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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 | |
| parent | c7bdb545d23026b18be53289fd866d1ac07f5f8c (diff) | |
| download | linux-47da8ee681d04e68ca1b1812c10e28162150d453.tar.gz linux-47da8ee681d04e68ca1b1812c10e28162150d453.tar.bz2 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>
| -rw-r--r-- | net/ipv4/tcp_diag.c | 5 | ||||
| -rw-r--r-- | net/ipv4/tcp_ipv4.c | 3 | ||||
| -rw-r--r-- | net/ipv6/tcp_ipv6.c | 3 |
3 files changed, 8 insertions, 3 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); diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 25ecc6e2478b..4c6ef47eb1c3 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -1726,7 +1726,8 @@ static void get_tcp4_sock(struct sock *sp, char *tmpbuf, int i) sprintf(tmpbuf, "%4d: %08X:%04X %08X:%04X %02X %08X:%08X %02X:%08lX " "%08X %5d %8d %lu %d %p %u %u %u %u %d", i, src, srcp, dest, destp, sp->sk_state, - tp->write_seq - tp->snd_una, tp->rcv_nxt - tp->copied_seq, + tp->write_seq - tp->snd_una, + (sp->sk_state == TCP_LISTEN) ? sp->sk_ack_backlog : (tp->rcv_nxt - tp->copied_seq), timer_active, jiffies_to_clock_t(timer_expires - jiffies), icsk->icsk_retransmits, diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c index a50eb306e9e2..b36d5b2e7c30 100644 --- a/net/ipv6/tcp_ipv6.c +++ b/net/ipv6/tcp_ipv6.c @@ -1469,7 +1469,8 @@ static void get_tcp6_sock(struct seq_file *seq, struct sock *sp, int i) dest->s6_addr32[0], dest->s6_addr32[1], dest->s6_addr32[2], dest->s6_addr32[3], destp, sp->sk_state, - tp->write_seq-tp->snd_una, tp->rcv_nxt-tp->copied_seq, + tp->write_seq-tp->snd_una, + (sp->sk_state == TCP_LISTEN) ? sp->sk_ack_backlog : (tp->rcv_nxt - tp->copied_seq), timer_active, jiffies_to_clock_t(timer_expires - jiffies), icsk->icsk_retransmits, |