From 1574639411b3ce311b846cae7fda56bf1af7d027 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Wed, 21 Mar 2018 19:34:58 +0000 Subject: gre: fix TUNNEL_SEQ bit check on sequence numbering The current logic of flags | TUNNEL_SEQ is always non-zero and hence sequence numbers are always incremented no matter the setting of the TUNNEL_SEQ bit. Fix this by using & instead of |. Detected by CoverityScan, CID#1466039 ("Operands don't affect result") Fixes: 77a5196a804e ("gre: add sequence number for collect md mode.") Signed-off-by: Colin Ian King Acked-by: William Tu Signed-off-by: David S. Miller --- net/ipv6/ip6_gre.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/ipv6') diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c index 7d8775c9570d..6adbcf40cf8c 100644 --- a/net/ipv6/ip6_gre.c +++ b/net/ipv6/ip6_gre.c @@ -724,7 +724,7 @@ static netdev_tx_t __gre6_xmit(struct sk_buff *skb, gre_build_header(skb, tunnel->tun_hlen, flags, protocol, tunnel_id_to_key32(tun_info->key.tun_id), - (flags | TUNNEL_SEQ) ? htonl(tunnel->o_seqno++) + (flags & TUNNEL_SEQ) ? htonl(tunnel->o_seqno++) : 0); } else { -- cgit v1.2.3