1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2011 Intel Corporation. All rights reserved.
6 #define pr_fmt(fmt) "llcp: %s: " fmt, __func__
8 #include <linux/init.h>
9 #include <linux/kernel.h>
10 #include <linux/module.h>
11 #include <linux/nfc.h>
12 #include <linux/sched/signal.h>
17 static int sock_wait_state(struct sock *sk, int state, unsigned long timeo)
19 DECLARE_WAITQUEUE(wait, current);
22 pr_debug("sk %p", sk);
24 add_wait_queue(sk_sleep(sk), &wait);
25 set_current_state(TASK_INTERRUPTIBLE);
27 while (sk->sk_state != state) {
33 if (signal_pending(current)) {
34 err = sock_intr_errno(timeo);
39 timeo = schedule_timeout(timeo);
41 set_current_state(TASK_INTERRUPTIBLE);
48 __set_current_state(TASK_RUNNING);
49 remove_wait_queue(sk_sleep(sk), &wait);
53 static struct proto llcp_sock_proto = {
56 .obj_size = sizeof(struct nfc_llcp_sock),
59 static int llcp_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
61 struct sock *sk = sock->sk;
62 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
63 struct nfc_llcp_local *local;
65 struct sockaddr_nfc_llcp llcp_addr;
68 if (!addr || alen < offsetofend(struct sockaddr, sa_family) ||
69 addr->sa_family != AF_NFC)
72 pr_debug("sk %p addr %p family %d\n", sk, addr, addr->sa_family);
74 memset(&llcp_addr, 0, sizeof(llcp_addr));
75 len = min_t(unsigned int, sizeof(llcp_addr), alen);
76 memcpy(&llcp_addr, addr, len);
78 /* This is going to be a listening socket, dsap must be 0 */
79 if (llcp_addr.dsap != 0)
84 if (sk->sk_state != LLCP_CLOSED) {
89 dev = nfc_get_device(llcp_addr.dev_idx);
95 local = nfc_llcp_find_local(dev);
101 llcp_sock->dev = dev;
102 llcp_sock->local = nfc_llcp_local_get(local);
103 llcp_sock->nfc_protocol = llcp_addr.nfc_protocol;
104 llcp_sock->service_name_len = min_t(unsigned int,
105 llcp_addr.service_name_len,
106 NFC_LLCP_MAX_SERVICE_NAME);
107 llcp_sock->service_name = kmemdup(llcp_addr.service_name,
108 llcp_sock->service_name_len,
111 llcp_sock->ssap = nfc_llcp_get_sdp_ssap(local, llcp_sock);
112 if (llcp_sock->ssap == LLCP_SAP_MAX) {
117 llcp_sock->reserved_ssap = llcp_sock->ssap;
119 nfc_llcp_sock_link(&local->sockets, sk);
121 pr_debug("Socket bound to SAP %d\n", llcp_sock->ssap);
123 sk->sk_state = LLCP_BOUND;
133 static int llcp_raw_sock_bind(struct socket *sock, struct sockaddr *addr,
136 struct sock *sk = sock->sk;
137 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
138 struct nfc_llcp_local *local;
140 struct sockaddr_nfc_llcp llcp_addr;
143 if (!addr || alen < offsetofend(struct sockaddr, sa_family) ||
144 addr->sa_family != AF_NFC)
147 pr_debug("sk %p addr %p family %d\n", sk, addr, addr->sa_family);
149 memset(&llcp_addr, 0, sizeof(llcp_addr));
150 len = min_t(unsigned int, sizeof(llcp_addr), alen);
151 memcpy(&llcp_addr, addr, len);
155 if (sk->sk_state != LLCP_CLOSED) {
160 dev = nfc_get_device(llcp_addr.dev_idx);
166 local = nfc_llcp_find_local(dev);
172 llcp_sock->dev = dev;
173 llcp_sock->local = nfc_llcp_local_get(local);
174 llcp_sock->nfc_protocol = llcp_addr.nfc_protocol;
176 nfc_llcp_sock_link(&local->raw_sockets, sk);
178 sk->sk_state = LLCP_BOUND;
188 static int llcp_sock_listen(struct socket *sock, int backlog)
190 struct sock *sk = sock->sk;
193 pr_debug("sk %p backlog %d\n", sk, backlog);
197 if ((sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM) ||
198 sk->sk_state != LLCP_BOUND) {
203 sk->sk_max_ack_backlog = backlog;
204 sk->sk_ack_backlog = 0;
206 pr_debug("Socket listening\n");
207 sk->sk_state = LLCP_LISTEN;
215 static int nfc_llcp_setsockopt(struct socket *sock, int level, int optname,
216 char __user *optval, unsigned int optlen)
218 struct sock *sk = sock->sk;
219 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
223 pr_debug("%p optname %d\n", sk, optname);
225 if (level != SOL_NFC)
232 if (sk->sk_state == LLCP_CONNECTED ||
233 sk->sk_state == LLCP_BOUND ||
234 sk->sk_state == LLCP_LISTEN) {
239 if (get_user(opt, (u32 __user *) optval)) {
244 if (opt > LLCP_MAX_RW) {
249 llcp_sock->rw = (u8) opt;
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_MIUX) {
271 llcp_sock->miux = cpu_to_be16((u16) opt);
282 pr_debug("%p rw %d miux %d\n", llcp_sock,
283 llcp_sock->rw, llcp_sock->miux);
288 static int nfc_llcp_getsockopt(struct socket *sock, int level, int optname,
289 char __user *optval, int __user *optlen)
291 struct nfc_llcp_local *local;
292 struct sock *sk = sock->sk;
293 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
295 u16 miux, remote_miu;
298 pr_debug("%p optname %d\n", sk, optname);
300 if (level != SOL_NFC)
303 if (get_user(len, optlen))
306 local = llcp_sock->local;
310 len = min_t(u32, len, sizeof(u32));
316 rw = llcp_sock->rw > LLCP_MAX_RW ? local->rw : llcp_sock->rw;
317 if (put_user(rw, (u32 __user *) optval))
323 miux = be16_to_cpu(llcp_sock->miux) > LLCP_MAX_MIUX ?
324 be16_to_cpu(local->miux) : be16_to_cpu(llcp_sock->miux);
326 if (put_user(miux, (u32 __user *) optval))
331 case NFC_LLCP_REMOTE_MIU:
332 remote_miu = llcp_sock->remote_miu > LLCP_MAX_MIU ?
333 local->remote_miu : llcp_sock->remote_miu;
335 if (put_user(remote_miu, (u32 __user *) optval))
340 case NFC_LLCP_REMOTE_LTO:
341 if (put_user(local->remote_lto / 10, (u32 __user *) optval))
346 case NFC_LLCP_REMOTE_RW:
347 if (put_user(llcp_sock->remote_rw, (u32 __user *) optval))
359 if (put_user(len, optlen))
365 void nfc_llcp_accept_unlink(struct sock *sk)
367 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
369 pr_debug("state %d\n", sk->sk_state);
371 list_del_init(&llcp_sock->accept_queue);
372 sk_acceptq_removed(llcp_sock->parent);
373 llcp_sock->parent = NULL;
378 void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk)
380 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
381 struct nfc_llcp_sock *llcp_sock_parent = nfc_llcp_sock(parent);
383 /* Lock will be free from unlink */
386 list_add_tail(&llcp_sock->accept_queue,
387 &llcp_sock_parent->accept_queue);
388 llcp_sock->parent = parent;
389 sk_acceptq_added(parent);
392 struct sock *nfc_llcp_accept_dequeue(struct sock *parent,
393 struct socket *newsock)
395 struct nfc_llcp_sock *lsk, *n, *llcp_parent;
398 llcp_parent = nfc_llcp_sock(parent);
400 list_for_each_entry_safe(lsk, n, &llcp_parent->accept_queue,
405 if (sk->sk_state == LLCP_CLOSED) {
407 nfc_llcp_accept_unlink(sk);
411 if (sk->sk_state == LLCP_CONNECTED || !newsock) {
412 list_del_init(&lsk->accept_queue);
416 sock_graft(sk, newsock);
420 pr_debug("Returning sk state %d\n", sk->sk_state);
422 sk_acceptq_removed(parent);
433 static int llcp_sock_accept(struct socket *sock, struct socket *newsock,
434 int flags, bool kern)
436 DECLARE_WAITQUEUE(wait, current);
437 struct sock *sk = sock->sk, *new_sk;
441 pr_debug("parent %p\n", sk);
443 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
445 if (sk->sk_state != LLCP_LISTEN) {
450 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
452 /* Wait for an incoming connection. */
453 add_wait_queue_exclusive(sk_sleep(sk), &wait);
454 while (!(new_sk = nfc_llcp_accept_dequeue(sk, newsock))) {
455 set_current_state(TASK_INTERRUPTIBLE);
462 if (signal_pending(current)) {
463 ret = sock_intr_errno(timeo);
468 timeo = schedule_timeout(timeo);
469 lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
471 __set_current_state(TASK_RUNNING);
472 remove_wait_queue(sk_sleep(sk), &wait);
477 newsock->state = SS_CONNECTED;
479 pr_debug("new socket %p\n", new_sk);
487 static int llcp_sock_getname(struct socket *sock, struct sockaddr *uaddr,
490 struct sock *sk = sock->sk;
491 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
492 DECLARE_SOCKADDR(struct sockaddr_nfc_llcp *, llcp_addr, uaddr);
494 if (llcp_sock == NULL || llcp_sock->dev == NULL)
497 pr_debug("%p %d %d %d\n", sk, llcp_sock->target_idx,
498 llcp_sock->dsap, llcp_sock->ssap);
500 memset(llcp_addr, 0, sizeof(*llcp_addr));
503 if (!llcp_sock->dev) {
507 llcp_addr->sa_family = AF_NFC;
508 llcp_addr->dev_idx = llcp_sock->dev->idx;
509 llcp_addr->target_idx = llcp_sock->target_idx;
510 llcp_addr->nfc_protocol = llcp_sock->nfc_protocol;
511 llcp_addr->dsap = llcp_sock->dsap;
512 llcp_addr->ssap = llcp_sock->ssap;
513 llcp_addr->service_name_len = llcp_sock->service_name_len;
514 memcpy(llcp_addr->service_name, llcp_sock->service_name,
515 llcp_addr->service_name_len);
518 return sizeof(struct sockaddr_nfc_llcp);
521 static inline __poll_t llcp_accept_poll(struct sock *parent)
523 struct nfc_llcp_sock *llcp_sock, *parent_sock;
526 parent_sock = nfc_llcp_sock(parent);
528 list_for_each_entry(llcp_sock, &parent_sock->accept_queue,
532 if (sk->sk_state == LLCP_CONNECTED)
533 return EPOLLIN | EPOLLRDNORM;
539 static __poll_t llcp_sock_poll(struct file *file, struct socket *sock,
542 struct sock *sk = sock->sk;
545 pr_debug("%p\n", sk);
547 sock_poll_wait(file, sock, wait);
549 if (sk->sk_state == LLCP_LISTEN)
550 return llcp_accept_poll(sk);
552 if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue))
554 (sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? EPOLLPRI : 0);
556 if (!skb_queue_empty(&sk->sk_receive_queue))
557 mask |= EPOLLIN | EPOLLRDNORM;
559 if (sk->sk_state == LLCP_CLOSED)
562 if (sk->sk_shutdown & RCV_SHUTDOWN)
563 mask |= EPOLLRDHUP | EPOLLIN | EPOLLRDNORM;
565 if (sk->sk_shutdown == SHUTDOWN_MASK)
568 if (sock_writeable(sk) && sk->sk_state == LLCP_CONNECTED)
569 mask |= EPOLLOUT | EPOLLWRNORM | EPOLLWRBAND;
571 sk_set_bit(SOCKWQ_ASYNC_NOSPACE, sk);
573 pr_debug("mask 0x%x\n", mask);
578 static int llcp_sock_release(struct socket *sock)
580 struct sock *sk = sock->sk;
581 struct nfc_llcp_local *local;
582 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
588 pr_debug("%p\n", sk);
590 local = llcp_sock->local;
599 if (sk->sk_state == LLCP_CONNECTED)
600 nfc_llcp_send_disconnect(llcp_sock);
602 if (sk->sk_state == LLCP_LISTEN) {
603 struct nfc_llcp_sock *lsk, *n;
604 struct sock *accept_sk;
606 list_for_each_entry_safe(lsk, n, &llcp_sock->accept_queue,
608 accept_sk = &lsk->sk;
609 lock_sock(accept_sk);
611 nfc_llcp_send_disconnect(lsk);
612 nfc_llcp_accept_unlink(accept_sk);
614 release_sock(accept_sk);
618 if (llcp_sock->reserved_ssap < LLCP_SAP_MAX)
619 nfc_llcp_put_ssap(llcp_sock->local, llcp_sock->ssap);
623 /* Keep this sock alive and therefore do not remove it from the sockets
624 * list until the DISC PDU has been actually sent. Otherwise we would
625 * reply with DM PDUs before sending the DISC one.
627 if (sk->sk_state == LLCP_DISCONNECTING)
630 if (sock->type == SOCK_RAW)
631 nfc_llcp_sock_unlink(&local->raw_sockets, sk);
633 nfc_llcp_sock_unlink(&local->sockets, sk);
642 static int llcp_sock_connect(struct socket *sock, struct sockaddr *_addr,
645 struct sock *sk = sock->sk;
646 struct nfc_llcp_sock *llcp_sock = nfc_llcp_sock(sk);
647 struct sockaddr_nfc_llcp *addr = (struct sockaddr_nfc_llcp *)_addr;
649 struct nfc_llcp_local *local;
652 pr_debug("sock %p sk %p flags 0x%x\n", sock, sk, flags);
654 if (!addr || len < sizeof(*addr) || addr->sa_family != AF_NFC)
657 if (addr->service_name_len == 0 && addr->dsap == 0)
660 pr_debug("addr dev_idx=%u target_idx=%u protocol=%u\n", addr->dev_idx,
661 addr->target_idx, addr->nfc_protocol);
665 if (sk->sk_state == LLCP_CONNECTED) {
670 dev = nfc_get_device(addr->dev_idx);
676 local = nfc_llcp_find_local(dev);
682 device_lock(&dev->dev);
683 if (dev->dep_link_up == false) {
685 device_unlock(&dev->dev);
688 device_unlock(&dev->dev);
690 if (local->rf_mode == NFC_RF_INITIATOR &&
691 addr->target_idx != local->target_idx) {
696 llcp_sock->dev = dev;
697 llcp_sock->local = nfc_llcp_local_get(local);
698 llcp_sock->ssap = nfc_llcp_get_local_ssap(local);
699 if (llcp_sock->ssap == LLCP_SAP_MAX) {
704 llcp_sock->reserved_ssap = llcp_sock->ssap;
706 if (addr->service_name_len == 0)
707 llcp_sock->dsap = addr->dsap;
709 llcp_sock->dsap = LLCP_SAP_SDP;
710 llcp_sock->nfc_protocol = addr->nfc_protocol;
711 llcp_sock->service_name_len = min_t(unsigned int,
712 addr->service_name_len,
713 NFC_LLCP_MAX_SERVICE_NAME);
714 llcp_sock->service_name = kmemdup(addr->service_name,
715 llcp_sock->service_name_len,
717 if (!llcp_sock->service_name) {
719 goto sock_llcp_release;
722 nfc_llcp_sock_link(&local->connecting_sockets, sk);
724 ret = nfc_llcp_send_connect(llcp_sock);
728 sk->sk_state = LLCP_CONNECTING;
730 ret = sock_wait_state(sk, LLCP_CONNECTED,
731 sock_sndtimeo(sk, flags & O_NONBLOCK));
732 if (ret && ret != -EINPROGRESS)
740 nfc_llcp_sock_unlink(&local->connecting_sockets, sk);
743 nfc_llcp_put_ssap(local, llcp_sock->ssap);
753 static int llcp_sock_sendmsg(struct socket *sock, struct msghdr *msg,
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 socket *sock, struct msghdr *msg,
797 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_msg(cskb, 0, msg, 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, int kern)
948 struct nfc_llcp_sock *llcp_sock;
950 sk = sk_alloc(&init_net, PF_NFC, gfp, &llcp_sock_proto, kern);
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, int kern)
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, kern);
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);