message_handshake_cookie
void wg_cookie_message_create(struct message_handshake_cookie *dst,
void wg_cookie_message_consume(struct message_handshake_cookie *src,
void wg_cookie_message_create(struct message_handshake_cookie *src,
void wg_cookie_message_consume(struct message_handshake_cookie *src,
(struct message_handshake_cookie *)skb->data, wg);
skb->len == sizeof(struct message_handshake_cookie))
return sizeof(struct message_handshake_cookie);
struct message_handshake_cookie packet;