Date: Thu, 4 Mar 2021 02:49:49 +0000 From: "Foster, Greg" <gfoster@panasas.com> To: "freebsd-infiniband@freebsd.org" <freebsd-infiniband@freebsd.org> Cc: "Pokala, Ravi" <rpokala@panasas.com> Subject: Changing Between Infiniband Connected Mode and Datagram Mode at Runtime on FreeBSD 12.2 Message-ID: <BYAPR08MB60387BEF8DB1F72ADEAF480FB4979@BYAPR08MB6038.namprd08.prod.outlook.com>
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Hello FreeBSD IB, What is the procedure to change between Infiniband Connected Mode and Datagram Mode at runtime on FreeBSD 12.2? I've seen different references on the WEB, but the procedure still seems unclear. In one reference https://lists.freebsd.org/pipermail/freebsd-infiniband/2013-May/000032.html refers to the Linux procedure, which is not applicable on FreeBSD. Another reference, https://wiki.freebsd.org/InfiniBand, implies the driver must be recompiled to change modes. Yet another, https://lists.freebsd.org/pipermail/freebsd-infiniband/2013-June/000047.html Suggests it can be done at runtime to add a tuneable/sysctl but doesn't specify any details... Is the solution to maybe compile the drivers twice, once for CM and once for DM, keeping both around and loading the desired one? Thanks Greg Fosterhome | help
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