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>
24 #include <linux/sched/signal.h>
29 static int sock_wait_state(struct sock *sk, int state, unsigned long timeo)
31 DECLARE_WAITQUEUE(wait, current);
34 pr_debug("sk %p", sk);
36 add_wait_queue(sk_sleep(sk), &wait);
37 set_current_state(TASK_INTERRUPTIBLE);
39 while (sk->sk_state != state) {
45 if (signal_pending(current)) {
46 err = sock_intr_errno(timeo);
51 timeo = schedule_timeout(timeo);
53 set_current_state(TASK_INTERRUPTIBLE);
60 __set_current_state(TASK_RUNNING);
61 remove_wait_queue(sk_sleep(sk), &wait);
65 static struct proto llcp_sock_proto = {
68 .obj_size = sizeof(struct nfc_llcp_sock),
71 static int llcp_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
73 struct sock *sk = sock->sk;
74 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
75 struct nfc_llcp_local *local;
77 struct sockaddr_nfc_llcp llcp_addr;
80 if (!addr || 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,
122 llcp_sock->ssap = nfc_llcp_get_sdp_ssap(local, llcp_sock);
123 if (llcp_sock->ssap == LLCP_SAP_MAX) {
128 llcp_sock->reserved_ssap = llcp_sock->ssap;
130 nfc_llcp_sock_link(&local->sockets, sk);
132 pr_debug("Socket bound to SAP %d\n", llcp_sock->ssap);
134 sk->sk_state = LLCP_BOUND;
144 static int llcp_raw_sock_bind(struct socket *sock, struct sockaddr *addr,
147 struct sock *sk = sock->sk;
148 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
149 struct nfc_llcp_local *local;
151 struct sockaddr_nfc_llcp llcp_addr;
154 if (!addr || addr->sa_family != AF_NFC)
157 pr_debug("sk %p addr %p family %d\n", sk, addr, addr->sa_family);
159 memset(&llcp_addr, 0, sizeof(llcp_addr));
160 len = min_t(unsigned int, sizeof(llcp_addr), alen);
161 memcpy(&llcp_addr, addr, len);
165 if (sk->sk_state != LLCP_CLOSED) {
170 dev = nfc_get_device(llcp_addr.dev_idx);
176 local = nfc_llcp_find_local(dev);
182 llcp_sock->dev = dev;
183 llcp_sock->local = nfc_llcp_local_get(local);
184 llcp_sock->nfc_protocol = llcp_addr.nfc_protocol;
186 nfc_llcp_sock_link(&local->raw_sockets, sk);
188 sk->sk_state = LLCP_BOUND;
198 static int llcp_sock_listen(struct socket *sock, int backlog)
200 struct sock *sk = sock->sk;
203 pr_debug("sk %p backlog %d\n", sk, backlog);
207 if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM) ||
208 sk->sk_state != LLCP_BOUND) {
213 sk->sk_max_ack_backlog = backlog;
214 sk->sk_ack_backlog = 0;
216 pr_debug("Socket listening\n");
217 sk->sk_state = LLCP_LISTEN;
225 static int nfc_llcp_setsockopt(struct socket *sock, int level, int optname,
226 char __user *optval, unsigned int optlen)
228 struct sock *sk = sock->sk;
229 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
233 pr_debug("%p optname %d\n", sk, optname);
235 if (level != SOL_NFC)
242 if (sk->sk_state == LLCP_CONNECTED ||
243 sk->sk_state == LLCP_BOUND ||
244 sk->sk_state == LLCP_LISTEN) {
249 if (get_user(opt, (u32 __user *) optval)) {
254 if (opt > LLCP_MAX_RW) {
259 llcp_sock->rw = (u8) opt;
264 if (sk->sk_state == LLCP_CONNECTED ||
265 sk->sk_state == LLCP_BOUND ||
266 sk->sk_state == LLCP_LISTEN) {
271 if (get_user(opt, (u32 __user *) optval)) {
276 if (opt > LLCP_MAX_MIUX) {
281 llcp_sock->miux = cpu_to_be16((u16) opt);
292 pr_debug("%p rw %d miux %d\n", llcp_sock,
293 llcp_sock->rw, llcp_sock->miux);
298 static int nfc_llcp_getsockopt(struct socket *sock, int level, int optname,
299 char __user *optval, int __user *optlen)
301 struct nfc_llcp_local *local;
302 struct sock *sk = sock->sk;
303 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
305 u16 miux, remote_miu;
308 pr_debug("%p optname %d\n", sk, optname);
310 if (level != SOL_NFC)
313 if (get_user(len, optlen))
316 local = llcp_sock->local;
320 len = min_t(u32, len, sizeof(u32));
326 rw = llcp_sock->rw > LLCP_MAX_RW ? local->rw : llcp_sock->rw;
327 if (put_user(rw, (u32 __user *) optval))
333 miux = be16_to_cpu(llcp_sock->miux) > LLCP_MAX_MIUX ?
334 be16_to_cpu(local->miux) : be16_to_cpu(llcp_sock->miux);
336 if (put_user(miux, (u32 __user *) optval))
341 case NFC_LLCP_REMOTE_MIU:
342 remote_miu = llcp_sock->remote_miu > LLCP_MAX_MIU ?
343 local->remote_miu : llcp_sock->remote_miu;
345 if (put_user(remote_miu, (u32 __user *) optval))
350 case NFC_LLCP_REMOTE_LTO:
351 if (put_user(local->remote_lto / 10, (u32 __user *) optval))
356 case NFC_LLCP_REMOTE_RW:
357 if (put_user(llcp_sock->remote_rw, (u32 __user *) optval))
369 if (put_user(len, optlen))
375 void nfc_llcp_accept_unlink(struct sock *sk)
377 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
379 pr_debug("state %d\n", sk->sk_state);
381 list_del_init(&llcp_sock->accept_queue);
382 sk_acceptq_removed(llcp_sock->parent);
383 llcp_sock->parent = NULL;
388 void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk)
390 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
391 struct nfc_llcp_sock *llcp_sock_parent = nfc_llcp_sock(parent);
393 /* Lock will be free from unlink */
396 list_add_tail(&llcp_sock->accept_queue,
397 &llcp_sock_parent->accept_queue);
398 llcp_sock->parent = parent;
399 sk_acceptq_added(parent);
402 struct sock *nfc_llcp_accept_dequeue(struct sock *parent,
403 struct socket *newsock)
405 struct nfc_llcp_sock *lsk, *n, *llcp_parent;
408 llcp_parent = nfc_llcp_sock(parent);
410 list_for_each_entry_safe(lsk, n, &llcp_parent->accept_queue,
415 if (sk->sk_state == LLCP_CLOSED) {
417 nfc_llcp_accept_unlink(sk);
421 if (sk->sk_state == LLCP_CONNECTED || !newsock) {
422 list_del_init(&lsk->accept_queue);
426 sock_graft(sk, newsock);
430 pr_debug("Returning sk state %d\n", sk->sk_state);
432 sk_acceptq_removed(parent);
443 static int llcp_sock_accept(struct socket *sock, struct socket *newsock,
444 int flags, bool kern)
446 DECLARE_WAITQUEUE(wait, current);
447 struct sock *sk = sock->sk, *new_sk;
451 pr_debug("parent %p\n", sk);
453 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
455 if (sk->sk_state != LLCP_LISTEN) {
460 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
462 /* Wait for an incoming connection. */
463 add_wait_queue_exclusive(sk_sleep(sk), &wait);
464 while (!(new_sk = nfc_llcp_accept_dequeue(sk, newsock))) {
465 set_current_state(TASK_INTERRUPTIBLE);
472 if (signal_pending(current)) {
473 ret = sock_intr_errno(timeo);
478 timeo = schedule_timeout(timeo);
479 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
481 __set_current_state(TASK_RUNNING);
482 remove_wait_queue(sk_sleep(sk), &wait);
487 newsock->state = SS_CONNECTED;
489 pr_debug("new socket %p\n", new_sk);
497 static int llcp_sock_getname(struct socket *sock, struct sockaddr *uaddr,
500 struct sock *sk = sock->sk;
501 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
502 DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, llcp_addr, uaddr);
504 if (llcp_sock == NULL || llcp_sock->dev == NULL)
507 pr_debug("%p %d %d %d\n", sk, llcp_sock->target_idx,
508 llcp_sock->dsap, llcp_sock->ssap);
510 memset(llcp_addr, 0, sizeof(*llcp_addr));
511 *len = sizeof(struct sockaddr_nfc_llcp);
514 if (!llcp_sock->dev) {
518 llcp_addr->sa_family = AF_NFC;
519 llcp_addr->dev_idx = llcp_sock->dev->idx;
520 llcp_addr->target_idx = llcp_sock->target_idx;
521 llcp_addr->nfc_protocol = llcp_sock->nfc_protocol;
522 llcp_addr->dsap = llcp_sock->dsap;
523 llcp_addr->ssap = llcp_sock->ssap;
524 llcp_addr->service_name_len = llcp_sock->service_name_len;
525 memcpy(llcp_addr->service_name, llcp_sock->service_name,
526 llcp_addr->service_name_len);
532 static inline unsigned int llcp_accept_poll(struct sock *parent)
534 struct nfc_llcp_sock *llcp_sock, *parent_sock;
537 parent_sock = nfc_llcp_sock(parent);
539 list_for_each_entry(llcp_sock, &parent_sock->accept_queue,
543 if (sk->sk_state == LLCP_CONNECTED)
544 return POLLIN | POLLRDNORM;
550 static unsigned int llcp_sock_poll(struct file *file, struct socket *sock,
553 struct sock *sk = sock->sk;
554 unsigned int mask = 0;
556 pr_debug("%p\n", sk);
558 sock_poll_wait(file, sk_sleep(sk), wait);
560 if (sk->sk_state == LLCP_LISTEN)
561 return llcp_accept_poll(sk);
563 if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
565 (sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? POLLPRI : 0);
567 if (!skb_queue_empty(&sk->sk_receive_queue))
568 mask |= POLLIN | POLLRDNORM;
570 if (sk->sk_state == LLCP_CLOSED)
573 if (sk->sk_shutdown & RCV_SHUTDOWN)
574 mask |= POLLRDHUP | POLLIN | POLLRDNORM;
576 if (sk->sk_shutdown == SHUTDOWN_MASK)
579 if (sock_writeable(sk) && sk->sk_state == LLCP_CONNECTED)
580 mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
582 sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk);
584 pr_debug("mask 0x%x\n", mask);
589 static int llcp_sock_release(struct socket *sock)
591 struct sock *sk = sock->sk;
592 struct nfc_llcp_local *local;
593 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
599 pr_debug("%p\n", sk);
601 local = llcp_sock->local;
610 if (sk->sk_state == LLCP_CONNECTED)
611 nfc_llcp_send_disconnect(llcp_sock);
613 if (sk->sk_state == LLCP_LISTEN) {
614 struct nfc_llcp_sock *lsk, *n;
615 struct sock *accept_sk;
617 list_for_each_entry_safe(lsk, n, &llcp_sock->accept_queue,
619 accept_sk = &lsk->sk;
620 lock_sock(accept_sk);
622 nfc_llcp_send_disconnect(lsk);
623 nfc_llcp_accept_unlink(accept_sk);
625 release_sock(accept_sk);
629 if (llcp_sock->reserved_ssap < LLCP_SAP_MAX)
630 nfc_llcp_put_ssap(llcp_sock->local, llcp_sock->ssap);
634 /* Keep this sock alive and therefore do not remove it from the sockets
635 * list until the DISC PDU has been actually sent. Otherwise we would
636 * reply with DM PDUs before sending the DISC one.
638 if (sk->sk_state == LLCP_DISCONNECTING)
641 if (sock->type == SOCK_RAW)
642 nfc_llcp_sock_unlink(&local->raw_sockets, sk);
644 nfc_llcp_sock_unlink(&local->sockets, sk);
653 static int llcp_sock_connect(struct socket *sock, struct sockaddr *_addr,
656 struct sock *sk = sock->sk;
657 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
658 struct sockaddr_nfc_llcp *addr = (struct sockaddr_nfc_llcp *)_addr;
660 struct nfc_llcp_local *local;
663 pr_debug("sock %p sk %p flags 0x%x\n", sock, sk, flags);
665 if (!addr || len < sizeof(struct sockaddr_nfc) ||
666 addr->sa_family != AF_NFC)
669 if (addr->service_name_len == 0 && addr->dsap == 0)
672 pr_debug("addr dev_idx=%u target_idx=%u protocol=%u\n", addr->dev_idx,
673 addr->target_idx, addr->nfc_protocol);
677 if (sk->sk_state == LLCP_CONNECTED) {
682 dev = nfc_get_device(addr->dev_idx);
688 local = nfc_llcp_find_local(dev);
694 device_lock(&dev->dev);
695 if (dev->dep_link_up == false) {
697 device_unlock(&dev->dev);
700 device_unlock(&dev->dev);
702 if (local->rf_mode == NFC_RF_INITIATOR &&
703 addr->target_idx != local->target_idx) {
708 llcp_sock->dev = dev;
709 llcp_sock->local = nfc_llcp_local_get(local);
710 llcp_sock->ssap = nfc_llcp_get_local_ssap(local);
711 if (llcp_sock->ssap == LLCP_SAP_MAX) {
716 llcp_sock->reserved_ssap = llcp_sock->ssap;
718 if (addr->service_name_len == 0)
719 llcp_sock->dsap = addr->dsap;
721 llcp_sock->dsap = LLCP_SAP_SDP;
722 llcp_sock->nfc_protocol = addr->nfc_protocol;
723 llcp_sock->service_name_len = min_t(unsigned int,
724 addr->service_name_len,
725 NFC_LLCP_MAX_SERVICE_NAME);
726 llcp_sock->service_name = kmemdup(addr->service_name,
727 llcp_sock->service_name_len,
730 nfc_llcp_sock_link(&local->connecting_sockets, sk);
732 ret = nfc_llcp_send_connect(llcp_sock);
736 sk->sk_state = LLCP_CONNECTING;
738 ret = sock_wait_state(sk, LLCP_CONNECTED,
739 sock_sndtimeo(sk, flags & O_NONBLOCK));
740 if (ret && ret != -EINPROGRESS)
748 nfc_llcp_put_ssap(local, llcp_sock->ssap);
750 nfc_llcp_sock_unlink(&local->connecting_sockets, sk);
760 static int llcp_sock_sendmsg(struct socket *sock, struct msghdr *msg,
763 struct sock *sk = sock->sk;
764 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
767 pr_debug("sock %p sk %p", sock, sk);
769 ret = sock_error(sk);
773 if (msg->msg_flags & MSG_OOB)
778 if (sk->sk_type == SOCK_DGRAM) {
779 DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, addr,
782 if (msg->msg_namelen < sizeof(*addr)) {
789 return nfc_llcp_send_ui_frame(llcp_sock, addr->dsap, addr->ssap,
793 if (sk->sk_state != LLCP_CONNECTED) {
800 return nfc_llcp_send_i_frame(llcp_sock, msg, len);
803 static int llcp_sock_recvmsg(struct socket *sock, struct msghdr *msg,
804 size_t len, int flags)
806 int noblock = flags & MSG_DONTWAIT;
807 struct sock *sk = sock->sk;
808 unsigned int copied, rlen;
809 struct sk_buff *skb, *cskb;
812 pr_debug("%p %zu\n", sk, len);
816 if (sk->sk_state == LLCP_CLOSED &&
817 skb_queue_empty(&sk->sk_receive_queue)) {
824 if (flags & (MSG_OOB))
827 skb = skb_recv_datagram(sk, flags, noblock, &err);
829 pr_err("Recv datagram failed state %d %d %d",
830 sk->sk_state, err, sock_error(sk));
832 if (sk->sk_shutdown & RCV_SHUTDOWN)
838 rlen = skb->len; /* real length of skb */
839 copied = min_t(unsigned int, rlen, len);
842 if (skb_copy_datagram_msg(cskb, 0, msg, copied)) {
843 if (!(flags & MSG_PEEK))
844 skb_queue_head(&sk->sk_receive_queue, skb);
848 sock_recv_timestamp(msg, sk, skb);
850 if (sk->sk_type == SOCK_DGRAM && msg->msg_name) {
851 struct nfc_llcp_ui_cb *ui_cb = nfc_llcp_ui_skb_cb(skb);
852 DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, sockaddr,
855 msg->msg_namelen = sizeof(struct sockaddr_nfc_llcp);
857 pr_debug("Datagram socket %d %d\n", ui_cb->dsap, ui_cb->ssap);
859 memset(sockaddr, 0, sizeof(*sockaddr));
860 sockaddr->sa_family = AF_NFC;
861 sockaddr->nfc_protocol = NFC_PROTO_NFC_DEP;
862 sockaddr->dsap = ui_cb->dsap;
863 sockaddr->ssap = ui_cb->ssap;
866 /* Mark read part of skb as used */
867 if (!(flags & MSG_PEEK)) {
869 /* SOCK_STREAM: re-queue skb if it contains unreceived data */
870 if (sk->sk_type == SOCK_STREAM ||
871 sk->sk_type == SOCK_DGRAM ||
872 sk->sk_type == SOCK_RAW) {
873 skb_pull(skb, copied);
875 skb_queue_head(&sk->sk_receive_queue, skb);
883 /* XXX Queue backlogged skbs */
886 /* SOCK_SEQPACKET: return real length if MSG_TRUNC is set */
887 if (sk->sk_type == SOCK_SEQPACKET && (flags & MSG_TRUNC))
893 static const struct proto_ops llcp_sock_ops = {
895 .owner = THIS_MODULE,
896 .bind = llcp_sock_bind,
897 .connect = llcp_sock_connect,
898 .release = llcp_sock_release,
899 .socketpair = sock_no_socketpair,
900 .accept = llcp_sock_accept,
901 .getname = llcp_sock_getname,
902 .poll = llcp_sock_poll,
903 .ioctl = sock_no_ioctl,
904 .listen = llcp_sock_listen,
905 .shutdown = sock_no_shutdown,
906 .setsockopt = nfc_llcp_setsockopt,
907 .getsockopt = nfc_llcp_getsockopt,
908 .sendmsg = llcp_sock_sendmsg,
909 .recvmsg = llcp_sock_recvmsg,
910 .mmap = sock_no_mmap,
913 static const struct proto_ops llcp_rawsock_ops = {
915 .owner = THIS_MODULE,
916 .bind = llcp_raw_sock_bind,
917 .connect = sock_no_connect,
918 .release = llcp_sock_release,
919 .socketpair = sock_no_socketpair,
920 .accept = sock_no_accept,
921 .getname = llcp_sock_getname,
922 .poll = llcp_sock_poll,
923 .ioctl = sock_no_ioctl,
924 .listen = sock_no_listen,
925 .shutdown = sock_no_shutdown,
926 .setsockopt = sock_no_setsockopt,
927 .getsockopt = sock_no_getsockopt,
928 .sendmsg = sock_no_sendmsg,
929 .recvmsg = llcp_sock_recvmsg,
930 .mmap = sock_no_mmap,
933 static void llcp_sock_destruct(struct sock *sk)
935 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
937 pr_debug("%p\n", sk);
939 if (sk->sk_state == LLCP_CONNECTED)
940 nfc_put_device(llcp_sock->dev);
942 skb_queue_purge(&sk->sk_receive_queue);
944 nfc_llcp_sock_free(llcp_sock);
946 if (!sock_flag(sk, SOCK_DEAD)) {
947 pr_err("Freeing alive NFC LLCP socket %p\n", sk);
952 struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp, int kern)
955 struct nfc_llcp_sock *llcp_sock;
957 sk = sk_alloc(&init_net, PF_NFC, gfp, &llcp_sock_proto, kern);
961 llcp_sock = nfc_llcp_sock(sk);
963 sock_init_data(sock, sk);
964 sk->sk_state = LLCP_CLOSED;
965 sk->sk_protocol = NFC_SOCKPROTO_LLCP;
967 sk->sk_destruct = llcp_sock_destruct;
970 llcp_sock->dsap = LLCP_SAP_SDP;
971 llcp_sock->rw = LLCP_MAX_RW + 1;
972 llcp_sock->miux = cpu_to_be16(LLCP_MAX_MIUX + 1);
973 llcp_sock->send_n = llcp_sock->send_ack_n = 0;
974 llcp_sock->recv_n = llcp_sock->recv_ack_n = 0;
975 llcp_sock->remote_ready = 1;
976 llcp_sock->reserved_ssap = LLCP_SAP_MAX;
977 nfc_llcp_socket_remote_param_init(llcp_sock);
978 skb_queue_head_init(&llcp_sock->tx_queue);
979 skb_queue_head_init(&llcp_sock->tx_pending_queue);
980 INIT_LIST_HEAD(&llcp_sock->accept_queue);
983 sock->state = SS_UNCONNECTED;
988 void nfc_llcp_sock_free(struct nfc_llcp_sock *sock)
990 kfree(sock->service_name);
992 skb_queue_purge(&sock->tx_queue);
993 skb_queue_purge(&sock->tx_pending_queue);
995 list_del_init(&sock->accept_queue);
999 nfc_llcp_local_put(sock->local);
1002 static int llcp_sock_create(struct net *net, struct socket *sock,
1003 const struct nfc_protocol *nfc_proto, int kern)
1007 pr_debug("%p\n", sock);
1009 if (sock->type != SOCK_STREAM &&
1010 sock->type != SOCK_DGRAM &&
1011 sock->type != SOCK_RAW)
1012 return -ESOCKTNOSUPPORT;
1014 if (sock->type == SOCK_RAW)
1015 sock->ops = &llcp_rawsock_ops;
1017 sock->ops = &llcp_sock_ops;
1019 sk = nfc_llcp_sock_alloc(sock, sock->type, GFP_ATOMIC, kern);
1026 static const struct nfc_protocol llcp_nfc_proto = {
1027 .id = NFC_SOCKPROTO_LLCP,
1028 .proto = &llcp_sock_proto,
1029 .owner = THIS_MODULE,
1030 .create = llcp_sock_create
1033 int __init nfc_llcp_sock_init(void)
1035 return nfc_proto_register(&llcp_nfc_proto);
1038 void nfc_llcp_sock_exit(void)
1040 nfc_proto_unregister(&llcp_nfc_proto);