1 /*********************************************************************
5 * Description: IrDA sockets implementation
7 * Author: Dag Brattli <dagb@cs.uit.no>
8 * Created at: Sun May 31 10:12:43 1998
9 * Modified at: Sat Dec 25 21:10:23 1999
10 * Modified by: Dag Brattli <dag@brattli.net>
11 * Sources: af_netroom.c, af_ax25.c, af_rose.c, af_x25.c etc.
13 * Copyright (c) 1999 Dag Brattli <dagb@cs.uit.no>
14 * Copyright (c) 1999-2003 Jean Tourrilhes <jt@hpl.hp.com>
15 * All Rights Reserved.
17 * This program is free software; you can redistribute it and/or
18 * modify it under the terms of the GNU General Public License as
19 * published by the Free Software Foundation; either version 2 of
20 * the License, or (at your option) any later version.
22 * This program is distributed in the hope that it will be useful,
23 * but WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 * GNU General Public License for more details.
27 * You should have received a copy of the GNU General Public License
28 * along with this program; if not, write to the Free Software
29 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
32 * Linux-IrDA now supports four different types of IrDA sockets:
34 * o SOCK_STREAM: TinyTP connections with SAR disabled. The
35 * max SDU size is 0 for conn. of this type
36 * o SOCK_SEQPACKET: TinyTP connections with SAR enabled. TTP may
37 * fragment the messages, but will preserve
38 * the message boundaries
39 * o SOCK_DGRAM: IRDAPROTO_UNITDATA: TinyTP connections with Unitdata
40 * (unreliable) transfers
41 * IRDAPROTO_ULTRA: Connectionless and unreliable data
43 ********************************************************************/
45 #include <linux/capability.h>
46 #include <linux/module.h>
47 #include <linux/types.h>
48 #include <linux/socket.h>
49 #include <linux/sockios.h>
50 #include <linux/slab.h>
51 #include <linux/init.h>
52 #include <linux/net.h>
53 #include <linux/irda.h>
54 #include <linux/poll.h>
56 #include <asm/ioctls.h> /* TIOCOUTQ, TIOCINQ */
57 #include <asm/uaccess.h>
60 #include <net/tcp_states.h>
62 #include <net/irda/af_irda.h>
64 static int irda_create(struct net
*net
, struct socket
*sock
, int protocol
, int kern
);
66 static const struct proto_ops irda_stream_ops
;
67 static const struct proto_ops irda_seqpacket_ops
;
68 static const struct proto_ops irda_dgram_ops
;
70 #ifdef CONFIG_IRDA_ULTRA
71 static const struct proto_ops irda_ultra_ops
;
72 #define ULTRA_MAX_DATA 382
73 #endif /* CONFIG_IRDA_ULTRA */
75 #define IRDA_MAX_HEADER (TTP_MAX_HEADER)
78 * Function irda_data_indication (instance, sap, skb)
80 * Received some data from TinyTP. Just queue it on the receive queue
83 static int irda_data_indication(void *instance
, void *sap
, struct sk_buff
*skb
)
85 struct irda_sock
*self
;
89 IRDA_DEBUG(3, "%s()\n", __func__
);
94 err
= sock_queue_rcv_skb(sk
, skb
);
96 IRDA_DEBUG(1, "%s(), error: no more mem!\n", __func__
);
97 self
->rx_flow
= FLOW_STOP
;
99 /* When we return error, TTP will need to requeue the skb */
107 * Function irda_disconnect_indication (instance, sap, reason, skb)
109 * Connection has been closed. Check reason to find out why
112 static void irda_disconnect_indication(void *instance
, void *sap
,
113 LM_REASON reason
, struct sk_buff
*skb
)
115 struct irda_sock
*self
;
120 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
122 /* Don't care about it, but let's not leak it */
128 IRDA_DEBUG(0, "%s(%p) : BUG : sk is NULL\n",
133 /* Prevent race conditions with irda_release() and irda_shutdown() */
135 if (!sock_flag(sk
, SOCK_DEAD
) && sk
->sk_state
!= TCP_CLOSE
) {
136 sk
->sk_state
= TCP_CLOSE
;
137 sk
->sk_shutdown
|= SEND_SHUTDOWN
;
139 sk
->sk_state_change(sk
);
142 * If we leave it open, IrLMP put it back into the list of
143 * unconnected LSAPs. The problem is that any incoming request
144 * can then be matched to this socket (and it will be, because
145 * it is at the head of the list). This would prevent any
146 * listening socket waiting on the same TSAP to get those
147 * requests. Some apps forget to close sockets, or hang to it
148 * a bit too long, so we may stay in this dead state long
149 * enough to be noticed...
150 * Note : all socket function do check sk->sk_state, so we are
155 irttp_close_tsap(self
->tsap
);
161 /* Note : once we are there, there is not much you want to do
162 * with the socket anymore, apart from closing it.
163 * For example, bind() and connect() won't reset sk->sk_err,
164 * sk->sk_shutdown and sk->sk_flags to valid values...
170 * Function irda_connect_confirm (instance, sap, qos, max_sdu_size, skb)
172 * Connections has been confirmed by the remote device
175 static void irda_connect_confirm(void *instance
, void *sap
,
176 struct qos_info
*qos
,
177 __u32 max_sdu_size
, __u8 max_header_size
,
180 struct irda_sock
*self
;
185 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
194 // Should be ??? skb_queue_tail(&sk->sk_receive_queue, skb);
196 /* How much header space do we need to reserve */
197 self
->max_header_size
= max_header_size
;
199 /* IrTTP max SDU size in transmit direction */
200 self
->max_sdu_size_tx
= max_sdu_size
;
202 /* Find out what the largest chunk of data that we can transmit is */
203 switch (sk
->sk_type
) {
205 if (max_sdu_size
!= 0) {
206 IRDA_ERROR("%s: max_sdu_size must be 0\n",
210 self
->max_data_size
= irttp_get_max_seg_size(self
->tsap
);
213 if (max_sdu_size
== 0) {
214 IRDA_ERROR("%s: max_sdu_size cannot be 0\n",
218 self
->max_data_size
= max_sdu_size
;
221 self
->max_data_size
= irttp_get_max_seg_size(self
->tsap
);
224 IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __func__
,
225 self
->max_data_size
);
227 memcpy(&self
->qos_tx
, qos
, sizeof(struct qos_info
));
229 /* We are now connected! */
230 sk
->sk_state
= TCP_ESTABLISHED
;
231 sk
->sk_state_change(sk
);
235 * Function irda_connect_indication(instance, sap, qos, max_sdu_size, userdata)
237 * Incoming connection
240 static void irda_connect_indication(void *instance
, void *sap
,
241 struct qos_info
*qos
, __u32 max_sdu_size
,
242 __u8 max_header_size
, struct sk_buff
*skb
)
244 struct irda_sock
*self
;
249 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
257 /* How much header space do we need to reserve */
258 self
->max_header_size
= max_header_size
;
260 /* IrTTP max SDU size in transmit direction */
261 self
->max_sdu_size_tx
= max_sdu_size
;
263 /* Find out what the largest chunk of data that we can transmit is */
264 switch (sk
->sk_type
) {
266 if (max_sdu_size
!= 0) {
267 IRDA_ERROR("%s: max_sdu_size must be 0\n",
272 self
->max_data_size
= irttp_get_max_seg_size(self
->tsap
);
275 if (max_sdu_size
== 0) {
276 IRDA_ERROR("%s: max_sdu_size cannot be 0\n",
281 self
->max_data_size
= max_sdu_size
;
284 self
->max_data_size
= irttp_get_max_seg_size(self
->tsap
);
287 IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __func__
,
288 self
->max_data_size
);
290 memcpy(&self
->qos_tx
, qos
, sizeof(struct qos_info
));
292 skb_queue_tail(&sk
->sk_receive_queue
, skb
);
293 sk
->sk_state_change(sk
);
297 * Function irda_connect_response (handle)
299 * Accept incoming connection
302 static void irda_connect_response(struct irda_sock
*self
)
306 IRDA_DEBUG(2, "%s()\n", __func__
);
308 skb
= alloc_skb(TTP_MAX_HEADER
+ TTP_SAR_HEADER
, GFP_KERNEL
);
310 IRDA_DEBUG(0, "%s() Unable to allocate sk_buff!\n",
315 /* Reserve space for MUX_CONTROL and LAP header */
316 skb_reserve(skb
, IRDA_MAX_HEADER
);
318 irttp_connect_response(self
->tsap
, self
->max_sdu_size_rx
, skb
);
322 * Function irda_flow_indication (instance, sap, flow)
324 * Used by TinyTP to tell us if it can accept more data or not
327 static void irda_flow_indication(void *instance
, void *sap
, LOCAL_FLOW flow
)
329 struct irda_sock
*self
;
332 IRDA_DEBUG(2, "%s()\n", __func__
);
340 IRDA_DEBUG(1, "%s(), IrTTP wants us to slow down\n",
342 self
->tx_flow
= flow
;
345 self
->tx_flow
= flow
;
346 IRDA_DEBUG(1, "%s(), IrTTP wants us to start again\n",
348 wake_up_interruptible(sk_sleep(sk
));
351 IRDA_DEBUG(0, "%s(), Unknown flow command!\n", __func__
);
352 /* Unknown flow command, better stop */
353 self
->tx_flow
= flow
;
359 * Function irda_getvalue_confirm (obj_id, value, priv)
361 * Got answer from remote LM-IAS, just pass object to requester...
363 * Note : duplicate from above, but we need our own version that
364 * doesn't touch the dtsap_sel and save the full value structure...
366 static void irda_getvalue_confirm(int result
, __u16 obj_id
,
367 struct ias_value
*value
, void *priv
)
369 struct irda_sock
*self
;
373 IRDA_WARNING("%s: lost myself!\n", __func__
);
377 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
379 /* We probably don't need to make any more queries */
380 iriap_close(self
->iriap
);
383 /* Check if request succeeded */
384 if (result
!= IAS_SUCCESS
) {
385 IRDA_DEBUG(1, "%s(), IAS query failed! (%d)\n", __func__
,
388 self
->errno
= result
; /* We really need it later */
390 /* Wake up any processes waiting for result */
391 wake_up_interruptible(&self
->query_wait
);
396 /* Pass the object to the caller (so the caller must delete it) */
397 self
->ias_result
= value
;
400 /* Wake up any processes waiting for result */
401 wake_up_interruptible(&self
->query_wait
);
405 * Function irda_selective_discovery_indication (discovery)
407 * Got a selective discovery indication from IrLMP.
409 * IrLMP is telling us that this node is new and matching our hint bit
410 * filter. Wake up any process waiting for answer...
412 static void irda_selective_discovery_indication(discinfo_t
*discovery
,
416 struct irda_sock
*self
;
418 IRDA_DEBUG(2, "%s()\n", __func__
);
422 IRDA_WARNING("%s: lost myself!\n", __func__
);
426 /* Pass parameter to the caller */
427 self
->cachedaddr
= discovery
->daddr
;
429 /* Wake up process if its waiting for device to be discovered */
430 wake_up_interruptible(&self
->query_wait
);
434 * Function irda_discovery_timeout (priv)
436 * Timeout in the selective discovery process
438 * We were waiting for a node to be discovered, but nothing has come up
439 * so far. Wake up the user and tell him that we failed...
441 static void irda_discovery_timeout(u_long priv
)
443 struct irda_sock
*self
;
445 IRDA_DEBUG(2, "%s()\n", __func__
);
447 self
= (struct irda_sock
*) priv
;
448 BUG_ON(self
== NULL
);
450 /* Nothing for the caller */
451 self
->cachelog
= NULL
;
452 self
->cachedaddr
= 0;
453 self
->errno
= -ETIME
;
455 /* Wake up process if its still waiting... */
456 wake_up_interruptible(&self
->query_wait
);
460 * Function irda_open_tsap (self)
462 * Open local Transport Service Access Point (TSAP)
465 static int irda_open_tsap(struct irda_sock
*self
, __u8 tsap_sel
, char *name
)
470 IRDA_DEBUG(0, "%s: busy!\n", __func__
);
474 /* Initialize callbacks to be used by the IrDA stack */
475 irda_notify_init(¬ify
);
476 notify
.connect_confirm
= irda_connect_confirm
;
477 notify
.connect_indication
= irda_connect_indication
;
478 notify
.disconnect_indication
= irda_disconnect_indication
;
479 notify
.data_indication
= irda_data_indication
;
480 notify
.udata_indication
= irda_data_indication
;
481 notify
.flow_indication
= irda_flow_indication
;
482 notify
.instance
= self
;
483 strncpy(notify
.name
, name
, NOTIFY_MAX_NAME
);
485 self
->tsap
= irttp_open_tsap(tsap_sel
, DEFAULT_INITIAL_CREDIT
,
487 if (self
->tsap
== NULL
) {
488 IRDA_DEBUG(0, "%s(), Unable to allocate TSAP!\n",
492 /* Remember which TSAP selector we actually got */
493 self
->stsap_sel
= self
->tsap
->stsap_sel
;
499 * Function irda_open_lsap (self)
501 * Open local Link Service Access Point (LSAP). Used for opening Ultra
504 #ifdef CONFIG_IRDA_ULTRA
505 static int irda_open_lsap(struct irda_sock
*self
, int pid
)
510 IRDA_WARNING("%s(), busy!\n", __func__
);
514 /* Initialize callbacks to be used by the IrDA stack */
515 irda_notify_init(¬ify
);
516 notify
.udata_indication
= irda_data_indication
;
517 notify
.instance
= self
;
518 strncpy(notify
.name
, "Ultra", NOTIFY_MAX_NAME
);
520 self
->lsap
= irlmp_open_lsap(LSAP_CONNLESS
, ¬ify
, pid
);
521 if (self
->lsap
== NULL
) {
522 IRDA_DEBUG( 0, "%s(), Unable to allocate LSAP!\n", __func__
);
528 #endif /* CONFIG_IRDA_ULTRA */
531 * Function irda_find_lsap_sel (self, name)
533 * Try to lookup LSAP selector in remote LM-IAS
535 * Basically, we start a IAP query, and then go to sleep. When the query
536 * return, irda_getvalue_confirm will wake us up, and we can examine the
537 * result of the query...
538 * Note that in some case, the query fail even before we go to sleep,
539 * creating some races...
541 static int irda_find_lsap_sel(struct irda_sock
*self
, char *name
)
543 IRDA_DEBUG(2, "%s(%p, %s)\n", __func__
, self
, name
);
546 IRDA_WARNING("%s(): busy with a previous query\n",
551 self
->iriap
= iriap_open(LSAP_ANY
, IAS_CLIENT
, self
,
552 irda_getvalue_confirm
);
553 if(self
->iriap
== NULL
)
556 /* Treat unexpected wakeup as disconnect */
557 self
->errno
= -EHOSTUNREACH
;
559 /* Query remote LM-IAS */
560 iriap_getvaluebyclass_request(self
->iriap
, self
->saddr
, self
->daddr
,
561 name
, "IrDA:TinyTP:LsapSel");
563 /* Wait for answer, if not yet finished (or failed) */
564 if (wait_event_interruptible(self
->query_wait
, (self
->iriap
==NULL
)))
565 /* Treat signals as disconnect */
566 return -EHOSTUNREACH
;
568 /* Check what happened */
571 /* Requested object/attribute doesn't exist */
572 if((self
->errno
== IAS_CLASS_UNKNOWN
) ||
573 (self
->errno
== IAS_ATTRIB_UNKNOWN
))
574 return -EADDRNOTAVAIL
;
576 return -EHOSTUNREACH
;
579 /* Get the remote TSAP selector */
580 switch (self
->ias_result
->type
) {
582 IRDA_DEBUG(4, "%s() int=%d\n",
583 __func__
, self
->ias_result
->t
.integer
);
585 if (self
->ias_result
->t
.integer
!= -1)
586 self
->dtsap_sel
= self
->ias_result
->t
.integer
;
592 IRDA_DEBUG(0, "%s(), bad type!\n", __func__
);
595 if (self
->ias_result
)
596 irias_delete_value(self
->ias_result
);
601 return -EADDRNOTAVAIL
;
605 * Function irda_discover_daddr_and_lsap_sel (self, name)
607 * This try to find a device with the requested service.
609 * It basically look into the discovery log. For each address in the list,
610 * it queries the LM-IAS of the device to find if this device offer
611 * the requested service.
612 * If there is more than one node supporting the service, we complain
613 * to the user (it should move devices around).
614 * The, we set both the destination address and the lsap selector to point
615 * on the service on the unique device we have found.
617 * Note : this function fails if there is more than one device in range,
618 * because IrLMP doesn't disconnect the LAP when the last LSAP is closed.
619 * Moreover, we would need to wait the LAP disconnection...
621 static int irda_discover_daddr_and_lsap_sel(struct irda_sock
*self
, char *name
)
623 discinfo_t
*discoveries
; /* Copy of the discovery log */
624 int number
; /* Number of nodes in the log */
626 int err
= -ENETUNREACH
;
627 __u32 daddr
= DEV_ADDR_ANY
; /* Address we found the service on */
628 __u8 dtsap_sel
= 0x0; /* TSAP associated with it */
630 IRDA_DEBUG(2, "%s(), name=%s\n", __func__
, name
);
632 /* Ask lmp for the current discovery log
633 * Note : we have to use irlmp_get_discoveries(), as opposed
634 * to play with the cachelog directly, because while we are
635 * making our ias query, le log might change... */
636 discoveries
= irlmp_get_discoveries(&number
, self
->mask
.word
,
638 /* Check if the we got some results */
639 if (discoveries
== NULL
)
640 return -ENETUNREACH
; /* No nodes discovered */
643 * Now, check all discovered devices (if any), and connect
644 * client only about the services that the client is
647 for(i
= 0; i
< number
; i
++) {
648 /* Try the address in the log */
649 self
->daddr
= discoveries
[i
].daddr
;
651 IRDA_DEBUG(1, "%s(), trying daddr = %08x\n",
652 __func__
, self
->daddr
);
654 /* Query remote LM-IAS for this service */
655 err
= irda_find_lsap_sel(self
, name
);
658 /* We found the requested service */
659 if(daddr
!= DEV_ADDR_ANY
) {
660 IRDA_DEBUG(1, "%s(), discovered service ''%s'' in two different devices !!!\n",
662 self
->daddr
= DEV_ADDR_ANY
;
666 /* First time we found that one, save it ! */
668 dtsap_sel
= self
->dtsap_sel
;
671 /* Requested service simply doesn't exist on this node */
674 /* Something bad did happen :-( */
675 IRDA_DEBUG(0, "%s(), unexpected IAS query failure\n", __func__
);
676 self
->daddr
= DEV_ADDR_ANY
;
678 return -EHOSTUNREACH
;
682 /* Cleanup our copy of the discovery log */
685 /* Check out what we found */
686 if(daddr
== DEV_ADDR_ANY
) {
687 IRDA_DEBUG(1, "%s(), cannot discover service ''%s'' in any device !!!\n",
689 self
->daddr
= DEV_ADDR_ANY
;
690 return -EADDRNOTAVAIL
;
693 /* Revert back to discovered device & service */
696 self
->dtsap_sel
= dtsap_sel
;
698 IRDA_DEBUG(1, "%s(), discovered requested service ''%s'' at address %08x\n",
699 __func__
, name
, self
->daddr
);
705 * Function irda_getname (sock, uaddr, uaddr_len, peer)
707 * Return the our own, or peers socket address (sockaddr_irda)
710 static int irda_getname(struct socket
*sock
, struct sockaddr
*uaddr
,
711 int *uaddr_len
, int peer
)
713 struct sockaddr_irda saddr
;
714 struct sock
*sk
= sock
->sk
;
715 struct irda_sock
*self
= irda_sk(sk
);
717 memset(&saddr
, 0, sizeof(saddr
));
719 if (sk
->sk_state
!= TCP_ESTABLISHED
)
722 saddr
.sir_family
= AF_IRDA
;
723 saddr
.sir_lsap_sel
= self
->dtsap_sel
;
724 saddr
.sir_addr
= self
->daddr
;
726 saddr
.sir_family
= AF_IRDA
;
727 saddr
.sir_lsap_sel
= self
->stsap_sel
;
728 saddr
.sir_addr
= self
->saddr
;
731 IRDA_DEBUG(1, "%s(), tsap_sel = %#x\n", __func__
, saddr
.sir_lsap_sel
);
732 IRDA_DEBUG(1, "%s(), addr = %08x\n", __func__
, saddr
.sir_addr
);
734 /* uaddr_len come to us uninitialised */
735 *uaddr_len
= sizeof (struct sockaddr_irda
);
736 memcpy(uaddr
, &saddr
, *uaddr_len
);
742 * Function irda_listen (sock, backlog)
744 * Just move to the listen state
747 static int irda_listen(struct socket
*sock
, int backlog
)
749 struct sock
*sk
= sock
->sk
;
750 int err
= -EOPNOTSUPP
;
752 IRDA_DEBUG(2, "%s()\n", __func__
);
756 if ((sk
->sk_type
!= SOCK_STREAM
) && (sk
->sk_type
!= SOCK_SEQPACKET
) &&
757 (sk
->sk_type
!= SOCK_DGRAM
))
760 if (sk
->sk_state
!= TCP_LISTEN
) {
761 sk
->sk_max_ack_backlog
= backlog
;
762 sk
->sk_state
= TCP_LISTEN
;
773 * Function irda_bind (sock, uaddr, addr_len)
775 * Used by servers to register their well known TSAP
778 static int irda_bind(struct socket
*sock
, struct sockaddr
*uaddr
, int addr_len
)
780 struct sock
*sk
= sock
->sk
;
781 struct sockaddr_irda
*addr
= (struct sockaddr_irda
*) uaddr
;
782 struct irda_sock
*self
= irda_sk(sk
);
785 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
787 if (addr_len
!= sizeof(struct sockaddr_irda
))
791 #ifdef CONFIG_IRDA_ULTRA
792 /* Special care for Ultra sockets */
793 if ((sk
->sk_type
== SOCK_DGRAM
) &&
794 (sk
->sk_protocol
== IRDAPROTO_ULTRA
)) {
795 self
->pid
= addr
->sir_lsap_sel
;
797 if (self
->pid
& 0x80) {
798 IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __func__
);
801 err
= irda_open_lsap(self
, self
->pid
);
805 /* Pretend we are connected */
806 sock
->state
= SS_CONNECTED
;
807 sk
->sk_state
= TCP_ESTABLISHED
;
812 #endif /* CONFIG_IRDA_ULTRA */
814 self
->ias_obj
= irias_new_object(addr
->sir_name
, jiffies
);
816 if (self
->ias_obj
== NULL
)
819 err
= irda_open_tsap(self
, addr
->sir_lsap_sel
, addr
->sir_name
);
821 irias_delete_object(self
->ias_obj
);
822 self
->ias_obj
= NULL
;
826 /* Register with LM-IAS */
827 irias_add_integer_attrib(self
->ias_obj
, "IrDA:TinyTP:LsapSel",
828 self
->stsap_sel
, IAS_KERNEL_ATTR
);
829 irias_insert_object(self
->ias_obj
);
838 * Function irda_accept (sock, newsock, flags)
840 * Wait for incoming connection
843 static int irda_accept(struct socket
*sock
, struct socket
*newsock
, int flags
)
845 struct sock
*sk
= sock
->sk
;
846 struct irda_sock
*new, *self
= irda_sk(sk
);
851 IRDA_DEBUG(2, "%s()\n", __func__
);
853 err
= irda_create(sock_net(sk
), newsock
, sk
->sk_protocol
, 0);
860 if (sock
->state
!= SS_UNCONNECTED
)
863 if ((sk
= sock
->sk
) == NULL
)
867 if ((sk
->sk_type
!= SOCK_STREAM
) && (sk
->sk_type
!= SOCK_SEQPACKET
) &&
868 (sk
->sk_type
!= SOCK_DGRAM
))
872 if (sk
->sk_state
!= TCP_LISTEN
)
876 * The read queue this time is holding sockets ready to use
877 * hooked into the SABM we saved
881 * We can perform the accept only if there is incoming data
882 * on the listening socket.
883 * So, we will block the caller until we receive any data.
884 * If the caller was waiting on select() or poll() before
885 * calling us, the data is waiting for us ;-)
889 skb
= skb_dequeue(&sk
->sk_receive_queue
);
893 /* Non blocking operation */
895 if (flags
& O_NONBLOCK
)
898 err
= wait_event_interruptible(*(sk_sleep(sk
)),
899 skb_peek(&sk
->sk_receive_queue
));
909 newsk
->sk_state
= TCP_ESTABLISHED
;
911 new = irda_sk(newsk
);
913 /* Now attach up the new socket */
914 new->tsap
= irttp_dup(self
->tsap
, new);
915 err
= -EPERM
; /* value does not seem to make sense. -arnd */
917 IRDA_DEBUG(0, "%s(), dup failed!\n", __func__
);
922 new->stsap_sel
= new->tsap
->stsap_sel
;
923 new->dtsap_sel
= new->tsap
->dtsap_sel
;
924 new->saddr
= irttp_get_saddr(new->tsap
);
925 new->daddr
= irttp_get_daddr(new->tsap
);
927 new->max_sdu_size_tx
= self
->max_sdu_size_tx
;
928 new->max_sdu_size_rx
= self
->max_sdu_size_rx
;
929 new->max_data_size
= self
->max_data_size
;
930 new->max_header_size
= self
->max_header_size
;
932 memcpy(&new->qos_tx
, &self
->qos_tx
, sizeof(struct qos_info
));
934 /* Clean up the original one to keep it in listen state */
935 irttp_listen(self
->tsap
);
938 sk
->sk_ack_backlog
--;
940 newsock
->state
= SS_CONNECTED
;
942 irda_connect_response(new);
950 * Function irda_connect (sock, uaddr, addr_len, flags)
952 * Connect to a IrDA device
954 * The main difference with a "standard" connect is that with IrDA we need
955 * to resolve the service name into a TSAP selector (in TCP, port number
956 * doesn't have to be resolved).
957 * Because of this service name resolution, we can offer "auto-connect",
958 * where we connect to a service without specifying a destination address.
960 * Note : by consulting "errno", the user space caller may learn the cause
961 * of the failure. Most of them are visible in the function, others may come
962 * from subroutines called and are listed here :
963 * o EBUSY : already processing a connect
964 * o EHOSTUNREACH : bad addr->sir_addr argument
965 * o EADDRNOTAVAIL : bad addr->sir_name argument
966 * o ENOTUNIQ : more than one node has addr->sir_name (auto-connect)
967 * o ENETUNREACH : no node found on the network (auto-connect)
969 static int irda_connect(struct socket
*sock
, struct sockaddr
*uaddr
,
970 int addr_len
, int flags
)
972 struct sock
*sk
= sock
->sk
;
973 struct sockaddr_irda
*addr
= (struct sockaddr_irda
*) uaddr
;
974 struct irda_sock
*self
= irda_sk(sk
);
977 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
980 /* Don't allow connect for Ultra sockets */
981 err
= -ESOCKTNOSUPPORT
;
982 if ((sk
->sk_type
== SOCK_DGRAM
) && (sk
->sk_protocol
== IRDAPROTO_ULTRA
))
985 if (sk
->sk_state
== TCP_ESTABLISHED
&& sock
->state
== SS_CONNECTING
) {
986 sock
->state
= SS_CONNECTED
;
988 goto out
; /* Connect completed during a ERESTARTSYS event */
991 if (sk
->sk_state
== TCP_CLOSE
&& sock
->state
== SS_CONNECTING
) {
992 sock
->state
= SS_UNCONNECTED
;
997 err
= -EISCONN
; /* No reconnect on a seqpacket socket */
998 if (sk
->sk_state
== TCP_ESTABLISHED
)
1001 sk
->sk_state
= TCP_CLOSE
;
1002 sock
->state
= SS_UNCONNECTED
;
1005 if (addr_len
!= sizeof(struct sockaddr_irda
))
1008 /* Check if user supplied any destination device address */
1009 if ((!addr
->sir_addr
) || (addr
->sir_addr
== DEV_ADDR_ANY
)) {
1010 /* Try to find one suitable */
1011 err
= irda_discover_daddr_and_lsap_sel(self
, addr
->sir_name
);
1013 IRDA_DEBUG(0, "%s(), auto-connect failed!\n", __func__
);
1017 /* Use the one provided by the user */
1018 self
->daddr
= addr
->sir_addr
;
1019 IRDA_DEBUG(1, "%s(), daddr = %08x\n", __func__
, self
->daddr
);
1021 /* If we don't have a valid service name, we assume the
1022 * user want to connect on a specific LSAP. Prevent
1023 * the use of invalid LSAPs (IrLMP 1.1 p10). Jean II */
1024 if((addr
->sir_name
[0] != '\0') ||
1025 (addr
->sir_lsap_sel
>= 0x70)) {
1026 /* Query remote LM-IAS using service name */
1027 err
= irda_find_lsap_sel(self
, addr
->sir_name
);
1029 IRDA_DEBUG(0, "%s(), connect failed!\n", __func__
);
1033 /* Directly connect to the remote LSAP
1034 * specified by the sir_lsap field.
1035 * Please use with caution, in IrDA LSAPs are
1036 * dynamic and there is no "well-known" LSAP. */
1037 self
->dtsap_sel
= addr
->sir_lsap_sel
;
1041 /* Check if we have opened a local TSAP */
1043 err
= irda_open_tsap(self
, LSAP_ANY
, addr
->sir_name
);
1048 /* Move to connecting socket, start sending Connect Requests */
1049 sock
->state
= SS_CONNECTING
;
1050 sk
->sk_state
= TCP_SYN_SENT
;
1052 /* Connect to remote device */
1053 err
= irttp_connect_request(self
->tsap
, self
->dtsap_sel
,
1054 self
->saddr
, self
->daddr
, NULL
,
1055 self
->max_sdu_size_rx
, NULL
);
1057 IRDA_DEBUG(0, "%s(), connect failed!\n", __func__
);
1063 if (sk
->sk_state
!= TCP_ESTABLISHED
&& (flags
& O_NONBLOCK
))
1067 if (wait_event_interruptible(*(sk_sleep(sk
)),
1068 (sk
->sk_state
!= TCP_SYN_SENT
)))
1071 if (sk
->sk_state
!= TCP_ESTABLISHED
) {
1072 sock
->state
= SS_UNCONNECTED
;
1073 if (sk
->sk_prot
->disconnect(sk
, flags
))
1074 sock
->state
= SS_DISCONNECTING
;
1075 err
= sock_error(sk
);
1081 sock
->state
= SS_CONNECTED
;
1083 /* At this point, IrLMP has assigned our source address */
1084 self
->saddr
= irttp_get_saddr(self
->tsap
);
1091 static struct proto irda_proto
= {
1093 .owner
= THIS_MODULE
,
1094 .obj_size
= sizeof(struct irda_sock
),
1098 * Function irda_create (sock, protocol)
1100 * Create IrDA socket
1103 static int irda_create(struct net
*net
, struct socket
*sock
, int protocol
,
1107 struct irda_sock
*self
;
1109 IRDA_DEBUG(2, "%s()\n", __func__
);
1111 if (protocol
< 0 || protocol
> SK_PROTOCOL_MAX
)
1114 if (net
!= &init_net
)
1115 return -EAFNOSUPPORT
;
1117 /* Check for valid socket type */
1118 switch (sock
->type
) {
1119 case SOCK_STREAM
: /* For TTP connections with SAR disabled */
1120 case SOCK_SEQPACKET
: /* For TTP connections with SAR enabled */
1121 case SOCK_DGRAM
: /* For TTP Unitdata or LMP Ultra transfers */
1124 return -ESOCKTNOSUPPORT
;
1127 /* Allocate networking socket */
1128 sk
= sk_alloc(net
, PF_IRDA
, GFP_KERNEL
, &irda_proto
);
1133 IRDA_DEBUG(2, "%s() : self is %p\n", __func__
, self
);
1135 init_waitqueue_head(&self
->query_wait
);
1137 switch (sock
->type
) {
1139 sock
->ops
= &irda_stream_ops
;
1140 self
->max_sdu_size_rx
= TTP_SAR_DISABLE
;
1142 case SOCK_SEQPACKET
:
1143 sock
->ops
= &irda_seqpacket_ops
;
1144 self
->max_sdu_size_rx
= TTP_SAR_UNBOUND
;
1148 #ifdef CONFIG_IRDA_ULTRA
1149 case IRDAPROTO_ULTRA
:
1150 sock
->ops
= &irda_ultra_ops
;
1151 /* Initialise now, because we may send on unbound
1152 * sockets. Jean II */
1153 self
->max_data_size
= ULTRA_MAX_DATA
- LMP_PID_HEADER
;
1154 self
->max_header_size
= IRDA_MAX_HEADER
+ LMP_PID_HEADER
;
1156 #endif /* CONFIG_IRDA_ULTRA */
1157 case IRDAPROTO_UNITDATA
:
1158 sock
->ops
= &irda_dgram_ops
;
1159 /* We let Unitdata conn. be like seqpack conn. */
1160 self
->max_sdu_size_rx
= TTP_SAR_UNBOUND
;
1164 return -ESOCKTNOSUPPORT
;
1169 return -ESOCKTNOSUPPORT
;
1172 /* Initialise networking socket struct */
1173 sock_init_data(sock
, sk
); /* Note : set sk->sk_refcnt to 1 */
1174 sk
->sk_family
= PF_IRDA
;
1175 sk
->sk_protocol
= protocol
;
1177 /* Register as a client with IrLMP */
1178 self
->ckey
= irlmp_register_client(0, NULL
, NULL
, NULL
);
1179 self
->mask
.word
= 0xffff;
1180 self
->rx_flow
= self
->tx_flow
= FLOW_START
;
1181 self
->nslots
= DISCOVERY_DEFAULT_SLOTS
;
1182 self
->daddr
= DEV_ADDR_ANY
; /* Until we get connected */
1183 self
->saddr
= 0x0; /* so IrLMP assign us any link */
1188 * Function irda_destroy_socket (self)
1193 static void irda_destroy_socket(struct irda_sock
*self
)
1195 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
1197 /* Unregister with IrLMP */
1198 irlmp_unregister_client(self
->ckey
);
1199 irlmp_unregister_service(self
->skey
);
1201 /* Unregister with LM-IAS */
1202 if (self
->ias_obj
) {
1203 irias_delete_object(self
->ias_obj
);
1204 self
->ias_obj
= NULL
;
1208 iriap_close(self
->iriap
);
1213 irttp_disconnect_request(self
->tsap
, NULL
, P_NORMAL
);
1214 irttp_close_tsap(self
->tsap
);
1217 #ifdef CONFIG_IRDA_ULTRA
1219 irlmp_close_lsap(self
->lsap
);
1222 #endif /* CONFIG_IRDA_ULTRA */
1226 * Function irda_release (sock)
1228 static int irda_release(struct socket
*sock
)
1230 struct sock
*sk
= sock
->sk
;
1232 IRDA_DEBUG(2, "%s()\n", __func__
);
1238 sk
->sk_state
= TCP_CLOSE
;
1239 sk
->sk_shutdown
|= SEND_SHUTDOWN
;
1240 sk
->sk_state_change(sk
);
1242 /* Destroy IrDA socket */
1243 irda_destroy_socket(irda_sk(sk
));
1249 /* Purge queues (see sock_init_data()) */
1250 skb_queue_purge(&sk
->sk_receive_queue
);
1252 /* Destroy networking socket if we are the last reference on it,
1253 * i.e. if(sk->sk_refcnt == 0) -> sk_free(sk) */
1256 /* Notes on socket locking and deallocation... - Jean II
1257 * In theory we should put pairs of sock_hold() / sock_put() to
1258 * prevent the socket to be destroyed whenever there is an
1259 * outstanding request or outstanding incoming packet or event.
1261 * 1) This may include IAS request, both in connect and getsockopt.
1262 * Unfortunately, the situation is a bit more messy than it looks,
1263 * because we close iriap and kfree(self) above.
1265 * 2) This may include selective discovery in getsockopt.
1266 * Same stuff as above, irlmp registration and self are gone.
1268 * Probably 1 and 2 may not matter, because it's all triggered
1269 * by a process and the socket layer already prevent the
1270 * socket to go away while a process is holding it, through
1271 * sockfd_put() and fput()...
1273 * 3) This may include deferred TSAP closure. In particular,
1274 * we may receive a late irda_disconnect_indication()
1275 * Fortunately, (tsap_cb *)->close_pend should protect us
1278 * I did some testing on SMP, and it looks solid. And the socket
1279 * memory leak is now gone... - Jean II
1286 * Function irda_sendmsg (iocb, sock, msg, len)
1288 * Send message down to TinyTP. This function is used for both STREAM and
1289 * SEQPACK services. This is possible since it forces the client to
1290 * fragment the message if necessary
1292 static int irda_sendmsg(struct kiocb
*iocb
, struct socket
*sock
,
1293 struct msghdr
*msg
, size_t len
)
1295 struct sock
*sk
= sock
->sk
;
1296 struct irda_sock
*self
;
1297 struct sk_buff
*skb
;
1300 IRDA_DEBUG(4, "%s(), len=%zd\n", __func__
, len
);
1302 /* Note : socket.c set MSG_EOR on SEQPACKET sockets */
1303 if (msg
->msg_flags
& ~(MSG_DONTWAIT
| MSG_EOR
| MSG_CMSG_COMPAT
|
1310 if (sk
->sk_shutdown
& SEND_SHUTDOWN
)
1313 if (sk
->sk_state
!= TCP_ESTABLISHED
) {
1320 /* Check if IrTTP is wants us to slow down */
1322 if (wait_event_interruptible(*(sk_sleep(sk
)),
1323 (self
->tx_flow
!= FLOW_STOP
|| sk
->sk_state
!= TCP_ESTABLISHED
))) {
1328 /* Check if we are still connected */
1329 if (sk
->sk_state
!= TCP_ESTABLISHED
) {
1334 /* Check that we don't send out too big frames */
1335 if (len
> self
->max_data_size
) {
1336 IRDA_DEBUG(2, "%s(), Chopping frame from %zd to %d bytes!\n",
1337 __func__
, len
, self
->max_data_size
);
1338 len
= self
->max_data_size
;
1341 skb
= sock_alloc_send_skb(sk
, len
+ self
->max_header_size
+ 16,
1342 msg
->msg_flags
& MSG_DONTWAIT
, &err
);
1346 skb_reserve(skb
, self
->max_header_size
+ 16);
1347 skb_reset_transport_header(skb
);
1349 err
= memcpy_fromiovec(skb_transport_header(skb
), msg
->msg_iov
, len
);
1356 * Just send the message to TinyTP, and let it deal with possible
1357 * errors. No need to duplicate all that here
1359 err
= irttp_data_request(self
->tsap
, skb
);
1361 IRDA_DEBUG(0, "%s(), err=%d\n", __func__
, err
);
1366 /* Tell client how much data we actually sent */
1370 err
= sk_stream_error(sk
, msg
->msg_flags
, err
);
1378 * Function irda_recvmsg_dgram (iocb, sock, msg, size, flags)
1380 * Try to receive message and copy it to user. The frame is discarded
1381 * after being read, regardless of how much the user actually read
1383 static int irda_recvmsg_dgram(struct kiocb
*iocb
, struct socket
*sock
,
1384 struct msghdr
*msg
, size_t size
, int flags
)
1386 struct sock
*sk
= sock
->sk
;
1387 struct irda_sock
*self
= irda_sk(sk
);
1388 struct sk_buff
*skb
;
1392 IRDA_DEBUG(4, "%s()\n", __func__
);
1394 skb
= skb_recv_datagram(sk
, flags
& ~MSG_DONTWAIT
,
1395 flags
& MSG_DONTWAIT
, &err
);
1399 skb_reset_transport_header(skb
);
1402 if (copied
> size
) {
1403 IRDA_DEBUG(2, "%s(), Received truncated frame (%zd < %zd)!\n",
1404 __func__
, copied
, size
);
1406 msg
->msg_flags
|= MSG_TRUNC
;
1408 skb_copy_datagram_iovec(skb
, 0, msg
->msg_iov
, copied
);
1410 skb_free_datagram(sk
, skb
);
1413 * Check if we have previously stopped IrTTP and we know
1414 * have more free space in our rx_queue. If so tell IrTTP
1415 * to start delivering frames again before our rx_queue gets
1418 if (self
->rx_flow
== FLOW_STOP
) {
1419 if ((atomic_read(&sk
->sk_rmem_alloc
) << 2) <= sk
->sk_rcvbuf
) {
1420 IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __func__
);
1421 self
->rx_flow
= FLOW_START
;
1422 irttp_flow_request(self
->tsap
, FLOW_START
);
1430 * Function irda_recvmsg_stream (iocb, sock, msg, size, flags)
1432 static int irda_recvmsg_stream(struct kiocb
*iocb
, struct socket
*sock
,
1433 struct msghdr
*msg
, size_t size
, int flags
)
1435 struct sock
*sk
= sock
->sk
;
1436 struct irda_sock
*self
= irda_sk(sk
);
1437 int noblock
= flags
& MSG_DONTWAIT
;
1442 IRDA_DEBUG(3, "%s()\n", __func__
);
1444 if ((err
= sock_error(sk
)) < 0)
1447 if (sock
->flags
& __SO_ACCEPTCON
)
1451 if (flags
& MSG_OOB
)
1455 target
= sock_rcvlowat(sk
, flags
& MSG_WAITALL
, size
);
1456 timeo
= sock_rcvtimeo(sk
, noblock
);
1460 struct sk_buff
*skb
= skb_dequeue(&sk
->sk_receive_queue
);
1466 if (copied
>= target
)
1469 prepare_to_wait_exclusive(sk_sleep(sk
), &wait
, TASK_INTERRUPTIBLE
);
1472 * POSIX 1003.1g mandates this order.
1474 err
= sock_error(sk
);
1477 else if (sk
->sk_shutdown
& RCV_SHUTDOWN
)
1481 else if (signal_pending(current
))
1482 err
= sock_intr_errno(timeo
);
1483 else if (sk
->sk_state
!= TCP_ESTABLISHED
)
1485 else if (skb_peek(&sk
->sk_receive_queue
) == NULL
)
1486 /* Wait process until data arrives */
1489 finish_wait(sk_sleep(sk
), &wait
);
1493 if (sk
->sk_shutdown
& RCV_SHUTDOWN
)
1499 chunk
= min_t(unsigned int, skb
->len
, size
);
1500 if (memcpy_toiovec(msg
->msg_iov
, skb
->data
, chunk
)) {
1501 skb_queue_head(&sk
->sk_receive_queue
, skb
);
1509 /* Mark read part of skb as used */
1510 if (!(flags
& MSG_PEEK
)) {
1511 skb_pull(skb
, chunk
);
1513 /* put the skb back if we didn't use it up.. */
1515 IRDA_DEBUG(1, "%s(), back on q!\n",
1517 skb_queue_head(&sk
->sk_receive_queue
, skb
);
1523 IRDA_DEBUG(0, "%s() questionable!?\n", __func__
);
1525 /* put message back and return */
1526 skb_queue_head(&sk
->sk_receive_queue
, skb
);
1532 * Check if we have previously stopped IrTTP and we know
1533 * have more free space in our rx_queue. If so tell IrTTP
1534 * to start delivering frames again before our rx_queue gets
1537 if (self
->rx_flow
== FLOW_STOP
) {
1538 if ((atomic_read(&sk
->sk_rmem_alloc
) << 2) <= sk
->sk_rcvbuf
) {
1539 IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __func__
);
1540 self
->rx_flow
= FLOW_START
;
1541 irttp_flow_request(self
->tsap
, FLOW_START
);
1549 * Function irda_sendmsg_dgram (iocb, sock, msg, len)
1551 * Send message down to TinyTP for the unreliable sequenced
1555 static int irda_sendmsg_dgram(struct kiocb
*iocb
, struct socket
*sock
,
1556 struct msghdr
*msg
, size_t len
)
1558 struct sock
*sk
= sock
->sk
;
1559 struct irda_sock
*self
;
1560 struct sk_buff
*skb
;
1563 IRDA_DEBUG(4, "%s(), len=%zd\n", __func__
, len
);
1565 if (msg
->msg_flags
& ~(MSG_DONTWAIT
|MSG_CMSG_COMPAT
))
1570 if (sk
->sk_shutdown
& SEND_SHUTDOWN
) {
1571 send_sig(SIGPIPE
, current
, 0);
1577 if (sk
->sk_state
!= TCP_ESTABLISHED
)
1583 * Check that we don't send out too big frames. This is an unreliable
1584 * service, so we have no fragmentation and no coalescence
1586 if (len
> self
->max_data_size
) {
1587 IRDA_DEBUG(0, "%s(), Warning to much data! "
1588 "Chopping frame from %zd to %d bytes!\n",
1589 __func__
, len
, self
->max_data_size
);
1590 len
= self
->max_data_size
;
1593 skb
= sock_alloc_send_skb(sk
, len
+ self
->max_header_size
,
1594 msg
->msg_flags
& MSG_DONTWAIT
, &err
);
1599 skb_reserve(skb
, self
->max_header_size
);
1600 skb_reset_transport_header(skb
);
1602 IRDA_DEBUG(4, "%s(), appending user data\n", __func__
);
1604 err
= memcpy_fromiovec(skb_transport_header(skb
), msg
->msg_iov
, len
);
1611 * Just send the message to TinyTP, and let it deal with possible
1612 * errors. No need to duplicate all that here
1614 err
= irttp_udata_request(self
->tsap
, skb
);
1616 IRDA_DEBUG(0, "%s(), err=%d\n", __func__
, err
);
1629 * Function irda_sendmsg_ultra (iocb, sock, msg, len)
1631 * Send message down to IrLMP for the unreliable Ultra
1634 #ifdef CONFIG_IRDA_ULTRA
1635 static int irda_sendmsg_ultra(struct kiocb
*iocb
, struct socket
*sock
,
1636 struct msghdr
*msg
, size_t len
)
1638 struct sock
*sk
= sock
->sk
;
1639 struct irda_sock
*self
;
1642 struct sk_buff
*skb
;
1645 IRDA_DEBUG(4, "%s(), len=%zd\n", __func__
, len
);
1648 if (msg
->msg_flags
& ~(MSG_DONTWAIT
|MSG_CMSG_COMPAT
))
1654 if (sk
->sk_shutdown
& SEND_SHUTDOWN
) {
1655 send_sig(SIGPIPE
, current
, 0);
1661 /* Check if an address was specified with sendto. Jean II */
1662 if (msg
->msg_name
) {
1663 struct sockaddr_irda
*addr
= (struct sockaddr_irda
*) msg
->msg_name
;
1665 /* Check address, extract pid. Jean II */
1666 if (msg
->msg_namelen
< sizeof(*addr
))
1668 if (addr
->sir_family
!= AF_IRDA
)
1671 pid
= addr
->sir_lsap_sel
;
1673 IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __func__
);
1678 /* Check that the socket is properly bound to an Ultra
1680 if ((self
->lsap
== NULL
) ||
1681 (sk
->sk_state
!= TCP_ESTABLISHED
)) {
1682 IRDA_DEBUG(0, "%s(), socket not bound to Ultra PID.\n",
1687 /* Use PID from socket */
1692 * Check that we don't send out too big frames. This is an unreliable
1693 * service, so we have no fragmentation and no coalescence
1695 if (len
> self
->max_data_size
) {
1696 IRDA_DEBUG(0, "%s(), Warning to much data! "
1697 "Chopping frame from %zd to %d bytes!\n",
1698 __func__
, len
, self
->max_data_size
);
1699 len
= self
->max_data_size
;
1702 skb
= sock_alloc_send_skb(sk
, len
+ self
->max_header_size
,
1703 msg
->msg_flags
& MSG_DONTWAIT
, &err
);
1708 skb_reserve(skb
, self
->max_header_size
);
1709 skb_reset_transport_header(skb
);
1711 IRDA_DEBUG(4, "%s(), appending user data\n", __func__
);
1713 err
= memcpy_fromiovec(skb_transport_header(skb
), msg
->msg_iov
, len
);
1719 err
= irlmp_connless_data_request((bound
? self
->lsap
: NULL
),
1722 IRDA_DEBUG(0, "%s(), err=%d\n", __func__
, err
);
1727 #endif /* CONFIG_IRDA_ULTRA */
1730 * Function irda_shutdown (sk, how)
1732 static int irda_shutdown(struct socket
*sock
, int how
)
1734 struct sock
*sk
= sock
->sk
;
1735 struct irda_sock
*self
= irda_sk(sk
);
1737 IRDA_DEBUG(1, "%s(%p)\n", __func__
, self
);
1741 sk
->sk_state
= TCP_CLOSE
;
1742 sk
->sk_shutdown
|= SEND_SHUTDOWN
;
1743 sk
->sk_state_change(sk
);
1746 iriap_close(self
->iriap
);
1751 irttp_disconnect_request(self
->tsap
, NULL
, P_NORMAL
);
1752 irttp_close_tsap(self
->tsap
);
1756 /* A few cleanup so the socket look as good as new... */
1757 self
->rx_flow
= self
->tx_flow
= FLOW_START
; /* needed ??? */
1758 self
->daddr
= DEV_ADDR_ANY
; /* Until we get re-connected */
1759 self
->saddr
= 0x0; /* so IrLMP assign us any link */
1767 * Function irda_poll (file, sock, wait)
1769 static unsigned int irda_poll(struct file
* file
, struct socket
*sock
,
1772 struct sock
*sk
= sock
->sk
;
1773 struct irda_sock
*self
= irda_sk(sk
);
1776 IRDA_DEBUG(4, "%s()\n", __func__
);
1778 poll_wait(file
, sk_sleep(sk
), wait
);
1781 /* Exceptional events? */
1784 if (sk
->sk_shutdown
& RCV_SHUTDOWN
) {
1785 IRDA_DEBUG(0, "%s(), POLLHUP\n", __func__
);
1790 if (!skb_queue_empty(&sk
->sk_receive_queue
)) {
1791 IRDA_DEBUG(4, "Socket is readable\n");
1792 mask
|= POLLIN
| POLLRDNORM
;
1795 /* Connection-based need to check for termination and startup */
1796 switch (sk
->sk_type
) {
1798 if (sk
->sk_state
== TCP_CLOSE
) {
1799 IRDA_DEBUG(0, "%s(), POLLHUP\n", __func__
);
1803 if (sk
->sk_state
== TCP_ESTABLISHED
) {
1804 if ((self
->tx_flow
== FLOW_START
) &&
1807 mask
|= POLLOUT
| POLLWRNORM
| POLLWRBAND
;
1811 case SOCK_SEQPACKET
:
1812 if ((self
->tx_flow
== FLOW_START
) &&
1815 mask
|= POLLOUT
| POLLWRNORM
| POLLWRBAND
;
1819 if (sock_writeable(sk
))
1820 mask
|= POLLOUT
| POLLWRNORM
| POLLWRBAND
;
1830 * Function irda_ioctl (sock, cmd, arg)
1832 static int irda_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
)
1834 struct sock
*sk
= sock
->sk
;
1837 IRDA_DEBUG(4, "%s(), cmd=%#x\n", __func__
, cmd
);
1844 amount
= sk
->sk_sndbuf
- sk_wmem_alloc_get(sk
);
1847 err
= put_user(amount
, (unsigned int __user
*)arg
);
1852 struct sk_buff
*skb
;
1854 /* These two are safe on a single CPU system as only user tasks fiddle here */
1855 if ((skb
= skb_peek(&sk
->sk_receive_queue
)) != NULL
)
1857 err
= put_user(amount
, (unsigned int __user
*)arg
);
1863 err
= sock_get_timestamp(sk
, (struct timeval __user
*)arg
);
1868 case SIOCGIFDSTADDR
:
1869 case SIOCSIFDSTADDR
:
1870 case SIOCGIFBRDADDR
:
1871 case SIOCSIFBRDADDR
:
1872 case SIOCGIFNETMASK
:
1873 case SIOCSIFNETMASK
:
1878 IRDA_DEBUG(1, "%s(), doing device ioctl!\n", __func__
);
1885 #ifdef CONFIG_COMPAT
1887 * Function irda_ioctl (sock, cmd, arg)
1889 static int irda_compat_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
)
1892 * All IRDA's ioctl are standard ones.
1894 return -ENOIOCTLCMD
;
1899 * Function irda_setsockopt (sock, level, optname, optval, optlen)
1901 * Set some options for the socket
1904 static int irda_setsockopt(struct socket
*sock
, int level
, int optname
,
1905 char __user
*optval
, unsigned int optlen
)
1907 struct sock
*sk
= sock
->sk
;
1908 struct irda_sock
*self
= irda_sk(sk
);
1909 struct irda_ias_set
*ias_opt
;
1910 struct ias_object
*ias_obj
;
1911 struct ias_attrib
* ias_attr
; /* Attribute in IAS object */
1912 int opt
, free_ias
= 0, err
= 0;
1914 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
1916 if (level
!= SOL_IRLMP
)
1917 return -ENOPROTOOPT
;
1923 /* The user want to add an attribute to an existing IAS object
1924 * (in the IAS database) or to create a new object with this
1926 * We first query IAS to know if the object exist, and then
1927 * create the right attribute...
1930 if (optlen
!= sizeof(struct irda_ias_set
)) {
1935 ias_opt
= kmalloc(sizeof(struct irda_ias_set
), GFP_ATOMIC
);
1936 if (ias_opt
== NULL
) {
1941 /* Copy query to the driver. */
1942 if (copy_from_user(ias_opt
, optval
, optlen
)) {
1948 /* Find the object we target.
1949 * If the user gives us an empty string, we use the object
1950 * associated with this socket. This will workaround
1951 * duplicated class name - Jean II */
1952 if(ias_opt
->irda_class_name
[0] == '\0') {
1953 if(self
->ias_obj
== NULL
) {
1958 ias_obj
= self
->ias_obj
;
1960 ias_obj
= irias_find_object(ias_opt
->irda_class_name
);
1962 /* Only ROOT can mess with the global IAS database.
1963 * Users can only add attributes to the object associated
1964 * with the socket they own - Jean II */
1965 if((!capable(CAP_NET_ADMIN
)) &&
1966 ((ias_obj
== NULL
) || (ias_obj
!= self
->ias_obj
))) {
1972 /* If the object doesn't exist, create it */
1973 if(ias_obj
== (struct ias_object
*) NULL
) {
1974 /* Create a new object */
1975 ias_obj
= irias_new_object(ias_opt
->irda_class_name
,
1977 if (ias_obj
== NULL
) {
1985 /* Do we have the attribute already ? */
1986 if(irias_find_attrib(ias_obj
, ias_opt
->irda_attrib_name
)) {
1989 kfree(ias_obj
->name
);
1996 /* Look at the type */
1997 switch(ias_opt
->irda_attrib_type
) {
1999 /* Add an integer attribute */
2000 irias_add_integer_attrib(
2002 ias_opt
->irda_attrib_name
,
2003 ias_opt
->attribute
.irda_attrib_int
,
2008 if(ias_opt
->attribute
.irda_attrib_octet_seq
.len
>
2009 IAS_MAX_OCTET_STRING
) {
2012 kfree(ias_obj
->name
);
2019 /* Add an octet sequence attribute */
2020 irias_add_octseq_attrib(
2022 ias_opt
->irda_attrib_name
,
2023 ias_opt
->attribute
.irda_attrib_octet_seq
.octet_seq
,
2024 ias_opt
->attribute
.irda_attrib_octet_seq
.len
,
2028 /* Should check charset & co */
2030 /* The length is encoded in a __u8, and
2031 * IAS_MAX_STRING == 256, so there is no way
2032 * userspace can pass us a string too large.
2034 /* NULL terminate the string (avoid troubles) */
2035 ias_opt
->attribute
.irda_attrib_string
.string
[ias_opt
->attribute
.irda_attrib_string
.len
] = '\0';
2036 /* Add a string attribute */
2037 irias_add_string_attrib(
2039 ias_opt
->irda_attrib_name
,
2040 ias_opt
->attribute
.irda_attrib_string
.string
,
2046 kfree(ias_obj
->name
);
2052 irias_insert_object(ias_obj
);
2056 /* The user want to delete an object from our local IAS
2057 * database. We just need to query the IAS, check is the
2058 * object is not owned by the kernel and delete it.
2061 if (optlen
!= sizeof(struct irda_ias_set
)) {
2066 ias_opt
= kmalloc(sizeof(struct irda_ias_set
), GFP_ATOMIC
);
2067 if (ias_opt
== NULL
) {
2072 /* Copy query to the driver. */
2073 if (copy_from_user(ias_opt
, optval
, optlen
)) {
2079 /* Find the object we target.
2080 * If the user gives us an empty string, we use the object
2081 * associated with this socket. This will workaround
2082 * duplicated class name - Jean II */
2083 if(ias_opt
->irda_class_name
[0] == '\0')
2084 ias_obj
= self
->ias_obj
;
2086 ias_obj
= irias_find_object(ias_opt
->irda_class_name
);
2087 if(ias_obj
== (struct ias_object
*) NULL
) {
2093 /* Only ROOT can mess with the global IAS database.
2094 * Users can only del attributes from the object associated
2095 * with the socket they own - Jean II */
2096 if((!capable(CAP_NET_ADMIN
)) &&
2097 ((ias_obj
== NULL
) || (ias_obj
!= self
->ias_obj
))) {
2103 /* Find the attribute (in the object) we target */
2104 ias_attr
= irias_find_attrib(ias_obj
,
2105 ias_opt
->irda_attrib_name
);
2106 if(ias_attr
== (struct ias_attrib
*) NULL
) {
2112 /* Check is the user space own the object */
2113 if(ias_attr
->value
->owner
!= IAS_USER_ATTR
) {
2114 IRDA_DEBUG(1, "%s(), attempting to delete a kernel attribute\n", __func__
);
2120 /* Remove the attribute (and maybe the object) */
2121 irias_delete_attrib(ias_obj
, ias_attr
, 1);
2124 case IRLMP_MAX_SDU_SIZE
:
2125 if (optlen
< sizeof(int)) {
2130 if (get_user(opt
, (int __user
*)optval
)) {
2135 /* Only possible for a seqpacket service (TTP with SAR) */
2136 if (sk
->sk_type
!= SOCK_SEQPACKET
) {
2137 IRDA_DEBUG(2, "%s(), setting max_sdu_size = %d\n",
2139 self
->max_sdu_size_rx
= opt
;
2141 IRDA_WARNING("%s: not allowed to set MAXSDUSIZE for this socket type!\n",
2147 case IRLMP_HINTS_SET
:
2148 if (optlen
< sizeof(int)) {
2153 /* The input is really a (__u8 hints[2]), easier as an int */
2154 if (get_user(opt
, (int __user
*)optval
)) {
2159 /* Unregister any old registration */
2161 irlmp_unregister_service(self
->skey
);
2163 self
->skey
= irlmp_register_service((__u16
) opt
);
2165 case IRLMP_HINT_MASK_SET
:
2166 /* As opposed to the previous case which set the hint bits
2167 * that we advertise, this one set the filter we use when
2168 * making a discovery (nodes which don't match any hint
2169 * bit in the mask are not reported).
2171 if (optlen
< sizeof(int)) {
2176 /* The input is really a (__u8 hints[2]), easier as an int */
2177 if (get_user(opt
, (int __user
*)optval
)) {
2182 /* Set the new hint mask */
2183 self
->mask
.word
= (__u16
) opt
;
2184 /* Mask out extension bits */
2185 self
->mask
.word
&= 0x7f7f;
2186 /* Check if no bits */
2187 if(!self
->mask
.word
)
2188 self
->mask
.word
= 0xFFFF;
2203 * Function irda_extract_ias_value(ias_opt, ias_value)
2205 * Translate internal IAS value structure to the user space representation
2207 * The external representation of IAS values, as we exchange them with
2208 * user space program is quite different from the internal representation,
2209 * as stored in the IAS database (because we need a flat structure for
2210 * crossing kernel boundary).
2211 * This function transform the former in the latter. We also check
2212 * that the value type is valid.
2214 static int irda_extract_ias_value(struct irda_ias_set
*ias_opt
,
2215 struct ias_value
*ias_value
)
2217 /* Look at the type */
2218 switch (ias_value
->type
) {
2220 /* Copy the integer */
2221 ias_opt
->attribute
.irda_attrib_int
= ias_value
->t
.integer
;
2225 ias_opt
->attribute
.irda_attrib_octet_seq
.len
= ias_value
->len
;
2227 memcpy(ias_opt
->attribute
.irda_attrib_octet_seq
.octet_seq
,
2228 ias_value
->t
.oct_seq
, ias_value
->len
);
2232 ias_opt
->attribute
.irda_attrib_string
.len
= ias_value
->len
;
2233 ias_opt
->attribute
.irda_attrib_string
.charset
= ias_value
->charset
;
2235 memcpy(ias_opt
->attribute
.irda_attrib_string
.string
,
2236 ias_value
->t
.string
, ias_value
->len
);
2237 /* NULL terminate the string (avoid troubles) */
2238 ias_opt
->attribute
.irda_attrib_string
.string
[ias_value
->len
] = '\0';
2245 /* Copy type over */
2246 ias_opt
->irda_attrib_type
= ias_value
->type
;
2252 * Function irda_getsockopt (sock, level, optname, optval, optlen)
2254 static int irda_getsockopt(struct socket
*sock
, int level
, int optname
,
2255 char __user
*optval
, int __user
*optlen
)
2257 struct sock
*sk
= sock
->sk
;
2258 struct irda_sock
*self
= irda_sk(sk
);
2259 struct irda_device_list list
;
2260 struct irda_device_info
*discoveries
;
2261 struct irda_ias_set
* ias_opt
; /* IAS get/query params */
2262 struct ias_object
* ias_obj
; /* Object in IAS */
2263 struct ias_attrib
* ias_attr
; /* Attribute in IAS object */
2264 int daddr
= DEV_ADDR_ANY
; /* Dest address for IAS queries */
2270 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
2272 if (level
!= SOL_IRLMP
)
2273 return -ENOPROTOOPT
;
2275 if (get_user(len
, optlen
))
2284 case IRLMP_ENUMDEVICES
:
2286 /* Offset to first device entry */
2287 offset
= sizeof(struct irda_device_list
) -
2288 sizeof(struct irda_device_info
);
2295 /* Ask lmp for the current discovery log */
2296 discoveries
= irlmp_get_discoveries(&list
.len
, self
->mask
.word
,
2298 /* Check if the we got some results */
2299 if (discoveries
== NULL
) {
2301 goto out
; /* Didn't find any devices */
2304 /* Write total list length back to client */
2305 if (copy_to_user(optval
, &list
, offset
))
2308 /* Copy the list itself - watch for overflow */
2309 if (list
.len
> 2048) {
2313 total
= offset
+ (list
.len
* sizeof(struct irda_device_info
));
2316 if (copy_to_user(optval
+offset
, discoveries
, total
- offset
))
2319 /* Write total number of bytes used back to client */
2320 if (put_user(total
, optlen
))
2323 /* Free up our buffer */
2326 case IRLMP_MAX_SDU_SIZE
:
2327 val
= self
->max_data_size
;
2329 if (put_user(len
, optlen
)) {
2334 if (copy_to_user(optval
, &val
, len
)) {
2341 /* The user want an object from our local IAS database.
2342 * We just need to query the IAS and return the value
2345 /* Check that the user has allocated the right space for us */
2346 if (len
!= sizeof(struct irda_ias_set
)) {
2351 ias_opt
= kmalloc(sizeof(struct irda_ias_set
), GFP_ATOMIC
);
2352 if (ias_opt
== NULL
) {
2357 /* Copy query to the driver. */
2358 if (copy_from_user(ias_opt
, optval
, len
)) {
2364 /* Find the object we target.
2365 * If the user gives us an empty string, we use the object
2366 * associated with this socket. This will workaround
2367 * duplicated class name - Jean II */
2368 if(ias_opt
->irda_class_name
[0] == '\0')
2369 ias_obj
= self
->ias_obj
;
2371 ias_obj
= irias_find_object(ias_opt
->irda_class_name
);
2372 if(ias_obj
== (struct ias_object
*) NULL
) {
2378 /* Find the attribute (in the object) we target */
2379 ias_attr
= irias_find_attrib(ias_obj
,
2380 ias_opt
->irda_attrib_name
);
2381 if(ias_attr
== (struct ias_attrib
*) NULL
) {
2387 /* Translate from internal to user structure */
2388 err
= irda_extract_ias_value(ias_opt
, ias_attr
->value
);
2394 /* Copy reply to the user */
2395 if (copy_to_user(optval
, ias_opt
,
2396 sizeof(struct irda_ias_set
))) {
2401 /* Note : don't need to put optlen, we checked it */
2404 case IRLMP_IAS_QUERY
:
2405 /* The user want an object from a remote IAS database.
2406 * We need to use IAP to query the remote database and
2407 * then wait for the answer to come back. */
2409 /* Check that the user has allocated the right space for us */
2410 if (len
!= sizeof(struct irda_ias_set
)) {
2415 ias_opt
= kmalloc(sizeof(struct irda_ias_set
), GFP_ATOMIC
);
2416 if (ias_opt
== NULL
) {
2421 /* Copy query to the driver. */
2422 if (copy_from_user(ias_opt
, optval
, len
)) {
2428 /* At this point, there are two cases...
2429 * 1) the socket is connected - that's the easy case, we
2430 * just query the device we are connected to...
2431 * 2) the socket is not connected - the user doesn't want
2432 * to connect and/or may not have a valid service name
2433 * (so can't create a fake connection). In this case,
2434 * we assume that the user pass us a valid destination
2435 * address in the requesting structure...
2437 if(self
->daddr
!= DEV_ADDR_ANY
) {
2438 /* We are connected - reuse known daddr */
2439 daddr
= self
->daddr
;
2441 /* We are not connected, we must specify a valid
2442 * destination address */
2443 daddr
= ias_opt
->daddr
;
2444 if((!daddr
) || (daddr
== DEV_ADDR_ANY
)) {
2451 /* Check that we can proceed with IAP */
2453 IRDA_WARNING("%s: busy with a previous query\n",
2460 self
->iriap
= iriap_open(LSAP_ANY
, IAS_CLIENT
, self
,
2461 irda_getvalue_confirm
);
2463 if (self
->iriap
== NULL
) {
2469 /* Treat unexpected wakeup as disconnect */
2470 self
->errno
= -EHOSTUNREACH
;
2472 /* Query remote LM-IAS */
2473 iriap_getvaluebyclass_request(self
->iriap
,
2475 ias_opt
->irda_class_name
,
2476 ias_opt
->irda_attrib_name
);
2478 /* Wait for answer, if not yet finished (or failed) */
2479 if (wait_event_interruptible(self
->query_wait
,
2480 (self
->iriap
== NULL
))) {
2481 /* pending request uses copy of ias_opt-content
2482 * we can free it regardless! */
2484 /* Treat signals as disconnect */
2485 err
= -EHOSTUNREACH
;
2489 /* Check what happened */
2493 /* Requested object/attribute doesn't exist */
2494 if((self
->errno
== IAS_CLASS_UNKNOWN
) ||
2495 (self
->errno
== IAS_ATTRIB_UNKNOWN
))
2496 err
= -EADDRNOTAVAIL
;
2498 err
= -EHOSTUNREACH
;
2503 /* Translate from internal to user structure */
2504 err
= irda_extract_ias_value(ias_opt
, self
->ias_result
);
2505 if (self
->ias_result
)
2506 irias_delete_value(self
->ias_result
);
2512 /* Copy reply to the user */
2513 if (copy_to_user(optval
, ias_opt
,
2514 sizeof(struct irda_ias_set
))) {
2519 /* Note : don't need to put optlen, we checked it */
2522 case IRLMP_WAITDEVICE
:
2523 /* This function is just another way of seeing life ;-)
2524 * IRLMP_ENUMDEVICES assumes that you have a static network,
2525 * and that you just want to pick one of the devices present.
2526 * On the other hand, in here we assume that no device is
2527 * present and that at some point in the future a device will
2528 * come into range. When this device arrive, we just wake
2529 * up the caller, so that he has time to connect to it before
2530 * the device goes away...
2531 * Note : once the node has been discovered for more than a
2532 * few second, it won't trigger this function, unless it
2533 * goes away and come back changes its hint bits (so we
2534 * might call it IRLMP_WAITNEWDEVICE).
2537 /* Check that the user is passing us an int */
2538 if (len
!= sizeof(int)) {
2542 /* Get timeout in ms (max time we block the caller) */
2543 if (get_user(val
, (int __user
*)optval
)) {
2548 /* Tell IrLMP we want to be notified */
2549 irlmp_update_client(self
->ckey
, self
->mask
.word
,
2550 irda_selective_discovery_indication
,
2551 NULL
, (void *) self
);
2553 /* Do some discovery (and also return cached results) */
2554 irlmp_discovery_request(self
->nslots
);
2556 /* Wait until a node is discovered */
2557 if (!self
->cachedaddr
) {
2558 IRDA_DEBUG(1, "%s(), nothing discovered yet, going to sleep...\n", __func__
);
2560 /* Set watchdog timer to expire in <val> ms. */
2562 setup_timer(&self
->watchdog
, irda_discovery_timeout
,
2563 (unsigned long)self
);
2564 mod_timer(&self
->watchdog
,
2565 jiffies
+ msecs_to_jiffies(val
));
2567 /* Wait for IR-LMP to call us back */
2568 __wait_event_interruptible(self
->query_wait
,
2569 (self
->cachedaddr
!= 0 || self
->errno
== -ETIME
),
2572 /* If watchdog is still activated, kill it! */
2573 del_timer(&(self
->watchdog
));
2575 IRDA_DEBUG(1, "%s(), ...waking up !\n", __func__
);
2581 IRDA_DEBUG(1, "%s(), found immediately !\n",
2584 /* Tell IrLMP that we have been notified */
2585 irlmp_update_client(self
->ckey
, self
->mask
.word
,
2588 /* Check if the we got some results */
2589 if (!self
->cachedaddr
) {
2590 err
= -EAGAIN
; /* Didn't find any devices */
2593 daddr
= self
->cachedaddr
;
2595 self
->cachedaddr
= 0;
2597 /* We return the daddr of the device that trigger the
2598 * wakeup. As irlmp pass us only the new devices, we
2599 * are sure that it's not an old device.
2600 * If the user want more details, he should query
2601 * the whole discovery log and pick one device...
2603 if (put_user(daddr
, (int __user
*)optval
)) {
2620 static const struct net_proto_family irda_family_ops
= {
2622 .create
= irda_create
,
2623 .owner
= THIS_MODULE
,
2626 static const struct proto_ops irda_stream_ops
= {
2628 .owner
= THIS_MODULE
,
2629 .release
= irda_release
,
2631 .connect
= irda_connect
,
2632 .socketpair
= sock_no_socketpair
,
2633 .accept
= irda_accept
,
2634 .getname
= irda_getname
,
2636 .ioctl
= irda_ioctl
,
2637 #ifdef CONFIG_COMPAT
2638 .compat_ioctl
= irda_compat_ioctl
,
2640 .listen
= irda_listen
,
2641 .shutdown
= irda_shutdown
,
2642 .setsockopt
= irda_setsockopt
,
2643 .getsockopt
= irda_getsockopt
,
2644 .sendmsg
= irda_sendmsg
,
2645 .recvmsg
= irda_recvmsg_stream
,
2646 .mmap
= sock_no_mmap
,
2647 .sendpage
= sock_no_sendpage
,
2650 static const struct proto_ops irda_seqpacket_ops
= {
2652 .owner
= THIS_MODULE
,
2653 .release
= irda_release
,
2655 .connect
= irda_connect
,
2656 .socketpair
= sock_no_socketpair
,
2657 .accept
= irda_accept
,
2658 .getname
= irda_getname
,
2659 .poll
= datagram_poll
,
2660 .ioctl
= irda_ioctl
,
2661 #ifdef CONFIG_COMPAT
2662 .compat_ioctl
= irda_compat_ioctl
,
2664 .listen
= irda_listen
,
2665 .shutdown
= irda_shutdown
,
2666 .setsockopt
= irda_setsockopt
,
2667 .getsockopt
= irda_getsockopt
,
2668 .sendmsg
= irda_sendmsg
,
2669 .recvmsg
= irda_recvmsg_dgram
,
2670 .mmap
= sock_no_mmap
,
2671 .sendpage
= sock_no_sendpage
,
2674 static const struct proto_ops irda_dgram_ops
= {
2676 .owner
= THIS_MODULE
,
2677 .release
= irda_release
,
2679 .connect
= irda_connect
,
2680 .socketpair
= sock_no_socketpair
,
2681 .accept
= irda_accept
,
2682 .getname
= irda_getname
,
2683 .poll
= datagram_poll
,
2684 .ioctl
= irda_ioctl
,
2685 #ifdef CONFIG_COMPAT
2686 .compat_ioctl
= irda_compat_ioctl
,
2688 .listen
= irda_listen
,
2689 .shutdown
= irda_shutdown
,
2690 .setsockopt
= irda_setsockopt
,
2691 .getsockopt
= irda_getsockopt
,
2692 .sendmsg
= irda_sendmsg_dgram
,
2693 .recvmsg
= irda_recvmsg_dgram
,
2694 .mmap
= sock_no_mmap
,
2695 .sendpage
= sock_no_sendpage
,
2698 #ifdef CONFIG_IRDA_ULTRA
2699 static const struct proto_ops irda_ultra_ops
= {
2701 .owner
= THIS_MODULE
,
2702 .release
= irda_release
,
2704 .connect
= sock_no_connect
,
2705 .socketpair
= sock_no_socketpair
,
2706 .accept
= sock_no_accept
,
2707 .getname
= irda_getname
,
2708 .poll
= datagram_poll
,
2709 .ioctl
= irda_ioctl
,
2710 #ifdef CONFIG_COMPAT
2711 .compat_ioctl
= irda_compat_ioctl
,
2713 .listen
= sock_no_listen
,
2714 .shutdown
= irda_shutdown
,
2715 .setsockopt
= irda_setsockopt
,
2716 .getsockopt
= irda_getsockopt
,
2717 .sendmsg
= irda_sendmsg_ultra
,
2718 .recvmsg
= irda_recvmsg_dgram
,
2719 .mmap
= sock_no_mmap
,
2720 .sendpage
= sock_no_sendpage
,
2722 #endif /* CONFIG_IRDA_ULTRA */
2725 * Function irsock_init (pro)
2727 * Initialize IrDA protocol
2730 int __init
irsock_init(void)
2732 int rc
= proto_register(&irda_proto
, 0);
2735 rc
= sock_register(&irda_family_ops
);
2741 * Function irsock_cleanup (void)
2743 * Remove IrDA protocol
2746 void irsock_cleanup(void)
2748 sock_unregister(PF_IRDA
);
2749 proto_unregister(&irda_proto
);