1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 3 #ifndef _LINUX_DROPREASON_CORE_H 4 #define _LINUX_DROPREASON_CORE_H 5 6 #define DEFINE_DROP_REASON(FN, FNe) \ 7 FN(NOT_SPECIFIED) \ 8 FN(NO_SOCKET) \ 9 FN(SOCKET_CLOSE) \ 10 FN(SOCKET_FILTER) \ 11 FN(SOCKET_RCVBUFF) \ 12 FN(UNIX_DISCONNECT) \ 13 FN(UNIX_SKIP_OOB) \ 14 FN(PKT_TOO_SMALL) \ 15 FN(TCP_CSUM) \ 16 FN(UDP_CSUM) \ 17 FN(NETFILTER_DROP) \ 18 FN(OTHERHOST) \ 19 FN(IP_CSUM) \ 20 FN(IP_INHDR) \ 21 FN(IP_RPFILTER) \ 22 FN(UNICAST_IN_L2_MULTICAST) \ 23 FN(XFRM_POLICY) \ 24 FN(IP_NOPROTO) \ 25 FN(PROTO_MEM) \ 26 FN(TCP_AUTH_HDR) \ 27 FN(TCP_MD5NOTFOUND) \ 28 FN(TCP_MD5UNEXPECTED) \ 29 FN(TCP_MD5FAILURE) \ 30 FN(TCP_AONOTFOUND) \ 31 FN(TCP_AOUNEXPECTED) \ 32 FN(TCP_AOKEYNOTFOUND) \ 33 FN(TCP_AOFAILURE) \ 34 FN(SOCKET_BACKLOG) \ 35 FN(TCP_FLAGS) \ 36 FN(TCP_ABORT_ON_DATA) \ 37 FN(TCP_ZEROWINDOW) \ 38 FN(TCP_OLD_DATA) \ 39 FN(TCP_OVERWINDOW) \ 40 FN(TCP_OFOMERGE) \ 41 FN(TCP_RFC7323_PAWS) \ 42 FN(TCP_RFC7323_PAWS_ACK) \ 43 FN(TCP_RFC7323_TW_PAWS) \ 44 FN(TCP_RFC7323_TSECR) \ 45 FN(TCP_LISTEN_OVERFLOW) \ 46 FN(TCP_OLD_SEQUENCE) \ 47 FN(TCP_INVALID_SEQUENCE) \ 48 FN(TCP_INVALID_END_SEQUENCE) \ 49 FN(TCP_INVALID_ACK_SEQUENCE) \ 50 FN(TCP_RESET) \ 51 FN(TCP_INVALID_SYN) \ 52 FN(TCP_CLOSE) \ 53 FN(TCP_FASTOPEN) \ 54 FN(TCP_OLD_ACK) \ 55 FN(TCP_TOO_OLD_ACK) \ 56 FN(TCP_ACK_UNSENT_DATA) \ 57 FN(TCP_OFO_QUEUE_PRUNE) \ 58 FN(TCP_OFO_DROP) \ 59 FN(IP_OUTNOROUTES) \ 60 FN(BPF_CGROUP_EGRESS) \ 61 FN(IPV6DISABLED) \ 62 FN(NEIGH_CREATEFAIL) \ 63 FN(NEIGH_FAILED) \ 64 FN(NEIGH_QUEUEFULL) \ 65 FN(NEIGH_DEAD) \ 66 FN(NEIGH_HH_FILLFAIL) \ 67 FN(TC_EGRESS) \ 68 FN(SECURITY_HOOK) \ 69 FN(QDISC_DROP) \ 70 FN(QDISC_BURST_DROP) \ 71 FN(CPU_BACKLOG) \ 72 FN(XDP) \ 73 FN(TC_INGRESS) \ 74 FN(UNHANDLED_PROTO) \ 75 FN(SKB_CSUM) \ 76 FN(SKB_GSO_SEG) \ 77 FN(SKB_UCOPY_FAULT) \ 78 FN(DEV_HDR) \ 79 FN(DEV_READY) \ 80 FN(FULL_RING) \ 81 FN(NOMEM) \ 82 FN(HDR_TRUNC) \ 83 FN(TAP_FILTER) \ 84 FN(TAP_TXFILTER) \ 85 FN(ICMP_CSUM) \ 86 FN(INVALID_PROTO) \ 87 FN(IP_INADDRERRORS) \ 88 FN(IP_INNOROUTES) \ 89 FN(IP_LOCAL_SOURCE) \ 90 FN(IP_INVALID_SOURCE) \ 91 FN(IP_LOCALNET) \ 92 FN(IP_INVALID_DEST) \ 93 FN(PKT_TOO_BIG) \ 94 FN(DUP_FRAG) \ 95 FN(FRAG_REASM_TIMEOUT) \ 96 FN(FRAG_TOO_FAR) \ 97 FN(TCP_MINTTL) \ 98 FN(IPV6_BAD_EXTHDR) \ 99 FN(IPV6_NDISC_FRAG) \ 100 FN(IPV6_NDISC_HOP_LIMIT) \ 101 FN(IPV6_NDISC_BAD_CODE) \ 102 FN(IPV6_NDISC_BAD_OPTIONS) \ 103 FN(IPV6_NDISC_NS_OTHERHOST) \ 104 FN(QUEUE_PURGE) \ 105 FN(TC_COOKIE_ERROR) \ 106 FN(PACKET_SOCK_ERROR) \ 107 FN(TC_CHAIN_NOTFOUND) \ 108 FN(TC_RECLASSIFY_LOOP) \ 109 FN(VXLAN_INVALID_HDR) \ 110 FN(VXLAN_VNI_NOT_FOUND) \ 111 FN(MAC_INVALID_SOURCE) \ 112 FN(VXLAN_ENTRY_EXISTS) \ 113 FN(NO_TX_TARGET) \ 114 FN(IP_TUNNEL_ECN) \ 115 FN(TUNNEL_TXINFO) \ 116 FN(LOCAL_MAC) \ 117 FN(ARP_PVLAN_DISABLE) \ 118 FN(MAC_IEEE_MAC_CONTROL) \ 119 FN(BRIDGE_INGRESS_STP_STATE) \ 120 FN(CAN_RX_INVALID_FRAME) \ 121 FN(CANFD_RX_INVALID_FRAME) \ 122 FN(CANXL_RX_INVALID_FRAME) \ 123 FN(PFMEMALLOC) \ 124 FN(PSP_INPUT) \ 125 FN(PSP_OUTPUT) \ 126 FNe(MAX) 127 128 /** 129 * enum skb_drop_reason - the reasons of skb drops 130 * 131 * The reason of skb drop, which is used in kfree_skb_reason(). 132 */ 133 enum skb_drop_reason { 134 /** 135 * @SKB_NOT_DROPPED_YET: skb is not dropped yet (used for no-drop case) 136 */ 137 SKB_NOT_DROPPED_YET = 0, 138 /** @SKB_CONSUMED: packet has been consumed */ 139 SKB_CONSUMED, 140 /** @SKB_DROP_REASON_NOT_SPECIFIED: drop reason is not specified */ 141 SKB_DROP_REASON_NOT_SPECIFIED, 142 /** 143 * @SKB_DROP_REASON_NO_SOCKET: no valid socket that can be used. 144 * Reason could be one of three cases: 145 * 1) no established/listening socket found during lookup process 146 * 2) no valid request socket during 3WHS process 147 * 3) no valid child socket during 3WHS process 148 */ 149 SKB_DROP_REASON_NO_SOCKET, 150 /** @SKB_DROP_REASON_SOCKET_CLOSE: socket is close()d */ 151 SKB_DROP_REASON_SOCKET_CLOSE, 152 /** @SKB_DROP_REASON_SOCKET_FILTER: dropped by socket filter */ 153 SKB_DROP_REASON_SOCKET_FILTER, 154 /** @SKB_DROP_REASON_SOCKET_RCVBUFF: socket receive buff is full */ 155 SKB_DROP_REASON_SOCKET_RCVBUFF, 156 /** 157 * @SKB_DROP_REASON_UNIX_DISCONNECT: recv queue is purged when SOCK_DGRAM 158 * or SOCK_SEQPACKET socket re-connect()s to another socket or notices 159 * during send() that the peer has been close()d. 160 */ 161 SKB_DROP_REASON_UNIX_DISCONNECT, 162 /** 163 * @SKB_DROP_REASON_UNIX_SKIP_OOB: Out-Of-Band data is skipped by 164 * recv() without MSG_OOB so dropped. 165 */ 166 SKB_DROP_REASON_UNIX_SKIP_OOB, 167 /** @SKB_DROP_REASON_PKT_TOO_SMALL: packet size is too small */ 168 SKB_DROP_REASON_PKT_TOO_SMALL, 169 /** @SKB_DROP_REASON_TCP_CSUM: TCP checksum error */ 170 SKB_DROP_REASON_TCP_CSUM, 171 /** @SKB_DROP_REASON_UDP_CSUM: UDP checksum error */ 172 SKB_DROP_REASON_UDP_CSUM, 173 /** @SKB_DROP_REASON_NETFILTER_DROP: dropped by netfilter */ 174 SKB_DROP_REASON_NETFILTER_DROP, 175 /** 176 * @SKB_DROP_REASON_OTHERHOST: packet don't belong to current host 177 * (interface is in promisc mode) 178 */ 179 SKB_DROP_REASON_OTHERHOST, 180 /** @SKB_DROP_REASON_IP_CSUM: IP checksum error */ 181 SKB_DROP_REASON_IP_CSUM, 182 /** 183 * @SKB_DROP_REASON_IP_INHDR: there is something wrong with IP header (see 184 * IPSTATS_MIB_INHDRERRORS) 185 */ 186 SKB_DROP_REASON_IP_INHDR, 187 /** 188 * @SKB_DROP_REASON_IP_RPFILTER: IP rpfilter validate failed. see the 189 * document for rp_filter in ip-sysctl.rst for more information 190 */ 191 SKB_DROP_REASON_IP_RPFILTER, 192 /** 193 * @SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST: destination address of L2 is 194 * multicast, but L3 is unicast. 195 */ 196 SKB_DROP_REASON_UNICAST_IN_L2_MULTICAST, 197 /** @SKB_DROP_REASON_XFRM_POLICY: xfrm policy check failed */ 198 SKB_DROP_REASON_XFRM_POLICY, 199 /** @SKB_DROP_REASON_IP_NOPROTO: no support for IP protocol */ 200 SKB_DROP_REASON_IP_NOPROTO, 201 /** 202 * @SKB_DROP_REASON_PROTO_MEM: proto memory limitation, such as 203 * udp packet drop out of udp_memory_allocated. 204 */ 205 SKB_DROP_REASON_PROTO_MEM, 206 /** 207 * @SKB_DROP_REASON_TCP_AUTH_HDR: TCP-MD5 or TCP-AO hashes are met 208 * twice or set incorrectly. 209 */ 210 SKB_DROP_REASON_TCP_AUTH_HDR, 211 /** 212 * @SKB_DROP_REASON_TCP_MD5NOTFOUND: no MD5 hash and one expected, 213 * corresponding to LINUX_MIB_TCPMD5NOTFOUND 214 */ 215 SKB_DROP_REASON_TCP_MD5NOTFOUND, 216 /** 217 * @SKB_DROP_REASON_TCP_MD5UNEXPECTED: MD5 hash and we're not expecting 218 * one, corresponding to LINUX_MIB_TCPMD5UNEXPECTED 219 */ 220 SKB_DROP_REASON_TCP_MD5UNEXPECTED, 221 /** 222 * @SKB_DROP_REASON_TCP_MD5FAILURE: MD5 hash and its wrong, corresponding 223 * to LINUX_MIB_TCPMD5FAILURE 224 */ 225 SKB_DROP_REASON_TCP_MD5FAILURE, 226 /** 227 * @SKB_DROP_REASON_TCP_AONOTFOUND: no TCP-AO hash and one was expected, 228 * corresponding to LINUX_MIB_TCPAOREQUIRED 229 */ 230 SKB_DROP_REASON_TCP_AONOTFOUND, 231 /** 232 * @SKB_DROP_REASON_TCP_AOUNEXPECTED: TCP-AO hash is present and it 233 * was not expected, corresponding to LINUX_MIB_TCPAOKEYNOTFOUND 234 */ 235 SKB_DROP_REASON_TCP_AOUNEXPECTED, 236 /** 237 * @SKB_DROP_REASON_TCP_AOKEYNOTFOUND: TCP-AO key is unknown, 238 * corresponding to LINUX_MIB_TCPAOKEYNOTFOUND 239 */ 240 SKB_DROP_REASON_TCP_AOKEYNOTFOUND, 241 /** 242 * @SKB_DROP_REASON_TCP_AOFAILURE: TCP-AO hash is wrong, 243 * corresponding to LINUX_MIB_TCPAOBAD 244 */ 245 SKB_DROP_REASON_TCP_AOFAILURE, 246 /** 247 * @SKB_DROP_REASON_SOCKET_BACKLOG: failed to add skb to socket backlog ( 248 * see LINUX_MIB_TCPBACKLOGDROP) 249 */ 250 SKB_DROP_REASON_SOCKET_BACKLOG, 251 /** @SKB_DROP_REASON_TCP_FLAGS: TCP flags invalid */ 252 SKB_DROP_REASON_TCP_FLAGS, 253 /** 254 * @SKB_DROP_REASON_TCP_ABORT_ON_DATA: abort on data, corresponding to 255 * LINUX_MIB_TCPABORTONDATA 256 */ 257 SKB_DROP_REASON_TCP_ABORT_ON_DATA, 258 /** 259 * @SKB_DROP_REASON_TCP_ZEROWINDOW: TCP receive window size is zero, 260 * see LINUX_MIB_TCPZEROWINDOWDROP 261 */ 262 SKB_DROP_REASON_TCP_ZEROWINDOW, 263 /** 264 * @SKB_DROP_REASON_TCP_OLD_DATA: the TCP data received is already 265 * received before (spurious retrans may happened), see 266 * LINUX_MIB_DELAYEDACKLOST 267 */ 268 SKB_DROP_REASON_TCP_OLD_DATA, 269 /** 270 * @SKB_DROP_REASON_TCP_OVERWINDOW: the TCP data is out of window, 271 * the seq of the first byte exceed the right edges of receive 272 * window 273 */ 274 SKB_DROP_REASON_TCP_OVERWINDOW, 275 /** 276 * @SKB_DROP_REASON_TCP_OFOMERGE: the data of skb is already in the ofo 277 * queue, corresponding to LINUX_MIB_TCPOFOMERGE 278 */ 279 SKB_DROP_REASON_TCP_OFOMERGE, 280 /** 281 * @SKB_DROP_REASON_TCP_RFC7323_PAWS: PAWS check, corresponding to 282 * LINUX_MIB_PAWSESTABREJECTED, LINUX_MIB_PAWSACTIVEREJECTED 283 */ 284 SKB_DROP_REASON_TCP_RFC7323_PAWS, 285 /** 286 * @SKB_DROP_REASON_TCP_RFC7323_PAWS_ACK: PAWS check, old ACK packet. 287 * Corresponds to LINUX_MIB_PAWS_OLD_ACK. 288 */ 289 SKB_DROP_REASON_TCP_RFC7323_PAWS_ACK, 290 /** 291 * @SKB_DROP_REASON_TCP_RFC7323_TW_PAWS: PAWS check, socket is in 292 * TIME_WAIT state. 293 * Corresponds to LINUX_MIB_PAWS_TW_REJECTED. 294 */ 295 SKB_DROP_REASON_TCP_RFC7323_TW_PAWS, 296 /** 297 * @SKB_DROP_REASON_TCP_RFC7323_TSECR: PAWS check, invalid TSEcr. 298 * Corresponds to LINUX_MIB_TSECRREJECTED. 299 */ 300 SKB_DROP_REASON_TCP_RFC7323_TSECR, 301 /** @SKB_DROP_REASON_TCP_LISTEN_OVERFLOW: listener queue full. */ 302 SKB_DROP_REASON_TCP_LISTEN_OVERFLOW, 303 /** @SKB_DROP_REASON_TCP_OLD_SEQUENCE: Old SEQ field (duplicate packet) */ 304 SKB_DROP_REASON_TCP_OLD_SEQUENCE, 305 /** @SKB_DROP_REASON_TCP_INVALID_SEQUENCE: Not acceptable SEQ field. */ 306 SKB_DROP_REASON_TCP_INVALID_SEQUENCE, 307 /** 308 * @SKB_DROP_REASON_TCP_INVALID_END_SEQUENCE: 309 * Not acceptable END_SEQ field. 310 * Corresponds to LINUX_MIB_BEYOND_WINDOW. 311 */ 312 SKB_DROP_REASON_TCP_INVALID_END_SEQUENCE, 313 /** 314 * @SKB_DROP_REASON_TCP_INVALID_ACK_SEQUENCE: Not acceptable ACK SEQ 315 * field because ack sequence is not in the window between snd_una 316 * and snd_nxt 317 */ 318 SKB_DROP_REASON_TCP_INVALID_ACK_SEQUENCE, 319 /** @SKB_DROP_REASON_TCP_RESET: Invalid RST packet */ 320 SKB_DROP_REASON_TCP_RESET, 321 /** 322 * @SKB_DROP_REASON_TCP_INVALID_SYN: Incoming packet has unexpected 323 * SYN flag 324 */ 325 SKB_DROP_REASON_TCP_INVALID_SYN, 326 /** @SKB_DROP_REASON_TCP_CLOSE: TCP socket in CLOSE state */ 327 SKB_DROP_REASON_TCP_CLOSE, 328 /** @SKB_DROP_REASON_TCP_FASTOPEN: dropped by FASTOPEN request socket */ 329 SKB_DROP_REASON_TCP_FASTOPEN, 330 /** @SKB_DROP_REASON_TCP_OLD_ACK: TCP ACK is old, but in window */ 331 SKB_DROP_REASON_TCP_OLD_ACK, 332 /** @SKB_DROP_REASON_TCP_TOO_OLD_ACK: TCP ACK is too old */ 333 SKB_DROP_REASON_TCP_TOO_OLD_ACK, 334 /** 335 * @SKB_DROP_REASON_TCP_ACK_UNSENT_DATA: TCP ACK for data we haven't 336 * sent yet 337 */ 338 SKB_DROP_REASON_TCP_ACK_UNSENT_DATA, 339 /** @SKB_DROP_REASON_TCP_OFO_QUEUE_PRUNE: pruned from TCP OFO queue */ 340 SKB_DROP_REASON_TCP_OFO_QUEUE_PRUNE, 341 /** @SKB_DROP_REASON_TCP_OFO_DROP: data already in receive queue */ 342 SKB_DROP_REASON_TCP_OFO_DROP, 343 /** @SKB_DROP_REASON_IP_OUTNOROUTES: route lookup failed */ 344 SKB_DROP_REASON_IP_OUTNOROUTES, 345 /** 346 * @SKB_DROP_REASON_BPF_CGROUP_EGRESS: dropped by BPF_PROG_TYPE_CGROUP_SKB 347 * eBPF program 348 */ 349 SKB_DROP_REASON_BPF_CGROUP_EGRESS, 350 /** @SKB_DROP_REASON_IPV6DISABLED: IPv6 is disabled on the device */ 351 SKB_DROP_REASON_IPV6DISABLED, 352 /** @SKB_DROP_REASON_NEIGH_CREATEFAIL: failed to create neigh entry */ 353 SKB_DROP_REASON_NEIGH_CREATEFAIL, 354 /** @SKB_DROP_REASON_NEIGH_FAILED: neigh entry in failed state */ 355 SKB_DROP_REASON_NEIGH_FAILED, 356 /** @SKB_DROP_REASON_NEIGH_QUEUEFULL: arp_queue for neigh entry is full */ 357 SKB_DROP_REASON_NEIGH_QUEUEFULL, 358 /** @SKB_DROP_REASON_NEIGH_DEAD: neigh entry is dead */ 359 SKB_DROP_REASON_NEIGH_DEAD, 360 /** @SKB_DROP_REASON_NEIGH_HH_FILLFAIL: failed to fill the device hard header */ 361 SKB_DROP_REASON_NEIGH_HH_FILLFAIL, 362 /** @SKB_DROP_REASON_TC_EGRESS: dropped in TC egress HOOK */ 363 SKB_DROP_REASON_TC_EGRESS, 364 /** @SKB_DROP_REASON_SECURITY_HOOK: dropped due to security HOOK */ 365 SKB_DROP_REASON_SECURITY_HOOK, 366 /** 367 * @SKB_DROP_REASON_QDISC_DROP: dropped by qdisc during enqueue or 368 * dequeue. More specific drop reasons are available via the 369 * qdisc:qdisc_drop tracepoint, which also provides qdisc handle 370 * and name for identifying the source. 371 */ 372 SKB_DROP_REASON_QDISC_DROP, 373 /** 374 * @SKB_DROP_REASON_QDISC_BURST_DROP: dropped when net.core.qdisc_max_burst 375 * limit is hit. 376 */ 377 SKB_DROP_REASON_QDISC_BURST_DROP, 378 /** 379 * @SKB_DROP_REASON_CPU_BACKLOG: failed to enqueue the skb to the per CPU 380 * backlog queue. This can be caused by backlog queue full (see 381 * netdev_max_backlog in net.rst) or RPS flow limit 382 */ 383 SKB_DROP_REASON_CPU_BACKLOG, 384 /** @SKB_DROP_REASON_XDP: dropped by XDP in input path */ 385 SKB_DROP_REASON_XDP, 386 /** @SKB_DROP_REASON_TC_INGRESS: dropped in TC ingress HOOK */ 387 SKB_DROP_REASON_TC_INGRESS, 388 /** @SKB_DROP_REASON_UNHANDLED_PROTO: protocol not implemented or not supported */ 389 SKB_DROP_REASON_UNHANDLED_PROTO, 390 /** @SKB_DROP_REASON_SKB_CSUM: sk_buff checksum computation error */ 391 SKB_DROP_REASON_SKB_CSUM, 392 /** @SKB_DROP_REASON_SKB_GSO_SEG: gso segmentation error */ 393 SKB_DROP_REASON_SKB_GSO_SEG, 394 /** 395 * @SKB_DROP_REASON_SKB_UCOPY_FAULT: failed to copy data from user space, 396 * e.g., via zerocopy_sg_from_iter() or skb_orphan_frags_rx() 397 */ 398 SKB_DROP_REASON_SKB_UCOPY_FAULT, 399 /** @SKB_DROP_REASON_DEV_HDR: device driver specific header/metadata is invalid */ 400 SKB_DROP_REASON_DEV_HDR, 401 /** 402 * @SKB_DROP_REASON_DEV_READY: the device is not ready to xmit/recv due to 403 * any of its data structure that is not up/ready/initialized, 404 * e.g., the IFF_UP is not set, or driver specific tun->tfiles[txq] 405 * is not initialized 406 */ 407 SKB_DROP_REASON_DEV_READY, 408 /** @SKB_DROP_REASON_FULL_RING: ring buffer is full */ 409 SKB_DROP_REASON_FULL_RING, 410 /** @SKB_DROP_REASON_NOMEM: error due to OOM */ 411 SKB_DROP_REASON_NOMEM, 412 /** 413 * @SKB_DROP_REASON_HDR_TRUNC: failed to trunc/extract the header from 414 * networking data, e.g., failed to pull the protocol header from 415 * frags via pskb_may_pull() 416 */ 417 SKB_DROP_REASON_HDR_TRUNC, 418 /** 419 * @SKB_DROP_REASON_TAP_FILTER: dropped by (ebpf) filter directly attached 420 * to tun/tap, e.g., via TUNSETFILTEREBPF 421 */ 422 SKB_DROP_REASON_TAP_FILTER, 423 /** 424 * @SKB_DROP_REASON_TAP_TXFILTER: dropped by tx filter implemented at 425 * tun/tap, e.g., check_filter() 426 */ 427 SKB_DROP_REASON_TAP_TXFILTER, 428 /** @SKB_DROP_REASON_ICMP_CSUM: ICMP checksum error */ 429 SKB_DROP_REASON_ICMP_CSUM, 430 /** 431 * @SKB_DROP_REASON_INVALID_PROTO: the packet doesn't follow RFC 2211, 432 * such as a broadcasts ICMP_TIMESTAMP 433 */ 434 SKB_DROP_REASON_INVALID_PROTO, 435 /** 436 * @SKB_DROP_REASON_IP_INADDRERRORS: host unreachable, corresponding to 437 * IPSTATS_MIB_INADDRERRORS 438 */ 439 SKB_DROP_REASON_IP_INADDRERRORS, 440 /** 441 * @SKB_DROP_REASON_IP_INNOROUTES: network unreachable, corresponding to 442 * IPSTATS_MIB_INADDRERRORS 443 */ 444 SKB_DROP_REASON_IP_INNOROUTES, 445 /** @SKB_DROP_REASON_IP_LOCAL_SOURCE: the source ip is local */ 446 SKB_DROP_REASON_IP_LOCAL_SOURCE, 447 /** 448 * @SKB_DROP_REASON_IP_INVALID_SOURCE: the source ip is invalid: 449 * 1) source ip is multicast or limited broadcast 450 * 2) source ip is zero and not IGMP 451 */ 452 SKB_DROP_REASON_IP_INVALID_SOURCE, 453 /** @SKB_DROP_REASON_IP_LOCALNET: source or dest ip is local net */ 454 SKB_DROP_REASON_IP_LOCALNET, 455 /** 456 * @SKB_DROP_REASON_IP_INVALID_DEST: the dest ip is invalid: 457 * 1) dest ip is 0 458 */ 459 SKB_DROP_REASON_IP_INVALID_DEST, 460 /** 461 * @SKB_DROP_REASON_PKT_TOO_BIG: packet size is too big (maybe exceed the 462 * MTU) 463 */ 464 SKB_DROP_REASON_PKT_TOO_BIG, 465 /** @SKB_DROP_REASON_DUP_FRAG: duplicate fragment */ 466 SKB_DROP_REASON_DUP_FRAG, 467 /** @SKB_DROP_REASON_FRAG_REASM_TIMEOUT: fragment reassembly timeout */ 468 SKB_DROP_REASON_FRAG_REASM_TIMEOUT, 469 /** 470 * @SKB_DROP_REASON_FRAG_TOO_FAR: ipv4 fragment too far. 471 * (/proc/sys/net/ipv4/ipfrag_max_dist) 472 */ 473 SKB_DROP_REASON_FRAG_TOO_FAR, 474 /** 475 * @SKB_DROP_REASON_TCP_MINTTL: ipv4 ttl or ipv6 hoplimit below 476 * the threshold (IP_MINTTL or IPV6_MINHOPCOUNT). 477 */ 478 SKB_DROP_REASON_TCP_MINTTL, 479 /** @SKB_DROP_REASON_IPV6_BAD_EXTHDR: Bad IPv6 extension header. */ 480 SKB_DROP_REASON_IPV6_BAD_EXTHDR, 481 /** @SKB_DROP_REASON_IPV6_NDISC_FRAG: invalid frag (suppress_frag_ndisc). */ 482 SKB_DROP_REASON_IPV6_NDISC_FRAG, 483 /** @SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT: invalid hop limit. */ 484 SKB_DROP_REASON_IPV6_NDISC_HOP_LIMIT, 485 /** @SKB_DROP_REASON_IPV6_NDISC_BAD_CODE: invalid NDISC icmp6 code. */ 486 SKB_DROP_REASON_IPV6_NDISC_BAD_CODE, 487 /** @SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS: invalid NDISC options. */ 488 SKB_DROP_REASON_IPV6_NDISC_BAD_OPTIONS, 489 /** 490 * @SKB_DROP_REASON_IPV6_NDISC_NS_OTHERHOST: NEIGHBOUR SOLICITATION 491 * for another host. 492 */ 493 SKB_DROP_REASON_IPV6_NDISC_NS_OTHERHOST, 494 /** @SKB_DROP_REASON_QUEUE_PURGE: bulk free. */ 495 SKB_DROP_REASON_QUEUE_PURGE, 496 /** 497 * @SKB_DROP_REASON_TC_COOKIE_ERROR: An error occurred whilst 498 * processing a tc ext cookie. 499 */ 500 SKB_DROP_REASON_TC_COOKIE_ERROR, 501 /** 502 * @SKB_DROP_REASON_PACKET_SOCK_ERROR: generic packet socket errors 503 * after its filter matches an incoming packet. 504 */ 505 SKB_DROP_REASON_PACKET_SOCK_ERROR, 506 /** @SKB_DROP_REASON_TC_CHAIN_NOTFOUND: tc chain lookup failed. */ 507 SKB_DROP_REASON_TC_CHAIN_NOTFOUND, 508 /** 509 * @SKB_DROP_REASON_TC_RECLASSIFY_LOOP: tc exceeded max reclassify loop 510 * iterations. 511 */ 512 SKB_DROP_REASON_TC_RECLASSIFY_LOOP, 513 /** 514 * @SKB_DROP_REASON_VXLAN_INVALID_HDR: VXLAN header is invalid. E.g.: 515 * 1) reserved fields are not zero 516 * 2) "I" flag is not set 517 */ 518 SKB_DROP_REASON_VXLAN_INVALID_HDR, 519 /** @SKB_DROP_REASON_VXLAN_VNI_NOT_FOUND: no VXLAN device found for VNI */ 520 SKB_DROP_REASON_VXLAN_VNI_NOT_FOUND, 521 /** @SKB_DROP_REASON_MAC_INVALID_SOURCE: source mac is invalid */ 522 SKB_DROP_REASON_MAC_INVALID_SOURCE, 523 /** 524 * @SKB_DROP_REASON_VXLAN_ENTRY_EXISTS: trying to migrate a static 525 * entry or an entry pointing to a nexthop. 526 */ 527 SKB_DROP_REASON_VXLAN_ENTRY_EXISTS, 528 /** @SKB_DROP_REASON_NO_TX_TARGET: no target found for xmit */ 529 SKB_DROP_REASON_NO_TX_TARGET, 530 /** 531 * @SKB_DROP_REASON_IP_TUNNEL_ECN: skb is dropped according to 532 * RFC 6040 4.2, see __INET_ECN_decapsulate() for detail. 533 */ 534 SKB_DROP_REASON_IP_TUNNEL_ECN, 535 /** 536 * @SKB_DROP_REASON_TUNNEL_TXINFO: packet without necessary metadata 537 * reached a device which is in "external" mode. 538 */ 539 SKB_DROP_REASON_TUNNEL_TXINFO, 540 /** 541 * @SKB_DROP_REASON_LOCAL_MAC: the source MAC address is equal to 542 * the MAC address of the local netdev. 543 */ 544 SKB_DROP_REASON_LOCAL_MAC, 545 /** 546 * @SKB_DROP_REASON_ARP_PVLAN_DISABLE: packet which is not IP is 547 * forwarded to the in_dev, and the proxy_arp_pvlan is not 548 * enabled. 549 */ 550 SKB_DROP_REASON_ARP_PVLAN_DISABLE, 551 /** 552 * @SKB_DROP_REASON_MAC_IEEE_MAC_CONTROL: the destination MAC address 553 * is an IEEE MAC Control address. 554 */ 555 SKB_DROP_REASON_MAC_IEEE_MAC_CONTROL, 556 /** 557 * @SKB_DROP_REASON_BRIDGE_INGRESS_STP_STATE: the STP state of the 558 * ingress bridge port does not allow frames to be forwarded. 559 */ 560 SKB_DROP_REASON_BRIDGE_INGRESS_STP_STATE, 561 /** 562 * @SKB_DROP_REASON_CAN_RX_INVALID_FRAME: received 563 * non conform CAN frame (or device is unable to receive CAN frames) 564 */ 565 SKB_DROP_REASON_CAN_RX_INVALID_FRAME, 566 /** 567 * @SKB_DROP_REASON_CANFD_RX_INVALID_FRAME: received 568 * non conform CAN-FD frame (or device is unable to receive CAN frames) 569 */ 570 SKB_DROP_REASON_CANFD_RX_INVALID_FRAME, 571 /** 572 * @SKB_DROP_REASON_CANXL_RX_INVALID_FRAME: received 573 * non conform CAN-XL frame (or device is unable to receive CAN frames) 574 */ 575 SKB_DROP_REASON_CANXL_RX_INVALID_FRAME, 576 /** 577 * @SKB_DROP_REASON_PFMEMALLOC: packet allocated from memory reserve 578 * reached a path or socket not eligible for use of memory reserves 579 */ 580 SKB_DROP_REASON_PFMEMALLOC, 581 /** @SKB_DROP_REASON_PSP_INPUT: PSP input checks failed */ 582 SKB_DROP_REASON_PSP_INPUT, 583 /** @SKB_DROP_REASON_PSP_OUTPUT: PSP output checks failed */ 584 SKB_DROP_REASON_PSP_OUTPUT, 585 /** 586 * @SKB_DROP_REASON_MAX: the maximum of core drop reasons, which 587 * shouldn't be used as a real 'reason' - only for tracing code gen 588 */ 589 SKB_DROP_REASON_MAX, 590 591 /** 592 * @SKB_DROP_REASON_SUBSYS_MASK: subsystem mask in drop reasons, 593 * see &enum skb_drop_reason_subsys 594 */ 595 SKB_DROP_REASON_SUBSYS_MASK = 0xffff0000, 596 }; 597 598 #define SKB_DROP_REASON_SUBSYS_SHIFT 16 599 600 #define SKB_DR_INIT(name, reason) \ 601 enum skb_drop_reason name = SKB_DROP_REASON_##reason 602 #define SKB_DR(name) \ 603 SKB_DR_INIT(name, NOT_SPECIFIED) 604 #define SKB_DR_SET(name, reason) \ 605 (name = SKB_DROP_REASON_##reason) 606 #define SKB_DR_OR(name, reason) \ 607 do { \ 608 if (name == SKB_DROP_REASON_NOT_SPECIFIED || \ 609 name == SKB_NOT_DROPPED_YET) \ 610 SKB_DR_SET(name, reason); \ 611 } while (0) 612 613 #endif 614