Re: [PATCH v8 1/3] i40e: support floating VEB config
From: Bruce Richardson <hidden>
Date: 2016-06-09 15:50:29
On Wed, May 25, 2016 at 01:28:04AM +0800, Zhe Tao wrote:
Add the new floating related argument option in the devarg. Using this parameter, all the samples can decide whether to use legacy VEB/VEPA or floating VEB. To enable this feature, the user should pass a devargs parameter to the EAL like "-w 84:00.0,enable_floating=1", and the application will make sure the PMD will use the floating VEB feature for all the VFs created by this PF device. Signed-off-by: Zhe Tao <redacted> --- drivers/net/i40e/i40e_ethdev.c | 44 ++++++++++++++++++++++++++++++++++++++++++ drivers/net/i40e/i40e_ethdev.h | 6 ++++++ 2 files changed, 50 insertions(+)
I don't think we should ever use the word "floating" in this context without the word "VEB" on it as well, because it's really meaningless - being an adjective, it always requires a noun will it. This applies both to cmdline arguments and to commit messages. Secondly, these patches really could do with an explanation of what a floating VEB is and what it can do vs a non-floating VEB. I know that in the second patch you refer to standards which define VEBs, but: a) why is that reference not in patch 1? b) when I tried looking it up the spec requires a login for the IEEE site, and a google search for "floating VEB" only brings up links to these patches in patchwork. Regards, /Bruce