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Message-Id: <20171106060632.3380-4-bhole_prashant_q7@lab.ntt.co.jp>
Date: Mon, 6 Nov 2017 15:06:32 +0900
From: Prashant Bhole <bhole_prashant_q7@....ntt.co.jp>
To: "David S . Miller" <davem@...emloft.net>
Cc: Prashant Bhole <bhole_prashant_q7@....ntt.co.jp>,
netdev@...r.kernel.org, Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Quentin Monnet <quentin.monnet@...ronome.com>,
Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: [PATCH net-next V3 3/3] tools: bpftool: optionally show filenames of pinned objects
Making it optional to show file names of pinned objects because
it scans complete bpf-fs filesystem which is costly.
Added option -f|--bpffs. Documentation updated.
Signed-off-by: Prashant Bhole <bhole_prashant_q7@....ntt.co.jp>
---
v2:
- Change command line option from {-l|--pinned} to {-f|--bpffs}
- Updated documentation
v3:
- No change
tools/bpf/bpftool/Documentation/bpftool-map.rst | 5 ++++-
tools/bpf/bpftool/Documentation/bpftool-prog.rst | 5 ++++-
tools/bpf/bpftool/main.c | 14 +++++++++++---
tools/bpf/bpftool/main.h | 3 ++-
tools/bpf/bpftool/map.c | 3 ++-
tools/bpf/bpftool/prog.c | 3 ++-
6 files changed, 25 insertions(+), 8 deletions(-)
diff --git a/tools/bpf/bpftool/Documentation/bpftool-map.rst b/tools/bpf/bpftool/Documentation/bpftool-map.rst
index abb9ee940b15..9f51a268eb06 100644
--- a/tools/bpf/bpftool/Documentation/bpftool-map.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-map.rst
@@ -12,7 +12,7 @@ SYNOPSIS
**bpftool** [*OPTIONS*] **map** *COMMAND*
- *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] }
+ *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-f** | **--bpffs** } }
*COMMANDS* :=
{ **show** | **dump** | **update** | **lookup** | **getnext** | **delete**
@@ -86,6 +86,9 @@ OPTIONS
-p, --pretty
Generate human-readable JSON output. Implies **-j**.
+ -f, --bpffs
+ Show file names of pinned maps.
+
EXAMPLES
========
**# bpftool map show**
diff --git a/tools/bpf/bpftool/Documentation/bpftool-prog.rst b/tools/bpf/bpftool/Documentation/bpftool-prog.rst
index 0f25d3c39e05..36e8d1c3c40d 100644
--- a/tools/bpf/bpftool/Documentation/bpftool-prog.rst
+++ b/tools/bpf/bpftool/Documentation/bpftool-prog.rst
@@ -12,7 +12,7 @@ SYNOPSIS
**bpftool** [*OPTIONS*] **prog** *COMMAND*
- *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] }
+ *OPTIONS* := { { **-j** | **--json** } [{ **-p** | **--pretty** }] | { **-f** | **--bpffs** } }
*COMMANDS* :=
{ **show** | **dump xlated** | **dump jited** | **pin** | **help** }
@@ -75,6 +75,9 @@ OPTIONS
-p, --pretty
Generate human-readable JSON output. Implies **-j**.
+ -f, --bpffs
+ Show file names of pinned programs.
+
EXAMPLES
========
**# bpftool prog show**
diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c
index 6ad53f1797fa..d6e4762170a4 100644
--- a/tools/bpf/bpftool/main.c
+++ b/tools/bpf/bpftool/main.c
@@ -54,6 +54,7 @@ static int (*last_do_help)(int argc, char **argv);
json_writer_t *json_wtr;
bool pretty_output;
bool json_output;
+bool show_pinned;
struct pinned_obj_table prog_table;
struct pinned_obj_table map_table;
@@ -265,6 +266,7 @@ int main(int argc, char **argv)
{ "help", no_argument, NULL, 'h' },
{ "pretty", no_argument, NULL, 'p' },
{ "version", no_argument, NULL, 'V' },
+ { "bpffs", no_argument, NULL, 'f' },
{ 0 }
};
int opt, ret;
@@ -272,12 +274,13 @@ int main(int argc, char **argv)
last_do_help = do_help;
pretty_output = false;
json_output = false;
+ show_pinned = false;
bin_name = argv[0];
hash_init(prog_table.table);
hash_init(map_table.table);
- while ((opt = getopt_long(argc, argv, "Vhpj",
+ while ((opt = getopt_long(argc, argv, "Vhpjf",
options, NULL)) >= 0) {
switch (opt) {
case 'V':
@@ -290,6 +293,9 @@ int main(int argc, char **argv)
case 'j':
json_output = true;
break;
+ case 'f':
+ show_pinned = true;
+ break;
default:
usage();
}
@@ -316,8 +322,10 @@ int main(int argc, char **argv)
if (json_output)
jsonw_destroy(&json_wtr);
- delete_pinned_obj_table(&prog_table);
- delete_pinned_obj_table(&map_table);
+ if (show_pinned) {
+ delete_pinned_obj_table(&prog_table);
+ delete_pinned_obj_table(&map_table);
+ }
return ret;
}
diff --git a/tools/bpf/bpftool/main.h b/tools/bpf/bpftool/main.h
index 726f6e27a706..32846a0e42fb 100644
--- a/tools/bpf/bpftool/main.h
+++ b/tools/bpf/bpftool/main.h
@@ -59,7 +59,7 @@
#define HELP_SPEC_PROGRAM \
"PROG := { id PROG_ID | pinned FILE | tag PROG_TAG }"
#define HELP_SPEC_OPTIONS \
- "OPTIONS := { {-j|--json} [{-p|--pretty}] }"
+ "OPTIONS := { {-j|--json} [{-p|--pretty}] | {-f|--bpffs} }"
enum bpf_obj_type {
BPF_OBJ_UNKNOWN,
@@ -71,6 +71,7 @@ extern const char *bin_name;
extern json_writer_t *json_wtr;
extern bool json_output;
+extern bool show_pinned;
extern struct pinned_obj_table prog_table;
extern struct pinned_obj_table map_table;
diff --git a/tools/bpf/bpftool/map.c b/tools/bpf/bpftool/map.c
index de0980657cef..e2450c8e88e6 100644
--- a/tools/bpf/bpftool/map.c
+++ b/tools/bpf/bpftool/map.c
@@ -497,7 +497,8 @@ static int do_show(int argc, char **argv)
int err;
int fd;
- build_pinned_obj_table(&map_table, BPF_OBJ_MAP);
+ if (show_pinned)
+ build_pinned_obj_table(&map_table, BPF_OBJ_MAP);
if (argc == 2) {
fd = map_parse_fd_and_info(&argc, &argv, &info, &len);
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index 11375f669fc0..ad619b96c276 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -351,7 +351,8 @@ static int do_show(int argc, char **argv)
int err;
int fd;
- build_pinned_obj_table(&prog_table, BPF_OBJ_PROG);
+ if (show_pinned)
+ build_pinned_obj_table(&prog_table, BPF_OBJ_PROG);
if (argc == 2) {
fd = prog_parse_fd(&argc, &argv);
--
2.13.6
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