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, see <http://www.gnu.org/licenses/>.
18 #define pr_fmt(fmt) "llcp: %s: " fmt, __func__
20 #include <linux/init.h>
21 #include <linux/kernel.h>
22 #include <linux/module.h>
23 #include <linux/nfc.h>
28 static int sock_wait_state(struct sock *sk, int state, unsigned long timeo)
30 DECLARE_WAITQUEUE(wait, current);
33 pr_debug("sk %p", sk);
35 add_wait_queue(sk_sleep(sk), &wait);
36 set_current_state(TASK_INTERRUPTIBLE);
38 while (sk->sk_state != state) {
44 if (signal_pending(current)) {
45 err = sock_intr_errno(timeo);
50 timeo = schedule_timeout(timeo);
52 set_current_state(TASK_INTERRUPTIBLE);
59 __set_current_state(TASK_RUNNING);
60 remove_wait_queue(sk_sleep(sk), &wait);
64 static struct proto llcp_sock_proto = {
67 .obj_size = sizeof(struct nfc_llcp_sock),
70 static int llcp_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
72 struct sock *sk = sock->sk;
73 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
74 struct nfc_llcp_local *local;
76 struct sockaddr_nfc_llcp llcp_addr;
79 if (!addr || alen < offsetofend(struct sockaddr, sa_family) ||
80 addr->sa_family != AF_NFC)
83 pr_debug("sk %p addr %p family %d\n", sk, addr, addr->sa_family);
85 memset(&llcp_addr, 0, sizeof(llcp_addr));
86 len = min_t(unsigned int, sizeof(llcp_addr), alen);
87 memcpy(&llcp_addr, addr, len);
89 /* This is going to be a listening socket, dsap must be 0 */
90 if (llcp_addr.dsap != 0)
95 if (sk->sk_state != LLCP_CLOSED) {
100 dev = nfc_get_device(llcp_addr.dev_idx);
106 local = nfc_llcp_find_local(dev);
112 llcp_sock->dev = dev;
113 llcp_sock->local = nfc_llcp_local_get(local);
114 llcp_sock->nfc_protocol = llcp_addr.nfc_protocol;
115 llcp_sock->service_name_len = min_t(unsigned int,
116 llcp_addr.service_name_len,
117 NFC_LLCP_MAX_SERVICE_NAME);
118 llcp_sock->service_name = kmemdup(llcp_addr.service_name,
119 llcp_sock->service_name_len,
121 if (!llcp_sock->service_name) {
122 nfc_llcp_local_put(llcp_sock->local);
123 llcp_sock->local = NULL;
124 llcp_sock->dev = NULL;
128 llcp_sock->ssap = nfc_llcp_get_sdp_ssap(local, llcp_sock);
129 if (llcp_sock->ssap == LLCP_SAP_MAX) {
130 nfc_llcp_local_put(llcp_sock->local);
131 llcp_sock->local = NULL;
132 kfree(llcp_sock->service_name);
133 llcp_sock->service_name = NULL;
134 llcp_sock->dev = NULL;
139 llcp_sock->reserved_ssap = llcp_sock->ssap;
141 nfc_llcp_sock_link(&local->sockets, sk);
143 pr_debug("Socket bound to SAP %d\n", llcp_sock->ssap);
145 sk->sk_state = LLCP_BOUND;
155 static int llcp_raw_sock_bind(struct socket *sock, struct sockaddr *addr,
158 struct sock *sk = sock->sk;
159 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
160 struct nfc_llcp_local *local;
162 struct sockaddr_nfc_llcp llcp_addr;
165 if (!addr || alen < offsetofend(struct sockaddr, sa_family) ||
166 addr->sa_family != AF_NFC)
169 pr_debug("sk %p addr %p family %d\n", sk, addr, addr->sa_family);
171 memset(&llcp_addr, 0, sizeof(llcp_addr));
172 len = min_t(unsigned int, sizeof(llcp_addr), alen);
173 memcpy(&llcp_addr, addr, len);
177 if (sk->sk_state != LLCP_CLOSED) {
182 dev = nfc_get_device(llcp_addr.dev_idx);
188 local = nfc_llcp_find_local(dev);
194 llcp_sock->dev = dev;
195 llcp_sock->local = nfc_llcp_local_get(local);
196 llcp_sock->nfc_protocol = llcp_addr.nfc_protocol;
198 nfc_llcp_sock_link(&local->raw_sockets, sk);
200 sk->sk_state = LLCP_BOUND;
210 static int llcp_sock_listen(struct socket *sock, int backlog)
212 struct sock *sk = sock->sk;
215 pr_debug("sk %p backlog %d\n", sk, backlog);
219 if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM) ||
220 sk->sk_state != LLCP_BOUND) {
225 sk->sk_max_ack_backlog = backlog;
226 sk->sk_ack_backlog = 0;
228 pr_debug("Socket listening\n");
229 sk->sk_state = LLCP_LISTEN;
237 static int nfc_llcp_setsockopt(struct socket *sock, int level, int optname,
238 char __user *optval, unsigned int optlen)
240 struct sock *sk = sock->sk;
241 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
245 pr_debug("%p optname %d\n", sk, optname);
247 if (level != SOL_NFC)
254 if (sk->sk_state == LLCP_CONNECTED ||
255 sk->sk_state == LLCP_BOUND ||
256 sk->sk_state == LLCP_LISTEN) {
261 if (get_user(opt, (u32 __user *) optval)) {
266 if (opt > LLCP_MAX_RW) {
271 llcp_sock->rw = (u8) opt;
276 if (sk->sk_state == LLCP_CONNECTED ||
277 sk->sk_state == LLCP_BOUND ||
278 sk->sk_state == LLCP_LISTEN) {
283 if (get_user(opt, (u32 __user *) optval)) {
288 if (opt > LLCP_MAX_MIUX) {
293 llcp_sock->miux = cpu_to_be16((u16) opt);
304 pr_debug("%p rw %d miux %d\n", llcp_sock,
305 llcp_sock->rw, llcp_sock->miux);
310 static int nfc_llcp_getsockopt(struct socket *sock, int level, int optname,
311 char __user *optval, int __user *optlen)
313 struct nfc_llcp_local *local;
314 struct sock *sk = sock->sk;
315 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
317 u16 miux, remote_miu;
320 pr_debug("%p optname %d\n", sk, optname);
322 if (level != SOL_NFC)
325 if (get_user(len, optlen))
328 local = llcp_sock->local;
332 len = min_t(u32, len, sizeof(u32));
338 rw = llcp_sock->rw > LLCP_MAX_RW ? local->rw : llcp_sock->rw;
339 if (put_user(rw, (u32 __user *) optval))
345 miux = be16_to_cpu(llcp_sock->miux) > LLCP_MAX_MIUX ?
346 be16_to_cpu(local->miux) : be16_to_cpu(llcp_sock->miux);
348 if (put_user(miux, (u32 __user *) optval))
353 case NFC_LLCP_REMOTE_MIU:
354 remote_miu = llcp_sock->remote_miu > LLCP_MAX_MIU ?
355 local->remote_miu : llcp_sock->remote_miu;
357 if (put_user(remote_miu, (u32 __user *) optval))
362 case NFC_LLCP_REMOTE_LTO:
363 if (put_user(local->remote_lto / 10, (u32 __user *) optval))
368 case NFC_LLCP_REMOTE_RW:
369 if (put_user(llcp_sock->remote_rw, (u32 __user *) optval))
381 if (put_user(len, optlen))
387 void nfc_llcp_accept_unlink(struct sock *sk)
389 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
391 pr_debug("state %d\n", sk->sk_state);
393 list_del_init(&llcp_sock->accept_queue);
394 sk_acceptq_removed(llcp_sock->parent);
395 llcp_sock->parent = NULL;
400 void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk)
402 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
403 struct nfc_llcp_sock *llcp_sock_parent = nfc_llcp_sock(parent);
405 /* Lock will be free from unlink */
408 list_add_tail(&llcp_sock->accept_queue,
409 &llcp_sock_parent->accept_queue);
410 llcp_sock->parent = parent;
411 sk_acceptq_added(parent);
414 struct sock *nfc_llcp_accept_dequeue(struct sock *parent,
415 struct socket *newsock)
417 struct nfc_llcp_sock *lsk, *n, *llcp_parent;
420 llcp_parent = nfc_llcp_sock(parent);
422 list_for_each_entry_safe(lsk, n, &llcp_parent->accept_queue,
427 if (sk->sk_state == LLCP_CLOSED) {
429 nfc_llcp_accept_unlink(sk);
433 if (sk->sk_state == LLCP_CONNECTED || !newsock) {
434 list_del_init(&lsk->accept_queue);
438 sock_graft(sk, newsock);
442 pr_debug("Returning sk state %d\n", sk->sk_state);
444 sk_acceptq_removed(parent);
455 static int llcp_sock_accept(struct socket *sock, struct socket *newsock,
458 DECLARE_WAITQUEUE(wait, current);
459 struct sock *sk = sock->sk, *new_sk;
463 pr_debug("parent %p\n", sk);
465 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
467 if (sk->sk_state != LLCP_LISTEN) {
472 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
474 /* Wait for an incoming connection. */
475 add_wait_queue_exclusive(sk_sleep(sk), &wait);
476 while (!(new_sk = nfc_llcp_accept_dequeue(sk, newsock))) {
477 set_current_state(TASK_INTERRUPTIBLE);
484 if (signal_pending(current)) {
485 ret = sock_intr_errno(timeo);
490 timeo = schedule_timeout(timeo);
491 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
493 __set_current_state(TASK_RUNNING);
494 remove_wait_queue(sk_sleep(sk), &wait);
499 newsock->state = SS_CONNECTED;
501 pr_debug("new socket %p\n", new_sk);
509 static int llcp_sock_getname(struct socket *sock, struct sockaddr *uaddr,
512 struct sock *sk = sock->sk;
513 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
514 DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, llcp_addr, uaddr);
516 if (llcp_sock == NULL || llcp_sock->dev == NULL)
519 pr_debug("%p %d %d %d\n", sk, llcp_sock->target_idx,
520 llcp_sock->dsap, llcp_sock->ssap);
522 memset(llcp_addr, 0, sizeof(*llcp_addr));
523 *len = sizeof(struct sockaddr_nfc_llcp);
525 llcp_addr->sa_family = AF_NFC;
526 llcp_addr->dev_idx = llcp_sock->dev->idx;
527 llcp_addr->target_idx = llcp_sock->target_idx;
528 llcp_addr->nfc_protocol = llcp_sock->nfc_protocol;
529 llcp_addr->dsap = llcp_sock->dsap;
530 llcp_addr->ssap = llcp_sock->ssap;
531 llcp_addr->service_name_len = llcp_sock->service_name_len;
532 memcpy(llcp_addr->service_name, llcp_sock->service_name,
533 llcp_addr->service_name_len);
538 static inline unsigned int llcp_accept_poll(struct sock *parent)
540 struct nfc_llcp_sock *llcp_sock, *parent_sock;
543 parent_sock = nfc_llcp_sock(parent);
545 list_for_each_entry(llcp_sock, &parent_sock->accept_queue,
549 if (sk->sk_state == LLCP_CONNECTED)
550 return POLLIN | POLLRDNORM;
556 static unsigned int llcp_sock_poll(struct file *file, struct socket *sock,
559 struct sock *sk = sock->sk;
560 unsigned int mask = 0;
562 pr_debug("%p\n", sk);
564 sock_poll_wait(file, sk_sleep(sk), wait);
566 if (sk->sk_state == LLCP_LISTEN)
567 return llcp_accept_poll(sk);
569 if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
571 (sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? POLLPRI : 0);
573 if (!skb_queue_empty(&sk->sk_receive_queue))
574 mask |= POLLIN | POLLRDNORM;
576 if (sk->sk_state == LLCP_CLOSED)
579 if (sk->sk_shutdown & RCV_SHUTDOWN)
580 mask |= POLLRDHUP | POLLIN | POLLRDNORM;
582 if (sk->sk_shutdown == SHUTDOWN_MASK)
585 if (sock_writeable(sk) && sk->sk_state == LLCP_CONNECTED)
586 mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
588 sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk);
590 pr_debug("mask 0x%x\n", mask);
595 static int llcp_sock_release(struct socket *sock)
597 struct sock *sk = sock->sk;
598 struct nfc_llcp_local *local;
599 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
605 pr_debug("%p\n", sk);
607 local = llcp_sock->local;
616 if (sk->sk_state == LLCP_CONNECTED)
617 nfc_llcp_send_disconnect(llcp_sock);
619 if (sk->sk_state == LLCP_LISTEN) {
620 struct nfc_llcp_sock *lsk, *n;
621 struct sock *accept_sk;
623 list_for_each_entry_safe(lsk, n, &llcp_sock->accept_queue,
625 accept_sk = &lsk->sk;
626 lock_sock(accept_sk);
628 nfc_llcp_send_disconnect(lsk);
629 nfc_llcp_accept_unlink(accept_sk);
631 release_sock(accept_sk);
635 if (llcp_sock->reserved_ssap < LLCP_SAP_MAX)
636 nfc_llcp_put_ssap(llcp_sock->local, llcp_sock->ssap);
640 /* Keep this sock alive and therefore do not remove it from the sockets
641 * list until the DISC PDU has been actually sent. Otherwise we would
642 * reply with DM PDUs before sending the DISC one.
644 if (sk->sk_state == LLCP_DISCONNECTING)
647 if (sock->type == SOCK_RAW)
648 nfc_llcp_sock_unlink(&local->raw_sockets, sk);
650 nfc_llcp_sock_unlink(&local->sockets, sk);
659 static int llcp_sock_connect(struct socket *sock, struct sockaddr *_addr,
662 struct sock *sk = sock->sk;
663 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
664 struct sockaddr_nfc_llcp *addr = (struct sockaddr_nfc_llcp *)_addr;
666 struct nfc_llcp_local *local;
669 pr_debug("sock %p sk %p flags 0x%x\n", sock, sk, flags);
671 if (!addr || len < sizeof(*addr) || addr->sa_family != AF_NFC)
674 if (addr->service_name_len == 0 && addr->dsap == 0)
677 pr_debug("addr dev_idx=%u target_idx=%u protocol=%u\n", addr->dev_idx,
678 addr->target_idx, addr->nfc_protocol);
682 if (sk->sk_state == LLCP_CONNECTED) {
686 if (sk->sk_state == LLCP_CONNECTING) {
691 dev = nfc_get_device(addr->dev_idx);
697 local = nfc_llcp_find_local(dev);
703 device_lock(&dev->dev);
704 if (dev->dep_link_up == false) {
706 device_unlock(&dev->dev);
709 device_unlock(&dev->dev);
711 if (local->rf_mode == NFC_RF_INITIATOR &&
712 addr->target_idx != local->target_idx) {
717 llcp_sock->dev = dev;
718 llcp_sock->local = nfc_llcp_local_get(local);
719 llcp_sock->ssap = nfc_llcp_get_local_ssap(local);
720 if (llcp_sock->ssap == LLCP_SAP_MAX) {
721 nfc_llcp_local_put(llcp_sock->local);
722 llcp_sock->local = NULL;
727 llcp_sock->reserved_ssap = llcp_sock->ssap;
729 if (addr->service_name_len == 0)
730 llcp_sock->dsap = addr->dsap;
732 llcp_sock->dsap = LLCP_SAP_SDP;
733 llcp_sock->nfc_protocol = addr->nfc_protocol;
734 llcp_sock->service_name_len = min_t(unsigned int,
735 addr->service_name_len,
736 NFC_LLCP_MAX_SERVICE_NAME);
737 llcp_sock->service_name = kmemdup(addr->service_name,
738 llcp_sock->service_name_len,
741 nfc_llcp_sock_link(&local->connecting_sockets, sk);
743 ret = nfc_llcp_send_connect(llcp_sock);
747 sk->sk_state = LLCP_CONNECTING;
749 ret = sock_wait_state(sk, LLCP_CONNECTED,
750 sock_sndtimeo(sk, flags & O_NONBLOCK));
751 if (ret && ret != -EINPROGRESS)
759 nfc_llcp_put_ssap(local, llcp_sock->ssap);
760 nfc_llcp_local_put(llcp_sock->local);
761 llcp_sock->local = NULL;
763 nfc_llcp_sock_unlink(&local->connecting_sockets, sk);
764 kfree(llcp_sock->service_name);
765 llcp_sock->service_name = NULL;
775 static int llcp_sock_sendmsg(struct socket *sock, struct msghdr *msg,
778 struct sock *sk = sock->sk;
779 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
782 pr_debug("sock %p sk %p", sock, sk);
784 ret = sock_error(sk);
788 if (msg->msg_flags & MSG_OOB)
793 if (sk->sk_type == SOCK_DGRAM) {
794 DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, addr,
797 if (msg->msg_namelen < sizeof(*addr)) {
804 return nfc_llcp_send_ui_frame(llcp_sock, addr->dsap, addr->ssap,
808 if (sk->sk_state != LLCP_CONNECTED) {
815 return nfc_llcp_send_i_frame(llcp_sock, msg, len);
818 static int llcp_sock_recvmsg(struct socket *sock, struct msghdr *msg,
819 size_t len, int flags)
821 int noblock = flags & MSG_DONTWAIT;
822 struct sock *sk = sock->sk;
823 unsigned int copied, rlen;
824 struct sk_buff *skb, *cskb;
827 pr_debug("%p %zu\n", sk, len);
831 if (sk->sk_state == LLCP_CLOSED &&
832 skb_queue_empty(&sk->sk_receive_queue)) {
839 if (flags & (MSG_OOB))
842 skb = skb_recv_datagram(sk, flags, noblock, &err);
844 pr_err("Recv datagram failed state %d %d %d",
845 sk->sk_state, err, sock_error(sk));
847 if (sk->sk_shutdown & RCV_SHUTDOWN)
853 rlen = skb->len; /* real length of skb */
854 copied = min_t(unsigned int, rlen, len);
857 if (skb_copy_datagram_msg(cskb, 0, msg, copied)) {
858 if (!(flags & MSG_PEEK))
859 skb_queue_head(&sk->sk_receive_queue, skb);
863 sock_recv_timestamp(msg, sk, skb);
865 if (sk->sk_type == SOCK_DGRAM && msg->msg_name) {
866 struct nfc_llcp_ui_cb *ui_cb = nfc_llcp_ui_skb_cb(skb);
867 DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, sockaddr,
870 msg->msg_namelen = sizeof(struct sockaddr_nfc_llcp);
872 pr_debug("Datagram socket %d %d\n", ui_cb->dsap, ui_cb->ssap);
874 memset(sockaddr, 0, sizeof(*sockaddr));
875 sockaddr->sa_family = AF_NFC;
876 sockaddr->nfc_protocol = NFC_PROTO_NFC_DEP;
877 sockaddr->dsap = ui_cb->dsap;
878 sockaddr->ssap = ui_cb->ssap;
881 /* Mark read part of skb as used */
882 if (!(flags & MSG_PEEK)) {
884 /* SOCK_STREAM: re-queue skb if it contains unreceived data */
885 if (sk->sk_type == SOCK_STREAM ||
886 sk->sk_type == SOCK_DGRAM ||
887 sk->sk_type == SOCK_RAW) {
888 skb_pull(skb, copied);
890 skb_queue_head(&sk->sk_receive_queue, skb);
898 /* XXX Queue backlogged skbs */
901 /* SOCK_SEQPACKET: return real length if MSG_TRUNC is set */
902 if (sk->sk_type == SOCK_SEQPACKET && (flags & MSG_TRUNC))
908 static const struct proto_ops llcp_sock_ops = {
910 .owner = THIS_MODULE,
911 .bind = llcp_sock_bind,
912 .connect = llcp_sock_connect,
913 .release = llcp_sock_release,
914 .socketpair = sock_no_socketpair,
915 .accept = llcp_sock_accept,
916 .getname = llcp_sock_getname,
917 .poll = llcp_sock_poll,
918 .ioctl = sock_no_ioctl,
919 .listen = llcp_sock_listen,
920 .shutdown = sock_no_shutdown,
921 .setsockopt = nfc_llcp_setsockopt,
922 .getsockopt = nfc_llcp_getsockopt,
923 .sendmsg = llcp_sock_sendmsg,
924 .recvmsg = llcp_sock_recvmsg,
925 .mmap = sock_no_mmap,
928 static const struct proto_ops llcp_rawsock_ops = {
930 .owner = THIS_MODULE,
931 .bind = llcp_raw_sock_bind,
932 .connect = sock_no_connect,
933 .release = llcp_sock_release,
934 .socketpair = sock_no_socketpair,
935 .accept = sock_no_accept,
936 .getname = llcp_sock_getname,
937 .poll = llcp_sock_poll,
938 .ioctl = sock_no_ioctl,
939 .listen = sock_no_listen,
940 .shutdown = sock_no_shutdown,
941 .setsockopt = sock_no_setsockopt,
942 .getsockopt = sock_no_getsockopt,
943 .sendmsg = sock_no_sendmsg,
944 .recvmsg = llcp_sock_recvmsg,
945 .mmap = sock_no_mmap,
948 static void llcp_sock_destruct(struct sock *sk)
950 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
952 pr_debug("%p\n", sk);
954 if (sk->sk_state == LLCP_CONNECTED)
955 nfc_put_device(llcp_sock->dev);
957 skb_queue_purge(&sk->sk_receive_queue);
959 nfc_llcp_sock_free(llcp_sock);
961 if (!sock_flag(sk, SOCK_DEAD)) {
962 pr_err("Freeing alive NFC LLCP socket %p\n", sk);
967 struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp, int kern)
970 struct nfc_llcp_sock *llcp_sock;
972 sk = sk_alloc(&init_net, PF_NFC, gfp, &llcp_sock_proto, kern);
976 llcp_sock = nfc_llcp_sock(sk);
978 sock_init_data(sock, sk);
979 sk->sk_state = LLCP_CLOSED;
980 sk->sk_protocol = NFC_SOCKPROTO_LLCP;
982 sk->sk_destruct = llcp_sock_destruct;
985 llcp_sock->dsap = LLCP_SAP_SDP;
986 llcp_sock->rw = LLCP_MAX_RW + 1;
987 llcp_sock->miux = cpu_to_be16(LLCP_MAX_MIUX + 1);
988 llcp_sock->send_n = llcp_sock->send_ack_n = 0;
989 llcp_sock->recv_n = llcp_sock->recv_ack_n = 0;
990 llcp_sock->remote_ready = 1;
991 llcp_sock->reserved_ssap = LLCP_SAP_MAX;
992 nfc_llcp_socket_remote_param_init(llcp_sock);
993 skb_queue_head_init(&llcp_sock->tx_queue);
994 skb_queue_head_init(&llcp_sock->tx_pending_queue);
995 INIT_LIST_HEAD(&llcp_sock->accept_queue);
998 sock->state = SS_UNCONNECTED;
1003 void nfc_llcp_sock_free(struct nfc_llcp_sock *sock)
1005 kfree(sock->service_name);
1007 skb_queue_purge(&sock->tx_queue);
1008 skb_queue_purge(&sock->tx_pending_queue);
1010 list_del_init(&sock->accept_queue);
1012 sock->parent = NULL;
1014 nfc_llcp_local_put(sock->local);
1017 static int llcp_sock_create(struct net *net, struct socket *sock,
1018 const struct nfc_protocol *nfc_proto, int kern)
1022 pr_debug("%p\n", sock);
1024 if (sock->type != SOCK_STREAM &&
1025 sock->type != SOCK_DGRAM &&
1026 sock->type != SOCK_RAW)
1027 return -ESOCKTNOSUPPORT;
1029 if (sock->type == SOCK_RAW) {
1030 if (!capable(CAP_NET_RAW))
1032 sock->ops = &llcp_rawsock_ops;
1034 sock->ops = &llcp_sock_ops;
1037 sk = nfc_llcp_sock_alloc(sock, sock->type, GFP_ATOMIC, kern);
1044 static const struct nfc_protocol llcp_nfc_proto = {
1045 .id = NFC_SOCKPROTO_LLCP,
1046 .proto = &llcp_sock_proto,
1047 .owner = THIS_MODULE,
1048 .create = llcp_sock_create
1051 int __init nfc_llcp_sock_init(void)
1053 return nfc_proto_register(&llcp_nfc_proto);
1056 void nfc_llcp_sock_exit(void)
1058 nfc_proto_unregister(&llcp_nfc_proto);