irdma_mcast_mac
irdma_mcast_mac(ip_addr, dmac, false);
irdma_mcast_mac(ip_addr, dmac, true);
irdma_mcast_mac(ah_info->dest_ip_addr, dmac, true);
irdma_mcast_mac(ah_info->dest_ip_addr, dmac, false);
void irdma_mcast_mac(u32 *ip_addr, u8 *mac, bool ipv4);