Symbol: UDP_BPF_IPV4
net/ipv4/udp_bpf.c
158
udp_bpf_rebuild_protos(&udp_bpf_prots[UDP_BPF_IPV4], &udp_prot);
net/ipv4/udp_bpf.c
165
int family = sk->sk_family == AF_INET ? UDP_BPF_IPV4 : UDP_BPF_IPV6;