Re: ib_create_qp failing

[Leon Romanovsky <leonro-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>]

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On Tue, Jan 30, 2018 at 10:30:13AM +0200, Joel Nider wrote:
> Hi Mark,
>
> Mark Bloch <markb-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org> wrote on 29/01/2018 22:47:04:
>
> > > I am using ConnectX5 EN with special firmware (I just mention it so
> you
> > > know, but I'm pretty sure that's not the problem).  I have used
> dynamic
> > > debug - it shows me that the call is failing like this:
> > >
> > > mlx5_core 0000:01:00.0: mlx5_cmd_check:714:(pid 120772):
> CREATE_QP(0x500)
> > > op_mod(0x0) failed, status bad parameter(0x3), syndrome (0x48b5c0)
> >
> > The syndrome means: "create_qp: invalid service type for RoCE"
> > what QP type are you trying to create and with what parameters?
>
> I'm trying to create an RC connection - here is an outline of my code:
> In module_init(): ib_register_client() -> registers callback
> on_device_add()
> On_device_add(): I only have one device (mlx5_0) and I save the ib_device*
> to a linked list
> From sysfs, a user writes the name (string) of the device to use - this
> starts the setup procedure
> ib_register_event_handler(rpf_ib_qp_event_handler)
> ib_query_port(dev, 1) -> state=4 max_mtu=4096 active_mtu=1024 gid_len=256
> caps=0x4010000
> ib_create_cq() -> rx completion queue
> ib_create_cq() -> tx completion queue
> ib_alloc_pd() -> the protection domain
> ib_create_qp() with:
>
>         struct ib_qp_init_attr qp_attr = {
>                 .event_handler = rpf_ib_qp_event_handler,
>                 .qp_context = res,
>                 .send_cq = res->tx_cq,
>                 .recv_cq = res->rx_cq,
>                 .srq = NULL,
>                 .cap = {
>                         .max_send_wr = 16,
>                         .max_recv_wr = 48,
>                         .max_send_sge = 2,
>                         .max_recv_sge = 1,
>                 },
>                 .sq_sig_type = IB_SIGNAL_REQ_WR,
>                 .qp_type = IB_QPT_RC,
>         };
>
> Fails with the code I mentioned earlier.  This used to fail even earlier
> until I discovered that ib_query_port() has some interesting side effects,
> and is mandatory. Maybe there is some other function that I need to call
> to set up some state first?

We strongly recommend you to contact the customer support
representative, because you are getting FW error from custom FW.

Thanks

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