> From: Jason Gunthorpe [mailto:jguntho...@obsidianresearch.com] > Sent: Thursday, June 11, 2015 8:22 PM > To: Wan, Kaike > Cc: linux-rdma@vger.kernel.org; Fleck, John; Weiny, Ira > Subject: Re: [PATCH v5 1/4] IB/netlink: Add defines for local service requests > through netlink > > On Thu, Jun 11, 2015 at 11:45:46PM +0000, Wan, Kaike wrote: > > Apparently, to achieve this goal, we need the following changes: > > I don't expect anything more than a proper hole in the UAPI to make this > work. > > I already have patches that implement full kernel support for the 6-path > format, and globally enable APM. With this netlink interface it becomes > feasible to mainline them. That will require some reworking of what you've > done, but I don't expect you to do that. > > The only remaining thing we need here is that tiny bit of policy information > for the kernel to specify what the intended use of the path is: > - For connected CM operation (6 path records) > - For unidirectional UD (1 path record) > - For 'misc' GMP like operation (at least 1 reversible path record) > > I'm happy if you call it PATH_USE_XX > > Testing the reversible bit should be enough to rough this in, if not > reversible it > is PATH_USE_UNIDIRECTIONAL_UD, otherwise it is PATH_USE_GMP. > > Recommend that userspace treat any unknown usage type as GMP (it is the
> most general). That would be cool. If we add this attribute, should we remove reversible and numb_path attributes? Kaike > > Ira: Do you like 'path use' better as a name? I think I do.. > > Jason -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
