From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Steve Wise" Subject: RE: [RFC ABI 0/8] Netlink-based IOCTLs RDMA ABI Date: Tue, 24 May 2016 16:31:31 -0500 Message-ID: <01c201d1b603$a3465e30$e9d31a90$@opengridcomputing.com> References: <1464100526-31730-1-git-send-email-leonro@mellanox.com> <1828884A29C6694DAF28B7E6B8A82373AB05004F@ORSMSX109.amr.corp.intel.com> <20160524210132.GB7950@obsidianresearch.com> <1828884A29C6694DAF28B7E6B8A82373AB0501E2@ORSMSX109.amr.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1828884A29C6694DAF28B7E6B8A82373AB0501E2-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org> Content-Language: en-us Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "'Hefty, Sean'" , 'Jason Gunthorpe' Cc: 'Leon Romanovsky' , dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org > > > > Ioctl implementations I looked at treated the ioctl buffer as > > > input-output (except for read only or write only ioctl's). Maybe > > > there's examples of redirecting the response to separate buffer(s)? > > > > There are examples of this, eg SG_IO uses scatter/gather lists > > I did come across a use of sgl's (don't recall where), but I found the documentation > so convoluted that I gave up trying to make sense of what it was attempting to do. > :) > > SGLs for input or output add complexity, so for myself, I would need to be convinced > that adding it to a common framework makes sense. (SGLs which are part of > command data are a separate issue.) Though to be fair, I find netlink based data to > be convoluted... > Makes my eyes cross... ;) -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html