Re: [PATCH v2 1/3] i40e: enable extended tag
From: Bruce Richardson <hidden>
Date: 2016-02-23 10:44:50
On Mon, Feb 22, 2016 at 11:59:43AM +0800, Helin Zhang wrote:
quoted hunk ↗ jump to hunk
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 <redacted> --- 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