From: Ilpo Järvinen Date: Mon, 1 Oct 2007 22:27:19 +0000 (-0700) Subject: [TCP]: No fackets_out/highest_sack tuning when SACK isn't enabled X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=dc86967b54aaf64fb053cce83c05a4476d48583b;p=linux-beck.git [TCP]: No fackets_out/highest_sack tuning when SACK isn't enabled This was found due to bug report from Cedric Le Goater though it turned this turned out to be unrelated bug. Signed-off-by: Ilpo Järvinen Signed-off-by: David S. Miller --- diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c index 94c80113df7e..6199abeb0f5e 100644 --- a/net/ipv4/tcp_output.c +++ b/net/ipv4/tcp_output.c @@ -660,7 +660,7 @@ static void tcp_set_skb_tso_segs(struct sock *sk, struct sk_buff *skb, unsigned static void tcp_adjust_fackets_out(struct tcp_sock *tp, struct sk_buff *skb, int decr) { - if (!tp->sacked_out) + if (!tp->sacked_out || tcp_is_reno(tp)) return; if (!before(tp->highest_sack, TCP_SKB_CB(skb)->seq)) @@ -712,7 +712,8 @@ int tcp_fragment(struct sock *sk, struct sk_buff *skb, u32 len, unsigned int mss TCP_SKB_CB(buff)->end_seq = TCP_SKB_CB(skb)->end_seq; TCP_SKB_CB(skb)->end_seq = TCP_SKB_CB(buff)->seq; - if (tp->sacked_out && (TCP_SKB_CB(skb)->seq == tp->highest_sack)) + if (tcp_is_sack(tp) && tp->sacked_out && + (TCP_SKB_CB(skb)->seq == tp->highest_sack)) tp->highest_sack = TCP_SKB_CB(buff)->seq; /* PSH and FIN should only be set in the second packet. */ @@ -1718,7 +1719,7 @@ static void tcp_retrans_try_collapse(struct sock *sk, struct sk_buff *skb, int m BUG_ON(tcp_skb_pcount(skb) != 1 || tcp_skb_pcount(next_skb) != 1); - if (WARN_ON(tp->sacked_out && + if (WARN_ON(tcp_is_sack(tp) && tp->sacked_out && (TCP_SKB_CB(next_skb)->seq == tp->highest_sack))) return;