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| author | Tobias Waldekranz <tobias@waldekranz.com> | 2022-03-16 16:08:50 +0100 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-03-17 16:49:58 -0700 |
| commit | 48d57b2e5f439246c4e12ed7705a5e3241294b03 (patch) | |
| tree | 19399b45e6fa5db91ef923b29db6aecfeef7f446 /net | |
| parent | cceac97afa090284b3ceecd93ea6b7b527116767 (diff) | |
| download | ci-48d57b2e5f439246c4e12ed7705a5e3241294b03.tar.gz | |
net: bridge: mst: Add helper to check if MST is enabled
This is useful for switchdev drivers that might want to refuse to join
a bridge where MST is enabled, if the hardware can't support it.
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bridge/br_mst.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/net/bridge/br_mst.c b/net/bridge/br_mst.c index 00b36e62922438..830a5746479fed 100644 --- a/net/bridge/br_mst.c +++ b/net/bridge/br_mst.c @@ -13,6 +13,15 @@ DEFINE_STATIC_KEY_FALSE(br_mst_used); +bool br_mst_enabled(const struct net_device *dev) +{ + if (!netif_is_bridge_master(dev)) + return false; + + return br_opt_get(netdev_priv(dev), BROPT_MST_ENABLED); +} +EXPORT_SYMBOL_GPL(br_mst_enabled); + int br_mst_get_info(const struct net_device *dev, u16 msti, unsigned long *vids) { const struct net_bridge_vlan_group *vg; |