net/i40e: fix dropping packets with ethertype 0x88A8

[dpdk.git] / drivers / net / i40e / i40e_ethdev.c

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 784635c..3c4a5f1 100644 (file)
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -915,6 +915,9 @@ config_floating_veb(struct rte_eth_dev *dev)
        }
 }
 
+#define I40E_L2_TAGS_S_TAG_SHIFT 1
+#define I40E_L2_TAGS_S_TAG_MASK I40E_MASK(0x1, I40E_L2_TAGS_S_TAG_SHIFT)
+
 static int
 eth_i40e_dev_init(struct rte_eth_dev *dev)
 {
@@ -1103,6 +1106,13 @@ eth_i40e_dev_init(struct rte_eth_dev *dev)
        /* Disable double vlan by default */
        i40e_vsi_config_double_vlan(vsi, FALSE);
 
+       /* Disable S-TAG identification by default */
+       ret = I40E_READ_REG(hw, I40E_PRT_L2TAGSEN);
+       if (ret & I40E_L2_TAGS_S_TAG_MASK) {
+               ret &= ~I40E_L2_TAGS_S_TAG_MASK;
+               I40E_WRITE_REG(hw, I40E_PRT_L2TAGSEN, ret);
+       }
+
        if (!vsi->max_macaddrs)
                len = ETHER_ADDR_LEN;
        else