1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
2 /* Copyright (C) 2017-2018 Netronome Systems, Inc. */
7 /* BFD and kernel.h both define GCC_VERSION, differently */
11 #include <linux/bpf.h>
12 #include <linux/compiler.h>
13 #include <linux/kernel.h>
14 #include <linux/hashtable.h>
15 #include <tools/libc_compat.h>
17 #include "json_writer.h"
19 #define ptr_to_u64(ptr) ((__u64)(unsigned long)(ptr))
21 #define NEXT_ARG() ({ argc--; argv++; if (argc < 0) usage(); })
22 #define NEXT_ARGP() ({ (*argc)--; (*argv)++; if (*argc < 0) usage(); })
23 #define BAD_ARG() ({ p_err("what is '%s'?", *argv); -1; })
24 #define GET_ARG() ({ argc--; *argv++; })
25 #define REQ_ARGS(cnt) \
31 p_err("'%s' needs at least %d arguments, %d found", \
32 argv[-1], _cnt, argc); \
40 #define ERR_MAX_LEN 1024
42 #define BPF_TAG_FMT "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx"
44 #define HELP_SPEC_PROGRAM \
45 "PROG := { id PROG_ID | pinned FILE | tag PROG_TAG }"
46 #define HELP_SPEC_OPTIONS \
47 "OPTIONS := { {-j|--json} [{-p|--pretty}] | {-f|--bpffs} |\n" \
48 "\t {-m|--mapcompat} | {-n|--nomount} }"
49 #define HELP_SPEC_MAP \
50 "MAP := { id MAP_ID | pinned FILE }"
52 static const char * const prog_type_name[] = {
53 [BPF_PROG_TYPE_UNSPEC] = "unspec",
54 [BPF_PROG_TYPE_SOCKET_FILTER] = "socket_filter",
55 [BPF_PROG_TYPE_KPROBE] = "kprobe",
56 [BPF_PROG_TYPE_SCHED_CLS] = "sched_cls",
57 [BPF_PROG_TYPE_SCHED_ACT] = "sched_act",
58 [BPF_PROG_TYPE_TRACEPOINT] = "tracepoint",
59 [BPF_PROG_TYPE_XDP] = "xdp",
60 [BPF_PROG_TYPE_PERF_EVENT] = "perf_event",
61 [BPF_PROG_TYPE_CGROUP_SKB] = "cgroup_skb",
62 [BPF_PROG_TYPE_CGROUP_SOCK] = "cgroup_sock",
63 [BPF_PROG_TYPE_LWT_IN] = "lwt_in",
64 [BPF_PROG_TYPE_LWT_OUT] = "lwt_out",
65 [BPF_PROG_TYPE_LWT_XMIT] = "lwt_xmit",
66 [BPF_PROG_TYPE_SOCK_OPS] = "sock_ops",
67 [BPF_PROG_TYPE_SK_SKB] = "sk_skb",
68 [BPF_PROG_TYPE_CGROUP_DEVICE] = "cgroup_device",
69 [BPF_PROG_TYPE_SK_MSG] = "sk_msg",
70 [BPF_PROG_TYPE_RAW_TRACEPOINT] = "raw_tracepoint",
71 [BPF_PROG_TYPE_CGROUP_SOCK_ADDR] = "cgroup_sock_addr",
72 [BPF_PROG_TYPE_LWT_SEG6LOCAL] = "lwt_seg6local",
73 [BPF_PROG_TYPE_LIRC_MODE2] = "lirc_mode2",
74 [BPF_PROG_TYPE_SK_REUSEPORT] = "sk_reuseport",
75 [BPF_PROG_TYPE_FLOW_DISSECTOR] = "flow_dissector",
84 extern const char *bin_name;
86 extern json_writer_t *json_wtr;
87 extern bool json_output;
88 extern bool show_pinned;
89 extern bool block_mount;
91 extern struct pinned_obj_table prog_table;
92 extern struct pinned_obj_table map_table;
94 void p_err(const char *fmt, ...);
95 void p_info(const char *fmt, ...);
97 bool is_prefix(const char *pfx, const char *str);
98 void fprint_hex(FILE *f, void *arg, unsigned int n, const char *sep);
99 void usage(void) __noreturn;
101 void set_max_rlimit(void);
103 int mount_tracefs(const char *target);
105 struct pinned_obj_table {
106 DECLARE_HASHTABLE(table, 16);
112 struct hlist_node hash;
116 struct bpf_line_info;
118 int build_pinned_obj_table(struct pinned_obj_table *table,
119 enum bpf_obj_type type);
120 void delete_pinned_obj_table(struct pinned_obj_table *tab);
121 void print_dev_plain(__u32 ifindex, __u64 ns_dev, __u64 ns_inode);
122 void print_dev_json(__u32 ifindex, __u64 ns_dev, __u64 ns_inode);
126 int (*func)(int argc, char **argv);
129 int cmd_select(const struct cmd *cmds, int argc, char **argv,
130 int (*help)(int argc, char **argv));
132 int get_fd_type(int fd);
133 const char *get_fd_type_name(enum bpf_obj_type type);
134 char *get_fdinfo(int fd, const char *key);
135 int open_obj_pinned(char *path, bool quiet);
136 int open_obj_pinned_any(char *path, enum bpf_obj_type exp_type);
137 int mount_bpffs_for_pin(const char *name);
138 int do_pin_any(int argc, char **argv, int (*get_fd_by_id)(__u32));
139 int do_pin_fd(int fd, const char *name);
141 int do_prog(int argc, char **arg);
142 int do_map(int argc, char **arg);
143 int do_event_pipe(int argc, char **argv);
144 int do_cgroup(int argc, char **arg);
145 int do_perf(int argc, char **arg);
146 int do_net(int argc, char **arg);
147 int do_tracelog(int argc, char **arg);
149 int parse_u32_arg(int *argc, char ***argv, __u32 *val, const char *what);
150 int prog_parse_fd(int *argc, char ***argv);
151 int map_parse_fd(int *argc, char ***argv);
152 int map_parse_fd_and_info(int *argc, char ***argv, void *info, __u32 *info_len);
154 struct bpf_prog_linfo;
155 #ifdef HAVE_LIBBFD_SUPPORT
156 void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes,
157 const char *arch, const char *disassembler_options,
158 const struct btf *btf,
159 const struct bpf_prog_linfo *prog_linfo,
160 __u64 func_ksym, unsigned int func_idx,
162 int disasm_init(void);
165 void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes,
166 const char *arch, const char *disassembler_options,
167 const struct btf *btf,
168 const struct bpf_prog_linfo *prog_linfo,
169 __u64 func_ksym, unsigned int func_idx,
173 static inline int disasm_init(void)
175 p_err("No libbfd support");
179 void print_data_json(uint8_t *data, size_t len);
180 void print_hex_data_json(uint8_t *data, size_t len);
182 unsigned int get_page_size(void);
183 unsigned int get_possible_cpus(void);
185 ifindex_to_bfd_params(__u32 ifindex, __u64 ns_dev, __u64 ns_ino,
189 const struct btf *btf;
194 /* btf_dumper_type - print data along with type information
195 * @d: an instance containing context for dumping types
196 * @type_id: index in btf->types array. this points to the type to be dumped
197 * @data: pointer the actual data, i.e. the values to be printed
199 * Returns zero on success and negative error code otherwise
201 int btf_dumper_type(const struct btf_dumper *d, __u32 type_id,
203 void btf_dumper_type_only(const struct btf *btf, __u32 func_type_id,
204 char *func_only, int size);
206 void btf_dump_linfo_plain(const struct btf *btf,
207 const struct bpf_line_info *linfo,
208 const char *prefix, bool linum);
209 void btf_dump_linfo_json(const struct btf *btf,
210 const struct bpf_line_info *linfo, bool linum);
215 int do_xdp_dump(struct ifinfomsg *ifinfo, struct nlattr **tb);
216 int do_filter_dump(struct tcmsg *ifinfo, struct nlattr **tb, const char *kind,
217 const char *devname, int ifindex);