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Diffstat (limited to '')
| -rw-r--r-- | tools/bpf/bpftool/main.h | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/tools/bpf/bpftool/main.h b/tools/bpf/bpftool/main.h new file mode 100644 index 000000000..c46e52137 --- /dev/null +++ b/tools/bpf/bpftool/main.h @@ -0,0 +1,261 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ +/* Copyright (C) 2017-2018 Netronome Systems, Inc. */ + +#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 <bpf/libbpf.h> + +#include "json_writer.h" + +/* Make sure we do not use kernel-only integer typedefs */ +#pragma GCC poison u8 u16 u32 u64 s8 s16 s32 s64 + +static inline __u64 ptr_to_u64(const void *ptr) +{ + return (__u64)(unsigned long)ptr; +} + +static inline void *u64_to_ptr(__u64 ptr) +{ + return (void *)(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 | name PROG_NAME }" +#define HELP_SPEC_OPTIONS \ + "OPTIONS := { {-j|--json} [{-p|--pretty}] | {-f|--bpffs} |\n" \ + "\t {-m|--mapcompat} | {-n|--nomount} }" +#define HELP_SPEC_MAP \ + "MAP := { id MAP_ID | pinned FILE | name MAP_NAME }" +#define HELP_SPEC_LINK \ + "LINK := { id LINK_ID | pinned FILE }" + +extern const char * const prog_type_name[]; +extern const size_t prog_type_name_size; + +extern const char * const attach_type_name[__MAX_BPF_ATTACH_TYPE]; + +extern const char * const map_type_name[]; +extern const size_t map_type_name_size; + +/* keep in sync with the definition in skeleton/pid_iter.bpf.c */ +enum bpf_obj_type { + BPF_OBJ_UNKNOWN, + BPF_OBJ_PROG, + BPF_OBJ_MAP, + BPF_OBJ_LINK, + BPF_OBJ_BTF, +}; + +extern const char *bin_name; + +extern json_writer_t *json_wtr; +extern bool json_output; +extern bool show_pinned; +extern bool show_pids; +extern bool block_mount; +extern bool verifier_logs; +extern bool relaxed_maps; +extern struct pinned_obj_table prog_table; +extern struct pinned_obj_table map_table; +extern struct pinned_obj_table link_table; +extern struct obj_refs_table refs_table; + +void __printf(1, 2) p_err(const char *fmt, ...); +void __printf(1, 2) p_info(const char *fmt, ...); + +bool is_prefix(const char *pfx, const char *str); +int detect_common_prefix(const char *arg, ...); +void fprint_hex(FILE *f, void *arg, unsigned int n, const char *sep); +void usage(void) __noreturn; + +void set_max_rlimit(void); + +int mount_tracefs(const char *target); + +struct pinned_obj_table { + DECLARE_HASHTABLE(table, 16); +}; + +struct pinned_obj { + __u32 id; + char *path; + struct hlist_node hash; +}; + +struct obj_refs_table { + DECLARE_HASHTABLE(table, 16); +}; + +struct obj_ref { + int pid; + char comm[16]; +}; + +struct obj_refs { + struct hlist_node node; + __u32 id; + int ref_cnt; + struct obj_ref *refs; +}; + +struct btf; +struct bpf_line_info; + +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); +__weak int build_obj_refs_table(struct obj_refs_table *table, + enum bpf_obj_type type); +__weak void delete_obj_refs_table(struct obj_refs_table *table); +__weak void emit_obj_refs_json(struct obj_refs_table *table, __u32 id, + json_writer_t *json_wtr); +__weak void emit_obj_refs_plain(struct obj_refs_table *table, __u32 id, + const char *prefix); +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(const char *path, bool quiet); +int open_obj_pinned_any(const char *path, enum bpf_obj_type exp_type); +int mount_bpffs_for_pin(const char *name); +int do_pin_any(int argc, char **argv, int (*get_fd_by_id)(int *, char ***)); +int do_pin_fd(int fd, const char *name); + +/* commands available in bootstrap mode */ +int do_gen(int argc, char **argv); +int do_btf(int argc, char **argv); + +/* non-bootstrap only commands */ +int do_prog(int argc, char **arg) __weak; +int do_map(int argc, char **arg) __weak; +int do_link(int argc, char **arg) __weak; +int do_event_pipe(int argc, char **argv) __weak; +int do_cgroup(int argc, char **arg) __weak; +int do_perf(int argc, char **arg) __weak; +int do_net(int argc, char **arg) __weak; +int do_tracelog(int argc, char **arg) __weak; +int do_feature(int argc, char **argv) __weak; +int do_struct_ops(int argc, char **argv) __weak; +int do_iter(int argc, char **argv) __weak; + +int parse_u32_arg(int *argc, char ***argv, __u32 *val, const char *what); +int prog_parse_fd(int *argc, char ***argv); +int prog_parse_fds(int *argc, char ***argv, int **fds); +int map_parse_fd(int *argc, char ***argv); +int map_parse_fds(int *argc, char ***argv, int **fds); +int map_parse_fd_and_info(int *argc, char ***argv, void *info, __u32 *info_len); + +struct bpf_prog_linfo; +#ifdef HAVE_LIBBFD_SUPPORT +void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes, + const char *arch, const char *disassembler_options, + const struct btf *btf, + const struct bpf_prog_linfo *prog_linfo, + __u64 func_ksym, unsigned int func_idx, + bool linum); +int disasm_init(void); +#else +static inline +void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes, + const char *arch, const char *disassembler_options, + const struct btf *btf, + const struct bpf_prog_linfo *prog_linfo, + __u64 func_ksym, unsigned int func_idx, + bool linum) +{ +} +static inline int disasm_init(void) +{ + p_err("No libbfd support"); + return -1; +} +#endif +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_params(__u32 ifindex, __u64 ns_dev, __u64 ns_ino, + const char **opt); + +struct btf_dumper { + const struct btf *btf; + json_writer_t *jw; + bool is_plain_text; + bool prog_id_as_func_ptr; +}; + +/* 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); +void btf_dumper_type_only(const struct btf *btf, __u32 func_type_id, + char *func_only, int size); + +void btf_dump_linfo_plain(const struct btf *btf, + const struct bpf_line_info *linfo, + const char *prefix, bool linum); +void btf_dump_linfo_json(const struct btf *btf, + const struct bpf_line_info *linfo, bool linum); + +struct nlattr; +struct ifinfomsg; +struct tcmsg; +int do_xdp_dump(struct ifinfomsg *ifinfo, struct nlattr **tb); +int do_filter_dump(struct tcmsg *ifinfo, struct nlattr **tb, const char *kind, + const char *devname, int ifindex); + +int print_all_levels(__maybe_unused enum libbpf_print_level level, + const char *format, va_list args); +#endif |