Re: [PATCH 5/5] ss: Show inet and unix sockets' shutdown state

On Thu, 25 Oct 2012 18:53:30 +0200
Eric Dumazet [off-list ref] wrote:

On Thu, 2012-10-25 at 08:52 -0700, Stephen Hemminger wrote:

quoted

On Thu, 25 Oct 2012 17:26:44 +0400
Pavel Emelyanov [off-list ref] wrote:

quoted

To see this we need kernel >=3.7 with _SHUTDOWN nlarrts in diag messages.
The output will look like arrows at the end of each line, like this:

ESTAB 0 0  127.0.0.1:41705  127.0.0.1:12345  ino:143321 sk:ffff88003a8cea00 -->
ESTAB 0 0  127.0.0.1:46925  127.0.0.1:12346  ino:143322 sk:ffff88003a8ce4c0 <--
ESTAB 0 0  127.0.0.1:51678  127.0.0.1:12347  ino:143323 sk:ffff88003a8cdf80 ---
ESTAB 0 0  127.0.0.1:46911  127.0.0.1:12348  ino:143324 sk:ffff88003b7f05c0 <->

for SHUT_RD, SHUT_WR, SHUT_RDWR and non-shutdown sockets respectively.

Signed-off-by: Pavel Emelyanov <redacted>

---
 include/linux/inet_diag.h |    3 ++-
 include/linux/unix_diag.h |    1 +
 misc/ss.c                 |   26 ++++++++++++++++++++------
 3 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/include/linux/inet_diag.h b/include/linux/inet_diag.h
index 8c469af..bbde90f 100644
--- a/include/linux/inet_diag.h
+++ b/include/linux/inet_diag.h

@@ -109,9 +109,10 @@ enum {
 	INET_DIAG_TOS,
 	INET_DIAG_TCLASS,
 	INET_DIAG_SKMEMINFO,
+	INET_DIAG_SHUTDOWN,
 };

Since this requires 3.8 or later kernel, please resubmit this
patch during that merge window.
--

I am wondering what possibly could happen if applying this before ?

iproute2 should be non dependent on kernel version, we make sure to not
add regressions.

I don't want the stashed kernel headers to get out of date with kernel exported ones.

People who want to test early features are free to build their own pre-release versions.