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Diffstat (limited to 'tools/bpf/bpftool/prog.c')
-rw-r--r--tools/bpf/bpftool/prog.c187
1 files changed, 75 insertions, 112 deletions
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index dded77345bfb..f7a810897eac 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -45,9 +45,11 @@
#include <sys/stat.h>
#include <bpf.h>
+#include <libbpf.h>
+#include "cfg.h"
#include "main.h"
-#include "disasm.h"
+#include "xlated_dumper.h"
static const char * const prog_type_name[] = {
[BPF_PROG_TYPE_UNSPEC] = "unspec",
@@ -65,6 +67,7 @@ static const char * const prog_type_name[] = {
[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",
};
static void print_boot_time(__u64 nsecs, char *buf, unsigned int size)
@@ -229,6 +232,8 @@ static void print_prog_json(struct bpf_prog_info *info, int fd)
info->tag[0], info->tag[1], info->tag[2], info->tag[3],
info->tag[4], info->tag[5], info->tag[6], info->tag[7]);
+ print_dev_json(info->ifindex, info->netns_dev, info->netns_ino);
+
if (info->load_time) {
char buf[32];
@@ -286,6 +291,7 @@ static void print_prog_plain(struct bpf_prog_info *info, int fd)
printf("tag ");
fprint_hex(stdout, info->tag, BPF_TAG_SIZE, "");
+ print_dev_plain(info->ifindex, info->netns_dev, info->netns_ino);
printf("\n");
if (info->load_time) {
@@ -402,114 +408,15 @@ static int do_show(int argc, char **argv)
return err;
}
-static void print_insn(struct bpf_verifier_env *env, const char *fmt, ...)
-{
- va_list args;
-
- va_start(args, fmt);
- vprintf(fmt, args);
- va_end(args);
-}
-
-static void dump_xlated_plain(void *buf, unsigned int len, bool opcodes)
-{
- struct bpf_insn *insn = buf;
- bool double_insn = false;
- unsigned int i;
-
- for (i = 0; i < len / sizeof(*insn); i++) {
- if (double_insn) {
- double_insn = false;
- continue;
- }
-
- double_insn = insn[i].code == (BPF_LD | BPF_IMM | BPF_DW);
-
- printf("% 4d: ", i);
- print_bpf_insn(print_insn, NULL, insn + i, true);
-
- if (opcodes) {
- printf(" ");
- fprint_hex(stdout, insn + i, 8, " ");
- if (double_insn && i < len - 1) {
- printf(" ");
- fprint_hex(stdout, insn + i + 1, 8, " ");
- }
- printf("\n");
- }
- }
-}
-
-static void print_insn_json(struct bpf_verifier_env *env, const char *fmt, ...)
-{
- unsigned int l = strlen(fmt);
- char chomped_fmt[l];
- va_list args;
-
- va_start(args, fmt);
- if (l > 0) {
- strncpy(chomped_fmt, fmt, l - 1);
- chomped_fmt[l - 1] = '\0';
- }
- jsonw_vprintf_enquote(json_wtr, chomped_fmt, args);
- va_end(args);
-}
-
-static void dump_xlated_json(void *buf, unsigned int len, bool opcodes)
-{
- struct bpf_insn *insn = buf;
- bool double_insn = false;
- unsigned int i;
-
- jsonw_start_array(json_wtr);
- for (i = 0; i < len / sizeof(*insn); i++) {
- if (double_insn) {
- double_insn = false;
- continue;
- }
- double_insn = insn[i].code == (BPF_LD | BPF_IMM | BPF_DW);
-
- jsonw_start_object(json_wtr);
- jsonw_name(json_wtr, "disasm");
- print_bpf_insn(print_insn_json, NULL, insn + i, true);
-
- if (opcodes) {
- jsonw_name(json_wtr, "opcodes");
- jsonw_start_object(json_wtr);
-
- jsonw_name(json_wtr, "code");
- jsonw_printf(json_wtr, "\"0x%02hhx\"", insn[i].code);
-
- jsonw_name(json_wtr, "src_reg");
- jsonw_printf(json_wtr, "\"0x%hhx\"", insn[i].src_reg);
-
- jsonw_name(json_wtr, "dst_reg");
- jsonw_printf(json_wtr, "\"0x%hhx\"", insn[i].dst_reg);
-
- jsonw_name(json_wtr, "off");
- print_hex_data_json((uint8_t *)(&insn[i].off), 2);
-
- jsonw_name(json_wtr, "imm");
- if (double_insn && i < len - 1)
- print_hex_data_json((uint8_t *)(&insn[i].imm),
- 12);
- else
- print_hex_data_json((uint8_t *)(&insn[i].imm),
- 4);
- jsonw_end_object(json_wtr);
- }
- jsonw_end_object(json_wtr);
- }
- jsonw_end_array(json_wtr);
-}
-
static int do_dump(int argc, char **argv)
{
struct bpf_prog_info info = {};
+ struct dump_data dd = {};
__u32 len = sizeof(info);
unsigned int buf_size;
char *filepath = NULL;
bool opcodes = false;
+ bool visual = false;
unsigned char *buf;
__u32 *member_len;
__u64 *member_ptr;
@@ -548,6 +455,9 @@ static int do_dump(int argc, char **argv)
} else if (is_prefix(*argv, "opcodes")) {
opcodes = true;
NEXT_ARG();
+ } else if (is_prefix(*argv, "visual")) {
+ visual = true;
+ NEXT_ARG();
}
if (argc) {
@@ -593,6 +503,14 @@ static int do_dump(int argc, char **argv)
goto err_free;
}
+ if ((member_len == &info.jited_prog_len &&
+ info.jited_prog_insns == 0) ||
+ (member_len == &info.xlated_prog_len &&
+ info.xlated_prog_insns == 0)) {
+ p_err("error retrieving insn dump: kernel.kptr_restrict set?");
+ goto err_free;
+ }
+
if (filepath) {
fd = open(filepath, O_WRONLY | O_CREAT | O_TRUNC, 0600);
if (fd < 0) {
@@ -608,18 +526,36 @@ static int do_dump(int argc, char **argv)
n < 0 ? strerror(errno) : "short write");
goto err_free;
}
+
+ if (json_output)
+ jsonw_null(json_wtr);
+ } else if (member_len == &info.jited_prog_len) {
+ const char *name = NULL;
+
+ if (info.ifindex) {
+ name = ifindex_to_bfd_name_ns(info.ifindex,
+ info.netns_dev,
+ info.netns_ino);
+ if (!name)
+ goto err_free;
+ }
+
+ disasm_print_insn(buf, *member_len, opcodes, name);
+ } else if (visual) {
+ if (json_output)
+ jsonw_null(json_wtr);
+ else
+ dump_xlated_cfg(buf, *member_len);
} else {
- if (member_len == &info.jited_prog_len)
- disasm_print_insn(buf, *member_len, opcodes);
+ kernel_syms_load(&dd);
+ if (json_output)
+ dump_xlated_json(&dd, buf, *member_len, opcodes);
else
- if (json_output)
- dump_xlated_json(buf, *member_len, opcodes);
- else
- dump_xlated_plain(buf, *member_len, opcodes);
+ dump_xlated_plain(&dd, buf, *member_len, opcodes);
+ kernel_syms_destroy(&dd);
}
free(buf);
-
return 0;
err_free:
@@ -637,6 +573,30 @@ static int do_pin(int argc, char **argv)
return err;
}
+static int do_load(int argc, char **argv)
+{
+ struct bpf_object *obj;
+ int prog_fd;
+
+ if (argc != 2)
+ usage();
+
+ if (bpf_prog_load(argv[0], BPF_PROG_TYPE_UNSPEC, &obj, &prog_fd)) {
+ p_err("failed to load program");
+ return -1;
+ }
+
+ if (do_pin_fd(prog_fd, argv[1])) {
+ p_err("failed to pin program");
+ return -1;
+ }
+
+ if (json_output)
+ jsonw_null(json_wtr);
+
+ return 0;
+}
+
static int do_help(int argc, char **argv)
{
if (json_output) {
@@ -645,26 +605,29 @@ static int do_help(int argc, char **argv)
}
fprintf(stderr,
- "Usage: %s %s show [PROG]\n"
- " %s %s dump xlated PROG [{ file FILE | opcodes }]\n"
+ "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 pin PROG FILE\n"
+ " %s %s load OBJ FILE\n"
" %s %s help\n"
"\n"
" " HELP_SPEC_PROGRAM "\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]);
return 0;
}
static const struct cmd cmds[] = {
{ "show", do_show },
+ { "list", do_show },
{ "help", do_help },
{ "dump", do_dump },
{ "pin", do_pin },
+ { "load", do_load },
{ 0 }
};
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