[dpdk-dev] [PATCH v3 0/7] vmxnet3: upgrade to version 3

[Ferruh Yigit]

On 3/6/2017 10:55 PM, Shrikrishna Khare wrote:
> vmxnet3 emulation has recently added several new features which includes
> 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 3.
>  - 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:
>   Trivial cleanup in preparation of version 3 changes.
> 
> Patch 2:
>   This patch introduces generalized command interface which allows
>   for easily adding new commands that vmxnet3 driver can issue to the
>   emulation. Further patches in this series make use of this facility.
> 
> Patch 3:
>   Transmit data ring buffer is used to copy packet headers or small
>   packets. It is a fixed size buffer. This patch extends the driver to
>   allow variable sized transmit data ring buffer.
> 
> Patch 4:
>   This patch introduces receive data ring buffer - a set of small sized
>   buffers that are always mapped by the emulation. This avoids memory
>   mapping/unmapping overhead for small packets.
> 
> Patch 5:
>   This patch adds reserved commands.
> 
> Patch 6:
>   In vmxnet3 version 3, the emulation added support for the vmxnet3 driver
>   to communicate information about the memory regions the driver will use
>   for rx/tx buffers. This patch exposes related commands to the driver. The
>   driver is also extended to make use of this feaeture.
> 
> Patch 7:
>   With all vmxnet3 version 3 changes incorporated in the vmxnet3 driver,
>   with this patch, the driver can configure emulation to run at vmxnet3
>   version 3.
> 
> ---
> 
> Changes in v2:
>   - updated release notes to document vmxnet3 version 3 support.
>   - fixed coding style issues identified by checkpatches.sh.
>   - fixed patch title style issued identified by check-git-log.sh.
>   - fixed compilation issues hit when debug logging is turned on.
> 
> Change in v3:
>   - fix a typo in commit message for add receive data ring change
> 
> Shrikrishna Khare (7):
>   net/vmxnet3: prepare for version 3 changes
>   net/vmxnet3: introduce generalized cmd interface
>   net/vmxnet3: variable length transmit data ring
>   net/vmxnet3: add receive data ring support
>   net/vmxnet3: add reserved version 3 command
>   net/vmxnet3: add cmd to register memory region
>   net/vmxnet3: update to version 3

Series applied to dpdk-next-net/master, thanks.