userspace network stack

This is an extremely small and fast TCP/UDP/IP stack implementation on top of packet socket or netchannels interface.

Benchmarks:

Socket vs netchannels. 128 bytes chunks over gigabit ethernet test.
128 and 4096 bytes sending and receiving test over gigabit ethernet via netchannel.

Supported features:

TCP/UDP sending and receiving.
Timestamp, window scaling, MSS TCP options.
PAWS.
Slow start and congestion control.
Socket-like interface.
IP and ethernet processing code.
Complete retransmit algorithm.
Fast retransmit support.
Support for TCP listen state (peer-to-peer mode with single channel).
Netchannels interface and packet socket support.

TODO:

libunetstack.so or libtcp.so library interface.
SACK support

Userspace network stack was originally created to be user with peer-to-peer netchannels.

The latest version is always available in archive or
via git tree (web interface).