[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 @@
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 @@
&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;