| This file contains information about the SIMH Ethernet package. | |
| ------------------------------------------------------------------------------- | |
| The XQ emulator is a host-independent software emulation of Digital's | |
| DELQA-T (M7516-YM), DELQA (M7516) and DEQNA (M7504) Q-bus Ethernet cards | |
| for the SIMH emulator. | |
| The XU emulator is a host-independent software emulation of Digital's DEUNA | |
| (M7792/M7793) and DELUA (M7521) Unibus Ethernet cards for the SIMH emulator. | |
| The XQ and XU simulators use the Sim_Ether module to execute host-specific | |
| packet reads and writes, since all operating systems talk to real Ethernet | |
| cards/controllers differently. See the comments at the top of sim_ether.c | |
| for the list of currently supported host platforms. | |
| The Sim_Ether module sets the selected Ethernet card into | |
| promiscuous mode to gather all packets, then filters out the packets that it | |
| doesn't want. In Windows, packets having the same source MAC address as the | |
| controller are ignored for WinPCAP compatibility (see Windows notes below). | |
| If your Ethernet card is plugged into a switch, the promiscuous mode setting | |
| should not cause much of a problem, since the switch will still filter out | |
| most of the undesirable traffic. You will only see "excessive" traffic if you | |
| are on a direct or hub(repeater) segment. | |
| On Windows using the WinPcap interface, the simulated computer can "talk" to | |
| the host computer on the same interface. On other platforms with libpcap | |
| (*nix), the simulated computer can not "talk" to the host computer via the | |
| selected interface, since simulator transmitted packets are not received | |
| by the host's network stack. The workaround for this is to use a second NIC | |
| in the host and connect them both into the same network; then the host and | |
| the simulator can communicate over the physical LAN. | |
| Integrated Universal TUN/TAP support provides another solution for the above | |
| dual-NIC problem for systems that support Universal TUN/TAP. Since the TUN/TAP | |
| interface is a pseudo network interface, the host can create a TAP device for | |
| the simulator and then bridge or route packets between the TAP device and the | |
| real network interface. Note that the TAP device and any bridging or routing | |
| must be established before running the simulator; SIMH does not create, | |
| bridge, or route TAP devices for you. | |
| Integrated Universal TUN/TAP support can be used for host<->simulator network | |
| traffic (on the platforms where it is available) by using the SIMH command: | |
| "attach xq tap:tapN" (i.e. attach xq tap:tap0). Platforms that this has been | |
| tested on include: Linux, FreeBSD, OpenBSD, NetBSD and OSX. Each of these | |
| platforms has some way to create a tap pseudo device (and possibly then to | |
| bridge it with a physical network interface). | |
| The following steps were performed to get a working SIMH vax simulator | |
| sharing a physical NIC and allowing Host<->SIMH vax communications: | |
| Linux (Ubuntu 10.04): | |
| apt-get install bridge-utils | |
| apt-get install uml-utilities | |
| #!/bin/sh | |
| HOSTIP=`/sbin/ifconfig eth0 | grep "inet addr" | gawk -- '{ print $2 }' | gawk -F : -- '{ print $2 }'` | |
| HOSTNETMASK=`/sbin/ifconfig eth0 | grep "inet addr" | gawk -- '{ print $4 }' | gawk -F : -- '{ print $2 }'` | |
| HOSTBCASTADDR=`/sbin/ifconfig eth0 | grep "inet addr" | gawk -- '{ print $3 }' | gawk -F : -- '{ print $2 }'` | |
| HOSTDEFAULTGATEWAY=`/sbin/route -n | grep ^0.0.0.0 | gawk -- '{ print $2 }'` | |
| # | |
| /usr/sbin/tunctl -t tap0 [-u someuser] | |
| /sbin/ifconfig tap0 up | |
| # | |
| # Now convert eth0 to a bridge and bridge it with the TAP interface | |
| /usr/sbin/brctl addbr br0 | |
| /usr/sbin/brctl addif br0 eth0 | |
| /usr/sbin/brctl setfd br0 0 | |
| /sbin/ifconfig eth0 0.0.0.0 | |
| /sbin/ifconfig br0 $HOSTIP netmask $HOSTNETMASK broadcast $HOSTBCASTADDR up | |
| # set the default route to the br0 interface | |
| /sbin/route add -net 0.0.0.0/0 gw $HOSTDEFAULTGATEWAY | |
| # bridge in the tap device | |
| /usr/sbin/brctl addif br0 tap0 | |
| /sbin/ifconfig tap0 0.0.0.0 | |
| # Run simulator and "attach xq tap:tap0" | |
| OpenBSD (OpenBSD 4.6) | |
| /sbin/ifconfig tun0 create | |
| /sbin/ifconfig tun0 link0 | |
| /sbin/ifconfig tun0 up | |
| /sbin/ifconfig bridge0 create | |
| /sbin/brconfig bridge0 fwddelay 4 | |
| /sbin/brconfig bridge0 add em0 add tun0 # Change em0 to reflect your physical NIC name | |
| /sbin/brconfig bridge0 up | |
| # Run simulator and "attach xq tap:tun0" | |
| FreeBSD (FreeBSD 8.0) | |
| /sbin/ifconfig tap0 create | |
| /sbin/ifconfig tap0 up | |
| /sbin/ifconfig bridge0 create | |
| /sbin/ifconfig bridge0 addm em0 addm tap0 # Change em0 to reflect your physical NIC name | |
| /sbin/ifconfig bridge0 up | |
| # Run simulator and "attach xq tap:tap0" | |
| # Note: it seems that on FreeBSD you may have to | |
| # "/sbin/ifconfig tap0 up" and "/sbin/ifconfig bridge0 up" prior to each | |
| # time simh "attach"es the tap:tap0 device | |
| NetBSD (NetBSD 5.0.2) | |
| /sbin/ifconfig tap0 create | |
| /sbin/ifconfig tap0 up | |
| /sbin/ifconfig bridge0 create | |
| /sbin/brconfig bridge0 fwddelay 1 | |
| /sbin/brconfig bridge0 add wm0 add tap0 # Change wm0 to reflect your physical NIC name | |
| /sbin/brconfig bridge0 up | |
| # Run simulator and "attach xq tap:tap0" | |
| OSX (Snow Leopard) | |
| OSX Does NOT have native support for tun/tap interfaces. It also does not have native | |
| support for bridging. | |
| Mattias Nissler has created tun/tap functionality available at http://tuntaposx,sourceforge.net/ | |
| We'll punt on bridging for the sake of this example and move on to use a basic tap | |
| based internal network so a host and guest can communicate directly. | |
| Download the install package from: | |
| http://sourceforge.net/projects/tuntaposx/files/tuntap/20090913/tuntap_20090913.tar.gz | |
| Expand the tarball to a directory. | |
| Invoke the package installer tuntap_20090913.pkg | |
| Click through the various prompts accepting things and eventually installing the package. | |
| # Build and Run simulator and: | |
| sim> attach xq tap:tap0 | |
| sim> ! ifconfig tap0 192.168.6.1 netmask 255.255.255.0 | |
| Simulated system uses IP address 192.168.6.2 and host uses 192.167.6.1 | |
| and things work. | |
| You must run as root for this to work. | |
| ------------------------------------------------------------------------------- | |
| An alternative to direct pcap and tun/tap networking on *nix environments is | |
| VDE (Virtual Distributed Ethernet). | |
| Note 1: Using vde based networking is likely more flexible, but it isn't | |
| nearly as efficient. Host OS overhead will always be higher when | |
| vde networking is used as compared to native pcap and/or tun/tap | |
| networking. | |
| Note 2: Root access will likely be needed to configure or start the vde | |
| environment prior to starting a simulator which may use it. | |
| Note 3: Simulators running using VDE networking can run without root | |
| privilege. | |
| Linux (Ubuntu 10.04): | |
| apt-get install libvdeplug-dev | |
| apt-get install vde2 | |
| vde_switch -s /tmp/switch1 -tap tap0 -m 666 | |
| ifconfig tap0 192.168.6.1 netmask 255.255.255.0 up | |
| # Build and Run simulator and: | |
| sim> attach xq vde:/tmp/switch1 #simulator uses IP address 192.168.6.2 | |
| ------------------------------------------------------------------------------- | |
| Windows notes: | |
| 1. The Windows-specific code uses the WinPCAP 4.x package from | |
| http://www.winpcap.org. This package for windows simulates the libpcap | |
| package that is freely available for un*x systems. | |
| 2. You must *install* the WinPCAP runtime package. | |
| 3. The first time the WinPCAP driver is used, it will be dynamically loaded, | |
| and the user must be an Administrator on the machine to do so. If you need | |
| to run as an unprivileged user, you must set the "npf" driver to autostart. | |
| Current WinPcap installers provide an option to configure this at | |
| installation time. | |
| Building on Windows: | |
| Building with MinGW can use the provided makefile following the instructions | |
| below. Alternatively, you can use the free Visual C++ Express 2008 or 2010 | |
| interactive development environments. Read the file | |
| ".\Visual Studio Projects\0ReadMe_Projects.txt" for details. | |
| 1. Install WinPCAP 4.x runtime and the WinPCAP Developer's kit. | |
| 2. Put the required .h files (bittypes,devioctl,ip6_misc,pcap,pcap-stdinc | |
| packet32,ntddndis).h from the WinPCAP 4.x developer's kit in the | |
| compiler's include file path | |
| 3. Put the required .lib files (packet,wpcap).lib from the WinPCAP 4.x | |
| developer's kit in the linker's library path | |
| 4. If you're using Borland C++, use COFF2OMF to convert the .lib files into | |
| a format that can be used by the compiler. | |
| 5. Define USE_NETWORK. The current windows network built binaries will | |
| run on any system. regardless of whether or not WinPcap is installed, | |
| and will provide Network functionality when WinPcap is available. | |
| 6. Build it! | |
| ------------------------------------------------------------------------------- | |
| Linux, {Free|Net|Open}BSD, OS/X, and Un*x notes: | |
| ----- WARNING ----- WARNING ----- WARNING ----- WARNING ----- WARNING ----- | |
| Sim_Ether has been reworked to be more universal; because of this, you will | |
| need to get a version of libpcap that is 0.9 or greater. All current Linux | |
| distributions provide a libpcap-dev package which has the needed version | |
| of libpcap and the required components to build applications using it. | |
| If you are running an older Linux OS, you can download and build the required | |
| library from www.tcpdump.org - see the comments at the top of Sim_ether.c | |
| for details. | |
| ----- WARNING ----- WARNING ----- WARNING ----- WARNING ----- WARNING ----- | |
| 1. For all platforms, you must run SIMH(scp) with sufficient privilege to | |
| allow the Ethernet card can be set into promiscuous mode and to write | |
| packets through the driver. | |
| a) For Windows systems this means having administrator privileges to | |
| start the "npf" driver. The current WinPcap installer offers an | |
| option to autostart the "npf" driver when the system boots. | |
| b) For more recent Linux systems, The concepts leveraging "Filesystem | |
| Capabilities" can be used to specifically grant the simh binary | |
| the needed privileges to access the network. The article at: | |
| http://packetlife.net/blog/2010/mar/19/sniffing-wireshark-non-root-user/ | |
| describes how to do this for wireshark. The exact same capabilities | |
| are needed by SIMH for network support. Use that article as a guide. | |
| c) For Unix/Unix-like systems which use bpf devices (NetBSD, | |
| OpenBSD, FreeBSD and OS/X) it is possible to set permissions on | |
| the bpf devices to allow read and write access to users other | |
| than root (For example: chmod 666 /dev/bpf*). Doing this, has | |
| its own security issues. | |
| d) For other platforms this will likely mean running as root. | |
| Additional alternative methods for avoiding the 'run as root' requirement | |
| will be welcomed. | |
| 2. If you want to use TAP devices, and any surrounding system network/bridge | |
| setup must be done before running SIMH. However, once that is done | |
| (possibly at system boot time), using the TAP devices can be done without | |
| root privileges. | |
| Building on Linux, {Free|Net|Open}BSD, OS/X, Un*x: | |
| 1. Get/make/install the libpcap-dev package for your operating system. Sources: | |
| All : http://www.tcpdump.org/ | |
| Older versions of libpcap can be found, for various systems, at: | |
| Linux : search for your variant on http://rpmfind.net | |
| OS/X : Apple Developer's site? | |
| NOTE: These repositories for older versions of these platforms | |
| don't contain a version of libpcap greater than 0.8.1. | |
| However, most(all) recent releases of *nix environments ship | |
| with sufficiently recent versions of libpcap either automatically | |
| installed or available for installation as part of the | |
| distribution. | |
| 2. If you install the vendor supplied libpcap-dev package and it provides | |
| a /usr/lib/libpcap.a file, then the existing makefile will automatically | |
| use the vendor supplied library without any additional arguments. | |
| If you have downloaded and built the libpcap from tcpdump.org, then | |
| you can use it during a build by typing 'make USE_NETWORK=1' | |
| 3. Build it! | |
| ------------------------------------------------------------------------------- | |
| OpenVMS Alpha and OpenVMS Integrety (IA64) notes: | |
| 1. Ethernet support will only work on Alpha VMS 7.3-1 or later, which is | |
| when required VCI promiscuous mode support was added. Hobbyists can | |
| get the required version of VMS from the OpenVMS Alpha Hobbyist Kit 3.0. | |
| Running a simulator built with Ethernet support on a version of VMS prior | |
| to 7.3-1 will behave as if there is no Ethernet support built in due to | |
| the inability of the software to set the PCAPVCM into promiscuous mode. | |
| An example display of fully functional Ethernet support: | |
| sim> SHOW XQ ETH | |
| ETH devices: | |
| 0 we0 (VMS Device: _EWA0:) | |
| 1 we1 (VMS Device: _EWB0:) | |
| An example display when the simulator was built without Ethernet support | |
| or is not running the required version of VMS: | |
| sim> SHOW XQ ETH | |
| ETH devices: | |
| no network devices are available | |
| 2. You must place the PCAPVCM.EXE execlet in SYS$LOADABLE_IMAGES before | |
| running a simulator with Ethernet support. Note: This is done by the | |
| build commands in descrip.mms. | |
| 3. You must have CMKRNL privilege to SHOW or ATTACH an Ethernet device; | |
| alternatively, you can INSTALL the simulator with CMKRNL privilege. | |
| 4. If you use a second adapter to communicate to the host, SOME protocol | |
| that creates an I/O structure (SCS, DECNET, TCP) must be running on the | |
| adapter prior trying to connect with SIMH, or the host may crash. | |
| The execlet is not written to create an I/O structure for the device. | |
| Building on OpenVMS Alpha and OpenVMS Integrety (IA64): | |
| The current descrip.mms file will build simulators capable of using | |
| Ethernet support with them automatically. These currently are: VAX, | |
| VAX780, and PDP11. The descrip.mms driven builds will also build the | |
| pcap library and build and install the VCI execlet. | |
| 1. Fetch the VMS-PCAP zip file from: | |
| http://simh.trailing-edge.com/sources/vms-pcap.zip | |
| 2. Unzip it into the base of the SIMH distribution directory. | |
| 3. Build the simulator(s) with MMS or MMK: | |
| $ MMx {VAX,PDP11,PDP10, etc...} | |
| ------------------------------------------------------------------------------- | |
| VAX simulator support: | |
| An OpenVMS VAX v7.2 system with DECNET Phase IV, MultiNet 4.4a, and LAT 5.3 has | |
| been successfully run. Other testers have reported success booting NetBSD and | |
| OpenVMS VAX 5.5-2 also. | |
| PDP11 simulator support: | |
| An RT-11 v5.3 system with a freeware TCP/IP stack has been successfully run. | |
| Other testers have reported that RSX with DECNET and the NetBSD operating | |
| systems also work. RSTS/E v10.1 has preliminary support - RSTS/E boots and | |
| enables the XH (XQ) device - DECNET and LAT software have not been tested. | |
| The XU module has been tested by a third party for basic packet functionality | |
| under a modified RSX11M environment. I am unable to test it in-house until | |
| someone can arrange to send me a disk image containing a stock RSTS/E or | |
| RSX11M+ system image that also contains DECNET, LAT, and/or TCP/IP software. | |
| ------------------------------------------------------------------------------- | |
| How to debug problems with the Ethernet subsystems: | |
| PLEASE read the host-specific notes in sim_ether.c! | |
| While running SCP, the following commands can be used to enable debug messages: | |
| sim> SET DEBUG STDERR | |
| sim> SET XQ DEBUG=TRACE;CSR;VAR;WARN;SETUP;SANITY;REG;PACKET;DATA;ETH | |
| sim> SET XU DEBUG=ETH;TRACE;REG;WARN;PACKET;DATA | |
| Documentation of the functionality of these debug modifiers can be found in | |
| pdp11_xq.h and pdp11_xu.h. Inline debugging has replaced the previous #ifdef | |
| style of debugging, which required recompilation before debugging. | |
| ------------------------------------------------------------------------------- | |
| Things planned for future releases: | |
| 1. Full MOP implementation | |
| ------------------------------------------------------------------------------- | |
| Things which I need help with: | |
| 1. Information about Remote MOP processing | |
| 2. VAX/PDP-11 hardware diagnostics image files and docs, to test XQ thoroughly. | |
| 3. Feedback on operation with other VAX/PDP-11 OS's. | |
| ------------------------------------------------------------------------------- | |
| Please send all patches, questions, feedback, clarifications, and help to: | |
| david DOT hittner AT ngc DOT com | |
| Thanks, and Enjoy!! | |
| Dave | |
| =============================================================================== | |
| Change Log | |
| =============================================================================== | |
| 17-Nov-11 MP Added dynamic loading of libpcap on *nix platforms | |
| 30-Oct-11 MP Added support for vde (Virtual Distributed Ethernet) networking | |
| 29-Oct-11 MP Added support for integrated Tap networking interfaces on OSX | |
| 17-Aug-11 RMS Fix from Sergey Oboguev relating to XU and XQ Auto Config and | |
| vector assignments | |
| 12-Aug-11 MP Cleaned up payload length determination | |
| Fixed race condition detecting reflections when threaded | |
| reading and writing is enabled | |
| 07-Jul-11 MB VMS Pcap (from Mike Burke) | |
| - Fixed Alpha issues | |
| - Added OpenVMS Integrety support | |
| 20-Apr-11 MP Fixed save/restore behavior | |
| 12-Jan-11 DTH Added SHOW XU FILTERS modifier | |
| 11-Jan-11 DTH Corrected DEUNA/DELUA SELFTEST command, enabling use by | |
| VMS 3.7, VMS 4.7, and Ultrix 1.1 | |
| 09-Jan-11 MP Fixed missing crc data when USE_READER_THREAD is defined and | |
| crc's are needed (only the pdp11_xu) | |
| 16-Dec-10 MP added priority boost for read and write threads when | |
| USE_READER_THREAD does I/O in separate threads. This helps | |
| throughput since it allows these I/O bound threads to preempt | |
| the main thread (which is executing simulated instructions). | |
| 09-Dec-10 MP allowed more flexible parsing of MAC address strings | |
| 09-Dec-10 MP Added support to determine if network address conflicts exist | |
| 07-Dec-10 MP Reworked DECnet self detection to the more general approach | |
| of loopback self when any Physical Address is being set. | |
| 06-Dec-10 MP Added loopback processing support to pdp11_xu.c | |
| 06-Dec-10 MP Fixed loopback processing to correctly handle forward packets. | |
| 04-Dec-10 MP Changed eth_write to do nonblocking writes when | |
| USE_READER_THREAD is defined. | |
| 30-Nov-10 MP Fixed the fact that no broadcast packets were received by the DEUNA | |
| 29-Nov-10 MP Fixed interrupt dispatch issue which caused delivered packets | |
| (in and out) to sometimes not interrupt the CPU after processing. | |
| 17-Jun-10 MP Fixed bug in the AUTODIN II hash filtering. | |
| 14-Jun-10 MP Added support for integrated Tap networking interfaces on BSD | |
| platforms. | |
| 13-Jun-10 MP Added support for integrated Tap networking interfaces on Linux | |
| platforms. | |
| 31-May-10 MP Added support for more TOE (TCP Offload Engine) features for IPv4 | |
| network traffic from the host and/or from hosts on the LAN. These | |
| new TOE features are: LSO (Large Send Offload) and Jumbo packet | |
| fragmentation support. These features allow a simulated network | |
| device to support traffic when a host leverages a NIC's Large | |
| Send Offload capabilities to fragment and/or segment outgoing | |
| network traffic. Additionally a simulated network device can | |
| reasonably exist on a LAN which is configured to use Jumbo frames. | |
| 21-May-10 MP Added functionality to fix up IP header checksums to accommodate | |
| packets from a host with a NIC which has TOE (TCP Offload Engine) | |
| enabled which is expected to implement the checksum computations | |
| in hardware. Since we catch packets before they arrive at the | |
| NIC the expected checksum insertions haven't been performed yet. | |
| This processing is only done for packets sent from the host to | |
| the guest we're supporting. In general this will be a relatively | |
| small number of packets so it is done for all IP frame packets | |
| coming from the host to the guest. In order to make the | |
| determination of packets specifically arriving from the host we | |
| need to know the hardware MAC address of the host NIC. Currently | |
| determining a NIC's MAC address is relatively easy on Windows. | |
| The non-windows code works on linux and may work on other *nix | |
| platforms either as is or with slight modifications. The code, | |
| as implemented, only messes with this activity if the host | |
| interface MAC address can be determined. | |
| 20-May-10 MP Added general support to deal with receiving packets smaller | |
| than ETH_MIN_PACKET in length. These come from packets | |
| looped back by some bridging mechanism and need to be padded | |
| to the minimum frame size. A real NIC won't pass us any | |
| packets like that. This fix belongs here since this layer | |
| is responsible for interfacing to the physical layer | |
| devices, AND it belongs here to get CRC processing right. | |
| 15-Aug-08 MP Fixed transmitted packets to have the correct source MAC address. | |
| Fixed incorrect address filter setting calling eth_filter(). | |
| 07-Mar-08 MP Fixed the SCP visible SA registers to always display the | |
| ROM MAC address, even after it is changed by SET XQ MAC=. | |
| 07-Mar-08 MP Added changes so that the Console DELQA diagnostic (>>>TEST 82) | |
| will succeed. | |
| 03-Mar-08 MP Added DELQA-T (aka DELQA Plus) device emulation support. | |
| 06-Feb-08 MP Added dropped frame statistics to record when the receiver discards | |
| received packets due to the receiver being disabled, or due to the | |
| XQ device's packet receive queue being full. | |
| Fixed bug in receive processing when we're not polling. This could | |
| cause receive processing to never be activated again if we don't | |
| read all available packets via eth_read each time we get the | |
| opportunity. | |
| 31-Jan-08 MP Added the ability to Coalesce received packet interrupts. This | |
| is enabled by SET XQ POLL=DELAY=nnn where nnn is a number of | |
| microseconds to delay the triggering of an interrupt when a packet | |
| is received. | |
| 29-Jan-08 MP Added SET XQ POLL=DISABLE (aka SET XQ POLL=0) to operate without | |
| polling for packet read completion. | |
| 29-Jan-08 MP Changed the sanity and id timer mechanisms to use a separate timer | |
| unit so that transmit and receive activities can be dealt with | |
| by the normal xq_svc routine. | |
| Dynamically determine the timer polling rate based on the | |
| calibrated tmr_poll and clk_tps values of the simulator. | |
| 25-Jan-08 MP Enabled the SET XQ POLL to be meaningful if the simulator currently | |
| doesn't support idling. | |
| 25-Jan-08 MP Changed xq_debug_setup to use sim_debug instead of printf so that | |
| all debug output goes to the same place. | |
| 25-Jan-08 MP Restored the call to xq_svc after all successful calls to eth_write | |
| to allow receive processing to happen before the next event | |
| service time. This must have been inadvertently commented out | |
| while other things were being tested. | |
| 23-Jan-08 MP Added debugging support to display packet headers and packet data | |
| 18-Jun-07 RMS Added UNIT_IDLE flag | |
| 29-Oct-06 RMS Synced poll and clock | |
| 27-Jan-06 RMS Fixed unaligned accesses in XQB (found by Doug Carman) | |
| 07-Jan-06 RMS Fixed unaligned access bugs (found by Doug Carman) | |
| 07-Sep-05 DTH Removed unused variable | |
| 16-Aug-05 RMS Fixed C++ declaration and cast problems | |
| 05-Mar-08 MP Added optional multicast filtering support for doing | |
| LANCE style AUTODIN II based hashed filtering. | |
| 07-Feb-08 MP Added eth_show_dev to display Ethernet state | |
| Changed the return value from eth_read to return whether | |
| or not a packet was read. No existing callers used or | |
| checked constant return value that previously was being | |
| supplied. | |
| 29-Jan-08 MP Added eth_set_async to provide a mechanism (when | |
| USE_READER_THREAD is enabled) to allow packet reception | |
| to dynamically update the simulator event queue and | |
| potentially avoid polling for I/O. This provides a minimal | |
| overhead (no polling) maximal responsiveness for network | |
| activities. | |
| 29-Jan-08 MP Properly sequenced activities in eth_close to avoid a race | |
| condition when USE_READER_THREAD is enabled. | |
| 25-Jan-08 MP Changed the following when USE_READER_THREAD is enabled: | |
| - Fixed bug when the simulated device doesn't need crc | |
| in packet data which is read. | |
| - Added call to pcap_setmintocopy to minimize packet | |
| delivery latencies. | |
| - Added ethq_destroy and used it to avoid a memory leak in | |
| eth_close. | |
| - Properly cleaned up pthread mutexes in eth_close. | |
| Migrated to using sim_os_ms_sleep for a delay instead of | |
| a call to select(). | |
| Fixed the bpf filter used when no traffic is to be matched. | |
| Reworked eth_add_packet_crc32 implementation to avoid an | |
| extra buffer copy while reading packets. | |
| Fixed up #ifdef's relating to USE_SHARED so that setting | |
| USE_SHARED or USE_NETWORK will build a working network | |
| environment. | |
| 23-Jan-08 MP Reworked eth_packet_trace and eth_packet_trace_ex to allow | |
| only output Ethernet header+crc and provide a mechanism for | |
| the simulated device to display full packet data debugging. | |
| 17-May-07 DTH Fixed non-Ethernet device removal loop (from Naoki Hamada) | |
| 15-May-07 DTH Added dynamic loading of wpcap.dll; | |
| Corrected exceed max index bug in ethX lookup | |
| 04-May-07 DTH Corrected failure to look up Ethernet device names in | |
| the registry on Windows XP x64 | |
| 10-Jul-06 RMS Fixed linux conditionalization (from Chaskiel Grundman) | |
| 02-Jun-06 JDB Fixed compiler warning for incompatible sscanf parameter | |
| 15-Dec-05 DTH Patched eth_host_devices [remove non-Ethernet devices] | |
| (from Mark Pizzolato and Galen Tackett, 08-Jun-05) | |
| Patched eth_open [tun fix](from Antal Ritter, 06-Oct-05) | |
| 30-Nov-05 DTH Added option to regenerate CRC on received packets; some | |
| Ethernet devices need to pass it on to the simulation, and by | |
| the time libpcap/winpcap gets the packet, the host OS network | |
| layer has already stripped CRC out of the packet | |
| 01-Dec-04 DTH Added Windows user-defined adapter names (from Timothe Litt) | |
| 19-Mar-04 Release: | |
| 1. Genericized Sim_Ether code, reduced #ifdefs (David Hittner) | |
| 2. Further refinement of sim_ether, qualified more platforms (Mark Pizzolato) | |
| 3. Added XU module (David Hittner) | |
| 4. Corrected XQ interrupt signaling for PDP11s (David Hittner) | |
| 5. Added inline debugging support (David Hittner) | |
| ------------------------------------------------------------------------------- | |
| 26-Nov-03 Release: | |
| 1. Added VMS support to Sim_Ether; created pcap-vms port (Anders Ahgren) | |
| 2. Added DECNET duplicate detection for Windows (Mark Pizzolato) | |
| 3. Added BPF filtering to increase efficiency (Mark Pizzolato) | |
| 4. Corrected XQ Runt processing (Mark Pizzolato) | |
| 5. Corrected XQ Software Reset (Mark Pizzolato) | |
| 6. Corrected XQ Multicast/Promiscuous mode setting/resetting (Mark Pizzolato) | |
| 7. Added Universal TUN/TAP support (Mark Pizzolato) | |
| 8. Added FreeBSD support (Edward Brocklesby) | |
| 9. Corrected interrupts on XQB device (David Hittner) | |
| ------------------------------------------------------------------------------- | |
| 05-Jun-03 Release: | |
| 1. Added SET/SHOW XQ STATS (David Hittner) | |
| 2. Added SHOW XQ FILTERS (David Hittner) | |
| 3. Added ability to split rcv packets into multiple buffers (David Hittner) | |
| 4. Added explicit runt & giant packet processing (David Hittner) | |
| ------------------------------------------------------------------------------- | |
| 30-May-03 Release: | |
| 1. Corrected bug in xq_setmac introduced in v3.0 (multiple people) | |
| 2. Made XQ rcv buffer allocation dynamic to reduce scp size (David Hittner) | |
| 3. Optimized some structs, removed legacy variables (Mark Pizzolato) | |
| 4. Changed #ifdef WIN32 to _WIN32 for consistency (Mark Pizzolato) | |
| ------------------------------------------------------------------------------- | |
| 06-May-03 Release: | |
| 1. Added second XQ controller (David Hittner) | |
| 2. Added SIMH v3.0 compatibility (David Hittner) | |
| 3. Removed SET ADDRESS functionality (David Hittner) | |
| ------------------------------------------------------------------------------- | |
| 10-Apr-03 Release: | |
| 1. Added preliminary support for RSTS/E (David Hittner) | |
| 2. Added PDP-11 bootrom load via CSR flags (David Hittner) | |
| 3. Support for SPARC linux (Mark Pizzolato) | |
| ------------------------------------------------------------------------------- | |
| 11-Mar-03 Release: | |
| 1. Added support for RT-11 TCP/IP | |
| 2. Corrected interrupts (thanks to Tom Evans and Bob Supnik) | |
| 3. Moved change log to the bottom of the readme file, cleaned up document | |
| ------------------------------------------------------------------------------- | |
| 16-Jan-03 Release: | |
| 1. Added VMScluster support (thanks to Mark Pizzolato) | |
| 2. Verified VAX remote boot functionality (>>>B XQA0) | |
| 3. Added major performance enhancements (thanks to Mark Pizzolato again) | |
| 4. Changed _DEBUG tracers to XQ_DEBUG and ETH_DEBUG | |
| 5. Added local packet processing | |
| 6. Added system id broadcast | |
| ------------------------------------------------------------------------------- | |
| 08-Nov-02 Release: | |
| 1. Added USE_NETWORK conditional to Sim_Ether | |
| 2. Fixed behavior of SHOW XQ ETH if no devices exist | |
| 3. Added OpenBSD support to Sim_Ether (courtesy of Federico Schwindt) | |
| 4. Added ethX detection simplification (from Megan Gentry) | |
| =============================================================================== |