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As described in more details in the attached documentation (see patch contents), this virtual device driver manages NetVSC interfaces in virtual machines hosted by Hyper-V/Azure platforms. This driver does not manage traffic nor Ethernet devices directly; it acts as a thin configuration layer that automatically instantiates and controls fail-safe PMD instances combining tap and PCI sub-devices, so that each NetVSC interface is exposed as a single consolidated port to DPDK applications. PCI sub-devices being hot-pluggable (e.g. during VM migration), applications automatically benefit from increased throughput when present and automatic fallback on NetVSC otherwise without interruption thanks to fail-safe's hot-plug handling. Once initialized, the sole job of the vdev_netvsc driver is to regularly scan for PCI devices to associate with NetVSC interfaces and feed their addresses to corresponding fail-safe instances. Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com> Signed-off-by: Matan Azrad <matan@mellanox.com> |
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