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Message-Id: <20181109162146.78019-7-sdf@google.com>
Date: Fri, 9 Nov 2018 08:21:45 -0800
From: Stanislav Fomichev <sdf@...gle.com>
To: netdev@...r.kernel.org, linux-kselftest@...r.kernel.org,
ast@...nel.org, daniel@...earbox.net, shuah@...nel.org,
jakub.kicinski@...ronome.com, quentin.monnet@...ronome.com
Cc: guro@...com, jiong.wang@...ronome.com, sdf@...gle.com,
bhole_prashant_q7@....ntt.co.jp, john.fastabend@...il.com,
jbenc@...hat.com, treeze.taeung@...il.com, yhs@...com, osk@...com,
sandipan@...ux.vnet.ibm.com
Subject: [PATCH v5 bpf-next 6/7] bpftool: add pinmaps argument to the load/loadall
This new additional argument lets users pin all maps from the object at
specified path.
Signed-off-by: Stanislav Fomichev <sdf@...gle.com>
Acked-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
---
.../bpftool/Documentation/bpftool-prog.rst | 4 +++-
tools/bpf/bpftool/bash-completion/bpftool | 3 ++-
tools/bpf/bpftool/prog.c | 24 ++++++++++++++++++-
3 files changed, 28 insertions(+), 3 deletions(-)
diff --git a/tools/bpf/bpftool/Documentation/bpftool-prog.rst b/tools/bpf/bpftool/Documentation/bpftool-prog.rst
index 984d125c507a..15e9172f7e55 100644
--- a/tools/bpf/bpftool/Documentation/bpftool-prog.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-prog.rst
@@ -80,7 +80,7 @@ DESCRIPTION
contain a dot character ('.'), which is reserved for future
extensions of *bpffs*.
- **bpftool prog { load | loadall }** *OBJ* *PATH* [**type** *TYPE*] [**map** {**idx** *IDX* | **name** *NAME*} *MAP*] [**dev** *NAME*]
+ **bpftool prog { load | loadall }** *OBJ* *PATH* [**type** *TYPE*] [**map** {**idx** *IDX* | **name** *NAME*} *MAP*] [**dev** *NAME*] [**pinmaps** *MAP_DIR*]
Load bpf program(s) from binary *OBJ* and pin as *PATH*.
**bpftool prog load** pins only the first program from the
*OBJ* as *PATH*. **bpftool prog loadall** pins all programs
@@ -96,6 +96,8 @@ DESCRIPTION
use, referring to it by **id** or through a **pinned** file.
If **dev** *NAME* is specified program will be loaded onto
given networking device (offload).
+ Optional **pinmaps** argument can be provided to pin all
+ maps under *MAP_DIR* directory.
Note: *PATH* must be located in *bpffs* mount. It must not
contain a dot character ('.'), which is reserved for future
diff --git a/tools/bpf/bpftool/bash-completion/bpftool b/tools/bpf/bpftool/bash-completion/bpftool
index 780ebafb756a..a05d0071f39f 100644
--- a/tools/bpf/bpftool/bash-completion/bpftool
+++ b/tools/bpf/bpftool/bash-completion/bpftool
@@ -346,7 +346,7 @@ _bpftool()
_bpftool_get_map_ids
return 0
;;
- pinned)
+ pinned|pinmaps)
_filedir
return 0
;;
@@ -358,6 +358,7 @@ _bpftool()
COMPREPLY=( $( compgen -W "map" -- "$cur" ) )
_bpftool_once_attr 'type'
_bpftool_once_attr 'dev'
+ _bpftool_once_attr 'pinmaps'
return 0
;;
esac
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index 3abfee5533e6..4bd6ad19fc05 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -802,6 +802,7 @@ static int load_with_options(int argc, char **argv, bool first_prog_only)
struct map_replace *map_replace = NULL;
struct bpf_program *prog = NULL, *pos;
unsigned int old_map_fds = 0;
+ const char *pinmaps = NULL;
struct bpf_object *obj;
struct bpf_map *map;
const char *pinfile;
@@ -906,6 +907,13 @@ static int load_with_options(int argc, char **argv, bool first_prog_only)
goto err_free_reuse_maps;
}
NEXT_ARG();
+ } else if (is_prefix(*argv, "pinmaps")) {
+ NEXT_ARG();
+
+ if (!REQ_ARGS(1))
+ goto err_free_reuse_maps;
+
+ pinmaps = GET_ARG();
} else {
p_err("expected no more arguments, 'type', 'map' or 'dev', got: '%s'?",
*argv);
@@ -1026,6 +1034,14 @@ static int load_with_options(int argc, char **argv, bool first_prog_only)
}
}
+ if (pinmaps) {
+ err = bpf_object__pin_maps(obj, pinmaps);
+ if (err) {
+ p_err("failed to pin all maps");
+ goto err_unpin;
+ }
+ }
+
if (json_output)
jsonw_null(json_wtr);
@@ -1036,6 +1052,11 @@ static int load_with_options(int argc, char **argv, bool first_prog_only)
return 0;
+err_unpin:
+ if (first_prog_only)
+ unlink(pinfile);
+ else
+ bpf_object__unpin_programs(obj, pinfile);
err_close_obj:
bpf_object__close(obj);
err_free_reuse_maps:
@@ -1069,7 +1090,8 @@ static int do_help(int argc, char **argv)
" %s %s pin PROG FILE\n"
" %s %s { load | loadall } OBJ PATH \\\n"
" [type TYPE] [dev NAME] \\\n"
- " [map { idx IDX | name NAME } MAP]\n"
+ " [map { idx IDX | name NAME } MAP]\\\n"
+ " [pinmaps MAP_DIR]\n"
" %s %s attach PROG ATTACH_TYPE MAP\n"
" %s %s detach PROG ATTACH_TYPE MAP\n"
" %s %s help\n"
--
2.19.1.930.g4563a0d9d0-goog
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