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Diffstat (limited to 'tools/bpf/bpftool/main.h')
| -rw-r--r-- | tools/bpf/bpftool/main.h | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/tools/bpf/bpftool/main.h b/tools/bpf/bpftool/main.h new file mode 100644 index 000000000..057a227bd --- /dev/null +++ b/tools/bpf/bpftool/main.h @@ -0,0 +1,168 @@ +/* + * 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. + */ + +#ifndef __BPF_TOOL_H +#define __BPF_TOOL_H + +/* BFD and kernel.h both define GCC_VERSION, differently */ +#undef GCC_VERSION +#include <stdbool.h> +#include <stdio.h> +#include <linux/bpf.h> +#include <linux/compiler.h> +#include <linux/kernel.h> +#include <linux/hashtable.h> +#include <tools/libc_compat.h> + +#include "json_writer.h" + +#define ptr_to_u64(ptr) ((__u64)(unsigned long)(ptr)) + +#define NEXT_ARG() ({ argc--; argv++; if (argc < 0) usage(); }) +#define NEXT_ARGP() ({ (*argc)--; (*argv)++; if (*argc < 0) usage(); }) +#define BAD_ARG() ({ p_err("what is '%s'?", *argv); -1; }) +#define GET_ARG() ({ argc--; *argv++; }) +#define REQ_ARGS(cnt) \ + ({ \ + int _cnt = (cnt); \ + bool _res; \ + \ + if (argc < _cnt) { \ + p_err("'%s' needs at least %d arguments, %d found", \ + argv[-1], _cnt, argc); \ + _res = false; \ + } else { \ + _res = true; \ + } \ + _res; \ + }) + +#define ERR_MAX_LEN 1024 + +#define BPF_TAG_FMT "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx" + +#define HELP_SPEC_PROGRAM \ + "PROG := { id PROG_ID | pinned FILE | tag PROG_TAG }" +#define HELP_SPEC_OPTIONS \ + "OPTIONS := { {-j|--json} [{-p|--pretty}] | {-f|--bpffs} }" +#define HELP_SPEC_MAP \ + "MAP := { id MAP_ID | pinned FILE }" + +enum bpf_obj_type { + BPF_OBJ_UNKNOWN, + BPF_OBJ_PROG, + BPF_OBJ_MAP, +}; + +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; + +void p_err(const char *fmt, ...); +void p_info(const char *fmt, ...); + +bool is_prefix(const char *pfx, const char *str); +void fprint_hex(FILE *f, void *arg, unsigned int n, const char *sep); +void usage(void) __noreturn; + +struct pinned_obj_table { + DECLARE_HASHTABLE(table, 16); +}; + +struct pinned_obj { + __u32 id; + char *path; + struct hlist_node hash; +}; + +int build_pinned_obj_table(struct pinned_obj_table *table, + enum bpf_obj_type type); +void delete_pinned_obj_table(struct pinned_obj_table *tab); +void print_dev_plain(__u32 ifindex, __u64 ns_dev, __u64 ns_inode); +void print_dev_json(__u32 ifindex, __u64 ns_dev, __u64 ns_inode); + +struct cmd { + const char *cmd; + int (*func)(int argc, char **argv); +}; + +int cmd_select(const struct cmd *cmds, int argc, char **argv, + int (*help)(int argc, char **argv)); + +int get_fd_type(int fd); +const char *get_fd_type_name(enum bpf_obj_type type); +char *get_fdinfo(int fd, const char *key); +int open_obj_pinned(char *path, bool quiet); +int open_obj_pinned_any(char *path, enum bpf_obj_type exp_type); +int do_pin_any(int argc, char **argv, int (*get_fd_by_id)(__u32)); +int do_pin_fd(int fd, const char *name); + +int do_prog(int argc, char **arg); +int do_map(int argc, char **arg); +int do_event_pipe(int argc, char **argv); +int do_cgroup(int argc, char **arg); +int do_perf(int argc, char **arg); + +int prog_parse_fd(int *argc, char ***argv); +int map_parse_fd(int *argc, char ***argv); +int map_parse_fd_and_info(int *argc, char ***argv, void *info, __u32 *info_len); + +void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes, + const char *arch); +void print_data_json(uint8_t *data, size_t len); +void print_hex_data_json(uint8_t *data, size_t len); + +unsigned int get_page_size(void); +unsigned int get_possible_cpus(void); +const char *ifindex_to_bfd_name_ns(__u32 ifindex, __u64 ns_dev, __u64 ns_ino); + +struct btf_dumper { + const struct btf *btf; + json_writer_t *jw; + bool is_plain_text; +}; + +/* btf_dumper_type - print data along with type information + * @d: an instance containing context for dumping types + * @type_id: index in btf->types array. this points to the type to be dumped + * @data: pointer the actual data, i.e. the values to be printed + * + * Returns zero on success and negative error code otherwise + */ +int btf_dumper_type(const struct btf_dumper *d, __u32 type_id, + const void *data); +#endif |