Commit 0c195567 authored by stephen hemminger's avatar stephen hemminger Committed by David S. Miller

netvsc: transparent VF management

This patch implements transparent fail over from synthetic NIC to
SR-IOV virtual function NIC in Hyper-V environment. It is a better
alternative to using bonding as is done now. Instead, the receive and
transmit fail over is done internally inside the driver.

Using bonding driver has lots of issues because it depends on the
script being run early enough in the boot process and with sufficient
information to make the association. This patch moves all that
functionality into the kernel.
Signed-off-by: default avatarStephen Hemminger <>
Signed-off-by: default avatarDavid S. Miller <>
parent 638ce0fc
......@@ -680,6 +680,15 @@ struct netvsc_ethtool_stats {
unsigned long tx_busy;
struct netvsc_vf_pcpu_stats {
u64 rx_packets;
u64 rx_bytes;
u64 tx_packets;
u64 tx_bytes;
struct u64_stats_sync syncp;
u32 tx_dropped;
struct netvsc_reconfig {
struct list_head list;
u32 event;
......@@ -713,6 +722,9 @@ struct net_device_context {
/* State to manage the associated VF interface. */
struct net_device __rcu *vf_netdev;
struct netvsc_vf_pcpu_stats __percpu *vf_stats;
struct work_struct vf_takeover;
struct work_struct vf_notify;
/* 1: allocated, serial number is valid. 0: not allocated */
u32 vf_alloc;
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