diff options
| -rw-r--r-- | net/netfilter/xt_pkttype.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/net/netfilter/xt_pkttype.c b/net/netfilter/xt_pkttype.c index 080f324..cbcb8ea 100644 --- a/net/netfilter/xt_pkttype.c +++ b/net/netfilter/xt_pkttype.c @@ -11,6 +11,7 @@ #include <linux/if_packet.h> #include <linux/in.h> #include <linux/ip.h> +#include <linux/ipv6.h> #include <linux/netfilter/xt_pkttype.h> #include <linux/netfilter/x_tables.h> @@ -27,16 +28,19 @@ pkttype_mt(const struct sk_buff *skb, const struct net_device *in, const void *matchinfo, int offset, unsigned int protoff, bool *hotdrop) { - u_int8_t type; const struct xt_pkttype_info *info = matchinfo; + u_int8_t type; - if (skb->pkt_type == PACKET_LOOPBACK) - type = match->family == AF_INET && - ipv4_is_multicast(ip_hdr(skb)->daddr) - ? PACKET_MULTICAST - : PACKET_BROADCAST; - else + if (skb->pkt_type != PACKET_LOOPBACK) type = skb->pkt_type; + else if (match->family == AF_INET && + ipv4_is_multicast(ip_hdr(skb)->daddr)) + type = PACKET_MULTICAST; + else if (match->family == AF_INET6 && + ipv6_hdr(skb)->daddr.s6_addr[0] == 0xFF) + type = PACKET_MULTICAST; + else + type = PACKET_BROADCAST; return (type == info->pkttype) ^ info->invert; } |