net: bridge: vlan: use an RCU array for large flood sets

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Walking the master VLAN's port-VLAN list avoids considering ports outside
the VLAN but its pointer chasing becomes more expensive than array when
many ports participate. Add an rcu array of port-VLAN pointers for larger
flood sets. Rebuild and publish the array under RTNL when VLAN membership
changes. Continue using the list for small flood sets and as a fallback
if the array allocation fails.

Signed-off-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260918152950.1938259-7-razor@blackwall.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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Nikolay Aleksandrov 2026-09-18 18:29:47 +03:00 • committed by Jakub Kicinski

parent d5219589e4

commit 9c30ccaa73

3 changed files with 79 additions and 10 deletions

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39

net/bridge/br_forward.c

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13

net/bridge/br_private.h

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37

net/bridge/br_vlan.c

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