linux

mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-18 19:12:56 +00:00

No description

C 96.9%
Assembly 0.9%
Rust 0.6%
Shell 0.6%
Python 0.5%
Other 0.3%

Find a file

Yong Wang 410a033bfa net: bridge: mcast: re-implement br_multicast_{enable, disable}_port functions [ Upstream commit `4b30ae9adb` ] When a bridge port STP state is changed from BLOCKING/DISABLED to FORWARDING, the port's igmp query timer will NOT re-arm itself if the bridge has been configured as per-VLAN multicast snooping. Solve this by choosing the correct multicast context(s) to enable/disable port multicast based on whether per-VLAN multicast snooping is enabled or not, i.e. using per-{port, VLAN} context in case of per-VLAN multicast snooping by re-implementing br_multicast_enable_port() and br_multicast_disable_port() functions. Before the patch, the IGMP query does not happen in the last step of the following test sequence, i.e. no growth for tx counter: # ip link add name br1 up type bridge vlan_filtering 1 mcast_snooping 1 mcast_vlan_snooping 1 mcast_querier 1 mcast_stats_enabled 1 # bridge vlan global set vid 1 dev br1 mcast_snooping 1 mcast_querier 1 mcast_query_interval 100 mcast_startup_query_count 0 # ip link add name swp1 up master br1 type dummy # bridge link set dev swp1 state 0 # ip -j -p stats show dev swp1 group xstats_slave subgroup bridge suite mcast \| jq '.[]["multicast"]["igmp_queries"]["tx_v2"]' 1 # sleep 1 # ip -j -p stats show dev swp1 group xstats_slave subgroup bridge suite mcast \| jq '.[]["multicast"]["igmp_queries"]["tx_v2"]' 1 # bridge link set dev swp1 state 3 # sleep 2 # ip -j -p stats show dev swp1 group xstats_slave subgroup bridge suite mcast \| jq '.[]["multicast"]["igmp_queries"]["tx_v2"]' 1 After the patch, the IGMP query happens in the last step of the test: # ip link add name br1 up type bridge vlan_filtering 1 mcast_snooping 1 mcast_vlan_snooping 1 mcast_querier 1 mcast_stats_enabled 1 # bridge vlan global set vid 1 dev br1 mcast_snooping 1 mcast_querier 1 mcast_query_interval 100 mcast_startup_query_count 0 # ip link add name swp1 up master br1 type dummy # bridge link set dev swp1 state 0 # ip -j -p stats show dev swp1 group xstats_slave subgroup bridge suite mcast \| jq '.[]["multicast"]["igmp_queries"]["tx_v2"]' 1 # sleep 1 # ip -j -p stats show dev swp1 group xstats_slave subgroup bridge suite mcast \| jq '.[]["multicast"]["igmp_queries"]["tx_v2"]' 1 # bridge link set dev swp1 state 3 # sleep 2 # ip -j -p stats show dev swp1 group xstats_slave subgroup bridge suite mcast \| jq '.[]["multicast"]["igmp_queries"]["tx_v2"]' 3 Signed-off-by: Yong Wang <yongwang@nvidia.com> Reviewed-by: Andy Roulin <aroulin@nvidia.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Acked-by: Nikolay Aleksandrov <razor@blackwall.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2025-06-27 11:05:32 +01:00
arch
block
certs
crypto
Documentation
drivers
fs
include
init
io_uring
ipc
kernel
lib
LICENSES
mm
net
samples
scripts
security
sound
tools
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile
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.