Commit 690b11f4a6 ("tc: u32: Fix firstfrag filter.") applied in 2012
changed the "ip firstfrag" selector to not match non-fragmented packets
anymore.
However, the documentation added in f15a23966f ("tc: add a man page
for u32 filter") in 2015 includes an example that relies on the previous
behavior (non-fragmented packet counted as first fragment).
Due to this, the example does not work correctly and does not actually
classify regular SSH packets.
Modify the example to use a raw u16 selector on the fragment offset to
make it work, and also make the firstfrag description more clear about
the current behavior.
Fixes: f15a23966f ("tc: add a man page for u32 filter")
Signed-off-by: Anssi Hannula <anssi.hannula@bitwise.fi>
Cc: Phil Sutter <phil@nwl.cc>
Cc: Hiroaki SHIMODA <shimoda.hiroaki@gmail.com>
Acked-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Lintian detected the following formatting errors:
man/man8/devlink-sb.8.gz 230: warning: macro `b' not defined
man/man8/ip-link.8.gz 1243: warning: macro `in-8' not defined
(possibly missing space after `in')
man/man8/tc-u32.8.gz `R' is a string (producing the registered sign),
not a macro.
Signed-off-by: Luca Boccassi <bluca@debian.org>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Anssi Hannula
Luca Boccassi
Bjarni Ingi Gislason
Roman Mashak
Phil Sutter