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