netvsc: transparent VF management (0c195567) · Commits · 戴 / test

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:

Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by:

David S. Miller <davem@davemloft.net>

drivers/net/hyperv/hyperv_net.h

+12 −0

Original line number	Original line	Diff line number	Diff line
	@@ -680,6 +680,15 @@ struct netvsc_ethtool_stats {
	unsigned long tx_busy;		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 netvsc_reconfig {
	struct list_head list;		struct list_head list;
	u32 event;		u32 event;
	@@ -713,6 +722,9 @@ struct net_device_context {

	/* State to manage the associated VF interface. */		/* State to manage the associated VF interface. */
	struct net_device __rcu *vf_netdev;		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 */		/* 1: allocated, serial number is valid. 0: not allocated */
	u32 vf_alloc;		u32 vf_alloc;

drivers/net/hyperv/netvsc_drv.c

+330 −89

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