[dpdk-dev] [PATCH 04/12] ixgbe/base: set VF mac address only when acked by PF

[Wenzhuo Lu <wenzhuo.lu@intel.com>]

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.

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
---
 drivers/net/ixgbe/base/ixgbe_vf.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ixgbe/base/ixgbe_vf.c b/drivers/net/ixgbe/base/ixgbe_vf.c
index 50f5e54..dbb5194 100644
--- 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;
-- 
1.9.3