tcp: constify listener socket in tcp_v[46]_init_req()

Soon, listener socket spinlock will no longer be held,
add const arguments to tcp_v[46]_init_req() to make clear these
functions can not mess socket fields.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/include/net/tcp.h b/include/net/tcp.h
index 5cf9672c13e2..c006255a0df1 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -1705,7 +1705,8 @@ struct tcp_request_sock_ops {
                                           const struct sock *sk,
                                           const struct sk_buff *skb);
 #endif
-        void (*init_req)(struct request_sock *req, struct sock *sk,
+        void (*init_req)(struct request_sock *req,
+                         const struct sock *sk_listener,
                          struct sk_buff *skb);
 #ifdef CONFIG_SYN_COOKIES
         __u32 (*cookie_init_seq)(struct sock *sk, const struct sk_buff *skb,