[dpdk-dev] [PATCH v3 0/7] vmxnet3: upgrade to version 3
ferruh.yigit at intel.com
Tue Mar 7 13:21:50 CET 2017
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
> - 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.
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