1================
2bpftool-net
3================
4-------------------------------------------------------------------------------
5tool for inspection of netdev/tc related bpf prog attachments
6-------------------------------------------------------------------------------
7
8:Manual section: 8
9
10SYNOPSIS
11========
12
13	**bpftool** [*OPTIONS*] **net** *COMMAND*
14
15	*OPTIONS* := { [{ **-j** | **--json** }] [{ **-p** | **--pretty** }] }
16
17	*COMMANDS* :=
18	{ **show** | **list** } [ **dev** name ] | **help**
19
20NET COMMANDS
21============
22
23|	**bpftool** **net { show | list } [ dev name ]**
24|	**bpftool** **net help**
25
26DESCRIPTION
27===========
28	**bpftool net { show | list } [ dev name ]**
29                  List bpf program attachments in the kernel networking subsystem.
30
31                  Currently, only device driver xdp attachments and tc filter
32                  classification/action attachments are implemented, i.e., for
33                  program types **BPF_PROG_TYPE_SCHED_CLS**,
34                  **BPF_PROG_TYPE_SCHED_ACT** and **BPF_PROG_TYPE_XDP**.
35                  For programs attached to a particular cgroup, e.g.,
36                  **BPF_PROG_TYPE_CGROUP_SKB**, **BPF_PROG_TYPE_CGROUP_SOCK**,
37                  **BPF_PROG_TYPE_SOCK_OPS** and **BPF_PROG_TYPE_CGROUP_SOCK_ADDR**,
38                  users can use **bpftool cgroup** to dump cgroup attachments.
39                  For sk_{filter, skb, msg, reuseport} and lwt/seg6
40                  bpf programs, users should consult other tools, e.g., iproute2.
41
42                  The current output will start with all xdp program attachments, followed by
43                  all tc class/qdisc bpf program attachments. Both xdp programs and
44                  tc programs are ordered based on ifindex number. If multiple bpf
45                  programs attached to the same networking device through **tc filter**,
46                  the order will be first all bpf programs attached to tc classes, then
47                  all bpf programs attached to non clsact qdiscs, and finally all
48                  bpf programs attached to root and clsact qdisc.
49
50	**bpftool net help**
51		  Print short help message.
52
53OPTIONS
54=======
55	-h, --help
56		  Print short generic help message (similar to **bpftool help**).
57
58	-V, --version
59		  Print version number (similar to **bpftool version**).
60
61	-j, --json
62		  Generate JSON output. For commands that cannot produce JSON, this
63		  option has no effect.
64
65	-p, --pretty
66		  Generate human-readable JSON output. Implies **-j**.
67
68	-d, --debug
69		  Print all logs available from libbpf, including debug-level
70		  information.
71
72EXAMPLES
73========
74
75| **# bpftool net**
76
77::
78
79      xdp:
80      eth0(2) driver id 198
81
82      tc:
83      eth0(2) htb name prefix_matcher.o:[cls_prefix_matcher_htb] id 111727 act []
84      eth0(2) clsact/ingress fbflow_icmp id 130246 act []
85      eth0(2) clsact/egress prefix_matcher.o:[cls_prefix_matcher_clsact] id 111726
86      eth0(2) clsact/egress cls_fg_dscp id 108619 act []
87      eth0(2) clsact/egress fbflow_egress id 130245
88
89|
90| **# bpftool -jp net**
91
92::
93
94    [{
95            "xdp": [{
96                    "devname": "eth0",
97                    "ifindex": 2,
98                    "mode": "driver",
99                    "id": 198
100                }
101            ],
102            "tc": [{
103                    "devname": "eth0",
104                    "ifindex": 2,
105                    "kind": "htb",
106                    "name": "prefix_matcher.o:[cls_prefix_matcher_htb]",
107                    "id": 111727,
108                    "act": []
109                },{
110                    "devname": "eth0",
111                    "ifindex": 2,
112                    "kind": "clsact/ingress",
113                    "name": "fbflow_icmp",
114                    "id": 130246,
115                    "act": []
116                },{
117                    "devname": "eth0",
118                    "ifindex": 2,
119                    "kind": "clsact/egress",
120                    "name": "prefix_matcher.o:[cls_prefix_matcher_clsact]",
121                    "id": 111726,
122                },{
123                    "devname": "eth0",
124                    "ifindex": 2,
125                    "kind": "clsact/egress",
126                    "name": "cls_fg_dscp",
127                    "id": 108619,
128                    "act": []
129                },{
130                    "devname": "eth0",
131                    "ifindex": 2,
132                    "kind": "clsact/egress",
133                    "name": "fbflow_egress",
134                    "id": 130245,
135                }
136            ]
137        }
138    ]
139
140
141SEE ALSO
142========
143	**bpf**\ (2),
144	**bpf-helpers**\ (7),
145	**bpftool**\ (8),
146	**bpftool-prog**\ (8),
147	**bpftool-map**\ (8),
148	**bpftool-cgroup**\ (8),
149	**bpftool-feature**\ (8),
150	**bpftool-perf**\ (8),
151	**bpftool-btf**\ (8)
152