net: fix two sparse warnings introduced by IGMP/MLD parsing exports
> net/core/skbuff.c:4108:13: sparse: incorrect type in assignment (different base types)
> net/ipv6/mcast_snoop.c:63 ipv6_mc_check_exthdrs() warn: unsigned 'offset' is never less than zero.
Introduced by 9afd85c9e4552b276e2f4cfefd622bdeeffbbf26
("net: Export IGMP/MLD message validation code")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/mcast_snoop.c b/net/ipv6/mcast_snoop.c
index 1a2cbc1..df8afe5 100644
--- a/net/ipv6/mcast_snoop.c
+++ b/net/ipv6/mcast_snoop.c
@@ -47,7 +47,7 @@
static int ipv6_mc_check_exthdrs(struct sk_buff *skb)
{
const struct ipv6hdr *ip6h;
- unsigned int offset;
+ int offset;
u8 nexthdr;
__be16 frag_off;