net/bnxt: fix adding MAC address

HWRM command to add MAC address can fail. Driver should check
the return value of HWRM command and do the house keeping properly.

Fixes: 778b759ba10e ("net/bnxt: add MAC address")
Cc: stable@dpdk.org
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Somnath Kotur <somnath.kotur@broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde@broadcom.com>

diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 306d627..15048de 100644 (file)
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -915,6 +915,7 @@ static int bnxt_mac_addr_add_op(struct rte_eth_dev *eth_dev,
        struct bnxt *bp = eth_dev->data->dev_private;
        struct bnxt_vnic_info *vnic = &bp->vnic_info[pool];
        struct bnxt_filter_info *filter;
+       int rc = 0;
 
        if (BNXT_VF(bp) & !BNXT_VF_IS_TRUSTED(bp)) {
                PMD_DRV_LOG(ERR, "Cannot add MAC address to a VF interface\n");
@@ -938,10 +939,20 @@ static int bnxt_mac_addr_add_op(struct rte_eth_dev *eth_dev,
                PMD_DRV_LOG(ERR, "L2 filter alloc failed\n");
                return -ENODEV;
        }
-       STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
+
        filter->mac_index = index;
        memcpy(filter->l2_addr, mac_addr, RTE_ETHER_ADDR_LEN);
-       return bnxt_hwrm_set_l2_filter(bp, vnic->fw_vnic_id, filter);
+
+       rc = bnxt_hwrm_set_l2_filter(bp, vnic->fw_vnic_id, filter);
+       if (!rc) {
+               STAILQ_INSERT_TAIL(&vnic->filter, filter, next);
+       } else {
+               filter->mac_index = INVALID_MAC_INDEX;
+               memset(&filter->l2_addr, 0, RTE_ETHER_ADDR_LEN);
+               bnxt_free_filter(bp, filter);
+       }
+
+       return rc;
 }
 
 int bnxt_link_update_op(struct rte_eth_dev *eth_dev, int wait_to_complete)