int arp_mc_map(__be32 addr, u8 *haddr, struct net_device *dev, int dir)
{
switch (dev->type) {
case ARPHRD_ETHER:
case ARPHRD_FDDI:
case ARPHRD_IEEE802:
ip_eth_mc_map(addr, haddr);
return 0;
case ARPHRD_IEEE802_TR:
ip_tr_mc_map(addr, haddr);
return 0;
case ARPHRD_INFINIBAND:
ip_ib_mc_map(addr, dev->broadcast, haddr);
return 0;
case ARPHRD_IPGRE:
ip_ipgre_mc_map(addr, dev->broadcast, haddr);
return 0;
default:
if (dir) {
memcpy(haddr, dev->broadcast, dev->addr_len);
return 0;
}
}
return -EINVAL;
}
HYFI_MC_STATIC unsigned int mc_pre_routing_hook(unsigned int hooknum, struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,
int(*okfn)(struct sk_buff *))
{
struct hyfi_net_bridge *hyfi_br = hyfi_bridge_get_by_dev(in);
struct mc_struct *mc = MC_DEV(hyfi_br);
struct ethhdr *eh = eth_hdr(skb);
struct net_bridge_port *port;
u8 dscp;
if (!mc || skb->pkt_type != PACKET_HOST ||
(port = hyfi_br_port_get(in)) == NULL)
goto out;
dscp = MC_DSCP(mc->dscp) & (~INET_ECN_MASK);
switch (ntohs(skb->protocol)) {
case ETH_P_IP:
{
const struct iphdr *iph = ip_hdr(skb);
if (ipv4_is_multicast(iph->daddr) && (!mc->enable_retag ||
(mc->enable_retag && (ipv4_get_dsfield(iph) == dscp)))) {
ip_eth_mc_map(iph->daddr, eh->h_dest);
if (mc->debug && printk_ratelimit()) {
MC_PRINT("Decap the group "MC_IP4_STR" back to "MC_MAC_STR"\n",
MC_IP4_FMT((u8 *)(&iph->daddr)) ,MC_MAC_FMT(eh->h_dest));
}
skb->pkt_type = PACKET_MULTICAST;
}
}
break;
#ifdef HYBRID_MC_MLD
case ETH_P_IPV6:
{
struct ipv6hdr *iph6 = ipv6_hdr(skb);
if (ipv6_addr_is_multicast(&iph6->daddr) && (!mc->enable_retag ||
(mc->enable_retag && (ipv6_get_dsfield(iph6) == dscp)))) {
ipv6_eth_mc_map(&iph6->daddr, eh->h_dest);
if (mc->debug && printk_ratelimit()) {
MC_PRINT("Decap the group "MC_IP6_STR" back to "MC_MAC_STR"\n",
MC_IP6_FMT((__be16 *)(&iph6->daddr)) ,MC_MAC_FMT(eh->h_dest));
}
skb->pkt_type = PACKET_MULTICAST;
}
}
break;
#endif
}
out:
return NF_ACCEPT;
}