granicus.if.org Git - strace/blob - bpf_attr.h

   1 /*
   2  * Copyright (c) 2015-2018 Dmitry V. Levin <ldv@altlinux.org>
   3  * All rights reserved.
   4  *
   5  * SPDX-License-Identifier: LGPL-2.1-or-later
   6  */
   7
   8 #ifndef STRACE_BPF_ATTR_H
   9 # define STRACE_BPF_ATTR_H
  10
  11 /*
  12  * The policy is that all fields of type uint64_t in this header file
  13  * must have ATTRIBUTE_ALIGNED(8).
  14  *
  15  * This should not cause any contradictions with <linux/bpf.h>
  16  * unless the latter is buggy.
  17  *
  18  * By word "buggy" I mean containing such changes as Linux kernel commit
  19  * v4.16-rc1~123^2~109^2~5^2~4.
  20  */
  21
  22 # ifndef BPF_OBJ_NAME_LEN
  23 #  define BPF_OBJ_NAME_LEN 16U
  24 # else
  25 #  if BPF_OBJ_NAME_LEN != 16U
  26 #   error "Unexpected value of BPF_OBJ_NAME_LEN"
  27 #  endif
  28 # endif
  29
  30 # ifndef BPF_TAG_SIZE
  31 #  define BPF_TAG_SIZE 8
  32 # else
  33 #  if BPF_TAG_SIZE != 8
  34 #   error "Unexpected value of BPF_TAG_SIZE"
  35 #  endif
  36 # endif
  37
  38 struct BPF_MAP_CREATE_struct {
  39         uint32_t map_type;
  40         uint32_t key_size;
  41         uint32_t value_size;
  42         uint32_t max_entries;
  43         uint32_t map_flags;
  44         uint32_t inner_map_fd;
  45         uint32_t numa_node;
  46         char     map_name[BPF_OBJ_NAME_LEN];
  47         uint32_t map_ifindex;
  48         uint32_t btf_fd;
  49         uint32_t btf_key_type_id;
  50         uint32_t btf_value_type_id;
  51 };
  52
  53 # define BPF_MAP_CREATE_struct_size \
  54         sizeof(struct BPF_MAP_CREATE_struct)
  55 # define expected_BPF_MAP_CREATE_struct_size 60
  56
  57 struct BPF_MAP_LOOKUP_ELEM_struct {
  58         uint32_t map_fd;
  59         uint64_t ATTRIBUTE_ALIGNED(8) key;
  60         uint64_t ATTRIBUTE_ALIGNED(8) value;
  61 };
  62
  63 # define BPF_MAP_LOOKUP_ELEM_struct_size \
  64         sizeof(struct BPF_MAP_LOOKUP_ELEM_struct)
  65 # define expected_BPF_MAP_LOOKUP_ELEM_struct_size 24
  66
  67 struct BPF_MAP_UPDATE_ELEM_struct {
  68         uint32_t map_fd;
  69         uint64_t ATTRIBUTE_ALIGNED(8) key;
  70         uint64_t ATTRIBUTE_ALIGNED(8) value;
  71         uint64_t ATTRIBUTE_ALIGNED(8) flags;
  72 };
  73
  74 # define BPF_MAP_UPDATE_ELEM_struct_size \
  75         sizeof(struct BPF_MAP_UPDATE_ELEM_struct)
  76 # define expected_BPF_MAP_UPDATE_ELEM_struct_size 32
  77
  78 struct BPF_MAP_DELETE_ELEM_struct {
  79         uint32_t map_fd;
  80         uint64_t ATTRIBUTE_ALIGNED(8) key;
  81 };
  82
  83 # define BPF_MAP_DELETE_ELEM_struct_size \
  84         sizeof(struct BPF_MAP_DELETE_ELEM_struct)
  85 # define expected_BPF_MAP_DELETE_ELEM_struct_size 16
  86
  87 struct BPF_MAP_GET_NEXT_KEY_struct {
  88         uint32_t map_fd;
  89         uint64_t ATTRIBUTE_ALIGNED(8) key;
  90         uint64_t ATTRIBUTE_ALIGNED(8) next_key;
  91 };
  92
  93 # define BPF_MAP_GET_NEXT_KEY_struct_size \
  94         sizeof(struct BPF_MAP_GET_NEXT_KEY_struct)
  95 # define expected_BPF_MAP_GET_NEXT_KEY_struct_size 24
  96
  97 struct BPF_PROG_LOAD_struct {
  98         uint32_t prog_type;
  99         uint32_t insn_cnt;
 100         uint64_t ATTRIBUTE_ALIGNED(8) insns;
 101         uint64_t ATTRIBUTE_ALIGNED(8) license;
 102         uint32_t log_level;
 103         uint32_t log_size;
 104         uint64_t ATTRIBUTE_ALIGNED(8) log_buf;
 105         uint32_t kern_version;
 106         uint32_t prog_flags;
 107         char     prog_name[BPF_OBJ_NAME_LEN];
 108         uint32_t prog_ifindex;
 109         uint32_t expected_attach_type;
 110 };
 111
 112 # define BPF_PROG_LOAD_struct_size \
 113         offsetofend(struct BPF_PROG_LOAD_struct, expected_attach_type)
 114 # define expected_BPF_PROG_LOAD_struct_size 72
 115
 116 struct BPF_OBJ_PIN_struct {
 117         uint64_t ATTRIBUTE_ALIGNED(8) pathname;
 118         uint32_t bpf_fd;
 119         uint32_t file_flags;
 120 };
 121
 122 # define BPF_OBJ_PIN_struct_size \
 123         sizeof(struct BPF_OBJ_PIN_struct)
 124 # define expected_BPF_OBJ_PIN_struct_size 16
 125
 126 # define BPF_OBJ_GET_struct BPF_OBJ_PIN_struct
 127 # define BPF_OBJ_GET_struct_size BPF_OBJ_PIN_struct_size
 128
 129 struct BPF_PROG_ATTACH_struct {
 130         uint32_t target_fd;
 131         uint32_t attach_bpf_fd;
 132         uint32_t attach_type;
 133         uint32_t attach_flags;
 134 };
 135
 136 # define BPF_PROG_ATTACH_struct_size \
 137         sizeof(struct BPF_PROG_ATTACH_struct)
 138 # define expected_BPF_PROG_ATTACH_struct_size 16
 139
 140 struct BPF_PROG_DETACH_struct {
 141         uint32_t target_fd;
 142         uint32_t dummy;
 143         uint32_t attach_type;
 144 };
 145
 146 # define BPF_PROG_DETACH_struct_size \
 147         sizeof(struct BPF_PROG_DETACH_struct)
 148 # define expected_BPF_PROG_DETACH_struct_size 12
 149
 150 struct BPF_PROG_TEST_RUN_struct /* test */ {
 151         uint32_t prog_fd;
 152         uint32_t retval;
 153         uint32_t data_size_in;
 154         uint32_t data_size_out;
 155         uint64_t ATTRIBUTE_ALIGNED(8) data_in;
 156         uint64_t ATTRIBUTE_ALIGNED(8) data_out;
 157         uint32_t repeat;
 158         uint32_t duration;
 159 };
 160
 161 # define BPF_PROG_TEST_RUN_struct_size \
 162         sizeof(struct BPF_PROG_TEST_RUN_struct)
 163 # define expected_BPF_PROG_TEST_RUN_struct_size 40
 164
 165 struct BPF_PROG_GET_NEXT_ID_struct {
 166         uint32_t start_id;
 167         uint32_t next_id;
 168         uint32_t open_flags;
 169 };
 170
 171 # define BPF_PROG_GET_NEXT_ID_struct_size \
 172         sizeof(struct BPF_PROG_GET_NEXT_ID_struct)
 173 # define expected_BPF_PROG_GET_NEXT_ID_struct_size 12
 174
 175 # define BPF_MAP_GET_NEXT_ID_struct BPF_PROG_GET_NEXT_ID_struct
 176 # define BPF_MAP_GET_NEXT_ID_struct_size BPF_PROG_GET_NEXT_ID_struct_size
 177
 178 struct BPF_PROG_GET_FD_BY_ID_struct {
 179         uint32_t prog_id;
 180         uint32_t next_id;
 181         uint32_t open_flags;
 182 };
 183
 184 # define BPF_PROG_GET_FD_BY_ID_struct_size \
 185         sizeof(struct BPF_PROG_GET_FD_BY_ID_struct)
 186 # define expected_BPF_PROG_GET_FD_BY_ID_struct_size 12
 187
 188 struct BPF_MAP_GET_FD_BY_ID_struct {
 189         uint32_t map_id;
 190         uint32_t next_id;
 191         uint32_t open_flags;
 192 };
 193
 194 # define BPF_MAP_GET_FD_BY_ID_struct_size \
 195         sizeof(struct BPF_MAP_GET_FD_BY_ID_struct)
 196 # define expected_BPF_MAP_GET_FD_BY_ID_struct_size 12
 197
 198 struct BPF_OBJ_GET_INFO_BY_FD_struct /* info */ {
 199         uint32_t bpf_fd;
 200         uint32_t info_len;
 201         uint64_t ATTRIBUTE_ALIGNED(8) info;
 202 };
 203
 204 # define BPF_OBJ_GET_INFO_BY_FD_struct_size \
 205         sizeof(struct BPF_OBJ_GET_INFO_BY_FD_struct)
 206 # define expected_BPF_OBJ_GET_INFO_BY_FD_struct_size 16
 207
 208 struct BPF_PROG_QUERY_struct /* query */ {
 209         uint32_t target_fd;
 210         uint32_t attach_type;
 211         uint32_t query_flags;
 212         uint32_t attach_flags;
 213         uint64_t ATTRIBUTE_ALIGNED(8) prog_ids;
 214         uint32_t prog_cnt;
 215 };
 216
 217 # define BPF_PROG_QUERY_struct_size \
 218         offsetofend(struct BPF_PROG_QUERY_struct, prog_cnt)
 219 # define expected_BPF_PROG_QUERY_struct_size 28
 220
 221 struct BPF_RAW_TRACEPOINT_OPEN_struct /* raw_tracepoint */ {
 222         uint64_t ATTRIBUTE_ALIGNED(8) name;
 223         uint32_t prog_fd;
 224 };
 225
 226 # define BPF_RAW_TRACEPOINT_OPEN_struct_size \
 227         offsetofend(struct BPF_RAW_TRACEPOINT_OPEN_struct, prog_fd)
 228 # define expected_BPF_RAW_TRACEPOINT_OPEN_struct_size 12
 229
 230 struct BPF_BTF_LOAD_struct {
 231         uint64_t ATTRIBUTE_ALIGNED(8) btf;
 232         uint64_t ATTRIBUTE_ALIGNED(8) btf_log_buf;
 233         uint32_t btf_size;
 234         uint32_t btf_log_size;
 235         uint32_t btf_log_level;
 236 };
 237
 238 # define BPF_BTF_LOAD_struct_size \
 239         offsetofend(struct BPF_BTF_LOAD_struct, btf_log_level)
 240 # define expected_BPF_BTF_LOAD_struct_size 28
 241
 242 struct bpf_map_info_struct {
 243         uint32_t type;
 244         uint32_t id;
 245         uint32_t key_size;
 246         uint32_t value_size;
 247         uint32_t max_entries;
 248         uint32_t map_flags;
 249         char     name[BPF_OBJ_NAME_LEN];
 250         uint32_t ifindex;
 251         /*
 252          * The kernel UAPI is broken by Linux commit
 253          * v4.16-rc1~123^2~109^2~5^2~4 .
 254          */
 255         uint64_t ATTRIBUTE_ALIGNED(8) netns_dev; /* skip check */
 256         uint64_t ATTRIBUTE_ALIGNED(8) netns_ino; /* skip check */
 257         uint32_t btf_id;
 258         uint32_t btf_key_type_id;
 259         uint32_t btf_value_type_id;
 260 };
 261
 262 # define bpf_map_info_struct_size \
 263         offsetofend(struct bpf_map_info_struct, btf_value_type_id)
 264 # define expected_bpf_map_info_struct_size 76
 265
 266 struct bpf_prog_info_struct {
 267         uint32_t type;
 268         uint32_t id;
 269         uint8_t  tag[BPF_TAG_SIZE];
 270         uint32_t jited_prog_len;
 271         uint32_t xlated_prog_len;
 272         uint64_t ATTRIBUTE_ALIGNED(8) jited_prog_insns;
 273         uint64_t ATTRIBUTE_ALIGNED(8) xlated_prog_insns;
 274         uint64_t ATTRIBUTE_ALIGNED(8) load_time;
 275         uint32_t created_by_uid;
 276         uint32_t nr_map_ids;
 277         uint64_t ATTRIBUTE_ALIGNED(8) map_ids;
 278         char     name[BPF_OBJ_NAME_LEN];
 279         uint32_t ifindex;
 280         uint32_t gpl_compatible:1;
 281         /*
 282          * The kernel UAPI is broken by Linux commit
 283          * v4.16-rc1~123^2~227^2~5^2~2 .
 284          */
 285         uint64_t ATTRIBUTE_ALIGNED(8) netns_dev; /* skip check */
 286         uint64_t ATTRIBUTE_ALIGNED(8) netns_ino; /* skip check */
 287         uint32_t nr_jited_ksyms;
 288         uint32_t nr_jited_func_lens;
 289         uint64_t ATTRIBUTE_ALIGNED(8) jited_ksyms;
 290         uint64_t ATTRIBUTE_ALIGNED(8) jited_func_lens;
 291         uint32_t btf_id;
 292         uint32_t func_info_rec_size;
 293         uint64_t ATTRIBUTE_ALIGNED(8) func_info;
 294         uint32_t nr_func_info;
 295         uint32_t nr_line_info;
 296         uint64_t ATTRIBUTE_ALIGNED(8) line_info;
 297         uint64_t ATTRIBUTE_ALIGNED(8) jited_line_info;
 298         uint32_t nr_jited_line_info;
 299         uint32_t line_info_rec_size;
 300         uint32_t jited_line_info_rec_size;
 301         uint32_t nr_prog_tags;
 302         uint64_t ATTRIBUTE_ALIGNED(8) prog_tags;
 303 };
 304
 305 # define bpf_prog_info_struct_size \
 306         sizeof(struct bpf_prog_info_struct)
 307 # define expected_bpf_prog_info_struct_size 192
 308
 309 #endif /* !STRACE_BPF_ATTR_H */