1 // SPDX-License-Identifier: GPL-2.0
3 * BlueZ - Bluetooth protocol stack for Linux
5 * Copyright (C) 2022 Intel Corporation
9 #include <linux/module.h>
10 #include <linux/debugfs.h>
11 #include <linux/seq_file.h>
12 #include <linux/sched/signal.h>
14 #include <net/bluetooth/bluetooth.h>
15 #include <net/bluetooth/hci_core.h>
16 #include <net/bluetooth/iso.h>
18 static const struct proto_ops iso_sock_ops;
20 static struct bt_sock_list iso_sk_list = {
21 .lock = __RW_LOCK_UNLOCKED(iso_sk_list.lock)
24 /* ---- ISO connections ---- */
26 struct hci_conn *hcon;
28 /* @lock: spinlock protecting changes to iso_conn fields */
32 struct delayed_work timeout_work;
34 struct sk_buff *rx_skb;
39 #define iso_conn_lock(c) spin_lock(&(c)->lock)
40 #define iso_conn_unlock(c) spin_unlock(&(c)->lock)
42 static void iso_sock_close(struct sock *sk);
43 static void iso_sock_kill(struct sock *sk);
45 /* ----- ISO socket info ----- */
46 #define iso_pi(sk) ((struct iso_pinfo *)sk)
48 #define EIR_SERVICE_DATA_LENGTH 4
49 #define BASE_MAX_LENGTH (HCI_MAX_PER_AD_LENGTH - EIR_SERVICE_DATA_LENGTH)
51 /* iso_pinfo flags values */
65 __u8 bc_bis[ISO_MAX_NUM_BIS];
68 struct bt_iso_qos qos;
71 __u8 base[BASE_MAX_LENGTH];
72 struct iso_conn *conn;
75 static struct bt_iso_qos default_qos;
77 static bool check_ucast_qos(struct bt_iso_qos *qos);
78 static bool check_bcast_qos(struct bt_iso_qos *qos);
79 static bool iso_match_sid(struct sock *sk, void *data);
80 static bool iso_match_sync_handle(struct sock *sk, void *data);
81 static void iso_sock_disconn(struct sock *sk);
83 /* ---- ISO timers ---- */
84 #define ISO_CONN_TIMEOUT (HZ * 40)
85 #define ISO_DISCONN_TIMEOUT (HZ * 2)
87 static void iso_sock_timeout(struct work_struct *work)
89 struct iso_conn *conn = container_of(work, struct iso_conn,
97 iso_conn_unlock(conn);
102 BT_DBG("sock %p state %d", sk, sk->sk_state);
105 sk->sk_err = ETIMEDOUT;
106 sk->sk_state_change(sk);
111 static void iso_sock_set_timer(struct sock *sk, long timeout)
113 if (!iso_pi(sk)->conn)
116 BT_DBG("sock %p state %d timeout %ld", sk, sk->sk_state, timeout);
117 cancel_delayed_work(&iso_pi(sk)->conn->timeout_work);
118 schedule_delayed_work(&iso_pi(sk)->conn->timeout_work, timeout);
121 static void iso_sock_clear_timer(struct sock *sk)
123 if (!iso_pi(sk)->conn)
126 BT_DBG("sock %p state %d", sk, sk->sk_state);
127 cancel_delayed_work(&iso_pi(sk)->conn->timeout_work);
130 /* ---- ISO connections ---- */
131 static struct iso_conn *iso_conn_add(struct hci_conn *hcon)
133 struct iso_conn *conn = hcon->iso_data;
141 conn = kzalloc(sizeof(*conn), GFP_KERNEL);
145 spin_lock_init(&conn->lock);
146 INIT_DELAYED_WORK(&conn->timeout_work, iso_sock_timeout);
148 hcon->iso_data = conn;
152 BT_DBG("hcon %p conn %p", hcon, conn);
157 /* Delete channel. Must be called on the locked socket. */
158 static void iso_chan_del(struct sock *sk, int err)
160 struct iso_conn *conn;
163 conn = iso_pi(sk)->conn;
165 BT_DBG("sk %p, conn %p, err %d", sk, conn, err);
170 iso_pi(sk)->conn = NULL;
171 iso_conn_unlock(conn);
174 hci_conn_drop(conn->hcon);
177 sk->sk_state = BT_CLOSED;
180 parent = bt_sk(sk)->parent;
182 bt_accept_unlink(sk);
183 parent->sk_data_ready(parent);
185 sk->sk_state_change(sk);
188 sock_set_flag(sk, SOCK_ZAPPED);
191 static void iso_conn_del(struct hci_conn *hcon, int err)
193 struct iso_conn *conn = hcon->iso_data;
199 BT_DBG("hcon %p conn %p, err %d", hcon, conn, err);
206 iso_conn_unlock(conn);
210 iso_sock_clear_timer(sk);
211 iso_chan_del(sk, err);
216 /* Ensure no more work items will run before freeing conn. */
217 cancel_delayed_work_sync(&conn->timeout_work);
219 hcon->iso_data = NULL;
223 static int __iso_chan_add(struct iso_conn *conn, struct sock *sk,
226 BT_DBG("conn %p", conn);
228 if (iso_pi(sk)->conn == conn && conn->sk == sk)
232 BT_ERR("conn->sk already set");
236 iso_pi(sk)->conn = conn;
240 bt_accept_enqueue(parent, sk, true);
245 static int iso_chan_add(struct iso_conn *conn, struct sock *sk,
251 err = __iso_chan_add(conn, sk, parent);
252 iso_conn_unlock(conn);
257 static inline u8 le_addr_type(u8 bdaddr_type)
259 if (bdaddr_type == BDADDR_LE_PUBLIC)
260 return ADDR_LE_DEV_PUBLIC;
262 return ADDR_LE_DEV_RANDOM;
265 static int iso_connect_bis(struct sock *sk)
267 struct iso_conn *conn;
268 struct hci_conn *hcon;
269 struct hci_dev *hdev;
272 BT_DBG("%pMR", &iso_pi(sk)->src);
274 hdev = hci_get_route(&iso_pi(sk)->dst, &iso_pi(sk)->src,
275 iso_pi(sk)->src_type);
277 return -EHOSTUNREACH;
281 if (!bis_capable(hdev)) {
286 /* Fail if user set invalid QoS */
287 if (iso_pi(sk)->qos_user_set && !check_bcast_qos(&iso_pi(sk)->qos)) {
288 iso_pi(sk)->qos = default_qos;
293 /* Fail if out PHYs are marked as disabled */
294 if (!iso_pi(sk)->qos.bcast.out.phy) {
299 /* Just bind if DEFER_SETUP has been set */
300 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
301 hcon = hci_bind_bis(hdev, &iso_pi(sk)->dst,
302 &iso_pi(sk)->qos, iso_pi(sk)->base_len,
309 hcon = hci_connect_bis(hdev, &iso_pi(sk)->dst,
310 le_addr_type(iso_pi(sk)->dst_type),
311 &iso_pi(sk)->qos, iso_pi(sk)->base_len,
319 conn = iso_conn_add(hcon);
328 err = iso_chan_add(conn, sk, NULL);
334 /* Update source addr of the socket */
335 bacpy(&iso_pi(sk)->src, &hcon->src);
337 if (hcon->state == BT_CONNECTED) {
338 iso_sock_clear_timer(sk);
339 sk->sk_state = BT_CONNECTED;
340 } else if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
341 iso_sock_clear_timer(sk);
342 sk->sk_state = BT_CONNECT;
344 sk->sk_state = BT_CONNECT;
345 iso_sock_set_timer(sk, sk->sk_sndtimeo);
351 hci_dev_unlock(hdev);
356 static int iso_connect_cis(struct sock *sk)
358 struct iso_conn *conn;
359 struct hci_conn *hcon;
360 struct hci_dev *hdev;
363 BT_DBG("%pMR -> %pMR", &iso_pi(sk)->src, &iso_pi(sk)->dst);
365 hdev = hci_get_route(&iso_pi(sk)->dst, &iso_pi(sk)->src,
366 iso_pi(sk)->src_type);
368 return -EHOSTUNREACH;
372 if (!cis_central_capable(hdev)) {
377 /* Fail if user set invalid QoS */
378 if (iso_pi(sk)->qos_user_set && !check_ucast_qos(&iso_pi(sk)->qos)) {
379 iso_pi(sk)->qos = default_qos;
384 /* Fail if either PHYs are marked as disabled */
385 if (!iso_pi(sk)->qos.ucast.in.phy && !iso_pi(sk)->qos.ucast.out.phy) {
390 /* Just bind if DEFER_SETUP has been set */
391 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
392 hcon = hci_bind_cis(hdev, &iso_pi(sk)->dst,
393 le_addr_type(iso_pi(sk)->dst_type),
400 hcon = hci_connect_cis(hdev, &iso_pi(sk)->dst,
401 le_addr_type(iso_pi(sk)->dst_type),
409 conn = iso_conn_add(hcon);
418 err = iso_chan_add(conn, sk, NULL);
424 /* Update source addr of the socket */
425 bacpy(&iso_pi(sk)->src, &hcon->src);
427 if (hcon->state == BT_CONNECTED) {
428 iso_sock_clear_timer(sk);
429 sk->sk_state = BT_CONNECTED;
430 } else if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
431 iso_sock_clear_timer(sk);
432 sk->sk_state = BT_CONNECT;
434 sk->sk_state = BT_CONNECT;
435 iso_sock_set_timer(sk, sk->sk_sndtimeo);
441 hci_dev_unlock(hdev);
446 static struct bt_iso_qos *iso_sock_get_qos(struct sock *sk)
448 if (sk->sk_state == BT_CONNECTED || sk->sk_state == BT_CONNECT2)
449 return &iso_pi(sk)->conn->hcon->iso_qos;
451 return &iso_pi(sk)->qos;
454 static int iso_send_frame(struct sock *sk, struct sk_buff *skb)
456 struct iso_conn *conn = iso_pi(sk)->conn;
457 struct bt_iso_qos *qos = iso_sock_get_qos(sk);
458 struct hci_iso_data_hdr *hdr;
461 BT_DBG("sk %p len %d", sk, skb->len);
463 if (skb->len > qos->ucast.out.sdu)
468 /* Push ISO data header */
469 hdr = skb_push(skb, HCI_ISO_DATA_HDR_SIZE);
470 hdr->sn = cpu_to_le16(conn->tx_sn++);
471 hdr->slen = cpu_to_le16(hci_iso_data_len_pack(len,
472 HCI_ISO_STATUS_VALID));
474 if (sk->sk_state == BT_CONNECTED)
475 hci_send_iso(conn->hcon, skb);
482 static void iso_recv_frame(struct iso_conn *conn, struct sk_buff *skb)
488 iso_conn_unlock(conn);
493 BT_DBG("sk %p len %d", sk, skb->len);
495 if (sk->sk_state != BT_CONNECTED)
498 if (!sock_queue_rcv_skb(sk, skb))
505 /* -------- Socket interface ---------- */
506 static struct sock *__iso_get_sock_listen_by_addr(bdaddr_t *src, bdaddr_t *dst)
510 sk_for_each(sk, &iso_sk_list.head) {
511 if (sk->sk_state != BT_LISTEN)
514 if (bacmp(&iso_pi(sk)->dst, dst))
517 if (!bacmp(&iso_pi(sk)->src, src))
524 static struct sock *__iso_get_sock_listen_by_sid(bdaddr_t *ba, bdaddr_t *bc,
529 sk_for_each(sk, &iso_sk_list.head) {
530 if (sk->sk_state != BT_LISTEN)
533 if (bacmp(&iso_pi(sk)->src, ba))
536 if (bacmp(&iso_pi(sk)->dst, bc))
539 if (iso_pi(sk)->bc_sid == sid)
546 typedef bool (*iso_sock_match_t)(struct sock *sk, void *data);
548 /* Find socket listening:
549 * source bdaddr (Unicast)
550 * destination bdaddr (Broadcast only)
551 * match func - pass NULL to ignore
552 * match func data - pass -1 to ignore
553 * Returns closest match.
555 static struct sock *iso_get_sock_listen(bdaddr_t *src, bdaddr_t *dst,
556 iso_sock_match_t match, void *data)
558 struct sock *sk = NULL, *sk1 = NULL;
560 read_lock(&iso_sk_list.lock);
562 sk_for_each(sk, &iso_sk_list.head) {
563 if (sk->sk_state != BT_LISTEN)
566 /* Match Broadcast destination */
567 if (bacmp(dst, BDADDR_ANY) && bacmp(&iso_pi(sk)->dst, dst))
570 /* Use Match function if provided */
571 if (match && !match(sk, data))
575 if (!bacmp(&iso_pi(sk)->src, src))
579 if (!bacmp(&iso_pi(sk)->src, BDADDR_ANY))
583 read_unlock(&iso_sk_list.lock);
585 return sk ? sk : sk1;
588 static void iso_sock_destruct(struct sock *sk)
592 skb_queue_purge(&sk->sk_receive_queue);
593 skb_queue_purge(&sk->sk_write_queue);
596 static void iso_sock_cleanup_listen(struct sock *parent)
600 BT_DBG("parent %p", parent);
602 /* Close not yet accepted channels */
603 while ((sk = bt_accept_dequeue(parent, NULL))) {
608 /* If listening socket stands for a PA sync connection,
609 * properly disconnect the hcon and socket.
611 if (iso_pi(parent)->conn && iso_pi(parent)->conn->hcon &&
612 test_bit(HCI_CONN_PA_SYNC, &iso_pi(parent)->conn->hcon->flags)) {
613 iso_sock_disconn(parent);
617 parent->sk_state = BT_CLOSED;
618 sock_set_flag(parent, SOCK_ZAPPED);
621 /* Kill socket (only if zapped and orphan)
622 * Must be called on unlocked socket.
624 static void iso_sock_kill(struct sock *sk)
626 if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket ||
627 sock_flag(sk, SOCK_DEAD))
630 BT_DBG("sk %p state %d", sk, sk->sk_state);
632 /* Kill poor orphan */
633 bt_sock_unlink(&iso_sk_list, sk);
634 sock_set_flag(sk, SOCK_DEAD);
638 static void iso_sock_disconn(struct sock *sk)
640 sk->sk_state = BT_DISCONN;
641 iso_sock_set_timer(sk, ISO_DISCONN_TIMEOUT);
642 iso_conn_lock(iso_pi(sk)->conn);
643 hci_conn_drop(iso_pi(sk)->conn->hcon);
644 iso_pi(sk)->conn->hcon = NULL;
645 iso_conn_unlock(iso_pi(sk)->conn);
648 static void __iso_sock_close(struct sock *sk)
650 BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket);
652 switch (sk->sk_state) {
654 iso_sock_cleanup_listen(sk);
660 if (iso_pi(sk)->conn->hcon)
661 iso_sock_disconn(sk);
663 iso_chan_del(sk, ECONNRESET);
667 if (iso_pi(sk)->conn->hcon &&
668 (test_bit(HCI_CONN_PA_SYNC, &iso_pi(sk)->conn->hcon->flags) ||
669 test_bit(HCI_CONN_PA_SYNC_FAILED, &iso_pi(sk)->conn->hcon->flags)))
670 iso_sock_disconn(sk);
672 iso_chan_del(sk, ECONNRESET);
675 iso_chan_del(sk, ECONNRESET);
679 sock_set_flag(sk, SOCK_ZAPPED);
684 /* Must be called on unlocked socket. */
685 static void iso_sock_close(struct sock *sk)
687 iso_sock_clear_timer(sk);
689 __iso_sock_close(sk);
694 static void iso_sock_init(struct sock *sk, struct sock *parent)
699 sk->sk_type = parent->sk_type;
700 bt_sk(sk)->flags = bt_sk(parent)->flags;
701 security_sk_clone(parent, sk);
705 static struct proto iso_proto = {
707 .owner = THIS_MODULE,
708 .obj_size = sizeof(struct iso_pinfo)
711 #define DEFAULT_IO_QOS \
713 .interval = 10000u, \
716 .phy = BT_ISO_PHY_2M, \
720 static struct bt_iso_qos default_qos = {
722 .big = BT_ISO_QOS_BIG_UNSET,
723 .bis = BT_ISO_QOS_BIS_UNSET,
727 .in = DEFAULT_IO_QOS,
728 .out = DEFAULT_IO_QOS,
733 .sync_timeout = 0x4000,
734 .sync_cte_type = 0x00,
740 static struct sock *iso_sock_alloc(struct net *net, struct socket *sock,
741 int proto, gfp_t prio, int kern)
745 sk = bt_sock_alloc(net, sock, &iso_proto, proto, prio, kern);
749 sk->sk_destruct = iso_sock_destruct;
750 sk->sk_sndtimeo = ISO_CONN_TIMEOUT;
752 /* Set address type as public as default src address is BDADDR_ANY */
753 iso_pi(sk)->src_type = BDADDR_LE_PUBLIC;
755 iso_pi(sk)->qos = default_qos;
757 bt_sock_link(&iso_sk_list, sk);
761 static int iso_sock_create(struct net *net, struct socket *sock, int protocol,
766 BT_DBG("sock %p", sock);
768 sock->state = SS_UNCONNECTED;
770 if (sock->type != SOCK_SEQPACKET)
771 return -ESOCKTNOSUPPORT;
773 sock->ops = &iso_sock_ops;
775 sk = iso_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern);
779 iso_sock_init(sk, NULL);
783 static int iso_sock_bind_bc(struct socket *sock, struct sockaddr *addr,
786 struct sockaddr_iso *sa = (struct sockaddr_iso *)addr;
787 struct sock *sk = sock->sk;
790 BT_DBG("sk %p bc_sid %u bc_num_bis %u", sk, sa->iso_bc->bc_sid,
791 sa->iso_bc->bc_num_bis);
793 if (addr_len > sizeof(*sa) + sizeof(*sa->iso_bc) ||
794 sa->iso_bc->bc_num_bis < 0x01 || sa->iso_bc->bc_num_bis > 0x1f)
797 bacpy(&iso_pi(sk)->dst, &sa->iso_bc->bc_bdaddr);
798 iso_pi(sk)->dst_type = sa->iso_bc->bc_bdaddr_type;
799 iso_pi(sk)->sync_handle = -1;
800 iso_pi(sk)->bc_sid = sa->iso_bc->bc_sid;
801 iso_pi(sk)->bc_num_bis = sa->iso_bc->bc_num_bis;
803 for (i = 0; i < iso_pi(sk)->bc_num_bis; i++) {
804 if (sa->iso_bc->bc_bis[i] < 0x01 ||
805 sa->iso_bc->bc_bis[i] > 0x1f)
808 memcpy(iso_pi(sk)->bc_bis, sa->iso_bc->bc_bis,
809 iso_pi(sk)->bc_num_bis);
815 static int iso_sock_bind(struct socket *sock, struct sockaddr *addr,
818 struct sockaddr_iso *sa = (struct sockaddr_iso *)addr;
819 struct sock *sk = sock->sk;
822 BT_DBG("sk %p %pMR type %u", sk, &sa->iso_bdaddr, sa->iso_bdaddr_type);
824 if (!addr || addr_len < sizeof(struct sockaddr_iso) ||
825 addr->sa_family != AF_BLUETOOTH)
830 if (sk->sk_state != BT_OPEN) {
835 if (sk->sk_type != SOCK_SEQPACKET) {
840 /* Check if the address type is of LE type */
841 if (!bdaddr_type_is_le(sa->iso_bdaddr_type)) {
846 bacpy(&iso_pi(sk)->src, &sa->iso_bdaddr);
847 iso_pi(sk)->src_type = sa->iso_bdaddr_type;
849 /* Check for Broadcast address */
850 if (addr_len > sizeof(*sa)) {
851 err = iso_sock_bind_bc(sock, addr, addr_len);
856 sk->sk_state = BT_BOUND;
863 static int iso_sock_connect(struct socket *sock, struct sockaddr *addr,
866 struct sockaddr_iso *sa = (struct sockaddr_iso *)addr;
867 struct sock *sk = sock->sk;
872 if (alen < sizeof(struct sockaddr_iso) ||
873 addr->sa_family != AF_BLUETOOTH)
876 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND)
879 if (sk->sk_type != SOCK_SEQPACKET)
882 /* Check if the address type is of LE type */
883 if (!bdaddr_type_is_le(sa->iso_bdaddr_type))
888 bacpy(&iso_pi(sk)->dst, &sa->iso_bdaddr);
889 iso_pi(sk)->dst_type = sa->iso_bdaddr_type;
893 if (bacmp(&iso_pi(sk)->dst, BDADDR_ANY))
894 err = iso_connect_cis(sk);
896 err = iso_connect_bis(sk);
903 if (!test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
904 err = bt_sock_wait_state(sk, BT_CONNECTED,
905 sock_sndtimeo(sk, flags & O_NONBLOCK));
912 static int iso_listen_bis(struct sock *sk)
914 struct hci_dev *hdev;
917 BT_DBG("%pMR -> %pMR (SID 0x%2.2x)", &iso_pi(sk)->src,
918 &iso_pi(sk)->dst, iso_pi(sk)->bc_sid);
920 write_lock(&iso_sk_list.lock);
922 if (__iso_get_sock_listen_by_sid(&iso_pi(sk)->src, &iso_pi(sk)->dst,
926 write_unlock(&iso_sk_list.lock);
931 hdev = hci_get_route(&iso_pi(sk)->dst, &iso_pi(sk)->src,
932 iso_pi(sk)->src_type);
934 return -EHOSTUNREACH;
936 /* Fail if user set invalid QoS */
937 if (iso_pi(sk)->qos_user_set && !check_bcast_qos(&iso_pi(sk)->qos)) {
938 iso_pi(sk)->qos = default_qos;
942 err = hci_pa_create_sync(hdev, &iso_pi(sk)->dst,
943 le_addr_type(iso_pi(sk)->dst_type),
944 iso_pi(sk)->bc_sid, &iso_pi(sk)->qos);
951 static int iso_listen_cis(struct sock *sk)
955 BT_DBG("%pMR", &iso_pi(sk)->src);
957 write_lock(&iso_sk_list.lock);
959 if (__iso_get_sock_listen_by_addr(&iso_pi(sk)->src, &iso_pi(sk)->dst))
962 write_unlock(&iso_sk_list.lock);
967 static int iso_sock_listen(struct socket *sock, int backlog)
969 struct sock *sk = sock->sk;
972 BT_DBG("sk %p backlog %d", sk, backlog);
976 if (sk->sk_state != BT_BOUND) {
981 if (sk->sk_type != SOCK_SEQPACKET) {
986 if (!bacmp(&iso_pi(sk)->dst, BDADDR_ANY))
987 err = iso_listen_cis(sk);
989 err = iso_listen_bis(sk);
994 sk->sk_max_ack_backlog = backlog;
995 sk->sk_ack_backlog = 0;
997 sk->sk_state = BT_LISTEN;
1004 static int iso_sock_accept(struct socket *sock, struct socket *newsock,
1005 int flags, bool kern)
1007 DEFINE_WAIT_FUNC(wait, woken_wake_function);
1008 struct sock *sk = sock->sk, *ch;
1014 timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
1016 BT_DBG("sk %p timeo %ld", sk, timeo);
1018 /* Wait for an incoming connection. (wake-one). */
1019 add_wait_queue_exclusive(sk_sleep(sk), &wait);
1021 if (sk->sk_state != BT_LISTEN) {
1026 ch = bt_accept_dequeue(sk, newsock);
1035 if (signal_pending(current)) {
1036 err = sock_intr_errno(timeo);
1042 timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo);
1045 remove_wait_queue(sk_sleep(sk), &wait);
1050 newsock->state = SS_CONNECTED;
1052 BT_DBG("new socket %p", ch);
1059 static int iso_sock_getname(struct socket *sock, struct sockaddr *addr,
1062 struct sockaddr_iso *sa = (struct sockaddr_iso *)addr;
1063 struct sock *sk = sock->sk;
1065 BT_DBG("sock %p, sk %p", sock, sk);
1067 addr->sa_family = AF_BLUETOOTH;
1070 bacpy(&sa->iso_bdaddr, &iso_pi(sk)->dst);
1071 sa->iso_bdaddr_type = iso_pi(sk)->dst_type;
1073 bacpy(&sa->iso_bdaddr, &iso_pi(sk)->src);
1074 sa->iso_bdaddr_type = iso_pi(sk)->src_type;
1077 return sizeof(struct sockaddr_iso);
1080 static int iso_sock_sendmsg(struct socket *sock, struct msghdr *msg,
1083 struct sock *sk = sock->sk;
1084 struct sk_buff *skb, **frag;
1088 BT_DBG("sock %p, sk %p", sock, sk);
1090 err = sock_error(sk);
1094 if (msg->msg_flags & MSG_OOB)
1099 if (sk->sk_state != BT_CONNECTED) {
1104 mtu = iso_pi(sk)->conn->hcon->hdev->iso_mtu;
1108 skb = bt_skb_sendmsg(sk, msg, len, mtu, HCI_ISO_DATA_HDR_SIZE, 0);
1110 return PTR_ERR(skb);
1114 BT_DBG("skb %p len %d", sk, skb->len);
1116 /* Continuation fragments */
1117 frag = &skb_shinfo(skb)->frag_list;
1119 struct sk_buff *tmp;
1121 tmp = bt_skb_sendmsg(sk, msg, len, mtu, 0, 0);
1124 return PTR_ERR(tmp);
1131 skb->len += tmp->len;
1132 skb->data_len += tmp->len;
1134 BT_DBG("frag %p len %d", *frag, tmp->len);
1136 frag = &(*frag)->next;
1141 if (sk->sk_state == BT_CONNECTED)
1142 err = iso_send_frame(sk, skb);
1153 static void iso_conn_defer_accept(struct hci_conn *conn)
1155 struct hci_cp_le_accept_cis cp;
1156 struct hci_dev *hdev = conn->hdev;
1158 BT_DBG("conn %p", conn);
1160 conn->state = BT_CONFIG;
1162 cp.handle = cpu_to_le16(conn->handle);
1164 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp);
1167 static void iso_conn_big_sync(struct sock *sk)
1170 struct hci_dev *hdev;
1172 hdev = hci_get_route(&iso_pi(sk)->dst, &iso_pi(sk)->src,
1173 iso_pi(sk)->src_type);
1178 if (!test_and_set_bit(BT_SK_BIG_SYNC, &iso_pi(sk)->flags)) {
1179 err = hci_le_big_create_sync(hdev, iso_pi(sk)->conn->hcon,
1181 iso_pi(sk)->sync_handle,
1182 iso_pi(sk)->bc_num_bis,
1183 iso_pi(sk)->bc_bis);
1185 bt_dev_err(hdev, "hci_le_big_create_sync: %d",
1190 static int iso_sock_recvmsg(struct socket *sock, struct msghdr *msg,
1191 size_t len, int flags)
1193 struct sock *sk = sock->sk;
1194 struct iso_pinfo *pi = iso_pi(sk);
1196 BT_DBG("sk %p", sk);
1198 if (test_and_clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
1200 switch (sk->sk_state) {
1202 if (pi->conn->hcon &&
1203 test_bit(HCI_CONN_PA_SYNC, &pi->conn->hcon->flags)) {
1204 iso_conn_big_sync(sk);
1205 sk->sk_state = BT_LISTEN;
1207 iso_conn_defer_accept(pi->conn->hcon);
1208 sk->sk_state = BT_CONFIG;
1214 return iso_connect_cis(sk);
1221 return bt_sock_recvmsg(sock, msg, len, flags);
1224 static bool check_io_qos(struct bt_iso_io_qos *qos)
1226 /* If no PHY is enable SDU must be 0 */
1227 if (!qos->phy && qos->sdu)
1230 if (qos->interval && (qos->interval < 0xff || qos->interval > 0xfffff))
1233 if (qos->latency && (qos->latency < 0x05 || qos->latency > 0xfa0))
1236 if (qos->phy > BT_ISO_PHY_ANY)
1242 static bool check_ucast_qos(struct bt_iso_qos *qos)
1244 if (qos->ucast.cig > 0xef && qos->ucast.cig != BT_ISO_QOS_CIG_UNSET)
1247 if (qos->ucast.cis > 0xef && qos->ucast.cis != BT_ISO_QOS_CIS_UNSET)
1250 if (qos->ucast.sca > 0x07)
1253 if (qos->ucast.packing > 0x01)
1256 if (qos->ucast.framing > 0x01)
1259 if (!check_io_qos(&qos->ucast.in))
1262 if (!check_io_qos(&qos->ucast.out))
1268 static bool check_bcast_qos(struct bt_iso_qos *qos)
1270 if (qos->bcast.sync_factor == 0x00)
1273 if (qos->bcast.packing > 0x01)
1276 if (qos->bcast.framing > 0x01)
1279 if (!check_io_qos(&qos->bcast.in))
1282 if (!check_io_qos(&qos->bcast.out))
1285 if (qos->bcast.encryption > 0x01)
1288 if (qos->bcast.options > 0x07)
1291 if (qos->bcast.skip > 0x01f3)
1294 if (qos->bcast.sync_timeout < 0x000a || qos->bcast.sync_timeout > 0x4000)
1297 if (qos->bcast.sync_cte_type > 0x1f)
1300 if (qos->bcast.mse > 0x1f)
1303 if (qos->bcast.timeout < 0x000a || qos->bcast.timeout > 0x4000)
1309 static int iso_sock_setsockopt(struct socket *sock, int level, int optname,
1310 sockptr_t optval, unsigned int optlen)
1312 struct sock *sk = sock->sk;
1314 struct bt_iso_qos qos = default_qos;
1317 BT_DBG("sk %p", sk);
1322 case BT_DEFER_SETUP:
1323 if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
1328 if (copy_from_sockptr(&opt, optval, sizeof(u32))) {
1334 set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
1336 clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags);
1340 if (copy_from_sockptr(&opt, optval, sizeof(u32))) {
1346 set_bit(BT_SK_PKT_STATUS, &bt_sk(sk)->flags);
1348 clear_bit(BT_SK_PKT_STATUS, &bt_sk(sk)->flags);
1352 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND &&
1353 sk->sk_state != BT_CONNECT2) {
1358 len = min_t(unsigned int, sizeof(qos), optlen);
1360 if (copy_from_sockptr(&qos, optval, len)) {
1365 if (len == sizeof(qos.ucast) && !check_ucast_qos(&qos)) {
1370 iso_pi(sk)->qos = qos;
1371 iso_pi(sk)->qos_user_set = true;
1376 if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND &&
1377 sk->sk_state != BT_CONNECT2) {
1382 if (optlen > sizeof(iso_pi(sk)->base)) {
1387 len = min_t(unsigned int, sizeof(iso_pi(sk)->base), optlen);
1389 if (copy_from_sockptr(iso_pi(sk)->base, optval, len)) {
1394 iso_pi(sk)->base_len = len;
1407 static int iso_sock_getsockopt(struct socket *sock, int level, int optname,
1408 char __user *optval, int __user *optlen)
1410 struct sock *sk = sock->sk;
1412 struct bt_iso_qos *qos;
1416 BT_DBG("sk %p", sk);
1418 if (get_user(len, optlen))
1424 case BT_DEFER_SETUP:
1425 if (sk->sk_state == BT_CONNECTED) {
1430 if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags),
1431 (u32 __user *)optval))
1437 if (put_user(test_bit(BT_SK_PKT_STATUS, &bt_sk(sk)->flags),
1438 (int __user *)optval))
1443 qos = iso_sock_get_qos(sk);
1445 len = min_t(unsigned int, len, sizeof(*qos));
1446 if (copy_to_user(optval, qos, len))
1452 if (sk->sk_state == BT_CONNECTED &&
1453 !bacmp(&iso_pi(sk)->dst, BDADDR_ANY)) {
1454 base_len = iso_pi(sk)->conn->hcon->le_per_adv_data_len;
1455 base = iso_pi(sk)->conn->hcon->le_per_adv_data;
1457 base_len = iso_pi(sk)->base_len;
1458 base = iso_pi(sk)->base;
1461 len = min_t(unsigned int, len, base_len);
1462 if (copy_to_user(optval, base, len))
1476 static int iso_sock_shutdown(struct socket *sock, int how)
1478 struct sock *sk = sock->sk;
1481 BT_DBG("sock %p, sk %p, how %d", sock, sk, how);
1491 if (sk->sk_shutdown & RCV_SHUTDOWN)
1493 sk->sk_shutdown |= RCV_SHUTDOWN;
1496 if (sk->sk_shutdown & SEND_SHUTDOWN)
1498 sk->sk_shutdown |= SEND_SHUTDOWN;
1501 if (sk->sk_shutdown & SHUTDOWN_MASK)
1503 sk->sk_shutdown |= SHUTDOWN_MASK;
1507 iso_sock_clear_timer(sk);
1508 __iso_sock_close(sk);
1510 if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime &&
1511 !(current->flags & PF_EXITING))
1512 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
1521 static int iso_sock_release(struct socket *sock)
1523 struct sock *sk = sock->sk;
1526 BT_DBG("sock %p, sk %p", sock, sk);
1533 if (sock_flag(sk, SOCK_LINGER) && READ_ONCE(sk->sk_lingertime) &&
1534 !(current->flags & PF_EXITING)) {
1536 err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime);
1545 static void iso_sock_ready(struct sock *sk)
1547 BT_DBG("sk %p", sk);
1553 iso_sock_clear_timer(sk);
1554 sk->sk_state = BT_CONNECTED;
1555 sk->sk_state_change(sk);
1559 struct iso_list_data {
1560 struct hci_conn *hcon;
1564 static bool iso_match_big(struct sock *sk, void *data)
1566 struct hci_evt_le_big_sync_estabilished *ev = data;
1568 return ev->handle == iso_pi(sk)->qos.bcast.big;
1571 static bool iso_match_pa_sync_flag(struct sock *sk, void *data)
1573 return test_bit(BT_SK_PA_SYNC, &iso_pi(sk)->flags);
1576 static void iso_conn_ready(struct iso_conn *conn)
1578 struct sock *parent = NULL;
1579 struct sock *sk = conn->sk;
1580 struct hci_ev_le_big_sync_estabilished *ev = NULL;
1581 struct hci_ev_le_pa_sync_established *ev2 = NULL;
1582 struct hci_evt_le_big_info_adv_report *ev3 = NULL;
1583 struct hci_conn *hcon;
1585 BT_DBG("conn %p", conn);
1588 iso_sock_ready(conn->sk);
1594 if (test_bit(HCI_CONN_BIG_SYNC, &hcon->flags) ||
1595 test_bit(HCI_CONN_BIG_SYNC_FAILED, &hcon->flags)) {
1596 ev = hci_recv_event_data(hcon->hdev,
1597 HCI_EVT_LE_BIG_SYNC_ESTABILISHED);
1599 /* Get reference to PA sync parent socket, if it exists */
1600 parent = iso_get_sock_listen(&hcon->src,
1602 iso_match_pa_sync_flag, NULL);
1604 parent = iso_get_sock_listen(&hcon->src,
1607 } else if (test_bit(HCI_CONN_PA_SYNC_FAILED, &hcon->flags)) {
1608 ev2 = hci_recv_event_data(hcon->hdev,
1609 HCI_EV_LE_PA_SYNC_ESTABLISHED);
1611 parent = iso_get_sock_listen(&hcon->src,
1613 iso_match_sid, ev2);
1614 } else if (test_bit(HCI_CONN_PA_SYNC, &hcon->flags)) {
1615 ev3 = hci_recv_event_data(hcon->hdev,
1616 HCI_EVT_LE_BIG_INFO_ADV_REPORT);
1618 parent = iso_get_sock_listen(&hcon->src,
1620 iso_match_sync_handle, ev3);
1624 parent = iso_get_sock_listen(&hcon->src,
1625 BDADDR_ANY, NULL, NULL);
1632 sk = iso_sock_alloc(sock_net(parent), NULL,
1633 BTPROTO_ISO, GFP_ATOMIC, 0);
1635 release_sock(parent);
1639 iso_sock_init(sk, parent);
1641 bacpy(&iso_pi(sk)->src, &hcon->src);
1643 /* Convert from HCI to three-value type */
1644 if (hcon->src_type == ADDR_LE_DEV_PUBLIC)
1645 iso_pi(sk)->src_type = BDADDR_LE_PUBLIC;
1647 iso_pi(sk)->src_type = BDADDR_LE_RANDOM;
1649 /* If hcon has no destination address (BDADDR_ANY) it means it
1650 * was created by HCI_EV_LE_BIG_SYNC_ESTABILISHED or
1651 * HCI_EV_LE_PA_SYNC_ESTABLISHED so we need to initialize using
1652 * the parent socket destination address.
1654 if (!bacmp(&hcon->dst, BDADDR_ANY)) {
1655 bacpy(&hcon->dst, &iso_pi(parent)->dst);
1656 hcon->dst_type = iso_pi(parent)->dst_type;
1657 hcon->sync_handle = iso_pi(parent)->sync_handle;
1661 iso_pi(sk)->qos = iso_pi(parent)->qos;
1662 iso_pi(sk)->qos.bcast.encryption = ev3->encryption;
1663 hcon->iso_qos = iso_pi(sk)->qos;
1664 iso_pi(sk)->bc_num_bis = iso_pi(parent)->bc_num_bis;
1665 memcpy(iso_pi(sk)->bc_bis, iso_pi(parent)->bc_bis, ISO_MAX_NUM_BIS);
1666 set_bit(BT_SK_PA_SYNC, &iso_pi(sk)->flags);
1669 bacpy(&iso_pi(sk)->dst, &hcon->dst);
1670 iso_pi(sk)->dst_type = hcon->dst_type;
1671 iso_pi(sk)->sync_handle = iso_pi(parent)->sync_handle;
1672 memcpy(iso_pi(sk)->base, iso_pi(parent)->base, iso_pi(parent)->base_len);
1673 iso_pi(sk)->base_len = iso_pi(parent)->base_len;
1675 hci_conn_hold(hcon);
1676 iso_chan_add(conn, sk, parent);
1678 if ((ev && ((struct hci_evt_le_big_sync_estabilished *)ev)->status) ||
1679 (ev2 && ev2->status)) {
1680 /* Trigger error signal on child socket */
1681 sk->sk_err = ECONNREFUSED;
1682 sk->sk_error_report(sk);
1685 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags))
1686 sk->sk_state = BT_CONNECT2;
1688 sk->sk_state = BT_CONNECTED;
1690 /* Wake up parent */
1691 parent->sk_data_ready(parent);
1693 release_sock(parent);
1697 static bool iso_match_sid(struct sock *sk, void *data)
1699 struct hci_ev_le_pa_sync_established *ev = data;
1701 return ev->sid == iso_pi(sk)->bc_sid;
1704 static bool iso_match_sync_handle(struct sock *sk, void *data)
1706 struct hci_evt_le_big_info_adv_report *ev = data;
1708 return le16_to_cpu(ev->sync_handle) == iso_pi(sk)->sync_handle;
1711 static bool iso_match_sync_handle_pa_report(struct sock *sk, void *data)
1713 struct hci_ev_le_per_adv_report *ev = data;
1715 return le16_to_cpu(ev->sync_handle) == iso_pi(sk)->sync_handle;
1718 /* ----- ISO interface with lower layer (HCI) ----- */
1720 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags)
1722 struct hci_ev_le_pa_sync_established *ev1;
1723 struct hci_evt_le_big_info_adv_report *ev2;
1724 struct hci_ev_le_per_adv_report *ev3;
1728 bt_dev_dbg(hdev, "bdaddr %pMR", bdaddr);
1730 /* Broadcast receiver requires handling of some events before it can
1731 * proceed to establishing a BIG sync:
1733 * 1. HCI_EV_LE_PA_SYNC_ESTABLISHED: The socket may specify a specific
1734 * SID to listen to and once sync is estabilished its handle needs to
1735 * be stored in iso_pi(sk)->sync_handle so it can be matched once
1736 * receiving the BIG Info.
1737 * 2. HCI_EVT_LE_BIG_INFO_ADV_REPORT: When connect_ind is triggered by a
1738 * a BIG Info it attempts to check if there any listening socket with
1739 * the same sync_handle and if it does then attempt to create a sync.
1740 * 3. HCI_EV_LE_PER_ADV_REPORT: When a PA report is received, it is stored
1741 * in iso_pi(sk)->base so it can be passed up to user, in the case of a
1744 ev1 = hci_recv_event_data(hdev, HCI_EV_LE_PA_SYNC_ESTABLISHED);
1746 sk = iso_get_sock_listen(&hdev->bdaddr, bdaddr, iso_match_sid,
1748 if (sk && !ev1->status)
1749 iso_pi(sk)->sync_handle = le16_to_cpu(ev1->handle);
1754 ev2 = hci_recv_event_data(hdev, HCI_EVT_LE_BIG_INFO_ADV_REPORT);
1756 /* Try to get PA sync listening socket, if it exists */
1757 sk = iso_get_sock_listen(&hdev->bdaddr, bdaddr,
1758 iso_match_pa_sync_flag, NULL);
1760 sk = iso_get_sock_listen(&hdev->bdaddr, bdaddr,
1761 iso_match_sync_handle, ev2);
1765 if (ev2->num_bis < iso_pi(sk)->bc_num_bis)
1766 iso_pi(sk)->bc_num_bis = ev2->num_bis;
1768 if (!test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags) &&
1769 !test_and_set_bit(BT_SK_BIG_SYNC, &iso_pi(sk)->flags)) {
1770 err = hci_le_big_create_sync(hdev, NULL,
1772 iso_pi(sk)->sync_handle,
1773 iso_pi(sk)->bc_num_bis,
1774 iso_pi(sk)->bc_bis);
1776 bt_dev_err(hdev, "hci_le_big_create_sync: %d",
1784 ev3 = hci_recv_event_data(hdev, HCI_EV_LE_PER_ADV_REPORT);
1786 sk = iso_get_sock_listen(&hdev->bdaddr, bdaddr,
1787 iso_match_sync_handle_pa_report, ev3);
1790 memcpy(iso_pi(sk)->base, ev3->data, ev3->length);
1791 iso_pi(sk)->base_len = ev3->length;
1794 sk = iso_get_sock_listen(&hdev->bdaddr, BDADDR_ANY, NULL, NULL);
1801 lm |= HCI_LM_ACCEPT;
1803 if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))
1804 *flags |= HCI_PROTO_DEFER;
1809 static void iso_connect_cfm(struct hci_conn *hcon, __u8 status)
1811 if (hcon->type != ISO_LINK) {
1812 if (hcon->type != LE_LINK)
1815 /* Check if LE link has failed */
1817 struct hci_link *link, *t;
1819 list_for_each_entry_safe(link, t, &hcon->link_list,
1821 iso_conn_del(link->conn, bt_to_errno(status));
1826 /* Create CIS if pending */
1827 hci_le_create_cis_pending(hcon->hdev);
1831 BT_DBG("hcon %p bdaddr %pMR status %d", hcon, &hcon->dst, status);
1833 /* Similar to the success case, if HCI_CONN_BIG_SYNC_FAILED or
1834 * HCI_CONN_PA_SYNC_FAILED is set, queue the failed connection
1835 * into the accept queue of the listening socket and wake up
1836 * userspace, to inform the user about the event.
1838 if (!status || test_bit(HCI_CONN_BIG_SYNC_FAILED, &hcon->flags) ||
1839 test_bit(HCI_CONN_PA_SYNC_FAILED, &hcon->flags)) {
1840 struct iso_conn *conn;
1842 conn = iso_conn_add(hcon);
1844 iso_conn_ready(conn);
1846 iso_conn_del(hcon, bt_to_errno(status));
1850 static void iso_disconn_cfm(struct hci_conn *hcon, __u8 reason)
1852 if (hcon->type != ISO_LINK)
1855 BT_DBG("hcon %p reason %d", hcon, reason);
1857 iso_conn_del(hcon, bt_to_errno(reason));
1860 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags)
1862 struct iso_conn *conn = hcon->iso_data;
1868 pb = hci_iso_flags_pb(flags);
1869 ts = hci_iso_flags_ts(flags);
1871 BT_DBG("conn %p len %d pb 0x%x ts 0x%x", conn, skb->len, pb, ts);
1877 BT_ERR("Unexpected start frame (len %d)", skb->len);
1878 kfree_skb(conn->rx_skb);
1879 conn->rx_skb = NULL;
1884 struct hci_iso_ts_data_hdr *hdr;
1886 /* TODO: add timestamp to the packet? */
1887 hdr = skb_pull_data(skb, HCI_ISO_TS_DATA_HDR_SIZE);
1889 BT_ERR("Frame is too short (len %d)", skb->len);
1893 len = __le16_to_cpu(hdr->slen);
1895 struct hci_iso_data_hdr *hdr;
1897 hdr = skb_pull_data(skb, HCI_ISO_DATA_HDR_SIZE);
1899 BT_ERR("Frame is too short (len %d)", skb->len);
1903 len = __le16_to_cpu(hdr->slen);
1906 flags = hci_iso_data_flags(len);
1907 len = hci_iso_data_len(len);
1909 BT_DBG("Start: total len %d, frag len %d flags 0x%4.4x", len,
1912 if (len == skb->len) {
1913 /* Complete frame received */
1914 hci_skb_pkt_status(skb) = flags & 0x03;
1915 iso_recv_frame(conn, skb);
1919 if (pb == ISO_SINGLE) {
1920 BT_ERR("Frame malformed (len %d, expected len %d)",
1925 if (skb->len > len) {
1926 BT_ERR("Frame is too long (len %d, expected len %d)",
1931 /* Allocate skb for the complete frame (with header) */
1932 conn->rx_skb = bt_skb_alloc(len, GFP_KERNEL);
1936 hci_skb_pkt_status(conn->rx_skb) = flags & 0x03;
1937 skb_copy_from_linear_data(skb, skb_put(conn->rx_skb, skb->len),
1939 conn->rx_len = len - skb->len;
1943 BT_DBG("Cont: frag len %d (expecting %d)", skb->len,
1946 if (!conn->rx_len) {
1947 BT_ERR("Unexpected continuation frame (len %d)",
1952 if (skb->len > conn->rx_len) {
1953 BT_ERR("Fragment is too long (len %d, expected %d)",
1954 skb->len, conn->rx_len);
1955 kfree_skb(conn->rx_skb);
1956 conn->rx_skb = NULL;
1961 skb_copy_from_linear_data(skb, skb_put(conn->rx_skb, skb->len),
1963 conn->rx_len -= skb->len;
1967 skb_copy_from_linear_data(skb, skb_put(conn->rx_skb, skb->len),
1969 conn->rx_len -= skb->len;
1971 if (!conn->rx_len) {
1972 struct sk_buff *rx_skb = conn->rx_skb;
1974 /* Complete frame received. iso_recv_frame
1975 * takes ownership of the skb so set the global
1976 * rx_skb pointer to NULL first.
1978 conn->rx_skb = NULL;
1979 iso_recv_frame(conn, rx_skb);
1988 static struct hci_cb iso_cb = {
1990 .connect_cfm = iso_connect_cfm,
1991 .disconn_cfm = iso_disconn_cfm,
1994 static int iso_debugfs_show(struct seq_file *f, void *p)
1998 read_lock(&iso_sk_list.lock);
2000 sk_for_each(sk, &iso_sk_list.head) {
2001 seq_printf(f, "%pMR %pMR %d\n", &iso_pi(sk)->src,
2002 &iso_pi(sk)->dst, sk->sk_state);
2005 read_unlock(&iso_sk_list.lock);
2010 DEFINE_SHOW_ATTRIBUTE(iso_debugfs);
2012 static struct dentry *iso_debugfs;
2014 static const struct proto_ops iso_sock_ops = {
2015 .family = PF_BLUETOOTH,
2016 .owner = THIS_MODULE,
2017 .release = iso_sock_release,
2018 .bind = iso_sock_bind,
2019 .connect = iso_sock_connect,
2020 .listen = iso_sock_listen,
2021 .accept = iso_sock_accept,
2022 .getname = iso_sock_getname,
2023 .sendmsg = iso_sock_sendmsg,
2024 .recvmsg = iso_sock_recvmsg,
2025 .poll = bt_sock_poll,
2026 .ioctl = bt_sock_ioctl,
2027 .mmap = sock_no_mmap,
2028 .socketpair = sock_no_socketpair,
2029 .shutdown = iso_sock_shutdown,
2030 .setsockopt = iso_sock_setsockopt,
2031 .getsockopt = iso_sock_getsockopt
2034 static const struct net_proto_family iso_sock_family_ops = {
2035 .family = PF_BLUETOOTH,
2036 .owner = THIS_MODULE,
2037 .create = iso_sock_create,
2040 static bool iso_inited;
2042 bool iso_enabled(void)
2051 BUILD_BUG_ON(sizeof(struct sockaddr_iso) > sizeof(struct sockaddr));
2056 err = proto_register(&iso_proto, 0);
2060 err = bt_sock_register(BTPROTO_ISO, &iso_sock_family_ops);
2062 BT_ERR("ISO socket registration failed");
2066 err = bt_procfs_init(&init_net, "iso", &iso_sk_list, NULL);
2068 BT_ERR("Failed to create ISO proc file");
2069 bt_sock_unregister(BTPROTO_ISO);
2073 BT_INFO("ISO socket layer initialized");
2075 hci_register_cb(&iso_cb);
2077 if (IS_ERR_OR_NULL(bt_debugfs))
2081 iso_debugfs = debugfs_create_file("iso", 0444, bt_debugfs,
2082 NULL, &iso_debugfs_fops);
2090 proto_unregister(&iso_proto);
2099 bt_procfs_cleanup(&init_net, "iso");
2101 debugfs_remove(iso_debugfs);
2104 hci_unregister_cb(&iso_cb);
2106 bt_sock_unregister(BTPROTO_ISO);
2108 proto_unregister(&iso_proto);