ip_mc_validate_source 179 include/net/route.h int ip_mc_validate_source(struct sk_buff *skb, __be32 daddr, __be32 saddr, ip_mc_validate_source 1726 net/ipv4/route.c err = ip_mc_validate_source(skb, daddr, saddr, tos, dev, in_dev, &itag); ip_mc_validate_source 2494 net/ipv4/udp.c return ip_mc_validate_source(skb, iph->daddr,