netdev - [PATCH 03/21] [TCP]: Unite identical code from two seqno split blocks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sun,  2 Dec 2007 00:47:58 +0200
From:	"Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>
To:	David Miller <davem@...emloft.net>,
	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	netdev@...r.kernel.org,
	Stephen Hemminger <shemminger@...ux-foundation.org>,
	"Ilpo Järvinen" <ilpo.jarvinen@...sinki.fi>
Subject: [PATCH 03/21] [TCP]: Unite identical code from two seqno split blocks

From: =?ISO-8859-1?q?Ilpo_J=E4rvinen?= <ilpo.jarvinen@...sinki.fi>

Bogus seqno compares just mislead, the code is identical for
both sides of the seqno compare (and was even executed just
once because of return in between).

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@...sinki.fi>
---
 net/ipv4/tcp_input.c |    7 +------
 1 files changed, 1 insertions(+), 6 deletions(-)

diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index 6986a2d..29268df 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -1246,8 +1246,7 @@ static int tcp_sacktag_one(struct sk_buff *skb, struct tcp_sock *tp,
 	if (dup_sack && (sacked & TCPCB_RETRANS)) {
 		if (after(TCP_SKB_CB(skb)->end_seq, tp->undo_marker))
 			tp->undo_retrans--;
-		if (!after(TCP_SKB_CB(skb)->end_seq, tp->snd_una) &&
-		    (sacked & TCPCB_SACKED_ACKED))
+		if (sacked & TCPCB_SACKED_ACKED)
 			*reord = min(fack_count, *reord);
 	}
 
@@ -1310,10 +1309,6 @@ static int tcp_sacktag_one(struct sk_buff *skb, struct tcp_sock *tp,
 
 		if (after(TCP_SKB_CB(skb)->seq, tcp_highest_sack_seq(tp)))
 			tp->highest_sack = skb;
-
-	} else {
-		if (dup_sack && (sacked & TCPCB_RETRANS))
-			*reord = min(fack_count, *reord);
 	}
 
 	/* D-SACK. We can detect redundant retransmission in S|R and plain R
-- 
1.5.0.6

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html