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);
512 llcp_addr->sa_family = AF_NFC;
513 llcp_addr->dev_idx = llcp_sock->dev->idx;
514 llcp_addr->target_idx = llcp_sock->target_idx;
515 llcp_addr->nfc_protocol = llcp_sock->nfc_protocol;
516 llcp_addr->dsap = llcp_sock->dsap;
517 llcp_addr->ssap = llcp_sock->ssap;
518 llcp_addr->service_name_len = llcp_sock->service_name_len;
519 memcpy(llcp_addr->service_name, llcp_sock->service_name,
520 llcp_addr->service_name_len);
525 static inline unsigned int llcp_accept_poll(struct sock *parent)
527 struct nfc_llcp_sock *llcp_sock, *n, *parent_sock;
530 parent_sock = nfc_llcp_sock(parent);
532 list_for_each_entry_safe(llcp_sock, n, &parent_sock->accept_queue,
536 if (sk->sk_state == LLCP_CONNECTED)
537 return POLLIN | POLLRDNORM;
543 static unsigned int llcp_sock_poll(struct file *file, struct socket *sock,
546 struct sock *sk = sock->sk;
547 unsigned int mask = 0;
549 pr_debug("%p\n", sk);
551 sock_poll_wait(file, sk_sleep(sk), wait);
553 if (sk->sk_state == LLCP_LISTEN)
554 return llcp_accept_poll(sk);
556 if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
558 (sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? POLLPRI : 0);
560 if (!skb_queue_empty(&sk->sk_receive_queue))
561 mask |= POLLIN | POLLRDNORM;
563 if (sk->sk_state == LLCP_CLOSED)
566 if (sk->sk_shutdown & RCV_SHUTDOWN)
567 mask |= POLLRDHUP | POLLIN | POLLRDNORM;
569 if (sk->sk_shutdown == SHUTDOWN_MASK)
572 if (sock_writeable(sk) && sk->sk_state == LLCP_CONNECTED)
573 mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
575 set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags);
577 pr_debug("mask 0x%x\n", mask);
582 static int llcp_sock_release(struct socket *sock)
584 struct sock *sk = sock->sk;
585 struct nfc_llcp_local *local;
586 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
592 pr_debug("%p\n", sk);
594 local = llcp_sock->local;
603 if (sk->sk_state == LLCP_CONNECTED)
604 nfc_llcp_send_disconnect(llcp_sock);
606 if (sk->sk_state == LLCP_LISTEN) {
607 struct nfc_llcp_sock *lsk, *n;
608 struct sock *accept_sk;
610 list_for_each_entry_safe(lsk, n, &llcp_sock->accept_queue,
612 accept_sk = &lsk->sk;
613 lock_sock(accept_sk);
615 nfc_llcp_send_disconnect(lsk);
616 nfc_llcp_accept_unlink(accept_sk);
618 release_sock(accept_sk);
622 if (llcp_sock->reserved_ssap < LLCP_SAP_MAX)
623 nfc_llcp_put_ssap(llcp_sock->local, llcp_sock->ssap);
627 /* Keep this sock alive and therefore do not remove it from the sockets
628 * list until the DISC PDU has been actually sent. Otherwise we would
629 * reply with DM PDUs before sending the DISC one.
631 if (sk->sk_state == LLCP_DISCONNECTING)
634 if (sock->type == SOCK_RAW)
635 nfc_llcp_sock_unlink(&local->raw_sockets, sk);
637 nfc_llcp_sock_unlink(&local->sockets, sk);
646 static int llcp_sock_connect(struct socket *sock, struct sockaddr *_addr,
649 struct sock *sk = sock->sk;
650 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
651 struct sockaddr_nfc_llcp *addr = (struct sockaddr_nfc_llcp *)_addr;
653 struct nfc_llcp_local *local;
656 pr_debug("sock %p sk %p flags 0x%x\n", sock, sk, flags);
658 if (!addr || len < sizeof(struct sockaddr_nfc) ||
659 addr->sa_family != AF_NFC)
662 if (addr->service_name_len == 0 && addr->dsap == 0)
665 pr_debug("addr dev_idx=%u target_idx=%u protocol=%u\n", addr->dev_idx,
666 addr->target_idx, addr->nfc_protocol);
670 if (sk->sk_state == LLCP_CONNECTED) {
675 dev = nfc_get_device(addr->dev_idx);
681 local = nfc_llcp_find_local(dev);
687 device_lock(&dev->dev);
688 if (dev->dep_link_up == false) {
690 device_unlock(&dev->dev);
693 device_unlock(&dev->dev);
695 if (local->rf_mode == NFC_RF_INITIATOR &&
696 addr->target_idx != local->target_idx) {
701 llcp_sock->dev = dev;
702 llcp_sock->local = nfc_llcp_local_get(local);
703 llcp_sock->ssap = nfc_llcp_get_local_ssap(local);
704 if (llcp_sock->ssap == LLCP_SAP_MAX) {
709 llcp_sock->reserved_ssap = llcp_sock->ssap;
711 if (addr->service_name_len == 0)
712 llcp_sock->dsap = addr->dsap;
714 llcp_sock->dsap = LLCP_SAP_SDP;
715 llcp_sock->nfc_protocol = addr->nfc_protocol;
716 llcp_sock->service_name_len = min_t(unsigned int,
717 addr->service_name_len,
718 NFC_LLCP_MAX_SERVICE_NAME);
719 llcp_sock->service_name = kmemdup(addr->service_name,
720 llcp_sock->service_name_len,
723 nfc_llcp_sock_link(&local->connecting_sockets, sk);
725 ret = nfc_llcp_send_connect(llcp_sock);
729 sk->sk_state = LLCP_CONNECTING;
731 ret = sock_wait_state(sk, LLCP_CONNECTED,
732 sock_sndtimeo(sk, flags & O_NONBLOCK));
733 if (ret && ret != -EINPROGRESS)
741 nfc_llcp_put_ssap(local, llcp_sock->ssap);
743 nfc_llcp_sock_unlink(&local->connecting_sockets, sk);
753 static int llcp_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
754 struct msghdr *msg, size_t len)
756 struct sock *sk = sock->sk;
757 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
760 pr_debug("sock %p sk %p", sock, sk);
762 ret = sock_error(sk);
766 if (msg->msg_flags & MSG_OOB)
771 if (sk->sk_type == SOCK_DGRAM) {
772 DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, addr,
775 if (msg->msg_namelen < sizeof(*addr)) {
782 return nfc_llcp_send_ui_frame(llcp_sock, addr->dsap, addr->ssap,
786 if (sk->sk_state != LLCP_CONNECTED) {
793 return nfc_llcp_send_i_frame(llcp_sock, msg, len);
796 static int llcp_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
797 struct msghdr *msg, size_t len, int flags)
799 int noblock = flags & MSG_DONTWAIT;
800 struct sock *sk = sock->sk;
801 unsigned int copied, rlen;
802 struct sk_buff *skb, *cskb;
805 pr_debug("%p %zu\n", sk, len);
809 if (sk->sk_state == LLCP_CLOSED &&
810 skb_queue_empty(&sk->sk_receive_queue)) {
817 if (flags & (MSG_OOB))
820 skb = skb_recv_datagram(sk, flags, noblock, &err);
822 pr_err("Recv datagram failed state %d %d %d",
823 sk->sk_state, err, sock_error(sk));
825 if (sk->sk_shutdown & RCV_SHUTDOWN)
831 rlen = skb->len; /* real length of skb */
832 copied = min_t(unsigned int, rlen, len);
835 if (skb_copy_datagram_iovec(cskb, 0, msg->msg_iov, copied)) {
836 if (!(flags & MSG_PEEK))
837 skb_queue_head(&sk->sk_receive_queue, skb);
841 sock_recv_timestamp(msg, sk, skb);
843 if (sk->sk_type == SOCK_DGRAM && msg->msg_name) {
844 struct nfc_llcp_ui_cb *ui_cb = nfc_llcp_ui_skb_cb(skb);
845 DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, sockaddr,
848 msg->msg_namelen = sizeof(struct sockaddr_nfc_llcp);
850 pr_debug("Datagram socket %d %d\n", ui_cb->dsap, ui_cb->ssap);
852 memset(sockaddr, 0, sizeof(*sockaddr));
853 sockaddr->sa_family = AF_NFC;
854 sockaddr->nfc_protocol = NFC_PROTO_NFC_DEP;
855 sockaddr->dsap = ui_cb->dsap;
856 sockaddr->ssap = ui_cb->ssap;
859 /* Mark read part of skb as used */
860 if (!(flags & MSG_PEEK)) {
862 /* SOCK_STREAM: re-queue skb if it contains unreceived data */
863 if (sk->sk_type == SOCK_STREAM ||
864 sk->sk_type == SOCK_DGRAM ||
865 sk->sk_type == SOCK_RAW) {
866 skb_pull(skb, copied);
868 skb_queue_head(&sk->sk_receive_queue, skb);
876 /* XXX Queue backlogged skbs */
879 /* SOCK_SEQPACKET: return real length if MSG_TRUNC is set */
880 if (sk->sk_type == SOCK_SEQPACKET && (flags & MSG_TRUNC))
886 static const struct proto_ops llcp_sock_ops = {
888 .owner = THIS_MODULE,
889 .bind = llcp_sock_bind,
890 .connect = llcp_sock_connect,
891 .release = llcp_sock_release,
892 .socketpair = sock_no_socketpair,
893 .accept = llcp_sock_accept,
894 .getname = llcp_sock_getname,
895 .poll = llcp_sock_poll,
896 .ioctl = sock_no_ioctl,
897 .listen = llcp_sock_listen,
898 .shutdown = sock_no_shutdown,
899 .setsockopt = nfc_llcp_setsockopt,
900 .getsockopt = nfc_llcp_getsockopt,
901 .sendmsg = llcp_sock_sendmsg,
902 .recvmsg = llcp_sock_recvmsg,
903 .mmap = sock_no_mmap,
906 static const struct proto_ops llcp_rawsock_ops = {
908 .owner = THIS_MODULE,
909 .bind = llcp_raw_sock_bind,
910 .connect = sock_no_connect,
911 .release = llcp_sock_release,
912 .socketpair = sock_no_socketpair,
913 .accept = sock_no_accept,
914 .getname = llcp_sock_getname,
915 .poll = llcp_sock_poll,
916 .ioctl = sock_no_ioctl,
917 .listen = sock_no_listen,
918 .shutdown = sock_no_shutdown,
919 .setsockopt = sock_no_setsockopt,
920 .getsockopt = sock_no_getsockopt,
921 .sendmsg = sock_no_sendmsg,
922 .recvmsg = llcp_sock_recvmsg,
923 .mmap = sock_no_mmap,
926 static void llcp_sock_destruct(struct sock *sk)
928 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
930 pr_debug("%p\n", sk);
932 if (sk->sk_state == LLCP_CONNECTED)
933 nfc_put_device(llcp_sock->dev);
935 skb_queue_purge(&sk->sk_receive_queue);
937 nfc_llcp_sock_free(llcp_sock);
939 if (!sock_flag(sk, SOCK_DEAD)) {
940 pr_err("Freeing alive NFC LLCP socket %p\n", sk);
945 struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp)
948 struct nfc_llcp_sock *llcp_sock;
950 sk = sk_alloc(&init_net, PF_NFC, gfp, &llcp_sock_proto);
954 llcp_sock = nfc_llcp_sock(sk);
956 sock_init_data(sock, sk);
957 sk->sk_state = LLCP_CLOSED;
958 sk->sk_protocol = NFC_SOCKPROTO_LLCP;
960 sk->sk_destruct = llcp_sock_destruct;
963 llcp_sock->dsap = LLCP_SAP_SDP;
964 llcp_sock->rw = LLCP_MAX_RW + 1;
965 llcp_sock->miux = cpu_to_be16(LLCP_MAX_MIUX + 1);
966 llcp_sock->send_n = llcp_sock->send_ack_n = 0;
967 llcp_sock->recv_n = llcp_sock->recv_ack_n = 0;
968 llcp_sock->remote_ready = 1;
969 llcp_sock->reserved_ssap = LLCP_SAP_MAX;
970 nfc_llcp_socket_remote_param_init(llcp_sock);
971 skb_queue_head_init(&llcp_sock->tx_queue);
972 skb_queue_head_init(&llcp_sock->tx_pending_queue);
973 INIT_LIST_HEAD(&llcp_sock->accept_queue);
976 sock->state = SS_UNCONNECTED;
981 void nfc_llcp_sock_free(struct nfc_llcp_sock *sock)
983 kfree(sock->service_name);
985 skb_queue_purge(&sock->tx_queue);
986 skb_queue_purge(&sock->tx_pending_queue);
988 list_del_init(&sock->accept_queue);
992 nfc_llcp_local_put(sock->local);
995 static int llcp_sock_create(struct net *net, struct socket *sock,
996 const struct nfc_protocol *nfc_proto)
1000 pr_debug("%p\n", sock);
1002 if (sock->type != SOCK_STREAM &&
1003 sock->type != SOCK_DGRAM &&
1004 sock->type != SOCK_RAW)
1005 return -ESOCKTNOSUPPORT;
1007 if (sock->type == SOCK_RAW)
1008 sock->ops = &llcp_rawsock_ops;
1010 sock->ops = &llcp_sock_ops;
1012 sk = nfc_llcp_sock_alloc(sock, sock->type, GFP_ATOMIC);
1019 static const struct nfc_protocol llcp_nfc_proto = {
1020 .id = NFC_SOCKPROTO_LLCP,
1021 .proto = &llcp_sock_proto,
1022 .owner = THIS_MODULE,
1023 .create = llcp_sock_create
1026 int __init nfc_llcp_sock_init(void)
1028 return nfc_proto_register(&llcp_nfc_proto);
1031 void nfc_llcp_sock_exit(void)
1033 nfc_proto_unregister(&llcp_nfc_proto);