netdev - [PATCH iwl-net] ice: Fix VSI list rule with ICE_SW_LKUP

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Date: Wed,  5 Jun 2024 16:17:45 +0200
From: Marcin Szycik <marcin.szycik@...ux.intel.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
	Marcin Szycik <marcin.szycik@...ux.intel.com>,
	Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>,
	Przemek Kitszel <przemyslaw.kitszel@...el.com>
Subject: [PATCH iwl-net] ice: Fix VSI list rule with ICE_SW_LKUP_LAST type

Adding/updating VSI list rule, as well as allocating/freeing VSI list
resource are called several times with type ICE_SW_LKUP_LAST, which fails
because ice_update_vsi_list_rule() and ice_aq_alloc_free_vsi_list()
consider it invalid. Allow calling these functions with ICE_SW_LKUP_LAST.

This fixes at least one issue in switchdev mode, where the same rule with
different action cannot be added, e.g.:

  tc filter add dev $PF1 ingress protocol arp prio 0 flower skip_sw \
    dst_mac ff:ff:ff:ff:ff:ff action mirred egress redirect dev $VF1_PR
  tc filter add dev $PF1 ingress protocol arp prio 0 flower skip_sw \
    dst_mac ff:ff:ff:ff:ff:ff action mirred egress redirect dev $VF2_PR

Fixes: 0f94570d0cae ("ice: allow adding advanced rules")
Suggested-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Signed-off-by: Marcin Szycik <marcin.szycik@...ux.intel.com>
---
 drivers/net/ethernet/intel/ice/ice_switch.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 94d6670d0901..1191031b2a43 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -1899,7 +1899,8 @@ ice_aq_alloc_free_vsi_list(struct ice_hw *hw, u16 *vsi_list_id,
 	    lkup_type == ICE_SW_LKUP_ETHERTYPE_MAC ||
 	    lkup_type == ICE_SW_LKUP_PROMISC ||
 	    lkup_type == ICE_SW_LKUP_PROMISC_VLAN ||
-	    lkup_type == ICE_SW_LKUP_DFLT) {
+	    lkup_type == ICE_SW_LKUP_DFLT ||
+	    lkup_type == ICE_SW_LKUP_LAST) {
 		sw_buf->res_type = cpu_to_le16(ICE_AQC_RES_TYPE_VSI_LIST_REP);
 	} else if (lkup_type == ICE_SW_LKUP_VLAN) {
 		if (opc == ice_aqc_opc_alloc_res)
@@ -2922,7 +2923,8 @@ ice_update_vsi_list_rule(struct ice_hw *hw, u16 *vsi_handle_arr, u16 num_vsi,
 	    lkup_type == ICE_SW_LKUP_ETHERTYPE_MAC ||
 	    lkup_type == ICE_SW_LKUP_PROMISC ||
 	    lkup_type == ICE_SW_LKUP_PROMISC_VLAN ||
-	    lkup_type == ICE_SW_LKUP_DFLT)
+	    lkup_type == ICE_SW_LKUP_DFLT ||
+	    lkup_type == ICE_SW_LKUP_LAST)
 		rule_type = remove ? ICE_AQC_SW_RULES_T_VSI_LIST_CLEAR :
 			ICE_AQC_SW_RULES_T_VSI_LIST_SET;
 	else if (lkup_type == ICE_SW_LKUP_VLAN)
-- 
2.45.0