int (*rtx_syn_ack)(struct sock *sk,
struct request_sock *req,
struct dst_entry *dst);
void (*send_ack)(struct sk_buff *skb,
struct request_sock *req);
int (*rtx_syn_ack)(struct sock *sk,
struct request_sock *req,
struct dst_entry *dst);
void (*send_ack)(struct sk_buff *skb,
struct request_sock *req);