SqueakNOS July 2006

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5 participants
30 discussions

New release: RTL8139 support, TCP/IP "working", native improvements
by Gerardo Richarte 31 Jul '06

31 Jul '06

Download: http://sourceforge.net/project/showfiles.php?group_id=3891&package_id=3865 swiki: http://minnow.cc.gatech.edu/squeak/1762 This release includes two NetworkingDevices: LancePCIDevice and Realtek8139PCIDevice, the former implementing support, at least, for VMWare virtual cards, and the latter for a very common real network card. We have partially integrated NetSqueak (http://www.squeaksource.com/Net.html), which gives SqueakNOS support for most of the TCP/IP protocol suite, including basic, but working, TCP. The native part has changed a little bit too, specially a bug fix to allow bigger images to be booted (27MB was the old limit, now phisical memory should be it). Also the timer interrupt frequency is increased to 2KHz and ioRelinquishProcessor... effectively halts ('hlt') the processor. This decreases the power consumption, and introduced a few interactivity glitches that we should solve. gera

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SqueakNOS-gera.38: fixed Realtek8139PCIDevice transmiting of small packets
by Gerardo Richarte 31 Jul '06

31 Jul '06

Name: SqueakNOS-gera.38 Author: gera Time: 31 July 2006, 12:13:48 pm UUID: a695ed8b-726f-4b7d-bad3-b18675cfd66d Ancestors: SqueakNOS-gera.37 fixed Realtek8139PCIDevice transmiting of small packets. The card does not do autopadding, so we have to do it. The source for #sendNow:on: now reads str := anEthernetPacket asString padded: #right to: 60 with: $ .

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Latest news as of 29-Jul-2006
by Gerardo Richarte 29 Jul '06

29 Jul '06

As I said, Luciano has put a lot of work into his NetSqueak stuff lately, and he has something that's working now. With this I mean that SqueakNOS can now, for example, answer ARP requests and ICMP requests as before, but can also: "setup" Computer current networkingStack: (EthernetStack on: Computer current defaultNetworkInterface). Computer current networkingStack internetAddress: (InternetAddress fromString: '192.168.247.128'). Computer current networkingStack interface up. tcp := Computer current networkingStack ip tcp. "listen on 12345" strm := tcp listenAt: 12345. "now go out and telnet to this port" strm nextPutAll: 'hola amigo!'; flush. strm nextAvailable "connect" strm := tcp connectTo: (InternetAddress fromString: '192.168.247.1') port: 80. strm nextPutAll: 'GET / HTTP/1.0'; cr; cr; flush. strm nextAvailable (although "cr" will not work. Not sure, haven't reallt tested much) ----- Then, I also found a problem with the .image size SqueakNOS can handle, and fixed it. So stay tunned for a new .iso release soon. gera

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Net-gera.11: fixed checksum calculations
by Gerardo Richarte 29 Jul '06

29 Jul '06

Name: Net-gera.11 Author: gera Time: 29 July 2006, 2:03:01 pm UUID: 5daf5ca7-4093-4aec-b87c-080f16be164a Ancestors: Net-len.10 fixed checksum calculations: when the size was odd, the last byte was wrongly added to the sum (in computeChecksumFrom:to:). the IPPacket size was used instead of IPPacket length. This two are the same except when the card returns the padding bytes after the ethernet packet as part of the packet. This happens on Lance card for packets with legnth < 60. IPPacket length is the header field, so it's always correct.

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Net-gera.7: Connection setup improvement, and... instructions on how to test basic TCP
by Gerardo Richarte 28 Jul '06

28 Jul '06

Name: Net-gera.7 Author: gera Time: 27 July 2006, 7:54:54 pm UUID: 4c3e2d46-2b94-41c1-aa10-372dcf06f869 Ancestors: Net-len.6 TCP>>connectTo:port: and TCP>>listenAt: now return a NetStream instead of an InternalTCPSocket. (luciano's idea of course) TCP isKindOf: Working, you can test it with: "setup networking, you may need to chasnge the IP addres" Computer current networkingStack: (EthernetStack on: Computer current defaultNetworkInterface). Computer current networkingStack internetAddress: (InternetAddress fromString: '192.168.247.128'). Computer current networkingStack interface up. "open an incoming socket" strm := Computer current networkingStack ip tcp listenAt: 1234 "go out and telnet to your SqueakNOS, type something" strm nextPutAll: 'hola SqueakNOS'; flush. strm nextAvailable there's still a problem with ACKs, but a working version it's only some testing away :-)

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SqueakNOS-gera.37: Fix in LancePCIDevice for receive length
by Gerardo Richarte 28 Jul '06

28 Jul '06

Name: SqueakNOS-gera.37 Author: gera Time: 27 July 2006, 7:17:02 pm UUID: d95b8826-3ec1-44f4-ad4f-a8e2f5a2d42c Ancestors: SqueakNOS-gera.36 LancePCIDevice was reading 4 more bytes from the input buffer (apparently the hardware reports the size including the CRC or something... although this extra 4 bytes are always 0). This fixes that, and also tells the hardware to strip any padding bytes.

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SqueakNOS-gera.36: Integration with NetSqueak has begun!
by Gerardo Richarte 26 Jul '06

26 Jul '06

Name: SqueakNOS-gera.36 Author: gera Time: 26 July 2006, 5:43:16 pm UUID: 2483df5d-52b8-484a-81a0-f6abb3c97b6a Ancestors: SqueakNOS-gera.35 NetworkingInterface>>up, down, mtu (needed to integrate with NetSqueak)

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Posting commits comments to the list
by Pablo Iaria 26 Jul '06

26 Jul '06

Hi all, I'm re-sending this message because I didn't see it in the list archives (I think I'm having some king of trouble with my smtp server). Pablo.- Hi Gera, In spite of the fact I'm just following the advance of the project reading the mails posted to the list, it's nice to see the details of how sqNOS moving forward. I see these posts like small pieces of the documentation. As you said in a previous message you could boot the image without vmware; do you have plans of some kind of integration with Croquek? Keep doing this, great work!

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SqueakNOS-gera.35: Realtek8139PCIDevice is working quite nice!!!
by Gerardo Richarte 26 Jul '06

26 Jul '06

Name: SqueakNOS-gera.35 Author: gera Time: 26 July 2006, 11:15:05 am UUID: c32d4561-5457-4ed2-8285-121fab5dfe03 Ancestors: SqueakNOS-gera.34 cheapSend: renamed to sendNow: #sendNow: will stay I think, and will be part of the interface for NetowrkingDevices. NetworkingDevice>>input: implements ARP responses and ICMP replies (dumb, only enough to answer pings). NetworkingDevice>>output: calls sendNow: but it should rather use a SharedQueue and then... Realtek8139PCIDevice is working quite nice!!! sending, receiving and answering pings (via NetworkigDevice>>input:)

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SqueakNOS-gera.34: Fixed a race confition in PIC8259>>addHandler:forIRQ:
by Gerardo Richarte 25 Jul '06

25 Jul '06

Name: SqueakNOS-gera.34 Author: gera Time: 25 July 2006, 12:16:05 pm UUID: ccb9baa1-6e4e-4d05-9256-398e70c27450 Ancestors: SqueakNOS-gera.33 fixed a race condition in PIC8259>>addHandler:forIRQ: The hardware IRQ mask was changed before adding the new handler to the dispatchers dictionary. If an IRQ came in between this two lines, the IRQ handling failed. It was particulary visible when an IRQ was pending before enabling it. changed the transmitConfiguration: to NOT append the CRC after every Ethernet packet. I don't really want this, but I'm having problems making the RTL8139 consistently sending packets... this is one of the tests

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SqueakNOS July 2006