changelog

思科路由器仿真器,用来仿7200系列得,可以在电脑上模拟路由器-Cisco router simulator, used to fake a 7200 series can be simulated

08-Aug-2006
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  - Some work on PA-4B (Munich32 chip).

09-Aug-2006
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  - Continuing on PA-4B (trying to understand TP3420).

10-Aug-2006
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  - C7200: Added PA Mgmt IRQ support (required for PA-4B, seen on a real
    c7200 with PA-4B offered by Vernon Missouri).
  - Added TP3420 definitions.

15-Aug-2006
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  - Continuing on PA-4B. Better understanding of the TX ring. 
    Fixed interrupt queue management.
	
19-Aug-2006
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  - Added hv_vm.c module to handle generic VM operations.
  - Added hv_c3600.c module for the Cisco 3600 platform.
  - Fixed a bug in VTTY flushing.

20-Aug-2006
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  - Added code to gen_eth module for Cygwin to prevent WinPCAP from giving
    back transmitted packets. It requires WinPCAP 0.4-alpha1 or better.
    TODO: need to be tested!
	
21-Aug-2006
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  - Fixed C3660 boot. Trying to understand/discover the hardware.
    Environmental monitor should be ok.

24-Aug-2006
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  - Added NS16552 flush optimization (Peter Ross).
  - Fixed missing periodic task removal in NS16552.

26-Aug-2006
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  - C3660: * Better understanding of NM presence / EEPROM registers.
           * Analyzed registers used when a Net IRQ is triggered.

28-Aug-2006
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  - C3660: Network Modules are now working! Remaining stuff: OIR.

29-Aug-2006
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  - Added more generic code to handle Cisco EEPROM to change easily
    chassis MAC addresses.
  - Updated README with C3600 information.
  - Updated hypervisor documentation (README.hypervisor).
  - Added dated package build to the Makefile (make packdev)
  - Checked WinPCAP fix of 20-Aug-2006: working.
  - Added the capability for high priority IRQ (like NetIO IRQ) to break
    the idle loop. Great latency improvement with NetIO IRQ.
  - C3600: the DUART irq is now higly prioritized. It gives better console
    reactivity. 

30-Aug-2006
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  - Huge performance improvement on dec21140 and am79c971 drivers, by
    transmitting up to 16 packets in one TX ring scan pass.
  - Added the same to Serial driver (untested).
  - Added "unicast limiter" feature to the am79c971 driver, similarly to the
    dec21140 driver. Not having this caused the virtual instances to see
    unrelated host traffic when using linux_eth/gen_eth NIO and consequently
    a bad performance was obtained. Thanks to Greg for noticing that.
  - Beginning of rework of PCI subsystem for PCI bridge support.
    (Greg noticed that with 12.2T releases, the PCI bus numbering is
    different for the C3660).
	
31-Aug-2006
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  - Finished the PCI subsystem rework.
  - C7200: Fixed PCI bridge use for midplanes (std: dec21050, vxr: dec21150).

01-Sep-2006
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  - Finally fixed the Serial problem on C3620 platform (hack in the driver
    to trigger interrupts differently).
  - Cleanup for VM PCI bus pool and C7200 "hidden" I/O bridge was missing.

03-Sep-2006
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  - Added safety checks to the PCI bus management.
  - Added a PLX9060 device (very basic for now).
  - Rewritten the PA-POS-OC3 driver to use the new PLX9060 driver.
  - Cleanup: removed use of c7200 bay info in drivers (everything uses
    PCI for configuration).
  - C7200: removed the bay module which contained static definitions of
    PCI bus, physical addresses for PA, ... Now everything is handled
    dynamically by the PCI subsystem and the remaining drivers (PA-4B,
    PA-POS-OC3) have been fixed.
  - C3600: removed PCI bus info from the bay module (due to PCI bridge new
    code).

04-Sep-2006
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  - Fixed some typos in comments.
  - Added a standalone utility to extract IOS configuration from an 
    NVRAM file.
  - Removed pcireg.h (from NetBSD) which was just used for one definition.
  - Added a "COPYING" file for the GPLv2 licence.

05-Sep-2006
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  - Added basic packet filtering framework, to simulate packet loss or
    alteration.
  - Hypervisor commands now supports a variable number of parameters.
  - bugfix: doing a "sh run" and then pressing "Escape" was causing trouble
    to the VTTY (the state machine was in an incorrect state).
  
06-Sep-2006
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  - Removed erroneous special handling of intra-page jumps in delay slots.
    (problem with c3640 12.0(7)T IP+ image).

07-Sep-2006
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  - C3600: processors ID are now correct.
  - Avoid removing the JIT block of the caller with the "cache" instruction.
  - Added "hypervisor version" to allow clients (Dynagen) to know the current
    version.
  - Added missing explanation for "-P <platform>" command line parameter.
  - C7200: Fixed incorrect cleanup of IO PCI bridge.

08-Sep-2006
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  - Better code for VM error messages.
  - Fixed the write attempts to ROM at startup.

09-Sep-2006
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  - C3600: added support for io memory size, which prevents Smart Init
    from running (hypervisor command: c3600 set_iomem <router> <val>).
  - C3600: fixed incorrect handling of commands for this platform, which
    caused port 0 to be disabled when manipulating other ports.

11-Sep-2006
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  - Fixed loop overflow in idle pc computation.
  - Added base64 encoding/decoding module from Yannick Le Teigner.
  - Added hypervisor commands "vm push_config" and "vm extract_config"
    to manage IOS configurations. Extracting to base64 is ok (verified with
    a third party decoder:
    http://www.opinionatedgeek.com/dotnet/tools/Base64Decode/Default.aspx )
  - C3600: NVRAM checksum is now correctly computed.

12-Sep-2006
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  - Following a suggestion of Yannick Le Teigner, applied the optimization
    principle to PA-A1 card already used in dec21140, ... Latency is clearly 
    better (on my system, this dropped from about 150ms to 50 ms).

14-Sep-2006
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  - Incorrect display of device name in PLX9060 driver.
  - Added manpages provided by Erik Wenzel ([e-mail]). Many thanks
    to him for this and for his work on packaging for Debian.
  - Final 0.2.5 release.
  - C7200: Added missing NVRAM checksum.

15/21-Sep-2006
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  - Working on NM-16ESW.
	
22-Sep-2006
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  - NM-16ESW: interfaces are now up (handles specifically the appropriate
    MII register).

23/25-Sep-2006
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  - Still continuing on the NM-16ESW (first packets received/transmitted).

26-Sep-2006
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  - NM-16ESW: seems to be working! (although there are still a lot of things
    to do).

28-Sep-2006
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  - Added a hack to allow Ethernet NM to work correctly in 3620/3640
    (seen when directly attached to the real network with very few packets
    incoming).
  - NM-16ESW: proper support for tx ring scatter/gather support.
  - NM-16ESW: fixed a bug in ARL insertion.
  - NM-16ESW: send directly BPDU packets to the CPU.

29-Sep-2006
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  - NM-16ESW: added support for "trunks" (ie etherchannel).
  - Added "Ctrl+p" sequence key to dump Port Adapter / Network Module info
    (only NM-16ESW reports something at this time).

30-Sep-2006
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  - NM-16ESW: proper management of station movement (etherchannel is handled).

01-Oct-2006
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  - NM-16ESW: added register handling.

02-Oct-2006
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  - NM-16ESW: playing with the port mirroring feature.
	
04-Oct-2006
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  - Finally understood how to handle link status changes! Now, 
    "shut"/"no shut" is working. Better understanding of MII registers
    in general.

05-Oct-2006
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  - Fixed bug described in BTS entry #65 (in the case where two virtual 
    addresses point at the same physical address, the JIT can use
    inappropriate block). This was a "silent" bug.

07-Oct-2006
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  - Modified the hypervisor parser to allow long lines (to upload IOS configs).

09-Oct-2006
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  - NM-16ESW: added ingress and egress port mirroring (todo: BPDU and CDP
    packets shouldn't be replicated).

10-Oct-2006
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  - 0.2.6-RC1 release.
  - NM-16ESW: implemented ARL count. Fixed the MAC address table display 
    problems.

11-Oct-2006
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  - C3600: fixed NVRAM configuration export.
  - Merged a patch for Solaris/x86 from Damjan Marion.
  - Cleaned the EEPROM stuff to have something more generic.
  - NM-16ESW: base MAC address is now automatically generated.

12-Oct-2006
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  - NM-16ESW: added support to discard input packets.

13-Oct-2006
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  - NM-16ESW: modified the discard support to let BPDU packets arrive to
    the CPU.
  - Added online setup of idle-pc through the hypervisor command
    "vm set_idle_pc_online <vm_name> <cpu_id>".
  - Values computed for idle-pc are now stored in the virtual MIPS CPU
    and can be known through the hypervisor command 
    "vm show_idle_pc_prop <vm_name> <cpu_id>".

15-Oct-2006
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  - Added a timer module.
  - NM-16ESW: added an ARL ager that removes expired MAC addresses.

18-Oct-2006
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  - Added hypervisor commands to tune idle-pc parameters
    ("vm set_idle_max" and "vm set_idle_sleep_time").
  - Centralized NM/PA EEPROM to have common definitions for platforms
    with the same type of network interfaces.
  - 0.2.6-RC2 release.

19-Oct-2006
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  - C2691: added sketelon code.
  - C2691: working DUART.
  - C2691: added mainboard EEPROM.

20-Oct-2006
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  - Bugfix: dec21140 and amd79c97x were incorrectly discarding frames based
    on the source address, preventing HSRP/VRRP to work (BTS entry #75).
  - C2691: added hypervisor module to handle instances.

22-Oct-2006
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  - C2691: trying to understand the network interrupt mechanism.

23-Oct-2006
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  - C2691: fixed Galileo interrupt (IRQ 3), allowing packets to be received!
  - Added a basic GT96100 system controller (for C2691).
  - GT96100: added MII registers.
  - Added a basic Flash device to be used as ROM+NVRAM for C2691.
  - C2691: NVRAM (simulated from flash) is now ok.
  - C2691: Analyzed environmental monitor register. No warning anymore.

24-Oct-2006
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  - C2691: NVRAM config export is working, config import requires more work
    (since write operations to flash are not immediate).
  - Allowed Galileo DMA IRQ to preempt the idle loop.
  - Fixed ATA Flash "current of sectors per card" which must be in LSW/MSW
    order and not MSW/LSW.
  - Added another ATA Flash access method (for c2691).
  - C2691: added support for CompactFlash.

25-Oct-2006
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  - GT96100: added some definitions for the Ethernet part.

26-Oct-2006
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  - Working on TX part for GT96100. Unfortunately, don't know yet how to
    signal an interrupt for it on the 2691 platform :(

27-Oct-2006
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  - C2691: found how to announce correctly NM presence in slot 1.
  - GT96100: finally found how to notify appropriately the network interrupt:
    the Serial Cause Register has to be handled.
  - C2691: added the glue code to set up GT96100 ethernet ports.
  - GT96100: added RX part. Packets are now sucessfully handled.
  - C2691: better understanding of network interrupt status registers.
  - C2691: added correct flash code detection.
  - GT96100: fixed the "PHY reset" problem.
  - C2691: added default correct chassis base MAC address.

28-Oct-2006
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  - GT96100: added hash function (Mode 0 ok, Mode 1 to fix) for Ethernet
    address filtering + appropriate definitions.

29-Oct-2006
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  - GT96100: fixed hash mode 1 (not tested).
  - GT96100: added address filtering process.

30-Oct-2006
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  - GT96100: added minimal MIB counters.
  - Implemented LBA mode for PCMCIA ATA disk devices and fixed data access.
  - Changed the default idle sleep time from 50ms to 30ms to avoid timer 
    IRQ loss and timer drift.
  - Added hypervisor command "vm show_timer_drift <vm_instance> <cpu_id>"
    to display potential problem with a given idle-pc value.
  - C2691: added proper support for IO memory.
  - NM-16ESW: generalized code to support multiple platforms.
  - C2691: added support for NM-16ESW.

31-Oct-2006
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  - C3725: initial support. Hardware very similar to c2691: Cisco rocks!
  - C3745: added skeleton.
  - C3745: fixed GT96100 address.
  - C3745: added PCI bridges.
  - C3745: Network Modules are working!
  - C3745: CompactFlash working.

01-Nov-2006
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  - C3745: finally understood how to handle the system EEPROMs.
  - Updated documentation (README).
  - GT96100: minor enhancement of interrupt handling.

02-Nov-2006
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  - Added support for "ghost" RAM: instances use a RAM file (previously
    created) and use copy-on-write on it. It allows to share common memory 
    between instances and so less memory is used.

03-Nov-2006
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  - Better support for ghost RAM, added hypervisor commands 
    "vm set_ghost_status" and "vm set_ghost_file".

04-Nov-2006
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  - NM-16ESW: fixed incorrect BPDU handling (which caused to add a 2nd
    802.1Q tag to BPDU packets) and now 0100.0ccc.cccd is recognized as
    a BPDU MAC address (BTS entry #).
  - DEC21140: fixed CSR8 handling (missed frame counter), which returned
    an undefined value (BTS entry #81).
  - Merged a patch from Rostislav Opocensky who added support for C3600
    in nvram_export utility.
  - Re-enaebled debugging info for NM-16ESW on 2691/3600/37xx.

05-Nov-2006
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  - NM-16ESW: fixed a crash due to incomplete device removal.

06-Nov-2006
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  - Validated use of Serial interfaces with 2691/3725/3745.
  - Correct config register handling for 3600/2691/3725/3745 platforms
    (config register setting was ignored).
  - Added detection of empty NVRAM for 2691/3725/3745 to set the ignore config
    flag in the config register (to boot faster).
  - C3745: Fixed NVRAM properties.
  - C7200/C3600: rewrite of configuration push into NVRAM (can now be done 
    offline).
  - C2691/C3725/C3745: added support for config push into ROM flash
    (simulated NVRAM).

07-Nov-2006
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  - Modified config export from NVRAM for all platforms (can now be done
    offline).
  - Better handling of base MAC address (2691/3725/3745 + NM-16ESW).

08-Nov-2006
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  - Rework of the MTS subsystem (generalization of MTS64 algorithms to MTS32
    which was broken).
  - Fast memory operations for 32-bit mode.

09-Nov-2006
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  - Rewrite of the MIPS TLB lookup operation.

10-Nov-2006
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  - Fixed another bug in TLB lookup.
  - Beginning of work for PA-MC-8TE1 support.
  - Added hypervisor commands to send messages to instances VTTY.
  - Working on PLX PCI9054 for PA-MC-8TE1.

11-Nov-2006
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  - Continuing a bit on PA-MC-8TE1.
	
14-Nov-2006
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  - Correct handling of VPN2 mask for TLB lookup.
  - bugfix: support of c3745 was missing in the hypervisor.
  - Merged a patch from Akim Dreyer for Debian support.