From: Eric Dumazet <edumazet@google.com>
Date: Thu, 4 Jun 2015 15:01:12 +0000 (-0700)
Subject: tcp: remove redundant checks II
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=98da81a426a76c351f3c2854d5bc31f17bba3194;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

tcp: remove redundant checks II

For same reasons than in commit 12e25e1041d0 ("tcp: remove redundant
checks"), we can remove redundant checks done for timewait sockets.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 3130c42240c8..d7d4c2b79cf2 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1671,10 +1671,6 @@ do_time_wait:
 		goto discard_it;
 	}
 
-	if (skb->len < (th->doff << 2)) {
-		inet_twsk_put(inet_twsk(sk));
-		goto bad_packet;
-	}
 	if (tcp_checksum_complete(skb)) {
 		inet_twsk_put(inet_twsk(sk));
 		goto csum_error;
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index b72e1ffc6bb4..45a7176ed460 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -1467,10 +1467,6 @@ do_time_wait:
 
 	tcp_v6_fill_cb(skb, hdr, th);
 
-	if (skb->len < (th->doff<<2)) {
-		inet_twsk_put(inet_twsk(sk));
-		goto bad_packet;
-	}
 	if (tcp_checksum_complete(skb)) {
 		inet_twsk_put(inet_twsk(sk));
 		goto csum_error;