xv7: tcp/ip/ethernet 網路堆疊

程式來源 -- https://blog.mky.moe/mit6828/10-lab10/

2020 版 -- https://github.com/whileskies/xv6-labs-2020

執行結果

server

$ make server
python server.py 27772
listening on localhost port 27772
b'hello world!\x00'
b'hello world!\x00'
b'hello world!\x00'
b'hello world!\x00'
b'hello world!\x00'
b'hello world!\x00'
b'hello world!\x00'
b'hello world!\x00'
b'hello world!\x00'
b'hello world!\x00'

client

$ make qemu
...
mkfs/mkfs fs.img README user/xargstest.sh user/_cat user/_echo user/_forktest user/_grep user/_init user/_kill user/_ln user/_ls user/_mkdir user/_rm user/_sh user/_stressfs user/_usertests user/_wc user/_zombie user/_nettests user/_cowtest user/_uthread user/_call user/_testsh user/_kalloctest user/_bcachetest user/_alloctest user/_bigfile
nmeta 46 (boot, super, log blocks 30 inode blocks 13, bitmap blocks 1) blocks 1954 total 2000
balloc: first 799 blocks have been allocated
balloc: write bitmap block at sector 45
qemu-system-riscv64 -machine virt -bios none -kernel kernel/kernel -m 128M -smp 3 -nographic -drive file=fs.img,if=none,format=raw,id=x0 -device virtio-blk-device,drive=x0,bus=virtio-mmio-bus.0 -netdev user,id=net0,hostfwd=udp::29772-:2000 -object filter-dump,id=net0,netdev=net0,file=packets.pcap -device e1000,netdev=net0,bus=pcie.0

xv6 kernel is booting

virtio disk init 0
hart 1 starting
hart 2 starting
init: starting sh
$ nettests
nettests running on port 27772
testing one ping: OK
testing single-process pings: OK
testing multi-process pings: OK
testing DNS
DNS arecord for pdos.csail.mit.edu. is 128.52.129.126
DNS OK
all tests passed.