README
1# $FreeBSD$
2
3This directory holds scripts and a support program for multiple test cases
4exercising multi-IP FIBs. At this time only IPv6 test cases are provided.
5
6Makefile
7reflect.c
8
9 Makefile just builds reflect, a program to echo data on a TCP or UDP
10 socket in very simplistic ways. It has a couple of options to provide
11 an address or port, a FIB to bind to or a FIB to add to a reflected
12 message as well as some "magic" keyword handling to let the intiators
13 control it.
14
15initiator.sh and reflector.sh
16
17 intiator.sh runs two local test cases, one which shows a documented
18 limitation.
19
20 All further tests are either exercising the sending or receiving of
21 ICMP6, TCP or UDP packets with multiple FIBs. initiator.sh and
22 reflector.sh must run on two different nodes both having a network
23 interface in the same broadcast domain (be it cross-over or on a
24 bridge/switch). The tests will use the IPv6 benchmarking working
25 group (BMWG) prefix. The prefix is hard coded into some tests.
26 Control messages will synchronize reflector with initiator. The
27 reflector needs the reflect binary. Apart from that the scripts
28 depend on ping6, netcat, awk, tr and ipfw. The interface to use can
29 be set from the environment. The commands can be run like:
30
31 env IFACE=ifname sh intiator.sh
32 env IFACE=ifname sh reflector.sh
33
34 Both scripts also support a DEBUG environment variable for additional
35 output. A special value of 42 will enable sh(1) xtrace printing.
36
37 The output format is modeled after Test::Harness Perl as used in
38 tools/regression/ but not always compliant following the test case name.
39
40 NOTE: at the time of writing reflector.sh can trigger kernel races
41 unrelated to multi-FIB test leading to a panic(9). "delay" calls
42 are used to mitigate the problem some but are not always good enough.
43 It is suggested to run one test case at a time manually disabling
44 the others in both scripts.
45
46forwarding.sh
47
48 forwarding.sh tests FIBs in the forwarding path, making sure that
49 packets tagged on input are leaving on the correct FIB.
50 The script must be run on three nodes with both edge nodes (left
51 and right) being connected to the middle node on separate interfaces.
52
53 The script operates on the same principles and requirements as the
54 two afore described ones. Environment options equally apply, with
55 the middle node also taking an IFACEFAR variable to name the interface
56 to the right. See the ASCII art at the beginning of the script for
57 details. The script needs to be told which node it is running with
58 the first argument:
59
60 env IFACE=ifname sh forwarding.sh left
61 env IFACE=leftifname IFACEFAR=rightifname sh forwarding.sh middle
62 env IFACE=ifname sh forwarding.sh right
63
64# end
65