Firmware for QLA405x iSCSI HBAs Release Notes - QLogic

Firmware for QLA405x iSCSI HBAs
Firmware Version: 2.0.0.62
Supported HBAs: QLA4050, QLA4050C, QLA4052C
1. Overview
2. General Notes
3. Changes and Fixes
4. Known Issues
5. Trademarks
6. Notices
7. Additional Information
8. Contacting Support
Table of Contents
1. Overview
This document covers changes implemented between version 2.0.0.7 and 2.0.0.62 of the ISP4022 firmware
that supports the QLA4050, QLA4050C, and QLA4052C HBAs.
2. General Notes
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QLogic HBA drivers currently support up to 64 targets.
Configuring iSCSI in strict mode will enforce iSCSI RFC compliance.
3. Changes and Fixes
Between Versions 02.00.00.61 and 02.00.00.62
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Initiator only. Workaround for Solaris driver for future QLogic initiator HBA management software
enhancements to SendTargets discovery.
Between Versions 02.00.00.45 and 02.00.00.61
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Initiator only. Added firmware support for future QLogic initiator HBA management software
enhancements to SendTargets discovery.
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For the QLogic initiator HBAs, added support to reassemble Login and Text PDUs with the continue
flag set. The reassembly does not apply to passthru IOCBs, which the host must reassemble.
Changed discovery sessions to advertise a 16K or smaller MaxRecvDataSegmentLength. Maximum
total byte count when reassembling continuation PDUs is 64K.
Firmware for QLA405x iSCSI HBAs Release Notes 1 of 5

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Target only. Fixed a problem with received PDU counts in target connection mode for Login, Text,
Logout, and Task Management Request PDUs received with the Immediate flag set.
For the QLogic initiator HBAs, fixed parsing problem with large Text PDUs, such as SendTargets
responses.
Initiator only. Changed default ISID value for DDB Entries, so each port has a unique default ISID
value, based on the MAC address. Added code to upgrade existing DDBs that were configured with the
old default ISID, to use the new default ISID instead. DDBs with non-Default ISID values are
unchanged. The new Default ISID has the OUI format, with the QLogic OUI, and a 24-bit qualifier
whose least significant 21 bits match those in the port's MAC address, and most significant 3 bits are
reserved for MPIO.
Removed previous workaround for fiber link negotiation issue because the workaround caused link
issues.
Dropped polling timer from 100ms to 25ms in the firmware to catch retransmission scenarios which
need to be transitioned into New Reno.
The ISP40xx previously supported configuring DataPDUInOrder and DataSequenceInOrder. The
default configuration is No for both.
❍ With DataPDUInOrder, No permits the data PDUs within sequences to be in any order. Yes requires
the data PDUs within sequences to be at continuously increasing addresses; it forbids overlays.
❍ With DataSequenceInOrder, No indicates that Data Sequences (a sequence of Data-In or Data-Out
PDUs that end with F bit set to 1) may be transferred in any order. Yes requires the data
sequences to be transferred using continuously non-decreasing sequence offsets.
Prior to this fix, if the ISP40xx received data in any order, with non-increasing addresses or overlays,
the data would not be placed correctly into host memory.
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To fix this problem, changed the firmware to: (1) always set the firmware configuration to Yes for
DataPDUInOrder and DataSequenceInOrder (regardless of what the driver sets these values to via
the Initialize Firmware mailbox command 0060h, Set Device Database mailbox command 0063h, or
Flash) and (2) detect any out-of-order data PDUs and fail the corresponding CTIO Type 3 IOCB or
Command Type 3 IOCB back to the driver with a status error 0036h (PDU out of order).
Initiator only. Firmware was falsely generating an 0x8002 ASSERT when parsing a large SendTargets
response. This problem can occur during the parsing of a large Text PDU, such as a large
SendTargets response, which the firmware loads into a chain of multiple internal buffers. The
problem occurred after copying the final key=value from the last buffer in the chain. The firmware
freed the buffer and set its pointer to NULL, but then mistakenly attempted to validate some of the
fields in the buffer header using the NULL pointer. This fix modified the firmware to not make any
assertions after the buffer pointer has been set to NULL. The ASSERTs should only be performed on
active buffers.
Fixed an issue where SYN retransmit timers occurred too frequently. This issue was introduced in build
2.0.0.38 with the fix for ER46569.
Fixed a potential case that retained a buffer in target connection mode when the target driver closes a
new connection immediately after receiving an ATIO6 (for login command) and posting a CTIO6 (to
retrieve the login payload). This problem occurred while attempting to generate 128 simultaneous
logins with the sequence described above. In this case, the firmware stopped sending the
Connection Closed AEN indicating connection closure.
Removed iqBufStats flag for pendingRP, and changed code to check RP Count against the threshold
instead of checking the flag.
Fixed case where iscsi keepalive (nopin) timer wasn't getting reset when receiving a tcp-ack for a
datain pdu or scsi response pdu in target mode.
Near simultaneous ping requests on both ports exposed a timing window that prevented one of the
requests from completing. This fix causes the second request to return with a 0x4005 error since only
one request is allowed to be outstanding at a time.
Fixed a problem where a 0x4002 completion occurred on a mailbox command IOCB. This fix cleans up
semaphore handling between the request queue handler and the mailbox handler.
Firmware for QLA405x iSCSI HBAs Release Notes 2 of 5

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Fixed race condition in session mode where slowpath inbound PDUs (for example, NOP-outs,
TaskMgmtCmds, and TextCmds) may get processed out of order, causing the firmware to drop the
PDU because the cmdSN of the inbound PDU does not match the expCmdSN. Also fixed case (caused by
the above fix) where the firmware rejected a taskmgmt command by sending an iSCSI Reject PDU.
Fixed an issue where an initiator driver was getting transport errors and/or mailbox timeouts when
using host DSD lists due to firmware running out of internal RP structures. Modified firmware to preallocate
continuation RPs for host DSD lists. The RPs are pre-allocated when receiving a Cmd Type3,
CTIO3 with host DSD lists (instead of Continuation IOCBs) or a Passthru Type 1 IOCB from the host.
Initiator abortTask response may contain invalid mbox[1] value, causing the driver to misinterpret
mbox[2] and [3] as maxCmdSn and expCmdSn values.
If target session mode receives a taskmgmt command with the immediate flag set in the PDU header,
the firmware does not set the immediate bit in the ImmediateNotifyAck IOCB posted to the target
driver.
Initiator posting taskmgmt with immed.flag set may queue up the command forever and eventually
timeout. The change in 2.0.0.52 is a supplement to the 2.0.0.51 change. This change guarantees that
taskmgmt mailbox commands are sent in the same order as they are queued to the SCSI Request
Queue (when sent via mailbox IOCBs).
If we get a NULL local ncb on a create, load the NCB via the hash parameters for debugging.
Fixed an issue with improper results for ping command.
● Fixed an issue where the firmware hit an assert due to running out of buffers. This occurred in a
stress test environment when the initiator task had a lot of things queued up, which blocked other
tasks from running. The fix frees up the CPU in this scenario to allow other tasks to run on the
available resources.
● Fixed an issue that occurred when running I/Os between 2 ports and removing the cable for 5
seconds, then plugging it back in. The driver received a Status (Entry Type 3) IOCB with a completed
handle and no command (Entry Type 0x19) with that handle currently outstanding to firmware. A
mailbox IOCB completed incorrectly to the host as a status type 0 response, in handling a TKM
mailbox IOCB.
● Modified Flash Write mailbox command to allow up to 512KB when writing BIOS section (instead of
128KB previously).
● Fixed a return an error that occurred if the host issues a second ping mailbox command, while the
first ping request is still outstanding.
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Fixed an issue with Marvell Phy where the firmware was not properly negotiating to half duplex mode.
Cleaned up for ER46278 fixed in revision 2.0.0.32. Changed logic that could have given a false
positive.
Fixed an issue where the firmware stopped responding to the host after the ASIC received immediate
data which was not in a multiple of 4-byte lengths.
Fixed a problem introduced in build 2.0.0.47 with the fix for ER48078. The fix caused the Set Device
Database mailbox command to return a bad status in certain cases.
ATIO3 could have been posted to wrong host function in SNACK and error cases (for example, data
digest error or payload too large).
When DHCP server was unreachable, DHCP was failing at the rebinding phase resulting in lease lost.
Added intermediate completion option to ping. This will allow the ping mailbox command to return
immediately rather than waiting for a ping response.
Fixed AEN 8002 in target connection mode, which can occur if the target driver is in the process of
logging in the iscsi session (when the connection is up, but not logged in yet), and driver issues a
connection close mailbox command (0x56) to send a TCP-RST, followed by issuing another connection
close mailbox command (0x56) to send a FIN.
Handle mal-formed tcp options (with an invalid TCP Option length of 0 or a length larger than the
overall frame) on TCP SYN's.
Enabled Handle AHS spanning more than 64 bytes when digests.
FreeDDB mailbox command outgoing mailbox 4 register should return connState, not deviceState.
Firmware for QLA405x iSCSI HBAs Release Notes 3 of 5

Between Versions 2.0.0.19 and 2.0.0.45
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Enabled target and initiator iSCSI firmware tracing for field debugging purposes.
Changed code to preserve the VLAN when receiving ARP request.
Changed debug text in the IOCB to better indicate an IOCBs source (affects DEBUG firmware only).
● With TCP timestamps disabled, improved performance on connections that experience significant
packet loss on the network.
● Added support for booting over iSCSI using DHCP.
● Fixed a system error that could occur after receiving an unsolicited (or late) ping reply at the same
time the HBA was in the process of sending a ping request.
● Created a workaround for fiber link auto negotiation issues that occurred with certain optical
switches. Previously, some switches would not link properly to the HBA. The HBA would show a link,
but the switch would not.
● Fixed a problem where the initiator was not responding correctly to irrelevant iSCSI keys received
during discovery session login.
● Fixed a system error that occurred when the execution throttle was changed from 64 to 32 in the GUI.
● Added improved TCP retransmission handling when the remote node drops frames.
● Fixed a system error condition that occurred when DHCP lost its lease and then re-acquired another IP
address.
● Fixed a performance issue where issuing ping requests which timeout could affect iSCSI performance.
● Fixed a system error that occurred under certain situations when data queuing up in the firmware
because the iSCSI command window was closing on the other end.
● Detected a potential DMA malfunction due to an ASIC errata where the PCI power state changed from
D3 to D0 in the middle of a PCI-X outstanding split transaction.
● Fixed an issue where VLAN tagged multicast MAC packets were not forwarding to the network (NIC)
driver if the VLAN tag differed from the VLAN tag configured for iSCSI.
Between Versions 02.0.0.7 and 2.0.0.19
● Fixed a denial of service test case when the following occurred:
❍ Pings were sent to the QLA405x MAC address.
❍ The IP address was not for the QLA405x.
❍ A network driver was not installed for the QLA405x.
Previously, this case could eventually cause the HBA to reset.
● Fixed an issue where the iSCSI data bytes received count was not being properly incremented.
● Fixed problem where discovered targets were inheriting some values (for example, MaxBurstLength,
FirstBurstLength, InitialR2T, ImmediateData, DataSequenceInOrder and DataPDUInOrder)
incorrectly.
● Fixed a case where I/O timeouts could occur under heavy stress testing running traffic on both ports.
4. Known Issues
None
5. Trademarks
QLogic, the QLogic logo, QLA, SANsurfer, and SANblade are registered trademarks of QLogic Corporation.
SANtrack is a trademark of QLogic Corporation.
Windows is a registered trademark of Microsoft Corporation.
SANavigator is a registered trademark of McData Corporation.
Silkworm is a registered trademark of Brocade Communications Systems Inc.
All other brand and product names are trademarks or registered trademarks of their respective owners.
Firmware for QLA405x iSCSI HBAs Release Notes 4 of 5

6. Notices
Information furnished in this document is believed to be accurate and reliable. However, QLogic
Corporation assumes no responsibility for its use, nor for any infringements of patents or other rights of
third parties which may result from its use. QLogic Corporation reserves the right to change product
specifications at any time without notice. Applications described in this document for any of these products
are only for illustrative purposes. QLogic Corporation makes no representation nor warranty that such
applications are suitable for the specified use without further testing or modification. QLogic Corporation
assumes no responsibility for any errors that may appear in this document.
7. Additional Information
None
8. Contacting Support
Please feel free to contact your QLogic approved reseller or QLogic Technical Support at any phase of
integration for assistance. QLogic Technical Support can be reached by the following methods:
Web: http://support.qlogic.com
North America Contact Information
Email: support@qlogic.com
Phone: (952) 932-4040
Support contact information for other regions of the world is available at the QLogic website:
http://support.qlogic.com
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© Copyright 2007. All rights reserved worldwide. QLogic, the QLogic logo, and the Powered by QLogic logo are
registered trademarks of QLogic Corporation. All other brand and product names are trademarks or registered
trademarks of their respective owners.
Firmware for QLA405x iSCSI HBAs Release Notes 5 of 5