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linux-next/tools/bpf/bpftool
Quentin Monnet f99e166397 tools: bpftool: add probes for eBPF map types
Add new probes for eBPF map types, to detect what are the ones available
on the system. Try creating one map of each type, and see if the kernel
complains.

Sample output:

    # bpftool feature probe kernel
    ...
    Scanning eBPF map types...
    eBPF map_type hash is available
    eBPF map_type array is available
    eBPF map_type prog_array is available
    ...

    # bpftool --json --pretty feature probe kernel
    {
        ...
        "map_types": {
            "have_hash_map_type": true,
            "have_array_map_type": true,
            "have_prog_array_map_type": true,
            ...
        }
    }

v5:
- In libbpf.map, move global symbol to the new LIBBPF_0.0.2 section.

v3:
- Use a switch with all enum values for setting specific map parameters,
  so that gcc complains at compile time (-Wswitch-enum) if new map types
  were added to the kernel but libbpf was not updated.

v2:
- Move probes from bpftool to libbpf.
- Remove C-style macros output from this patch.

Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2019-01-22 22:15:40 -08:00
..
bash-completion bpftool: add bash completion for peek/push/enqueue/pop/dequeue 2019-01-17 10:30:32 +01:00
Documentation tools: bpftool: add basic probe capability, probe syscall availability 2019-01-22 22:15:40 -08:00
.gitignore tools/bpftool: ignore build products 2018-07-26 02:50:26 +02:00
btf_dumper.c tools/bpf: support __int128 in bpftool map pretty dumper 2019-01-16 22:53:44 +01:00
cfg.c tools: bpftool: replace Netronome boilerplate with SPDX license headers 2018-12-13 12:08:44 +01:00
cfg.h tools: bpftool: replace Netronome boilerplate with SPDX license headers 2018-12-13 12:08:44 +01:00
cgroup.c tools: bpftool: dual license all files 2018-12-13 12:08:44 +01:00
common.c tools: bpftool: add an option to prevent auto-mount of bpffs, tracefs 2018-12-18 14:47:17 +01:00
feature.c tools: bpftool: add probes for eBPF map types 2019-01-22 22:15:40 -08:00
jit_disasm.c tools: bpftool: dual license all files 2018-12-13 12:08:44 +01:00
json_writer.c tools: bpftool: fix -Wmissing declaration warnings 2018-12-15 01:31:49 +01:00
json_writer.h tools: bpftool: dual license all files 2018-12-13 12:08:44 +01:00
main.c tools: bpftool: add basic probe capability, probe syscall availability 2019-01-22 22:15:40 -08:00
main.h tools: bpftool: add probes for eBPF map types 2019-01-22 22:15:40 -08:00
Makefile tools: bpftool: do not force gcc as CC 2018-12-19 21:57:25 +01:00
map_perf_ring.c tools: bpftool: dual license all files 2018-12-13 12:08:44 +01:00
map.c tools: bpftool: add probes for eBPF map types 2019-01-22 22:15:40 -08:00
net.c tools: bpftool: dual license all files 2018-12-13 12:08:44 +01:00
netlink_dumper.c tools: bpftool: dual license all files 2018-12-13 12:08:44 +01:00
netlink_dumper.h tools: bpftool: dual license all files 2018-12-13 12:08:44 +01:00
perf.c tools: bpftool: dual license all files 2018-12-13 12:08:44 +01:00
prog.c tools: bpftool: fix -Wmissing declaration warnings 2018-12-15 01:31:49 +01:00
tracelog.c tools: bpftool: add an option to prevent auto-mount of bpffs, tracefs 2018-12-18 14:47:17 +01:00
xlated_dumper.c tools: bpftool: fix -Wmissing declaration warnings 2018-12-15 01:31:49 +01:00
xlated_dumper.h tools: bpftool: replace Netronome boilerplate with SPDX license headers 2018-12-13 12:08:44 +01:00