Quoting r. Michael S. Tsirkin <[EMAIL PROTECTED]>:
> Subject: Re: ANNOUNCE: First usable version of userspace verbs
>
> Quoting r. Roland Dreier <[EMAIL PROTECTED]>:
> > Subject: Re: ANNOUNCE: First usable version of userspace verbs
> >
> > Michael> The pingpong test fails for me, on x86_64. (The
> > Michael> executable being a 64 bit one). My kernel is 2.6.10.
> >
> > OK, I installed x86_64 userspace and got user verbs working. The
> > first problem you ran into was because on a 32-bit arch,
> >
> > struct {
> > uint64_t a;
> > uint32_t b;
> > };
> >
> > has size 12 but on a 64-bit arch it has size 16. Because of the way I
> > tested sizes of parameters passed into the kernel, it was basically
> > looking for userspace to pass a size of 12. I fixed this by padding
> > all the structs to a multiple of 8 bytes so we don't run into this.
> >
> > I also fixed a few warnings and other small glitches, and now the
> > pingpong test works for me from both 32- and 64-bit userspace.
> >
> > Since the ABI is different, you'll have to rebuild both the kernel
> > modules and the userspace libraries when updating.
> >
> > Thanks,
> > Roland
> >
>
> Hmm.
> # /usr/local/bin/ibv_pingpong
> (no diagnostic is produced)
This seems to be caused by SM not running. Here's a patch to make
it produce a diagnostic message.
Signed-off-by: Michael S. Tsirkin <[EMAIL PROTECTED]>
Index: libibverbs/examples/pingpong.c
===================================================================
--- libibverbs/examples/pingpong.c (revision 1922)
+++ libibverbs/examples/pingpong.c (working copy)
@@ -560,8 +560,10 @@
my_dest.lid = pp_get_local_lid(ib_dev, ib_port);
my_dest.qpn = ctx->qp->qp_num;
my_dest.psn = lrand48() & 0xffffff;
- if (!my_dest.lid)
+ if (!my_dest.lid) {
+ fprintf(stderr, "Local lid 0x0 detected. Is an SM running?\n");
return 1;
+ }
printf(" local address: LID 0x%04x, QPN 0x%06x, PSN 0x%06x\n",
my_dest.lid, my_dest.qpn, my_dest.psn);
--
MST - Michael S. Tsirkin
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