- srpt_release_channel_by_cmid(): the sdev->spinlock and scst_mgmt_lock are
no longer locked nested.
- srpt_find_channel(): does now return NULL when the channel is not found
(which never happens).
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1432 d57e44dd-8a1f-0410-8b47-8ef2f437770f
iSCSI-SCST: A huge improvements in errors recovery and iSCSI RFC complaince as well as performance. Also:
- Fixes and improvements for MaxOutstandingR2T>1
- Flow control tracing added.
- Cleanups
SCST core:
- Now for scst_cmd_init_stage1_done() commands preprocessing_done() is always called before xmit_response(), even in case of abort or error.
- Fixed recently introduced bug, which can lead to sending responses for aborted commands after reply on the corresponding TM command already sent.
- Flow control tracing added.
- Now it is possible to call functions setting commands execution status (e.g., scst_set_cmd_error_status()) several times for the same command. Only the first call will be completed, other calls - ignored.
- All commands are counted and shown in proc/sysfs now. Before only active, i.e. not yet executed commands, were counted and shown there.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1431 d57e44dd-8a1f-0410-8b47-8ef2f437770f
- Removed references to SCST core internal state names.
- Does no longer accept new connections while unloading.
- Module unloading should now really no longer cause a hang.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1429 d57e44dd-8a1f-0410-8b47-8ef2f437770f
- Decreased number of target-to-initiator request send buffers from two
to one such that a clear error message can be printed when the SRP
initiator did not respond to the SRP_CRED_REQ information unit.
- Bug fix: don't modify ch->last_response_req_lim when sending an SRP
information unit that contains the REQUEST LIMIT DELTA field failed.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1424 d57e44dd-8a1f-0410-8b47-8ef2f437770f
- Bug fix: don't set the REQUEST LIMIT DELTA field to SRPT_RQ_SIZE when
sending the first reponse to the initiator but to the proper value
(a small integer).
- An SRP_CRED_REQ information unit is now sent to the initiator if the
number of I/O contexts available for receiving dropped below two I/O
contexts (see also the SRP standard for more information). This change
is required to fix the SRP initiator lockup that happens when the
initiator sends requests faster than the target can process them. In
order to fix the lockup, it is also necessary to implement SRP_CRED_REQ
support in the SRP initiator in the vanilla Linux kernel and in OFED.
Neither kernel version 2.6.32 nor OFED 1.5 nor any previous
version of these components supports SRP_CRED_REQ information units.
See also http://bugzilla.kernel.org/show_bug.cgi?id=14235 for more
information about the initiator lockup.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1423 d57e44dd-8a1f-0410-8b47-8ef2f437770f
document:
* For some Linux distro's the command iscsi-iname is installed in /usr/sbin
and for others in /sbin.
* The scst and scst_vdisk modules must be loaded before the sample scstadmin
commands work.
Signed-off-by: Bart Van Assche <bart.vanassche@gmail.com>
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1421 d57e44dd-8a1f-0410-8b47-8ef2f437770f
function scst_sysfs_cleanup() is declared as an exit-only function while it is
also called from init_scst(). The patch below fixes this section mismatch.
This patch has been tested by verifying that the following command does not
report any section mismatches:
make CONFIG_DEBUG_SECTION_MISMATCH=y scst iscsi-scst srpt
Signed-off-by: Bart Van Assche <bart.vanassche@gmail.com>
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1420 d57e44dd-8a1f-0410-8b47-8ef2f437770f
- Convert sense data to/from fixed format / descriptor format before
sending back a response.
- Print an error message to the kernel log when an unsupported IB event
has been received.
- Return the SCSI status BUSY instead of CHECK CONDITION when allocating
an SCST command failed (until r1409, the SCSI status in the SRP_RSP
information unit was set to TASK SET FULL in this case).
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1419 d57e44dd-8a1f-0410-8b47-8ef2f437770f
- Fixed: the SCSOLNT and UCSOLNT bits were ignored in received SRP requests,
and the SOLNT bit was not set in responses when required. This is required
by the SRP protocol specification.
- Fixed: SRP_RSP messages must be limited to the MAXIMUM TARGET TO INITIATOR
IU LENGTH field indicated in the SRP_LOGIN_RSP response instead of the
maximum message size supported by SRPT. This is also required by the SRP
protocol specification.
- Fixed: the STATUS field of response messages with status GOOD and that
contain sense data is no longer modified into CHECK CONDITION.
Internal changes (refactoring):
- Replaced the SCSI sense data handling data structures and code in SRPT by
those of the SCST core.
- Moved the code for building an error response from srpt_handle_cmd() and
srpt_handle_tsk_mgmt() to srpt_handle_new_iu().
- Removed the ioctx::data_len member.
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1416 d57e44dd-8a1f-0410-8b47-8ef2f437770f
the minus character in the following expression:
tgt_dev->curr_sn = (typeof(tgt_dev->curr_sn)) -300
git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@1407 d57e44dd-8a1f-0410-8b47-8ef2f437770f
