[openib-general] cma_tavor_quirk.patch

[Bill Hartner]

I downloaded OFED 1.1 and tried using tavor_quirk to improve uDAPL
performance.
I thought tavor_quirk would set the MTU to 1024, but the patch looks like
this:

# cat kernel_patches/fixes/cma_tavor_quirk.patch
[snip]
--- linux-2.6.18-rc2-devel.orig/drivers/infiniband/core/cma.c
+++ linux-2.6.18-rc2-devel/drivers/infiniband/core/cma.c
[snip]
+       if (tavor_quirk) {
+               path_rec.mtu_selector = IB_SA_LT;
+               path_rec.mtu = IB_MTU_2048;
+       }
+
[snip]

Is this correct, or should MTU be set to 1024 when tavor_quirk is used?

http://openib.org/pipermail/openib-general/2006-September/026097.html

-Bill