[net-next v2 1/6] 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 | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c 
b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
index 0760bd7eeb01..ca492876bd3d 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c
@@ -681,6 +681,7 @@ static int ixgbe_set_vf_macvlan(struct ixgbe_adapter 
*adapter,
 {
        struct list_head *pos;
        struct vf_macvlans *entry;
+       s32 retval = 0;
 
        if (index <= 1) {
                list_for_each(pos, &adapter->vf_mvs.l) {
@@ -721,14 +722,15 @@ static int ixgbe_set_vf_macvlan(struct ixgbe_adapter 
*adapter,
        if (!entry || !entry->free)
                return -ENOSPC;
 
-       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);
+       retval = ixgbe_add_mac_filter(adapter, mac_addr, vf);
+       if (retval >= 0) {
+               entry->free = false;
+               entry->is_macvlan = true;
+               entry->vf = vf;
+               memcpy(entry->vf_macvlan, mac_addr, ETH_ALEN);
+       }
 
-       return 0;
+       return retval;
 }
 
 static inline void ixgbe_vf_reset_event(struct ixgbe_adapter *adapter, u32 vf)
-- 
2.12.2