tools: bpftool: add JSON output for bpftool map * commands

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Reuse the json_writer API introduced in an earlier commit to make
bpftool able to generate JSON output on
`bpftool map { show | dump | lookup | getnext }` commands. Remaining
commands produce no output.

Some functions have been spit into plain-output and JSON versions in
order to remain readable.

Outputs for sample maps have been successfully tested against a JSON
validator.

Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Quentin Monnet 2017-10-23 09:24:11 -07:00 • committed by David S. Miller

parent f05e2c32f7

commit 831a0aafe5

1 changed files with 129 additions and 20 deletions

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tools/bpf/bpftool/map.c

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