Commit 45cea721 authored by Kui-Feng Lee's avatar Kui-Feng Lee Committed by Alexei Starovoitov

bpftool: Update doc to explain struct_ops register subcommand.

The "struct_ops register" subcommand now allows for an optional *LINK_DIR*
to be included. This specifies the directory path where bpftool will pin
struct_ops links with the same name as their corresponding map names.
Signed-off-by: default avatarKui-Feng Lee <kuifeng@meta.com>
Reviewed-by: default avatarQuentin Monnet <quentin@isovalent.com>
Link: https://lore.kernel.org/r/20230420002822.345222-2-kuifeng@meta.comSigned-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent 0232b788
......@@ -26,7 +26,7 @@ STRUCT_OPS COMMANDS
| **bpftool** **struct_ops { show | list }** [*STRUCT_OPS_MAP*]
| **bpftool** **struct_ops dump** [*STRUCT_OPS_MAP*]
| **bpftool** **struct_ops register** *OBJ*
| **bpftool** **struct_ops register** *OBJ* [*LINK_DIR*]
| **bpftool** **struct_ops unregister** *STRUCT_OPS_MAP*
| **bpftool** **struct_ops help**
|
......@@ -51,10 +51,14 @@ DESCRIPTION
for the given struct_ops. Otherwise, it dumps all struct_ops
currently existing in the system.
**bpftool struct_ops register** *OBJ*
**bpftool struct_ops register** *OBJ* [*LINK_DIR*]
Register bpf struct_ops from *OBJ*. All struct_ops under
the ELF section ".struct_ops" will be registered to
its kernel subsystem.
the ELF section ".struct_ops" and ".struct_ops.link" will
be registered to its kernel subsystem. For each
struct_ops in the ".struct_ops.link" section, a link
will be created. You can give *LINK_DIR* to provide a
directory path where these links will be pinned with the
same name as their corresponding map name.
**bpftool struct_ops unregister** *STRUCT_OPS_MAP*
Unregister the *STRUCT_OPS_MAP* from the kernel subsystem.
......
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