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17 May 2024, 11:00:25 UTC
Revision 2f806c2a16b37ed6f90e4d9c1b14e97bb24ab0c2 authored by David S. Miller on 08 January 2020, 20:45:53 UTC, committed by David S. Miller on 08 January 2020, 20:45:53 UTC 
Merge branch 'net-ungraft-prio'
 
Petr Machata says:

====================
When ungrafting from PRIO, replace child with FIFO

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.

In patch #2, this problem is fixed for 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 some other Qdiscs.

The only driver currently offloading PRIO (and thus presumably the only one
impacted by this) is mlxsw. Therefore patch #1 extends mlxsw to handle the
replacement by an invisible FIFO gracefully.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 parent s cb6f74a + 240ce7f
History
Tip revision: 2f806c2a16b37ed6f90e4d9c1b14e97bb24ab0c2 authored by David S. Miller on 08 January 2020, 20:45:53 UTC
Merge branch 'net-ungraft-prio'
Tip revision: 2f806c2
File Mode Size
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arch
block
certs
crypto
drivers
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.clang-format -rw-r--r-- 15.0 KB
.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 71 bytes
.gitattributes -rw-r--r-- 62 bytes
.gitignore -rw-r--r-- 1.7 KB
.mailmap -rw-r--r-- 14.1 KB
COPYING -rw-r--r-- 423 bytes
CREDITS -rw-r--r-- 97.3 KB
Kbuild -rw-r--r-- 1.3 KB
Kconfig -rw-r--r-- 595 bytes
MAINTAINERS -rw-r--r-- 526.7 KB
Makefile -rw-r--r-- 59.4 KB
README -rw-r--r-- 727 bytes

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