From fd0b3ff707dc1f7837079044bd4eca7ed505f70d Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Tue, 16 Jun 2009 00:01:49 +0200 Subject: [PATCH] Bluetooth: Add proper shutdown support to SCO sockets The SCO sockets for Bluetooth audio setup and streaming are missing the shutdown implementation. This hasn't been a problem so far, but with a more deeper integration with PulseAudio it is important to shutdown SCO sockets properly. Also the Headset profile 1.2 has more detailed qualification tests that require that SCO and RFCOMM channels are terminated in the right order. A proper shutdown function is necessary for this. Based on a report by Johan Hedberg Signed-off-by: Marcel Holtmann Tested-by: Johan Hedberg --- net/bluetooth/sco.c | 49 +++++++++++++++++++++++++++++++-------------- 1 file changed, 34 insertions(+), 15 deletions(-) diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 51ae0c3e470a..13c27f17192c 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -359,20 +359,9 @@ static void sco_sock_kill(struct sock *sk) sock_put(sk); } -/* Close socket. - * Must be called on unlocked socket. - */ -static void sco_sock_close(struct sock *sk) +static void __sco_sock_close(struct sock *sk) { - struct sco_conn *conn; - - sco_sock_clear_timer(sk); - - lock_sock(sk); - - conn = sco_pi(sk)->conn; - - BT_DBG("sk %p state %d conn %p socket %p", sk, sk->sk_state, conn, sk->sk_socket); + BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); switch (sk->sk_state) { case BT_LISTEN: @@ -390,9 +379,15 @@ static void sco_sock_close(struct sock *sk) sock_set_flag(sk, SOCK_ZAPPED); break; } +} +/* Must be called on unlocked socket. */ +static void sco_sock_close(struct sock *sk) +{ + sco_sock_clear_timer(sk); + lock_sock(sk); + __sco_sock_close(sk); release_sock(sk); - sco_sock_kill(sk); } @@ -748,6 +743,30 @@ static int sco_sock_getsockopt(struct socket *sock, int level, int optname, char return err; } +static int sco_sock_shutdown(struct socket *sock, int how) +{ + struct sock *sk = sock->sk; + int err = 0; + + BT_DBG("sock %p, sk %p", sock, sk); + + if (!sk) + return 0; + + lock_sock(sk); + if (!sk->sk_shutdown) { + sk->sk_shutdown = SHUTDOWN_MASK; + sco_sock_clear_timer(sk); + __sco_sock_close(sk); + + if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) + err = bt_sock_wait_state(sk, BT_CLOSED, + sk->sk_lingertime); + } + release_sock(sk); + return err; +} + static int sco_sock_release(struct socket *sock) { struct sock *sk = sock->sk; @@ -969,7 +988,7 @@ static const struct proto_ops sco_sock_ops = { .ioctl = bt_sock_ioctl, .mmap = sock_no_mmap, .socketpair = sock_no_socketpair, - .shutdown = sock_no_shutdown, + .shutdown = sco_sock_shutdown, .setsockopt = sco_sock_setsockopt, .getsockopt = sco_sock_getsockopt }; -- 2.39.2