[ofa-general] RE: QoS for iSER

[Or Gerlitz]

Yevgeny,

iSER (as you can learn from doing a grep) is using the RDMA-CM TCP port
space as does RDS. The RDMA-CM signature is something which I am sure
exists, you can look on the RDMA-CM IB spec Annex to see if such thing
indeed exist or I am wrong. The TCP port is the 16 bit port portion of
the 
ip:port address provided by a ULP that uses the RDMA-CM to
rdma_resolve_addr(), again the annex explained how the port is embedded
into the SID, I don't remember the location within the 64 bit string.

Or. 

-------- Original Message -------- 
Subject: 
Re: QoS for iSER
Date: 
Mon, 12 Nov 2007 11:41:43 +0200
From: Yevgeny Kliteynik <kliteyn at dev.mellanox.co.il>

Hi Erez,

Erez Zilber wrote:
> to create the SID, the rdma cm combines
> 
> 1)       the port space

What is the port space for iSER?
For SDP it's 0x10000 - 0x1FFFF.
For RDS it's 0x1060000 - 0x106FFFF
For iSER it's ...?

> 2)       the rdma cm signature

Do you mean something iSER-specific, or just the way the cm
builds the service ID out of port space and tcp port?
Can you give an example?

> 3)       the destination tcp port provided to rdma_resolve_addr

I guess that tcp port is in the lower 4 nibs of the service ID,
similar to SDP. Right?

-- Yevgeny