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 || addr->sa_family != AF_NFC)
82 pr_debug("sk %p addr %p family %d\n", sk, addr, addr->sa_family);
84 memset(&llcp_addr, 0, sizeof(llcp_addr));
85 len = min_t(unsigned int, sizeof(llcp_addr), alen);
86 memcpy(&llcp_addr, addr, len);
88 /* This is going to be a listening socket, dsap must be 0 */
89 if (llcp_addr.dsap != 0)
94 if (sk->sk_state != LLCP_CLOSED) {
99 dev = nfc_get_device(llcp_addr.dev_idx);
105 local = nfc_llcp_find_local(dev);
111 llcp_sock->dev = dev;
112 llcp_sock->local = nfc_llcp_local_get(local);
113 llcp_sock->nfc_protocol = llcp_addr.nfc_protocol;
114 llcp_sock->service_name_len = min_t(unsigned int,
115 llcp_addr.service_name_len,
116 NFC_LLCP_MAX_SERVICE_NAME);
117 llcp_sock->service_name = kmemdup(llcp_addr.service_name,
118 llcp_sock->service_name_len,
121 llcp_sock->ssap = nfc_llcp_get_sdp_ssap(local, llcp_sock);
122 if (llcp_sock->ssap == LLCP_SAP_MAX) {
127 llcp_sock->reserved_ssap = llcp_sock->ssap;
129 nfc_llcp_sock_link(&local->sockets, sk);
131 pr_debug("Socket bound to SAP %d\n", llcp_sock->ssap);
133 sk->sk_state = LLCP_BOUND;
143 static int llcp_raw_sock_bind(struct socket *sock, struct sockaddr *addr,
146 struct sock *sk = sock->sk;
147 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
148 struct nfc_llcp_local *local;
150 struct sockaddr_nfc_llcp llcp_addr;
153 if (!addr || addr->sa_family != AF_NFC)
156 pr_debug("sk %p addr %p family %d\n", sk, addr, addr->sa_family);
158 memset(&llcp_addr, 0, sizeof(llcp_addr));
159 len = min_t(unsigned int, sizeof(llcp_addr), alen);
160 memcpy(&llcp_addr, addr, len);
164 if (sk->sk_state != LLCP_CLOSED) {
169 dev = nfc_get_device(llcp_addr.dev_idx);
175 local = nfc_llcp_find_local(dev);
181 llcp_sock->dev = dev;
182 llcp_sock->local = nfc_llcp_local_get(local);
183 llcp_sock->nfc_protocol = llcp_addr.nfc_protocol;
185 nfc_llcp_sock_link(&local->raw_sockets, sk);
187 sk->sk_state = LLCP_BOUND;
197 static int llcp_sock_listen(struct socket *sock, int backlog)
199 struct sock *sk = sock->sk;
202 pr_debug("sk %p backlog %d\n", sk, backlog);
206 if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM) ||
207 sk->sk_state != LLCP_BOUND) {
212 sk->sk_max_ack_backlog = backlog;
213 sk->sk_ack_backlog = 0;
215 pr_debug("Socket listening\n");
216 sk->sk_state = LLCP_LISTEN;
224 static int nfc_llcp_setsockopt(struct socket *sock, int level, int optname,
225 char __user *optval, unsigned int optlen)
227 struct sock *sk = sock->sk;
228 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
232 pr_debug("%p optname %d\n", sk, optname);
234 if (level != SOL_NFC)
241 if (sk->sk_state == LLCP_CONNECTED ||
242 sk->sk_state == LLCP_BOUND ||
243 sk->sk_state == LLCP_LISTEN) {
248 if (get_user(opt, (u32 __user *) optval)) {
253 if (opt > LLCP_MAX_RW) {
258 llcp_sock->rw = (u8) opt;
263 if (sk->sk_state == LLCP_CONNECTED ||
264 sk->sk_state == LLCP_BOUND ||
265 sk->sk_state == LLCP_LISTEN) {
270 if (get_user(opt, (u32 __user *) optval)) {
275 if (opt > LLCP_MAX_MIUX) {
280 llcp_sock->miux = cpu_to_be16((u16) opt);
291 pr_debug("%p rw %d miux %d\n", llcp_sock,
292 llcp_sock->rw, llcp_sock->miux);
297 static int nfc_llcp_getsockopt(struct socket *sock, int level, int optname,
298 char __user *optval, int __user *optlen)
300 struct nfc_llcp_local *local;
301 struct sock *sk = sock->sk;
302 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
304 u16 miux, remote_miu;
307 pr_debug("%p optname %d\n", sk, optname);
309 if (level != SOL_NFC)
312 if (get_user(len, optlen))
315 local = llcp_sock->local;
319 len = min_t(u32, len, sizeof(u32));
325 rw = llcp_sock->rw > LLCP_MAX_RW ? local->rw : llcp_sock->rw;
326 if (put_user(rw, (u32 __user *) optval))
332 miux = be16_to_cpu(llcp_sock->miux) > LLCP_MAX_MIUX ?
333 be16_to_cpu(local->miux) : be16_to_cpu(llcp_sock->miux);
335 if (put_user(miux, (u32 __user *) optval))
340 case NFC_LLCP_REMOTE_MIU:
341 remote_miu = llcp_sock->remote_miu > LLCP_MAX_MIU ?
342 local->remote_miu : llcp_sock->remote_miu;
344 if (put_user(remote_miu, (u32 __user *) optval))
349 case NFC_LLCP_REMOTE_LTO:
350 if (put_user(local->remote_lto / 10, (u32 __user *) optval))
355 case NFC_LLCP_REMOTE_RW:
356 if (put_user(llcp_sock->remote_rw, (u32 __user *) optval))
368 if (put_user(len, optlen))
374 void nfc_llcp_accept_unlink(struct sock *sk)
376 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
378 pr_debug("state %d\n", sk->sk_state);
380 list_del_init(&llcp_sock->accept_queue);
381 sk_acceptq_removed(llcp_sock->parent);
382 llcp_sock->parent = NULL;
387 void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk)
389 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
390 struct nfc_llcp_sock *llcp_sock_parent = nfc_llcp_sock(parent);
392 /* Lock will be free from unlink */
395 list_add_tail(&llcp_sock->accept_queue,
396 &llcp_sock_parent->accept_queue);
397 llcp_sock->parent = parent;
398 sk_acceptq_added(parent);
401 struct sock *nfc_llcp_accept_dequeue(struct sock *parent,
402 struct socket *newsock)
404 struct nfc_llcp_sock *lsk, *n, *llcp_parent;
407 llcp_parent = nfc_llcp_sock(parent);
409 list_for_each_entry_safe(lsk, n, &llcp_parent->accept_queue,
414 if (sk->sk_state == LLCP_CLOSED) {
416 nfc_llcp_accept_unlink(sk);
420 if (sk->sk_state == LLCP_CONNECTED || !newsock) {
421 list_del_init(&lsk->accept_queue);
425 sock_graft(sk, newsock);
429 pr_debug("Returning sk state %d\n", sk->sk_state);
431 sk_acceptq_removed(parent);
442 static int llcp_sock_accept(struct socket *sock, struct socket *newsock,
445 DECLARE_WAITQUEUE(wait, current);
446 struct sock *sk = sock->sk, *new_sk;
450 pr_debug("parent %p\n", sk);
452 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
454 if (sk->sk_state != LLCP_LISTEN) {
459 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
461 /* Wait for an incoming connection. */
462 add_wait_queue_exclusive(sk_sleep(sk), &wait);
463 while (!(new_sk = nfc_llcp_accept_dequeue(sk, newsock))) {
464 set_current_state(TASK_INTERRUPTIBLE);
471 if (signal_pending(current)) {
472 ret = sock_intr_errno(timeo);
477 timeo = schedule_timeout(timeo);
478 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
480 __set_current_state(TASK_RUNNING);
481 remove_wait_queue(sk_sleep(sk), &wait);
486 newsock->state = SS_CONNECTED;
488 pr_debug("new socket %p\n", new_sk);
496 static int llcp_sock_getname(struct socket *sock, struct sockaddr *uaddr,
499 struct sock *sk = sock->sk;
500 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
501 DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, llcp_addr, uaddr);
503 if (llcp_sock == NULL || llcp_sock->dev == NULL)
506 pr_debug("%p %d %d %d\n", sk, llcp_sock->target_idx,
507 llcp_sock->dsap, llcp_sock->ssap);
509 memset(llcp_addr, 0, sizeof(*llcp_addr));
510 *len = sizeof(struct sockaddr_nfc_llcp);
513 if (!llcp_sock->dev) {
517 llcp_addr->sa_family = AF_NFC;
518 llcp_addr->dev_idx = llcp_sock->dev->idx;
519 llcp_addr->target_idx = llcp_sock->target_idx;
520 llcp_addr->nfc_protocol = llcp_sock->nfc_protocol;
521 llcp_addr->dsap = llcp_sock->dsap;
522 llcp_addr->ssap = llcp_sock->ssap;
523 llcp_addr->service_name_len = llcp_sock->service_name_len;
524 memcpy(llcp_addr->service_name, llcp_sock->service_name,
525 llcp_addr->service_name_len);
531 static inline unsigned int llcp_accept_poll(struct sock *parent)
533 struct nfc_llcp_sock *llcp_sock, *parent_sock;
536 parent_sock = nfc_llcp_sock(parent);
538 list_for_each_entry(llcp_sock, &parent_sock->accept_queue,
542 if (sk->sk_state == LLCP_CONNECTED)
543 return POLLIN | POLLRDNORM;
549 static unsigned int llcp_sock_poll(struct file *file, struct socket *sock,
552 struct sock *sk = sock->sk;
553 unsigned int mask = 0;
555 pr_debug("%p\n", sk);
557 sock_poll_wait(file, sk_sleep(sk), wait);
559 if (sk->sk_state == LLCP_LISTEN)
560 return llcp_accept_poll(sk);
562 if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
564 (sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? POLLPRI : 0);
566 if (!skb_queue_empty(&sk->sk_receive_queue))
567 mask |= POLLIN | POLLRDNORM;
569 if (sk->sk_state == LLCP_CLOSED)
572 if (sk->sk_shutdown & RCV_SHUTDOWN)
573 mask |= POLLRDHUP | POLLIN | POLLRDNORM;
575 if (sk->sk_shutdown == SHUTDOWN_MASK)
578 if (sock_writeable(sk) && sk->sk_state == LLCP_CONNECTED)
579 mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
581 sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk);
583 pr_debug("mask 0x%x\n", mask);
588 static int llcp_sock_release(struct socket *sock)
590 struct sock *sk = sock->sk;
591 struct nfc_llcp_local *local;
592 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
598 pr_debug("%p\n", sk);
600 local = llcp_sock->local;
609 if (sk->sk_state == LLCP_CONNECTED)
610 nfc_llcp_send_disconnect(llcp_sock);
612 if (sk->sk_state == LLCP_LISTEN) {
613 struct nfc_llcp_sock *lsk, *n;
614 struct sock *accept_sk;
616 list_for_each_entry_safe(lsk, n, &llcp_sock->accept_queue,
618 accept_sk = &lsk->sk;
619 lock_sock(accept_sk);
621 nfc_llcp_send_disconnect(lsk);
622 nfc_llcp_accept_unlink(accept_sk);
624 release_sock(accept_sk);
628 if (llcp_sock->reserved_ssap < LLCP_SAP_MAX)
629 nfc_llcp_put_ssap(llcp_sock->local, llcp_sock->ssap);
633 /* Keep this sock alive and therefore do not remove it from the sockets
634 * list until the DISC PDU has been actually sent. Otherwise we would
635 * reply with DM PDUs before sending the DISC one.
637 if (sk->sk_state == LLCP_DISCONNECTING)
640 if (sock->type == SOCK_RAW)
641 nfc_llcp_sock_unlink(&local->raw_sockets, sk);
643 nfc_llcp_sock_unlink(&local->sockets, sk);
652 static int llcp_sock_connect(struct socket *sock, struct sockaddr *_addr,
655 struct sock *sk = sock->sk;
656 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
657 struct sockaddr_nfc_llcp *addr = (struct sockaddr_nfc_llcp *)_addr;
659 struct nfc_llcp_local *local;
662 pr_debug("sock %p sk %p flags 0x%x\n", sock, sk, flags);
664 if (!addr || len < sizeof(struct sockaddr_nfc) ||
665 addr->sa_family != AF_NFC)
668 if (addr->service_name_len == 0 && addr->dsap == 0)
671 pr_debug("addr dev_idx=%u target_idx=%u protocol=%u\n", addr->dev_idx,
672 addr->target_idx, addr->nfc_protocol);
676 if (sk->sk_state == LLCP_CONNECTED) {
681 dev = nfc_get_device(addr->dev_idx);
687 local = nfc_llcp_find_local(dev);
693 device_lock(&dev->dev);
694 if (dev->dep_link_up == false) {
696 device_unlock(&dev->dev);
699 device_unlock(&dev->dev);
701 if (local->rf_mode == NFC_RF_INITIATOR &&
702 addr->target_idx != local->target_idx) {
707 llcp_sock->dev = dev;
708 llcp_sock->local = nfc_llcp_local_get(local);
709 llcp_sock->ssap = nfc_llcp_get_local_ssap(local);
710 if (llcp_sock->ssap == LLCP_SAP_MAX) {
715 llcp_sock->reserved_ssap = llcp_sock->ssap;
717 if (addr->service_name_len == 0)
718 llcp_sock->dsap = addr->dsap;
720 llcp_sock->dsap = LLCP_SAP_SDP;
721 llcp_sock->nfc_protocol = addr->nfc_protocol;
722 llcp_sock->service_name_len = min_t(unsigned int,
723 addr->service_name_len,
724 NFC_LLCP_MAX_SERVICE_NAME);
725 llcp_sock->service_name = kmemdup(addr->service_name,
726 llcp_sock->service_name_len,
729 nfc_llcp_sock_link(&local->connecting_sockets, sk);
731 ret = nfc_llcp_send_connect(llcp_sock);
735 sk->sk_state = LLCP_CONNECTING;
737 ret = sock_wait_state(sk, LLCP_CONNECTED,
738 sock_sndtimeo(sk, flags & O_NONBLOCK));
739 if (ret && ret != -EINPROGRESS)
747 nfc_llcp_put_ssap(local, llcp_sock->ssap);
749 nfc_llcp_sock_unlink(&local->connecting_sockets, sk);
759 static int llcp_sock_sendmsg(struct socket *sock, struct msghdr *msg,
762 struct sock *sk = sock->sk;
763 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
766 pr_debug("sock %p sk %p", sock, sk);
768 ret = sock_error(sk);
772 if (msg->msg_flags & MSG_OOB)
777 if (sk->sk_type == SOCK_DGRAM) {
778 DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, addr,
781 if (msg->msg_namelen < sizeof(*addr)) {
788 return nfc_llcp_send_ui_frame(llcp_sock, addr->dsap, addr->ssap,
792 if (sk->sk_state != LLCP_CONNECTED) {
799 return nfc_llcp_send_i_frame(llcp_sock, msg, len);
802 static int llcp_sock_recvmsg(struct socket *sock, struct msghdr *msg,
803 size_t len, int flags)
805 int noblock = flags & MSG_DONTWAIT;
806 struct sock *sk = sock->sk;
807 unsigned int copied, rlen;
808 struct sk_buff *skb, *cskb;
811 pr_debug("%p %zu\n", sk, len);
815 if (sk->sk_state == LLCP_CLOSED &&
816 skb_queue_empty(&sk->sk_receive_queue)) {
823 if (flags & (MSG_OOB))
826 skb = skb_recv_datagram(sk, flags, noblock, &err);
828 pr_err("Recv datagram failed state %d %d %d",
829 sk->sk_state, err, sock_error(sk));
831 if (sk->sk_shutdown & RCV_SHUTDOWN)
837 rlen = skb->len; /* real length of skb */
838 copied = min_t(unsigned int, rlen, len);
841 if (skb_copy_datagram_msg(cskb, 0, msg, copied)) {
842 if (!(flags & MSG_PEEK))
843 skb_queue_head(&sk->sk_receive_queue, skb);
847 sock_recv_timestamp(msg, sk, skb);
849 if (sk->sk_type == SOCK_DGRAM && msg->msg_name) {
850 struct nfc_llcp_ui_cb *ui_cb = nfc_llcp_ui_skb_cb(skb);
851 DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, sockaddr,
854 msg->msg_namelen = sizeof(struct sockaddr_nfc_llcp);
856 pr_debug("Datagram socket %d %d\n", ui_cb->dsap, ui_cb->ssap);
858 memset(sockaddr, 0, sizeof(*sockaddr));
859 sockaddr->sa_family = AF_NFC;
860 sockaddr->nfc_protocol = NFC_PROTO_NFC_DEP;
861 sockaddr->dsap = ui_cb->dsap;
862 sockaddr->ssap = ui_cb->ssap;
865 /* Mark read part of skb as used */
866 if (!(flags & MSG_PEEK)) {
868 /* SOCK_STREAM: re-queue skb if it contains unreceived data */
869 if (sk->sk_type == SOCK_STREAM ||
870 sk->sk_type == SOCK_DGRAM ||
871 sk->sk_type == SOCK_RAW) {
872 skb_pull(skb, copied);
874 skb_queue_head(&sk->sk_receive_queue, skb);
882 /* XXX Queue backlogged skbs */
885 /* SOCK_SEQPACKET: return real length if MSG_TRUNC is set */
886 if (sk->sk_type == SOCK_SEQPACKET && (flags & MSG_TRUNC))
892 static const struct proto_ops llcp_sock_ops = {
894 .owner = THIS_MODULE,
895 .bind = llcp_sock_bind,
896 .connect = llcp_sock_connect,
897 .release = llcp_sock_release,
898 .socketpair = sock_no_socketpair,
899 .accept = llcp_sock_accept,
900 .getname = llcp_sock_getname,
901 .poll = llcp_sock_poll,
902 .ioctl = sock_no_ioctl,
903 .listen = llcp_sock_listen,
904 .shutdown = sock_no_shutdown,
905 .setsockopt = nfc_llcp_setsockopt,
906 .getsockopt = nfc_llcp_getsockopt,
907 .sendmsg = llcp_sock_sendmsg,
908 .recvmsg = llcp_sock_recvmsg,
909 .mmap = sock_no_mmap,
912 static const struct proto_ops llcp_rawsock_ops = {
914 .owner = THIS_MODULE,
915 .bind = llcp_raw_sock_bind,
916 .connect = sock_no_connect,
917 .release = llcp_sock_release,
918 .socketpair = sock_no_socketpair,
919 .accept = sock_no_accept,
920 .getname = llcp_sock_getname,
921 .poll = llcp_sock_poll,
922 .ioctl = sock_no_ioctl,
923 .listen = sock_no_listen,
924 .shutdown = sock_no_shutdown,
925 .setsockopt = sock_no_setsockopt,
926 .getsockopt = sock_no_getsockopt,
927 .sendmsg = sock_no_sendmsg,
928 .recvmsg = llcp_sock_recvmsg,
929 .mmap = sock_no_mmap,
932 static void llcp_sock_destruct(struct sock *sk)
934 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
936 pr_debug("%p\n", sk);
938 if (sk->sk_state == LLCP_CONNECTED)
939 nfc_put_device(llcp_sock->dev);
941 skb_queue_purge(&sk->sk_receive_queue);
943 nfc_llcp_sock_free(llcp_sock);
945 if (!sock_flag(sk, SOCK_DEAD)) {
946 pr_err("Freeing alive NFC LLCP socket %p\n", sk);
951 struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp, int kern)
954 struct nfc_llcp_sock *llcp_sock;
956 sk = sk_alloc(&init_net, PF_NFC, gfp, &llcp_sock_proto, kern);
960 llcp_sock = nfc_llcp_sock(sk);
962 sock_init_data(sock, sk);
963 sk->sk_state = LLCP_CLOSED;
964 sk->sk_protocol = NFC_SOCKPROTO_LLCP;
966 sk->sk_destruct = llcp_sock_destruct;
969 llcp_sock->dsap = LLCP_SAP_SDP;
970 llcp_sock->rw = LLCP_MAX_RW + 1;
971 llcp_sock->miux = cpu_to_be16(LLCP_MAX_MIUX + 1);
972 llcp_sock->send_n = llcp_sock->send_ack_n = 0;
973 llcp_sock->recv_n = llcp_sock->recv_ack_n = 0;
974 llcp_sock->remote_ready = 1;
975 llcp_sock->reserved_ssap = LLCP_SAP_MAX;
976 nfc_llcp_socket_remote_param_init(llcp_sock);
977 skb_queue_head_init(&llcp_sock->tx_queue);
978 skb_queue_head_init(&llcp_sock->tx_pending_queue);
979 INIT_LIST_HEAD(&llcp_sock->accept_queue);
982 sock->state = SS_UNCONNECTED;
987 void nfc_llcp_sock_free(struct nfc_llcp_sock *sock)
989 kfree(sock->service_name);
991 skb_queue_purge(&sock->tx_queue);
992 skb_queue_purge(&sock->tx_pending_queue);
994 list_del_init(&sock->accept_queue);
998 nfc_llcp_local_put(sock->local);
1001 static int llcp_sock_create(struct net *net, struct socket *sock,
1002 const struct nfc_protocol *nfc_proto, int kern)
1006 pr_debug("%p\n", sock);
1008 if (sock->type != SOCK_STREAM &&
1009 sock->type != SOCK_DGRAM &&
1010 sock->type != SOCK_RAW)
1011 return -ESOCKTNOSUPPORT;
1013 if (sock->type == SOCK_RAW)
1014 sock->ops = &llcp_rawsock_ops;
1016 sock->ops = &llcp_sock_ops;
1018 sk = nfc_llcp_sock_alloc(sock, sock->type, GFP_ATOMIC, kern);
1025 static const struct nfc_protocol llcp_nfc_proto = {
1026 .id = NFC_SOCKPROTO_LLCP,
1027 .proto = &llcp_sock_proto,
1028 .owner = THIS_MODULE,
1029 .create = llcp_sock_create
1032 int __init nfc_llcp_sock_init(void)
1034 return nfc_proto_register(&llcp_nfc_proto);
1037 void nfc_llcp_sock_exit(void)
1039 nfc_proto_unregister(&llcp_nfc_proto);