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| author |   Al Viro <viro@zeniv.linux.org.uk> | 2018-10-08 06:22:34 -0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-10-08 10:33:34 -0700 |
| commit | 27594ec4b6a7035450ba43624d1648cbd2c0aaea (patch) | |
| tree | da8a30c41f7825aa2defb535390bd33911ad5de7 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | net: sched: cls_u32: mark root hnode explicitly (diff) | |
| download | wireguard-linux-27594ec4b6a7035450ba43624d1648cbd2c0aaea.tar.xz wireguard-linux-27594ec4b6a7035450ba43624d1648cbd2c0aaea.zip | |
net: sched: cls_u32: disallow linking to root hnode
Operation makes no sense. Nothing will actually break if we do so
(depth limit in u32_classify() will prevent infinite loops), but
according to maintainers it's best prohibited outright.
NOTE: doing so guarantees that u32_destroy() will trigger the call
of u32_destroy_hnode(); we might want to make that unconditional.
Test:
tc qdisc add dev eth0 ingress
tc filter add dev eth0 parent ffff: protocol ip prio 100 u32 \
link 800: offset at 0 mask 0f00 shift 6 plus 0 eat match ip protocol 6 ff
should fail with
Error: cls_u32: Not linking to root node
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions