linux-stable/include/uapi
Nikolay Aleksandrov f333a5ca71 net: bridge: fix flags interpretation for extern learn fdb entries
[ Upstream commit 45a687879b ]

Ignore fdb flags when adding port extern learn entries and always set
BR_FDB_LOCAL flag when adding bridge extern learn entries. This is
closest to the behaviour we had before and avoids breaking any use cases
which were allowed.

This patch fixes iproute2 calls which assume NUD_PERMANENT and were
allowed before, example:
$ bridge fdb add 00:11:22:33:44:55 dev swp1 extern_learn

Extern learn entries are allowed to roam, but do not expire, so static
or dynamic flags make no sense for them.

Also add a comment for future reference.

Fixes: eb100e0e24 ("net: bridge: allow to add externally learned entries from user-space")
Fixes: 0541a62932 ("net: bridge: validate the NUD_PERMANENT bit when adding an extern_learn FDB entry")
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20210810110010.43859-1-razor@blackwall.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-08-18 08:59:13 +02:00
..
asm-generic mm/madvise: introduce process_madvise() syscall: an external memory hinting API 2020-10-18 09:27:10 -07:00
drm drm/fourcc: fix Amlogic format modifier masks 2021-03-04 11:37:38 +01:00
linux net: bridge: fix flags interpretation for extern learn fdb entries 2021-08-18 08:59:13 +02:00
misc habanalabs: Add an option to map CB to device MMU 2020-09-22 18:49:54 +03:00
mtd MTD: mtd-abi.h: drop a duplicated word 2020-08-02 23:00:10 +02:00
rdma RDMA/vmw_pvrdma: Fix network_hdr_type reported in WC 2021-01-30 13:55:18 +01:00
scsi
sound ALSA: fix kernel-doc markups 2020-10-26 15:26:31 +01:00
video
xen xen/gntdev: gntdev.h: drop a duplicated word 2020-08-03 07:46:42 +02:00
Kbuild