From: Gustavo F. Padovan Date: Sat, 1 May 2010 19:15:38 +0000 (-0300) Subject: Bluetooth: Group the ack of I-frames into l2cap_data_channel_rrframe() X-Git-Tag: firefly_0821_release~9833^2~2087^2~214 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6e3a59819fac19006fe4255b87928e5a12c54532;p=firefly-linux-kernel-4.4.55.git Bluetooth: Group the ack of I-frames into l2cap_data_channel_rrframe() It also fix a bug: we weren't acknowledging I-frames when P=1. Note that when F=1 we are acknowledging packets before setting RemoteBusy to False. The spec says we should do that in the opposite order, but acknowledment of packets doesn't care about RemoteBusy flag so we can do that in the order we want. Signed-off-by: Gustavo F. Padovan Reviewed-by: João Paulo Rechi Vita Signed-off-by: Marcel Holtmann --- diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index 8937a842347a..d096c7c11ab5 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -3494,7 +3494,9 @@ expected: static inline void l2cap_data_channel_rrframe(struct sock *sk, u16 rx_control) { struct l2cap_pinfo *pi = l2cap_pi(sk); - u8 tx_seq = __get_reqseq(rx_control); + + pi->expected_ack_seq = __get_reqseq(rx_control); + l2cap_drop_acked_frames(sk); if (rx_control & L2CAP_CTRL_POLL) { l2cap_send_i_or_rr_or_rnr(sk); @@ -3502,8 +3504,6 @@ static inline void l2cap_data_channel_rrframe(struct sock *sk, u16 rx_control) } else if (rx_control & L2CAP_CTRL_FINAL) { pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY; - pi->expected_ack_seq = tx_seq; - l2cap_drop_acked_frames(sk); if (pi->conn_state & L2CAP_CONN_REJ_ACT) pi->conn_state &= ~L2CAP_CONN_REJ_ACT; @@ -3514,9 +3514,6 @@ static inline void l2cap_data_channel_rrframe(struct sock *sk, u16 rx_control) } } else { - pi->expected_ack_seq = tx_seq; - l2cap_drop_acked_frames(sk); - if ((pi->conn_state & L2CAP_CONN_REMOTE_BUSY) && (pi->unacked_frames > 0)) __mod_retrans_timer();