Re: [PATCH v4 net-next 0/4] vmxnet3: upgrade to version 4

David Miller
2020-05-28T23:27:19Z

From: Ronak Doshi <doshir@vmware.com>
Date: Thu, 28 May 2020 14:53:18 -0700

> vmxnet3 emulation has recently added several new features which includes
> offload support for tunnel packets, support for new commands the driver
> can issue to emulation, change in descriptor fields, etc. This patch
> series extends the vmxnet3 driver to leverage these new features.
>
> Compatibility is maintained using existing vmxnet3 versioning mechanism as
> follows:
> - new features added to vmxnet3 emulation are associated with new vmxnet3
> version viz. vmxnet3 version 4.
> - emulation advertises all the versions it supports to the driver.
> - during initialization, vmxnet3 driver picks the highest version number
> supported by both the emulation and the driver and configures emulation
> to run at that version.
>
> In particular, following changes are introduced:
>
> Patch 1:
> This patch introduces utility macros for vmxnet3 version 4 comparison
> and updates Copyright information.
>
> Patch 2:
> This patch implements get_rss_hash_opts and set_rss_hash_opts methods
> to allow querying and configuring different Rx flow hash configurations
> which can be used to support UDP/ESP RSS.
>
> Patch 3:
> This patch introduces segmentation and checksum offload support for
> encapsulated packets. This avoids segmenting and calculating checksum
> for each segment and hence gives performance boost.
>
> Patch 4:
> With all vmxnet3 version 4 changes incorporated in the vmxnet3 driver,
> with this patch, the driver can configure emulation to run at vmxnet3
> version 4.
>
> Changes in v3 -> v4:
> - Replaced BUG_ON() with WARN_ON_ONCE()
...

Series applied, thanks.