From: Brian Haley <brian.haley@hp.com>
Date: Fri, 10 Nov 2006 22:54:51 +0000 (-0800)
Subject: [IPv6]: Only modify checksum for UDP
X-Git-Tag: v2.6.20-rc2~6^2~13^2~400
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d3a1be9cba86c4385a5fe46673bbb4730551f454;p=platform%2Fkernel%2Flinux-exynos.git

[IPv6]: Only modify checksum for UDP

Only change upper-layer checksum from 0 to 0xFFFF for UDP (as RFC 768
states), not for others as RFC 4443 doesn't require it.

Signed-off-by: Brian Haley <brian.haley@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 52cca93..bd51847 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -247,8 +247,6 @@ static int icmpv6_push_pending_frames(struct sock *sk, struct flowi *fl, struct
 					   len, fl->proto, tmp_csum);
 		icmp6h->icmp6_cksum = tmp_csum;
 	}
-	if (icmp6h->icmp6_cksum == 0)
-		icmp6h->icmp6_cksum = -1;
 	ip6_push_pending_frames(sk);
 out:
 	return err;
diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
index 18a9007..813fa1d 100644
--- a/net/ipv6/raw.c
+++ b/net/ipv6/raw.c
@@ -536,7 +536,7 @@ static int rawv6_push_pending_frames(struct sock *sk, struct flowi *fl,
 				   &fl->fl6_dst,
 				   total_len, fl->proto, tmp_csum);
 
-	if (tmp_csum == 0)
+	if (tmp_csum == 0 && fl->proto == IPPROTO_UDP)
 		tmp_csum = -1;
 
 	csum = tmp_csum;