From b7d4815f35ab1d0f1eef2521a94a7d4c789290a2 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ilpo=20J=C3=A4rvinen?= Date: Thu, 15 Nov 2007 19:43:56 -0800 Subject: [PATCH] [TCP]: Prior_fackets can be replaced by highest_sack seq MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Signed-off-by: Ilpo Järvinen Signed-off-by: David S. Miller --- net/ipv4/tcp_input.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 7a2bfd85ff..5e01ac2c00 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -1251,7 +1251,6 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_ struct sk_buff *cached_skb; int num_sacks = (ptr[1] - TCPOLEN_SACK_BASE)>>3; int reord = tp->packets_out; - int prior_fackets; int flag = 0; int found_dup_sack = 0; int cached_fack_count; @@ -1264,7 +1263,6 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_ tp->fackets_out = 0; tp->highest_sack = tcp_write_queue_head(sk); } - prior_fackets = tp->fackets_out; found_dup_sack = tcp_check_dsack(tp, ack_skb, sp, num_sacks, prior_snd_una); @@ -1457,7 +1455,8 @@ tcp_sacktag_write_queue(struct sock *sk, struct sk_buff *ack_skb, u32 prior_snd_ /* New sack for not retransmitted frame, * which was in hole. It is reordering. */ - if (fack_count < prior_fackets) + if (before(TCP_SKB_CB(skb)->seq, + tcp_highest_sack_seq(tp))) reord = min(fack_count, reord); /* SACK enhanced F-RTO (RFC4138; Appendix B) */ -- 2.39.5