L: linux-usb@vger.kernel.org
S: Supported
F: drivers/uwb/
-X: drivers/uwb/wlp/
-X: drivers/uwb/i1480/i1480u-wlp/
-X: drivers/uwb/i1480/i1480-wlp.h
F: include/linux/uwb.h
F: include/linux/uwb/
F: include/net/wimax.h
F: net/wimax/
-WIMEDIA LLC PROTOCOL (WLP) SUBSYSTEM
-M: David Vrabel <david.vrabel@csr.com>
-L: netdev@vger.kernel.org
-S: Maintained
-F: include/linux/wlp.h
-F: drivers/uwb/wlp/
-F: drivers/uwb/i1480/i1480u-wlp/
-F: drivers/uwb/i1480/i1480-wlp.h
-
WISTRON LAPTOP BUTTON DRIVER
M: Miloslav Trmac <mitr@volny.cz>
S: Maintained
technology using a wide spectrum (3.1-10.6GHz). It is
optimized for in-room use (480Mbps at 2 meters, 110Mbps at
10m). It serves as the transport layer for other protocols,
- such as Wireless USB (WUSB), IP (WLP) and upcoming
- Bluetooth and 1394
+ such as Wireless USB (WUSB).
The topology is peer to peer; however, higher level
protocols (such as WUSB) might impose a master/slave
To compile this driver select Y (built in) or M (module). It
is safe to select any even if you do not have the hardware.
-config UWB_WLP
- tristate "Support WiMedia Link Protocol (Ethernet/IP over UWB)"
- depends on UWB && NET
- help
- This is a common library for drivers that implement
- networking over UWB.
-
config UWB_I1480U
tristate "Support for Intel Wireless UWB Link 1480 HWA"
depends on UWB_HWA
To compile this driver select Y (built in) or M (module). It
is safe to select any even if you do not have the hardware.
-config UWB_I1480U_WLP
- tristate "Support for Intel Wireless UWB Link 1480 HWA's WLP interface"
- depends on UWB_I1480U && UWB_WLP && NET
- help
- This driver enables WLP support for the i1480 when connected via
- USB. WLP is the WiMedia Link Protocol, or IP over UWB.
-
- To compile this driver select Y (built in) or M (module). It
- is safe to select any even if you don't have the hardware.
-
endif # UWB
obj-$(CONFIG_UWB) += uwb.o
-obj-$(CONFIG_UWB_WLP) += wlp/
obj-$(CONFIG_UWB_WHCI) += umc.o whci.o whc-rc.o
obj-$(CONFIG_UWB_HWA) += hwa-rc.o
obj-$(CONFIG_UWB_I1480U) += i1480/
obj-$(CONFIG_UWB_I1480U) += dfu/ i1480-est.o
-obj-$(CONFIG_UWB_I1480U_WLP) += i1480u-wlp/
+++ /dev/null
-/*
- * Intel 1480 Wireless UWB Link
- * WLP specific definitions
- *
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * FIXME: docs
- */
-
-#ifndef __i1480_wlp_h__
-#define __i1480_wlp_h__
-
-#include <linux/spinlock.h>
-#include <linux/list.h>
-#include <linux/uwb.h>
-#include <linux/if_ether.h>
-#include <asm/byteorder.h>
-
-/* New simplified header format? */
-#undef WLP_HDR_FMT_2 /* FIXME: rename */
-
-/**
- * Values of the Delivery ID & Type field when PCA or DRP
- *
- * The Delivery ID & Type field in the WLP TX header indicates whether
- * the frame is PCA or DRP. This is done based on the high level bit of
- * this field.
- * We use this constant to test if the traffic is PCA or DRP as follows:
- * if (wlp_tx_hdr_delivery_id_type(wlp_tx_hdr) & WLP_DRP)
- * this is DRP traffic
- * else
- * this is PCA traffic
- */
-enum deliver_id_type_bit {
- WLP_DRP = 8,
-};
-
-/**
- * WLP TX header
- *
- * Indicates UWB/WLP-specific transmission parameters for a network
- * packet.
- */
-struct wlp_tx_hdr {
- /* dword 0 */
- struct uwb_dev_addr dstaddr;
- u8 key_index;
- u8 mac_params;
- /* dword 1 */
- u8 phy_params;
-#ifndef WLP_HDR_FMT_2
- u8 reserved;
- __le16 oui01; /* FIXME: not so sure if __le16 or u8[2] */
- /* dword 2 */
- u8 oui2; /* if all LE, it could be merged */
- __le16 prid;
-#endif
-} __attribute__((packed));
-
-static inline int wlp_tx_hdr_delivery_id_type(const struct wlp_tx_hdr *hdr)
-{
- return hdr->mac_params & 0x0f;
-}
-
-static inline int wlp_tx_hdr_ack_policy(const struct wlp_tx_hdr *hdr)
-{
- return (hdr->mac_params >> 4) & 0x07;
-}
-
-static inline int wlp_tx_hdr_rts_cts(const struct wlp_tx_hdr *hdr)
-{
- return (hdr->mac_params >> 7) & 0x01;
-}
-
-static inline void wlp_tx_hdr_set_delivery_id_type(struct wlp_tx_hdr *hdr, int id)
-{
- hdr->mac_params = (hdr->mac_params & ~0x0f) | id;
-}
-
-static inline void wlp_tx_hdr_set_ack_policy(struct wlp_tx_hdr *hdr,
- enum uwb_ack_pol policy)
-{
- hdr->mac_params = (hdr->mac_params & ~0x70) | (policy << 4);
-}
-
-static inline void wlp_tx_hdr_set_rts_cts(struct wlp_tx_hdr *hdr, int rts_cts)
-{
- hdr->mac_params = (hdr->mac_params & ~0x80) | (rts_cts << 7);
-}
-
-static inline enum uwb_phy_rate wlp_tx_hdr_phy_rate(const struct wlp_tx_hdr *hdr)
-{
- return hdr->phy_params & 0x0f;
-}
-
-static inline int wlp_tx_hdr_tx_power(const struct wlp_tx_hdr *hdr)
-{
- return (hdr->phy_params >> 4) & 0x0f;
-}
-
-static inline void wlp_tx_hdr_set_phy_rate(struct wlp_tx_hdr *hdr, enum uwb_phy_rate rate)
-{
- hdr->phy_params = (hdr->phy_params & ~0x0f) | rate;
-}
-
-static inline void wlp_tx_hdr_set_tx_power(struct wlp_tx_hdr *hdr, int pwr)
-{
- hdr->phy_params = (hdr->phy_params & ~0xf0) | (pwr << 4);
-}
-
-
-/**
- * WLP RX header
- *
- * Provides UWB/WLP-specific transmission data for a received
- * network packet.
- */
-struct wlp_rx_hdr {
- /* dword 0 */
- struct uwb_dev_addr dstaddr;
- struct uwb_dev_addr srcaddr;
- /* dword 1 */
- u8 LQI;
- s8 RSSI;
- u8 reserved3;
-#ifndef WLP_HDR_FMT_2
- u8 oui0;
- /* dword 2 */
- __le16 oui12;
- __le16 prid;
-#endif
-} __attribute__((packed));
-
-
-/** User configurable options for WLP */
-struct wlp_options {
- struct mutex mutex; /* access to user configurable options*/
- struct wlp_tx_hdr def_tx_hdr; /* default tx hdr */
- u8 pca_base_priority;
- u8 bw_alloc; /*index into bw_allocs[] for PCA/DRP reservations*/
-};
-
-
-static inline
-void wlp_options_init(struct wlp_options *options)
-{
- mutex_init(&options->mutex);
- wlp_tx_hdr_set_ack_policy(&options->def_tx_hdr, UWB_ACK_INM);
- wlp_tx_hdr_set_rts_cts(&options->def_tx_hdr, 1);
- /* FIXME: default to phy caps */
- wlp_tx_hdr_set_phy_rate(&options->def_tx_hdr, UWB_PHY_RATE_480);
-#ifndef WLP_HDR_FMT_2
- options->def_tx_hdr.prid = cpu_to_le16(0x0000);
-#endif
-}
-
-
-/* sysfs helpers */
-
-extern ssize_t uwb_pca_base_priority_store(struct wlp_options *,
- const char *, size_t);
-extern ssize_t uwb_pca_base_priority_show(const struct wlp_options *, char *);
-extern ssize_t uwb_bw_alloc_store(struct wlp_options *, const char *, size_t);
-extern ssize_t uwb_bw_alloc_show(const struct wlp_options *, char *);
-extern ssize_t uwb_ack_policy_store(struct wlp_options *,
- const char *, size_t);
-extern ssize_t uwb_ack_policy_show(const struct wlp_options *, char *);
-extern ssize_t uwb_rts_cts_store(struct wlp_options *, const char *, size_t);
-extern ssize_t uwb_rts_cts_show(const struct wlp_options *, char *);
-extern ssize_t uwb_phy_rate_store(struct wlp_options *, const char *, size_t);
-extern ssize_t uwb_phy_rate_show(const struct wlp_options *, char *);
-
-
-/** Simple bandwidth allocation (temporary and too simple) */
-struct wlp_bw_allocs {
- const char *name;
- struct {
- u8 mask, stream;
- } tx, rx;
-};
-
-
-#endif /* #ifndef __i1480_wlp_h__ */
+++ /dev/null
-obj-$(CONFIG_UWB_I1480U_WLP) += i1480u-wlp.o
-
-i1480u-wlp-objs := \
- lc.o \
- netdev.o \
- rx.o \
- sysfs.o \
- tx.o
+++ /dev/null
-/*
- * Intel 1480 Wireless UWB Link USB
- * Header formats, constants, general internal interfaces
- *
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * This is not an standard interface.
- *
- * FIXME: docs
- *
- * i1480u-wlp is pretty simple: two endpoints, one for tx, one for
- * rx. rx is polled. Network packets (ethernet, whatever) are wrapped
- * in i1480 TX or RX headers (for sending over the air), and these
- * packets are wrapped in UNTD headers (for sending to the WLP UWB
- * controller).
- *
- * UNTD packets (UNTD hdr + i1480 hdr + network packet) packets
- * cannot be bigger than i1480u_MAX_FRG_SIZE. When this happens, the
- * i1480 packet is broken in chunks/packets:
- *
- * UNTD-1st.hdr + i1480.hdr + payload
- * UNTD-next.hdr + payload
- * ...
- * UNTD-last.hdr + payload
- *
- * so that each packet is smaller or equal than i1480u_MAX_FRG_SIZE.
- *
- * All HW structures and bitmaps are little endian, so we need to play
- * ugly tricks when defining bitfields. Hoping for the day GCC
- * implements __attribute__((endian(1234))).
- *
- * FIXME: ROADMAP to the whole implementation
- */
-
-#ifndef __i1480u_wlp_h__
-#define __i1480u_wlp_h__
-
-#include <linux/usb.h>
-#include <linux/netdevice.h>
-#include <linux/uwb.h> /* struct uwb_rc, struct uwb_notifs_handler */
-#include <linux/wlp.h>
-#include "../i1480-wlp.h"
-
-#undef i1480u_FLOW_CONTROL /* Enable flow control code */
-
-/**
- * Basic flow control
- */
-enum {
- i1480u_TX_INFLIGHT_MAX = 1000,
- i1480u_TX_INFLIGHT_THRESHOLD = 100,
-};
-
-/** Maximum size of a transaction that we can tx/rx */
-enum {
- /* Maximum packet size computed as follows: max UNTD header (8) +
- * i1480 RX header (8) + max Ethernet header and payload (4096) +
- * Padding added by skb_reserve (2) to make post Ethernet payload
- * start on 16 byte boundary*/
- i1480u_MAX_RX_PKT_SIZE = 4114,
- i1480u_MAX_FRG_SIZE = 512,
- i1480u_RX_BUFS = 9,
-};
-
-
-/**
- * UNTD packet type
- *
- * We need to fragment any payload whose UNTD packet is going to be
- * bigger than i1480u_MAX_FRG_SIZE.
- */
-enum i1480u_pkt_type {
- i1480u_PKT_FRAG_1ST = 0x1,
- i1480u_PKT_FRAG_NXT = 0x0,
- i1480u_PKT_FRAG_LST = 0x2,
- i1480u_PKT_FRAG_CMP = 0x3
-};
-enum {
- i1480u_PKT_NONE = 0x4,
-};
-
-/** USB Network Transfer Descriptor - common */
-struct untd_hdr {
- u8 type;
- __le16 len;
-} __attribute__((packed));
-
-static inline enum i1480u_pkt_type untd_hdr_type(const struct untd_hdr *hdr)
-{
- return hdr->type & 0x03;
-}
-
-static inline int untd_hdr_rx_tx(const struct untd_hdr *hdr)
-{
- return (hdr->type >> 2) & 0x01;
-}
-
-static inline void untd_hdr_set_type(struct untd_hdr *hdr, enum i1480u_pkt_type type)
-{
- hdr->type = (hdr->type & ~0x03) | type;
-}
-
-static inline void untd_hdr_set_rx_tx(struct untd_hdr *hdr, int rx_tx)
-{
- hdr->type = (hdr->type & ~0x04) | (rx_tx << 2);
-}
-
-
-/**
- * USB Network Transfer Descriptor - Complete Packet
- *
- * This is for a packet that is smaller (header + payload) than
- * i1480u_MAX_FRG_SIZE.
- *
- * @hdr.total_len is the size of the payload; the payload doesn't
- * count this header nor the padding, but includes the size of i1480
- * header.
- */
-struct untd_hdr_cmp {
- struct untd_hdr hdr;
- u8 padding;
-} __attribute__((packed));
-
-
-/**
- * USB Network Transfer Descriptor - First fragment
- *
- * @hdr.len is the size of the *whole packet* (excluding UNTD
- * headers); @fragment_len is the size of the payload (excluding UNTD
- * headers, but including i1480 headers).
- */
-struct untd_hdr_1st {
- struct untd_hdr hdr;
- __le16 fragment_len;
- u8 padding[3];
-} __attribute__((packed));
-
-
-/**
- * USB Network Transfer Descriptor - Next / Last [Rest]
- *
- * @hdr.len is the size of the payload, not including headrs.
- */
-struct untd_hdr_rst {
- struct untd_hdr hdr;
- u8 padding;
-} __attribute__((packed));
-
-
-/**
- * Transmission context
- *
- * Wraps all the stuff needed to track a pending/active tx
- * operation.
- */
-struct i1480u_tx {
- struct list_head list_node;
- struct i1480u *i1480u;
- struct urb *urb;
-
- struct sk_buff *skb;
- struct wlp_tx_hdr *wlp_tx_hdr;
-
- void *buf; /* if NULL, no new buf was used */
- size_t buf_size;
-};
-
-/**
- * Basic flow control
- *
- * We maintain a basic flow control counter. "count" how many TX URBs are
- * outstanding. Only allow "max"
- * TX URBs to be outstanding. If this value is reached the queue will be
- * stopped. The queue will be restarted when there are
- * "threshold" URBs outstanding.
- * Maintain a counter of how many time the TX queue needed to be restarted
- * due to the "max" being exceeded and the "threshold" reached again. The
- * timestamp "restart_ts" is to keep track from when the counter was last
- * queried (see sysfs handling of file wlp_tx_inflight).
- */
-struct i1480u_tx_inflight {
- atomic_t count;
- unsigned long max;
- unsigned long threshold;
- unsigned long restart_ts;
- atomic_t restart_count;
-};
-
-/**
- * Instance of a i1480u WLP interface
- *
- * Keeps references to the USB device that wraps it, as well as it's
- * interface and associated UWB host controller. As well, it also
- * keeps a link to the netdevice for integration into the networking
- * stack.
- * We maintian separate error history for the tx and rx endpoints because
- * the implementation does not rely on locking - having one shared
- * structure between endpoints may cause problems. Adding locking to the
- * implementation will have higher cost than adding a separate structure.
- */
-struct i1480u {
- struct usb_device *usb_dev;
- struct usb_interface *usb_iface;
- struct net_device *net_dev;
-
- spinlock_t lock;
-
- /* RX context handling */
- struct sk_buff *rx_skb;
- struct uwb_dev_addr rx_srcaddr;
- size_t rx_untd_pkt_size;
- struct i1480u_rx_buf {
- struct i1480u *i1480u; /* back pointer */
- struct urb *urb;
- struct sk_buff *data; /* i1480u_MAX_RX_PKT_SIZE each */
- } rx_buf[i1480u_RX_BUFS]; /* N bufs */
-
- spinlock_t tx_list_lock; /* TX context */
- struct list_head tx_list;
- u8 tx_stream;
-
- struct stats lqe_stats, rssi_stats; /* radio statistics */
-
- /* Options we can set from sysfs */
- struct wlp_options options;
- struct uwb_notifs_handler uwb_notifs_handler;
- struct edc tx_errors;
- struct edc rx_errors;
- struct wlp wlp;
-#ifdef i1480u_FLOW_CONTROL
- struct urb *notif_urb;
- struct edc notif_edc; /* error density counter */
- u8 notif_buffer[1];
-#endif
- struct i1480u_tx_inflight tx_inflight;
-};
-
-/* Internal interfaces */
-extern void i1480u_rx_cb(struct urb *urb);
-extern int i1480u_rx_setup(struct i1480u *);
-extern void i1480u_rx_release(struct i1480u *);
-extern void i1480u_tx_release(struct i1480u *);
-extern int i1480u_xmit_frame(struct wlp *, struct sk_buff *,
- struct uwb_dev_addr *);
-extern void i1480u_stop_queue(struct wlp *);
-extern void i1480u_start_queue(struct wlp *);
-extern int i1480u_sysfs_setup(struct i1480u *);
-extern void i1480u_sysfs_release(struct i1480u *);
-
-/* netdev interface */
-extern int i1480u_open(struct net_device *);
-extern int i1480u_stop(struct net_device *);
-extern netdev_tx_t i1480u_hard_start_xmit(struct sk_buff *,
- struct net_device *);
-extern void i1480u_tx_timeout(struct net_device *);
-extern int i1480u_set_config(struct net_device *, struct ifmap *);
-extern int i1480u_change_mtu(struct net_device *, int);
-extern void i1480u_uwb_notifs_cb(void *, struct uwb_dev *, enum uwb_notifs);
-
-/* bandwidth allocation callback */
-extern void i1480u_bw_alloc_cb(struct uwb_rsv *);
-
-/* Sys FS */
-extern struct attribute_group i1480u_wlp_attr_group;
-
-#endif /* #ifndef __i1480u_wlp_h__ */
+++ /dev/null
-/*
- * WUSB Wire Adapter: WLP interface
- * Driver for the Linux Network stack.
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * FIXME: docs
- *
- * This implements a very simple network driver for the WLP USB
- * device that is associated to a UWB (Ultra Wide Band) host.
- *
- * This is seen as an interface of a composite device. Once the UWB
- * host has an association to another WLP capable device, the
- * networking interface (aka WLP) can start to send packets back and
- * forth.
- *
- * Limitations:
- *
- * - Hand cranked; can't ifup the interface until there is an association
- *
- * - BW allocation very simplistic [see i1480u_mas_set() and callees].
- *
- *
- * ROADMAP:
- *
- * ENTRY POINTS (driver model):
- *
- * i1480u_driver_{exit,init}(): initialization of the driver.
- *
- * i1480u_probe(): called by the driver code when a device
- * matching 'i1480u_id_table' is connected.
- *
- * This allocs a netdev instance, inits with
- * i1480u_add(), then registers_netdev().
- * i1480u_init()
- * i1480u_add()
- *
- * i1480u_disconnect(): device has been disconnected/module
- * is being removed.
- * i1480u_rm()
- */
-#include <linux/gfp.h>
-#include <linux/if_arp.h>
-#include <linux/etherdevice.h>
-
-#include "i1480u-wlp.h"
-
-
-
-static inline
-void i1480u_init(struct i1480u *i1480u)
-{
- /* nothing so far... doesn't it suck? */
- spin_lock_init(&i1480u->lock);
- INIT_LIST_HEAD(&i1480u->tx_list);
- spin_lock_init(&i1480u->tx_list_lock);
- wlp_options_init(&i1480u->options);
- edc_init(&i1480u->tx_errors);
- edc_init(&i1480u->rx_errors);
-#ifdef i1480u_FLOW_CONTROL
- edc_init(&i1480u->notif_edc);
-#endif
- stats_init(&i1480u->lqe_stats);
- stats_init(&i1480u->rssi_stats);
- wlp_init(&i1480u->wlp);
-}
-
-/**
- * Fill WLP device information structure
- *
- * The structure will contain a few character arrays, each ending with a
- * null terminated string. Each string has to fit (excluding terminating
- * character) into a specified range obtained from the WLP substack.
- *
- * It is still not clear exactly how this device information should be
- * obtained. Until we find out we use the USB device descriptor as backup, some
- * information elements have intuitive mappings, other not.
- */
-static
-void i1480u_fill_device_info(struct wlp *wlp, struct wlp_device_info *dev_info)
-{
- struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp);
- struct usb_device *usb_dev = i1480u->usb_dev;
- /* Treat device name and model name the same */
- if (usb_dev->descriptor.iProduct) {
- usb_string(usb_dev, usb_dev->descriptor.iProduct,
- dev_info->name, sizeof(dev_info->name));
- usb_string(usb_dev, usb_dev->descriptor.iProduct,
- dev_info->model_name, sizeof(dev_info->model_name));
- }
- if (usb_dev->descriptor.iManufacturer)
- usb_string(usb_dev, usb_dev->descriptor.iManufacturer,
- dev_info->manufacturer,
- sizeof(dev_info->manufacturer));
- scnprintf(dev_info->model_nr, sizeof(dev_info->model_nr), "%04x",
- __le16_to_cpu(usb_dev->descriptor.bcdDevice));
- if (usb_dev->descriptor.iSerialNumber)
- usb_string(usb_dev, usb_dev->descriptor.iSerialNumber,
- dev_info->serial, sizeof(dev_info->serial));
- /* FIXME: where should we obtain category? */
- dev_info->prim_dev_type.category = cpu_to_le16(WLP_DEV_CAT_OTHER);
- /* FIXME: Complete OUI and OUIsubdiv attributes */
-}
-
-#ifdef i1480u_FLOW_CONTROL
-/**
- * Callback for the notification endpoint
- *
- * This mostly controls the xon/xoff protocol. In case of hard error,
- * we stop the queue. If not, we always retry.
- */
-static
-void i1480u_notif_cb(struct urb *urb, struct pt_regs *regs)
-{
- struct i1480u *i1480u = urb->context;
- struct usb_interface *usb_iface = i1480u->usb_iface;
- struct device *dev = &usb_iface->dev;
- int result;
-
- switch (urb->status) {
- case 0: /* Got valid data, do xon/xoff */
- switch (i1480u->notif_buffer[0]) {
- case 'N':
- dev_err(dev, "XOFF STOPPING queue at %lu\n", jiffies);
- netif_stop_queue(i1480u->net_dev);
- break;
- case 'A':
- dev_err(dev, "XON STARTING queue at %lu\n", jiffies);
- netif_start_queue(i1480u->net_dev);
- break;
- default:
- dev_err(dev, "NEP: unknown data 0x%02hhx\n",
- i1480u->notif_buffer[0]);
- }
- break;
- case -ECONNRESET: /* Controlled situation ... */
- case -ENOENT: /* we killed the URB... */
- dev_err(dev, "NEP: URB reset/noent %d\n", urb->status);
- goto error;
- case -ESHUTDOWN: /* going away! */
- dev_err(dev, "NEP: URB down %d\n", urb->status);
- goto error;
- default: /* Retry unless it gets ugly */
- if (edc_inc(&i1480u->notif_edc, EDC_MAX_ERRORS,
- EDC_ERROR_TIMEFRAME)) {
- dev_err(dev, "NEP: URB max acceptable errors "
- "exceeded; resetting device\n");
- goto error_reset;
- }
- dev_err(dev, "NEP: URB error %d\n", urb->status);
- break;
- }
- result = usb_submit_urb(urb, GFP_ATOMIC);
- if (result < 0) {
- dev_err(dev, "NEP: Can't resubmit URB: %d; resetting device\n",
- result);
- goto error_reset;
- }
- return;
-
-error_reset:
- wlp_reset_all(&i1480-wlp);
-error:
- netif_stop_queue(i1480u->net_dev);
- return;
-}
-#endif
-
-static const struct net_device_ops i1480u_netdev_ops = {
- .ndo_open = i1480u_open,
- .ndo_stop = i1480u_stop,
- .ndo_start_xmit = i1480u_hard_start_xmit,
- .ndo_tx_timeout = i1480u_tx_timeout,
- .ndo_set_config = i1480u_set_config,
- .ndo_change_mtu = i1480u_change_mtu,
-};
-
-static
-int i1480u_add(struct i1480u *i1480u, struct usb_interface *iface)
-{
- int result = -ENODEV;
- struct wlp *wlp = &i1480u->wlp;
- struct usb_device *usb_dev = interface_to_usbdev(iface);
- struct net_device *net_dev = i1480u->net_dev;
- struct uwb_rc *rc;
- struct uwb_dev *uwb_dev;
-#ifdef i1480u_FLOW_CONTROL
- struct usb_endpoint_descriptor *epd;
-#endif
-
- i1480u->usb_dev = usb_get_dev(usb_dev);
- i1480u->usb_iface = iface;
- rc = uwb_rc_get_by_grandpa(&i1480u->usb_dev->dev);
- if (rc == NULL) {
- dev_err(&iface->dev, "Cannot get associated UWB Radio "
- "Controller\n");
- goto out;
- }
- wlp->xmit_frame = i1480u_xmit_frame;
- wlp->fill_device_info = i1480u_fill_device_info;
- wlp->stop_queue = i1480u_stop_queue;
- wlp->start_queue = i1480u_start_queue;
- result = wlp_setup(wlp, rc, net_dev);
- if (result < 0) {
- dev_err(&iface->dev, "Cannot setup WLP\n");
- goto error_wlp_setup;
- }
- result = 0;
- ether_setup(net_dev); /* make it an etherdevice */
- uwb_dev = &rc->uwb_dev;
- /* FIXME: hookup address change notifications? */
-
- memcpy(net_dev->dev_addr, uwb_dev->mac_addr.data,
- sizeof(net_dev->dev_addr));
-
- net_dev->hard_header_len = sizeof(struct untd_hdr_cmp)
- + sizeof(struct wlp_tx_hdr)
- + WLP_DATA_HLEN
- + ETH_HLEN;
- net_dev->mtu = 3500;
- net_dev->tx_queue_len = 20; /* FIXME: maybe use 1000? */
-
-/* net_dev->flags &= ~IFF_BROADCAST; FIXME: BUG in firmware */
- /* FIXME: multicast disabled */
- net_dev->flags &= ~IFF_MULTICAST;
- net_dev->features &= ~NETIF_F_SG;
- net_dev->features &= ~NETIF_F_FRAGLIST;
- /* All NETIF_F_*_CSUM disabled */
- net_dev->features |= NETIF_F_HIGHDMA;
- net_dev->watchdog_timeo = 5*HZ; /* FIXME: a better default? */
-
- net_dev->netdev_ops = &i1480u_netdev_ops;
-
-#ifdef i1480u_FLOW_CONTROL
- /* Notification endpoint setup (submitted when we open the device) */
- i1480u->notif_urb = usb_alloc_urb(0, GFP_KERNEL);
- if (i1480u->notif_urb == NULL) {
- dev_err(&iface->dev, "Unable to allocate notification URB\n");
- result = -ENOMEM;
- goto error_urb_alloc;
- }
- epd = &iface->cur_altsetting->endpoint[0].desc;
- usb_fill_int_urb(i1480u->notif_urb, usb_dev,
- usb_rcvintpipe(usb_dev, epd->bEndpointAddress),
- i1480u->notif_buffer, sizeof(i1480u->notif_buffer),
- i1480u_notif_cb, i1480u, epd->bInterval);
-
-#endif
-
- i1480u->tx_inflight.max = i1480u_TX_INFLIGHT_MAX;
- i1480u->tx_inflight.threshold = i1480u_TX_INFLIGHT_THRESHOLD;
- i1480u->tx_inflight.restart_ts = jiffies;
- usb_set_intfdata(iface, i1480u);
- return result;
-
-#ifdef i1480u_FLOW_CONTROL
-error_urb_alloc:
-#endif
- wlp_remove(wlp);
-error_wlp_setup:
- uwb_rc_put(rc);
-out:
- usb_put_dev(i1480u->usb_dev);
- return result;
-}
-
-static void i1480u_rm(struct i1480u *i1480u)
-{
- struct uwb_rc *rc = i1480u->wlp.rc;
- usb_set_intfdata(i1480u->usb_iface, NULL);
-#ifdef i1480u_FLOW_CONTROL
- usb_kill_urb(i1480u->notif_urb);
- usb_free_urb(i1480u->notif_urb);
-#endif
- wlp_remove(&i1480u->wlp);
- uwb_rc_put(rc);
- usb_put_dev(i1480u->usb_dev);
-}
-
-/** Just setup @net_dev's i1480u private data */
-static void i1480u_netdev_setup(struct net_device *net_dev)
-{
- struct i1480u *i1480u = netdev_priv(net_dev);
- /* Initialize @i1480u */
- memset(i1480u, 0, sizeof(*i1480u));
- i1480u_init(i1480u);
-}
-
-/**
- * Probe a i1480u interface and register it
- *
- * @iface: USB interface to link to
- * @id: USB class/subclass/protocol id
- * @returns: 0 if ok, < 0 errno code on error.
- *
- * Does basic housekeeping stuff and then allocs a netdev with space
- * for the i1480u data. Initializes, registers in i1480u, registers in
- * netdev, ready to go.
- */
-static int i1480u_probe(struct usb_interface *iface,
- const struct usb_device_id *id)
-{
- int result;
- struct net_device *net_dev;
- struct device *dev = &iface->dev;
- struct i1480u *i1480u;
-
- /* Allocate instance [calls i1480u_netdev_setup() on it] */
- result = -ENOMEM;
- net_dev = alloc_netdev(sizeof(*i1480u), "wlp%d", i1480u_netdev_setup);
- if (net_dev == NULL) {
- dev_err(dev, "no memory for network device instance\n");
- goto error_alloc_netdev;
- }
- SET_NETDEV_DEV(net_dev, dev);
- i1480u = netdev_priv(net_dev);
- i1480u->net_dev = net_dev;
- result = i1480u_add(i1480u, iface); /* Now setup all the wlp stuff */
- if (result < 0) {
- dev_err(dev, "cannot add i1480u device: %d\n", result);
- goto error_i1480u_add;
- }
- result = register_netdev(net_dev); /* Okey dokey, bring it up */
- if (result < 0) {
- dev_err(dev, "cannot register network device: %d\n", result);
- goto error_register_netdev;
- }
- i1480u_sysfs_setup(i1480u);
- if (result < 0)
- goto error_sysfs_init;
- return 0;
-
-error_sysfs_init:
- unregister_netdev(net_dev);
-error_register_netdev:
- i1480u_rm(i1480u);
-error_i1480u_add:
- free_netdev(net_dev);
-error_alloc_netdev:
- return result;
-}
-
-
-/**
- * Disconect a i1480u from the system.
- *
- * i1480u_stop() has been called before, so al the rx and tx contexts
- * have been taken down already. Make sure the queue is stopped,
- * unregister netdev and i1480u, free and kill.
- */
-static void i1480u_disconnect(struct usb_interface *iface)
-{
- struct i1480u *i1480u;
- struct net_device *net_dev;
-
- i1480u = usb_get_intfdata(iface);
- net_dev = i1480u->net_dev;
- netif_stop_queue(net_dev);
-#ifdef i1480u_FLOW_CONTROL
- usb_kill_urb(i1480u->notif_urb);
-#endif
- i1480u_sysfs_release(i1480u);
- unregister_netdev(net_dev);
- i1480u_rm(i1480u);
- free_netdev(net_dev);
-}
-
-static struct usb_device_id i1480u_id_table[] = {
- {
- .match_flags = USB_DEVICE_ID_MATCH_DEVICE \
- | USB_DEVICE_ID_MATCH_DEV_INFO \
- | USB_DEVICE_ID_MATCH_INT_INFO,
- .idVendor = 0x8086,
- .idProduct = 0x0c3b,
- .bDeviceClass = 0xef,
- .bDeviceSubClass = 0x02,
- .bDeviceProtocol = 0x02,
- .bInterfaceClass = 0xff,
- .bInterfaceSubClass = 0xff,
- .bInterfaceProtocol = 0xff,
- },
- {},
-};
-MODULE_DEVICE_TABLE(usb, i1480u_id_table);
-
-static struct usb_driver i1480u_driver = {
- .name = KBUILD_MODNAME,
- .probe = i1480u_probe,
- .disconnect = i1480u_disconnect,
- .id_table = i1480u_id_table,
-};
-
-static int __init i1480u_driver_init(void)
-{
- return usb_register(&i1480u_driver);
-}
-module_init(i1480u_driver_init);
-
-
-static void __exit i1480u_driver_exit(void)
-{
- usb_deregister(&i1480u_driver);
-}
-module_exit(i1480u_driver_exit);
-
-MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
-MODULE_DESCRIPTION("i1480 Wireless UWB Link WLP networking for USB");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * WUSB Wire Adapter: WLP interface
- * Driver for the Linux Network stack.
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * FIXME: docs
- *
- * Implementation of the netdevice linkage (except tx and rx related stuff).
- *
- * ROADMAP:
- *
- * ENTRY POINTS (Net device):
- *
- * i1480u_open(): Called when we ifconfig up the interface;
- * associates to a UWB host controller, reserves
- * bandwidth (MAS), sets up RX USB URB and starts
- * the queue.
- *
- * i1480u_stop(): Called when we ifconfig down a interface;
- * reverses _open().
- *
- * i1480u_set_config():
- */
-
-#include <linux/slab.h>
-#include <linux/if_arp.h>
-#include <linux/etherdevice.h>
-
-#include "i1480u-wlp.h"
-
-struct i1480u_cmd_set_ip_mas {
- struct uwb_rccb rccb;
- struct uwb_dev_addr addr;
- u8 stream;
- u8 owner;
- u8 type; /* enum uwb_drp_type */
- u8 baMAS[32];
-} __attribute__((packed));
-
-
-static
-int i1480u_set_ip_mas(
- struct uwb_rc *rc,
- const struct uwb_dev_addr *dstaddr,
- u8 stream, u8 owner, u8 type, unsigned long *mas)
-{
-
- int result;
- struct i1480u_cmd_set_ip_mas *cmd;
- struct uwb_rc_evt_confirm reply;
-
- result = -ENOMEM;
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (cmd == NULL)
- goto error_kzalloc;
- cmd->rccb.bCommandType = 0xfd;
- cmd->rccb.wCommand = cpu_to_le16(0x000e);
- cmd->addr = *dstaddr;
- cmd->stream = stream;
- cmd->owner = owner;
- cmd->type = type;
- if (mas == NULL)
- memset(cmd->baMAS, 0x00, sizeof(cmd->baMAS));
- else
- memcpy(cmd->baMAS, mas, sizeof(cmd->baMAS));
- reply.rceb.bEventType = 0xfd;
- reply.rceb.wEvent = cpu_to_le16(0x000e);
- result = uwb_rc_cmd(rc, "SET-IP-MAS", &cmd->rccb, sizeof(*cmd),
- &reply.rceb, sizeof(reply));
- if (result < 0)
- goto error_cmd;
- if (reply.bResultCode != UWB_RC_RES_FAIL) {
- dev_err(&rc->uwb_dev.dev,
- "SET-IP-MAS: command execution failed: %d\n",
- reply.bResultCode);
- result = -EIO;
- }
-error_cmd:
- kfree(cmd);
-error_kzalloc:
- return result;
-}
-
-/*
- * Inform a WLP interface of a MAS reservation
- *
- * @rc is assumed refcnted.
- */
-/* FIXME: detect if remote device is WLP capable? */
-static int i1480u_mas_set_dev(struct uwb_dev *uwb_dev, struct uwb_rc *rc,
- u8 stream, u8 owner, u8 type, unsigned long *mas)
-{
- int result = 0;
- struct device *dev = &rc->uwb_dev.dev;
-
- result = i1480u_set_ip_mas(rc, &uwb_dev->dev_addr, stream, owner,
- type, mas);
- if (result < 0) {
- char rcaddrbuf[UWB_ADDR_STRSIZE], devaddrbuf[UWB_ADDR_STRSIZE];
- uwb_dev_addr_print(rcaddrbuf, sizeof(rcaddrbuf),
- &rc->uwb_dev.dev_addr);
- uwb_dev_addr_print(devaddrbuf, sizeof(devaddrbuf),
- &uwb_dev->dev_addr);
- dev_err(dev, "Set IP MAS (%s to %s) failed: %d\n",
- rcaddrbuf, devaddrbuf, result);
- }
- return result;
-}
-
-/**
- * Called by bandwidth allocator when change occurs in reservation.
- *
- * @rsv: The reservation that is being established, modified, or
- * terminated.
- *
- * When a reservation is established, modified, or terminated the upper layer
- * (WLP here) needs set/update the currently available Media Access Slots
- * that can be use for IP traffic.
- *
- * Our action taken during failure depends on how the reservation is being
- * changed:
- * - if reservation is being established we do nothing if we cannot set the
- * new MAS to be used
- * - if reservation is being terminated we revert back to PCA whether the
- * SET IP MAS command succeeds or not.
- */
-void i1480u_bw_alloc_cb(struct uwb_rsv *rsv)
-{
- int result = 0;
- struct i1480u *i1480u = rsv->pal_priv;
- struct device *dev = &i1480u->usb_iface->dev;
- struct uwb_dev *target_dev = rsv->target.dev;
- struct uwb_rc *rc = i1480u->wlp.rc;
- u8 stream = rsv->stream;
- int type = rsv->type;
- int is_owner = rsv->owner == &rc->uwb_dev;
- unsigned long *bmp = rsv->mas.bm;
-
- dev_err(dev, "WLP callback called - sending set ip mas\n");
- /*user cannot change options while setting configuration*/
- mutex_lock(&i1480u->options.mutex);
- switch (rsv->state) {
- case UWB_RSV_STATE_T_ACCEPTED:
- case UWB_RSV_STATE_O_ESTABLISHED:
- result = i1480u_mas_set_dev(target_dev, rc, stream, is_owner,
- type, bmp);
- if (result < 0) {
- dev_err(dev, "MAS reservation failed: %d\n", result);
- goto out;
- }
- if (is_owner) {
- wlp_tx_hdr_set_delivery_id_type(&i1480u->options.def_tx_hdr,
- WLP_DRP | stream);
- wlp_tx_hdr_set_rts_cts(&i1480u->options.def_tx_hdr, 0);
- }
- break;
- case UWB_RSV_STATE_NONE:
- /* revert back to PCA */
- result = i1480u_mas_set_dev(target_dev, rc, stream, is_owner,
- type, bmp);
- if (result < 0)
- dev_err(dev, "MAS reservation failed: %d\n", result);
- /* Revert to PCA even though SET IP MAS failed. */
- wlp_tx_hdr_set_delivery_id_type(&i1480u->options.def_tx_hdr,
- i1480u->options.pca_base_priority);
- wlp_tx_hdr_set_rts_cts(&i1480u->options.def_tx_hdr, 1);
- break;
- default:
- dev_err(dev, "unexpected WLP reservation state: %s (%d).\n",
- uwb_rsv_state_str(rsv->state), rsv->state);
- break;
- }
-out:
- mutex_unlock(&i1480u->options.mutex);
- return;
-}
-
-/**
- *
- * Called on 'ifconfig up'
- */
-int i1480u_open(struct net_device *net_dev)
-{
- int result;
- struct i1480u *i1480u = netdev_priv(net_dev);
- struct wlp *wlp = &i1480u->wlp;
- struct uwb_rc *rc;
- struct device *dev = &i1480u->usb_iface->dev;
-
- rc = wlp->rc;
- result = i1480u_rx_setup(i1480u); /* Alloc RX stuff */
- if (result < 0)
- goto error_rx_setup;
-
- result = uwb_radio_start(&wlp->pal);
- if (result < 0)
- goto error_radio_start;
-
- netif_wake_queue(net_dev);
-#ifdef i1480u_FLOW_CONTROL
- result = usb_submit_urb(i1480u->notif_urb, GFP_KERNEL);
- if (result < 0) {
- dev_err(dev, "Can't submit notification URB: %d\n", result);
- goto error_notif_urb_submit;
- }
-#endif
- /* Interface is up with an address, now we can create WSS */
- result = wlp_wss_setup(net_dev, &wlp->wss);
- if (result < 0) {
- dev_err(dev, "Can't create WSS: %d. \n", result);
- goto error_wss_setup;
- }
- return 0;
-error_wss_setup:
-#ifdef i1480u_FLOW_CONTROL
- usb_kill_urb(i1480u->notif_urb);
-error_notif_urb_submit:
-#endif
- uwb_radio_stop(&wlp->pal);
-error_radio_start:
- netif_stop_queue(net_dev);
- i1480u_rx_release(i1480u);
-error_rx_setup:
- return result;
-}
-
-
-/**
- * Called on 'ifconfig down'
- */
-int i1480u_stop(struct net_device *net_dev)
-{
- struct i1480u *i1480u = netdev_priv(net_dev);
- struct wlp *wlp = &i1480u->wlp;
-
- BUG_ON(wlp->rc == NULL);
- wlp_wss_remove(&wlp->wss);
- netif_carrier_off(net_dev);
-#ifdef i1480u_FLOW_CONTROL
- usb_kill_urb(i1480u->notif_urb);
-#endif
- netif_stop_queue(net_dev);
- uwb_radio_stop(&wlp->pal);
- i1480u_rx_release(i1480u);
- i1480u_tx_release(i1480u);
- return 0;
-}
-
-/**
- *
- * Change the interface config--we probably don't have to do anything.
- */
-int i1480u_set_config(struct net_device *net_dev, struct ifmap *map)
-{
- int result;
- struct i1480u *i1480u = netdev_priv(net_dev);
- BUG_ON(i1480u->wlp.rc == NULL);
- result = 0;
- return result;
-}
-
-/**
- * Change the MTU of the interface
- */
-int i1480u_change_mtu(struct net_device *net_dev, int mtu)
-{
- static union {
- struct wlp_tx_hdr tx;
- struct wlp_rx_hdr rx;
- } i1480u_all_hdrs;
-
- if (mtu < ETH_HLEN) /* We encap eth frames */
- return -ERANGE;
- if (mtu > 4000 - sizeof(i1480u_all_hdrs))
- return -ERANGE;
- net_dev->mtu = mtu;
- return 0;
-}
-
-/**
- * Stop the network queue
- *
- * Enable WLP substack to stop network queue. We also set the flow control
- * threshold at this time to prevent the flow control from restarting the
- * queue.
- *
- * we are loosing the current threshold value here ... FIXME?
- */
-void i1480u_stop_queue(struct wlp *wlp)
-{
- struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp);
- struct net_device *net_dev = i1480u->net_dev;
- i1480u->tx_inflight.threshold = 0;
- netif_stop_queue(net_dev);
-}
-
-/**
- * Start the network queue
- *
- * Enable WLP substack to start network queue. Also re-enable the flow
- * control to manage the queue again.
- *
- * We re-enable the flow control by storing the default threshold in the
- * flow control threshold. This means that if the user modified the
- * threshold before the queue was stopped and restarted that information
- * will be lost. FIXME?
- */
-void i1480u_start_queue(struct wlp *wlp)
-{
- struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp);
- struct net_device *net_dev = i1480u->net_dev;
- i1480u->tx_inflight.threshold = i1480u_TX_INFLIGHT_THRESHOLD;
- netif_start_queue(net_dev);
-}
+++ /dev/null
-/*
- * WUSB Wire Adapter: WLP interface
- * Driver for the Linux Network stack.
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * i1480u's RX handling is simple. i1480u will send the received
- * network packets broken up in fragments; 1 to N fragments make a
- * packet, we assemble them together and deliver the packet with netif_rx().
- *
- * Beacuse each USB transfer is a *single* fragment (except when the
- * transfer contains a first fragment), each URB called thus
- * back contains one or two fragments. So we queue N URBs, each with its own
- * fragment buffer. When a URB is done, we process it (adding to the
- * current skb from the fragment buffer until complete). Once
- * processed, we requeue the URB. There is always a bunch of URBs
- * ready to take data, so the intergap should be minimal.
- *
- * An URB's transfer buffer is the data field of a socket buffer. This
- * reduces copying as data can be passed directly to network layer. If a
- * complete packet or 1st fragment is received the URB's transfer buffer is
- * taken away from it and used to send data to the network layer. In this
- * case a new transfer buffer is allocated to the URB before being requeued.
- * If a "NEXT" or "LAST" fragment is received, the fragment contents is
- * appended to the RX packet under construction and the transfer buffer
- * is reused. To be able to use this buffer to assemble complete packets
- * we set each buffer's size to that of the MAX ethernet packet that can
- * be received. There is thus room for improvement in memory usage.
- *
- * When the max tx fragment size increases, we should be able to read
- * data into the skbs directly with very simple code.
- *
- * ROADMAP:
- *
- * ENTRY POINTS:
- *
- * i1480u_rx_setup(): setup RX context [from i1480u_open()]
- *
- * i1480u_rx_release(): release RX context [from i1480u_stop()]
- *
- * i1480u_rx_cb(): called when the RX USB URB receives a
- * packet. It removes the header and pushes it up
- * the Linux netdev stack with netif_rx().
- *
- * i1480u_rx_buffer()
- * i1480u_drop() and i1480u_fix()
- * i1480u_skb_deliver
- *
- */
-
-#include <linux/gfp.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include "i1480u-wlp.h"
-
-/*
- * Setup the RX context
- *
- * Each URB is provided with a transfer_buffer that is the data field
- * of a new socket buffer.
- */
-int i1480u_rx_setup(struct i1480u *i1480u)
-{
- int result, cnt;
- struct device *dev = &i1480u->usb_iface->dev;
- struct net_device *net_dev = i1480u->net_dev;
- struct usb_endpoint_descriptor *epd;
- struct sk_buff *skb;
-
- /* Alloc RX stuff */
- i1480u->rx_skb = NULL; /* not in process of receiving packet */
- result = -ENOMEM;
- epd = &i1480u->usb_iface->cur_altsetting->endpoint[1].desc;
- for (cnt = 0; cnt < i1480u_RX_BUFS; cnt++) {
- struct i1480u_rx_buf *rx_buf = &i1480u->rx_buf[cnt];
- rx_buf->i1480u = i1480u;
- skb = dev_alloc_skb(i1480u_MAX_RX_PKT_SIZE);
- if (!skb) {
- dev_err(dev,
- "RX: cannot allocate RX buffer %d\n", cnt);
- result = -ENOMEM;
- goto error;
- }
- skb->dev = net_dev;
- skb->ip_summed = CHECKSUM_NONE;
- skb_reserve(skb, 2);
- rx_buf->data = skb;
- rx_buf->urb = usb_alloc_urb(0, GFP_KERNEL);
- if (unlikely(rx_buf->urb == NULL)) {
- dev_err(dev, "RX: cannot allocate URB %d\n", cnt);
- result = -ENOMEM;
- goto error;
- }
- usb_fill_bulk_urb(rx_buf->urb, i1480u->usb_dev,
- usb_rcvbulkpipe(i1480u->usb_dev, epd->bEndpointAddress),
- rx_buf->data->data, i1480u_MAX_RX_PKT_SIZE - 2,
- i1480u_rx_cb, rx_buf);
- result = usb_submit_urb(rx_buf->urb, GFP_NOIO);
- if (unlikely(result < 0)) {
- dev_err(dev, "RX: cannot submit URB %d: %d\n",
- cnt, result);
- goto error;
- }
- }
- return 0;
-
-error:
- i1480u_rx_release(i1480u);
- return result;
-}
-
-
-/* Release resources associated to the rx context */
-void i1480u_rx_release(struct i1480u *i1480u)
-{
- int cnt;
- for (cnt = 0; cnt < i1480u_RX_BUFS; cnt++) {
- if (i1480u->rx_buf[cnt].data)
- dev_kfree_skb(i1480u->rx_buf[cnt].data);
- if (i1480u->rx_buf[cnt].urb) {
- usb_kill_urb(i1480u->rx_buf[cnt].urb);
- usb_free_urb(i1480u->rx_buf[cnt].urb);
- }
- }
- if (i1480u->rx_skb != NULL)
- dev_kfree_skb(i1480u->rx_skb);
-}
-
-static
-void i1480u_rx_unlink_urbs(struct i1480u *i1480u)
-{
- int cnt;
- for (cnt = 0; cnt < i1480u_RX_BUFS; cnt++) {
- if (i1480u->rx_buf[cnt].urb)
- usb_unlink_urb(i1480u->rx_buf[cnt].urb);
- }
-}
-
-/* Fix an out-of-sequence packet */
-#define i1480u_fix(i1480u, msg...) \
-do { \
- if (printk_ratelimit()) \
- dev_err(&i1480u->usb_iface->dev, msg); \
- dev_kfree_skb_irq(i1480u->rx_skb); \
- i1480u->rx_skb = NULL; \
- i1480u->rx_untd_pkt_size = 0; \
-} while (0)
-
-
-/* Drop an out-of-sequence packet */
-#define i1480u_drop(i1480u, msg...) \
-do { \
- if (printk_ratelimit()) \
- dev_err(&i1480u->usb_iface->dev, msg); \
- i1480u->net_dev->stats.rx_dropped++; \
-} while (0)
-
-
-
-
-/* Finalizes setting up the SKB and delivers it
- *
- * We first pass the incoming frame to WLP substack for verification. It
- * may also be a WLP association frame in which case WLP will take over the
- * processing. If WLP does not take it over it will still verify it, if the
- * frame is invalid the skb will be freed by WLP and we will not continue
- * parsing.
- * */
-static
-void i1480u_skb_deliver(struct i1480u *i1480u)
-{
- int should_parse;
- struct net_device *net_dev = i1480u->net_dev;
- struct device *dev = &i1480u->usb_iface->dev;
-
- should_parse = wlp_receive_frame(dev, &i1480u->wlp, i1480u->rx_skb,
- &i1480u->rx_srcaddr);
- if (!should_parse)
- goto out;
- i1480u->rx_skb->protocol = eth_type_trans(i1480u->rx_skb, net_dev);
- net_dev->stats.rx_packets++;
- net_dev->stats.rx_bytes += i1480u->rx_untd_pkt_size;
-
- netif_rx(i1480u->rx_skb); /* deliver */
-out:
- i1480u->rx_skb = NULL;
- i1480u->rx_untd_pkt_size = 0;
-}
-
-
-/*
- * Process a buffer of data received from the USB RX endpoint
- *
- * First fragment arrives with next or last fragment. All other fragments
- * arrive alone.
- *
- * /me hates long functions.
- */
-static
-void i1480u_rx_buffer(struct i1480u_rx_buf *rx_buf)
-{
- unsigned pkt_completed = 0; /* !0 when we got all pkt fragments */
- size_t untd_hdr_size, untd_frg_size;
- size_t i1480u_hdr_size;
- struct wlp_rx_hdr *i1480u_hdr = NULL;
-
- struct i1480u *i1480u = rx_buf->i1480u;
- struct sk_buff *skb = rx_buf->data;
- int size_left = rx_buf->urb->actual_length;
- void *ptr = rx_buf->urb->transfer_buffer; /* also rx_buf->data->data */
- struct untd_hdr *untd_hdr;
-
- struct net_device *net_dev = i1480u->net_dev;
- struct device *dev = &i1480u->usb_iface->dev;
- struct sk_buff *new_skb;
-
-#if 0
- dev_fnstart(dev,
- "(i1480u %p ptr %p size_left %zu)\n", i1480u, ptr, size_left);
- dev_err(dev, "RX packet, %zu bytes\n", size_left);
- dump_bytes(dev, ptr, size_left);
-#endif
- i1480u_hdr_size = sizeof(struct wlp_rx_hdr);
-
- while (size_left > 0) {
- if (pkt_completed) {
- i1480u_drop(i1480u, "RX: fragment follows completed"
- "packet in same buffer. Dropping\n");
- break;
- }
- untd_hdr = ptr;
- if (size_left < sizeof(*untd_hdr)) { /* Check the UNTD header */
- i1480u_drop(i1480u, "RX: short UNTD header! Dropping\n");
- goto out;
- }
- if (unlikely(untd_hdr_rx_tx(untd_hdr) == 0)) { /* Paranoia: TX set? */
- i1480u_drop(i1480u, "RX: TX bit set! Dropping\n");
- goto out;
- }
- switch (untd_hdr_type(untd_hdr)) { /* Check the UNTD header type */
- case i1480u_PKT_FRAG_1ST: {
- struct untd_hdr_1st *untd_hdr_1st = (void *) untd_hdr;
- dev_dbg(dev, "1st fragment\n");
- untd_hdr_size = sizeof(struct untd_hdr_1st);
- if (i1480u->rx_skb != NULL)
- i1480u_fix(i1480u, "RX: 1st fragment out of "
- "sequence! Fixing\n");
- if (size_left < untd_hdr_size + i1480u_hdr_size) {
- i1480u_drop(i1480u, "RX: short 1st fragment! "
- "Dropping\n");
- goto out;
- }
- i1480u->rx_untd_pkt_size = le16_to_cpu(untd_hdr->len)
- - i1480u_hdr_size;
- untd_frg_size = le16_to_cpu(untd_hdr_1st->fragment_len);
- if (size_left < untd_hdr_size + untd_frg_size) {
- i1480u_drop(i1480u,
- "RX: short payload! Dropping\n");
- goto out;
- }
- i1480u->rx_skb = skb;
- i1480u_hdr = (void *) untd_hdr_1st + untd_hdr_size;
- i1480u->rx_srcaddr = i1480u_hdr->srcaddr;
- skb_put(i1480u->rx_skb, untd_hdr_size + untd_frg_size);
- skb_pull(i1480u->rx_skb, untd_hdr_size + i1480u_hdr_size);
- stats_add_sample(&i1480u->lqe_stats, (s8) i1480u_hdr->LQI - 7);
- stats_add_sample(&i1480u->rssi_stats, i1480u_hdr->RSSI + 18);
- rx_buf->data = NULL; /* need to create new buffer */
- break;
- }
- case i1480u_PKT_FRAG_NXT: {
- dev_dbg(dev, "nxt fragment\n");
- untd_hdr_size = sizeof(struct untd_hdr_rst);
- if (i1480u->rx_skb == NULL) {
- i1480u_drop(i1480u, "RX: next fragment out of "
- "sequence! Dropping\n");
- goto out;
- }
- if (size_left < untd_hdr_size) {
- i1480u_drop(i1480u, "RX: short NXT fragment! "
- "Dropping\n");
- goto out;
- }
- untd_frg_size = le16_to_cpu(untd_hdr->len);
- if (size_left < untd_hdr_size + untd_frg_size) {
- i1480u_drop(i1480u,
- "RX: short payload! Dropping\n");
- goto out;
- }
- memmove(skb_put(i1480u->rx_skb, untd_frg_size),
- ptr + untd_hdr_size, untd_frg_size);
- break;
- }
- case i1480u_PKT_FRAG_LST: {
- dev_dbg(dev, "Lst fragment\n");
- untd_hdr_size = sizeof(struct untd_hdr_rst);
- if (i1480u->rx_skb == NULL) {
- i1480u_drop(i1480u, "RX: last fragment out of "
- "sequence! Dropping\n");
- goto out;
- }
- if (size_left < untd_hdr_size) {
- i1480u_drop(i1480u, "RX: short LST fragment! "
- "Dropping\n");
- goto out;
- }
- untd_frg_size = le16_to_cpu(untd_hdr->len);
- if (size_left < untd_frg_size + untd_hdr_size) {
- i1480u_drop(i1480u,
- "RX: short payload! Dropping\n");
- goto out;
- }
- memmove(skb_put(i1480u->rx_skb, untd_frg_size),
- ptr + untd_hdr_size, untd_frg_size);
- pkt_completed = 1;
- break;
- }
- case i1480u_PKT_FRAG_CMP: {
- dev_dbg(dev, "cmp fragment\n");
- untd_hdr_size = sizeof(struct untd_hdr_cmp);
- if (i1480u->rx_skb != NULL)
- i1480u_fix(i1480u, "RX: fix out-of-sequence CMP"
- " fragment!\n");
- if (size_left < untd_hdr_size + i1480u_hdr_size) {
- i1480u_drop(i1480u, "RX: short CMP fragment! "
- "Dropping\n");
- goto out;
- }
- i1480u->rx_untd_pkt_size = le16_to_cpu(untd_hdr->len);
- untd_frg_size = i1480u->rx_untd_pkt_size;
- if (size_left < i1480u->rx_untd_pkt_size + untd_hdr_size) {
- i1480u_drop(i1480u,
- "RX: short payload! Dropping\n");
- goto out;
- }
- i1480u->rx_skb = skb;
- i1480u_hdr = (void *) untd_hdr + untd_hdr_size;
- i1480u->rx_srcaddr = i1480u_hdr->srcaddr;
- stats_add_sample(&i1480u->lqe_stats, (s8) i1480u_hdr->LQI - 7);
- stats_add_sample(&i1480u->rssi_stats, i1480u_hdr->RSSI + 18);
- skb_put(i1480u->rx_skb, untd_hdr_size + i1480u->rx_untd_pkt_size);
- skb_pull(i1480u->rx_skb, untd_hdr_size + i1480u_hdr_size);
- rx_buf->data = NULL; /* for hand off skb to network stack */
- pkt_completed = 1;
- i1480u->rx_untd_pkt_size -= i1480u_hdr_size; /* accurate stat */
- break;
- }
- default:
- i1480u_drop(i1480u, "RX: unknown packet type %u! "
- "Dropping\n", untd_hdr_type(untd_hdr));
- goto out;
- }
- size_left -= untd_hdr_size + untd_frg_size;
- if (size_left > 0)
- ptr += untd_hdr_size + untd_frg_size;
- }
- if (pkt_completed)
- i1480u_skb_deliver(i1480u);
-out:
- /* recreate needed RX buffers*/
- if (rx_buf->data == NULL) {
- /* buffer is being used to receive packet, create new */
- new_skb = dev_alloc_skb(i1480u_MAX_RX_PKT_SIZE);
- if (!new_skb) {
- if (printk_ratelimit())
- dev_err(dev,
- "RX: cannot allocate RX buffer\n");
- } else {
- new_skb->dev = net_dev;
- new_skb->ip_summed = CHECKSUM_NONE;
- skb_reserve(new_skb, 2);
- rx_buf->data = new_skb;
- }
- }
- return;
-}
-
-
-/*
- * Called when an RX URB has finished receiving or has found some kind
- * of error condition.
- *
- * LIMITATIONS:
- *
- * - We read USB-transfers, each transfer contains a SINGLE fragment
- * (can contain a complete packet, or a 1st, next, or last fragment
- * of a packet).
- * Looks like a transfer can contain more than one fragment (07/18/06)
- *
- * - Each transfer buffer is the size of the maximum packet size (minus
- * headroom), i1480u_MAX_PKT_SIZE - 2
- *
- * - We always read the full USB-transfer, no partials.
- *
- * - Each transfer is read directly into a skb. This skb will be used to
- * send data to the upper layers if it is the first fragment or a complete
- * packet. In the other cases the data will be copied from the skb to
- * another skb that is being prepared for the upper layers from a prev
- * first fragment.
- *
- * It is simply too much of a pain. Gosh, there should be a unified
- * SG infrastructure for *everything* [so that I could declare a SG
- * buffer, pass it to USB for receiving, append some space to it if
- * I wish, receive more until I have the whole chunk, adapt
- * pointers on each fragment to remove hardware headers and then
- * attach that to an skbuff and netif_rx()].
- */
-void i1480u_rx_cb(struct urb *urb)
-{
- int result;
- int do_parse_buffer = 1;
- struct i1480u_rx_buf *rx_buf = urb->context;
- struct i1480u *i1480u = rx_buf->i1480u;
- struct device *dev = &i1480u->usb_iface->dev;
- unsigned long flags;
- u8 rx_buf_idx = rx_buf - i1480u->rx_buf;
-
- switch (urb->status) {
- case 0:
- break;
- case -ECONNRESET: /* Not an error, but a controlled situation; */
- case -ENOENT: /* (we killed the URB)...so, no broadcast */
- case -ESHUTDOWN: /* going away! */
- dev_err(dev, "RX URB[%u]: goind down %d\n",
- rx_buf_idx, urb->status);
- goto error;
- default:
- dev_err(dev, "RX URB[%u]: unknown status %d\n",
- rx_buf_idx, urb->status);
- if (edc_inc(&i1480u->rx_errors, EDC_MAX_ERRORS,
- EDC_ERROR_TIMEFRAME)) {
- dev_err(dev, "RX: max acceptable errors exceeded,"
- " resetting device.\n");
- i1480u_rx_unlink_urbs(i1480u);
- wlp_reset_all(&i1480u->wlp);
- goto error;
- }
- do_parse_buffer = 0;
- break;
- }
- spin_lock_irqsave(&i1480u->lock, flags);
- /* chew the data fragments, extract network packets */
- if (do_parse_buffer) {
- i1480u_rx_buffer(rx_buf);
- if (rx_buf->data) {
- rx_buf->urb->transfer_buffer = rx_buf->data->data;
- result = usb_submit_urb(rx_buf->urb, GFP_ATOMIC);
- if (result < 0) {
- dev_err(dev, "RX URB[%u]: cannot submit %d\n",
- rx_buf_idx, result);
- }
- }
- }
- spin_unlock_irqrestore(&i1480u->lock, flags);
-error:
- return;
-}
-
+++ /dev/null
-/*
- * WUSB Wire Adapter: WLP interface
- * Sysfs interfaces
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * FIXME: docs
- */
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/device.h>
-
-#include "i1480u-wlp.h"
-
-
-/**
- *
- * @dev: Class device from the net_device; assumed refcnted.
- *
- * Yes, I don't lock--we assume it is refcounted and I am getting a
- * single byte value that is kind of atomic to read.
- */
-ssize_t uwb_phy_rate_show(const struct wlp_options *options, char *buf)
-{
- return sprintf(buf, "%u\n",
- wlp_tx_hdr_phy_rate(&options->def_tx_hdr));
-}
-EXPORT_SYMBOL_GPL(uwb_phy_rate_show);
-
-
-ssize_t uwb_phy_rate_store(struct wlp_options *options,
- const char *buf, size_t size)
-{
- ssize_t result;
- unsigned rate;
-
- result = sscanf(buf, "%u\n", &rate);
- if (result != 1) {
- result = -EINVAL;
- goto out;
- }
- result = -EINVAL;
- if (rate >= UWB_PHY_RATE_INVALID)
- goto out;
- wlp_tx_hdr_set_phy_rate(&options->def_tx_hdr, rate);
- result = 0;
-out:
- return result < 0 ? result : size;
-}
-EXPORT_SYMBOL_GPL(uwb_phy_rate_store);
-
-
-ssize_t uwb_rts_cts_show(const struct wlp_options *options, char *buf)
-{
- return sprintf(buf, "%u\n",
- wlp_tx_hdr_rts_cts(&options->def_tx_hdr));
-}
-EXPORT_SYMBOL_GPL(uwb_rts_cts_show);
-
-
-ssize_t uwb_rts_cts_store(struct wlp_options *options,
- const char *buf, size_t size)
-{
- ssize_t result;
- unsigned value;
-
- result = sscanf(buf, "%u\n", &value);
- if (result != 1) {
- result = -EINVAL;
- goto out;
- }
- result = -EINVAL;
- wlp_tx_hdr_set_rts_cts(&options->def_tx_hdr, !!value);
- result = 0;
-out:
- return result < 0 ? result : size;
-}
-EXPORT_SYMBOL_GPL(uwb_rts_cts_store);
-
-
-ssize_t uwb_ack_policy_show(const struct wlp_options *options, char *buf)
-{
- return sprintf(buf, "%u\n",
- wlp_tx_hdr_ack_policy(&options->def_tx_hdr));
-}
-EXPORT_SYMBOL_GPL(uwb_ack_policy_show);
-
-
-ssize_t uwb_ack_policy_store(struct wlp_options *options,
- const char *buf, size_t size)
-{
- ssize_t result;
- unsigned value;
-
- result = sscanf(buf, "%u\n", &value);
- if (result != 1 || value > UWB_ACK_B_REQ) {
- result = -EINVAL;
- goto out;
- }
- wlp_tx_hdr_set_ack_policy(&options->def_tx_hdr, value);
- result = 0;
-out:
- return result < 0 ? result : size;
-}
-EXPORT_SYMBOL_GPL(uwb_ack_policy_store);
-
-
-/**
- * Show the PCA base priority.
- *
- * We can access without locking, as the value is (for now) orthogonal
- * to other values.
- */
-ssize_t uwb_pca_base_priority_show(const struct wlp_options *options,
- char *buf)
-{
- return sprintf(buf, "%u\n",
- options->pca_base_priority);
-}
-EXPORT_SYMBOL_GPL(uwb_pca_base_priority_show);
-
-
-/**
- * Set the PCA base priority.
- *
- * We can access without locking, as the value is (for now) orthogonal
- * to other values.
- */
-ssize_t uwb_pca_base_priority_store(struct wlp_options *options,
- const char *buf, size_t size)
-{
- ssize_t result = -EINVAL;
- u8 pca_base_priority;
-
- result = sscanf(buf, "%hhu\n", &pca_base_priority);
- if (result != 1) {
- result = -EINVAL;
- goto out;
- }
- result = -EINVAL;
- if (pca_base_priority >= 8)
- goto out;
- options->pca_base_priority = pca_base_priority;
- /* Update TX header if we are currently using PCA. */
- if (result >= 0 && (wlp_tx_hdr_delivery_id_type(&options->def_tx_hdr) & WLP_DRP) == 0)
- wlp_tx_hdr_set_delivery_id_type(&options->def_tx_hdr, options->pca_base_priority);
- result = 0;
-out:
- return result < 0 ? result : size;
-}
-EXPORT_SYMBOL_GPL(uwb_pca_base_priority_store);
-
-/**
- * Show current inflight values
- *
- * Will print the current MAX and THRESHOLD values for the basic flow
- * control. In addition it will report how many times the TX queue needed
- * to be restarted since the last time this query was made.
- */
-static ssize_t wlp_tx_inflight_show(struct i1480u_tx_inflight *inflight,
- char *buf)
-{
- ssize_t result;
- unsigned long sec_elapsed = (jiffies - inflight->restart_ts)/HZ;
- unsigned long restart_count = atomic_read(&inflight->restart_count);
-
- result = scnprintf(buf, PAGE_SIZE, "%lu %lu %d %lu %lu %lu\n"
- "#read: threshold max inflight_count restarts "
- "seconds restarts/sec\n"
- "#write: threshold max\n",
- inflight->threshold, inflight->max,
- atomic_read(&inflight->count),
- restart_count, sec_elapsed,
- sec_elapsed == 0 ? 0 : restart_count/sec_elapsed);
- inflight->restart_ts = jiffies;
- atomic_set(&inflight->restart_count, 0);
- return result;
-}
-
-static
-ssize_t wlp_tx_inflight_store(struct i1480u_tx_inflight *inflight,
- const char *buf, size_t size)
-{
- unsigned long in_threshold, in_max;
- ssize_t result;
- result = sscanf(buf, "%lu %lu", &in_threshold, &in_max);
- if (result != 2)
- return -EINVAL;
- if (in_max <= in_threshold)
- return -EINVAL;
- inflight->max = in_max;
- inflight->threshold = in_threshold;
- return size;
-}
-/*
- * Glue (or function adaptors) for accesing info on sysfs
- *
- * [we need this indirection because the PCI driver does almost the
- * same]
- *
- * Linux 2.6.21 changed how 'struct netdevice' does attributes (from
- * having a 'struct class_dev' to having a 'struct device'). That is
- * quite of a pain.
- *
- * So we try to abstract that here. i1480u_SHOW() and i1480u_STORE()
- * create adaptors for extracting the 'struct i1480u' from a 'struct
- * dev' and calling a function for doing a sysfs operation (as we have
- * them factorized already). i1480u_ATTR creates the attribute file
- * (CLASS_DEVICE_ATTR or DEVICE_ATTR) and i1480u_ATTR_NAME produces a
- * class_device_attr_NAME or device_attr_NAME (for group registration).
- */
-
-#define i1480u_SHOW(name, fn, param) \
-static ssize_t i1480u_show_##name(struct device *dev, \
- struct device_attribute *attr,\
- char *buf) \
-{ \
- struct i1480u *i1480u = netdev_priv(to_net_dev(dev)); \
- return fn(&i1480u->param, buf); \
-}
-
-#define i1480u_STORE(name, fn, param) \
-static ssize_t i1480u_store_##name(struct device *dev, \
- struct device_attribute *attr,\
- const char *buf, size_t size)\
-{ \
- struct i1480u *i1480u = netdev_priv(to_net_dev(dev)); \
- return fn(&i1480u->param, buf, size); \
-}
-
-#define i1480u_ATTR(name, perm) static DEVICE_ATTR(name, perm, \
- i1480u_show_##name,\
- i1480u_store_##name)
-
-#define i1480u_ATTR_SHOW(name) static DEVICE_ATTR(name, \
- S_IRUGO, \
- i1480u_show_##name, NULL)
-
-#define i1480u_ATTR_NAME(a) (dev_attr_##a)
-
-
-/*
- * Sysfs adaptors
- */
-i1480u_SHOW(uwb_phy_rate, uwb_phy_rate_show, options);
-i1480u_STORE(uwb_phy_rate, uwb_phy_rate_store, options);
-i1480u_ATTR(uwb_phy_rate, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(uwb_rts_cts, uwb_rts_cts_show, options);
-i1480u_STORE(uwb_rts_cts, uwb_rts_cts_store, options);
-i1480u_ATTR(uwb_rts_cts, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(uwb_ack_policy, uwb_ack_policy_show, options);
-i1480u_STORE(uwb_ack_policy, uwb_ack_policy_store, options);
-i1480u_ATTR(uwb_ack_policy, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(uwb_pca_base_priority, uwb_pca_base_priority_show, options);
-i1480u_STORE(uwb_pca_base_priority, uwb_pca_base_priority_store, options);
-i1480u_ATTR(uwb_pca_base_priority, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(wlp_eda, wlp_eda_show, wlp);
-i1480u_STORE(wlp_eda, wlp_eda_store, wlp);
-i1480u_ATTR(wlp_eda, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(wlp_uuid, wlp_uuid_show, wlp);
-i1480u_STORE(wlp_uuid, wlp_uuid_store, wlp);
-i1480u_ATTR(wlp_uuid, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(wlp_dev_name, wlp_dev_name_show, wlp);
-i1480u_STORE(wlp_dev_name, wlp_dev_name_store, wlp);
-i1480u_ATTR(wlp_dev_name, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(wlp_dev_manufacturer, wlp_dev_manufacturer_show, wlp);
-i1480u_STORE(wlp_dev_manufacturer, wlp_dev_manufacturer_store, wlp);
-i1480u_ATTR(wlp_dev_manufacturer, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(wlp_dev_model_name, wlp_dev_model_name_show, wlp);
-i1480u_STORE(wlp_dev_model_name, wlp_dev_model_name_store, wlp);
-i1480u_ATTR(wlp_dev_model_name, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(wlp_dev_model_nr, wlp_dev_model_nr_show, wlp);
-i1480u_STORE(wlp_dev_model_nr, wlp_dev_model_nr_store, wlp);
-i1480u_ATTR(wlp_dev_model_nr, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(wlp_dev_serial, wlp_dev_serial_show, wlp);
-i1480u_STORE(wlp_dev_serial, wlp_dev_serial_store, wlp);
-i1480u_ATTR(wlp_dev_serial, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(wlp_dev_prim_category, wlp_dev_prim_category_show, wlp);
-i1480u_STORE(wlp_dev_prim_category, wlp_dev_prim_category_store, wlp);
-i1480u_ATTR(wlp_dev_prim_category, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(wlp_dev_prim_OUI, wlp_dev_prim_OUI_show, wlp);
-i1480u_STORE(wlp_dev_prim_OUI, wlp_dev_prim_OUI_store, wlp);
-i1480u_ATTR(wlp_dev_prim_OUI, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(wlp_dev_prim_OUI_sub, wlp_dev_prim_OUI_sub_show, wlp);
-i1480u_STORE(wlp_dev_prim_OUI_sub, wlp_dev_prim_OUI_sub_store, wlp);
-i1480u_ATTR(wlp_dev_prim_OUI_sub, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(wlp_dev_prim_subcat, wlp_dev_prim_subcat_show, wlp);
-i1480u_STORE(wlp_dev_prim_subcat, wlp_dev_prim_subcat_store, wlp);
-i1480u_ATTR(wlp_dev_prim_subcat, S_IRUGO | S_IWUSR);
-
-i1480u_SHOW(wlp_neighborhood, wlp_neighborhood_show, wlp);
-i1480u_ATTR_SHOW(wlp_neighborhood);
-
-i1480u_SHOW(wss_activate, wlp_wss_activate_show, wlp.wss);
-i1480u_STORE(wss_activate, wlp_wss_activate_store, wlp.wss);
-i1480u_ATTR(wss_activate, S_IRUGO | S_IWUSR);
-
-/*
- * Show the (min, max, avg) Line Quality Estimate (LQE, in dB) as over
- * the last 256 received WLP frames (ECMA-368 13.3).
- *
- * [the -7dB that have to be substracted from the LQI to make the LQE
- * are already taken into account].
- */
-i1480u_SHOW(wlp_lqe, stats_show, lqe_stats);
-i1480u_STORE(wlp_lqe, stats_store, lqe_stats);
-i1480u_ATTR(wlp_lqe, S_IRUGO | S_IWUSR);
-
-/*
- * Show the Receive Signal Strength Indicator averaged over all the
- * received WLP frames (ECMA-368 13.3). Still is not clear what
- * this value is, but is kind of a percentage of the signal strength
- * at the antenna.
- */
-i1480u_SHOW(wlp_rssi, stats_show, rssi_stats);
-i1480u_STORE(wlp_rssi, stats_store, rssi_stats);
-i1480u_ATTR(wlp_rssi, S_IRUGO | S_IWUSR);
-
-/**
- * We maintain a basic flow control counter. "count" how many TX URBs are
- * outstanding. Only allow "max"
- * TX URBs to be outstanding. If this value is reached the queue will be
- * stopped. The queue will be restarted when there are
- * "threshold" URBs outstanding.
- */
-i1480u_SHOW(wlp_tx_inflight, wlp_tx_inflight_show, tx_inflight);
-i1480u_STORE(wlp_tx_inflight, wlp_tx_inflight_store, tx_inflight);
-i1480u_ATTR(wlp_tx_inflight, S_IRUGO | S_IWUSR);
-
-static struct attribute *i1480u_attrs[] = {
- &i1480u_ATTR_NAME(uwb_phy_rate).attr,
- &i1480u_ATTR_NAME(uwb_rts_cts).attr,
- &i1480u_ATTR_NAME(uwb_ack_policy).attr,
- &i1480u_ATTR_NAME(uwb_pca_base_priority).attr,
- &i1480u_ATTR_NAME(wlp_lqe).attr,
- &i1480u_ATTR_NAME(wlp_rssi).attr,
- &i1480u_ATTR_NAME(wlp_eda).attr,
- &i1480u_ATTR_NAME(wlp_uuid).attr,
- &i1480u_ATTR_NAME(wlp_dev_name).attr,
- &i1480u_ATTR_NAME(wlp_dev_manufacturer).attr,
- &i1480u_ATTR_NAME(wlp_dev_model_name).attr,
- &i1480u_ATTR_NAME(wlp_dev_model_nr).attr,
- &i1480u_ATTR_NAME(wlp_dev_serial).attr,
- &i1480u_ATTR_NAME(wlp_dev_prim_category).attr,
- &i1480u_ATTR_NAME(wlp_dev_prim_OUI).attr,
- &i1480u_ATTR_NAME(wlp_dev_prim_OUI_sub).attr,
- &i1480u_ATTR_NAME(wlp_dev_prim_subcat).attr,
- &i1480u_ATTR_NAME(wlp_neighborhood).attr,
- &i1480u_ATTR_NAME(wss_activate).attr,
- &i1480u_ATTR_NAME(wlp_tx_inflight).attr,
- NULL,
-};
-
-static struct attribute_group i1480u_attr_group = {
- .name = NULL, /* we want them in the same directory */
- .attrs = i1480u_attrs,
-};
-
-int i1480u_sysfs_setup(struct i1480u *i1480u)
-{
- int result;
- struct device *dev = &i1480u->usb_iface->dev;
- result = sysfs_create_group(&i1480u->net_dev->dev.kobj,
- &i1480u_attr_group);
- if (result < 0)
- dev_err(dev, "cannot initialize sysfs attributes: %d\n",
- result);
- return result;
-}
-
-
-void i1480u_sysfs_release(struct i1480u *i1480u)
-{
- sysfs_remove_group(&i1480u->net_dev->dev.kobj,
- &i1480u_attr_group);
-}
+++ /dev/null
-/*
- * WUSB Wire Adapter: WLP interface
- * Deal with TX (massaging data to transmit, handling it)
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * Transmission engine. Get an skb, create from that a WLP transmit
- * context, add a WLP TX header (which we keep prefilled in the
- * device's instance), fill out the target-specific fields and
- * fire it.
- *
- * ROADMAP:
- *
- * Entry points:
- *
- * i1480u_tx_release(): called by i1480u_disconnect() to release
- * pending tx contexts.
- *
- * i1480u_tx_cb(): callback for TX contexts (USB URBs)
- * i1480u_tx_destroy():
- *
- * i1480u_tx_timeout(): called for timeout handling from the
- * network stack.
- *
- * i1480u_hard_start_xmit(): called for transmitting an skb from
- * the network stack. Will interact with WLP
- * substack to verify and prepare frame.
- * i1480u_xmit_frame(): actual transmission on hardware
- *
- * i1480u_tx_create() Creates TX context
- * i1480u_tx_create_1() For packets in 1 fragment
- * i1480u_tx_create_n() For packets in >1 fragments
- *
- * TODO:
- *
- * - FIXME: rewrite using usb_sg_*(), add asynch support to
- * usb_sg_*(). It might not make too much sense as most of
- * the times the MTU will be smaller than one page...
- */
-
-#include <linux/slab.h>
-#include "i1480u-wlp.h"
-
-enum {
- /* This is only for Next and Last TX packets */
- i1480u_MAX_PL_SIZE = i1480u_MAX_FRG_SIZE
- - sizeof(struct untd_hdr_rst),
-};
-
-/* Free resources allocated to a i1480u tx context. */
-static
-void i1480u_tx_free(struct i1480u_tx *wtx)
-{
- kfree(wtx->buf);
- if (wtx->skb)
- dev_kfree_skb_irq(wtx->skb);
- usb_free_urb(wtx->urb);
- kfree(wtx);
-}
-
-static
-void i1480u_tx_destroy(struct i1480u *i1480u, struct i1480u_tx *wtx)
-{
- unsigned long flags;
- spin_lock_irqsave(&i1480u->tx_list_lock, flags); /* not active any more */
- list_del(&wtx->list_node);
- i1480u_tx_free(wtx);
- spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
-}
-
-static
-void i1480u_tx_unlink_urbs(struct i1480u *i1480u)
-{
- unsigned long flags;
- struct i1480u_tx *wtx, *next;
-
- spin_lock_irqsave(&i1480u->tx_list_lock, flags);
- list_for_each_entry_safe(wtx, next, &i1480u->tx_list, list_node) {
- usb_unlink_urb(wtx->urb);
- }
- spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
-}
-
-
-/*
- * Callback for a completed tx USB URB.
- *
- * TODO:
- *
- * - FIXME: recover errors more gracefully
- * - FIXME: handle NAKs (I dont think they come here) for flow ctl
- */
-static
-void i1480u_tx_cb(struct urb *urb)
-{
- struct i1480u_tx *wtx = urb->context;
- struct i1480u *i1480u = wtx->i1480u;
- struct net_device *net_dev = i1480u->net_dev;
- struct device *dev = &i1480u->usb_iface->dev;
- unsigned long flags;
-
- switch (urb->status) {
- case 0:
- spin_lock_irqsave(&i1480u->lock, flags);
- net_dev->stats.tx_packets++;
- net_dev->stats.tx_bytes += urb->actual_length;
- spin_unlock_irqrestore(&i1480u->lock, flags);
- break;
- case -ECONNRESET: /* Not an error, but a controlled situation; */
- case -ENOENT: /* (we killed the URB)...so, no broadcast */
- dev_dbg(dev, "notif endp: reset/noent %d\n", urb->status);
- netif_stop_queue(net_dev);
- break;
- case -ESHUTDOWN: /* going away! */
- dev_dbg(dev, "notif endp: down %d\n", urb->status);
- netif_stop_queue(net_dev);
- break;
- default:
- dev_err(dev, "TX: unknown URB status %d\n", urb->status);
- if (edc_inc(&i1480u->tx_errors, EDC_MAX_ERRORS,
- EDC_ERROR_TIMEFRAME)) {
- dev_err(dev, "TX: max acceptable errors exceeded."
- "Reset device.\n");
- netif_stop_queue(net_dev);
- i1480u_tx_unlink_urbs(i1480u);
- wlp_reset_all(&i1480u->wlp);
- }
- break;
- }
- i1480u_tx_destroy(i1480u, wtx);
- if (atomic_dec_return(&i1480u->tx_inflight.count)
- <= i1480u->tx_inflight.threshold
- && netif_queue_stopped(net_dev)
- && i1480u->tx_inflight.threshold != 0) {
- netif_start_queue(net_dev);
- atomic_inc(&i1480u->tx_inflight.restart_count);
- }
- return;
-}
-
-
-/*
- * Given a buffer that doesn't fit in a single fragment, create an
- * scatter/gather structure for delivery to the USB pipe.
- *
- * Implements functionality of i1480u_tx_create().
- *
- * @wtx: tx descriptor
- * @skb: skb to send
- * @gfp_mask: gfp allocation mask
- * @returns: Pointer to @wtx if ok, NULL on error.
- *
- * Sorry, TOO LONG a function, but breaking it up is kind of hard
- *
- * This will break the buffer in chunks smaller than
- * i1480u_MAX_FRG_SIZE (including the header) and add proper headers
- * to each:
- *
- * 1st header \
- * i1480 tx header | fragment 1
- * fragment data /
- * nxt header \ fragment 2
- * fragment data /
- * ..
- * ..
- * last header \ fragment 3
- * last fragment data /
- *
- * This does not fill the i1480 TX header, it is left up to the
- * caller to do that; you can get it from @wtx->wlp_tx_hdr.
- *
- * This function consumes the skb unless there is an error.
- */
-static
-int i1480u_tx_create_n(struct i1480u_tx *wtx, struct sk_buff *skb,
- gfp_t gfp_mask)
-{
- int result;
- void *pl;
- size_t pl_size;
-
- void *pl_itr, *buf_itr;
- size_t pl_size_left, frgs, pl_size_1st, frg_pl_size = 0;
- struct untd_hdr_1st *untd_hdr_1st;
- struct wlp_tx_hdr *wlp_tx_hdr;
- struct untd_hdr_rst *untd_hdr_rst;
-
- wtx->skb = NULL;
- pl = skb->data;
- pl_itr = pl;
- pl_size = skb->len;
- pl_size_left = pl_size; /* payload size */
- /* First fragment; fits as much as i1480u_MAX_FRG_SIZE minus
- * the headers */
- pl_size_1st = i1480u_MAX_FRG_SIZE
- - sizeof(struct untd_hdr_1st) - sizeof(struct wlp_tx_hdr);
- BUG_ON(pl_size_1st > pl_size);
- pl_size_left -= pl_size_1st;
- /* The rest have an smaller header (no i1480 TX header). We
- * need to break up the payload in blocks smaller than
- * i1480u_MAX_PL_SIZE (payload excluding header). */
- frgs = (pl_size_left + i1480u_MAX_PL_SIZE - 1) / i1480u_MAX_PL_SIZE;
- /* Allocate space for the new buffer. In this new buffer we'll
- * place the headers followed by the data fragment, headers,
- * data fragments, etc..
- */
- result = -ENOMEM;
- wtx->buf_size = sizeof(*untd_hdr_1st)
- + sizeof(*wlp_tx_hdr)
- + frgs * sizeof(*untd_hdr_rst)
- + pl_size;
- wtx->buf = kmalloc(wtx->buf_size, gfp_mask);
- if (wtx->buf == NULL)
- goto error_buf_alloc;
-
- buf_itr = wtx->buf; /* We got the space, let's fill it up */
- /* Fill 1st fragment */
- untd_hdr_1st = buf_itr;
- buf_itr += sizeof(*untd_hdr_1st);
- untd_hdr_set_type(&untd_hdr_1st->hdr, i1480u_PKT_FRAG_1ST);
- untd_hdr_set_rx_tx(&untd_hdr_1st->hdr, 0);
- untd_hdr_1st->hdr.len = cpu_to_le16(pl_size + sizeof(*wlp_tx_hdr));
- untd_hdr_1st->fragment_len =
- cpu_to_le16(pl_size_1st + sizeof(*wlp_tx_hdr));
- memset(untd_hdr_1st->padding, 0, sizeof(untd_hdr_1st->padding));
- /* Set up i1480 header info */
- wlp_tx_hdr = wtx->wlp_tx_hdr = buf_itr;
- buf_itr += sizeof(*wlp_tx_hdr);
- /* Copy the first fragment */
- memcpy(buf_itr, pl_itr, pl_size_1st);
- pl_itr += pl_size_1st;
- buf_itr += pl_size_1st;
-
- /* Now do each remaining fragment */
- result = -EINVAL;
- while (pl_size_left > 0) {
- if (buf_itr + sizeof(*untd_hdr_rst) - wtx->buf
- > wtx->buf_size) {
- printk(KERN_ERR "BUG: no space for header\n");
- goto error_bug;
- }
- untd_hdr_rst = buf_itr;
- buf_itr += sizeof(*untd_hdr_rst);
- if (pl_size_left > i1480u_MAX_PL_SIZE) {
- frg_pl_size = i1480u_MAX_PL_SIZE;
- untd_hdr_set_type(&untd_hdr_rst->hdr, i1480u_PKT_FRAG_NXT);
- } else {
- frg_pl_size = pl_size_left;
- untd_hdr_set_type(&untd_hdr_rst->hdr, i1480u_PKT_FRAG_LST);
- }
- untd_hdr_set_rx_tx(&untd_hdr_rst->hdr, 0);
- untd_hdr_rst->hdr.len = cpu_to_le16(frg_pl_size);
- untd_hdr_rst->padding = 0;
- if (buf_itr + frg_pl_size - wtx->buf
- > wtx->buf_size) {
- printk(KERN_ERR "BUG: no space for payload\n");
- goto error_bug;
- }
- memcpy(buf_itr, pl_itr, frg_pl_size);
- buf_itr += frg_pl_size;
- pl_itr += frg_pl_size;
- pl_size_left -= frg_pl_size;
- }
- dev_kfree_skb_irq(skb);
- return 0;
-
-error_bug:
- printk(KERN_ERR
- "BUG: skb %u bytes\n"
- "BUG: frg_pl_size %zd i1480u_MAX_FRG_SIZE %u\n"
- "BUG: buf_itr %zu buf_size %zu pl_size_left %zu\n",
- skb->len,
- frg_pl_size, i1480u_MAX_FRG_SIZE,
- buf_itr - wtx->buf, wtx->buf_size, pl_size_left);
-
- kfree(wtx->buf);
-error_buf_alloc:
- return result;
-}
-
-
-/*
- * Given a buffer that fits in a single fragment, fill out a @wtx
- * struct for transmitting it down the USB pipe.
- *
- * Uses the fact that we have space reserved in front of the skbuff
- * for hardware headers :]
- *
- * This does not fill the i1480 TX header, it is left up to the
- * caller to do that; you can get it from @wtx->wlp_tx_hdr.
- *
- * @pl: pointer to payload data
- * @pl_size: size of the payuload
- *
- * This function does not consume the @skb.
- */
-static
-int i1480u_tx_create_1(struct i1480u_tx *wtx, struct sk_buff *skb,
- gfp_t gfp_mask)
-{
- struct untd_hdr_cmp *untd_hdr_cmp;
- struct wlp_tx_hdr *wlp_tx_hdr;
-
- wtx->buf = NULL;
- wtx->skb = skb;
- BUG_ON(skb_headroom(skb) < sizeof(*wlp_tx_hdr));
- wlp_tx_hdr = (void *) __skb_push(skb, sizeof(*wlp_tx_hdr));
- wtx->wlp_tx_hdr = wlp_tx_hdr;
- BUG_ON(skb_headroom(skb) < sizeof(*untd_hdr_cmp));
- untd_hdr_cmp = (void *) __skb_push(skb, sizeof(*untd_hdr_cmp));
-
- untd_hdr_set_type(&untd_hdr_cmp->hdr, i1480u_PKT_FRAG_CMP);
- untd_hdr_set_rx_tx(&untd_hdr_cmp->hdr, 0);
- untd_hdr_cmp->hdr.len = cpu_to_le16(skb->len - sizeof(*untd_hdr_cmp));
- untd_hdr_cmp->padding = 0;
- return 0;
-}
-
-
-/*
- * Given a skb to transmit, massage it to become palatable for the TX pipe
- *
- * This will break the buffer in chunks smaller than
- * i1480u_MAX_FRG_SIZE and add proper headers to each.
- *
- * 1st header \
- * i1480 tx header | fragment 1
- * fragment data /
- * nxt header \ fragment 2
- * fragment data /
- * ..
- * ..
- * last header \ fragment 3
- * last fragment data /
- *
- * Each fragment will be always smaller or equal to i1480u_MAX_FRG_SIZE.
- *
- * If the first fragment is smaller than i1480u_MAX_FRG_SIZE, then the
- * following is composed:
- *
- * complete header \
- * i1480 tx header | single fragment
- * packet data /
- *
- * We were going to use s/g support, but because the interface is
- * synch and at the end there is plenty of overhead to do it, it
- * didn't seem that worth for data that is going to be smaller than
- * one page.
- */
-static
-struct i1480u_tx *i1480u_tx_create(struct i1480u *i1480u,
- struct sk_buff *skb, gfp_t gfp_mask)
-{
- int result;
- struct usb_endpoint_descriptor *epd;
- int usb_pipe;
- unsigned long flags;
-
- struct i1480u_tx *wtx;
- const size_t pl_max_size =
- i1480u_MAX_FRG_SIZE - sizeof(struct untd_hdr_cmp)
- - sizeof(struct wlp_tx_hdr);
-
- wtx = kmalloc(sizeof(*wtx), gfp_mask);
- if (wtx == NULL)
- goto error_wtx_alloc;
- wtx->urb = usb_alloc_urb(0, gfp_mask);
- if (wtx->urb == NULL)
- goto error_urb_alloc;
- epd = &i1480u->usb_iface->cur_altsetting->endpoint[2].desc;
- usb_pipe = usb_sndbulkpipe(i1480u->usb_dev, epd->bEndpointAddress);
- /* Fits in a single complete packet or need to split? */
- if (skb->len > pl_max_size) {
- result = i1480u_tx_create_n(wtx, skb, gfp_mask);
- if (result < 0)
- goto error_create;
- usb_fill_bulk_urb(wtx->urb, i1480u->usb_dev, usb_pipe,
- wtx->buf, wtx->buf_size, i1480u_tx_cb, wtx);
- } else {
- result = i1480u_tx_create_1(wtx, skb, gfp_mask);
- if (result < 0)
- goto error_create;
- usb_fill_bulk_urb(wtx->urb, i1480u->usb_dev, usb_pipe,
- skb->data, skb->len, i1480u_tx_cb, wtx);
- }
- spin_lock_irqsave(&i1480u->tx_list_lock, flags);
- list_add(&wtx->list_node, &i1480u->tx_list);
- spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
- return wtx;
-
-error_create:
- kfree(wtx->urb);
-error_urb_alloc:
- kfree(wtx);
-error_wtx_alloc:
- return NULL;
-}
-
-/*
- * Actual fragmentation and transmission of frame
- *
- * @wlp: WLP substack data structure
- * @skb: To be transmitted
- * @dst: Device address of destination
- * @returns: 0 on success, <0 on failure
- *
- * This function can also be called directly (not just from
- * hard_start_xmit), so we also check here if the interface is up before
- * taking sending anything.
- */
-int i1480u_xmit_frame(struct wlp *wlp, struct sk_buff *skb,
- struct uwb_dev_addr *dst)
-{
- int result = -ENXIO;
- struct i1480u *i1480u = container_of(wlp, struct i1480u, wlp);
- struct device *dev = &i1480u->usb_iface->dev;
- struct net_device *net_dev = i1480u->net_dev;
- struct i1480u_tx *wtx;
- struct wlp_tx_hdr *wlp_tx_hdr;
- static unsigned char dev_bcast[2] = { 0xff, 0xff };
-
- BUG_ON(i1480u->wlp.rc == NULL);
- if ((net_dev->flags & IFF_UP) == 0)
- goto out;
- result = -EBUSY;
- if (atomic_read(&i1480u->tx_inflight.count) >= i1480u->tx_inflight.max) {
- netif_stop_queue(net_dev);
- goto error_max_inflight;
- }
- result = -ENOMEM;
- wtx = i1480u_tx_create(i1480u, skb, GFP_ATOMIC);
- if (unlikely(wtx == NULL)) {
- if (printk_ratelimit())
- dev_err(dev, "TX: no memory for WLP TX URB,"
- "dropping packet (in flight %d)\n",
- atomic_read(&i1480u->tx_inflight.count));
- netif_stop_queue(net_dev);
- goto error_wtx_alloc;
- }
- wtx->i1480u = i1480u;
- /* Fill out the i1480 header; @i1480u->def_tx_hdr read without
- * locking. We do so because they are kind of orthogonal to
- * each other (and thus not changed in an atomic batch).
- * The ETH header is right after the WLP TX header. */
- wlp_tx_hdr = wtx->wlp_tx_hdr;
- *wlp_tx_hdr = i1480u->options.def_tx_hdr;
- wlp_tx_hdr->dstaddr = *dst;
- if (!memcmp(&wlp_tx_hdr->dstaddr, dev_bcast, sizeof(dev_bcast))
- && (wlp_tx_hdr_delivery_id_type(wlp_tx_hdr) & WLP_DRP)) {
- /*Broadcast message directed to DRP host. Send as best effort
- * on PCA. */
- wlp_tx_hdr_set_delivery_id_type(wlp_tx_hdr, i1480u->options.pca_base_priority);
- }
-
- result = usb_submit_urb(wtx->urb, GFP_ATOMIC); /* Go baby */
- if (result < 0) {
- dev_err(dev, "TX: cannot submit URB: %d\n", result);
- /* We leave the freeing of skb to calling function */
- wtx->skb = NULL;
- goto error_tx_urb_submit;
- }
- atomic_inc(&i1480u->tx_inflight.count);
- net_dev->trans_start = jiffies;
- return result;
-
-error_tx_urb_submit:
- i1480u_tx_destroy(i1480u, wtx);
-error_wtx_alloc:
-error_max_inflight:
-out:
- return result;
-}
-
-
-/*
- * Transmit an skb Called when an skbuf has to be transmitted
- *
- * The skb is first passed to WLP substack to ensure this is a valid
- * frame. If valid the device address of destination will be filled and
- * the WLP header prepended to the skb. If this step fails we fake sending
- * the frame, if we return an error the network stack will just keep trying.
- *
- * Broadcast frames inside a WSS needs to be treated special as multicast is
- * not supported. A broadcast frame is sent as unicast to each member of the
- * WSS - this is done by the WLP substack when it finds a broadcast frame.
- * So, we test if the WLP substack took over the skb and only transmit it
- * if it has not (been taken over).
- *
- * @net_dev->xmit_lock is held
- */
-netdev_tx_t i1480u_hard_start_xmit(struct sk_buff *skb,
- struct net_device *net_dev)
-{
- int result;
- struct i1480u *i1480u = netdev_priv(net_dev);
- struct device *dev = &i1480u->usb_iface->dev;
- struct uwb_dev_addr dst;
-
- if ((net_dev->flags & IFF_UP) == 0)
- goto error;
- result = wlp_prepare_tx_frame(dev, &i1480u->wlp, skb, &dst);
- if (result < 0) {
- dev_err(dev, "WLP verification of TX frame failed (%d). "
- "Dropping packet.\n", result);
- goto error;
- } else if (result == 1) {
- /* trans_start time will be set when WLP actually transmits
- * the frame */
- goto out;
- }
- result = i1480u_xmit_frame(&i1480u->wlp, skb, &dst);
- if (result < 0) {
- dev_err(dev, "Frame TX failed (%d).\n", result);
- goto error;
- }
- return NETDEV_TX_OK;
-error:
- dev_kfree_skb_any(skb);
- net_dev->stats.tx_dropped++;
-out:
- return NETDEV_TX_OK;
-}
-
-
-/*
- * Called when a pkt transmission doesn't complete in a reasonable period
- * Device reset may sleep - do it outside of interrupt context (delayed)
- */
-void i1480u_tx_timeout(struct net_device *net_dev)
-{
- struct i1480u *i1480u = netdev_priv(net_dev);
-
- wlp_reset_all(&i1480u->wlp);
-}
-
-
-void i1480u_tx_release(struct i1480u *i1480u)
-{
- unsigned long flags;
- struct i1480u_tx *wtx, *next;
- int count = 0, empty;
-
- spin_lock_irqsave(&i1480u->tx_list_lock, flags);
- list_for_each_entry_safe(wtx, next, &i1480u->tx_list, list_node) {
- count++;
- usb_unlink_urb(wtx->urb);
- }
- spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
- count = count*10; /* i1480ut 200ms per unlinked urb (intervals of 20ms) */
- /*
- * We don't like this sollution too much (dirty as it is), but
- * it is cheaper than putting a refcount on each i1480u_tx and
- * i1480uting for all of them to go away...
- *
- * Called when no more packets can be added to tx_list
- * so can i1480ut for it to be empty.
- */
- while (1) {
- spin_lock_irqsave(&i1480u->tx_list_lock, flags);
- empty = list_empty(&i1480u->tx_list);
- spin_unlock_irqrestore(&i1480u->tx_list_lock, flags);
- if (empty)
- break;
- count--;
- BUG_ON(count == 0);
- msleep(20);
- }
-}
+++ /dev/null
-obj-$(CONFIG_UWB_WLP) := wlp.o
-
-wlp-objs := \
- driver.o \
- eda.o \
- messages.o \
- sysfs.o \
- txrx.o \
- wlp-lc.o \
- wss-lc.o
+++ /dev/null
-/*
- * WiMedia Logical Link Control Protocol (WLP)
- *
- * Copyright (C) 2007 Intel Corporation
- * Reinette Chatre <reinette.chatre@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * Life cycle of WLP substack
- *
- * FIXME: Docs
- */
-
-#include <linux/module.h>
-
-static int __init wlp_subsys_init(void)
-{
- return 0;
-}
-module_init(wlp_subsys_init);
-
-static void __exit wlp_subsys_exit(void)
-{
- return;
-}
-module_exit(wlp_subsys_exit);
-
-MODULE_AUTHOR("Reinette Chatre <reinette.chatre@intel.com>");
-MODULE_DESCRIPTION("WiMedia Logical Link Control Protocol (WLP)");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * WUSB Wire Adapter: WLP interface
- * Ethernet to device address cache
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * We need to be able to map ethernet addresses to device addresses
- * and back because there is not explicit relationship between the eth
- * addresses used in the ETH frames and the device addresses (no, it
- * would not have been simpler to force as ETH address the MBOA MAC
- * address...no, not at all :).
- *
- * A device has one MBOA MAC address and one device address. It is possible
- * for a device to have more than one virtual MAC address (although a
- * virtual address can be the same as the MBOA MAC address). The device
- * address is guaranteed to be unique among the devices in the extended
- * beacon group (see ECMA 17.1.1). We thus use the device address as index
- * to this cache. We do allow searching based on virtual address as this
- * is how Ethernet frames will be addressed.
- *
- * We need to support virtual EUI-48. Although, right now the virtual
- * EUI-48 will always be the same as the MAC SAP address. The EDA cache
- * entry thus contains a MAC SAP address as well as the virtual address
- * (used to map the network stack address to a neighbor). When we move
- * to support more than one virtual MAC on a host then this organization
- * will have to change. Perhaps a neighbor has a list of WSSs, each with a
- * tag and virtual EUI-48.
- *
- * On data transmission
- * it is used to determine if the neighbor is connected and what WSS it
- * belongs to. With this we know what tag to add to the WLP frame. Storing
- * the WSS in the EDA cache may be overkill because we only support one
- * WSS. Hopefully we will support more than one WSS at some point.
- * On data reception it is used to determine the WSS based on
- * the tag and address of the transmitting neighbor.
- */
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/slab.h>
-#include <linux/wlp.h>
-#include "wlp-internal.h"
-
-
-/* FIXME: cache is not purged, only on device close */
-
-/* FIXME: does not scale, change to dynamic array */
-
-/*
- * Initialize the EDA cache
- *
- * @returns 0 if ok, < 0 errno code on error
- *
- * Call when the interface is being brought up
- *
- * NOTE: Keep it as a separate function as the implementation will
- * change and be more complex.
- */
-void wlp_eda_init(struct wlp_eda *eda)
-{
- INIT_LIST_HEAD(&eda->cache);
- spin_lock_init(&eda->lock);
-}
-
-/*
- * Release the EDA cache
- *
- * @returns 0 if ok, < 0 errno code on error
- *
- * Called when the interface is brought down
- */
-void wlp_eda_release(struct wlp_eda *eda)
-{
- unsigned long flags;
- struct wlp_eda_node *itr, *next;
-
- spin_lock_irqsave(&eda->lock, flags);
- list_for_each_entry_safe(itr, next, &eda->cache, list_node) {
- list_del(&itr->list_node);
- kfree(itr);
- }
- spin_unlock_irqrestore(&eda->lock, flags);
-}
-
-/*
- * Add an address mapping
- *
- * @returns 0 if ok, < 0 errno code on error
- *
- * An address mapping is initially created when the neighbor device is seen
- * for the first time (it is "onair"). At this time the neighbor is not
- * connected or associated with a WSS so we only populate the Ethernet and
- * Device address fields.
- *
- */
-int wlp_eda_create_node(struct wlp_eda *eda,
- const unsigned char eth_addr[ETH_ALEN],
- const struct uwb_dev_addr *dev_addr)
-{
- int result = 0;
- struct wlp_eda_node *itr;
- unsigned long flags;
-
- BUG_ON(dev_addr == NULL || eth_addr == NULL);
- spin_lock_irqsave(&eda->lock, flags);
- list_for_each_entry(itr, &eda->cache, list_node) {
- if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
- printk(KERN_ERR "EDA cache already contains entry "
- "for neighbor %02x:%02x\n",
- dev_addr->data[1], dev_addr->data[0]);
- result = -EEXIST;
- goto out_unlock;
- }
- }
- itr = kzalloc(sizeof(*itr), GFP_ATOMIC);
- if (itr != NULL) {
- memcpy(itr->eth_addr, eth_addr, sizeof(itr->eth_addr));
- itr->dev_addr = *dev_addr;
- list_add(&itr->list_node, &eda->cache);
- } else
- result = -ENOMEM;
-out_unlock:
- spin_unlock_irqrestore(&eda->lock, flags);
- return result;
-}
-
-/*
- * Remove entry from EDA cache
- *
- * This is done when the device goes off air.
- */
-void wlp_eda_rm_node(struct wlp_eda *eda, const struct uwb_dev_addr *dev_addr)
-{
- struct wlp_eda_node *itr, *next;
- unsigned long flags;
-
- spin_lock_irqsave(&eda->lock, flags);
- list_for_each_entry_safe(itr, next, &eda->cache, list_node) {
- if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
- list_del(&itr->list_node);
- kfree(itr);
- break;
- }
- }
- spin_unlock_irqrestore(&eda->lock, flags);
-}
-
-/*
- * Update an address mapping
- *
- * @returns 0 if ok, < 0 errno code on error
- */
-int wlp_eda_update_node(struct wlp_eda *eda,
- const struct uwb_dev_addr *dev_addr,
- struct wlp_wss *wss,
- const unsigned char virt_addr[ETH_ALEN],
- const u8 tag, const enum wlp_wss_connect state)
-{
- int result = -ENOENT;
- struct wlp_eda_node *itr;
- unsigned long flags;
-
- spin_lock_irqsave(&eda->lock, flags);
- list_for_each_entry(itr, &eda->cache, list_node) {
- if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
- /* Found it, update it */
- itr->wss = wss;
- memcpy(itr->virt_addr, virt_addr,
- sizeof(itr->virt_addr));
- itr->tag = tag;
- itr->state = state;
- result = 0;
- goto out_unlock;
- }
- }
- /* Not found */
-out_unlock:
- spin_unlock_irqrestore(&eda->lock, flags);
- return result;
-}
-
-/*
- * Update only state field of an address mapping
- *
- * @returns 0 if ok, < 0 errno code on error
- */
-int wlp_eda_update_node_state(struct wlp_eda *eda,
- const struct uwb_dev_addr *dev_addr,
- const enum wlp_wss_connect state)
-{
- int result = -ENOENT;
- struct wlp_eda_node *itr;
- unsigned long flags;
-
- spin_lock_irqsave(&eda->lock, flags);
- list_for_each_entry(itr, &eda->cache, list_node) {
- if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
- /* Found it, update it */
- itr->state = state;
- result = 0;
- goto out_unlock;
- }
- }
- /* Not found */
-out_unlock:
- spin_unlock_irqrestore(&eda->lock, flags);
- return result;
-}
-
-/*
- * Return contents of EDA cache entry
- *
- * @dev_addr: index to EDA cache
- * @eda_entry: pointer to where contents of EDA cache will be copied
- */
-int wlp_copy_eda_node(struct wlp_eda *eda, struct uwb_dev_addr *dev_addr,
- struct wlp_eda_node *eda_entry)
-{
- int result = -ENOENT;
- struct wlp_eda_node *itr;
- unsigned long flags;
-
- spin_lock_irqsave(&eda->lock, flags);
- list_for_each_entry(itr, &eda->cache, list_node) {
- if (!memcmp(&itr->dev_addr, dev_addr, sizeof(itr->dev_addr))) {
- *eda_entry = *itr;
- result = 0;
- goto out_unlock;
- }
- }
- /* Not found */
-out_unlock:
- spin_unlock_irqrestore(&eda->lock, flags);
- return result;
-}
-
-/*
- * Execute function for every element in the cache
- *
- * @function: function to execute on element of cache (must be atomic)
- * @priv: private data of function
- * @returns: result of first function that failed, or last function
- * executed if no function failed.
- *
- * Stop executing when function returns error for any element in cache.
- *
- * IMPORTANT: We are using a spinlock here: the function executed on each
- * element has to be atomic.
- */
-int wlp_eda_for_each(struct wlp_eda *eda, wlp_eda_for_each_f function,
- void *priv)
-{
- int result = 0;
- struct wlp *wlp = container_of(eda, struct wlp, eda);
- struct wlp_eda_node *entry;
- unsigned long flags;
-
- spin_lock_irqsave(&eda->lock, flags);
- list_for_each_entry(entry, &eda->cache, list_node) {
- result = (*function)(wlp, entry, priv);
- if (result < 0)
- break;
- }
- spin_unlock_irqrestore(&eda->lock, flags);
- return result;
-}
-
-/*
- * Execute function for single element in the cache (return dev addr)
- *
- * @virt_addr: index into EDA cache used to determine which element to
- * execute the function on
- * @dev_addr: device address of element in cache will be returned using
- * @dev_addr
- * @function: function to execute on element of cache (must be atomic)
- * @priv: private data of function
- * @returns: result of function
- *
- * IMPORTANT: We are using a spinlock here: the function executed on the
- * element has to be atomic.
- */
-int wlp_eda_for_virtual(struct wlp_eda *eda,
- const unsigned char virt_addr[ETH_ALEN],
- struct uwb_dev_addr *dev_addr,
- wlp_eda_for_each_f function,
- void *priv)
-{
- int result = 0;
- struct wlp *wlp = container_of(eda, struct wlp, eda);
- struct wlp_eda_node *itr;
- unsigned long flags;
- int found = 0;
-
- spin_lock_irqsave(&eda->lock, flags);
- list_for_each_entry(itr, &eda->cache, list_node) {
- if (!memcmp(itr->virt_addr, virt_addr,
- sizeof(itr->virt_addr))) {
- result = (*function)(wlp, itr, priv);
- *dev_addr = itr->dev_addr;
- found = 1;
- break;
- }
- }
- if (!found)
- result = -ENODEV;
- spin_unlock_irqrestore(&eda->lock, flags);
- return result;
-}
-
-static const char *__wlp_wss_connect_state[] = { "WLP_WSS_UNCONNECTED",
- "WLP_WSS_CONNECTED",
- "WLP_WSS_CONNECT_FAILED",
-};
-
-static const char *wlp_wss_connect_state_str(unsigned id)
-{
- if (id >= ARRAY_SIZE(__wlp_wss_connect_state))
- return "unknown WSS connection state";
- return __wlp_wss_connect_state[id];
-}
-
-/*
- * View EDA cache from user space
- *
- * A debugging feature to give user visibility into the EDA cache. Also
- * used to display members of WSS to user (called from wlp_wss_members_show())
- */
-ssize_t wlp_eda_show(struct wlp *wlp, char *buf)
-{
- ssize_t result = 0;
- struct wlp_eda_node *entry;
- unsigned long flags;
- struct wlp_eda *eda = &wlp->eda;
- spin_lock_irqsave(&eda->lock, flags);
- result = scnprintf(buf, PAGE_SIZE, "#eth_addr dev_addr wss_ptr "
- "tag state virt_addr\n");
- list_for_each_entry(entry, &eda->cache, list_node) {
- result += scnprintf(buf + result, PAGE_SIZE - result,
- "%pM %02x:%02x %p 0x%02x %s %pM\n",
- entry->eth_addr,
- entry->dev_addr.data[1],
- entry->dev_addr.data[0], entry->wss,
- entry->tag,
- wlp_wss_connect_state_str(entry->state),
- entry->virt_addr);
- if (result >= PAGE_SIZE)
- break;
- }
- spin_unlock_irqrestore(&eda->lock, flags);
- return result;
-}
-EXPORT_SYMBOL_GPL(wlp_eda_show);
-
-/*
- * Add new EDA cache entry based on user input in sysfs
- *
- * Should only be used for debugging.
- *
- * The WSS is assumed to be the only WSS supported. This needs to be
- * redesigned when we support more than one WSS.
- */
-ssize_t wlp_eda_store(struct wlp *wlp, const char *buf, size_t size)
-{
- ssize_t result;
- struct wlp_eda *eda = &wlp->eda;
- u8 eth_addr[6];
- struct uwb_dev_addr dev_addr;
- u8 tag;
- unsigned state;
-
- result = sscanf(buf, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx "
- "%02hhx:%02hhx %02hhx %u\n",
- ð_addr[0], ð_addr[1],
- ð_addr[2], ð_addr[3],
- ð_addr[4], ð_addr[5],
- &dev_addr.data[1], &dev_addr.data[0], &tag, &state);
- switch (result) {
- case 6: /* no dev addr specified -- remove entry NOT IMPLEMENTED */
- /*result = wlp_eda_rm(eda, eth_addr, &dev_addr);*/
- result = -ENOSYS;
- break;
- case 10:
- state = state >= 1 ? 1 : 0;
- result = wlp_eda_create_node(eda, eth_addr, &dev_addr);
- if (result < 0 && result != -EEXIST)
- goto error;
- /* Set virtual addr to be same as MAC */
- result = wlp_eda_update_node(eda, &dev_addr, &wlp->wss,
- eth_addr, tag, state);
- if (result < 0)
- goto error;
- break;
- default: /* bad format */
- result = -EINVAL;
- }
-error:
- return result < 0 ? result : size;
-}
-EXPORT_SYMBOL_GPL(wlp_eda_store);
+++ /dev/null
-/*
- * WiMedia Logical Link Control Protocol (WLP)
- * Message construction and parsing
- *
- * Copyright (C) 2007 Intel Corporation
- * Reinette Chatre <reinette.chatre@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * FIXME: docs
- */
-
-#include <linux/wlp.h>
-#include <linux/slab.h>
-
-#include "wlp-internal.h"
-
-static
-const char *__wlp_assoc_frame[] = {
- [WLP_ASSOC_D1] = "WLP_ASSOC_D1",
- [WLP_ASSOC_D2] = "WLP_ASSOC_D2",
- [WLP_ASSOC_M1] = "WLP_ASSOC_M1",
- [WLP_ASSOC_M2] = "WLP_ASSOC_M2",
- [WLP_ASSOC_M3] = "WLP_ASSOC_M3",
- [WLP_ASSOC_M4] = "WLP_ASSOC_M4",
- [WLP_ASSOC_M5] = "WLP_ASSOC_M5",
- [WLP_ASSOC_M6] = "WLP_ASSOC_M6",
- [WLP_ASSOC_M7] = "WLP_ASSOC_M7",
- [WLP_ASSOC_M8] = "WLP_ASSOC_M8",
- [WLP_ASSOC_F0] = "WLP_ASSOC_F0",
- [WLP_ASSOC_E1] = "WLP_ASSOC_E1",
- [WLP_ASSOC_E2] = "WLP_ASSOC_E2",
- [WLP_ASSOC_C1] = "WLP_ASSOC_C1",
- [WLP_ASSOC_C2] = "WLP_ASSOC_C2",
- [WLP_ASSOC_C3] = "WLP_ASSOC_C3",
- [WLP_ASSOC_C4] = "WLP_ASSOC_C4",
-};
-
-static const char *wlp_assoc_frame_str(unsigned id)
-{
- if (id >= ARRAY_SIZE(__wlp_assoc_frame))
- return "unknown association frame";
- return __wlp_assoc_frame[id];
-}
-
-static const char *__wlp_assc_error[] = {
- "none",
- "Authenticator Failure",
- "Rogue activity suspected",
- "Device busy",
- "Setup Locked",
- "Registrar not ready",
- "Invalid WSS selection",
- "Message timeout",
- "Enrollment session timeout",
- "Device password invalid",
- "Unsupported version",
- "Internal error",
- "Undefined error",
- "Numeric comparison failure",
- "Waiting for user input",
-};
-
-static const char *wlp_assc_error_str(unsigned id)
-{
- if (id >= ARRAY_SIZE(__wlp_assc_error))
- return "unknown WLP association error";
- return __wlp_assc_error[id];
-}
-
-static inline void wlp_set_attr_hdr(struct wlp_attr_hdr *hdr, unsigned type,
- size_t len)
-{
- hdr->type = cpu_to_le16(type);
- hdr->length = cpu_to_le16(len);
-}
-
-/*
- * Populate fields of a constant sized attribute
- *
- * @returns: total size of attribute including size of new value
- *
- * We have two instances of this function (wlp_pset and wlp_set): one takes
- * the value as a parameter, the other takes a pointer to the value as
- * parameter. They thus only differ in how the value is assigned to the
- * attribute.
- *
- * We use sizeof(*attr) - sizeof(struct wlp_attr_hdr) instead of
- * sizeof(type) to be able to use this same code for the structures that
- * contain 8bit enum values and be able to deal with pointer types.
- */
-#define wlp_set(type, type_code, name) \
-static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value) \
-{ \
- wlp_set_attr_hdr(&attr->hdr, type_code, \
- sizeof(*attr) - sizeof(struct wlp_attr_hdr)); \
- attr->name = value; \
- return sizeof(*attr); \
-}
-
-#define wlp_pset(type, type_code, name) \
-static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value) \
-{ \
- wlp_set_attr_hdr(&attr->hdr, type_code, \
- sizeof(*attr) - sizeof(struct wlp_attr_hdr)); \
- attr->name = *value; \
- return sizeof(*attr); \
-}
-
-/**
- * Populate fields of a variable attribute
- *
- * @returns: total size of attribute including size of new value
- *
- * Provided with a pointer to the memory area reserved for the
- * attribute structure, the field is populated with the value. The
- * reserved memory has to contain enough space for the value.
- */
-#define wlp_vset(type, type_code, name) \
-static size_t wlp_set_##name(struct wlp_attr_##name *attr, type value, \
- size_t len) \
-{ \
- wlp_set_attr_hdr(&attr->hdr, type_code, len); \
- memcpy(attr->name, value, len); \
- return sizeof(*attr) + len; \
-}
-
-wlp_vset(char *, WLP_ATTR_DEV_NAME, dev_name)
-wlp_vset(char *, WLP_ATTR_MANUF, manufacturer)
-wlp_set(enum wlp_assoc_type, WLP_ATTR_MSG_TYPE, msg_type)
-wlp_vset(char *, WLP_ATTR_MODEL_NAME, model_name)
-wlp_vset(char *, WLP_ATTR_MODEL_NR, model_nr)
-wlp_vset(char *, WLP_ATTR_SERIAL, serial)
-wlp_vset(char *, WLP_ATTR_WSS_NAME, wss_name)
-wlp_pset(struct wlp_uuid *, WLP_ATTR_UUID_E, uuid_e)
-wlp_pset(struct wlp_uuid *, WLP_ATTR_UUID_R, uuid_r)
-wlp_pset(struct wlp_uuid *, WLP_ATTR_WSSID, wssid)
-wlp_pset(struct wlp_dev_type *, WLP_ATTR_PRI_DEV_TYPE, prim_dev_type)
-/*wlp_pset(struct wlp_dev_type *, WLP_ATTR_SEC_DEV_TYPE, sec_dev_type)*/
-wlp_set(u8, WLP_ATTR_WLP_VER, version)
-wlp_set(enum wlp_assc_error, WLP_ATTR_WLP_ASSC_ERR, wlp_assc_err)
-wlp_set(enum wlp_wss_sel_mthd, WLP_ATTR_WSS_SEL_MTHD, wss_sel_mthd)
-wlp_set(u8, WLP_ATTR_ACC_ENRL, accept_enrl)
-wlp_set(u8, WLP_ATTR_WSS_SEC_STAT, wss_sec_status)
-wlp_pset(struct uwb_mac_addr *, WLP_ATTR_WSS_BCAST, wss_bcast)
-wlp_pset(struct wlp_nonce *, WLP_ATTR_ENRL_NONCE, enonce)
-wlp_pset(struct wlp_nonce *, WLP_ATTR_REG_NONCE, rnonce)
-wlp_set(u8, WLP_ATTR_WSS_TAG, wss_tag)
-wlp_pset(struct uwb_mac_addr *, WLP_ATTR_WSS_VIRT, wss_virt)
-
-/**
- * Fill in the WSS information attributes
- *
- * We currently only support one WSS, and this is assumed in this function
- * that can populate only one WSS information attribute.
- */
-static size_t wlp_set_wss_info(struct wlp_attr_wss_info *attr,
- struct wlp_wss *wss)
-{
- size_t datalen;
- void *ptr = attr->wss_info;
- size_t used = sizeof(*attr);
-
- datalen = sizeof(struct wlp_wss_info) + strlen(wss->name);
- wlp_set_attr_hdr(&attr->hdr, WLP_ATTR_WSS_INFO, datalen);
- used = wlp_set_wssid(ptr, &wss->wssid);
- used += wlp_set_wss_name(ptr + used, wss->name, strlen(wss->name));
- used += wlp_set_accept_enrl(ptr + used, wss->accept_enroll);
- used += wlp_set_wss_sec_status(ptr + used, wss->secure_status);
- used += wlp_set_wss_bcast(ptr + used, &wss->bcast);
- return sizeof(*attr) + used;
-}
-
-/**
- * Verify attribute header
- *
- * @hdr: Pointer to attribute header that will be verified.
- * @type: Expected attribute type.
- * @len: Expected length of attribute value (excluding header).
- *
- * Most attribute values have a known length even when they do have a
- * length field. This knowledge can be used via this function to verify
- * that the length field matches the expected value.
- */
-static int wlp_check_attr_hdr(struct wlp *wlp, struct wlp_attr_hdr *hdr,
- enum wlp_attr_type type, unsigned len)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
-
- if (le16_to_cpu(hdr->type) != type) {
- dev_err(dev, "WLP: unexpected header type. Expected "
- "%u, got %u.\n", type, le16_to_cpu(hdr->type));
- return -EINVAL;
- }
- if (le16_to_cpu(hdr->length) != len) {
- dev_err(dev, "WLP: unexpected length in header. Expected "
- "%u, got %u.\n", len, le16_to_cpu(hdr->length));
- return -EINVAL;
- }
- return 0;
-}
-
-/**
- * Check if header of WSS information attribute valid
- *
- * @returns: length of WSS attributes (value of length attribute field) if
- * valid WSS information attribute found
- * -ENODATA if no WSS information attribute found
- * -EIO other error occured
- *
- * The WSS information attribute is optional. The function will be provided
- * with a pointer to data that could _potentially_ be a WSS information
- * attribute. If a valid WSS information attribute is found it will return
- * 0, if no WSS information attribute is found it will return -ENODATA, and
- * another error will be returned if it is a WSS information attribute, but
- * some parsing failure occured.
- */
-static int wlp_check_wss_info_attr_hdr(struct wlp *wlp,
- struct wlp_attr_hdr *hdr, size_t buflen)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- size_t len;
- int result = 0;
-
- if (buflen < sizeof(*hdr)) {
- dev_err(dev, "WLP: Not enough space in buffer to parse"
- " WSS information attribute header.\n");
- result = -EIO;
- goto out;
- }
- if (le16_to_cpu(hdr->type) != WLP_ATTR_WSS_INFO) {
- /* WSS information is optional */
- result = -ENODATA;
- goto out;
- }
- len = le16_to_cpu(hdr->length);
- if (buflen < sizeof(*hdr) + len) {
- dev_err(dev, "WLP: Not enough space in buffer to parse "
- "variable data. Got %d, expected %d.\n",
- (int)buflen, (int)(sizeof(*hdr) + len));
- result = -EIO;
- goto out;
- }
- result = len;
-out:
- return result;
-}
-
-
-static ssize_t wlp_get_attribute(struct wlp *wlp, u16 type_code,
- struct wlp_attr_hdr *attr_hdr, void *value, ssize_t value_len,
- ssize_t buflen)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- ssize_t attr_len = sizeof(*attr_hdr) + value_len;
- if (buflen < 0)
- return -EINVAL;
- if (buflen < attr_len) {
- dev_err(dev, "WLP: Not enough space in buffer to parse"
- " attribute field. Need %d, received %zu\n",
- (int)attr_len, buflen);
- return -EIO;
- }
- if (wlp_check_attr_hdr(wlp, attr_hdr, type_code, value_len) < 0) {
- dev_err(dev, "WLP: Header verification failed. \n");
- return -EINVAL;
- }
- memcpy(value, (void *)attr_hdr + sizeof(*attr_hdr), value_len);
- return attr_len;
-}
-
-static ssize_t wlp_vget_attribute(struct wlp *wlp, u16 type_code,
- struct wlp_attr_hdr *attr_hdr, void *value, ssize_t max_value_len,
- ssize_t buflen)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- size_t len;
- if (buflen < 0)
- return -EINVAL;
- if (buflen < sizeof(*attr_hdr)) {
- dev_err(dev, "WLP: Not enough space in buffer to parse"
- " header.\n");
- return -EIO;
- }
- if (le16_to_cpu(attr_hdr->type) != type_code) {
- dev_err(dev, "WLP: Unexpected attribute type. Got %u, "
- "expected %u.\n", le16_to_cpu(attr_hdr->type),
- type_code);
- return -EINVAL;
- }
- len = le16_to_cpu(attr_hdr->length);
- if (len > max_value_len) {
- dev_err(dev, "WLP: Attribute larger than maximum "
- "allowed. Received %zu, max is %d.\n", len,
- (int)max_value_len);
- return -EFBIG;
- }
- if (buflen < sizeof(*attr_hdr) + len) {
- dev_err(dev, "WLP: Not enough space in buffer to parse "
- "variable data.\n");
- return -EIO;
- }
- memcpy(value, (void *)attr_hdr + sizeof(*attr_hdr), len);
- return sizeof(*attr_hdr) + len;
-}
-
-/**
- * Get value of attribute from fixed size attribute field.
- *
- * @attr: Pointer to attribute field.
- * @value: Pointer to variable in which attribute value will be placed.
- * @buflen: Size of buffer in which attribute field (including header)
- * can be found.
- * @returns: Amount of given buffer consumed by parsing for this attribute.
- *
- * The size and type of the value is known by the type of the attribute.
- */
-#define wlp_get(type, type_code, name) \
-ssize_t wlp_get_##name(struct wlp *wlp, struct wlp_attr_##name *attr, \
- type *value, ssize_t buflen) \
-{ \
- return wlp_get_attribute(wlp, (type_code), &attr->hdr, \
- value, sizeof(*value), buflen); \
-}
-
-#define wlp_get_sparse(type, type_code, name) \
- static wlp_get(type, type_code, name)
-
-/**
- * Get value of attribute from variable sized attribute field.
- *
- * @max: The maximum size of this attribute. This value is dictated by
- * the maximum value from the WLP specification.
- *
- * @attr: Pointer to attribute field.
- * @value: Pointer to variable that will contain the value. The memory
- * must already have been allocated for this value.
- * @buflen: Size of buffer in which attribute field (including header)
- * can be found.
- * @returns: Amount of given bufferconsumed by parsing for this attribute.
- */
-#define wlp_vget(type_val, type_code, name, max) \
-static ssize_t wlp_get_##name(struct wlp *wlp, \
- struct wlp_attr_##name *attr, \
- type_val *value, ssize_t buflen) \
-{ \
- return wlp_vget_attribute(wlp, (type_code), &attr->hdr, \
- value, (max), buflen); \
-}
-
-wlp_get(u8, WLP_ATTR_WLP_VER, version)
-wlp_get_sparse(enum wlp_wss_sel_mthd, WLP_ATTR_WSS_SEL_MTHD, wss_sel_mthd)
-wlp_get_sparse(struct wlp_dev_type, WLP_ATTR_PRI_DEV_TYPE, prim_dev_type)
-wlp_get_sparse(enum wlp_assc_error, WLP_ATTR_WLP_ASSC_ERR, wlp_assc_err)
-wlp_get_sparse(struct wlp_uuid, WLP_ATTR_UUID_E, uuid_e)
-wlp_get_sparse(struct wlp_uuid, WLP_ATTR_UUID_R, uuid_r)
-wlp_get(struct wlp_uuid, WLP_ATTR_WSSID, wssid)
-wlp_get_sparse(u8, WLP_ATTR_ACC_ENRL, accept_enrl)
-wlp_get_sparse(u8, WLP_ATTR_WSS_SEC_STAT, wss_sec_status)
-wlp_get_sparse(struct uwb_mac_addr, WLP_ATTR_WSS_BCAST, wss_bcast)
-wlp_get_sparse(u8, WLP_ATTR_WSS_TAG, wss_tag)
-wlp_get_sparse(struct uwb_mac_addr, WLP_ATTR_WSS_VIRT, wss_virt)
-wlp_get_sparse(struct wlp_nonce, WLP_ATTR_ENRL_NONCE, enonce)
-wlp_get_sparse(struct wlp_nonce, WLP_ATTR_REG_NONCE, rnonce)
-
-/* The buffers for the device info attributes can be found in the
- * wlp_device_info struct. These buffers contain one byte more than the
- * max allowed by the spec - this is done to be able to add the
- * terminating \0 for user display. This terminating byte is not required
- * in the actual attribute field (because it has a length field) so the
- * maximum allowed for this value is one less than its size in the
- * structure.
- */
-wlp_vget(char, WLP_ATTR_WSS_NAME, wss_name,
- FIELD_SIZEOF(struct wlp_wss, name) - 1)
-wlp_vget(char, WLP_ATTR_DEV_NAME, dev_name,
- FIELD_SIZEOF(struct wlp_device_info, name) - 1)
-wlp_vget(char, WLP_ATTR_MANUF, manufacturer,
- FIELD_SIZEOF(struct wlp_device_info, manufacturer) - 1)
-wlp_vget(char, WLP_ATTR_MODEL_NAME, model_name,
- FIELD_SIZEOF(struct wlp_device_info, model_name) - 1)
-wlp_vget(char, WLP_ATTR_MODEL_NR, model_nr,
- FIELD_SIZEOF(struct wlp_device_info, model_nr) - 1)
-wlp_vget(char, WLP_ATTR_SERIAL, serial,
- FIELD_SIZEOF(struct wlp_device_info, serial) - 1)
-
-/**
- * Retrieve WSS Name, Accept enroll, Secure status, Broadcast from WSS info
- *
- * @attr: pointer to WSS name attribute in WSS information attribute field
- * @info: structure that will be populated with data from WSS information
- * field (WSS name, Accept enroll, secure status, broadcast address)
- * @buflen: size of buffer
- *
- * Although the WSSID attribute forms part of the WSS info attribute it is
- * retrieved separately and stored in a different location.
- */
-static ssize_t wlp_get_wss_info_attrs(struct wlp *wlp,
- struct wlp_attr_hdr *attr,
- struct wlp_wss_tmp_info *info,
- ssize_t buflen)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- void *ptr = attr;
- size_t used = 0;
- ssize_t result = -EINVAL;
-
- result = wlp_get_wss_name(wlp, ptr, info->name, buflen);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WSS name from "
- "WSS info in D2 message.\n");
- goto error_parse;
- }
- used += result;
-
- result = wlp_get_accept_enrl(wlp, ptr + used, &info->accept_enroll,
- buflen - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain accepting "
- "enrollment from WSS info in D2 message.\n");
- goto error_parse;
- }
- if (info->accept_enroll != 0 && info->accept_enroll != 1) {
- dev_err(dev, "WLP: invalid value for accepting "
- "enrollment in D2 message.\n");
- result = -EINVAL;
- goto error_parse;
- }
- used += result;
-
- result = wlp_get_wss_sec_status(wlp, ptr + used, &info->sec_status,
- buflen - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain secure "
- "status from WSS info in D2 message.\n");
- goto error_parse;
- }
- if (info->sec_status != 0 && info->sec_status != 1) {
- dev_err(dev, "WLP: invalid value for secure "
- "status in D2 message.\n");
- result = -EINVAL;
- goto error_parse;
- }
- used += result;
-
- result = wlp_get_wss_bcast(wlp, ptr + used, &info->bcast,
- buflen - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain broadcast "
- "address from WSS info in D2 message.\n");
- goto error_parse;
- }
- used += result;
- result = used;
-error_parse:
- return result;
-}
-
-/**
- * Create a new WSSID entry for the neighbor, allocate temporary storage
- *
- * Each neighbor can have many WSS active. We maintain a list of WSSIDs
- * advertised by neighbor. During discovery we also cache information about
- * these WSS in temporary storage.
- *
- * The temporary storage will be removed after it has been used (eg.
- * displayed to user), the wssid element will be removed from the list when
- * the neighbor is rediscovered or when it disappears.
- */
-static struct wlp_wssid_e *wlp_create_wssid_e(struct wlp *wlp,
- struct wlp_neighbor_e *neighbor)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct wlp_wssid_e *wssid_e;
-
- wssid_e = kzalloc(sizeof(*wssid_e), GFP_KERNEL);
- if (wssid_e == NULL) {
- dev_err(dev, "WLP: unable to allocate memory "
- "for WSS information.\n");
- goto error_alloc;
- }
- wssid_e->info = kzalloc(sizeof(struct wlp_wss_tmp_info), GFP_KERNEL);
- if (wssid_e->info == NULL) {
- dev_err(dev, "WLP: unable to allocate memory "
- "for temporary WSS information.\n");
- kfree(wssid_e);
- wssid_e = NULL;
- goto error_alloc;
- }
- list_add(&wssid_e->node, &neighbor->wssid);
-error_alloc:
- return wssid_e;
-}
-
-/**
- * Parse WSS information attribute
- *
- * @attr: pointer to WSS information attribute header
- * @buflen: size of buffer in which WSS information attribute appears
- * @wssid: will place wssid from WSS info attribute in this location
- * @wss_info: will place other information from WSS information attribute
- * in this location
- *
- * memory for @wssid and @wss_info must be allocated when calling this
- */
-static ssize_t wlp_get_wss_info(struct wlp *wlp, struct wlp_attr_wss_info *attr,
- size_t buflen, struct wlp_uuid *wssid,
- struct wlp_wss_tmp_info *wss_info)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- ssize_t result;
- size_t len;
- size_t used = 0;
- void *ptr;
-
- result = wlp_check_wss_info_attr_hdr(wlp, (struct wlp_attr_hdr *)attr,
- buflen);
- if (result < 0)
- goto out;
- len = result;
- used = sizeof(*attr);
- ptr = attr;
-
- result = wlp_get_wssid(wlp, ptr + used, wssid, buflen - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WSSID from WSS info.\n");
- goto out;
- }
- used += result;
- result = wlp_get_wss_info_attrs(wlp, ptr + used, wss_info,
- buflen - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WSS information "
- "from WSS information attributes. \n");
- goto out;
- }
- used += result;
- if (len + sizeof(*attr) != used) {
- dev_err(dev, "WLP: Amount of data parsed does not "
- "match length field. Parsed %zu, length "
- "field %zu. \n", used, len);
- result = -EINVAL;
- goto out;
- }
- result = used;
-out:
- return result;
-}
-
-/**
- * Retrieve WSS info from association frame
- *
- * @attr: pointer to WSS information attribute
- * @neighbor: ptr to neighbor being discovered, NULL if enrollment in
- * progress
- * @wss: ptr to WSS being enrolled in, NULL if discovery in progress
- * @buflen: size of buffer in which WSS information appears
- *
- * The WSS information attribute appears in the D2 association message.
- * This message is used in two ways: to discover all neighbors or to enroll
- * into a WSS activated by a neighbor. During discovery we only want to
- * store the WSS info in a cache, to be deleted right after it has been
- * used (eg. displayed to the user). During enrollment we store the WSS
- * information for the lifetime of enrollment.
- *
- * During discovery we are interested in all WSS information, during
- * enrollment we are only interested in the WSS being enrolled in. Even so,
- * when in enrollment we keep parsing the message after finding the WSS of
- * interest, this simplifies the calling routine in that it can be sure
- * that all WSS information attributes have been parsed out of the message.
- *
- * Association frame is process with nbmutex held. The list access is safe.
- */
-static ssize_t wlp_get_all_wss_info(struct wlp *wlp,
- struct wlp_attr_wss_info *attr,
- struct wlp_neighbor_e *neighbor,
- struct wlp_wss *wss, ssize_t buflen)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- size_t used = 0;
- ssize_t result = -EINVAL;
- struct wlp_attr_wss_info *cur;
- struct wlp_uuid wssid;
- struct wlp_wss_tmp_info wss_info;
- unsigned enroll; /* 0 - discovery to cache, 1 - enrollment */
- struct wlp_wssid_e *wssid_e;
- char buf[WLP_WSS_UUID_STRSIZE];
-
- if (buflen < 0)
- goto out;
-
- if (neighbor != NULL && wss == NULL)
- enroll = 0; /* discovery */
- else if (wss != NULL && neighbor == NULL)
- enroll = 1; /* enrollment */
- else
- goto out;
-
- cur = attr;
- while (buflen - used > 0) {
- memset(&wss_info, 0, sizeof(wss_info));
- cur = (void *)cur + used;
- result = wlp_get_wss_info(wlp, cur, buflen - used, &wssid,
- &wss_info);
- if (result == -ENODATA) {
- result = used;
- goto out;
- } else if (result < 0) {
- dev_err(dev, "WLP: Unable to parse WSS information "
- "from WSS information attribute. \n");
- result = -EINVAL;
- goto error_parse;
- }
- if (enroll && !memcmp(&wssid, &wss->wssid, sizeof(wssid))) {
- if (wss_info.accept_enroll != 1) {
- dev_err(dev, "WLP: Requested WSS does "
- "not accept enrollment.\n");
- result = -EINVAL;
- goto out;
- }
- memcpy(wss->name, wss_info.name, sizeof(wss->name));
- wss->bcast = wss_info.bcast;
- wss->secure_status = wss_info.sec_status;
- wss->accept_enroll = wss_info.accept_enroll;
- wss->state = WLP_WSS_STATE_PART_ENROLLED;
- wlp_wss_uuid_print(buf, sizeof(buf), &wssid);
- dev_dbg(dev, "WLP: Found WSS %s. Enrolling.\n", buf);
- } else {
- wssid_e = wlp_create_wssid_e(wlp, neighbor);
- if (wssid_e == NULL) {
- dev_err(dev, "WLP: Cannot create new WSSID "
- "entry for neighbor %02x:%02x.\n",
- neighbor->uwb_dev->dev_addr.data[1],
- neighbor->uwb_dev->dev_addr.data[0]);
- result = -ENOMEM;
- goto out;
- }
- wssid_e->wssid = wssid;
- *wssid_e->info = wss_info;
- }
- used += result;
- }
- result = used;
-error_parse:
- if (result < 0 && !enroll) /* this was a discovery */
- wlp_remove_neighbor_tmp_info(neighbor);
-out:
- return result;
-
-}
-
-/**
- * Parse WSS information attributes into cache for discovery
- *
- * @attr: the first WSS information attribute in message
- * @neighbor: the neighbor whose cache will be populated
- * @buflen: size of the input buffer
- */
-static ssize_t wlp_get_wss_info_to_cache(struct wlp *wlp,
- struct wlp_attr_wss_info *attr,
- struct wlp_neighbor_e *neighbor,
- ssize_t buflen)
-{
- return wlp_get_all_wss_info(wlp, attr, neighbor, NULL, buflen);
-}
-
-/**
- * Parse WSS information attributes into WSS struct for enrollment
- *
- * @attr: the first WSS information attribute in message
- * @wss: the WSS that will be enrolled
- * @buflen: size of the input buffer
- */
-static ssize_t wlp_get_wss_info_to_enroll(struct wlp *wlp,
- struct wlp_attr_wss_info *attr,
- struct wlp_wss *wss, ssize_t buflen)
-{
- return wlp_get_all_wss_info(wlp, attr, NULL, wss, buflen);
-}
-
-/**
- * Construct a D1 association frame
- *
- * We use the radio control functions to determine the values of the device
- * properties. These are of variable length and the total space needed is
- * tallied first before we start constructing the message. The radio
- * control functions return strings that are terminated with \0. This
- * character should not be included in the message (there is a length field
- * accompanying it in the attribute).
- */
-static int wlp_build_assoc_d1(struct wlp *wlp, struct wlp_wss *wss,
- struct sk_buff **skb)
-{
-
- struct device *dev = &wlp->rc->uwb_dev.dev;
- int result = 0;
- struct wlp_device_info *info;
- size_t used = 0;
- struct wlp_frame_assoc *_d1;
- struct sk_buff *_skb;
- void *d1_itr;
-
- if (wlp->dev_info == NULL) {
- result = __wlp_setup_device_info(wlp);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to setup device "
- "information for D1 message.\n");
- goto error;
- }
- }
- info = wlp->dev_info;
- _skb = dev_alloc_skb(sizeof(*_d1)
- + sizeof(struct wlp_attr_uuid_e)
- + sizeof(struct wlp_attr_wss_sel_mthd)
- + sizeof(struct wlp_attr_dev_name)
- + strlen(info->name)
- + sizeof(struct wlp_attr_manufacturer)
- + strlen(info->manufacturer)
- + sizeof(struct wlp_attr_model_name)
- + strlen(info->model_name)
- + sizeof(struct wlp_attr_model_nr)
- + strlen(info->model_nr)
- + sizeof(struct wlp_attr_serial)
- + strlen(info->serial)
- + sizeof(struct wlp_attr_prim_dev_type)
- + sizeof(struct wlp_attr_wlp_assc_err));
- if (_skb == NULL) {
- dev_err(dev, "WLP: Cannot allocate memory for association "
- "message.\n");
- result = -ENOMEM;
- goto error;
- }
- _d1 = (void *) _skb->data;
- _d1->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
- _d1->hdr.type = WLP_FRAME_ASSOCIATION;
- _d1->type = WLP_ASSOC_D1;
-
- wlp_set_version(&_d1->version, WLP_VERSION);
- wlp_set_msg_type(&_d1->msg_type, WLP_ASSOC_D1);
- d1_itr = _d1->attr;
- used = wlp_set_uuid_e(d1_itr, &wlp->uuid);
- used += wlp_set_wss_sel_mthd(d1_itr + used, WLP_WSS_REG_SELECT);
- used += wlp_set_dev_name(d1_itr + used, info->name,
- strlen(info->name));
- used += wlp_set_manufacturer(d1_itr + used, info->manufacturer,
- strlen(info->manufacturer));
- used += wlp_set_model_name(d1_itr + used, info->model_name,
- strlen(info->model_name));
- used += wlp_set_model_nr(d1_itr + used, info->model_nr,
- strlen(info->model_nr));
- used += wlp_set_serial(d1_itr + used, info->serial,
- strlen(info->serial));
- used += wlp_set_prim_dev_type(d1_itr + used, &info->prim_dev_type);
- used += wlp_set_wlp_assc_err(d1_itr + used, WLP_ASSOC_ERROR_NONE);
- skb_put(_skb, sizeof(*_d1) + used);
- *skb = _skb;
-error:
- return result;
-}
-
-/**
- * Construct a D2 association frame
- *
- * We use the radio control functions to determine the values of the device
- * properties. These are of variable length and the total space needed is
- * tallied first before we start constructing the message. The radio
- * control functions return strings that are terminated with \0. This
- * character should not be included in the message (there is a length field
- * accompanying it in the attribute).
- */
-static
-int wlp_build_assoc_d2(struct wlp *wlp, struct wlp_wss *wss,
- struct sk_buff **skb, struct wlp_uuid *uuid_e)
-{
-
- struct device *dev = &wlp->rc->uwb_dev.dev;
- int result = 0;
- struct wlp_device_info *info;
- size_t used = 0;
- struct wlp_frame_assoc *_d2;
- struct sk_buff *_skb;
- void *d2_itr;
- size_t mem_needed;
-
- if (wlp->dev_info == NULL) {
- result = __wlp_setup_device_info(wlp);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to setup device "
- "information for D2 message.\n");
- goto error;
- }
- }
- info = wlp->dev_info;
- mem_needed = sizeof(*_d2)
- + sizeof(struct wlp_attr_uuid_e)
- + sizeof(struct wlp_attr_uuid_r)
- + sizeof(struct wlp_attr_dev_name)
- + strlen(info->name)
- + sizeof(struct wlp_attr_manufacturer)
- + strlen(info->manufacturer)
- + sizeof(struct wlp_attr_model_name)
- + strlen(info->model_name)
- + sizeof(struct wlp_attr_model_nr)
- + strlen(info->model_nr)
- + sizeof(struct wlp_attr_serial)
- + strlen(info->serial)
- + sizeof(struct wlp_attr_prim_dev_type)
- + sizeof(struct wlp_attr_wlp_assc_err);
- if (wlp->wss.state >= WLP_WSS_STATE_ACTIVE)
- mem_needed += sizeof(struct wlp_attr_wss_info)
- + sizeof(struct wlp_wss_info)
- + strlen(wlp->wss.name);
- _skb = dev_alloc_skb(mem_needed);
- if (_skb == NULL) {
- dev_err(dev, "WLP: Cannot allocate memory for association "
- "message.\n");
- result = -ENOMEM;
- goto error;
- }
- _d2 = (void *) _skb->data;
- _d2->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
- _d2->hdr.type = WLP_FRAME_ASSOCIATION;
- _d2->type = WLP_ASSOC_D2;
-
- wlp_set_version(&_d2->version, WLP_VERSION);
- wlp_set_msg_type(&_d2->msg_type, WLP_ASSOC_D2);
- d2_itr = _d2->attr;
- used = wlp_set_uuid_e(d2_itr, uuid_e);
- used += wlp_set_uuid_r(d2_itr + used, &wlp->uuid);
- if (wlp->wss.state >= WLP_WSS_STATE_ACTIVE)
- used += wlp_set_wss_info(d2_itr + used, &wlp->wss);
- used += wlp_set_dev_name(d2_itr + used, info->name,
- strlen(info->name));
- used += wlp_set_manufacturer(d2_itr + used, info->manufacturer,
- strlen(info->manufacturer));
- used += wlp_set_model_name(d2_itr + used, info->model_name,
- strlen(info->model_name));
- used += wlp_set_model_nr(d2_itr + used, info->model_nr,
- strlen(info->model_nr));
- used += wlp_set_serial(d2_itr + used, info->serial,
- strlen(info->serial));
- used += wlp_set_prim_dev_type(d2_itr + used, &info->prim_dev_type);
- used += wlp_set_wlp_assc_err(d2_itr + used, WLP_ASSOC_ERROR_NONE);
- skb_put(_skb, sizeof(*_d2) + used);
- *skb = _skb;
-error:
- return result;
-}
-
-/**
- * Allocate memory for and populate fields of F0 association frame
- *
- * Currently (while focusing on unsecure enrollment) we ignore the
- * nonce's that could be placed in the message. Only the error field is
- * populated by the value provided by the caller.
- */
-static
-int wlp_build_assoc_f0(struct wlp *wlp, struct sk_buff **skb,
- enum wlp_assc_error error)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- int result = -ENOMEM;
- struct {
- struct wlp_frame_assoc f0_hdr;
- struct wlp_attr_enonce enonce;
- struct wlp_attr_rnonce rnonce;
- struct wlp_attr_wlp_assc_err assc_err;
- } *f0;
- struct sk_buff *_skb;
- struct wlp_nonce tmp;
-
- _skb = dev_alloc_skb(sizeof(*f0));
- if (_skb == NULL) {
- dev_err(dev, "WLP: Unable to allocate memory for F0 "
- "association frame. \n");
- goto error_alloc;
- }
- f0 = (void *) _skb->data;
- f0->f0_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
- f0->f0_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
- f0->f0_hdr.type = WLP_ASSOC_F0;
- wlp_set_version(&f0->f0_hdr.version, WLP_VERSION);
- wlp_set_msg_type(&f0->f0_hdr.msg_type, WLP_ASSOC_F0);
- memset(&tmp, 0, sizeof(tmp));
- wlp_set_enonce(&f0->enonce, &tmp);
- wlp_set_rnonce(&f0->rnonce, &tmp);
- wlp_set_wlp_assc_err(&f0->assc_err, error);
- skb_put(_skb, sizeof(*f0));
- *skb = _skb;
- result = 0;
-error_alloc:
- return result;
-}
-
-/**
- * Parse F0 frame
- *
- * We just retrieve the values and print it as an error to the user.
- * Calling function already knows an error occured (F0 indicates error), so
- * we just parse the content as debug for higher layers.
- */
-int wlp_parse_f0(struct wlp *wlp, struct sk_buff *skb)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct wlp_frame_assoc *f0 = (void *) skb->data;
- void *ptr = skb->data;
- size_t len = skb->len;
- size_t used;
- ssize_t result;
- struct wlp_nonce enonce, rnonce;
- enum wlp_assc_error assc_err;
- char enonce_buf[WLP_WSS_NONCE_STRSIZE];
- char rnonce_buf[WLP_WSS_NONCE_STRSIZE];
-
- used = sizeof(*f0);
- result = wlp_get_enonce(wlp, ptr + used, &enonce, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain Enrollee nonce "
- "attribute from F0 message.\n");
- goto error_parse;
- }
- used += result;
- result = wlp_get_rnonce(wlp, ptr + used, &rnonce, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain Registrar nonce "
- "attribute from F0 message.\n");
- goto error_parse;
- }
- used += result;
- result = wlp_get_wlp_assc_err(wlp, ptr + used, &assc_err, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WLP Association error "
- "attribute from F0 message.\n");
- goto error_parse;
- }
- wlp_wss_nonce_print(enonce_buf, sizeof(enonce_buf), &enonce);
- wlp_wss_nonce_print(rnonce_buf, sizeof(rnonce_buf), &rnonce);
- dev_err(dev, "WLP: Received F0 error frame from neighbor. Enrollee "
- "nonce: %s, Registrar nonce: %s, WLP Association error: %s.\n",
- enonce_buf, rnonce_buf, wlp_assc_error_str(assc_err));
- result = 0;
-error_parse:
- return result;
-}
-
-/**
- * Retrieve variable device information from association message
- *
- * The device information parsed is not required in any message. This
- * routine will thus not fail if an attribute is not present.
- * The attributes are expected in a certain order, even if all are not
- * present. The "attribute type" value is used to ensure the attributes
- * are parsed in the correct order.
- *
- * If an error is encountered during parsing the function will return an
- * error code, when this happens the given device_info structure may be
- * partially filled.
- */
-static
-int wlp_get_variable_info(struct wlp *wlp, void *data,
- struct wlp_device_info *dev_info, ssize_t len)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- size_t used = 0;
- struct wlp_attr_hdr *hdr;
- ssize_t result = 0;
- unsigned last = 0;
-
- while (len - used > 0) {
- if (len - used < sizeof(*hdr)) {
- dev_err(dev, "WLP: Partial data in frame, cannot "
- "parse. \n");
- goto error_parse;
- }
- hdr = data + used;
- switch (le16_to_cpu(hdr->type)) {
- case WLP_ATTR_MANUF:
- if (last >= WLP_ATTR_MANUF) {
- dev_err(dev, "WLP: Incorrect order of "
- "attribute values in D1 msg.\n");
- goto error_parse;
- }
- result = wlp_get_manufacturer(wlp, data + used,
- dev_info->manufacturer,
- len - used);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to obtain "
- "Manufacturer attribute from D1 "
- "message.\n");
- goto error_parse;
- }
- last = WLP_ATTR_MANUF;
- used += result;
- break;
- case WLP_ATTR_MODEL_NAME:
- if (last >= WLP_ATTR_MODEL_NAME) {
- dev_err(dev, "WLP: Incorrect order of "
- "attribute values in D1 msg.\n");
- goto error_parse;
- }
- result = wlp_get_model_name(wlp, data + used,
- dev_info->model_name,
- len - used);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to obtain Model "
- "name attribute from D1 message.\n");
- goto error_parse;
- }
- last = WLP_ATTR_MODEL_NAME;
- used += result;
- break;
- case WLP_ATTR_MODEL_NR:
- if (last >= WLP_ATTR_MODEL_NR) {
- dev_err(dev, "WLP: Incorrect order of "
- "attribute values in D1 msg.\n");
- goto error_parse;
- }
- result = wlp_get_model_nr(wlp, data + used,
- dev_info->model_nr,
- len - used);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to obtain Model "
- "number attribute from D1 message.\n");
- goto error_parse;
- }
- last = WLP_ATTR_MODEL_NR;
- used += result;
- break;
- case WLP_ATTR_SERIAL:
- if (last >= WLP_ATTR_SERIAL) {
- dev_err(dev, "WLP: Incorrect order of "
- "attribute values in D1 msg.\n");
- goto error_parse;
- }
- result = wlp_get_serial(wlp, data + used,
- dev_info->serial, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to obtain Serial "
- "number attribute from D1 message.\n");
- goto error_parse;
- }
- last = WLP_ATTR_SERIAL;
- used += result;
- break;
- case WLP_ATTR_PRI_DEV_TYPE:
- if (last >= WLP_ATTR_PRI_DEV_TYPE) {
- dev_err(dev, "WLP: Incorrect order of "
- "attribute values in D1 msg.\n");
- goto error_parse;
- }
- result = wlp_get_prim_dev_type(wlp, data + used,
- &dev_info->prim_dev_type,
- len - used);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to obtain Primary "
- "device type attribute from D1 "
- "message.\n");
- goto error_parse;
- }
- dev_info->prim_dev_type.category =
- le16_to_cpu(dev_info->prim_dev_type.category);
- dev_info->prim_dev_type.subID =
- le16_to_cpu(dev_info->prim_dev_type.subID);
- last = WLP_ATTR_PRI_DEV_TYPE;
- used += result;
- break;
- default:
- /* This is not variable device information. */
- goto out;
- break;
- }
- }
-out:
- return used;
-error_parse:
- return -EINVAL;
-}
-
-/**
- * Parse incoming D1 frame, populate attribute values
- *
- * Caller provides pointers to memory already allocated for attributes
- * expected in the D1 frame. These variables will be populated.
- */
-static
-int wlp_parse_d1_frame(struct wlp *wlp, struct sk_buff *skb,
- struct wlp_uuid *uuid_e,
- enum wlp_wss_sel_mthd *sel_mthd,
- struct wlp_device_info *dev_info,
- enum wlp_assc_error *assc_err)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct wlp_frame_assoc *d1 = (void *) skb->data;
- void *ptr = skb->data;
- size_t len = skb->len;
- size_t used;
- ssize_t result;
-
- used = sizeof(*d1);
- result = wlp_get_uuid_e(wlp, ptr + used, uuid_e, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain UUID-E attribute from D1 "
- "message.\n");
- goto error_parse;
- }
- used += result;
- result = wlp_get_wss_sel_mthd(wlp, ptr + used, sel_mthd, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WSS selection method "
- "from D1 message.\n");
- goto error_parse;
- }
- used += result;
- result = wlp_get_dev_name(wlp, ptr + used, dev_info->name,
- len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain Device Name from D1 "
- "message.\n");
- goto error_parse;
- }
- used += result;
- result = wlp_get_variable_info(wlp, ptr + used, dev_info, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain Device Information from "
- "D1 message.\n");
- goto error_parse;
- }
- used += result;
- result = wlp_get_wlp_assc_err(wlp, ptr + used, assc_err, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WLP Association Error "
- "Information from D1 message.\n");
- goto error_parse;
- }
- result = 0;
-error_parse:
- return result;
-}
-/**
- * Handle incoming D1 frame
- *
- * The frame has already been verified to contain an Association header with
- * the correct version number. Parse the incoming frame, construct and send
- * a D2 frame in response.
- *
- * It is not clear what to do with most fields in the incoming D1 frame. We
- * retrieve and discard the information here for now.
- */
-void wlp_handle_d1_frame(struct work_struct *ws)
-{
- struct wlp_assoc_frame_ctx *frame_ctx = container_of(ws,
- struct wlp_assoc_frame_ctx,
- ws);
- struct wlp *wlp = frame_ctx->wlp;
- struct wlp_wss *wss = &wlp->wss;
- struct sk_buff *skb = frame_ctx->skb;
- struct uwb_dev_addr *src = &frame_ctx->src;
- int result;
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct wlp_uuid uuid_e;
- enum wlp_wss_sel_mthd sel_mthd = 0;
- struct wlp_device_info dev_info;
- enum wlp_assc_error assc_err;
- struct sk_buff *resp = NULL;
-
- /* Parse D1 frame */
- mutex_lock(&wss->mutex);
- mutex_lock(&wlp->mutex); /* to access wlp->uuid */
- memset(&dev_info, 0, sizeof(dev_info));
- result = wlp_parse_d1_frame(wlp, skb, &uuid_e, &sel_mthd, &dev_info,
- &assc_err);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to parse incoming D1 frame.\n");
- kfree_skb(skb);
- goto out;
- }
-
- kfree_skb(skb);
- if (!wlp_uuid_is_set(&wlp->uuid)) {
- dev_err(dev, "WLP: UUID is not set. Set via sysfs to "
- "proceed. Respong to D1 message with error F0.\n");
- result = wlp_build_assoc_f0(wlp, &resp,
- WLP_ASSOC_ERROR_NOT_READY);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to construct F0 message.\n");
- goto out;
- }
- } else {
- /* Construct D2 frame */
- result = wlp_build_assoc_d2(wlp, wss, &resp, &uuid_e);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to construct D2 message.\n");
- goto out;
- }
- }
- /* Send D2 frame */
- BUG_ON(wlp->xmit_frame == NULL);
- result = wlp->xmit_frame(wlp, resp, src);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to transmit D2 association "
- "message: %d\n", result);
- if (result == -ENXIO)
- dev_err(dev, "WLP: Is network interface up? \n");
- /* We could try again ... */
- dev_kfree_skb_any(resp); /* we need to free if tx fails */
- }
-out:
- kfree(frame_ctx);
- mutex_unlock(&wlp->mutex);
- mutex_unlock(&wss->mutex);
-}
-
-/**
- * Parse incoming D2 frame, create and populate temporary cache
- *
- * @skb: socket buffer in which D2 frame can be found
- * @neighbor: the neighbor that sent the D2 frame
- *
- * Will allocate memory for temporary storage of information learned during
- * discovery.
- */
-int wlp_parse_d2_frame_to_cache(struct wlp *wlp, struct sk_buff *skb,
- struct wlp_neighbor_e *neighbor)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct wlp_frame_assoc *d2 = (void *) skb->data;
- void *ptr = skb->data;
- size_t len = skb->len;
- size_t used;
- ssize_t result;
- struct wlp_uuid uuid_e;
- struct wlp_device_info *nb_info;
- enum wlp_assc_error assc_err;
-
- used = sizeof(*d2);
- result = wlp_get_uuid_e(wlp, ptr + used, &uuid_e, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain UUID-E attribute from D2 "
- "message.\n");
- goto error_parse;
- }
- if (memcmp(&uuid_e, &wlp->uuid, sizeof(uuid_e))) {
- dev_err(dev, "WLP: UUID-E in incoming D2 does not match "
- "local UUID sent in D1. \n");
- goto error_parse;
- }
- used += result;
- result = wlp_get_uuid_r(wlp, ptr + used, &neighbor->uuid, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain UUID-R attribute from D2 "
- "message.\n");
- goto error_parse;
- }
- used += result;
- result = wlp_get_wss_info_to_cache(wlp, ptr + used, neighbor,
- len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WSS information "
- "from D2 message.\n");
- goto error_parse;
- }
- used += result;
- neighbor->info = kzalloc(sizeof(struct wlp_device_info), GFP_KERNEL);
- if (neighbor->info == NULL) {
- dev_err(dev, "WLP: cannot allocate memory to store device "
- "info.\n");
- result = -ENOMEM;
- goto error_parse;
- }
- nb_info = neighbor->info;
- result = wlp_get_dev_name(wlp, ptr + used, nb_info->name,
- len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain Device Name from D2 "
- "message.\n");
- goto error_parse;
- }
- used += result;
- result = wlp_get_variable_info(wlp, ptr + used, nb_info, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain Device Information from "
- "D2 message.\n");
- goto error_parse;
- }
- used += result;
- result = wlp_get_wlp_assc_err(wlp, ptr + used, &assc_err, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WLP Association Error "
- "Information from D2 message.\n");
- goto error_parse;
- }
- if (assc_err != WLP_ASSOC_ERROR_NONE) {
- dev_err(dev, "WLP: neighbor device returned association "
- "error %d\n", assc_err);
- result = -EINVAL;
- goto error_parse;
- }
- result = 0;
-error_parse:
- if (result < 0)
- wlp_remove_neighbor_tmp_info(neighbor);
- return result;
-}
-
-/**
- * Parse incoming D2 frame, populate attribute values of WSS bein enrolled in
- *
- * @wss: our WSS that will be enrolled
- * @skb: socket buffer in which D2 frame can be found
- * @neighbor: the neighbor that sent the D2 frame
- * @wssid: the wssid of the WSS in which we want to enroll
- *
- * Forms part of enrollment sequence. We are trying to enroll in WSS with
- * @wssid by using @neighbor as registrar. A D1 message was sent to
- * @neighbor and now we need to parse the D2 response. The neighbor's
- * response is searched for the requested WSS and if found (and it accepts
- * enrollment), we store the information.
- */
-int wlp_parse_d2_frame_to_enroll(struct wlp_wss *wss, struct sk_buff *skb,
- struct wlp_neighbor_e *neighbor,
- struct wlp_uuid *wssid)
-{
- struct wlp *wlp = container_of(wss, struct wlp, wss);
- struct device *dev = &wlp->rc->uwb_dev.dev;
- void *ptr = skb->data;
- size_t len = skb->len;
- size_t used;
- ssize_t result;
- struct wlp_uuid uuid_e;
- struct wlp_uuid uuid_r;
- struct wlp_device_info nb_info;
- enum wlp_assc_error assc_err;
- char uuid_bufA[WLP_WSS_UUID_STRSIZE];
- char uuid_bufB[WLP_WSS_UUID_STRSIZE];
-
- used = sizeof(struct wlp_frame_assoc);
- result = wlp_get_uuid_e(wlp, ptr + used, &uuid_e, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain UUID-E attribute from D2 "
- "message.\n");
- goto error_parse;
- }
- if (memcmp(&uuid_e, &wlp->uuid, sizeof(uuid_e))) {
- dev_err(dev, "WLP: UUID-E in incoming D2 does not match "
- "local UUID sent in D1. \n");
- goto error_parse;
- }
- used += result;
- result = wlp_get_uuid_r(wlp, ptr + used, &uuid_r, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain UUID-R attribute from D2 "
- "message.\n");
- goto error_parse;
- }
- if (memcmp(&uuid_r, &neighbor->uuid, sizeof(uuid_r))) {
- wlp_wss_uuid_print(uuid_bufA, sizeof(uuid_bufA),
- &neighbor->uuid);
- wlp_wss_uuid_print(uuid_bufB, sizeof(uuid_bufB), &uuid_r);
- dev_err(dev, "WLP: UUID of neighbor does not match UUID "
- "learned during discovery. Originally discovered: %s, "
- "now from D2 message: %s\n", uuid_bufA, uuid_bufB);
- result = -EINVAL;
- goto error_parse;
- }
- used += result;
- wss->wssid = *wssid;
- result = wlp_get_wss_info_to_enroll(wlp, ptr + used, wss, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WSS information "
- "from D2 message.\n");
- goto error_parse;
- }
- if (wss->state != WLP_WSS_STATE_PART_ENROLLED) {
- dev_err(dev, "WLP: D2 message did not contain information "
- "for successful enrollment. \n");
- result = -EINVAL;
- goto error_parse;
- }
- used += result;
- /* Place device information on stack to continue parsing of message */
- result = wlp_get_dev_name(wlp, ptr + used, nb_info.name,
- len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain Device Name from D2 "
- "message.\n");
- goto error_parse;
- }
- used += result;
- result = wlp_get_variable_info(wlp, ptr + used, &nb_info, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain Device Information from "
- "D2 message.\n");
- goto error_parse;
- }
- used += result;
- result = wlp_get_wlp_assc_err(wlp, ptr + used, &assc_err, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WLP Association Error "
- "Information from D2 message.\n");
- goto error_parse;
- }
- if (assc_err != WLP_ASSOC_ERROR_NONE) {
- dev_err(dev, "WLP: neighbor device returned association "
- "error %d\n", assc_err);
- if (wss->state == WLP_WSS_STATE_PART_ENROLLED) {
- dev_err(dev, "WLP: Enrolled in WSS (should not "
- "happen according to spec). Undoing. \n");
- wlp_wss_reset(wss);
- }
- result = -EINVAL;
- goto error_parse;
- }
- result = 0;
-error_parse:
- return result;
-}
-
-/**
- * Parse C3/C4 frame into provided variables
- *
- * @wssid: will point to copy of wssid retrieved from C3/C4 frame
- * @tag: will point to copy of tag retrieved from C3/C4 frame
- * @virt_addr: will point to copy of virtual address retrieved from C3/C4
- * frame.
- *
- * Calling function has to allocate memory for these values.
- *
- * skb contains a valid C3/C4 frame, return the individual fields of this
- * frame in the provided variables.
- */
-int wlp_parse_c3c4_frame(struct wlp *wlp, struct sk_buff *skb,
- struct wlp_uuid *wssid, u8 *tag,
- struct uwb_mac_addr *virt_addr)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- int result;
- void *ptr = skb->data;
- size_t len = skb->len;
- size_t used;
- struct wlp_frame_assoc *assoc = ptr;
-
- used = sizeof(*assoc);
- result = wlp_get_wssid(wlp, ptr + used, wssid, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WSSID attribute from "
- "%s message.\n", wlp_assoc_frame_str(assoc->type));
- goto error_parse;
- }
- used += result;
- result = wlp_get_wss_tag(wlp, ptr + used, tag, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WSS tag attribute from "
- "%s message.\n", wlp_assoc_frame_str(assoc->type));
- goto error_parse;
- }
- used += result;
- result = wlp_get_wss_virt(wlp, ptr + used, virt_addr, len - used);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WSS virtual address "
- "attribute from %s message.\n",
- wlp_assoc_frame_str(assoc->type));
- goto error_parse;
- }
-error_parse:
- return result;
-}
-
-/**
- * Allocate memory for and populate fields of C1 or C2 association frame
- *
- * The C1 and C2 association frames appear identical - except for the type.
- */
-static
-int wlp_build_assoc_c1c2(struct wlp *wlp, struct wlp_wss *wss,
- struct sk_buff **skb, enum wlp_assoc_type type)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- int result = -ENOMEM;
- struct {
- struct wlp_frame_assoc c_hdr;
- struct wlp_attr_wssid wssid;
- } *c;
- struct sk_buff *_skb;
-
- _skb = dev_alloc_skb(sizeof(*c));
- if (_skb == NULL) {
- dev_err(dev, "WLP: Unable to allocate memory for C1/C2 "
- "association frame. \n");
- goto error_alloc;
- }
- c = (void *) _skb->data;
- c->c_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
- c->c_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
- c->c_hdr.type = type;
- wlp_set_version(&c->c_hdr.version, WLP_VERSION);
- wlp_set_msg_type(&c->c_hdr.msg_type, type);
- wlp_set_wssid(&c->wssid, &wss->wssid);
- skb_put(_skb, sizeof(*c));
- *skb = _skb;
- result = 0;
-error_alloc:
- return result;
-}
-
-
-static
-int wlp_build_assoc_c1(struct wlp *wlp, struct wlp_wss *wss,
- struct sk_buff **skb)
-{
- return wlp_build_assoc_c1c2(wlp, wss, skb, WLP_ASSOC_C1);
-}
-
-static
-int wlp_build_assoc_c2(struct wlp *wlp, struct wlp_wss *wss,
- struct sk_buff **skb)
-{
- return wlp_build_assoc_c1c2(wlp, wss, skb, WLP_ASSOC_C2);
-}
-
-
-/**
- * Allocate memory for and populate fields of C3 or C4 association frame
- *
- * The C3 and C4 association frames appear identical - except for the type.
- */
-static
-int wlp_build_assoc_c3c4(struct wlp *wlp, struct wlp_wss *wss,
- struct sk_buff **skb, enum wlp_assoc_type type)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- int result = -ENOMEM;
- struct {
- struct wlp_frame_assoc c_hdr;
- struct wlp_attr_wssid wssid;
- struct wlp_attr_wss_tag wss_tag;
- struct wlp_attr_wss_virt wss_virt;
- } *c;
- struct sk_buff *_skb;
-
- _skb = dev_alloc_skb(sizeof(*c));
- if (_skb == NULL) {
- dev_err(dev, "WLP: Unable to allocate memory for C3/C4 "
- "association frame. \n");
- goto error_alloc;
- }
- c = (void *) _skb->data;
- c->c_hdr.hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
- c->c_hdr.hdr.type = WLP_FRAME_ASSOCIATION;
- c->c_hdr.type = type;
- wlp_set_version(&c->c_hdr.version, WLP_VERSION);
- wlp_set_msg_type(&c->c_hdr.msg_type, type);
- wlp_set_wssid(&c->wssid, &wss->wssid);
- wlp_set_wss_tag(&c->wss_tag, wss->tag);
- wlp_set_wss_virt(&c->wss_virt, &wss->virtual_addr);
- skb_put(_skb, sizeof(*c));
- *skb = _skb;
- result = 0;
-error_alloc:
- return result;
-}
-
-static
-int wlp_build_assoc_c3(struct wlp *wlp, struct wlp_wss *wss,
- struct sk_buff **skb)
-{
- return wlp_build_assoc_c3c4(wlp, wss, skb, WLP_ASSOC_C3);
-}
-
-static
-int wlp_build_assoc_c4(struct wlp *wlp, struct wlp_wss *wss,
- struct sk_buff **skb)
-{
- return wlp_build_assoc_c3c4(wlp, wss, skb, WLP_ASSOC_C4);
-}
-
-
-#define wlp_send_assoc(type, id) \
-static int wlp_send_assoc_##type(struct wlp *wlp, struct wlp_wss *wss, \
- struct uwb_dev_addr *dev_addr) \
-{ \
- struct device *dev = &wlp->rc->uwb_dev.dev; \
- int result; \
- struct sk_buff *skb = NULL; \
- \
- /* Build the frame */ \
- result = wlp_build_assoc_##type(wlp, wss, &skb); \
- if (result < 0) { \
- dev_err(dev, "WLP: Unable to construct %s association " \
- "frame: %d\n", wlp_assoc_frame_str(id), result);\
- goto error_build_assoc; \
- } \
- /* Send the frame */ \
- BUG_ON(wlp->xmit_frame == NULL); \
- result = wlp->xmit_frame(wlp, skb, dev_addr); \
- if (result < 0) { \
- dev_err(dev, "WLP: Unable to transmit %s association " \
- "message: %d\n", wlp_assoc_frame_str(id), \
- result); \
- if (result == -ENXIO) \
- dev_err(dev, "WLP: Is network interface " \
- "up? \n"); \
- goto error_xmit; \
- } \
- return 0; \
-error_xmit: \
- /* We could try again ... */ \
- dev_kfree_skb_any(skb);/*we need to free if tx fails*/ \
-error_build_assoc: \
- return result; \
-}
-
-wlp_send_assoc(d1, WLP_ASSOC_D1)
-wlp_send_assoc(c1, WLP_ASSOC_C1)
-wlp_send_assoc(c3, WLP_ASSOC_C3)
-
-int wlp_send_assoc_frame(struct wlp *wlp, struct wlp_wss *wss,
- struct uwb_dev_addr *dev_addr,
- enum wlp_assoc_type type)
-{
- int result = 0;
- struct device *dev = &wlp->rc->uwb_dev.dev;
- switch (type) {
- case WLP_ASSOC_D1:
- result = wlp_send_assoc_d1(wlp, wss, dev_addr);
- break;
- case WLP_ASSOC_C1:
- result = wlp_send_assoc_c1(wlp, wss, dev_addr);
- break;
- case WLP_ASSOC_C3:
- result = wlp_send_assoc_c3(wlp, wss, dev_addr);
- break;
- default:
- dev_err(dev, "WLP: Received request to send unknown "
- "association message.\n");
- result = -EINVAL;
- break;
- }
- return result;
-}
-
-/**
- * Handle incoming C1 frame
- *
- * The frame has already been verified to contain an Association header with
- * the correct version number. Parse the incoming frame, construct and send
- * a C2 frame in response.
- */
-void wlp_handle_c1_frame(struct work_struct *ws)
-{
- struct wlp_assoc_frame_ctx *frame_ctx = container_of(ws,
- struct wlp_assoc_frame_ctx,
- ws);
- struct wlp *wlp = frame_ctx->wlp;
- struct wlp_wss *wss = &wlp->wss;
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct wlp_frame_assoc *c1 = (void *) frame_ctx->skb->data;
- unsigned int len = frame_ctx->skb->len;
- struct uwb_dev_addr *src = &frame_ctx->src;
- int result;
- struct wlp_uuid wssid;
- struct sk_buff *resp = NULL;
-
- /* Parse C1 frame */
- mutex_lock(&wss->mutex);
- result = wlp_get_wssid(wlp, (void *)c1 + sizeof(*c1), &wssid,
- len - sizeof(*c1));
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WSSID from C1 frame.\n");
- goto out;
- }
- if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))
- && wss->state == WLP_WSS_STATE_ACTIVE) {
- /* Construct C2 frame */
- result = wlp_build_assoc_c2(wlp, wss, &resp);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to construct C2 message.\n");
- goto out;
- }
- } else {
- /* Construct F0 frame */
- result = wlp_build_assoc_f0(wlp, &resp, WLP_ASSOC_ERROR_INV);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to construct F0 message.\n");
- goto out;
- }
- }
- /* Send C2 frame */
- BUG_ON(wlp->xmit_frame == NULL);
- result = wlp->xmit_frame(wlp, resp, src);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to transmit response association "
- "message: %d\n", result);
- if (result == -ENXIO)
- dev_err(dev, "WLP: Is network interface up? \n");
- /* We could try again ... */
- dev_kfree_skb_any(resp); /* we need to free if tx fails */
- }
-out:
- kfree_skb(frame_ctx->skb);
- kfree(frame_ctx);
- mutex_unlock(&wss->mutex);
-}
-
-/**
- * Handle incoming C3 frame
- *
- * The frame has already been verified to contain an Association header with
- * the correct version number. Parse the incoming frame, construct and send
- * a C4 frame in response. If the C3 frame identifies a WSS that is locally
- * active then we connect to this neighbor (add it to our EDA cache).
- */
-void wlp_handle_c3_frame(struct work_struct *ws)
-{
- struct wlp_assoc_frame_ctx *frame_ctx = container_of(ws,
- struct wlp_assoc_frame_ctx,
- ws);
- struct wlp *wlp = frame_ctx->wlp;
- struct wlp_wss *wss = &wlp->wss;
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct sk_buff *skb = frame_ctx->skb;
- struct uwb_dev_addr *src = &frame_ctx->src;
- int result;
- struct sk_buff *resp = NULL;
- struct wlp_uuid wssid;
- u8 tag;
- struct uwb_mac_addr virt_addr;
-
- /* Parse C3 frame */
- mutex_lock(&wss->mutex);
- result = wlp_parse_c3c4_frame(wlp, skb, &wssid, &tag, &virt_addr);
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain values from C3 frame.\n");
- goto out;
- }
- if (!memcmp(&wssid, &wss->wssid, sizeof(wssid))
- && wss->state >= WLP_WSS_STATE_ACTIVE) {
- result = wlp_eda_update_node(&wlp->eda, src, wss,
- (void *) virt_addr.data, tag,
- WLP_WSS_CONNECTED);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to update EDA cache "
- "with new connected neighbor information.\n");
- result = wlp_build_assoc_f0(wlp, &resp,
- WLP_ASSOC_ERROR_INT);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to construct F0 "
- "message.\n");
- goto out;
- }
- } else {
- wss->state = WLP_WSS_STATE_CONNECTED;
- /* Construct C4 frame */
- result = wlp_build_assoc_c4(wlp, wss, &resp);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to construct C4 "
- "message.\n");
- goto out;
- }
- }
- } else {
- /* Construct F0 frame */
- result = wlp_build_assoc_f0(wlp, &resp, WLP_ASSOC_ERROR_INV);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to construct F0 message.\n");
- goto out;
- }
- }
- /* Send C4 frame */
- BUG_ON(wlp->xmit_frame == NULL);
- result = wlp->xmit_frame(wlp, resp, src);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to transmit response association "
- "message: %d\n", result);
- if (result == -ENXIO)
- dev_err(dev, "WLP: Is network interface up? \n");
- /* We could try again ... */
- dev_kfree_skb_any(resp); /* we need to free if tx fails */
- }
-out:
- kfree_skb(frame_ctx->skb);
- kfree(frame_ctx);
- mutex_unlock(&wss->mutex);
-}
-
-
+++ /dev/null
-/*
- * WiMedia Logical Link Control Protocol (WLP)
- * sysfs functions
- *
- * Copyright (C) 2007 Intel Corporation
- * Reinette Chatre <reinette.chatre@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * FIXME: Docs
- *
- */
-#include <linux/wlp.h>
-
-#include "wlp-internal.h"
-
-static
-size_t wlp_wss_wssid_e_print(char *buf, size_t bufsize,
- struct wlp_wssid_e *wssid_e)
-{
- size_t used = 0;
- used += scnprintf(buf, bufsize, " WSS: ");
- used += wlp_wss_uuid_print(buf + used, bufsize - used,
- &wssid_e->wssid);
-
- if (wssid_e->info != NULL) {
- used += scnprintf(buf + used, bufsize - used, " ");
- used += uwb_mac_addr_print(buf + used, bufsize - used,
- &wssid_e->info->bcast);
- used += scnprintf(buf + used, bufsize - used, " %u %u %s\n",
- wssid_e->info->accept_enroll,
- wssid_e->info->sec_status,
- wssid_e->info->name);
- }
- return used;
-}
-
-/**
- * Print out information learned from neighbor discovery
- *
- * Some fields being printed may not be included in the device discovery
- * information (it is not mandatory). We are thus careful how the
- * information is printed to ensure it is clear to the user what field is
- * being referenced.
- * The information being printed is for one time use - temporary storage is
- * cleaned after it is printed.
- *
- * Ideally sysfs output should be on one line. The information printed here
- * contain a few strings so it will be hard to parse if they are all
- * printed on the same line - without agreeing on a standard field
- * separator.
- */
-static
-ssize_t wlp_wss_neighborhood_print_remove(struct wlp *wlp, char *buf,
- size_t bufsize)
-{
- size_t used = 0;
- struct wlp_neighbor_e *neighb;
- struct wlp_wssid_e *wssid_e;
-
- mutex_lock(&wlp->nbmutex);
- used = scnprintf(buf, bufsize, "#Neighbor information\n"
- "#uuid dev_addr\n"
- "# Device Name:\n# Model Name:\n# Manufacturer:\n"
- "# Model Nr:\n# Serial:\n"
- "# Pri Dev type: CategoryID OUI OUISubdiv "
- "SubcategoryID\n"
- "# WSS: WSSID WSS_name accept_enroll sec_status "
- "bcast\n"
- "# WSS: WSSID WSS_name accept_enroll sec_status "
- "bcast\n\n");
- list_for_each_entry(neighb, &wlp->neighbors, node) {
- if (bufsize - used <= 0)
- goto out;
- used += wlp_wss_uuid_print(buf + used, bufsize - used,
- &neighb->uuid);
- buf[used++] = ' ';
- used += uwb_dev_addr_print(buf + used, bufsize - used,
- &neighb->uwb_dev->dev_addr);
- if (neighb->info != NULL)
- used += scnprintf(buf + used, bufsize - used,
- "\n Device Name: %s\n"
- " Model Name: %s\n"
- " Manufacturer:%s \n"
- " Model Nr: %s\n"
- " Serial: %s\n"
- " Pri Dev type: "
- "%u %02x:%02x:%02x %u %u\n",
- neighb->info->name,
- neighb->info->model_name,
- neighb->info->manufacturer,
- neighb->info->model_nr,
- neighb->info->serial,
- neighb->info->prim_dev_type.category,
- neighb->info->prim_dev_type.OUI[0],
- neighb->info->prim_dev_type.OUI[1],
- neighb->info->prim_dev_type.OUI[2],
- neighb->info->prim_dev_type.OUIsubdiv,
- neighb->info->prim_dev_type.subID);
- list_for_each_entry(wssid_e, &neighb->wssid, node) {
- used += wlp_wss_wssid_e_print(buf + used,
- bufsize - used,
- wssid_e);
- }
- buf[used++] = '\n';
- wlp_remove_neighbor_tmp_info(neighb);
- }
-
-
-out:
- mutex_unlock(&wlp->nbmutex);
- return used;
-}
-
-
-/**
- * Show properties of all WSS in neighborhood.
- *
- * Will trigger a complete discovery of WSS activated by this device and
- * its neighbors.
- */
-ssize_t wlp_neighborhood_show(struct wlp *wlp, char *buf)
-{
- wlp_discover(wlp);
- return wlp_wss_neighborhood_print_remove(wlp, buf, PAGE_SIZE);
-}
-EXPORT_SYMBOL_GPL(wlp_neighborhood_show);
-
-static
-ssize_t __wlp_wss_properties_show(struct wlp_wss *wss, char *buf,
- size_t bufsize)
-{
- ssize_t result;
-
- result = wlp_wss_uuid_print(buf, bufsize, &wss->wssid);
- result += scnprintf(buf + result, bufsize - result, " ");
- result += uwb_mac_addr_print(buf + result, bufsize - result,
- &wss->bcast);
- result += scnprintf(buf + result, bufsize - result,
- " 0x%02x %u ", wss->hash, wss->secure_status);
- result += wlp_wss_key_print(buf + result, bufsize - result,
- wss->master_key);
- result += scnprintf(buf + result, bufsize - result, " 0x%02x ",
- wss->tag);
- result += uwb_mac_addr_print(buf + result, bufsize - result,
- &wss->virtual_addr);
- result += scnprintf(buf + result, bufsize - result, " %s", wss->name);
- result += scnprintf(buf + result, bufsize - result,
- "\n\n#WSSID\n#WSS broadcast address\n"
- "#WSS hash\n#WSS secure status\n"
- "#WSS master key\n#WSS local tag\n"
- "#WSS local virtual EUI-48\n#WSS name\n");
- return result;
-}
-
-/**
- * Show which WSS is activated.
- */
-ssize_t wlp_wss_activate_show(struct wlp_wss *wss, char *buf)
-{
- int result = 0;
-
- if (mutex_lock_interruptible(&wss->mutex))
- goto out;
- if (wss->state >= WLP_WSS_STATE_ACTIVE)
- result = __wlp_wss_properties_show(wss, buf, PAGE_SIZE);
- else
- result = scnprintf(buf, PAGE_SIZE, "No local WSS active.\n");
- result += scnprintf(buf + result, PAGE_SIZE - result,
- "\n\n"
- "# echo WSSID SECURE_STATUS ACCEPT_ENROLLMENT "
- "NAME #create new WSS\n"
- "# echo WSSID [DEV ADDR] #enroll in and activate "
- "existing WSS, can request registrar\n"
- "#\n"
- "# WSSID is a 16 byte hex array. Eg. 12 A3 3B ... \n"
- "# SECURE_STATUS 0 - unsecure, 1 - secure (default)\n"
- "# ACCEPT_ENROLLMENT 0 - no, 1 - yes (default)\n"
- "# NAME is the text string identifying the WSS\n"
- "# DEV ADDR is the device address of neighbor "
- "that should be registrar. Eg. 32:AB\n");
-
- mutex_unlock(&wss->mutex);
-out:
- return result;
-
-}
-EXPORT_SYMBOL_GPL(wlp_wss_activate_show);
-
-/**
- * Create/activate a new WSS or enroll/activate in neighboring WSS
- *
- * The user can provide the WSSID of a WSS in which it wants to enroll.
- * Only the WSSID is necessary if the WSS have been discovered before. If
- * the WSS has not been discovered before, or the user wants to use a
- * particular neighbor as its registrar, then the user can also provide a
- * device address or the neighbor that will be used as registrar.
- *
- * A new WSS is created when the user provides a WSSID, secure status, and
- * WSS name.
- */
-ssize_t wlp_wss_activate_store(struct wlp_wss *wss,
- const char *buf, size_t size)
-{
- ssize_t result = -EINVAL;
- struct wlp_uuid wssid;
- struct uwb_dev_addr dev;
- struct uwb_dev_addr bcast = {.data = {0xff, 0xff} };
- char name[65];
- unsigned sec_status, accept;
- memset(name, 0, sizeof(name));
- result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx "
- "%02hhx %02hhx %02hhx %02hhx "
- "%02hhx %02hhx %02hhx %02hhx "
- "%02hhx %02hhx %02hhx %02hhx "
- "%02hhx:%02hhx",
- &wssid.data[0] , &wssid.data[1],
- &wssid.data[2] , &wssid.data[3],
- &wssid.data[4] , &wssid.data[5],
- &wssid.data[6] , &wssid.data[7],
- &wssid.data[8] , &wssid.data[9],
- &wssid.data[10], &wssid.data[11],
- &wssid.data[12], &wssid.data[13],
- &wssid.data[14], &wssid.data[15],
- &dev.data[1], &dev.data[0]);
- if (result == 16 || result == 17) {
- result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx "
- "%02hhx %02hhx %02hhx %02hhx "
- "%02hhx %02hhx %02hhx %02hhx "
- "%02hhx %02hhx %02hhx %02hhx "
- "%u %u %64c",
- &wssid.data[0] , &wssid.data[1],
- &wssid.data[2] , &wssid.data[3],
- &wssid.data[4] , &wssid.data[5],
- &wssid.data[6] , &wssid.data[7],
- &wssid.data[8] , &wssid.data[9],
- &wssid.data[10], &wssid.data[11],
- &wssid.data[12], &wssid.data[13],
- &wssid.data[14], &wssid.data[15],
- &sec_status, &accept, name);
- if (result == 16)
- result = wlp_wss_enroll_activate(wss, &wssid, &bcast);
- else if (result == 19) {
- sec_status = sec_status == 0 ? 0 : 1;
- accept = accept == 0 ? 0 : 1;
- /* We read name using %c, so the newline needs to be
- * removed */
- if (strlen(name) != sizeof(name) - 1)
- name[strlen(name) - 1] = '\0';
- result = wlp_wss_create_activate(wss, &wssid, name,
- sec_status, accept);
- } else
- result = -EINVAL;
- } else if (result == 18)
- result = wlp_wss_enroll_activate(wss, &wssid, &dev);
- else
- result = -EINVAL;
- return result < 0 ? result : size;
-}
-EXPORT_SYMBOL_GPL(wlp_wss_activate_store);
-
-/**
- * Show the UUID of this host
- */
-ssize_t wlp_uuid_show(struct wlp *wlp, char *buf)
-{
- ssize_t result = 0;
-
- mutex_lock(&wlp->mutex);
- result = wlp_wss_uuid_print(buf, PAGE_SIZE, &wlp->uuid);
- buf[result++] = '\n';
- mutex_unlock(&wlp->mutex);
- return result;
-}
-EXPORT_SYMBOL_GPL(wlp_uuid_show);
-
-/**
- * Store a new UUID for this host
- *
- * According to the spec this should be encoded as an octet string in the
- * order the octets are shown in string representation in RFC 4122 (WLP
- * 0.99 [Table 6])
- *
- * We do not check value provided by user.
- */
-ssize_t wlp_uuid_store(struct wlp *wlp, const char *buf, size_t size)
-{
- ssize_t result;
- struct wlp_uuid uuid;
-
- mutex_lock(&wlp->mutex);
- result = sscanf(buf, "%02hhx %02hhx %02hhx %02hhx "
- "%02hhx %02hhx %02hhx %02hhx "
- "%02hhx %02hhx %02hhx %02hhx "
- "%02hhx %02hhx %02hhx %02hhx ",
- &uuid.data[0] , &uuid.data[1],
- &uuid.data[2] , &uuid.data[3],
- &uuid.data[4] , &uuid.data[5],
- &uuid.data[6] , &uuid.data[7],
- &uuid.data[8] , &uuid.data[9],
- &uuid.data[10], &uuid.data[11],
- &uuid.data[12], &uuid.data[13],
- &uuid.data[14], &uuid.data[15]);
- if (result != 16) {
- result = -EINVAL;
- goto error;
- }
- wlp->uuid = uuid;
-error:
- mutex_unlock(&wlp->mutex);
- return result < 0 ? result : size;
-}
-EXPORT_SYMBOL_GPL(wlp_uuid_store);
-
-/**
- * Show contents of members of device information structure
- */
-#define wlp_dev_info_show(type) \
-ssize_t wlp_dev_##type##_show(struct wlp *wlp, char *buf) \
-{ \
- ssize_t result = 0; \
- mutex_lock(&wlp->mutex); \
- if (wlp->dev_info == NULL) { \
- result = __wlp_setup_device_info(wlp); \
- if (result < 0) \
- goto out; \
- } \
- result = scnprintf(buf, PAGE_SIZE, "%s\n", wlp->dev_info->type);\
-out: \
- mutex_unlock(&wlp->mutex); \
- return result; \
-} \
-EXPORT_SYMBOL_GPL(wlp_dev_##type##_show);
-
-wlp_dev_info_show(name)
-wlp_dev_info_show(model_name)
-wlp_dev_info_show(model_nr)
-wlp_dev_info_show(manufacturer)
-wlp_dev_info_show(serial)
-
-/**
- * Store contents of members of device information structure
- */
-#define wlp_dev_info_store(type, len) \
-ssize_t wlp_dev_##type##_store(struct wlp *wlp, const char *buf, size_t size)\
-{ \
- ssize_t result; \
- char format[10]; \
- mutex_lock(&wlp->mutex); \
- if (wlp->dev_info == NULL) { \
- result = __wlp_alloc_device_info(wlp); \
- if (result < 0) \
- goto out; \
- } \
- memset(wlp->dev_info->type, 0, sizeof(wlp->dev_info->type)); \
- sprintf(format, "%%%uc", len); \
- result = sscanf(buf, format, wlp->dev_info->type); \
-out: \
- mutex_unlock(&wlp->mutex); \
- return result < 0 ? result : size; \
-} \
-EXPORT_SYMBOL_GPL(wlp_dev_##type##_store);
-
-wlp_dev_info_store(name, 32)
-wlp_dev_info_store(manufacturer, 64)
-wlp_dev_info_store(model_name, 32)
-wlp_dev_info_store(model_nr, 32)
-wlp_dev_info_store(serial, 32)
-
-static
-const char *__wlp_dev_category[] = {
- [WLP_DEV_CAT_COMPUTER] = "Computer",
- [WLP_DEV_CAT_INPUT] = "Input device",
- [WLP_DEV_CAT_PRINT_SCAN_FAX_COPIER] = "Printer, scanner, FAX, or "
- "Copier",
- [WLP_DEV_CAT_CAMERA] = "Camera",
- [WLP_DEV_CAT_STORAGE] = "Storage Network",
- [WLP_DEV_CAT_INFRASTRUCTURE] = "Infrastructure",
- [WLP_DEV_CAT_DISPLAY] = "Display",
- [WLP_DEV_CAT_MULTIM] = "Multimedia device",
- [WLP_DEV_CAT_GAMING] = "Gaming device",
- [WLP_DEV_CAT_TELEPHONE] = "Telephone",
- [WLP_DEV_CAT_OTHER] = "Other",
-};
-
-static
-const char *wlp_dev_category_str(unsigned cat)
-{
- if ((cat >= WLP_DEV_CAT_COMPUTER && cat <= WLP_DEV_CAT_TELEPHONE)
- || cat == WLP_DEV_CAT_OTHER)
- return __wlp_dev_category[cat];
- return "unknown category";
-}
-
-ssize_t wlp_dev_prim_category_show(struct wlp *wlp, char *buf)
-{
- ssize_t result = 0;
- mutex_lock(&wlp->mutex);
- if (wlp->dev_info == NULL) {
- result = __wlp_setup_device_info(wlp);
- if (result < 0)
- goto out;
- }
- result = scnprintf(buf, PAGE_SIZE, "%s\n",
- wlp_dev_category_str(wlp->dev_info->prim_dev_type.category));
-out:
- mutex_unlock(&wlp->mutex);
- return result;
-}
-EXPORT_SYMBOL_GPL(wlp_dev_prim_category_show);
-
-ssize_t wlp_dev_prim_category_store(struct wlp *wlp, const char *buf,
- size_t size)
-{
- ssize_t result;
- u16 cat;
- mutex_lock(&wlp->mutex);
- if (wlp->dev_info == NULL) {
- result = __wlp_alloc_device_info(wlp);
- if (result < 0)
- goto out;
- }
- result = sscanf(buf, "%hu", &cat);
- if ((cat >= WLP_DEV_CAT_COMPUTER && cat <= WLP_DEV_CAT_TELEPHONE)
- || cat == WLP_DEV_CAT_OTHER)
- wlp->dev_info->prim_dev_type.category = cat;
- else
- result = -EINVAL;
-out:
- mutex_unlock(&wlp->mutex);
- return result < 0 ? result : size;
-}
-EXPORT_SYMBOL_GPL(wlp_dev_prim_category_store);
-
-ssize_t wlp_dev_prim_OUI_show(struct wlp *wlp, char *buf)
-{
- ssize_t result = 0;
- mutex_lock(&wlp->mutex);
- if (wlp->dev_info == NULL) {
- result = __wlp_setup_device_info(wlp);
- if (result < 0)
- goto out;
- }
- result = scnprintf(buf, PAGE_SIZE, "%02x:%02x:%02x\n",
- wlp->dev_info->prim_dev_type.OUI[0],
- wlp->dev_info->prim_dev_type.OUI[1],
- wlp->dev_info->prim_dev_type.OUI[2]);
-out:
- mutex_unlock(&wlp->mutex);
- return result;
-}
-EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_show);
-
-ssize_t wlp_dev_prim_OUI_store(struct wlp *wlp, const char *buf, size_t size)
-{
- ssize_t result;
- u8 OUI[3];
- mutex_lock(&wlp->mutex);
- if (wlp->dev_info == NULL) {
- result = __wlp_alloc_device_info(wlp);
- if (result < 0)
- goto out;
- }
- result = sscanf(buf, "%hhx:%hhx:%hhx",
- &OUI[0], &OUI[1], &OUI[2]);
- if (result != 3) {
- result = -EINVAL;
- goto out;
- } else
- memcpy(wlp->dev_info->prim_dev_type.OUI, OUI, sizeof(OUI));
-out:
- mutex_unlock(&wlp->mutex);
- return result < 0 ? result : size;
-}
-EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_store);
-
-
-ssize_t wlp_dev_prim_OUI_sub_show(struct wlp *wlp, char *buf)
-{
- ssize_t result = 0;
- mutex_lock(&wlp->mutex);
- if (wlp->dev_info == NULL) {
- result = __wlp_setup_device_info(wlp);
- if (result < 0)
- goto out;
- }
- result = scnprintf(buf, PAGE_SIZE, "%u\n",
- wlp->dev_info->prim_dev_type.OUIsubdiv);
-out:
- mutex_unlock(&wlp->mutex);
- return result;
-}
-EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_sub_show);
-
-ssize_t wlp_dev_prim_OUI_sub_store(struct wlp *wlp, const char *buf,
- size_t size)
-{
- ssize_t result;
- unsigned sub;
- u8 max_sub = ~0;
- mutex_lock(&wlp->mutex);
- if (wlp->dev_info == NULL) {
- result = __wlp_alloc_device_info(wlp);
- if (result < 0)
- goto out;
- }
- result = sscanf(buf, "%u", &sub);
- if (sub <= max_sub)
- wlp->dev_info->prim_dev_type.OUIsubdiv = sub;
- else
- result = -EINVAL;
-out:
- mutex_unlock(&wlp->mutex);
- return result < 0 ? result : size;
-}
-EXPORT_SYMBOL_GPL(wlp_dev_prim_OUI_sub_store);
-
-ssize_t wlp_dev_prim_subcat_show(struct wlp *wlp, char *buf)
-{
- ssize_t result = 0;
- mutex_lock(&wlp->mutex);
- if (wlp->dev_info == NULL) {
- result = __wlp_setup_device_info(wlp);
- if (result < 0)
- goto out;
- }
- result = scnprintf(buf, PAGE_SIZE, "%u\n",
- wlp->dev_info->prim_dev_type.subID);
-out:
- mutex_unlock(&wlp->mutex);
- return result;
-}
-EXPORT_SYMBOL_GPL(wlp_dev_prim_subcat_show);
-
-ssize_t wlp_dev_prim_subcat_store(struct wlp *wlp, const char *buf,
- size_t size)
-{
- ssize_t result;
- unsigned sub;
- __le16 max_sub = ~0;
- mutex_lock(&wlp->mutex);
- if (wlp->dev_info == NULL) {
- result = __wlp_alloc_device_info(wlp);
- if (result < 0)
- goto out;
- }
- result = sscanf(buf, "%u", &sub);
- if (sub <= max_sub)
- wlp->dev_info->prim_dev_type.subID = sub;
- else
- result = -EINVAL;
-out:
- mutex_unlock(&wlp->mutex);
- return result < 0 ? result : size;
-}
-EXPORT_SYMBOL_GPL(wlp_dev_prim_subcat_store);
-
-/**
- * Subsystem implementation for interaction with individual WSS via sysfs
- *
- * Followed instructions for subsystem in Documentation/filesystems/sysfs.txt
- */
-
-#define kobj_to_wlp_wss(obj) container_of(obj, struct wlp_wss, kobj)
-#define attr_to_wlp_wss_attr(_attr) \
- container_of(_attr, struct wlp_wss_attribute, attr)
-
-/**
- * Sysfs subsystem: forward read calls
- *
- * Sysfs operation for forwarding read call to the show method of the
- * attribute owner
- */
-static
-ssize_t wlp_wss_attr_show(struct kobject *kobj, struct attribute *attr,
- char *buf)
-{
- struct wlp_wss_attribute *wss_attr = attr_to_wlp_wss_attr(attr);
- struct wlp_wss *wss = kobj_to_wlp_wss(kobj);
- ssize_t ret = -EIO;
-
- if (wss_attr->show)
- ret = wss_attr->show(wss, buf);
- return ret;
-}
-/**
- * Sysfs subsystem: forward write calls
- *
- * Sysfs operation for forwarding write call to the store method of the
- * attribute owner
- */
-static
-ssize_t wlp_wss_attr_store(struct kobject *kobj, struct attribute *attr,
- const char *buf, size_t count)
-{
- struct wlp_wss_attribute *wss_attr = attr_to_wlp_wss_attr(attr);
- struct wlp_wss *wss = kobj_to_wlp_wss(kobj);
- ssize_t ret = -EIO;
-
- if (wss_attr->store)
- ret = wss_attr->store(wss, buf, count);
- return ret;
-}
-
-static const struct sysfs_ops wss_sysfs_ops = {
- .show = wlp_wss_attr_show,
- .store = wlp_wss_attr_store,
-};
-
-struct kobj_type wss_ktype = {
- .release = wlp_wss_release,
- .sysfs_ops = &wss_sysfs_ops,
-};
-
-
-/**
- * Sysfs files for individual WSS
- */
-
-/**
- * Print static properties of this WSS
- *
- * The name of a WSS may not be null teminated. It's max size is 64 bytes
- * so we copy it to a larger array just to make sure we print sane data.
- */
-static ssize_t wlp_wss_properties_show(struct wlp_wss *wss, char *buf)
-{
- int result = 0;
-
- if (mutex_lock_interruptible(&wss->mutex))
- goto out;
- result = __wlp_wss_properties_show(wss, buf, PAGE_SIZE);
- mutex_unlock(&wss->mutex);
-out:
- return result;
-}
-WSS_ATTR(properties, S_IRUGO, wlp_wss_properties_show, NULL);
-
-/**
- * Print all connected members of this WSS
- * The EDA cache contains all members of WSS neighborhood.
- */
-static ssize_t wlp_wss_members_show(struct wlp_wss *wss, char *buf)
-{
- struct wlp *wlp = container_of(wss, struct wlp, wss);
- return wlp_eda_show(wlp, buf);
-}
-WSS_ATTR(members, S_IRUGO, wlp_wss_members_show, NULL);
-
-static
-const char *__wlp_strstate[] = {
- "none",
- "partially enrolled",
- "enrolled",
- "active",
- "connected",
-};
-
-static const char *wlp_wss_strstate(unsigned state)
-{
- if (state >= ARRAY_SIZE(__wlp_strstate))
- return "unknown state";
- return __wlp_strstate[state];
-}
-
-/*
- * Print current state of this WSS
- */
-static ssize_t wlp_wss_state_show(struct wlp_wss *wss, char *buf)
-{
- int result = 0;
-
- if (mutex_lock_interruptible(&wss->mutex))
- goto out;
- result = scnprintf(buf, PAGE_SIZE, "%s\n",
- wlp_wss_strstate(wss->state));
- mutex_unlock(&wss->mutex);
-out:
- return result;
-}
-WSS_ATTR(state, S_IRUGO, wlp_wss_state_show, NULL);
-
-
-static
-struct attribute *wss_attrs[] = {
- &wss_attr_properties.attr,
- &wss_attr_members.attr,
- &wss_attr_state.attr,
- NULL,
-};
-
-struct attribute_group wss_attr_group = {
- .name = NULL, /* we want them in the same directory */
- .attrs = wss_attrs,
-};
+++ /dev/null
-/*
- * WiMedia Logical Link Control Protocol (WLP)
- * Message exchange infrastructure
- *
- * Copyright (C) 2007 Intel Corporation
- * Reinette Chatre <reinette.chatre@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * FIXME: Docs
- *
- */
-
-#include <linux/etherdevice.h>
-#include <linux/slab.h>
-#include <linux/wlp.h>
-
-#include "wlp-internal.h"
-
-/*
- * Direct incoming association msg to correct parsing routine
- *
- * We only expect D1, E1, C1, C3 messages as new. All other incoming
- * association messages should form part of an established session that is
- * handled elsewhere.
- * The handling of these messages often require calling sleeping functions
- * - this cannot be done in interrupt context. We use the kernel's
- * workqueue to handle these messages.
- */
-static
-void wlp_direct_assoc_frame(struct wlp *wlp, struct sk_buff *skb,
- struct uwb_dev_addr *src)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct wlp_frame_assoc *assoc = (void *) skb->data;
- struct wlp_assoc_frame_ctx *frame_ctx;
-
- frame_ctx = kmalloc(sizeof(*frame_ctx), GFP_ATOMIC);
- if (frame_ctx == NULL) {
- dev_err(dev, "WLP: Unable to allocate memory for association "
- "frame handling.\n");
- kfree_skb(skb);
- return;
- }
- frame_ctx->wlp = wlp;
- frame_ctx->skb = skb;
- frame_ctx->src = *src;
- switch (assoc->type) {
- case WLP_ASSOC_D1:
- INIT_WORK(&frame_ctx->ws, wlp_handle_d1_frame);
- schedule_work(&frame_ctx->ws);
- break;
- case WLP_ASSOC_E1:
- kfree_skb(skb); /* Temporary until we handle it */
- kfree(frame_ctx); /* Temporary until we handle it */
- break;
- case WLP_ASSOC_C1:
- INIT_WORK(&frame_ctx->ws, wlp_handle_c1_frame);
- schedule_work(&frame_ctx->ws);
- break;
- case WLP_ASSOC_C3:
- INIT_WORK(&frame_ctx->ws, wlp_handle_c3_frame);
- schedule_work(&frame_ctx->ws);
- break;
- default:
- dev_err(dev, "Received unexpected association frame. "
- "Type = %d \n", assoc->type);
- kfree_skb(skb);
- kfree(frame_ctx);
- break;
- }
-}
-
-/*
- * Process incoming association frame
- *
- * Although it could be possible to deal with some incoming association
- * messages without creating a new session we are keeping things simple. We
- * do not accept new association messages if there is a session in progress
- * and the messages do not belong to that session.
- *
- * If an association message arrives that causes the creation of a session
- * (WLP_ASSOC_E1) while we are in the process of creating a session then we
- * rely on the neighbor mutex to protect the data. That is, the new session
- * will not be started until the previous is completed.
- */
-static
-void wlp_receive_assoc_frame(struct wlp *wlp, struct sk_buff *skb,
- struct uwb_dev_addr *src)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct wlp_frame_assoc *assoc = (void *) skb->data;
- struct wlp_session *session = wlp->session;
- u8 version;
-
- if (wlp_get_version(wlp, &assoc->version, &version,
- sizeof(assoc->version)) < 0)
- goto error;
- if (version != WLP_VERSION) {
- dev_err(dev, "Unsupported WLP version in association "
- "message.\n");
- goto error;
- }
- if (session != NULL) {
- /* Function that created this session is still holding the
- * &wlp->mutex to protect this session. */
- if (assoc->type == session->exp_message ||
- assoc->type == WLP_ASSOC_F0) {
- if (!memcmp(&session->neighbor_addr, src,
- sizeof(*src))) {
- session->data = skb;
- (session->cb)(wlp);
- } else {
- dev_err(dev, "Received expected message from "
- "unexpected source. Expected message "
- "%d or F0 from %02x:%02x, but received "
- "it from %02x:%02x. Dropping.\n",
- session->exp_message,
- session->neighbor_addr.data[1],
- session->neighbor_addr.data[0],
- src->data[1], src->data[0]);
- goto error;
- }
- } else {
- dev_err(dev, "Association already in progress. "
- "Dropping.\n");
- goto error;
- }
- } else {
- wlp_direct_assoc_frame(wlp, skb, src);
- }
- return;
-error:
- kfree_skb(skb);
-}
-
-/*
- * Verify incoming frame is from connected neighbor, prep to pass to WLP client
- *
- * Verification proceeds according to WLP 0.99 [7.3.1]. The source address
- * is used to determine which neighbor is sending the frame and the WSS tag
- * is used to know to which WSS the frame belongs (we only support one WSS
- * so this test is straight forward).
- * With the WSS found we need to ensure that we are connected before
- * allowing the exchange of data frames.
- */
-static
-int wlp_verify_prep_rx_frame(struct wlp *wlp, struct sk_buff *skb,
- struct uwb_dev_addr *src)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- int result = -EINVAL;
- struct wlp_eda_node eda_entry;
- struct wlp_frame_std_abbrv_hdr *hdr = (void *) skb->data;
-
- /*verify*/
- result = wlp_copy_eda_node(&wlp->eda, src, &eda_entry);
- if (result < 0) {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Incoming frame is from unknown "
- "neighbor %02x:%02x.\n", src->data[1],
- src->data[0]);
- goto out;
- }
- if (hdr->tag != eda_entry.tag) {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Tag of incoming frame from "
- "%02x:%02x does not match expected tag. "
- "Received 0x%02x, expected 0x%02x. \n",
- src->data[1], src->data[0], hdr->tag,
- eda_entry.tag);
- result = -EINVAL;
- goto out;
- }
- if (eda_entry.state != WLP_WSS_CONNECTED) {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Incoming frame from "
- "%02x:%02x does is not from connected WSS.\n",
- src->data[1], src->data[0]);
- result = -EINVAL;
- goto out;
- }
- /*prep*/
- skb_pull(skb, sizeof(*hdr));
-out:
- return result;
-}
-
-/*
- * Receive a WLP frame from device
- *
- * @returns: 1 if calling function should free the skb
- * 0 if it successfully handled skb and freed it
- * 0 if error occured, will free skb in this case
- */
-int wlp_receive_frame(struct device *dev, struct wlp *wlp, struct sk_buff *skb,
- struct uwb_dev_addr *src)
-{
- unsigned len = skb->len;
- void *ptr = skb->data;
- struct wlp_frame_hdr *hdr;
- int result = 0;
-
- if (len < sizeof(*hdr)) {
- dev_err(dev, "Not enough data to parse WLP header.\n");
- result = -EINVAL;
- goto out;
- }
- hdr = ptr;
- if (le16_to_cpu(hdr->mux_hdr) != WLP_PROTOCOL_ID) {
- dev_err(dev, "Not a WLP frame type.\n");
- result = -EINVAL;
- goto out;
- }
- switch (hdr->type) {
- case WLP_FRAME_STANDARD:
- if (len < sizeof(struct wlp_frame_std_abbrv_hdr)) {
- dev_err(dev, "Not enough data to parse Standard "
- "WLP header.\n");
- goto out;
- }
- result = wlp_verify_prep_rx_frame(wlp, skb, src);
- if (result < 0) {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Verification of frame "
- "from neighbor %02x:%02x failed.\n",
- src->data[1], src->data[0]);
- goto out;
- }
- result = 1;
- break;
- case WLP_FRAME_ABBREVIATED:
- dev_err(dev, "Abbreviated frame received. FIXME?\n");
- kfree_skb(skb);
- break;
- case WLP_FRAME_CONTROL:
- dev_err(dev, "Control frame received. FIXME?\n");
- kfree_skb(skb);
- break;
- case WLP_FRAME_ASSOCIATION:
- if (len < sizeof(struct wlp_frame_assoc)) {
- dev_err(dev, "Not enough data to parse Association "
- "WLP header.\n");
- goto out;
- }
- wlp_receive_assoc_frame(wlp, skb, src);
- break;
- default:
- dev_err(dev, "Invalid frame received.\n");
- result = -EINVAL;
- break;
- }
-out:
- if (result < 0) {
- kfree_skb(skb);
- result = 0;
- }
- return result;
-}
-EXPORT_SYMBOL_GPL(wlp_receive_frame);
-
-
-/*
- * Verify frame from network stack, prepare for further transmission
- *
- * @skb: the socket buffer that needs to be prepared for transmission (it
- * is in need of a WLP header). If this is a broadcast frame we take
- * over the entire transmission.
- * If it is a unicast the WSS connection should already be established
- * and transmission will be done by the calling function.
- * @dst: On return this will contain the device address to which the
- * frame is destined.
- * @returns: 0 on success no tx : WLP header successfully applied to skb buffer,
- * calling function can proceed with tx
- * 1 on success with tx : WLP will take over transmission of this
- * frame
- * <0 on error
- *
- * The network stack (WLP client) is attempting to transmit a frame. We can
- * only transmit data if a local WSS is at least active (connection will be
- * done here if this is a broadcast frame and neighbor also has the WSS
- * active).
- *
- * The frame can be either broadcast or unicast. Broadcast in a WSS is
- * supported via multicast, but we don't support multicast yet (until
- * devices start to support MAB IEs). If a broadcast frame needs to be
- * transmitted it is treated as a unicast frame to each neighbor. In this
- * case the WLP takes over transmission of the skb and returns 1
- * to the caller to indicate so. Also, in this case, if a neighbor has the
- * same WSS activated but is not connected then the WSS connection will be
- * done at this time. The neighbor's virtual address will be learned at
- * this time.
- *
- * The destination address in a unicast frame is the virtual address of the
- * neighbor. This address only becomes known when a WSS connection is
- * established. We thus rely on a broadcast frame to trigger the setup of
- * WSS connections to all neighbors before we are able to send unicast
- * frames to them. This seems reasonable as IP would usually use ARP first
- * before any unicast frames are sent.
- *
- * If we are already connected to the neighbor (neighbor's virtual address
- * is known) we just prepare the WLP header and the caller will continue to
- * send the frame.
- *
- * A failure in this function usually indicates something that cannot be
- * fixed automatically. So, if this function fails (@return < 0) the calling
- * function should not retry to send the frame as it will very likely keep
- * failing.
- *
- */
-int wlp_prepare_tx_frame(struct device *dev, struct wlp *wlp,
- struct sk_buff *skb, struct uwb_dev_addr *dst)
-{
- int result = -EINVAL;
- struct ethhdr *eth_hdr = (void *) skb->data;
-
- if (is_multicast_ether_addr(eth_hdr->h_dest)) {
- result = wlp_eda_for_each(&wlp->eda, wlp_wss_send_copy, skb);
- if (result < 0) {
- if (printk_ratelimit())
- dev_err(dev, "Unable to handle broadcast "
- "frame from WLP client.\n");
- goto out;
- }
- dev_kfree_skb_irq(skb);
- result = 1;
- /* Frame will be transmitted by WLP. */
- } else {
- result = wlp_eda_for_virtual(&wlp->eda, eth_hdr->h_dest, dst,
- wlp_wss_prep_hdr, skb);
- if (unlikely(result < 0)) {
- if (printk_ratelimit())
- dev_err(dev, "Unable to prepare "
- "skb for transmission. \n");
- goto out;
- }
- }
-out:
- return result;
-}
-EXPORT_SYMBOL_GPL(wlp_prepare_tx_frame);
+++ /dev/null
-/*
- * WiMedia Logical Link Control Protocol (WLP)
- * Internal API
- *
- * Copyright (C) 2007 Intel Corporation
- * Reinette Chatre <reinette.chatre@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- */
-
-#ifndef __WLP_INTERNAL_H__
-#define __WLP_INTERNAL_H__
-
-/**
- * State of WSS connection
- *
- * A device needs to connect to a neighbor in an activated WSS before data
- * can be transmitted. The spec also distinguishes between a new connection
- * attempt and a connection attempt after previous connection attempts. The
- * state WLP_WSS_CONNECT_FAILED is used for this scenario. See WLP 0.99
- * [7.2.6]
- */
-enum wlp_wss_connect {
- WLP_WSS_UNCONNECTED = 0,
- WLP_WSS_CONNECTED,
- WLP_WSS_CONNECT_FAILED,
-};
-
-extern struct kobj_type wss_ktype;
-extern struct attribute_group wss_attr_group;
-
-/* This should be changed to a dynamic array where entries are sorted
- * by eth_addr and search is done in a binary form
- *
- * Although thinking twice about it: this technologie's maximum reach
- * is 10 meters...unless you want to pack too much stuff in around
- * your radio controller/WLP device, the list will probably not be
- * too big.
- *
- * In any case, there is probably some data structure in the kernel
- * than we could reused for that already.
- *
- * The below structure is really just good while we support one WSS per
- * host.
- */
-struct wlp_eda_node {
- struct list_head list_node;
- unsigned char eth_addr[ETH_ALEN];
- struct uwb_dev_addr dev_addr;
- struct wlp_wss *wss;
- unsigned char virt_addr[ETH_ALEN];
- u8 tag;
- enum wlp_wss_connect state;
-};
-
-typedef int (*wlp_eda_for_each_f)(struct wlp *, struct wlp_eda_node *, void *);
-
-extern void wlp_eda_init(struct wlp_eda *);
-extern void wlp_eda_release(struct wlp_eda *);
-extern int wlp_eda_create_node(struct wlp_eda *,
- const unsigned char eth_addr[ETH_ALEN],
- const struct uwb_dev_addr *);
-extern void wlp_eda_rm_node(struct wlp_eda *, const struct uwb_dev_addr *);
-extern int wlp_eda_update_node(struct wlp_eda *,
- const struct uwb_dev_addr *,
- struct wlp_wss *,
- const unsigned char virt_addr[ETH_ALEN],
- const u8, const enum wlp_wss_connect);
-extern int wlp_eda_update_node_state(struct wlp_eda *,
- const struct uwb_dev_addr *,
- const enum wlp_wss_connect);
-
-extern int wlp_copy_eda_node(struct wlp_eda *, struct uwb_dev_addr *,
- struct wlp_eda_node *);
-extern int wlp_eda_for_each(struct wlp_eda *, wlp_eda_for_each_f , void *);
-extern int wlp_eda_for_virtual(struct wlp_eda *,
- const unsigned char eth_addr[ETH_ALEN],
- struct uwb_dev_addr *,
- wlp_eda_for_each_f , void *);
-
-
-extern void wlp_remove_neighbor_tmp_info(struct wlp_neighbor_e *);
-
-extern size_t wlp_wss_key_print(char *, size_t, u8 *);
-
-/* Function called when no more references to WSS exists */
-extern void wlp_wss_release(struct kobject *);
-
-extern void wlp_wss_reset(struct wlp_wss *);
-extern int wlp_wss_create_activate(struct wlp_wss *, struct wlp_uuid *,
- char *, unsigned, unsigned);
-extern int wlp_wss_enroll_activate(struct wlp_wss *, struct wlp_uuid *,
- struct uwb_dev_addr *);
-extern ssize_t wlp_discover(struct wlp *);
-
-extern int wlp_enroll_neighbor(struct wlp *, struct wlp_neighbor_e *,
- struct wlp_wss *, struct wlp_uuid *);
-extern int wlp_wss_is_active(struct wlp *, struct wlp_wss *,
- struct uwb_dev_addr *);
-
-struct wlp_assoc_conn_ctx {
- struct work_struct ws;
- struct wlp *wlp;
- struct sk_buff *skb;
- struct wlp_eda_node eda_entry;
-};
-
-
-extern int wlp_wss_connect_prep(struct wlp *, struct wlp_eda_node *, void *);
-extern int wlp_wss_send_copy(struct wlp *, struct wlp_eda_node *, void *);
-
-
-/* Message handling */
-struct wlp_assoc_frame_ctx {
- struct work_struct ws;
- struct wlp *wlp;
- struct sk_buff *skb;
- struct uwb_dev_addr src;
-};
-
-extern int wlp_wss_prep_hdr(struct wlp *, struct wlp_eda_node *, void *);
-extern void wlp_handle_d1_frame(struct work_struct *);
-extern int wlp_parse_d2_frame_to_cache(struct wlp *, struct sk_buff *,
- struct wlp_neighbor_e *);
-extern int wlp_parse_d2_frame_to_enroll(struct wlp_wss *, struct sk_buff *,
- struct wlp_neighbor_e *,
- struct wlp_uuid *);
-extern void wlp_handle_c1_frame(struct work_struct *);
-extern void wlp_handle_c3_frame(struct work_struct *);
-extern int wlp_parse_c3c4_frame(struct wlp *, struct sk_buff *,
- struct wlp_uuid *, u8 *,
- struct uwb_mac_addr *);
-extern int wlp_parse_f0(struct wlp *, struct sk_buff *);
-extern int wlp_send_assoc_frame(struct wlp *, struct wlp_wss *,
- struct uwb_dev_addr *, enum wlp_assoc_type);
-extern ssize_t wlp_get_version(struct wlp *, struct wlp_attr_version *,
- u8 *, ssize_t);
-extern ssize_t wlp_get_wssid(struct wlp *, struct wlp_attr_wssid *,
- struct wlp_uuid *, ssize_t);
-extern int __wlp_alloc_device_info(struct wlp *);
-extern int __wlp_setup_device_info(struct wlp *);
-
-extern struct wlp_wss_attribute wss_attribute_properties;
-extern struct wlp_wss_attribute wss_attribute_members;
-extern struct wlp_wss_attribute wss_attribute_state;
-
-static inline
-size_t wlp_wss_uuid_print(char *buf, size_t bufsize, struct wlp_uuid *uuid)
-{
- size_t result;
-
- result = scnprintf(buf, bufsize,
- "%02x:%02x:%02x:%02x:%02x:%02x:"
- "%02x:%02x:%02x:%02x:%02x:%02x:"
- "%02x:%02x:%02x:%02x",
- uuid->data[0], uuid->data[1],
- uuid->data[2], uuid->data[3],
- uuid->data[4], uuid->data[5],
- uuid->data[6], uuid->data[7],
- uuid->data[8], uuid->data[9],
- uuid->data[10], uuid->data[11],
- uuid->data[12], uuid->data[13],
- uuid->data[14], uuid->data[15]);
- return result;
-}
-
-/**
- * FIXME: How should a nonce be displayed?
- */
-static inline
-size_t wlp_wss_nonce_print(char *buf, size_t bufsize, struct wlp_nonce *nonce)
-{
- size_t result;
-
- result = scnprintf(buf, bufsize,
- "%02x %02x %02x %02x %02x %02x "
- "%02x %02x %02x %02x %02x %02x "
- "%02x %02x %02x %02x",
- nonce->data[0], nonce->data[1],
- nonce->data[2], nonce->data[3],
- nonce->data[4], nonce->data[5],
- nonce->data[6], nonce->data[7],
- nonce->data[8], nonce->data[9],
- nonce->data[10], nonce->data[11],
- nonce->data[12], nonce->data[13],
- nonce->data[14], nonce->data[15]);
- return result;
-}
-
-
-static inline
-void wlp_session_cb(struct wlp *wlp)
-{
- struct completion *completion = wlp->session->cb_priv;
- complete(completion);
-}
-
-static inline
-int wlp_uuid_is_set(struct wlp_uuid *uuid)
-{
- struct wlp_uuid zero_uuid = { .data = { 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00} };
-
- if (!memcmp(uuid, &zero_uuid, sizeof(*uuid)))
- return 0;
- return 1;
-}
-
-#endif /* __WLP_INTERNAL_H__ */
+++ /dev/null
-/*
- * WiMedia Logical Link Control Protocol (WLP)
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Reinette Chatre <reinette.chatre@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * FIXME: docs
- */
-#include <linux/wlp.h>
-#include <linux/slab.h>
-
-#include "wlp-internal.h"
-
-static
-void wlp_neighbor_init(struct wlp_neighbor_e *neighbor)
-{
- INIT_LIST_HEAD(&neighbor->wssid);
-}
-
-/**
- * Create area for device information storage
- *
- * wlp->mutex must be held
- */
-int __wlp_alloc_device_info(struct wlp *wlp)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- BUG_ON(wlp->dev_info != NULL);
- wlp->dev_info = kzalloc(sizeof(struct wlp_device_info), GFP_KERNEL);
- if (wlp->dev_info == NULL) {
- dev_err(dev, "WLP: Unable to allocate memory for "
- "device information.\n");
- return -ENOMEM;
- }
- return 0;
-}
-
-
-/**
- * Fill in device information using function provided by driver
- *
- * wlp->mutex must be held
- */
-static
-void __wlp_fill_device_info(struct wlp *wlp)
-{
- wlp->fill_device_info(wlp, wlp->dev_info);
-}
-
-/**
- * Setup device information
- *
- * Allocate area for device information and populate it.
- *
- * wlp->mutex must be held
- */
-int __wlp_setup_device_info(struct wlp *wlp)
-{
- int result;
- struct device *dev = &wlp->rc->uwb_dev.dev;
-
- result = __wlp_alloc_device_info(wlp);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to allocate area for "
- "device information.\n");
- return result;
- }
- __wlp_fill_device_info(wlp);
- return 0;
-}
-
-/**
- * Remove information about neighbor stored temporarily
- *
- * Information learned during discovey should only be stored when the
- * device enrolls in the neighbor's WSS. We do need to store this
- * information temporarily in order to present it to the user.
- *
- * We are only interested in keeping neighbor WSS information if that
- * neighbor is accepting enrollment.
- *
- * should be called with wlp->nbmutex held
- */
-void wlp_remove_neighbor_tmp_info(struct wlp_neighbor_e *neighbor)
-{
- struct wlp_wssid_e *wssid_e, *next;
- u8 keep;
- if (!list_empty(&neighbor->wssid)) {
- list_for_each_entry_safe(wssid_e, next, &neighbor->wssid,
- node) {
- if (wssid_e->info != NULL) {
- keep = wssid_e->info->accept_enroll;
- kfree(wssid_e->info);
- wssid_e->info = NULL;
- if (!keep) {
- list_del(&wssid_e->node);
- kfree(wssid_e);
- }
- }
- }
- }
- if (neighbor->info != NULL) {
- kfree(neighbor->info);
- neighbor->info = NULL;
- }
-}
-
-/*
- * Populate WLP neighborhood cache with neighbor information
- *
- * A new neighbor is found. If it is discoverable then we add it to the
- * neighborhood cache.
- *
- */
-static
-int wlp_add_neighbor(struct wlp *wlp, struct uwb_dev *dev)
-{
- int result = 0;
- int discoverable;
- struct wlp_neighbor_e *neighbor;
-
- /*
- * FIXME:
- * Use contents of WLP IE found in beacon cache to determine if
- * neighbor is discoverable.
- * The device does not support WLP IE yet so this still needs to be
- * done. Until then we assume all devices are discoverable.
- */
- discoverable = 1; /* will be changed when FIXME disappears */
- if (discoverable) {
- /* Add neighbor to cache for discovery */
- neighbor = kzalloc(sizeof(*neighbor), GFP_KERNEL);
- if (neighbor == NULL) {
- dev_err(&dev->dev, "Unable to create memory for "
- "new neighbor. \n");
- result = -ENOMEM;
- goto error_no_mem;
- }
- wlp_neighbor_init(neighbor);
- uwb_dev_get(dev);
- neighbor->uwb_dev = dev;
- list_add(&neighbor->node, &wlp->neighbors);
- }
-error_no_mem:
- return result;
-}
-
-/**
- * Remove one neighbor from cache
- */
-static
-void __wlp_neighbor_release(struct wlp_neighbor_e *neighbor)
-{
- struct wlp_wssid_e *wssid_e, *next_wssid_e;
-
- list_for_each_entry_safe(wssid_e, next_wssid_e,
- &neighbor->wssid, node) {
- list_del(&wssid_e->node);
- kfree(wssid_e);
- }
- uwb_dev_put(neighbor->uwb_dev);
- list_del(&neighbor->node);
- kfree(neighbor);
-}
-
-/**
- * Clear entire neighborhood cache.
- */
-static
-void __wlp_neighbors_release(struct wlp *wlp)
-{
- struct wlp_neighbor_e *neighbor, *next;
- if (list_empty(&wlp->neighbors))
- return;
- list_for_each_entry_safe(neighbor, next, &wlp->neighbors, node) {
- __wlp_neighbor_release(neighbor);
- }
-}
-
-static
-void wlp_neighbors_release(struct wlp *wlp)
-{
- mutex_lock(&wlp->nbmutex);
- __wlp_neighbors_release(wlp);
- mutex_unlock(&wlp->nbmutex);
-}
-
-
-
-/**
- * Send D1 message to neighbor, receive D2 message
- *
- * @neighbor: neighbor to which D1 message will be sent
- * @wss: if not NULL, it is an enrollment request for this WSS
- * @wssid: if wss not NULL, this is the wssid of the WSS in which we
- * want to enroll
- *
- * A D1/D2 exchange is done for one of two reasons: discovery or
- * enrollment. If done for discovery the D1 message is sent to the neighbor
- * and the contents of the D2 response is stored in a temporary cache.
- * If done for enrollment the @wss and @wssid are provided also. In this
- * case the D1 message is sent to the neighbor, the D2 response is parsed
- * for enrollment of the WSS with wssid.
- *
- * &wss->mutex is held
- */
-static
-int wlp_d1d2_exchange(struct wlp *wlp, struct wlp_neighbor_e *neighbor,
- struct wlp_wss *wss, struct wlp_uuid *wssid)
-{
- int result;
- struct device *dev = &wlp->rc->uwb_dev.dev;
- DECLARE_COMPLETION_ONSTACK(completion);
- struct wlp_session session;
- struct sk_buff *skb;
- struct wlp_frame_assoc *resp;
- struct uwb_dev_addr *dev_addr = &neighbor->uwb_dev->dev_addr;
-
- mutex_lock(&wlp->mutex);
- if (!wlp_uuid_is_set(&wlp->uuid)) {
- dev_err(dev, "WLP: UUID is not set. Set via sysfs to "
- "proceed.\n");
- result = -ENXIO;
- goto out;
- }
- /* Send D1 association frame */
- result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_D1);
- if (result < 0) {
- dev_err(dev, "Unable to send D1 frame to neighbor "
- "%02x:%02x (%d)\n", dev_addr->data[1],
- dev_addr->data[0], result);
- goto out;
- }
- /* Create session, wait for response */
- session.exp_message = WLP_ASSOC_D2;
- session.cb = wlp_session_cb;
- session.cb_priv = &completion;
- session.neighbor_addr = *dev_addr;
- BUG_ON(wlp->session != NULL);
- wlp->session = &session;
- /* Wait for D2/F0 frame */
- result = wait_for_completion_interruptible_timeout(&completion,
- WLP_PER_MSG_TIMEOUT * HZ);
- if (result == 0) {
- result = -ETIMEDOUT;
- dev_err(dev, "Timeout while sending D1 to neighbor "
- "%02x:%02x.\n", dev_addr->data[1],
- dev_addr->data[0]);
- goto error_session;
- }
- if (result < 0) {
- dev_err(dev, "Unable to discover/enroll neighbor %02x:%02x.\n",
- dev_addr->data[1], dev_addr->data[0]);
- goto error_session;
- }
- /* Parse message in session->data: it will be either D2 or F0 */
- skb = session.data;
- resp = (void *) skb->data;
-
- if (resp->type == WLP_ASSOC_F0) {
- result = wlp_parse_f0(wlp, skb);
- if (result < 0)
- dev_err(dev, "WLP: Unable to parse F0 from neighbor "
- "%02x:%02x.\n", dev_addr->data[1],
- dev_addr->data[0]);
- result = -EINVAL;
- goto error_resp_parse;
- }
- if (wss == NULL) {
- /* Discovery */
- result = wlp_parse_d2_frame_to_cache(wlp, skb, neighbor);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to parse D2 message from "
- "neighbor %02x:%02x for discovery.\n",
- dev_addr->data[1], dev_addr->data[0]);
- goto error_resp_parse;
- }
- } else {
- /* Enrollment */
- result = wlp_parse_d2_frame_to_enroll(wss, skb, neighbor,
- wssid);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to parse D2 message from "
- "neighbor %02x:%02x for enrollment.\n",
- dev_addr->data[1], dev_addr->data[0]);
- goto error_resp_parse;
- }
- }
-error_resp_parse:
- kfree_skb(skb);
-error_session:
- wlp->session = NULL;
-out:
- mutex_unlock(&wlp->mutex);
- return result;
-}
-
-/**
- * Enroll into WSS of provided WSSID by using neighbor as registrar
- *
- * &wss->mutex is held
- */
-int wlp_enroll_neighbor(struct wlp *wlp, struct wlp_neighbor_e *neighbor,
- struct wlp_wss *wss, struct wlp_uuid *wssid)
-{
- int result = 0;
- struct device *dev = &wlp->rc->uwb_dev.dev;
- char buf[WLP_WSS_UUID_STRSIZE];
- struct uwb_dev_addr *dev_addr = &neighbor->uwb_dev->dev_addr;
-
- wlp_wss_uuid_print(buf, sizeof(buf), wssid);
-
- result = wlp_d1d2_exchange(wlp, neighbor, wss, wssid);
- if (result < 0) {
- dev_err(dev, "WLP: D1/D2 message exchange for enrollment "
- "failed. result = %d \n", result);
- goto out;
- }
- if (wss->state != WLP_WSS_STATE_PART_ENROLLED) {
- dev_err(dev, "WLP: Unable to enroll into WSS %s using "
- "neighbor %02x:%02x. \n", buf,
- dev_addr->data[1], dev_addr->data[0]);
- result = -EINVAL;
- goto out;
- }
- if (wss->secure_status == WLP_WSS_SECURE) {
- dev_err(dev, "FIXME: need to complete secure enrollment.\n");
- result = -EINVAL;
- goto error;
- } else {
- wss->state = WLP_WSS_STATE_ENROLLED;
- dev_dbg(dev, "WLP: Success Enrollment into unsecure WSS "
- "%s using neighbor %02x:%02x. \n",
- buf, dev_addr->data[1], dev_addr->data[0]);
- }
-out:
- return result;
-error:
- wlp_wss_reset(wss);
- return result;
-}
-
-/**
- * Discover WSS information of neighbor's active WSS
- */
-static
-int wlp_discover_neighbor(struct wlp *wlp,
- struct wlp_neighbor_e *neighbor)
-{
- return wlp_d1d2_exchange(wlp, neighbor, NULL, NULL);
-}
-
-
-/**
- * Each neighbor in the neighborhood cache is discoverable. Discover it.
- *
- * Discovery is done through sending of D1 association frame and parsing
- * the D2 association frame response. Only wssid from D2 will be included
- * in neighbor cache, rest is just displayed to user and forgotten.
- *
- * The discovery is not done in parallel. This is simple and enables us to
- * maintain only one association context.
- *
- * The discovery of one neighbor does not affect the other, but if the
- * discovery of a neighbor fails it is removed from the neighborhood cache.
- */
-static
-int wlp_discover_all_neighbors(struct wlp *wlp)
-{
- int result = 0;
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct wlp_neighbor_e *neighbor, *next;
-
- list_for_each_entry_safe(neighbor, next, &wlp->neighbors, node) {
- result = wlp_discover_neighbor(wlp, neighbor);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to discover neighbor "
- "%02x:%02x, removing from neighborhood. \n",
- neighbor->uwb_dev->dev_addr.data[1],
- neighbor->uwb_dev->dev_addr.data[0]);
- __wlp_neighbor_release(neighbor);
- }
- }
- return result;
-}
-
-static int wlp_add_neighbor_helper(struct device *dev, void *priv)
-{
- struct wlp *wlp = priv;
- struct uwb_dev *uwb_dev = to_uwb_dev(dev);
-
- return wlp_add_neighbor(wlp, uwb_dev);
-}
-
-/**
- * Discover WLP neighborhood
- *
- * Will send D1 association frame to all devices in beacon group that have
- * discoverable bit set in WLP IE. D2 frames will be received, information
- * displayed to user in @buf. Partial information (from D2 association
- * frame) will be cached to assist with future association
- * requests.
- *
- * The discovery of the WLP neighborhood is triggered by the user. This
- * should occur infrequently and we thus free current cache and re-allocate
- * memory if needed.
- *
- * If one neighbor fails during initial discovery (determining if it is a
- * neighbor or not), we fail all - note that interaction with neighbor has
- * not occured at this point so if a failure occurs we know something went wrong
- * locally. We thus undo everything.
- */
-ssize_t wlp_discover(struct wlp *wlp)
-{
- int result = 0;
- struct device *dev = &wlp->rc->uwb_dev.dev;
-
- mutex_lock(&wlp->nbmutex);
- /* Clear current neighborhood cache. */
- __wlp_neighbors_release(wlp);
- /* Determine which devices in neighborhood. Repopulate cache. */
- result = uwb_dev_for_each(wlp->rc, wlp_add_neighbor_helper, wlp);
- if (result < 0) {
- /* May have partial neighbor information, release all. */
- __wlp_neighbors_release(wlp);
- goto error_dev_for_each;
- }
- /* Discover the properties of devices in neighborhood. */
- result = wlp_discover_all_neighbors(wlp);
- /* In case of failure we still print our partial results. */
- if (result < 0) {
- dev_err(dev, "Unable to fully discover neighborhood. \n");
- result = 0;
- }
-error_dev_for_each:
- mutex_unlock(&wlp->nbmutex);
- return result;
-}
-
-/**
- * Handle events from UWB stack
- *
- * We handle events conservatively. If a neighbor goes off the air we
- * remove it from the neighborhood. If an association process is in
- * progress this function will block waiting for the nbmutex to become
- * free. The association process will thus be allowed to complete before it
- * is removed.
- */
-static
-void wlp_uwb_notifs_cb(void *_wlp, struct uwb_dev *uwb_dev,
- enum uwb_notifs event)
-{
- struct wlp *wlp = _wlp;
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct wlp_neighbor_e *neighbor, *next;
- int result;
- switch (event) {
- case UWB_NOTIF_ONAIR:
- result = wlp_eda_create_node(&wlp->eda,
- uwb_dev->mac_addr.data,
- &uwb_dev->dev_addr);
- if (result < 0)
- dev_err(dev, "WLP: Unable to add new neighbor "
- "%02x:%02x to EDA cache.\n",
- uwb_dev->dev_addr.data[1],
- uwb_dev->dev_addr.data[0]);
- break;
- case UWB_NOTIF_OFFAIR:
- wlp_eda_rm_node(&wlp->eda, &uwb_dev->dev_addr);
- mutex_lock(&wlp->nbmutex);
- list_for_each_entry_safe(neighbor, next, &wlp->neighbors, node) {
- if (neighbor->uwb_dev == uwb_dev)
- __wlp_neighbor_release(neighbor);
- }
- mutex_unlock(&wlp->nbmutex);
- break;
- default:
- dev_err(dev, "don't know how to handle event %d from uwb\n",
- event);
- }
-}
-
-static void wlp_channel_changed(struct uwb_pal *pal, int channel)
-{
- struct wlp *wlp = container_of(pal, struct wlp, pal);
-
- if (channel < 0)
- netif_carrier_off(wlp->ndev);
- else
- netif_carrier_on(wlp->ndev);
-}
-
-int wlp_setup(struct wlp *wlp, struct uwb_rc *rc, struct net_device *ndev)
-{
- int result;
-
- BUG_ON(wlp->fill_device_info == NULL);
- BUG_ON(wlp->xmit_frame == NULL);
- BUG_ON(wlp->stop_queue == NULL);
- BUG_ON(wlp->start_queue == NULL);
-
- wlp->rc = rc;
- wlp->ndev = ndev;
- wlp_eda_init(&wlp->eda);/* Set up address cache */
- wlp->uwb_notifs_handler.cb = wlp_uwb_notifs_cb;
- wlp->uwb_notifs_handler.data = wlp;
- uwb_notifs_register(rc, &wlp->uwb_notifs_handler);
-
- uwb_pal_init(&wlp->pal);
- wlp->pal.rc = rc;
- wlp->pal.channel_changed = wlp_channel_changed;
- result = uwb_pal_register(&wlp->pal);
- if (result < 0)
- uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler);
-
- return result;
-}
-EXPORT_SYMBOL_GPL(wlp_setup);
-
-void wlp_remove(struct wlp *wlp)
-{
- wlp_neighbors_release(wlp);
- uwb_pal_unregister(&wlp->pal);
- uwb_notifs_deregister(wlp->rc, &wlp->uwb_notifs_handler);
- wlp_eda_release(&wlp->eda);
- mutex_lock(&wlp->mutex);
- if (wlp->dev_info != NULL)
- kfree(wlp->dev_info);
- mutex_unlock(&wlp->mutex);
- wlp->rc = NULL;
-}
-EXPORT_SYMBOL_GPL(wlp_remove);
-
-/**
- * wlp_reset_all - reset the WLP hardware
- * @wlp: the WLP device to reset.
- *
- * This schedules a full hardware reset of the WLP device. The radio
- * controller and any other PALs will also be reset.
- */
-void wlp_reset_all(struct wlp *wlp)
-{
- uwb_rc_reset_all(wlp->rc);
-}
-EXPORT_SYMBOL_GPL(wlp_reset_all);
+++ /dev/null
-/*
- * WiMedia Logical Link Control Protocol (WLP)
- *
- * Copyright (C) 2007 Intel Corporation
- * Reinette Chatre <reinette.chatre@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * Implementation of the WLP association protocol.
- *
- * FIXME: Docs
- *
- * A UWB network interface will configure a WSS through wlp_wss_setup() after
- * the interface has been assigned a MAC address, typically after
- * "ifconfig" has been called. When the interface goes down it should call
- * wlp_wss_remove().
- *
- * When the WSS is ready for use the user interacts via sysfs to create,
- * discover, and activate WSS.
- *
- * wlp_wss_enroll_activate()
- *
- * wlp_wss_create_activate()
- * wlp_wss_set_wssid_hash()
- * wlp_wss_comp_wssid_hash()
- * wlp_wss_sel_bcast_addr()
- * wlp_wss_sysfs_add()
- *
- * Called when no more references to WSS exist:
- * wlp_wss_release()
- * wlp_wss_reset()
- */
-#include <linux/etherdevice.h> /* for is_valid_ether_addr */
-#include <linux/skbuff.h>
-#include <linux/slab.h>
-#include <linux/wlp.h>
-
-#include "wlp-internal.h"
-
-size_t wlp_wss_key_print(char *buf, size_t bufsize, u8 *key)
-{
- size_t result;
-
- result = scnprintf(buf, bufsize,
- "%02x %02x %02x %02x %02x %02x "
- "%02x %02x %02x %02x %02x %02x "
- "%02x %02x %02x %02x",
- key[0], key[1], key[2], key[3],
- key[4], key[5], key[6], key[7],
- key[8], key[9], key[10], key[11],
- key[12], key[13], key[14], key[15]);
- return result;
-}
-
-/**
- * Compute WSSID hash
- * WLP Draft 0.99 [7.2.1]
- *
- * The WSSID hash for a WSSID is the result of an octet-wise exclusive-OR
- * of all octets in the WSSID.
- */
-static
-u8 wlp_wss_comp_wssid_hash(struct wlp_uuid *wssid)
-{
- return wssid->data[0] ^ wssid->data[1] ^ wssid->data[2]
- ^ wssid->data[3] ^ wssid->data[4] ^ wssid->data[5]
- ^ wssid->data[6] ^ wssid->data[7] ^ wssid->data[8]
- ^ wssid->data[9] ^ wssid->data[10] ^ wssid->data[11]
- ^ wssid->data[12] ^ wssid->data[13] ^ wssid->data[14]
- ^ wssid->data[15];
-}
-
-/**
- * Select a multicast EUI-48 for the WSS broadcast address.
- * WLP Draft 0.99 [7.2.1]
- *
- * Selected based on the WiMedia Alliance OUI, 00-13-88, within the WLP
- * range, [01-13-88-00-01-00, 01-13-88-00-01-FF] inclusive.
- *
- * This address is currently hardcoded.
- * FIXME?
- */
-static
-struct uwb_mac_addr wlp_wss_sel_bcast_addr(struct wlp_wss *wss)
-{
- struct uwb_mac_addr bcast = {
- .data = { 0x01, 0x13, 0x88, 0x00, 0x01, 0x00 }
- };
- return bcast;
-}
-
-/**
- * Clear the contents of the WSS structure - all except kobj, mutex, virtual
- *
- * We do not want to reinitialize - the internal kobj should not change as
- * it still points to the parent received during setup. The mutex should
- * remain also. We thus just reset values individually.
- * The virutal address assigned to WSS will remain the same for the
- * lifetime of the WSS. We only reset the fields that can change during its
- * lifetime.
- */
-void wlp_wss_reset(struct wlp_wss *wss)
-{
- memset(&wss->wssid, 0, sizeof(wss->wssid));
- wss->hash = 0;
- memset(&wss->name[0], 0, sizeof(wss->name));
- memset(&wss->bcast, 0, sizeof(wss->bcast));
- wss->secure_status = WLP_WSS_UNSECURE;
- memset(&wss->master_key[0], 0, sizeof(wss->master_key));
- wss->tag = 0;
- wss->state = WLP_WSS_STATE_NONE;
-}
-
-/**
- * Create sysfs infrastructure for WSS
- *
- * The WSS is configured to have the interface as parent (see wlp_wss_setup())
- * a new sysfs directory that includes wssid as its name is created in the
- * interface's sysfs directory. The group of files interacting with WSS are
- * created also.
- */
-static
-int wlp_wss_sysfs_add(struct wlp_wss *wss, char *wssid_str)
-{
- struct wlp *wlp = container_of(wss, struct wlp, wss);
- struct device *dev = &wlp->rc->uwb_dev.dev;
- int result;
-
- result = kobject_set_name(&wss->kobj, "wss-%s", wssid_str);
- if (result < 0)
- return result;
- wss->kobj.ktype = &wss_ktype;
- result = kobject_init_and_add(&wss->kobj,
- &wss_ktype, wss->kobj.parent, "wlp");
- if (result < 0) {
- dev_err(dev, "WLP: Cannot register WSS kobject.\n");
- goto error_kobject_register;
- }
- result = sysfs_create_group(&wss->kobj, &wss_attr_group);
- if (result < 0) {
- dev_err(dev, "WLP: Cannot register WSS attributes: %d\n",
- result);
- goto error_sysfs_create_group;
- }
- return 0;
-error_sysfs_create_group:
-
- kobject_put(&wss->kobj); /* will free name if needed */
- return result;
-error_kobject_register:
- kfree(wss->kobj.name);
- wss->kobj.name = NULL;
- wss->kobj.ktype = NULL;
- return result;
-}
-
-
-/**
- * Release WSS
- *
- * No more references exist to this WSS. We should undo everything that was
- * done in wlp_wss_create_activate() except removing the group. The group
- * is not removed because an object can be unregistered before the group is
- * created. We also undo any additional operations on the WSS after this
- * (addition of members).
- *
- * If memory was allocated for the kobject's name then it will
- * be freed by the kobject system during this time.
- *
- * The EDA cache is removed and reinitialized when the WSS is removed. We
- * thus loose knowledge of members of this WSS at that time and need not do
- * it here.
- */
-void wlp_wss_release(struct kobject *kobj)
-{
- struct wlp_wss *wss = container_of(kobj, struct wlp_wss, kobj);
-
- wlp_wss_reset(wss);
-}
-
-/**
- * Enroll into a WSS using provided neighbor as registrar
- *
- * First search the neighborhood information to learn which neighbor is
- * referred to, next proceed with enrollment.
- *
- * &wss->mutex is held
- */
-static
-int wlp_wss_enroll_target(struct wlp_wss *wss, struct wlp_uuid *wssid,
- struct uwb_dev_addr *dest)
-{
- struct wlp *wlp = container_of(wss, struct wlp, wss);
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct wlp_neighbor_e *neighbor;
- int result = -ENXIO;
- struct uwb_dev_addr *dev_addr;
-
- mutex_lock(&wlp->nbmutex);
- list_for_each_entry(neighbor, &wlp->neighbors, node) {
- dev_addr = &neighbor->uwb_dev->dev_addr;
- if (!memcmp(dest, dev_addr, sizeof(*dest))) {
- result = wlp_enroll_neighbor(wlp, neighbor, wss, wssid);
- break;
- }
- }
- if (result == -ENXIO)
- dev_err(dev, "WLP: Cannot find neighbor %02x:%02x. \n",
- dest->data[1], dest->data[0]);
- mutex_unlock(&wlp->nbmutex);
- return result;
-}
-
-/**
- * Enroll into a WSS previously discovered
- *
- * User provides WSSID of WSS, search for neighbor that has this WSS
- * activated and attempt to enroll.
- *
- * &wss->mutex is held
- */
-static
-int wlp_wss_enroll_discovered(struct wlp_wss *wss, struct wlp_uuid *wssid)
-{
- struct wlp *wlp = container_of(wss, struct wlp, wss);
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct wlp_neighbor_e *neighbor;
- struct wlp_wssid_e *wssid_e;
- char buf[WLP_WSS_UUID_STRSIZE];
- int result = -ENXIO;
-
-
- mutex_lock(&wlp->nbmutex);
- list_for_each_entry(neighbor, &wlp->neighbors, node) {
- list_for_each_entry(wssid_e, &neighbor->wssid, node) {
- if (!memcmp(wssid, &wssid_e->wssid, sizeof(*wssid))) {
- result = wlp_enroll_neighbor(wlp, neighbor,
- wss, wssid);
- if (result == 0) /* enrollment success */
- goto out;
- break;
- }
- }
- }
-out:
- if (result == -ENXIO) {
- wlp_wss_uuid_print(buf, sizeof(buf), wssid);
- dev_err(dev, "WLP: Cannot find WSSID %s in cache. \n", buf);
- }
- mutex_unlock(&wlp->nbmutex);
- return result;
-}
-
-/**
- * Enroll into WSS with provided WSSID, registrar may be provided
- *
- * @wss: out WSS that will be enrolled
- * @wssid: wssid of neighboring WSS that we want to enroll in
- * @devaddr: registrar can be specified, will be broadcast (ff:ff) if any
- * neighbor can be used as registrar.
- *
- * &wss->mutex is held
- */
-static
-int wlp_wss_enroll(struct wlp_wss *wss, struct wlp_uuid *wssid,
- struct uwb_dev_addr *devaddr)
-{
- int result;
- struct wlp *wlp = container_of(wss, struct wlp, wss);
- struct device *dev = &wlp->rc->uwb_dev.dev;
- char buf[WLP_WSS_UUID_STRSIZE];
- struct uwb_dev_addr bcast = {.data = {0xff, 0xff} };
-
- wlp_wss_uuid_print(buf, sizeof(buf), wssid);
-
- if (wss->state != WLP_WSS_STATE_NONE) {
- dev_err(dev, "WLP: Already enrolled in WSS %s.\n", buf);
- result = -EEXIST;
- goto error;
- }
- if (!memcmp(&bcast, devaddr, sizeof(bcast)))
- result = wlp_wss_enroll_discovered(wss, wssid);
- else
- result = wlp_wss_enroll_target(wss, wssid, devaddr);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to enroll into WSS %s, result %d \n",
- buf, result);
- goto error;
- }
- dev_dbg(dev, "Successfully enrolled into WSS %s \n", buf);
- result = wlp_wss_sysfs_add(wss, buf);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to set up sysfs for WSS kobject.\n");
- wlp_wss_reset(wss);
- }
-error:
- return result;
-
-}
-
-/**
- * Activate given WSS
- *
- * Prior to activation a WSS must be enrolled. To activate a WSS a device
- * includes the WSS hash in the WLP IE in its beacon in each superframe.
- * WLP 0.99 [7.2.5].
- *
- * The WSS tag is also computed at this time. We only support one activated
- * WSS so we can use the hash as a tag - there will never be a conflict.
- *
- * We currently only support one activated WSS so only one WSS hash is
- * included in the WLP IE.
- */
-static
-int wlp_wss_activate(struct wlp_wss *wss)
-{
- struct wlp *wlp = container_of(wss, struct wlp, wss);
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct uwb_rc *uwb_rc = wlp->rc;
- int result;
- struct {
- struct wlp_ie wlp_ie;
- u8 hash; /* only include one hash */
- } ie_data;
-
- BUG_ON(wss->state != WLP_WSS_STATE_ENROLLED);
- wss->hash = wlp_wss_comp_wssid_hash(&wss->wssid);
- wss->tag = wss->hash;
- memset(&ie_data, 0, sizeof(ie_data));
- ie_data.wlp_ie.hdr.element_id = UWB_IE_WLP;
- ie_data.wlp_ie.hdr.length = sizeof(ie_data) - sizeof(struct uwb_ie_hdr);
- wlp_ie_set_hash_length(&ie_data.wlp_ie, sizeof(ie_data.hash));
- ie_data.hash = wss->hash;
- result = uwb_rc_ie_add(uwb_rc, &ie_data.wlp_ie.hdr,
- sizeof(ie_data));
- if (result < 0) {
- dev_err(dev, "WLP: Unable to add WLP IE to beacon. "
- "result = %d.\n", result);
- goto error_wlp_ie;
- }
- wss->state = WLP_WSS_STATE_ACTIVE;
- result = 0;
-error_wlp_ie:
- return result;
-}
-
-/**
- * Enroll in and activate WSS identified by provided WSSID
- *
- * The neighborhood cache should contain a list of all neighbors and the
- * WSS they have activated. Based on that cache we search which neighbor we
- * can perform the association process with. The user also has option to
- * specify which neighbor it prefers as registrar.
- * Successful enrollment is followed by activation.
- * Successful activation will create the sysfs directory containing
- * specific information regarding this WSS.
- */
-int wlp_wss_enroll_activate(struct wlp_wss *wss, struct wlp_uuid *wssid,
- struct uwb_dev_addr *devaddr)
-{
- struct wlp *wlp = container_of(wss, struct wlp, wss);
- struct device *dev = &wlp->rc->uwb_dev.dev;
- int result = 0;
- char buf[WLP_WSS_UUID_STRSIZE];
-
- mutex_lock(&wss->mutex);
- result = wlp_wss_enroll(wss, wssid, devaddr);
- if (result < 0) {
- wlp_wss_uuid_print(buf, sizeof(buf), &wss->wssid);
- dev_err(dev, "WLP: Enrollment into WSS %s failed.\n", buf);
- goto error_enroll;
- }
- result = wlp_wss_activate(wss);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to activate WSS. Undoing enrollment "
- "result = %d \n", result);
- /* Undo enrollment */
- wlp_wss_reset(wss);
- goto error_activate;
- }
-error_activate:
-error_enroll:
- mutex_unlock(&wss->mutex);
- return result;
-}
-
-/**
- * Create, enroll, and activate a new WSS
- *
- * @wssid: new wssid provided by user
- * @name: WSS name requested by used.
- * @sec_status: security status requested by user
- *
- * A user requested the creation of a new WSS. All operations are done
- * locally. The new WSS will be stored locally, the hash will be included
- * in the WLP IE, and the sysfs infrastructure for this WSS will be
- * created.
- */
-int wlp_wss_create_activate(struct wlp_wss *wss, struct wlp_uuid *wssid,
- char *name, unsigned sec_status, unsigned accept)
-{
- struct wlp *wlp = container_of(wss, struct wlp, wss);
- struct device *dev = &wlp->rc->uwb_dev.dev;
- int result = 0;
- char buf[WLP_WSS_UUID_STRSIZE];
-
- result = wlp_wss_uuid_print(buf, sizeof(buf), wssid);
-
- if (!mutex_trylock(&wss->mutex)) {
- dev_err(dev, "WLP: WLP association session in progress.\n");
- return -EBUSY;
- }
- if (wss->state != WLP_WSS_STATE_NONE) {
- dev_err(dev, "WLP: WSS already exists. Not creating new.\n");
- result = -EEXIST;
- goto out;
- }
- if (wss->kobj.parent == NULL) {
- dev_err(dev, "WLP: WSS parent not ready. Is network interface "
- "up?\n");
- result = -ENXIO;
- goto out;
- }
- if (sec_status == WLP_WSS_SECURE) {
- dev_err(dev, "WLP: FIXME Creation of secure WSS not "
- "supported yet.\n");
- result = -EINVAL;
- goto out;
- }
- wss->wssid = *wssid;
- memcpy(wss->name, name, sizeof(wss->name));
- wss->bcast = wlp_wss_sel_bcast_addr(wss);
- wss->secure_status = sec_status;
- wss->accept_enroll = accept;
- /*wss->virtual_addr is initialized in call to wlp_wss_setup*/
- /* sysfs infrastructure */
- result = wlp_wss_sysfs_add(wss, buf);
- if (result < 0) {
- dev_err(dev, "Cannot set up sysfs for WSS kobject.\n");
- wlp_wss_reset(wss);
- goto out;
- } else
- result = 0;
- wss->state = WLP_WSS_STATE_ENROLLED;
- result = wlp_wss_activate(wss);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to activate WSS. Undoing "
- "enrollment\n");
- wlp_wss_reset(wss);
- goto out;
- }
- result = 0;
-out:
- mutex_unlock(&wss->mutex);
- return result;
-}
-
-/**
- * Determine if neighbor has WSS activated
- *
- * @returns: 1 if neighbor has WSS activated, zero otherwise
- *
- * This can be done in two ways:
- * - send a C1 frame, parse C2/F0 response
- * - examine the WLP IE sent by the neighbor
- *
- * The WLP IE is not fully supported in hardware so we use the C1/C2 frame
- * exchange to determine if a WSS is activated. Using the WLP IE should be
- * faster and should be used when it becomes possible.
- */
-int wlp_wss_is_active(struct wlp *wlp, struct wlp_wss *wss,
- struct uwb_dev_addr *dev_addr)
-{
- int result = 0;
- struct device *dev = &wlp->rc->uwb_dev.dev;
- DECLARE_COMPLETION_ONSTACK(completion);
- struct wlp_session session;
- struct sk_buff *skb;
- struct wlp_frame_assoc *resp;
- struct wlp_uuid wssid;
-
- mutex_lock(&wlp->mutex);
- /* Send C1 association frame */
- result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_C1);
- if (result < 0) {
- dev_err(dev, "Unable to send C1 frame to neighbor "
- "%02x:%02x (%d)\n", dev_addr->data[1],
- dev_addr->data[0], result);
- result = 0;
- goto out;
- }
- /* Create session, wait for response */
- session.exp_message = WLP_ASSOC_C2;
- session.cb = wlp_session_cb;
- session.cb_priv = &completion;
- session.neighbor_addr = *dev_addr;
- BUG_ON(wlp->session != NULL);
- wlp->session = &session;
- /* Wait for C2/F0 frame */
- result = wait_for_completion_interruptible_timeout(&completion,
- WLP_PER_MSG_TIMEOUT * HZ);
- if (result == 0) {
- dev_err(dev, "Timeout while sending C1 to neighbor "
- "%02x:%02x.\n", dev_addr->data[1],
- dev_addr->data[0]);
- goto out;
- }
- if (result < 0) {
- dev_err(dev, "Unable to send C1 to neighbor %02x:%02x.\n",
- dev_addr->data[1], dev_addr->data[0]);
- result = 0;
- goto out;
- }
- /* Parse message in session->data: it will be either C2 or F0 */
- skb = session.data;
- resp = (void *) skb->data;
- if (resp->type == WLP_ASSOC_F0) {
- result = wlp_parse_f0(wlp, skb);
- if (result < 0)
- dev_err(dev, "WLP: unable to parse incoming F0 "
- "frame from neighbor %02x:%02x.\n",
- dev_addr->data[1], dev_addr->data[0]);
- result = 0;
- goto error_resp_parse;
- }
- /* WLP version and message type fields have already been parsed */
- result = wlp_get_wssid(wlp, (void *)resp + sizeof(*resp), &wssid,
- skb->len - sizeof(*resp));
- if (result < 0) {
- dev_err(dev, "WLP: unable to obtain WSSID from C2 frame.\n");
- result = 0;
- goto error_resp_parse;
- }
- if (!memcmp(&wssid, &wss->wssid, sizeof(wssid)))
- result = 1;
- else {
- dev_err(dev, "WLP: Received a C2 frame without matching "
- "WSSID.\n");
- result = 0;
- }
-error_resp_parse:
- kfree_skb(skb);
-out:
- wlp->session = NULL;
- mutex_unlock(&wlp->mutex);
- return result;
-}
-
-/**
- * Activate connection with neighbor by updating EDA cache
- *
- * @wss: local WSS to which neighbor wants to connect
- * @dev_addr: neighbor's address
- * @wssid: neighbor's WSSID - must be same as our WSS's WSSID
- * @tag: neighbor's WSS tag used to identify frames transmitted by it
- * @virt_addr: neighbor's virtual EUI-48
- */
-static
-int wlp_wss_activate_connection(struct wlp *wlp, struct wlp_wss *wss,
- struct uwb_dev_addr *dev_addr,
- struct wlp_uuid *wssid, u8 *tag,
- struct uwb_mac_addr *virt_addr)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- int result = 0;
-
- if (!memcmp(wssid, &wss->wssid, sizeof(*wssid))) {
- /* Update EDA cache */
- result = wlp_eda_update_node(&wlp->eda, dev_addr, wss,
- (void *) virt_addr->data, *tag,
- WLP_WSS_CONNECTED);
- if (result < 0)
- dev_err(dev, "WLP: Unable to update EDA cache "
- "with new connected neighbor information.\n");
- } else {
- dev_err(dev, "WLP: Neighbor does not have matching WSSID.\n");
- result = -EINVAL;
- }
- return result;
-}
-
-/**
- * Connect to WSS neighbor
- *
- * Use C3/C4 exchange to determine if neighbor has WSS activated and
- * retrieve the WSS tag and virtual EUI-48 of the neighbor.
- */
-static
-int wlp_wss_connect_neighbor(struct wlp *wlp, struct wlp_wss *wss,
- struct uwb_dev_addr *dev_addr)
-{
- int result;
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct wlp_uuid wssid;
- u8 tag;
- struct uwb_mac_addr virt_addr;
- DECLARE_COMPLETION_ONSTACK(completion);
- struct wlp_session session;
- struct wlp_frame_assoc *resp;
- struct sk_buff *skb;
-
- mutex_lock(&wlp->mutex);
- /* Send C3 association frame */
- result = wlp_send_assoc_frame(wlp, wss, dev_addr, WLP_ASSOC_C3);
- if (result < 0) {
- dev_err(dev, "Unable to send C3 frame to neighbor "
- "%02x:%02x (%d)\n", dev_addr->data[1],
- dev_addr->data[0], result);
- goto out;
- }
- /* Create session, wait for response */
- session.exp_message = WLP_ASSOC_C4;
- session.cb = wlp_session_cb;
- session.cb_priv = &completion;
- session.neighbor_addr = *dev_addr;
- BUG_ON(wlp->session != NULL);
- wlp->session = &session;
- /* Wait for C4/F0 frame */
- result = wait_for_completion_interruptible_timeout(&completion,
- WLP_PER_MSG_TIMEOUT * HZ);
- if (result == 0) {
- dev_err(dev, "Timeout while sending C3 to neighbor "
- "%02x:%02x.\n", dev_addr->data[1],
- dev_addr->data[0]);
- result = -ETIMEDOUT;
- goto out;
- }
- if (result < 0) {
- dev_err(dev, "Unable to send C3 to neighbor %02x:%02x.\n",
- dev_addr->data[1], dev_addr->data[0]);
- goto out;
- }
- /* Parse message in session->data: it will be either C4 or F0 */
- skb = session.data;
- resp = (void *) skb->data;
- if (resp->type == WLP_ASSOC_F0) {
- result = wlp_parse_f0(wlp, skb);
- if (result < 0)
- dev_err(dev, "WLP: unable to parse incoming F0 "
- "frame from neighbor %02x:%02x.\n",
- dev_addr->data[1], dev_addr->data[0]);
- result = -EINVAL;
- goto error_resp_parse;
- }
- result = wlp_parse_c3c4_frame(wlp, skb, &wssid, &tag, &virt_addr);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to parse C4 frame from neighbor.\n");
- goto error_resp_parse;
- }
- result = wlp_wss_activate_connection(wlp, wss, dev_addr, &wssid, &tag,
- &virt_addr);
- if (result < 0) {
- dev_err(dev, "WLP: Unable to activate connection to "
- "neighbor %02x:%02x.\n", dev_addr->data[1],
- dev_addr->data[0]);
- goto error_resp_parse;
- }
-error_resp_parse:
- kfree_skb(skb);
-out:
- /* Record that we unsuccessfully tried to connect to this neighbor */
- if (result < 0)
- wlp_eda_update_node_state(&wlp->eda, dev_addr,
- WLP_WSS_CONNECT_FAILED);
- wlp->session = NULL;
- mutex_unlock(&wlp->mutex);
- return result;
-}
-
-/**
- * Connect to neighbor with common WSS, send pending frame
- *
- * This function is scheduled when a frame is destined to a neighbor with
- * which we do not have a connection. A copy of the EDA cache entry is
- * provided - not the actual cache entry (because it is protected by a
- * spinlock).
- *
- * First determine if neighbor has the same WSS activated, connect if it
- * does. The C3/C4 exchange is dual purpose to determine if neighbor has
- * WSS activated and proceed with the connection.
- *
- * The frame that triggered the connection setup is sent after connection
- * setup.
- *
- * network queue is stopped - we need to restart when done
- *
- */
-static
-void wlp_wss_connect_send(struct work_struct *ws)
-{
- struct wlp_assoc_conn_ctx *conn_ctx = container_of(ws,
- struct wlp_assoc_conn_ctx,
- ws);
- struct wlp *wlp = conn_ctx->wlp;
- struct sk_buff *skb = conn_ctx->skb;
- struct wlp_eda_node *eda_entry = &conn_ctx->eda_entry;
- struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
- struct wlp_wss *wss = &wlp->wss;
- int result;
- struct device *dev = &wlp->rc->uwb_dev.dev;
-
- mutex_lock(&wss->mutex);
- if (wss->state < WLP_WSS_STATE_ACTIVE) {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Attempting to connect with "
- "WSS that is not active or connected.\n");
- dev_kfree_skb(skb);
- goto out;
- }
- /* Establish connection - send C3 rcv C4 */
- result = wlp_wss_connect_neighbor(wlp, wss, dev_addr);
- if (result < 0) {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Unable to establish connection "
- "with neighbor %02x:%02x.\n",
- dev_addr->data[1], dev_addr->data[0]);
- dev_kfree_skb(skb);
- goto out;
- }
- /* EDA entry changed, update the local copy being used */
- result = wlp_copy_eda_node(&wlp->eda, dev_addr, eda_entry);
- if (result < 0) {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Cannot find EDA entry for "
- "neighbor %02x:%02x \n",
- dev_addr->data[1], dev_addr->data[0]);
- }
- result = wlp_wss_prep_hdr(wlp, eda_entry, skb);
- if (result < 0) {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Unable to prepare frame header for "
- "transmission (neighbor %02x:%02x). \n",
- dev_addr->data[1], dev_addr->data[0]);
- dev_kfree_skb(skb);
- goto out;
- }
- BUG_ON(wlp->xmit_frame == NULL);
- result = wlp->xmit_frame(wlp, skb, dev_addr);
- if (result < 0) {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Unable to transmit frame: %d\n",
- result);
- if (result == -ENXIO)
- dev_err(dev, "WLP: Is network interface up? \n");
- /* We could try again ... */
- dev_kfree_skb(skb);/*we need to free if tx fails */
- }
-out:
- kfree(conn_ctx);
- BUG_ON(wlp->start_queue == NULL);
- wlp->start_queue(wlp);
- mutex_unlock(&wss->mutex);
-}
-
-/**
- * Add WLP header to outgoing skb
- *
- * @eda_entry: pointer to neighbor's entry in the EDA cache
- * @_skb: skb containing data destined to the neighbor
- */
-int wlp_wss_prep_hdr(struct wlp *wlp, struct wlp_eda_node *eda_entry,
- void *_skb)
-{
- struct device *dev = &wlp->rc->uwb_dev.dev;
- int result = 0;
- unsigned char *eth_addr = eda_entry->eth_addr;
- struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
- struct sk_buff *skb = _skb;
- struct wlp_frame_std_abbrv_hdr *std_hdr;
-
- if (eda_entry->state == WLP_WSS_CONNECTED) {
- /* Add WLP header */
- BUG_ON(skb_headroom(skb) < sizeof(*std_hdr));
- std_hdr = (void *) __skb_push(skb, sizeof(*std_hdr));
- std_hdr->hdr.mux_hdr = cpu_to_le16(WLP_PROTOCOL_ID);
- std_hdr->hdr.type = WLP_FRAME_STANDARD;
- std_hdr->tag = eda_entry->wss->tag;
- } else {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Destination neighbor (Ethernet: "
- "%pM, Dev: %02x:%02x) is not connected.\n",
- eth_addr, dev_addr->data[1], dev_addr->data[0]);
- result = -EINVAL;
- }
- return result;
-}
-
-
-/**
- * Prepare skb for neighbor: connect if not already and prep WLP header
- *
- * This function is called in interrupt context, but it needs to sleep. We
- * temporarily stop the net queue to establish the WLP connection.
- * Setup of the WLP connection and restart of queue is scheduled
- * on the default work queue.
- *
- * run with eda->lock held (spinlock)
- */
-int wlp_wss_connect_prep(struct wlp *wlp, struct wlp_eda_node *eda_entry,
- void *_skb)
-{
- int result = 0;
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct sk_buff *skb = _skb;
- struct wlp_assoc_conn_ctx *conn_ctx;
-
- if (eda_entry->state == WLP_WSS_UNCONNECTED) {
- /* We don't want any more packets while we set up connection */
- BUG_ON(wlp->stop_queue == NULL);
- wlp->stop_queue(wlp);
- conn_ctx = kmalloc(sizeof(*conn_ctx), GFP_ATOMIC);
- if (conn_ctx == NULL) {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Unable to allocate memory "
- "for connection handling.\n");
- result = -ENOMEM;
- goto out;
- }
- conn_ctx->wlp = wlp;
- conn_ctx->skb = skb;
- conn_ctx->eda_entry = *eda_entry;
- INIT_WORK(&conn_ctx->ws, wlp_wss_connect_send);
- schedule_work(&conn_ctx->ws);
- result = 1;
- } else if (eda_entry->state == WLP_WSS_CONNECT_FAILED) {
- /* Previous connection attempts failed, don't retry - see
- * conditions for connection in WLP 0.99 [7.6.2] */
- if (printk_ratelimit())
- dev_err(dev, "Could not connect to neighbor "
- "previously. Not retrying. \n");
- result = -ENONET;
- goto out;
- } else /* eda_entry->state == WLP_WSS_CONNECTED */
- result = wlp_wss_prep_hdr(wlp, eda_entry, skb);
-out:
- return result;
-}
-
-/**
- * Emulate broadcast: copy skb, send copy to neighbor (connect if not already)
- *
- * We need to copy skbs in the case where we emulate broadcast through
- * unicast. We copy instead of clone because we are modifying the data of
- * the frame after copying ... clones share data so we cannot emulate
- * broadcast using clones.
- *
- * run with eda->lock held (spinlock)
- */
-int wlp_wss_send_copy(struct wlp *wlp, struct wlp_eda_node *eda_entry,
- void *_skb)
-{
- int result = -ENOMEM;
- struct device *dev = &wlp->rc->uwb_dev.dev;
- struct sk_buff *skb = _skb;
- struct sk_buff *copy;
- struct uwb_dev_addr *dev_addr = &eda_entry->dev_addr;
-
- copy = skb_copy(skb, GFP_ATOMIC);
- if (copy == NULL) {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Unable to copy skb for "
- "transmission.\n");
- goto out;
- }
- result = wlp_wss_connect_prep(wlp, eda_entry, copy);
- if (result < 0) {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Unable to connect/send skb "
- "to neighbor.\n");
- dev_kfree_skb_irq(copy);
- goto out;
- } else if (result == 1)
- /* Frame will be transmitted separately */
- goto out;
- BUG_ON(wlp->xmit_frame == NULL);
- result = wlp->xmit_frame(wlp, copy, dev_addr);
- if (result < 0) {
- if (printk_ratelimit())
- dev_err(dev, "WLP: Unable to transmit frame: %d\n",
- result);
- if ((result == -ENXIO) && printk_ratelimit())
- dev_err(dev, "WLP: Is network interface up? \n");
- /* We could try again ... */
- dev_kfree_skb_irq(copy);/*we need to free if tx fails */
- }
-out:
- return result;
-}
-
-
-/**
- * Setup WSS
- *
- * Should be called by network driver after the interface has been given a
- * MAC address.
- */
-int wlp_wss_setup(struct net_device *net_dev, struct wlp_wss *wss)
-{
- struct wlp *wlp = container_of(wss, struct wlp, wss);
- struct device *dev = &wlp->rc->uwb_dev.dev;
- int result = 0;
-
- mutex_lock(&wss->mutex);
- wss->kobj.parent = &net_dev->dev.kobj;
- if (!is_valid_ether_addr(net_dev->dev_addr)) {
- dev_err(dev, "WLP: Invalid MAC address. Cannot use for"
- "virtual.\n");
- result = -EINVAL;
- goto out;
- }
- memcpy(wss->virtual_addr.data, net_dev->dev_addr,
- sizeof(wss->virtual_addr.data));
-out:
- mutex_unlock(&wss->mutex);
- return result;
-}
-EXPORT_SYMBOL_GPL(wlp_wss_setup);
-
-/**
- * Remove WSS
- *
- * Called by client that configured WSS through wlp_wss_setup(). This
- * function is called when client no longer needs WSS, eg. client shuts
- * down.
- *
- * We remove the WLP IE from the beacon before initiating local cleanup.
- */
-void wlp_wss_remove(struct wlp_wss *wss)
-{
- struct wlp *wlp = container_of(wss, struct wlp, wss);
-
- mutex_lock(&wss->mutex);
- if (wss->state == WLP_WSS_STATE_ACTIVE)
- uwb_rc_ie_rm(wlp->rc, UWB_IE_WLP);
- if (wss->state != WLP_WSS_STATE_NONE) {
- sysfs_remove_group(&wss->kobj, &wss_attr_group);
- kobject_put(&wss->kobj);
- }
- wss->kobj.parent = NULL;
- memset(&wss->virtual_addr, 0, sizeof(wss->virtual_addr));
- /* Cleanup EDA cache */
- wlp_eda_release(&wlp->eda);
- wlp_eda_init(&wlp->eda);
- mutex_unlock(&wss->mutex);
-}
-EXPORT_SYMBOL_GPL(wlp_wss_remove);
+++ /dev/null
-/*
- * WiMedia Logical Link Control Protocol (WLP)
- *
- * Copyright (C) 2005-2006 Intel Corporation
- * Reinette Chatre <reinette.chatre@intel.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License version
- * 2 as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- * 02110-1301, USA.
- *
- *
- * FIXME: docs
- *
- * - Does not (yet) include support for WLP control frames
- * WLP Draft 0.99 [6.5].
- *
- * A visual representation of the data structures.
- *
- * wssidB wssidB
- * ^ ^
- * | |
- * wssidA wssidA
- * wlp interface { ^ ^
- * ... | |
- * ... ... wssid wssid ...
- * wlp --- ... | |
- * }; neighbors --> neighbA --> neighbB
- * ...
- * wss
- * ...
- * eda cache --> neighborA --> neighborB --> neighborC ...
- */
-
-#ifndef __LINUX__WLP_H_
-#define __LINUX__WLP_H_
-
-#include <linux/netdevice.h>
-#include <linux/skbuff.h>
-#include <linux/list.h>
-#include <linux/uwb.h>
-
-/**
- * WLP Protocol ID
- * WLP Draft 0.99 [6.2]
- *
- * The MUX header for all WLP frames
- */
-#define WLP_PROTOCOL_ID 0x0100
-
-/**
- * WLP Version
- * WLP version placed in the association frames (WLP 0.99 [6.6])
- */
-#define WLP_VERSION 0x10
-
-/**
- * Bytes needed to print UUID as string
- */
-#define WLP_WSS_UUID_STRSIZE 48
-
-/**
- * Bytes needed to print nonce as string
- */
-#define WLP_WSS_NONCE_STRSIZE 48
-
-
-/**
- * Size used for WLP name size
- *
- * The WSS name is set to 65 bytes, 1 byte larger than the maximum
- * allowed by the WLP spec. This is to have a null terminated string
- * for display to the user. A maximum of 64 bytes will still be used
- * when placing the WSS name field in association frames.
- */
-#define WLP_WSS_NAME_SIZE 65
-
-/**
- * Number of bytes added by WLP to data frame
- *
- * A data frame transmitted from a host will be placed in a Standard or
- * Abbreviated WLP frame. These have an extra 4 bytes of header (struct
- * wlp_frame_std_abbrv_hdr).
- * When the stack sends this data frame for transmission it needs to ensure
- * there is enough headroom for this header.
- */
-#define WLP_DATA_HLEN 4
-
-/**
- * State of device regarding WLP Service Set
- *
- * WLP_WSS_STATE_NONE: the host does not participate in any WSS
- * WLP_WSS_STATE_PART_ENROLLED: used as part of the enrollment sequence
- * ("Partial Enroll"). This state is used to
- * indicate the first part of enrollment that is
- * unsecure. If the WSS is unsecure then the
- * state will promptly go to WLP_WSS_STATE_ENROLLED,
- * if the WSS is not secure then the enrollment
- * procedure is a few more steps before we are
- * enrolled.
- * WLP_WSS_STATE_ENROLLED: the host is enrolled in a WSS
- * WLP_WSS_STATE_ACTIVE: WSS is activated
- * WLP_WSS_STATE_CONNECTED: host is connected to neighbor in WSS
- *
- */
-enum wlp_wss_state {
- WLP_WSS_STATE_NONE = 0,
- WLP_WSS_STATE_PART_ENROLLED,
- WLP_WSS_STATE_ENROLLED,
- WLP_WSS_STATE_ACTIVE,
- WLP_WSS_STATE_CONNECTED,
-};
-
-/**
- * WSS Secure status
- * WLP 0.99 Table 6
- *
- * Set to one if the WSS is secure, zero if it is not secure
- */
-enum wlp_wss_sec_status {
- WLP_WSS_UNSECURE = 0,
- WLP_WSS_SECURE,
-};
-
-/**
- * WLP frame type
- * WLP Draft 0.99 [6.2 Table 1]
- */
-enum wlp_frame_type {
- WLP_FRAME_STANDARD = 0,
- WLP_FRAME_ABBREVIATED,
- WLP_FRAME_CONTROL,
- WLP_FRAME_ASSOCIATION,
-};
-
-/**
- * WLP Association Message Type
- * WLP Draft 0.99 [6.6.1.2 Table 8]
- */
-enum wlp_assoc_type {
- WLP_ASSOC_D1 = 2,
- WLP_ASSOC_D2 = 3,
- WLP_ASSOC_M1 = 4,
- WLP_ASSOC_M2 = 5,
- WLP_ASSOC_M3 = 7,
- WLP_ASSOC_M4 = 8,
- WLP_ASSOC_M5 = 9,
- WLP_ASSOC_M6 = 10,
- WLP_ASSOC_M7 = 11,
- WLP_ASSOC_M8 = 12,
- WLP_ASSOC_F0 = 14,
- WLP_ASSOC_E1 = 32,
- WLP_ASSOC_E2 = 33,
- WLP_ASSOC_C1 = 34,
- WLP_ASSOC_C2 = 35,
- WLP_ASSOC_C3 = 36,
- WLP_ASSOC_C4 = 37,
-};
-
-/**
- * WLP Attribute Type
- * WLP Draft 0.99 [6.6.1 Table 6]
- */
-enum wlp_attr_type {
- WLP_ATTR_AUTH = 0x1005, /* Authenticator */
- WLP_ATTR_DEV_NAME = 0x1011, /* Device Name */
- WLP_ATTR_DEV_PWD_ID = 0x1012, /* Device Password ID */
- WLP_ATTR_E_HASH1 = 0x1014, /* E-Hash1 */
- WLP_ATTR_E_HASH2 = 0x1015, /* E-Hash2 */
- WLP_ATTR_E_SNONCE1 = 0x1016, /* E-SNonce1 */
- WLP_ATTR_E_SNONCE2 = 0x1017, /* E-SNonce2 */
- WLP_ATTR_ENCR_SET = 0x1018, /* Encrypted Settings */
- WLP_ATTR_ENRL_NONCE = 0x101A, /* Enrollee Nonce */
- WLP_ATTR_KEYWRAP_AUTH = 0x101E, /* Key Wrap Authenticator */
- WLP_ATTR_MANUF = 0x1021, /* Manufacturer */
- WLP_ATTR_MSG_TYPE = 0x1022, /* Message Type */
- WLP_ATTR_MODEL_NAME = 0x1023, /* Model Name */
- WLP_ATTR_MODEL_NR = 0x1024, /* Model Number */
- WLP_ATTR_PUB_KEY = 0x1032, /* Public Key */
- WLP_ATTR_REG_NONCE = 0x1039, /* Registrar Nonce */
- WLP_ATTR_R_HASH1 = 0x103D, /* R-Hash1 */
- WLP_ATTR_R_HASH2 = 0x103E, /* R-Hash2 */
- WLP_ATTR_R_SNONCE1 = 0x103F, /* R-SNonce1 */
- WLP_ATTR_R_SNONCE2 = 0x1040, /* R-SNonce2 */
- WLP_ATTR_SERIAL = 0x1042, /* Serial number */
- WLP_ATTR_UUID_E = 0x1047, /* UUID-E */
- WLP_ATTR_UUID_R = 0x1048, /* UUID-R */
- WLP_ATTR_PRI_DEV_TYPE = 0x1054, /* Primary Device Type */
- WLP_ATTR_SEC_DEV_TYPE = 0x1055, /* Secondary Device Type */
- WLP_ATTR_PORT_DEV = 0x1056, /* Portable Device */
- WLP_ATTR_APP_EXT = 0x1058, /* Application Extension */
- WLP_ATTR_WLP_VER = 0x2000, /* WLP Version */
- WLP_ATTR_WSSID = 0x2001, /* WSSID */
- WLP_ATTR_WSS_NAME = 0x2002, /* WSS Name */
- WLP_ATTR_WSS_SEC_STAT = 0x2003, /* WSS Secure Status */
- WLP_ATTR_WSS_BCAST = 0x2004, /* WSS Broadcast Address */
- WLP_ATTR_WSS_M_KEY = 0x2005, /* WSS Master Key */
- WLP_ATTR_ACC_ENRL = 0x2006, /* Accepting Enrollment */
- WLP_ATTR_WSS_INFO = 0x2007, /* WSS Information */
- WLP_ATTR_WSS_SEL_MTHD = 0x2008, /* WSS Selection Method */
- WLP_ATTR_ASSC_MTHD_LIST = 0x2009, /* Association Methods List */
- WLP_ATTR_SEL_ASSC_MTHD = 0x200A, /* Selected Association Method */
- WLP_ATTR_ENRL_HASH_COMM = 0x200B, /* Enrollee Hash Commitment */
- WLP_ATTR_WSS_TAG = 0x200C, /* WSS Tag */
- WLP_ATTR_WSS_VIRT = 0x200D, /* WSS Virtual EUI-48 */
- WLP_ATTR_WLP_ASSC_ERR = 0x200E, /* WLP Association Error */
- WLP_ATTR_VNDR_EXT = 0x200F, /* Vendor Extension */
-};
-
-/**
- * WLP Category ID of primary/secondary device
- * WLP Draft 0.99 [6.6.1.8 Table 12]
- */
-enum wlp_dev_category_id {
- WLP_DEV_CAT_COMPUTER = 1,
- WLP_DEV_CAT_INPUT,
- WLP_DEV_CAT_PRINT_SCAN_FAX_COPIER,
- WLP_DEV_CAT_CAMERA,
- WLP_DEV_CAT_STORAGE,
- WLP_DEV_CAT_INFRASTRUCTURE,
- WLP_DEV_CAT_DISPLAY,
- WLP_DEV_CAT_MULTIM,
- WLP_DEV_CAT_GAMING,
- WLP_DEV_CAT_TELEPHONE,
- WLP_DEV_CAT_OTHER = 65535,
-};
-
-/**
- * WLP WSS selection method
- * WLP Draft 0.99 [6.6.1.6 Table 10]
- */
-enum wlp_wss_sel_mthd {
- WLP_WSS_ENRL_SELECT = 1, /* Enrollee selects */
- WLP_WSS_REG_SELECT, /* Registrar selects */
-};
-
-/**
- * WLP association error values
- * WLP Draft 0.99 [6.6.1.5 Table 9]
- */
-enum wlp_assc_error {
- WLP_ASSOC_ERROR_NONE,
- WLP_ASSOC_ERROR_AUTH, /* Authenticator Failure */
- WLP_ASSOC_ERROR_ROGUE, /* Rogue activity suspected */
- WLP_ASSOC_ERROR_BUSY, /* Device busy */
- WLP_ASSOC_ERROR_LOCK, /* Setup Locked */
- WLP_ASSOC_ERROR_NOT_READY, /* Registrar not ready */
- WLP_ASSOC_ERROR_INV, /* Invalid WSS selection */
- WLP_ASSOC_ERROR_MSG_TIME, /* Message timeout */
- WLP_ASSOC_ERROR_ENR_TIME, /* Enrollment session timeout */
- WLP_ASSOC_ERROR_PW, /* Device password invalid */
- WLP_ASSOC_ERROR_VER, /* Unsupported version */
- WLP_ASSOC_ERROR_INT, /* Internal error */
- WLP_ASSOC_ERROR_UNDEF, /* Undefined error */
- WLP_ASSOC_ERROR_NUM, /* Numeric comparison failure */
- WLP_ASSOC_ERROR_WAIT, /* Waiting for user input */
-};
-
-/**
- * WLP Parameters
- * WLP 0.99 [7.7]
- */
-enum wlp_parameters {
- WLP_PER_MSG_TIMEOUT = 15, /* Seconds to wait for response to
- association message. */
-};
-
-/**
- * WLP IE
- *
- * The WLP IE should be included in beacons by all devices.
- *
- * The driver can set only a few of the fields in this information element,
- * most fields are managed by the device self. When the driver needs to set
- * a field it will only provide values for the fields of interest, the rest
- * will be filled with zeroes. The fields of interest are:
- *
- * Element ID
- * Length
- * Capabilities (only to include WSSID Hash list length)
- * WSSID Hash List fields
- *
- * WLP 0.99 [6.7]
- *
- * Only the fields that will be used are detailed in this structure, rest
- * are not detailed or marked as "notused".
- */
-struct wlp_ie {
- struct uwb_ie_hdr hdr;
- __le16 capabilities;
- __le16 cycle_param;
- __le16 acw_anchor_addr;
- u8 wssid_hash_list[];
-} __packed;
-
-static inline int wlp_ie_hash_length(struct wlp_ie *ie)
-{
- return (le16_to_cpu(ie->capabilities) >> 12) & 0xf;
-}
-
-static inline void wlp_ie_set_hash_length(struct wlp_ie *ie, int hash_length)
-{
- u16 caps = le16_to_cpu(ie->capabilities);
- caps = (caps & ~(0xf << 12)) | (hash_length << 12);
- ie->capabilities = cpu_to_le16(caps);
-}
-
-/**
- * WLP nonce
- * WLP Draft 0.99 [6.6.1 Table 6]
- *
- * A 128-bit random number often used (E-SNonce1, E-SNonce2, Enrollee
- * Nonce, Registrar Nonce, R-SNonce1, R-SNonce2). It is passed to HW so
- * it is packed.
- */
-struct wlp_nonce {
- u8 data[16];
-} __packed;
-
-/**
- * WLP UUID
- * WLP Draft 0.99 [6.6.1 Table 6]
- *
- * Universally Unique Identifier (UUID) encoded as an octet string in the
- * order the octets are shown in string representation in RFC4122. A UUID
- * is often used (UUID-E, UUID-R, WSSID). It is passed to HW so it is packed.
- */
-struct wlp_uuid {
- u8 data[16];
-} __packed;
-
-
-/**
- * Primary and secondary device type attributes
- * WLP Draft 0.99 [6.6.1.8]
- */
-struct wlp_dev_type {
- enum wlp_dev_category_id category:16;
- u8 OUI[3];
- u8 OUIsubdiv;
- __le16 subID;
-} __packed;
-
-/**
- * WLP frame header
- * WLP Draft 0.99 [6.2]
- */
-struct wlp_frame_hdr {
- __le16 mux_hdr; /* WLP_PROTOCOL_ID */
- enum wlp_frame_type type:8;
-} __packed;
-
-/**
- * WLP attribute field header
- * WLP Draft 0.99 [6.6.1]
- *
- * Header of each attribute found in an association frame
- */
-struct wlp_attr_hdr {
- __le16 type;
- __le16 length;
-} __packed;
-
-/**
- * Device information commonly used together
- *
- * Each of these device information elements has a specified range in which it
- * should fit (WLP 0.99 [Table 6]). This range provided in the spec does not
- * include the termination null '\0' character (when used in the
- * association protocol the attribute fields are accompanied
- * with a "length" field so the full range from the spec can be used for
- * the value). We thus allocate an extra byte to be able to store a string
- * of max length with a terminating '\0'.
- */
-struct wlp_device_info {
- char name[33];
- char model_name[33];
- char manufacturer[65];
- char model_nr[33];
- char serial[33];
- struct wlp_dev_type prim_dev_type;
-};
-
-/**
- * Macros for the WLP attributes
- *
- * There are quite a few attributes (total is 43). The attribute layout can be
- * in one of three categories: one value, an array, an enum forced to 8 bits.
- * These macros help with their definitions.
- */
-#define wlp_attr(type, name) \
-struct wlp_attr_##name { \
- struct wlp_attr_hdr hdr; \
- type name; \
-} __packed;
-
-#define wlp_attr_array(type, name) \
-struct wlp_attr_##name { \
- struct wlp_attr_hdr hdr; \
- type name[]; \
-} __packed;
-
-/**
- * WLP association attribute fields
- * WLP Draft 0.99 [6.6.1 Table 6]
- *
- * Attributes appear in same order as the Table in the spec
- * FIXME Does not define all attributes yet
- */
-
-/* Device name: Friendly name of sending device */
-wlp_attr_array(u8, dev_name)
-
-/* Enrollee Nonce: Random number generated by enrollee for an enrollment
- * session */
-wlp_attr(struct wlp_nonce, enonce)
-
-/* Manufacturer name: Name of manufacturer of the sending device */
-wlp_attr_array(u8, manufacturer)
-
-/* WLP Message Type */
-wlp_attr(u8, msg_type)
-
-/* WLP Model name: Model name of sending device */
-wlp_attr_array(u8, model_name)
-
-/* WLP Model number: Model number of sending device */
-wlp_attr_array(u8, model_nr)
-
-/* Registrar Nonce: Random number generated by registrar for an enrollment
- * session */
-wlp_attr(struct wlp_nonce, rnonce)
-
-/* Serial number of device */
-wlp_attr_array(u8, serial)
-
-/* UUID of enrollee */
-wlp_attr(struct wlp_uuid, uuid_e)
-
-/* UUID of registrar */
-wlp_attr(struct wlp_uuid, uuid_r)
-
-/* WLP Primary device type */
-wlp_attr(struct wlp_dev_type, prim_dev_type)
-
-/* WLP Secondary device type */
-wlp_attr(struct wlp_dev_type, sec_dev_type)
-
-/* WLP protocol version */
-wlp_attr(u8, version)
-
-/* WLP service set identifier */
-wlp_attr(struct wlp_uuid, wssid)
-
-/* WLP WSS name */
-wlp_attr_array(u8, wss_name)
-
-/* WLP WSS Secure Status */
-wlp_attr(u8, wss_sec_status)
-
-/* WSS Broadcast Address */
-wlp_attr(struct uwb_mac_addr, wss_bcast)
-
-/* WLP Accepting Enrollment */
-wlp_attr(u8, accept_enrl)
-
-/**
- * WSS information attributes
- * WLP Draft 0.99 [6.6.3 Table 15]
- */
-struct wlp_wss_info {
- struct wlp_attr_wssid wssid;
- struct wlp_attr_wss_name name;
- struct wlp_attr_accept_enrl accept;
- struct wlp_attr_wss_sec_status sec_stat;
- struct wlp_attr_wss_bcast bcast;
-} __packed;
-
-/* WLP WSS Information */
-wlp_attr_array(struct wlp_wss_info, wss_info)
-
-/* WLP WSS Selection method */
-wlp_attr(u8, wss_sel_mthd)
-
-/* WLP WSS tag */
-wlp_attr(u8, wss_tag)
-
-/* WSS Virtual Address */
-wlp_attr(struct uwb_mac_addr, wss_virt)
-
-/* WLP association error */
-wlp_attr(u8, wlp_assc_err)
-
-/**
- * WLP standard and abbreviated frames
- *
- * WLP Draft 0.99 [6.3] and [6.4]
- *
- * The difference between the WLP standard frame and the WLP
- * abbreviated frame is that the standard frame includes the src
- * and dest addresses from the Ethernet header, the abbreviated frame does
- * not.
- * The src/dest (as well as the type/length and client data) are already
- * defined as part of the Ethernet header, we do not do this here.
- * From this perspective the standard and abbreviated frames appear the
- * same - they will be treated differently though.
- *
- * The size of this header is also captured in WLP_DATA_HLEN to enable
- * interfaces to prepare their headroom.
- */
-struct wlp_frame_std_abbrv_hdr {
- struct wlp_frame_hdr hdr;
- u8 tag;
-} __packed;
-
-/**
- * WLP association frames
- *
- * WLP Draft 0.99 [6.6]
- */
-struct wlp_frame_assoc {
- struct wlp_frame_hdr hdr;
- enum wlp_assoc_type type:8;
- struct wlp_attr_version version;
- struct wlp_attr_msg_type msg_type;
- u8 attr[];
-} __packed;
-
-/* Ethernet to dev address mapping */
-struct wlp_eda {
- spinlock_t lock;
- struct list_head cache; /* Eth<->Dev Addr cache */
-};
-
-/**
- * WSS information temporary storage
- *
- * This information is only stored temporarily during discovery. It should
- * not be stored unless the device is enrolled in the advertised WSS. This
- * is done mainly because we follow the letter of the spec in this regard.
- * See WLP 0.99 [7.2.3].
- * When the device does become enrolled in a WSS the WSS information will
- * be stored as part of the more comprehensive struct wlp_wss.
- */
-struct wlp_wss_tmp_info {
- char name[WLP_WSS_NAME_SIZE];
- u8 accept_enroll;
- u8 sec_status;
- struct uwb_mac_addr bcast;
-};
-
-struct wlp_wssid_e {
- struct list_head node;
- struct wlp_uuid wssid;
- struct wlp_wss_tmp_info *info;
-};
-
-/**
- * A cache entry of WLP neighborhood
- *
- * @node: head of list is wlp->neighbors
- * @wssid: list of wssids of this neighbor, element is wlp_wssid_e
- * @info: temporary storage for information learned during discovery. This
- * storage is used together with the wssid_e temporary storage
- * during discovery.
- */
-struct wlp_neighbor_e {
- struct list_head node;
- struct wlp_uuid uuid;
- struct uwb_dev *uwb_dev;
- struct list_head wssid; /* Elements are wlp_wssid_e */
- struct wlp_device_info *info;
-};
-
-struct wlp;
-/**
- * Information for an association session in progress.
- *
- * @exp_message: The type of the expected message. Both this message and a
- * F0 message (which can be sent in response to any
- * association frame) will be accepted as a valid message for
- * this session.
- * @cb: The function that will be called upon receipt of this
- * message.
- * @cb_priv: Private data of callback
- * @data: Data used in association process (always a sk_buff?)
- * @neighbor: Address of neighbor with which association session is in
- * progress.
- */
-struct wlp_session {
- enum wlp_assoc_type exp_message;
- void (*cb)(struct wlp *);
- void *cb_priv;
- void *data;
- struct uwb_dev_addr neighbor_addr;
-};
-
-/**
- * WLP Service Set
- *
- * @mutex: used to protect entire WSS structure.
- *
- * @name: The WSS name is set to 65 bytes, 1 byte larger than the maximum
- * allowed by the WLP spec. This is to have a null terminated string
- * for display to the user. A maximum of 64 bytes will still be used
- * when placing the WSS name field in association frames.
- *
- * @accept_enroll: Accepting enrollment: Set to one if registrar is
- * accepting enrollment in WSS, or zero otherwise.
- *
- * Global and local information for each WSS in which we are enrolled.
- * WLP 0.99 Section 7.2.1 and Section 7.2.2
- */
-struct wlp_wss {
- struct mutex mutex;
- struct kobject kobj;
- /* Global properties. */
- struct wlp_uuid wssid;
- u8 hash;
- char name[WLP_WSS_NAME_SIZE];
- struct uwb_mac_addr bcast;
- u8 secure_status:1;
- u8 master_key[16];
- /* Local properties. */
- u8 tag;
- struct uwb_mac_addr virtual_addr;
- /* Extra */
- u8 accept_enroll:1;
- enum wlp_wss_state state;
-};
-
-/**
- * WLP main structure
- * @mutex: protect changes to WLP structure. We only allow changes to the
- * uuid, so currently this mutex only protects this field.
- */
-struct wlp {
- struct mutex mutex;
- struct uwb_rc *rc; /* UWB radio controller */
- struct net_device *ndev;
- struct uwb_pal pal;
- struct wlp_eda eda;
- struct wlp_uuid uuid;
- struct wlp_session *session;
- struct wlp_wss wss;
- struct mutex nbmutex; /* Neighbor mutex protects neighbors list */
- struct list_head neighbors; /* Elements are wlp_neighbor_e */
- struct uwb_notifs_handler uwb_notifs_handler;
- struct wlp_device_info *dev_info;
- void (*fill_device_info)(struct wlp *wlp, struct wlp_device_info *info);
- int (*xmit_frame)(struct wlp *, struct sk_buff *,
- struct uwb_dev_addr *);
- void (*stop_queue)(struct wlp *);
- void (*start_queue)(struct wlp *);
-};
-
-/* sysfs */
-
-
-struct wlp_wss_attribute {
- struct attribute attr;
- ssize_t (*show)(struct wlp_wss *wss, char *buf);
- ssize_t (*store)(struct wlp_wss *wss, const char *buf, size_t count);
-};
-
-#define WSS_ATTR(_name, _mode, _show, _store) \
-static struct wlp_wss_attribute wss_attr_##_name = __ATTR(_name, _mode, \
- _show, _store)
-
-extern int wlp_setup(struct wlp *, struct uwb_rc *, struct net_device *ndev);
-extern void wlp_remove(struct wlp *);
-extern ssize_t wlp_neighborhood_show(struct wlp *, char *);
-extern int wlp_wss_setup(struct net_device *, struct wlp_wss *);
-extern void wlp_wss_remove(struct wlp_wss *);
-extern ssize_t wlp_wss_activate_show(struct wlp_wss *, char *);
-extern ssize_t wlp_wss_activate_store(struct wlp_wss *, const char *, size_t);
-extern ssize_t wlp_eda_show(struct wlp *, char *);
-extern ssize_t wlp_eda_store(struct wlp *, const char *, size_t);
-extern ssize_t wlp_uuid_show(struct wlp *, char *);
-extern ssize_t wlp_uuid_store(struct wlp *, const char *, size_t);
-extern ssize_t wlp_dev_name_show(struct wlp *, char *);
-extern ssize_t wlp_dev_name_store(struct wlp *, const char *, size_t);
-extern ssize_t wlp_dev_manufacturer_show(struct wlp *, char *);
-extern ssize_t wlp_dev_manufacturer_store(struct wlp *, const char *, size_t);
-extern ssize_t wlp_dev_model_name_show(struct wlp *, char *);
-extern ssize_t wlp_dev_model_name_store(struct wlp *, const char *, size_t);
-extern ssize_t wlp_dev_model_nr_show(struct wlp *, char *);
-extern ssize_t wlp_dev_model_nr_store(struct wlp *, const char *, size_t);
-extern ssize_t wlp_dev_serial_show(struct wlp *, char *);
-extern ssize_t wlp_dev_serial_store(struct wlp *, const char *, size_t);
-extern ssize_t wlp_dev_prim_category_show(struct wlp *, char *);
-extern ssize_t wlp_dev_prim_category_store(struct wlp *, const char *,
- size_t);
-extern ssize_t wlp_dev_prim_OUI_show(struct wlp *, char *);
-extern ssize_t wlp_dev_prim_OUI_store(struct wlp *, const char *, size_t);
-extern ssize_t wlp_dev_prim_OUI_sub_show(struct wlp *, char *);
-extern ssize_t wlp_dev_prim_OUI_sub_store(struct wlp *, const char *,
- size_t);
-extern ssize_t wlp_dev_prim_subcat_show(struct wlp *, char *);
-extern ssize_t wlp_dev_prim_subcat_store(struct wlp *, const char *,
- size_t);
-extern int wlp_receive_frame(struct device *, struct wlp *, struct sk_buff *,
- struct uwb_dev_addr *);
-extern int wlp_prepare_tx_frame(struct device *, struct wlp *,
- struct sk_buff *, struct uwb_dev_addr *);
-void wlp_reset_all(struct wlp *wlp);
-
-/**
- * Initialize WSS
- */
-static inline
-void wlp_wss_init(struct wlp_wss *wss)
-{
- mutex_init(&wss->mutex);
-}
-
-static inline
-void wlp_init(struct wlp *wlp)
-{
- INIT_LIST_HEAD(&wlp->neighbors);
- mutex_init(&wlp->mutex);
- mutex_init(&wlp->nbmutex);
- wlp_wss_init(&wlp->wss);
-}
-
-
-#endif /* #ifndef __LINUX__WLP_H_ */
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff