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