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authorHannes Frederic Sowa <hannes@stressinduktion.org>2013-12-14 07:29:29 +0100
committerDavid S. Miller <davem@davemloft.net>2013-12-14 02:01:27 -0500
commitf52d81dc27c3456c702e83183035142c222acdc7 (patch)
tree6b68f1c6b09264ed4378de02749839046a4f6f4f /net/ipv6/ip6_offload.c
parentdf012169da29f77989b3dec9a7c4dd1f7bb9785f (diff)
downloadlinux-f52d81dc27c3456c702e83183035142c222acdc7.tar.bz2
ipv6: fix compiler warning in ipv6_exthdrs_len
Commit 299603e8370a93dd5d8e8d800f0dff1ce2c53d36 ("net-gro: Prepare GRO stack for the upcoming tunneling support") used an uninitialized variable which leads to the following compiler warning: net/ipv6/ip6_offload.c: In function ‘ipv6_gro_complete’: net/ipv6/ip6_offload.c:178:24: warning: ‘optlen’ may be used uninitialized in this function [-Wmaybe-uninitialized] opth = (void *)opth + optlen; ^ net/ipv6/ip6_offload.c:164:22: note: ‘optlen’ was declared here int len = 0, proto, optlen; ^ Fix it up. Cc: Jerry Chu <hkchu@google.com> Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ip6_offload.c')
-rw-r--r--net/ipv6/ip6_offload.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index 7540a0ed75ae..08861f1ff883 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -161,7 +161,7 @@ static int ipv6_exthdrs_len(struct ipv6hdr *iph,
const struct net_offload **opps)
{
struct ipv6_opt_hdr *opth = NULL;
- int len = 0, proto, optlen;
+ int len = 0, optlen = 0, proto;
proto = iph->nexthdr;
for (;;) {
@@ -172,11 +172,12 @@ static int ipv6_exthdrs_len(struct ipv6hdr *iph,
if (!((*opps)->flags & INET6_PROTO_GSO_EXTHDR))
break;
}
- if (opth == NULL)
+ if (opth == NULL) {
opth = (void *)(iph+1);
- else
+ } else {
+ optlen = ipv6_optlen(opth);
opth = (void *)opth + optlen;
- optlen = ipv6_optlen(opth);
+ }
len += optlen;
proto = opth->nexthdr;
}