2 * Copyright (C) 2011 Intel Corporation. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the
16 * Free Software Foundation, Inc.,
17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20 #define pr_fmt(fmt) "llcp: %s: " fmt, __func__
22 #include <linux/init.h>
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/nfc.h>
30 static int sock_wait_state(struct sock
*sk
, int state
, unsigned long timeo
)
32 DECLARE_WAITQUEUE(wait
, current
);
35 pr_debug("sk %p", sk
);
37 add_wait_queue(sk_sleep(sk
), &wait
);
38 set_current_state(TASK_INTERRUPTIBLE
);
40 while (sk
->sk_state
!= state
) {
46 if (signal_pending(current
)) {
47 err
= sock_intr_errno(timeo
);
52 timeo
= schedule_timeout(timeo
);
54 set_current_state(TASK_INTERRUPTIBLE
);
61 __set_current_state(TASK_RUNNING
);
62 remove_wait_queue(sk_sleep(sk
), &wait
);
66 static struct proto llcp_sock_proto
= {
69 .obj_size
= sizeof(struct nfc_llcp_sock
),
72 static int llcp_sock_bind(struct socket
*sock
, struct sockaddr
*addr
, int alen
)
74 struct sock
*sk
= sock
->sk
;
75 struct nfc_llcp_sock
*llcp_sock
= nfc_llcp_sock(sk
);
76 struct nfc_llcp_local
*local
;
78 struct sockaddr_nfc_llcp llcp_addr
;
81 if (!addr
|| addr
->sa_family
!= AF_NFC
)
84 pr_debug("sk %p addr %p family %d\n", sk
, addr
, addr
->sa_family
);
86 memset(&llcp_addr
, 0, sizeof(llcp_addr
));
87 len
= min_t(unsigned int, sizeof(llcp_addr
), alen
);
88 memcpy(&llcp_addr
, addr
, len
);
90 /* This is going to be a listening socket, dsap must be 0 */
91 if (llcp_addr
.dsap
!= 0)
96 if (sk
->sk_state
!= LLCP_CLOSED
) {
101 dev
= nfc_get_device(llcp_addr
.dev_idx
);
107 local
= nfc_llcp_find_local(dev
);
113 llcp_sock
->dev
= dev
;
114 llcp_sock
->local
= nfc_llcp_local_get(local
);
115 llcp_sock
->nfc_protocol
= llcp_addr
.nfc_protocol
;
116 llcp_sock
->service_name_len
= min_t(unsigned int,
117 llcp_addr
.service_name_len
,
118 NFC_LLCP_MAX_SERVICE_NAME
);
119 llcp_sock
->service_name
= kmemdup(llcp_addr
.service_name
,
120 llcp_sock
->service_name_len
,
123 llcp_sock
->ssap
= nfc_llcp_get_sdp_ssap(local
, llcp_sock
);
124 if (llcp_sock
->ssap
== LLCP_SAP_MAX
) {
129 llcp_sock
->reserved_ssap
= llcp_sock
->ssap
;
131 nfc_llcp_sock_link(&local
->sockets
, sk
);
133 pr_debug("Socket bound to SAP %d\n", llcp_sock
->ssap
);
135 sk
->sk_state
= LLCP_BOUND
;
145 static int llcp_raw_sock_bind(struct socket
*sock
, struct sockaddr
*addr
,
148 struct sock
*sk
= sock
->sk
;
149 struct nfc_llcp_sock
*llcp_sock
= nfc_llcp_sock(sk
);
150 struct nfc_llcp_local
*local
;
152 struct sockaddr_nfc_llcp llcp_addr
;
155 if (!addr
|| addr
->sa_family
!= AF_NFC
)
158 pr_debug("sk %p addr %p family %d\n", sk
, addr
, addr
->sa_family
);
160 memset(&llcp_addr
, 0, sizeof(llcp_addr
));
161 len
= min_t(unsigned int, sizeof(llcp_addr
), alen
);
162 memcpy(&llcp_addr
, addr
, len
);
166 if (sk
->sk_state
!= LLCP_CLOSED
) {
171 dev
= nfc_get_device(llcp_addr
.dev_idx
);
177 local
= nfc_llcp_find_local(dev
);
183 llcp_sock
->dev
= dev
;
184 llcp_sock
->local
= nfc_llcp_local_get(local
);
185 llcp_sock
->nfc_protocol
= llcp_addr
.nfc_protocol
;
187 nfc_llcp_sock_link(&local
->raw_sockets
, sk
);
189 sk
->sk_state
= LLCP_BOUND
;
199 static int llcp_sock_listen(struct socket
*sock
, int backlog
)
201 struct sock
*sk
= sock
->sk
;
204 pr_debug("sk %p backlog %d\n", sk
, backlog
);
208 if ((sock
->type
!= SOCK_SEQPACKET
&& sock
->type
!= SOCK_STREAM
) ||
209 sk
->sk_state
!= LLCP_BOUND
) {
214 sk
->sk_max_ack_backlog
= backlog
;
215 sk
->sk_ack_backlog
= 0;
217 pr_debug("Socket listening\n");
218 sk
->sk_state
= LLCP_LISTEN
;
226 static int nfc_llcp_setsockopt(struct socket
*sock
, int level
, int optname
,
227 char __user
*optval
, unsigned int optlen
)
229 struct sock
*sk
= sock
->sk
;
230 struct nfc_llcp_sock
*llcp_sock
= nfc_llcp_sock(sk
);
234 pr_debug("%p optname %d\n", sk
, optname
);
236 if (level
!= SOL_NFC
)
243 if (sk
->sk_state
== LLCP_CONNECTED
||
244 sk
->sk_state
== LLCP_BOUND
||
245 sk
->sk_state
== LLCP_LISTEN
) {
250 if (get_user(opt
, (u32 __user
*) optval
)) {
255 if (opt
> LLCP_MAX_RW
) {
260 llcp_sock
->rw
= (u8
) opt
;
265 if (sk
->sk_state
== LLCP_CONNECTED
||
266 sk
->sk_state
== LLCP_BOUND
||
267 sk
->sk_state
== LLCP_LISTEN
) {
272 if (get_user(opt
, (u32 __user
*) optval
)) {
277 if (opt
> LLCP_MAX_MIUX
) {
282 llcp_sock
->miux
= (u16
) opt
;
293 pr_debug("%p rw %d miux %d\n", llcp_sock
,
294 llcp_sock
->rw
, llcp_sock
->miux
);
299 static int nfc_llcp_getsockopt(struct socket
*sock
, int level
, int optname
,
300 char __user
*optval
, int __user
*optlen
)
302 struct sock
*sk
= sock
->sk
;
303 struct nfc_llcp_sock
*llcp_sock
= nfc_llcp_sock(sk
);
306 pr_debug("%p optname %d\n", sk
, optname
);
308 if (level
!= SOL_NFC
)
311 if (get_user(len
, optlen
))
314 len
= min_t(u32
, len
, sizeof(u32
));
320 if (put_user(llcp_sock
->rw
, (u32 __user
*) optval
))
326 if (put_user(llcp_sock
->miux
, (u32 __user
*) optval
))
338 if (put_user(len
, optlen
))
344 void nfc_llcp_accept_unlink(struct sock
*sk
)
346 struct nfc_llcp_sock
*llcp_sock
= nfc_llcp_sock(sk
);
348 pr_debug("state %d\n", sk
->sk_state
);
350 list_del_init(&llcp_sock
->accept_queue
);
351 sk_acceptq_removed(llcp_sock
->parent
);
352 llcp_sock
->parent
= NULL
;
357 void nfc_llcp_accept_enqueue(struct sock
*parent
, struct sock
*sk
)
359 struct nfc_llcp_sock
*llcp_sock
= nfc_llcp_sock(sk
);
360 struct nfc_llcp_sock
*llcp_sock_parent
= nfc_llcp_sock(parent
);
362 /* Lock will be free from unlink */
365 list_add_tail(&llcp_sock
->accept_queue
,
366 &llcp_sock_parent
->accept_queue
);
367 llcp_sock
->parent
= parent
;
368 sk_acceptq_added(parent
);
371 struct sock
*nfc_llcp_accept_dequeue(struct sock
*parent
,
372 struct socket
*newsock
)
374 struct nfc_llcp_sock
*lsk
, *n
, *llcp_parent
;
377 llcp_parent
= nfc_llcp_sock(parent
);
379 list_for_each_entry_safe(lsk
, n
, &llcp_parent
->accept_queue
,
384 if (sk
->sk_state
== LLCP_CLOSED
) {
386 nfc_llcp_accept_unlink(sk
);
390 if (sk
->sk_state
== LLCP_CONNECTED
|| !newsock
) {
391 nfc_llcp_accept_unlink(sk
);
393 sock_graft(sk
, newsock
);
397 pr_debug("Returning sk state %d\n", sk
->sk_state
);
399 sk_acceptq_removed(parent
);
410 static int llcp_sock_accept(struct socket
*sock
, struct socket
*newsock
,
413 DECLARE_WAITQUEUE(wait
, current
);
414 struct sock
*sk
= sock
->sk
, *new_sk
;
418 pr_debug("parent %p\n", sk
);
420 lock_sock_nested(sk
, SINGLE_DEPTH_NESTING
);
422 if (sk
->sk_state
!= LLCP_LISTEN
) {
427 timeo
= sock_rcvtimeo(sk
, flags
& O_NONBLOCK
);
429 /* Wait for an incoming connection. */
430 add_wait_queue_exclusive(sk_sleep(sk
), &wait
);
431 while (!(new_sk
= nfc_llcp_accept_dequeue(sk
, newsock
))) {
432 set_current_state(TASK_INTERRUPTIBLE
);
439 if (signal_pending(current
)) {
440 ret
= sock_intr_errno(timeo
);
445 timeo
= schedule_timeout(timeo
);
446 lock_sock_nested(sk
, SINGLE_DEPTH_NESTING
);
448 __set_current_state(TASK_RUNNING
);
449 remove_wait_queue(sk_sleep(sk
), &wait
);
454 newsock
->state
= SS_CONNECTED
;
456 pr_debug("new socket %p\n", new_sk
);
464 static int llcp_sock_getname(struct socket
*sock
, struct sockaddr
*uaddr
,
467 struct sock
*sk
= sock
->sk
;
468 struct nfc_llcp_sock
*llcp_sock
= nfc_llcp_sock(sk
);
469 DECLARE_SOCKADDR(struct sockaddr_nfc_llcp
*, llcp_addr
, uaddr
);
471 if (llcp_sock
== NULL
|| llcp_sock
->dev
== NULL
)
474 pr_debug("%p %d %d %d\n", sk
, llcp_sock
->target_idx
,
475 llcp_sock
->dsap
, llcp_sock
->ssap
);
477 uaddr
->sa_family
= AF_NFC
;
479 *len
= sizeof(struct sockaddr_nfc_llcp
);
481 llcp_addr
->dev_idx
= llcp_sock
->dev
->idx
;
482 llcp_addr
->target_idx
= llcp_sock
->target_idx
;
483 llcp_addr
->dsap
= llcp_sock
->dsap
;
484 llcp_addr
->ssap
= llcp_sock
->ssap
;
485 llcp_addr
->service_name_len
= llcp_sock
->service_name_len
;
486 memcpy(llcp_addr
->service_name
, llcp_sock
->service_name
,
487 llcp_addr
->service_name_len
);
492 static inline unsigned int llcp_accept_poll(struct sock
*parent
)
494 struct nfc_llcp_sock
*llcp_sock
, *n
, *parent_sock
;
497 parent_sock
= nfc_llcp_sock(parent
);
499 list_for_each_entry_safe(llcp_sock
, n
, &parent_sock
->accept_queue
,
503 if (sk
->sk_state
== LLCP_CONNECTED
)
504 return POLLIN
| POLLRDNORM
;
510 static unsigned int llcp_sock_poll(struct file
*file
, struct socket
*sock
,
513 struct sock
*sk
= sock
->sk
;
514 unsigned int mask
= 0;
516 pr_debug("%p\n", sk
);
518 sock_poll_wait(file
, sk_sleep(sk
), wait
);
520 if (sk
->sk_state
== LLCP_LISTEN
)
521 return llcp_accept_poll(sk
);
523 if (sk
->sk_err
|| !skb_queue_empty(&sk
->sk_error_queue
))
526 if (!skb_queue_empty(&sk
->sk_receive_queue
))
527 mask
|= POLLIN
| POLLRDNORM
;
529 if (sk
->sk_state
== LLCP_CLOSED
)
532 if (sk
->sk_shutdown
& RCV_SHUTDOWN
)
533 mask
|= POLLRDHUP
| POLLIN
| POLLRDNORM
;
535 if (sk
->sk_shutdown
== SHUTDOWN_MASK
)
538 if (sock_writeable(sk
))
539 mask
|= POLLOUT
| POLLWRNORM
| POLLWRBAND
;
541 set_bit(SOCK_ASYNC_NOSPACE
, &sk
->sk_socket
->flags
);
543 pr_debug("mask 0x%x\n", mask
);
548 static int llcp_sock_release(struct socket
*sock
)
550 struct sock
*sk
= sock
->sk
;
551 struct nfc_llcp_local
*local
;
552 struct nfc_llcp_sock
*llcp_sock
= nfc_llcp_sock(sk
);
558 pr_debug("%p\n", sk
);
560 local
= llcp_sock
->local
;
569 if (sk
->sk_state
== LLCP_CONNECTED
)
570 nfc_llcp_disconnect(llcp_sock
);
572 if (sk
->sk_state
== LLCP_LISTEN
) {
573 struct nfc_llcp_sock
*lsk
, *n
;
574 struct sock
*accept_sk
;
576 list_for_each_entry_safe(lsk
, n
, &llcp_sock
->accept_queue
,
578 accept_sk
= &lsk
->sk
;
579 lock_sock(accept_sk
);
581 nfc_llcp_disconnect(lsk
);
582 nfc_llcp_accept_unlink(accept_sk
);
584 release_sock(accept_sk
);
586 sock_orphan(accept_sk
);
590 if (llcp_sock
->reserved_ssap
< LLCP_SAP_MAX
)
591 nfc_llcp_put_ssap(llcp_sock
->local
, llcp_sock
->ssap
);
595 if (sock
->type
== SOCK_RAW
)
596 nfc_llcp_sock_unlink(&local
->raw_sockets
, sk
);
598 nfc_llcp_sock_unlink(&local
->sockets
, sk
);
607 static int llcp_sock_connect(struct socket
*sock
, struct sockaddr
*_addr
,
610 struct sock
*sk
= sock
->sk
;
611 struct nfc_llcp_sock
*llcp_sock
= nfc_llcp_sock(sk
);
612 struct sockaddr_nfc_llcp
*addr
= (struct sockaddr_nfc_llcp
*)_addr
;
614 struct nfc_llcp_local
*local
;
617 pr_debug("sock %p sk %p flags 0x%x\n", sock
, sk
, flags
);
619 if (!addr
|| len
< sizeof(struct sockaddr_nfc
) ||
620 addr
->sa_family
!= AF_NFC
)
623 if (addr
->service_name_len
== 0 && addr
->dsap
== 0)
626 pr_debug("addr dev_idx=%u target_idx=%u protocol=%u\n", addr
->dev_idx
,
627 addr
->target_idx
, addr
->nfc_protocol
);
631 if (sk
->sk_state
== LLCP_CONNECTED
) {
636 dev
= nfc_get_device(addr
->dev_idx
);
642 local
= nfc_llcp_find_local(dev
);
648 device_lock(&dev
->dev
);
649 if (dev
->dep_link_up
== false) {
651 device_unlock(&dev
->dev
);
654 device_unlock(&dev
->dev
);
656 if (local
->rf_mode
== NFC_RF_INITIATOR
&&
657 addr
->target_idx
!= local
->target_idx
) {
662 llcp_sock
->dev
= dev
;
663 llcp_sock
->local
= nfc_llcp_local_get(local
);
664 llcp_sock
->remote_miu
= llcp_sock
->local
->remote_miu
;
665 llcp_sock
->ssap
= nfc_llcp_get_local_ssap(local
);
666 if (llcp_sock
->ssap
== LLCP_SAP_MAX
) {
671 llcp_sock
->reserved_ssap
= llcp_sock
->ssap
;
673 if (addr
->service_name_len
== 0)
674 llcp_sock
->dsap
= addr
->dsap
;
676 llcp_sock
->dsap
= LLCP_SAP_SDP
;
677 llcp_sock
->nfc_protocol
= addr
->nfc_protocol
;
678 llcp_sock
->service_name_len
= min_t(unsigned int,
679 addr
->service_name_len
,
680 NFC_LLCP_MAX_SERVICE_NAME
);
681 llcp_sock
->service_name
= kmemdup(addr
->service_name
,
682 llcp_sock
->service_name_len
,
685 nfc_llcp_sock_link(&local
->connecting_sockets
, sk
);
687 ret
= nfc_llcp_send_connect(llcp_sock
);
691 ret
= sock_wait_state(sk
, LLCP_CONNECTED
,
692 sock_sndtimeo(sk
, flags
& O_NONBLOCK
));
701 nfc_llcp_put_ssap(local
, llcp_sock
->ssap
);
703 nfc_llcp_sock_unlink(&local
->connecting_sockets
, sk
);
713 static int llcp_sock_sendmsg(struct kiocb
*iocb
, struct socket
*sock
,
714 struct msghdr
*msg
, size_t len
)
716 struct sock
*sk
= sock
->sk
;
717 struct nfc_llcp_sock
*llcp_sock
= nfc_llcp_sock(sk
);
720 pr_debug("sock %p sk %p", sock
, sk
);
722 ret
= sock_error(sk
);
726 if (msg
->msg_flags
& MSG_OOB
)
731 if (sk
->sk_type
== SOCK_DGRAM
) {
732 struct sockaddr_nfc_llcp
*addr
=
733 (struct sockaddr_nfc_llcp
*)msg
->msg_name
;
735 if (msg
->msg_namelen
< sizeof(*addr
)) {
742 return nfc_llcp_send_ui_frame(llcp_sock
, addr
->dsap
, addr
->ssap
,
746 if (sk
->sk_state
!= LLCP_CONNECTED
) {
753 return nfc_llcp_send_i_frame(llcp_sock
, msg
, len
);
756 static int llcp_sock_recvmsg(struct kiocb
*iocb
, struct socket
*sock
,
757 struct msghdr
*msg
, size_t len
, int flags
)
759 int noblock
= flags
& MSG_DONTWAIT
;
760 struct sock
*sk
= sock
->sk
;
761 unsigned int copied
, rlen
;
762 struct sk_buff
*skb
, *cskb
;
765 pr_debug("%p %zu\n", sk
, len
);
769 if (sk
->sk_state
== LLCP_CLOSED
&&
770 skb_queue_empty(&sk
->sk_receive_queue
)) {
777 if (flags
& (MSG_OOB
))
780 skb
= skb_recv_datagram(sk
, flags
, noblock
, &err
);
782 pr_err("Recv datagram failed state %d %d %d",
783 sk
->sk_state
, err
, sock_error(sk
));
785 if (sk
->sk_shutdown
& RCV_SHUTDOWN
)
791 rlen
= skb
->len
; /* real length of skb */
792 copied
= min_t(unsigned int, rlen
, len
);
795 if (skb_copy_datagram_iovec(cskb
, 0, msg
->msg_iov
, copied
)) {
796 if (!(flags
& MSG_PEEK
))
797 skb_queue_head(&sk
->sk_receive_queue
, skb
);
801 sock_recv_timestamp(msg
, sk
, skb
);
803 if (sk
->sk_type
== SOCK_DGRAM
&& msg
->msg_name
) {
804 struct nfc_llcp_ui_cb
*ui_cb
= nfc_llcp_ui_skb_cb(skb
);
805 struct sockaddr_nfc_llcp
*sockaddr
=
806 (struct sockaddr_nfc_llcp
*) msg
->msg_name
;
808 msg
->msg_namelen
= sizeof(struct sockaddr_nfc_llcp
);
810 pr_debug("Datagram socket %d %d\n", ui_cb
->dsap
, ui_cb
->ssap
);
812 sockaddr
->sa_family
= AF_NFC
;
813 sockaddr
->nfc_protocol
= NFC_PROTO_NFC_DEP
;
814 sockaddr
->dsap
= ui_cb
->dsap
;
815 sockaddr
->ssap
= ui_cb
->ssap
;
818 /* Mark read part of skb as used */
819 if (!(flags
& MSG_PEEK
)) {
821 /* SOCK_STREAM: re-queue skb if it contains unreceived data */
822 if (sk
->sk_type
== SOCK_STREAM
||
823 sk
->sk_type
== SOCK_DGRAM
||
824 sk
->sk_type
== SOCK_RAW
) {
825 skb_pull(skb
, copied
);
827 skb_queue_head(&sk
->sk_receive_queue
, skb
);
835 /* XXX Queue backlogged skbs */
838 /* SOCK_SEQPACKET: return real length if MSG_TRUNC is set */
839 if (sk
->sk_type
== SOCK_SEQPACKET
&& (flags
& MSG_TRUNC
))
845 static const struct proto_ops llcp_sock_ops
= {
847 .owner
= THIS_MODULE
,
848 .bind
= llcp_sock_bind
,
849 .connect
= llcp_sock_connect
,
850 .release
= llcp_sock_release
,
851 .socketpair
= sock_no_socketpair
,
852 .accept
= llcp_sock_accept
,
853 .getname
= llcp_sock_getname
,
854 .poll
= llcp_sock_poll
,
855 .ioctl
= sock_no_ioctl
,
856 .listen
= llcp_sock_listen
,
857 .shutdown
= sock_no_shutdown
,
858 .setsockopt
= nfc_llcp_setsockopt
,
859 .getsockopt
= nfc_llcp_getsockopt
,
860 .sendmsg
= llcp_sock_sendmsg
,
861 .recvmsg
= llcp_sock_recvmsg
,
862 .mmap
= sock_no_mmap
,
865 static const struct proto_ops llcp_rawsock_ops
= {
867 .owner
= THIS_MODULE
,
868 .bind
= llcp_raw_sock_bind
,
869 .connect
= sock_no_connect
,
870 .release
= llcp_sock_release
,
871 .socketpair
= sock_no_socketpair
,
872 .accept
= sock_no_accept
,
873 .getname
= llcp_sock_getname
,
874 .poll
= llcp_sock_poll
,
875 .ioctl
= sock_no_ioctl
,
876 .listen
= sock_no_listen
,
877 .shutdown
= sock_no_shutdown
,
878 .setsockopt
= sock_no_setsockopt
,
879 .getsockopt
= sock_no_getsockopt
,
880 .sendmsg
= sock_no_sendmsg
,
881 .recvmsg
= llcp_sock_recvmsg
,
882 .mmap
= sock_no_mmap
,
885 static void llcp_sock_destruct(struct sock
*sk
)
887 struct nfc_llcp_sock
*llcp_sock
= nfc_llcp_sock(sk
);
889 pr_debug("%p\n", sk
);
891 if (sk
->sk_state
== LLCP_CONNECTED
)
892 nfc_put_device(llcp_sock
->dev
);
894 skb_queue_purge(&sk
->sk_receive_queue
);
896 nfc_llcp_sock_free(llcp_sock
);
898 if (!sock_flag(sk
, SOCK_DEAD
)) {
899 pr_err("Freeing alive NFC LLCP socket %p\n", sk
);
904 struct sock
*nfc_llcp_sock_alloc(struct socket
*sock
, int type
, gfp_t gfp
)
907 struct nfc_llcp_sock
*llcp_sock
;
909 sk
= sk_alloc(&init_net
, PF_NFC
, gfp
, &llcp_sock_proto
);
913 llcp_sock
= nfc_llcp_sock(sk
);
915 sock_init_data(sock
, sk
);
916 sk
->sk_state
= LLCP_CLOSED
;
917 sk
->sk_protocol
= NFC_SOCKPROTO_LLCP
;
919 sk
->sk_destruct
= llcp_sock_destruct
;
922 llcp_sock
->dsap
= LLCP_SAP_SDP
;
923 llcp_sock
->rw
= LLCP_MAX_RW
+ 1;
924 llcp_sock
->miux
= LLCP_MAX_MIUX
+ 1;
925 llcp_sock
->remote_rw
= LLCP_DEFAULT_RW
;
926 llcp_sock
->remote_miu
= LLCP_DEFAULT_MIU
;
927 llcp_sock
->send_n
= llcp_sock
->send_ack_n
= 0;
928 llcp_sock
->recv_n
= llcp_sock
->recv_ack_n
= 0;
929 llcp_sock
->remote_ready
= 1;
930 llcp_sock
->reserved_ssap
= LLCP_SAP_MAX
;
931 skb_queue_head_init(&llcp_sock
->tx_queue
);
932 skb_queue_head_init(&llcp_sock
->tx_pending_queue
);
933 INIT_LIST_HEAD(&llcp_sock
->accept_queue
);
936 sock
->state
= SS_UNCONNECTED
;
941 void nfc_llcp_sock_free(struct nfc_llcp_sock
*sock
)
943 kfree(sock
->service_name
);
945 skb_queue_purge(&sock
->tx_queue
);
946 skb_queue_purge(&sock
->tx_pending_queue
);
948 list_del_init(&sock
->accept_queue
);
952 nfc_llcp_local_put(sock
->local
);
955 static int llcp_sock_create(struct net
*net
, struct socket
*sock
,
956 const struct nfc_protocol
*nfc_proto
)
960 pr_debug("%p\n", sock
);
962 if (sock
->type
!= SOCK_STREAM
&&
963 sock
->type
!= SOCK_DGRAM
&&
964 sock
->type
!= SOCK_RAW
)
965 return -ESOCKTNOSUPPORT
;
967 if (sock
->type
== SOCK_RAW
)
968 sock
->ops
= &llcp_rawsock_ops
;
970 sock
->ops
= &llcp_sock_ops
;
972 sk
= nfc_llcp_sock_alloc(sock
, sock
->type
, GFP_ATOMIC
);
979 static const struct nfc_protocol llcp_nfc_proto
= {
980 .id
= NFC_SOCKPROTO_LLCP
,
981 .proto
= &llcp_sock_proto
,
982 .owner
= THIS_MODULE
,
983 .create
= llcp_sock_create
986 int __init
nfc_llcp_sock_init(void)
988 return nfc_proto_register(&llcp_nfc_proto
);
991 void nfc_llcp_sock_exit(void)
993 nfc_proto_unregister(&llcp_nfc_proto
);