+++ /dev/null
-/*
- * at76c503/at76c505 USB driver
- *
- * Copyright (c) 2002 - 2003 Oliver Kurth
- * Copyright (c) 2004 Joerg Albert <joerg.albert@gmx.de>
- * Copyright (c) 2004 Nick Jones
- * Copyright (c) 2004 Balint Seeber <n0_5p4m_p13453@hotmail.com>
- * Copyright (c) 2007 Guido Guenther <agx@sigxcpu.org>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This file is part of the Berlios driver for WLAN USB devices based on the
- * Atmel AT76C503A/505/505A.
- *
- * Some iw_handler code was taken from airo.c, (C) 1999 Benjamin Reed
- */
-
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/list.h>
-#include <linux/usb.h>
-#include <linux/netdevice.h>
-#include <linux/if_arp.h>
-#include <linux/etherdevice.h>
-#include <linux/ethtool.h>
-#include <linux/wireless.h>
-#include <net/iw_handler.h>
-#include <net/ieee80211_radiotap.h>
-#include <linux/firmware.h>
-#include <linux/leds.h>
-#include <linux/ieee80211.h>
-
-#include "at76_usb.h"
-
-/* Version information */
-#define DRIVER_NAME "at76_usb"
-#define DRIVER_VERSION "0.17"
-#define DRIVER_DESC "Atmel at76x USB Wireless LAN Driver"
-
-/* at76_debug bits */
-#define DBG_PROGRESS 0x00000001 /* authentication/accociation */
-#define DBG_BSS_TABLE 0x00000002 /* show BSS table after scans */
-#define DBG_IOCTL 0x00000004 /* ioctl calls / settings */
-#define DBG_MAC_STATE 0x00000008 /* MAC state transitions */
-#define DBG_TX_DATA 0x00000010 /* tx header */
-#define DBG_TX_DATA_CONTENT 0x00000020 /* tx content */
-#define DBG_TX_MGMT 0x00000040 /* tx management */
-#define DBG_RX_DATA 0x00000080 /* rx data header */
-#define DBG_RX_DATA_CONTENT 0x00000100 /* rx data content */
-#define DBG_RX_MGMT 0x00000200 /* rx mgmt frame headers */
-#define DBG_RX_BEACON 0x00000400 /* rx beacon */
-#define DBG_RX_CTRL 0x00000800 /* rx control */
-#define DBG_RX_MGMT_CONTENT 0x00001000 /* rx mgmt content */
-#define DBG_RX_FRAGS 0x00002000 /* rx data fragment handling */
-#define DBG_DEVSTART 0x00004000 /* fw download, device start */
-#define DBG_URB 0x00008000 /* rx urb status, ... */
-#define DBG_RX_ATMEL_HDR 0x00010000 /* Atmel-specific Rx headers */
-#define DBG_PROC_ENTRY 0x00020000 /* procedure entries/exits */
-#define DBG_PM 0x00040000 /* power management settings */
-#define DBG_BSS_MATCH 0x00080000 /* BSS match failures */
-#define DBG_PARAMS 0x00100000 /* show configured parameters */
-#define DBG_WAIT_COMPLETE 0x00200000 /* command completion */
-#define DBG_RX_FRAGS_SKB 0x00400000 /* skb header of Rx fragments */
-#define DBG_BSS_TABLE_RM 0x00800000 /* purging bss table entries */
-#define DBG_MONITOR_MODE 0x01000000 /* monitor mode */
-#define DBG_MIB 0x02000000 /* dump all MIBs on startup */
-#define DBG_MGMT_TIMER 0x04000000 /* dump mgmt_timer ops */
-#define DBG_WE_EVENTS 0x08000000 /* dump wireless events */
-#define DBG_FW 0x10000000 /* firmware download */
-#define DBG_DFU 0x20000000 /* device firmware upgrade */
-
-#define DBG_DEFAULTS 0
-
-/* Use our own dbg macro */
-#define at76_dbg(bits, format, arg...) \
- do { \
- if (at76_debug & (bits)) \
- printk(KERN_DEBUG DRIVER_NAME ": " format "\n" , ## arg); \
- } while (0)
-
-static int at76_debug = DBG_DEFAULTS;
-
-/* Protect against concurrent firmware loading and parsing */
-static struct mutex fw_mutex;
-
-static struct fwentry firmwares[] = {
- [0] = {""},
- [BOARD_503_ISL3861] = {"atmel_at76c503-i3861.bin"},
- [BOARD_503_ISL3863] = {"atmel_at76c503-i3863.bin"},
- [BOARD_503] = {"atmel_at76c503-rfmd.bin"},
- [BOARD_503_ACC] = {"atmel_at76c503-rfmd-acc.bin"},
- [BOARD_505] = {"atmel_at76c505-rfmd.bin"},
- [BOARD_505_2958] = {"atmel_at76c505-rfmd2958.bin"},
- [BOARD_505A] = {"atmel_at76c505a-rfmd2958.bin"},
- [BOARD_505AMX] = {"atmel_at76c505amx-rfmd.bin"},
-};
-
-#define USB_DEVICE_DATA(__ops) .driver_info = (kernel_ulong_t)(__ops)
-
-static struct usb_device_id dev_table[] = {
- /*
- * at76c503-i3861
- */
- /* Generic AT76C503/3861 device */
- {USB_DEVICE(0x03eb, 0x7603), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* Linksys WUSB11 v2.1/v2.6 */
- {USB_DEVICE(0x066b, 0x2211), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* Netgear MA101 rev. A */
- {USB_DEVICE(0x0864, 0x4100), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* Tekram U300C / Allnet ALL0193 */
- {USB_DEVICE(0x0b3b, 0x1612), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* HP HN210W J7801A */
- {USB_DEVICE(0x03f0, 0x011c), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* Sitecom/Z-Com/Zyxel M4Y-750 */
- {USB_DEVICE(0x0cde, 0x0001), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* Dynalink/Askey WLL013 (intersil) */
- {USB_DEVICE(0x069a, 0x0320), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* EZ connect 11Mpbs Wireless USB Adapter SMC2662W v1 */
- {USB_DEVICE(0x0d5c, 0xa001), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* BenQ AWL300 */
- {USB_DEVICE(0x04a5, 0x9000), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* Addtron AWU-120, Compex WLU11 */
- {USB_DEVICE(0x05dd, 0xff31), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* Intel AP310 AnyPoint II USB */
- {USB_DEVICE(0x8086, 0x0200), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* Dynalink L11U */
- {USB_DEVICE(0x0d8e, 0x7100), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* Arescom WL-210, FCC id 07J-GL2411USB */
- {USB_DEVICE(0x0d8e, 0x7110), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* I-O DATA WN-B11/USB */
- {USB_DEVICE(0x04bb, 0x0919), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /* BT Voyager 1010 */
- {USB_DEVICE(0x069a, 0x0821), USB_DEVICE_DATA(BOARD_503_ISL3861)},
- /*
- * at76c503-i3863
- */
- /* Generic AT76C503/3863 device */
- {USB_DEVICE(0x03eb, 0x7604), USB_DEVICE_DATA(BOARD_503_ISL3863)},
- /* Samsung SWL-2100U */
- {USB_DEVICE(0x055d, 0xa000), USB_DEVICE_DATA(BOARD_503_ISL3863)},
- /*
- * at76c503-rfmd
- */
- /* Generic AT76C503/RFMD device */
- {USB_DEVICE(0x03eb, 0x7605), USB_DEVICE_DATA(BOARD_503)},
- /* Dynalink/Askey WLL013 (rfmd) */
- {USB_DEVICE(0x069a, 0x0321), USB_DEVICE_DATA(BOARD_503)},
- /* Linksys WUSB11 v2.6 */
- {USB_DEVICE(0x077b, 0x2219), USB_DEVICE_DATA(BOARD_503)},
- /* Network Everywhere NWU11B */
- {USB_DEVICE(0x077b, 0x2227), USB_DEVICE_DATA(BOARD_503)},
- /* Netgear MA101 rev. B */
- {USB_DEVICE(0x0864, 0x4102), USB_DEVICE_DATA(BOARD_503)},
- /* D-Link DWL-120 rev. E */
- {USB_DEVICE(0x2001, 0x3200), USB_DEVICE_DATA(BOARD_503)},
- /* Actiontec 802UAT1, HWU01150-01UK */
- {USB_DEVICE(0x1668, 0x7605), USB_DEVICE_DATA(BOARD_503)},
- /* AirVast W-Buddie WN210 */
- {USB_DEVICE(0x03eb, 0x4102), USB_DEVICE_DATA(BOARD_503)},
- /* Dick Smith Electronics XH1153 802.11b USB adapter */
- {USB_DEVICE(0x1371, 0x5743), USB_DEVICE_DATA(BOARD_503)},
- /* CNet CNUSB611 */
- {USB_DEVICE(0x1371, 0x0001), USB_DEVICE_DATA(BOARD_503)},
- /* FiberLine FL-WL200U */
- {USB_DEVICE(0x1371, 0x0002), USB_DEVICE_DATA(BOARD_503)},
- /* BenQ AWL400 USB stick */
- {USB_DEVICE(0x04a5, 0x9001), USB_DEVICE_DATA(BOARD_503)},
- /* 3Com 3CRSHEW696 */
- {USB_DEVICE(0x0506, 0x0a01), USB_DEVICE_DATA(BOARD_503)},
- /* Siemens Santis ADSL WLAN USB adapter WLL 013 */
- {USB_DEVICE(0x0681, 0x001b), USB_DEVICE_DATA(BOARD_503)},
- /* Belkin F5D6050, version 2 */
- {USB_DEVICE(0x050d, 0x0050), USB_DEVICE_DATA(BOARD_503)},
- /* iBlitzz, BWU613 (not *B or *SB) */
- {USB_DEVICE(0x07b8, 0xb000), USB_DEVICE_DATA(BOARD_503)},
- /* Gigabyte GN-WLBM101 */
- {USB_DEVICE(0x1044, 0x8003), USB_DEVICE_DATA(BOARD_503)},
- /* Planex GW-US11S */
- {USB_DEVICE(0x2019, 0x3220), USB_DEVICE_DATA(BOARD_503)},
- /* Internal WLAN adapter in h5[4,5]xx series iPAQs */
- {USB_DEVICE(0x049f, 0x0032), USB_DEVICE_DATA(BOARD_503)},
- /* Corega Wireless LAN USB-11 mini */
- {USB_DEVICE(0x07aa, 0x0011), USB_DEVICE_DATA(BOARD_503)},
- /* Corega Wireless LAN USB-11 mini2 */
- {USB_DEVICE(0x07aa, 0x0018), USB_DEVICE_DATA(BOARD_503)},
- /* Uniden PCW100 */
- {USB_DEVICE(0x05dd, 0xff35), USB_DEVICE_DATA(BOARD_503)},
- /*
- * at76c503-rfmd-acc
- */
- /* SMC2664W */
- {USB_DEVICE(0x083a, 0x3501), USB_DEVICE_DATA(BOARD_503_ACC)},
- /* Belkin F5D6050, SMC2662W v2, SMC2662W-AR */
- {USB_DEVICE(0x0d5c, 0xa002), USB_DEVICE_DATA(BOARD_503_ACC)},
- /*
- * at76c505-rfmd
- */
- /* Generic AT76C505/RFMD */
- {USB_DEVICE(0x03eb, 0x7606), USB_DEVICE_DATA(BOARD_505)},
- /*
- * at76c505-rfmd2958
- */
- /* Generic AT76C505/RFMD, OvisLink WL-1130USB */
- {USB_DEVICE(0x03eb, 0x7613), USB_DEVICE_DATA(BOARD_505_2958)},
- /* Fiberline FL-WL240U */
- {USB_DEVICE(0x1371, 0x0014), USB_DEVICE_DATA(BOARD_505_2958)},
- /* CNet CNUSB-611G */
- {USB_DEVICE(0x1371, 0x0013), USB_DEVICE_DATA(BOARD_505_2958)},
- /* Linksys WUSB11 v2.8 */
- {USB_DEVICE(0x1915, 0x2233), USB_DEVICE_DATA(BOARD_505_2958)},
- /* Xterasys XN-2122B, IBlitzz BWU613B/BWU613SB */
- {USB_DEVICE(0x12fd, 0x1001), USB_DEVICE_DATA(BOARD_505_2958)},
- /* Corega WLAN USB Stick 11 */
- {USB_DEVICE(0x07aa, 0x7613), USB_DEVICE_DATA(BOARD_505_2958)},
- /* Microstar MSI Box MS6978 */
- {USB_DEVICE(0x0db0, 0x1020), USB_DEVICE_DATA(BOARD_505_2958)},
- /*
- * at76c505a-rfmd2958
- */
- /* Generic AT76C505A device */
- {USB_DEVICE(0x03eb, 0x7614), USB_DEVICE_DATA(BOARD_505A)},
- /* Generic AT76C505AS device */
- {USB_DEVICE(0x03eb, 0x7617), USB_DEVICE_DATA(BOARD_505A)},
- /* Siemens Gigaset USB WLAN Adapter 11 */
- {USB_DEVICE(0x1690, 0x0701), USB_DEVICE_DATA(BOARD_505A)},
- /* OQO Model 01+ Internal Wi-Fi */
- {USB_DEVICE(0x1557, 0x0002), USB_DEVICE_DATA(BOARD_505A)},
- /*
- * at76c505amx-rfmd
- */
- /* Generic AT76C505AMX device */
- {USB_DEVICE(0x03eb, 0x7615), USB_DEVICE_DATA(BOARD_505AMX)},
- {}
-};
-
-MODULE_DEVICE_TABLE(usb, dev_table);
-
-/* Supported rates of this hardware, bit 7 marks basic rates */
-static const u8 hw_rates[] = { 0x82, 0x84, 0x0b, 0x16 };
-
-/* Frequency of each channel in MHz */
-static const long channel_frequency[] = {
- 2412, 2417, 2422, 2427, 2432, 2437, 2442,
- 2447, 2452, 2457, 2462, 2467, 2472, 2484
-};
-
-#define NUM_CHANNELS ARRAY_SIZE(channel_frequency)
-
-static const char *const preambles[] = { "long", "short", "auto" };
-
-static const char *const mac_states[] = {
- [MAC_INIT] = "INIT",
- [MAC_SCANNING] = "SCANNING",
- [MAC_AUTH] = "AUTH",
- [MAC_ASSOC] = "ASSOC",
- [MAC_JOINING] = "JOINING",
- [MAC_CONNECTED] = "CONNECTED",
- [MAC_OWN_IBSS] = "OWN_IBSS"
-};
-
-/* Firmware download */
-/* DFU states */
-#define STATE_IDLE 0x00
-#define STATE_DETACH 0x01
-#define STATE_DFU_IDLE 0x02
-#define STATE_DFU_DOWNLOAD_SYNC 0x03
-#define STATE_DFU_DOWNLOAD_BUSY 0x04
-#define STATE_DFU_DOWNLOAD_IDLE 0x05
-#define STATE_DFU_MANIFEST_SYNC 0x06
-#define STATE_DFU_MANIFEST 0x07
-#define STATE_DFU_MANIFEST_WAIT_RESET 0x08
-#define STATE_DFU_UPLOAD_IDLE 0x09
-#define STATE_DFU_ERROR 0x0a
-
-/* DFU commands */
-#define DFU_DETACH 0
-#define DFU_DNLOAD 1
-#define DFU_UPLOAD 2
-#define DFU_GETSTATUS 3
-#define DFU_CLRSTATUS 4
-#define DFU_GETSTATE 5
-#define DFU_ABORT 6
-
-#define FW_BLOCK_SIZE 1024
-
-struct dfu_status {
- unsigned char status;
- unsigned char poll_timeout[3];
- unsigned char state;
- unsigned char string;
-} __attribute__((packed));
-
-static inline int at76_is_intersil(enum board_type board)
-{
- return (board == BOARD_503_ISL3861 || board == BOARD_503_ISL3863);
-}
-
-static inline int at76_is_503rfmd(enum board_type board)
-{
- return (board == BOARD_503 || board == BOARD_503_ACC);
-}
-
-static inline int at76_is_505a(enum board_type board)
-{
- return (board == BOARD_505A || board == BOARD_505AMX);
-}
-
-/* Load a block of the first (internal) part of the firmware */
-static int at76_load_int_fw_block(struct usb_device *udev, int blockno,
- void *block, int size)
-{
- return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), DFU_DNLOAD,
- USB_TYPE_CLASS | USB_DIR_OUT |
- USB_RECIP_INTERFACE, blockno, 0, block, size,
- USB_CTRL_GET_TIMEOUT);
-}
-
-static int at76_dfu_get_status(struct usb_device *udev,
- struct dfu_status *status)
-{
- int ret;
-
- ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATUS,
- USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
- 0, 0, status, sizeof(struct dfu_status),
- USB_CTRL_GET_TIMEOUT);
- return ret;
-}
-
-static u8 at76_dfu_get_state(struct usb_device *udev, u8 *state)
-{
- int ret;
-
- ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), DFU_GETSTATE,
- USB_TYPE_CLASS | USB_DIR_IN | USB_RECIP_INTERFACE,
- 0, 0, state, 1, USB_CTRL_GET_TIMEOUT);
- return ret;
-}
-
-/* Convert timeout from the DFU status to jiffies */
-static inline unsigned long at76_get_timeout(struct dfu_status *s)
-{
- return msecs_to_jiffies((s->poll_timeout[2] << 16)
- | (s->poll_timeout[1] << 8)
- | (s->poll_timeout[0]));
-}
-
-/* Load internal firmware from the buffer. If manifest_sync_timeout > 0, use
- * its value in jiffies in the MANIFEST_SYNC state. */
-static int at76_usbdfu_download(struct usb_device *udev, u8 *buf, u32 size,
- int manifest_sync_timeout)
-{
- u8 *block;
- struct dfu_status dfu_stat_buf;
- int ret = 0;
- int need_dfu_state = 1;
- int is_done = 0;
- u8 dfu_state = 0;
- u32 dfu_timeout = 0;
- int bsize = 0;
- int blockno = 0;
-
- at76_dbg(DBG_DFU, "%s( %p, %u, %d)", __func__, buf, size,
- manifest_sync_timeout);
-
- if (!size) {
- dev_printk(KERN_ERR, &udev->dev, "FW buffer length invalid!\n");
- return -EINVAL;
- }
-
- block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
- if (!block)
- return -ENOMEM;
-
- do {
- if (need_dfu_state) {
- ret = at76_dfu_get_state(udev, &dfu_state);
- if (ret < 0) {
- dev_printk(KERN_ERR, &udev->dev,
- "cannot get DFU state: %d\n", ret);
- goto exit;
- }
- need_dfu_state = 0;
- }
-
- switch (dfu_state) {
- case STATE_DFU_DOWNLOAD_SYNC:
- at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_SYNC");
- ret = at76_dfu_get_status(udev, &dfu_stat_buf);
- if (ret >= 0) {
- dfu_state = dfu_stat_buf.state;
- dfu_timeout = at76_get_timeout(&dfu_stat_buf);
- need_dfu_state = 0;
- } else
- dev_printk(KERN_ERR, &udev->dev,
- "at76_dfu_get_status returned %d\n",
- ret);
- break;
-
- case STATE_DFU_DOWNLOAD_BUSY:
- at76_dbg(DBG_DFU, "STATE_DFU_DOWNLOAD_BUSY");
- need_dfu_state = 1;
-
- at76_dbg(DBG_DFU, "DFU: Resetting device");
- schedule_timeout_interruptible(dfu_timeout);
- break;
-
- case STATE_DFU_DOWNLOAD_IDLE:
- at76_dbg(DBG_DFU, "DOWNLOAD...");
- /* fall through */
- case STATE_DFU_IDLE:
- at76_dbg(DBG_DFU, "DFU IDLE");
-
- bsize = min_t(int, size, FW_BLOCK_SIZE);
- memcpy(block, buf, bsize);
- at76_dbg(DBG_DFU, "int fw, size left = %5d, "
- "bsize = %4d, blockno = %2d", size, bsize,
- blockno);
- ret =
- at76_load_int_fw_block(udev, blockno, block, bsize);
- buf += bsize;
- size -= bsize;
- blockno++;
-
- if (ret != bsize)
- dev_printk(KERN_ERR, &udev->dev,
- "at76_load_int_fw_block "
- "returned %d\n", ret);
- need_dfu_state = 1;
- break;
-
- case STATE_DFU_MANIFEST_SYNC:
- at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_SYNC");
-
- ret = at76_dfu_get_status(udev, &dfu_stat_buf);
- if (ret < 0)
- break;
-
- dfu_state = dfu_stat_buf.state;
- dfu_timeout = at76_get_timeout(&dfu_stat_buf);
- need_dfu_state = 0;
-
- /* override the timeout from the status response,
- needed for AT76C505A */
- if (manifest_sync_timeout > 0)
- dfu_timeout = manifest_sync_timeout;
-
- at76_dbg(DBG_DFU, "DFU: Waiting for manifest phase");
- schedule_timeout_interruptible(dfu_timeout);
- break;
-
- case STATE_DFU_MANIFEST:
- at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST");
- is_done = 1;
- break;
-
- case STATE_DFU_MANIFEST_WAIT_RESET:
- at76_dbg(DBG_DFU, "STATE_DFU_MANIFEST_WAIT_RESET");
- is_done = 1;
- break;
-
- case STATE_DFU_UPLOAD_IDLE:
- at76_dbg(DBG_DFU, "STATE_DFU_UPLOAD_IDLE");
- break;
-
- case STATE_DFU_ERROR:
- at76_dbg(DBG_DFU, "STATE_DFU_ERROR");
- ret = -EPIPE;
- break;
-
- default:
- at76_dbg(DBG_DFU, "DFU UNKNOWN STATE (%d)", dfu_state);
- ret = -EINVAL;
- break;
- }
- } while (!is_done && (ret >= 0));
-
-exit:
- kfree(block);
- if (ret >= 0)
- ret = 0;
-
- return ret;
-}
-
-/* Report that the scan results are ready */
-static inline void at76_iwevent_scan_complete(struct net_device *netdev)
-{
- union iwreq_data wrqu;
- wrqu.data.length = 0;
- wrqu.data.flags = 0;
- wireless_send_event(netdev, SIOCGIWSCAN, &wrqu, NULL);
- at76_dbg(DBG_WE_EVENTS, "%s: SIOCGIWSCAN sent", netdev->name);
-}
-
-static inline void at76_iwevent_bss_connect(struct net_device *netdev,
- u8 *bssid)
-{
- union iwreq_data wrqu;
- wrqu.data.length = 0;
- wrqu.data.flags = 0;
- memcpy(wrqu.ap_addr.sa_data, bssid, ETH_ALEN);
- wrqu.ap_addr.sa_family = ARPHRD_ETHER;
- wireless_send_event(netdev, SIOCGIWAP, &wrqu, NULL);
- at76_dbg(DBG_WE_EVENTS, "%s: %s: SIOCGIWAP sent", netdev->name,
- __func__);
-}
-
-static inline void at76_iwevent_bss_disconnect(struct net_device *netdev)
-{
- union iwreq_data wrqu;
- wrqu.data.length = 0;
- wrqu.data.flags = 0;
- memset(wrqu.ap_addr.sa_data, 0, ETH_ALEN);
- wrqu.ap_addr.sa_family = ARPHRD_ETHER;
- wireless_send_event(netdev, SIOCGIWAP, &wrqu, NULL);
- at76_dbg(DBG_WE_EVENTS, "%s: %s: SIOCGIWAP sent", netdev->name,
- __func__);
-}
-
-#define HEX2STR_BUFFERS 4
-#define HEX2STR_MAX_LEN 64
-#define BIN2HEX(x) ((x) < 10 ? '0' + (x) : (x) + 'A' - 10)
-
-/* Convert binary data into hex string */
-static char *hex2str(void *buf, int len)
-{
- static atomic_t a = ATOMIC_INIT(0);
- static char bufs[HEX2STR_BUFFERS][3 * HEX2STR_MAX_LEN + 1];
- char *ret = bufs[atomic_inc_return(&a) & (HEX2STR_BUFFERS - 1)];
- char *obuf = ret;
- u8 *ibuf = buf;
-
- if (len > HEX2STR_MAX_LEN)
- len = HEX2STR_MAX_LEN;
-
- if (len <= 0) {
- ret[0] = '\0';
- return ret;
- }
-
- while (len--) {
- *obuf++ = BIN2HEX(*ibuf >> 4);
- *obuf++ = BIN2HEX(*ibuf & 0xf);
- *obuf++ = '-';
- ibuf++;
- }
- *(--obuf) = '\0';
-
- return ret;
-}
-
-/* LED trigger */
-static int tx_activity;
-static void at76_ledtrig_tx_timerfunc(unsigned long data);
-static DEFINE_TIMER(ledtrig_tx_timer, at76_ledtrig_tx_timerfunc, 0, 0);
-DEFINE_LED_TRIGGER(ledtrig_tx);
-
-static void at76_ledtrig_tx_timerfunc(unsigned long data)
-{
- static int tx_lastactivity;
-
- if (tx_lastactivity != tx_activity) {
- tx_lastactivity = tx_activity;
- led_trigger_event(ledtrig_tx, LED_FULL);
- mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
- } else
- led_trigger_event(ledtrig_tx, LED_OFF);
-}
-
-static void at76_ledtrig_tx_activity(void)
-{
- tx_activity++;
- if (!timer_pending(&ledtrig_tx_timer))
- mod_timer(&ledtrig_tx_timer, jiffies + HZ / 4);
-}
-
-/* Check if the given ssid is hidden */
-static inline int at76_is_hidden_ssid(u8 *ssid, int length)
-{
- static const u8 zeros[32];
-
- if (length == 0)
- return 1;
-
- if (length == 1 && ssid[0] == ' ')
- return 1;
-
- return (memcmp(ssid, zeros, length) == 0);
-}
-
-static inline void at76_free_bss_list(struct at76_priv *priv)
-{
- struct list_head *next, *ptr;
- unsigned long flags;
-
- spin_lock_irqsave(&priv->bss_list_spinlock, flags);
-
- priv->curr_bss = NULL;
-
- list_for_each_safe(ptr, next, &priv->bss_list) {
- list_del(ptr);
- kfree(list_entry(ptr, struct bss_info, list));
- }
-
- spin_unlock_irqrestore(&priv->bss_list_spinlock, flags);
-}
-
-static int at76_remap(struct usb_device *udev)
-{
- int ret;
- ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0a,
- USB_TYPE_VENDOR | USB_DIR_OUT |
- USB_RECIP_INTERFACE, 0, 0, NULL, 0,
- USB_CTRL_GET_TIMEOUT);
- if (ret < 0)
- return ret;
- return 0;
-}
-
-static int at76_get_op_mode(struct usb_device *udev)
-{
- int ret;
- u8 saved;
- u8 *op_mode;
-
- op_mode = kmalloc(1, GFP_NOIO);
- if (!op_mode)
- return -ENOMEM;
- ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
- USB_TYPE_VENDOR | USB_DIR_IN |
- USB_RECIP_INTERFACE, 0x01, 0, op_mode, 1,
- USB_CTRL_GET_TIMEOUT);
- saved = *op_mode;
- kfree(op_mode);
-
- if (ret < 0)
- return ret;
- else if (ret < 1)
- return -EIO;
- else
- return saved;
-}
-
-/* Load a block of the second ("external") part of the firmware */
-static inline int at76_load_ext_fw_block(struct usb_device *udev, int blockno,
- void *block, int size)
-{
- return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
- USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
- 0x0802, blockno, block, size,
- USB_CTRL_GET_TIMEOUT);
-}
-
-static inline int at76_get_hw_cfg(struct usb_device *udev,
- union at76_hwcfg *buf, int buf_size)
-{
- return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
- USB_TYPE_VENDOR | USB_DIR_IN |
- USB_RECIP_INTERFACE, 0x0a02, 0,
- buf, buf_size, USB_CTRL_GET_TIMEOUT);
-}
-
-/* Intersil boards use a different "value" for GetHWConfig requests */
-static inline int at76_get_hw_cfg_intersil(struct usb_device *udev,
- union at76_hwcfg *buf, int buf_size)
-{
- return usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
- USB_TYPE_VENDOR | USB_DIR_IN |
- USB_RECIP_INTERFACE, 0x0902, 0,
- buf, buf_size, USB_CTRL_GET_TIMEOUT);
-}
-
-/* Get the hardware configuration for the adapter and put it to the appropriate
- * fields of 'priv' (the GetHWConfig request and interpretation of the result
- * depends on the board type) */
-static int at76_get_hw_config(struct at76_priv *priv)
-{
- int ret;
- union at76_hwcfg *hwcfg = kmalloc(sizeof(*hwcfg), GFP_KERNEL);
-
- if (!hwcfg)
- return -ENOMEM;
-
- if (at76_is_intersil(priv->board_type)) {
- ret = at76_get_hw_cfg_intersil(priv->udev, hwcfg,
- sizeof(hwcfg->i));
- if (ret < 0)
- goto exit;
- memcpy(priv->mac_addr, hwcfg->i.mac_addr, ETH_ALEN);
- priv->regulatory_domain = hwcfg->i.regulatory_domain;
- } else if (at76_is_503rfmd(priv->board_type)) {
- ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r3));
- if (ret < 0)
- goto exit;
- memcpy(priv->mac_addr, hwcfg->r3.mac_addr, ETH_ALEN);
- priv->regulatory_domain = hwcfg->r3.regulatory_domain;
- } else {
- ret = at76_get_hw_cfg(priv->udev, hwcfg, sizeof(hwcfg->r5));
- if (ret < 0)
- goto exit;
- memcpy(priv->mac_addr, hwcfg->r5.mac_addr, ETH_ALEN);
- priv->regulatory_domain = hwcfg->r5.regulatory_domain;
- }
-
-exit:
- kfree(hwcfg);
- if (ret < 0)
- printk(KERN_ERR "%s: cannot get HW Config (error %d)\n",
- priv->netdev->name, ret);
-
- return ret;
-}
-
-static struct reg_domain const *at76_get_reg_domain(u16 code)
-{
- int i;
- static struct reg_domain const fd_tab[] = {
- {0x10, "FCC (USA)", 0x7ff}, /* ch 1-11 */
- {0x20, "IC (Canada)", 0x7ff}, /* ch 1-11 */
- {0x30, "ETSI (most of Europe)", 0x1fff}, /* ch 1-13 */
- {0x31, "Spain", 0x600}, /* ch 10-11 */
- {0x32, "France", 0x1e00}, /* ch 10-13 */
- {0x40, "MKK (Japan)", 0x2000}, /* ch 14 */
- {0x41, "MKK1 (Japan)", 0x3fff}, /* ch 1-14 */
- {0x50, "Israel", 0x3fc}, /* ch 3-9 */
- {0x00, "<unknown>", 0xffffffff} /* ch 1-32 */
- };
-
- /* Last entry is fallback for unknown domain code */
- for (i = 0; i < ARRAY_SIZE(fd_tab) - 1; i++)
- if (code == fd_tab[i].code)
- break;
-
- return &fd_tab[i];
-}
-
-static inline int at76_get_mib(struct usb_device *udev, u16 mib, void *buf,
- int buf_size)
-{
- int ret;
-
- ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x33,
- USB_TYPE_VENDOR | USB_DIR_IN |
- USB_RECIP_INTERFACE, mib << 8, 0, buf, buf_size,
- USB_CTRL_GET_TIMEOUT);
- if (ret >= 0 && ret != buf_size)
- return -EIO;
- return ret;
-}
-
-/* Return positive number for status, negative for an error */
-static inline int at76_get_cmd_status(struct usb_device *udev, u8 cmd)
-{
- u8 *stat_buf;
- int ret;
-
- stat_buf = kmalloc(40, GFP_NOIO);
- if (!stat_buf)
- return -ENOMEM;
-
- ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x22,
- USB_TYPE_VENDOR | USB_DIR_IN |
- USB_RECIP_INTERFACE, cmd, 0, stat_buf,
- 40, USB_CTRL_GET_TIMEOUT);
- if (ret >= 0)
- ret = stat_buf[5];
- kfree(stat_buf);
-
- return ret;
-}
-
-static int at76_set_card_command(struct usb_device *udev, u8 cmd, void *buf,
- int buf_size)
-{
- int ret;
- struct at76_command *cmd_buf = kmalloc(sizeof(struct at76_command) +
- buf_size, GFP_KERNEL);
-
- if (!cmd_buf)
- return -ENOMEM;
-
- cmd_buf->cmd = cmd;
- cmd_buf->reserved = 0;
- cmd_buf->size = cpu_to_le16(buf_size);
- memcpy(cmd_buf->data, buf, buf_size);
-
- ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x0e,
- USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_DEVICE,
- 0, 0, cmd_buf,
- sizeof(struct at76_command) + buf_size,
- USB_CTRL_GET_TIMEOUT);
- kfree(cmd_buf);
- return ret;
-}
-
-#define MAKE_CMD_STATUS_CASE(c) case (c): return #c
-static const char *at76_get_cmd_status_string(u8 cmd_status)
-{
- switch (cmd_status) {
- MAKE_CMD_STATUS_CASE(CMD_STATUS_IDLE);
- MAKE_CMD_STATUS_CASE(CMD_STATUS_COMPLETE);
- MAKE_CMD_STATUS_CASE(CMD_STATUS_UNKNOWN);
- MAKE_CMD_STATUS_CASE(CMD_STATUS_INVALID_PARAMETER);
- MAKE_CMD_STATUS_CASE(CMD_STATUS_FUNCTION_NOT_SUPPORTED);
- MAKE_CMD_STATUS_CASE(CMD_STATUS_TIME_OUT);
- MAKE_CMD_STATUS_CASE(CMD_STATUS_IN_PROGRESS);
- MAKE_CMD_STATUS_CASE(CMD_STATUS_HOST_FAILURE);
- MAKE_CMD_STATUS_CASE(CMD_STATUS_SCAN_FAILED);
- }
-
- return "UNKNOWN";
-}
-
-/* Wait until the command is completed */
-static int at76_wait_completion(struct at76_priv *priv, int cmd)
-{
- int status = 0;
- unsigned long timeout = jiffies + CMD_COMPLETION_TIMEOUT;
-
- do {
- status = at76_get_cmd_status(priv->udev, cmd);
- if (status < 0) {
- printk(KERN_ERR "%s: at76_get_cmd_status failed: %d\n",
- priv->netdev->name, status);
- break;
- }
-
- at76_dbg(DBG_WAIT_COMPLETE,
- "%s: Waiting on cmd %d, status = %d (%s)",
- priv->netdev->name, cmd, status,
- at76_get_cmd_status_string(status));
-
- if (status != CMD_STATUS_IN_PROGRESS
- && status != CMD_STATUS_IDLE)
- break;
-
- schedule_timeout_interruptible(HZ / 10); /* 100 ms */
- if (time_after(jiffies, timeout)) {
- printk(KERN_ERR
- "%s: completion timeout for command %d\n",
- priv->netdev->name, cmd);
- status = -ETIMEDOUT;
- break;
- }
- } while (1);
-
- return status;
-}
-
-static int at76_set_mib(struct at76_priv *priv, struct set_mib_buffer *buf)
-{
- int ret;
-
- ret = at76_set_card_command(priv->udev, CMD_SET_MIB, buf,
- offsetof(struct set_mib_buffer,
- data) + buf->size);
- if (ret < 0)
- return ret;
-
- ret = at76_wait_completion(priv, CMD_SET_MIB);
- if (ret != CMD_STATUS_COMPLETE) {
- printk(KERN_INFO
- "%s: set_mib: at76_wait_completion failed "
- "with %d\n", priv->netdev->name, ret);
- ret = -EIO;
- }
-
- return ret;
-}
-
-/* Return < 0 on error, == 0 if no command sent, == 1 if cmd sent */
-static int at76_set_radio(struct at76_priv *priv, int enable)
-{
- int ret;
- int cmd;
-
- if (priv->radio_on == enable)
- return 0;
-
- cmd = enable ? CMD_RADIO_ON : CMD_RADIO_OFF;
-
- ret = at76_set_card_command(priv->udev, cmd, NULL, 0);
- if (ret < 0)
- printk(KERN_ERR "%s: at76_set_card_command(%d) failed: %d\n",
- priv->netdev->name, cmd, ret);
- else
- ret = 1;
-
- priv->radio_on = enable;
- return ret;
-}
-
-/* Set current power save mode (AT76_PM_OFF/AT76_PM_ON/AT76_PM_SMART) */
-static int at76_set_pm_mode(struct at76_priv *priv)
-{
- int ret = 0;
-
- priv->mib_buf.type = MIB_MAC_MGMT;
- priv->mib_buf.size = 1;
- priv->mib_buf.index = offsetof(struct mib_mac_mgmt, power_mgmt_mode);
- priv->mib_buf.data.byte = priv->pm_mode;
-
- ret = at76_set_mib(priv, &priv->mib_buf);
- if (ret < 0)
- printk(KERN_ERR "%s: set_mib (pm_mode) failed: %d\n",
- priv->netdev->name, ret);
-
- return ret;
-}
-
-/* Set the association id for power save mode */
-static int at76_set_associd(struct at76_priv *priv, u16 id)
-{
- int ret = 0;
-
- priv->mib_buf.type = MIB_MAC_MGMT;
- priv->mib_buf.size = 2;
- priv->mib_buf.index = offsetof(struct mib_mac_mgmt, station_id);
- priv->mib_buf.data.word = cpu_to_le16(id);
-
- ret = at76_set_mib(priv, &priv->mib_buf);
- if (ret < 0)
- printk(KERN_ERR "%s: set_mib (associd) failed: %d\n",
- priv->netdev->name, ret);
-
- return ret;
-}
-
-/* Set the listen interval for power save mode */
-static int at76_set_listen_interval(struct at76_priv *priv, u16 interval)
-{
- int ret = 0;
-
- priv->mib_buf.type = MIB_MAC;
- priv->mib_buf.size = 2;
- priv->mib_buf.index = offsetof(struct mib_mac, listen_interval);
- priv->mib_buf.data.word = cpu_to_le16(interval);
-
- ret = at76_set_mib(priv, &priv->mib_buf);
- if (ret < 0)
- printk(KERN_ERR
- "%s: set_mib (listen_interval) failed: %d\n",
- priv->netdev->name, ret);
-
- return ret;
-}
-
-static int at76_set_preamble(struct at76_priv *priv, u8 type)
-{
- int ret = 0;
-
- priv->mib_buf.type = MIB_LOCAL;
- priv->mib_buf.size = 1;
- priv->mib_buf.index = offsetof(struct mib_local, preamble_type);
- priv->mib_buf.data.byte = type;
-
- ret = at76_set_mib(priv, &priv->mib_buf);
- if (ret < 0)
- printk(KERN_ERR "%s: set_mib (preamble) failed: %d\n",
- priv->netdev->name, ret);
-
- return ret;
-}
-
-static int at76_set_frag(struct at76_priv *priv, u16 size)
-{
- int ret = 0;
-
- priv->mib_buf.type = MIB_MAC;
- priv->mib_buf.size = 2;
- priv->mib_buf.index = offsetof(struct mib_mac, frag_threshold);
- priv->mib_buf.data.word = cpu_to_le16(size);
-
- ret = at76_set_mib(priv, &priv->mib_buf);
- if (ret < 0)
- printk(KERN_ERR "%s: set_mib (frag threshold) failed: %d\n",
- priv->netdev->name, ret);
-
- return ret;
-}
-
-static int at76_set_rts(struct at76_priv *priv, u16 size)
-{
- int ret = 0;
-
- priv->mib_buf.type = MIB_MAC;
- priv->mib_buf.size = 2;
- priv->mib_buf.index = offsetof(struct mib_mac, rts_threshold);
- priv->mib_buf.data.word = cpu_to_le16(size);
-
- ret = at76_set_mib(priv, &priv->mib_buf);
- if (ret < 0)
- printk(KERN_ERR "%s: set_mib (rts) failed: %d\n",
- priv->netdev->name, ret);
-
- return ret;
-}
-
-static int at76_set_autorate_fallback(struct at76_priv *priv, int onoff)
-{
- int ret = 0;
-
- priv->mib_buf.type = MIB_LOCAL;
- priv->mib_buf.size = 1;
- priv->mib_buf.index = offsetof(struct mib_local, txautorate_fallback);
- priv->mib_buf.data.byte = onoff;
-
- ret = at76_set_mib(priv, &priv->mib_buf);
- if (ret < 0)
- printk(KERN_ERR "%s: set_mib (autorate fallback) failed: %d\n",
- priv->netdev->name, ret);
-
- return ret;
-}
-
-static int at76_add_mac_address(struct at76_priv *priv, void *addr)
-{
- int ret = 0;
-
- priv->mib_buf.type = MIB_MAC_ADDR;
- priv->mib_buf.size = ETH_ALEN;
- priv->mib_buf.index = offsetof(struct mib_mac_addr, mac_addr);
- memcpy(priv->mib_buf.data.addr, addr, ETH_ALEN);
-
- ret = at76_set_mib(priv, &priv->mib_buf);
- if (ret < 0)
- printk(KERN_ERR "%s: set_mib (MAC_ADDR, mac_addr) failed: %d\n",
- priv->netdev->name, ret);
-
- return ret;
-}
-
-static void at76_dump_mib_mac_addr(struct at76_priv *priv)
-{
- int i;
- int ret;
- struct mib_mac_addr *m = kmalloc(sizeof(struct mib_mac_addr),
- GFP_KERNEL);
-
- if (!m)
- return;
-
- ret = at76_get_mib(priv->udev, MIB_MAC_ADDR, m,
- sizeof(struct mib_mac_addr));
- if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (MAC_ADDR) failed: %d\n",
- priv->netdev->name, ret);
- goto exit;
- }
-
- at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: mac_addr %pM res 0x%x 0x%x",
- priv->netdev->name, m->mac_addr, m->res[0], m->res[1]);
- for (i = 0; i < ARRAY_SIZE(m->group_addr); i++)
- at76_dbg(DBG_MIB, "%s: MIB MAC_ADDR: group addr %d: %pM, "
- "status %d", priv->netdev->name, i,
- m->group_addr[i], m->group_addr_status[i]);
-exit:
- kfree(m);
-}
-
-static void at76_dump_mib_mac_wep(struct at76_priv *priv)
-{
- int i;
- int ret;
- int key_len;
- struct mib_mac_wep *m = kmalloc(sizeof(struct mib_mac_wep), GFP_KERNEL);
-
- if (!m)
- return;
-
- ret = at76_get_mib(priv->udev, MIB_MAC_WEP, m,
- sizeof(struct mib_mac_wep));
- if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (MAC_WEP) failed: %d\n",
- priv->netdev->name, ret);
- goto exit;
- }
-
- at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: priv_invoked %u def_key_id %u "
- "key_len %u excl_unencr %u wep_icv_err %u wep_excluded %u "
- "encr_level %u key %d", priv->netdev->name,
- m->privacy_invoked, m->wep_default_key_id,
- m->wep_key_mapping_len, m->exclude_unencrypted,
- le32_to_cpu(m->wep_icv_error_count),
- le32_to_cpu(m->wep_excluded_count), m->encryption_level,
- m->wep_default_key_id);
-
- key_len = (m->encryption_level == 1) ?
- WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
-
- for (i = 0; i < WEP_KEYS; i++)
- at76_dbg(DBG_MIB, "%s: MIB MAC_WEP: key %d: %s",
- priv->netdev->name, i,
- hex2str(m->wep_default_keyvalue[i], key_len));
-exit:
- kfree(m);
-}
-
-static void at76_dump_mib_mac_mgmt(struct at76_priv *priv)
-{
- int ret;
- struct mib_mac_mgmt *m = kmalloc(sizeof(struct mib_mac_mgmt),
- GFP_KERNEL);
-
- if (!m)
- return;
-
- ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, m,
- sizeof(struct mib_mac_mgmt));
- if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (MAC_MGMT) failed: %d\n",
- priv->netdev->name, ret);
- goto exit;
- }
-
- at76_dbg(DBG_MIB, "%s: MIB MAC_MGMT: beacon_period %d CFP_max_duration "
- "%d medium_occupancy_limit %d station_id 0x%x ATIM_window %d "
- "CFP_mode %d privacy_opt_impl %d DTIM_period %d CFP_period %d "
- "current_bssid %pM scurrent_essid %s current_bss_type %d "
- "pm_mode %d ibss_change %d res %d "
- "multi_domain_capability_implemented %d "
- "international_roaming %d country_string %.3s",
- priv->netdev->name, le16_to_cpu(m->beacon_period),
- le16_to_cpu(m->CFP_max_duration),
- le16_to_cpu(m->medium_occupancy_limit),
- le16_to_cpu(m->station_id), le16_to_cpu(m->ATIM_window),
- m->CFP_mode, m->privacy_option_implemented, m->DTIM_period,
- m->CFP_period, m->current_bssid,
- hex2str(m->current_essid, IW_ESSID_MAX_SIZE),
- m->current_bss_type, m->power_mgmt_mode, m->ibss_change,
- m->res, m->multi_domain_capability_implemented,
- m->multi_domain_capability_enabled, m->country_string);
-exit:
- kfree(m);
-}
-
-static void at76_dump_mib_mac(struct at76_priv *priv)
-{
- int ret;
- struct mib_mac *m = kmalloc(sizeof(struct mib_mac), GFP_KERNEL);
-
- if (!m)
- return;
-
- ret = at76_get_mib(priv->udev, MIB_MAC, m, sizeof(struct mib_mac));
- if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (MAC) failed: %d\n",
- priv->netdev->name, ret);
- goto exit;
- }
-
- at76_dbg(DBG_MIB, "%s: MIB MAC: max_tx_msdu_lifetime %d "
- "max_rx_lifetime %d frag_threshold %d rts_threshold %d "
- "cwmin %d cwmax %d short_retry_time %d long_retry_time %d "
- "scan_type %d scan_channel %d probe_delay %u "
- "min_channel_time %d max_channel_time %d listen_int %d "
- "desired_ssid %s desired_bssid %pM desired_bsstype %d",
- priv->netdev->name, le32_to_cpu(m->max_tx_msdu_lifetime),
- le32_to_cpu(m->max_rx_lifetime),
- le16_to_cpu(m->frag_threshold), le16_to_cpu(m->rts_threshold),
- le16_to_cpu(m->cwmin), le16_to_cpu(m->cwmax),
- m->short_retry_time, m->long_retry_time, m->scan_type,
- m->scan_channel, le16_to_cpu(m->probe_delay),
- le16_to_cpu(m->min_channel_time),
- le16_to_cpu(m->max_channel_time),
- le16_to_cpu(m->listen_interval),
- hex2str(m->desired_ssid, IW_ESSID_MAX_SIZE),
- m->desired_bssid, m->desired_bsstype);
-exit:
- kfree(m);
-}
-
-static void at76_dump_mib_phy(struct at76_priv *priv)
-{
- int ret;
- struct mib_phy *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
-
- if (!m)
- return;
-
- ret = at76_get_mib(priv->udev, MIB_PHY, m, sizeof(struct mib_phy));
- if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (PHY) failed: %d\n",
- priv->netdev->name, ret);
- goto exit;
- }
-
- at76_dbg(DBG_MIB, "%s: MIB PHY: ed_threshold %d slot_time %d "
- "sifs_time %d preamble_length %d plcp_header_length %d "
- "mpdu_max_length %d cca_mode_supported %d operation_rate_set "
- "0x%x 0x%x 0x%x 0x%x channel_id %d current_cca_mode %d "
- "phy_type %d current_reg_domain %d",
- priv->netdev->name, le32_to_cpu(m->ed_threshold),
- le16_to_cpu(m->slot_time), le16_to_cpu(m->sifs_time),
- le16_to_cpu(m->preamble_length),
- le16_to_cpu(m->plcp_header_length),
- le16_to_cpu(m->mpdu_max_length),
- le16_to_cpu(m->cca_mode_supported), m->operation_rate_set[0],
- m->operation_rate_set[1], m->operation_rate_set[2],
- m->operation_rate_set[3], m->channel_id, m->current_cca_mode,
- m->phy_type, m->current_reg_domain);
-exit:
- kfree(m);
-}
-
-static void at76_dump_mib_local(struct at76_priv *priv)
-{
- int ret;
- struct mib_local *m = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
-
- if (!m)
- return;
-
- ret = at76_get_mib(priv->udev, MIB_LOCAL, m, sizeof(struct mib_local));
- if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (LOCAL) failed: %d\n",
- priv->netdev->name, ret);
- goto exit;
- }
-
- at76_dbg(DBG_MIB, "%s: MIB LOCAL: beacon_enable %d "
- "txautorate_fallback %d ssid_size %d promiscuous_mode %d "
- "preamble_type %d", priv->netdev->name, m->beacon_enable,
- m->txautorate_fallback, m->ssid_size, m->promiscuous_mode,
- m->preamble_type);
-exit:
- kfree(m);
-}
-
-static void at76_dump_mib_mdomain(struct at76_priv *priv)
-{
- int ret;
- struct mib_mdomain *m = kmalloc(sizeof(struct mib_mdomain), GFP_KERNEL);
-
- if (!m)
- return;
-
- ret = at76_get_mib(priv->udev, MIB_MDOMAIN, m,
- sizeof(struct mib_mdomain));
- if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib (MDOMAIN) failed: %d\n",
- priv->netdev->name, ret);
- goto exit;
- }
-
- at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: channel_list %s",
- priv->netdev->name,
- hex2str(m->channel_list, sizeof(m->channel_list)));
-
- at76_dbg(DBG_MIB, "%s: MIB MDOMAIN: tx_powerlevel %s",
- priv->netdev->name,
- hex2str(m->tx_powerlevel, sizeof(m->tx_powerlevel)));
-exit:
- kfree(m);
-}
-
-static int at76_get_current_bssid(struct at76_priv *priv)
-{
- int ret = 0;
- struct mib_mac_mgmt *mac_mgmt =
- kmalloc(sizeof(struct mib_mac_mgmt), GFP_KERNEL);
-
- if (!mac_mgmt) {
- ret = -ENOMEM;
- goto exit;
- }
-
- ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, mac_mgmt,
- sizeof(struct mib_mac_mgmt));
- if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib failed: %d\n",
- priv->netdev->name, ret);
- goto error;
- }
- memcpy(priv->bssid, mac_mgmt->current_bssid, ETH_ALEN);
- printk(KERN_INFO "%s: using BSSID %pM\n", priv->netdev->name,
- priv->bssid);
-error:
- kfree(mac_mgmt);
-exit:
- return ret;
-}
-
-static int at76_get_current_channel(struct at76_priv *priv)
-{
- int ret = 0;
- struct mib_phy *phy = kmalloc(sizeof(struct mib_phy), GFP_KERNEL);
-
- if (!phy) {
- ret = -ENOMEM;
- goto exit;
- }
- ret = at76_get_mib(priv->udev, MIB_PHY, phy, sizeof(struct mib_phy));
- if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib(MIB_PHY) failed: %d\n",
- priv->netdev->name, ret);
- goto error;
- }
- priv->channel = phy->channel_id;
-error:
- kfree(phy);
-exit:
- return ret;
-}
-
-/**
- * at76_start_scan - start a scan
- *
- * @use_essid - use the configured ESSID in non passive mode
- */
-static int at76_start_scan(struct at76_priv *priv, int use_essid)
-{
- struct at76_req_scan scan;
-
- memset(&scan, 0, sizeof(struct at76_req_scan));
- memset(scan.bssid, 0xff, ETH_ALEN);
-
- if (use_essid) {
- memcpy(scan.essid, priv->essid, IW_ESSID_MAX_SIZE);
- scan.essid_size = priv->essid_size;
- } else
- scan.essid_size = 0;
-
- /* jal: why should we start at a certain channel? we do scan the whole
- range allowed by reg domain. */
- scan.channel = priv->channel;
-
- /* atmelwlandriver differs between scan type 0 and 1 (active/passive)
- For ad-hoc mode, it uses type 0 only. */
- scan.scan_type = priv->scan_mode;
-
- /* INFO: For probe_delay, not multiplying by 1024 as this will be
- slightly less than min_channel_time
- (per spec: probe delay < min. channel time) */
- scan.min_channel_time = cpu_to_le16(priv->scan_min_time);
- scan.max_channel_time = cpu_to_le16(priv->scan_max_time);
- scan.probe_delay = cpu_to_le16(priv->scan_min_time * 1000);
- scan.international_scan = 0;
-
- /* other values are set to 0 for type 0 */
-
- at76_dbg(DBG_PROGRESS, "%s: start_scan (use_essid = %d, intl = %d, "
- "channel = %d, probe_delay = %d, scan_min_time = %d, "
- "scan_max_time = %d)",
- priv->netdev->name, use_essid,
- scan.international_scan, scan.channel,
- le16_to_cpu(scan.probe_delay),
- le16_to_cpu(scan.min_channel_time),
- le16_to_cpu(scan.max_channel_time));
-
- return at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
-}
-
-/* Enable monitor mode */
-static int at76_start_monitor(struct at76_priv *priv)
-{
- struct at76_req_scan scan;
- int ret;
-
- memset(&scan, 0, sizeof(struct at76_req_scan));
- memset(scan.bssid, 0xff, ETH_ALEN);
-
- scan.channel = priv->channel;
- scan.scan_type = SCAN_TYPE_PASSIVE;
- scan.international_scan = 0;
-
- ret = at76_set_card_command(priv->udev, CMD_SCAN, &scan, sizeof(scan));
- if (ret >= 0)
- ret = at76_get_cmd_status(priv->udev, CMD_SCAN);
-
- return ret;
-}
-
-static int at76_start_ibss(struct at76_priv *priv)
-{
- struct at76_req_ibss bss;
- int ret;
-
- WARN_ON(priv->mac_state != MAC_OWN_IBSS);
- if (priv->mac_state != MAC_OWN_IBSS)
- return -EBUSY;
-
- memset(&bss, 0, sizeof(struct at76_req_ibss));
- memset(bss.bssid, 0xff, ETH_ALEN);
- memcpy(bss.essid, priv->essid, IW_ESSID_MAX_SIZE);
- bss.essid_size = priv->essid_size;
- bss.bss_type = ADHOC_MODE;
- bss.channel = priv->channel;
-
- ret = at76_set_card_command(priv->udev, CMD_START_IBSS, &bss,
- sizeof(struct at76_req_ibss));
- if (ret < 0) {
- printk(KERN_ERR "%s: start_ibss failed: %d\n",
- priv->netdev->name, ret);
- return ret;
- }
-
- ret = at76_wait_completion(priv, CMD_START_IBSS);
- if (ret != CMD_STATUS_COMPLETE) {
- printk(KERN_ERR "%s: start_ibss failed to complete, %d\n",
- priv->netdev->name, ret);
- return ret;
- }
-
- ret = at76_get_current_bssid(priv);
- if (ret < 0)
- return ret;
-
- ret = at76_get_current_channel(priv);
- if (ret < 0)
- return ret;
-
- /* not sure what this is good for ??? */
- priv->mib_buf.type = MIB_MAC_MGMT;
- priv->mib_buf.size = 1;
- priv->mib_buf.index = offsetof(struct mib_mac_mgmt, ibss_change);
- priv->mib_buf.data.byte = 0;
-
- ret = at76_set_mib(priv, &priv->mib_buf);
- if (ret < 0) {
- printk(KERN_ERR "%s: set_mib (ibss change ok) failed: %d\n",
- priv->netdev->name, ret);
- return ret;
- }
-
- netif_carrier_on(priv->netdev);
- netif_start_queue(priv->netdev);
- return 0;
-}
-
-/* Request card to join BSS in managed or ad-hoc mode */
-static int at76_join_bss(struct at76_priv *priv, struct bss_info *ptr)
-{
- struct at76_req_join join;
-
- BUG_ON(!ptr);
-
- memset(&join, 0, sizeof(struct at76_req_join));
- memcpy(join.bssid, ptr->bssid, ETH_ALEN);
- memcpy(join.essid, ptr->ssid, ptr->ssid_len);
- join.essid_size = ptr->ssid_len;
- join.bss_type = (priv->iw_mode == IW_MODE_ADHOC ? 1 : 2);
- join.channel = ptr->channel;
- join.timeout = cpu_to_le16(2000);
-
- at76_dbg(DBG_PROGRESS,
- "%s join addr %pM ssid %s stype %d ch %d timeout %d",
- priv->netdev->name, join.bssid, join.essid,
- join.bss_type, join.channel, le16_to_cpu(join.timeout));
- return at76_set_card_command(priv->udev, CMD_JOIN, &join,
- sizeof(struct at76_req_join));
-}
-
-/* Calculate padding from txbuf->wlength (which excludes the USB TX header),
- likely to compensate a flaw in the AT76C503A USB part ... */
-static inline int at76_calc_padding(int wlen)
-{
- /* add the USB TX header */
- wlen += AT76_TX_HDRLEN;
-
- wlen = wlen % 64;
-
- if (wlen < 50)
- return 50 - wlen;
-
- if (wlen >= 61)
- return 64 + 50 - wlen;
-
- return 0;
-}
-
-/* We are doing a lot of things here in an interrupt. Need
- a bh handler (Watching TV with a TV card is probably
- a good test: if you see flickers, we are doing too much.
- Currently I do see flickers... even with our tasklet :-( )
- Maybe because the bttv driver and usb-uhci use the same interrupt
-*/
-/* Or maybe because our BH handler is preempting bttv's BH handler.. BHs don't
- * solve everything.. (alex) */
-static void at76_rx_callback(struct urb *urb)
-{
- struct at76_priv *priv = urb->context;
-
- priv->rx_tasklet.data = (unsigned long)urb;
- tasklet_schedule(&priv->rx_tasklet);
- return;
-}
-
-static void at76_tx_callback(struct urb *urb)
-{
- struct at76_priv *priv = urb->context;
- struct net_device_stats *stats = &priv->stats;
- unsigned long flags;
- struct at76_tx_buffer *mgmt_buf;
- int ret;
-
- switch (urb->status) {
- case 0:
- stats->tx_packets++;
- break;
- case -ENOENT:
- case -ECONNRESET:
- /* urb has been unlinked */
- return;
- default:
- at76_dbg(DBG_URB, "%s - nonzero tx status received: %d",
- __func__, urb->status);
- stats->tx_errors++;
- break;
- }
-
- spin_lock_irqsave(&priv->mgmt_spinlock, flags);
- mgmt_buf = priv->next_mgmt_bulk;
- priv->next_mgmt_bulk = NULL;
- spin_unlock_irqrestore(&priv->mgmt_spinlock, flags);
-
- if (!mgmt_buf) {
- netif_wake_queue(priv->netdev);
- return;
- }
-
- /* we don't copy the padding bytes, but add them
- to the length */
- memcpy(priv->bulk_out_buffer, mgmt_buf,
- le16_to_cpu(mgmt_buf->wlength) + AT76_TX_HDRLEN);
- usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe,
- priv->bulk_out_buffer,
- le16_to_cpu(mgmt_buf->wlength) + mgmt_buf->padding +
- AT76_TX_HDRLEN, at76_tx_callback, priv);
- ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
- if (ret)
- printk(KERN_ERR "%s: error in tx submit urb: %d\n",
- priv->netdev->name, ret);
-
- kfree(mgmt_buf);
-}
-
-/* Send a management frame on bulk-out. txbuf->wlength must be set */
-static int at76_tx_mgmt(struct at76_priv *priv, struct at76_tx_buffer *txbuf)
-{
- unsigned long flags;
- int ret;
- int urb_status;
- void *oldbuf = NULL;
-
- netif_carrier_off(priv->netdev); /* stop netdev watchdog */
- netif_stop_queue(priv->netdev); /* stop tx data packets */
-
- spin_lock_irqsave(&priv->mgmt_spinlock, flags);
-
- urb_status = priv->tx_urb->status;
- if (urb_status == -EINPROGRESS) {
- /* cannot transmit now, put in the queue */
- oldbuf = priv->next_mgmt_bulk;
- priv->next_mgmt_bulk = txbuf;
- }
- spin_unlock_irqrestore(&priv->mgmt_spinlock, flags);
-
- if (oldbuf) {
- /* a data/mgmt tx is already pending in the URB -
- if this is no error in some situations we must
- implement a queue or silently modify the old msg */
- printk(KERN_ERR "%s: removed pending mgmt buffer %s\n",
- priv->netdev->name, hex2str(oldbuf, 64));
- kfree(oldbuf);
- return 0;
- }
-
- txbuf->tx_rate = TX_RATE_1MBIT;
- txbuf->padding = at76_calc_padding(le16_to_cpu(txbuf->wlength));
- memset(txbuf->reserved, 0, sizeof(txbuf->reserved));
-
- if (priv->next_mgmt_bulk)
- printk(KERN_ERR "%s: URB status %d, but mgmt is pending\n",
- priv->netdev->name, urb_status);
-
- at76_dbg(DBG_TX_MGMT,
- "%s: tx mgmt: wlen %d tx_rate %d pad %d %s",
- priv->netdev->name, le16_to_cpu(txbuf->wlength),
- txbuf->tx_rate, txbuf->padding,
- hex2str(txbuf->packet, le16_to_cpu(txbuf->wlength)));
-
- /* txbuf was not consumed above -> send mgmt msg immediately */
- memcpy(priv->bulk_out_buffer, txbuf,
- le16_to_cpu(txbuf->wlength) + AT76_TX_HDRLEN);
- usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe,
- priv->bulk_out_buffer,
- le16_to_cpu(txbuf->wlength) + txbuf->padding +
- AT76_TX_HDRLEN, at76_tx_callback, priv);
- ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
- if (ret)
- printk(KERN_ERR "%s: error in tx submit urb: %d\n",
- priv->netdev->name, ret);
-
- kfree(txbuf);
-
- return ret;
-}
-
-/* Go to the next information element */
-static inline void next_ie(struct ieee80211_info_element **ie)
-{
- *ie = (struct ieee80211_info_element *)(&(*ie)->data[(*ie)->len]);
-}
-
-/* Challenge is the challenge string (in TLV format)
- we got with seq_nr 2 for shared secret authentication only and
- send in seq_nr 3 WEP encrypted to prove we have the correct WEP key;
- otherwise it is NULL */
-static int at76_auth_req(struct at76_priv *priv, struct bss_info *bss,
- int seq_nr, struct ieee80211_info_element *challenge)
-{
- struct at76_tx_buffer *tx_buffer;
- struct ieee80211_hdr_3addr *mgmt;
- struct ieee80211_auth *req;
- int buf_len = (seq_nr != 3 ? AUTH_FRAME_SIZE :
- AUTH_FRAME_SIZE + 1 + 1 + challenge->len);
-
- BUG_ON(!bss);
- BUG_ON(seq_nr == 3 && !challenge);
- tx_buffer = kmalloc(buf_len + MAX_PADDING_SIZE, GFP_ATOMIC);
- if (!tx_buffer)
- return -ENOMEM;
-
- req = (struct ieee80211_auth *)tx_buffer->packet;
- mgmt = &req->header;
-
- /* make wireless header */
- /* first auth msg is not encrypted, only the second (seq_nr == 3) */
- mgmt->frame_ctl =
- cpu_to_le16(IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_AUTH |
- (seq_nr == 3 ? IEEE80211_FCTL_PROTECTED : 0));
-
- mgmt->duration_id = cpu_to_le16(0x8000);
- memcpy(mgmt->addr1, bss->bssid, ETH_ALEN);
- memcpy(mgmt->addr2, priv->netdev->dev_addr, ETH_ALEN);
- memcpy(mgmt->addr3, bss->bssid, ETH_ALEN);
- mgmt->seq_ctl = cpu_to_le16(0);
-
- req->algorithm = cpu_to_le16(priv->auth_mode);
- req->transaction = cpu_to_le16(seq_nr);
- req->status = cpu_to_le16(0);
-
- if (seq_nr == 3)
- memcpy(req->info_element, challenge, 1 + 1 + challenge->len);
-
- /* init. at76_priv tx header */
- tx_buffer->wlength = cpu_to_le16(buf_len - AT76_TX_HDRLEN);
- at76_dbg(DBG_TX_MGMT, "%s: AuthReq bssid %pM alg %d seq_nr %d",
- priv->netdev->name, mgmt->addr3,
- le16_to_cpu(req->algorithm), le16_to_cpu(req->transaction));
- if (seq_nr == 3)
- at76_dbg(DBG_TX_MGMT, "%s: AuthReq challenge: %s ...",
- priv->netdev->name, hex2str(req->info_element, 18));
-
- /* either send immediately (if no data tx is pending
- or put it in pending list */
- return at76_tx_mgmt(priv, tx_buffer);
-}
-
-static int at76_assoc_req(struct at76_priv *priv, struct bss_info *bss)
-{
- struct at76_tx_buffer *tx_buffer;
- struct ieee80211_hdr_3addr *mgmt;
- struct ieee80211_assoc_request *req;
- struct ieee80211_info_element *ie;
- char *essid;
- int essid_len;
- u16 capa;
-
- BUG_ON(!bss);
-
- tx_buffer = kmalloc(ASSOCREQ_MAX_SIZE + MAX_PADDING_SIZE, GFP_ATOMIC);
- if (!tx_buffer)
- return -ENOMEM;
-
- req = (struct ieee80211_assoc_request *)tx_buffer->packet;
- mgmt = &req->header;
- ie = req->info_element;
-
- /* make wireless header */
- mgmt->frame_ctl = cpu_to_le16(IEEE80211_FTYPE_MGMT |
- IEEE80211_STYPE_ASSOC_REQ);
-
- mgmt->duration_id = cpu_to_le16(0x8000);
- memcpy(mgmt->addr1, bss->bssid, ETH_ALEN);
- memcpy(mgmt->addr2, priv->netdev->dev_addr, ETH_ALEN);
- memcpy(mgmt->addr3, bss->bssid, ETH_ALEN);
- mgmt->seq_ctl = cpu_to_le16(0);
-
- /* we must set the Privacy bit in the capabilities to assure an
- Agere-based AP with optional WEP transmits encrypted frames
- to us. AP only set the Privacy bit in their capabilities
- if WEP is mandatory in the BSS! */
- capa = bss->capa;
- if (priv->wep_enabled)
- capa |= WLAN_CAPABILITY_PRIVACY;
- if (priv->preamble_type != PREAMBLE_TYPE_LONG)
- capa |= WLAN_CAPABILITY_SHORT_PREAMBLE;
- req->capability = cpu_to_le16(capa);
-
- req->listen_interval = cpu_to_le16(2 * bss->beacon_interval);
-
- /* write TLV data elements */
-
- ie->id = WLAN_EID_SSID;
- ie->len = bss->ssid_len;
- memcpy(ie->data, bss->ssid, bss->ssid_len);
- next_ie(&ie);
-
- ie->id = WLAN_EID_SUPP_RATES;
- ie->len = sizeof(hw_rates);
- memcpy(ie->data, hw_rates, sizeof(hw_rates));
- next_ie(&ie); /* ie points behind the supp_rates field */
-
- /* init. at76_priv tx header */
- tx_buffer->wlength = cpu_to_le16((u8 *)ie - (u8 *)mgmt);
-
- ie = req->info_element;
- essid = ie->data;
- essid_len = min_t(int, IW_ESSID_MAX_SIZE, ie->len);
-
- next_ie(&ie); /* points to IE of rates now */
- at76_dbg(DBG_TX_MGMT,
- "%s: AssocReq bssid %pM capa 0x%04x ssid %.*s rates %s",
- priv->netdev->name, mgmt->addr3,
- le16_to_cpu(req->capability), essid_len, essid,
- hex2str(ie->data, ie->len));
-
- /* either send immediately (if no data tx is pending
- or put it in pending list */
- return at76_tx_mgmt(priv, tx_buffer);
-}
-
-/* We got to check the bss_list for old entries */
-static void at76_bss_list_timeout(unsigned long par)
-{
- struct at76_priv *priv = (struct at76_priv *)par;
- unsigned long flags;
- struct list_head *lptr, *nptr;
- struct bss_info *ptr;
-
- spin_lock_irqsave(&priv->bss_list_spinlock, flags);
-
- list_for_each_safe(lptr, nptr, &priv->bss_list) {
-
- ptr = list_entry(lptr, struct bss_info, list);
-
- if (ptr != priv->curr_bss
- && time_after(jiffies, ptr->last_rx + BSS_LIST_TIMEOUT)) {
- at76_dbg(DBG_BSS_TABLE_RM,
- "%s: bss_list: removing old BSS %pM ch %d",
- priv->netdev->name, ptr->bssid,
- ptr->channel);
- list_del(&ptr->list);
- kfree(ptr);
- }
- }
- spin_unlock_irqrestore(&priv->bss_list_spinlock, flags);
- /* restart the timer */
- mod_timer(&priv->bss_list_timer, jiffies + BSS_LIST_TIMEOUT);
-}
-
-static inline void at76_set_mac_state(struct at76_priv *priv,
- enum mac_state mac_state)
-{
- at76_dbg(DBG_MAC_STATE, "%s state: %s", priv->netdev->name,
- mac_states[mac_state]);
- priv->mac_state = mac_state;
-}
-
-static void at76_dump_bss_table(struct at76_priv *priv)
-{
- struct bss_info *ptr;
- unsigned long flags;
- struct list_head *lptr;
-
- spin_lock_irqsave(&priv->bss_list_spinlock, flags);
-
- at76_dbg(DBG_BSS_TABLE, "%s BSS table (curr=%p):", priv->netdev->name,
- priv->curr_bss);
-
- list_for_each(lptr, &priv->bss_list) {
- ptr = list_entry(lptr, struct bss_info, list);
- at76_dbg(DBG_BSS_TABLE, "0x%p: bssid %pM channel %d ssid %.*s "
- "(%s) capa 0x%04x rates %s rssi %d link %d noise %d",
- ptr, ptr->bssid, ptr->channel, ptr->ssid_len,
- ptr->ssid, hex2str(ptr->ssid, ptr->ssid_len),
- ptr->capa, hex2str(ptr->rates, ptr->rates_len),
- ptr->rssi, ptr->link_qual, ptr->noise_level);
- }
- spin_unlock_irqrestore(&priv->bss_list_spinlock, flags);
-}
-
-/* Called upon successful association to mark interface as connected */
-static void at76_work_assoc_done(struct work_struct *work)
-{
- struct at76_priv *priv = container_of(work, struct at76_priv,
- work_assoc_done);
-
- mutex_lock(&priv->mtx);
-
- WARN_ON(priv->mac_state != MAC_ASSOC);
- WARN_ON(!priv->curr_bss);
- if (priv->mac_state != MAC_ASSOC || !priv->curr_bss)
- goto exit;
-
- if (priv->iw_mode == IW_MODE_INFRA) {
- if (priv->pm_mode != AT76_PM_OFF) {
- /* calculate the listen interval in units of
- beacon intervals of the curr_bss */
- u32 pm_period_beacon = (priv->pm_period >> 10) /
- priv->curr_bss->beacon_interval;
-
- pm_period_beacon = max(pm_period_beacon, 2u);
- pm_period_beacon = min(pm_period_beacon, 0xffffu);
-
- at76_dbg(DBG_PM,
- "%s: pm_mode %d assoc id 0x%x listen int %d",
- priv->netdev->name, priv->pm_mode,
- priv->assoc_id, pm_period_beacon);
-
- at76_set_associd(priv, priv->assoc_id);
- at76_set_listen_interval(priv, (u16)pm_period_beacon);
- }
- schedule_delayed_work(&priv->dwork_beacon, BEACON_TIMEOUT);
- }
- at76_set_pm_mode(priv);
-
- netif_carrier_on(priv->netdev);
- netif_wake_queue(priv->netdev);
- at76_set_mac_state(priv, MAC_CONNECTED);
- at76_iwevent_bss_connect(priv->netdev, priv->curr_bss->bssid);
- at76_dbg(DBG_PROGRESS, "%s: connected to BSSID %pM",
- priv->netdev->name, priv->curr_bss->bssid);
-
-exit:
- mutex_unlock(&priv->mtx);
-}
-
-/* We only store the new mac address in netdev struct,
- it gets set when the netdev is opened. */
-static int at76_set_mac_address(struct net_device *netdev, void *addr)
-{
- struct sockaddr *mac = addr;
- memcpy(netdev->dev_addr, mac->sa_data, ETH_ALEN);
- return 1;
-}
-
-static struct net_device_stats *at76_get_stats(struct net_device *netdev)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- return &priv->stats;
-}
-
-static struct iw_statistics *at76_get_wireless_stats(struct net_device *netdev)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- at76_dbg(DBG_IOCTL, "RETURN qual %d level %d noise %d updated %d",
- priv->wstats.qual.qual, priv->wstats.qual.level,
- priv->wstats.qual.noise, priv->wstats.qual.updated);
-
- return &priv->wstats;
-}
-
-static void at76_set_multicast(struct net_device *netdev)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int promisc;
-
- promisc = ((netdev->flags & IFF_PROMISC) != 0);
- if (promisc != priv->promisc) {
- /* This gets called in interrupt, must reschedule */
- priv->promisc = promisc;
- schedule_work(&priv->work_set_promisc);
- }
-}
-
-/* Stop all network activity, flush all pending tasks */
-static void at76_quiesce(struct at76_priv *priv)
-{
- unsigned long flags;
-
- netif_stop_queue(priv->netdev);
- netif_carrier_off(priv->netdev);
-
- at76_set_mac_state(priv, MAC_INIT);
-
- cancel_delayed_work(&priv->dwork_get_scan);
- cancel_delayed_work(&priv->dwork_beacon);
- cancel_delayed_work(&priv->dwork_auth);
- cancel_delayed_work(&priv->dwork_assoc);
- cancel_delayed_work(&priv->dwork_restart);
-
- spin_lock_irqsave(&priv->mgmt_spinlock, flags);
- kfree(priv->next_mgmt_bulk);
- priv->next_mgmt_bulk = NULL;
- spin_unlock_irqrestore(&priv->mgmt_spinlock, flags);
-}
-
-/*******************************************************************************
- * at76_priv implementations of iw_handler functions:
- */
-static int at76_iw_handler_commit(struct net_device *netdev,
- struct iw_request_info *info,
- void *null, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- at76_dbg(DBG_IOCTL, "%s %s: restarting the device", netdev->name,
- __func__);
-
- if (priv->mac_state != MAC_INIT)
- at76_quiesce(priv);
-
- /* Wait half second before the restart to process subsequent
- * requests from the same iwconfig in a single restart */
- schedule_delayed_work(&priv->dwork_restart, HZ / 2);
-
- return 0;
-}
-
-static int at76_iw_handler_get_name(struct net_device *netdev,
- struct iw_request_info *info,
- char *name, char *extra)
-{
- strcpy(name, "IEEE 802.11b");
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWNAME - name %s", netdev->name, name);
- return 0;
-}
-
-static int at76_iw_handler_set_freq(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_freq *freq, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int chan = -1;
- int ret = -EIWCOMMIT;
- at76_dbg(DBG_IOCTL, "%s: SIOCSIWFREQ - freq.m %d freq.e %d",
- netdev->name, freq->m, freq->e);
-
- if ((freq->e == 0) && (freq->m <= 1000))
- /* Setting by channel number */
- chan = freq->m;
- else {
- /* Setting by frequency - search the table */
- int mult = 1;
- int i;
-
- for (i = 0; i < (6 - freq->e); i++)
- mult *= 10;
-
- for (i = 0; i < NUM_CHANNELS; i++) {
- if (freq->m == (channel_frequency[i] * mult))
- chan = i + 1;
- }
- }
-
- if (chan < 1 || !priv->domain)
- /* non-positive channels are invalid
- * we need a domain info to set the channel
- * either that or an invalid frequency was
- * provided by the user */
- ret = -EINVAL;
- else if (!(priv->domain->channel_map & (1 << (chan - 1)))) {
- printk(KERN_INFO "%s: channel %d not allowed for domain %s\n",
- priv->netdev->name, chan, priv->domain->name);
- ret = -EINVAL;
- }
-
- if (ret == -EIWCOMMIT) {
- priv->channel = chan;
- at76_dbg(DBG_IOCTL, "%s: SIOCSIWFREQ - ch %d", netdev->name,
- chan);
- }
-
- return ret;
-}
-
-static int at76_iw_handler_get_freq(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_freq *freq, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- freq->m = priv->channel;
- freq->e = 0;
-
- if (priv->channel)
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWFREQ - freq %ld x 10e%d",
- netdev->name, channel_frequency[priv->channel - 1], 6);
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWFREQ - ch %d", netdev->name,
- priv->channel);
-
- return 0;
-}
-
-static int at76_iw_handler_set_mode(struct net_device *netdev,
- struct iw_request_info *info,
- __u32 *mode, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- at76_dbg(DBG_IOCTL, "%s: SIOCSIWMODE - %d", netdev->name, *mode);
-
- if ((*mode != IW_MODE_ADHOC) && (*mode != IW_MODE_INFRA) &&
- (*mode != IW_MODE_MONITOR))
- return -EINVAL;
-
- priv->iw_mode = *mode;
- if (priv->iw_mode != IW_MODE_INFRA)
- priv->pm_mode = AT76_PM_OFF;
-
- return -EIWCOMMIT;
-}
-
-static int at76_iw_handler_get_mode(struct net_device *netdev,
- struct iw_request_info *info,
- __u32 *mode, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- *mode = priv->iw_mode;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWMODE - %d", netdev->name, *mode);
-
- return 0;
-}
-
-static int at76_iw_handler_get_range(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- /* inspired by atmel.c */
- struct at76_priv *priv = netdev_priv(netdev);
- struct iw_range *range = (struct iw_range *)extra;
- int i;
-
- data->length = sizeof(struct iw_range);
- memset(range, 0, sizeof(struct iw_range));
-
- /* TODO: range->throughput = xxxxxx; */
-
- range->min_nwid = 0x0000;
- range->max_nwid = 0x0000;
-
- /* this driver doesn't maintain sensitivity information */
- range->sensitivity = 0;
-
- range->max_qual.qual = 100;
- range->max_qual.level = 100;
- range->max_qual.noise = 0;
- range->max_qual.updated = IW_QUAL_NOISE_INVALID;
-
- range->avg_qual.qual = 50;
- range->avg_qual.level = 50;
- range->avg_qual.noise = 0;
- range->avg_qual.updated = IW_QUAL_NOISE_INVALID;
-
- range->bitrate[0] = 1000000;
- range->bitrate[1] = 2000000;
- range->bitrate[2] = 5500000;
- range->bitrate[3] = 11000000;
- range->num_bitrates = 4;
-
- range->min_rts = 0;
- range->max_rts = MAX_RTS_THRESHOLD;
-
- range->min_frag = MIN_FRAG_THRESHOLD;
- range->max_frag = MAX_FRAG_THRESHOLD;
-
- range->pmp_flags = IW_POWER_PERIOD;
- range->pmt_flags = IW_POWER_ON;
- range->pm_capa = IW_POWER_PERIOD | IW_POWER_ALL_R;
-
- range->encoding_size[0] = WEP_SMALL_KEY_LEN;
- range->encoding_size[1] = WEP_LARGE_KEY_LEN;
- range->num_encoding_sizes = 2;
- range->max_encoding_tokens = WEP_KEYS;
-
- /* both WL-240U and Linksys WUSB11 v2.6 specify 15 dBm as output power
- - take this for all (ignore antenna gains) */
- range->txpower[0] = 15;
- range->num_txpower = 1;
- range->txpower_capa = IW_TXPOW_DBM;
-
- range->we_version_source = WIRELESS_EXT;
- range->we_version_compiled = WIRELESS_EXT;
-
- /* same as the values used in atmel.c */
- range->retry_capa = IW_RETRY_LIMIT;
- range->retry_flags = IW_RETRY_LIMIT;
- range->r_time_flags = 0;
- range->min_retry = 1;
- range->max_retry = 255;
-
- range->num_channels = NUM_CHANNELS;
- range->num_frequency = 0;
-
- for (i = 0; i < NUM_CHANNELS; i++) {
- /* test if channel map bit is raised */
- if (priv->domain->channel_map & (0x1 << i)) {
- range->num_frequency += 1;
-
- range->freq[i].i = i + 1;
- range->freq[i].m = channel_frequency[i] * 100000;
- range->freq[i].e = 1; /* freq * 10^1 */
- }
- }
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWRANGE", netdev->name);
-
- return 0;
-}
-
-static int at76_iw_handler_set_spy(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int ret = 0;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCSIWSPY - number of addresses %d",
- netdev->name, data->length);
-
- spin_lock_bh(&priv->spy_spinlock);
- ret = iw_handler_set_spy(priv->netdev, info, (union iwreq_data *)data,
- extra);
- spin_unlock_bh(&priv->spy_spinlock);
-
- return ret;
-}
-
-static int at76_iw_handler_get_spy(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
-
- struct at76_priv *priv = netdev_priv(netdev);
- int ret = 0;
-
- spin_lock_bh(&priv->spy_spinlock);
- ret = iw_handler_get_spy(priv->netdev, info,
- (union iwreq_data *)data, extra);
- spin_unlock_bh(&priv->spy_spinlock);
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWSPY - number of addresses %d",
- netdev->name, data->length);
-
- return ret;
-}
-
-static int at76_iw_handler_set_thrspy(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int ret;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCSIWTHRSPY - number of addresses %d)",
- netdev->name, data->length);
-
- spin_lock_bh(&priv->spy_spinlock);
- ret = iw_handler_set_thrspy(netdev, info, (union iwreq_data *)data,
- extra);
- spin_unlock_bh(&priv->spy_spinlock);
-
- return ret;
-}
-
-static int at76_iw_handler_get_thrspy(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int ret;
-
- spin_lock_bh(&priv->spy_spinlock);
- ret = iw_handler_get_thrspy(netdev, info, (union iwreq_data *)data,
- extra);
- spin_unlock_bh(&priv->spy_spinlock);
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWTHRSPY - number of addresses %d)",
- netdev->name, data->length);
-
- return ret;
-}
-
-static int at76_iw_handler_set_wap(struct net_device *netdev,
- struct iw_request_info *info,
- struct sockaddr *ap_addr, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- at76_dbg(DBG_IOCTL, "%s: SIOCSIWAP - wap/bssid %pM", netdev->name,
- ap_addr->sa_data);
-
- /* if the incoming address == ff:ff:ff:ff:ff:ff, the user has
- chosen any or auto AP preference */
- if (is_broadcast_ether_addr(ap_addr->sa_data)
- || is_zero_ether_addr(ap_addr->sa_data))
- priv->wanted_bssid_valid = 0;
- else {
- /* user wants to set a preferred AP address */
- priv->wanted_bssid_valid = 1;
- memcpy(priv->wanted_bssid, ap_addr->sa_data, ETH_ALEN);
- }
-
- return -EIWCOMMIT;
-}
-
-static int at76_iw_handler_get_wap(struct net_device *netdev,
- struct iw_request_info *info,
- struct sockaddr *ap_addr, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- ap_addr->sa_family = ARPHRD_ETHER;
- memcpy(ap_addr->sa_data, priv->bssid, ETH_ALEN);
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWAP - wap/bssid %pM", netdev->name,
- ap_addr->sa_data);
-
- return 0;
-}
-
-static int at76_iw_handler_set_scan(struct net_device *netdev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int ret = 0;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCSIWSCAN", netdev->name);
-
- if (mutex_lock_interruptible(&priv->mtx))
- return -EINTR;
-
- if (!netif_running(netdev)) {
- ret = -ENETDOWN;
- goto exit;
- }
-
- /* jal: we don't allow "iwlist ethX scan" while we are
- in monitor mode */
- if (priv->iw_mode == IW_MODE_MONITOR) {
- ret = -EBUSY;
- goto exit;
- }
-
- /* Discard old scan results */
- if ((jiffies - priv->last_scan) > (20 * HZ))
- priv->scan_state = SCAN_IDLE;
- priv->last_scan = jiffies;
-
- /* Initiate a scan command */
- if (priv->scan_state == SCAN_IN_PROGRESS) {
- ret = -EBUSY;
- goto exit;
- }
-
- priv->scan_state = SCAN_IN_PROGRESS;
-
- at76_quiesce(priv);
-
- /* Try to do passive or active scan if WE asks as. */
- if (wrqu->data.length
- && wrqu->data.length == sizeof(struct iw_scan_req)) {
- struct iw_scan_req *req = (struct iw_scan_req *)extra;
-
- if (req->scan_type == IW_SCAN_TYPE_PASSIVE)
- priv->scan_mode = SCAN_TYPE_PASSIVE;
- else if (req->scan_type == IW_SCAN_TYPE_ACTIVE)
- priv->scan_mode = SCAN_TYPE_ACTIVE;
-
- /* Sanity check values? */
- if (req->min_channel_time > 0)
- priv->scan_min_time = req->min_channel_time;
-
- if (req->max_channel_time > 0)
- priv->scan_max_time = req->max_channel_time;
- }
-
- /* change to scanning state */
- at76_set_mac_state(priv, MAC_SCANNING);
- schedule_work(&priv->work_start_scan);
-
-exit:
- mutex_unlock(&priv->mtx);
- return ret;
-}
-
-static int at76_iw_handler_get_scan(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- unsigned long flags;
- struct list_head *lptr, *nptr;
- struct bss_info *curr_bss;
- struct iw_event *iwe = kmalloc(sizeof(struct iw_event), GFP_KERNEL);
- char *curr_val, *curr_pos = extra;
- int i;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWSCAN", netdev->name);
-
- if (!iwe)
- return -ENOMEM;
-
- if (priv->scan_state != SCAN_COMPLETED) {
- /* scan not yet finished */
- kfree(iwe);
- return -EAGAIN;
- }
-
- spin_lock_irqsave(&priv->bss_list_spinlock, flags);
-
- list_for_each_safe(lptr, nptr, &priv->bss_list) {
- curr_bss = list_entry(lptr, struct bss_info, list);
-
- iwe->cmd = SIOCGIWAP;
- iwe->u.ap_addr.sa_family = ARPHRD_ETHER;
- memcpy(iwe->u.ap_addr.sa_data, curr_bss->bssid, 6);
- curr_pos = iwe_stream_add_event(info, curr_pos,
- extra + IW_SCAN_MAX_DATA, iwe,
- IW_EV_ADDR_LEN);
-
- iwe->u.data.length = curr_bss->ssid_len;
- iwe->cmd = SIOCGIWESSID;
- iwe->u.data.flags = 1;
-
- curr_pos = iwe_stream_add_point(info, curr_pos,
- extra + IW_SCAN_MAX_DATA, iwe,
- curr_bss->ssid);
-
- iwe->cmd = SIOCGIWMODE;
- iwe->u.mode = (curr_bss->capa & WLAN_CAPABILITY_IBSS) ?
- IW_MODE_ADHOC :
- (curr_bss->capa & WLAN_CAPABILITY_ESS) ?
- IW_MODE_MASTER : IW_MODE_AUTO;
- /* IW_MODE_AUTO = 0 which I thought is
- * the most logical value to return in this case */
- curr_pos = iwe_stream_add_event(info, curr_pos,
- extra + IW_SCAN_MAX_DATA, iwe,
- IW_EV_UINT_LEN);
-
- iwe->cmd = SIOCGIWFREQ;
- iwe->u.freq.m = curr_bss->channel;
- iwe->u.freq.e = 0;
- curr_pos = iwe_stream_add_event(info, curr_pos,
- extra + IW_SCAN_MAX_DATA, iwe,
- IW_EV_FREQ_LEN);
-
- iwe->cmd = SIOCGIWENCODE;
- if (curr_bss->capa & WLAN_CAPABILITY_PRIVACY)
- iwe->u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
- else
- iwe->u.data.flags = IW_ENCODE_DISABLED;
-
- iwe->u.data.length = 0;
- curr_pos = iwe_stream_add_point(info, curr_pos,
- extra + IW_SCAN_MAX_DATA, iwe,
- NULL);
-
- /* Add quality statistics */
- iwe->cmd = IWEVQUAL;
- iwe->u.qual.noise = 0;
- iwe->u.qual.updated =
- IW_QUAL_NOISE_INVALID | IW_QUAL_LEVEL_UPDATED;
- iwe->u.qual.level = (curr_bss->rssi * 100 / 42);
- if (iwe->u.qual.level > 100)
- iwe->u.qual.level = 100;
- if (at76_is_intersil(priv->board_type))
- iwe->u.qual.qual = curr_bss->link_qual;
- else {
- iwe->u.qual.qual = 0;
- iwe->u.qual.updated |= IW_QUAL_QUAL_INVALID;
- }
- /* Add new value to event */
- curr_pos = iwe_stream_add_event(info, curr_pos,
- extra + IW_SCAN_MAX_DATA, iwe,
- IW_EV_QUAL_LEN);
-
- /* Rate: stuffing multiple values in a single event requires
- * a bit more of magic - Jean II */
- curr_val = curr_pos + IW_EV_LCP_LEN;
-
- iwe->cmd = SIOCGIWRATE;
- /* Those two flags are ignored... */
- iwe->u.bitrate.fixed = 0;
- iwe->u.bitrate.disabled = 0;
- /* Max 8 values */
- for (i = 0; i < curr_bss->rates_len; i++) {
- /* Bit rate given in 500 kb/s units (+ 0x80) */
- iwe->u.bitrate.value =
- ((curr_bss->rates[i] & 0x7f) * 500000);
- /* Add new value to event */
- curr_val = iwe_stream_add_value(info, curr_pos,
- curr_val,
- extra +
- IW_SCAN_MAX_DATA, iwe,
- IW_EV_PARAM_LEN);
- }
-
- /* Check if we added any event */
- if ((curr_val - curr_pos) > IW_EV_LCP_LEN)
- curr_pos = curr_val;
-
- /* more information may be sent back using IWECUSTOM */
-
- }
-
- spin_unlock_irqrestore(&priv->bss_list_spinlock, flags);
-
- data->length = (curr_pos - extra);
- data->flags = 0;
-
- kfree(iwe);
- return 0;
-}
-
-static int at76_iw_handler_set_essid(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- at76_dbg(DBG_IOCTL, "%s: SIOCSIWESSID - %s", netdev->name, extra);
-
- if (data->flags) {
- memcpy(priv->essid, extra, data->length);
- priv->essid_size = data->length;
- } else
- priv->essid_size = 0; /* Use any SSID */
-
- return -EIWCOMMIT;
-}
-
-static int at76_iw_handler_get_essid(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- if (priv->essid_size) {
- /* not the ANY ssid in priv->essid */
- data->flags = 1;
- data->length = priv->essid_size;
- memcpy(extra, priv->essid, data->length);
- } else {
- /* the ANY ssid was specified */
- if (priv->mac_state == MAC_CONNECTED && priv->curr_bss) {
- /* report the SSID we have found */
- data->flags = 1;
- data->length = priv->curr_bss->ssid_len;
- memcpy(extra, priv->curr_bss->ssid, data->length);
- } else {
- /* report ANY back */
- data->flags = 0;
- data->length = 0;
- }
- }
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWESSID - %.*s", netdev->name,
- data->length, extra);
-
- return 0;
-}
-
-static int at76_iw_handler_set_rate(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_param *bitrate, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int ret = -EIWCOMMIT;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCSIWRATE - %d", netdev->name,
- bitrate->value);
-
- switch (bitrate->value) {
- case -1:
- priv->txrate = TX_RATE_AUTO;
- break; /* auto rate */
- case 1000000:
- priv->txrate = TX_RATE_1MBIT;
- break;
- case 2000000:
- priv->txrate = TX_RATE_2MBIT;
- break;
- case 5500000:
- priv->txrate = TX_RATE_5_5MBIT;
- break;
- case 11000000:
- priv->txrate = TX_RATE_11MBIT;
- break;
- default:
- ret = -EINVAL;
- }
-
- return ret;
-}
-
-static int at76_iw_handler_get_rate(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_param *bitrate, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int ret = 0;
-
- switch (priv->txrate) {
- /* return max rate if RATE_AUTO */
- case TX_RATE_AUTO:
- bitrate->value = 11000000;
- break;
- case TX_RATE_1MBIT:
- bitrate->value = 1000000;
- break;
- case TX_RATE_2MBIT:
- bitrate->value = 2000000;
- break;
- case TX_RATE_5_5MBIT:
- bitrate->value = 5500000;
- break;
- case TX_RATE_11MBIT:
- bitrate->value = 11000000;
- break;
- default:
- ret = -EINVAL;
- }
-
- bitrate->fixed = (priv->txrate != TX_RATE_AUTO);
- bitrate->disabled = 0;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWRATE - %d", netdev->name,
- bitrate->value);
-
- return ret;
-}
-
-static int at76_iw_handler_set_rts(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_param *rts, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int ret = -EIWCOMMIT;
- int rthr = rts->value;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCSIWRTS - value %d disabled %s",
- netdev->name, rts->value, (rts->disabled) ? "true" : "false");
-
- if (rts->disabled)
- rthr = MAX_RTS_THRESHOLD;
-
- if ((rthr < 0) || (rthr > MAX_RTS_THRESHOLD))
- ret = -EINVAL;
- else
- priv->rts_threshold = rthr;
-
- return ret;
-}
-
-static int at76_iw_handler_get_rts(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_param *rts, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- rts->value = priv->rts_threshold;
- rts->disabled = (rts->value >= MAX_RTS_THRESHOLD);
- rts->fixed = 1;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWRTS - value %d disabled %s",
- netdev->name, rts->value, (rts->disabled) ? "true" : "false");
-
- return 0;
-}
-
-static int at76_iw_handler_set_frag(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_param *frag, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int ret = -EIWCOMMIT;
- int fthr = frag->value;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCSIWFRAG - value %d, disabled %s",
- netdev->name, frag->value,
- (frag->disabled) ? "true" : "false");
-
- if (frag->disabled)
- fthr = MAX_FRAG_THRESHOLD;
-
- if ((fthr < MIN_FRAG_THRESHOLD) || (fthr > MAX_FRAG_THRESHOLD))
- ret = -EINVAL;
- else
- priv->frag_threshold = fthr & ~0x1; /* get an even value */
-
- return ret;
-}
-
-static int at76_iw_handler_get_frag(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_param *frag, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- frag->value = priv->frag_threshold;
- frag->disabled = (frag->value >= MAX_FRAG_THRESHOLD);
- frag->fixed = 1;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWFRAG - value %d, disabled %s",
- netdev->name, frag->value,
- (frag->disabled) ? "true" : "false");
-
- return 0;
-}
-
-static int at76_iw_handler_get_txpow(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_param *power, char *extra)
-{
- power->value = 15;
- power->fixed = 1; /* No power control */
- power->disabled = 0;
- power->flags = IW_TXPOW_DBM;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWTXPOW - txpow %d dBm", netdev->name,
- power->value);
-
- return 0;
-}
-
-/* jal: short retry is handled by the firmware (at least 0.90.x),
- while long retry is not (?) */
-static int at76_iw_handler_set_retry(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_param *retry, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int ret = -EIWCOMMIT;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCSIWRETRY disabled %d flags 0x%x val %d",
- netdev->name, retry->disabled, retry->flags, retry->value);
-
- if (!retry->disabled && (retry->flags & IW_RETRY_LIMIT)) {
- if ((retry->flags & IW_RETRY_MIN) ||
- !(retry->flags & IW_RETRY_MAX))
- priv->short_retry_limit = retry->value;
- else
- ret = -EINVAL;
- } else
- ret = -EINVAL;
-
- return ret;
-}
-
-/* Adapted (ripped) from atmel.c */
-static int at76_iw_handler_get_retry(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_param *retry, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWRETRY", netdev->name);
-
- retry->disabled = 0; /* Can't be disabled */
- retry->flags = IW_RETRY_LIMIT;
- retry->value = priv->short_retry_limit;
-
- return 0;
-}
-
-static int at76_iw_handler_set_encode(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_point *encoding, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int index = (encoding->flags & IW_ENCODE_INDEX) - 1;
- int len = encoding->length;
-
- at76_dbg(DBG_IOCTL, "%s: SIOCSIWENCODE - enc.flags %08x "
- "pointer %p len %d", netdev->name, encoding->flags,
- encoding->pointer, encoding->length);
- at76_dbg(DBG_IOCTL,
- "%s: SIOCSIWENCODE - old wepstate: enabled %s key_id %d "
- "auth_mode %s", netdev->name,
- (priv->wep_enabled) ? "true" : "false", priv->wep_key_id,
- (priv->auth_mode ==
- WLAN_AUTH_SHARED_KEY) ? "restricted" : "open");
-
- /* take the old default key if index is invalid */
- if ((index < 0) || (index >= WEP_KEYS))
- index = priv->wep_key_id;
-
- if (len > 0) {
- if (len > WEP_LARGE_KEY_LEN)
- len = WEP_LARGE_KEY_LEN;
-
- memset(priv->wep_keys[index], 0, WEP_KEY_LEN);
- memcpy(priv->wep_keys[index], extra, len);
- priv->wep_keys_len[index] = (len <= WEP_SMALL_KEY_LEN) ?
- WEP_SMALL_KEY_LEN : WEP_LARGE_KEY_LEN;
- priv->wep_enabled = 1;
- }
-
- priv->wep_key_id = index;
- priv->wep_enabled = ((encoding->flags & IW_ENCODE_DISABLED) == 0);
-
- if (encoding->flags & IW_ENCODE_RESTRICTED)
- priv->auth_mode = WLAN_AUTH_SHARED_KEY;
- if (encoding->flags & IW_ENCODE_OPEN)
- priv->auth_mode = WLAN_AUTH_OPEN;
-
- at76_dbg(DBG_IOCTL,
- "%s: SIOCSIWENCODE - new wepstate: enabled %s key_id %d "
- "key_len %d auth_mode %s", netdev->name,
- (priv->wep_enabled) ? "true" : "false", priv->wep_key_id + 1,
- priv->wep_keys_len[priv->wep_key_id],
- (priv->auth_mode ==
- WLAN_AUTH_SHARED_KEY) ? "restricted" : "open");
-
- return -EIWCOMMIT;
-}
-
-static int at76_iw_handler_get_encode(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_point *encoding, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int index = (encoding->flags & IW_ENCODE_INDEX) - 1;
-
- if ((index < 0) || (index >= WEP_KEYS))
- index = priv->wep_key_id;
-
- encoding->flags =
- (priv->auth_mode == WLAN_AUTH_SHARED_KEY) ?
- IW_ENCODE_RESTRICTED : IW_ENCODE_OPEN;
-
- if (!priv->wep_enabled)
- encoding->flags |= IW_ENCODE_DISABLED;
-
- if (encoding->pointer) {
- encoding->length = priv->wep_keys_len[index];
-
- memcpy(extra, priv->wep_keys[index], priv->wep_keys_len[index]);
-
- encoding->flags |= (index + 1);
- }
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWENCODE - enc.flags %08x "
- "pointer %p len %d", netdev->name, encoding->flags,
- encoding->pointer, encoding->length);
- at76_dbg(DBG_IOCTL,
- "%s: SIOCGIWENCODE - wepstate: enabled %s key_id %d "
- "key_len %d auth_mode %s", netdev->name,
- (priv->wep_enabled) ? "true" : "false", priv->wep_key_id + 1,
- priv->wep_keys_len[priv->wep_key_id],
- (priv->auth_mode ==
- WLAN_AUTH_SHARED_KEY) ? "restricted" : "open");
-
- return 0;
-}
-
-static int at76_iw_handler_set_power(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_param *prq, char *extra)
-{
- int err = -EIWCOMMIT;
- struct at76_priv *priv = netdev_priv(netdev);
-
- at76_dbg(DBG_IOCTL,
- "%s: SIOCSIWPOWER - disabled %s flags 0x%x value 0x%x",
- netdev->name, (prq->disabled) ? "true" : "false", prq->flags,
- prq->value);
-
- if (prq->disabled)
- priv->pm_mode = AT76_PM_OFF;
- else {
- switch (prq->flags & IW_POWER_MODE) {
- case IW_POWER_ALL_R:
- case IW_POWER_ON:
- break;
- default:
- err = -EINVAL;
- goto exit;
- }
- if (prq->flags & IW_POWER_PERIOD)
- priv->pm_period = prq->value;
-
- if (prq->flags & IW_POWER_TIMEOUT) {
- err = -EINVAL;
- goto exit;
- }
- priv->pm_mode = AT76_PM_ON;
- }
-exit:
- return err;
-}
-
-static int at76_iw_handler_get_power(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_param *power, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- power->disabled = (priv->pm_mode == AT76_PM_OFF);
- if (!power->disabled) {
- power->flags = IW_POWER_PERIOD | IW_POWER_ALL_R;
- power->value = priv->pm_period;
- }
-
- at76_dbg(DBG_IOCTL, "%s: SIOCGIWPOWER - %s flags 0x%x value 0x%x",
- netdev->name, power->disabled ? "disabled" : "enabled",
- power->flags, power->value);
-
- return 0;
-}
-
-/*******************************************************************************
- * Private IOCTLS
- */
-static int at76_iw_set_short_preamble(struct net_device *netdev,
- struct iw_request_info *info, char *name,
- char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int val = *((int *)name);
- int ret = -EIWCOMMIT;
-
- at76_dbg(DBG_IOCTL, "%s: AT76_SET_SHORT_PREAMBLE, %d",
- netdev->name, val);
-
- if (val < PREAMBLE_TYPE_LONG || val > PREAMBLE_TYPE_AUTO)
- ret = -EINVAL;
- else
- priv->preamble_type = val;
-
- return ret;
-}
-
-static int at76_iw_get_short_preamble(struct net_device *netdev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- snprintf(wrqu->name, sizeof(wrqu->name), "%s (%d)",
- preambles[priv->preamble_type], priv->preamble_type);
- return 0;
-}
-
-static int at76_iw_set_debug(struct net_device *netdev,
- struct iw_request_info *info,
- struct iw_point *data, char *extra)
-{
- char *ptr;
- u32 val;
-
- if (data->length > 0) {
- val = simple_strtol(extra, &ptr, 0);
-
- if (ptr == extra)
- val = DBG_DEFAULTS;
-
- at76_dbg(DBG_IOCTL, "%s: AT76_SET_DEBUG input %d: %s -> 0x%x",
- netdev->name, data->length, extra, val);
- } else
- val = DBG_DEFAULTS;
-
- at76_dbg(DBG_IOCTL, "%s: AT76_SET_DEBUG, old 0x%x, new 0x%x",
- netdev->name, at76_debug, val);
-
- /* jal: some more output to pin down lockups */
- at76_dbg(DBG_IOCTL, "%s: netif running %d queue_stopped %d "
- "carrier_ok %d", netdev->name, netif_running(netdev),
- netif_queue_stopped(netdev), netif_carrier_ok(netdev));
-
- at76_debug = val;
-
- return 0;
-}
-
-static int at76_iw_get_debug(struct net_device *netdev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- snprintf(wrqu->name, sizeof(wrqu->name), "0x%08x", at76_debug);
- return 0;
-}
-
-static int at76_iw_set_powersave_mode(struct net_device *netdev,
- struct iw_request_info *info, char *name,
- char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int val = *((int *)name);
- int ret = -EIWCOMMIT;
-
- at76_dbg(DBG_IOCTL, "%s: AT76_SET_POWERSAVE_MODE, %d (%s)",
- netdev->name, val,
- val == AT76_PM_OFF ? "active" : val == AT76_PM_ON ? "save" :
- val == AT76_PM_SMART ? "smart save" : "<invalid>");
- if (val < AT76_PM_OFF || val > AT76_PM_SMART)
- ret = -EINVAL;
- else
- priv->pm_mode = val;
-
- return ret;
-}
-
-static int at76_iw_get_powersave_mode(struct net_device *netdev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int *param = (int *)extra;
-
- param[0] = priv->pm_mode;
- return 0;
-}
-
-static int at76_iw_set_scan_times(struct net_device *netdev,
- struct iw_request_info *info, char *name,
- char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int mint = *((int *)name);
- int maxt = *((int *)name + 1);
- int ret = -EIWCOMMIT;
-
- at76_dbg(DBG_IOCTL, "%s: AT76_SET_SCAN_TIMES - min %d max %d",
- netdev->name, mint, maxt);
- if (mint <= 0 || maxt <= 0 || mint > maxt)
- ret = -EINVAL;
- else {
- priv->scan_min_time = mint;
- priv->scan_max_time = maxt;
- }
-
- return ret;
-}
-
-static int at76_iw_get_scan_times(struct net_device *netdev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int *param = (int *)extra;
-
- param[0] = priv->scan_min_time;
- param[1] = priv->scan_max_time;
- return 0;
-}
-
-static int at76_iw_set_scan_mode(struct net_device *netdev,
- struct iw_request_info *info, char *name,
- char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int val = *((int *)name);
- int ret = -EIWCOMMIT;
-
- at76_dbg(DBG_IOCTL, "%s: AT76_SET_SCAN_MODE - mode %s",
- netdev->name, (val = SCAN_TYPE_ACTIVE) ? "active" :
- (val = SCAN_TYPE_PASSIVE) ? "passive" : "<invalid>");
-
- if (val != SCAN_TYPE_ACTIVE && val != SCAN_TYPE_PASSIVE)
- ret = -EINVAL;
- else
- priv->scan_mode = val;
-
- return ret;
-}
-
-static int at76_iw_get_scan_mode(struct net_device *netdev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int *param = (int *)extra;
-
- param[0] = priv->scan_mode;
- return 0;
-}
-
-#define AT76_SET_HANDLER(h, f) [h - SIOCIWFIRST] = (iw_handler) f
-
-/* Standard wireless handlers */
-static const iw_handler at76_handlers[] = {
- AT76_SET_HANDLER(SIOCSIWCOMMIT, at76_iw_handler_commit),
- AT76_SET_HANDLER(SIOCGIWNAME, at76_iw_handler_get_name),
- AT76_SET_HANDLER(SIOCSIWFREQ, at76_iw_handler_set_freq),
- AT76_SET_HANDLER(SIOCGIWFREQ, at76_iw_handler_get_freq),
- AT76_SET_HANDLER(SIOCSIWMODE, at76_iw_handler_set_mode),
- AT76_SET_HANDLER(SIOCGIWMODE, at76_iw_handler_get_mode),
- AT76_SET_HANDLER(SIOCGIWRANGE, at76_iw_handler_get_range),
- AT76_SET_HANDLER(SIOCSIWSPY, at76_iw_handler_set_spy),
- AT76_SET_HANDLER(SIOCGIWSPY, at76_iw_handler_get_spy),
- AT76_SET_HANDLER(SIOCSIWTHRSPY, at76_iw_handler_set_thrspy),
- AT76_SET_HANDLER(SIOCGIWTHRSPY, at76_iw_handler_get_thrspy),
- AT76_SET_HANDLER(SIOCSIWAP, at76_iw_handler_set_wap),
- AT76_SET_HANDLER(SIOCGIWAP, at76_iw_handler_get_wap),
- AT76_SET_HANDLER(SIOCSIWSCAN, at76_iw_handler_set_scan),
- AT76_SET_HANDLER(SIOCGIWSCAN, at76_iw_handler_get_scan),
- AT76_SET_HANDLER(SIOCSIWESSID, at76_iw_handler_set_essid),
- AT76_SET_HANDLER(SIOCGIWESSID, at76_iw_handler_get_essid),
- AT76_SET_HANDLER(SIOCSIWRATE, at76_iw_handler_set_rate),
- AT76_SET_HANDLER(SIOCGIWRATE, at76_iw_handler_get_rate),
- AT76_SET_HANDLER(SIOCSIWRTS, at76_iw_handler_set_rts),
- AT76_SET_HANDLER(SIOCGIWRTS, at76_iw_handler_get_rts),
- AT76_SET_HANDLER(SIOCSIWFRAG, at76_iw_handler_set_frag),
- AT76_SET_HANDLER(SIOCGIWFRAG, at76_iw_handler_get_frag),
- AT76_SET_HANDLER(SIOCGIWTXPOW, at76_iw_handler_get_txpow),
- AT76_SET_HANDLER(SIOCSIWRETRY, at76_iw_handler_set_retry),
- AT76_SET_HANDLER(SIOCGIWRETRY, at76_iw_handler_get_retry),
- AT76_SET_HANDLER(SIOCSIWENCODE, at76_iw_handler_set_encode),
- AT76_SET_HANDLER(SIOCGIWENCODE, at76_iw_handler_get_encode),
- AT76_SET_HANDLER(SIOCSIWPOWER, at76_iw_handler_set_power),
- AT76_SET_HANDLER(SIOCGIWPOWER, at76_iw_handler_get_power)
-};
-
-#define AT76_SET_PRIV(h, f) [h - SIOCIWFIRSTPRIV] = (iw_handler) f
-
-/* Private wireless handlers */
-static const iw_handler at76_priv_handlers[] = {
- AT76_SET_PRIV(AT76_SET_SHORT_PREAMBLE, at76_iw_set_short_preamble),
- AT76_SET_PRIV(AT76_GET_SHORT_PREAMBLE, at76_iw_get_short_preamble),
- AT76_SET_PRIV(AT76_SET_DEBUG, at76_iw_set_debug),
- AT76_SET_PRIV(AT76_GET_DEBUG, at76_iw_get_debug),
- AT76_SET_PRIV(AT76_SET_POWERSAVE_MODE, at76_iw_set_powersave_mode),
- AT76_SET_PRIV(AT76_GET_POWERSAVE_MODE, at76_iw_get_powersave_mode),
- AT76_SET_PRIV(AT76_SET_SCAN_TIMES, at76_iw_set_scan_times),
- AT76_SET_PRIV(AT76_GET_SCAN_TIMES, at76_iw_get_scan_times),
- AT76_SET_PRIV(AT76_SET_SCAN_MODE, at76_iw_set_scan_mode),
- AT76_SET_PRIV(AT76_GET_SCAN_MODE, at76_iw_get_scan_mode),
-};
-
-/* Names and arguments of private wireless handlers */
-static const struct iw_priv_args at76_priv_args[] = {
- /* 0 - long, 1 - short */
- {AT76_SET_SHORT_PREAMBLE,
- IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "set_preamble"},
-
- {AT76_GET_SHORT_PREAMBLE,
- 0, IW_PRIV_TYPE_CHAR | IW_PRIV_SIZE_FIXED | 10, "get_preamble"},
-
- /* we must pass the new debug mask as a string, because iwpriv cannot
- * parse hex numbers starting with 0x :-( */
- {AT76_SET_DEBUG,
- IW_PRIV_TYPE_CHAR | 10, 0, "set_debug"},
-
- {AT76_GET_DEBUG,
- 0, IW_PRIV_TYPE_CHAR | IW_PRIV_SIZE_FIXED | 10, "get_debug"},
-
- /* 1 - active, 2 - power save, 3 - smart power save */
- {AT76_SET_POWERSAVE_MODE,
- IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "set_powersave"},
-
- {AT76_GET_POWERSAVE_MODE,
- 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_powersave"},
-
- /* min_channel_time, max_channel_time */
- {AT76_SET_SCAN_TIMES,
- IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 2, 0, "set_scan_times"},
-
- {AT76_GET_SCAN_TIMES,
- 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 2, "get_scan_times"},
-
- /* 0 - active, 1 - passive scan */
- {AT76_SET_SCAN_MODE,
- IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, 0, "set_scan_mode"},
-
- {AT76_GET_SCAN_MODE,
- 0, IW_PRIV_TYPE_INT | IW_PRIV_SIZE_FIXED | 1, "get_scan_mode"},
-};
-
-static const struct iw_handler_def at76_handler_def = {
- .num_standard = ARRAY_SIZE(at76_handlers),
- .num_private = ARRAY_SIZE(at76_priv_handlers),
- .num_private_args = ARRAY_SIZE(at76_priv_args),
- .standard = at76_handlers,
- .private = at76_priv_handlers,
- .private_args = at76_priv_args,
- .get_wireless_stats = at76_get_wireless_stats,
-};
-
-static const u8 snapsig[] = { 0xaa, 0xaa, 0x03 };
-
-/* RFC 1042 encapsulates Ethernet frames in 802.2 SNAP (0xaa, 0xaa, 0x03) with
- * a SNAP OID of 0 (0x00, 0x00, 0x00) */
-static const u8 rfc1042sig[] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
-
-static int at76_tx(struct sk_buff *skb, struct net_device *netdev)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- struct net_device_stats *stats = &priv->stats;
- int ret = 0;
- int wlen;
- int submit_len;
- struct at76_tx_buffer *tx_buffer = priv->bulk_out_buffer;
- struct ieee80211_hdr_3addr *i802_11_hdr =
- (struct ieee80211_hdr_3addr *)tx_buffer->packet;
- u8 *payload = i802_11_hdr->payload;
- struct ethhdr *eh = (struct ethhdr *)skb->data;
-
- if (netif_queue_stopped(netdev)) {
- printk(KERN_ERR "%s: %s called while netdev is stopped\n",
- netdev->name, __func__);
- /* skip this packet */
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- }
-
- if (priv->tx_urb->status == -EINPROGRESS) {
- printk(KERN_ERR "%s: %s called while tx urb is pending\n",
- netdev->name, __func__);
- /* skip this packet */
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- }
-
- if (skb->len < ETH_HLEN) {
- printk(KERN_ERR "%s: %s: skb too short (%d)\n",
- netdev->name, __func__, skb->len);
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- }
-
- at76_ledtrig_tx_activity(); /* tell ledtrigger we send a packet */
-
- /* we can get rid of memcpy if we set netdev->hard_header_len to
- reserve enough space, but we would need to keep the skb around */
-
- if (ntohs(eh->h_proto) <= ETH_DATA_LEN) {
- /* this is a 802.3 packet */
- if (skb->len >= ETH_HLEN + sizeof(rfc1042sig)
- && skb->data[ETH_HLEN] == rfc1042sig[0]
- && skb->data[ETH_HLEN + 1] == rfc1042sig[1]) {
- /* higher layer delivered SNAP header - keep it */
- memcpy(payload, skb->data + ETH_HLEN,
- skb->len - ETH_HLEN);
- wlen = IEEE80211_3ADDR_LEN + skb->len - ETH_HLEN;
- } else {
- printk(KERN_ERR "%s: dropping non-SNAP 802.2 packet "
- "(DSAP 0x%02x SSAP 0x%02x cntrl 0x%02x)\n",
- priv->netdev->name, skb->data[ETH_HLEN],
- skb->data[ETH_HLEN + 1],
- skb->data[ETH_HLEN + 2]);
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
- }
- } else {
- /* add RFC 1042 header in front */
- memcpy(payload, rfc1042sig, sizeof(rfc1042sig));
- memcpy(payload + sizeof(rfc1042sig), &eh->h_proto,
- skb->len - offsetof(struct ethhdr, h_proto));
- wlen = IEEE80211_3ADDR_LEN + sizeof(rfc1042sig) + skb->len -
- offsetof(struct ethhdr, h_proto);
- }
-
- /* make wireless header */
- i802_11_hdr->frame_ctl =
- cpu_to_le16(IEEE80211_FTYPE_DATA |
- (priv->wep_enabled ? IEEE80211_FCTL_PROTECTED : 0) |
- (priv->iw_mode ==
- IW_MODE_INFRA ? IEEE80211_FCTL_TODS : 0));
-
- if (priv->iw_mode == IW_MODE_ADHOC) {
- memcpy(i802_11_hdr->addr1, eh->h_dest, ETH_ALEN);
- memcpy(i802_11_hdr->addr2, eh->h_source, ETH_ALEN);
- memcpy(i802_11_hdr->addr3, priv->bssid, ETH_ALEN);
- } else if (priv->iw_mode == IW_MODE_INFRA) {
- memcpy(i802_11_hdr->addr1, priv->bssid, ETH_ALEN);
- memcpy(i802_11_hdr->addr2, eh->h_source, ETH_ALEN);
- memcpy(i802_11_hdr->addr3, eh->h_dest, ETH_ALEN);
- }
-
- i802_11_hdr->duration_id = cpu_to_le16(0);
- i802_11_hdr->seq_ctl = cpu_to_le16(0);
-
- /* setup 'Atmel' header */
- tx_buffer->wlength = cpu_to_le16(wlen);
- tx_buffer->tx_rate = priv->txrate;
- /* for broadcast destination addresses, the firmware 0.100.x
- seems to choose the highest rate set with CMD_STARTUP in
- basic_rate_set replacing this value */
-
- memset(tx_buffer->reserved, 0, sizeof(tx_buffer->reserved));
-
- tx_buffer->padding = at76_calc_padding(wlen);
- submit_len = wlen + AT76_TX_HDRLEN + tx_buffer->padding;
-
- at76_dbg(DBG_TX_DATA_CONTENT, "%s skb->data %s", priv->netdev->name,
- hex2str(skb->data, 32));
- at76_dbg(DBG_TX_DATA, "%s tx: wlen 0x%x pad 0x%x rate %d hdr %s",
- priv->netdev->name,
- le16_to_cpu(tx_buffer->wlength),
- tx_buffer->padding, tx_buffer->tx_rate,
- hex2str(i802_11_hdr, sizeof(*i802_11_hdr)));
- at76_dbg(DBG_TX_DATA_CONTENT, "%s payload %s", priv->netdev->name,
- hex2str(payload, 48));
-
- /* send stuff */
- netif_stop_queue(netdev);
- netdev->trans_start = jiffies;
-
- usb_fill_bulk_urb(priv->tx_urb, priv->udev, priv->tx_pipe, tx_buffer,
- submit_len, at76_tx_callback, priv);
- ret = usb_submit_urb(priv->tx_urb, GFP_ATOMIC);
- if (ret) {
- stats->tx_errors++;
- printk(KERN_ERR "%s: error in tx submit urb: %d\n",
- netdev->name, ret);
- if (ret == -EINVAL)
- printk(KERN_ERR
- "%s: -EINVAL: tx urb %p hcpriv %p complete %p\n",
- priv->netdev->name, priv->tx_urb,
- priv->tx_urb->hcpriv, priv->tx_urb->complete);
- } else
- stats->tx_bytes += skb->len;
-
- dev_kfree_skb(skb);
- return NETDEV_TX_OK;
-}
-
-static void at76_tx_timeout(struct net_device *netdev)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- if (!priv)
- return;
- dev_warn(&netdev->dev, "tx timeout.");
-
- usb_unlink_urb(priv->tx_urb);
- priv->stats.tx_errors++;
-}
-
-static int at76_submit_rx_urb(struct at76_priv *priv)
-{
- int ret;
- int size;
- struct sk_buff *skb = priv->rx_skb;
-
- if (!priv->rx_urb) {
- printk(KERN_ERR "%s: %s: priv->rx_urb is NULL\n",
- priv->netdev->name, __func__);
- return -EFAULT;
- }
-
- if (!skb) {
- skb = dev_alloc_skb(sizeof(struct at76_rx_buffer));
- if (!skb) {
- printk(KERN_ERR "%s: cannot allocate rx skbuff\n",
- priv->netdev->name);
- ret = -ENOMEM;
- goto exit;
- }
- priv->rx_skb = skb;
- } else {
- skb_push(skb, skb_headroom(skb));
- skb_trim(skb, 0);
- }
-
- size = skb_tailroom(skb);
- usb_fill_bulk_urb(priv->rx_urb, priv->udev, priv->rx_pipe,
- skb_put(skb, size), size, at76_rx_callback, priv);
- ret = usb_submit_urb(priv->rx_urb, GFP_ATOMIC);
- if (ret < 0) {
- if (ret == -ENODEV)
- at76_dbg(DBG_DEVSTART,
- "usb_submit_urb returned -ENODEV");
- else
- printk(KERN_ERR "%s: rx, usb_submit_urb failed: %d\n",
- priv->netdev->name, ret);
- }
-
-exit:
- if (ret < 0 && ret != -ENODEV)
- printk(KERN_ERR "%s: cannot submit rx urb - please unload the "
- "driver and/or power cycle the device\n",
- priv->netdev->name);
-
- return ret;
-}
-
-static int at76_open(struct net_device *netdev)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- int ret = 0;
-
- at76_dbg(DBG_PROC_ENTRY, "%s(): entry", __func__);
-
- if (mutex_lock_interruptible(&priv->mtx))
- return -EINTR;
-
- /* if netdev->dev_addr != priv->mac_addr we must
- set the mac address in the device ! */
- if (compare_ether_addr(netdev->dev_addr, priv->mac_addr)) {
- if (at76_add_mac_address(priv, netdev->dev_addr) >= 0)
- at76_dbg(DBG_PROGRESS, "%s: set new MAC addr %pM",
- netdev->name, netdev->dev_addr);
- }
-
- priv->scan_state = SCAN_IDLE;
- priv->last_scan = jiffies;
-
- ret = at76_submit_rx_urb(priv);
- if (ret < 0) {
- printk(KERN_ERR "%s: open: submit_rx_urb failed: %d\n",
- netdev->name, ret);
- goto error;
- }
-
- schedule_delayed_work(&priv->dwork_restart, 0);
-
- at76_dbg(DBG_PROC_ENTRY, "%s(): end", __func__);
-error:
- mutex_unlock(&priv->mtx);
- return ret < 0 ? ret : 0;
-}
-
-static int at76_stop(struct net_device *netdev)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- at76_dbg(DBG_DEVSTART, "%s: ENTER", __func__);
-
- if (mutex_lock_interruptible(&priv->mtx))
- return -EINTR;
-
- at76_quiesce(priv);
-
- if (!priv->device_unplugged) {
- /* We are called by "ifconfig ethX down", not because the
- * device is not available anymore. */
- at76_set_radio(priv, 0);
-
- /* We unlink rx_urb because at76_open() re-submits it.
- * If unplugged, at76_delete_device() takes care of it. */
- usb_kill_urb(priv->rx_urb);
- }
-
- /* free the bss_list */
- at76_free_bss_list(priv);
-
- mutex_unlock(&priv->mtx);
- at76_dbg(DBG_DEVSTART, "%s: EXIT", __func__);
-
- return 0;
-}
-
-static void at76_ethtool_get_drvinfo(struct net_device *netdev,
- struct ethtool_drvinfo *info)
-{
- struct at76_priv *priv = netdev_priv(netdev);
-
- strncpy(info->driver, DRIVER_NAME, sizeof(info->driver));
- strncpy(info->version, DRIVER_VERSION, sizeof(info->version));
-
- usb_make_path(priv->udev, info->bus_info, sizeof(info->bus_info));
-
- snprintf(info->fw_version, sizeof(info->fw_version), "%d.%d.%d-%d",
- priv->fw_version.major, priv->fw_version.minor,
- priv->fw_version.patch, priv->fw_version.build);
-}
-
-static u32 at76_ethtool_get_link(struct net_device *netdev)
-{
- struct at76_priv *priv = netdev_priv(netdev);
- return priv->mac_state == MAC_CONNECTED;
-}
-
-static const struct ethtool_ops at76_ethtool_ops = {
- .get_drvinfo = at76_ethtool_get_drvinfo,
- .get_link = at76_ethtool_get_link,
-};
-
-/* Download external firmware */
-static int at76_load_external_fw(struct usb_device *udev, struct fwentry *fwe)
-{
- int ret;
- int op_mode;
- int blockno = 0;
- int bsize;
- u8 *block;
- u8 *buf = fwe->extfw;
- int size = fwe->extfw_size;
-
- if (!buf || !size)
- return -ENOENT;
-
- op_mode = at76_get_op_mode(udev);
- at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
-
- if (op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
- dev_printk(KERN_ERR, &udev->dev, "unexpected opmode %d\n",
- op_mode);
- return -EINVAL;
- }
-
- block = kmalloc(FW_BLOCK_SIZE, GFP_KERNEL);
- if (!block)
- return -ENOMEM;
-
- at76_dbg(DBG_DEVSTART, "downloading external firmware");
-
- /* for fw >= 0.100, the device needs an extra empty block */
- do {
- bsize = min_t(int, size, FW_BLOCK_SIZE);
- memcpy(block, buf, bsize);
- at76_dbg(DBG_DEVSTART,
- "ext fw, size left = %5d, bsize = %4d, blockno = %2d",
- size, bsize, blockno);
- ret = at76_load_ext_fw_block(udev, blockno, block, bsize);
- if (ret != bsize) {
- dev_printk(KERN_ERR, &udev->dev,
- "loading %dth firmware block failed: %d\n",
- blockno, ret);
- goto exit;
- }
- buf += bsize;
- size -= bsize;
- blockno++;
- } while (bsize > 0);
-
- if (at76_is_505a(fwe->board_type)) {
- at76_dbg(DBG_DEVSTART, "200 ms delay for 505a");
- schedule_timeout_interruptible(HZ / 5 + 1);
- }
-
-exit:
- kfree(block);
- if (ret < 0)
- dev_printk(KERN_ERR, &udev->dev,
- "downloading external firmware failed: %d\n", ret);
- return ret;
-}
-
-/* Download internal firmware */
-static int at76_load_internal_fw(struct usb_device *udev, struct fwentry *fwe)
-{
- int ret;
- int need_remap = !at76_is_505a(fwe->board_type);
-
- ret = at76_usbdfu_download(udev, fwe->intfw, fwe->intfw_size,
- need_remap ? 0 : 2 * HZ);
-
- if (ret < 0) {
- dev_printk(KERN_ERR, &udev->dev,
- "downloading internal fw failed with %d\n", ret);
- goto exit;
- }
-
- at76_dbg(DBG_DEVSTART, "sending REMAP");
-
- /* no REMAP for 505A (see SF driver) */
- if (need_remap) {
- ret = at76_remap(udev);
- if (ret < 0) {
- dev_printk(KERN_ERR, &udev->dev,
- "sending REMAP failed with %d\n", ret);
- goto exit;
- }
- }
-
- at76_dbg(DBG_DEVSTART, "sleeping for 2 seconds");
- schedule_timeout_interruptible(2 * HZ + 1);
- usb_reset_device(udev);
-
-exit:
- return ret;
-}
-
-static int at76_match_essid(struct at76_priv *priv, struct bss_info *ptr)
-{
- /* common criteria for both modi */
-
- int ret = (priv->essid_size == 0 /* ANY ssid */ ||
- (priv->essid_size == ptr->ssid_len &&
- !memcmp(priv->essid, ptr->ssid, ptr->ssid_len)));
- if (!ret)
- at76_dbg(DBG_BSS_MATCH,
- "%s bss table entry %p: essid didn't match",
- priv->netdev->name, ptr);
- return ret;
-}
-
-static inline int at76_match_mode(struct at76_priv *priv, struct bss_info *ptr)
-{
- int ret;
-
- if (priv->iw_mode == IW_MODE_ADHOC)
- ret = ptr->capa & WLAN_CAPABILITY_IBSS;
- else
- ret = ptr->capa & WLAN_CAPABILITY_ESS;
- if (!ret)
- at76_dbg(DBG_BSS_MATCH,
- "%s bss table entry %p: mode didn't match",
- priv->netdev->name, ptr);
- return ret;
-}
-
-static int at76_match_rates(struct at76_priv *priv, struct bss_info *ptr)
-{
- int i;
-
- for (i = 0; i < ptr->rates_len; i++) {
- u8 rate = ptr->rates[i];
-
- if (!(rate & 0x80))
- continue;
-
- /* this is a basic rate we have to support
- (see IEEE802.11, ch. 7.3.2.2) */
- if (rate != (0x80 | hw_rates[0])
- && rate != (0x80 | hw_rates[1])
- && rate != (0x80 | hw_rates[2])
- && rate != (0x80 | hw_rates[3])) {
- at76_dbg(DBG_BSS_MATCH,
- "%s: bss table entry %p: basic rate %02x not "
- "supported", priv->netdev->name, ptr, rate);
- return 0;
- }
- }
-
- /* if we use short preamble, the bss must support it */
- if (priv->preamble_type == PREAMBLE_TYPE_SHORT &&
- !(ptr->capa & WLAN_CAPABILITY_SHORT_PREAMBLE)) {
- at76_dbg(DBG_BSS_MATCH,
- "%s: %p does not support short preamble",
- priv->netdev->name, ptr);
- return 0;
- } else
- return 1;
-}
-
-static inline int at76_match_wep(struct at76_priv *priv, struct bss_info *ptr)
-{
- if (!priv->wep_enabled && ptr->capa & WLAN_CAPABILITY_PRIVACY) {
- /* we have disabled WEP, but the BSS signals privacy */
- at76_dbg(DBG_BSS_MATCH,
- "%s: bss table entry %p: requires encryption",
- priv->netdev->name, ptr);
- return 0;
- }
- /* otherwise if the BSS does not signal privacy it may well
- accept encrypted packets from us ... */
- return 1;
-}
-
-static inline int at76_match_bssid(struct at76_priv *priv, struct bss_info *ptr)
-{
- if (!priv->wanted_bssid_valid ||
- !compare_ether_addr(ptr->bssid, priv->wanted_bssid))
- return 1;
-
- at76_dbg(DBG_BSS_MATCH,
- "%s: requested bssid - %pM does not match",
- priv->netdev->name, priv->wanted_bssid);
- at76_dbg(DBG_BSS_MATCH,
- " AP bssid - %pM of bss table entry %p",
- ptr->bssid, ptr);
- return 0;
-}
-
-/**
- * at76_match_bss - try to find a matching bss in priv->bss
- *
- * last - last bss tried
- *
- * last == NULL signals a new round starting with priv->bss_list.next
- * this function must be called inside an acquired priv->bss_list_spinlock
- * otherwise the timeout on bss may remove the newly chosen entry
- */
-static struct bss_info *at76_match_bss(struct at76_priv *priv,
- struct bss_info *last)
-{
- struct bss_info *ptr = NULL;
- struct list_head *curr;
-
- curr = last ? last->list.next : priv->bss_list.next;
- while (curr != &priv->bss_list) {
- ptr = list_entry(curr, struct bss_info, list);
- if (at76_match_essid(priv, ptr) && at76_match_mode(priv, ptr)
- && at76_match_wep(priv, ptr) && at76_match_rates(priv, ptr)
- && at76_match_bssid(priv, ptr))
- break;
- curr = curr->next;
- }
-
- if (curr == &priv->bss_list)
- ptr = NULL;
- /* otherwise ptr points to the struct bss_info we have chosen */
-
- at76_dbg(DBG_BSS_TABLE, "%s %s: returned %p", priv->netdev->name,
- __func__, ptr);
- return ptr;
-}
-
-/* Start joining a matching BSS, or create own IBSS */
-static void at76_work_join(struct work_struct *work)
-{
- struct at76_priv *priv = container_of(work, struct at76_priv,
- work_join);
- int ret;
- unsigned long flags;
-
- mutex_lock(&priv->mtx);
-
- WARN_ON(priv->mac_state != MAC_JOINING);
- if (priv->mac_state != MAC_JOINING)
- goto exit;
-
- /* secure the access to priv->curr_bss ! */
- spin_lock_irqsave(&priv->bss_list_spinlock, flags);
- priv->curr_bss = at76_match_bss(priv, priv->curr_bss);
- spin_unlock_irqrestore(&priv->bss_list_spinlock, flags);
-
- if (!priv->curr_bss) {
- /* here we haven't found a matching (i)bss ... */
- if (priv->iw_mode == IW_MODE_ADHOC) {
- at76_set_mac_state(priv, MAC_OWN_IBSS);
- at76_start_ibss(priv);
- goto exit;
- }
- /* haven't found a matching BSS in infra mode - try again */
- at76_set_mac_state(priv, MAC_SCANNING);
- schedule_work(&priv->work_start_scan);
- goto exit;
- }
-
- ret = at76_join_bss(priv, priv->curr_bss);
- if (ret < 0) {
- printk(KERN_ERR "%s: join_bss failed with %d\n",
- priv->netdev->name, ret);
- goto exit;
- }
-
- ret = at76_wait_completion(priv, CMD_JOIN);
- if (ret != CMD_STATUS_COMPLETE) {
- if (ret != CMD_STATUS_TIME_OUT)
- printk(KERN_ERR "%s: join_bss completed with %d\n",
- priv->netdev->name, ret);
- else
- printk(KERN_INFO "%s: join_bss ssid %pM timed out\n",
- priv->netdev->name,
- priv->curr_bss->bssid);
-
- /* retry next BSS immediately */
- schedule_work(&priv->work_join);
- goto exit;
- }
-
- /* here we have joined the (I)BSS */
- if (priv->iw_mode == IW_MODE_ADHOC) {
- struct bss_info *bptr = priv->curr_bss;
- at76_set_mac_state(priv, MAC_CONNECTED);
- /* get ESSID, BSSID and channel for priv->curr_bss */
- priv->essid_size = bptr->ssid_len;
- memcpy(priv->essid, bptr->ssid, bptr->ssid_len);
- memcpy(priv->bssid, bptr->bssid, ETH_ALEN);
- priv->channel = bptr->channel;
- at76_iwevent_bss_connect(priv->netdev, bptr->bssid);
- netif_carrier_on(priv->netdev);
- netif_start_queue(priv->netdev);
- /* just to be sure */
- cancel_delayed_work(&priv->dwork_get_scan);
- cancel_delayed_work(&priv->dwork_auth);
- cancel_delayed_work(&priv->dwork_assoc);
- } else {
- /* send auth req */
- priv->retries = AUTH_RETRIES;
- at76_set_mac_state(priv, MAC_AUTH);
- at76_auth_req(priv, priv->curr_bss, 1, NULL);
- at76_dbg(DBG_MGMT_TIMER,
- "%s:%d: starting mgmt_timer + HZ", __func__, __LINE__);
- schedule_delayed_work(&priv->dwork_auth, AUTH_TIMEOUT);
- }
-
-exit:
- mutex_unlock(&priv->mtx);
-}
-
-/* Reap scan results */
-static void at76_dwork_get_scan(struct work_struct *work)
-{
- int status;
- int ret;
- struct at76_priv *priv = container_of(work, struct at76_priv,
- dwork_get_scan.work);
-
- mutex_lock(&priv->mtx);
- WARN_ON(priv->mac_state != MAC_SCANNING);
- if (priv->mac_state != MAC_SCANNING)
- goto exit;
-
- status = at76_get_cmd_status(priv->udev, CMD_SCAN);
- if (status < 0) {
- printk(KERN_ERR "%s: %s: at76_get_cmd_status failed with %d\n",
- priv->netdev->name, __func__, status);
- status = CMD_STATUS_IN_PROGRESS;
- /* INFO: Hope it was a one off error - if not, scanning
- further down the line and stop this cycle */
- }
- at76_dbg(DBG_PROGRESS,
- "%s %s: got cmd_status %d (state %s, need_any %d)",
- priv->netdev->name, __func__, status,
- mac_states[priv->mac_state], priv->scan_need_any);
-
- if (status != CMD_STATUS_COMPLETE) {
- if ((status != CMD_STATUS_IN_PROGRESS) &&
- (status != CMD_STATUS_IDLE))
- printk(KERN_ERR "%s: %s: Bad scan status: %s\n",
- priv->netdev->name, __func__,
- at76_get_cmd_status_string(status));
-
- /* the first cmd status after scan start is always a IDLE ->
- start the timer to poll again until COMPLETED */
- at76_dbg(DBG_MGMT_TIMER,
- "%s:%d: starting mgmt_timer for %d ticks",
- __func__, __LINE__, SCAN_POLL_INTERVAL);
- schedule_delayed_work(&priv->dwork_get_scan,
- SCAN_POLL_INTERVAL);
- goto exit;
- }
-
- if (at76_debug & DBG_BSS_TABLE)
- at76_dump_bss_table(priv);
-
- if (priv->scan_need_any) {
- ret = at76_start_scan(priv, 0);
- if (ret < 0)
- printk(KERN_ERR
- "%s: %s: start_scan (ANY) failed with %d\n",
- priv->netdev->name, __func__, ret);
- at76_dbg(DBG_MGMT_TIMER,
- "%s:%d: starting mgmt_timer for %d ticks", __func__,
- __LINE__, SCAN_POLL_INTERVAL);
- schedule_delayed_work(&priv->dwork_get_scan,
- SCAN_POLL_INTERVAL);
- priv->scan_need_any = 0;
- } else {
- priv->scan_state = SCAN_COMPLETED;
- /* report the end of scan to user space */
- at76_iwevent_scan_complete(priv->netdev);
- at76_set_mac_state(priv, MAC_JOINING);
- schedule_work(&priv->work_join);
- }
-
-exit:
- mutex_unlock(&priv->mtx);
-}
-
-/* Handle loss of beacons from the AP */
-static void at76_dwork_beacon(struct work_struct *work)
-{
- struct at76_priv *priv = container_of(work, struct at76_priv,
- dwork_beacon.work);
-
- mutex_lock(&priv->mtx);
- if (priv->mac_state != MAC_CONNECTED || priv->iw_mode != IW_MODE_INFRA)
- goto exit;
-
- /* We haven't received any beacons from out AP for BEACON_TIMEOUT */
- printk(KERN_INFO "%s: lost beacon bssid %pM\n",
- priv->netdev->name, priv->curr_bss->bssid);
-
- netif_carrier_off(priv->netdev);
- netif_stop_queue(priv->netdev);
- at76_iwevent_bss_disconnect(priv->netdev);
- at76_set_mac_state(priv, MAC_SCANNING);
- schedule_work(&priv->work_start_scan);
-
-exit:
- mutex_unlock(&priv->mtx);
-}
-
-/* Handle authentication response timeout */
-static void at76_dwork_auth(struct work_struct *work)
-{
- struct at76_priv *priv = container_of(work, struct at76_priv,
- dwork_auth.work);
-
- mutex_lock(&priv->mtx);
- WARN_ON(priv->mac_state != MAC_AUTH);
- if (priv->mac_state != MAC_AUTH)
- goto exit;
-
- at76_dbg(DBG_PROGRESS, "%s: authentication response timeout",
- priv->netdev->name);
-
- if (priv->retries-- >= 0) {
- at76_auth_req(priv, priv->curr_bss, 1, NULL);
- at76_dbg(DBG_MGMT_TIMER, "%s:%d: starting mgmt_timer + HZ",
- __func__, __LINE__);
- schedule_delayed_work(&priv->dwork_auth, AUTH_TIMEOUT);
- } else {
- /* try to get next matching BSS */
- at76_set_mac_state(priv, MAC_JOINING);
- schedule_work(&priv->work_join);
- }
-
-exit:
- mutex_unlock(&priv->mtx);
-}
-
-/* Handle association response timeout */
-static void at76_dwork_assoc(struct work_struct *work)
-{
- struct at76_priv *priv = container_of(work, struct at76_priv,
- dwork_assoc.work);
-
- mutex_lock(&priv->mtx);
- WARN_ON(priv->mac_state != MAC_ASSOC);
- if (priv->mac_state != MAC_ASSOC)
- goto exit;
-
- at76_dbg(DBG_PROGRESS, "%s: association response timeout",
- priv->netdev->name);
-
- if (priv->retries-- >= 0) {
- at76_assoc_req(priv, priv->curr_bss);
- at76_dbg(DBG_MGMT_TIMER, "%s:%d: starting mgmt_timer + HZ",
- __func__, __LINE__);
- schedule_delayed_work(&priv->dwork_assoc, ASSOC_TIMEOUT);
- } else {
- /* try to get next matching BSS */
- at76_set_mac_state(priv, MAC_JOINING);
- schedule_work(&priv->work_join);
- }
-
-exit:
- mutex_unlock(&priv->mtx);
-}
-
-/* Read new bssid in ad-hoc mode */
-static void at76_work_new_bss(struct work_struct *work)
-{
- struct at76_priv *priv = container_of(work, struct at76_priv,
- work_new_bss);
- int ret;
- struct mib_mac_mgmt mac_mgmt;
-
- mutex_lock(&priv->mtx);
-
- ret = at76_get_mib(priv->udev, MIB_MAC_MGMT, &mac_mgmt,
- sizeof(struct mib_mac_mgmt));
- if (ret < 0) {
- printk(KERN_ERR "%s: at76_get_mib failed: %d\n",
- priv->netdev->name, ret);
- goto exit;
- }
-
- at76_dbg(DBG_PROGRESS, "ibss_change = 0x%2x", mac_mgmt.ibss_change);
- memcpy(priv->bssid, mac_mgmt.current_bssid, ETH_ALEN);
- at76_dbg(DBG_PROGRESS, "using BSSID %pM", priv->bssid);
-
- at76_iwevent_bss_connect(priv->netdev, priv->bssid);
-
- priv->mib_buf.type = MIB_MAC_MGMT;
- priv->mib_buf.size = 1;
- priv->mib_buf.index = offsetof(struct mib_mac_mgmt, ibss_change);
- priv->mib_buf.data.byte = 0;
-
- ret = at76_set_mib(priv, &priv->mib_buf);
- if (ret < 0)
- printk(KERN_ERR "%s: set_mib (ibss change ok) failed: %d\n",
- priv->netdev->name, ret);
-
-exit:
- mutex_unlock(&priv->mtx);
-}
-
-static int at76_startup_device(struct at76_priv *priv)
-{
- struct at76_card_config *ccfg = &priv->card_config;
- int ret;
-
- at76_dbg(DBG_PARAMS,
- "%s param: ssid %.*s (%s) mode %s ch %d wep %s key %d "
- "keylen %d", priv->netdev->name, priv->essid_size, priv->essid,
- hex2str(priv->essid, IW_ESSID_MAX_SIZE),
- priv->iw_mode == IW_MODE_ADHOC ? "adhoc" : "infra",
- priv->channel, priv->wep_enabled ? "enabled" : "disabled",
- priv->wep_key_id, priv->wep_keys_len[priv->wep_key_id]);
- at76_dbg(DBG_PARAMS,
- "%s param: preamble %s rts %d retry %d frag %d "
- "txrate %s auth_mode %d", priv->netdev->name,
- preambles[priv->preamble_type], priv->rts_threshold,
- priv->short_retry_limit, priv->frag_threshold,
- priv->txrate == TX_RATE_1MBIT ? "1MBit" : priv->txrate ==
- TX_RATE_2MBIT ? "2MBit" : priv->txrate ==
- TX_RATE_5_5MBIT ? "5.5MBit" : priv->txrate ==
- TX_RATE_11MBIT ? "11MBit" : priv->txrate ==
- TX_RATE_AUTO ? "auto" : "<invalid>", priv->auth_mode);
- at76_dbg(DBG_PARAMS,
- "%s param: pm_mode %d pm_period %d auth_mode %s "
- "scan_times %d %d scan_mode %s",
- priv->netdev->name, priv->pm_mode, priv->pm_period,
- priv->auth_mode == WLAN_AUTH_OPEN ? "open" : "shared_secret",
- priv->scan_min_time, priv->scan_max_time,
- priv->scan_mode == SCAN_TYPE_ACTIVE ? "active" : "passive");
-
- memset(ccfg, 0, sizeof(struct at76_card_config));
- ccfg->promiscuous_mode = 0;
- ccfg->short_retry_limit = priv->short_retry_limit;
-
- if (priv->wep_enabled) {
- if (priv->wep_keys_len[priv->wep_key_id] > WEP_SMALL_KEY_LEN)
- ccfg->encryption_type = 2;
- else
- ccfg->encryption_type = 1;
-
- /* jal: always exclude unencrypted if WEP is active */
- ccfg->exclude_unencrypted = 1;
- } else {
- ccfg->exclude_unencrypted = 0;
- ccfg->encryption_type = 0;
- }
-
- ccfg->rts_threshold = cpu_to_le16(priv->rts_threshold);
- ccfg->fragmentation_threshold = cpu_to_le16(priv->frag_threshold);
-
- memcpy(ccfg->basic_rate_set, hw_rates, 4);
- /* jal: really needed, we do a set_mib for autorate later ??? */
- ccfg->auto_rate_fallback = (priv->txrate == TX_RATE_AUTO ? 1 : 0);
- ccfg->channel = priv->channel;
- ccfg->privacy_invoked = priv->wep_enabled;
- memcpy(ccfg->current_ssid, priv->essid, IW_ESSID_MAX_SIZE);
- ccfg->ssid_len = priv->essid_size;
-
- ccfg->wep_default_key_id = priv->wep_key_id;
- memcpy(ccfg->wep_default_key_value, priv->wep_keys, 4 * WEP_KEY_LEN);
-
- ccfg->short_preamble = priv->preamble_type;
- ccfg->beacon_period = cpu_to_le16(priv->beacon_period);
-
- ret = at76_set_card_command(priv->udev, CMD_STARTUP, &priv->card_config,
- sizeof(struct at76_card_config));
- if (ret < 0) {
- printk(KERN_ERR "%s: at76_set_card_command failed: %d\n",
- priv->netdev->name, ret);
- return ret;
- }
-
- at76_wait_completion(priv, CMD_STARTUP);
-
- /* remove BSSID from previous run */
- memset(priv->bssid, 0, ETH_ALEN);
-
- if (at76_set_radio(priv, 1) == 1)
- at76_wait_completion(priv, CMD_RADIO_ON);
-
- ret = at76_set_preamble(priv, priv->preamble_type);
- if (ret < 0)
- return ret;
-
- ret = at76_set_frag(priv, priv->frag_threshold);
- if (ret < 0)
- return ret;
-
- ret = at76_set_rts(priv, priv->rts_threshold);
- if (ret < 0)
- return ret;
-
- ret = at76_set_autorate_fallback(priv,
- priv->txrate == TX_RATE_AUTO ? 1 : 0);
- if (ret < 0)
- return ret;
-
- ret = at76_set_pm_mode(priv);
- if (ret < 0)
- return ret;
-
- if (at76_debug & DBG_MIB) {
- at76_dump_mib_mac(priv);
- at76_dump_mib_mac_addr(priv);
- at76_dump_mib_mac_mgmt(priv);
- at76_dump_mib_mac_wep(priv);
- at76_dump_mib_mdomain(priv);
- at76_dump_mib_phy(priv);
- at76_dump_mib_local(priv);
- }
-
- return 0;
-}
-
-/* Restart the interface */
-static void at76_dwork_restart(struct work_struct *work)
-{
- struct at76_priv *priv = container_of(work, struct at76_priv,
- dwork_restart.work);
-
- mutex_lock(&priv->mtx);
-
- netif_carrier_off(priv->netdev); /* stop netdev watchdog */
- netif_stop_queue(priv->netdev); /* stop tx data packets */
-
- at76_startup_device(priv);
-
- if (priv->iw_mode != IW_MODE_MONITOR) {
- priv->netdev->type = ARPHRD_ETHER;
- at76_set_mac_state(priv, MAC_SCANNING);
- schedule_work(&priv->work_start_scan);
- } else {
- priv->netdev->type = ARPHRD_IEEE80211_RADIOTAP;
- at76_start_monitor(priv);
- }
-
- mutex_unlock(&priv->mtx);
-}
-
-/* Initiate scanning */
-static void at76_work_start_scan(struct work_struct *work)
-{
- struct at76_priv *priv = container_of(work, struct at76_priv,
- work_start_scan);
- int ret;
-
- mutex_lock(&priv->mtx);
-
- WARN_ON(priv->mac_state != MAC_SCANNING);
- if (priv->mac_state != MAC_SCANNING)
- goto exit;
-
- /* only clear the bss list when a scan is actively initiated,
- * otherwise simply rely on at76_bss_list_timeout */
- if (priv->scan_state == SCAN_IN_PROGRESS) {
- at76_free_bss_list(priv);
- priv->scan_need_any = 1;
- } else
- priv->scan_need_any = 0;
-
- ret = at76_start_scan(priv, 1);
-
- if (ret < 0)
- printk(KERN_ERR "%s: %s: start_scan failed with %d\n",
- priv->netdev->name, __func__, ret);
- else {
- at76_dbg(DBG_MGMT_TIMER,
- "%s:%d: starting mgmt_timer for %d ticks",
- __func__, __LINE__, SCAN_POLL_INTERVAL);
- schedule_delayed_work(&priv->dwork_get_scan,
- SCAN_POLL_INTERVAL);
- }
-
-exit:
- mutex_unlock(&priv->mtx);
-}
-
-/* Enable or disable promiscuous mode */
-static void at76_work_set_promisc(struct work_struct *work)
-{
- struct at76_priv *priv = container_of(work, struct at76_priv,
- work_set_promisc);
- int ret = 0;
-
- mutex_lock(&priv->mtx);
-
- priv->mib_buf.type = MIB_LOCAL;
- priv->mib_buf.size = 1;
- priv->mib_buf.index = offsetof(struct mib_local, promiscuous_mode);
- priv->mib_buf.data.byte = priv->promisc ? 1 : 0;
-
- ret = at76_set_mib(priv, &priv->mib_buf);
- if (ret < 0)
- printk(KERN_ERR "%s: set_mib (promiscuous_mode) failed: %d\n",
- priv->netdev->name, ret);
-
- mutex_unlock(&priv->mtx);
-}
-
-/* Submit Rx urb back to the device */
-static void at76_work_submit_rx(struct work_struct *work)
-{
- struct at76_priv *priv = container_of(work, struct at76_priv,
- work_submit_rx);
-
- mutex_lock(&priv->mtx);
- at76_submit_rx_urb(priv);
- mutex_unlock(&priv->mtx);
-}
-
-/* We got an association response */
-static void at76_rx_mgmt_assoc(struct at76_priv *priv,
- struct at76_rx_buffer *buf)
-{
- struct ieee80211_assoc_response *resp =
- (struct ieee80211_assoc_response *)buf->packet;
- u16 assoc_id = le16_to_cpu(resp->aid);
- u16 status = le16_to_cpu(resp->status);
-
- at76_dbg(DBG_RX_MGMT, "%s: rx AssocResp bssid %pM capa 0x%04x status "
- "0x%04x assoc_id 0x%04x rates %s", priv->netdev->name,
- resp->header.addr3, le16_to_cpu(resp->capability),
- status, assoc_id, hex2str(resp->info_element->data,
- resp->info_element->len));
-
- if (priv->mac_state != MAC_ASSOC) {
- printk(KERN_INFO "%s: AssocResp in state %s ignored\n",
- priv->netdev->name, mac_states[priv->mac_state]);
- return;
- }
-
- BUG_ON(!priv->curr_bss);
-
- cancel_delayed_work(&priv->dwork_assoc);
- if (status == WLAN_STATUS_SUCCESS) {
- struct bss_info *ptr = priv->curr_bss;
- priv->assoc_id = assoc_id & 0x3fff;
- /* update iwconfig params */
- memcpy(priv->bssid, ptr->bssid, ETH_ALEN);
- memcpy(priv->essid, ptr->ssid, ptr->ssid_len);
- priv->essid_size = ptr->ssid_len;
- priv->channel = ptr->channel;
- schedule_work(&priv->work_assoc_done);
- } else {
- at76_set_mac_state(priv, MAC_JOINING);
- schedule_work(&priv->work_join);
- }
-}
-
-/* Process disassociation request from the AP */
-static void at76_rx_mgmt_disassoc(struct at76_priv *priv,
- struct at76_rx_buffer *buf)
-{
- struct ieee80211_disassoc *resp =
- (struct ieee80211_disassoc *)buf->packet;
- struct ieee80211_hdr_3addr *mgmt = &resp->header;
-
- at76_dbg(DBG_RX_MGMT,
- "%s: rx DisAssoc bssid %pM reason 0x%04x destination %pM",
- priv->netdev->name, mgmt->addr3,
- le16_to_cpu(resp->reason), mgmt->addr1);
-
- /* We are not connected, ignore */
- if (priv->mac_state == MAC_SCANNING || priv->mac_state == MAC_INIT
- || !priv->curr_bss)
- return;
-
- /* Not our BSSID, ignore */
- if (compare_ether_addr(mgmt->addr3, priv->curr_bss->bssid))
- return;
-
- /* Not for our STA and not broadcast, ignore */
- if (compare_ether_addr(priv->netdev->dev_addr, mgmt->addr1)
- && !is_broadcast_ether_addr(mgmt->addr1))
- return;
-
- if (priv->mac_state != MAC_ASSOC && priv->mac_state != MAC_CONNECTED
- && priv->mac_state != MAC_JOINING) {
- printk(KERN_INFO "%s: DisAssoc in state %s ignored\n",
- priv->netdev->name, mac_states[priv->mac_state]);
- return;
- }
-
- if (priv->mac_state == MAC_CONNECTED) {
- netif_carrier_off(priv->netdev);
- netif_stop_queue(priv->netdev);
- at76_iwevent_bss_disconnect(priv->netdev);
- }
- cancel_delayed_work(&priv->dwork_get_scan);
- cancel_delayed_work(&priv->dwork_beacon);
- cancel_delayed_work(&priv->dwork_auth);
- cancel_delayed_work(&priv->dwork_assoc);
- at76_set_mac_state(priv, MAC_JOINING);
- schedule_work(&priv->work_join);
-}
-
-static void at76_rx_mgmt_auth(struct at76_priv *priv,
- struct at76_rx_buffer *buf)
-{
- struct ieee80211_auth *resp = (struct ieee80211_auth *)buf->packet;
- struct ieee80211_hdr_3addr *mgmt = &resp->header;
- int seq_nr = le16_to_cpu(resp->transaction);
- int alg = le16_to_cpu(resp->algorithm);
- int status = le16_to_cpu(resp->status);
-
- at76_dbg(DBG_RX_MGMT,
- "%s: rx AuthFrame bssid %pM alg %d seq_nr %d status %d "
- "destination %pM", priv->netdev->name, mgmt->addr3,
- alg, seq_nr, status, mgmt->addr1);
-
- if (alg == WLAN_AUTH_SHARED_KEY && seq_nr == 2)
- at76_dbg(DBG_RX_MGMT, "%s: AuthFrame challenge %s ...",
- priv->netdev->name, hex2str(resp->info_element, 18));
-
- if (priv->mac_state != MAC_AUTH) {
- printk(KERN_INFO "%s: ignored AuthFrame in state %s\n",
- priv->netdev->name, mac_states[priv->mac_state]);
- return;
- }
- if (priv->auth_mode != alg) {
- printk(KERN_INFO "%s: ignored AuthFrame for alg %d\n",
- priv->netdev->name, alg);
- return;
- }
-
- BUG_ON(!priv->curr_bss);
-
- /* Not our BSSID or not for our STA, ignore */
- if (compare_ether_addr(mgmt->addr3, priv->curr_bss->bssid)
- || compare_ether_addr(priv->netdev->dev_addr, mgmt->addr1))
- return;
-
- cancel_delayed_work(&priv->dwork_auth);
- if (status != WLAN_STATUS_SUCCESS) {
- /* try to join next bss */
- at76_set_mac_state(priv, MAC_JOINING);
- schedule_work(&priv->work_join);
- return;
- }
-
- if (priv->auth_mode == WLAN_AUTH_OPEN || seq_nr == 4) {
- priv->retries = ASSOC_RETRIES;
- at76_set_mac_state(priv, MAC_ASSOC);
- at76_assoc_req(priv, priv->curr_bss);
- at76_dbg(DBG_MGMT_TIMER,
- "%s:%d: starting mgmt_timer + HZ", __func__, __LINE__);
- schedule_delayed_work(&priv->dwork_assoc, ASSOC_TIMEOUT);
- return;
- }
-
- WARN_ON(seq_nr != 2);
- at76_auth_req(priv, priv->curr_bss, seq_nr + 1, resp->info_element);
- at76_dbg(DBG_MGMT_TIMER, "%s:%d: starting mgmt_timer + HZ", __func__,
- __LINE__);
- schedule_delayed_work(&priv->dwork_auth, AUTH_TIMEOUT);
-}
-
-static void at76_rx_mgmt_deauth(struct at76_priv *priv,
- struct at76_rx_buffer *buf)
-{
- struct ieee80211_disassoc *resp =
- (struct ieee80211_disassoc *)buf->packet;
- struct ieee80211_hdr_3addr *mgmt = &resp->header;
-
- at76_dbg(DBG_RX_MGMT | DBG_PROGRESS,
- "%s: rx DeAuth bssid %pM reason 0x%04x destination %pM",
- priv->netdev->name, mgmt->addr3,
- le16_to_cpu(resp->reason), mgmt->addr1);
-
- if (priv->mac_state != MAC_AUTH && priv->mac_state != MAC_ASSOC
- && priv->mac_state != MAC_CONNECTED) {
- printk(KERN_INFO "%s: DeAuth in state %s ignored\n",
- priv->netdev->name, mac_states[priv->mac_state]);
- return;
- }
-
- BUG_ON(!priv->curr_bss);
-
- /* Not our BSSID, ignore */
- if (compare_ether_addr(mgmt->addr3, priv->curr_bss->bssid))
- return;
-
- /* Not for our STA and not broadcast, ignore */
- if (compare_ether_addr(priv->netdev->dev_addr, mgmt->addr1)
- && !is_broadcast_ether_addr(mgmt->addr1))
- return;
-
- if (priv->mac_state == MAC_CONNECTED)
- at76_iwevent_bss_disconnect(priv->netdev);
-
- at76_set_mac_state(priv, MAC_JOINING);
- schedule_work(&priv->work_join);
- cancel_delayed_work(&priv->dwork_get_scan);
- cancel_delayed_work(&priv->dwork_beacon);
- cancel_delayed_work(&priv->dwork_auth);
- cancel_delayed_work(&priv->dwork_assoc);
-}
-
-static void at76_rx_mgmt_beacon(struct at76_priv *priv,
- struct at76_rx_buffer *buf)
-{
- int varpar_len;
- /* beacon content */
- struct ieee80211_beacon *bdata = (struct ieee80211_beacon *)buf->packet;
- struct ieee80211_hdr_3addr *mgmt = &bdata->header;
-
- struct list_head *lptr;
- struct bss_info *match; /* entry matching addr3 with its bssid */
- int new_entry = 0;
- int len;
- struct ieee80211_info_element *ie;
- int have_ssid = 0;
- int have_rates = 0;
- int have_channel = 0;
- int keep_going = 1;
- unsigned long flags;
-
- spin_lock_irqsave(&priv->bss_list_spinlock, flags);
- if (priv->mac_state == MAC_CONNECTED) {
- /* in state MAC_CONNECTED we use the mgmt_timer to control
- the beacon of the BSS */
- BUG_ON(!priv->curr_bss);
-
- if (!compare_ether_addr(priv->curr_bss->bssid, mgmt->addr3)) {
- /* We got our AP's beacon, defer the timeout handler.
- Kill pending work first, as schedule_delayed_work()
- won't do it. */
- cancel_delayed_work(&priv->dwork_beacon);
- schedule_delayed_work(&priv->dwork_beacon,
- BEACON_TIMEOUT);
- priv->curr_bss->rssi = buf->rssi;
- priv->beacons_received++;
- goto exit;
- }
- }
-
- /* look if we have this BSS already in the list */
- match = NULL;
-
- if (!list_empty(&priv->bss_list)) {
- list_for_each(lptr, &priv->bss_list) {
- struct bss_info *bss_ptr =
- list_entry(lptr, struct bss_info, list);
- if (!compare_ether_addr(bss_ptr->bssid, mgmt->addr3)) {
- match = bss_ptr;
- break;
- }
- }
- }
-
- if (!match) {
- /* BSS not in the list - append it */
- match = kzalloc(sizeof(struct bss_info), GFP_ATOMIC);
- if (!match) {
- at76_dbg(DBG_BSS_TABLE,
- "%s: cannot kmalloc new bss info (%zd byte)",
- priv->netdev->name, sizeof(struct bss_info));
- goto exit;
- }
- new_entry = 1;
- list_add_tail(&match->list, &priv->bss_list);
- }
-
- match->capa = le16_to_cpu(bdata->capability);
- match->beacon_interval = le16_to_cpu(bdata->beacon_interval);
- match->rssi = buf->rssi;
- match->link_qual = buf->link_quality;
- match->noise_level = buf->noise_level;
- memcpy(match->bssid, mgmt->addr3, ETH_ALEN);
- at76_dbg(DBG_RX_BEACON, "%s: bssid %pM", priv->netdev->name,
- match->bssid);
-
- ie = bdata->info_element;
-
- /* length of var length beacon parameters */
- varpar_len = min_t(int, le16_to_cpu(buf->wlength) -
- sizeof(struct ieee80211_beacon),
- BEACON_MAX_DATA_LENGTH);
-
- /* This routine steps through the bdata->data array to get
- * some useful information about the access point.
- * Currently, this implementation supports receipt of: SSID,
- * supported transfer rates and channel, in any order, with some
- * tolerance for intermittent unknown codes (although this
- * functionality may not be necessary as the useful information will
- * usually arrive in consecutively, but there have been some
- * reports of some of the useful information fields arriving in a
- * different order).
- * It does not support any more IE types although MFIE_TYPE_TIM may
- * be supported (on my AP at least).
- * The bdata->data array is about 1500 bytes long but only ~36 of those
- * bytes are useful, hence the have_ssid etc optimizations. */
-
- while (keep_going &&
- ((&ie->data[ie->len] - (u8 *)bdata->info_element) <=
- varpar_len)) {
-
- switch (ie->id) {
-
- case WLAN_EID_SSID:
- if (have_ssid)
- break;
-
- len = min_t(int, IW_ESSID_MAX_SIZE, ie->len);
-
- /* we copy only if this is a new entry,
- or the incoming SSID is not a hidden SSID. This
- will protect us from overwriting a real SSID read
- in a ProbeResponse with a hidden one from a
- following beacon. */
- if (!new_entry && at76_is_hidden_ssid(ie->data, len)) {
- have_ssid = 1;
- break;
- }
-
- match->ssid_len = len;
- memcpy(match->ssid, ie->data, len);
- at76_dbg(DBG_RX_BEACON, "%s: SSID - %.*s",
- priv->netdev->name, len, match->ssid);
- have_ssid = 1;
- break;
-
- case WLAN_EID_SUPP_RATES:
- if (have_rates)
- break;
-
- match->rates_len =
- min_t(int, sizeof(match->rates), ie->len);
- memcpy(match->rates, ie->data, match->rates_len);
- have_rates = 1;
- at76_dbg(DBG_RX_BEACON, "%s: SUPPORTED RATES %s",
- priv->netdev->name,
- hex2str(ie->data, ie->len));
- break;
-
- case WLAN_EID_DS_PARAMS:
- if (have_channel)
- break;
-
- match->channel = ie->data[0];
- have_channel = 1;
- at76_dbg(DBG_RX_BEACON, "%s: CHANNEL - %d",
- priv->netdev->name, match->channel);
- break;
-
- case WLAN_EID_CF_PARAMS:
- case WLAN_EID_TIM:
- case WLAN_EID_IBSS_PARAMS:
- default:
- at76_dbg(DBG_RX_BEACON, "%s: beacon IE id %d len %d %s",
- priv->netdev->name, ie->id, ie->len,
- hex2str(ie->data, ie->len));
- break;
- }
-
- /* advance to the next informational element */
- next_ie(&ie);
-
- /* Optimization: after all, the bdata->data array is
- * varpar_len bytes long, whereas we get all of the useful
- * information after only ~36 bytes, this saves us a lot of
- * time (and trouble as the remaining portion of the array
- * could be full of junk)
- * Comment this out if you want to see what other information
- * comes from the AP - although little of it may be useful */
- }
-
- at76_dbg(DBG_RX_BEACON, "%s: Finished processing beacon data",
- priv->netdev->name);
-
- match->last_rx = jiffies; /* record last rx of beacon */
-
-exit:
- spin_unlock_irqrestore(&priv->bss_list_spinlock, flags);
-}
-
-/* Calculate the link level from a given rx_buffer */
-static void at76_calc_level(struct at76_priv *priv, struct at76_rx_buffer *buf,
- struct iw_quality *qual)
-{
- /* just a guess for now, might be different for other chips */
- int max_rssi = 42;
-
- qual->level = (buf->rssi * 100 / max_rssi);
- if (qual->level > 100)
- qual->level = 100;
- qual->updated |= IW_QUAL_LEVEL_UPDATED;
-}
-
-/* Calculate the link quality from a given rx_buffer */
-static void at76_calc_qual(struct at76_priv *priv, struct at76_rx_buffer *buf,
- struct iw_quality *qual)
-{
- if (at76_is_intersil(priv->board_type))
- qual->qual = buf->link_quality;
- else {
- unsigned long elapsed;
-
- /* Update qual at most once a second */
- elapsed = jiffies - priv->beacons_last_qual;
- if (elapsed < 1 * HZ)
- return;
-
- qual->qual = qual->level * priv->beacons_received *
- msecs_to_jiffies(priv->beacon_period) / elapsed;
-
- priv->beacons_last_qual = jiffies;
- priv->beacons_received = 0;
- }
- qual->qual = (qual->qual > 100) ? 100 : qual->qual;
- qual->updated |= IW_QUAL_QUAL_UPDATED;
-}
-
-/* Calculate the noise quality from a given rx_buffer */
-static void at76_calc_noise(struct at76_priv *priv, struct at76_rx_buffer *buf,
- struct iw_quality *qual)
-{
- qual->noise = 0;
- qual->updated |= IW_QUAL_NOISE_INVALID;
-}
-
-static void at76_update_wstats(struct at76_priv *priv,
- struct at76_rx_buffer *buf)
-{
- struct iw_quality *qual = &priv->wstats.qual;
-
- if (buf->rssi && priv->mac_state == MAC_CONNECTED) {
- qual->updated = 0;
- at76_calc_level(priv, buf, qual);
- at76_calc_qual(priv, buf, qual);
- at76_calc_noise(priv, buf, qual);
- } else {
- qual->qual = 0;
- qual->level = 0;
- qual->noise = 0;
- qual->updated = IW_QUAL_ALL_INVALID;
- }
-}
-
-static void at76_rx_mgmt(struct at76_priv *priv, struct at76_rx_buffer *buf)
-{
- struct ieee80211_hdr_3addr *mgmt =
- (struct ieee80211_hdr_3addr *)buf->packet;
- u16 framectl = le16_to_cpu(mgmt->frame_ctl);
-
- /* update wstats */
- if (priv->mac_state != MAC_INIT && priv->mac_state != MAC_SCANNING) {
- /* jal: this is a dirty hack needed by Tim in ad-hoc mode */
- /* Data packets always seem to have a 0 link level, so we
- only read link quality info from management packets.
- Atmel driver actually averages the present, and previous
- values, we just present the raw value at the moment - TJS */
- if (priv->iw_mode == IW_MODE_ADHOC
- || (priv->curr_bss
- && !compare_ether_addr(mgmt->addr3,
- priv->curr_bss->bssid)))
- at76_update_wstats(priv, buf);
- }
-
- at76_dbg(DBG_RX_MGMT_CONTENT, "%s rx mgmt framectl 0x%x %s",
- priv->netdev->name, framectl,
- hex2str(mgmt, le16_to_cpu(buf->wlength)));
-
- switch (framectl & IEEE80211_FCTL_STYPE) {
- case IEEE80211_STYPE_BEACON:
- case IEEE80211_STYPE_PROBE_RESP:
- at76_rx_mgmt_beacon(priv, buf);
- break;
-
- case IEEE80211_STYPE_ASSOC_RESP:
- at76_rx_mgmt_assoc(priv, buf);
- break;
-
- case IEEE80211_STYPE_DISASSOC:
- at76_rx_mgmt_disassoc(priv, buf);
- break;
-
- case IEEE80211_STYPE_AUTH:
- at76_rx_mgmt_auth(priv, buf);
- break;
-
- case IEEE80211_STYPE_DEAUTH:
- at76_rx_mgmt_deauth(priv, buf);
- break;
-
- default:
- printk(KERN_DEBUG "%s: ignoring frame with framectl 0x%04x\n",
- priv->netdev->name, framectl);
- }
-
- return;
-}
-
-/* Convert the 802.11 header into an ethernet-style header, make skb
- * ready for consumption by netif_rx() */
-static void at76_ieee80211_to_eth(struct sk_buff *skb, int iw_mode)
-{
- struct ieee80211_hdr_3addr *i802_11_hdr;
- struct ethhdr *eth_hdr_p;
- u8 *src_addr;
- u8 *dest_addr;
-
- i802_11_hdr = (struct ieee80211_hdr_3addr *)skb->data;
-
- /* That would be the ethernet header if the hardware converted
- * the frame for us. Make sure the source and the destination
- * match the 802.11 header. Which hardware does it? */
- eth_hdr_p = (struct ethhdr *)skb_pull(skb, IEEE80211_3ADDR_LEN);
-
- dest_addr = i802_11_hdr->addr1;
- if (iw_mode == IW_MODE_ADHOC)
- src_addr = i802_11_hdr->addr2;
- else
- src_addr = i802_11_hdr->addr3;
-
- if (!compare_ether_addr(eth_hdr_p->h_source, src_addr) &&
- !compare_ether_addr(eth_hdr_p->h_dest, dest_addr))
- /* Yes, we already have an ethernet header */
- skb_reset_mac_header(skb);
- else {
- u16 len;
-
- /* Need to build an ethernet header */
- if (!memcmp(skb->data, snapsig, sizeof(snapsig))) {
- /* SNAP frame - decapsulate, keep proto */
- skb_push(skb, offsetof(struct ethhdr, h_proto) -
- sizeof(rfc1042sig));
- len = 0;
- } else {
- /* 802.3 frame, proto is length */
- len = skb->len;
- skb_push(skb, ETH_HLEN);
- }
-
- skb_reset_mac_header(skb);
- eth_hdr_p = eth_hdr(skb);
- /* This needs to be done in this order (eth_hdr_p->h_dest may
- * overlap src_addr) */
- memcpy(eth_hdr_p->h_source, src_addr, ETH_ALEN);
- memcpy(eth_hdr_p->h_dest, dest_addr, ETH_ALEN);
- if (len)
- eth_hdr_p->h_proto = htons(len);
- }
-
- skb->protocol = eth_type_trans(skb, skb->dev);
-}
-
-/* Check for fragmented data in priv->rx_skb. If the packet was no fragment
- or it was the last of a fragment set a skb containing the whole packet
- is returned for further processing. Otherwise we get NULL and are
- done and the packet is either stored inside the fragment buffer
- or thrown away. Every returned skb starts with the ieee802_11 header
- and contains _no_ FCS at the end */
-static struct sk_buff *at76_check_for_rx_frags(struct at76_priv *priv)
-{
- struct sk_buff *skb = priv->rx_skb;
- struct at76_rx_buffer *buf = (struct at76_rx_buffer *)skb->data;
- struct ieee80211_hdr_3addr *i802_11_hdr =
- (struct ieee80211_hdr_3addr *)buf->packet;
- /* seq_ctrl, fragment_number, sequence number of new packet */
- u16 sctl = le16_to_cpu(i802_11_hdr->seq_ctl);
- u16 fragnr = sctl & 0xf;
- u16 seqnr = sctl >> 4;
- u16 frame_ctl = le16_to_cpu(i802_11_hdr->frame_ctl);
-
- /* Length including the IEEE802.11 header, but without the trailing
- * FCS and without the Atmel Rx header */
- int length = le16_to_cpu(buf->wlength) - IEEE80211_FCS_LEN;
-
- /* where does the data payload start in skb->data ? */
- u8 *data = i802_11_hdr->payload;
-
- /* length of payload, excl. the trailing FCS */
- int data_len = length - IEEE80211_3ADDR_LEN;
-
- int i;
- struct rx_data_buf *bptr, *optr;
- unsigned long oldest = ~0UL;
-
- at76_dbg(DBG_RX_FRAGS,
- "%s: rx data frame_ctl %04x addr2 %pM seq/frag %d/%d "
- "length %d data %d: %s ...", priv->netdev->name, frame_ctl,
- i802_11_hdr->addr2, seqnr, fragnr, length, data_len,
- hex2str(data, 32));
-
- at76_dbg(DBG_RX_FRAGS_SKB, "%s: incoming skb: head %p data %p "
- "tail %p end %p len %d", priv->netdev->name, skb->head,
- skb->data, skb_tail_pointer(skb), skb_end_pointer(skb),
- skb->len);
-
- if (data_len < 0) {
- /* make sure data starts in the buffer */
- printk(KERN_INFO "%s: data frame too short\n",
- priv->netdev->name);
- return NULL;
- }
-
- WARN_ON(length <= AT76_RX_HDRLEN);
- if (length <= AT76_RX_HDRLEN)
- return NULL;
-
- /* remove the at76_rx_buffer header - we don't need it anymore */
- /* we need the IEEE802.11 header (for the addresses) if this packet
- is the first of a chain */
- skb_pull(skb, AT76_RX_HDRLEN);
-
- /* remove FCS at end */
- skb_trim(skb, length);
-
- at76_dbg(DBG_RX_FRAGS_SKB, "%s: trimmed skb: head %p data %p tail %p "
- "end %p len %d data %p data_len %d", priv->netdev->name,
- skb->head, skb->data, skb_tail_pointer(skb),
- skb_end_pointer(skb), skb->len, data, data_len);
-
- if (fragnr == 0 && !(frame_ctl & IEEE80211_FCTL_MOREFRAGS)) {
- /* unfragmented packet received */
- /* Use a new skb for the next receive */
- priv->rx_skb = NULL;
- at76_dbg(DBG_RX_FRAGS, "%s: unfragmented", priv->netdev->name);
- return skb;
- }
-
- /* look if we've got a chain for the sender address.
- afterwards optr points to first free or the oldest entry,
- or, if i < NR_RX_DATA_BUF, bptr points to the entry for the
- sender address */
- /* determining the oldest entry doesn't cope with jiffies wrapping
- but I don't care to delete a young entry at these rare moments ... */
-
- bptr = priv->rx_data;
- optr = NULL;
- for (i = 0; i < NR_RX_DATA_BUF; i++, bptr++) {
- if (!bptr->skb) {
- optr = bptr;
- oldest = 0UL;
- continue;
- }
-
- if (!compare_ether_addr(i802_11_hdr->addr2, bptr->sender))
- break;
-
- if (!optr) {
- optr = bptr;
- oldest = bptr->last_rx;
- } else if (bptr->last_rx < oldest)
- optr = bptr;
- }
-
- if (i < NR_RX_DATA_BUF) {
-
- at76_dbg(DBG_RX_FRAGS, "%s: %d. cacheentry (seq/frag = %d/%d) "
- "matched sender addr",
- priv->netdev->name, i, bptr->seqnr, bptr->fragnr);
-
- /* bptr points to an entry for the sender address */
- if (bptr->seqnr == seqnr) {
- int left;
- /* the fragment has the current sequence number */
- if (((bptr->fragnr + 1) & 0xf) != fragnr) {
- /* wrong fragment number -> ignore it */
- /* is & 0xf necessary above ??? */
- at76_dbg(DBG_RX_FRAGS,
- "%s: frag nr mismatch: %d + 1 != %d",
- priv->netdev->name, bptr->fragnr,
- fragnr);
- return NULL;
- }
- bptr->last_rx = jiffies;
- /* the next following fragment number ->
- add the data at the end */
-
- /* for test only ??? */
- left = skb_tailroom(bptr->skb);
- if (left < data_len)
- printk(KERN_INFO
- "%s: only %d byte free (need %d)\n",
- priv->netdev->name, left, data_len);
- else
- memcpy(skb_put(bptr->skb, data_len), data,
- data_len);
-
- bptr->fragnr = fragnr;
- if (frame_ctl & IEEE80211_FCTL_MOREFRAGS)
- return NULL;
-
- /* this was the last fragment - send it */
- skb = bptr->skb;
- bptr->skb = NULL; /* free the entry */
- at76_dbg(DBG_RX_FRAGS, "%s: last frag of seq %d",
- priv->netdev->name, seqnr);
- return skb;
- }
-
- /* got another sequence number */
- if (fragnr == 0) {
- /* it's the start of a new chain - replace the
- old one by this */
- /* bptr->sender has the correct value already */
- at76_dbg(DBG_RX_FRAGS,
- "%s: start of new seq %d, removing old seq %d",
- priv->netdev->name, seqnr, bptr->seqnr);
- bptr->seqnr = seqnr;
- bptr->fragnr = 0;
- bptr->last_rx = jiffies;
- /* swap bptr->skb and priv->rx_skb */
- skb = bptr->skb;
- bptr->skb = priv->rx_skb;
- priv->rx_skb = skb;
- } else {
- /* it from the middle of a new chain ->
- delete the old entry and skip the new one */
- at76_dbg(DBG_RX_FRAGS,
- "%s: middle of new seq %d (%d) "
- "removing old seq %d",
- priv->netdev->name, seqnr, fragnr,
- bptr->seqnr);
- dev_kfree_skb(bptr->skb);
- bptr->skb = NULL;
- }
- return NULL;
- }
-
- /* if we didn't find a chain for the sender address, optr
- points either to the first free or the oldest entry */
-
- if (fragnr != 0) {
- /* this is not the begin of a fragment chain ... */
- at76_dbg(DBG_RX_FRAGS,
- "%s: no chain for non-first fragment (%d)",
- priv->netdev->name, fragnr);
- return NULL;
- }
-
- BUG_ON(!optr);
- if (optr->skb) {
- /* swap the skb's */
- skb = optr->skb;
- optr->skb = priv->rx_skb;
- priv->rx_skb = skb;
-
- at76_dbg(DBG_RX_FRAGS,
- "%s: free old contents: sender %pM seq/frag %d/%d",
- priv->netdev->name, optr->sender,
- optr->seqnr, optr->fragnr);
-
- } else {
- /* take the skb from priv->rx_skb */
- optr->skb = priv->rx_skb;
- /* let at76_submit_rx_urb() allocate a new skb */
- priv->rx_skb = NULL;
-
- at76_dbg(DBG_RX_FRAGS, "%s: use a free entry",
- priv->netdev->name);
- }
- memcpy(optr->sender, i802_11_hdr->addr2, ETH_ALEN);
- optr->seqnr = seqnr;
- optr->fragnr = 0;
- optr->last_rx = jiffies;
-
- return NULL;
-}
-
-/* Rx interrupt: we expect the complete data buffer in priv->rx_skb */
-static void at76_rx_data(struct at76_priv *priv)
-{
- struct net_device *netdev = priv->netdev;
- struct net_device_stats *stats = &priv->stats;
- struct sk_buff *skb = priv->rx_skb;
- struct at76_rx_buffer *buf = (struct at76_rx_buffer *)skb->data;
- struct ieee80211_hdr_3addr *i802_11_hdr;
- int length = le16_to_cpu(buf->wlength);
-
- at76_dbg(DBG_RX_DATA, "%s received data packet: %s", netdev->name,
- hex2str(skb->data, AT76_RX_HDRLEN));
-
- at76_dbg(DBG_RX_DATA_CONTENT, "rx packet: %s",
- hex2str(skb->data + AT76_RX_HDRLEN, length));
-
- skb = at76_check_for_rx_frags(priv);
- if (!skb)
- return;
-
- /* Atmel header and the FCS are already removed */
- i802_11_hdr = (struct ieee80211_hdr_3addr *)skb->data;
-
- skb->dev = netdev;
- skb->ip_summed = CHECKSUM_NONE; /* TODO: should check CRC */
-
- if (is_broadcast_ether_addr(i802_11_hdr->addr1)) {
- if (!compare_ether_addr(i802_11_hdr->addr1, netdev->broadcast))
- skb->pkt_type = PACKET_BROADCAST;
- else
- skb->pkt_type = PACKET_MULTICAST;
- } else if (compare_ether_addr(i802_11_hdr->addr1, netdev->dev_addr))
- skb->pkt_type = PACKET_OTHERHOST;
-
- at76_ieee80211_to_eth(skb, priv->iw_mode);
-
- netdev->last_rx = jiffies;
- netif_rx(skb);
- stats->rx_packets++;
- stats->rx_bytes += length;
-
- return;
-}
-
-static void at76_rx_monitor_mode(struct at76_priv *priv)
-{
- struct at76_rx_radiotap *rt;
- u8 *payload;
- int skblen;
- struct net_device *netdev = priv->netdev;
- struct at76_rx_buffer *buf =
- (struct at76_rx_buffer *)priv->rx_skb->data;
- /* length including the IEEE802.11 header and the trailing FCS,
- but not at76_rx_buffer */
- int length = le16_to_cpu(buf->wlength);
- struct sk_buff *skb = priv->rx_skb;
- struct net_device_stats *stats = &priv->stats;
-
- if (length < IEEE80211_FCS_LEN) {
- /* buffer contains no data */
- at76_dbg(DBG_MONITOR_MODE,
- "%s: MONITOR MODE: rx skb without data",
- priv->netdev->name);
- return;
- }
-
- skblen = sizeof(struct at76_rx_radiotap) + length;
-
- skb = dev_alloc_skb(skblen);
- if (!skb) {
- printk(KERN_ERR "%s: MONITOR MODE: dev_alloc_skb for radiotap "
- "header returned NULL\n", priv->netdev->name);
- return;
- }
-
- skb_put(skb, skblen);
-
- rt = (struct at76_rx_radiotap *)skb->data;
- payload = skb->data + sizeof(struct at76_rx_radiotap);
-
- rt->rt_hdr.it_version = 0;
- rt->rt_hdr.it_pad = 0;
- rt->rt_hdr.it_len = cpu_to_le16(sizeof(struct at76_rx_radiotap));
- rt->rt_hdr.it_present = cpu_to_le32(AT76_RX_RADIOTAP_PRESENT);
-
- rt->rt_tsft = cpu_to_le64(le32_to_cpu(buf->rx_time));
- rt->rt_rate = hw_rates[buf->rx_rate] & (~0x80);
- rt->rt_signal = buf->rssi;
- rt->rt_noise = buf->noise_level;
- rt->rt_flags = IEEE80211_RADIOTAP_F_FCS;
- if (buf->fragmentation)
- rt->rt_flags |= IEEE80211_RADIOTAP_F_FRAG;
-
- memcpy(payload, buf->packet, length);
- skb->dev = netdev;
- skb->ip_summed = CHECKSUM_NONE;
- skb_reset_mac_header(skb);
- skb->pkt_type = PACKET_OTHERHOST;
- skb->protocol = htons(ETH_P_802_2);
-
- netdev->last_rx = jiffies;
- netif_rx(skb);
- stats->rx_packets++;
- stats->rx_bytes += length;
-}
-
-/* Check if we spy on the sender address in buf and update stats */
-static void at76_iwspy_update(struct at76_priv *priv,
- struct at76_rx_buffer *buf)
-{
- struct ieee80211_hdr_3addr *hdr =
- (struct ieee80211_hdr_3addr *)buf->packet;
- struct iw_quality qual;
-
- /* We can only set the level here */
- qual.updated = IW_QUAL_QUAL_INVALID | IW_QUAL_NOISE_INVALID;
- qual.level = 0;
- qual.noise = 0;
- at76_calc_level(priv, buf, &qual);
-
- spin_lock_bh(&priv->spy_spinlock);
-
- if (priv->spy_data.spy_number > 0)
- wireless_spy_update(priv->netdev, hdr->addr2, &qual);
-
- spin_unlock_bh(&priv->spy_spinlock);
-}
-
-static void at76_rx_tasklet(unsigned long param)
-{
- struct urb *urb = (struct urb *)param;
- struct at76_priv *priv = urb->context;
- struct net_device *netdev = priv->netdev;
- struct at76_rx_buffer *buf;
- struct ieee80211_hdr_3addr *i802_11_hdr;
- u16 frame_ctl;
-
- if (priv->device_unplugged) {
- at76_dbg(DBG_DEVSTART, "device unplugged");
- if (urb)
- at76_dbg(DBG_DEVSTART, "urb status %d", urb->status);
- return;
- }
-
- if (!priv->rx_skb || !netdev || !priv->rx_skb->data)
- return;
-
- buf = (struct at76_rx_buffer *)priv->rx_skb->data;
-
- i802_11_hdr = (struct ieee80211_hdr_3addr *)buf->packet;
-
- frame_ctl = le16_to_cpu(i802_11_hdr->frame_ctl);
-
- if (urb->status != 0) {
- if (urb->status != -ENOENT && urb->status != -ECONNRESET)
- at76_dbg(DBG_URB,
- "%s %s: - nonzero Rx bulk status received: %d",
- __func__, netdev->name, urb->status);
- return;
- }
-
- at76_dbg(DBG_RX_ATMEL_HDR,
- "%s: rx frame: rate %d rssi %d noise %d link %d %s",
- priv->netdev->name, buf->rx_rate, buf->rssi, buf->noise_level,
- buf->link_quality, hex2str(i802_11_hdr, 48));
- if (priv->iw_mode == IW_MODE_MONITOR) {
- at76_rx_monitor_mode(priv);
- goto exit;
- }
-
- /* there is a new bssid around, accept it: */
- if (buf->newbss && priv->iw_mode == IW_MODE_ADHOC) {
- at76_dbg(DBG_PROGRESS, "%s: rx newbss", netdev->name);
- schedule_work(&priv->work_new_bss);
- }
-
- switch (frame_ctl & IEEE80211_FCTL_FTYPE) {
- case IEEE80211_FTYPE_DATA:
- at76_rx_data(priv);
- break;
-
- case IEEE80211_FTYPE_MGMT:
- /* jal: TODO: find out if we can update iwspy also on
- other frames than management (might depend on the
- radio chip / firmware version !) */
-
- at76_iwspy_update(priv, buf);
-
- at76_rx_mgmt(priv, buf);
- break;
-
- case IEEE80211_FTYPE_CTL:
- at76_dbg(DBG_RX_CTRL, "%s: ignored ctrl frame: %04x",
- priv->netdev->name, frame_ctl);
- break;
-
- default:
- printk(KERN_DEBUG "%s: ignoring frame with framectl 0x%04x\n",
- priv->netdev->name, frame_ctl);
- }
-exit:
- at76_submit_rx_urb(priv);
-}
-
-/* Load firmware into kernel memory and parse it */
-static struct fwentry *at76_load_firmware(struct usb_device *udev,
- enum board_type board_type)
-{
- int ret;
- char *str;
- struct at76_fw_header *fwh;
- struct fwentry *fwe = &firmwares[board_type];
-
- mutex_lock(&fw_mutex);
-
- if (fwe->loaded) {
- at76_dbg(DBG_FW, "re-using previously loaded fw");
- goto exit;
- }
-
- at76_dbg(DBG_FW, "downloading firmware %s", fwe->fwname);
- ret = request_firmware(&fwe->fw, fwe->fwname, &udev->dev);
- if (ret < 0) {
- dev_printk(KERN_ERR, &udev->dev, "firmware %s not found!\n",
- fwe->fwname);
- dev_printk(KERN_ERR, &udev->dev,
- "you may need to download the firmware from "
- "http://developer.berlios.de/projects/at76c503a/");
- goto exit;
- }
-
- at76_dbg(DBG_FW, "got it.");
- fwh = (struct at76_fw_header *)(fwe->fw->data);
-
- if (fwe->fw->size <= sizeof(*fwh)) {
- dev_printk(KERN_ERR, &udev->dev,
- "firmware is too short (0x%zx)\n", fwe->fw->size);
- goto exit;
- }
-
- /* CRC currently not checked */
- fwe->board_type = le32_to_cpu(fwh->board_type);
- if (fwe->board_type != board_type) {
- dev_printk(KERN_ERR, &udev->dev,
- "board type mismatch, requested %u, got %u\n",
- board_type, fwe->board_type);
- goto exit;
- }
-
- fwe->fw_version.major = fwh->major;
- fwe->fw_version.minor = fwh->minor;
- fwe->fw_version.patch = fwh->patch;
- fwe->fw_version.build = fwh->build;
-
- str = (char *)fwh + le32_to_cpu(fwh->str_offset);
- fwe->intfw = (u8 *)fwh + le32_to_cpu(fwh->int_fw_offset);
- fwe->intfw_size = le32_to_cpu(fwh->int_fw_len);
- fwe->extfw = (u8 *)fwh + le32_to_cpu(fwh->ext_fw_offset);
- fwe->extfw_size = le32_to_cpu(fwh->ext_fw_len);
-
- fwe->loaded = 1;
-
- dev_printk(KERN_DEBUG, &udev->dev,
- "using firmware %s (version %d.%d.%d-%d)\n",
- fwe->fwname, fwh->major, fwh->minor, fwh->patch, fwh->build);
-
- at76_dbg(DBG_DEVSTART, "board %u, int %d:%d, ext %d:%d", board_type,
- le32_to_cpu(fwh->int_fw_offset), le32_to_cpu(fwh->int_fw_len),
- le32_to_cpu(fwh->ext_fw_offset), le32_to_cpu(fwh->ext_fw_len));
- at76_dbg(DBG_DEVSTART, "firmware id %s", str);
-
-exit:
- mutex_unlock(&fw_mutex);
-
- if (fwe->loaded)
- return fwe;
- else
- return NULL;
-}
-
-/* Allocate network device and initialize private data */
-static struct at76_priv *at76_alloc_new_device(struct usb_device *udev)
-{
- struct net_device *netdev;
- struct at76_priv *priv;
- int i;
-
- /* allocate memory for our device state and initialize it */
- netdev = alloc_etherdev(sizeof(struct at76_priv));
- if (!netdev) {
- dev_printk(KERN_ERR, &udev->dev, "out of memory\n");
- return NULL;
- }
-
- priv = netdev_priv(netdev);
-
- priv->udev = udev;
- priv->netdev = netdev;
-
- mutex_init(&priv->mtx);
- INIT_WORK(&priv->work_assoc_done, at76_work_assoc_done);
- INIT_WORK(&priv->work_join, at76_work_join);
- INIT_WORK(&priv->work_new_bss, at76_work_new_bss);
- INIT_WORK(&priv->work_start_scan, at76_work_start_scan);
- INIT_WORK(&priv->work_set_promisc, at76_work_set_promisc);
- INIT_WORK(&priv->work_submit_rx, at76_work_submit_rx);
- INIT_DELAYED_WORK(&priv->dwork_restart, at76_dwork_restart);
- INIT_DELAYED_WORK(&priv->dwork_get_scan, at76_dwork_get_scan);
- INIT_DELAYED_WORK(&priv->dwork_beacon, at76_dwork_beacon);
- INIT_DELAYED_WORK(&priv->dwork_auth, at76_dwork_auth);
- INIT_DELAYED_WORK(&priv->dwork_assoc, at76_dwork_assoc);
-
- spin_lock_init(&priv->mgmt_spinlock);
- priv->next_mgmt_bulk = NULL;
- priv->mac_state = MAC_INIT;
-
- /* initialize empty BSS list */
- priv->curr_bss = NULL;
- INIT_LIST_HEAD(&priv->bss_list);
- spin_lock_init(&priv->bss_list_spinlock);
-
- init_timer(&priv->bss_list_timer);
- priv->bss_list_timer.data = (unsigned long)priv;
- priv->bss_list_timer.function = at76_bss_list_timeout;
-
- spin_lock_init(&priv->spy_spinlock);
-
- /* mark all rx data entries as unused */
- for (i = 0; i < NR_RX_DATA_BUF; i++)
- priv->rx_data[i].skb = NULL;
-
- priv->rx_tasklet.func = at76_rx_tasklet;
- priv->rx_tasklet.data = 0;
-
- priv->pm_mode = AT76_PM_OFF;
- priv->pm_period = 0;
-
- return priv;
-}
-
-static int at76_alloc_urbs(struct at76_priv *priv,
- struct usb_interface *interface)
-{
- struct usb_endpoint_descriptor *endpoint, *ep_in, *ep_out;
- int i;
- int buffer_size;
- struct usb_host_interface *iface_desc;
-
- at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
-
- at76_dbg(DBG_URB, "%s: NumEndpoints %d ", __func__,
- interface->altsetting[0].desc.bNumEndpoints);
-
- ep_in = NULL;
- ep_out = NULL;
- iface_desc = interface->cur_altsetting;
- for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) {
- endpoint = &iface_desc->endpoint[i].desc;
-
- at76_dbg(DBG_URB, "%s: %d. endpoint: addr 0x%x attr 0x%x",
- __func__, i, endpoint->bEndpointAddress,
- endpoint->bmAttributes);
-
- if (!ep_in && usb_endpoint_is_bulk_in(endpoint))
- ep_in = endpoint;
-
- if (!ep_out && usb_endpoint_is_bulk_out(endpoint))
- ep_out = endpoint;
- }
-
- if (!ep_in || !ep_out) {
- dev_printk(KERN_ERR, &interface->dev,
- "bulk endpoints missing\n");
- return -ENXIO;
- }
-
- priv->rx_pipe = usb_rcvbulkpipe(priv->udev, ep_in->bEndpointAddress);
- priv->tx_pipe = usb_sndbulkpipe(priv->udev, ep_out->bEndpointAddress);
-
- priv->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
- priv->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
- if (!priv->rx_urb || !priv->tx_urb) {
- dev_printk(KERN_ERR, &interface->dev, "cannot allocate URB\n");
- return -ENOMEM;
- }
-
- buffer_size = sizeof(struct at76_tx_buffer) + MAX_PADDING_SIZE;
- priv->bulk_out_buffer = kmalloc(buffer_size, GFP_KERNEL);
- if (!priv->bulk_out_buffer) {
- dev_printk(KERN_ERR, &interface->dev,
- "cannot allocate output buffer\n");
- return -ENOMEM;
- }
-
- at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
-
- return 0;
-}
-
-static const struct net_device_ops at76_netdev_ops = {
- .ndo_open = at76_open,
- .ndo_stop = at76_stop,
- .ndo_get_stats = at76_get_stats,
- .ndo_start_xmit = at76_tx,
- .ndo_tx_timeout = at76_tx_timeout,
- .ndo_set_multicast_list = at76_set_multicast,
- .ndo_set_mac_address = at76_set_mac_address,
- .ndo_validate_addr = eth_validate_addr,
- .ndo_change_mtu = eth_change_mtu,
-};
-
-/* Register network device and initialize the hardware */
-static int at76_init_new_device(struct at76_priv *priv,
- struct usb_interface *interface)
-{
- struct net_device *netdev = priv->netdev;
- int ret;
-
- /* set up the endpoint information */
- /* check out the endpoints */
-
- at76_dbg(DBG_DEVSTART, "USB interface: %d endpoints",
- interface->cur_altsetting->desc.bNumEndpoints);
-
- ret = at76_alloc_urbs(priv, interface);
- if (ret < 0)
- goto exit;
-
- /* MAC address */
- ret = at76_get_hw_config(priv);
- if (ret < 0) {
- dev_printk(KERN_ERR, &interface->dev,
- "cannot get MAC address\n");
- goto exit;
- }
-
- priv->domain = at76_get_reg_domain(priv->regulatory_domain);
- /* init. netdev->dev_addr */
- memcpy(netdev->dev_addr, priv->mac_addr, ETH_ALEN);
-
- priv->channel = DEF_CHANNEL;
- priv->iw_mode = IW_MODE_INFRA;
- priv->rts_threshold = DEF_RTS_THRESHOLD;
- priv->frag_threshold = DEF_FRAG_THRESHOLD;
- priv->short_retry_limit = DEF_SHORT_RETRY_LIMIT;
- priv->txrate = TX_RATE_AUTO;
- priv->preamble_type = PREAMBLE_TYPE_LONG;
- priv->beacon_period = 100;
- priv->beacons_last_qual = jiffies;
- priv->auth_mode = WLAN_AUTH_OPEN;
- priv->scan_min_time = DEF_SCAN_MIN_TIME;
- priv->scan_max_time = DEF_SCAN_MAX_TIME;
- priv->scan_mode = SCAN_TYPE_ACTIVE;
-
- netdev->flags &= ~IFF_MULTICAST; /* not yet or never */
- netdev->netdev_ops = &at76_netdev_ops;
- netdev->ethtool_ops = &at76_ethtool_ops;
-
- /* Add pointers to enable iwspy support. */
- priv->wireless_data.spy_data = &priv->spy_data;
-#ifdef CONFIG_WIRELESS_EXT
- netdev->wireless_data = &priv->wireless_data;
- netdev->wireless_handlers = &at76_handler_def;
-#endif
-
- netdev->watchdog_timeo = 2 * HZ;
- dev_alloc_name(netdev, "wlan%d");
-
- ret = register_netdev(priv->netdev);
- if (ret) {
- dev_printk(KERN_ERR, &interface->dev,
- "cannot register netdevice (status %d)!\n", ret);
- goto exit;
- }
- priv->netdev_registered = 1;
-
- printk(KERN_INFO "%s: USB %s, MAC %pM, firmware %d.%d.%d-%d\n",
- netdev->name, dev_name(&interface->dev), priv->mac_addr,
- priv->fw_version.major, priv->fw_version.minor,
- priv->fw_version.patch, priv->fw_version.build);
- printk(KERN_INFO "%s: regulatory domain 0x%02x: %s\n", netdev->name,
- priv->regulatory_domain, priv->domain->name);
-
- /* we let this timer run the whole time this driver instance lives */
- mod_timer(&priv->bss_list_timer, jiffies + BSS_LIST_TIMEOUT);
-
-exit:
- return ret;
-}
-
-static void at76_delete_device(struct at76_priv *priv)
-{
- int i;
-
- at76_dbg(DBG_PROC_ENTRY, "%s: ENTER", __func__);
-
- /* The device is gone, don't bother turning it off */
- priv->device_unplugged = 1;
-
- if (priv->netdev_registered)
- unregister_netdev(priv->netdev);
-
- /* assuming we used keventd, it must quiesce too */
- flush_scheduled_work();
-
- kfree(priv->bulk_out_buffer);
-
- if (priv->tx_urb) {
- usb_kill_urb(priv->tx_urb);
- usb_free_urb(priv->tx_urb);
- }
- if (priv->rx_urb) {
- usb_kill_urb(priv->rx_urb);
- usb_free_urb(priv->rx_urb);
- }
-
- at76_dbg(DBG_PROC_ENTRY, "%s: unlinked urbs", __func__);
-
- kfree_skb(priv->rx_skb);
-
- at76_free_bss_list(priv);
- del_timer_sync(&priv->bss_list_timer);
- cancel_delayed_work(&priv->dwork_get_scan);
- cancel_delayed_work(&priv->dwork_beacon);
- cancel_delayed_work(&priv->dwork_auth);
- cancel_delayed_work(&priv->dwork_assoc);
-
- if (priv->mac_state == MAC_CONNECTED)
- at76_iwevent_bss_disconnect(priv->netdev);
-
- for (i = 0; i < NR_RX_DATA_BUF; i++)
- if (priv->rx_data[i].skb) {
- dev_kfree_skb(priv->rx_data[i].skb);
- priv->rx_data[i].skb = NULL;
- }
- usb_put_dev(priv->udev);
-
- at76_dbg(DBG_PROC_ENTRY, "%s: before freeing priv/netdev", __func__);
- free_netdev(priv->netdev); /* priv is in netdev */
-
- at76_dbg(DBG_PROC_ENTRY, "%s: EXIT", __func__);
-}
-
-static int at76_probe(struct usb_interface *interface,
- const struct usb_device_id *id)
-{
- int ret;
- struct at76_priv *priv;
- struct fwentry *fwe;
- struct usb_device *udev;
- int op_mode;
- int need_ext_fw = 0;
- struct mib_fw_version fwv;
- int board_type = (int)id->driver_info;
-
- udev = usb_get_dev(interface_to_usbdev(interface));
-
- /* Load firmware into kernel memory */
- fwe = at76_load_firmware(udev, board_type);
- if (!fwe) {
- ret = -ENOENT;
- goto error;
- }
-
- op_mode = at76_get_op_mode(udev);
-
- at76_dbg(DBG_DEVSTART, "opmode %d", op_mode);
-
- /* we get OPMODE_NONE with 2.4.23, SMC2662W-AR ???
- we get 204 with 2.4.23, Fiberline FL-WL240u (505A+RFMD2958) ??? */
-
- if (op_mode == OPMODE_HW_CONFIG_MODE) {
- dev_printk(KERN_ERR, &interface->dev,
- "cannot handle a device in HW_CONFIG_MODE\n");
- ret = -EBUSY;
- goto error;
- }
-
- if (op_mode != OPMODE_NORMAL_NIC_WITH_FLASH
- && op_mode != OPMODE_NORMAL_NIC_WITHOUT_FLASH) {
- /* download internal firmware part */
- dev_printk(KERN_DEBUG, &interface->dev,
- "downloading internal firmware\n");
- ret = at76_load_internal_fw(udev, fwe);
- if (ret < 0) {
- dev_printk(KERN_ERR, &interface->dev,
- "error %d downloading internal firmware\n",
- ret);
- goto error;
- }
- usb_put_dev(udev);
- return ret;
- }
-
- /* Internal firmware already inside the device. Get firmware
- * version to test if external firmware is loaded.
- * This works only for newer firmware, e.g. the Intersil 0.90.x
- * says "control timeout on ep0in" and subsequent
- * at76_get_op_mode() fail too :-( */
-
- /* if version >= 0.100.x.y or device with built-in flash we can
- * query the device for the fw version */
- if ((fwe->fw_version.major > 0 || fwe->fw_version.minor >= 100)
- || (op_mode == OPMODE_NORMAL_NIC_WITH_FLASH)) {
- ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
- if (ret < 0 || (fwv.major | fwv.minor) == 0)
- need_ext_fw = 1;
- } else
- /* No way to check firmware version, reload to be sure */
- need_ext_fw = 1;
-
- if (need_ext_fw) {
- dev_printk(KERN_DEBUG, &interface->dev,
- "downloading external firmware\n");
-
- ret = at76_load_external_fw(udev, fwe);
- if (ret)
- goto error;
-
- /* Re-check firmware version */
- ret = at76_get_mib(udev, MIB_FW_VERSION, &fwv, sizeof(fwv));
- if (ret < 0) {
- dev_printk(KERN_ERR, &interface->dev,
- "error %d getting firmware version\n", ret);
- goto error;
- }
- }
-
- priv = at76_alloc_new_device(udev);
- if (!priv) {
- ret = -ENOMEM;
- goto error;
- }
-
- SET_NETDEV_DEV(priv->netdev, &interface->dev);
- usb_set_intfdata(interface, priv);
-
- memcpy(&priv->fw_version, &fwv, sizeof(struct mib_fw_version));
- priv->board_type = board_type;
-
- ret = at76_init_new_device(priv, interface);
- if (ret < 0)
- at76_delete_device(priv);
-
- return ret;
-
-error:
- usb_put_dev(udev);
- return ret;
-}
-
-static void at76_disconnect(struct usb_interface *interface)
-{
- struct at76_priv *priv;
-
- priv = usb_get_intfdata(interface);
- usb_set_intfdata(interface, NULL);
-
- /* Disconnect after loading internal firmware */
- if (!priv)
- return;
-
- printk(KERN_INFO "%s: disconnecting\n", priv->netdev->name);
- at76_delete_device(priv);
- dev_printk(KERN_INFO, &interface->dev, "disconnected\n");
-}
-
-/* Structure for registering this driver with the USB subsystem */
-static struct usb_driver at76_driver = {
- .name = DRIVER_NAME,
- .probe = at76_probe,
- .disconnect = at76_disconnect,
- .id_table = dev_table,
-};
-
-static int __init at76_mod_init(void)
-{
- int result;
-
- printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " loading\n");
-
- mutex_init(&fw_mutex);
-
- /* register this driver with the USB subsystem */
- result = usb_register(&at76_driver);
- if (result < 0)
- printk(KERN_ERR DRIVER_NAME
- ": usb_register failed (status %d)\n", result);
-
- led_trigger_register_simple("at76_usb-tx", &ledtrig_tx);
- return result;
-}
-
-static void __exit at76_mod_exit(void)
-{
- int i;
-
- printk(KERN_INFO DRIVER_DESC " " DRIVER_VERSION " unloading\n");
- usb_deregister(&at76_driver);
- for (i = 0; i < ARRAY_SIZE(firmwares); i++) {
- if (firmwares[i].fw)
- release_firmware(firmwares[i].fw);
- }
- led_trigger_unregister_simple(ledtrig_tx);
-}
-
-module_param_named(debug, at76_debug, int, 0600);
-MODULE_PARM_DESC(debug, "Debugging level");
-
-module_init(at76_mod_init);
-module_exit(at76_mod_exit);
-
-MODULE_AUTHOR("Oliver Kurth <oku@masqmail.cx>");
-MODULE_AUTHOR("Joerg Albert <joerg.albert@gmx.de>");
-MODULE_AUTHOR("Alex <alex@foogod.com>");
-MODULE_AUTHOR("Nick Jones");
-MODULE_AUTHOR("Balint Seeber <n0_5p4m_p13453@hotmail.com>");
-MODULE_AUTHOR("Pavel Roskin <proski@gnu.org>");
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_LICENSE("GPL");
projects / GitHub / MotorolaMobilityLLC / kernel-slsi.git / commitdiff