diff options
Diffstat (limited to 'net/dsa/port.c')
| -rw-r--r-- | net/dsa/port.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/net/dsa/port.c b/net/dsa/port.c index 58291df14cdb..02214033cec0 100644 --- a/net/dsa/port.c +++ b/net/dsa/port.c @@ -321,6 +321,11 @@ static void dsa_port_bridge_destroy(struct dsa_port *dp, kfree(bridge); } +static bool dsa_port_supports_mst(struct dsa_port *dp) +{ + return dsa_port_can_configure_learning(dp); +} + int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br, struct netlink_ext_ack *extack) { @@ -334,6 +339,9 @@ int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br, struct net_device *brport_dev; int err; + if (br_mst_enabled(br) && !dsa_port_supports_mst(dp)) + return -EOPNOTSUPP; + /* Here the interface is already bridged. Reflect the current * configuration so that drivers can program their chips accordingly. */ @@ -735,6 +743,20 @@ int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock) return 0; } +int dsa_port_mst_enable(struct dsa_port *dp, bool on, + struct netlink_ext_ack *extack) +{ + if (!on) + return 0; + + if (!dsa_port_supports_mst(dp)) { + NL_SET_ERR_MSG_MOD(extack, "Hardware does not support MST"); + return -EINVAL; + } + + return 0; +} + int dsa_port_pre_bridge_flags(const struct dsa_port *dp, struct switchdev_brport_flags flags, struct netlink_ext_ack *extack) |