udp_recvmsg
INDIRECT_CALLABLE_DECLARE(int udp_recvmsg(struct sock *, struct msghdr *,
err = INDIRECT_CALL_2(sk->sk_prot->recvmsg, tcp_recvmsg, udp_recvmsg,
.recvmsg = udp_recvmsg,
int udp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int flags,
.recvmsg = udp_recvmsg,