[net-next v4 1/5] ixgbe: Ensure MAC filter was added before setting MACVLAN

[Jeff Kirsher]

From: Tony Nguyen <anthony.l.ngu...@intel.com>

This patch adds a check to ensure that adding the MAC filter was
successful before setting the MACVLAN.  If it was unsuccessful, propagate
the error.

Signed-off-by: Tony Nguyen <anthony.l.ngu...@intel.com>
Tested-by: Andrew Bowers <andrewx.bow...@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirs...@intel.com>
---
 drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c 
b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
index 0760bd7eeb01..112d24c6c9ce 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
@@ -679,8 +679,9 @@ static void ixgbe_clear_vf_vlans(struct ixgbe_adapter 
*adapter, u32 vf)
 static int ixgbe_set_vf_macvlan(struct ixgbe_adapter *adapter,
                                int vf, int index, unsigned char *mac_addr)
 {
-       struct list_head *pos;
        struct vf_macvlans *entry;
+       struct list_head *pos;
+       int retval = 0;
 
        if (index <= 1) {
                list_for_each(pos, &adapter->vf_mvs.l) {
@@ -721,13 +722,15 @@ static int ixgbe_set_vf_macvlan(struct ixgbe_adapter 
*adapter,
        if (!entry || !entry->free)
                return -ENOSPC;
 
+       retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
+       if (retval < 0)
+               return retval;
+
        entry->free = false;
        entry->is_macvlan = true;
        entry->vf = vf;
        memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
 
-       ixgbe_add_mac_filter(adapter, mac_addr, vf);
-
        return 0;
 }
 
-- 
2.13.3