netdev - [iwl next-queue PATCH 07/10] macvlan: Provide function for interfaces to release HW offload

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Date:   Tue, 03 Apr 2018 17:16:30 -0400
From:   Alexander Duyck <alexander.h.duyck@...el.com>
To:     intel-wired-lan@...ts.osuosl.org, jeffrey.t.kirsher@...el.com
Cc:     netdev@...r.kernel.org
Subject: [iwl next-queue PATCH 07/10] 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@...el.com>
---
 include/linux/if_macvlan.h |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/linux/if_macvlan.h b/include/linux/if_macvlan.h
index 0221390..2e55e4c 100644
--- a/include/linux/if_macvlan.h
+++ b/include/linux/if_macvlan.h
@@ -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 */