netdev - Re: VLAN aware bridge multicast and quierer problems

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Message-ID: <0f752b89-bc4b-40cf-bd4d-ac4e7d3fab2d@lunn.ch>
Date: Wed, 13 Mar 2024 17:56:16 +0100
From: Andrew Lunn <andrew@...n.ch>
To: Nikolay Aleksandrov <razor@...ckwall.org>
Cc: Ido Schimmel <idosch@...dia.com>, netdev <netdev@...r.kernel.org>
Subject: Re: VLAN aware bridge multicast and quierer problems

> Hi Andrew,
> Please check again, br_multicast_rcv() which is called before
> br_multicast_querier_exists() should set brmctx and pmctx to
> the proper vlan contexts. If vlan igmp snooping is enabled then
> the call to br_multicast_querier_exists() is done with the vlan's
> contexts. I'd guess per-vlan igmp snooping is not enabled (it is not
> enabled by default).

So i have the test running, and i see:

# bridge vlan global show
port              vlan-id  
brtest0           1
                    mcast_snooping 1 mcast_querier 0 mcast_igmp_version 2 mcast_
mld_version 1 mcast_last_member_count 2 mcast_last_member_interval 100 mcast_sta
rtup_query_count 2 mcast_startup_query_interval 3125 mcast_membership_interval 2
6000 mcast_querier_interval 25500 mcast_query_interval 12500 mcast_query_respons
e_interval 1000 
                  100
                    mcast_snooping 1 mcast_querier 0 mcast_igmp_version 2 mcast_
mld_version 1 mcast_last_member_count 2 mcast_last_member_interval 100 mcast_sta
rtup_query_count 2 mcast_startup_query_interval 3125 mcast_membership_interval 2
6000 mcast_querier_interval 25500 mcast_query_interval 12500 mcast_query_respons
e_interval 1000 
                  200
                    mcast_snooping 1 mcast_querier 0 mcast_igmp_version 2 mcast_
mld_version 1 mcast_last_member_count 2 mcast_last_member_interval 100 mcast_sta
rtup_query_count 2 mcast_startup_query_interval 3125 mcast_membership_interval 2
6000 mcast_querier_interval 25500 mcast_query_interval 12500 mcast_query_respons
e_interval 1000 


The fact that 'mcast_snooping 1' indicates to me snooping is enabled
by default? The test case does not change any snooping configuration.

I will send you off list the test script.

  Andrew