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/smp_lock.h>
49 #include <linux/socket.h>
50 #include <linux/sockios.h>
51 #include <linux/slab.h>
52 #include <linux/init.h>
53 #include <linux/net.h>
54 #include <linux/irda.h>
55 #include <linux/poll.h>
57 #include <asm/ioctls.h> /* TIOCOUTQ, TIOCINQ */
58 #include <asm/uaccess.h>
61 #include <net/tcp_states.h>
63 #include <net/irda/af_irda.h>
65 static int irda_create(struct net
*net
, struct socket
*sock
, int protocol
, int kern
);
67 static const struct proto_ops irda_stream_ops
;
68 static const struct proto_ops irda_seqpacket_ops
;
69 static const struct proto_ops irda_dgram_ops
;
71 #ifdef CONFIG_IRDA_ULTRA
72 static const struct proto_ops irda_ultra_ops
;
73 #define ULTRA_MAX_DATA 382
74 #endif /* CONFIG_IRDA_ULTRA */
76 #define IRDA_MAX_HEADER (TTP_MAX_HEADER)
79 * Function irda_data_indication (instance, sap, skb)
81 * Received some data from TinyTP. Just queue it on the receive queue
84 static int irda_data_indication(void *instance
, void *sap
, struct sk_buff
*skb
)
86 struct irda_sock
*self
;
90 IRDA_DEBUG(3, "%s()\n", __func__
);
95 err
= sock_queue_rcv_skb(sk
, skb
);
97 IRDA_DEBUG(1, "%s(), error: no more mem!\n", __func__
);
98 self
->rx_flow
= FLOW_STOP
;
100 /* When we return error, TTP will need to requeue the skb */
108 * Function irda_disconnect_indication (instance, sap, reason, skb)
110 * Connection has been closed. Check reason to find out why
113 static void irda_disconnect_indication(void *instance
, void *sap
,
114 LM_REASON reason
, struct sk_buff
*skb
)
116 struct irda_sock
*self
;
121 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
123 /* Don't care about it, but let's not leak it */
129 IRDA_DEBUG(0, "%s(%p) : BUG : sk is NULL\n",
134 /* Prevent race conditions with irda_release() and irda_shutdown() */
136 if (!sock_flag(sk
, SOCK_DEAD
) && sk
->sk_state
!= TCP_CLOSE
) {
137 sk
->sk_state
= TCP_CLOSE
;
138 sk
->sk_shutdown
|= SEND_SHUTDOWN
;
140 sk
->sk_state_change(sk
);
143 * If we leave it open, IrLMP put it back into the list of
144 * unconnected LSAPs. The problem is that any incoming request
145 * can then be matched to this socket (and it will be, because
146 * it is at the head of the list). This would prevent any
147 * listening socket waiting on the same TSAP to get those
148 * requests. Some apps forget to close sockets, or hang to it
149 * a bit too long, so we may stay in this dead state long
150 * enough to be noticed...
151 * Note : all socket function do check sk->sk_state, so we are
156 irttp_close_tsap(self
->tsap
);
162 /* Note : once we are there, there is not much you want to do
163 * with the socket anymore, apart from closing it.
164 * For example, bind() and connect() won't reset sk->sk_err,
165 * sk->sk_shutdown and sk->sk_flags to valid values...
171 * Function irda_connect_confirm (instance, sap, qos, max_sdu_size, skb)
173 * Connections has been confirmed by the remote device
176 static void irda_connect_confirm(void *instance
, void *sap
,
177 struct qos_info
*qos
,
178 __u32 max_sdu_size
, __u8 max_header_size
,
181 struct irda_sock
*self
;
186 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
195 // Should be ??? skb_queue_tail(&sk->sk_receive_queue, skb);
197 /* How much header space do we need to reserve */
198 self
->max_header_size
= max_header_size
;
200 /* IrTTP max SDU size in transmit direction */
201 self
->max_sdu_size_tx
= max_sdu_size
;
203 /* Find out what the largest chunk of data that we can transmit is */
204 switch (sk
->sk_type
) {
206 if (max_sdu_size
!= 0) {
207 IRDA_ERROR("%s: max_sdu_size must be 0\n",
211 self
->max_data_size
= irttp_get_max_seg_size(self
->tsap
);
214 if (max_sdu_size
== 0) {
215 IRDA_ERROR("%s: max_sdu_size cannot be 0\n",
219 self
->max_data_size
= max_sdu_size
;
222 self
->max_data_size
= irttp_get_max_seg_size(self
->tsap
);
225 IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __func__
,
226 self
->max_data_size
);
228 memcpy(&self
->qos_tx
, qos
, sizeof(struct qos_info
));
230 /* We are now connected! */
231 sk
->sk_state
= TCP_ESTABLISHED
;
232 sk
->sk_state_change(sk
);
236 * Function irda_connect_indication(instance, sap, qos, max_sdu_size, userdata)
238 * Incoming connection
241 static void irda_connect_indication(void *instance
, void *sap
,
242 struct qos_info
*qos
, __u32 max_sdu_size
,
243 __u8 max_header_size
, struct sk_buff
*skb
)
245 struct irda_sock
*self
;
250 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
258 /* How much header space do we need to reserve */
259 self
->max_header_size
= max_header_size
;
261 /* IrTTP max SDU size in transmit direction */
262 self
->max_sdu_size_tx
= max_sdu_size
;
264 /* Find out what the largest chunk of data that we can transmit is */
265 switch (sk
->sk_type
) {
267 if (max_sdu_size
!= 0) {
268 IRDA_ERROR("%s: max_sdu_size must be 0\n",
273 self
->max_data_size
= irttp_get_max_seg_size(self
->tsap
);
276 if (max_sdu_size
== 0) {
277 IRDA_ERROR("%s: max_sdu_size cannot be 0\n",
282 self
->max_data_size
= max_sdu_size
;
285 self
->max_data_size
= irttp_get_max_seg_size(self
->tsap
);
288 IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __func__
,
289 self
->max_data_size
);
291 memcpy(&self
->qos_tx
, qos
, sizeof(struct qos_info
));
293 skb_queue_tail(&sk
->sk_receive_queue
, skb
);
294 sk
->sk_state_change(sk
);
298 * Function irda_connect_response (handle)
300 * Accept incoming connection
303 static void irda_connect_response(struct irda_sock
*self
)
307 IRDA_DEBUG(2, "%s()\n", __func__
);
309 skb
= alloc_skb(TTP_MAX_HEADER
+ TTP_SAR_HEADER
,
312 IRDA_DEBUG(0, "%s() Unable to allocate sk_buff!\n",
317 /* Reserve space for MUX_CONTROL and LAP header */
318 skb_reserve(skb
, IRDA_MAX_HEADER
);
320 irttp_connect_response(self
->tsap
, self
->max_sdu_size_rx
, skb
);
324 * Function irda_flow_indication (instance, sap, flow)
326 * Used by TinyTP to tell us if it can accept more data or not
329 static void irda_flow_indication(void *instance
, void *sap
, LOCAL_FLOW flow
)
331 struct irda_sock
*self
;
334 IRDA_DEBUG(2, "%s()\n", __func__
);
342 IRDA_DEBUG(1, "%s(), IrTTP wants us to slow down\n",
344 self
->tx_flow
= flow
;
347 self
->tx_flow
= flow
;
348 IRDA_DEBUG(1, "%s(), IrTTP wants us to start again\n",
350 wake_up_interruptible(sk_sleep(sk
));
353 IRDA_DEBUG(0, "%s(), Unknown flow command!\n", __func__
);
354 /* Unknown flow command, better stop */
355 self
->tx_flow
= flow
;
361 * Function irda_getvalue_confirm (obj_id, value, priv)
363 * Got answer from remote LM-IAS, just pass object to requester...
365 * Note : duplicate from above, but we need our own version that
366 * doesn't touch the dtsap_sel and save the full value structure...
368 static void irda_getvalue_confirm(int result
, __u16 obj_id
,
369 struct ias_value
*value
, void *priv
)
371 struct irda_sock
*self
;
373 self
= (struct irda_sock
*) priv
;
375 IRDA_WARNING("%s: lost myself!\n", __func__
);
379 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
381 /* We probably don't need to make any more queries */
382 iriap_close(self
->iriap
);
385 /* Check if request succeeded */
386 if (result
!= IAS_SUCCESS
) {
387 IRDA_DEBUG(1, "%s(), IAS query failed! (%d)\n", __func__
,
390 self
->errno
= result
; /* We really need it later */
392 /* Wake up any processes waiting for result */
393 wake_up_interruptible(&self
->query_wait
);
398 /* Pass the object to the caller (so the caller must delete it) */
399 self
->ias_result
= value
;
402 /* Wake up any processes waiting for result */
403 wake_up_interruptible(&self
->query_wait
);
407 * Function irda_selective_discovery_indication (discovery)
409 * Got a selective discovery indication from IrLMP.
411 * IrLMP is telling us that this node is new and matching our hint bit
412 * filter. Wake up any process waiting for answer...
414 static void irda_selective_discovery_indication(discinfo_t
*discovery
,
418 struct irda_sock
*self
;
420 IRDA_DEBUG(2, "%s()\n", __func__
);
422 self
= (struct irda_sock
*) priv
;
424 IRDA_WARNING("%s: lost myself!\n", __func__
);
428 /* Pass parameter to the caller */
429 self
->cachedaddr
= discovery
->daddr
;
431 /* Wake up process if its waiting for device to be discovered */
432 wake_up_interruptible(&self
->query_wait
);
436 * Function irda_discovery_timeout (priv)
438 * Timeout in the selective discovery process
440 * We were waiting for a node to be discovered, but nothing has come up
441 * so far. Wake up the user and tell him that we failed...
443 static void irda_discovery_timeout(u_long priv
)
445 struct irda_sock
*self
;
447 IRDA_DEBUG(2, "%s()\n", __func__
);
449 self
= (struct irda_sock
*) priv
;
450 BUG_ON(self
== NULL
);
452 /* Nothing for the caller */
453 self
->cachelog
= NULL
;
454 self
->cachedaddr
= 0;
455 self
->errno
= -ETIME
;
457 /* Wake up process if its still waiting... */
458 wake_up_interruptible(&self
->query_wait
);
462 * Function irda_open_tsap (self)
464 * Open local Transport Service Access Point (TSAP)
467 static int irda_open_tsap(struct irda_sock
*self
, __u8 tsap_sel
, char *name
)
472 IRDA_WARNING("%s: busy!\n", __func__
);
476 /* Initialize callbacks to be used by the IrDA stack */
477 irda_notify_init(¬ify
);
478 notify
.connect_confirm
= irda_connect_confirm
;
479 notify
.connect_indication
= irda_connect_indication
;
480 notify
.disconnect_indication
= irda_disconnect_indication
;
481 notify
.data_indication
= irda_data_indication
;
482 notify
.udata_indication
= irda_data_indication
;
483 notify
.flow_indication
= irda_flow_indication
;
484 notify
.instance
= self
;
485 strncpy(notify
.name
, name
, NOTIFY_MAX_NAME
);
487 self
->tsap
= irttp_open_tsap(tsap_sel
, DEFAULT_INITIAL_CREDIT
,
489 if (self
->tsap
== NULL
) {
490 IRDA_DEBUG(0, "%s(), Unable to allocate TSAP!\n",
494 /* Remember which TSAP selector we actually got */
495 self
->stsap_sel
= self
->tsap
->stsap_sel
;
501 * Function irda_open_lsap (self)
503 * Open local Link Service Access Point (LSAP). Used for opening Ultra
506 #ifdef CONFIG_IRDA_ULTRA
507 static int irda_open_lsap(struct irda_sock
*self
, int pid
)
512 IRDA_WARNING("%s(), busy!\n", __func__
);
516 /* Initialize callbacks to be used by the IrDA stack */
517 irda_notify_init(¬ify
);
518 notify
.udata_indication
= irda_data_indication
;
519 notify
.instance
= self
;
520 strncpy(notify
.name
, "Ultra", NOTIFY_MAX_NAME
);
522 self
->lsap
= irlmp_open_lsap(LSAP_CONNLESS
, ¬ify
, pid
);
523 if (self
->lsap
== NULL
) {
524 IRDA_DEBUG( 0, "%s(), Unable to allocate LSAP!\n", __func__
);
530 #endif /* CONFIG_IRDA_ULTRA */
533 * Function irda_find_lsap_sel (self, name)
535 * Try to lookup LSAP selector in remote LM-IAS
537 * Basically, we start a IAP query, and then go to sleep. When the query
538 * return, irda_getvalue_confirm will wake us up, and we can examine the
539 * result of the query...
540 * Note that in some case, the query fail even before we go to sleep,
541 * creating some races...
543 static int irda_find_lsap_sel(struct irda_sock
*self
, char *name
)
545 IRDA_DEBUG(2, "%s(%p, %s)\n", __func__
, self
, name
);
548 IRDA_WARNING("%s(): busy with a previous query\n",
553 self
->iriap
= iriap_open(LSAP_ANY
, IAS_CLIENT
, self
,
554 irda_getvalue_confirm
);
555 if(self
->iriap
== NULL
)
558 /* Treat unexpected wakeup as disconnect */
559 self
->errno
= -EHOSTUNREACH
;
561 /* Query remote LM-IAS */
562 iriap_getvaluebyclass_request(self
->iriap
, self
->saddr
, self
->daddr
,
563 name
, "IrDA:TinyTP:LsapSel");
565 /* Wait for answer, if not yet finished (or failed) */
566 if (wait_event_interruptible(self
->query_wait
, (self
->iriap
==NULL
)))
567 /* Treat signals as disconnect */
568 return -EHOSTUNREACH
;
570 /* Check what happened */
573 /* Requested object/attribute doesn't exist */
574 if((self
->errno
== IAS_CLASS_UNKNOWN
) ||
575 (self
->errno
== IAS_ATTRIB_UNKNOWN
))
576 return -EADDRNOTAVAIL
;
578 return -EHOSTUNREACH
;
581 /* Get the remote TSAP selector */
582 switch (self
->ias_result
->type
) {
584 IRDA_DEBUG(4, "%s() int=%d\n",
585 __func__
, self
->ias_result
->t
.integer
);
587 if (self
->ias_result
->t
.integer
!= -1)
588 self
->dtsap_sel
= self
->ias_result
->t
.integer
;
594 IRDA_DEBUG(0, "%s(), bad type!\n", __func__
);
597 if (self
->ias_result
)
598 irias_delete_value(self
->ias_result
);
603 return -EADDRNOTAVAIL
;
607 * Function irda_discover_daddr_and_lsap_sel (self, name)
609 * This try to find a device with the requested service.
611 * It basically look into the discovery log. For each address in the list,
612 * it queries the LM-IAS of the device to find if this device offer
613 * the requested service.
614 * If there is more than one node supporting the service, we complain
615 * to the user (it should move devices around).
616 * The, we set both the destination address and the lsap selector to point
617 * on the service on the unique device we have found.
619 * Note : this function fails if there is more than one device in range,
620 * because IrLMP doesn't disconnect the LAP when the last LSAP is closed.
621 * Moreover, we would need to wait the LAP disconnection...
623 static int irda_discover_daddr_and_lsap_sel(struct irda_sock
*self
, char *name
)
625 discinfo_t
*discoveries
; /* Copy of the discovery log */
626 int number
; /* Number of nodes in the log */
628 int err
= -ENETUNREACH
;
629 __u32 daddr
= DEV_ADDR_ANY
; /* Address we found the service on */
630 __u8 dtsap_sel
= 0x0; /* TSAP associated with it */
632 IRDA_DEBUG(2, "%s(), name=%s\n", __func__
, name
);
634 /* Ask lmp for the current discovery log
635 * Note : we have to use irlmp_get_discoveries(), as opposed
636 * to play with the cachelog directly, because while we are
637 * making our ias query, le log might change... */
638 discoveries
= irlmp_get_discoveries(&number
, self
->mask
.word
,
640 /* Check if the we got some results */
641 if (discoveries
== NULL
)
642 return -ENETUNREACH
; /* No nodes discovered */
645 * Now, check all discovered devices (if any), and connect
646 * client only about the services that the client is
649 for(i
= 0; i
< number
; i
++) {
650 /* Try the address in the log */
651 self
->daddr
= discoveries
[i
].daddr
;
653 IRDA_DEBUG(1, "%s(), trying daddr = %08x\n",
654 __func__
, self
->daddr
);
656 /* Query remote LM-IAS for this service */
657 err
= irda_find_lsap_sel(self
, name
);
660 /* We found the requested service */
661 if(daddr
!= DEV_ADDR_ANY
) {
662 IRDA_DEBUG(1, "%s(), discovered service ''%s'' in two different devices !!!\n",
664 self
->daddr
= DEV_ADDR_ANY
;
668 /* First time we found that one, save it ! */
670 dtsap_sel
= self
->dtsap_sel
;
673 /* Requested service simply doesn't exist on this node */
676 /* Something bad did happen :-( */
677 IRDA_DEBUG(0, "%s(), unexpected IAS query failure\n", __func__
);
678 self
->daddr
= DEV_ADDR_ANY
;
680 return -EHOSTUNREACH
;
684 /* Cleanup our copy of the discovery log */
687 /* Check out what we found */
688 if(daddr
== DEV_ADDR_ANY
) {
689 IRDA_DEBUG(1, "%s(), cannot discover service ''%s'' in any device !!!\n",
691 self
->daddr
= DEV_ADDR_ANY
;
692 return -EADDRNOTAVAIL
;
695 /* Revert back to discovered device & service */
698 self
->dtsap_sel
= dtsap_sel
;
700 IRDA_DEBUG(1, "%s(), discovered requested service ''%s'' at address %08x\n",
701 __func__
, name
, self
->daddr
);
707 * Function irda_getname (sock, uaddr, uaddr_len, peer)
709 * Return the our own, or peers socket address (sockaddr_irda)
712 static int irda_getname(struct socket
*sock
, struct sockaddr
*uaddr
,
713 int *uaddr_len
, int peer
)
715 struct sockaddr_irda saddr
;
716 struct sock
*sk
= sock
->sk
;
717 struct irda_sock
*self
= irda_sk(sk
);
719 memset(&saddr
, 0, sizeof(saddr
));
721 if (sk
->sk_state
!= TCP_ESTABLISHED
)
724 saddr
.sir_family
= AF_IRDA
;
725 saddr
.sir_lsap_sel
= self
->dtsap_sel
;
726 saddr
.sir_addr
= self
->daddr
;
728 saddr
.sir_family
= AF_IRDA
;
729 saddr
.sir_lsap_sel
= self
->stsap_sel
;
730 saddr
.sir_addr
= self
->saddr
;
733 IRDA_DEBUG(1, "%s(), tsap_sel = %#x\n", __func__
, saddr
.sir_lsap_sel
);
734 IRDA_DEBUG(1, "%s(), addr = %08x\n", __func__
, saddr
.sir_addr
);
736 /* uaddr_len come to us uninitialised */
737 *uaddr_len
= sizeof (struct sockaddr_irda
);
738 memcpy(uaddr
, &saddr
, *uaddr_len
);
744 * Function irda_listen (sock, backlog)
746 * Just move to the listen state
749 static int irda_listen(struct socket
*sock
, int backlog
)
751 struct sock
*sk
= sock
->sk
;
752 int err
= -EOPNOTSUPP
;
754 IRDA_DEBUG(2, "%s()\n", __func__
);
758 if ((sk
->sk_type
!= SOCK_STREAM
) && (sk
->sk_type
!= SOCK_SEQPACKET
) &&
759 (sk
->sk_type
!= SOCK_DGRAM
))
762 if (sk
->sk_state
!= TCP_LISTEN
) {
763 sk
->sk_max_ack_backlog
= backlog
;
764 sk
->sk_state
= TCP_LISTEN
;
775 * Function irda_bind (sock, uaddr, addr_len)
777 * Used by servers to register their well known TSAP
780 static int irda_bind(struct socket
*sock
, struct sockaddr
*uaddr
, int addr_len
)
782 struct sock
*sk
= sock
->sk
;
783 struct sockaddr_irda
*addr
= (struct sockaddr_irda
*) uaddr
;
784 struct irda_sock
*self
= irda_sk(sk
);
787 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
789 if (addr_len
!= sizeof(struct sockaddr_irda
))
793 #ifdef CONFIG_IRDA_ULTRA
794 /* Special care for Ultra sockets */
795 if ((sk
->sk_type
== SOCK_DGRAM
) &&
796 (sk
->sk_protocol
== IRDAPROTO_ULTRA
)) {
797 self
->pid
= addr
->sir_lsap_sel
;
799 if (self
->pid
& 0x80) {
800 IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __func__
);
803 err
= irda_open_lsap(self
, self
->pid
);
807 /* Pretend we are connected */
808 sock
->state
= SS_CONNECTED
;
809 sk
->sk_state
= TCP_ESTABLISHED
;
814 #endif /* CONFIG_IRDA_ULTRA */
816 self
->ias_obj
= irias_new_object(addr
->sir_name
, jiffies
);
818 if (self
->ias_obj
== NULL
)
821 err
= irda_open_tsap(self
, addr
->sir_lsap_sel
, addr
->sir_name
);
823 irias_delete_object(self
->ias_obj
);
824 self
->ias_obj
= NULL
;
828 /* Register with LM-IAS */
829 irias_add_integer_attrib(self
->ias_obj
, "IrDA:TinyTP:LsapSel",
830 self
->stsap_sel
, IAS_KERNEL_ATTR
);
831 irias_insert_object(self
->ias_obj
);
840 * Function irda_accept (sock, newsock, flags)
842 * Wait for incoming connection
845 static int irda_accept(struct socket
*sock
, struct socket
*newsock
, int flags
)
847 struct sock
*sk
= sock
->sk
;
848 struct irda_sock
*new, *self
= irda_sk(sk
);
853 IRDA_DEBUG(2, "%s()\n", __func__
);
855 err
= irda_create(sock_net(sk
), newsock
, sk
->sk_protocol
, 0);
862 if (sock
->state
!= SS_UNCONNECTED
)
865 if ((sk
= sock
->sk
) == NULL
)
869 if ((sk
->sk_type
!= SOCK_STREAM
) && (sk
->sk_type
!= SOCK_SEQPACKET
) &&
870 (sk
->sk_type
!= SOCK_DGRAM
))
874 if (sk
->sk_state
!= TCP_LISTEN
)
878 * The read queue this time is holding sockets ready to use
879 * hooked into the SABM we saved
883 * We can perform the accept only if there is incoming data
884 * on the listening socket.
885 * So, we will block the caller until we receive any data.
886 * If the caller was waiting on select() or poll() before
887 * calling us, the data is waiting for us ;-)
891 skb
= skb_dequeue(&sk
->sk_receive_queue
);
895 /* Non blocking operation */
897 if (flags
& O_NONBLOCK
)
900 err
= wait_event_interruptible(*(sk_sleep(sk
)),
901 skb_peek(&sk
->sk_receive_queue
));
911 newsk
->sk_state
= TCP_ESTABLISHED
;
913 new = irda_sk(newsk
);
915 /* Now attach up the new socket */
916 new->tsap
= irttp_dup(self
->tsap
, new);
917 err
= -EPERM
; /* value does not seem to make sense. -arnd */
919 IRDA_DEBUG(0, "%s(), dup failed!\n", __func__
);
924 new->stsap_sel
= new->tsap
->stsap_sel
;
925 new->dtsap_sel
= new->tsap
->dtsap_sel
;
926 new->saddr
= irttp_get_saddr(new->tsap
);
927 new->daddr
= irttp_get_daddr(new->tsap
);
929 new->max_sdu_size_tx
= self
->max_sdu_size_tx
;
930 new->max_sdu_size_rx
= self
->max_sdu_size_rx
;
931 new->max_data_size
= self
->max_data_size
;
932 new->max_header_size
= self
->max_header_size
;
934 memcpy(&new->qos_tx
, &self
->qos_tx
, sizeof(struct qos_info
));
936 /* Clean up the original one to keep it in listen state */
937 irttp_listen(self
->tsap
);
940 sk
->sk_ack_backlog
--;
942 newsock
->state
= SS_CONNECTED
;
944 irda_connect_response(new);
952 * Function irda_connect (sock, uaddr, addr_len, flags)
954 * Connect to a IrDA device
956 * The main difference with a "standard" connect is that with IrDA we need
957 * to resolve the service name into a TSAP selector (in TCP, port number
958 * doesn't have to be resolved).
959 * Because of this service name resoltion, we can offer "auto-connect",
960 * where we connect to a service without specifying a destination address.
962 * Note : by consulting "errno", the user space caller may learn the cause
963 * of the failure. Most of them are visible in the function, others may come
964 * from subroutines called and are listed here :
965 * o EBUSY : already processing a connect
966 * o EHOSTUNREACH : bad addr->sir_addr argument
967 * o EADDRNOTAVAIL : bad addr->sir_name argument
968 * o ENOTUNIQ : more than one node has addr->sir_name (auto-connect)
969 * o ENETUNREACH : no node found on the network (auto-connect)
971 static int irda_connect(struct socket
*sock
, struct sockaddr
*uaddr
,
972 int addr_len
, int flags
)
974 struct sock
*sk
= sock
->sk
;
975 struct sockaddr_irda
*addr
= (struct sockaddr_irda
*) uaddr
;
976 struct irda_sock
*self
= irda_sk(sk
);
979 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
982 /* Don't allow connect for Ultra sockets */
983 err
= -ESOCKTNOSUPPORT
;
984 if ((sk
->sk_type
== SOCK_DGRAM
) && (sk
->sk_protocol
== IRDAPROTO_ULTRA
))
987 if (sk
->sk_state
== TCP_ESTABLISHED
&& sock
->state
== SS_CONNECTING
) {
988 sock
->state
= SS_CONNECTED
;
990 goto out
; /* Connect completed during a ERESTARTSYS event */
993 if (sk
->sk_state
== TCP_CLOSE
&& sock
->state
== SS_CONNECTING
) {
994 sock
->state
= SS_UNCONNECTED
;
999 err
= -EISCONN
; /* No reconnect on a seqpacket socket */
1000 if (sk
->sk_state
== TCP_ESTABLISHED
)
1003 sk
->sk_state
= TCP_CLOSE
;
1004 sock
->state
= SS_UNCONNECTED
;
1007 if (addr_len
!= sizeof(struct sockaddr_irda
))
1010 /* Check if user supplied any destination device address */
1011 if ((!addr
->sir_addr
) || (addr
->sir_addr
== DEV_ADDR_ANY
)) {
1012 /* Try to find one suitable */
1013 err
= irda_discover_daddr_and_lsap_sel(self
, addr
->sir_name
);
1015 IRDA_DEBUG(0, "%s(), auto-connect failed!\n", __func__
);
1019 /* Use the one provided by the user */
1020 self
->daddr
= addr
->sir_addr
;
1021 IRDA_DEBUG(1, "%s(), daddr = %08x\n", __func__
, self
->daddr
);
1023 /* If we don't have a valid service name, we assume the
1024 * user want to connect on a specific LSAP. Prevent
1025 * the use of invalid LSAPs (IrLMP 1.1 p10). Jean II */
1026 if((addr
->sir_name
[0] != '\0') ||
1027 (addr
->sir_lsap_sel
>= 0x70)) {
1028 /* Query remote LM-IAS using service name */
1029 err
= irda_find_lsap_sel(self
, addr
->sir_name
);
1031 IRDA_DEBUG(0, "%s(), connect failed!\n", __func__
);
1035 /* Directly connect to the remote LSAP
1036 * specified by the sir_lsap field.
1037 * Please use with caution, in IrDA LSAPs are
1038 * dynamic and there is no "well-known" LSAP. */
1039 self
->dtsap_sel
= addr
->sir_lsap_sel
;
1043 /* Check if we have opened a local TSAP */
1045 irda_open_tsap(self
, LSAP_ANY
, addr
->sir_name
);
1047 /* Move to connecting socket, start sending Connect Requests */
1048 sock
->state
= SS_CONNECTING
;
1049 sk
->sk_state
= TCP_SYN_SENT
;
1051 /* Connect to remote device */
1052 err
= irttp_connect_request(self
->tsap
, self
->dtsap_sel
,
1053 self
->saddr
, self
->daddr
, NULL
,
1054 self
->max_sdu_size_rx
, NULL
);
1056 IRDA_DEBUG(0, "%s(), connect failed!\n", __func__
);
1062 if (sk
->sk_state
!= TCP_ESTABLISHED
&& (flags
& O_NONBLOCK
))
1066 if (wait_event_interruptible(*(sk_sleep(sk
)),
1067 (sk
->sk_state
!= TCP_SYN_SENT
)))
1070 if (sk
->sk_state
!= TCP_ESTABLISHED
) {
1071 sock
->state
= SS_UNCONNECTED
;
1072 if (sk
->sk_prot
->disconnect(sk
, flags
))
1073 sock
->state
= SS_DISCONNECTING
;
1074 err
= sock_error(sk
);
1080 sock
->state
= SS_CONNECTED
;
1082 /* At this point, IrLMP has assigned our source address */
1083 self
->saddr
= irttp_get_saddr(self
->tsap
);
1090 static struct proto irda_proto
= {
1092 .owner
= THIS_MODULE
,
1093 .obj_size
= sizeof(struct irda_sock
),
1097 * Function irda_create (sock, protocol)
1099 * Create IrDA socket
1102 static int irda_create(struct net
*net
, struct socket
*sock
, int protocol
,
1106 struct irda_sock
*self
;
1108 IRDA_DEBUG(2, "%s()\n", __func__
);
1110 if (net
!= &init_net
)
1111 return -EAFNOSUPPORT
;
1113 /* Check for valid socket type */
1114 switch (sock
->type
) {
1115 case SOCK_STREAM
: /* For TTP connections with SAR disabled */
1116 case SOCK_SEQPACKET
: /* For TTP connections with SAR enabled */
1117 case SOCK_DGRAM
: /* For TTP Unitdata or LMP Ultra transfers */
1120 return -ESOCKTNOSUPPORT
;
1123 /* Allocate networking socket */
1124 sk
= sk_alloc(net
, PF_IRDA
, GFP_ATOMIC
, &irda_proto
);
1129 IRDA_DEBUG(2, "%s() : self is %p\n", __func__
, self
);
1131 init_waitqueue_head(&self
->query_wait
);
1133 switch (sock
->type
) {
1135 sock
->ops
= &irda_stream_ops
;
1136 self
->max_sdu_size_rx
= TTP_SAR_DISABLE
;
1138 case SOCK_SEQPACKET
:
1139 sock
->ops
= &irda_seqpacket_ops
;
1140 self
->max_sdu_size_rx
= TTP_SAR_UNBOUND
;
1144 #ifdef CONFIG_IRDA_ULTRA
1145 case IRDAPROTO_ULTRA
:
1146 sock
->ops
= &irda_ultra_ops
;
1147 /* Initialise now, because we may send on unbound
1148 * sockets. Jean II */
1149 self
->max_data_size
= ULTRA_MAX_DATA
- LMP_PID_HEADER
;
1150 self
->max_header_size
= IRDA_MAX_HEADER
+ LMP_PID_HEADER
;
1152 #endif /* CONFIG_IRDA_ULTRA */
1153 case IRDAPROTO_UNITDATA
:
1154 sock
->ops
= &irda_dgram_ops
;
1155 /* We let Unitdata conn. be like seqpack conn. */
1156 self
->max_sdu_size_rx
= TTP_SAR_UNBOUND
;
1160 return -ESOCKTNOSUPPORT
;
1165 return -ESOCKTNOSUPPORT
;
1168 /* Initialise networking socket struct */
1169 sock_init_data(sock
, sk
); /* Note : set sk->sk_refcnt to 1 */
1170 sk
->sk_family
= PF_IRDA
;
1171 sk
->sk_protocol
= protocol
;
1173 /* Register as a client with IrLMP */
1174 self
->ckey
= irlmp_register_client(0, NULL
, NULL
, NULL
);
1175 self
->mask
.word
= 0xffff;
1176 self
->rx_flow
= self
->tx_flow
= FLOW_START
;
1177 self
->nslots
= DISCOVERY_DEFAULT_SLOTS
;
1178 self
->daddr
= DEV_ADDR_ANY
; /* Until we get connected */
1179 self
->saddr
= 0x0; /* so IrLMP assign us any link */
1184 * Function irda_destroy_socket (self)
1189 static void irda_destroy_socket(struct irda_sock
*self
)
1191 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
1193 /* Unregister with IrLMP */
1194 irlmp_unregister_client(self
->ckey
);
1195 irlmp_unregister_service(self
->skey
);
1197 /* Unregister with LM-IAS */
1198 if (self
->ias_obj
) {
1199 irias_delete_object(self
->ias_obj
);
1200 self
->ias_obj
= NULL
;
1204 iriap_close(self
->iriap
);
1209 irttp_disconnect_request(self
->tsap
, NULL
, P_NORMAL
);
1210 irttp_close_tsap(self
->tsap
);
1213 #ifdef CONFIG_IRDA_ULTRA
1215 irlmp_close_lsap(self
->lsap
);
1218 #endif /* CONFIG_IRDA_ULTRA */
1222 * Function irda_release (sock)
1224 static int irda_release(struct socket
*sock
)
1226 struct sock
*sk
= sock
->sk
;
1228 IRDA_DEBUG(2, "%s()\n", __func__
);
1234 sk
->sk_state
= TCP_CLOSE
;
1235 sk
->sk_shutdown
|= SEND_SHUTDOWN
;
1236 sk
->sk_state_change(sk
);
1238 /* Destroy IrDA socket */
1239 irda_destroy_socket(irda_sk(sk
));
1245 /* Purge queues (see sock_init_data()) */
1246 skb_queue_purge(&sk
->sk_receive_queue
);
1248 /* Destroy networking socket if we are the last reference on it,
1249 * i.e. if(sk->sk_refcnt == 0) -> sk_free(sk) */
1252 /* Notes on socket locking and deallocation... - Jean II
1253 * In theory we should put pairs of sock_hold() / sock_put() to
1254 * prevent the socket to be destroyed whenever there is an
1255 * outstanding request or outstanding incoming packet or event.
1257 * 1) This may include IAS request, both in connect and getsockopt.
1258 * Unfortunately, the situation is a bit more messy than it looks,
1259 * because we close iriap and kfree(self) above.
1261 * 2) This may include selective discovery in getsockopt.
1262 * Same stuff as above, irlmp registration and self are gone.
1264 * Probably 1 and 2 may not matter, because it's all triggered
1265 * by a process and the socket layer already prevent the
1266 * socket to go away while a process is holding it, through
1267 * sockfd_put() and fput()...
1269 * 3) This may include deferred TSAP closure. In particular,
1270 * we may receive a late irda_disconnect_indication()
1271 * Fortunately, (tsap_cb *)->close_pend should protect us
1274 * I did some testing on SMP, and it looks solid. And the socket
1275 * memory leak is now gone... - Jean II
1282 * Function irda_sendmsg (iocb, sock, msg, len)
1284 * Send message down to TinyTP. This function is used for both STREAM and
1285 * SEQPACK services. This is possible since it forces the client to
1286 * fragment the message if necessary
1288 static int irda_sendmsg(struct kiocb
*iocb
, struct socket
*sock
,
1289 struct msghdr
*msg
, size_t len
)
1291 struct sock
*sk
= sock
->sk
;
1292 struct irda_sock
*self
;
1293 struct sk_buff
*skb
;
1296 IRDA_DEBUG(4, "%s(), len=%zd\n", __func__
, len
);
1298 /* Note : socket.c set MSG_EOR on SEQPACKET sockets */
1299 if (msg
->msg_flags
& ~(MSG_DONTWAIT
| MSG_EOR
| MSG_CMSG_COMPAT
|
1307 if (sk
->sk_shutdown
& SEND_SHUTDOWN
)
1310 if (sk
->sk_state
!= TCP_ESTABLISHED
) {
1317 /* Check if IrTTP is wants us to slow down */
1319 if (wait_event_interruptible(*(sk_sleep(sk
)),
1320 (self
->tx_flow
!= FLOW_STOP
|| sk
->sk_state
!= TCP_ESTABLISHED
))) {
1325 /* Check if we are still connected */
1326 if (sk
->sk_state
!= TCP_ESTABLISHED
) {
1331 /* Check that we don't send out too big frames */
1332 if (len
> self
->max_data_size
) {
1333 IRDA_DEBUG(2, "%s(), Chopping frame from %zd to %d bytes!\n",
1334 __func__
, len
, self
->max_data_size
);
1335 len
= self
->max_data_size
;
1338 skb
= sock_alloc_send_skb(sk
, len
+ self
->max_header_size
+ 16,
1339 msg
->msg_flags
& MSG_DONTWAIT
, &err
);
1343 skb_reserve(skb
, self
->max_header_size
+ 16);
1344 skb_reset_transport_header(skb
);
1346 err
= memcpy_fromiovec(skb_transport_header(skb
), msg
->msg_iov
, len
);
1353 * Just send the message to TinyTP, and let it deal with possible
1354 * errors. No need to duplicate all that here
1356 err
= irttp_data_request(self
->tsap
, skb
);
1358 IRDA_DEBUG(0, "%s(), err=%d\n", __func__
, err
);
1363 /* Tell client how much data we actually sent */
1367 err
= sk_stream_error(sk
, msg
->msg_flags
, err
);
1375 * Function irda_recvmsg_dgram (iocb, sock, msg, size, flags)
1377 * Try to receive message and copy it to user. The frame is discarded
1378 * after being read, regardless of how much the user actually read
1380 static int irda_recvmsg_dgram(struct kiocb
*iocb
, struct socket
*sock
,
1381 struct msghdr
*msg
, size_t size
, int flags
)
1383 struct sock
*sk
= sock
->sk
;
1384 struct irda_sock
*self
= irda_sk(sk
);
1385 struct sk_buff
*skb
;
1389 IRDA_DEBUG(4, "%s()\n", __func__
);
1391 skb
= skb_recv_datagram(sk
, flags
& ~MSG_DONTWAIT
,
1392 flags
& MSG_DONTWAIT
, &err
);
1396 skb_reset_transport_header(skb
);
1399 if (copied
> size
) {
1400 IRDA_DEBUG(2, "%s(), Received truncated frame (%zd < %zd)!\n",
1401 __func__
, copied
, size
);
1403 msg
->msg_flags
|= MSG_TRUNC
;
1405 skb_copy_datagram_iovec(skb
, 0, msg
->msg_iov
, copied
);
1407 skb_free_datagram(sk
, skb
);
1410 * Check if we have previously stopped IrTTP and we know
1411 * have more free space in our rx_queue. If so tell IrTTP
1412 * to start delivering frames again before our rx_queue gets
1415 if (self
->rx_flow
== FLOW_STOP
) {
1416 if ((atomic_read(&sk
->sk_rmem_alloc
) << 2) <= sk
->sk_rcvbuf
) {
1417 IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __func__
);
1418 self
->rx_flow
= FLOW_START
;
1419 irttp_flow_request(self
->tsap
, FLOW_START
);
1427 * Function irda_recvmsg_stream (iocb, sock, msg, size, flags)
1429 static int irda_recvmsg_stream(struct kiocb
*iocb
, struct socket
*sock
,
1430 struct msghdr
*msg
, size_t size
, int flags
)
1432 struct sock
*sk
= sock
->sk
;
1433 struct irda_sock
*self
= irda_sk(sk
);
1434 int noblock
= flags
& MSG_DONTWAIT
;
1439 IRDA_DEBUG(3, "%s()\n", __func__
);
1441 if ((err
= sock_error(sk
)) < 0)
1444 if (sock
->flags
& __SO_ACCEPTCON
)
1448 if (flags
& MSG_OOB
)
1452 target
= sock_rcvlowat(sk
, flags
& MSG_WAITALL
, size
);
1453 timeo
= sock_rcvtimeo(sk
, noblock
);
1455 msg
->msg_namelen
= 0;
1459 struct sk_buff
*skb
= skb_dequeue(&sk
->sk_receive_queue
);
1465 if (copied
>= target
)
1468 prepare_to_wait_exclusive(sk_sleep(sk
), &wait
, TASK_INTERRUPTIBLE
);
1471 * POSIX 1003.1g mandates this order.
1473 err
= sock_error(sk
);
1476 else if (sk
->sk_shutdown
& RCV_SHUTDOWN
)
1480 else if (signal_pending(current
))
1481 err
= sock_intr_errno(timeo
);
1482 else if (sk
->sk_state
!= TCP_ESTABLISHED
)
1484 else if (skb_peek(&sk
->sk_receive_queue
) == NULL
)
1485 /* Wait process until data arrives */
1488 finish_wait(sk_sleep(sk
), &wait
);
1492 if (sk
->sk_shutdown
& RCV_SHUTDOWN
)
1498 chunk
= min_t(unsigned int, skb
->len
, size
);
1499 if (memcpy_toiovec(msg
->msg_iov
, skb
->data
, chunk
)) {
1500 skb_queue_head(&sk
->sk_receive_queue
, skb
);
1508 /* Mark read part of skb as used */
1509 if (!(flags
& MSG_PEEK
)) {
1510 skb_pull(skb
, chunk
);
1512 /* put the skb back if we didn't use it up.. */
1514 IRDA_DEBUG(1, "%s(), back on q!\n",
1516 skb_queue_head(&sk
->sk_receive_queue
, skb
);
1522 IRDA_DEBUG(0, "%s() questionable!?\n", __func__
);
1524 /* put message back and return */
1525 skb_queue_head(&sk
->sk_receive_queue
, skb
);
1531 * Check if we have previously stopped IrTTP and we know
1532 * have more free space in our rx_queue. If so tell IrTTP
1533 * to start delivering frames again before our rx_queue gets
1536 if (self
->rx_flow
== FLOW_STOP
) {
1537 if ((atomic_read(&sk
->sk_rmem_alloc
) << 2) <= sk
->sk_rcvbuf
) {
1538 IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __func__
);
1539 self
->rx_flow
= FLOW_START
;
1540 irttp_flow_request(self
->tsap
, FLOW_START
);
1548 * Function irda_sendmsg_dgram (iocb, sock, msg, len)
1550 * Send message down to TinyTP for the unreliable sequenced
1554 static int irda_sendmsg_dgram(struct kiocb
*iocb
, struct socket
*sock
,
1555 struct msghdr
*msg
, size_t len
)
1557 struct sock
*sk
= sock
->sk
;
1558 struct irda_sock
*self
;
1559 struct sk_buff
*skb
;
1562 IRDA_DEBUG(4, "%s(), len=%zd\n", __func__
, len
);
1564 if (msg
->msg_flags
& ~(MSG_DONTWAIT
|MSG_CMSG_COMPAT
))
1569 if (sk
->sk_shutdown
& SEND_SHUTDOWN
) {
1570 send_sig(SIGPIPE
, current
, 0);
1576 if (sk
->sk_state
!= TCP_ESTABLISHED
)
1582 * Check that we don't send out too big frames. This is an unreliable
1583 * service, so we have no fragmentation and no coalescence
1585 if (len
> self
->max_data_size
) {
1586 IRDA_DEBUG(0, "%s(), Warning to much data! "
1587 "Chopping frame from %zd to %d bytes!\n",
1588 __func__
, len
, self
->max_data_size
);
1589 len
= self
->max_data_size
;
1592 skb
= sock_alloc_send_skb(sk
, len
+ self
->max_header_size
,
1593 msg
->msg_flags
& MSG_DONTWAIT
, &err
);
1598 skb_reserve(skb
, self
->max_header_size
);
1599 skb_reset_transport_header(skb
);
1601 IRDA_DEBUG(4, "%s(), appending user data\n", __func__
);
1603 err
= memcpy_fromiovec(skb_transport_header(skb
), msg
->msg_iov
, len
);
1610 * Just send the message to TinyTP, and let it deal with possible
1611 * errors. No need to duplicate all that here
1613 err
= irttp_udata_request(self
->tsap
, skb
);
1615 IRDA_DEBUG(0, "%s(), err=%d\n", __func__
, err
);
1628 * Function irda_sendmsg_ultra (iocb, sock, msg, len)
1630 * Send message down to IrLMP for the unreliable Ultra
1633 #ifdef CONFIG_IRDA_ULTRA
1634 static int irda_sendmsg_ultra(struct kiocb
*iocb
, struct socket
*sock
,
1635 struct msghdr
*msg
, size_t len
)
1637 struct sock
*sk
= sock
->sk
;
1638 struct irda_sock
*self
;
1641 struct sk_buff
*skb
;
1644 IRDA_DEBUG(4, "%s(), len=%zd\n", __func__
, len
);
1647 if (msg
->msg_flags
& ~(MSG_DONTWAIT
|MSG_CMSG_COMPAT
))
1653 if (sk
->sk_shutdown
& SEND_SHUTDOWN
) {
1654 send_sig(SIGPIPE
, current
, 0);
1660 /* Check if an address was specified with sendto. Jean II */
1661 if (msg
->msg_name
) {
1662 struct sockaddr_irda
*addr
= (struct sockaddr_irda
*) msg
->msg_name
;
1664 /* Check address, extract pid. Jean II */
1665 if (msg
->msg_namelen
< sizeof(*addr
))
1667 if (addr
->sir_family
!= AF_IRDA
)
1670 pid
= addr
->sir_lsap_sel
;
1672 IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __func__
);
1677 /* Check that the socket is properly bound to an Ultra
1679 if ((self
->lsap
== NULL
) ||
1680 (sk
->sk_state
!= TCP_ESTABLISHED
)) {
1681 IRDA_DEBUG(0, "%s(), socket not bound to Ultra PID.\n",
1686 /* Use PID from socket */
1691 * Check that we don't send out too big frames. This is an unreliable
1692 * service, so we have no fragmentation and no coalescence
1694 if (len
> self
->max_data_size
) {
1695 IRDA_DEBUG(0, "%s(), Warning to much data! "
1696 "Chopping frame from %zd to %d bytes!\n",
1697 __func__
, len
, self
->max_data_size
);
1698 len
= self
->max_data_size
;
1701 skb
= sock_alloc_send_skb(sk
, len
+ self
->max_header_size
,
1702 msg
->msg_flags
& MSG_DONTWAIT
, &err
);
1707 skb_reserve(skb
, self
->max_header_size
);
1708 skb_reset_transport_header(skb
);
1710 IRDA_DEBUG(4, "%s(), appending user data\n", __func__
);
1712 err
= memcpy_fromiovec(skb_transport_header(skb
), msg
->msg_iov
, len
);
1718 err
= irlmp_connless_data_request((bound
? self
->lsap
: NULL
),
1721 IRDA_DEBUG(0, "%s(), err=%d\n", __func__
, err
);
1726 #endif /* CONFIG_IRDA_ULTRA */
1729 * Function irda_shutdown (sk, how)
1731 static int irda_shutdown(struct socket
*sock
, int how
)
1733 struct sock
*sk
= sock
->sk
;
1734 struct irda_sock
*self
= irda_sk(sk
);
1736 IRDA_DEBUG(1, "%s(%p)\n", __func__
, self
);
1740 sk
->sk_state
= TCP_CLOSE
;
1741 sk
->sk_shutdown
|= SEND_SHUTDOWN
;
1742 sk
->sk_state_change(sk
);
1745 iriap_close(self
->iriap
);
1750 irttp_disconnect_request(self
->tsap
, NULL
, P_NORMAL
);
1751 irttp_close_tsap(self
->tsap
);
1755 /* A few cleanup so the socket look as good as new... */
1756 self
->rx_flow
= self
->tx_flow
= FLOW_START
; /* needed ??? */
1757 self
->daddr
= DEV_ADDR_ANY
; /* Until we get re-connected */
1758 self
->saddr
= 0x0; /* so IrLMP assign us any link */
1766 * Function irda_poll (file, sock, wait)
1768 static unsigned int irda_poll(struct file
* file
, struct socket
*sock
,
1771 struct sock
*sk
= sock
->sk
;
1772 struct irda_sock
*self
= irda_sk(sk
);
1775 IRDA_DEBUG(4, "%s()\n", __func__
);
1777 poll_wait(file
, sk_sleep(sk
), wait
);
1780 /* Exceptional events? */
1783 if (sk
->sk_shutdown
& RCV_SHUTDOWN
) {
1784 IRDA_DEBUG(0, "%s(), POLLHUP\n", __func__
);
1789 if (!skb_queue_empty(&sk
->sk_receive_queue
)) {
1790 IRDA_DEBUG(4, "Socket is readable\n");
1791 mask
|= POLLIN
| POLLRDNORM
;
1794 /* Connection-based need to check for termination and startup */
1795 switch (sk
->sk_type
) {
1797 if (sk
->sk_state
== TCP_CLOSE
) {
1798 IRDA_DEBUG(0, "%s(), POLLHUP\n", __func__
);
1802 if (sk
->sk_state
== TCP_ESTABLISHED
) {
1803 if ((self
->tx_flow
== FLOW_START
) &&
1806 mask
|= POLLOUT
| POLLWRNORM
| POLLWRBAND
;
1810 case SOCK_SEQPACKET
:
1811 if ((self
->tx_flow
== FLOW_START
) &&
1814 mask
|= POLLOUT
| POLLWRNORM
| POLLWRBAND
;
1818 if (sock_writeable(sk
))
1819 mask
|= POLLOUT
| POLLWRNORM
| POLLWRBAND
;
1829 * Function irda_ioctl (sock, cmd, arg)
1831 static int irda_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
)
1833 struct sock
*sk
= sock
->sk
;
1836 IRDA_DEBUG(4, "%s(), cmd=%#x\n", __func__
, cmd
);
1843 amount
= sk
->sk_sndbuf
- sk_wmem_alloc_get(sk
);
1846 err
= put_user(amount
, (unsigned int __user
*)arg
);
1851 struct sk_buff
*skb
;
1853 /* These two are safe on a single CPU system as only user tasks fiddle here */
1854 if ((skb
= skb_peek(&sk
->sk_receive_queue
)) != NULL
)
1856 err
= put_user(amount
, (unsigned int __user
*)arg
);
1862 err
= sock_get_timestamp(sk
, (struct timeval __user
*)arg
);
1867 case SIOCGIFDSTADDR
:
1868 case SIOCSIFDSTADDR
:
1869 case SIOCGIFBRDADDR
:
1870 case SIOCSIFBRDADDR
:
1871 case SIOCGIFNETMASK
:
1872 case SIOCSIFNETMASK
:
1877 IRDA_DEBUG(1, "%s(), doing device ioctl!\n", __func__
);
1884 #ifdef CONFIG_COMPAT
1886 * Function irda_ioctl (sock, cmd, arg)
1888 static int irda_compat_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
)
1891 * All IRDA's ioctl are standard ones.
1893 return -ENOIOCTLCMD
;
1898 * Function irda_setsockopt (sock, level, optname, optval, optlen)
1900 * Set some options for the socket
1903 static int irda_setsockopt(struct socket
*sock
, int level
, int optname
,
1904 char __user
*optval
, unsigned int optlen
)
1906 struct sock
*sk
= sock
->sk
;
1907 struct irda_sock
*self
= irda_sk(sk
);
1908 struct irda_ias_set
*ias_opt
;
1909 struct ias_object
*ias_obj
;
1910 struct ias_attrib
* ias_attr
; /* Attribute in IAS object */
1911 int opt
, free_ias
= 0, err
= 0;
1913 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
1915 if (level
!= SOL_IRLMP
)
1916 return -ENOPROTOOPT
;
1922 /* The user want to add an attribute to an existing IAS object
1923 * (in the IAS database) or to create a new object with this
1925 * We first query IAS to know if the object exist, and then
1926 * create the right attribute...
1929 if (optlen
!= sizeof(struct irda_ias_set
)) {
1934 ias_opt
= kmalloc(sizeof(struct irda_ias_set
), GFP_ATOMIC
);
1935 if (ias_opt
== NULL
) {
1940 /* Copy query to the driver. */
1941 if (copy_from_user(ias_opt
, optval
, optlen
)) {
1947 /* Find the object we target.
1948 * If the user gives us an empty string, we use the object
1949 * associated with this socket. This will workaround
1950 * duplicated class name - Jean II */
1951 if(ias_opt
->irda_class_name
[0] == '\0') {
1952 if(self
->ias_obj
== NULL
) {
1957 ias_obj
= self
->ias_obj
;
1959 ias_obj
= irias_find_object(ias_opt
->irda_class_name
);
1961 /* Only ROOT can mess with the global IAS database.
1962 * Users can only add attributes to the object associated
1963 * with the socket they own - Jean II */
1964 if((!capable(CAP_NET_ADMIN
)) &&
1965 ((ias_obj
== NULL
) || (ias_obj
!= self
->ias_obj
))) {
1971 /* If the object doesn't exist, create it */
1972 if(ias_obj
== (struct ias_object
*) NULL
) {
1973 /* Create a new object */
1974 ias_obj
= irias_new_object(ias_opt
->irda_class_name
,
1976 if (ias_obj
== NULL
) {
1984 /* Do we have the attribute already ? */
1985 if(irias_find_attrib(ias_obj
, ias_opt
->irda_attrib_name
)) {
1988 kfree(ias_obj
->name
);
1995 /* Look at the type */
1996 switch(ias_opt
->irda_attrib_type
) {
1998 /* Add an integer attribute */
1999 irias_add_integer_attrib(
2001 ias_opt
->irda_attrib_name
,
2002 ias_opt
->attribute
.irda_attrib_int
,
2007 if(ias_opt
->attribute
.irda_attrib_octet_seq
.len
>
2008 IAS_MAX_OCTET_STRING
) {
2011 kfree(ias_obj
->name
);
2018 /* Add an octet sequence attribute */
2019 irias_add_octseq_attrib(
2021 ias_opt
->irda_attrib_name
,
2022 ias_opt
->attribute
.irda_attrib_octet_seq
.octet_seq
,
2023 ias_opt
->attribute
.irda_attrib_octet_seq
.len
,
2027 /* Should check charset & co */
2029 /* The length is encoded in a __u8, and
2030 * IAS_MAX_STRING == 256, so there is no way
2031 * userspace can pass us a string too large.
2033 /* NULL terminate the string (avoid troubles) */
2034 ias_opt
->attribute
.irda_attrib_string
.string
[ias_opt
->attribute
.irda_attrib_string
.len
] = '\0';
2035 /* Add a string attribute */
2036 irias_add_string_attrib(
2038 ias_opt
->irda_attrib_name
,
2039 ias_opt
->attribute
.irda_attrib_string
.string
,
2045 kfree(ias_obj
->name
);
2051 irias_insert_object(ias_obj
);
2055 /* The user want to delete an object from our local IAS
2056 * database. We just need to query the IAS, check is the
2057 * object is not owned by the kernel and delete it.
2060 if (optlen
!= sizeof(struct irda_ias_set
)) {
2065 ias_opt
= kmalloc(sizeof(struct irda_ias_set
), GFP_ATOMIC
);
2066 if (ias_opt
== NULL
) {
2071 /* Copy query to the driver. */
2072 if (copy_from_user(ias_opt
, optval
, optlen
)) {
2078 /* Find the object we target.
2079 * If the user gives us an empty string, we use the object
2080 * associated with this socket. This will workaround
2081 * duplicated class name - Jean II */
2082 if(ias_opt
->irda_class_name
[0] == '\0')
2083 ias_obj
= self
->ias_obj
;
2085 ias_obj
= irias_find_object(ias_opt
->irda_class_name
);
2086 if(ias_obj
== (struct ias_object
*) NULL
) {
2092 /* Only ROOT can mess with the global IAS database.
2093 * Users can only del attributes from the object associated
2094 * with the socket they own - Jean II */
2095 if((!capable(CAP_NET_ADMIN
)) &&
2096 ((ias_obj
== NULL
) || (ias_obj
!= self
->ias_obj
))) {
2102 /* Find the attribute (in the object) we target */
2103 ias_attr
= irias_find_attrib(ias_obj
,
2104 ias_opt
->irda_attrib_name
);
2105 if(ias_attr
== (struct ias_attrib
*) NULL
) {
2111 /* Check is the user space own the object */
2112 if(ias_attr
->value
->owner
!= IAS_USER_ATTR
) {
2113 IRDA_DEBUG(1, "%s(), attempting to delete a kernel attribute\n", __func__
);
2119 /* Remove the attribute (and maybe the object) */
2120 irias_delete_attrib(ias_obj
, ias_attr
, 1);
2123 case IRLMP_MAX_SDU_SIZE
:
2124 if (optlen
< sizeof(int)) {
2129 if (get_user(opt
, (int __user
*)optval
)) {
2134 /* Only possible for a seqpacket service (TTP with SAR) */
2135 if (sk
->sk_type
!= SOCK_SEQPACKET
) {
2136 IRDA_DEBUG(2, "%s(), setting max_sdu_size = %d\n",
2138 self
->max_sdu_size_rx
= opt
;
2140 IRDA_WARNING("%s: not allowed to set MAXSDUSIZE for this socket type!\n",
2146 case IRLMP_HINTS_SET
:
2147 if (optlen
< sizeof(int)) {
2152 /* The input is really a (__u8 hints[2]), easier as an int */
2153 if (get_user(opt
, (int __user
*)optval
)) {
2158 /* Unregister any old registration */
2160 irlmp_unregister_service(self
->skey
);
2162 self
->skey
= irlmp_register_service((__u16
) opt
);
2164 case IRLMP_HINT_MASK_SET
:
2165 /* As opposed to the previous case which set the hint bits
2166 * that we advertise, this one set the filter we use when
2167 * making a discovery (nodes which don't match any hint
2168 * bit in the mask are not reported).
2170 if (optlen
< sizeof(int)) {
2175 /* The input is really a (__u8 hints[2]), easier as an int */
2176 if (get_user(opt
, (int __user
*)optval
)) {
2181 /* Set the new hint mask */
2182 self
->mask
.word
= (__u16
) opt
;
2183 /* Mask out extension bits */
2184 self
->mask
.word
&= 0x7f7f;
2185 /* Check if no bits */
2186 if(!self
->mask
.word
)
2187 self
->mask
.word
= 0xFFFF;
2202 * Function irda_extract_ias_value(ias_opt, ias_value)
2204 * Translate internal IAS value structure to the user space representation
2206 * The external representation of IAS values, as we exchange them with
2207 * user space program is quite different from the internal representation,
2208 * as stored in the IAS database (because we need a flat structure for
2209 * crossing kernel boundary).
2210 * This function transform the former in the latter. We also check
2211 * that the value type is valid.
2213 static int irda_extract_ias_value(struct irda_ias_set
*ias_opt
,
2214 struct ias_value
*ias_value
)
2216 /* Look at the type */
2217 switch (ias_value
->type
) {
2219 /* Copy the integer */
2220 ias_opt
->attribute
.irda_attrib_int
= ias_value
->t
.integer
;
2224 ias_opt
->attribute
.irda_attrib_octet_seq
.len
= ias_value
->len
;
2226 memcpy(ias_opt
->attribute
.irda_attrib_octet_seq
.octet_seq
,
2227 ias_value
->t
.oct_seq
, ias_value
->len
);
2231 ias_opt
->attribute
.irda_attrib_string
.len
= ias_value
->len
;
2232 ias_opt
->attribute
.irda_attrib_string
.charset
= ias_value
->charset
;
2234 memcpy(ias_opt
->attribute
.irda_attrib_string
.string
,
2235 ias_value
->t
.string
, ias_value
->len
);
2236 /* NULL terminate the string (avoid troubles) */
2237 ias_opt
->attribute
.irda_attrib_string
.string
[ias_value
->len
] = '\0';
2244 /* Copy type over */
2245 ias_opt
->irda_attrib_type
= ias_value
->type
;
2251 * Function irda_getsockopt (sock, level, optname, optval, optlen)
2253 static int irda_getsockopt(struct socket
*sock
, int level
, int optname
,
2254 char __user
*optval
, int __user
*optlen
)
2256 struct sock
*sk
= sock
->sk
;
2257 struct irda_sock
*self
= irda_sk(sk
);
2258 struct irda_device_list list
;
2259 struct irda_device_info
*discoveries
;
2260 struct irda_ias_set
* ias_opt
; /* IAS get/query params */
2261 struct ias_object
* ias_obj
; /* Object in IAS */
2262 struct ias_attrib
* ias_attr
; /* Attribute in IAS object */
2263 int daddr
= DEV_ADDR_ANY
; /* Dest address for IAS queries */
2269 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
2271 if (level
!= SOL_IRLMP
)
2272 return -ENOPROTOOPT
;
2274 if (get_user(len
, optlen
))
2283 case IRLMP_ENUMDEVICES
:
2284 /* Ask lmp for the current discovery log */
2285 discoveries
= irlmp_get_discoveries(&list
.len
, self
->mask
.word
,
2287 /* Check if the we got some results */
2288 if (discoveries
== NULL
) {
2290 goto out
; /* Didn't find any devices */
2293 /* Write total list length back to client */
2294 if (copy_to_user(optval
, &list
,
2295 sizeof(struct irda_device_list
) -
2296 sizeof(struct irda_device_info
)))
2299 /* Offset to first device entry */
2300 offset
= sizeof(struct irda_device_list
) -
2301 sizeof(struct irda_device_info
);
2303 /* Copy the list itself - watch for overflow */
2304 if (list
.len
> 2048) {
2308 total
= offset
+ (list
.len
* sizeof(struct irda_device_info
));
2311 if (copy_to_user(optval
+offset
, discoveries
, total
- offset
))
2314 /* Write total number of bytes used back to client */
2315 if (put_user(total
, optlen
))
2318 /* Free up our buffer */
2321 case IRLMP_MAX_SDU_SIZE
:
2322 val
= self
->max_data_size
;
2324 if (put_user(len
, optlen
)) {
2329 if (copy_to_user(optval
, &val
, len
)) {
2336 /* The user want an object from our local IAS database.
2337 * We just need to query the IAS and return the value
2340 /* Check that the user has allocated the right space for us */
2341 if (len
!= sizeof(struct irda_ias_set
)) {
2346 ias_opt
= kmalloc(sizeof(struct irda_ias_set
), GFP_ATOMIC
);
2347 if (ias_opt
== NULL
) {
2352 /* Copy query to the driver. */
2353 if (copy_from_user(ias_opt
, optval
, len
)) {
2359 /* Find the object we target.
2360 * If the user gives us an empty string, we use the object
2361 * associated with this socket. This will workaround
2362 * duplicated class name - Jean II */
2363 if(ias_opt
->irda_class_name
[0] == '\0')
2364 ias_obj
= self
->ias_obj
;
2366 ias_obj
= irias_find_object(ias_opt
->irda_class_name
);
2367 if(ias_obj
== (struct ias_object
*) NULL
) {
2373 /* Find the attribute (in the object) we target */
2374 ias_attr
= irias_find_attrib(ias_obj
,
2375 ias_opt
->irda_attrib_name
);
2376 if(ias_attr
== (struct ias_attrib
*) NULL
) {
2382 /* Translate from internal to user structure */
2383 err
= irda_extract_ias_value(ias_opt
, ias_attr
->value
);
2389 /* Copy reply to the user */
2390 if (copy_to_user(optval
, ias_opt
,
2391 sizeof(struct irda_ias_set
))) {
2396 /* Note : don't need to put optlen, we checked it */
2399 case IRLMP_IAS_QUERY
:
2400 /* The user want an object from a remote IAS database.
2401 * We need to use IAP to query the remote database and
2402 * then wait for the answer to come back. */
2404 /* Check that the user has allocated the right space for us */
2405 if (len
!= sizeof(struct irda_ias_set
)) {
2410 ias_opt
= kmalloc(sizeof(struct irda_ias_set
), GFP_ATOMIC
);
2411 if (ias_opt
== NULL
) {
2416 /* Copy query to the driver. */
2417 if (copy_from_user(ias_opt
, optval
, len
)) {
2423 /* At this point, there are two cases...
2424 * 1) the socket is connected - that's the easy case, we
2425 * just query the device we are connected to...
2426 * 2) the socket is not connected - the user doesn't want
2427 * to connect and/or may not have a valid service name
2428 * (so can't create a fake connection). In this case,
2429 * we assume that the user pass us a valid destination
2430 * address in the requesting structure...
2432 if(self
->daddr
!= DEV_ADDR_ANY
) {
2433 /* We are connected - reuse known daddr */
2434 daddr
= self
->daddr
;
2436 /* We are not connected, we must specify a valid
2437 * destination address */
2438 daddr
= ias_opt
->daddr
;
2439 if((!daddr
) || (daddr
== DEV_ADDR_ANY
)) {
2446 /* Check that we can proceed with IAP */
2448 IRDA_WARNING("%s: busy with a previous query\n",
2455 self
->iriap
= iriap_open(LSAP_ANY
, IAS_CLIENT
, self
,
2456 irda_getvalue_confirm
);
2458 if (self
->iriap
== NULL
) {
2464 /* Treat unexpected wakeup as disconnect */
2465 self
->errno
= -EHOSTUNREACH
;
2467 /* Query remote LM-IAS */
2468 iriap_getvaluebyclass_request(self
->iriap
,
2470 ias_opt
->irda_class_name
,
2471 ias_opt
->irda_attrib_name
);
2473 /* Wait for answer, if not yet finished (or failed) */
2474 if (wait_event_interruptible(self
->query_wait
,
2475 (self
->iriap
== NULL
))) {
2476 /* pending request uses copy of ias_opt-content
2477 * we can free it regardless! */
2479 /* Treat signals as disconnect */
2480 err
= -EHOSTUNREACH
;
2484 /* Check what happened */
2488 /* Requested object/attribute doesn't exist */
2489 if((self
->errno
== IAS_CLASS_UNKNOWN
) ||
2490 (self
->errno
== IAS_ATTRIB_UNKNOWN
))
2491 err
= -EADDRNOTAVAIL
;
2493 err
= -EHOSTUNREACH
;
2498 /* Translate from internal to user structure */
2499 err
= irda_extract_ias_value(ias_opt
, self
->ias_result
);
2500 if (self
->ias_result
)
2501 irias_delete_value(self
->ias_result
);
2507 /* Copy reply to the user */
2508 if (copy_to_user(optval
, ias_opt
,
2509 sizeof(struct irda_ias_set
))) {
2514 /* Note : don't need to put optlen, we checked it */
2517 case IRLMP_WAITDEVICE
:
2518 /* This function is just another way of seeing life ;-)
2519 * IRLMP_ENUMDEVICES assumes that you have a static network,
2520 * and that you just want to pick one of the devices present.
2521 * On the other hand, in here we assume that no device is
2522 * present and that at some point in the future a device will
2523 * come into range. When this device arrive, we just wake
2524 * up the caller, so that he has time to connect to it before
2525 * the device goes away...
2526 * Note : once the node has been discovered for more than a
2527 * few second, it won't trigger this function, unless it
2528 * goes away and come back changes its hint bits (so we
2529 * might call it IRLMP_WAITNEWDEVICE).
2532 /* Check that the user is passing us an int */
2533 if (len
!= sizeof(int)) {
2537 /* Get timeout in ms (max time we block the caller) */
2538 if (get_user(val
, (int __user
*)optval
)) {
2543 /* Tell IrLMP we want to be notified */
2544 irlmp_update_client(self
->ckey
, self
->mask
.word
,
2545 irda_selective_discovery_indication
,
2546 NULL
, (void *) self
);
2548 /* Do some discovery (and also return cached results) */
2549 irlmp_discovery_request(self
->nslots
);
2551 /* Wait until a node is discovered */
2552 if (!self
->cachedaddr
) {
2553 IRDA_DEBUG(1, "%s(), nothing discovered yet, going to sleep...\n", __func__
);
2555 /* Set watchdog timer to expire in <val> ms. */
2557 setup_timer(&self
->watchdog
, irda_discovery_timeout
,
2558 (unsigned long)self
);
2559 self
->watchdog
.expires
= jiffies
+ (val
* HZ
/1000);
2560 add_timer(&(self
->watchdog
));
2562 /* Wait for IR-LMP to call us back */
2563 __wait_event_interruptible(self
->query_wait
,
2564 (self
->cachedaddr
!= 0 || self
->errno
== -ETIME
),
2567 /* If watchdog is still activated, kill it! */
2568 if(timer_pending(&(self
->watchdog
)))
2569 del_timer(&(self
->watchdog
));
2571 IRDA_DEBUG(1, "%s(), ...waking up !\n", __func__
);
2577 IRDA_DEBUG(1, "%s(), found immediately !\n",
2580 /* Tell IrLMP that we have been notified */
2581 irlmp_update_client(self
->ckey
, self
->mask
.word
,
2584 /* Check if the we got some results */
2585 if (!self
->cachedaddr
)
2586 return -EAGAIN
; /* Didn't find any devices */
2587 daddr
= self
->cachedaddr
;
2589 self
->cachedaddr
= 0;
2591 /* We return the daddr of the device that trigger the
2592 * wakeup. As irlmp pass us only the new devices, we
2593 * are sure that it's not an old device.
2594 * If the user want more details, he should query
2595 * the whole discovery log and pick one device...
2597 if (put_user(daddr
, (int __user
*)optval
)) {
2614 static const struct net_proto_family irda_family_ops
= {
2616 .create
= irda_create
,
2617 .owner
= THIS_MODULE
,
2620 static const struct proto_ops irda_stream_ops
= {
2622 .owner
= THIS_MODULE
,
2623 .release
= irda_release
,
2625 .connect
= irda_connect
,
2626 .socketpair
= sock_no_socketpair
,
2627 .accept
= irda_accept
,
2628 .getname
= irda_getname
,
2630 .ioctl
= irda_ioctl
,
2631 #ifdef CONFIG_COMPAT
2632 .compat_ioctl
= irda_compat_ioctl
,
2634 .listen
= irda_listen
,
2635 .shutdown
= irda_shutdown
,
2636 .setsockopt
= irda_setsockopt
,
2637 .getsockopt
= irda_getsockopt
,
2638 .sendmsg
= irda_sendmsg
,
2639 .recvmsg
= irda_recvmsg_stream
,
2640 .mmap
= sock_no_mmap
,
2641 .sendpage
= sock_no_sendpage
,
2644 static const struct proto_ops irda_seqpacket_ops
= {
2646 .owner
= THIS_MODULE
,
2647 .release
= irda_release
,
2649 .connect
= irda_connect
,
2650 .socketpair
= sock_no_socketpair
,
2651 .accept
= irda_accept
,
2652 .getname
= irda_getname
,
2653 .poll
= datagram_poll
,
2654 .ioctl
= irda_ioctl
,
2655 #ifdef CONFIG_COMPAT
2656 .compat_ioctl
= irda_compat_ioctl
,
2658 .listen
= irda_listen
,
2659 .shutdown
= irda_shutdown
,
2660 .setsockopt
= irda_setsockopt
,
2661 .getsockopt
= irda_getsockopt
,
2662 .sendmsg
= irda_sendmsg
,
2663 .recvmsg
= irda_recvmsg_dgram
,
2664 .mmap
= sock_no_mmap
,
2665 .sendpage
= sock_no_sendpage
,
2668 static const struct proto_ops irda_dgram_ops
= {
2670 .owner
= THIS_MODULE
,
2671 .release
= irda_release
,
2673 .connect
= irda_connect
,
2674 .socketpair
= sock_no_socketpair
,
2675 .accept
= irda_accept
,
2676 .getname
= irda_getname
,
2677 .poll
= datagram_poll
,
2678 .ioctl
= irda_ioctl
,
2679 #ifdef CONFIG_COMPAT
2680 .compat_ioctl
= irda_compat_ioctl
,
2682 .listen
= irda_listen
,
2683 .shutdown
= irda_shutdown
,
2684 .setsockopt
= irda_setsockopt
,
2685 .getsockopt
= irda_getsockopt
,
2686 .sendmsg
= irda_sendmsg_dgram
,
2687 .recvmsg
= irda_recvmsg_dgram
,
2688 .mmap
= sock_no_mmap
,
2689 .sendpage
= sock_no_sendpage
,
2692 #ifdef CONFIG_IRDA_ULTRA
2693 static const struct proto_ops irda_ultra_ops
= {
2695 .owner
= THIS_MODULE
,
2696 .release
= irda_release
,
2698 .connect
= sock_no_connect
,
2699 .socketpair
= sock_no_socketpair
,
2700 .accept
= sock_no_accept
,
2701 .getname
= irda_getname
,
2702 .poll
= datagram_poll
,
2703 .ioctl
= irda_ioctl
,
2704 #ifdef CONFIG_COMPAT
2705 .compat_ioctl
= irda_compat_ioctl
,
2707 .listen
= sock_no_listen
,
2708 .shutdown
= irda_shutdown
,
2709 .setsockopt
= irda_setsockopt
,
2710 .getsockopt
= irda_getsockopt
,
2711 .sendmsg
= irda_sendmsg_ultra
,
2712 .recvmsg
= irda_recvmsg_dgram
,
2713 .mmap
= sock_no_mmap
,
2714 .sendpage
= sock_no_sendpage
,
2716 #endif /* CONFIG_IRDA_ULTRA */
2719 * Function irsock_init (pro)
2721 * Initialize IrDA protocol
2724 int __init
irsock_init(void)
2726 int rc
= proto_register(&irda_proto
, 0);
2729 rc
= sock_register(&irda_family_ops
);
2735 * Function irsock_cleanup (void)
2737 * Remove IrDA protocol
2740 void irsock_cleanup(void)
2742 sock_unregister(PF_IRDA
);
2743 proto_unregister(&irda_proto
);