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Subject[PATCH 001/001] net: Add tx_queue/rx_queue info to /proc/net/unix
From
From: Ryan Hajdaj <rhajdaj@gmail.com>

Add tx_queue/rx_queue info to /proc/net/unix (unix_seq_show)

Signed-off-by: Ryan Hajdaj <rhajdaj@gmail.com>
Tested-by: Ryan Hajdaj <rhajdaj@gmail.com>
---
tx_queue/rx_queue info is useful in systems with multiple processes
using Unix Domain sockets to communicate, as it can be used to check
process health "at a glance".
Unit tested on Unix stream and datagram sockets.
--- linux-3.3-rc1/net/unix/af_unix.c.orig 2012-01-28 20:36:33.000000000 +0000
+++ linux-3.3-rc1/net/unix/af_unix.c 2012-01-28 19:09:18.000000000 +0000
@@ -2286,13 +2286,14 @@ static int unix_seq_show(struct seq_file

if (v == SEQ_START_TOKEN)
seq_puts(seq, "Num RefCount Protocol Flags Type St "
- "Inode Path\n");
+ "tx_queue rx_queue Inode Path\n");
else {
struct sock *s = v;
struct unix_sock *u = unix_sk(s);
unix_state_lock(s);

- seq_printf(seq, "%pK: %08X %08X %08X %04X %02X %5lu",
+ seq_printf(seq,
+ "%pK: %08X %08X %08X %04X %02X %08lX %08lX %5lu",
s,
atomic_read(&s->sk_refcnt),
0,
@@ -2301,6 +2302,8 @@ static int unix_seq_show(struct seq_file
s->sk_socket ?
(s->sk_state == TCP_ESTABLISHED ? SS_CONNECTED : SS_UNCONNECTED) :
(s->sk_state == TCP_ESTABLISHED ? SS_CONNECTING : SS_DISCONNECTING),
+ unix_outq_len(s),
+ (unix_inq_len(s) < 0 ? 0 : unix_inq_len(s)),
sock_i_ino(s));

if (u->addr) {

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