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| author | Daniel Borkmann <daniel@iogearbox.net> | 2023-08-16 11:56:51 +0200 |
|---|---|---|
| committer | Martin KaFai Lau <martin.lau@kernel.org> | 2023-08-16 10:14:17 -0700 |
| commit | 053bbf9bff58864be880d7e9a5af586793dbb7de (patch) | |
| tree | 0c687e9ba2d3c6b02448639a49b805b274a320d1 /tools/bpf | |
| parent | e16e6c6df475b10b1ed933a6827798312612358f (diff) | |
| download | linux-053bbf9bff58864be880d7e9a5af586793dbb7de.tar.gz linux-053bbf9bff58864be880d7e9a5af586793dbb7de.tar.bz2 linux-053bbf9bff58864be880d7e9a5af586793dbb7de.zip | |
bpftool: Implement link show support for xdp
Add support to dump XDP link information to bpftool. This reuses the
recently added show_link_ifindex_{plain,json}(). The XDP link info only
exposes the ifindex.
Below shows an example link dump output, and a cgroup link is included
for comparison, too:
# bpftool link
[...]
10: cgroup prog 2466
cgroup_id 1 attach_type cgroup_inet6_post_bind
[...]
16: xdp prog 2477
ifindex enp5s0(3)
[...]
Equivalent json output:
# bpftool link --json
[...]
{
"id": 10,
"type": "cgroup",
"prog_id": 2466,
"cgroup_id": 1,
"attach_type": "cgroup_inet6_post_bind"
},
[...]
{
"id": 16,
"type": "xdp",
"prog_id": 2477,
"devname": "enp5s0",
"ifindex": 3
}
[...]
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Quentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/r/20230816095651.10014-2-daniel@iogearbox.net
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Diffstat (limited to 'tools/bpf')
| -rw-r--r-- | tools/bpf/bpftool/link.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/bpf/bpftool/link.c b/tools/bpf/bpftool/link.c index a3774594f154..0b214f6ab5c8 100644 --- a/tools/bpf/bpftool/link.c +++ b/tools/bpf/bpftool/link.c @@ -449,6 +449,9 @@ static int show_link_close_json(int fd, struct bpf_link_info *info) show_link_ifindex_json(info->tcx.ifindex, json_wtr); show_link_attach_type_json(info->tcx.attach_type, json_wtr); break; + case BPF_LINK_TYPE_XDP: + show_link_ifindex_json(info->xdp.ifindex, json_wtr); + break; case BPF_LINK_TYPE_STRUCT_OPS: jsonw_uint_field(json_wtr, "map_id", info->struct_ops.map_id); @@ -782,6 +785,10 @@ static int show_link_close_plain(int fd, struct bpf_link_info *info) show_link_ifindex_plain(info->tcx.ifindex); show_link_attach_type_plain(info->tcx.attach_type); break; + case BPF_LINK_TYPE_XDP: + printf("\n\t"); + show_link_ifindex_plain(info->xdp.ifindex); + break; case BPF_LINK_TYPE_KPROBE_MULTI: show_kprobe_multi_plain(info); break; |