tcp: unify tcp_v4_rtx_synack and tcp_v6_rtx_synack

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

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 8c05c25..8e9c28d 100644 (file)
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1573,6 +1573,8 @@ int tcp4_proc_init(void);
 void tcp4_proc_exit(void);
 #endif
 
+int tcp_rtx_synack(struct sock *sk, struct request_sock *req);
+
 /* TCP af-specific functions */
 struct tcp_sock_af_ops {
 #ifdef CONFIG_TCP_MD5SIG

diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index b5945ac..597dd9d 100644 (file)
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -845,18 +845,6 @@ static int tcp_v4_send_synack(struct sock *sk, struct dst_entry *dst,
        return err;
 }
 
-static int tcp_v4_rtx_synack(struct sock *sk, struct request_sock *req)
-{
-       const struct  tcp_request_sock_ops *af_ops = tcp_rsk(req)->af_specific;
-       int res = af_ops->send_synack(sk, NULL, NULL, req, 0, NULL);
-
-       if (!res) {
-               TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_RETRANSSEGS);
-               NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPSYNRETRANS);
-       }
-       return res;
-}
-
 /*
  *     IPv4 request_sock destructor.
  */
@@ -1269,7 +1257,7 @@ static struct dst_entry *tcp_v4_route_req(struct sock *sk, struct flowi *fl,
 struct request_sock_ops tcp_request_sock_ops __read_mostly = {
        .family         =       PF_INET,
        .obj_size       =       sizeof(struct tcp_request_sock),
-       .rtx_syn_ack    =       tcp_v4_rtx_synack,
+       .rtx_syn_ack    =       tcp_rtx_synack,
        .send_ack       =       tcp_v4_reqsk_send_ack,
        .destructor     =       tcp_v4_reqsk_destructor,
        .send_reset     =       tcp_v4_send_reset,

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index d92bce0..f8f2a94 100644 (file)
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -3299,3 +3299,18 @@ void tcp_send_probe0(struct sock *sk)
                                          TCP_RTO_MAX);
        }
 }
+
+int tcp_rtx_synack(struct sock *sk, struct request_sock *req)
+{
+       const struct tcp_request_sock_ops *af_ops = tcp_rsk(req)->af_specific;
+       struct flowi fl;
+       int res;
+
+       res = af_ops->send_synack(sk, NULL, &fl, req, 0, NULL);
+       if (!res) {
+               TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_RETRANSSEGS);
+               NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPSYNRETRANS);
+       }
+       return res;
+}
+EXPORT_SYMBOL(tcp_rtx_synack);

diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 210b610..41389bb 100644 (file)
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -506,19 +506,6 @@ done:
        return err;
 }
 
-static int tcp_v6_rtx_synack(struct sock *sk, struct request_sock *req)
-{
-       const struct tcp_request_sock_ops *af_ops = tcp_rsk(req)->af_specific;
-       struct flowi fl;
-       int res;
-
-       res = af_ops->send_synack(sk, NULL, &fl, req, 0, NULL);
-       if (!res) {
-               TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_RETRANSSEGS);
-               NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPSYNRETRANS);
-       }
-       return res;
-}
 
 static void tcp_v6_reqsk_destructor(struct request_sock *req)
 {
@@ -759,7 +746,7 @@ static struct dst_entry *tcp_v6_route_req(struct sock *sk, struct flowi *fl,
 struct request_sock_ops tcp6_request_sock_ops __read_mostly = {
        .family         =       AF_INET6,
        .obj_size       =       sizeof(struct tcp6_request_sock),
-       .rtx_syn_ack    =       tcp_v6_rtx_synack,
+       .rtx_syn_ack    =       tcp_rtx_synack,
        .send_ack       =       tcp_v6_reqsk_send_ack,
        .destructor     =       tcp_v6_reqsk_destructor,
        .send_reset     =       tcp_v6_send_reset,