path: root/net/ipv4/tcp_output.c
diff options
authorDavid S. Miller <davem@davemloft.net>2005-07-05 15:17:45 -0700
committerDavid S. Miller <davem@davemloft.net>2005-07-05 15:17:45 -0700
commitfc6415bcb0f58f03adb910e56d7e1df6368794e0 (patch)
tree71c326c1176e87c57c80cb32d9049b813f58bced /net/ipv4/tcp_output.c
parentc65f7f00c587828e3d50737805a78f74804972de (diff)
[TCP]: Fix quick-ack decrementing with TSO.
On each packet output, we call tcp_dec_quickack_mode() if the ACK flag is set. It drops tp->ack.quick until it hits zero, at which time we deflate the ATO value. When doing TSO, we are emitting multiple packets with ACK set, so we should decrement tp->ack.quick that many segments. Note that, unlike this case, tcp_enter_cwr() should not take the tcp_skb_pcount(skb) into consideration. That function, one time, readjusts tp->snd_cwnd and moves into TCP_CA_CWR state. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_output.c')
1 files changed, 3 insertions, 3 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 0e17c244875c..389deeb2a457 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -140,11 +140,11 @@ static inline void tcp_event_data_sent(struct tcp_sock *tp,
tp->ack.pingpong = 1;
-static __inline__ void tcp_event_ack_sent(struct sock *sk)
+static __inline__ void tcp_event_ack_sent(struct sock *sk, unsigned int pkts)
struct tcp_sock *tp = tcp_sk(sk);
- tcp_dec_quickack_mode(tp);
+ tcp_dec_quickack_mode(tp, pkts);
tcp_clear_xmit_timer(sk, TCP_TIME_DACK);
@@ -355,7 +355,7 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb)
tp->af_specific->send_check(sk, th, skb->len, skb);
if (tcb->flags & TCPCB_FLAG_ACK)
- tcp_event_ack_sent(sk);
+ tcp_event_ack_sent(sk, tcp_skb_pcount(skb));
if (skb->len != tcp_header_size)
tcp_event_data_sent(tp, skb, sk);