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, see <http://www.gnu.org/licenses/>.
30 * Linux-IrDA now supports four different types of IrDA sockets:
32 * o SOCK_STREAM: TinyTP connections with SAR disabled. The
33 * max SDU size is 0 for conn. of this type
34 * o SOCK_SEQPACKET: TinyTP connections with SAR enabled. TTP may
35 * fragment the messages, but will preserve
36 * the message boundaries
37 * o SOCK_DGRAM: IRDAPROTO_UNITDATA: TinyTP connections with Unitdata
38 * (unreliable) transfers
39 * IRDAPROTO_ULTRA: Connectionless and unreliable data
41 ********************************************************************/
43 #include <linux/capability.h>
44 #include <linux/module.h>
45 #include <linux/types.h>
46 #include <linux/socket.h>
47 #include <linux/sockios.h>
48 #include <linux/slab.h>
49 #include <linux/init.h>
50 #include <linux/net.h>
51 #include <linux/irda.h>
52 #include <linux/poll.h>
54 #include <asm/ioctls.h> /* TIOCOUTQ, TIOCINQ */
55 #include <asm/uaccess.h>
58 #include <net/tcp_states.h>
60 #include <net/irda/af_irda.h>
62 static int irda_create(struct net
*net
, struct socket
*sock
, int protocol
, int kern
);
64 static const struct proto_ops irda_stream_ops
;
65 static const struct proto_ops irda_seqpacket_ops
;
66 static const struct proto_ops irda_dgram_ops
;
68 #ifdef CONFIG_IRDA_ULTRA
69 static const struct proto_ops irda_ultra_ops
;
70 #define ULTRA_MAX_DATA 382
71 #endif /* CONFIG_IRDA_ULTRA */
73 #define IRDA_MAX_HEADER (TTP_MAX_HEADER)
76 * Function irda_data_indication (instance, sap, skb)
78 * Received some data from TinyTP. Just queue it on the receive queue
81 static int irda_data_indication(void *instance
, void *sap
, struct sk_buff
*skb
)
83 struct irda_sock
*self
;
87 IRDA_DEBUG(3, "%s()\n", __func__
);
92 err
= sock_queue_rcv_skb(sk
, skb
);
94 IRDA_DEBUG(1, "%s(), error: no more mem!\n", __func__
);
95 self
->rx_flow
= FLOW_STOP
;
97 /* When we return error, TTP will need to requeue the skb */
105 * Function irda_disconnect_indication (instance, sap, reason, skb)
107 * Connection has been closed. Check reason to find out why
110 static void irda_disconnect_indication(void *instance
, void *sap
,
111 LM_REASON reason
, struct sk_buff
*skb
)
113 struct irda_sock
*self
;
118 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
120 /* Don't care about it, but let's not leak it */
126 IRDA_DEBUG(0, "%s(%p) : BUG : sk is NULL\n",
131 /* Prevent race conditions with irda_release() and irda_shutdown() */
133 if (!sock_flag(sk
, SOCK_DEAD
) && sk
->sk_state
!= TCP_CLOSE
) {
134 sk
->sk_state
= TCP_CLOSE
;
135 sk
->sk_shutdown
|= SEND_SHUTDOWN
;
137 sk
->sk_state_change(sk
);
140 * If we leave it open, IrLMP put it back into the list of
141 * unconnected LSAPs. The problem is that any incoming request
142 * can then be matched to this socket (and it will be, because
143 * it is at the head of the list). This would prevent any
144 * listening socket waiting on the same TSAP to get those
145 * requests. Some apps forget to close sockets, or hang to it
146 * a bit too long, so we may stay in this dead state long
147 * enough to be noticed...
148 * Note : all socket function do check sk->sk_state, so we are
153 irttp_close_tsap(self
->tsap
);
159 /* Note : once we are there, there is not much you want to do
160 * with the socket anymore, apart from closing it.
161 * For example, bind() and connect() won't reset sk->sk_err,
162 * sk->sk_shutdown and sk->sk_flags to valid values...
168 * Function irda_connect_confirm (instance, sap, qos, max_sdu_size, skb)
170 * Connections has been confirmed by the remote device
173 static void irda_connect_confirm(void *instance
, void *sap
,
174 struct qos_info
*qos
,
175 __u32 max_sdu_size
, __u8 max_header_size
,
178 struct irda_sock
*self
;
183 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
192 // Should be ??? skb_queue_tail(&sk->sk_receive_queue, skb);
194 /* How much header space do we need to reserve */
195 self
->max_header_size
= max_header_size
;
197 /* IrTTP max SDU size in transmit direction */
198 self
->max_sdu_size_tx
= max_sdu_size
;
200 /* Find out what the largest chunk of data that we can transmit is */
201 switch (sk
->sk_type
) {
203 if (max_sdu_size
!= 0) {
204 IRDA_ERROR("%s: max_sdu_size must be 0\n",
208 self
->max_data_size
= irttp_get_max_seg_size(self
->tsap
);
211 if (max_sdu_size
== 0) {
212 IRDA_ERROR("%s: max_sdu_size cannot be 0\n",
216 self
->max_data_size
= max_sdu_size
;
219 self
->max_data_size
= irttp_get_max_seg_size(self
->tsap
);
222 IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __func__
,
223 self
->max_data_size
);
225 memcpy(&self
->qos_tx
, qos
, sizeof(struct qos_info
));
227 /* We are now connected! */
228 sk
->sk_state
= TCP_ESTABLISHED
;
229 sk
->sk_state_change(sk
);
233 * Function irda_connect_indication(instance, sap, qos, max_sdu_size, userdata)
235 * Incoming connection
238 static void irda_connect_indication(void *instance
, void *sap
,
239 struct qos_info
*qos
, __u32 max_sdu_size
,
240 __u8 max_header_size
, struct sk_buff
*skb
)
242 struct irda_sock
*self
;
247 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
255 /* How much header space do we need to reserve */
256 self
->max_header_size
= max_header_size
;
258 /* IrTTP max SDU size in transmit direction */
259 self
->max_sdu_size_tx
= max_sdu_size
;
261 /* Find out what the largest chunk of data that we can transmit is */
262 switch (sk
->sk_type
) {
264 if (max_sdu_size
!= 0) {
265 IRDA_ERROR("%s: max_sdu_size must be 0\n",
270 self
->max_data_size
= irttp_get_max_seg_size(self
->tsap
);
273 if (max_sdu_size
== 0) {
274 IRDA_ERROR("%s: max_sdu_size cannot be 0\n",
279 self
->max_data_size
= max_sdu_size
;
282 self
->max_data_size
= irttp_get_max_seg_size(self
->tsap
);
285 IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __func__
,
286 self
->max_data_size
);
288 memcpy(&self
->qos_tx
, qos
, sizeof(struct qos_info
));
290 skb_queue_tail(&sk
->sk_receive_queue
, skb
);
291 sk
->sk_state_change(sk
);
295 * Function irda_connect_response (handle)
297 * Accept incoming connection
300 static void irda_connect_response(struct irda_sock
*self
)
304 IRDA_DEBUG(2, "%s()\n", __func__
);
306 skb
= alloc_skb(TTP_MAX_HEADER
+ TTP_SAR_HEADER
, GFP_KERNEL
);
308 IRDA_DEBUG(0, "%s() Unable to allocate sk_buff!\n",
313 /* Reserve space for MUX_CONTROL and LAP header */
314 skb_reserve(skb
, IRDA_MAX_HEADER
);
316 irttp_connect_response(self
->tsap
, self
->max_sdu_size_rx
, skb
);
320 * Function irda_flow_indication (instance, sap, flow)
322 * Used by TinyTP to tell us if it can accept more data or not
325 static void irda_flow_indication(void *instance
, void *sap
, LOCAL_FLOW flow
)
327 struct irda_sock
*self
;
330 IRDA_DEBUG(2, "%s()\n", __func__
);
338 IRDA_DEBUG(1, "%s(), IrTTP wants us to slow down\n",
340 self
->tx_flow
= flow
;
343 self
->tx_flow
= flow
;
344 IRDA_DEBUG(1, "%s(), IrTTP wants us to start again\n",
346 wake_up_interruptible(sk_sleep(sk
));
349 IRDA_DEBUG(0, "%s(), Unknown flow command!\n", __func__
);
350 /* Unknown flow command, better stop */
351 self
->tx_flow
= flow
;
357 * Function irda_getvalue_confirm (obj_id, value, priv)
359 * Got answer from remote LM-IAS, just pass object to requester...
361 * Note : duplicate from above, but we need our own version that
362 * doesn't touch the dtsap_sel and save the full value structure...
364 static void irda_getvalue_confirm(int result
, __u16 obj_id
,
365 struct ias_value
*value
, void *priv
)
367 struct irda_sock
*self
;
371 IRDA_WARNING("%s: lost myself!\n", __func__
);
375 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
377 /* We probably don't need to make any more queries */
378 iriap_close(self
->iriap
);
381 /* Check if request succeeded */
382 if (result
!= IAS_SUCCESS
) {
383 IRDA_DEBUG(1, "%s(), IAS query failed! (%d)\n", __func__
,
386 self
->errno
= result
; /* We really need it later */
388 /* Wake up any processes waiting for result */
389 wake_up_interruptible(&self
->query_wait
);
394 /* Pass the object to the caller (so the caller must delete it) */
395 self
->ias_result
= value
;
398 /* Wake up any processes waiting for result */
399 wake_up_interruptible(&self
->query_wait
);
403 * Function irda_selective_discovery_indication (discovery)
405 * Got a selective discovery indication from IrLMP.
407 * IrLMP is telling us that this node is new and matching our hint bit
408 * filter. Wake up any process waiting for answer...
410 static void irda_selective_discovery_indication(discinfo_t
*discovery
,
414 struct irda_sock
*self
;
416 IRDA_DEBUG(2, "%s()\n", __func__
);
420 IRDA_WARNING("%s: lost myself!\n", __func__
);
424 /* Pass parameter to the caller */
425 self
->cachedaddr
= discovery
->daddr
;
427 /* Wake up process if its waiting for device to be discovered */
428 wake_up_interruptible(&self
->query_wait
);
432 * Function irda_discovery_timeout (priv)
434 * Timeout in the selective discovery process
436 * We were waiting for a node to be discovered, but nothing has come up
437 * so far. Wake up the user and tell him that we failed...
439 static void irda_discovery_timeout(u_long priv
)
441 struct irda_sock
*self
;
443 IRDA_DEBUG(2, "%s()\n", __func__
);
445 self
= (struct irda_sock
*) priv
;
446 BUG_ON(self
== NULL
);
448 /* Nothing for the caller */
449 self
->cachelog
= NULL
;
450 self
->cachedaddr
= 0;
451 self
->errno
= -ETIME
;
453 /* Wake up process if its still waiting... */
454 wake_up_interruptible(&self
->query_wait
);
458 * Function irda_open_tsap (self)
460 * Open local Transport Service Access Point (TSAP)
463 static int irda_open_tsap(struct irda_sock
*self
, __u8 tsap_sel
, char *name
)
468 IRDA_DEBUG(0, "%s: busy!\n", __func__
);
472 /* Initialize callbacks to be used by the IrDA stack */
473 irda_notify_init(¬ify
);
474 notify
.connect_confirm
= irda_connect_confirm
;
475 notify
.connect_indication
= irda_connect_indication
;
476 notify
.disconnect_indication
= irda_disconnect_indication
;
477 notify
.data_indication
= irda_data_indication
;
478 notify
.udata_indication
= irda_data_indication
;
479 notify
.flow_indication
= irda_flow_indication
;
480 notify
.instance
= self
;
481 strncpy(notify
.name
, name
, NOTIFY_MAX_NAME
);
483 self
->tsap
= irttp_open_tsap(tsap_sel
, DEFAULT_INITIAL_CREDIT
,
485 if (self
->tsap
== NULL
) {
486 IRDA_DEBUG(0, "%s(), Unable to allocate TSAP!\n",
490 /* Remember which TSAP selector we actually got */
491 self
->stsap_sel
= self
->tsap
->stsap_sel
;
497 * Function irda_open_lsap (self)
499 * Open local Link Service Access Point (LSAP). Used for opening Ultra
502 #ifdef CONFIG_IRDA_ULTRA
503 static int irda_open_lsap(struct irda_sock
*self
, int pid
)
508 IRDA_WARNING("%s(), busy!\n", __func__
);
512 /* Initialize callbacks to be used by the IrDA stack */
513 irda_notify_init(¬ify
);
514 notify
.udata_indication
= irda_data_indication
;
515 notify
.instance
= self
;
516 strncpy(notify
.name
, "Ultra", NOTIFY_MAX_NAME
);
518 self
->lsap
= irlmp_open_lsap(LSAP_CONNLESS
, ¬ify
, pid
);
519 if (self
->lsap
== NULL
) {
520 IRDA_DEBUG( 0, "%s(), Unable to allocate LSAP!\n", __func__
);
526 #endif /* CONFIG_IRDA_ULTRA */
529 * Function irda_find_lsap_sel (self, name)
531 * Try to lookup LSAP selector in remote LM-IAS
533 * Basically, we start a IAP query, and then go to sleep. When the query
534 * return, irda_getvalue_confirm will wake us up, and we can examine the
535 * result of the query...
536 * Note that in some case, the query fail even before we go to sleep,
537 * creating some races...
539 static int irda_find_lsap_sel(struct irda_sock
*self
, char *name
)
541 IRDA_DEBUG(2, "%s(%p, %s)\n", __func__
, self
, name
);
544 IRDA_WARNING("%s(): busy with a previous query\n",
549 self
->iriap
= iriap_open(LSAP_ANY
, IAS_CLIENT
, self
,
550 irda_getvalue_confirm
);
551 if(self
->iriap
== NULL
)
554 /* Treat unexpected wakeup as disconnect */
555 self
->errno
= -EHOSTUNREACH
;
557 /* Query remote LM-IAS */
558 iriap_getvaluebyclass_request(self
->iriap
, self
->saddr
, self
->daddr
,
559 name
, "IrDA:TinyTP:LsapSel");
561 /* Wait for answer, if not yet finished (or failed) */
562 if (wait_event_interruptible(self
->query_wait
, (self
->iriap
==NULL
)))
563 /* Treat signals as disconnect */
564 return -EHOSTUNREACH
;
566 /* Check what happened */
569 /* Requested object/attribute doesn't exist */
570 if((self
->errno
== IAS_CLASS_UNKNOWN
) ||
571 (self
->errno
== IAS_ATTRIB_UNKNOWN
))
572 return -EADDRNOTAVAIL
;
574 return -EHOSTUNREACH
;
577 /* Get the remote TSAP selector */
578 switch (self
->ias_result
->type
) {
580 IRDA_DEBUG(4, "%s() int=%d\n",
581 __func__
, self
->ias_result
->t
.integer
);
583 if (self
->ias_result
->t
.integer
!= -1)
584 self
->dtsap_sel
= self
->ias_result
->t
.integer
;
590 IRDA_DEBUG(0, "%s(), bad type!\n", __func__
);
593 if (self
->ias_result
)
594 irias_delete_value(self
->ias_result
);
599 return -EADDRNOTAVAIL
;
603 * Function irda_discover_daddr_and_lsap_sel (self, name)
605 * This try to find a device with the requested service.
607 * It basically look into the discovery log. For each address in the list,
608 * it queries the LM-IAS of the device to find if this device offer
609 * the requested service.
610 * If there is more than one node supporting the service, we complain
611 * to the user (it should move devices around).
612 * The, we set both the destination address and the lsap selector to point
613 * on the service on the unique device we have found.
615 * Note : this function fails if there is more than one device in range,
616 * because IrLMP doesn't disconnect the LAP when the last LSAP is closed.
617 * Moreover, we would need to wait the LAP disconnection...
619 static int irda_discover_daddr_and_lsap_sel(struct irda_sock
*self
, char *name
)
621 discinfo_t
*discoveries
; /* Copy of the discovery log */
622 int number
; /* Number of nodes in the log */
624 int err
= -ENETUNREACH
;
625 __u32 daddr
= DEV_ADDR_ANY
; /* Address we found the service on */
626 __u8 dtsap_sel
= 0x0; /* TSAP associated with it */
628 IRDA_DEBUG(2, "%s(), name=%s\n", __func__
, name
);
630 /* Ask lmp for the current discovery log
631 * Note : we have to use irlmp_get_discoveries(), as opposed
632 * to play with the cachelog directly, because while we are
633 * making our ias query, le log might change... */
634 discoveries
= irlmp_get_discoveries(&number
, self
->mask
.word
,
636 /* Check if the we got some results */
637 if (discoveries
== NULL
)
638 return -ENETUNREACH
; /* No nodes discovered */
641 * Now, check all discovered devices (if any), and connect
642 * client only about the services that the client is
645 for(i
= 0; i
< number
; i
++) {
646 /* Try the address in the log */
647 self
->daddr
= discoveries
[i
].daddr
;
649 IRDA_DEBUG(1, "%s(), trying daddr = %08x\n",
650 __func__
, self
->daddr
);
652 /* Query remote LM-IAS for this service */
653 err
= irda_find_lsap_sel(self
, name
);
656 /* We found the requested service */
657 if(daddr
!= DEV_ADDR_ANY
) {
658 IRDA_DEBUG(1, "%s(), discovered service ''%s'' in two different devices !!!\n",
660 self
->daddr
= DEV_ADDR_ANY
;
664 /* First time we found that one, save it ! */
666 dtsap_sel
= self
->dtsap_sel
;
669 /* Requested service simply doesn't exist on this node */
672 /* Something bad did happen :-( */
673 IRDA_DEBUG(0, "%s(), unexpected IAS query failure\n", __func__
);
674 self
->daddr
= DEV_ADDR_ANY
;
676 return -EHOSTUNREACH
;
679 /* Cleanup our copy of the discovery log */
682 /* Check out what we found */
683 if(daddr
== DEV_ADDR_ANY
) {
684 IRDA_DEBUG(1, "%s(), cannot discover service ''%s'' in any device !!!\n",
686 self
->daddr
= DEV_ADDR_ANY
;
687 return -EADDRNOTAVAIL
;
690 /* Revert back to discovered device & service */
693 self
->dtsap_sel
= dtsap_sel
;
695 IRDA_DEBUG(1, "%s(), discovered requested service ''%s'' at address %08x\n",
696 __func__
, name
, self
->daddr
);
702 * Function irda_getname (sock, uaddr, uaddr_len, peer)
704 * Return the our own, or peers socket address (sockaddr_irda)
707 static int irda_getname(struct socket
*sock
, struct sockaddr
*uaddr
,
708 int *uaddr_len
, int peer
)
710 struct sockaddr_irda saddr
;
711 struct sock
*sk
= sock
->sk
;
712 struct irda_sock
*self
= irda_sk(sk
);
714 memset(&saddr
, 0, sizeof(saddr
));
716 if (sk
->sk_state
!= TCP_ESTABLISHED
)
719 saddr
.sir_family
= AF_IRDA
;
720 saddr
.sir_lsap_sel
= self
->dtsap_sel
;
721 saddr
.sir_addr
= self
->daddr
;
723 saddr
.sir_family
= AF_IRDA
;
724 saddr
.sir_lsap_sel
= self
->stsap_sel
;
725 saddr
.sir_addr
= self
->saddr
;
728 IRDA_DEBUG(1, "%s(), tsap_sel = %#x\n", __func__
, saddr
.sir_lsap_sel
);
729 IRDA_DEBUG(1, "%s(), addr = %08x\n", __func__
, saddr
.sir_addr
);
731 /* uaddr_len come to us uninitialised */
732 *uaddr_len
= sizeof (struct sockaddr_irda
);
733 memcpy(uaddr
, &saddr
, *uaddr_len
);
739 * Function irda_listen (sock, backlog)
741 * Just move to the listen state
744 static int irda_listen(struct socket
*sock
, int backlog
)
746 struct sock
*sk
= sock
->sk
;
747 int err
= -EOPNOTSUPP
;
749 IRDA_DEBUG(2, "%s()\n", __func__
);
753 if ((sk
->sk_type
!= SOCK_STREAM
) && (sk
->sk_type
!= SOCK_SEQPACKET
) &&
754 (sk
->sk_type
!= SOCK_DGRAM
))
757 if (sk
->sk_state
!= TCP_LISTEN
) {
758 sk
->sk_max_ack_backlog
= backlog
;
759 sk
->sk_state
= TCP_LISTEN
;
770 * Function irda_bind (sock, uaddr, addr_len)
772 * Used by servers to register their well known TSAP
775 static int irda_bind(struct socket
*sock
, struct sockaddr
*uaddr
, int addr_len
)
777 struct sock
*sk
= sock
->sk
;
778 struct sockaddr_irda
*addr
= (struct sockaddr_irda
*) uaddr
;
779 struct irda_sock
*self
= irda_sk(sk
);
782 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
784 if (addr_len
!= sizeof(struct sockaddr_irda
))
788 #ifdef CONFIG_IRDA_ULTRA
789 /* Special care for Ultra sockets */
790 if ((sk
->sk_type
== SOCK_DGRAM
) &&
791 (sk
->sk_protocol
== IRDAPROTO_ULTRA
)) {
792 self
->pid
= addr
->sir_lsap_sel
;
794 if (self
->pid
& 0x80) {
795 IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __func__
);
798 err
= irda_open_lsap(self
, self
->pid
);
802 /* Pretend we are connected */
803 sock
->state
= SS_CONNECTED
;
804 sk
->sk_state
= TCP_ESTABLISHED
;
809 #endif /* CONFIG_IRDA_ULTRA */
811 self
->ias_obj
= irias_new_object(addr
->sir_name
, jiffies
);
813 if (self
->ias_obj
== NULL
)
816 err
= irda_open_tsap(self
, addr
->sir_lsap_sel
, addr
->sir_name
);
818 irias_delete_object(self
->ias_obj
);
819 self
->ias_obj
= NULL
;
823 /* Register with LM-IAS */
824 irias_add_integer_attrib(self
->ias_obj
, "IrDA:TinyTP:LsapSel",
825 self
->stsap_sel
, IAS_KERNEL_ATTR
);
826 irias_insert_object(self
->ias_obj
);
835 * Function irda_accept (sock, newsock, flags)
837 * Wait for incoming connection
840 static int irda_accept(struct socket
*sock
, struct socket
*newsock
, int flags
)
842 struct sock
*sk
= sock
->sk
;
843 struct irda_sock
*new, *self
= irda_sk(sk
);
848 IRDA_DEBUG(2, "%s()\n", __func__
);
850 err
= irda_create(sock_net(sk
), newsock
, sk
->sk_protocol
, 0);
857 if (sock
->state
!= SS_UNCONNECTED
)
860 if ((sk
= sock
->sk
) == NULL
)
864 if ((sk
->sk_type
!= SOCK_STREAM
) && (sk
->sk_type
!= SOCK_SEQPACKET
) &&
865 (sk
->sk_type
!= SOCK_DGRAM
))
869 if (sk
->sk_state
!= TCP_LISTEN
)
873 * The read queue this time is holding sockets ready to use
874 * hooked into the SABM we saved
878 * We can perform the accept only if there is incoming data
879 * on the listening socket.
880 * So, we will block the caller until we receive any data.
881 * If the caller was waiting on select() or poll() before
882 * calling us, the data is waiting for us ;-)
886 skb
= skb_dequeue(&sk
->sk_receive_queue
);
890 /* Non blocking operation */
892 if (flags
& O_NONBLOCK
)
895 err
= wait_event_interruptible(*(sk_sleep(sk
)),
896 skb_peek(&sk
->sk_receive_queue
));
906 newsk
->sk_state
= TCP_ESTABLISHED
;
908 new = irda_sk(newsk
);
910 /* Now attach up the new socket */
911 new->tsap
= irttp_dup(self
->tsap
, new);
912 err
= -EPERM
; /* value does not seem to make sense. -arnd */
914 IRDA_DEBUG(0, "%s(), dup failed!\n", __func__
);
919 new->stsap_sel
= new->tsap
->stsap_sel
;
920 new->dtsap_sel
= new->tsap
->dtsap_sel
;
921 new->saddr
= irttp_get_saddr(new->tsap
);
922 new->daddr
= irttp_get_daddr(new->tsap
);
924 new->max_sdu_size_tx
= self
->max_sdu_size_tx
;
925 new->max_sdu_size_rx
= self
->max_sdu_size_rx
;
926 new->max_data_size
= self
->max_data_size
;
927 new->max_header_size
= self
->max_header_size
;
929 memcpy(&new->qos_tx
, &self
->qos_tx
, sizeof(struct qos_info
));
931 /* Clean up the original one to keep it in listen state */
932 irttp_listen(self
->tsap
);
935 sk
->sk_ack_backlog
--;
937 newsock
->state
= SS_CONNECTED
;
939 irda_connect_response(new);
947 * Function irda_connect (sock, uaddr, addr_len, flags)
949 * Connect to a IrDA device
951 * The main difference with a "standard" connect is that with IrDA we need
952 * to resolve the service name into a TSAP selector (in TCP, port number
953 * doesn't have to be resolved).
954 * Because of this service name resolution, we can offer "auto-connect",
955 * where we connect to a service without specifying a destination address.
957 * Note : by consulting "errno", the user space caller may learn the cause
958 * of the failure. Most of them are visible in the function, others may come
959 * from subroutines called and are listed here :
960 * o EBUSY : already processing a connect
961 * o EHOSTUNREACH : bad addr->sir_addr argument
962 * o EADDRNOTAVAIL : bad addr->sir_name argument
963 * o ENOTUNIQ : more than one node has addr->sir_name (auto-connect)
964 * o ENETUNREACH : no node found on the network (auto-connect)
966 static int irda_connect(struct socket
*sock
, struct sockaddr
*uaddr
,
967 int addr_len
, int flags
)
969 struct sock
*sk
= sock
->sk
;
970 struct sockaddr_irda
*addr
= (struct sockaddr_irda
*) uaddr
;
971 struct irda_sock
*self
= irda_sk(sk
);
974 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
977 /* Don't allow connect for Ultra sockets */
978 err
= -ESOCKTNOSUPPORT
;
979 if ((sk
->sk_type
== SOCK_DGRAM
) && (sk
->sk_protocol
== IRDAPROTO_ULTRA
))
982 if (sk
->sk_state
== TCP_ESTABLISHED
&& sock
->state
== SS_CONNECTING
) {
983 sock
->state
= SS_CONNECTED
;
985 goto out
; /* Connect completed during a ERESTARTSYS event */
988 if (sk
->sk_state
== TCP_CLOSE
&& sock
->state
== SS_CONNECTING
) {
989 sock
->state
= SS_UNCONNECTED
;
994 err
= -EISCONN
; /* No reconnect on a seqpacket socket */
995 if (sk
->sk_state
== TCP_ESTABLISHED
)
998 sk
->sk_state
= TCP_CLOSE
;
999 sock
->state
= SS_UNCONNECTED
;
1002 if (addr_len
!= sizeof(struct sockaddr_irda
))
1005 /* Check if user supplied any destination device address */
1006 if ((!addr
->sir_addr
) || (addr
->sir_addr
== DEV_ADDR_ANY
)) {
1007 /* Try to find one suitable */
1008 err
= irda_discover_daddr_and_lsap_sel(self
, addr
->sir_name
);
1010 IRDA_DEBUG(0, "%s(), auto-connect failed!\n", __func__
);
1014 /* Use the one provided by the user */
1015 self
->daddr
= addr
->sir_addr
;
1016 IRDA_DEBUG(1, "%s(), daddr = %08x\n", __func__
, self
->daddr
);
1018 /* If we don't have a valid service name, we assume the
1019 * user want to connect on a specific LSAP. Prevent
1020 * the use of invalid LSAPs (IrLMP 1.1 p10). Jean II */
1021 if((addr
->sir_name
[0] != '\0') ||
1022 (addr
->sir_lsap_sel
>= 0x70)) {
1023 /* Query remote LM-IAS using service name */
1024 err
= irda_find_lsap_sel(self
, addr
->sir_name
);
1026 IRDA_DEBUG(0, "%s(), connect failed!\n", __func__
);
1030 /* Directly connect to the remote LSAP
1031 * specified by the sir_lsap field.
1032 * Please use with caution, in IrDA LSAPs are
1033 * dynamic and there is no "well-known" LSAP. */
1034 self
->dtsap_sel
= addr
->sir_lsap_sel
;
1038 /* Check if we have opened a local TSAP */
1040 irda_open_tsap(self
, LSAP_ANY
, addr
->sir_name
);
1042 /* Move to connecting socket, start sending Connect Requests */
1043 sock
->state
= SS_CONNECTING
;
1044 sk
->sk_state
= TCP_SYN_SENT
;
1046 /* Connect to remote device */
1047 err
= irttp_connect_request(self
->tsap
, self
->dtsap_sel
,
1048 self
->saddr
, self
->daddr
, NULL
,
1049 self
->max_sdu_size_rx
, NULL
);
1051 IRDA_DEBUG(0, "%s(), connect failed!\n", __func__
);
1057 if (sk
->sk_state
!= TCP_ESTABLISHED
&& (flags
& O_NONBLOCK
))
1061 if (wait_event_interruptible(*(sk_sleep(sk
)),
1062 (sk
->sk_state
!= TCP_SYN_SENT
)))
1065 if (sk
->sk_state
!= TCP_ESTABLISHED
) {
1066 sock
->state
= SS_UNCONNECTED
;
1067 err
= sock_error(sk
);
1073 sock
->state
= SS_CONNECTED
;
1075 /* At this point, IrLMP has assigned our source address */
1076 self
->saddr
= irttp_get_saddr(self
->tsap
);
1083 static struct proto irda_proto
= {
1085 .owner
= THIS_MODULE
,
1086 .obj_size
= sizeof(struct irda_sock
),
1090 * Function irda_create (sock, protocol)
1092 * Create IrDA socket
1095 static int irda_create(struct net
*net
, struct socket
*sock
, int protocol
,
1099 struct irda_sock
*self
;
1101 IRDA_DEBUG(2, "%s()\n", __func__
);
1103 if (net
!= &init_net
)
1104 return -EAFNOSUPPORT
;
1106 /* Check for valid socket type */
1107 switch (sock
->type
) {
1108 case SOCK_STREAM
: /* For TTP connections with SAR disabled */
1109 case SOCK_SEQPACKET
: /* For TTP connections with SAR enabled */
1110 case SOCK_DGRAM
: /* For TTP Unitdata or LMP Ultra transfers */
1113 return -ESOCKTNOSUPPORT
;
1116 /* Allocate networking socket */
1117 sk
= sk_alloc(net
, PF_IRDA
, GFP_KERNEL
, &irda_proto
);
1122 IRDA_DEBUG(2, "%s() : self is %p\n", __func__
, self
);
1124 init_waitqueue_head(&self
->query_wait
);
1126 switch (sock
->type
) {
1128 sock
->ops
= &irda_stream_ops
;
1129 self
->max_sdu_size_rx
= TTP_SAR_DISABLE
;
1131 case SOCK_SEQPACKET
:
1132 sock
->ops
= &irda_seqpacket_ops
;
1133 self
->max_sdu_size_rx
= TTP_SAR_UNBOUND
;
1137 #ifdef CONFIG_IRDA_ULTRA
1138 case IRDAPROTO_ULTRA
:
1139 sock
->ops
= &irda_ultra_ops
;
1140 /* Initialise now, because we may send on unbound
1141 * sockets. Jean II */
1142 self
->max_data_size
= ULTRA_MAX_DATA
- LMP_PID_HEADER
;
1143 self
->max_header_size
= IRDA_MAX_HEADER
+ LMP_PID_HEADER
;
1145 #endif /* CONFIG_IRDA_ULTRA */
1146 case IRDAPROTO_UNITDATA
:
1147 sock
->ops
= &irda_dgram_ops
;
1148 /* We let Unitdata conn. be like seqpack conn. */
1149 self
->max_sdu_size_rx
= TTP_SAR_UNBOUND
;
1153 return -ESOCKTNOSUPPORT
;
1158 return -ESOCKTNOSUPPORT
;
1161 /* Initialise networking socket struct */
1162 sock_init_data(sock
, sk
); /* Note : set sk->sk_refcnt to 1 */
1163 sk
->sk_family
= PF_IRDA
;
1164 sk
->sk_protocol
= protocol
;
1166 /* Register as a client with IrLMP */
1167 self
->ckey
= irlmp_register_client(0, NULL
, NULL
, NULL
);
1168 self
->mask
.word
= 0xffff;
1169 self
->rx_flow
= self
->tx_flow
= FLOW_START
;
1170 self
->nslots
= DISCOVERY_DEFAULT_SLOTS
;
1171 self
->daddr
= DEV_ADDR_ANY
; /* Until we get connected */
1172 self
->saddr
= 0x0; /* so IrLMP assign us any link */
1177 * Function irda_destroy_socket (self)
1182 static void irda_destroy_socket(struct irda_sock
*self
)
1184 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
1186 /* Unregister with IrLMP */
1187 irlmp_unregister_client(self
->ckey
);
1188 irlmp_unregister_service(self
->skey
);
1190 /* Unregister with LM-IAS */
1191 if (self
->ias_obj
) {
1192 irias_delete_object(self
->ias_obj
);
1193 self
->ias_obj
= NULL
;
1197 iriap_close(self
->iriap
);
1202 irttp_disconnect_request(self
->tsap
, NULL
, P_NORMAL
);
1203 irttp_close_tsap(self
->tsap
);
1206 #ifdef CONFIG_IRDA_ULTRA
1208 irlmp_close_lsap(self
->lsap
);
1211 #endif /* CONFIG_IRDA_ULTRA */
1215 * Function irda_release (sock)
1217 static int irda_release(struct socket
*sock
)
1219 struct sock
*sk
= sock
->sk
;
1221 IRDA_DEBUG(2, "%s()\n", __func__
);
1227 sk
->sk_state
= TCP_CLOSE
;
1228 sk
->sk_shutdown
|= SEND_SHUTDOWN
;
1229 sk
->sk_state_change(sk
);
1231 /* Destroy IrDA socket */
1232 irda_destroy_socket(irda_sk(sk
));
1238 /* Purge queues (see sock_init_data()) */
1239 skb_queue_purge(&sk
->sk_receive_queue
);
1241 /* Destroy networking socket if we are the last reference on it,
1242 * i.e. if(sk->sk_refcnt == 0) -> sk_free(sk) */
1245 /* Notes on socket locking and deallocation... - Jean II
1246 * In theory we should put pairs of sock_hold() / sock_put() to
1247 * prevent the socket to be destroyed whenever there is an
1248 * outstanding request or outstanding incoming packet or event.
1250 * 1) This may include IAS request, both in connect and getsockopt.
1251 * Unfortunately, the situation is a bit more messy than it looks,
1252 * because we close iriap and kfree(self) above.
1254 * 2) This may include selective discovery in getsockopt.
1255 * Same stuff as above, irlmp registration and self are gone.
1257 * Probably 1 and 2 may not matter, because it's all triggered
1258 * by a process and the socket layer already prevent the
1259 * socket to go away while a process is holding it, through
1260 * sockfd_put() and fput()...
1262 * 3) This may include deferred TSAP closure. In particular,
1263 * we may receive a late irda_disconnect_indication()
1264 * Fortunately, (tsap_cb *)->close_pend should protect us
1267 * I did some testing on SMP, and it looks solid. And the socket
1268 * memory leak is now gone... - Jean II
1275 * Function irda_sendmsg (iocb, sock, msg, len)
1277 * Send message down to TinyTP. This function is used for both STREAM and
1278 * SEQPACK services. This is possible since it forces the client to
1279 * fragment the message if necessary
1281 static int irda_sendmsg(struct kiocb
*iocb
, struct socket
*sock
,
1282 struct msghdr
*msg
, size_t len
)
1284 struct sock
*sk
= sock
->sk
;
1285 struct irda_sock
*self
;
1286 struct sk_buff
*skb
;
1289 IRDA_DEBUG(4, "%s(), len=%zd\n", __func__
, len
);
1291 /* Note : socket.c set MSG_EOR on SEQPACKET sockets */
1292 if (msg
->msg_flags
& ~(MSG_DONTWAIT
| MSG_EOR
| MSG_CMSG_COMPAT
|
1299 if (sk
->sk_shutdown
& SEND_SHUTDOWN
)
1302 if (sk
->sk_state
!= TCP_ESTABLISHED
) {
1309 /* Check if IrTTP is wants us to slow down */
1311 if (wait_event_interruptible(*(sk_sleep(sk
)),
1312 (self
->tx_flow
!= FLOW_STOP
|| sk
->sk_state
!= TCP_ESTABLISHED
))) {
1317 /* Check if we are still connected */
1318 if (sk
->sk_state
!= TCP_ESTABLISHED
) {
1323 /* Check that we don't send out too big frames */
1324 if (len
> self
->max_data_size
) {
1325 IRDA_DEBUG(2, "%s(), Chopping frame from %zd to %d bytes!\n",
1326 __func__
, len
, self
->max_data_size
);
1327 len
= self
->max_data_size
;
1330 skb
= sock_alloc_send_skb(sk
, len
+ self
->max_header_size
+ 16,
1331 msg
->msg_flags
& MSG_DONTWAIT
, &err
);
1335 skb_reserve(skb
, self
->max_header_size
+ 16);
1336 skb_reset_transport_header(skb
);
1338 err
= memcpy_fromiovec(skb_transport_header(skb
), msg
->msg_iov
, len
);
1345 * Just send the message to TinyTP, and let it deal with possible
1346 * errors. No need to duplicate all that here
1348 err
= irttp_data_request(self
->tsap
, skb
);
1350 IRDA_DEBUG(0, "%s(), err=%d\n", __func__
, err
);
1355 /* Tell client how much data we actually sent */
1359 err
= sk_stream_error(sk
, msg
->msg_flags
, err
);
1367 * Function irda_recvmsg_dgram (iocb, sock, msg, size, flags)
1369 * Try to receive message and copy it to user. The frame is discarded
1370 * after being read, regardless of how much the user actually read
1372 static int irda_recvmsg_dgram(struct kiocb
*iocb
, struct socket
*sock
,
1373 struct msghdr
*msg
, size_t size
, int flags
)
1375 struct sock
*sk
= sock
->sk
;
1376 struct irda_sock
*self
= irda_sk(sk
);
1377 struct sk_buff
*skb
;
1381 IRDA_DEBUG(4, "%s()\n", __func__
);
1383 skb
= skb_recv_datagram(sk
, flags
& ~MSG_DONTWAIT
,
1384 flags
& MSG_DONTWAIT
, &err
);
1388 skb_reset_transport_header(skb
);
1391 if (copied
> size
) {
1392 IRDA_DEBUG(2, "%s(), Received truncated frame (%zd < %zd)!\n",
1393 __func__
, copied
, size
);
1395 msg
->msg_flags
|= MSG_TRUNC
;
1397 skb_copy_datagram_iovec(skb
, 0, msg
->msg_iov
, copied
);
1399 skb_free_datagram(sk
, skb
);
1402 * Check if we have previously stopped IrTTP and we know
1403 * have more free space in our rx_queue. If so tell IrTTP
1404 * to start delivering frames again before our rx_queue gets
1407 if (self
->rx_flow
== FLOW_STOP
) {
1408 if ((atomic_read(&sk
->sk_rmem_alloc
) << 2) <= sk
->sk_rcvbuf
) {
1409 IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __func__
);
1410 self
->rx_flow
= FLOW_START
;
1411 irttp_flow_request(self
->tsap
, FLOW_START
);
1419 * Function irda_recvmsg_stream (iocb, sock, msg, size, flags)
1421 static int irda_recvmsg_stream(struct kiocb
*iocb
, struct socket
*sock
,
1422 struct msghdr
*msg
, size_t size
, int flags
)
1424 struct sock
*sk
= sock
->sk
;
1425 struct irda_sock
*self
= irda_sk(sk
);
1426 int noblock
= flags
& MSG_DONTWAIT
;
1431 IRDA_DEBUG(3, "%s()\n", __func__
);
1433 if ((err
= sock_error(sk
)) < 0)
1436 if (sock
->flags
& __SO_ACCEPTCON
)
1440 if (flags
& MSG_OOB
)
1444 target
= sock_rcvlowat(sk
, flags
& MSG_WAITALL
, size
);
1445 timeo
= sock_rcvtimeo(sk
, noblock
);
1449 struct sk_buff
*skb
= skb_dequeue(&sk
->sk_receive_queue
);
1455 if (copied
>= target
)
1458 prepare_to_wait_exclusive(sk_sleep(sk
), &wait
, TASK_INTERRUPTIBLE
);
1461 * POSIX 1003.1g mandates this order.
1463 err
= sock_error(sk
);
1466 else if (sk
->sk_shutdown
& RCV_SHUTDOWN
)
1470 else if (signal_pending(current
))
1471 err
= sock_intr_errno(timeo
);
1472 else if (sk
->sk_state
!= TCP_ESTABLISHED
)
1474 else if (skb_peek(&sk
->sk_receive_queue
) == NULL
)
1475 /* Wait process until data arrives */
1478 finish_wait(sk_sleep(sk
), &wait
);
1482 if (sk
->sk_shutdown
& RCV_SHUTDOWN
)
1488 chunk
= min_t(unsigned int, skb
->len
, size
);
1489 if (memcpy_toiovec(msg
->msg_iov
, skb
->data
, chunk
)) {
1490 skb_queue_head(&sk
->sk_receive_queue
, skb
);
1498 /* Mark read part of skb as used */
1499 if (!(flags
& MSG_PEEK
)) {
1500 skb_pull(skb
, chunk
);
1502 /* put the skb back if we didn't use it up.. */
1504 IRDA_DEBUG(1, "%s(), back on q!\n",
1506 skb_queue_head(&sk
->sk_receive_queue
, skb
);
1512 IRDA_DEBUG(0, "%s() questionable!?\n", __func__
);
1514 /* put message back and return */
1515 skb_queue_head(&sk
->sk_receive_queue
, skb
);
1521 * Check if we have previously stopped IrTTP and we know
1522 * have more free space in our rx_queue. If so tell IrTTP
1523 * to start delivering frames again before our rx_queue gets
1526 if (self
->rx_flow
== FLOW_STOP
) {
1527 if ((atomic_read(&sk
->sk_rmem_alloc
) << 2) <= sk
->sk_rcvbuf
) {
1528 IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __func__
);
1529 self
->rx_flow
= FLOW_START
;
1530 irttp_flow_request(self
->tsap
, FLOW_START
);
1538 * Function irda_sendmsg_dgram (iocb, sock, msg, len)
1540 * Send message down to TinyTP for the unreliable sequenced
1544 static int irda_sendmsg_dgram(struct kiocb
*iocb
, struct socket
*sock
,
1545 struct msghdr
*msg
, size_t len
)
1547 struct sock
*sk
= sock
->sk
;
1548 struct irda_sock
*self
;
1549 struct sk_buff
*skb
;
1552 IRDA_DEBUG(4, "%s(), len=%zd\n", __func__
, len
);
1554 if (msg
->msg_flags
& ~(MSG_DONTWAIT
|MSG_CMSG_COMPAT
))
1559 if (sk
->sk_shutdown
& SEND_SHUTDOWN
) {
1560 send_sig(SIGPIPE
, current
, 0);
1566 if (sk
->sk_state
!= TCP_ESTABLISHED
)
1572 * Check that we don't send out too big frames. This is an unreliable
1573 * service, so we have no fragmentation and no coalescence
1575 if (len
> self
->max_data_size
) {
1576 IRDA_DEBUG(0, "%s(), Warning to much data! "
1577 "Chopping frame from %zd to %d bytes!\n",
1578 __func__
, len
, self
->max_data_size
);
1579 len
= self
->max_data_size
;
1582 skb
= sock_alloc_send_skb(sk
, len
+ self
->max_header_size
,
1583 msg
->msg_flags
& MSG_DONTWAIT
, &err
);
1588 skb_reserve(skb
, self
->max_header_size
);
1589 skb_reset_transport_header(skb
);
1591 IRDA_DEBUG(4, "%s(), appending user data\n", __func__
);
1593 err
= memcpy_fromiovec(skb_transport_header(skb
), msg
->msg_iov
, len
);
1600 * Just send the message to TinyTP, and let it deal with possible
1601 * errors. No need to duplicate all that here
1603 err
= irttp_udata_request(self
->tsap
, skb
);
1605 IRDA_DEBUG(0, "%s(), err=%d\n", __func__
, err
);
1618 * Function irda_sendmsg_ultra (iocb, sock, msg, len)
1620 * Send message down to IrLMP for the unreliable Ultra
1623 #ifdef CONFIG_IRDA_ULTRA
1624 static int irda_sendmsg_ultra(struct kiocb
*iocb
, struct socket
*sock
,
1625 struct msghdr
*msg
, size_t len
)
1627 struct sock
*sk
= sock
->sk
;
1628 struct irda_sock
*self
;
1631 struct sk_buff
*skb
;
1634 IRDA_DEBUG(4, "%s(), len=%zd\n", __func__
, len
);
1637 if (msg
->msg_flags
& ~(MSG_DONTWAIT
|MSG_CMSG_COMPAT
))
1643 if (sk
->sk_shutdown
& SEND_SHUTDOWN
) {
1644 send_sig(SIGPIPE
, current
, 0);
1650 /* Check if an address was specified with sendto. Jean II */
1651 if (msg
->msg_name
) {
1652 DECLARE_SOCKADDR(struct sockaddr_irda
*, addr
, msg
->msg_name
);
1654 /* Check address, extract pid. Jean II */
1655 if (msg
->msg_namelen
< sizeof(*addr
))
1657 if (addr
->sir_family
!= AF_IRDA
)
1660 pid
= addr
->sir_lsap_sel
;
1662 IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __func__
);
1667 /* Check that the socket is properly bound to an Ultra
1669 if ((self
->lsap
== NULL
) ||
1670 (sk
->sk_state
!= TCP_ESTABLISHED
)) {
1671 IRDA_DEBUG(0, "%s(), socket not bound to Ultra PID.\n",
1676 /* Use PID from socket */
1681 * Check that we don't send out too big frames. This is an unreliable
1682 * service, so we have no fragmentation and no coalescence
1684 if (len
> self
->max_data_size
) {
1685 IRDA_DEBUG(0, "%s(), Warning to much data! "
1686 "Chopping frame from %zd to %d bytes!\n",
1687 __func__
, len
, self
->max_data_size
);
1688 len
= self
->max_data_size
;
1691 skb
= sock_alloc_send_skb(sk
, len
+ self
->max_header_size
,
1692 msg
->msg_flags
& MSG_DONTWAIT
, &err
);
1697 skb_reserve(skb
, self
->max_header_size
);
1698 skb_reset_transport_header(skb
);
1700 IRDA_DEBUG(4, "%s(), appending user data\n", __func__
);
1702 err
= memcpy_fromiovec(skb_transport_header(skb
), msg
->msg_iov
, len
);
1708 err
= irlmp_connless_data_request((bound
? self
->lsap
: NULL
),
1711 IRDA_DEBUG(0, "%s(), err=%d\n", __func__
, err
);
1716 #endif /* CONFIG_IRDA_ULTRA */
1719 * Function irda_shutdown (sk, how)
1721 static int irda_shutdown(struct socket
*sock
, int how
)
1723 struct sock
*sk
= sock
->sk
;
1724 struct irda_sock
*self
= irda_sk(sk
);
1726 IRDA_DEBUG(1, "%s(%p)\n", __func__
, self
);
1730 sk
->sk_state
= TCP_CLOSE
;
1731 sk
->sk_shutdown
|= SEND_SHUTDOWN
;
1732 sk
->sk_state_change(sk
);
1735 iriap_close(self
->iriap
);
1740 irttp_disconnect_request(self
->tsap
, NULL
, P_NORMAL
);
1741 irttp_close_tsap(self
->tsap
);
1745 /* A few cleanup so the socket look as good as new... */
1746 self
->rx_flow
= self
->tx_flow
= FLOW_START
; /* needed ??? */
1747 self
->daddr
= DEV_ADDR_ANY
; /* Until we get re-connected */
1748 self
->saddr
= 0x0; /* so IrLMP assign us any link */
1756 * Function irda_poll (file, sock, wait)
1758 static unsigned int irda_poll(struct file
* file
, struct socket
*sock
,
1761 struct sock
*sk
= sock
->sk
;
1762 struct irda_sock
*self
= irda_sk(sk
);
1765 IRDA_DEBUG(4, "%s()\n", __func__
);
1767 poll_wait(file
, sk_sleep(sk
), wait
);
1770 /* Exceptional events? */
1773 if (sk
->sk_shutdown
& RCV_SHUTDOWN
) {
1774 IRDA_DEBUG(0, "%s(), POLLHUP\n", __func__
);
1779 if (!skb_queue_empty(&sk
->sk_receive_queue
)) {
1780 IRDA_DEBUG(4, "Socket is readable\n");
1781 mask
|= POLLIN
| POLLRDNORM
;
1784 /* Connection-based need to check for termination and startup */
1785 switch (sk
->sk_type
) {
1787 if (sk
->sk_state
== TCP_CLOSE
) {
1788 IRDA_DEBUG(0, "%s(), POLLHUP\n", __func__
);
1792 if (sk
->sk_state
== TCP_ESTABLISHED
) {
1793 if ((self
->tx_flow
== FLOW_START
) &&
1796 mask
|= POLLOUT
| POLLWRNORM
| POLLWRBAND
;
1800 case SOCK_SEQPACKET
:
1801 if ((self
->tx_flow
== FLOW_START
) &&
1804 mask
|= POLLOUT
| POLLWRNORM
| POLLWRBAND
;
1808 if (sock_writeable(sk
))
1809 mask
|= POLLOUT
| POLLWRNORM
| POLLWRBAND
;
1819 * Function irda_ioctl (sock, cmd, arg)
1821 static int irda_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
)
1823 struct sock
*sk
= sock
->sk
;
1826 IRDA_DEBUG(4, "%s(), cmd=%#x\n", __func__
, cmd
);
1833 amount
= sk
->sk_sndbuf
- sk_wmem_alloc_get(sk
);
1836 err
= put_user(amount
, (unsigned int __user
*)arg
);
1841 struct sk_buff
*skb
;
1843 /* These two are safe on a single CPU system as only user tasks fiddle here */
1844 if ((skb
= skb_peek(&sk
->sk_receive_queue
)) != NULL
)
1846 err
= put_user(amount
, (unsigned int __user
*)arg
);
1852 err
= sock_get_timestamp(sk
, (struct timeval __user
*)arg
);
1857 case SIOCGIFDSTADDR
:
1858 case SIOCSIFDSTADDR
:
1859 case SIOCGIFBRDADDR
:
1860 case SIOCSIFBRDADDR
:
1861 case SIOCGIFNETMASK
:
1862 case SIOCSIFNETMASK
:
1867 IRDA_DEBUG(1, "%s(), doing device ioctl!\n", __func__
);
1874 #ifdef CONFIG_COMPAT
1876 * Function irda_ioctl (sock, cmd, arg)
1878 static int irda_compat_ioctl(struct socket
*sock
, unsigned int cmd
, unsigned long arg
)
1881 * All IRDA's ioctl are standard ones.
1883 return -ENOIOCTLCMD
;
1888 * Function irda_setsockopt (sock, level, optname, optval, optlen)
1890 * Set some options for the socket
1893 static int irda_setsockopt(struct socket
*sock
, int level
, int optname
,
1894 char __user
*optval
, unsigned int optlen
)
1896 struct sock
*sk
= sock
->sk
;
1897 struct irda_sock
*self
= irda_sk(sk
);
1898 struct irda_ias_set
*ias_opt
;
1899 struct ias_object
*ias_obj
;
1900 struct ias_attrib
* ias_attr
; /* Attribute in IAS object */
1901 int opt
, free_ias
= 0, err
= 0;
1903 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
1905 if (level
!= SOL_IRLMP
)
1906 return -ENOPROTOOPT
;
1912 /* The user want to add an attribute to an existing IAS object
1913 * (in the IAS database) or to create a new object with this
1915 * We first query IAS to know if the object exist, and then
1916 * create the right attribute...
1919 if (optlen
!= sizeof(struct irda_ias_set
)) {
1924 ias_opt
= kmalloc(sizeof(struct irda_ias_set
), GFP_ATOMIC
);
1925 if (ias_opt
== NULL
) {
1930 /* Copy query to the driver. */
1931 if (copy_from_user(ias_opt
, optval
, optlen
)) {
1937 /* Find the object we target.
1938 * If the user gives us an empty string, we use the object
1939 * associated with this socket. This will workaround
1940 * duplicated class name - Jean II */
1941 if(ias_opt
->irda_class_name
[0] == '\0') {
1942 if(self
->ias_obj
== NULL
) {
1947 ias_obj
= self
->ias_obj
;
1949 ias_obj
= irias_find_object(ias_opt
->irda_class_name
);
1951 /* Only ROOT can mess with the global IAS database.
1952 * Users can only add attributes to the object associated
1953 * with the socket they own - Jean II */
1954 if((!capable(CAP_NET_ADMIN
)) &&
1955 ((ias_obj
== NULL
) || (ias_obj
!= self
->ias_obj
))) {
1961 /* If the object doesn't exist, create it */
1962 if(ias_obj
== (struct ias_object
*) NULL
) {
1963 /* Create a new object */
1964 ias_obj
= irias_new_object(ias_opt
->irda_class_name
,
1966 if (ias_obj
== NULL
) {
1974 /* Do we have the attribute already ? */
1975 if(irias_find_attrib(ias_obj
, ias_opt
->irda_attrib_name
)) {
1978 kfree(ias_obj
->name
);
1985 /* Look at the type */
1986 switch(ias_opt
->irda_attrib_type
) {
1988 /* Add an integer attribute */
1989 irias_add_integer_attrib(
1991 ias_opt
->irda_attrib_name
,
1992 ias_opt
->attribute
.irda_attrib_int
,
1997 if(ias_opt
->attribute
.irda_attrib_octet_seq
.len
>
1998 IAS_MAX_OCTET_STRING
) {
2001 kfree(ias_obj
->name
);
2008 /* Add an octet sequence attribute */
2009 irias_add_octseq_attrib(
2011 ias_opt
->irda_attrib_name
,
2012 ias_opt
->attribute
.irda_attrib_octet_seq
.octet_seq
,
2013 ias_opt
->attribute
.irda_attrib_octet_seq
.len
,
2017 /* Should check charset & co */
2019 /* The length is encoded in a __u8, and
2020 * IAS_MAX_STRING == 256, so there is no way
2021 * userspace can pass us a string too large.
2023 /* NULL terminate the string (avoid troubles) */
2024 ias_opt
->attribute
.irda_attrib_string
.string
[ias_opt
->attribute
.irda_attrib_string
.len
] = '\0';
2025 /* Add a string attribute */
2026 irias_add_string_attrib(
2028 ias_opt
->irda_attrib_name
,
2029 ias_opt
->attribute
.irda_attrib_string
.string
,
2035 kfree(ias_obj
->name
);
2041 irias_insert_object(ias_obj
);
2045 /* The user want to delete an object from our local IAS
2046 * database. We just need to query the IAS, check is the
2047 * object is not owned by the kernel and delete it.
2050 if (optlen
!= sizeof(struct irda_ias_set
)) {
2055 ias_opt
= kmalloc(sizeof(struct irda_ias_set
), GFP_ATOMIC
);
2056 if (ias_opt
== NULL
) {
2061 /* Copy query to the driver. */
2062 if (copy_from_user(ias_opt
, optval
, optlen
)) {
2068 /* Find the object we target.
2069 * If the user gives us an empty string, we use the object
2070 * associated with this socket. This will workaround
2071 * duplicated class name - Jean II */
2072 if(ias_opt
->irda_class_name
[0] == '\0')
2073 ias_obj
= self
->ias_obj
;
2075 ias_obj
= irias_find_object(ias_opt
->irda_class_name
);
2076 if(ias_obj
== (struct ias_object
*) NULL
) {
2082 /* Only ROOT can mess with the global IAS database.
2083 * Users can only del attributes from the object associated
2084 * with the socket they own - Jean II */
2085 if((!capable(CAP_NET_ADMIN
)) &&
2086 ((ias_obj
== NULL
) || (ias_obj
!= self
->ias_obj
))) {
2092 /* Find the attribute (in the object) we target */
2093 ias_attr
= irias_find_attrib(ias_obj
,
2094 ias_opt
->irda_attrib_name
);
2095 if(ias_attr
== (struct ias_attrib
*) NULL
) {
2101 /* Check is the user space own the object */
2102 if(ias_attr
->value
->owner
!= IAS_USER_ATTR
) {
2103 IRDA_DEBUG(1, "%s(), attempting to delete a kernel attribute\n", __func__
);
2109 /* Remove the attribute (and maybe the object) */
2110 irias_delete_attrib(ias_obj
, ias_attr
, 1);
2113 case IRLMP_MAX_SDU_SIZE
:
2114 if (optlen
< sizeof(int)) {
2119 if (get_user(opt
, (int __user
*)optval
)) {
2124 /* Only possible for a seqpacket service (TTP with SAR) */
2125 if (sk
->sk_type
!= SOCK_SEQPACKET
) {
2126 IRDA_DEBUG(2, "%s(), setting max_sdu_size = %d\n",
2128 self
->max_sdu_size_rx
= opt
;
2130 IRDA_WARNING("%s: not allowed to set MAXSDUSIZE for this socket type!\n",
2136 case IRLMP_HINTS_SET
:
2137 if (optlen
< sizeof(int)) {
2142 /* The input is really a (__u8 hints[2]), easier as an int */
2143 if (get_user(opt
, (int __user
*)optval
)) {
2148 /* Unregister any old registration */
2150 irlmp_unregister_service(self
->skey
);
2152 self
->skey
= irlmp_register_service((__u16
) opt
);
2154 case IRLMP_HINT_MASK_SET
:
2155 /* As opposed to the previous case which set the hint bits
2156 * that we advertise, this one set the filter we use when
2157 * making a discovery (nodes which don't match any hint
2158 * bit in the mask are not reported).
2160 if (optlen
< sizeof(int)) {
2165 /* The input is really a (__u8 hints[2]), easier as an int */
2166 if (get_user(opt
, (int __user
*)optval
)) {
2171 /* Set the new hint mask */
2172 self
->mask
.word
= (__u16
) opt
;
2173 /* Mask out extension bits */
2174 self
->mask
.word
&= 0x7f7f;
2175 /* Check if no bits */
2176 if(!self
->mask
.word
)
2177 self
->mask
.word
= 0xFFFF;
2192 * Function irda_extract_ias_value(ias_opt, ias_value)
2194 * Translate internal IAS value structure to the user space representation
2196 * The external representation of IAS values, as we exchange them with
2197 * user space program is quite different from the internal representation,
2198 * as stored in the IAS database (because we need a flat structure for
2199 * crossing kernel boundary).
2200 * This function transform the former in the latter. We also check
2201 * that the value type is valid.
2203 static int irda_extract_ias_value(struct irda_ias_set
*ias_opt
,
2204 struct ias_value
*ias_value
)
2206 /* Look at the type */
2207 switch (ias_value
->type
) {
2209 /* Copy the integer */
2210 ias_opt
->attribute
.irda_attrib_int
= ias_value
->t
.integer
;
2214 ias_opt
->attribute
.irda_attrib_octet_seq
.len
= ias_value
->len
;
2216 memcpy(ias_opt
->attribute
.irda_attrib_octet_seq
.octet_seq
,
2217 ias_value
->t
.oct_seq
, ias_value
->len
);
2221 ias_opt
->attribute
.irda_attrib_string
.len
= ias_value
->len
;
2222 ias_opt
->attribute
.irda_attrib_string
.charset
= ias_value
->charset
;
2224 memcpy(ias_opt
->attribute
.irda_attrib_string
.string
,
2225 ias_value
->t
.string
, ias_value
->len
);
2226 /* NULL terminate the string (avoid troubles) */
2227 ias_opt
->attribute
.irda_attrib_string
.string
[ias_value
->len
] = '\0';
2234 /* Copy type over */
2235 ias_opt
->irda_attrib_type
= ias_value
->type
;
2241 * Function irda_getsockopt (sock, level, optname, optval, optlen)
2243 static int irda_getsockopt(struct socket
*sock
, int level
, int optname
,
2244 char __user
*optval
, int __user
*optlen
)
2246 struct sock
*sk
= sock
->sk
;
2247 struct irda_sock
*self
= irda_sk(sk
);
2248 struct irda_device_list list
;
2249 struct irda_device_info
*discoveries
;
2250 struct irda_ias_set
* ias_opt
; /* IAS get/query params */
2251 struct ias_object
* ias_obj
; /* Object in IAS */
2252 struct ias_attrib
* ias_attr
; /* Attribute in IAS object */
2253 int daddr
= DEV_ADDR_ANY
; /* Dest address for IAS queries */
2259 IRDA_DEBUG(2, "%s(%p)\n", __func__
, self
);
2261 if (level
!= SOL_IRLMP
)
2262 return -ENOPROTOOPT
;
2264 if (get_user(len
, optlen
))
2273 case IRLMP_ENUMDEVICES
:
2275 /* Offset to first device entry */
2276 offset
= sizeof(struct irda_device_list
) -
2277 sizeof(struct irda_device_info
);
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
, offset
))
2297 /* Copy the list itself - watch for overflow */
2298 if (list
.len
> 2048) {
2302 total
= offset
+ (list
.len
* sizeof(struct irda_device_info
));
2305 if (copy_to_user(optval
+offset
, discoveries
, total
- offset
))
2308 /* Write total number of bytes used back to client */
2309 if (put_user(total
, optlen
))
2312 /* Free up our buffer */
2315 case IRLMP_MAX_SDU_SIZE
:
2316 val
= self
->max_data_size
;
2318 if (put_user(len
, optlen
)) {
2323 if (copy_to_user(optval
, &val
, len
)) {
2330 /* The user want an object from our local IAS database.
2331 * We just need to query the IAS and return the value
2334 /* Check that the user has allocated the right space for us */
2335 if (len
!= sizeof(struct irda_ias_set
)) {
2340 ias_opt
= kmalloc(sizeof(struct irda_ias_set
), GFP_ATOMIC
);
2341 if (ias_opt
== NULL
) {
2346 /* Copy query to the driver. */
2347 if (copy_from_user(ias_opt
, optval
, len
)) {
2353 /* Find the object we target.
2354 * If the user gives us an empty string, we use the object
2355 * associated with this socket. This will workaround
2356 * duplicated class name - Jean II */
2357 if(ias_opt
->irda_class_name
[0] == '\0')
2358 ias_obj
= self
->ias_obj
;
2360 ias_obj
= irias_find_object(ias_opt
->irda_class_name
);
2361 if(ias_obj
== (struct ias_object
*) NULL
) {
2367 /* Find the attribute (in the object) we target */
2368 ias_attr
= irias_find_attrib(ias_obj
,
2369 ias_opt
->irda_attrib_name
);
2370 if(ias_attr
== (struct ias_attrib
*) NULL
) {
2376 /* Translate from internal to user structure */
2377 err
= irda_extract_ias_value(ias_opt
, ias_attr
->value
);
2383 /* Copy reply to the user */
2384 if (copy_to_user(optval
, ias_opt
,
2385 sizeof(struct irda_ias_set
))) {
2390 /* Note : don't need to put optlen, we checked it */
2393 case IRLMP_IAS_QUERY
:
2394 /* The user want an object from a remote IAS database.
2395 * We need to use IAP to query the remote database and
2396 * then wait for the answer to come back. */
2398 /* Check that the user has allocated the right space for us */
2399 if (len
!= sizeof(struct irda_ias_set
)) {
2404 ias_opt
= kmalloc(sizeof(struct irda_ias_set
), GFP_ATOMIC
);
2405 if (ias_opt
== NULL
) {
2410 /* Copy query to the driver. */
2411 if (copy_from_user(ias_opt
, optval
, len
)) {
2417 /* At this point, there are two cases...
2418 * 1) the socket is connected - that's the easy case, we
2419 * just query the device we are connected to...
2420 * 2) the socket is not connected - the user doesn't want
2421 * to connect and/or may not have a valid service name
2422 * (so can't create a fake connection). In this case,
2423 * we assume that the user pass us a valid destination
2424 * address in the requesting structure...
2426 if(self
->daddr
!= DEV_ADDR_ANY
) {
2427 /* We are connected - reuse known daddr */
2428 daddr
= self
->daddr
;
2430 /* We are not connected, we must specify a valid
2431 * destination address */
2432 daddr
= ias_opt
->daddr
;
2433 if((!daddr
) || (daddr
== DEV_ADDR_ANY
)) {
2440 /* Check that we can proceed with IAP */
2442 IRDA_WARNING("%s: busy with a previous query\n",
2449 self
->iriap
= iriap_open(LSAP_ANY
, IAS_CLIENT
, self
,
2450 irda_getvalue_confirm
);
2452 if (self
->iriap
== NULL
) {
2458 /* Treat unexpected wakeup as disconnect */
2459 self
->errno
= -EHOSTUNREACH
;
2461 /* Query remote LM-IAS */
2462 iriap_getvaluebyclass_request(self
->iriap
,
2464 ias_opt
->irda_class_name
,
2465 ias_opt
->irda_attrib_name
);
2467 /* Wait for answer, if not yet finished (or failed) */
2468 if (wait_event_interruptible(self
->query_wait
,
2469 (self
->iriap
== NULL
))) {
2470 /* pending request uses copy of ias_opt-content
2471 * we can free it regardless! */
2473 /* Treat signals as disconnect */
2474 err
= -EHOSTUNREACH
;
2478 /* Check what happened */
2482 /* Requested object/attribute doesn't exist */
2483 if((self
->errno
== IAS_CLASS_UNKNOWN
) ||
2484 (self
->errno
== IAS_ATTRIB_UNKNOWN
))
2485 err
= -EADDRNOTAVAIL
;
2487 err
= -EHOSTUNREACH
;
2492 /* Translate from internal to user structure */
2493 err
= irda_extract_ias_value(ias_opt
, self
->ias_result
);
2494 if (self
->ias_result
)
2495 irias_delete_value(self
->ias_result
);
2501 /* Copy reply to the user */
2502 if (copy_to_user(optval
, ias_opt
,
2503 sizeof(struct irda_ias_set
))) {
2508 /* Note : don't need to put optlen, we checked it */
2511 case IRLMP_WAITDEVICE
:
2512 /* This function is just another way of seeing life ;-)
2513 * IRLMP_ENUMDEVICES assumes that you have a static network,
2514 * and that you just want to pick one of the devices present.
2515 * On the other hand, in here we assume that no device is
2516 * present and that at some point in the future a device will
2517 * come into range. When this device arrive, we just wake
2518 * up the caller, so that he has time to connect to it before
2519 * the device goes away...
2520 * Note : once the node has been discovered for more than a
2521 * few second, it won't trigger this function, unless it
2522 * goes away and come back changes its hint bits (so we
2523 * might call it IRLMP_WAITNEWDEVICE).
2526 /* Check that the user is passing us an int */
2527 if (len
!= sizeof(int)) {
2531 /* Get timeout in ms (max time we block the caller) */
2532 if (get_user(val
, (int __user
*)optval
)) {
2537 /* Tell IrLMP we want to be notified */
2538 irlmp_update_client(self
->ckey
, self
->mask
.word
,
2539 irda_selective_discovery_indication
,
2540 NULL
, (void *) self
);
2542 /* Do some discovery (and also return cached results) */
2543 irlmp_discovery_request(self
->nslots
);
2545 /* Wait until a node is discovered */
2546 if (!self
->cachedaddr
) {
2547 IRDA_DEBUG(1, "%s(), nothing discovered yet, going to sleep...\n", __func__
);
2549 /* Set watchdog timer to expire in <val> ms. */
2551 setup_timer(&self
->watchdog
, irda_discovery_timeout
,
2552 (unsigned long)self
);
2553 mod_timer(&self
->watchdog
,
2554 jiffies
+ msecs_to_jiffies(val
));
2556 /* Wait for IR-LMP to call us back */
2557 err
= __wait_event_interruptible(self
->query_wait
,
2558 (self
->cachedaddr
!= 0 || self
->errno
== -ETIME
));
2560 /* If watchdog is still activated, kill it! */
2561 del_timer(&(self
->watchdog
));
2563 IRDA_DEBUG(1, "%s(), ...waking up !\n", __func__
);
2569 IRDA_DEBUG(1, "%s(), found immediately !\n",
2572 /* Tell IrLMP that we have been notified */
2573 irlmp_update_client(self
->ckey
, self
->mask
.word
,
2576 /* Check if the we got some results */
2577 if (!self
->cachedaddr
) {
2578 err
= -EAGAIN
; /* Didn't find any devices */
2581 daddr
= self
->cachedaddr
;
2583 self
->cachedaddr
= 0;
2585 /* We return the daddr of the device that trigger the
2586 * wakeup. As irlmp pass us only the new devices, we
2587 * are sure that it's not an old device.
2588 * If the user want more details, he should query
2589 * the whole discovery log and pick one device...
2591 if (put_user(daddr
, (int __user
*)optval
)) {
2608 static const struct net_proto_family irda_family_ops
= {
2610 .create
= irda_create
,
2611 .owner
= THIS_MODULE
,
2614 static const struct proto_ops irda_stream_ops
= {
2616 .owner
= THIS_MODULE
,
2617 .release
= irda_release
,
2619 .connect
= irda_connect
,
2620 .socketpair
= sock_no_socketpair
,
2621 .accept
= irda_accept
,
2622 .getname
= irda_getname
,
2624 .ioctl
= irda_ioctl
,
2625 #ifdef CONFIG_COMPAT
2626 .compat_ioctl
= irda_compat_ioctl
,
2628 .listen
= irda_listen
,
2629 .shutdown
= irda_shutdown
,
2630 .setsockopt
= irda_setsockopt
,
2631 .getsockopt
= irda_getsockopt
,
2632 .sendmsg
= irda_sendmsg
,
2633 .recvmsg
= irda_recvmsg_stream
,
2634 .mmap
= sock_no_mmap
,
2635 .sendpage
= sock_no_sendpage
,
2638 static const struct proto_ops irda_seqpacket_ops
= {
2640 .owner
= THIS_MODULE
,
2641 .release
= irda_release
,
2643 .connect
= irda_connect
,
2644 .socketpair
= sock_no_socketpair
,
2645 .accept
= irda_accept
,
2646 .getname
= irda_getname
,
2647 .poll
= datagram_poll
,
2648 .ioctl
= irda_ioctl
,
2649 #ifdef CONFIG_COMPAT
2650 .compat_ioctl
= irda_compat_ioctl
,
2652 .listen
= irda_listen
,
2653 .shutdown
= irda_shutdown
,
2654 .setsockopt
= irda_setsockopt
,
2655 .getsockopt
= irda_getsockopt
,
2656 .sendmsg
= irda_sendmsg
,
2657 .recvmsg
= irda_recvmsg_dgram
,
2658 .mmap
= sock_no_mmap
,
2659 .sendpage
= sock_no_sendpage
,
2662 static const struct proto_ops irda_dgram_ops
= {
2664 .owner
= THIS_MODULE
,
2665 .release
= irda_release
,
2667 .connect
= irda_connect
,
2668 .socketpair
= sock_no_socketpair
,
2669 .accept
= irda_accept
,
2670 .getname
= irda_getname
,
2671 .poll
= datagram_poll
,
2672 .ioctl
= irda_ioctl
,
2673 #ifdef CONFIG_COMPAT
2674 .compat_ioctl
= irda_compat_ioctl
,
2676 .listen
= irda_listen
,
2677 .shutdown
= irda_shutdown
,
2678 .setsockopt
= irda_setsockopt
,
2679 .getsockopt
= irda_getsockopt
,
2680 .sendmsg
= irda_sendmsg_dgram
,
2681 .recvmsg
= irda_recvmsg_dgram
,
2682 .mmap
= sock_no_mmap
,
2683 .sendpage
= sock_no_sendpage
,
2686 #ifdef CONFIG_IRDA_ULTRA
2687 static const struct proto_ops irda_ultra_ops
= {
2689 .owner
= THIS_MODULE
,
2690 .release
= irda_release
,
2692 .connect
= sock_no_connect
,
2693 .socketpair
= sock_no_socketpair
,
2694 .accept
= sock_no_accept
,
2695 .getname
= irda_getname
,
2696 .poll
= datagram_poll
,
2697 .ioctl
= irda_ioctl
,
2698 #ifdef CONFIG_COMPAT
2699 .compat_ioctl
= irda_compat_ioctl
,
2701 .listen
= sock_no_listen
,
2702 .shutdown
= irda_shutdown
,
2703 .setsockopt
= irda_setsockopt
,
2704 .getsockopt
= irda_getsockopt
,
2705 .sendmsg
= irda_sendmsg_ultra
,
2706 .recvmsg
= irda_recvmsg_dgram
,
2707 .mmap
= sock_no_mmap
,
2708 .sendpage
= sock_no_sendpage
,
2710 #endif /* CONFIG_IRDA_ULTRA */
2713 * Function irsock_init (pro)
2715 * Initialize IrDA protocol
2718 int __init
irsock_init(void)
2720 int rc
= proto_register(&irda_proto
, 0);
2723 rc
= sock_register(&irda_family_ops
);
2729 * Function irsock_cleanup (void)
2731 * Remove IrDA protocol
2734 void irsock_cleanup(void)
2736 sock_unregister(PF_IRDA
);
2737 proto_unregister(&irda_proto
);