Teach ss to show sockets' shutdown state
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- v1 Latest5 patches 6 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/5 | ss: Rename some tcp- names into inet-misc/ | +12 | 0 replies | |
| 2/5 | ss: Split inet_show_netlink into partsmisc/ | +21 | 0 replies | |
| 3/5 | ss: Support sock-diagmisc/ | +87 | 0 replies | |
| 4/5 | ss: Get udp sockets info via sock-diagmisc/ | +7 | 1 reply | |
| 5/5 | ss: Show inet and unix sockets' shutdown stateinclude/ include/ misc/ | +23 | 5 replies |
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Cover letter [PATCH iproute2 0/5] Teach ss to show sockets' shutdown state
In the net-next sits a patch which extends the sock-diag subsys to show the sockets' shutdown state. I propose to teach the ss tool to print this info when requested with -e|--extended key.
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.
In order to do so, it's also required to implement support for the newer sock-diag in tcp and udp netlink code. I did it before, but broke compatibility with older kernels (those without sock-diag). Now this is fixed (checked on 2.6.40 kernel).
Signed-off-by Pavel Emelyanov <[email protected]>