Xen devel - Sep 2010 - Unable to bind two domains for event channel

hi,

I am trying to create an event channel between Dom0 and Dom2

*CODE:*

int main(void){

    int xce_handle, src_port, dst_port, xc_handle;

    int dom, remote_dom;

    dom=0;
    remote_dom=2;

    xc_handle=xc_interface_open();    //open the hypervisor interface
    printf("\n Accquired HYPERVISOR INTERFACE HANDLE: %d \n",
xc_handle);

    dst_port = xc_evtchn_alloc_unbound(xc_handle, remote_dom, dom);
//allocate a port on the remote domain
    printf("\n Allocated the port %d \n", dst_port);

    xce_handle = xc_evtchn_open();    //create a handle for event channel
    printf("\n Accquired HYPERVISOR INTERFACE EVTCHN HANDLE: %d\n",
xce_handle);

    src_port = xc_evtchn_bind_interdomain(xce_handle, dom, dst_port);
    printf("\n Allocated the port %d \n", src_port);

    xc_interface_close(xc_handle);
    xc_evtchn_close(xce_handle);

    return 0;

}

*OUTPUT*:
 Accquired HYPERVISOR INTERFACE HANDLE: 3

 Allocated the port 19

 Accquired HYPERVISOR INTERFACE EVTCHN HANDLE: 4

 Allocated the port -1



My src_port is not getting allocated. I am getting -1 (error) as the return
value for xc_evtchn_bind_interdomain. Can anyone help me with this?


Thanks in advance,
Srujan D. Kotikela


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On 27/09/2010 20:24, "Srujan D. Kotikela" <ksrujandas@gmail.com>
wrote:
> My src_port is not getting allocated. I am getting -1 (error) as the return
> value for xc_evtchn_bind_interdomain. Can anyone help me with this?
You should be passing remote_dom to xc_evtchn_bind_interdomain(), not dom.

 -- Keir



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Hi,

what is the wrapper for EVTCHNOP_send ?

--
Srujan D. Kotikela


On Mon, Sep 27, 2010 at 2:35 PM, Srujan D. Kotikela
<ksrujandas@gmail.com>wrote:
> Hi Keir,
>
> Thanks a lot. It worked. I misunderstood the documentation (function
> prototype) or should it be corrected?
>
> evtchn_port_or_error_t
> xc_evtchn_bind_interdomain(int xce_handle, *int domid*,
>                            evtchn_port_t *remote_port*);
>
> --
> Srujan D. Kotikela
>
>
>
> On Mon, Sep 27, 2010 at 2:31 PM, Keir Fraser <keir@xen.org> wrote:
>
>> On 27/09/2010 20:24, "Srujan D. Kotikela"
<ksrujandas@gmail.com> wrote:
>>
>> > My src_port is not getting allocated. I am getting -1 (error) as
the
>> return
>> > value for xc_evtchn_bind_interdomain. Can anyone help me with
this?
>>
>> You should be passing remote_dom to xc_evtchn_bind_interdomain(), not
dom.
>>
>>  -- Keir
>>
>>
>>
>

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