xv6-net

This project is implement TCP/IP Network Stack on xv6.

The network stack uses https://github.com/pandax381/microps

microps is a user-mode TCP/IP stack that I'm developing. This project ported it to the xv6 kernel.

Features

• Network device
  • PCI
    • Bus scan
    • Find device driver
  • Intel 8254x (e1000) driver
    • Initialization
    • Basic operation of RX/TX with DMA
    • Interrupt trap
    • Detect interrupt souce (if multiple NICs)
  • Device abstraction
    • Define structure for physical device abstraction (struct netdev)
    • Support multiple link protocols and physical devices
• Protocols
  • Ethernet
  • ARP
  • IP
  • ICMP
  • UDP
  • TCP
• Network Interface
  • Interface abstraction
    • Define structure for logical interface abstraction (struct netif)
    • Support multiple address family and logical interfaces
  • Configuration
    • Makeshift systemcalls and commands
      • ifget
      • ifset
      • ifup
      • ifdown
• Socket API
  • Systemcalls
    • socket
    • bind
    • connect
    • listen
    • accept
    • recv
    • send
    • recvfrom
    • sendto
  • Socket descriptor (compatible with File descriptor)
  • Socket address (struct sockaddr)

Task

• ARP resolution waiting queue (Currently discards data)
• TCP timer (Currently retransmission timer is not working)
• DHCP client
• DNS stub resolver

License

xv6: Under the MIT License. See LICENSE file.

Additional code: Under the MIT License. See header of each source code.