tcp/dccp: constify rtx_synack() and friends
This is done to make sure we do not change listener socket
while sending SYNACK packets while socket lock is not held.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/request_sock.h b/include/net/request_sock.h
index 87935ca..ff7ce1e 100644
--- a/include/net/request_sock.h
+++ b/include/net/request_sock.h
@@ -32,7 +32,7 @@
int obj_size;
struct kmem_cache *slab;
char *slab_name;
- int (*rtx_syn_ack)(struct sock *sk,
+ int (*rtx_syn_ack)(const struct sock *sk,
struct request_sock *req);
void (*send_ack)(struct sock *sk, struct sk_buff *skb,
struct request_sock *req);
diff --git a/include/net/tcp.h b/include/net/tcp.h
index 868c535..6630ab1 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1676,7 +1676,7 @@
void tcp4_proc_exit(void);
#endif
-int tcp_rtx_synack(struct sock *sk, struct request_sock *req);
+int tcp_rtx_synack(const struct sock *sk, struct request_sock *req);
int tcp_conn_request(struct request_sock_ops *rsk_ops,
const struct tcp_request_sock_ops *af_ops,
struct sock *sk, struct sk_buff *skb);