[dpdk-dev] [PATCH v2] net/ixgbe: fix vf reset hw error handling

[SteveX Yang]

The PF control message will interrupt the assigning MAC address for
VF when PF physical link down, and the VF reset operation returns
the IXGBE_ERR_INVALID_MAC_ADDR. In this case, reuse the MAC address
when device initialization insteads of waiting PF reassign.

Fixes: f69166c9a3c9 ("net/ixgbe: fix reset error handling")

Signed-off-by: SteveX Yang <stevex.y...@intel.com>
---
v2:
update comment.
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index fd0cb9b0e..c2fa59c73 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -5326,10 +5326,17 @@ ixgbevf_dev_start(struct rte_eth_dev *dev)
        ixgbe_dev_wait_setup_link_complete(dev, 0);
 
        err = hw->mac.ops.reset_hw(hw);
-       if (err) {
+
+       /*
+        * The VF reset operation returns the IXGBE_ERR_INVALID_MAC_ADDR when
+        * the underlying PF driver has not assigned a MAC address to the VF.
+        * In this case, reuses the MAC address from eth_ixgbevf_dev_init().
+        */
+       if (err != IXGBE_SUCCESS && err != IXGBE_ERR_INVALID_MAC_ADDR) {
                PMD_INIT_LOG(ERR, "Unable to reset vf hardware (%d)", err);
                return err;
        }
+
        hw->mac.get_link_status = true;
 
        /* negotiate mailbox API version to use with the PF. */
-- 
2.17.1