Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.kernel > #78438 > unrolled thread

Bug#1032561: iproute2: "tc filter show" always results in empty response

Back to article view | Back to linux.debian.kernel

Contents

  Bug#1032561: iproute2: "tc filter show" always results in empty response Simon <simon@sarthur.dev> - 2023-03-08 22:40 +0100
    Bug#1032561: iproute2: "tc filter show" always results in empty response Simon Arthur <simon@sarthur.dev> - 2023-03-09 13:50 +0100

#78438 — Bug#1032561: iproute2: "tc filter show" always results in empty response

Package: iproute2
Version: 6.1.0-2
Severity: normal
X-Debbugs-Cc: simon@sarthur.dev

Dear Maintainer,

While testing CAKE traffic shaping, I could not see records or statistics for applied tc filters.
Filters do seem to be present and having an effect, but "tc filter show" always returns no output.

root@debian12:~# tc filter add dev eth2 parent ffff: matchall action mirred egress redirect dev ifb4eth2
root@debian12:~# tc filter
root@debian12:~# tc filter show
root@debian12:~# 

Tested on fresh Bookworm install and several other machines running various 6.1 based kernels with same result.

-- System Information:
Debian Release: bookworm/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 6.1.0-5-amd64 (SMP w/1 CPU thread; PREEMPT)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages iproute2 depends on:
ii  debconf [debconf-2.0]  1.5.82
ii  libbpf1                1:1.1.0-1
ii  libbsd0                0.11.7-2
ii  libc6                  2.36-8
ii  libcap2                1:2.66-3
ii  libcap2-bin            1:2.66-3
ii  libdb5.3               5.3.28+dfsg2-1
ii  libelf1                0.188-2.1
ii  libmnl0                1.0.4-3
ii  libselinux1            3.4-1+b5
ii  libtirpc3              1.3.3+ds-1
ii  libxtables12           1.8.9-2

Versions of packages iproute2 recommends:
pn  libatm1  <none>

Versions of packages iproute2 suggests:
pn  iproute2-doc  <none>
ii  python3       3.11.2-1

-- debconf information:
  iproute2/setcaps: false

[toc] | [next] | [standalone]

#78440

[Multipart message — attachments visible in raw view] — view raw

I have found that more specific arguments does return output:
root@debian12:~# tc filter show
root@debian12:~# tc filter show dev eth2 root
filter parent ffff: protocol all pref 49152 matchall chain 0
filter parent ffff: protocol all pref 49152 matchall chain 0 handle 0x1
  not_in_hw
        action order 1: mirred (Egress Redirect to device ifb4eth2) stolen
        index 2 ref 1 bind 1

However like "tc qdisc show" you would expect "tc filter show" to also
result in all filter rules across interfaces being returned.

[toc] | [prev] | [standalone]

Back to top | Article view | linux.debian.kernel

csiph-web