https://github.com/shemminger/iproute2/commit/38d209ecf2ae966b9b25de4acb60cdffb0e06ced
This commit looks like a fix for this issue:
ss: Review ssfilter
The original problem was ssfilter rejecting single expressions if
enclosed in braces, such as:
| sport = 22 or ( dport = 22 )
This is fixed by allowing 'expr' to be an 'exprlist' enclosed in braces.
The no longer required recursion in 'exprlist' being an 'exprlist'
enclosed in braces is dropped.
In addition to that, a few other things are changed:
* Remove pointless 'null' prefix in 'appled' before 'exprlist'.
* For simple equals matches, '=' operator was required for ports but not
allowed for hosts. Make this consistent by making '=' operator
optional in both cases.
Reported-by: Samuel Mannehed <sam...@cendio.se>
Fixes: b2038cc ("ssfilter: Eliminate shift/reduce conflicts")
Signed-off-by: Phil Sutter <p...@nwl.cc>
Signed-off-by: Stephen Hemminger <step...@networkplumber.org>
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https://bugs.launchpad.net/bugs/1831775
Title:
ss seems broken when using multiple filters in the same cmdline
Status in iproute2 package in Ubuntu:
In Progress
Bug description:
Investigating an issue for CTDB (LP: #722201), after suggesting a fix
on ss syntax to CTDB upstream project, we discovered that "ss" seems
to be broken in Ubuntu since Ubuntu Cosmic:
----
# Debian Sid
inaddy@workstation:~$ ss -tn state established "( src [172.16.17.2] || src
[172.16.17.3] )" "( sport == :2049 )"
Recv-Q Send-Q Local Address:Port
Peer Address:Port
# Ubuntu Ubuntu 16.04 LTS (Xenial Xerus)
(c)inaddy@xenial:~$ ss -tn state established "( src [172.16.17.2] || src
[172.16.17.3] )" "( sport == :2049 )"
Recv-Q Send-Q Local Address:Port
Peer Address:Port
# Ubuntu 18.04 LTS (Bionic Beaver)
(c)inaddy@bionic:~$ ss -tn state established "( src [172.16.17.2] || src
[172.16.17.3] )" "( sport == :2049 )"
Recv-Q Send-Q Local Address:Port
Peer Address:Port
# Ubuntu 18.10 (Cosmic Cuttlefish)
(c)inaddy@cosmic:~$ ss -tn state established "( src [172.16.17.2] || src
[172.16.17.3] )" "( sport == :2049 )"
ss: bison bellows (while parsing filter): "syntax error!" Sorry.
Usage: ss [ OPTIONS ]
ss [ OPTIONS ] [ FILTER ]
-h, --help this message
# Ubuntu 19.04 (Disco Dingo)
(c)inaddy@disco:~$ ss -tn state established "( src [172.16.17.2] || src
[172.16.17.3] )" "( sport == :2049 )"
ss: bison bellows (while parsing filter): "syntax error!" Sorry.
Usage: ss [ OPTIONS ]
ss [ OPTIONS ] [ FILTER ]
# Ubuntu 19.10 (Eoan Ermine)
(c)inaddy@eoan:~$ ss -tn state established "( src [172.16.17.2] || src
[172.16.17.3] )" "( sport == :2049 )"
ss: bison bellows (while parsing filter): "syntax error!" Sorry.
Usage: ss [ OPTIONS ]
ss [ OPTIONS ] [ FILTER ]
----
I have generated a pkg using upstream iproute2 source code and it does
not suffer the issue. I have generated a package using Ubuntu cosmic
source package, without debian/patches/*, and verified the issue still
persists (not being introduced by any of our packages, and being
present if vanilla upstream version used in Cosmic).
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