udp4_lib_lookup   151 include/net/udp.h extern struct sock *udp4_lib_lookup(struct net *net, __be32 saddr, __be16 sport,
udp4_lib_lookup    42 net/netfilter/nf_tproxy_core.c 		sk = udp4_lib_lookup(net, saddr, sport, daddr, dport,