net: bridge: mcast: add support for group source list

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Initial functions for group source lists which are needed for IGMPv3
and MLDv2 include/exclude lists. Both IPv4 and IPv6 sources are supported.
User-added mdb entries are created with exclude filter mode, we can
extend that later to allow user-supplied mode. When group src entries
are deleted, they're freed from a workqueue to make sure their timers
are not still running. Source entries are protected by the multicast_lock
and rcu. The number of src groups per port group is limited to 32.

v4: use the new port group del function directly
    add igmpv2/mldv1 bool to denote if the entry was added in those
    modes, it will later replace the old update_timer bool
v3: add IPv6 support
v2: allow src groups to be traversed under rcu

Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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This commit is contained in:

Nikolay Aleksandrov 2020-09-07 12:56:07 +03:00 • committed by Jakub Kicinski

parent 681590bd4c

commit 8b671779b7

3 changed files with 179 additions and 14 deletions

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3

net/bridge/br_mdb.c

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164

net/bridge/br_multicast.c

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26

net/bridge/br_private.h

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