1 files changed, 72 insertions, 1 deletions

diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index e05ab58d39e2..39b88e760367 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -422,7 +422,9 @@ static int do_dump(int argc, char **argv)
 {
         unsigned long *func_ksyms = NULL;
         struct bpf_prog_info info = {};
+        unsigned int *func_lens = NULL;
         unsigned int nr_func_ksyms;
+        unsigned int nr_func_lens;
         struct dump_data dd = {};
         __u32 len = sizeof(info);
         unsigned int buf_size;
@@ -508,12 +510,24 @@ static int do_dump(int argc, char **argv)
                 }
         }
 
+        nr_func_lens = info.nr_jited_func_lens;
+        if (nr_func_lens) {
+                func_lens = malloc(nr_func_lens * sizeof(__u32));
+                if (!func_lens) {
+                        p_err("mem alloc failed");
+                        close(fd);
+                        goto err_free;
+                }
+        }
+
         memset(&info, 0, sizeof(info));
 
         *member_ptr = ptr_to_u64(buf);
         *member_len = buf_size;
         info.jited_ksyms = ptr_to_u64(func_ksyms);
         info.nr_jited_ksyms = nr_func_ksyms;
+        info.jited_func_lens = ptr_to_u64(func_lens);
+        info.nr_jited_func_lens = nr_func_lens;
 
         err = bpf_obj_get_info_by_fd(fd, &info, &len);
         close(fd);
@@ -532,6 +546,11 @@ static int do_dump(int argc, char **argv)
                 goto err_free;
         }
 
+        if (info.nr_jited_func_lens > nr_func_lens) {
+                p_err("too many values returned");
+                goto err_free;
+        }
+
         if ((member_len == &info.jited_prog_len &&
              info.jited_prog_insns == 0) ||
             (member_len == &info.xlated_prog_len &&
@@ -569,7 +588,57 @@ static int do_dump(int argc, char **argv)
                                 goto err_free;
                 }
 
-                disasm_print_insn(buf, *member_len, opcodes, name);
+                if (info.nr_jited_func_lens && info.jited_func_lens) {
+                        struct kernel_sym *sym = NULL;
+                        char sym_name[SYM_MAX_NAME];
+                        unsigned char *img = buf;
+                        __u64 *ksyms = NULL;
+                        __u32 *lens;
+                        __u32 i;
+
+                        if (info.nr_jited_ksyms) {
+                                kernel_syms_load(&dd);
+                                ksyms = (__u64 *) info.jited_ksyms;
+                        }
+
+                        if (json_output)
+                                jsonw_start_array(json_wtr);
+
+                        lens = (__u32 *) info.jited_func_lens;
+                        for (i = 0; i < info.nr_jited_func_lens; i++) {
+                                if (ksyms) {
+                                        sym = kernel_syms_search(&dd, ksyms[i]);
+                                        if (sym)
+                                                sprintf(sym_name, "%s", sym->name);
+                                        else
+                                                sprintf(sym_name, "0x%016llx", ksyms[i]);
+                                } else {
+                                        strcpy(sym_name, "unknown");
+                                }
+
+                                if (json_output) {
+                                        jsonw_start_object(json_wtr);
+                                        jsonw_name(json_wtr, "name");
+                                        jsonw_string(json_wtr, sym_name);
+                                        jsonw_name(json_wtr, "insns");
+                                } else {
+                                        printf("%s:\n", sym_name);
+                                }
+
+                                disasm_print_insn(img, lens[i], opcodes, name);
+                                img += lens[i];
+
+                                if (json_output)
+                                        jsonw_end_object(json_wtr);
+                                else
+                                        printf("\n");
+                        }
+
+                        if (json_output)
+                                jsonw_end_array(json_wtr);
+                } else {
+                        disasm_print_insn(buf, *member_len, opcodes, name);
+                }
         } else if (visual) {
                 if (json_output)
                         jsonw_null(json_wtr);
@@ -589,11 +658,13 @@ static int do_dump(int argc, char **argv)
 
         free(buf);
         free(func_ksyms);
+        free(func_lens);
         return 0;
 
 err_free:
         free(buf);
         free(func_ksyms);
+        free(func_lens);
         return -1;
 }