K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2015-04-19T17:07:51.150194Z
K 7
svn:log
V 775
Update pkt-gen to optionally use randomised source/destination
IPv4 addresses/ports.

When doing traffic testing of actual code that /does/ things to the
packet (rather than say, 'bridge.c'), it's typically a good idea to
use a variety of cache-busting and flow-tracking-busting packet
spreads.  The pkt-gen method of testing an IP range was to walk
it linearly - which is fine, but not useful enough.

This can be used to completely randomize the source/destination
addresses (eg to test out flow-tracking-busting) and to keep the
destination fixed whilst randomising the source (eg to test out
what a DDoS may look like.)

Tested:

* Intel ixgbe 10G (82599) netmap

Differential Revision:	https://reviews.freebsd.org/D2309
MFC after:	2 weeks
Sponsored by:	Norse Corp, Inc.

END