225 lines
6.8 KiB
C
225 lines
6.8 KiB
C
/* 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 "json_writer.h"
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#define ptr_to_u64(ptr) ((__u64)(unsigned long)(ptr))
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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 }"
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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 }"
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static const char * const prog_type_name[] = {
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[BPF_PROG_TYPE_UNSPEC] = "unspec",
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[BPF_PROG_TYPE_SOCKET_FILTER] = "socket_filter",
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[BPF_PROG_TYPE_KPROBE] = "kprobe",
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[BPF_PROG_TYPE_SCHED_CLS] = "sched_cls",
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[BPF_PROG_TYPE_SCHED_ACT] = "sched_act",
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[BPF_PROG_TYPE_TRACEPOINT] = "tracepoint",
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[BPF_PROG_TYPE_XDP] = "xdp",
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[BPF_PROG_TYPE_PERF_EVENT] = "perf_event",
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[BPF_PROG_TYPE_CGROUP_SKB] = "cgroup_skb",
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[BPF_PROG_TYPE_CGROUP_SOCK] = "cgroup_sock",
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[BPF_PROG_TYPE_LWT_IN] = "lwt_in",
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[BPF_PROG_TYPE_LWT_OUT] = "lwt_out",
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[BPF_PROG_TYPE_LWT_XMIT] = "lwt_xmit",
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[BPF_PROG_TYPE_SOCK_OPS] = "sock_ops",
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[BPF_PROG_TYPE_SK_SKB] = "sk_skb",
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[BPF_PROG_TYPE_CGROUP_DEVICE] = "cgroup_device",
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[BPF_PROG_TYPE_SK_MSG] = "sk_msg",
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[BPF_PROG_TYPE_RAW_TRACEPOINT] = "raw_tracepoint",
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[BPF_PROG_TYPE_CGROUP_SOCK_ADDR] = "cgroup_sock_addr",
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[BPF_PROG_TYPE_LWT_SEG6LOCAL] = "lwt_seg6local",
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[BPF_PROG_TYPE_LIRC_MODE2] = "lirc_mode2",
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[BPF_PROG_TYPE_SK_REUSEPORT] = "sk_reuseport",
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[BPF_PROG_TYPE_FLOW_DISSECTOR] = "flow_dissector",
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[BPF_PROG_TYPE_CGROUP_SYSCTL] = "cgroup_sysctl",
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};
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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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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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};
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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 block_mount;
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extern int bpf_flags;
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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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void p_err(const char *fmt, ...);
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void p_info(const char *fmt, ...);
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bool is_prefix(const char *pfx, const char *str);
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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 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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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(char *path, bool quiet);
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int open_obj_pinned_any(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)(__u32));
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int do_pin_fd(int fd, const char *name);
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int do_prog(int argc, char **arg);
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int do_map(int argc, char **arg);
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int do_event_pipe(int argc, char **argv);
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int do_cgroup(int argc, char **arg);
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int do_perf(int argc, char **arg);
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int do_net(int argc, char **arg);
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int do_tracelog(int argc, char **arg);
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int do_feature(int argc, char **argv);
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int do_btf(int argc, char **argv);
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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 map_parse_fd(int *argc, char ***argv);
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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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};
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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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#endif
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