diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/bpf/bpftool/Documentation/bpftool-prog.rst | 11 | ||||
| -rw-r--r-- | tools/bpf/bpftool/Documentation/bpftool.rst | 2 | ||||
| -rw-r--r-- | tools/bpf/bpftool/bash-completion/bpftool | 19 | ||||
| -rw-r--r-- | tools/bpf/bpftool/prog.c | 99 |
4 files changed, 128 insertions, 3 deletions
diff --git a/tools/bpf/bpftool/Documentation/bpftool-prog.rst b/tools/bpf/bpftool/Documentation/bpftool-prog.rst index 64156a16d530..12c803003ab2 100644 --- a/tools/bpf/bpftool/Documentation/bpftool-prog.rst +++ b/tools/bpf/bpftool/Documentation/bpftool-prog.rst @@ -25,6 +25,8 @@ MAP COMMANDS | **bpftool** **prog dump jited** *PROG* [{**file** *FILE* | **opcodes**}] | **bpftool** **prog pin** *PROG* *FILE* | **bpftool** **prog load** *OBJ* *FILE* [**type** *TYPE*] [**map** {**idx** *IDX* | **name** *NAME*} *MAP*] [**dev** *NAME*] +| **bpftool** **prog attach** *PROG* *ATTACH_TYPE* *MAP* +| **bpftool** **prog detach** *PROG* *ATTACH_TYPE* *MAP* | **bpftool** **prog help** | | *MAP* := { **id** *MAP_ID* | **pinned** *FILE* } @@ -37,6 +39,7 @@ MAP COMMANDS | **cgroup/bind4** | **cgroup/bind6** | **cgroup/post_bind4** | **cgroup/post_bind6** | | **cgroup/connect4** | **cgroup/connect6** | **cgroup/sendmsg4** | **cgroup/sendmsg6** | } +| *ATTACH_TYPE* := { **msg_verdict** | **skb_verdict** | **skb_parse** } DESCRIPTION @@ -90,6 +93,14 @@ DESCRIPTION Note: *FILE* must be located in *bpffs* mount. + **bpftool prog attach** *PROG* *ATTACH_TYPE* *MAP* + Attach bpf program *PROG* (with type specified by *ATTACH_TYPE*) + to the map *MAP*. + + **bpftool prog detach** *PROG* *ATTACH_TYPE* *MAP* + Detach bpf program *PROG* (with type specified by *ATTACH_TYPE*) + from the map *MAP*. + **bpftool prog help** Print short help message. diff --git a/tools/bpf/bpftool/Documentation/bpftool.rst b/tools/bpf/bpftool/Documentation/bpftool.rst index 8dda77daeda9..25c08728ca80 100644 --- a/tools/bpf/bpftool/Documentation/bpftool.rst +++ b/tools/bpf/bpftool/Documentation/bpftool.rst @@ -26,7 +26,7 @@ SYNOPSIS | **pin** | **event_pipe** | **help** } *PROG-COMMANDS* := { **show** | **list** | **dump jited** | **dump xlated** | **pin** - | **load** | **help** } + | **load** | **attach** | **detach** | **help** } *CGROUP-COMMANDS* := { **show** | **list** | **attach** | **detach** | **help** } diff --git a/tools/bpf/bpftool/bash-completion/bpftool b/tools/bpf/bpftool/bash-completion/bpftool index df1060b852c1..082651931824 100644 --- a/tools/bpf/bpftool/bash-completion/bpftool +++ b/tools/bpf/bpftool/bash-completion/bpftool @@ -292,6 +292,23 @@ _bpftool() fi return 0 ;; + attach|detach) + if [[ ${#words[@]} == 7 ]]; then + COMPREPLY=( $( compgen -W "id pinned" -- "$cur" ) ) + return 0 + fi + + if [[ ${#words[@]} == 6 ]]; then + COMPREPLY=( $( compgen -W "msg_verdict skb_verdict skb_parse" -- "$cur" ) ) + return 0 + fi + + if [[ $prev == "$command" ]]; then + COMPREPLY=( $( compgen -W "id pinned" -- "$cur" ) ) + return 0 + fi + return 0 + ;; load) local obj @@ -347,7 +364,7 @@ _bpftool() ;; *) [[ $prev == $object ]] && \ - COMPREPLY=( $( compgen -W 'dump help pin load \ + COMPREPLY=( $( compgen -W 'dump help pin attach detach load \ show list' -- "$cur" ) ) ;; esac diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c index b1cd3bc8db70..99ab42c56724 100644 --- a/tools/bpf/bpftool/prog.c +++ b/tools/bpf/bpftool/prog.c @@ -77,6 +77,26 @@ static const char * const prog_type_name[] = { [BPF_PROG_TYPE_FLOW_DISSECTOR] = "flow_dissector", }; +static const char * const attach_type_strings[] = { + [BPF_SK_SKB_STREAM_PARSER] = "stream_parser", + [BPF_SK_SKB_STREAM_VERDICT] = "stream_verdict", + [BPF_SK_MSG_VERDICT] = "msg_verdict", + [__MAX_BPF_ATTACH_TYPE] = NULL, +}; + +enum bpf_attach_type parse_attach_type(const char *str) +{ + enum bpf_attach_type type; + + for (type = 0; type < __MAX_BPF_ATTACH_TYPE; type++) { + if (attach_type_strings[type] && + is_prefix(str, attach_type_strings[type])) + return type; + } + + return __MAX_BPF_ATTACH_TYPE; +} + static void print_boot_time(__u64 nsecs, char *buf, unsigned int size) { struct timespec real_time_ts, boot_time_ts; @@ -697,6 +717,77 @@ int map_replace_compar(const void *p1, const void *p2) return a->idx - b->idx; } +static int do_attach(int argc, char **argv) +{ + enum bpf_attach_type attach_type; + int err, mapfd, progfd; + + if (!REQ_ARGS(5)) { + p_err("too few parameters for map attach"); + return -EINVAL; + } + + progfd = prog_parse_fd(&argc, &argv); + if (progfd < 0) + return progfd; + + attach_type = parse_attach_type(*argv); + if (attach_type == __MAX_BPF_ATTACH_TYPE) { + p_err("invalid attach type"); + return -EINVAL; + } + NEXT_ARG(); + + mapfd = map_parse_fd(&argc, &argv); + if (mapfd < 0) + return mapfd; + + err = bpf_prog_attach(progfd, mapfd, attach_type, 0); + if (err) { + p_err("failed prog attach to map"); + return -EINVAL; + } + + if (json_output) + jsonw_null(json_wtr); + return 0; +} + +static int do_detach(int argc, char **argv) +{ + enum bpf_attach_type attach_type; + int err, mapfd, progfd; + + if (!REQ_ARGS(5)) { + p_err("too few parameters for map detach"); + return -EINVAL; + } + + progfd = prog_parse_fd(&argc, &argv); + if (progfd < 0) + return progfd; + + attach_type = parse_attach_type(*argv); + if (attach_type == __MAX_BPF_ATTACH_TYPE) { + p_err("invalid attach type"); + return -EINVAL; + } + NEXT_ARG(); + + mapfd = map_parse_fd(&argc, &argv); + if (mapfd < 0) + return mapfd; + + err = bpf_prog_detach2(progfd, mapfd, attach_type); + if (err) { + p_err("failed prog detach from map"); + return -EINVAL; + } + + if (json_output) + jsonw_null(json_wtr); + return 0; +} static int do_load(int argc, char **argv) { enum bpf_attach_type expected_attach_type; @@ -942,6 +1033,8 @@ static int do_help(int argc, char **argv) " %s %s pin PROG FILE\n" " %s %s load OBJ FILE [type TYPE] [dev NAME] \\\n" " [map { idx IDX | name NAME } MAP]\n" + " %s %s attach PROG ATTACH_TYPE MAP\n" + " %s %s detach PROG ATTACH_TYPE MAP\n" " %s %s help\n" "\n" " " HELP_SPEC_MAP "\n" @@ -953,10 +1046,12 @@ static int do_help(int argc, char **argv) " cgroup/bind4 | cgroup/bind6 | cgroup/post_bind4 |\n" " cgroup/post_bind6 | cgroup/connect4 | cgroup/connect6 |\n" " cgroup/sendmsg4 | cgroup/sendmsg6 }\n" + " ATTACH_TYPE := { msg_verdict | skb_verdict | skb_parse }\n" " " HELP_SPEC_OPTIONS "\n" "", bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2], - bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2]); + bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2], + bin_name, argv[-2], bin_name, argv[-2]); return 0; } @@ -968,6 +1063,8 @@ static const struct cmd cmds[] = { { "dump", do_dump }, { "pin", do_pin }, { "load", do_load }, + { "attach", do_attach }, + { "detach", do_detach }, { 0 } }; |