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 Datag= ram Mode at runtime on FreeBSD 12.2? I've seen different references on the WEB, but the procedure still seems un= clear. In one reference https://lists.freebsd.org/pipermail/freebsd-infiniband/201= 3-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-Ju= ne/000047.html Suggests it can be done at runtime to add a tuneable/sysctl but doesn't spe= cify any details... Is the solution to maybe compile the drivers twice, once for CM and once fo= r DM, keeping both around and loading the desired one? Thanks Greg Foster
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