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  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. The name of the author may not be used to endorse or promote products
  14  *    derived from this software without specific prior written permission.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  26  */
  27
  28 #ifndef STRACE_BPF_ATTR_H
  29 #define STRACE_BPF_ATTR_H
  30
  31 /*
  32  * The policy is that all fields of type uint64_t in this header file
  33  * must have ATTRIBUTE_ALIGNED(8).
  34  *
  35  * This should not cause any contradictions with <linux/bpf.h>
  36  * unless the latter is buggy.
  37  *
  38  * By word "buggy" I mean containing such changes as Linux kernel commit
  39  * v4.16-rc1~123^2~109^2~5^2~4.
  40  */
  41
  42 #ifndef BPF_OBJ_NAME_LEN
  43 # define BPF_OBJ_NAME_LEN 16U
  44 #else
  45 # if BPF_OBJ_NAME_LEN != 16U
  46 #  error "Unexpected value of BPF_OBJ_NAME_LEN"
  47 # endif
  48 #endif
  49
  50 #ifndef BPF_TAG_SIZE
  51 # define BPF_TAG_SIZE 8
  52 #else
  53 # if BPF_TAG_SIZE != 8
  54 #  error "Unexpected value of BPF_TAG_SIZE"
  55 # endif
  56 #endif
  57
  58 struct BPF_MAP_CREATE_struct {
  59         uint32_t map_type;
  60         uint32_t key_size;
  61         uint32_t value_size;
  62         uint32_t max_entries;
  63         uint32_t map_flags;
  64         uint32_t inner_map_fd;
  65         uint32_t numa_node;
  66         char     map_name[BPF_OBJ_NAME_LEN];
  67         uint32_t map_ifindex;
  68 };
  69
  70 #define BPF_MAP_CREATE_struct_size \
  71         sizeof(struct BPF_MAP_CREATE_struct)
  72 #define expected_BPF_MAP_CREATE_struct_size 48
  73
  74 struct BPF_MAP_LOOKUP_ELEM_struct {
  75         uint32_t map_fd;
  76         uint64_t ATTRIBUTE_ALIGNED(8) key;
  77         uint64_t ATTRIBUTE_ALIGNED(8) value;
  78 };
  79
  80 #define BPF_MAP_LOOKUP_ELEM_struct_size \
  81         sizeof(struct BPF_MAP_LOOKUP_ELEM_struct)
  82 #define expected_BPF_MAP_LOOKUP_ELEM_struct_size 24
  83
  84 struct BPF_MAP_UPDATE_ELEM_struct {
  85         uint32_t map_fd;
  86         uint64_t ATTRIBUTE_ALIGNED(8) key;
  87         uint64_t ATTRIBUTE_ALIGNED(8) value;
  88         uint64_t ATTRIBUTE_ALIGNED(8) flags;
  89 };
  90
  91 #define BPF_MAP_UPDATE_ELEM_struct_size \
  92         sizeof(struct BPF_MAP_UPDATE_ELEM_struct)
  93 #define expected_BPF_MAP_UPDATE_ELEM_struct_size 32
  94
  95 struct BPF_MAP_DELETE_ELEM_struct {
  96         uint32_t map_fd;
  97         uint64_t ATTRIBUTE_ALIGNED(8) key;
  98 };
  99
 100 #define BPF_MAP_DELETE_ELEM_struct_size \
 101         sizeof(struct BPF_MAP_DELETE_ELEM_struct)
 102 #define expected_BPF_MAP_DELETE_ELEM_struct_size 16
 103
 104 struct BPF_MAP_GET_NEXT_KEY_struct {
 105         uint32_t map_fd;
 106         uint64_t ATTRIBUTE_ALIGNED(8) key;
 107         uint64_t ATTRIBUTE_ALIGNED(8) next_key;
 108 };
 109
 110 #define BPF_MAP_GET_NEXT_KEY_struct_size \
 111         sizeof(struct BPF_MAP_GET_NEXT_KEY_struct)
 112 #define expected_BPF_MAP_GET_NEXT_KEY_struct_size 24
 113
 114 struct BPF_PROG_LOAD_struct {
 115         uint32_t prog_type;
 116         uint32_t insn_cnt;
 117         uint64_t ATTRIBUTE_ALIGNED(8) insns;
 118         uint64_t ATTRIBUTE_ALIGNED(8) license;
 119         uint32_t log_level;
 120         uint32_t log_size;
 121         uint64_t ATTRIBUTE_ALIGNED(8) log_buf;
 122         uint32_t kern_version;
 123         uint32_t prog_flags;
 124         char     prog_name[BPF_OBJ_NAME_LEN];
 125         uint32_t prog_ifindex;
 126         uint32_t expected_attach_type;
 127 };
 128
 129 #define BPF_PROG_LOAD_struct_size \
 130         offsetofend(struct BPF_PROG_LOAD_struct, expected_attach_type)
 131 #define expected_BPF_PROG_LOAD_struct_size 72
 132
 133 struct BPF_OBJ_PIN_struct {
 134         uint64_t ATTRIBUTE_ALIGNED(8) pathname;
 135         uint32_t bpf_fd;
 136         uint32_t file_flags;
 137 };
 138
 139 #define BPF_OBJ_PIN_struct_size \
 140         sizeof(struct BPF_OBJ_PIN_struct)
 141 #define expected_BPF_OBJ_PIN_struct_size 16
 142
 143 #define BPF_OBJ_GET_struct BPF_OBJ_PIN_struct
 144 #define BPF_OBJ_GET_struct_size BPF_OBJ_PIN_struct_size
 145
 146 struct BPF_PROG_ATTACH_struct {
 147         uint32_t target_fd;
 148         uint32_t attach_bpf_fd;
 149         uint32_t attach_type;
 150         uint32_t attach_flags;
 151 };
 152
 153 #define BPF_PROG_ATTACH_struct_size \
 154         sizeof(struct BPF_PROG_ATTACH_struct)
 155 #define expected_BPF_PROG_ATTACH_struct_size 16
 156
 157 struct BPF_PROG_DETACH_struct {
 158         uint32_t target_fd;
 159         uint32_t dummy;
 160         uint32_t attach_type;
 161 };
 162
 163 #define BPF_PROG_DETACH_struct_size \
 164         sizeof(struct BPF_PROG_DETACH_struct)
 165 #define expected_BPF_PROG_DETACH_struct_size 12
 166
 167 struct BPF_PROG_TEST_RUN_struct /* test */ {
 168         uint32_t prog_fd;
 169         uint32_t retval;
 170         uint32_t data_size_in;
 171         uint32_t data_size_out;
 172         uint64_t ATTRIBUTE_ALIGNED(8) data_in;
 173         uint64_t ATTRIBUTE_ALIGNED(8) data_out;
 174         uint32_t repeat;
 175         uint32_t duration;
 176 };
 177
 178 #define BPF_PROG_TEST_RUN_struct_size \
 179         sizeof(struct BPF_PROG_TEST_RUN_struct)
 180 #define expected_BPF_PROG_TEST_RUN_struct_size 40
 181
 182 struct BPF_PROG_GET_NEXT_ID_struct {
 183         uint32_t start_id;
 184         uint32_t next_id;
 185         uint32_t open_flags;
 186 };
 187
 188 #define BPF_PROG_GET_NEXT_ID_struct_size \
 189         sizeof(struct BPF_PROG_GET_NEXT_ID_struct)
 190 #define expected_BPF_PROG_GET_NEXT_ID_struct_size 12
 191
 192 #define BPF_MAP_GET_NEXT_ID_struct BPF_PROG_GET_NEXT_ID_struct
 193 #define BPF_MAP_GET_NEXT_ID_struct_size BPF_PROG_GET_NEXT_ID_struct_size
 194
 195 struct BPF_PROG_GET_FD_BY_ID_struct {
 196         uint32_t prog_id;
 197         uint32_t next_id;
 198         uint32_t open_flags;
 199 };
 200
 201 #define BPF_PROG_GET_FD_BY_ID_struct_size \
 202         sizeof(struct BPF_PROG_GET_FD_BY_ID_struct)
 203 #define expected_BPF_PROG_GET_FD_BY_ID_struct_size 12
 204
 205 struct BPF_MAP_GET_FD_BY_ID_struct {
 206         uint32_t map_id;
 207         uint32_t next_id;
 208         uint32_t open_flags;
 209 };
 210
 211 #define BPF_MAP_GET_FD_BY_ID_struct_size \
 212         sizeof(struct BPF_MAP_GET_FD_BY_ID_struct)
 213 #define expected_BPF_MAP_GET_FD_BY_ID_struct_size 12
 214
 215 struct BPF_OBJ_GET_INFO_BY_FD_struct /* info */ {
 216         uint32_t bpf_fd;
 217         uint32_t info_len;
 218         uint64_t ATTRIBUTE_ALIGNED(8) info;
 219 };
 220
 221 #define BPF_OBJ_GET_INFO_BY_FD_struct_size \
 222         sizeof(struct BPF_OBJ_GET_INFO_BY_FD_struct)
 223 #define expected_BPF_OBJ_GET_INFO_BY_FD_struct_size 16
 224
 225 struct BPF_PROG_QUERY_struct /* query */ {
 226         uint32_t target_fd;
 227         uint32_t attach_type;
 228         uint32_t query_flags;
 229         uint32_t attach_flags;
 230         uint64_t ATTRIBUTE_ALIGNED(8) prog_ids;
 231         uint32_t prog_cnt;
 232 };
 233
 234 #define BPF_PROG_QUERY_struct_size \
 235         offsetofend(struct BPF_PROG_QUERY_struct, prog_cnt)
 236 #define expected_BPF_PROG_QUERY_struct_size 28
 237
 238 struct BPF_RAW_TRACEPOINT_OPEN_struct /* raw_tracepoint */ {
 239         uint64_t ATTRIBUTE_ALIGNED(8) name;
 240         uint32_t prog_fd;
 241 };
 242
 243 #define BPF_RAW_TRACEPOINT_OPEN_struct_size \
 244         offsetofend(struct BPF_RAW_TRACEPOINT_OPEN_struct, prog_fd)
 245 #define expected_BPF_RAW_TRACEPOINT_OPEN_struct_size 12
 246
 247 struct bpf_map_info_struct {
 248         uint32_t type;
 249         uint32_t id;
 250         uint32_t key_size;
 251         uint32_t value_size;
 252         uint32_t max_entries;
 253         uint32_t map_flags;
 254         char     name[BPF_OBJ_NAME_LEN];
 255         uint32_t ifindex;
 256         /*
 257          * The kernel UAPI is broken by Linux commit
 258          * v4.16-rc1~123^2~109^2~5^2~4 .
 259          */
 260         uint64_t ATTRIBUTE_ALIGNED(8) netns_dev; /* skip check */
 261         uint64_t ATTRIBUTE_ALIGNED(8) netns_ino; /* skip check */
 262 };
 263
 264 #define bpf_map_info_struct_size \
 265         sizeof(struct bpf_map_info_struct)
 266 #define expected_bpf_map_info_struct_size 64
 267
 268 struct bpf_prog_info_struct {
 269         uint32_t type;
 270         uint32_t id;
 271         uint8_t  tag[BPF_TAG_SIZE];
 272         uint32_t jited_prog_len;
 273         uint32_t xlated_prog_len;
 274         uint64_t ATTRIBUTE_ALIGNED(8) jited_prog_insns;
 275         uint64_t ATTRIBUTE_ALIGNED(8) xlated_prog_insns;
 276         uint64_t ATTRIBUTE_ALIGNED(8) load_time;
 277         uint32_t created_by_uid;
 278         uint32_t nr_map_ids;
 279         uint64_t ATTRIBUTE_ALIGNED(8) map_ids;
 280         char     name[BPF_OBJ_NAME_LEN];
 281         uint32_t ifindex;
 282         /*
 283          * The kernel UAPI is broken by Linux commit
 284          * v4.16-rc1~123^2~227^2~5^2~2 .
 285          */
 286         uint64_t ATTRIBUTE_ALIGNED(8) netns_dev; /* skip check */
 287         uint64_t ATTRIBUTE_ALIGNED(8) netns_ino; /* skip check */
 288 };
 289
 290 #define bpf_prog_info_struct_size \
 291         sizeof(struct bpf_prog_info_struct)
 292 #define expected_bpf_prog_info_struct_size 104
 293
 294 #endif /* !STRACE_BPF_ATTR_H */