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Filename Latest commit message Latest commit date
Boris Sukholitko 9cc3eb8abe net/sched: act_vlan: Fix modify to allow 0 
[ Upstream commit 9c5eee0afca09cbde6bd00f77876754aaa552970 ]

Currently vlan modification action checks existence of vlan priority by
comparing it to 0. Therefore it is impossible to modify existing vlan
tag to have priority 0.

For example, the following tc command will change the vlan id but will
not affect vlan priority:

tc filter add dev eth1 ingress matchall action vlan modify id 300 \
        priority 0 pipe mirred egress redirect dev eth2

The incoming packet on eth1:

ethertype 802.1Q (0x8100), vlan 200, p 4, ethertype IPv4

will be changed to:

ethertype 802.1Q (0x8100), vlan 300, p 4, ethertype IPv4

although the user has intended to have p == 0.

The fix is to add tcfv_push_prio_exists flag to struct tcf_vlan_params
and rely on it when deciding to set the priority.

Fixes: 45a497f2d1 (net/sched: act_vlan: Introduce TCA_VLAN_ACT_MODIFY vlan action)
Signed-off-by: Boris Sukholitko <boris.sukholitko@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-07-14 16:53:27 +02:00
arch KVM: nVMX: Ensure 64-bit shift when checking VMFUNC bitmap 2021-07-14 16:53:23 +02:00
block blk-wbt: make sure throttle is enabled properly 2021-07-14 16:53:25 +02:00
certs
crypto
Documentation clocksource: Retry clock read if long delays detected 2021-07-14 16:53:18 +02:00
drivers ehea: fix error return code in ehea_restart_qps() 2021-07-14 16:53:27 +02:00
fs dax: fix ENOMEM handling in grab_mapping_entry() 2021-07-14 16:53:25 +02:00
include net/sched: act_vlan: Fix modify to allow 0 2021-07-14 16:53:27 +02:00
init
ipc
kernel sched/uclamp: Fix uclamp_tg_restrict() 2021-07-14 16:53:24 +02:00
lib lib: vsprintf: Fix handling of number field widths in vsscanf 2021-07-14 16:53:16 +02:00
LICENSES
mm
net net/sched: act_vlan: Fix modify to allow 0 2021-07-14 16:53:27 +02:00
samples
scripts kbuild: Fix objtool dependency for 'OBJECT_FILES_NON_STANDARD_<obj> := n' 2021-07-14 16:53:20 +02:00
security evm: fix writing <securityfs>/evm overflow 2021-07-14 16:53:21 +02:00
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README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.