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| author | David S. Miller <davem@davemloft.net> | 2005-07-05 15:17:45 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-07-05 15:17:45 -0700 |
| commit | fc6415bcb0f58f03adb910e56d7e1df6368794e0 (patch) | |
| tree | 71c326c1176e87c57c80cb32d9049b813f58bced /net | |
| parent | c65f7f00c587828e3d50737805a78f74804972de (diff) | |
| download | kernel-mfld-blackbay-fc6415bcb0f58f03adb910e56d7e1df6368794e0.tar.gz kernel-mfld-blackbay-fc6415bcb0f58f03adb910e56d7e1df6368794e0.tar.bz2 kernel-mfld-blackbay-fc6415bcb0f58f03adb910e56d7e1df6368794e0.zip | |
[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')
| -rw-r--r-- | net/ipv4/tcp_output.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 0e17c244875..389deeb2a45 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); |