From: Nicholas Bellinger <nab@linux-iscsi.org>
Date: Thu, 7 Nov 2013 04:55:39 +0000 (-0800)
Subject: iscsi-target: Do not generate REJECTs for zero-length DataOUT
X-Git-Tag: v3.13-rc1~5^2~24
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=dbcbc95cd85854588ac80c0a6d98586fa2129418;p=pandora-kernel.git

iscsi-target: Do not generate REJECTs for zero-length DataOUT

This patch changes iscsit_check_dataout_hdr() to no longer generate
REJECTs for zero-length DataOUTs, and instead simply ignore these
requests.

This follows RFC-3720, Section 10.7.7.  DataSegmentLength

  "This is the data payload length of a SCSI Data-In or SCSI Data-Out PDU.
   The sending of 0 length data segments should be avoided, but initiators
   and targets MUST be able to properly receive 0 length data segments."

Reported-by: Santosh Kulkarni <santosh.kulkarni@calsoftinc.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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