From 0e587be728a522fd8e522ad905b02f2892b61712 Mon Sep 17 00:00:00 2001 From: Andrei Emeltchenko Date: Tue, 21 Feb 2012 12:54:57 +0200 Subject: [PATCH] Bluetooth: Add locked and unlocked state_change Split to locked and unlocked versions of l2cap_state_change helping to remove socket locks from l2cap code. Signed-off-by: Andrei Emeltchenko Acked-by: Marcel Holtmann Reviewed-by: Ulisses Furquim Acked-by: Gustavo F. Padovan Signed-off-by: Johan Hedberg --- net/bluetooth/l2cap_core.c | 41 +++++++++++++++++++++++--------------- 1 file changed, 25 insertions(+), 16 deletions(-) diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c index e39eba1ac4da..4638dbbaa4b2 100644 --- a/net/bluetooth/l2cap_core.c +++ b/net/bluetooth/l2cap_core.c @@ -199,7 +199,7 @@ static u16 l2cap_alloc_cid(struct l2cap_conn *conn) return 0; } -static void l2cap_state_change(struct l2cap_chan *chan, int state) +static void __l2cap_state_change(struct l2cap_chan *chan, int state) { BT_DBG("chan %p %s -> %s", chan, state_to_string(chan->state), state_to_string(state)); @@ -208,6 +208,15 @@ static void l2cap_state_change(struct l2cap_chan *chan, int state) chan->ops->state_change(chan->data, state); } +static void l2cap_state_change(struct l2cap_chan *chan, int state) +{ + struct sock *sk = chan->sk; + + lock_sock(sk); + __l2cap_state_change(chan, state); + release_sock(sk); +} + static void l2cap_chan_timeout(struct work_struct *work) { struct l2cap_chan *chan = container_of(work, struct l2cap_chan, @@ -348,7 +357,7 @@ static void l2cap_chan_del(struct l2cap_chan *chan, int err) hci_conn_put(conn->hcon); } - l2cap_state_change(chan, BT_CLOSED); + __l2cap_state_change(chan, BT_CLOSED); sock_set_flag(sk, SOCK_ZAPPED); if (err) @@ -413,7 +422,7 @@ void l2cap_chan_close(struct l2cap_chan *chan, int reason) case BT_LISTEN: l2cap_chan_cleanup_listen(sk); - l2cap_state_change(chan, BT_CLOSED); + __l2cap_state_change(chan, BT_CLOSED); sock_set_flag(sk, SOCK_ZAPPED); break; @@ -704,7 +713,7 @@ static void l2cap_send_disconn_req(struct l2cap_conn *conn, struct l2cap_chan *c l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_DISCONN_REQ, sizeof(req), &req); - l2cap_state_change(chan, BT_DISCONN); + __l2cap_state_change(chan, BT_DISCONN); sk->sk_err = err; } @@ -770,7 +779,7 @@ static void l2cap_conn_start(struct l2cap_conn *conn) parent->sk_data_ready(parent, 0); } else { - l2cap_state_change(chan, BT_CONFIG); + __l2cap_state_change(chan, BT_CONFIG); rsp.result = cpu_to_le16(L2CAP_CR_SUCCESS); rsp.status = cpu_to_le16(L2CAP_CS_NO_INFO); } @@ -873,7 +882,7 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn) __set_chan_timer(chan, sk->sk_sndtimeo); - l2cap_state_change(chan, BT_CONNECTED); + __l2cap_state_change(chan, BT_CONNECTED); parent->sk_data_ready(parent, 0); clean: @@ -890,7 +899,7 @@ static void l2cap_chan_ready(struct l2cap_chan *chan) chan->conf_state = 0; __clear_chan_timer(chan); - l2cap_state_change(chan, BT_CONNECTED); + __l2cap_state_change(chan, BT_CONNECTED); sk->sk_state_change(sk); if (parent) @@ -922,7 +931,7 @@ static void l2cap_conn_ready(struct l2cap_conn *conn) } else if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED) { __clear_chan_timer(chan); - l2cap_state_change(chan, BT_CONNECTED); + __l2cap_state_change(chan, BT_CONNECTED); sk->sk_state_change(sk); } else if (chan->state == BT_CONNECT) @@ -1196,14 +1205,14 @@ int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid, bdaddr_t *d l2cap_chan_add(conn, chan); - l2cap_state_change(chan, BT_CONNECT); + __l2cap_state_change(chan, BT_CONNECT); __set_chan_timer(chan, sk->sk_sndtimeo); if (hcon->state == BT_CONNECTED) { if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED) { __clear_chan_timer(chan); if (l2cap_chan_check_security(chan)) - l2cap_state_change(chan, BT_CONNECTED); + __l2cap_state_change(chan, BT_CONNECTED); } else l2cap_do_start(chan); } @@ -2650,22 +2659,22 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd if (conn->info_state & L2CAP_INFO_FEAT_MASK_REQ_DONE) { if (l2cap_chan_check_security(chan)) { if (bt_sk(sk)->defer_setup) { - l2cap_state_change(chan, BT_CONNECT2); + __l2cap_state_change(chan, BT_CONNECT2); result = L2CAP_CR_PEND; status = L2CAP_CS_AUTHOR_PEND; parent->sk_data_ready(parent, 0); } else { - l2cap_state_change(chan, BT_CONFIG); + __l2cap_state_change(chan, BT_CONFIG); result = L2CAP_CR_SUCCESS; status = L2CAP_CS_NO_INFO; } } else { - l2cap_state_change(chan, BT_CONNECT2); + __l2cap_state_change(chan, BT_CONNECT2); result = L2CAP_CR_PEND; status = L2CAP_CS_AUTHEN_PEND; } } else { - l2cap_state_change(chan, BT_CONNECT2); + __l2cap_state_change(chan, BT_CONNECT2); result = L2CAP_CR_PEND; status = L2CAP_CS_NO_INFO; } @@ -4584,12 +4593,12 @@ int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt) if (parent) parent->sk_data_ready(parent, 0); } else { - l2cap_state_change(chan, BT_CONFIG); + __l2cap_state_change(chan, BT_CONFIG); res = L2CAP_CR_SUCCESS; stat = L2CAP_CS_NO_INFO; } } else { - l2cap_state_change(chan, BT_DISCONN); + __l2cap_state_change(chan, BT_DISCONN); __set_chan_timer(chan, msecs_to_jiffies(L2CAP_DISC_TIMEOUT)); res = L2CAP_CR_SEC_BLOCK; -- 2.30.2