IPNoise

IPNoise - decentralized network engine for free internet

Main parts

IPNoise QEMU virtual PCI device

packages/ipnoise-qemu/qemu/hw/net/ipnoise.c (IPNoise virtual PCI device)
packages/ipnoise-qemu/qemu/hw/net/ipnoise.h (IPNoise virtual PCI device)

Involved in communicating between guest OS and host OS

• for sending/receiving packets
• for opening host OS sockets and etc..

IPNoise Linux kernel PCI driver for IPNoise QEMU virtual PCI device

packages/ipnoise-kernel/kernel/drivers/net/ipnoise.c (IPNoise PCI driver + new protocol family PF_HOSTOS)
packages/ipnoise-kernel/kernel/drivers/net/ipnoise.h (IPNoise PCI driver + new protocol family PF_HOSTOS)
packages/ipnoise-kernel/kernel/include/linux/pci_ids.h (IPNoise PCI vendor and device IDs)
packages/ipnoise-kernel/kernel/drivers/net/tun.c (IPNoise virtual network devices support)
packages/ipnoise-kernel/kernel/include/uapi/linux/if_tun.h (IPNoise virtual network devices support)
packages/ipnoise-kernel/kernel/net/ipv4/arp.c (IPNoise's hardware addresses support)
packages/ipnoise-kernel/kernel/net/core/rtnetlink.c (IPNoise's hardware addresses support)
packages/ipnoise-kernel/kernel/net/core/neighbour.c (IPNoise's hardware addresses support)

• Communicating between Linux kernel and IPNoise QEMU virtual PCI device
• New sockets protocol family - PF_HOSTOS (for opening host OS sockets, from user space)

IPNoise iproute2 support

packages/ipnoise-iproute2/iproute2-rc/lib/ll_addr.c (IPNoise's hardware addresses support)
packages/ipnoise-iproute2/iproute2-rc/lib/ll_types.c (IPNoise's hardware addresses support)

Build

    ## start downloading the Fedora ISO
    sudo mkdir -p /mnt/multimedia/iso
    sudo chown $USER:$USER /mnt/multimedia/iso
    cd /mnt/multimedia/iso
    wget -c http://ftp.colocall.net/pub/fedora/linux/releases/26/Server/x86_64/iso/Fedora-Server-dvd-x86_64-26-1.5.iso
    cd -

    ## clone IPNoise
    git clone https://github.com/m0r1k/IPNoise.git
    cd IPNoise/packages/

    ## install deps
    make setup

    ## make packages
    make lin64

    ## make qemu
    make qemu-lin64

    ## install all to out
    make install-lin64

    ## prepare virtual machine
    cd ipnoise-builder/
    sudo losetup -f
    sudo mkdir -p /mnt/iso/
    sudo mount -o loop /mnt/multimedia/iso/Fedora-Server-dvd-x86_64-26-1.5.iso /mnt/iso/
    sudo cp -r /mnt/iso .
    sudo chown -R $USER:$USER iso
    find iso -type d | xargs -i chmod 0755 {}
    find iso -type f | xargs -i chmod 0644 {}
    sudo umount /mnt/iso
    make install_os
    ## you can view installation via command: 'vncviewer :0'
    cd ../

    ## after installation you can start virtual machine by command:
    make -C ipnoise-builder start

How-to

    ## how to connect to the IPNoise virtual machine via PF_HOSTOS sockets:
    ssh -p 2222 root@127.0.0.1 ## root/root

    ## how to enable debug for IPNoise Linux kernel module and IPNoise QEMU PCI device:
    ## run inside IPNoise virtual machine:
    echo 50 > /sys/devices/pci0000\:00/0000\:00\:03.0/debug

Known issues:

    IPnoise Linux kernel driver and IPNoise QEMU PCI device doesn't support smp > 1 yet,
    so, please, be sure, you are starting a virtual machine with smp = 1

    The problem in the:
         ipnoise_interrupt -> ipnoise_downlink_process_packet

    Information from IPNoise QEMU PCI device will be stored in the
        hostos->pcidev.last_packet
        and after that sk->sk_data_ready(sk); or sk->sk_state_change(sk); will be called
        sock will be awakened and data will be copied to the user space,
        BUT
        if we will get another interrupt till data will be copied in the userspace
        (another HostOS event will occur), then hostos->pcidev.last_packet will be rewritten
        and traffic data will be corrupted.

    This issue will be fixed soon, but workaround, for now - to start a virtual machine with smp = 1 (default now)

Notes:

    Porting to the new kernel:

        Don't forger to check:

        packages/ipnoise-common/ipnoise.h

        constants PF_HOSTOS, AF_HOSTOS must be the same and free (44) in the
            ipnoise-kernel/kernel/include/linux/socket.h (don't forget update AF_MAX constant)
            ipnoise-devel/rootfs/root/bin/tcp_01.pl
            ipnoise-devel/rootfs/root/bin/echo-client.pl
            ipnoise-devel/rootfs/root/test.c
            ipnoise-devel/rootfs/root/tcp_01.c

        constant IFF_IPNOISE must be the same and free (0x0004 now) in the
            ipnoise-common/ipnoise.h
            ipnoise-kernel/kernel/include/uapi/linux/if_tun.h