[PATCH net-next v7 8/9] net: lan966x: Extend switchdev bridge flags

Horatiu Vultur
2021-12-17T15:53:32Z

Currently allow a port to be part or not of the multicast flooding mask.
By implementing the switchdev calls SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS
and SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS.

Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
---
.../microchip/lan966x/lan966x_switchdev.c | 34 +++++++++++++++++++
1 file changed, 34 insertions(+)

diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
index cef9e690fb82..af227b33cb3f 100644
--- a/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
+++ b/drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c
@@ -9,6 +9,34 @@ static struct notifier_block lan966x_netdevice_nb __read_mostly;
static struct notifier_block lan966x_switchdev_nb __read_mostly;
static struct notifier_block lan966x_switchdev_blocking_nb __read_mostly;

+static void lan966x_port_bridge_flags(struct lan966x_port *port,
+ struct switchdev_brport_flags flags)
+{
+ u32 val = lan_rd(port->lan966x, ANA_PGID(PGID_MC));
+
+ val = ANA_PGID_PGID_GET(val);
+
+ if (flags.mask & BR_MCAST_FLOOD) {
+ if (flags.val & BR_MCAST_FLOOD)
+ val |= BIT(port->chip_port);
+ else
+ val &= ~BIT(port->chip_port);
+ }
+
+ lan_rmw(ANA_PGID_PGID_SET(val),
+ ANA_PGID_PGID,
+ port->lan966x, ANA_PGID(PGID_MC));
+}
+
+static int lan966x_port_pre_bridge_flags(struct lan966x_port *port,
+ struct switchdev_brport_flags flags)
+{
+ if (flags.mask & ~BR_MCAST_FLOOD)
+ return -EINVAL;
+
+ return 0;
+}
+
static void lan966x_update_fwd_mask(struct lan966x *lan966x)
{
int i;
@@ -67,6 +95,12 @@ static int lan966x_port_attr_set(struct net_device *dev, const void *ctx,
return 0;

switch (attr->id) {
+ case SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS:
+ lan966x_port_bridge_flags(port, attr->u.brport_flags);
+ break;
+ case SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS:
+ err = lan966x_port_pre_bridge_flags(port, attr->u.brport_flags);
+ break;
case SWITCHDEV_ATTR_ID_PORT_STP_STATE:
lan966x_port_stp_state_set(port, attr->u.stp_state);
break;
--
2.33.0