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macvlan: Provide function for interfaces to release HW offload 

This patch provides a basic function to allow a lower device to disable
macvlan offload if it was previously enabled on a given macvlan. The idea
here is to allow for recovery from failure should the lowerdev run out of
resources.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Alexander Duyck 2018-04-03 17:16:30 -04:00 committed by Jeff Kirsher
parent 6cb1937d4e
commit 53cd4d8e4d
1 changed files with 8 additions and 0 deletions
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8
include/linux/if_macvlan.h
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@ -97,4 +97,12 @@ static inline bool macvlan_supports_dest_filter(struct net_device *dev)
macvlan->mode == MACVLAN_MODE_VEPA ||
macvlan->mode == MACVLAN_MODE_BRIDGE;
}
static inline int macvlan_release_l2fw_offload(struct net_device *dev)
{
struct macvlan_dev *macvlan = netdev_priv(dev);
macvlan->accel_priv = NULL;
return dev_uc_add(macvlan->lowerdev, dev->dev_addr);
}
#endif /* _LINUX_IF_MACVLAN_H */