ice: Adjust the VSI/Aggregator layers

Adjust the VSI/Aggregator layers based on the number of logical layers
supported by the FW. Currently the VSI and Aggregator layers are
fixed based on the 9 layer scheduler tree layout. Due to performance
reasons the number of layers of the scheduler tree is changing from
9 to 5. It requires a readjustment of these VSI/Aggregator layer values.

Signed-off-by: Raj Victor <victor.raj@intel.com>
Co-developed-by: Michal Wilczynski <michal.wilczynski@intel.com>
Signed-off-by: Michal Wilczynski <michal.wilczynski@intel.com>
Signed-off-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

drivers/net/ethernet/intel/ice/ice_sched.c

@@ -1128,12 +1128,11 @@ u8 ice_sched_get_vsi_layer(struct ice_hw *hw)
 	 *     5 or less       sw_entry_point_layer
 	 */
 	/* calculate the VSI layer based on number of layers. */
-	if (hw->num_tx_sched_layers > ICE_VSI_LAYER_OFFSET + 1) {
-		u8 layer = hw->num_tx_sched_layers - ICE_VSI_LAYER_OFFSET;
-
-		if (layer > hw->sw_entry_point_layer)
-			return layer;
-	}
+	if (hw->num_tx_sched_layers == ICE_SCHED_9_LAYERS)
+		return hw->num_tx_sched_layers - ICE_VSI_LAYER_OFFSET;
+	else if (hw->num_tx_sched_layers == ICE_SCHED_5_LAYERS)
+		/* qgroup and VSI layers are same */
+		return hw->num_tx_sched_layers - ICE_QGRP_LAYER_OFFSET;
 	return hw->sw_entry_point_layer;
 }
 
@@ -1150,13 +1149,10 @@ u8 ice_sched_get_agg_layer(struct ice_hw *hw)
 	 *     7 or less       sw_entry_point_layer
 	 */
 	/* calculate the aggregator layer based on number of layers. */
-	if (hw->num_tx_sched_layers > ICE_AGG_LAYER_OFFSET + 1) {
-		u8 layer = hw->num_tx_sched_layers - ICE_AGG_LAYER_OFFSET;
-
-		if (layer > hw->sw_entry_point_layer)
-			return layer;
-	}
-	return hw->sw_entry_point_layer;
+	if (hw->num_tx_sched_layers == ICE_SCHED_9_LAYERS)
+		return hw->num_tx_sched_layers - ICE_AGG_LAYER_OFFSET;
+	else
+		return hw->sw_entry_point_layer;
 }
 
 /**
@@ -1510,10 +1506,11 @@ ice_sched_get_free_qparent(struct ice_port_info *pi, u16 vsi_handle, u8 tc,
 {
 	struct ice_sched_node *vsi_node, *qgrp_node;
 	struct ice_vsi_ctx *vsi_ctx;
+	u8 qgrp_layer, vsi_layer;
 	u16 max_children;
-	u8 qgrp_layer;
 
 	qgrp_layer = ice_sched_get_qgrp_layer(pi->hw);
+	vsi_layer = ice_sched_get_vsi_layer(pi->hw);
 	max_children = pi->hw->max_children[qgrp_layer];
 
 	vsi_ctx = ice_get_vsi_ctx(pi->hw, vsi_handle);
@@ -1524,6 +1521,12 @@ ice_sched_get_free_qparent(struct ice_port_info *pi, u16 vsi_handle, u8 tc,
 	if (!vsi_node)
 		return NULL;
 
+	/* If the queue group and VSI layer are same then queues
+	 * are all attached directly to VSI
+	 */
+	if (qgrp_layer == vsi_layer)
+		return vsi_node;
+
 	/* get the first queue group node from VSI sub-tree */
 	qgrp_node = ice_sched_get_first_node(pi, vsi_node, qgrp_layer);
 	while (qgrp_node) {
@@ -3199,7 +3202,7 @@ ice_sched_add_rl_profile(struct ice_port_info *pi,
 	u8 profile_type;
 	int status;
 
-	if (layer_num >= ICE_AQC_TOPO_MAX_LEVEL_NUM)
+	if (!pi || layer_num >= pi->hw->num_tx_sched_layers)
 		return NULL;
 	switch (rl_type) {
 	case ICE_MIN_BW:
@@ -3215,8 +3218,6 @@ ice_sched_add_rl_profile(struct ice_port_info *pi,
 		return NULL;
 	}
 
-	if (!pi)
-		return NULL;
 	hw = pi->hw;
 	list_for_each_entry(rl_prof_elem, &pi->rl_prof_list[layer_num],
 			    list_entry)
@@ -3446,7 +3447,7 @@ ice_sched_rm_rl_profile(struct ice_port_info *pi, u8 layer_num, u8 profile_type,
 	struct ice_aqc_rl_profile_info *rl_prof_elem;
 	int status = 0;
 
-	if (layer_num >= ICE_AQC_TOPO_MAX_LEVEL_NUM)
+	if (layer_num >= pi->hw->num_tx_sched_layers)
 		return -EINVAL;
 	/* Check the existing list for RL profile */
 	list_for_each_entry(rl_prof_elem, &pi->rl_prof_list[layer_num],