diff options
| author | Petr Machata <petrm@mellanox.com> | 2020-01-06 18:01:56 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-12 12:12:08 +0100 |
| commit | a56f6034450677945452a72800dc84354959026e (patch) | |
| tree | abec8180f02b41c77f7ea348274f720ca6fa942c /net/8021q | |
| parent | 841d685ca1154db46d409883a48d15409819a838 (diff) | |
net: sch_prio: When ungrafting, replace with FIFO
[ Upstream commit 240ce7f6428ff5188b9eedc066e1e4d645b8635f ]
When a child Qdisc is removed from one of the PRIO Qdisc's bands, it is
replaced unconditionally by a NOOP qdisc. As a result, any traffic hitting
that band gets dropped. That is incorrect--no Qdisc was explicitly added
when PRIO was created, and after removal, none should have to be added
either.
Fix PRIO by first attempting to create a default Qdisc and only falling
back to noop when that fails. This pattern of attempting to create an
invisible FIFO, using NOOP only as a fallback, is also seen in other
Qdiscs.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/8021q')
0 files changed, 0 insertions, 0 deletions