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author | Stanislav Fomichev <sdf@google.com> | 2019-04-26 00:37:24 +0300 |
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committer | Daniel Borkmann <daniel@iogearbox.net> | 2019-04-26 00:49:06 +0300 |
commit | 7f0c57fec80f198ae9fcd06e5bbca13196815a4b (patch) | |
tree | 85308388727bfaabda0dc9487b2c036b02284a96 /drivers/watchdog/mena21_wdt.c | |
parent | 118c8e9ae629d35fa9b3d27a7b9d59298b1b4183 (diff) | |
download | linux-7f0c57fec80f198ae9fcd06e5bbca13196815a4b.tar.xz |
bpftool: show flow_dissector attachment status
Right now there is no way to query whether BPF flow_dissector program
is attached to a network namespace or not. In previous commit, I added
support for querying that info, show it when doing `bpftool net`:
$ bpftool prog loadall ./bpf_flow.o \
/sys/fs/bpf/flow type flow_dissector \
pinmaps /sys/fs/bpf/flow
$ bpftool prog
3: flow_dissector name _dissect tag 8c9e917b513dd5cc gpl
loaded_at 2019-04-23T16:14:48-0700 uid 0
xlated 656B jited 461B memlock 4096B map_ids 1,2
btf_id 1
...
$ bpftool net -j
[{"xdp":[],"tc":[],"flow_dissector":[]}]
$ bpftool prog attach pinned \
/sys/fs/bpf/flow/flow_dissector flow_dissector
$ bpftool net -j
[{"xdp":[],"tc":[],"flow_dissector":["id":3]}]
Doesn't show up in a different net namespace:
$ ip netns add test
$ ip netns exec test bpftool net -j
[{"xdp":[],"tc":[],"flow_dissector":[]}]
Non-json output:
$ bpftool net
xdp:
tc:
flow_dissector:
id 3
v2:
* initialization order (Jakub Kicinski)
* clear errno for batch mode (Quentin Monnet)
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'drivers/watchdog/mena21_wdt.c')
0 files changed, 0 insertions, 0 deletions