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263 lines
7.7 KiB
263 lines
7.7 KiB
/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */ |
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/* Copyright (C) 2017-2018 Netronome Systems, Inc. */ |
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#ifndef __BPF_TOOL_H |
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#define __BPF_TOOL_H |
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/* BFD and kernel.h both define GCC_VERSION, differently */ |
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#undef GCC_VERSION |
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#include <stdbool.h> |
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#include <stdio.h> |
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#include <linux/bpf.h> |
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#include <linux/compiler.h> |
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#include <linux/kernel.h> |
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#include <linux/hashtable.h> |
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#include <tools/libc_compat.h> |
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#include <bpf/libbpf.h> |
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#include "json_writer.h" |
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/* Make sure we do not use kernel-only integer typedefs */ |
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#pragma GCC poison u8 u16 u32 u64 s8 s16 s32 s64 |
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static inline __u64 ptr_to_u64(const void *ptr) |
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{ |
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return (__u64)(unsigned long)ptr; |
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} |
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static inline void *u64_to_ptr(__u64 ptr) |
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{ |
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return (void *)(unsigned long)ptr; |
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} |
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#define NEXT_ARG() ({ argc--; argv++; if (argc < 0) usage(); }) |
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#define NEXT_ARGP() ({ (*argc)--; (*argv)++; if (*argc < 0) usage(); }) |
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#define BAD_ARG() ({ p_err("what is '%s'?", *argv); -1; }) |
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#define GET_ARG() ({ argc--; *argv++; }) |
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#define REQ_ARGS(cnt) \ |
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({ \ |
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int _cnt = (cnt); \ |
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bool _res; \ |
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\ |
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if (argc < _cnt) { \ |
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p_err("'%s' needs at least %d arguments, %d found", \ |
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argv[-1], _cnt, argc); \ |
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_res = false; \ |
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} else { \ |
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_res = true; \ |
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} \ |
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_res; \ |
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}) |
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#define ERR_MAX_LEN 1024 |
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#define BPF_TAG_FMT "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx" |
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#define HELP_SPEC_PROGRAM \ |
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"PROG := { id PROG_ID | pinned FILE | tag PROG_TAG | name PROG_NAME }" |
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#define HELP_SPEC_OPTIONS \ |
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"OPTIONS := { {-j|--json} [{-p|--pretty}] | {-f|--bpffs} |\n" \ |
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"\t {-m|--mapcompat} | {-n|--nomount} }" |
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#define HELP_SPEC_MAP \ |
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"MAP := { id MAP_ID | pinned FILE | name MAP_NAME }" |
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#define HELP_SPEC_LINK \ |
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"LINK := { id LINK_ID | pinned FILE }" |
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extern const char * const prog_type_name[]; |
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extern const size_t prog_type_name_size; |
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extern const char * const attach_type_name[__MAX_BPF_ATTACH_TYPE]; |
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extern const char * const map_type_name[]; |
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extern const size_t map_type_name_size; |
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/* keep in sync with the definition in skeleton/pid_iter.bpf.c */ |
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enum bpf_obj_type { |
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BPF_OBJ_UNKNOWN, |
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BPF_OBJ_PROG, |
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BPF_OBJ_MAP, |
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BPF_OBJ_LINK, |
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BPF_OBJ_BTF, |
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}; |
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extern const char *bin_name; |
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extern json_writer_t *json_wtr; |
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extern bool json_output; |
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extern bool show_pinned; |
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extern bool show_pids; |
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extern bool block_mount; |
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extern bool verifier_logs; |
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extern bool relaxed_maps; |
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extern bool use_loader; |
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extern struct btf *base_btf; |
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extern struct pinned_obj_table prog_table; |
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extern struct pinned_obj_table map_table; |
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extern struct pinned_obj_table link_table; |
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extern struct obj_refs_table refs_table; |
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void __printf(1, 2) p_err(const char *fmt, ...); |
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void __printf(1, 2) p_info(const char *fmt, ...); |
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bool is_prefix(const char *pfx, const char *str); |
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int detect_common_prefix(const char *arg, ...); |
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void fprint_hex(FILE *f, void *arg, unsigned int n, const char *sep); |
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void usage(void) __noreturn; |
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void set_max_rlimit(void); |
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int mount_tracefs(const char *target); |
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struct pinned_obj_table { |
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DECLARE_HASHTABLE(table, 16); |
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}; |
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struct pinned_obj { |
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__u32 id; |
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char *path; |
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struct hlist_node hash; |
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}; |
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struct obj_refs_table { |
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DECLARE_HASHTABLE(table, 16); |
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}; |
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struct obj_ref { |
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int pid; |
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char comm[16]; |
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}; |
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struct obj_refs { |
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struct hlist_node node; |
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__u32 id; |
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int ref_cnt; |
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struct obj_ref *refs; |
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}; |
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struct btf; |
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struct bpf_line_info; |
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int build_pinned_obj_table(struct pinned_obj_table *table, |
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enum bpf_obj_type type); |
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void delete_pinned_obj_table(struct pinned_obj_table *tab); |
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__weak int build_obj_refs_table(struct obj_refs_table *table, |
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enum bpf_obj_type type); |
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__weak void delete_obj_refs_table(struct obj_refs_table *table); |
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__weak void emit_obj_refs_json(struct obj_refs_table *table, __u32 id, |
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json_writer_t *json_wtr); |
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__weak void emit_obj_refs_plain(struct obj_refs_table *table, __u32 id, |
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const char *prefix); |
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void print_dev_plain(__u32 ifindex, __u64 ns_dev, __u64 ns_inode); |
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void print_dev_json(__u32 ifindex, __u64 ns_dev, __u64 ns_inode); |
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struct cmd { |
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const char *cmd; |
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int (*func)(int argc, char **argv); |
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}; |
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int cmd_select(const struct cmd *cmds, int argc, char **argv, |
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int (*help)(int argc, char **argv)); |
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int get_fd_type(int fd); |
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const char *get_fd_type_name(enum bpf_obj_type type); |
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char *get_fdinfo(int fd, const char *key); |
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int open_obj_pinned(const char *path, bool quiet); |
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int open_obj_pinned_any(const char *path, enum bpf_obj_type exp_type); |
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int mount_bpffs_for_pin(const char *name); |
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int do_pin_any(int argc, char **argv, int (*get_fd_by_id)(int *, char ***)); |
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int do_pin_fd(int fd, const char *name); |
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/* commands available in bootstrap mode */ |
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int do_gen(int argc, char **argv); |
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int do_btf(int argc, char **argv); |
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/* non-bootstrap only commands */ |
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int do_prog(int argc, char **arg) __weak; |
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int do_map(int argc, char **arg) __weak; |
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int do_link(int argc, char **arg) __weak; |
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int do_event_pipe(int argc, char **argv) __weak; |
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int do_cgroup(int argc, char **arg) __weak; |
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int do_perf(int argc, char **arg) __weak; |
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int do_net(int argc, char **arg) __weak; |
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int do_tracelog(int argc, char **arg) __weak; |
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int do_feature(int argc, char **argv) __weak; |
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int do_struct_ops(int argc, char **argv) __weak; |
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int do_iter(int argc, char **argv) __weak; |
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int parse_u32_arg(int *argc, char ***argv, __u32 *val, const char *what); |
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int prog_parse_fd(int *argc, char ***argv); |
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int prog_parse_fds(int *argc, char ***argv, int **fds); |
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int map_parse_fd(int *argc, char ***argv); |
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int map_parse_fds(int *argc, char ***argv, int **fds); |
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int map_parse_fd_and_info(int *argc, char ***argv, void *info, __u32 *info_len); |
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struct bpf_prog_linfo; |
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#ifdef HAVE_LIBBFD_SUPPORT |
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void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes, |
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const char *arch, const char *disassembler_options, |
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const struct btf *btf, |
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const struct bpf_prog_linfo *prog_linfo, |
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__u64 func_ksym, unsigned int func_idx, |
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bool linum); |
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int disasm_init(void); |
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#else |
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static inline |
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void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes, |
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const char *arch, const char *disassembler_options, |
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const struct btf *btf, |
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const struct bpf_prog_linfo *prog_linfo, |
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__u64 func_ksym, unsigned int func_idx, |
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bool linum) |
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{ |
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} |
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static inline int disasm_init(void) |
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{ |
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p_err("No libbfd support"); |
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return -1; |
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} |
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#endif |
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void print_data_json(uint8_t *data, size_t len); |
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void print_hex_data_json(uint8_t *data, size_t len); |
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unsigned int get_page_size(void); |
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unsigned int get_possible_cpus(void); |
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const char * |
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ifindex_to_bfd_params(__u32 ifindex, __u64 ns_dev, __u64 ns_ino, |
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const char **opt); |
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struct btf_dumper { |
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const struct btf *btf; |
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json_writer_t *jw; |
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bool is_plain_text; |
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bool prog_id_as_func_ptr; |
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}; |
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/* btf_dumper_type - print data along with type information |
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* @d: an instance containing context for dumping types |
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* @type_id: index in btf->types array. this points to the type to be dumped |
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* @data: pointer the actual data, i.e. the values to be printed |
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* |
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* Returns zero on success and negative error code otherwise |
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*/ |
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int btf_dumper_type(const struct btf_dumper *d, __u32 type_id, |
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const void *data); |
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void btf_dumper_type_only(const struct btf *btf, __u32 func_type_id, |
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char *func_only, int size); |
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void btf_dump_linfo_plain(const struct btf *btf, |
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const struct bpf_line_info *linfo, |
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const char *prefix, bool linum); |
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void btf_dump_linfo_json(const struct btf *btf, |
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const struct bpf_line_info *linfo, bool linum); |
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struct nlattr; |
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struct ifinfomsg; |
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struct tcmsg; |
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int do_xdp_dump(struct ifinfomsg *ifinfo, struct nlattr **tb); |
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int do_filter_dump(struct tcmsg *ifinfo, struct nlattr **tb, const char *kind, |
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const char *devname, int ifindex); |
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int print_all_levels(__maybe_unused enum libbpf_print_level level, |
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const char *format, va_list args); |
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#endif
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