[dpdk-dev] [PATCH 02/29] net/ixgbe/base: fix condition to clear RAR entry

[Wei Dai <wei.dai@intel.com>]

Specifically the RAR entry for the SAN MAC address is being
cleared when the VMDq pool bits are cleared. In order to prevent
this we need to add an extra check to protect the SAN MAC from
being cleared.

Fixes: af75078fece3 ("first public release")

Signed-off-by: Wei Dai <wei.dai@intel.com>
---
 drivers/net/ixgbe/base/ixgbe_common.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ixgbe/base/ixgbe_common.c b/drivers/net/ixgbe/base/ixgbe_common.c
index cca19ef..b2cc6fb 100644
--- a/drivers/net/ixgbe/base/ixgbe_common.c
+++ b/drivers/net/ixgbe/base/ixgbe_common.c
@@ -3764,7 +3764,8 @@ s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
 	}
 
 	/* was that the last pool using this rar? */
-	if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0)
+	if (mpsar_lo == 0 && mpsar_hi == 0 &&
+	    rar != 0 && rar != hw->mac.san_mac_rar_index)
 		hw->mac.ops.clear_rar(hw, rar);
 done:
 	return IXGBE_SUCCESS;
-- 
2.7.4