net/mlx5: E-switch, Introduce helper function to enable/disable vports

vports needs to be enabled in switchdev and legacy mode.

In switchdev mode, vports should be enabled after initializing
the FDB tables and before creating their represntors so that
representor works on an initialized vport object.

Prepare a helper function which can be called when enabling either of
the eswitch modes.

Similarly, have disable vports helper function.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

1 files changed, 55 insertions, 41 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 820970911f8b..6d82aefae6e1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -58,20 +58,9 @@ struct vport_addr {
 	bool mc_promisc;
 };
 
-enum {
-	UC_ADDR_CHANGE = BIT(0),
-	MC_ADDR_CHANGE = BIT(1),
-	PROMISC_CHANGE = BIT(3),
-};
-
 static void esw_destroy_legacy_fdb_table(struct mlx5_eswitch *esw);
 static void esw_cleanup_vepa_rules(struct mlx5_eswitch *esw);
 
-/* Vport context events */
-#define SRIOV_VPORT_EVENTS (UC_ADDR_CHANGE | \
-			    MC_ADDR_CHANGE | \
-			    PROMISC_CHANGE)
-
 struct mlx5_vport *__must_check
 mlx5_eswitch_get_vport(struct mlx5_eswitch *esw, u16 vport_num)
 {
@@ -108,13 +97,13 @@ static int arm_vport_context_events_cmd(struct mlx5_core_dev *dev, u16 vport,
 
 	MLX5_SET(nic_vport_context, nic_vport_ctx, arm_change_event, 1);
 
-	if (events_mask & UC_ADDR_CHANGE)
+	if (events_mask & MLX5_VPORT_UC_ADDR_CHANGE)
 		MLX5_SET(nic_vport_context, nic_vport_ctx,
 			 event_on_uc_address_change, 1);
-	if (events_mask & MC_ADDR_CHANGE)
+	if (events_mask & MLX5_VPORT_MC_ADDR_CHANGE)
 		MLX5_SET(nic_vport_context, nic_vport_ctx,
 			 event_on_mc_address_change, 1);
-	if (events_mask & PROMISC_CHANGE)
+	if (events_mask & MLX5_VPORT_PROMISC_CHANGE)
 		MLX5_SET(nic_vport_context, nic_vport_ctx,
 			 event_on_promisc_change, 1);
 
@@ -901,21 +890,21 @@ static void esw_vport_change_handle_locked(struct mlx5_vport *vport)
 	esw_debug(dev, "vport[%d] Context Changed: perm mac: %pM\n",
 		  vport->vport, mac);
 
-	if (vport->enabled_events & UC_ADDR_CHANGE) {
+	if (vport->enabled_events & MLX5_VPORT_UC_ADDR_CHANGE) {
 		esw_update_vport_addr_list(esw, vport, MLX5_NVPRT_LIST_TYPE_UC);
 		esw_apply_vport_addr_list(esw, vport, MLX5_NVPRT_LIST_TYPE_UC);
 	}
 
-	if (vport->enabled_events & MC_ADDR_CHANGE)
+	if (vport->enabled_events & MLX5_VPORT_MC_ADDR_CHANGE)
 		esw_update_vport_addr_list(esw, vport, MLX5_NVPRT_LIST_TYPE_MC);
 
-	if (vport->enabled_events & PROMISC_CHANGE) {
+	if (vport->enabled_events & MLX5_VPORT_PROMISC_CHANGE) {
 		esw_update_vport_rx_mode(esw, vport);
 		if (!IS_ERR_OR_NULL(vport->allmulti_rule))
 			esw_update_vport_mc_promisc(esw, vport);
 	}
 
-	if (vport->enabled_events & (PROMISC_CHANGE | MC_ADDR_CHANGE))
+	if (vport->enabled_events & (MLX5_VPORT_PROMISC_CHANGE | MLX5_VPORT_MC_ADDR_CHANGE))
 		esw_apply_vport_addr_list(esw, vport, MLX5_NVPRT_LIST_TYPE_MC);
 
 	esw_debug(esw->dev, "vport[%d] Context Changed: Done\n", vport->vport);
@@ -1649,7 +1638,7 @@ static void esw_vport_destroy_drop_counters(struct mlx5_vport *vport)
 }
 
 static void esw_enable_vport(struct mlx5_eswitch *esw, struct mlx5_vport *vport,
-			     int enable_events)
+			     enum mlx5_eswitch_vport_event enabled_events)
 {
 	u16 vport_num = vport->vport;
 
@@ -1671,7 +1660,7 @@ static void esw_enable_vport(struct mlx5_eswitch *esw, struct mlx5_vport *vport,
 		esw_warn(esw->dev, "Failed to attach vport %d to eswitch rate limiter", vport_num);
 
 	/* Sync with current vport context */
-	vport->enabled_events = enable_events;
+	vport->enabled_events = enabled_events;
 	vport->enabled = true;
 
 	/* Esw manager is trusted by default. Host PF (vport 0) is trusted as well
@@ -1800,11 +1789,51 @@ static void mlx5_eswitch_event_handlers_unregister(struct mlx5_eswitch *esw)
 /* Public E-Switch API */
 #define ESW_ALLOWED(esw) ((esw) && MLX5_ESWITCH_MANAGER((esw)->dev))
 
-int mlx5_eswitch_enable(struct mlx5_eswitch *esw, int mode)
+/* mlx5_eswitch_enable_pf_vf_vports() enables vports of PF, ECPF and VFs
+ * whichever are present on the eswitch.
+ */
+void
+mlx5_eswitch_enable_pf_vf_vports(struct mlx5_eswitch *esw,
+				 enum mlx5_eswitch_vport_event enabled_events)
+{
+	struct mlx5_vport *vport;
+	int i;
+
+	/* Enable PF vport */
+	vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_PF);
+	esw_enable_vport(esw, vport, enabled_events);
+
+	/* Enable ECPF vports */
+	if (mlx5_ecpf_vport_exists(esw->dev)) {
+		vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_ECPF);
+		esw_enable_vport(esw, vport, enabled_events);
+	}
+
+	/* Enable VF vports */
+	mlx5_esw_for_each_vf_vport(esw, i, vport, esw->esw_funcs.num_vfs)
+		esw_enable_vport(esw, vport, enabled_events);
+}
+
+/* mlx5_eswitch_disable_pf_vf_vports() disables vports of PF, ECPF and VFs
+ * whichever are previously enabled on the eswitch.
+ */
+void mlx5_eswitch_disable_pf_vf_vports(struct mlx5_eswitch *esw)
 {
 	struct mlx5_vport *vport;
+	int i;
+
+	mlx5_esw_for_all_vports_reverse(esw, i, vport)
+		esw_disable_vport(esw, vport);
+}
+
+#define MLX5_LEGACY_SRIOV_VPORT_EVENTS (MLX5_VPORT_UC_ADDR_CHANGE | \
+					MLX5_VPORT_MC_ADDR_CHANGE | \
+					MLX5_VPORT_PROMISC_CHANGE)
+
+int mlx5_eswitch_enable(struct mlx5_eswitch *esw, int mode)
+{
+	int enabled_events;
 	int err;
-	int i, enabled_events;
 
 	if (!ESW_ALLOWED(esw) ||
 	    !MLX5_CAP_ESW_FLOWTABLE_FDB(esw->dev, ft_support)) {
@@ -1837,22 +1866,10 @@ int mlx5_eswitch_enable(struct mlx5_eswitch *esw, int mode)
 	if (err)
 		goto abort;
 
-	enabled_events = (mode == MLX5_ESWITCH_LEGACY) ? SRIOV_VPORT_EVENTS :
-		UC_ADDR_CHANGE;
+	enabled_events = (mode == MLX5_ESWITCH_LEGACY) ? MLX5_LEGACY_SRIOV_VPORT_EVENTS :
+		MLX5_VPORT_UC_ADDR_CHANGE;
 
-	/* Enable PF vport */
-	vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_PF);
-	esw_enable_vport(esw, vport, enabled_events);
-
-	/* Enable ECPF vports */
-	if (mlx5_ecpf_vport_exists(esw->dev)) {
-		vport = mlx5_eswitch_get_vport(esw, MLX5_VPORT_ECPF);
-		esw_enable_vport(esw, vport, enabled_events);
-	}
-
-	/* Enable VF vports */
-	mlx5_esw_for_each_vf_vport(esw, i, vport, esw->esw_funcs.num_vfs)
-		esw_enable_vport(esw, vport, enabled_events);
+	mlx5_eswitch_enable_pf_vf_vports(esw, enabled_events);
 
 	mlx5_eswitch_event_handlers_register(esw);
 
@@ -1876,9 +1893,7 @@ abort:
 void mlx5_eswitch_disable(struct mlx5_eswitch *esw)
 {
 	struct esw_mc_addr *mc_promisc;
-	struct mlx5_vport *vport;
 	int old_mode;
-	int i;
 
 	if (!ESW_ALLOWED(esw) || esw->mode == MLX5_ESWITCH_NONE)
 		return;
@@ -1890,8 +1905,7 @@ void mlx5_eswitch_disable(struct mlx5_eswitch *esw)
 	mc_promisc = &esw->mc_promisc;
 	mlx5_eswitch_event_handlers_unregister(esw);
 
-	mlx5_esw_for_all_vports(esw, i, vport)
-		esw_disable_vport(esw, vport);
+	mlx5_eswitch_disable_pf_vf_vports(esw);
 
 	if (mc_promisc && mc_promisc->uplink_rule)
 		mlx5_del_flow_rules(mc_promisc->uplink_rule);