ice: Rework queue management code for reuse

This patch reworks the queue management code to allow for reuse with the
XDP feature (to be added in a future patch).
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Anirudh Venkataramanan <anirudh.venkataramanan@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ice/ice.h

@@ -129,6 +129,17 @@ struct ice_res_tracker {
 	u16 list[1];
 };
 
+struct ice_qs_cfg {
+	struct mutex *qs_mutex;  /* will be assgined to &pf->avail_q_mutex */
+	unsigned long *pf_map;
+	unsigned long pf_map_size;
+	unsigned int q_count;
+	unsigned int scatter_count;
+	u16 *vsi_map;
+	u16 vsi_map_offset;
+	u8 mapping_mode;
+};
+
 struct ice_sw {
 	struct ice_pf *pf;
 	u16 sw_id;		/* switch ID for this switch */

drivers/net/ethernet/intel/ice/ice_lib.h

@@ -15,7 +15,7 @@ void ice_update_eth_stats(struct ice_vsi *vsi);
 
 int ice_vsi_cfg_rxqs(struct ice_vsi *vsi);
 
-int ice_vsi_cfg_txqs(struct ice_vsi *vsi);
+int ice_vsi_cfg_lan_txqs(struct ice_vsi *vsi);
 
 void ice_vsi_cfg_msix(struct ice_vsi *vsi);
 
@@ -31,7 +31,8 @@ int ice_vsi_start_rx_rings(struct ice_vsi *vsi);
 
 int ice_vsi_stop_rx_rings(struct ice_vsi *vsi);
 
-int ice_vsi_stop_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
+int
+ice_vsi_stop_lan_tx_rings(struct ice_vsi *vsi, enum ice_disq_rst_src rst_src,
 			  u16 rel_vmvf_num);
 
 int ice_cfg_vlan_pruning(struct ice_vsi *vsi, bool ena);

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

@@ -2546,7 +2546,8 @@ static int ice_vsi_cfg(struct ice_vsi *vsi)
 		if (err)
 			return err;
 	}
-	err = ice_vsi_cfg_txqs(vsi);
+
+	err = ice_vsi_cfg_lan_txqs(vsi);
 	if (!err)
 		err = ice_vsi_cfg_rxqs(vsi);
 
@@ -3040,7 +3041,8 @@ int ice_down(struct ice_vsi *vsi)
 	}
 
 	ice_vsi_dis_irq(vsi);
-	tx_err = ice_vsi_stop_tx_rings(vsi, ICE_NO_RESET, 0);
+
+	tx_err = ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, 0);
 	if (tx_err)
 		netdev_err(vsi->netdev,
 			   "Failed stop Tx rings, VSI %d error %d\n",

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

@@ -224,13 +224,15 @@ void ice_free_vfs(struct ice_pf *pf)
 
 	/* Avoid wait time by stopping all VFs at the same time */
 	for (i = 0; i < pf->num_alloc_vfs; i++) {
+		struct ice_vsi *vsi;
+
 		if (!test_bit(ICE_VF_STATE_ENA, pf->vf[i].vf_states))
 			continue;
 
+		vsi = pf->vsi[pf->vf[i].lan_vsi_idx];
 		/* stop rings without wait time */
-		ice_vsi_stop_tx_rings(pf->vsi[pf->vf[i].lan_vsi_idx],
-				      ICE_NO_RESET, i);
-		ice_vsi_stop_rx_rings(pf->vsi[pf->vf[i].lan_vsi_idx]);
+		ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, i);
+		ice_vsi_stop_rx_rings(vsi);
 
 		clear_bit(ICE_VF_STATE_ENA, pf->vf[i].vf_states);
 	}
@@ -831,6 +833,7 @@ static bool ice_reset_vf(struct ice_vf *vf, bool is_vflr)
 {
 	struct ice_pf *pf = vf->pf;
 	struct ice_hw *hw = &pf->hw;
+	struct ice_vsi *vsi;
 	bool rsd = false;
 	u32 reg;
 	int i;
@@ -843,17 +846,18 @@ static bool ice_reset_vf(struct ice_vf *vf, bool is_vflr)
 
 	ice_trigger_vf_reset(vf, is_vflr);
 
+	vsi = pf->vsi[vf->lan_vsi_idx];
+
 	if (test_bit(ICE_VF_STATE_ENA, vf->vf_states)) {
-		ice_vsi_stop_tx_rings(pf->vsi[vf->lan_vsi_idx], ICE_VF_RESET,
-				      vf->vf_id);
-		ice_vsi_stop_rx_rings(pf->vsi[vf->lan_vsi_idx]);
+		ice_vsi_stop_lan_tx_rings(vsi, ICE_VF_RESET, vf->vf_id);
+		ice_vsi_stop_rx_rings(vsi);
 		clear_bit(ICE_VF_STATE_ENA, vf->vf_states);
 	} else {
 		/* Call Disable LAN Tx queue AQ call even when queues are not
 		 * enabled. This is needed for successful completiom of VFR
 		 */
-		ice_dis_vsi_txq(pf->vsi[vf->lan_vsi_idx]->port_info, 0,
-				NULL, NULL, ICE_VF_RESET, vf->vf_id, NULL);
+		ice_dis_vsi_txq(vsi->port_info, 0, NULL, NULL, ICE_VF_RESET,
+				vf->vf_id, NULL);
 	}
 
 	/* poll VPGEN_VFRSTAT reg to make sure
@@ -1614,7 +1618,7 @@ static int ice_vc_dis_qs_msg(struct ice_vf *vf, u8 *msg)
 		goto error_param;
 	}
 
-	if (ice_vsi_stop_tx_rings(vsi, ICE_NO_RESET, vf->vf_id)) {
+	if (ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, vf->vf_id)) {
 		dev_err(&vsi->back->pdev->dev,
 			"Failed to stop tx rings on VSI %d\n",
 			vsi->vsi_num);
@@ -1784,7 +1788,7 @@ static int ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg)
 	vsi->num_txq = qci->num_queue_pairs;
 	vsi->num_rxq = qci->num_queue_pairs;
 
-	if (!ice_vsi_cfg_txqs(vsi) && !ice_vsi_cfg_rxqs(vsi))
+	if (!ice_vsi_cfg_lan_txqs(vsi) && !ice_vsi_cfg_rxqs(vsi))
 		aq_ret = 0;
 	else
 		aq_ret = ICE_ERR_PARAM;