ixgbe/base: set VF MAC address only when acked by PF

This patch resolves an issue where VF mac address is zeroed out
in cases where the VF driver is loaded while the PF interface
is down.
The solution is to only set it when we get an ACK from the PF.

Fixes: 6202266e5680 ("ixgbe/base: vf changes")
Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>

diff --git a/doc/guides/rel_notes/release_16_04.rst b/doc/guides/rel_notes/release_16_04.rst
index b07491a..6500dc7 100644 (file)
--- a/doc/guides/rel_notes/release_16_04.rst
+++ b/doc/guides/rel_notes/release_16_04.rst
@@ -182,6 +182,12 @@ Drivers
   Fixed an incorrect device MTU being set due to ethernet header and
   CRC lengths being added twice.
 
+* **ixgbe: Fixed zeroed VF mac address.**
+
+  Resolved an issue where VF mac address is zeroed out in cases where the VF
+  driver is loaded while the PF interface is down.
+  The solution is to only set it when we get an ACK from the PF.
+
 * **aesni_mb: Fixed wrong return value when creating a device.**
 
   cryptodev_aesni_mb_init() was returning the device id of the device created,

diff --git a/drivers/net/ixgbe/base/ixgbe_vf.c b/drivers/net/ixgbe/base/ixgbe_vf.c
index 50f5e54..dbb5194 100644 (file)
--- a/drivers/net/ixgbe/base/ixgbe_vf.c
+++ b/drivers/net/ixgbe/base/ixgbe_vf.c
@@ -228,7 +228,9 @@ s32 ixgbe_reset_hw_vf(struct ixgbe_hw *hw)
            msgbuf[0] != (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_NACK))
                return IXGBE_ERR_INVALID_MAC_ADDR;
 
-       memcpy(hw->mac.perm_addr, addr, IXGBE_ETH_LENGTH_OF_ADDRESS);
+       if (msgbuf[0] == (IXGBE_VF_RESET | IXGBE_VT_MSGTYPE_ACK))
+               memcpy(hw->mac.perm_addr, addr, IXGBE_ETH_LENGTH_OF_ADDRESS);
+
        hw->mac.mc_filter_type = msgbuf[IXGBE_VF_MC_TYPE_WORD];
 
        return ret_val;