Prev: linux-next: tip tree build warning
Next: netperf ~50% regression with 2.6.33-rc1, bisect to 1b9508f
From: Amerigo Wang on 1 Feb 2010 03:00

Currently, we can only get TCP send buffer size by
getsockopt (SO_SNDBUF or TCP_INFO), this is not enough
for the tools like netstat or ss to read.

Show TCP send buffer size via netlink NETLINK_INET_DIAG.

Signed-off-by: WANG Cong <amwang(a)redhat.com>
Cc: David Miller <davem(a)davemloft.net>

---
diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 7fee8a4..46768de 100644
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -136,6 +136,7 @@ struct tcp_info {
__u32 tcpi_ato;
__u32 tcpi_snd_mss;
__u32 tcpi_rcv_mss;
+ __u32 tcpi_sndbuf;

__u32 tcpi_unacked;
__u32 tcpi_sacked;
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index b0a26bb..b3d6a62 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2385,6 +2385,7 @@ void tcp_get_info(struct sock *sk, struct tcp_info *info)
info->tcpi_retransmits = icsk->icsk_retransmits;
info->tcpi_probes = icsk->icsk_probes_out;
info->tcpi_backoff = icsk->icsk_backoff;
+ info->tcpi_sndbuf = sk->sk_sndbuf;

if (tp->rx_opt.tstamp_ok)
info->tcpi_options |= TCPI_OPT_TIMESTAMPS;
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
 | 
Pages: 1
Prev: linux-next: tip tree build warning
Next: netperf ~50% regression with 2.6.33-rc1, bisect to 1b9508f