tc-dump is a network packet information dumping tool like tcpdump. It's based
on tc-bpf.
It uses tc-filter ingress to dump incoming packets, uses tc-filter egress to dump outcoming packets.
# ./tc-dump -h
Usage: ./tc-dump [options] [pcap-filter]
Available pcap-filter: see "man 7 pcap-filter"
Available options:
-d, --device strings network devices to run tc-dump
-m, --filter-mark uint32 filter mark for tc-dump
-k, --keep-tc-qdisc keep tc-qdisc when exit
pflag: help requestedAn output example:
ifindex: 2(enp1s0) dir=egress mark=0x0(0)
ETH: 56:00:03:e1:40:a6 -> fe:00:03:e1:40:a6, protocol IPv4
IPv4: 149.28.xx.yy -> 118.200.xxx.yy, header length 20, dscp 0x10, total length 144, id 0x93f6, TTL 64, protocol TCP
TCP: 22 -> 57680, seq 1116972675, ack 64800706, flags PSH,ACK, win 165
ifindex: 2(enp1s0) dir=egress mark=0x0(0)
ETH: 56:00:03:e1:40:a6 -> fe:00:03:e1:40:a6, protocol IPv4
IPv4: 149.28.xx.yy -> 118.200.xxx.yy, header length 20, dscp 0x10, total length 88, id 0x93f7, TTL 64, protocol TCP
TCP: 22 -> 57680, seq 1116972767, ack 64800706, flags PSH,ACK, win 165
ifindex: 2(enp1s0) dir=egress mark=0x0(0)
ETH: 56:00:03:e1:40:a6 -> fe:00:03:e1:40:a6, protocol IPv4
IPv4: 149.28.xx.yy -> 118.200.xxx.yy, header length 20, dscp 0x10, total length 128, id 0x93f8, TTL 64, protocol TCP
TCP: 22 -> 57680, seq 1116972803, ack 64800706, flags PSH,ACK, win 165
ifindex: 2(enp1s0) dir=egress mark=0x0(0)
ETH: 56:00:03:e1:40:a6 -> fe:00:03:e1:40:a6, protocol IPv4
IPv4: 149.28.xx.yy -> 118.200.xxx.yy, header length 20, dscp 0x10, total length 344, id 0x93f9, TTL 64, protocol TCP
TCP: 22 -> 57680, seq 1116972879, ack 64800706, flags PSH,ACK, win 165
ifindex: 2(enp1s0) dir=egress mark=0x0(0)
ETH: 56:00:03:e1:40:a6 -> fe:00:03:e1:40:a6, protocol IPv4
IPv4: 149.28.xx.yy -> 118.200.xxx.yy, header length 20, dscp 0x10, total length 384, id 0x93fa, TTL 64, protocol TCP
TCP: 22 -> 57680, seq 1116973171, ack 64800706, flags PSH,ACK, win 165tc-dump requires >= 5.2 kernel to run.
With latest libpcap installed, build tc-dump with:
go generate
CGO_ENABLED=1 go build
# ignore cgo warningsInstall latest libpcap on Ubuntu:
# Get latest libpcap from https://www.tcpdump.org/
wget https://www.tcpdump.org/release/libpcap-1.10.4.tar.gz
cd libpcap-1.10.4
./configure --disable-rdma --disable-shared --disable-usb --disable-netmap --disable-bluetooth --disable-dbus --without-libnl
make
sudo make install
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