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| author | Sridhar Samudrala <sri@us.ibm.com> | 2006-06-27 13:29:00 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-06-29 16:57:57 -0700 |
| commit | 47da8ee681d04e68ca1b1812c10e28162150d453 (patch) | |
| tree | 05b9abc2438abe0e9ecef1b6632a9b114e6cb55b /net/ipv4/tcp_diag.c | |
| parent | c7bdb545d23026b18be53289fd866d1ac07f5f8c (diff) | |
| download | blackbird-op-linux-47da8ee681d04e68ca1b1812c10e28162150d453.tar.gz blackbird-op-linux-47da8ee681d04e68ca1b1812c10e28162150d453.zip | |
[TCP]: Export accept queue len of a TCP listening socket via rx_queue
While debugging a TCP server hang issue, we noticed that currently there is
no way for a user to get the acceptq backlog value for a TCP listen socket.
All the standard networking utilities that display socket info like netstat,
ss and /proc/net/tcp have 2 fields called rx_queue and tx_queue. These
fields do not mean much for listening sockets. This patch uses one of these
unused fields(rx_queue) to export the accept queue len for listening sockets.
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_diag.c')
| -rw-r--r-- | net/ipv4/tcp_diag.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/net/ipv4/tcp_diag.c b/net/ipv4/tcp_diag.c index c148c1081880..b56399c7cc12 100644 --- a/net/ipv4/tcp_diag.c +++ b/net/ipv4/tcp_diag.c @@ -26,7 +26,10 @@ 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; - r->idiag_rqueue = tp->rcv_nxt - tp->copied_seq; + if (sk->sk_state == TCP_LISTEN) + r->idiag_rqueue = sk->sk_ack_backlog; + else + r->idiag_rqueue = tp->rcv_nxt - tp->copied_seq; r->idiag_wqueue = tp->write_seq - tp->snd_una; if (info != NULL) tcp_get_info(sk, info); |
