# $FreeBSD$
This directory holds scripts and a support program for multiple test cases
exercising multi-IP FIBs. At this time only IPv6 test cases are provided.
Makefile
reflect.c
Makefile just builds reflect, a program to echo data on a TCP or UDP
socket in very simplistic ways. It has a couple of options to provide
an address or port, a FIB to bind to or a FIB to add to a reflected
message as well as some "magic" keyword handling to let the intiators
control it.
initiator.sh and reflector.sh
intiator.sh runs two local test cases, one which shows a documented
limitation.
All further tests are either exercising the sending or receiving of
ICMP6, TCP or UDP packets with multiple FIBs. initiator.sh and
reflector.sh must run on two different nodes both having a network
interface in the same broadcast domain (be it cross-over or on a
bridge/switch). The tests will use the IPv6 benchmarking working
group (BMWG) prefix. The prefix is hard coded into some tests.
Control messages will synchronize reflector with initiator. The
reflector needs the reflect binary. Apart from that the scripts
depend on ping6, netcat, awk, tr and ipfw. The interface to use can
be set from the environment. The commands can be run like:
env IFACE=ifname sh intiator.sh
env IFACE=ifname sh reflector.sh
Both scripts also support a DEBUG environment variable for additional
output. A special value of 42 will enable sh(1) xtrace printing.
The output format is modeled after Test::Harness Perl as used in
tools/regression/ but not always compliant following the test case name.
NOTE: at the time of writing reflector.sh can trigger kernel races
unrelated to multi-FIB test leading to a panic(9). "delay" calls
are used to mitigate the problem some but are not always good enough.
It is suggested to run one test case at a time manually disabling
the others in both scripts.
forwarding.sh
forwarding.sh tests FIBs in the forwarding path, making sure that
packets tagged on input are leaving on the correct FIB.
The script must be run on three nodes with both edge nodes (left
and right) being connected to the middle node on separate interfaces.
The script operates on the same principles and requirements as the
two afore described ones. Environment options equally apply, with
the middle node also taking an IFACEFAR variable to name the interface
to the right. See the ASCII art at the beginning of the script for
details. The script needs to be told which node it is running with
the first argument:
env IFACE=ifname sh forwarding.sh left
env IFACE=leftifname IFACEFAR=rightifname sh forwarding.sh middle
env IFACE=ifname sh forwarding.sh right
# end
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