netfilter: xt_hashlimit: fix unused variable warning if IPv6 disabled

Fixes this warning when CONFIG_IP6_NF_IPTABLES is not enabled:

net/netfilter/xt_hashlimit.c: In function ‘hashlimit_init_dst’:
net/netfilter/xt_hashlimit.c:448:9: warning: unused variable ‘frag_off’ [-Wunused-variable]

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 8e4992101875086cd412154d102793c99ffa6bed..d95f9c963cde01cfcd4d6541de352c85f44fc6f8 100644 (file)
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -445,7 +445,6 @@ hashlimit_init_dst(const struct xt_hashlimit_htable *hinfo,
 {
        __be16 _ports[2], *ports;
        u8 nexthdr;
-       __be16 frag_off;
        int poff;
 
        memset(dst, 0, sizeof(*dst));
@@ -466,6 +465,9 @@ hashlimit_init_dst(const struct xt_hashlimit_htable *hinfo,
                break;
 #if IS_ENABLED(CONFIG_IP6_NF_IPTABLES)
        case NFPROTO_IPV6:
+       {
+               __be16 frag_off;
+
                if (hinfo->cfg.mode & XT_HASHLIMIT_HASH_DIP) {
                        memcpy(&dst->ip6.dst, &ipv6_hdr(skb)->daddr,
                               sizeof(dst->ip6.dst));
@@ -485,6 +487,7 @@ hashlimit_init_dst(const struct xt_hashlimit_htable *hinfo,
                if ((int)protoff < 0)
                        return -1;
                break;
+       }
 #endif
        default:
                BUG();