Subject: [PATCH net-next v2 2/4] ice: remove redundant Rx field from rule info

From: Michal Swiatkowski <[email-masked]>
Date: Tue, 4 Apr 2023 09:28:31 +0200

Information about the direction is currently stored in sw_act.flag.
There is no need to duplicate it in another field.

Setting direction flag doesn't mean that there is a match criteria for
direction in rule. It is only a information for HW from where switch id
should be collected (VSI or port). In current implementation of advance
rule handling, without matching for direction meta data, we can always
set one the same flag and everything will work the same.

Ability to match on direction matadata will be added in follow up
patches.

Recipe 0, 3 and 9 loaded from package has direction match
criteria, but they are handled in other function.

Signed-off-by: Michal Swiatkowski <[email-masked]>
Reviewed-by: Piotr Raczynski <[email-masked]>
Reviewed-by: Simon Horman <[email-masked]>
---
 drivers/net/ethernet/intel/ice/ice_eswitch.c |  1 -
 drivers/net/ethernet/intel/ice/ice_switch.c  | 22 ++++++++++----------
 drivers/net/ethernet/intel/ice/ice_switch.h  |  2 --
 drivers/net/ethernet/intel/ice/ice_tc_lib.c  |  5 -----
 4 files changed, 11 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_eswitch.c b/drivers/net/ethernet/intel/ice/ice_eswitch.c
index f6dd3f8fd936..2c80d57331d0 100644
--- a/drivers/net/ethernet/intel/ice/ice_eswitch.c
+++ b/drivers/net/ethernet/intel/ice/ice_eswitch.c
@@ -39,7 +39,6 @@ ice_eswitch_add_vf_mac_rule(struct ice_pf *pf, struct ice_vf *vf, const u8 *mac)
 	rule_info.sw_act.flag |= ICE_FLTR_TX;
 	rule_info.sw_act.vsi_handle = ctrl_vsi->idx;
 	rule_info.sw_act.fltr_act = ICE_FWD_TO_Q;
-	rule_info.rx = false;
 	rule_info.sw_act.fwd_id.q_id = hw->func_caps.common_cap.rxq_first_id +
 				       ctrl_vsi->rxq_map[vf->vf_id];
 	rule_info.flags_info.act |= ICE_SINGLE_ACT_LB_ENABLE;
diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 5c3f266fa80f..4d3a92e0c61f 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -6121,8 +6121,7 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
 	if (rinfo->sw_act.fltr_act == ICE_FWD_TO_VSI)
 		rinfo->sw_act.fwd_id.hw_vsi_id =
 			ice_get_hw_vsi_num(hw, vsi_handle);
-	if (rinfo->sw_act.flag & ICE_FLTR_TX)
-		rinfo->sw_act.src = ice_get_hw_vsi_num(hw, vsi_handle);
+	rinfo->sw_act.src = ice_get_hw_vsi_num(hw, vsi_handle);
 
 	status = ice_add_adv_recipe(hw, lkups, lkups_cnt, rinfo, &rid);
 	if (status)
@@ -6190,19 +6189,20 @@ ice_add_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
 		goto err_ice_add_adv_rule;
 	}
 
-	/* set the rule LOOKUP type based on caller specified 'Rx'
-	 * instead of hardcoding it to be either LOOKUP_TX/RX
+	/* If there is no matching criteria for direction there
+	 * is only one difference between Rx and Tx:
+	 * - get switch id base on VSI number from source field (Tx)
+	 * - get switch id base on port number (Rx)
 	 *
-	 * for 'Rx' set the source to be the port number
-	 * for 'Tx' set the source to be the source HW VSI number (determined
-	 * by caller)
+	 * If matching on direction metadata is chose rule direction is
+	 * extracted from type value set here.
 	 */
-	if (rinfo->rx) {
-		s_rule->hdr.type = cpu_to_le16(ICE_AQC_SW_RULES_T_LKUP_RX);
-		s_rule->src = cpu_to_le16(hw->port_info->lport);
-	} else {
+	if (rinfo->sw_act.flag & ICE_FLTR_TX) {
 		s_rule->hdr.type = cpu_to_le16(ICE_AQC_SW_RULES_T_LKUP_TX);
 		s_rule->src = cpu_to_le16(rinfo->sw_act.src);
+	} else {
+		s_rule->hdr.type = cpu_to_le16(ICE_AQC_SW_RULES_T_LKUP_RX);
+		s_rule->src = cpu_to_le16(hw->port_info->lport);
 	}
 
 	s_rule->recipe_id = cpu_to_le16(rid);
diff --git a/drivers/net/ethernet/intel/ice/ice_switch.h b/drivers/net/ethernet/intel/ice/ice_switch.h
index 68d8e8a6a189..44aa37b80111 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.h
+++ b/drivers/net/ethernet/intel/ice/ice_switch.h
@@ -10,7 +10,6 @@
 #define ICE_DFLT_VSI_INVAL 0xff
 #define ICE_FLTR_RX BIT(0)
 #define ICE_FLTR_TX BIT(1)
-#define ICE_FLTR_TX_RX (ICE_FLTR_RX | ICE_FLTR_TX)
 #define ICE_VSI_INVAL_ID 0xffff
 #define ICE_INVAL_Q_HANDLE 0xFFFF
 
@@ -190,7 +189,6 @@ struct ice_adv_rule_info {
 	enum ice_sw_tunnel_type tun_type;
 	struct ice_sw_act_ctrl sw_act;
 	u32 priority;
-	u8 rx; /* true means LOOKUP_RX otherwise LOOKUP_TX */
 	u16 fltr_rule_id;
 	u16 vlan_type;
 	struct ice_adv_rule_flags_info flags_info;
diff --git a/drivers/net/ethernet/intel/ice/ice_tc_lib.c b/drivers/net/ethernet/intel/ice/ice_tc_lib.c
index 76f29a5bf8d7..b5af6cd5592b 100644
--- a/drivers/net/ethernet/intel/ice/ice_tc_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_tc_lib.c
@@ -697,11 +697,9 @@ ice_eswitch_add_tc_fltr(struct ice_vsi *vsi, struct ice_tc_flower_fltr *fltr)
 	if (fltr->direction == ICE_ESWITCH_FLTR_INGRESS) {
 		rule_info.sw_act.flag |= ICE_FLTR_RX;
 		rule_info.sw_act.src = hw->pf_id;
-		rule_info.rx = true;
 	} else {
 		rule_info.sw_act.flag |= ICE_FLTR_TX;
 		rule_info.sw_act.src = vsi->idx;
-		rule_info.rx = false;
 		rule_info.flags_info.act = ICE_SINGLE_ACT_LAN_ENABLE;
 		rule_info.flags_info.act_valid = true;
 	}
@@ -909,7 +907,6 @@ ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi,
 		rule_info.sw_act.vsi_handle = dest_vsi->idx;
 		rule_info.priority = ICE_SWITCH_FLTR_PRIO_VSI;
 		rule_info.sw_act.src = hw->pf_id;
-		rule_info.rx = true;
 		dev_dbg(dev, "add switch rule for TC:%u vsi_idx:%u, lkups_cnt:%u\n",
 			tc_fltr->action.fwd.tc.tc_class,
 			rule_info.sw_act.vsi_handle, lkups_cnt);
@@ -920,7 +917,6 @@ ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi,
 		rule_info.sw_act.vsi_handle = dest_vsi->idx;
 		rule_info.priority = ICE_SWITCH_FLTR_PRIO_QUEUE;
 		rule_info.sw_act.src = hw->pf_id;
-		rule_info.rx = true;
 		dev_dbg(dev, "add switch rule action to forward to queue:%u (HW queue %u), lkups_cnt:%u\n",
 			tc_fltr->action.fwd.q.queue,
 			tc_fltr->action.fwd.q.hw_queue, lkups_cnt);
@@ -928,7 +924,6 @@ ice_add_tc_flower_adv_fltr(struct ice_vsi *vsi,
 	case ICE_DROP_PACKET:
 		rule_info.sw_act.flag |= ICE_FLTR_RX;
 		rule_info.sw_act.src = hw->pf_id;
-		rule_info.rx = true;
 		rule_info.priority = ICE_SWITCH_FLTR_PRIO_VSI;
 		break;
 	default:
-- 
2.39.2