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tools/bpf: bpftool: add net support
Add "bpftool net" support. Networking devices are enumerated to dump device index/name associated with xdp progs. For each networking device, tc classes and qdiscs are enumerated in order to check their bpf filters. In addition, root handle and clsact ingress/egress are also checked for bpf filters. Not all filter information is printed out. Only ifindex, kind, filter name, prog_id and tag are printed out, which are good enough to show attachment information. If the filter action is a bpf action, its bpf program id, bpf name and tag will be printed out as well. For example, $ ./bpftool net xdp [ ifindex 2 devname eth0 prog_id 198 ] tc_filters [ ifindex 2 kind qdisc_htb name prefix_matcher.o:[cls_prefix_matcher_htb] prog_id 111727 tag d08fe3b4319bc2fd act [] ifindex 2 kind qdisc_clsact_ingress name fbflow_icmp prog_id 130246 tag 3f265c7f26db62c9 act [] ifindex 2 kind qdisc_clsact_egress name prefix_matcher.o:[cls_prefix_matcher_clsact] prog_id 111726 tag 99a197826974c876 ifindex 2 kind qdisc_clsact_egress name cls_fg_dscp prog_id 108619 tag dc4630674fd72dcc act [] ifindex 2 kind qdisc_clsact_egress name fbflow_egress prog_id 130245 tag 72d2d830d6888d2c ] $ ./bpftool -jp net [{ "xdp": [{ "ifindex": 2, "devname": "eth0", "prog_id": 198 } ], "tc_filters": [{ "ifindex": 2, "kind": "qdisc_htb", "name": "prefix_matcher.o:[cls_prefix_matcher_htb]", "prog_id": 111727, "tag": "d08fe3b4319bc2fd", "act": [] },{ "ifindex": 2, "kind": "qdisc_clsact_ingress", "name": "fbflow_icmp", "prog_id": 130246, "tag": "3f265c7f26db62c9", "act": [] },{ "ifindex": 2, "kind": "qdisc_clsact_egress", "name": "prefix_matcher.o:[cls_prefix_matcher_clsact]", "prog_id": 111726, "tag": "99a197826974c876" },{ "ifindex": 2, "kind": "qdisc_clsact_egress", "name": "cls_fg_dscp", "prog_id": 108619, "tag": "dc4630674fd72dcc", "act": [] },{ "ifindex": 2, "kind": "qdisc_clsact_egress", "name": "fbflow_egress", "prog_id": 130245, "tag": "72d2d830d6888d2c" } ] } ] Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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133
tools/bpf/bpftool/Documentation/bpftool-net.rst
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133
tools/bpf/bpftool/Documentation/bpftool-net.rst
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@ -0,0 +1,133 @@
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================
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bpftool-net
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================
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-------------------------------------------------------------------------------
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tool for inspection of netdev/tc related bpf prog attachments
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-------------------------------------------------------------------------------
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:Manual section: 8
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SYNOPSIS
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========
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**bpftool** [*OPTIONS*] **net** *COMMAND*
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*OPTIONS* := { [{ **-j** | **--json** }] [{ **-p** | **--pretty** }] }
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*COMMANDS* :=
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{ **show** | **list** } [ **dev** name ] | **help**
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NET COMMANDS
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============
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| **bpftool** **net { show | list } [ dev name ]**
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| **bpftool** **net help**
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DESCRIPTION
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===========
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**bpftool net { show | list } [ dev name ]**
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List all networking device driver and tc attachment in the system.
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Output will start with all xdp program attachment, followed by
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all tc class/qdisc bpf program attachments. Both xdp programs and
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tc programs are ordered based on ifindex number. If multiple bpf
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programs attached to the same networking device through **tc filter**,
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the order will be first all bpf programs attached to tc classes, then
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all bpf programs attached to non clsact qdiscs, and finally all
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bpf programs attached to root and clsact qdisc.
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**bpftool net help**
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Print short help message.
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OPTIONS
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=======
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-h, --help
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Print short generic help message (similar to **bpftool help**).
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-v, --version
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Print version number (similar to **bpftool version**).
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-j, --json
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Generate JSON output. For commands that cannot produce JSON, this
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option has no effect.
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-p, --pretty
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Generate human-readable JSON output. Implies **-j**.
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EXAMPLES
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========
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| **# bpftool net**
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::
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xdp [
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ifindex 2 devname eth0 prog_id 198
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]
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tc_filters [
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ifindex 2 kind qdisc_htb name prefix_matcher.o:[cls_prefix_matcher_htb]
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prog_id 111727 tag d08fe3b4319bc2fd act []
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ifindex 2 kind qdisc_clsact_ingress name fbflow_icmp
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prog_id 130246 tag 3f265c7f26db62c9 act []
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ifindex 2 kind qdisc_clsact_egress name prefix_matcher.o:[cls_prefix_matcher_clsact]
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prog_id 111726 tag 99a197826974c876
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ifindex 2 kind qdisc_clsact_egress name cls_fg_dscp
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prog_id 108619 tag dc4630674fd72dcc act []
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ifindex 2 kind qdisc_clsact_egress name fbflow_egress
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prog_id 130245 tag 72d2d830d6888d2c
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]
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| **# bpftool -jp net**
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::
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[{
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"xdp": [{
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"ifindex": 2,
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"devname": "eth0",
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"prog_id": 198
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}
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],
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"tc_filters": [{
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"ifindex": 2,
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"kind": "qdisc_htb",
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"name": "prefix_matcher.o:[cls_prefix_matcher_htb]",
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"prog_id": 111727,
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"tag": "d08fe3b4319bc2fd",
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"act": []
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},{
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"ifindex": 2,
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"kind": "qdisc_clsact_ingress",
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"name": "fbflow_icmp",
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"prog_id": 130246,
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"tag": "3f265c7f26db62c9",
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"act": []
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},{
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"ifindex": 2,
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"kind": "qdisc_clsact_egress",
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"name": "prefix_matcher.o:[cls_prefix_matcher_clsact]",
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"prog_id": 111726,
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"tag": "99a197826974c876"
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},{
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"ifindex": 2,
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"kind": "qdisc_clsact_egress",
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"name": "cls_fg_dscp",
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"prog_id": 108619,
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"tag": "dc4630674fd72dcc",
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"act": []
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},{
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"ifindex": 2,
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"kind": "qdisc_clsact_egress",
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"name": "fbflow_egress",
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"prog_id": 130245,
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"tag": "72d2d830d6888d2c"
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}
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]
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}
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]
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SEE ALSO
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========
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**bpftool**\ (8), **bpftool-prog**\ (8), **bpftool-map**\ (8)
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@ -16,7 +16,7 @@ SYNOPSIS
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**bpftool** **version**
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*OBJECT* := { **map** | **program** | **cgroup** | **perf** }
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*OBJECT* := { **map** | **program** | **cgroup** | **perf** | **net** }
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*OPTIONS* := { { **-V** | **--version** } | { **-h** | **--help** }
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| { **-j** | **--json** } [{ **-p** | **--pretty** }] }
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@ -32,6 +32,8 @@ SYNOPSIS
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*PERF-COMMANDS* := { **show** | **list** | **help** }
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*NET-COMMANDS* := { **show** | **list** | **help** }
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DESCRIPTION
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===========
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*bpftool* allows for inspection and simple modification of BPF objects
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@ -58,4 +60,4 @@ OPTIONS
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SEE ALSO
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========
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**bpftool-map**\ (8), **bpftool-prog**\ (8), **bpftool-cgroup**\ (8)
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**bpftool-perf**\ (8)
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**bpftool-perf**\ (8), **bpftool-net**\ (8)
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@ -494,10 +494,10 @@ _bpftool()
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_filedir
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return 0
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;;
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tree)
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_filedir
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return 0
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;;
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tree)
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_filedir
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return 0
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;;
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attach|detach)
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local ATTACH_TYPES='ingress egress sock_create sock_ops \
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device bind4 bind6 post_bind4 post_bind6 connect4 \
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@ -552,6 +552,15 @@ _bpftool()
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;;
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esac
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;;
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net)
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case $command in
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*)
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[[ $prev == $object ]] && \
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COMPREPLY=( $( compgen -W 'help \
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show list' -- "$cur" ) )
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;;
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esac
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;;
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esac
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} &&
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complete -F _bpftool bpftool
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@ -85,7 +85,7 @@ static int do_help(int argc, char **argv)
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" %s batch file FILE\n"
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" %s version\n"
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"\n"
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" OBJECT := { prog | map | cgroup | perf }\n"
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" OBJECT := { prog | map | cgroup | perf | net }\n"
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" " HELP_SPEC_OPTIONS "\n"
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"",
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bin_name, bin_name, bin_name);
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@ -215,6 +215,7 @@ static const struct cmd cmds[] = {
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{ "map", do_map },
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{ "cgroup", do_cgroup },
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{ "perf", do_perf },
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{ "net", do_net },
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{ "version", do_version },
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{ 0 }
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};
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@ -136,6 +136,7 @@ int do_map(int argc, char **arg);
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int do_event_pipe(int argc, char **argv);
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int do_cgroup(int argc, char **arg);
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int do_perf(int argc, char **arg);
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int do_net(int argc, char **arg);
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int prog_parse_fd(int *argc, char ***argv);
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int map_parse_fd(int *argc, char ***argv);
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*/
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int btf_dumper_type(const struct btf_dumper *d, __u32 type_id,
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const void *data);
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struct nlattr;
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struct ifinfomsg;
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struct tcmsg;
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int do_xdp_dump(struct ifinfomsg *ifinfo, struct nlattr **tb);
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int do_filter_dump(struct tcmsg *ifinfo, struct nlattr **tb, const char *kind);
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#endif
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233
tools/bpf/bpftool/net.c
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233
tools/bpf/bpftool/net.c
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// SPDX-License-Identifier: GPL-2.0+
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// Copyright (C) 2018 Facebook
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#define _GNU_SOURCE
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <libbpf.h>
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#include <net/if.h>
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#include <linux/if.h>
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#include <linux/rtnetlink.h>
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#include <linux/tc_act/tc_bpf.h>
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#include <sys/socket.h>
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#include <bpf.h>
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#include <nlattr.h>
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#include "main.h"
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#include "netlink_dumper.h"
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struct bpf_netdev_t {
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int *ifindex_array;
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int used_len;
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int array_len;
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int filter_idx;
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};
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struct tc_kind_handle {
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char kind[64];
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int handle;
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};
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struct bpf_tcinfo_t {
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struct tc_kind_handle *handle_array;
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int used_len;
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int array_len;
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bool is_qdisc;
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};
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static int dump_link_nlmsg(void *cookie, void *msg, struct nlattr **tb)
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{
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struct bpf_netdev_t *netinfo = cookie;
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struct ifinfomsg *ifinfo = msg;
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if (netinfo->filter_idx > 0 && netinfo->filter_idx != ifinfo->ifi_index)
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return 0;
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if (netinfo->used_len == netinfo->array_len) {
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netinfo->ifindex_array = realloc(netinfo->ifindex_array,
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(netinfo->array_len + 16) * sizeof(int));
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netinfo->array_len += 16;
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}
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netinfo->ifindex_array[netinfo->used_len++] = ifinfo->ifi_index;
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return do_xdp_dump(ifinfo, tb);
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}
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static int dump_class_qdisc_nlmsg(void *cookie, void *msg, struct nlattr **tb)
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{
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struct bpf_tcinfo_t *tcinfo = cookie;
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struct tcmsg *info = msg;
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if (tcinfo->is_qdisc) {
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/* skip clsact qdisc */
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if (tb[TCA_KIND] &&
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strcmp(nla_data(tb[TCA_KIND]), "clsact") == 0)
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return 0;
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if (info->tcm_handle == 0)
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return 0;
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}
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if (tcinfo->used_len == tcinfo->array_len) {
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tcinfo->handle_array = realloc(tcinfo->handle_array,
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(tcinfo->array_len + 16) * sizeof(struct tc_kind_handle));
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tcinfo->array_len += 16;
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}
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tcinfo->handle_array[tcinfo->used_len].handle = info->tcm_handle;
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snprintf(tcinfo->handle_array[tcinfo->used_len].kind,
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sizeof(tcinfo->handle_array[tcinfo->used_len].kind),
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"%s_%s",
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tcinfo->is_qdisc ? "qdisc" : "class",
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tb[TCA_KIND] ? nla_getattr_str(tb[TCA_KIND]) : "unknown");
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tcinfo->used_len++;
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return 0;
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}
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static int dump_filter_nlmsg(void *cookie, void *msg, struct nlattr **tb)
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{
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const char *kind = cookie;
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return do_filter_dump((struct tcmsg *)msg, tb, kind);
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}
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static int show_dev_tc_bpf(int sock, unsigned int nl_pid, int ifindex)
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{
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struct bpf_tcinfo_t tcinfo;
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int i, handle, ret;
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tcinfo.handle_array = NULL;
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tcinfo.used_len = 0;
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tcinfo.array_len = 0;
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tcinfo.is_qdisc = false;
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ret = nl_get_class(sock, nl_pid, ifindex, dump_class_qdisc_nlmsg,
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&tcinfo);
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if (ret)
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return ret;
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tcinfo.is_qdisc = true;
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ret = nl_get_qdisc(sock, nl_pid, ifindex, dump_class_qdisc_nlmsg,
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&tcinfo);
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if (ret)
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return ret;
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for (i = 0; i < tcinfo.used_len; i++) {
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ret = nl_get_filter(sock, nl_pid, ifindex,
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tcinfo.handle_array[i].handle,
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dump_filter_nlmsg,
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tcinfo.handle_array[i].kind);
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if (ret)
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return ret;
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}
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/* root, ingress and egress handle */
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handle = TC_H_ROOT;
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ret = nl_get_filter(sock, nl_pid, ifindex, handle, dump_filter_nlmsg,
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"root");
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if (ret)
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return ret;
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handle = TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_INGRESS);
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ret = nl_get_filter(sock, nl_pid, ifindex, handle, dump_filter_nlmsg,
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"qdisc_clsact_ingress");
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if (ret)
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return ret;
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handle = TC_H_MAKE(TC_H_CLSACT, TC_H_MIN_EGRESS);
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ret = nl_get_filter(sock, nl_pid, ifindex, handle, dump_filter_nlmsg,
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"qdisc_clsact_egress");
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if (ret)
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return ret;
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return 0;
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}
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static int do_show(int argc, char **argv)
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{
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int i, sock, ret, filter_idx = -1;
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struct bpf_netdev_t dev_array;
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unsigned int nl_pid;
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char err_buf[256];
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if (argc == 2) {
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if (strcmp(argv[0], "dev") != 0)
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usage();
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filter_idx = if_nametoindex(argv[1]);
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if (filter_idx == 0) {
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fprintf(stderr, "invalid dev name %s\n", argv[1]);
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return -1;
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}
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} else if (argc != 0) {
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usage();
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}
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sock = bpf_netlink_open(&nl_pid);
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if (sock < 0) {
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fprintf(stderr, "failed to open netlink sock\n");
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return -1;
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}
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dev_array.ifindex_array = NULL;
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dev_array.used_len = 0;
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dev_array.array_len = 0;
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dev_array.filter_idx = filter_idx;
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if (json_output)
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jsonw_start_array(json_wtr);
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NET_START_OBJECT;
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NET_START_ARRAY("xdp", "\n");
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ret = nl_get_link(sock, nl_pid, dump_link_nlmsg, &dev_array);
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NET_END_ARRAY("\n");
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if (!ret) {
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NET_START_ARRAY("tc_filters", "\n");
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for (i = 0; i < dev_array.used_len; i++) {
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ret = show_dev_tc_bpf(sock, nl_pid,
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dev_array.ifindex_array[i]);
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if (ret)
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break;
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}
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NET_END_ARRAY("\n");
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}
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NET_END_OBJECT;
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if (json_output)
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jsonw_end_array(json_wtr);
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if (ret) {
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if (json_output)
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jsonw_null(json_wtr);
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libbpf_strerror(ret, err_buf, sizeof(err_buf));
|
||||
fprintf(stderr, "Error: %s\n", err_buf);
|
||||
}
|
||||
free(dev_array.ifindex_array);
|
||||
close(sock);
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int do_help(int argc, char **argv)
|
||||
{
|
||||
if (json_output) {
|
||||
jsonw_null(json_wtr);
|
||||
return 0;
|
||||
}
|
||||
|
||||
fprintf(stderr,
|
||||
"Usage: %s %s { show | list } [dev <devname>]\n"
|
||||
" %s %s help\n",
|
||||
bin_name, argv[-2], bin_name, argv[-2]);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct cmd cmds[] = {
|
||||
{ "show", do_show },
|
||||
{ "list", do_show },
|
||||
{ "help", do_help },
|
||||
{ 0 }
|
||||
};
|
||||
|
||||
int do_net(int argc, char **argv)
|
||||
{
|
||||
return cmd_select(cmds, argc, argv, do_help);
|
||||
}
|
181
tools/bpf/bpftool/netlink_dumper.c
Normal file
181
tools/bpf/bpftool/netlink_dumper.c
Normal file
|
@ -0,0 +1,181 @@
|
|||
// SPDX-License-Identifier: GPL-2.0+
|
||||
// Copyright (C) 2018 Facebook
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <libbpf.h>
|
||||
#include <linux/rtnetlink.h>
|
||||
#include <linux/tc_act/tc_bpf.h>
|
||||
|
||||
#include <nlattr.h>
|
||||
#include "main.h"
|
||||
#include "netlink_dumper.h"
|
||||
|
||||
static void xdp_dump_prog_id(struct nlattr **tb, int attr,
|
||||
const char *type)
|
||||
{
|
||||
if (!tb[attr])
|
||||
return;
|
||||
|
||||
NET_DUMP_UINT(type, nla_getattr_u32(tb[attr]))
|
||||
}
|
||||
|
||||
static int do_xdp_dump_one(struct nlattr *attr, unsigned int ifindex,
|
||||
const char *name)
|
||||
{
|
||||
struct nlattr *tb[IFLA_XDP_MAX + 1];
|
||||
unsigned char mode;
|
||||
|
||||
if (nla_parse_nested(tb, IFLA_XDP_MAX, attr, NULL) < 0)
|
||||
return -1;
|
||||
|
||||
if (!tb[IFLA_XDP_ATTACHED])
|
||||
return 0;
|
||||
|
||||
mode = nla_getattr_u8(tb[IFLA_XDP_ATTACHED]);
|
||||
if (mode == XDP_ATTACHED_NONE)
|
||||
return 0;
|
||||
|
||||
NET_START_OBJECT;
|
||||
NET_DUMP_UINT("ifindex", ifindex);
|
||||
|
||||
if (name)
|
||||
NET_DUMP_STR("devname", name);
|
||||
|
||||
if (tb[IFLA_XDP_PROG_ID])
|
||||
NET_DUMP_UINT("prog_id", nla_getattr_u32(tb[IFLA_XDP_PROG_ID]));
|
||||
|
||||
if (mode == XDP_ATTACHED_MULTI) {
|
||||
xdp_dump_prog_id(tb, IFLA_XDP_SKB_PROG_ID, "generic_prog_id");
|
||||
xdp_dump_prog_id(tb, IFLA_XDP_DRV_PROG_ID, "drv_prog_id");
|
||||
xdp_dump_prog_id(tb, IFLA_XDP_HW_PROG_ID, "offload_prog_id");
|
||||
}
|
||||
|
||||
NET_END_OBJECT_FINAL;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int do_xdp_dump(struct ifinfomsg *ifinfo, struct nlattr **tb)
|
||||
{
|
||||
if (!tb[IFLA_XDP])
|
||||
return 0;
|
||||
|
||||
return do_xdp_dump_one(tb[IFLA_XDP], ifinfo->ifi_index,
|
||||
nla_getattr_str(tb[IFLA_IFNAME]));
|
||||
}
|
||||
|
||||
static char *hexstring_n2a(const unsigned char *str, int len,
|
||||
char *buf, int blen)
|
||||
{
|
||||
char *ptr = buf;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < len; i++) {
|
||||
if (blen < 3)
|
||||
break;
|
||||
sprintf(ptr, "%02x", str[i]);
|
||||
ptr += 2;
|
||||
blen -= 2;
|
||||
}
|
||||
return buf;
|
||||
}
|
||||
|
||||
static int do_bpf_dump_one_act(struct nlattr *attr)
|
||||
{
|
||||
struct nlattr *tb[TCA_ACT_BPF_MAX + 1];
|
||||
char buf[256];
|
||||
|
||||
if (nla_parse_nested(tb, TCA_ACT_BPF_MAX, attr, NULL) < 0)
|
||||
return -LIBBPF_ERRNO__NLPARSE;
|
||||
|
||||
if (!tb[TCA_ACT_BPF_PARMS])
|
||||
return -LIBBPF_ERRNO__NLPARSE;
|
||||
|
||||
NET_START_OBJECT_NESTED2;
|
||||
if (tb[TCA_ACT_BPF_NAME])
|
||||
NET_DUMP_STR("name", nla_getattr_str(tb[TCA_ACT_BPF_NAME]));
|
||||
if (tb[TCA_ACT_BPF_ID])
|
||||
NET_DUMP_UINT("bpf_id", nla_getattr_u32(tb[TCA_ACT_BPF_ID]));
|
||||
if (tb[TCA_ACT_BPF_TAG])
|
||||
NET_DUMP_STR("tag", hexstring_n2a(nla_data(tb[TCA_ACT_BPF_TAG]),
|
||||
nla_len(tb[TCA_ACT_BPF_TAG]),
|
||||
buf, sizeof(buf)));
|
||||
NET_END_OBJECT_NESTED;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int do_dump_one_act(struct nlattr *attr)
|
||||
{
|
||||
struct nlattr *tb[TCA_ACT_MAX + 1];
|
||||
|
||||
if (!attr)
|
||||
return 0;
|
||||
|
||||
if (nla_parse_nested(tb, TCA_ACT_MAX, attr, NULL) < 0)
|
||||
return -LIBBPF_ERRNO__NLPARSE;
|
||||
|
||||
if (tb[TCA_ACT_KIND] && strcmp(nla_data(tb[TCA_ACT_KIND]), "bpf") == 0)
|
||||
return do_bpf_dump_one_act(tb[TCA_ACT_OPTIONS]);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int do_bpf_act_dump(struct nlattr *attr)
|
||||
{
|
||||
struct nlattr *tb[TCA_ACT_MAX_PRIO + 1];
|
||||
int act, ret;
|
||||
|
||||
if (nla_parse_nested(tb, TCA_ACT_MAX_PRIO, attr, NULL) < 0)
|
||||
return -LIBBPF_ERRNO__NLPARSE;
|
||||
|
||||
NET_START_ARRAY("act", "");
|
||||
for (act = 0; act <= TCA_ACT_MAX_PRIO; act++) {
|
||||
ret = do_dump_one_act(tb[act]);
|
||||
if (ret)
|
||||
break;
|
||||
}
|
||||
NET_END_ARRAY(" ");
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int do_bpf_filter_dump(struct nlattr *attr)
|
||||
{
|
||||
struct nlattr *tb[TCA_BPF_MAX + 1];
|
||||
char buf[256];
|
||||
int ret;
|
||||
|
||||
if (nla_parse_nested(tb, TCA_BPF_MAX, attr, NULL) < 0)
|
||||
return -LIBBPF_ERRNO__NLPARSE;
|
||||
|
||||
if (tb[TCA_BPF_NAME])
|
||||
NET_DUMP_STR("name", nla_getattr_str(tb[TCA_BPF_NAME]));
|
||||
if (tb[TCA_BPF_ID])
|
||||
NET_DUMP_UINT("prog_id", nla_getattr_u32(tb[TCA_BPF_ID]));
|
||||
if (tb[TCA_BPF_TAG])
|
||||
NET_DUMP_STR("tag", hexstring_n2a(nla_data(tb[TCA_BPF_TAG]),
|
||||
nla_len(tb[TCA_BPF_TAG]),
|
||||
buf, sizeof(buf)));
|
||||
if (tb[TCA_BPF_ACT]) {
|
||||
ret = do_bpf_act_dump(tb[TCA_BPF_ACT]);
|
||||
if (ret)
|
||||
return ret;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int do_filter_dump(struct tcmsg *info, struct nlattr **tb, const char *kind)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
if (tb[TCA_OPTIONS] && strcmp(nla_data(tb[TCA_KIND]), "bpf") == 0) {
|
||||
NET_START_OBJECT;
|
||||
NET_DUMP_UINT("ifindex", info->tcm_ifindex);
|
||||
NET_DUMP_STR("kind", kind);
|
||||
ret = do_bpf_filter_dump(tb[TCA_OPTIONS]);
|
||||
NET_END_OBJECT_FINAL;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
103
tools/bpf/bpftool/netlink_dumper.h
Normal file
103
tools/bpf/bpftool/netlink_dumper.h
Normal file
|
@ -0,0 +1,103 @@
|
|||
// SPDX-License-Identifier: GPL-2.0+
|
||||
// Copyright (C) 2018 Facebook
|
||||
|
||||
#ifndef _NETLINK_DUMPER_H_
|
||||
#define _NETLINK_DUMPER_H_
|
||||
|
||||
#define NET_START_OBJECT \
|
||||
{ \
|
||||
if (json_output) \
|
||||
jsonw_start_object(json_wtr); \
|
||||
}
|
||||
|
||||
#define NET_START_OBJECT_NESTED(name) \
|
||||
{ \
|
||||
if (json_output) { \
|
||||
jsonw_name(json_wtr, name); \
|
||||
jsonw_start_object(json_wtr); \
|
||||
} else { \
|
||||
fprintf(stderr, "%s {", name); \
|
||||
} \
|
||||
}
|
||||
|
||||
#define NET_START_OBJECT_NESTED2 \
|
||||
{ \
|
||||
if (json_output) \
|
||||
jsonw_start_object(json_wtr); \
|
||||
else \
|
||||
fprintf(stderr, "{"); \
|
||||
}
|
||||
|
||||
#define NET_END_OBJECT_NESTED \
|
||||
{ \
|
||||
if (json_output) \
|
||||
jsonw_end_object(json_wtr); \
|
||||
else \
|
||||
fprintf(stderr, "}"); \
|
||||
}
|
||||
|
||||
#define NET_END_OBJECT \
|
||||
{ \
|
||||
if (json_output) \
|
||||
jsonw_end_object(json_wtr); \
|
||||
}
|
||||
|
||||
#define NET_END_OBJECT_FINAL \
|
||||
{ \
|
||||
if (json_output) \
|
||||
jsonw_end_object(json_wtr); \
|
||||
else \
|
||||
fprintf(stderr, "\n"); \
|
||||
}
|
||||
|
||||
#define NET_START_ARRAY(name, newline) \
|
||||
{ \
|
||||
if (json_output) { \
|
||||
jsonw_name(json_wtr, name); \
|
||||
jsonw_start_array(json_wtr); \
|
||||
} else { \
|
||||
fprintf(stderr, "%s [%s", name, newline);\
|
||||
} \
|
||||
}
|
||||
|
||||
#define NET_END_ARRAY(endstr) \
|
||||
{ \
|
||||
if (json_output) \
|
||||
jsonw_end_array(json_wtr); \
|
||||
else \
|
||||
fprintf(stderr, "]%s", endstr); \
|
||||
}
|
||||
|
||||
#define NET_DUMP_UINT(name, val) \
|
||||
{ \
|
||||
if (json_output) \
|
||||
jsonw_uint_field(json_wtr, name, val); \
|
||||
else \
|
||||
fprintf(stderr, "%s %d ", name, val); \
|
||||
}
|
||||
|
||||
#define NET_DUMP_LLUINT(name, val) \
|
||||
{ \
|
||||
if (json_output) \
|
||||
jsonw_lluint_field(json_wtr, name, val);\
|
||||
else \
|
||||
fprintf(stderr, "%s %lld ", name, val); \
|
||||
}
|
||||
|
||||
#define NET_DUMP_STR(name, str) \
|
||||
{ \
|
||||
if (json_output) \
|
||||
jsonw_string_field(json_wtr, name, str);\
|
||||
else \
|
||||
fprintf(stderr, "%s %s ", name, str); \
|
||||
}
|
||||
|
||||
#define NET_DUMP_STR_ONLY(str) \
|
||||
{ \
|
||||
if (json_output) \
|
||||
jsonw_string(json_wtr, str); \
|
||||
else \
|
||||
fprintf(stderr, "%s ", str); \
|
||||
}
|
||||
|
||||
#endif
|
Loading…
Reference in a new issue