ice: use src VSI instead of src MAC in slow-path

The use of a source MAC to direct packets from the VF to the corresponding
port representor is only ok if there is only one MAC on a VF. To support
this functionality when the number of MACs on a VF is greater, it is
necessary to match a source VSI instead of a source MAC.

Let's use the new switch API that allows matching on metadata.

If MAC isn't used in match criteria there is no need to handle adding
rule after virtchnl command. Instead add new rule while port representor
is being configured.

Remove rule_added field, checking for sp_rule can be used instead.
Remove also checking for switchdev running in deleting rule as it can be
called from unroll context when running flag isn't set. Checking for
sp_rule covers both context (with and without running flag).

Rules are added in eswitch configuration flow, so there is no need to
have replay function.

Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Piotr Raczynski <piotr.raczynski@intel.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

1 files changed, 27 insertions, 56 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_eswitch.c b/drivers/net/ethernet/intel/ice/ice_eswitch.c
index 2c80d57331d0..ad0a007b7398 100644
--- a/drivers/net/ethernet/intel/ice/ice_eswitch.c
+++ b/drivers/net/ethernet/intel/ice/ice_eswitch.c
@@ -10,16 +10,15 @@
 #include "ice_tc_lib.h"
 
 /**
- * ice_eswitch_add_vf_mac_rule - add adv rule with VF's MAC
+ * ice_eswitch_add_vf_sp_rule - add adv rule with VF's VSI index
  * @pf: pointer to PF struct
  * @vf: pointer to VF struct
- * @mac: VF's MAC address
  *
  * This function adds advanced rule that forwards packets with
- * VF's MAC address (src MAC) to the corresponding switchdev ctrl VSI queue.
+ * VF's VSI index to the corresponding switchdev ctrl VSI queue.
  */
-int
-ice_eswitch_add_vf_mac_rule(struct ice_pf *pf, struct ice_vf *vf, const u8 *mac)
+static int
+ice_eswitch_add_vf_sp_rule(struct ice_pf *pf, struct ice_vf *vf)
 {
 	struct ice_vsi *ctrl_vsi = pf->switchdev.control_vsi;
 	struct ice_adv_rule_info rule_info = { 0 };
@@ -32,11 +31,9 @@ ice_eswitch_add_vf_mac_rule(struct ice_pf *pf, struct ice_vf *vf, const u8 *mac)
 	if (!list)
 		return -ENOMEM;
 
-	list[0].type = ICE_MAC_OFOS;
-	ether_addr_copy(list[0].h_u.eth_hdr.src_addr, mac);
-	eth_broadcast_addr(list[0].m_u.eth_hdr.src_addr);
+	ice_rule_add_src_vsi_metadata(list);
 
-	rule_info.sw_act.flag |= ICE_FLTR_TX;
+	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.sw_act.fwd_id.q_id = hw->func_caps.common_cap.rxq_first_id +
@@ -44,63 +41,31 @@ ice_eswitch_add_vf_mac_rule(struct ice_pf *pf, struct ice_vf *vf, const u8 *mac)
 	rule_info.flags_info.act |= ICE_SINGLE_ACT_LB_ENABLE;
 	rule_info.flags_info.act_valid = true;
 	rule_info.tun_type = ICE_SW_TUN_AND_NON_TUN;
+	rule_info.src_vsi = vf->lan_vsi_idx;
 
 	err = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info,
-			       vf->repr->mac_rule);
+			       &vf->repr->sp_rule);
 	if (err)
-		dev_err(ice_pf_to_dev(pf), "Unable to add VF mac rule in switchdev mode for VF %d",
+		dev_err(ice_pf_to_dev(pf), "Unable to add VF slow-path rule in switchdev mode for VF %d",
 			vf->vf_id);
-	else
-		vf->repr->rule_added = true;
 
 	kfree(list);
 	return err;
 }
 
 /**
- * ice_eswitch_replay_vf_mac_rule - replay adv rule with VF's MAC
- * @vf: pointer to vF struct
- *
- * This function replays VF's MAC rule after reset.
- */
-void ice_eswitch_replay_vf_mac_rule(struct ice_vf *vf)
-{
-	int err;
-
-	if (!ice_is_switchdev_running(vf->pf))
-		return;
-
-	if (is_valid_ether_addr(vf->hw_lan_addr)) {
-		err = ice_eswitch_add_vf_mac_rule(vf->pf, vf,
-						  vf->hw_lan_addr);
-		if (err) {
-			dev_err(ice_pf_to_dev(vf->pf), "Failed to add MAC %pM for VF %d\n, error %d\n",
-				vf->hw_lan_addr, vf->vf_id, err);
-			return;
-		}
-		vf->num_mac++;
-
-		ether_addr_copy(vf->dev_lan_addr, vf->hw_lan_addr);
-	}
-}
-
-/**
- * ice_eswitch_del_vf_mac_rule - delete adv rule with VF's MAC
+ * ice_eswitch_del_vf_sp_rule - delete adv rule with VF's VSI index
  * @vf: pointer to the VF struct
  *
- * Delete the advanced rule that was used to forward packets with the VF's MAC
- * address (src MAC) to the corresponding switchdev ctrl VSI queue.
+ * Delete the advanced rule that was used to forward packets with the VF's VSI
+ * index to the corresponding switchdev ctrl VSI queue.
  */
-void ice_eswitch_del_vf_mac_rule(struct ice_vf *vf)
+static void ice_eswitch_del_vf_sp_rule(struct ice_vf *vf)
 {
-	if (!ice_is_switchdev_running(vf->pf))
-		return;
-
-	if (!vf->repr->rule_added)
+	if (!vf->repr)
 		return;
 
-	ice_rem_adv_rule_by_id(&vf->pf->hw, vf->repr->mac_rule);
-	vf->repr->rule_added = false;
+	ice_rem_adv_rule_by_id(&vf->pf->hw, &vf->repr->sp_rule);
 }
 
 /**
@@ -236,6 +201,7 @@ ice_eswitch_release_reprs(struct ice_pf *pf, struct ice_vsi *ctrl_vsi)
 		ice_vsi_update_security(vsi, ice_vsi_ctx_set_antispoof);
 		metadata_dst_free(vf->repr->dst);
 		vf->repr->dst = NULL;
+		ice_eswitch_del_vf_sp_rule(vf);
 		ice_fltr_add_mac_and_broadcast(vsi, vf->hw_lan_addr,
 					       ICE_FWD_TO_VSI);
 
@@ -263,25 +229,30 @@ static int ice_eswitch_setup_reprs(struct ice_pf *pf)
 		vf->repr->dst = metadata_dst_alloc(0, METADATA_HW_PORT_MUX,
 						   GFP_KERNEL);
 		if (!vf->repr->dst) {
-			ice_fltr_add_mac_and_broadcast(vsi,
-						       vf->hw_lan_addr,
+			ice_fltr_add_mac_and_broadcast(vsi, vf->hw_lan_addr,
+						       ICE_FWD_TO_VSI);
+			goto err;
+		}
+
+		if (ice_eswitch_add_vf_sp_rule(pf, vf)) {
+			ice_fltr_add_mac_and_broadcast(vsi, vf->hw_lan_addr,
 						       ICE_FWD_TO_VSI);
 			goto err;
 		}
 
 		if (ice_vsi_update_security(vsi, ice_vsi_ctx_clear_antispoof)) {
-			ice_fltr_add_mac_and_broadcast(vsi,
-						       vf->hw_lan_addr,
+			ice_fltr_add_mac_and_broadcast(vsi, vf->hw_lan_addr,
 						       ICE_FWD_TO_VSI);
+			ice_eswitch_del_vf_sp_rule(vf);
 			metadata_dst_free(vf->repr->dst);
 			vf->repr->dst = NULL;
 			goto err;
 		}
 
 		if (ice_vsi_add_vlan_zero(vsi)) {
-			ice_fltr_add_mac_and_broadcast(vsi,
-						       vf->hw_lan_addr,
+			ice_fltr_add_mac_and_broadcast(vsi, vf->hw_lan_addr,
 						       ICE_FWD_TO_VSI);
+			ice_eswitch_del_vf_sp_rule(vf);
 			metadata_dst_free(vf->repr->dst);
 			vf->repr->dst = NULL;
 			ice_vsi_update_security(vsi, ice_vsi_ctx_set_antispoof);