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authorNikolay Aleksandrov <nikolay@cumulusnetworks.com>2019-11-04 11:36:51 +0200
committerDavid S. Miller <davem@davemloft.net>2019-11-04 11:15:27 -0800
commit5d1fcaf35d74b4188d238e46f0be37c14a01f169 (patch)
tree55b357200a6a8666ee62f738ebb7508e1771d7cd /drivers/net/dsa
parentMerge tag 'mlx5-updates-2019-11-01' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux (diff)
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net: bridge: fdb: eliminate extra port state tests from fast-path
When commit df1c0b8468b3 ("[BRIDGE]: Packets leaking out of disabled/blocked ports.") introduced the port state tests in br_fdb_update() it was to avoid learning/refreshing from STP BPDUs, it was also used to avoid learning/refreshing from user-space with NTF_USE. Those two tests are done for every packet entering the bridge if it's learning, but for the fast-path we already have them checked in br_handle_frame() and is unnecessary to do it again. Thus push the checks to the unlikely cases and drop them from br_fdb_update(), the new nbp_state_should_learn() helper is used to determine if the port state allows br_fdb_update() to be called. The two places which need to do it manually are: - user-space add call with NTF_USE set - link-local packet learning done in __br_handle_local_finish() Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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