From: Magnus Karlsson <magnus.karls...@intel.com>
Two new ndo ops are added. One for enabling/disabling AF_PACKET V4
zerocopy, and one for kicking the egress ring.
Signed-off-by: Magnus Karlsson <magnus.karls...@intel.com>
---
include/linux/netdevice.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 5e02f79b2110..1421206bf243 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -833,6 +833,8 @@ struct dev_ifalias {
char ifalias[];
};
+struct tp4_netdev_parms;
+
/*
* This structure defines the management hooks for network devices.
* The following hooks can be defined; unless noted otherwise, they are
@@ -1133,6 +1135,15 @@ struct dev_ifalias {
* void (*ndo_xdp_flush)(struct net_device *dev);
* This function is used to inform the driver to flush a particular
* xdp tx queue. Must be called on same CPU as xdp_xmit.
+ * int (*ndo_tp4_zerocopy)(struct net_device *dev,
+ * struct tp4_netdev_parms *parms);
+ * This function is used to enable and disable the AF_PACKET V4
+ * PACKET_ZEROCOPY support. See definition of enum tp4_netdev_command
+ * in tpacket4.h for details.
+ * int (*ndo_tp4_xmit)(struct net_device *dev, int queue_pair);
+ * This function is used to send packets when the PACKET_ZEROCOPY
+ * option is set. The rtnl lock is not held when entering this
+ * function.
*/
struct net_device_ops {
int (*ndo_init)(struct net_device *dev);
@@ -1320,6 +1331,11 @@ struct net_device_ops {
int (*ndo_xdp_xmit)(struct net_device *dev,
struct xdp_buff *xdp);
void (*ndo_xdp_flush)(struct net_device *dev);
+ int (*ndo_tp4_zerocopy)(
+ struct net_device *dev,
+ struct tp4_netdev_parms *parms);
+ int (*ndo_tp4_xmit)(struct net_device *dev,
+ int queue_pair);
};
/**
--
2.11.0
