From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue, 26 May 2009 18:50:25 +0000 (+0000)
Subject: tcp: Remove unnecessary window comparisons for GRO
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4a9a2968a17eae42ef5dffca8b37534c864e30cc;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

tcp: Remove unnecessary window comparisons for GRO

The window has already been checked as part of the flag word
so there is no need to check it explicitly.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index ff6adecc54c..313960e4cfd 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2559,7 +2559,7 @@ found:
 	flush |= flags & TCP_FLAG_CWR;
 	flush |= (flags ^ tcp_flag_word(th2)) &
 		  ~(TCP_FLAG_CWR | TCP_FLAG_FIN | TCP_FLAG_PSH);
-	flush |= (th->ack_seq ^ th2->ack_seq) | (th->window ^ th2->window);
+	flush |= th->ack_seq ^ th2->ack_seq;
 	for (i = sizeof(*th); !flush && i < thlen; i += 4)
 		flush |= *(u32 *)((u8 *)th + i) ^
 			 *(u32 *)((u8 *)th2 + i);