tcp: add init_cookie_seq method to tcp_request_sock_ops

Move the specific IPv4/IPv6 cookie sequence initialization to a new
method in tcp_request_sock_ops in preparation for unifying
tcp_v4_conn_request and tcp_v6_conn_request.

Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 1 deletions

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index f86a86b30d20..8c69e44c287b 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1264,6 +1264,9 @@ static const struct tcp_request_sock_ops tcp_request_sock_ipv4_ops = {
         .calc_md5_hash  =       tcp_v4_md5_hash_skb,
 #endif
         .init_req       =       tcp_v4_init_req,
+#ifdef CONFIG_SYN_COOKIES
+        .cookie_init_seq =      cookie_v4_init_sequence,
+#endif
 };
 
 int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
@@ -1331,7 +1334,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
                 TCP_ECN_create_request(req, skb, sock_net(sk));
 
         if (want_cookie) {
-                isn = cookie_v4_init_sequence(sk, skb, &req->mss);
+                isn = cookie_init_sequence(af_ops, sk, skb, &req->mss);
                 req->cookie_ts = tmp_opt.tstamp_ok;
         } else if (!isn) {
                 /* VJ's idea. We save last timestamp seen