1 How to use the Linux packet generator module.
3 1. Enable CONFIG_NET_PKTGEN to compile and build pktgen.o, install it
4 in the place where insmod may find it.
5 2. Cut script "ipg" (see below).
6 3. Edit script to set preferred device and destination IP address.
7 3a. Create more scripts for different interfaces. Up to thirty-two
8 pktgen processes can be configured and run at once by using the
9 32 /proc/net/pktgen/pg* files.
10 4. Run in shell: ". ipg"
11 5. After this two commands are defined:
12 A. "pg" to start generator and to get results.
13 B. "pgset" to change generator parameters. F.e.
14 pgset "multiskb 1" use multiple SKBs for packet generation
15 pgset "multiskb 0" use single SKB for all transmits
16 pgset "pkt_size 9014" sets packet size to 9014
17 pgset "frags 5" packet will consist of 5 fragments
18 pgset "count 200000" sets number of packets to send, set to zero
19 for continious sends untill explicitly
21 pgset "ipg 5000" sets artificial gap inserted between packets
23 pgset "dst 10.0.0.1" sets IP destination address
24 (BEWARE! This generator is very aggressive!)
25 pgset "dst_min 10.0.0.1" Same as dst
26 pgset "dst_max 10.0.0.254" Set the maximum destination IP.
27 pgset "src_min 10.0.0.1" Set the minimum (or only) source IP.
28 pgset "src_max 10.0.0.254" Set the maximum source IP.
29 pgset "dstmac 00:00:00:00:00:00" sets MAC destination address
30 pgset "srcmac 00:00:00:00:00:00" sets MAC source address
31 pgset "src_mac_count 1" Sets the number of MACs we'll range through. The
32 'minimum' MAC is what you set with srcmac.
33 pgset "dst_mac_count 1" Sets the number of MACs we'll range through. The
34 'minimum' MAC is what you set with dstmac.
35 pgset "flag [name]" Set a flag to determine behaviour. Current flags
36 are: IPSRC_RND #IP Source is random (between min/max),
37 IPDST_RND, UDPSRC_RND,
38 UDPDST_RND, MACSRC_RND, MACDST_RND
39 pgset "udp_src_min 9" set UDP source port min, If < udp_src_max, then
40 cycle through the port range.
41 pgset "udp_src_max 9" set UDP source port max.
42 pgset "udp_dst_min 9" set UDP destination port min, If < udp_dst_max, then
43 cycle through the port range.
44 pgset "udp_dst_max 9" set UDP destination port max.
45 pgset stop aborts injection
47 Also, ^C aborts generator.
55 PGDEV=/proc/net/pktgen/pg0
62 result=`cat $PGDEV | fgrep "Result: OK:"`
63 if [ "$result" = "" ]; then
64 cat $PGDEV | fgrep Result: