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Bluetooth: Move L2CAP timers to workqueue
L2CAP timers also need to run in process context. As the works in l2cap are small we are using the system worqueue. Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
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@ -482,10 +482,11 @@ struct l2cap_chan {
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__u32 remote_acc_lat;
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__u32 remote_flush_to;
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struct timer_list chan_timer;
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struct timer_list retrans_timer;
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struct timer_list monitor_timer;
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struct timer_list ack_timer;
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struct delayed_work chan_timer;
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struct delayed_work retrans_timer;
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struct delayed_work monitor_timer;
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struct delayed_work ack_timer;
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struct sk_buff *tx_send_head;
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struct sk_buff_head tx_q;
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struct sk_buff_head srej_q;
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@ -595,16 +596,16 @@ enum {
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};
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#define __set_chan_timer(c, t) l2cap_set_timer(c, &c->chan_timer, (t))
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#define __clear_chan_timer(c) l2cap_clear_timer(c, &c->chan_timer)
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#define __clear_chan_timer(c) l2cap_clear_timer(&c->chan_timer)
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#define __set_retrans_timer(c) l2cap_set_timer(c, &c->retrans_timer, \
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L2CAP_DEFAULT_RETRANS_TO);
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#define __clear_retrans_timer(c) l2cap_clear_timer(c, &c->retrans_timer)
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#define __clear_retrans_timer(c) l2cap_clear_timer(&c->retrans_timer)
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#define __set_monitor_timer(c) l2cap_set_timer(c, &c->monitor_timer, \
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L2CAP_DEFAULT_MONITOR_TO);
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#define __clear_monitor_timer(c) l2cap_clear_timer(c, &c->monitor_timer)
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#define __clear_monitor_timer(c) l2cap_clear_timer(&c->monitor_timer)
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#define __set_ack_timer(c) l2cap_set_timer(c, &chan->ack_timer, \
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L2CAP_DEFAULT_ACK_TO);
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#define __clear_ack_timer(c) l2cap_clear_timer(c, &c->ack_timer)
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#define __clear_ack_timer(c) l2cap_clear_timer(&c->ack_timer)
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static inline int __seq_offset(struct l2cap_chan *chan, __u16 seq1, __u16 seq2)
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{
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@ -213,20 +213,18 @@ static u16 l2cap_alloc_cid(struct l2cap_conn *conn)
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return 0;
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}
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static void l2cap_set_timer(struct l2cap_chan *chan, struct timer_list *timer, long timeout)
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static void l2cap_set_timer(struct l2cap_chan *chan, struct delayed_work *work, long timeout)
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{
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BT_DBG("chan %p state %d timeout %ld", chan, chan->state, timeout);
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if (!mod_timer(timer, jiffies + msecs_to_jiffies(timeout)))
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chan_hold(chan);
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cancel_delayed_work_sync(work);
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schedule_delayed_work(work, timeout);
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}
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static void l2cap_clear_timer(struct l2cap_chan *chan, struct timer_list *timer)
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static void l2cap_clear_timer(struct delayed_work *work)
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{
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BT_DBG("chan %p state %d", chan, chan->state);
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if (timer_pending(timer) && del_timer(timer))
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chan_put(chan);
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cancel_delayed_work_sync(work);
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}
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static char *state_to_string(int state)
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@ -264,23 +262,16 @@ static void l2cap_state_change(struct l2cap_chan *chan, int state)
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chan->ops->state_change(chan->data, state);
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}
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static void l2cap_chan_timeout(unsigned long arg)
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static void l2cap_chan_timeout(struct work_struct *work)
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{
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struct l2cap_chan *chan = (struct l2cap_chan *) arg;
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struct l2cap_chan *chan = container_of(work, struct l2cap_chan,
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chan_timer.work);
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struct sock *sk = chan->sk;
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int reason;
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BT_DBG("chan %p state %d", chan, chan->state);
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bh_lock_sock(sk);
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if (sock_owned_by_user(sk)) {
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/* sk is owned by user. Try again later */
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__set_chan_timer(chan, L2CAP_DISC_TIMEOUT);
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bh_unlock_sock(sk);
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chan_put(chan);
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return;
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}
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lock_sock(sk);
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if (chan->state == BT_CONNECTED || chan->state == BT_CONFIG)
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reason = ECONNREFUSED;
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@ -292,7 +283,7 @@ static void l2cap_chan_timeout(unsigned long arg)
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l2cap_chan_close(chan, reason);
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bh_unlock_sock(sk);
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release_sock(sk);
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chan->ops->close(chan->data);
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chan_put(chan);
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@ -312,7 +303,7 @@ struct l2cap_chan *l2cap_chan_create(struct sock *sk)
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list_add(&chan->global_l, &chan_list);
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write_unlock_bh(&chan_list_lock);
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setup_timer(&chan->chan_timer, l2cap_chan_timeout, (unsigned long) chan);
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INIT_DELAYED_WORK(&chan->chan_timer, l2cap_chan_timeout);
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chan->state = BT_OPEN;
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@ -1251,17 +1242,18 @@ int __l2cap_wait_ack(struct sock *sk)
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return err;
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}
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static void l2cap_monitor_timeout(unsigned long arg)
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static void l2cap_monitor_timeout(struct work_struct *work)
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{
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struct l2cap_chan *chan = (void *) arg;
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struct l2cap_chan *chan = container_of(work, struct l2cap_chan,
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monitor_timer.work);
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struct sock *sk = chan->sk;
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BT_DBG("chan %p", chan);
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bh_lock_sock(sk);
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lock_sock(sk);
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if (chan->retry_count >= chan->remote_max_tx) {
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l2cap_send_disconn_req(chan->conn, chan, ECONNABORTED);
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bh_unlock_sock(sk);
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release_sock(sk);
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return;
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}
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@ -1269,24 +1261,25 @@ static void l2cap_monitor_timeout(unsigned long arg)
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__set_monitor_timer(chan);
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l2cap_send_rr_or_rnr(chan, L2CAP_CTRL_POLL);
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bh_unlock_sock(sk);
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release_sock(sk);
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}
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static void l2cap_retrans_timeout(unsigned long arg)
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static void l2cap_retrans_timeout(struct work_struct *work)
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{
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struct l2cap_chan *chan = (void *) arg;
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struct l2cap_chan *chan = container_of(work, struct l2cap_chan,
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retrans_timer.work);
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struct sock *sk = chan->sk;
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BT_DBG("chan %p", chan);
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bh_lock_sock(sk);
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lock_sock(sk);
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chan->retry_count = 1;
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__set_monitor_timer(chan);
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set_bit(CONN_WAIT_F, &chan->conn_state);
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l2cap_send_rr_or_rnr(chan, L2CAP_CTRL_POLL);
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bh_unlock_sock(sk);
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release_sock(sk);
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}
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static void l2cap_drop_acked_frames(struct l2cap_chan *chan)
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@ -1955,13 +1948,14 @@ static void l2cap_add_opt_efs(void **ptr, struct l2cap_chan *chan)
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(unsigned long) &efs);
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}
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static void l2cap_ack_timeout(unsigned long arg)
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static void l2cap_ack_timeout(struct work_struct *work)
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{
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struct l2cap_chan *chan = (void *) arg;
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struct l2cap_chan *chan = container_of(work, struct l2cap_chan,
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ack_timer.work);
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bh_lock_sock(chan->sk);
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lock_sock(chan->sk);
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l2cap_send_ack(chan);
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bh_unlock_sock(chan->sk);
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release_sock(chan->sk);
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}
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static inline void l2cap_ertm_init(struct l2cap_chan *chan)
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@ -1974,11 +1968,9 @@ static inline void l2cap_ertm_init(struct l2cap_chan *chan)
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chan->num_acked = 0;
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chan->frames_sent = 0;
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setup_timer(&chan->retrans_timer, l2cap_retrans_timeout,
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(unsigned long) chan);
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setup_timer(&chan->monitor_timer, l2cap_monitor_timeout,
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(unsigned long) chan);
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setup_timer(&chan->ack_timer, l2cap_ack_timeout, (unsigned long) chan);
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INIT_DELAYED_WORK(&chan->retrans_timer, l2cap_retrans_timeout);
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INIT_DELAYED_WORK(&chan->monitor_timer, l2cap_monitor_timeout);
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INIT_DELAYED_WORK(&chan->ack_timer, l2cap_ack_timeout);
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skb_queue_head_init(&chan->srej_q);
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