From c541b73466549c4aa4ee20ccd04ba52e4c95d6eb Mon Sep 17 00:00:00 2001 From: Prashant Bhole Date: Wed, 8 Nov 2017 13:55:49 +0900 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- 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 13453de2e570..9c191e222d6f 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 8f94b8ac2e63..f45c44ef9bec 100644 --- a/tools/bpf/bpftool/prog.c +++ b/tools/bpf/bpftool/prog.c @@ -382,7 +382,8 @@ 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);