From 803020c6fa63aa738cfda3329c9675b42023e9d2 Mon Sep 17 00:00:00 2001 From: "Gustavo F. Padovan" Date: Sat, 1 May 2010 16:15:41 -0300 Subject: [PATCH] Bluetooth: Change acknowledgement to use the value of txWindow MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Now that we can set the txWindow we need to change the acknowledgement procedure to ack after each (pi->txWindow/6 + 1). The plus 1 is to avoid the zero value. It also renames pi->num_to_ack to a better name: pi->num_acked. Signed-off-by: Gustavo F. Padovan Reviewed-by: João Paulo Rechi Vita Signed-off-by: Marcel Holtmann --- include/net/bluetooth/l2cap.h | 3 +-- net/bluetooth/l2cap.c | 7 ++++--- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h index 07ae4ccfffbd..059260bed4e8 100644 --- a/include/net/bluetooth/l2cap.h +++ b/include/net/bluetooth/l2cap.h @@ -30,7 +30,6 @@ #define L2CAP_DEFAULT_MIN_MTU 48 #define L2CAP_DEFAULT_FLUSH_TO 0xffff #define L2CAP_DEFAULT_TX_WINDOW 63 -#define L2CAP_DEFAULT_NUM_TO_ACK (L2CAP_DEFAULT_TX_WINDOW/5) #define L2CAP_DEFAULT_MAX_TX 3 #define L2CAP_DEFAULT_RETRANS_TO 1000 /* 1 second */ #define L2CAP_DEFAULT_MONITOR_TO 12000 /* 12 seconds */ @@ -333,7 +332,7 @@ struct l2cap_pinfo { __u8 frames_sent; __u8 unacked_frames; __u8 retry_count; - __u8 num_to_ack; + __u8 num_acked; __u16 sdu_len; __u16 partial_sdu_len; struct sk_buff *sdu; diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index 530079649b43..0b0b237bb786 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -2254,7 +2254,7 @@ static inline void l2cap_ertm_init(struct sock *sk) l2cap_pi(sk)->expected_ack_seq = 0; l2cap_pi(sk)->unacked_frames = 0; l2cap_pi(sk)->buffer_seq = 0; - l2cap_pi(sk)->num_to_ack = 0; + l2cap_pi(sk)->num_acked = 0; l2cap_pi(sk)->frames_sent = 0; setup_timer(&l2cap_pi(sk)->retrans_timer, @@ -3466,6 +3466,7 @@ static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, str u8 tx_seq = __get_txseq(rx_control); u8 req_seq = __get_reqseq(rx_control); u8 sar = rx_control >> L2CAP_CTRL_SAR_SHIFT; + int num_to_ack = (pi->tx_win/6) + 1; int err = 0; BT_DBG("sk %p rx_control 0x%4.4x len %d", sk, rx_control, skb->len); @@ -3553,8 +3554,8 @@ expected: __mod_ack_timer(); - pi->num_to_ack = (pi->num_to_ack + 1) % L2CAP_DEFAULT_NUM_TO_ACK; - if (pi->num_to_ack == L2CAP_DEFAULT_NUM_TO_ACK - 1) + pi->num_acked = (pi->num_acked + 1) % num_to_ack; + if (pi->num_acked == num_to_ack - 1) l2cap_send_ack(pi); return 0; -- 2.39.5