Re: [openib-general] [PATCH][iWARP] IW CM Verbs
James Lentini wrote: Why does the ib_device need a cm structure for iWARP but not IB? If you used either Guy or Roland's generic RDMA connection API and did the iWARP implementation, would you still need to add the iw_cm structure? Their connection protocol is implemented in hardware. Even with a generic CM API, I believe that they'll need these calls. - Sean ___ openib-general mailing list openib-general@openib.org http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
RE: [openib-general] [PATCH][iWARP] IW CM Verbs
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of James Lentini
> Sent: Monday, August 29, 2005 8:42 AM
> To: Tom Tucker
> Cc: openib-general@openib.org
> Subject: Re: [openib-general] [PATCH][iWARP] IW CM Verbs
>
>
>
> On Fri, 26 Aug 2005, Tom Tucker wrote:
>
> > Index: ib_verbs.h
> > ===
> > --- ib_verbs.h (revision 3120)
> > +++ ib_verbs.h (working copy)
> > @@ -804,6 +806,7 @@
> > struct ib_gid_cache **gid_cache;
> > };
> >
> > +struct iw_cm;
> > struct ib_device {
> > struct device*dma_device;
> >
> > @@ -820,6 +823,8 @@
> >
> > u32 flags;
> >
> > + struct iw_cm *iwcm;
> > +
> > int(*query_device)(struct
> ib_device *device,
> >struct
> ib_device_attr *device_attr);
> > int(*query_port)(struct
> ib_device *device,
>
> Why does the ib_device need a cm structure for iWARP but not IB?
Some RNIC devices fully establish the connection in hardware. However,
_all_ openib IB devices export the MAD interface, which is used to send
low level connection setup primitives, thus allowing connection setup in
the host.
> If
> you used either Guy or Roland's generic RDMA connection API and did
> the iWARP implementation, would you still need to add the iw_cm
> structure?
Yes.
The struct iw_cm allows the RNIC device to export a set of high level
connection verbs, if that device supports it.
Hope this helps...
Steve.
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Re: [openib-general] [PATCH][iWARP] IW CM Verbs
On Fri, 26 Aug 2005, Tom Tucker wrote:
> Index: ib_verbs.h
> ===
> --- ib_verbs.h(revision 3120)
> +++ ib_verbs.h(working copy)
> @@ -804,6 +806,7 @@
> struct ib_gid_cache **gid_cache;
> };
>
> +struct iw_cm;
> struct ib_device {
> struct device*dma_device;
>
> @@ -820,6 +823,8 @@
>
> u32 flags;
>
> + struct iw_cm *iwcm;
> +
> int(*query_device)(struct ib_device *device,
> struct ib_device_attr
> *device_attr);
> int(*query_port)(struct ib_device *device,
Why does the ib_device need a cm structure for iWARP but not IB? If
you used either Guy or Roland's generic RDMA connection API and did
the iWARP implementation, would you still need to add the iw_cm
structure?
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Re: [openib-general] [PATCH][iWARP] IW CM Verbs
On 26.08.2005 [14:44:25 -0400], Tom Tucker wrote: > > This is a cleaned up version of the iWARP CM verbs based > on feedback from Roland and Sean. I've added a new file to > contain the iw specific types and changed the iw specific > type prefix to iw_. > > Please comment, and if it looks good, I'll commit this to the > iWARP branch tonight. Just a small nit about your mailer perhaps :) > int(*query_device)(struct ib_device > *device, Seems like lines are getting wrapped? Any chance to get around this? Makes it a bit hard to read the patches... Thanks, Nish ___ openib-general mailing list openib-general@openib.org http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
