                              Release Notes
                        QLogic uIP Linux Driver
                            Version 0.7.8.5
                               11/20/2018

                          QLogic Corporation
                        26650 Aliso Viejo Pkwy,
                         Aliso Viejo, CA 92656

               Copyright (c) 2004 - 2013 Broadcom Corporation
                   Copyright (c) 2014, QLogic Corporation
                           All rights reserved

uIP v0.7.8.5 (Nov 20, 2018)
=======================================================
    Fixes:
    -------
      1. Problem: CQ102578: observing ISCSI initiator IP ping drop
         Change: 1. Do not flush tx queue on each uio interrupt
		 2. Use UIO BD index instead on buffer index.
		 3. Set buf_size in case of ICMP and ARP packet
         Impact: QL41xxx adapters

      2. Problem: CQ103034 - Unable to boot iSCSI BFS in IPv6 DHCP config
         Change: Limit retries of performing dhcpv6 before declaring dhcp failure
         Impact: All

      3. Problem: CQ102438: I/O fails to resume on multipath LUN during port toggle.
         Change: lib/cnic, lib/qedi, Release xmit_mutex in error code path and
                 during clear tx queue.
         Impact: QL84xx adapters

      4. Problem: Netlink buffer corruption when more than one host
		  try to xmit packet at the same time
         Change: Add inter-host mutex while doing xmit
         Impact: All

uIP v0.7.8.4 (Feb 22, 2018)
=======================================================
    Fixes:
    -------
      1. Problem: CQ95605: iSCSI BFS in DHCP config intermittently fails to boot
                  into the OS when source and destination addresses are in
                  different networks.
         Change: Allow ARP for non-matching source and destination addresses.
                 For source and destination IP addresses in different networks,
                 continue with the ARP retries and further login process
                 instead of assuming abrupt failure. iSCSI offload adapters
                 may not rely on netmask information for successful iSCSI
                 target login.
         Impact: All

uIP v0.7.8.3 (May 18, 2017)
=======================================================
    Fixes:
    -------
      1. Problem: CQ93985: iscsiuio seg faults if discovery done to not
                  reachable target
         Change: Serialize xmit_mutex lock to prevent iscsiuio seg fault.
         Impact: All

      2. Problem: CQ91497 - Initiator fails to acquire IPv6 DHCP address
                  from the DHCP server
         Change: Initialize the transaction-id within the dhcpv6 packet with
                 correct byte order, to fix the trans-id mismatch error.
         Impact: All

      3. Problem: Missing qedi ping transport hook
         Change: Add qedi ping transport hook
         Impact: 10/25/40/50GGbE Controller (iSCSI)

uIP v0.7.8.3 (Sept 28, 2016)
=======================================================
   Enhancements
   ------------
   1. Change: Add support for the new qedi transport
      Impact: 10/25/40/50GGbE Controller (iSCSI)

uIP v0.7.8.2 (Dec 10, 2013)
=======================================================
   Fixes
   -----
   1. Problem: Cont00072053 - Some hardware iSCSI paths fail during test
      Cause:   The test exercised a corner case where the ARP cache flush
               mechanism didn't work properly
      Change:  Fixed the ARP cache flush mechanism
      Impact:  All

   Enhancements
   ------------
   1. Change:  Added a new tx doorbell field in the uio path to work with
               the new bnx2x/cnic drivers that supports VF_RSS
      Impact:  10G only

   2. Change:  Fixed the iface.subnet_mask decoding for IPv6
      Impact:  IPv6


uIP v0.7.8.1b (May 01, 2013)
=======================================================
   Enhancements
   ------------
   1. Change:  Performance optimization by caching the page size
      Impact:  All

   2. Change:  Fixed a bug in the tx completion interrupt handler
      Impact:  10G only


uIP v0.7.6.1g (Jan 14, 2013)
=======================================================
   Fixes
   -----
   1. Problem: Cont00067316 - IPv6 address prefix length < 32
               bits fails to connect
      Cause:   CIDR notation has an order bug in the IPv6 section
               whenever the prefix length specified is < 32
      Change:  Fixed the network order bug
      Impact:  IPv6 only


uIP v0.7.6.1f (Nov 14, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00065768 - RHEL5.X iscsiuio segfault possible
               if there is a specific 1024 byte size broadcast
               packet
      Cause:   This is another corner case where the packet size
               is also exactly 1024 bytes + padding that exceeded
               the DMA rx buffer.  The previous fix was not
               sufficient
      Change:  Ensure that the packet size + padding do not
               exceed this limit.
      Impact:  10G only.  1G already has the guard against it.


uIP v0.7.6.1e (Nov 07, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00066397 - Unable to connect to iSCSI target
               with NPAR enabled on 57840
      Cause:   The PCI device ID for 57840_MF has been changed from
               0x16ab to 0x16a4
      Change:  Updated the PCI id table to match exactly what the
               bnx2x 1.76 indicates
      Impact:  57840 MF


uIP v0.7.6.1d (Oct 31, 2012)
=======================================================
   Enhancements
   ------------
   1. Change:  Added support for open-iscsi-2.0.873
      Impact:  All


uIP v0.7.6.1c (Oct 15, 2012)
=======================================================
   Enhancements
   ------------
   1. Change:  Added support for 10G 57840 4x10 and 2x20
      Impact:  10G 57840


uIP v0.7.6.1b (Oct 09, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00065690 - Vconfig method of connecting over
               tagged vlan with IPv6 failed
      Cause:   The new net param support changes has prevented
               the old vconfig method from execising the IPv6
               acquisition engine properly
      Change:  Ensure that this old vconfig method to run the IPv6
               acquisition engine properly and to its entirety
      Impact:  IPv6 + VLAN using the network VLAN configuration
               method

   2. Problem: Cont00065768 - RHEL5.X iscsiuio segfault possible
               if there is a specific 1024 byte size broadcast
               packet
      Cause:   This is a corner case where the packet size is
               exactly 1024 bytes + padding that exceeded the
               DMA rx buffer.  This has been there since day 1.
      Change:  Ensure that the packet size + padding do not
               exceed this limit.
      Impact:  10G only.  1G already has the guard against it.


   Enhancements
   ------------
   1. Change:  Source optimization - backported source code fixes
               as reported from the upstream submission patch
      Impact:  ALL


uIP v0.7.4.2k (Aug 10, 2012)
=======================================================
   Enhancements
   ------------
   1. Change:  Enable HP SD mode
      Impact:  577XX/578XX


uIP v0.7.4.2j (Jul 18, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00064665 - Linux iSCSI connects via gateway address
               on the wrong subnet
      Cause:   The gateway address used was not checked against the
               subnet mask specified before the ARP requests.  Since
               this behavior deters from how L2 operates, therefore,
               a change was made to correct this.
      Change:  Added check of the gateway specified against the subnet
               specified.
      Impact:  Static IPv4 operation

   2. Problem: Cont00064722 - Linux iSCSI unable to force IPv6 LL
               override (advanced iface parameters)
      Cause:   The override LL address was not being populated to the
               IPv6 address database correctly
      Change:  Added this correctly to the IPv6 initialization
      Impact:  Static/DHCP IPv6 LL address override only


uIP v0.7.4.2i (Jul 11, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00064604 - Fails to connect to routed IPv6 target
               via RA
      Cause:   The default router IPv6 address was not being retrieved
               correctly.
      Change:  Fixed the default router IPv6 address read
      Impact:  All


uIP v0.7.4.2h (Jun 15, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00063863 - can't boot into offload image
               when VLAN is enabled
      Cause:   During the iSCSI login exchange, certain iSCSI targets
               will send an ARP request even though the TCP connection
               has been made.  The bug was in this ARP reply where
               the local MAC was corrupted when VLAN is enabled.
      Change:  Fixed the ARP reply packet
      Impact:  All


uIP v0.7.4.2g (Jun 08, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00063816 - The initiator is not able to connect
               to the iSCSI targets over VLAN
      Cause:   The process packet routine did not consider the PCP
               of the VLAN tag to be non-zero.  This created a
               mismatch when this VLAN tag was compared against the
               nic_iface->vlan_id which doesn't include the PCP.
      Change:  Added the consideration of non-zero PCP
      Impact:  All


uIP v0.7.4.2f (Jun 04, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00063626 - Static IPv6 does not connect when
               the prefix len is not set explicitly
      Cause:   The IPv6 prefix length was not set correctly
               for Static IPv6 operation when CIDR notation is
               not specified
      Change:  Fixed the default prefix length
      Impact:  Static IPv6

   2. Problem: Cont00063651 - Cannot connect to iSCSI targets
               HP PTM/SF
      Cause:   Switch-Dependent mode + invalid Outer VLAN was
               not supported
      Change:  Allow SD+invalid OV to fallback to SF operation mode
      Impact:  5771X/578XX


uIP v0.7.4.2e (May 30, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00063443 - Compilation error on SLES11sp1
      Cause:   The iface_num field was not defined
      Change:  Fixed all references to iface_num
      Impact:  SLES11sp1

   2. Problem: Cont00063518 - HBA fails to connect across router
               using iface.gateway address
      Cause:   The gateway override code did not populate the
               address into the lower level engine
      Change:  Fixed the gateway override code
      Impact:  IPv4 Static IP operation

   3. Problem: Cont00063567 - IPv6 LL and RA override does not work
      Cause:   The IPv6 LL/RA override addresses were overwritten
               by the NDP engine
      Change:  Fixed the LL/RA override code
      Impact:  IPv6 operation

   Enhancements
   ------------
   1. Added support for jumbo MTU (independent from the L2 MTU)


uIP v0.7.4.2d (May 21, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00063421 - Static IPv6 cannot connect via RA/LL
      Cause:   The router advertise and the linklocal address
               were corrupted due to the override capabilities
               added for the newer open-iscsi util
      Change:  Fixed the address override code
      Impact:  Static IPv6

   Enhancements
   ------------
   1. Allow VLAN tag = 1 (router management) to connect offload


uIP v0.7.4.2c (May 09, 2012)
=======================================================
   Fixes
   -----
   1. Problem: RHEL BZ 734010/804580 - issues found by the Coverity
               scan
      Cause:   10 code issues were flagged for revision
      Change:  Fixed all area of concern
      Impact:  All

   2. Problem: Cont00063177 - IPv4 DHCP with VLAN specification in
               iface file gets wrong address
      Cause:   The DHCPv4 handler was not discriminating the VLAN tag
               associated with the DHCP offers from multiple DHCP
               servers
      Change:  Changed the DHCPv4 handler to drop DHCP offer packets
               that doesn't match the VLAN tag of the intended DHCP
               discovery packet
      Impact:  DHCPv4 operation


uIP v0.7.4.2b (May 01, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00062993 - IPv6 DHCP with VLAN specification in
               iface file gets wrong address
      Cause:   The DHCPv6 request was using the same DUID as always
               so the non-VLAN DHCP server responded to our broadcast
               instead
      Change:  Changed the DHCPv6 request DUID to link address + time
               instead of link address alone
      Impact:  DHCPv6 operation


uIP v0.7.4.1j (Apr 24, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00062805 - Cannot login to iSCSI targets on RHEL6.3
      Cause:   The problem was caused by a change made to the iface_rec
               structure in the RHEL6.3 inbox open-iscsi util
      Change:  The new changes is now incorporated
      Impact:  All


uIP v0.7.4.1i (Apr 16, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00062660 - Unable to login with VLAN iscsiuio
               on RHEL6.2
      Cause:   The open-iscsi util in RHEL6.2 has a bug which
               does not pass the correct iface_num to iscsiuio
      Change:  Added workaround to fall back to do the legacy
               VLAN support if iface_num and vlan_id = 0
      Impact:  RHEL6.2


uIP v0.7.4.1h (Apr 13, 2012)
=======================================================
   Enhancements
   ------------
   1. Added support for the new iface_num field in the iscsi_uevent
      path

   2. Fixed bug in the nic_iface search engine based on iface_num


uIP v0.7.4.1g (Mar 22, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00061869 - Unable to setup an offload iSCSI
               connection with FLR/NPAR under ESX5.0:PDA
      Cause:   The physical function ID was previously extracted
               from the sysfs of the VM which might not be consistent
               to the actual physical setup due to the function
               remapping in the hypervisor
      Change:  Read the physical function ID directly from the BAR0
               ME register
      Impact:  All

   2. Problem: Cont00062170 - IPv6 login/logout stress fails
      Cause:   The packet interrupt was lost after running the test
               for a much longer period of time.  A bug in the
               packet processing routine was found to exit prematurely
      Change:  Fixed the packet processing routine to process all
               packets before exiting
      Impact:  All


uIP v0.7.4.1f (Mar 19, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00062170 - IPv6 login/logout stress fails
      Cause:   The packet buffer routine for IPv6 did not take
               network order <-> host order into consideration
      Change:  Added a htons call to compensate for the ntohs pair
      Impact:  All


uIP v0.7.4.1e (Mar 08, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00061978 - Load/unload stress test fails
      Cause:   The bnx2x open request was failing due to the module
               request procedure.  However, the open failure was
               not being handled correctly.
      Change:  Fixed the device open error handling
      Impact:  5771X/578XX


uIP v0.7.4.1d (Mar 02, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00061708 - Unable to log into target after running
               driver load/unload
      Cause:   A bug was introduced in the previous bug fix (CQ61459)
               where a pthread_cond_broadcast call was erroneously
               enabled
      Change:  Restored this back
      Impact:  All


uIP v0.7.4.1c (Feb 16, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00061529 - Unable to connect to target after an
               initial failed login attempt until iscsi service is
               restarted
      Cause:   Upon a failed DHCPv4 acquisition due to the wrong VLAN
               tag in the initial iface setup, any iscsid connect request
               from the same NIC will get dropped due to a bug.
      Change:  Fixed the bug which prevented new iscsid connect requests
               from getting honored
      Impact:  All

   Enhancements
   ------------
   1. Updated README


uIP v0.7.4.1b (Feb 08, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00061513 - Unable to connect to target over VLAN
               interface
      Cause:   The VLAN id was not properly passed back to the CNIC
               driver for the offload request
      Change:  Fixed the VLAN id being passed back to the CNIC driver
      Impact:  All


uIP v0.7.4.1a (Feb 01, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00049383 - No mechanism in iface file to support
               gateway/routing
      Change:  Added support for the additional network parameters
               as passed from the newer iscsi-util.
               These parameters include:
               IPv4: subnet_mask, gateway
               IPv6: ipv6_linklocal, ipv6_router,
                     ipv6_autocfg, linklocal_autocfg, router_autocfg
               VLAN: vlan_id, vlan_priority, vlan_state
               Other: mtu, port
      Impact:  All

   2. Problem: Cont00060806 - Unable to connect target using DHCP over
               tagged VLAN
      Change:  DHCP+VLAN is a new feature enhancement that was added
               alongside all other new iface parameters.
      Impact:  All


   Enhancements
   ------------
   1. Lock iscsid's connect request with path_req so connect requests
      with DHCP/Static will no longer override each other

   2. Fixed the if_down handler from global to nic specific

   3. Fixed various synchronization issues


uIP v0.7.2.1e (Jan 05, 2012)
=======================================================
   Fixes
   -----
   1. Problem: Cont00060734 - ifupdown-mtu change stress with active
               session causes iscsiuio to fail
      Change:  Fixed a race condition between the nic enable thread
               and when DHCP fails
      Impact:  All


uIP v0.7.2.1d (Dec 28, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00060368 - segfault observed after failing both
               mpio paths
      Change:  Various memory leaks were identified and resolved in
               the nic cleanup path
      Impact:  All


uIP v0.7.2.1c (Dec 16, 2011)
=======================================================
   Enhancements
   ------------
   1. Change:  Disable HP SD mode


uIP v0.7.2.1b (Dec 14, 2011)
=======================================================
   Enhancements
   ------------
   1. Change:  Default iscsiuio logging to off.  Use the '-d'
               option to enable


uIP v0.7.0.14g (Oct 25, 2011)
=======================================================
   Enhancements
   ------------
   1. Change:  Fixed the compilation under RHEL6.2
   2. Change:  Added oom_adjust call to prevent OOM Killer from killing
               iscsiuio when memory is low
   3. Change:  Added mlockall setting to prevent page swap


uIP v0.7.0.14f (Oct 20, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00058994 - DOS vulnerability in uip during UDP flood
      Cause:   The warning messages from the UDP handler was logging
               at a rate faster than the log file logrotate rate
               Therefore, the system's OOM eventually got kicked in to
               start terminating running processes which includes iscsiuio
      Change:  Moved several UDP warning messages from the default log
               level to the debug log level
      Impact:  All (minor)

   2. Problem: Cont00059288 - Show segfault w/ SLES11 SP1 Xen kernel
      Cause:   The bnx2x chip_id was not read correctly from the PCIe BAR1
               under the Xen kernel.  The error was in the mmap area.
      Change:  Corrected the mmapping of the PCI MMIO space.
      Impact:  Xen kernels

   Enhancements
   ------------
   1. Change:  Changed the log file open error to a warning and let
               the daemon progress.  This was only observed under iSCSI boot


uIP v0.7.0.14e (Sep 19, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00058678 - Can not iboot target from ipv6 path
               using VLAN
      Cause:   A bug was found in the path request path where the vlan
               iface's protocol family was not used correctly in the
               iface search
      Change:  This has been corrected


uIP v0.7.0.14d (Sep 16, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00058602 - Can't iboot using IPv6 offload path
      Cause:   The bug was exposed by a fix in 0.7.0.14c where the
               IPv6 router solicitation timeout exceeded the nic
               enable thread timeout.
      Change:  The IPv6 router solicitation timeout has been adjusted


uIP v0.7.0.14c (Sep 01, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00058256 - Sessions fail after loginstress to via
               simultaneous ipv4 and ipv6 dhcp
      Cause:   Switching between DHCPv4/v6 coupled with VLAN exposed
               a drawback in our nic_iface architecture design where
               VLAN is not specified by iscsid.
      Change:  The code was optimized and improved the performance when
               switching between DHCPv4/v6+VLAN.  However, the ultimate
               fix is to make use of the net config parameters introduced
               in the newer open-iscsi util which will identify the
               specific VLAN nic_iface to use.

   Enhancements
   ------------
   1. Change:  Added support for bnx2x-1.71.00


uIP v0.7.0.14b (Aug 23, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00057840 - RHEL6.2 inbox: Unable to connect to
               targets with 5709
      Cause:   For cases when the bnx2/bnx2x driver gets removed, the
               uio database that was built by cnic would have the device
               ->net reference removed.  This has caused an unnecessary
               timeout of 5s for each stale uio entry in the database.
      Change:  Adjusted the routine which seeks the device->net entry
               to include more logic instead of hard waiting for 5s.

   Enhancements
   ------------
   1. Change:  Added support for RHEL6.2 for out-of-box release
   2. Change:  Updated the man page with -h and -p info
   3. Change:  Updated the -h info


uIP v0.7.0.13 (Aug 10, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00057768 - iscsiuio logrotate causes daemon failure
      Cause:   The logrotate script will send a SIGUSR1 signal to notify
               the iscsiuio daemon of such action.  However, the daemon
               wasn't programmed to catch this signal.
      Change:  Restored the catching of this signal


uIP v0.7.0.12 (Aug 04, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00050634 - brcm_iscsiuio Tainted: running IoZone,
               Iometer and receiving a UDP flood on 3260
      Cause:   Upon iscsiuio termination, because of the UDP flood,
               the nic thread will be busy servicing those UDP packets
               while the signal handling thread will free up all nic
               resources.  The two threads were not in sync.
      Change:  Added a nic_remove_all routine to destroy all nic threads
               before the nic resources get freed.

   Enhancements
   ------------
   1. Change:  Fixed all warnings as reported by RHELS' Coverity testing.


uIP v0.7.0.11 (Aug 02, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Erroneous VLAN tag was being passed by iscsid for connect
               request
      Cause:   The iscsid's iface_rec_t ipc message does not contain this
               vlan field.  This field was added in uIP for future vlan
               support.  Since the buffer allocated to receive such message
               in uIP didn't get initialized, therefore, garbled up VLAN
               tag was getting used.
      Change:  Added the initialization of this buffer.


uIP v0.7.0.10 (Jul 26, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Can't offload when switching from Static to DHCP then back to
               Static IPv4 when connecting through a VLAN interface
      Cause:   The VLAN processing code did not reinstall the IP address
               from the default nic_iface to the associated VLAN nic_iface.
               This was only done on the very first time when the VLAN
               interface was created and not on subsequent instances.
      Change:  Added code to mirror the default nic_iface IP/netmask/ip_config
               on the VLAN nic_iface on every new connection request.


uIP v0.7.0.9 (Jul 19, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Can't offload to 57810 NPAR NIC
      Cause:   The MF/VF variant of the PCI IDs were not supported previously
      Change:  Added support for the MF/VF variants for 57800/57810/57840


uIP v0.7.0.8 (Jun 30, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00056522 - Unable to connect to iSCSI target using
               netxtreme2 package 7.0.9
      Cause:   The iSCSI L2 ring's CID has changed from 17 to 49
      Change:  The code now gets L2 iSCSI ring CID from the l2_buf directly.
               This will work with any version of the cnic driver because
               the location is a zero before this change.


uIP v0.7.0.7 (Jun 23, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00056460 - iSCSI Offload boot RHEL5u5 x64 dropped tagged
               packets with iSCSI Offload Boot with untagged
      Cause:   The ICMP echo replies to the target was corrupted in both
               1g and 10g mode
      Change:  The code will now handle both VLAN stripped and no VLAN stripped
               incoming packets correctly.  Also modified the transmit routine
               to strip out any inline VLAN tag before setting up the hw to
               insert VLAN tag.


uIP v0.7.0.6 (Jun 21, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00056231 - DHCPv4 not working with iSCSI HBA w/
               linux-nx2 v7.0.7
      Cause:   The 10g L2 FW HSI has been modified for PCIe performance
               enhancement in the 7.0.7 package (FW 1.70.20) which uIP
               has not adapted to.
      Change:  The eth_rx_cqe size has been increased from 32B to 64B.

   Enhancements
   ------------
   1. Change:  The utility name has changed from brcm_iscsiuio to iscsiuio
               as preparation for upstream submission.
   2. Change:  Updated README


uIP v0.7.0.5 (Jun 02, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00055915 - iSCSI does not connect on 57800 in 4-port mode
      Cause:   The 4-port mode was not being determined correctly
      Change:  Fixed the PORT4MODE register offset and the QZONE_ID macros


uIP v0.7.0.4 (May 24, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00055832 - linux iscsiboot can not login to target using
               offload path (57800)
      Cause:   The device ID comparison routine did not take care of the case
               when one device ID is bitwise superset of another.
      Change:  Fixed the device ID comparison routine.


uIP v0.7.0.3 (May. 19, 2011)
=======================================================
   Enhancements
   ------------
   1. Change:  Updated all fixes to match the released uIP 0.6.4.17

   2. Change:  Modified source and Copyright info as preparation for upstream
               submission


uIP v0.7.0.2 (May. 03, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00048972 - brcm-iscsi.log has no max size and would grow
               to consume all free space on hard disk
      Cause:   There was no mechanism to rotate the log
      Change:  Added logrotate entry and SIGUSR1 signal handling for log rotate
               action

   2. Problem: Cont00054996 - Multi-session, multi-protocol mtu stress
               does not recover all sessions
      Cause:   A segfault was observed during the load/unload module.  The
               problem was caused by an illegal dereference of a pointer
               when IPv6 couldn't find the longest match address from
               the ARP (Neighbor) table.
      Change:  Fixed the dereferencing error

   3. Problem: Cont00054900 - Linux uIP - Please add ability to connect
               to routed target with static iface IPv6
      Cause:   Static IPv6 never runs the IPv6 NDP router sol/adv engine.
      Change:  IPv6 NDP router sol/adv has now been added to static IPv6
               operation.

   4. Problem: Cont00054996 - Multi-session, multi-protocol mtu stress
               does not recover all sessions
      Cause:   Segfaults were observed caused by the accessing of the IPv6
               NDP structure while the nic is undergoing a reset either
               due to a DHCPv4 request from iscsid or the handling of
               if_down due to the NL handler from CNIC.
      Change:  The fix involves the following:
               - Fixed the handling of staggered IPv4/v6 DHCP/static requests
               - Fixed memory leak due to reallocation of IPv4 and IPv6
                 DHCP structs
               - Fixed the pthread join stuck problem in the handling
                 of the if_down NL message

   5. Problem: Cont00054810 - Linux NMI - bnx2x_init_hw_common:PXP2 CFG
               failed running iSCSI MTU stress test
      Cause:   This only happens in DHCPv4 mode.  The problem was caused
               by contention between the elongated window of performing
               DHCP in the enable_nic thread while receiving the asynchronous
               if_down NL message (from the MTU change event) from the
               CNIC NL thread.  The problem occurs when the enable_nic
               thread tries to call bnx2x_open while the other thread
               calls the bnx2x_close routine.
      Change:  Fixed mutex lock bugs for the enable_nic thread.  Also
               extended the nic_disable timeout to 10s to compensate for
               the DHCP operation.

   6. Problem: Cont00054818 - RH6.0 - Unable to logout of iSCSI session
               after running PQA baseline scripts
      Cause:   This was caused by the call to cancel the enable_nic
               thread when disabling the nic but failed to unlock the
               nic mutex that the enable_nic thread held.
      Change:  Wake up the enable_nic thread and wait for it to complete
               instead of canceling it in the nic_disable path.

   7. Problem: Cont00054725 - Previous static HBA IP will be used after
               a new static HBA IP has been created
      Cause:   There was an assumption in the code where if the same
               nic_iface structure was found based on the nic/vlan pair,
               the specified IP address would not be used.  Instead, it
               will continue to use the previous defined IP address.
      Change:  The previous IP address will now be compared against the
               the specified IP address before finishing the parce
               iface request from iscsid.  If different, the current
               nic will be disabled and then re-enabled with the newly
               specified IP address.

   8. Problem: Cont00054571 - Unable to connect to routed ipv6 target
               with RA address and iface DHCPv6
      Cause:   The default router address was not being employed for
               the IPv6 neighbor negotiation.  Additionally, the return
               address of our neighbor advertisement was incorrect as
               it should use the best matched src address instead.
      Change:  Fixed both the IPv6 neighbor solicitation and advertisement
               transmission and handling.

   9. Problem: Cont00054510 - fails to login to 32 session with blanket
               login IPv6
      Cause:   A bug was introduced in uIP 0.6.4.6 where the NIC_RUNNING
               flag might not be set when entering the main loop under
               certain situations depending on the nic bring up.
      Change:  A new NIC_STARTED_RUNNING flag is now defined to fix CQ53511.

  10. Problem: Cont00053807 - RA and link local are unable to connect if DHCPv6
               fails
      Cause:   The host link local address was not being searched as one of
               the host address to be replied to CNIC for the connect request.
      Change:  The path reply now includes the search of host link local
               address as well.

  11. Problem: Cont00054236 - iSCSI service must be restarted before an IPv6
               connection can be made to the Equalogic target
      Cause:   The problem was intermittent as it depends on which IPv6 address
               the target was redirecting to.  Since uIP was only extracting
               the target's IPv6 address + MAC from the target's neighbor
               advertisement packet itself and not from the ICMPv6 option, so
               the wrong or no MAC address will get send down to CNIC for the
               connection establishment; hence the no connect.
      Change:  Added the updating of the neighbor discovery table to also use
               the Target IPv6 address + MAC specified in the incoming neighbor
               advertisement's ICMPv6 option field.

  12. Problem: Cont00053255 - bnx2x panic dump logging into multiple
               discovered IPv6 nodes (Equalogic IPv6 target)
      Cause:   The bnx2x panic was fixed in the 10g fw 6.4.29.
               A IPv6 connectivity issue was then found and led to different
               kernel/uIP crashes.  This was caused by the same IPv6
               connectivity problem mentioned above.
      Change:  Same as above

  13. Problem: Cont00053728 - Sessions never recover after doing initiator-side
               cable pull test with IPv6 traffic against Equalogic targets
      Cause:   It was discovered that the Equalogic would send out periodic
               neighbor solicitation to maintain the connection to the
               initiator.  Since uIP was responding with the assigned IPv6
               link local address in the neighbor advertisement
               unconditionally, the target was observed to stop transmitting on
               the connection specified.
      Change:  The neighbor advertisement generated will now use the dst IPv6
               address from the input neighbor solicitation packet instead of
               the assigned IPv6 link local address for both the packet and the
               ICMPv6 source IPv6 address.

  14. Problem: Compile error under 32-bit OS
      Cause:   A bug was introduced in the previous release 0.6.4.6 which
               caused a compilation error in 32-bit OS (64-bit compiles
               fine)
      Change:  Fixed the bug

  15. Problem: Cont00053807 - RA and Link local are unable to connect if dhcpv6
               fails
      Cause:   There was a bug in the nl reply where the RA address will never
               be sent back to CNIC for the connection request
      Change:  The best matched address to the dst will now be sent back to
               CNIC in the path rsp.

   Enhancements
   ------------
   1. Change:  Updated README to remove the 57713/E references

   2. Change:  Allow the ICMP option field in the IPv6 Neighbor Advertisement
               response to be included without discrimination.  This fixes
               an issue connecting against the EQL via RA for DHCPv6.

   3. Change:  Updated README for the IPv6 operation, VLAN, and discovery.


uIP v0.7.0.1 (Mar. 29, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00053511 - bnx2x panic dump during ifup/down stress with
               iSCSI traffic
      Cause:   The panic dump was resolved by the driver's rq dbell size fix.
               After that, uIP crashed due to the asynchronous if_down event
               that took the chip resources away while the nic thread is still
               continuing to try to send DHCP request.
      Change:  Added synchronization between the two threads so proper clean up
               of the threads can occur.

   Enhancements
   ------------
   1. Change:  Added support for E3 (57800, 57810, and 57840)


uIP v0.6.4.5 (Mar. 23, 2011)
=======================================================
   Enhancements
   ------------
   1. Change:  Optimized the double VLAN fix of CQ53870 to match
               what will be submitted for RHELS5.7 and RHELS6.1 inbox


uIP v0.6.4.4 (Mar. 17, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00053870 - Unable to login to iSCSI target via offload
               through a Nexus 5020 switch with DCBx enabled
      Cause:   Double VLAN tagging was observed due to DCBx enabled.
               The chip actually adds a VLAN tag if the txbd does not have
               VLAN tag enabled under the DCBx environment for PRI setting.
               Since uIP does not make use of hw assisted VLAN tagging,
               2 VLAN tag was observed in the data stream.
      Change:  Enabled hw assisted VLAN tagging in uIP for both 1g and 10g.

   2. Problem: Cont00053792 - maxconnections intermittently fail and
               recover using iface DHCPv4
      Cause:   The DHCPv4 engine erroneously keeps on requesting for a
               new lease which tremendously hamper normal path_req
               operation.  The problem is that the lease time parameter
               has overflowed when converted to ticks count.
      Change:  Expanded the lease timer ticks count parameter from 16 to
               32 bits.

   3. Problem: Cont00053807 - RA and link local are unable to connect if
               DHCPv6 fails
      Cause:   The DHCPv6 engine does not have the failover to use RA
               mechanism
      Change:  Expanded to use best match address instead regardless of
               DHCPv6 success or not, or using static v6.

   Enhancements
   ------------
   1. Change:  Cont00051823 - Added man page for brcm_iscsiuio


uIP v0.6.4.3 (Mar. 15, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00053719 - intermittent logging into targets that
               are not in the same subnet as defined in the iface
      Cause:   The default route was used erroneously due to a miscompare
      Change:  Fixed this comparison so if the requested dst is not in
               in the same subnet, uIP would not even ARP out.

   2. Problem: Cont00053580 - Unable to do iSCSI boot into Linux OS using
               57710 adapters
      Cause:   The E1 iro USTORM_RX_PROD_OFFSET doesn't match the t6.4 fw
      Change:  This is now fixed


uIP v0.6.4.2 (Feb. 24, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00050343 - HBA does not follow RFC2131 spec for IPv4
               DHCP lease expiration
      Cause:   The dhcp engine did not have this feature implemented
      Change:  Added lease time tracking and renewal

   2. Problem: Cont00050801 - Unable to connect to target after switching
               between DHCPv4 to static v4
      Cause:   The configuration flags got corrupted when switching between
               dhcp and static or vice versa.
      Change:  Fixed the flag handling.  Also needed to zero out the static
               ip address in the host memory when switching to dhcp.
               Otherwise, the static ip address will get used mistakenly.

   Enhancements
   ------------
   1. Change:  Cont00051936 - Added IPv6 NDP and DHCPv6 support.


uIP v0.6.4.1 (Jan. 27, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00049766 - segfault seen while stopping iscsi service
      Cause:   The logger output routine was accessing the log resource
               while another thread calls fini_logger to free the same
               resources
      Change:  Added pthread mutex lock to the logger routine to exclude
               the initializer, user, and finisher

   Enhancements
   ------------
   1. Change:  Added new t6.4 HSI and 57713 support.


uIP v0.6.2.13 (Jan. 04, 2011)
=======================================================
   Fixes
   -----
   1. Problem: Cont00049665 - iscsiboot:linux failed to boot into iscsi
               boot image in offload path after 5 iterations
      Cause:   The hw consumer index for the uIP ring got out of sync
               with the producer index.  This has led to the xmit mutex
               lock be held forever so subsequent ARP requests will not
               get transmitted to the wire
      Change:  Added this out of sync detection and rescue the xmit mutex
               lock

uIP v0.6.2.12 (Dec. 21, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Cont00051820 - Session fails to reconnect after gateway
               fallback
      Cause:   Under the HSRP test scenario, it was found that an ARP
               request from the SUT is required in order for the HSRP
               router to begin sending packets downstream to the SUT.
               The default ARP age was originally set to 20 minutes
               before a new ARP request will get sent,
      Change:  Changed the ARP age default to Linux default at 5 minutes

uIP v0.6.2.11 (Dec. 17, 2010)
=======================================================
   Fixes
   -----
   1. Problem: For IPv4, the gateway route was not being utilized
               when the subnet mask given or calculated does not
               match.  This resulted in many unwanted connection
               attempts.
      Cause:   A bug was found in the default gateway calculation
               logic which prevented the gateway address from being
               used.
      Change:  Fixed the default gateway logic

   2. Problem: For IPv6, there are scenarios where it won't connect
      Cause:   The IPv6 subnet mask as extracted from the CIDR
               format might contain garbage data.  This garbage data
               was then used as part of the subnet mask which would
               prevent the correct address mask.
      Change:  Fixed the subnet mask

uIP v0.6.2.10 (Dec. 15, 2010)
=======================================================
   Fixes
   -----
   1. Problem: IPv6 does not connect for non-CIDR iface.ipaddress
               specification
      Cause:   A bug where all ones was used as the IPv6 netmask
               instead of all zeroes.  This prevented all IPv6
               path requests from being honored
      Change:  Fixed the subnet mask used

uIP v0.6.2.9 (Dec. 14, 2010)
=======================================================
   Enhancements
   ------------
   1. Change:  Added IP address CIDR notation support for the
               iface.ipaddress field in the iface file.
               This will allow subnet mask to be defined and used.

uIP v0.6.2.8 (Dec. 9, 2010)
=======================================================
   Fixes
   -----
   1. Problem: ipv6 + ifup/down fails to reconnect

      Cause:   There were 2 problems found:
               - the xmit_mutex lock was being held indefinitely
               - the nl_process_if_down flag for 10g doorbell ringing
                 did not get reinitialized

      Change:  Fixed the xmit_mutex deadlock via trylock
               Added nl_process_if_down initialization in the IF_DOWN
               process

   2. Problem: Added fix for the NPAR disabled for 57712

      Cause:   The mac address was not handled correctly

      Change:  Fixed the mac address handling.  Also requires corresponding
               kernel component for the complete fix

uIP v0.6.2.7 (Dec. 7, 2010)
=======================================================
   Enhancements
   ------------
   1. Change: Use the gateway address from the DHCP server the
              destination IP address is not in the current subnet.

uIP v0.6.2.6 (Nov. 16, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Warning message seen in the kernel logs,
               "uio uio2: uevent: unsupported action string"

      Cause:   The improper string was echo'ed into the UIO trigger
               field.  With an improper string, this message would
	       appear in the kernel logs.

      Change:  uIP will now write the string "online" to the UIO
               trigger field.  This is the string expected by the
	       Linux kernel base driver.

   2. Problem: uIP would segfault during a heavily login/logout
               iSCSI subsystem reset senario

      Cause:   A double free occurred in the logging portion of the
               uIP code, but this was root cause to a double free when
	       manipulating the NetLink buffers.

      Change:  Properly look at the return code from the routine which
               will read NetLink messages.  Also only free buffers
	       if they are allocated.

   Enhancements
   ------------
   1. Change: Add ability to print kernel version and machine
              architecture to further help debug problems.

   2. Change: Apply the netmask from DHCP if provided.

uIP v0.6.2.5 (Nov. 10, 2010)
=======================================================
   Fixes
   -----
   1. Problem: iscsid would try to conenct with unintended iSCSI
               targets

      Cause:   uIP would blindly return the iSCSI target MAC address
               regardless if the iSCSI target is reachable via the
	       given port.

      Change:  uIP will try to filter the requests coming from CNIC
               by automatically generating a network mask based off
	       the configured IP addressed.  Then this netmask is
	       masked with the destination IP address.  If there is
	       a match, then the path_req is allowed through.

   2. Problem: Problems reconnecting back to the target when running
               MTU stress tests.

      Cause:   cnic/bnx2i and uIP could possibly get out of sync when
               an if_down message is sent.

      Change:  uIP will now immediately react to the if_down message,
               and flush all the path req's and then to process to
               if_close.

   Enhancements
   ------------
   1. Change: Fix compile warnings for src/unix/nic_nl.c,
              and src/unix/main.c

uIP v0.6.2.4 (Nov. 4, 2010)
=======================================================
   Fixes
   -----
   1. Problem: iSCSI HBA: brcm_iscsiuio segfault during ifdown
               with many active sessions

      Cause:   uIP will segfault when traversing the error path when
               an iSCSI connection is starting but the sysfs entries
	       have not been created yet.

      Change:  Use the errno value rather then the one from the file
               descriptor because the file descriptor will be NULL and
	       the NULL dereference will cause a segfault.

   Enhancements
   ------------
   1. Change: Added initial changes for iSCSI multi-function support for
              10G NIC's.
   2. Change: Add more detailed messages for error pathes in nic_utils

uIP v0.6.2.3 (October 28, 2010)
=======================================================
   Enhancements
   ------------
   1. Change: Add support for bnx2x-1.62.x drivers

uIP v0.6.2.2 (October 18, 2010)
=======================================================
   Enhancements
   ------------
   1. Change: Only allow iSCSI connections with known bnx2x HSI's.

uIP v0.6.2.1 (October 7, 2010)
=======================================================
   Fixes
   -----
   1. Problem: After multiple MTU changes, the ethtool IOCTL used to
               determine the bnx2x driver version fails and eventually
	       iSCSI connections would not reconnect.

      Cause:   The socket file descriptor used during the ethtool IOCTL
               call was never closed and leaked.

      Change:  On the error path when calling the ethtool IOCTL, the
               file descriptor is now properly closed.

uIP v0.5.39 (September 15, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Could not offload IPv4 VLAN connection when the target tries
               to ARP the iSCSI initiator

      Cause:   In the ARP reply, the ether field was incorrect.

      Change:  Properly set the ether field to 802.1Q type (0x8100)

uIP v0.5.38 (September 14, 2010)
=======================================================
   Fixes
   -----
   1. Problem: uIP would cause a panic dump when the NIC was going down

      Cause:  uIP and CNIC where not synchonized on NIC state

      Change:  Check if the RX BD's which are zero'ed by CNIC when the
               NIC is going down.  If the BD addresses are zero, then
	       uIP will drop the TX packets.

uIP v0.5.37 (August 21, 2010)
=======================================================
   Fixes
   -----
   1. Problem: uIP would segfault on ifup/ifdown stress test when using
               DHCP to determine local IP address.

      Cause: The uIP would use a NULL buffer during data transmission.

      Change:  Drop packets when there are no buffer avaliable.

uIP v0.5.36 (August 21, 2010)
=======================================================
   Fixes
   -----
   1. Problem: iSCSI boot would not completely login after the pivot
               root operation.

      Cause: The uIP would not properly start the NIC interface.

      Change: uIP should only check the NIC state to determine whether
              to start the NIC thread or not.

   2. Problem: uIP would segfault during if'up if'down testing.

      Cause: The uIP would improperly start 2 NIC threads for the
             same NIC interface.

      Change: uIP should properly lock the NIC list when disabling/removing
              the NIC threads.


uIP v0.5.35 (August 20, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Sessions would hang with ethtool self-test

      Cause: The uIP would hang because the socket layer was stuck
             because there is much contention for that socket.  This
             would hang the CNIC thread.

      Change: Remove any IOCTL calls in uIP which may colide with
              the ethtool self test.  The driver version is only
              capture during uIP initialization.

   2. Problem: There were session recovery issue when using DHCP
               if up/down tests.

      Cause: The uIP would hang because the DHCP requests would
             timeout if the network interface is downed which would
             hang all the other uIP threads.

      Change:  Ensure that the DHCP state machine had exit points
               if the network interface was down'ed.


uIP v0.5.34 (August 18, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Sessions would not recover with ethtool self-test

      Cause: The uIP would hang because either the NetLink buffer is
             full or that any socket operations used to manipulate
             multicast addresses would block.

      Change: Ensure that the socket used for multicast addressing is
              set to nonblocking.  Drain the NetLink buffer without
              using the eventing, but with a more aggressive poll routine.

   2. Problem: Sessions would not recover with L2 driver load/unload on
               RHEL 6.0 SS9

      Cause: The uIP would close the NIC thread too early and would
             deadlock on cloing the NIC thread.

      Change: Ensure that the NIC thread is canceled/closed only in one
              location, in the NIC remove routine.


uIP v0.5.33 (August 17, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Error message seen from the uIP stack for valid packets.

      Cause: The uIP was incorrectly marking logging messages for valid
             packets as errors because it didn't know how to parase them.

      Change: Changed the following from error to debug message
                ipv6: invalid version
                ipv4: invalid version or header length.
                icmpv6: unknown ICMP message.
                ip: neither tcp nor icmp
              Changed the following from error to warn message
                udp: bad checksum
                tcp: bad checksum
                tcp: got reset, aborting connection.

   2. Problem: After multiple iterations the loading and unloading of
               the Broadcom Linux drivers with active connections
	       would not cause the sessions to recover on RHEL 6.0
	       snapshot 9.

      Cause:  There was a deadlock in the nic mutex

      Change:  Lock ordering for the nic mutex and nic list mutex must
               be inforced.

   3. Problem: After multiple iterations of running the ethtool selftest
               the Broadcom Linux drivers with active connections
	       would not cause the sessions to recover on RHEL 5.5.

      Cause: The Netlink buffer between uIP and CNIC would get full.

      Change:  Poll more regularly for packets in the Netlink buffer
               from 4 times a second to 100 times a 1 second.
               Drain packets during the PATH_REQ packet pull.


uIP v0.5.32 (August 14, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Error message 'nic eth0: Didn't find type 0xaa bb' seen.

      Cause: Valid non-DIX Ethernet packets as being passed to the
             uIP.  uIP will drop these packets but should be logged
	     correctly.

      Change: These packets are valid, and should only be logged for
              debugging purposes.

   2. Problem: Error message 'Dropped previous transmitted packet' seen.

      Cause: The TX ring is full, and here uIP is trying to transmit a
             packet which will be dropped.  This is a valid state but
	     the log message is marked incorrectly

      Change: These messages are not warnings and should be logging when
              debugging is enabled.

   3. Problem: Error message: "iscsi_ipc eth0 Transport name is not
               equal expected:  got: bnx2i" seen.

      Cause:  The iface_rec structure is different between iscsid version.
              For RHEL 5.5, iscsid is versioned 871, for RHEL 6.0 is
	      versioned 872.

      Change: Allow uIP to compile against a different version of iscsid.


uIP v0.5.31 (August 12, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Softlock would occur showing that the NetLink table
               lock was taken but never released.

      Cause: NetLink socket buffer would fill with constant PATH_REQ
             messages preventing PATH_REQ response from libiscsi

      Change: Now uIP will drain the NetLink buffer while looking for
              a response.

   Enhancements
   ------------
   1. Change: Add documentation for VLAN configuration and restrictions.


uIP v0.5.30 (August 6, 2010)
=======================================================
   Fixes
   -----
   1. Problem: iscsid thread will stall if closing the uio files nodes
               is stuck

      Cause:  uIP would indefinitely block waiting for the mutex shared
              by the close routine.

      Change: Now uIP will try and poll a bit for the mutex.  If it can't
              get this mutex in the iscsid thread then an error is return
	      rather then hold the thread.

   2. Problem: IPv6 Unicast Neighbor Adveriserments would have the
               ICMPv6 option header specifying a MAC.

      Cause:  uIP should use the source IPv6 address to detmine whether
              to strip the option header or not and not the target address
	      in the ICMPv6 field.

      Change:  The uIP stack return a unicast IPv6 Neighbor Advertisement
               without the ICMPv6 option as a response to unicast
	       IPv6 Neighbor Solicitations.

   3. Problem: There would be TCP SYN packets with improper MAC address.

      Cause:   A zero'ed MAC address was not passed to CNIC to indicate an
               error or if the IP address didn't resolve.

      Change:  The uIP stack will now return a zero'ed MAC address if it
               can't find any entries.


uIP v0.5.29 (August 6, 2010)
=======================================================
   Fixes
   -----
   1. Problem: "uip udp: no matching connection found: lport: 35072"
               seen numerous times in the brcm_iscsiuio log file

      Cause:  This message was incorrectly marked as an error

      Change: These messages are valid log entries especially if the
              packet was a broadcast UDP packet not destined for the SUT
              I will change the code to mark these logs entries as debug.


uIP v0.5.28 (August 5, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Can't login into a redirected Equilogic Target

      Cause:  The Equilogic Target uses a unicast IPv6 Neighbor
              Solicitation to test if the host is up.  The uIP stack
	      would return a Neighbor Advertisement with an unneeded
	      ICMPv6 option.

      Change: Only have the uIP stack return a unicast IPv6 Neighbor
              Advertisement without the ICMPv6 option.

   2. Problem: With older bnx2/bnx2x/cnic/bnx2i driver combinations
               uIP would segfault when these drivers were unloaded.

      Cause:  When the older drivers were removed, the underlying uio
              instance was removed causing uIP to have a stale file handle.
	      When uIP finally closes using this stale file handle, either
	      uIP would segfault, or there would be an error in the
	      uio_release() path.

      Change: Only have the uIP close if the UIO file node exists.


uIP v0.5.27 (July 31, 2010)
=======================================================
   Fixes
   -----
   1. Problem: iSCSI HBA: Unable to use DHCP address for iSCSI interface
               if a connection was previously made with a static address
	       on bnx2 devices.

      Cause:  Because the device is closed and reopen'ed the TX consumer
              indexes were not persisted

      Change: Only discard the TX consumer indexes only when the devices
              will be discarded or closed

   Enhancements
   ------------
   1. Change: Change CNIC references to bnx2 in the bnx2 user space
              driver.


uIP v0.5.26 (July 30, 2010)
=======================================================
   Fixes
   -----
   1. Problem: iSCSI HBA: Unable to use DHCP address for iSCSI interface
               if a connection was previously made with a static address on
	       bnx2x devices.

      Cause:  Because the device is closed and reopen'ed the TX consumer
              indexes were not persisted

      Change: Only discard the TX consumer indexes only when the devices
              will be discarded

   2. Problem: IPv6 using VLAN's didn't login

      Cause:  The uIP code used to determine if the packet was an IPv6
              or not was not working.  This VLAN packets for IPv6 were
	      being mis-interpreted.

      Change: Make the function is_ipv6() VLAN aware

   3. Problem: Persistant targets was not loggin in during boot

      Cause:  If udev was slow and the /dev/uio* were creatly slowly
              uIP would fail.

      Change: Poll uIP waiting for /dev/uio* file nodes.

uIP v0.5.25 (July 27, 2010)
=======================================================
   Fixes
   -----
   1. Problem: When using IPv4 DHCP, there are no initial DHCP Discover
               packets were not seen on the wire.

      Cause:  Packets generated from the app handler from the uIP stack
              were not placed on the wire.

      Change: Packets originating from the uIP stack are now always placed
              on the wire.

uIP v0.5.24 (July 25, 2010)
=======================================================
   Fixes
   -----
   1. Problem: One would see invalid packet packets flow through the
               uIP stack, where the logs would indicate there is a packet
               with an invalid length

      Cause:  The BD and CQE consumer indexes were not properly incremented
              and masked.

      Change: The BD index is now properly masked.  The CQE index is not
              incremented using the CQE index rather the mistaken BD index.

      Impact: 10G only

   2. Problem: uIP would segfault during the booting of the machine.

      Cause:  uIP was using a NULL data pointer because there was an
              incorrect packet passed to the stack.

      Change: Only allow uIP to process data if the packet exists.

   3. Problem: uIP would stop processing packets

      Cause:  The uIP code would not properly drain the CQE ring causing
              it to eventually be full

      Change: Consume all the CQE elements even if they are ethernet types
              or not.

      Impact: 10G only

   4. Problem: uIP would stop after if/down of the network interface.

      Cause:  uIP was not kick starting the NIC loop thread properly.

      Change: Ensure that the NIC loop thread is started by when iscsid
              request that the interface start the offload.  Mark the NIC
	      only if the thread is truly canceled.


uIP v0.5.23 (July 20, 2010)
=======================================================
   Fixes
   -----
   1. Problem:  Segfault during brcm_iscsiuio initialization

      Cause:  uIP was using a NULL data pointer, because a different
              thread re-initialized the uIP stack

      Change: Properly synchronize the initialization of the stack

   2. Problem:  Deadlock during the printing of heavy debug messages

      Cause:  The variable macro structures would point to invalid
              data

      Change:  With each invocation of va_copy() a corresponding
               invocation of va_end() in the same function for the proper
	       cleanup

   3. Problem:  uIP would hang when the interface could go up/down

      Cause:  uIP would get out of sync with the state of the network
              interface

      Change:  Instead of detriving state from the UIO file nodes, uIP
               will take direction from iscsid on when interfaces will be
	       started.

uIP v0.5.22 (July 15, 2010)
=======================================================
   Fixes
   -----
   1. Problem:  Unable to reconnect via iSCSI offload after
		ifup/ifdown

      Cause:  uIP was stuck on the thread when closing the NIC main
              loop

      Change: Properly synchronize the NetLink CNIC and uevent threads

   2. Problem:  uIP would crash during boot up.

      Cause:  uIP would overwrite a memory location which was already
              freed during nic_remove().

      Change: Since the NIC is freed there is no need to write to
              update the NIC flags

   Enhancements
   ------------

   1. Change:  Added IPv6 Link Local support


uIP v0.5.21 (July 5, 2010)
=======================================================
   Fixes
   -----
   1. Problem:  Unable to connect via iSCSI offload after
		changing L2 address

      Cause:  uIP didn't notice the network inferface going down

      Change: Allow uIP to persist the stack's IP address after
              a reset

   2. Problem:   Unable to connect via IPv4 and IPv6 concurrently

      Cause:  uIP didn't notice the network inferface going down

      Change: Allow uIP to persist the stack's IP address after
              a reset and properly bring up the interface

   3. Problem:   Unable to connect via VLAN

      Cause:  IP address was no persisted after a device reset

      Change: When CNIC requests a path request, uIP will use the
              VLAN passed by the CNIC.


uIP v0.5.20 (June 24, 2010)


uIP v0.5.20 (June 24, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Certain IPv6 addresses are not repsonded to by
               the target.

      Cause:  The MAC was generated from the target's IPv6
              address not the deterived multicast IPv6 address.

      Change: The destination MAC address should be deterived
              from the packet's destination IPv6 address and
	      not the target.

   2. Problem: brcm_iscsiuio would segfault when L2 interface is
               bought up and down after being logged into

      Cause:  The NIC thread was not stopped properly

      Change: When the UIO device is remove and when the
              cooresponding NIC tracked by brcm_iscsiuio, the
	      daemon would properly wait for the NIC thread to
	      stop.


uIP v0.5.19 (June 22, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Can't login after boot

      Cause:  If NIC interfaces are brough up and down quickly
              uIP wait on an invalid NIC thread

      Change: Only wait for the NIC thread if the NIC thread
              exists.

uIP v0.5.18 (June 21, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Does not compile on SLES 11 SP1

      Cause:  Automake cached files were included as part of the
              uIP-0.5.17 package

      Change: Remove automake cached files, and allow these files
              to be generated each time the source is compiled

   2. Problem: Does not always receive multicast packets

      Cause:  Multicast bit was not set in SORT USER 2 register

      Change: brcm_iscsiuio will now set the SORT USER 2 registers
              with both the broadcast and multicast bits.

   3. Problem: Existing iSCSI connections do not reconnect after
               operations which require equivalent driver
	       load/unload operations

      Cause:  Multiple path requests would trample NIC configurations

      Change: Allow only one path request at a time

uIP v0.5.17 (June 16, 2010)
=======================================================
   Fixes
   -----
   1. Problem: IPv6 neighbor solicitations from brcm_iscsiuio could
               not be responded to

      Cause:  The IPv6 neighbor solicitation packet had an invalid
              multicast MAC address

      Change: Properly set the MAC address multicast bit and OR
              with the IPv6 destination address

   2. Problem: NIC state was not properly synchronized and noticed
               by Shyam Iyer <shiyer@redhat.com>

      Change: Properly lock the NIC device when changing state

   Enhancements
   ------------

   1. Change: Listen for iscsid before daemonizing to close a timing
              gap which might allow iscsid to start before uIP is
	      completely initialized.

uIP v0.5.16 (June 2, 2010)
=======================================================

   Enhancements
   ------------

   1. Change: Formally add IPv6 support.  Only a static IPv6 address
              is supported.

uIP v0.5.15 (May 20, 2010)
=======================================================

   Fixes
   -----
   1. Problem: brcm_iscsiuio would echo packets off the wire

      Cause:  Stale packets from the uIP stack could potentially
              make it onto the wire causing a network flood

      Change: Only place on the wire packets uIP intended to place
              on the wire.  Drop all other packets.

uIP v0.5.14 (May 18, 2010)
=======================================================

   Fixes
   -----
   1. Problem: brcm_iscsiuio would crash when offloading using a
               bnx2x device /dev/mem could not be
               opened, (ie. SE Linux enabled)

      Cause:  /dev/mem could not be opened, (ie. SE Linux enabled)
              and then the NIC would be improperly initialized.

      Change: If /dev/mem is not able to be opened, then the device
              is closed

   2. Problem: brcm_iscsiuio would crash when brcm_iscsiuio is
               being shutdown

      Cause:  The NIC mutex was deferenced imporperly when the NIC
              is being closed

      Change: Take the NIC mutex lock only when the NIC is closed.

uIP v0.5.13 (May 16, 2010)
=======================================================

   Fixes
   -----
   1. Problem: brcm_iscsiuio would crash with heavy traffic directed
               at the iSCSI traffic

      Cause:  Packets which are sized between 1006-1024 bytes would
              crash brcm_iscsiuio because brcm_iscsiuio is not sized
	      to handle such large packets

      Change: Drop large packets, properly hold the NIC mutex lock
              for the duration when NIC fields are being used.


uIP v0.5.12 (May 13, 2010)
=======================================================

   Fixes
   -----
   1. Problem: brcm_iscsiuio could crash on when L2 interface is
               ifdown'ed

      Cause:  The local NIC pointer was not initialized properly
              in the routine parse_iface()

      Change: Properly initialize the NIC pointer

   2. Problem: Documentation referred to older admin_client which
               doesn't exist any more because brcm_iscsiuio uses
	       the iscsid iface file

      Change: Remove the stale references


uIP v0.5.11 (May 11, 2010)
=======================================================

   Fixes
   -----
   1. Problem: brcm_iscsiuio could crash on invalid packet sizes

      Cause:  The hardware BD could be a large value because of a
              hardware error

      Change: Limit the size of the packet dumped to the MTU size

   Enhancements
   ------------

   1. Change: During the running of the configure script now
              the script will check for ar and ranlib binaries


uIP v0.5.10 (May 03, 2010)
=======================================================

   Fixes
   -----
   1. Problem: BCM57712 not recognized

      Cause:  The PCI ID's in the bnx2x file were missing.

      Change: Added proper BCM57712, BCM57712E, BCM57713, BCM57713E
              PCI ID's

   2. Problem: (CQ 47481) brcm_iscsiuio not installed in correct location

      Cause:  Default install path for autoconf is /usr/local

      Change: Change the default prefix to '/' so the brcm_iscsiuio
              binary is installed to /sbin/

   Enhancements
   ------------

   1. Change: Remove dependency on Yacc and Lex


uIP v0.5.9 (April 28, 2010)
=======================================================

   Fixes
   -----
   1. Problem: bnx2x T6.0 driver would not login

      Cause:  The bnx2x code was not using the T6.0 HSI offsets

      Change: Determine to bnx2x driver version eariler to properly use the
              T4.8 or T6.0 HSI

   Enhancements
   ------------

   1. Change: Collapse all the various locks to use the NIC lock to shrink
              memory footprint

   2. Change: Consolidate upper layer checksumming code


uIP v0.5.5 (March 02, 2010)
=======================================================

   Enhancements
   ------------

   1. Change: Add support for T6.0 bnx2x HSI and 57712.

   2. Change: Initial support for IPv6

uIP v0.5.8 (April 22, 2010)
=======================================================

   Enhancements
   ------------

   1. Change: Add support for T6.0 bnx2x HSI and 57712.

   2. Change: Initial support for IPv6

uIP v0.5.7 (March 17, 2010)
=======================================================

   Enhancements
   ------------

   1. Change: Add to documentation on discovering on a particular
	      iface before logging in

uIP v0.5.6 (Mar 05, 2009)
=======================================================
   Fixes
   -----
   1. Problem: bnx2x panic dump would be seen when sending
               traffic to uIP

      Cause: The TX producer index was not properly
             incrementing when the wrapping occured

      Change: Do not skip the last TX producer index like the
              TX BD's

      Impact: None.

uIP v0.5.5 (March 02, 2010)
=======================================================
   Initial release

   Enhancements
   ------------

   1. Change: Add to documentation on debugging/logging for uIP


uIP v0.5.4 (Feb 22, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Compile error where 'ETHERTYPE_VLAN' define
               is missing

      Cause: Certain distributions do not define 'ETHERTYPE_VLAN'
             in the header file "net/ethernet.h".

      Change: Added proper defines for ETHERTYPE_VLAN when necessary

      Impact: None.


uIP v0.5.3 (Feb 18, 2010)
=======================================================
   Fixes
   -----
   1. Problem: Using VLAN's on offloaded iSCSI connections

      Cause: (CQ45983) VLAN tags were not being properly inserted
             when sending the ARP request packets

      Change: Added VLAN tags when sending ARP request packets

      Impact: None.


uIP v0.5.2 (Dec 10, 2009)
=======================================================
   Fixes
   -----
   1. Problem: Switching between 10G and 1G iSCSI offloaded
               devices caused login connectivity problems

      Cause: The NIC devices within uIP were not cleanup
             properly.

      Change: The NIC structure is not re-initialized and the
              NIC thread is destroyed when the host network
              interface is brought down.

      Impact: None.


uIP v0.5.1 (Dec 9, 2009)
=======================================================
   Fixes
   -----
   1. Problem: 10G devices behind PCI bridges would not collect

      Cause: PCI bus:slot.func string was parsed incorrectly
             because the bridge string was used

      Change: Parse the proper PCI bus:slot.func string.

      Impact: None.


uIP v0.5.0b (Nov 24, 2009)
=======================================================
   Initial release

   Enhancements
   ------------

   1. Change: Add Broadcom 10G iSCSI offload support

      Impact: Linux

