tools/bpftool: Add documentation and bash-completion for `link detach`
Add info on link detach sub-command to man page. Add detach to bash-completion as well. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Song Liu <songliubraving@fb.com> Acked-by: John Fastabend <john.fastabend@gmail.com. Link: https://lore.kernel.org/bpf/20200731182830.286260-6-andriin@fb.com
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@ -21,6 +21,7 @@ LINK COMMANDS
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| **bpftool** **link { show | list }** [*LINK*]
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| **bpftool** **link pin** *LINK* *FILE*
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| **bpftool** **link detach *LINK*
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| **bpftool** **link help**
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| *LINK* := { **id** *LINK_ID* | **pinned** *FILE* }
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@ -49,6 +50,13 @@ DESCRIPTION
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contain a dot character ('.'), which is reserved for future
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extensions of *bpffs*.
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**bpftool link detach** *LINK*
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Force-detach link *LINK*. BPF link and its underlying BPF
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program will stay valid, but they will be detached from the
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respective BPF hook and BPF link will transition into
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a defunct state until last open file descriptor for that
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link is closed.
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**bpftool link help**
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Print short help message.
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@ -1122,7 +1122,7 @@ _bpftool()
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;;
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link)
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case $command in
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show|list|pin)
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show|list|pin|detach)
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case $prev in
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id)
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_bpftool_get_link_ids
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@ -1139,7 +1139,7 @@ _bpftool()
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COMPREPLY=( $( compgen -W "$LINK_TYPE" -- "$cur" ) )
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return 0
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;;
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pin)
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pin|detach)
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if [[ $prev == "$command" ]]; then
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COMPREPLY=( $( compgen -W "$LINK_TYPE" -- "$cur" ) )
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else
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