Re: [PATCH] include listenq max backlog in /proc/net/tcp and include in tcp_info

[Eric Dumazet]

Sridhar Samudrala a écrit :

On Mon, 2007-09-10 at 16:13 -0700, Rick Jones wrote:

Return some useful information such as the maximum listen backlog and

the current listen backlog in the tcp_info structure and have that match what one can see in /proc/net/tcp and /proc/net/tcp6.

If we are also exporting max listen backlog, another place to
consider adding this is to tcp_diag_get_info() called via INET_DIAG_INFO.
Current listen backlog is returned in inet_diag_msg->idiag_rqueue.
max listen backlog can be returned in inet_diag_msg->idiag_wqueue.

I agree, /proc/net/tcp is deprecated nowadays...

Rick, could you add this part in your patch, and add my Sign-off-by ?

Thank you
Eric




diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c
index 57c5f0b..f5b6275 100644
--- a/net/ipv4/tcp_diag.c
+++ b/net/ipv4/tcp_diag.c
@@ -25,11 +25,13 @@ static void tcp_diag_get_info(struct sock *sk, struct 
inet_diag_msg *r,
        const struct tcp_sock *tp = tcp_sk(sk);
        struct tcp_info *info = _info;
 
-       if (sk->sk_state == TCP_LISTEN)
+       if (sk->sk_state == TCP_LISTEN) {
                r->idiag_rqueue = sk->sk_ack_backlog;
-       else
+               r->idiag_wqueue = sk->sk_max_ack_backlog;
+       else {
                r->idiag_rqueue = tp->rcv_nxt - tp->copied_seq;
-       r->idiag_wqueue = tp->write_seq - tp->snd_una;
+               r->idiag_wqueue = tp->write_seq - tp->snd_una;
+       }
        if (info != NULL)
                tcp_get_info(sk, info);
 }