diff mbox series

[iwl-next,v1,3/8] ice: default Tx rule instead of to queue

Message ID 20240125125314.852914-4-michal.swiatkowski@linux.intel.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series ice: use less resources in switchdev | expand

Checks

Context Check Description
netdev/series_format warning Target tree name not specified in the subject
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1077 this patch: 1077
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 0 of 0 maintainers
netdev/build_clang success Errors and warnings before: 1095 this patch: 1095
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 1095 this patch: 1095
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 186 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest pending net-next-2024-01-25--15-00

Commit Message

Michal Swiatkowski Jan. 25, 2024, 12:53 p.m. UTC
Steer all packets that miss other rules to PF VSI. Previously in
switchdev mode, PF VSI received missed packets, but only ones marked
as Rx. Now it is receiving all missed packets.

To queue rule per PR isn't needed, because we use PF VSI instead of
control VSI now, and it's already correctly configured.

Add flag to correctly set LAN_EN bit in default Tx rule. It shouldn't
allow packet to go outside when there is a match.

Reviewed-by: Marcin Szycik <marcin.szycik@linux.intel.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
---
 drivers/net/ethernet/intel/ice/ice_eswitch.c | 107 +++----------------
 drivers/net/ethernet/intel/ice/ice_repr.h    |   4 -
 drivers/net/ethernet/intel/ice/ice_switch.c  |   4 +
 drivers/net/ethernet/intel/ice/ice_switch.h  |   5 +-
 4 files changed, 23 insertions(+), 97 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/intel/ice/ice_eswitch.c b/drivers/net/ethernet/intel/ice/ice_eswitch.c
index 8ad271534d80..50b3de700837 100644
--- a/drivers/net/ethernet/intel/ice/ice_eswitch.c
+++ b/drivers/net/ethernet/intel/ice/ice_eswitch.c
@@ -10,85 +10,6 @@ 
 #include "ice_devlink.h"
 #include "ice_tc_lib.h"
 
-/**
- * ice_eswitch_del_sp_rules - delete adv rules added on PRs
- * @pf: pointer to the PF struct
- *
- * Delete all advanced rules that were used to forward packets with the
- * device's VSI index to the corresponding eswitch ctrl VSI queue.
- */
-static void ice_eswitch_del_sp_rules(struct ice_pf *pf)
-{
-	struct ice_repr *repr;
-	unsigned long id;
-
-	xa_for_each(&pf->eswitch.reprs, id, repr) {
-		if (repr->sp_rule.rid)
-			ice_rem_adv_rule_by_id(&pf->hw, &repr->sp_rule);
-	}
-}
-
-/**
- * ice_eswitch_add_sp_rule - add adv rule with device's VSI index
- * @pf: pointer to PF struct
- * @repr: pointer to the repr struct
- *
- * This function adds advanced rule that forwards packets with
- * device's VSI index to the corresponding eswitch ctrl VSI queue.
- */
-static int ice_eswitch_add_sp_rule(struct ice_pf *pf, struct ice_repr *repr)
-{
-	struct ice_vsi *ctrl_vsi = pf->eswitch.control_vsi;
-	struct ice_adv_rule_info rule_info = { 0 };
-	struct ice_adv_lkup_elem *list;
-	struct ice_hw *hw = &pf->hw;
-	const u16 lkups_cnt = 1;
-	int err;
-
-	list = kcalloc(lkups_cnt, sizeof(*list), GFP_ATOMIC);
-	if (!list)
-		return -ENOMEM;
-
-	ice_rule_add_src_vsi_metadata(list);
-
-	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 +
-				       ctrl_vsi->rxq_map[repr->q_id];
-	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 = repr->src_vsi->idx;
-
-	err = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info,
-			       &repr->sp_rule);
-	if (err)
-		dev_err(ice_pf_to_dev(pf), "Unable to add slow-path rule for eswitch for PR %d",
-			repr->id);
-
-	kfree(list);
-	return err;
-}
-
-static int
-ice_eswitch_add_sp_rules(struct ice_pf *pf)
-{
-	struct ice_repr *repr;
-	unsigned long id;
-	int err;
-
-	xa_for_each(&pf->eswitch.reprs, id, repr) {
-		err = ice_eswitch_add_sp_rule(pf, repr);
-		if (err) {
-			ice_eswitch_del_sp_rules(pf);
-			return err;
-		}
-	}
-
-	return 0;
-}
-
 /**
  * ice_eswitch_setup_env - configure eswitch HW filters
  * @pf: pointer to PF struct
@@ -102,7 +23,6 @@  static int ice_eswitch_setup_env(struct ice_pf *pf)
 	struct ice_vsi *ctrl_vsi = pf->eswitch.control_vsi;
 	struct net_device *netdev = uplink_vsi->netdev;
 	struct ice_vsi_vlan_ops *vlan_ops;
-	bool rule_added = false;
 
 	ice_remove_vsi_fltr(&pf->hw, uplink_vsi->idx);
 
@@ -112,17 +32,19 @@  static int ice_eswitch_setup_env(struct ice_pf *pf)
 	netif_addr_unlock_bh(netdev);
 
 	if (ice_vsi_add_vlan_zero(uplink_vsi))
+		goto err_vlan_zero;
+
+	if (ice_cfg_dflt_vsi(uplink_vsi->port_info, uplink_vsi->idx, true,
+			     ICE_FLTR_RX))
 		goto err_def_rx;
 
-	if (!ice_is_dflt_vsi_in_use(uplink_vsi->port_info)) {
-		if (ice_set_dflt_vsi(uplink_vsi))
-			goto err_def_rx;
-		rule_added = true;
-	}
+	if (ice_cfg_dflt_vsi(uplink_vsi->port_info, uplink_vsi->idx, true,
+			     ICE_FLTR_TX))
+		goto err_def_tx;
 
 	vlan_ops = ice_get_compat_vsi_vlan_ops(uplink_vsi);
 	if (vlan_ops->dis_rx_filtering(uplink_vsi))
-		goto err_dis_rx;
+		goto err_vlan_filtering;
 
 	if (ice_vsi_update_security(uplink_vsi, ice_vsi_ctx_set_allow_override))
 		goto err_override_uplink;
@@ -141,10 +63,15 @@  static int ice_eswitch_setup_env(struct ice_pf *pf)
 	ice_vsi_update_security(uplink_vsi, ice_vsi_ctx_clear_allow_override);
 err_override_uplink:
 	vlan_ops->ena_rx_filtering(uplink_vsi);
-err_dis_rx:
-	if (rule_added)
-		ice_clear_dflt_vsi(uplink_vsi);
+err_vlan_filtering:
+	ice_cfg_dflt_vsi(uplink_vsi->port_info, uplink_vsi->idx, false,
+			 ICE_FLTR_TX);
+err_def_tx:
+	ice_cfg_dflt_vsi(uplink_vsi->port_info, uplink_vsi->idx, false,
+			 ICE_FLTR_RX);
 err_def_rx:
+	ice_vsi_del_vlan_zero(uplink_vsi);
+err_vlan_zero:
 	ice_fltr_add_mac_and_broadcast(uplink_vsi,
 				       uplink_vsi->port_info->mac.perm_addr,
 				       ICE_FWD_TO_VSI);
@@ -585,7 +512,6 @@  void ice_eswitch_stop_all_tx_queues(struct ice_pf *pf)
 
 static void ice_eswitch_stop_reprs(struct ice_pf *pf)
 {
-	ice_eswitch_del_sp_rules(pf);
 	ice_eswitch_stop_all_tx_queues(pf);
 	ice_eswitch_napi_disable(&pf->eswitch.reprs);
 }
@@ -594,7 +520,6 @@  static void ice_eswitch_start_reprs(struct ice_pf *pf)
 {
 	ice_eswitch_napi_enable(&pf->eswitch.reprs);
 	ice_eswitch_start_all_tx_queues(pf);
-	ice_eswitch_add_sp_rules(pf);
 }
 
 static void
diff --git a/drivers/net/ethernet/intel/ice/ice_repr.h b/drivers/net/ethernet/intel/ice/ice_repr.h
index b107e058d538..34823f58cd23 100644
--- a/drivers/net/ethernet/intel/ice/ice_repr.h
+++ b/drivers/net/ethernet/intel/ice/ice_repr.h
@@ -16,10 +16,6 @@  struct ice_repr {
 	int q_id;
 	u32 id;
 	u8 parent_mac[ETH_ALEN];
-#ifdef CONFIG_ICE_SWITCHDEV
-	/* info about slow path rule */
-	struct ice_rule_query_data sp_rule;
-#endif
 };
 
 struct ice_repr *ice_repr_add_vf(struct ice_vf *vf);
diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index f84bab80ca42..ce0b344dda99 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -2444,6 +2444,9 @@  static void ice_fill_sw_info(struct ice_hw *hw, struct ice_fltr_info *fi)
 			fi->lan_en = true;
 		}
 	}
+
+	if (fi->flag & ICE_FLTR_TX_ONLY)
+		fi->lan_en = false;
 }
 
 /**
@@ -3819,6 +3822,7 @@  ice_cfg_dflt_vsi(struct ice_port_info *pi, u16 vsi_handle, bool set,
 	} else if (f_info.flag & ICE_FLTR_TX) {
 		f_info.src_id = ICE_SRC_ID_VSI;
 		f_info.src = hw_vsi_id;
+		f_info.flag |= ICE_FLTR_TX_ONLY;
 	}
 	f_list_entry.fltr_info = f_info;
 
diff --git a/drivers/net/ethernet/intel/ice/ice_switch.h b/drivers/net/ethernet/intel/ice/ice_switch.h
index db7e501b7e0a..6f2cf9d6d01b 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.h
+++ b/drivers/net/ethernet/intel/ice/ice_switch.h
@@ -8,8 +8,9 @@ 
 
 #define ICE_SW_CFG_MAX_BUF_LEN 2048
 #define ICE_DFLT_VSI_INVAL 0xff
-#define ICE_FLTR_RX BIT(0)
-#define ICE_FLTR_TX BIT(1)
+#define ICE_FLTR_RX		BIT(0)
+#define ICE_FLTR_TX		BIT(1)
+#define ICE_FLTR_TX_ONLY	BIT(2)
 #define ICE_VSI_INVAL_ID 0xffff
 #define ICE_INVAL_Q_HANDLE 0xFFFF