tcp_v4_md5_hash_skb
void tcp_v4_md5_hash_skb(char *md5_hash, const struct tcp_md5sig_key *key,
tcp_v4_md5_hash_skb(newhash, key, NULL, skb);
EXPORT_IPV6_MOD(tcp_v4_md5_hash_skb);
.calc_md5_hash = tcp_v4_md5_hash_skb,
.calc_md5_hash = tcp_v4_md5_hash_skb,
tcp_v4_md5_hash_skb(newhash, key, NULL, skb);
.calc_md5_hash = tcp_v4_md5_hash_skb,