three new netmap tools: pcap player, link emulator, load distributor

[Slawa Olhovchenkov]

On Sun, Feb 21, 2016 at 10:18:36AM -0800, Luigi Rizzo wrote:

> Hi,
> I have put some new tools on the github's netmap page
> https://github.com/luigirizzo/netmap in the apps/ directory
> 
> All are under a BSD license.
> 
> nmreplay
>   a fast pcap replay tool (a-la tcpreplay) with programmable rate.
>   Joint work with a few of my students in Pisa.
> 
> ​tlem
>   a link emulator, dummynet style (but without the packet filter),
>   sustaining 20Mpps/ 40Gbit. TLEM will be presented at asiabsdcon
>   and a paper is at http://info.iet.unipi.it/~luigi/research.html
> 
> lb
>   a packet distributor that reads from a netmap port and distributes
>   traffic to multiple netmap ports, using ze​ro copy and a user-defined
>   hash function. This will be useful e.g. for people running multiple
>   instances of traffic monitors such as bro, suricata and the like.
>   It is not by chance that LB was originally developed by Seth Hall
>   at Broala, who kindly made it available, and Giuseppe Lettieri who
>   added a few features.
> 
> Feedback welcome

while (eth_type == 0x8100 /* VLAN */ ) { -- endianess depends