ice: Unset src prune on uplink VSI

In switchdev mode uplink VSI is supposed to receive all packets that
were not matched by existing filters. If ICE_AQ_VSI_SW_FLAG_LOCAL_LB
bit is unset and we have a filter associated with uplink VSI
which matches on dst mac equal to MAC1, then packets with src mac equal
to MAC1 will be pruned from reaching uplink VSI.

Fix this by updating uplink VSI with ICE_AQ_VSI_SW_FLAG_LOCAL_LB bit
set when configuring switchdev mode.
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Sujai Buvaneswaran <sujai.buvaneswaran@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>

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

@@ -113,8 +113,13 @@ static int ice_eswitch_setup_env(struct ice_pf *pf)
 	if (ice_vsi_update_security(ctrl_vsi, ice_vsi_ctx_set_allow_override))
 		goto err_override_control;
 
+	if (ice_vsi_update_local_lb(uplink_vsi, true))
+		goto err_override_local_lb;
+
 	return 0;
 
+err_override_local_lb:
+	ice_vsi_update_security(ctrl_vsi, ice_vsi_ctx_clear_allow_override);
 err_override_control:
 	ice_vsi_update_security(uplink_vsi, ice_vsi_ctx_clear_allow_override);
 err_override_uplink:
@@ -391,6 +396,7 @@ static void ice_eswitch_release_env(struct ice_pf *pf)
 
 	vlan_ops = ice_get_compat_vsi_vlan_ops(uplink_vsi);
 
+	ice_vsi_update_local_lb(uplink_vsi, false);
 	ice_vsi_update_security(ctrl_vsi, ice_vsi_ctx_clear_allow_override);
 	ice_vsi_update_security(uplink_vsi, ice_vsi_ctx_clear_allow_override);
 	vlan_ops->ena_rx_filtering(uplink_vsi);

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

@@ -4076,3 +4076,28 @@ void ice_vsi_ctx_clear_allow_override(struct ice_vsi_ctx *ctx)
 {
 	ctx->info.sec_flags &= ~ICE_AQ_VSI_SEC_FLAG_ALLOW_DEST_OVRD;
 }
+
+/**
+ * ice_vsi_update_local_lb - update sw block in VSI with local loopback bit
+ * @vsi: pointer to VSI structure
+ * @set: set or unset the bit
+ */
+int
+ice_vsi_update_local_lb(struct ice_vsi *vsi, bool set)
+{
+	struct ice_vsi_ctx ctx = {
+		.info	= vsi->info,
+	};
+
+	ctx.info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SW_VALID);
+	if (set)
+		ctx.info.sw_flags |= ICE_AQ_VSI_SW_FLAG_LOCAL_LB;
+	else
+		ctx.info.sw_flags &= ~ICE_AQ_VSI_SW_FLAG_LOCAL_LB;
+
+	if (ice_update_vsi(&vsi->back->hw, vsi->idx, &ctx, NULL))
+		return -ENODEV;
+
+	vsi->info = ctx.info;
+	return 0;
+}

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

@@ -157,6 +157,7 @@ void ice_vsi_ctx_clear_antispoof(struct ice_vsi_ctx *ctx);
 void ice_vsi_ctx_set_allow_override(struct ice_vsi_ctx *ctx);
 
 void ice_vsi_ctx_clear_allow_override(struct ice_vsi_ctx *ctx);
+int ice_vsi_update_local_lb(struct ice_vsi *vsi, bool set);
 int ice_vsi_add_vlan_zero(struct ice_vsi *vsi);
 int ice_vsi_del_vlan_zero(struct ice_vsi *vsi);
 bool ice_vsi_has_non_zero_vlans(struct ice_vsi *vsi);