[dpdk-dev] [PATCH v2 6/7] i40e: ignore the failure of updating default macvlan filter

[Helin Zhang <helin.zhang@intel.com>]

For NVM4.2.2 or after, the firmware has the correct configurations
and load the macvlan filter as expected. It is not needed to
Update the default macvlan filter which cannot be removed at
all during initialization.

Signed-off-by: Helin Zhang <helin.zhang@intel.com>
Acked-by: Jing Chen <jing.d.chen@intel.com>
Acked-by: Cunming Liang <cunming.liang@intel.com>
---
 lib/librte_pmd_i40e/i40e_ethdev.c | 29 +++++++++++++++++------------
 1 file changed, 17 insertions(+), 12 deletions(-)

diff --git a/lib/librte_pmd_i40e/i40e_ethdev.c b/lib/librte_pmd_i40e/i40e_ethdev.c
index 204d2cb..3311d73 100644
--- a/lib/librte_pmd_i40e/i40e_ethdev.c
+++ b/lib/librte_pmd_i40e/i40e_ethdev.c
@@ -2306,11 +2306,10 @@ i40e_update_default_filter_setting(struct i40e_vsi *vsi)
 	ret = i40e_aq_remove_macvlan(hw, vsi->seid, &def_filter, 1, NULL);
 	if (ret != I40E_SUCCESS) {
 		struct i40e_mac_filter *f;
-		PMD_DRV_LOG(WARNING, "Failed to remove default [mac,vlan] config\n");
 
-		/* Even failed to update default setting, still needs to add the permanent
-		 *  mac into mac list.
-		 */
+		PMD_DRV_LOG(WARNING, "Cannot remove the default "
+						"macvlan filter\n");
+		/* It needs to add the permanent mac into mac list */
 		f = rte_zmalloc("macv_filter", sizeof(*f), 0);
 		if (f == NULL) {
 			PMD_DRV_LOG(ERR, "failed to allocate memory\n");
@@ -2320,6 +2319,7 @@ i40e_update_default_filter_setting(struct i40e_vsi *vsi)
 				ETH_ADDR_LEN);
 		TAILQ_INSERT_TAIL(&vsi->mac_list, f, next);
 		vsi->mac_num++;
+
 		return ret;
 	}
 
@@ -2516,14 +2516,19 @@ i40e_vsi_setup(struct i40e_pf *pf,
 
 		(void)rte_memcpy(pf->dev_addr.addr_bytes, hw->mac.perm_addr,
 				ETH_ADDR_LEN);
-		ret = i40e_update_default_filter_setting(vsi);
-		if (ret != I40E_SUCCESS) {
-			PMD_DRV_LOG(ERR, "Failed to remove default "
-						"filter setting\n");
-			goto fail_msix_alloc;
-		}
-	}
-	else if (type == I40E_VSI_SRIOV) {
+
+		/**
+		 * Updating default filter settings are necessary to prevent
+		 * reception of tagged packets.
+		 * Some old firmware configurations load a default macvlan
+		 * filter which accepts both tagged and untagged packets.
+		 * The updating is to use a normal filter instead if needed.
+		 * For NVM 4.2.2 or after, the updating is not needed anymore.
+		 * The firmware with correct configurations load the default
+		 * macvlan filter which is expected and cannot be removed.
+		 */
+		i40e_update_default_filter_setting(vsi);
+	} else if (type == I40E_VSI_SRIOV) {
 		memset(&ctxt, 0, sizeof(ctxt));
 		/**
 		 * For other VSI, the uplink_seid equals to uplink VSI's
-- 
1.8.1.4