[openib-general] [PATCH 6/6] [RFC] iser socket

[Caitlin Bestler]

openib-general-bounces at openib.org wrote:
> Christoph Hellwig wrote:
>>> + note that data is never moved on the socket via send/recv but
>>>   only by calls from iscsi_iser.c to
>>> iser_send_control/command/dataout
>>> + data originting/resuling in user space (eg login request/respose)
>>>   is moved down/up by open iscsi using netlink
> 
>> So what do the iser sockets do?  They look like noop stubs to me.
> 
> the iser sock sole real action is connect, see iser_sock_connect
> 
> Open iscsi expects the transport to support the following chain:
> 
> +1 create socket
> +2 connect the socket to the target
> +3 bind the socket to an iscsi connection enabling actual
> communication over this iscsi connection
> 
> so, we implemented the minimal set of operations (ie socket/connect)
> which will enable open iscsi to work transparently with the
> iser transport.
> 
> Or.

As indicated in my other reply, this is not consistent
with how iWARP connections are being done. The CMA
infrastructure, with IP semantics for IB addressing,
should be built upon here. There is no reason why
iSER connections should follow different logic than
RDMA connections.