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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
This commit is contained in:
Andrii Nakryiko 2020-07-31 11:28:30 -07:00 committed by Alexei Starovoitov
parent 0e8c7c07f0
commit e85f99aa77
2 changed files with 10 additions and 2 deletions
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8
tools/bpf/bpftool/Documentation/bpftool-link.rst
View File

@ -21,6 +21,7 @@ LINK COMMANDS
| **bpftool** **link { show | list }** [*LINK*]
| **bpftool** **link pin** *LINK* *FILE*
| **bpftool** **link detach *LINK*
| **bpftool** **link help**
|
| *LINK* := { **id** *LINK_ID* | **pinned** *FILE* }
@ -49,6 +50,13 @@ DESCRIPTION
contain a dot character ('.'), which is reserved for future
extensions of *bpffs*.
**bpftool link detach** *LINK*
Force-detach link *LINK*. BPF link and its underlying BPF
program will stay valid, but they will be detached from the
respective BPF hook and BPF link will transition into
a defunct state until last open file descriptor for that
link is closed.
**bpftool link help**
Print short help message.

4
tools/bpf/bpftool/bash-completion/bpftool
View File

@ -1122,7 +1122,7 @@ _bpftool()
;;
link)
case $command in
show|list|pin)
show|list|pin|detach)
case $prev in
id)
_bpftool_get_link_ids
@ -1139,7 +1139,7 @@ _bpftool()
COMPREPLY=( $( compgen -W "$LINK_TYPE" -- "$cur" ) )
return 0
;;
pin)
pin|detach)
if [[ $prev == "$command" ]]; then
COMPREPLY=( $( compgen -W "$LINK_TYPE" -- "$cur" ) )
else