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From: Or Gerlitz <ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
To: Roland Dreier <roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Hadar Hen Zion <hadarh-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	matanb <matanb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
	Igor Ivanov <Igor.Ivanov-wN0M4riKYwLQT0dZR+AlfA@public.gmane.org>,
	Tzahi Oved <tzahio-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Subject: Re: [PATCH V2 for-next 2/4] IB/core: Infra-structure to support verbs extensions through uverbs
Date: Wed, 26 Jun 2013 18:34:01 +0300	[thread overview]
Message-ID: <51CB09E9.3060307@mellanox.com> (raw)
In-Reply-To: <51CB05F3.3040409-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>

On 26/06/2013 18:17, Or Gerlitz wrote:
>
> Based on the bits set in the comp mask and the in_words field value, 
> the kernel which has cmdX_v2 can work towards older user space 
> libraries/applications e.g cmdX_v1 and cmdX_v0
>
> The comp mask is not part of the header, but rather the 1st field of 
> every uverbs command and response, here, in this series, it was added 
> in patch 3/4 for the uverbs flow-steering structures which are cmdX_v0 
> in this context.

The comp mask biz logic is also explained in Tzahi's OFA 2013 talk on 
verbs extensions, he is referring their to extending libibverbs API in 
user space towards applications but the concept is the same, slides here 
https://www.openfabrics.org/resources/document-downloads/presentations/doc_download/549-extending-verbs-api.html


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  parent reply	other threads:[~2013-06-26 15:34 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-06-26 12:57 [PATCH V2 for-next 0/4] Add receive Flow Steering support Or Gerlitz
     [not found] ` <1372251464-13394-1-git-send-email-ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-06-26 12:57   ` [PATCH V2 for-next 1/4] IB/core: " Or Gerlitz
     [not found]     ` <1372251464-13394-2-git-send-email-ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-06-26 19:56       ` Hefty, Sean
     [not found]         ` <1828884A29C6694DAF28B7E6B8A823736FD36FF3-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2013-06-26 21:13           ` Or Gerlitz
     [not found]             ` <CAJZOPZK_FkCJZxjyxEdk4WOTvbo8DQpcpqmuPUsqV=bZmU5W_w-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-06-26 21:33               ` Steve Wise
     [not found]                 ` <51CB5E47.7090404-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2013-06-27 22:05                   ` Or Gerlitz
2013-06-27 20:55               ` Hefty, Sean
     [not found]                 ` <1828884A29C6694DAF28B7E6B8A823736FD37415-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2013-06-27 22:09                   ` Or Gerlitz
     [not found]                     ` <CAJZOPZLf85TaCM9O3yahspRsuD3KcFzAY5b4nXxe46RiZwnk6Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-06-28  0:10                       ` Hefty, Sean
2013-06-26 12:57   ` [PATCH V2 for-next 2/4] IB/core: Infra-structure to support verbs extensions through uverbs Or Gerlitz
     [not found]     ` <1372251464-13394-3-git-send-email-ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-06-26 13:05       ` Roland Dreier
     [not found]         ` <CAL1RGDWxmM17W2o_era24A-TTDeKyoL6u3NRu_=t_dhV_ZA9MA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-06-26 15:17           ` Or Gerlitz
     [not found]             ` <51CB05F3.3040409-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2013-06-26 15:34               ` Or Gerlitz [this message]
2013-07-09 15:00           ` Tzahi Oved
     [not found]             ` <CACZyyF8=dzjktGYAWfHkXdNQycdkP5x0t=rYckTypxj7GLznzw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-16  3:33               ` Or Gerlitz
2013-06-26 12:57   ` [PATCH V2 for-next 3/4] IB/core: Export ib_create/destroy_flow " Or Gerlitz
2013-06-26 12:57   ` [PATCH V2 for-next 4/4] IB/mlx4: Add receive Flow Steering support Or Gerlitz

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