On Jun 18, 11:19 am, Boaz Harrosh <bharr...@panasas.com> wrote:
> On 06/18/2009 10:56 AM, Joachim Worringen wrote:
> > Greetings,
> > I tried to use Open-iSCSI with a non-tcp socket type and failed
> > (timeout after connection has been established).
> > Looking at the source, the reason is obvious: for sending data
> > (iscsi_send()), the function pointers from sock->sk are used via the
> > kernel socket API. This works well with non-tcp sockets. Howver, for
> > reading data (see callback handler iscsi_tcp_data_ready()),
> > tcp_read_sock() is used instead of the related kernel socket API call.
> Sounds good. Could you test out your solution and send a patch?
> If it tests out, I don't see why not.

We don't have a solution yet, just a problem...

> > Is there a specific reason for this? iSCSI would surely benefit from
> > using high-performance, non-tcp sockets if available (I'm talking
> > about SuperSockets in this case, 
> > seehttp://www.dolphinics.com/products/dolphin-supersockets.html).
> Sure sounds nice. If it is a simple and compatible change it sounds very good.

I haven't looked into it enough to claim it'll be a simple change. I
figure the iscsi recv code will change completely, but would be
simplified as we don't need to deal with the tcp buffer details etc.
when using a simple socket recv call, but it remains to be seen how
this affects compatibility, i.e. conc. partial or interrupted

It is not decided whether we allocate resources for this.


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