SRP: Count field definition in data buffer descriptors.
rsnively at Brocade.COM
Tue Aug 21 10:19:32 PDT 2001
* From the T10 Reflector (t10 at t10.org), posted by:
* Robert Snively <rsnively at brocade.com>
At the teleconference on SRP, the following discussion item was
raised while reviewing document T10/01-230r1.
It was agreed that the format fields defined by table 2 would
be changed to indicate:
format code 0 = Buffer Descriptor not present
format code 1 = Direct data buffer descriptor present
(length shall be 16 bytes)
format code 2 = Indirect data buffer descriptor present
(length shall be n*4 + 5 words)
Doing this, the question was raised about the meaning of
the size field. For format code 0 and 1, the size is
fixed and need not be specified.
For format code 2, the size field could be either:
a) A count of the words (n*4+5)
b) A count of the bytes (n*16+20)
c) A count of the indirect buffer descriptor values (n)
The teleconferees felt that c was the best solution.
Does anyone disagree?
Bob Snively e-mail: rsnively at brocade.com
Brocade Communications Systems phone: 408 487 8135
1745 Technology Drive
San Jose, CA 95110
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