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| author |   Nikolay Aleksandrov <nikolay@nvidia.com> | 2021-08-10 14:00:10 +0300 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2021-08-10 11:29:39 -0700 |
| commit | 45a687879b31caae4032abd1c2402e289d2b8083 (patch) | |
| tree | baf2307c09b2c272f9c205eac595d942eac48478 /net/bridge/br_private.h | |
| parent | Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf (diff) | |
| download | linux-dev-45a687879b31caae4032abd1c2402e289d2b8083.tar.xz linux-dev-45a687879b31caae4032abd1c2402e289d2b8083.zip | |
net: bridge: fix flags interpretation for extern learn fdb entries
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: eb100e0e24a2 ("net: bridge: allow to add externally learned entries from user-space")
Fixes: 0541a6293298 ("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>
Diffstat (limited to 'net/bridge/br_private.h')
| -rw-r--r-- | net/bridge/br_private.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index aa64d8d63ca3..2b48b204205e 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -711,7 +711,7 @@ int br_fdb_get(struct sk_buff *skb, struct nlattr *tb[], struct net_device *dev, int br_fdb_sync_static(struct net_bridge *br, struct net_bridge_port *p); void br_fdb_unsync_static(struct net_bridge *br, struct net_bridge_port *p); int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p, - const unsigned char *addr, u16 vid, bool is_local, + const unsigned char *addr, u16 vid, bool swdev_notify); int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p, const unsigned char *addr, u16 vid, |