[dpdk-dev] [PATCH v2 1/3] i40e: enable extended tag
Bruce Richardson
bruce.richardson at intel.com
Tue Feb 23 11:44:46 CET 2016
On Mon, Feb 22, 2016 at 11:59:43AM +0800, Helin Zhang wrote:
> PCIe feature of 'Extended Tag' is important for 40G performance.
> It adds its enabling during each port initialization, to ensure
> the high performance.
>
> Signed-off-by: Helin Zhang <helin.zhang at intel.com>
> ---
> doc/guides/rel_notes/release_16_04.rst | 6 ++++
> drivers/net/i40e/i40e_ethdev.c | 65 ++++++++++++++++++++++++++++++++--
> 2 files changed, 68 insertions(+), 3 deletions(-)
>
> v2:
> - Changed the type of return value of i40e_enable_extended_tag() to 'void'.
>
> diff --git a/doc/guides/rel_notes/release_16_04.rst b/doc/guides/rel_notes/release_16_04.rst
> index 5786f74..bed5779 100644
> --- a/doc/guides/rel_notes/release_16_04.rst
> +++ b/doc/guides/rel_notes/release_16_04.rst
> @@ -46,6 +46,12 @@ This section should contain new features added in this release. Sample format:
>
> * **Added vhost-user live migration support.**
>
> +* **i40e: Enabled extended tag.**
> +
> + It enabled extended tag by checking and writing corresponding PCI config
> + space bytes, to boost the performance. In the meanwhile, it deprecated the
> + legacy way via reading/writing sysfile supported by kernel module of igb_uio.
> +
Hi Helin,
does this really need to go into the release notes? Is it a user-visible change
that affects the user experience in any way?
/Bruce
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