inet: makes syn_ack_timeout mandatory

There are two struct request_sock_ops providers, tcp and dccp.

inet_csk_reqsk_queue_prune() can avoid testing syn_ack_timeout being
NULL if we make it non NULL like syn_ack_timeout

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Cc: dccp@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 7 insertions, 0 deletions

diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c
index caf6e1734b62..07f5579ca756 100644
--- a/net/dccp/ipv4.c
+++ b/net/dccp/ipv4.c
@@ -574,6 +574,11 @@ static void dccp_v4_reqsk_destructor(struct request_sock *req)
         kfree(inet_rsk(req)->opt);
 }
 
+void dccp_syn_ack_timeout(struct sock *sk, struct request_sock *req)
+{
+}
+EXPORT_SYMBOL(dccp_syn_ack_timeout);
+
 static struct request_sock_ops dccp_request_sock_ops __read_mostly = {
         .family         = PF_INET,
         .obj_size       = sizeof(struct dccp_request_sock),
@@ -581,6 +586,7 @@ static struct request_sock_ops dccp_request_sock_ops __read_mostly = {
         .send_ack       = dccp_reqsk_send_ack,
         .destructor     = dccp_v4_reqsk_destructor,
         .send_reset     = dccp_v4_ctl_send_reset,
+        .syn_ack_timeout = dccp_syn_ack_timeout,
 };
 
 int dccp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
diff --git a/net/dccp/ipv6.c b/net/dccp/ipv6.c
index 4dc588f520e0..e923ac95bb04 100644
--- a/net/dccp/ipv6.c
+++ b/net/dccp/ipv6.c
@@ -343,6 +343,7 @@ static struct request_sock_ops dccp6_request_sock_ops = {
         .send_ack       = dccp_reqsk_send_ack,
         .destructor     = dccp_v6_reqsk_destructor,
         .send_reset     = dccp_v6_ctl_send_reset,
+        .syn_ack_timeout = dccp_syn_ack_timeout,
 };
 
 static struct sock *dccp_v6_hnd_req(struct sock *sk,struct sk_buff *skb)