inet: constify inet_csk_route_req() socket argument

edumazet · davem330 · commit e5895bc600cc · 2015-09-25T13:00:37.000-07:00
This is used by TCP listener core, and listener socket shall
not be modified by inet_csk_route_req().

Signed-off-by: Eric Dumazet &lt;edumazet@google.com&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
@@ -266,7 +266,7 @@ int inet_csk_bind_conflict(const struct sock *sk,
 			   const struct inet_bind_bucket *tb, bool relax);
 int inet_csk_get_port(struct sock *sk, unsigned short snum);
 
-struct dst_entry *inet_csk_route_req(struct sock *sk, struct flowi4 *fl4,
+struct dst_entry *inet_csk_route_req(const struct sock *sk, struct flowi4 *fl4,
 				     const struct request_sock *req);
 struct dst_entry *inet_csk_route_child_sock(struct sock *sk, struct sock *newsk,
 					    const struct request_sock *req);
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
@@ -408,7 +408,7 @@ void inet_csk_reset_keepalive_timer(struct sock *sk, unsigned long len)
 }
 EXPORT_SYMBOL(inet_csk_reset_keepalive_timer);
 
-struct dst_entry *inet_csk_route_req(struct sock *sk,
+struct dst_entry *inet_csk_route_req(const struct sock *sk,
 				     struct flowi4 *fl4,
 				     const struct request_sock *req)
 {

Original file line number	Diff line number	Diff line change
`@@ -408,7 +408,7 @@ void inet_csk_reset_keepalive_timer(struct sock *sk, unsigned long len)`
`408`	`408`	`}`
`409`	`409`	`EXPORT_SYMBOL(inet_csk_reset_keepalive_timer);`
`410`	`410`
`411`		`-struct dst_entry inet_csk_route_req(struct sock sk,`
	`411`	`+struct dst_entry inet_csk_route_req(const struct sock sk,`
`412`	`412`	`struct flowi4 *fl4,`
`413`	`413`	`const struct request_sock *req)`
`414`	`414`	`{`