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-rw-r--r--tools/bpf/bpftool/prog.c404
1 files changed, 278 insertions, 126 deletions
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index ccee180dfb76..2d1bb7d6ff51 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -1,35 +1,5 @@
-/*
- * Copyright (C) 2017-2018 Netronome Systems, Inc.
- *
- * This software is dual licensed under the GNU General License Version 2,
- * June 1991 as shown in the file COPYING in the top-level directory of this
- * source tree or the BSD 2-Clause License provided below. You have the
- * option to license this software under the complete terms of either license.
- *
- * The BSD 2-Clause License:
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * 1. Redistributions of source code must retain the above
- * copyright notice, this list of conditions and the following
- * disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials
- * provided with the distribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
#define _GNU_SOURCE
#include <errno.h>
@@ -47,44 +17,22 @@
#include <linux/err.h>
#include <bpf.h>
+#include <btf.h>
#include <libbpf.h>
#include "cfg.h"
#include "main.h"
#include "xlated_dumper.h"
-static const char * const prog_type_name[] = {
- [BPF_PROG_TYPE_UNSPEC] = "unspec",
- [BPF_PROG_TYPE_SOCKET_FILTER] = "socket_filter",
- [BPF_PROG_TYPE_KPROBE] = "kprobe",
- [BPF_PROG_TYPE_SCHED_CLS] = "sched_cls",
- [BPF_PROG_TYPE_SCHED_ACT] = "sched_act",
- [BPF_PROG_TYPE_TRACEPOINT] = "tracepoint",
- [BPF_PROG_TYPE_XDP] = "xdp",
- [BPF_PROG_TYPE_PERF_EVENT] = "perf_event",
- [BPF_PROG_TYPE_CGROUP_SKB] = "cgroup_skb",
- [BPF_PROG_TYPE_CGROUP_SOCK] = "cgroup_sock",
- [BPF_PROG_TYPE_LWT_IN] = "lwt_in",
- [BPF_PROG_TYPE_LWT_OUT] = "lwt_out",
- [BPF_PROG_TYPE_LWT_XMIT] = "lwt_xmit",
- [BPF_PROG_TYPE_SOCK_OPS] = "sock_ops",
- [BPF_PROG_TYPE_SK_SKB] = "sk_skb",
- [BPF_PROG_TYPE_CGROUP_DEVICE] = "cgroup_device",
- [BPF_PROG_TYPE_SK_MSG] = "sk_msg",
- [BPF_PROG_TYPE_RAW_TRACEPOINT] = "raw_tracepoint",
- [BPF_PROG_TYPE_CGROUP_SOCK_ADDR] = "cgroup_sock_addr",
- [BPF_PROG_TYPE_LIRC_MODE2] = "lirc_mode2",
- [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",
+ [BPF_FLOW_DISSECTOR] = "flow_dissector",
[__MAX_BPF_ATTACH_TYPE] = NULL,
};
-enum bpf_attach_type parse_attach_type(const char *str)
+static enum bpf_attach_type parse_attach_type(const char *str)
{
enum bpf_attach_type type;
@@ -445,6 +393,10 @@ static int do_show(int argc, char **argv)
static int do_dump(int argc, char **argv)
{
+ unsigned int finfo_rec_size, linfo_rec_size, jited_linfo_rec_size;
+ void *func_info = NULL, *linfo = NULL, *jited_linfo = NULL;
+ unsigned int nr_finfo, nr_linfo = 0, nr_jited_linfo = 0;
+ struct bpf_prog_linfo *prog_linfo = NULL;
unsigned long *func_ksyms = NULL;
struct bpf_prog_info info = {};
unsigned int *func_lens = NULL;
@@ -453,11 +405,14 @@ static int do_dump(int argc, char **argv)
unsigned int nr_func_lens;
struct dump_data dd = {};
__u32 len = sizeof(info);
+ struct btf *btf = NULL;
unsigned int buf_size;
char *filepath = NULL;
bool opcodes = false;
bool visual = false;
+ char func_sig[1024];
unsigned char *buf;
+ bool linum = false;
__u32 *member_len;
__u64 *member_ptr;
ssize_t n;
@@ -465,6 +420,9 @@ static int do_dump(int argc, char **argv)
int fd;
if (is_prefix(*argv, "jited")) {
+ if (disasm_init())
+ return -1;
+
member_len = &info.jited_prog_len;
member_ptr = &info.jited_prog_insns;
} else if (is_prefix(*argv, "xlated")) {
@@ -498,6 +456,9 @@ static int do_dump(int argc, char **argv)
} else if (is_prefix(*argv, "visual")) {
visual = true;
NEXT_ARG();
+ } else if (is_prefix(*argv, "linum")) {
+ linum = true;
+ NEXT_ARG();
}
if (argc) {
@@ -546,6 +507,43 @@ static int do_dump(int argc, char **argv)
}
}
+ nr_finfo = info.nr_func_info;
+ finfo_rec_size = info.func_info_rec_size;
+ if (nr_finfo && finfo_rec_size) {
+ func_info = malloc(nr_finfo * finfo_rec_size);
+ if (!func_info) {
+ p_err("mem alloc failed");
+ close(fd);
+ goto err_free;
+ }
+ }
+
+ linfo_rec_size = info.line_info_rec_size;
+ if (info.nr_line_info && linfo_rec_size && info.btf_id) {
+ nr_linfo = info.nr_line_info;
+ linfo = malloc(nr_linfo * linfo_rec_size);
+ if (!linfo) {
+ p_err("mem alloc failed");
+ close(fd);
+ goto err_free;
+ }
+ }
+
+ jited_linfo_rec_size = info.jited_line_info_rec_size;
+ if (info.nr_jited_line_info &&
+ jited_linfo_rec_size &&
+ info.nr_jited_ksyms &&
+ info.nr_jited_func_lens &&
+ info.btf_id) {
+ nr_jited_linfo = info.nr_jited_line_info;
+ jited_linfo = malloc(nr_jited_linfo * jited_linfo_rec_size);
+ if (!jited_linfo) {
+ p_err("mem alloc failed");
+ close(fd);
+ goto err_free;
+ }
+ }
+
memset(&info, 0, sizeof(info));
*member_ptr = ptr_to_u64(buf);
@@ -554,6 +552,15 @@ static int do_dump(int argc, char **argv)
info.nr_jited_ksyms = nr_func_ksyms;
info.jited_func_lens = ptr_to_u64(func_lens);
info.nr_jited_func_lens = nr_func_lens;
+ info.nr_func_info = nr_finfo;
+ info.func_info_rec_size = finfo_rec_size;
+ info.func_info = ptr_to_u64(func_info);
+ info.nr_line_info = nr_linfo;
+ info.line_info_rec_size = linfo_rec_size;
+ info.line_info = ptr_to_u64(linfo);
+ info.nr_jited_line_info = nr_jited_linfo;
+ info.jited_line_info_rec_size = jited_linfo_rec_size;
+ info.jited_line_info = ptr_to_u64(jited_linfo);
err = bpf_obj_get_info_by_fd(fd, &info, &len);
close(fd);
@@ -577,6 +584,42 @@ static int do_dump(int argc, char **argv)
goto err_free;
}
+ if (info.nr_func_info != nr_finfo) {
+ p_err("incorrect nr_func_info %d vs. expected %d",
+ info.nr_func_info, nr_finfo);
+ goto err_free;
+ }
+
+ if (info.func_info_rec_size != finfo_rec_size) {
+ p_err("incorrect func_info_rec_size %d vs. expected %d",
+ info.func_info_rec_size, finfo_rec_size);
+ goto err_free;
+ }
+
+ if (linfo && info.nr_line_info != nr_linfo) {
+ p_err("incorrect nr_line_info %u vs. expected %u",
+ info.nr_line_info, nr_linfo);
+ goto err_free;
+ }
+
+ if (info.line_info_rec_size != linfo_rec_size) {
+ p_err("incorrect line_info_rec_size %u vs. expected %u",
+ info.line_info_rec_size, linfo_rec_size);
+ goto err_free;
+ }
+
+ if (jited_linfo && info.nr_jited_line_info != nr_jited_linfo) {
+ p_err("incorrect nr_jited_line_info %u vs. expected %u",
+ info.nr_jited_line_info, nr_jited_linfo);
+ goto err_free;
+ }
+
+ if (info.jited_line_info_rec_size != jited_linfo_rec_size) {
+ p_err("incorrect jited_line_info_rec_size %u vs. expected %u",
+ info.jited_line_info_rec_size, jited_linfo_rec_size);
+ goto err_free;
+ }
+
if ((member_len == &info.jited_prog_len &&
info.jited_prog_insns == 0) ||
(member_len == &info.xlated_prog_len &&
@@ -585,6 +628,17 @@ static int do_dump(int argc, char **argv)
goto err_free;
}
+ if (info.btf_id && btf__get_from_id(info.btf_id, &btf)) {
+ p_err("failed to get btf");
+ goto err_free;
+ }
+
+ if (nr_linfo) {
+ prog_linfo = bpf_prog_linfo__new(&info);
+ if (!prog_linfo)
+ p_info("error in processing bpf_line_info. continue without it.");
+ }
+
if (filepath) {
fd = open(filepath, O_WRONLY | O_CREAT | O_TRUNC, 0600);
if (fd < 0) {
@@ -617,6 +671,7 @@ static int do_dump(int argc, char **argv)
if (info.nr_jited_func_lens && info.jited_func_lens) {
struct kernel_sym *sym = NULL;
+ struct bpf_func_info *record;
char sym_name[SYM_MAX_NAME];
unsigned char *img = buf;
__u64 *ksyms = NULL;
@@ -643,17 +698,33 @@ static int do_dump(int argc, char **argv)
strcpy(sym_name, "unknown");
}
+ if (func_info) {
+ record = func_info + i * finfo_rec_size;
+ btf_dumper_type_only(btf, record->type_id,
+ func_sig,
+ sizeof(func_sig));
+ }
+
if (json_output) {
jsonw_start_object(json_wtr);
+ if (func_info && func_sig[0] != '\0') {
+ jsonw_name(json_wtr, "proto");
+ jsonw_string(json_wtr, func_sig);
+ }
jsonw_name(json_wtr, "name");
jsonw_string(json_wtr, sym_name);
jsonw_name(json_wtr, "insns");
} else {
+ if (func_info && func_sig[0] != '\0')
+ printf("%s:\n", func_sig);
printf("%s:\n", sym_name);
}
- disasm_print_insn(img, lens[i], opcodes, name,
- disasm_opt);
+ disasm_print_insn(img, lens[i], opcodes,
+ name, disasm_opt, btf,
+ prog_linfo, ksyms[i], i,
+ linum);
+
img += lens[i];
if (json_output)
@@ -666,7 +737,7 @@ static int do_dump(int argc, char **argv)
jsonw_end_array(json_wtr);
} else {
disasm_print_insn(buf, *member_len, opcodes, name,
- disasm_opt);
+ disasm_opt, btf, NULL, 0, 0, false);
}
} else if (visual) {
if (json_output)
@@ -677,23 +748,37 @@ static int do_dump(int argc, char **argv)
kernel_syms_load(&dd);
dd.nr_jited_ksyms = info.nr_jited_ksyms;
dd.jited_ksyms = (__u64 *) info.jited_ksyms;
+ dd.btf = btf;
+ dd.func_info = func_info;
+ dd.finfo_rec_size = finfo_rec_size;
+ dd.prog_linfo = prog_linfo;
if (json_output)
- dump_xlated_json(&dd, buf, *member_len, opcodes);
+ dump_xlated_json(&dd, buf, *member_len, opcodes,
+ linum);
else
- dump_xlated_plain(&dd, buf, *member_len, opcodes);
+ dump_xlated_plain(&dd, buf, *member_len, opcodes,
+ linum);
kernel_syms_destroy(&dd);
}
free(buf);
free(func_ksyms);
free(func_lens);
+ free(func_info);
+ free(linfo);
+ free(jited_linfo);
+ bpf_prog_linfo__free(prog_linfo);
return 0;
err_free:
free(buf);
free(func_ksyms);
free(func_lens);
+ free(func_info);
+ free(linfo);
+ free(jited_linfo);
+ bpf_prog_linfo__free(prog_linfo);
return -1;
}
@@ -713,37 +798,56 @@ struct map_replace {
char *name;
};
-int map_replace_compar(const void *p1, const void *p2)
+static int map_replace_compar(const void *p1, const void *p2)
{
const struct map_replace *a = p1, *b = p2;
return a->idx - b->idx;
}
-static int do_attach(int argc, char **argv)
+static int parse_attach_detach_args(int argc, char **argv, int *progfd,
+ enum bpf_attach_type *attach_type,
+ int *mapfd)
{
- enum bpf_attach_type attach_type;
- int err, mapfd, progfd;
-
- if (!REQ_ARGS(5)) {
- p_err("too few parameters for map attach");
+ if (!REQ_ARGS(3))
return -EINVAL;
- }
- progfd = prog_parse_fd(&argc, &argv);
- if (progfd < 0)
- return progfd;
+ *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");
+ *attach_type = parse_attach_type(*argv);
+ if (*attach_type == __MAX_BPF_ATTACH_TYPE) {
+ p_err("invalid attach/detach type");
return -EINVAL;
}
+
+ if (*attach_type == BPF_FLOW_DISSECTOR) {
+ *mapfd = -1;
+ return 0;
+ }
+
NEXT_ARG();
+ if (!REQ_ARGS(2))
+ return -EINVAL;
+
+ *mapfd = map_parse_fd(&argc, &argv);
+ if (*mapfd < 0)
+ return *mapfd;
+
+ return 0;
+}
- mapfd = map_parse_fd(&argc, &argv);
- if (mapfd < 0)
- return mapfd;
+static int do_attach(int argc, char **argv)
+{
+ enum bpf_attach_type attach_type;
+ int err, progfd;
+ int mapfd;
+
+ err = parse_attach_detach_args(argc, argv,
+ &progfd, &attach_type, &mapfd);
+ if (err)
+ return err;
err = bpf_prog_attach(progfd, mapfd, attach_type, 0);
if (err) {
@@ -759,27 +863,13 @@ static int do_attach(int argc, char **argv)
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;
- }
+ int err, progfd;
+ int mapfd;
- 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 = parse_attach_detach_args(argc, argv,
+ &progfd, &attach_type, &mapfd);
+ if (err)
+ return err;
err = bpf_prog_detach2(progfd, mapfd, attach_type);
if (err) {
@@ -791,15 +881,17 @@ static int do_detach(int argc, char **argv)
jsonw_null(json_wtr);
return 0;
}
-static int do_load(int argc, char **argv)
+
+static int load_with_options(int argc, char **argv, bool first_prog_only)
{
enum bpf_attach_type expected_attach_type;
struct bpf_object_open_attr attr = {
.prog_type = BPF_PROG_TYPE_UNSPEC,
};
struct map_replace *map_replace = NULL;
+ struct bpf_program *prog = NULL, *pos;
unsigned int old_map_fds = 0;
- struct bpf_program *prog;
+ const char *pinmaps = NULL;
struct bpf_object *obj;
struct bpf_map *map;
const char *pinfile;
@@ -908,6 +1000,13 @@ static int do_load(int argc, char **argv)
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);
@@ -921,26 +1020,25 @@ static int do_load(int argc, char **argv)
goto err_free_reuse_maps;
}
- prog = bpf_program__next(NULL, obj);
- if (!prog) {
- p_err("object file doesn't contain any bpf program");
- goto err_close_obj;
- }
+ bpf_object__for_each_program(pos, obj) {
+ enum bpf_prog_type prog_type = attr.prog_type;
- bpf_program__set_ifindex(prog, ifindex);
- if (attr.prog_type == BPF_PROG_TYPE_UNSPEC) {
- const char *sec_name = bpf_program__title(prog, false);
+ if (attr.prog_type == BPF_PROG_TYPE_UNSPEC) {
+ const char *sec_name = bpf_program__title(pos, false);
- err = libbpf_prog_type_by_name(sec_name, &attr.prog_type,
- &expected_attach_type);
- if (err < 0) {
- p_err("failed to guess program type based on section name %s\n",
- sec_name);
- goto err_close_obj;
+ err = libbpf_prog_type_by_name(sec_name, &prog_type,
+ &expected_attach_type);
+ if (err < 0) {
+ p_err("failed to guess program type based on section name %s\n",
+ sec_name);
+ goto err_close_obj;
+ }
}
+
+ bpf_program__set_ifindex(pos, ifindex);
+ bpf_program__set_type(pos, prog_type);
+ bpf_program__set_expected_attach_type(pos, expected_attach_type);
}
- bpf_program__set_type(prog, attr.prog_type);
- bpf_program__set_expected_attach_type(prog, expected_attach_type);
qsort(map_replace, old_map_fds, sizeof(*map_replace),
map_replace_compar);
@@ -998,15 +1096,47 @@ static int do_load(int argc, char **argv)
goto err_close_obj;
}
+ set_max_rlimit();
+
err = bpf_object__load(obj);
if (err) {
p_err("failed to load object file");
goto err_close_obj;
}
- if (do_pin_fd(bpf_program__fd(prog), pinfile))
+ err = mount_bpffs_for_pin(pinfile);
+ if (err)
goto err_close_obj;
+ if (first_prog_only) {
+ prog = bpf_program__next(NULL, obj);
+ if (!prog) {
+ p_err("object file doesn't contain any bpf program");
+ goto err_close_obj;
+ }
+
+ err = bpf_obj_pin(bpf_program__fd(prog), pinfile);
+ if (err) {
+ p_err("failed to pin program %s",
+ bpf_program__title(prog, false));
+ goto err_close_obj;
+ }
+ } else {
+ err = bpf_object__pin_programs(obj, pinfile);
+ if (err) {
+ p_err("failed to pin all programs");
+ goto err_close_obj;
+ }
+ }
+
+ 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);
@@ -1017,6 +1147,11 @@ static int do_load(int argc, char **argv)
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:
@@ -1026,6 +1161,16 @@ err_free_reuse_maps:
return -1;
}
+static int do_load(int argc, char **argv)
+{
+ return load_with_options(argc, argv, true);
+}
+
+static int do_loadall(int argc, char **argv)
+{
+ return load_with_options(argc, argv, false);
+}
+
static int do_help(int argc, char **argv)
{
if (json_output) {
@@ -1035,13 +1180,16 @@ static int do_help(int argc, char **argv)
fprintf(stderr,
"Usage: %s %s { show | list } [PROG]\n"
- " %s %s dump xlated PROG [{ file FILE | opcodes | visual }]\n"
- " %s %s dump jited PROG [{ file FILE | opcodes }]\n"
+ " %s %s dump xlated PROG [{ file FILE | opcodes | visual | linum }]\n"
+ " %s %s dump jited PROG [{ file FILE | opcodes | linum }]\n"
" %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 { load | loadall } OBJ PATH \\\n"
+ " [type TYPE] [dev NAME] \\\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 tracelog\n"
" %s %s help\n"
"\n"
" " HELP_SPEC_MAP "\n"
@@ -1050,15 +1198,17 @@ static int do_help(int argc, char **argv)
" tracepoint | raw_tracepoint | xdp | perf_event | cgroup/skb |\n"
" cgroup/sock | cgroup/dev | lwt_in | lwt_out | lwt_xmit |\n"
" lwt_seg6local | sockops | sk_skb | sk_msg | lirc_mode2 |\n"
+ " sk_reuseport | flow_dissector |\n"
" 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"
+ " ATTACH_TYPE := { msg_verdict | skb_verdict | skb_parse |\n"
+ " flow_dissector }\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;
}
@@ -1070,8 +1220,10 @@ static const struct cmd cmds[] = {
{ "dump", do_dump },
{ "pin", do_pin },
{ "load", do_load },
+ { "loadall", do_loadall },
{ "attach", do_attach },
{ "detach", do_detach },
+ { "tracelog", do_tracelog },
{ 0 }
};
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