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authorEric Dumazet <edumazet@google.com>2012-04-13 02:16:05 +0400
committerDavid S. Miller <davem@davemloft.net>2012-04-14 23:24:26 +0400
commitc72e118334a2590f4f07d9e51490b902c33f5280 (patch)
treed8974faaaf6afa5afe2b771e3a5390ee6ec97c21
parentfd4f2cead6983735a4e6283126b9276873d7ff09 (diff)
downloadlinux-c72e118334a2590f4f07d9e51490b902c33f5280.tar.xz
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>
-rw-r--r--include/linux/dccp.h2
-rw-r--r--net/dccp/ipv4.c6
-rw-r--r--net/dccp/ipv6.c1
-rw-r--r--net/ipv4/inet_connection_sock.c3
4 files changed, 10 insertions, 2 deletions
diff --git a/include/linux/dccp.h b/include/linux/dccp.h
index eaf95a023af4..d16294e2a118 100644
--- a/include/linux/dccp.h
+++ b/include/linux/dccp.h
@@ -549,6 +549,8 @@ static inline const char *dccp_role(const struct sock *sk)
return NULL;
}
+extern void dccp_syn_ack_timeout(struct sock *sk, struct request_sock *req);
+
#endif /* __KERNEL__ */
#endif /* _LINUX_DCCP_H */
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)
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index c12396f2785f..d19f32aca6ca 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -555,8 +555,7 @@ void inet_csk_reqsk_queue_prune(struct sock *parent,
syn_ack_recalc(req, thresh, max_retries,
queue->rskq_defer_accept,
&expire, &resend);
- if (req->rsk_ops->syn_ack_timeout)
- req->rsk_ops->syn_ack_timeout(parent, req);
+ req->rsk_ops->syn_ack_timeout(parent, req);
if (!expire &&
(!resend ||
!req->rsk_ops->rtx_syn_ack(parent, req, NULL) ||