netfilter: xt_iprange: add IPv6 match debug print code

Signed-off-by: Thomas Jacob <jacob@internet24.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>

diff --git a/net/netfilter/xt_iprange.c b/net/netfilter/xt_iprange.c
index 77b9ebc..d3eb5ed 100644 (file)
--- a/net/netfilter/xt_iprange.c
+++ b/net/netfilter/xt_iprange.c
@@ -78,15 +78,27 @@ iprange_mt6(const struct sk_buff *skb, struct xt_action_param *par)
                m  = iprange_ipv6_sub(&iph->saddr, &info->src_min.in6) < 0;
                m |= iprange_ipv6_sub(&iph->saddr, &info->src_max.in6) > 0;
                m ^= !!(info->flags & IPRANGE_SRC_INV);
-               if (m)
+               if (m) {
+                       pr_debug("src IP %pI6 NOT in range %s%pI6-%pI6\n",
+                                &iph->saddr,
+                                (info->flags & IPRANGE_SRC_INV) ? "(INV) " : "",
+                                &info->src_min.in6,
+                                &info->src_max.in6);
                        return false;
+               }
        }
        if (info->flags & IPRANGE_DST) {
                m  = iprange_ipv6_sub(&iph->daddr, &info->dst_min.in6) < 0;
                m |= iprange_ipv6_sub(&iph->daddr, &info->dst_max.in6) > 0;
                m ^= !!(info->flags & IPRANGE_DST_INV);
-               if (m)
+               if (m) {
+                       pr_debug("dst IP %pI6 NOT in range %s%pI6-%pI6\n",
+                                &iph->daddr,
+                                (info->flags & IPRANGE_DST_INV) ? "(INV) " : "",
+                                &info->dst_min.in6,
+                                &info->dst_max.in6);
                        return false;
+               }
        }
        return true;
 }