[Bug] looping inflates some packet counters #749
Description
Describe the bug
Some of the statistics become incorrect when the loop counter is greater than the default one.
To Reproduce
Steps to reproduce the behavior:
- Run tcpreplay with a file that includes both flow and non-flow packets without the
-lflag and note the counters. - Run tcpreplay again with two loops and note that "successful packets" are twice as high, whereas "flow packets" and "non-flow" are 4 times (2*2) as high.
- Run tcpreplay again with three loops and note that "successful packets" are three times as high, whereas "flow packets" and "non-flow" are 9 times (3*3) as high.
- ...and so on
Expected behavior
The counters are proportional to the number of loops rather than the square of the number of loops.
Screenshots
# tcpreplay --mbps 1 -i eth0 isakmp4500.pcap
Warning: isakmp4500.pcap was captured using a snaplen of 1536 bytes. This may mean you have truncated packets.
Actual: 35 packets (6246 bytes) sent in 0.049980 seconds
Rated: 124969.9 Bps, 0.999 Mbps, 700.28 pps
Flows: 4 flows, 80.03 fps, 27 flow packets, 8 non-flow
Statistics for network device: eth0
Successful packets: 35
Failed packets: 0
Truncated packets: 0
Retried packets (ENOBUFS): 0
Retried packets (EAGAIN): 0
# tcpreplay -l 2 --mbps 1 -i eth0 isakmp4500.pcap
Warning: isakmp4500.pcap was captured using a snaplen of 1536 bytes. This may mean you have truncated packets.
Warning: isakmp4500.pcap was captured using a snaplen of 1536 bytes. This may mean you have truncated packets.
Actual: 70 packets (12492 bytes) sent in 0.099940 seconds
Rated: 124994.9 Bps, 0.999 Mbps, 700.42 pps
Flows: 4 flows, 40.02 fps, 108 flow packets, 32 non-flow
Statistics for network device: eth0
Successful packets: 70
Failed packets: 0
Truncated packets: 0
Retried packets (ENOBUFS): 0
Retried packets (EAGAIN): 0
# tcpreplay -l 3 --mbps 1 -i eth0 isakmp4500.pcap
Warning: isakmp4500.pcap was captured using a snaplen of 1536 bytes. This may mean you have truncated packets.
Warning: isakmp4500.pcap was captured using a snaplen of 1536 bytes. This may mean you have truncated packets.
Warning: isakmp4500.pcap was captured using a snaplen of 1536 bytes. This may mean you have truncated packets.
Actual: 105 packets (18738 bytes) sent in 0.149910 seconds
Rated: 124994.9 Bps, 0.999 Mbps, 700.42 pps
Flows: 4 flows, 26.68 fps, 243 flow packets, 72 non-flow
Statistics for network device: eth0
Successful packets: 105
Failed packets: 0
Truncated packets: 0
Retried packets (ENOBUFS): 0
Retried packets (EAGAIN): 0
# tcpreplay -l 4 --mbps 1 -i eth0 isakmp4500.pcap
Warning: isakmp4500.pcap was captured using a snaplen of 1536 bytes. This may mean you have truncated packets.
Warning: isakmp4500.pcap was captured using a snaplen of 1536 bytes. This may mean you have truncated packets.
Warning: isakmp4500.pcap was captured using a snaplen of 1536 bytes. This may mean you have truncated packets.
Warning: isakmp4500.pcap was captured using a snaplen of 1536 bytes. This may mean you have truncated packets.
Actual: 140 packets (24984 bytes) sent in 0.199878 seconds
Rated: 124996.2 Bps, 0.999 Mbps, 700.42 pps
Flows: 4 flows, 20.01 fps, 432 flow packets, 128 non-flow
Statistics for network device: eth0
Successful packets: 140
Failed packets: 0
Truncated packets: 0
Retried packets (ENOBUFS): 0
Retried packets (EAGAIN): 0
System:
- OS: Ubuntu Linux 22.04 AMD64
- Tcpreplay master branch at commit 76644c2
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