1 #ifndef __LINUX_RTNETLINK_H 2 #define __LINUX_RTNETLINK_H 3 4 #include <linux/netlink.h> 5 6 /**** 7 * Routing/neighbour discovery messages. 8 ****/ 9 10 /* Types of messages */ 11 12 enum { 13 RTM_BASE = 16, 14 #define RTM_BASE RTM_BASE 15 16 RTM_NEWLINK = 16, 17 #define RTM_NEWLINK RTM_NEWLINK 18 RTM_DELLINK, 19 #define RTM_DELLINK RTM_DELLINK 20 RTM_GETLINK, 21 #define RTM_GETLINK RTM_GETLINK 22 RTM_SETLINK, 23 #define RTM_SETLINK RTM_SETLINK 24 25 RTM_NEWADDR = 20, 26 #define RTM_NEWADDR RTM_NEWADDR 27 RTM_DELADDR, 28 #define RTM_DELADDR RTM_DELADDR 29 RTM_GETADDR, 30 #define RTM_GETADDR RTM_GETADDR 31 32 RTM_NEWROUTE = 24, 33 #define RTM_NEWROUTE RTM_NEWROUTE 34 RTM_DELROUTE, 35 #define RTM_DELROUTE RTM_DELROUTE 36 RTM_GETROUTE, 37 #define RTM_GETROUTE RTM_GETROUTE 38 39 RTM_NEWNEIGH = 28, 40 #define RTM_NEWNEIGH RTM_NEWNEIGH 41 RTM_DELNEIGH, 42 #define RTM_DELNEIGH RTM_DELNEIGH 43 RTM_GETNEIGH, 44 #define RTM_GETNEIGH RTM_GETNEIGH 45 46 RTM_NEWRULE = 32, 47 #define RTM_NEWRULE RTM_NEWRULE 48 RTM_DELRULE, 49 #define RTM_DELRULE RTM_DELRULE 50 RTM_GETRULE, 51 #define RTM_GETRULE RTM_GETRULE 52 53 RTM_NEWQDISC = 36, 54 #define RTM_NEWQDISC RTM_NEWQDISC 55 RTM_DELQDISC, 56 #define RTM_DELQDISC RTM_DELQDISC 57 RTM_GETQDISC, 58 #define RTM_GETQDISC RTM_GETQDISC 59 60 RTM_NEWTCLASS = 40, 61 #define RTM_NEWTCLASS RTM_NEWTCLASS 62 RTM_DELTCLASS, 63 #define RTM_DELTCLASS RTM_DELTCLASS 64 RTM_GETTCLASS, 65 #define RTM_GETTCLASS RTM_GETTCLASS 66 67 RTM_NEWTFILTER = 44, 68 #define RTM_NEWTFILTER RTM_NEWTFILTER 69 RTM_DELTFILTER, 70 #define RTM_DELTFILTER RTM_DELTFILTER 71 RTM_GETTFILTER, 72 #define RTM_GETTFILTER RTM_GETTFILTER 73 74 RTM_NEWACTION = 48, 75 #define RTM_NEWACTION RTM_NEWACTION 76 RTM_DELACTION, 77 #define RTM_DELACTION RTM_DELACTION 78 RTM_GETACTION, 79 #define RTM_GETACTION RTM_GETACTION 80 81 RTM_NEWPREFIX = 52, 82 #define RTM_NEWPREFIX RTM_NEWPREFIX 83 RTM_GETPREFIX = 54, 84 #define RTM_GETPREFIX RTM_GETPREFIX 85 86 RTM_GETMULTICAST = 58, 87 #define RTM_GETMULTICAST RTM_GETMULTICAST 88 89 RTM_GETANYCAST = 62, 90 #define RTM_GETANYCAST RTM_GETANYCAST 91 92 RTM_NEWNEIGHTBL = 64, 93 #define RTM_NEWNEIGHTBL RTM_NEWNEIGHTBL 94 RTM_GETNEIGHTBL = 66, 95 #define RTM_GETNEIGHTBL RTM_GETNEIGHTBL 96 RTM_SETNEIGHTBL, 97 #define RTM_SETNEIGHTBL RTM_SETNEIGHTBL 98 99 __RTM_MAX, 100 #define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1) 101 }; 102 103 #define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE) 104 #define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2) 105 #define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2) 106 107 /* 108 Generic structure for encapsulation of optional route information. 109 It is reminiscent of sockaddr, but with sa_family replaced 110 with attribute type. 111 */ 112 113 struct rtattr 114 { 115 unsigned short rta_len; 116 unsigned short rta_type; 117 }; 118 119 /* Macros to handle rtattributes */ 120 121 #define RTA_ALIGNTO 4 122 #define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) ) 123 #define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \ 124 (rta)->rta_len >= sizeof(struct rtattr) && \ 125 (rta)->rta_len <= (len)) 126 #define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \ 127 (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len))) 128 #define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len)) 129 #define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len)) 130 #define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0))) 131 #define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0)) 132 133 134 135 136 /****************************************************************************** 137 * Definitions used in routing table administration. 138 ****/ 139 140 struct rtmsg 141 { 142 unsigned char rtm_family; 143 unsigned char rtm_dst_len; 144 unsigned char rtm_src_len; 145 unsigned char rtm_tos; 146 147 unsigned char rtm_table; /* Routing table id */ 148 unsigned char rtm_protocol; /* Routing protocol; see below */ 149 unsigned char rtm_scope; /* See below */ 150 unsigned char rtm_type; /* See below */ 151 152 unsigned rtm_flags; 153 }; 154 155 /* rtm_type */ 156 157 enum 158 { 159 RTN_UNSPEC, 160 RTN_UNICAST, /* Gateway or direct route */ 161 RTN_LOCAL, /* Accept locally */ 162 RTN_BROADCAST, /* Accept locally as broadcast, 163 send as broadcast */ 164 RTN_ANYCAST, /* Accept locally as broadcast, 165 but send as unicast */ 166 RTN_MULTICAST, /* Multicast route */ 167 RTN_BLACKHOLE, /* Drop */ 168 RTN_UNREACHABLE, /* Destination is unreachable */ 169 RTN_PROHIBIT, /* Administratively prohibited */ 170 RTN_THROW, /* Not in this table */ 171 RTN_NAT, /* Translate this address */ 172 RTN_XRESOLVE, /* Use external resolver */ 173 __RTN_MAX 174 }; 175 176 #define RTN_MAX (__RTN_MAX - 1) 177 178 179 /* rtm_protocol */ 180 181 #define RTPROT_UNSPEC 0 182 #define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects; 183 not used by current IPv4 */ 184 #define RTPROT_KERNEL 2 /* Route installed by kernel */ 185 #define RTPROT_BOOT 3 /* Route installed during boot */ 186 #define RTPROT_STATIC 4 /* Route installed by administrator */ 187 188 /* Values of protocol >= RTPROT_STATIC are not interpreted by kernel; 189 they are just passed from user and back as is. 190 It will be used by hypothetical multiple routing daemons. 191 Note that protocol values should be standardized in order to 192 avoid conflicts. 193 */ 194 195 #define RTPROT_GATED 8 /* Apparently, GateD */ 196 #define RTPROT_RA 9 /* RDISC/ND router advertisements */ 197 #define RTPROT_MRT 10 /* Merit MRT */ 198 #define RTPROT_ZEBRA 11 /* Zebra */ 199 #define RTPROT_BIRD 12 /* BIRD */ 200 #define RTPROT_DNROUTED 13 /* DECnet routing daemon */ 201 #define RTPROT_XORP 14 /* XORP */ 202 #define RTPROT_NTK 15 /* Netsukuku */ 203 204 /* rtm_scope 205 206 Really it is not scope, but sort of distance to the destination. 207 NOWHERE are reserved for not existing destinations, HOST is our 208 local addresses, LINK are destinations, located on directly attached 209 link and UNIVERSE is everywhere in the Universe. 210 211 Intermediate values are also possible f.e. interior routes 212 could be assigned a value between UNIVERSE and LINK. 213 */ 214 215 enum rt_scope_t 216 { 217 RT_SCOPE_UNIVERSE=0, 218 /* User defined values */ 219 RT_SCOPE_SITE=200, 220 RT_SCOPE_LINK=253, 221 RT_SCOPE_HOST=254, 222 RT_SCOPE_NOWHERE=255 223 }; 224 225 /* rtm_flags */ 226 227 #define RTM_F_NOTIFY 0x100 /* Notify user of route change */ 228 #define RTM_F_CLONED 0x200 /* This route is cloned */ 229 #define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */ 230 #define RTM_F_PREFIX 0x800 /* Prefix addresses */ 231 232 /* Reserved table identifiers */ 233 234 enum rt_class_t 235 { 236 RT_TABLE_UNSPEC=0, 237 /* User defined values */ 238 RT_TABLE_DEFAULT=253, 239 RT_TABLE_MAIN=254, 240 RT_TABLE_LOCAL=255, 241 __RT_TABLE_MAX 242 }; 243 #define RT_TABLE_MAX (__RT_TABLE_MAX - 1) 244 245 246 247 /* Routing message attributes */ 248 249 enum rtattr_type_t 250 { 251 RTA_UNSPEC, 252 RTA_DST, 253 RTA_SRC, 254 RTA_IIF, 255 RTA_OIF, 256 RTA_GATEWAY, 257 RTA_PRIORITY, 258 RTA_PREFSRC, 259 RTA_METRICS, 260 RTA_MULTIPATH, 261 RTA_PROTOINFO, 262 RTA_FLOW, 263 RTA_CACHEINFO, 264 RTA_SESSION, 265 RTA_MP_ALGO, 266 __RTA_MAX 267 }; 268 269 #define RTA_MAX (__RTA_MAX - 1) 270 271 #define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg)))) 272 #define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg)) 273 274 /* RTM_MULTIPATH --- array of struct rtnexthop. 275 * 276 * "struct rtnexthop" describes all necessary nexthop information, 277 * i.e. parameters of path to a destination via this nexthop. 278 * 279 * At the moment it is impossible to set different prefsrc, mtu, window 280 * and rtt for different paths from multipath. 281 */ 282 283 struct rtnexthop 284 { 285 unsigned short rtnh_len; 286 unsigned char rtnh_flags; 287 unsigned char rtnh_hops; 288 int rtnh_ifindex; 289 }; 290 291 /* rtnh_flags */ 292 293 #define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */ 294 #define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */ 295 #define RTNH_F_ONLINK 4 /* Gateway is forced on link */ 296 297 /* Macros to handle hexthops */ 298 299 #define RTNH_ALIGNTO 4 300 #define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) ) 301 #define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \ 302 ((int)(rtnh)->rtnh_len) <= (len)) 303 #define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len))) 304 #define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len)) 305 #define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len)) 306 #define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0))) 307 308 /* RTM_CACHEINFO */ 309 310 struct rta_cacheinfo 311 { 312 __u32 rta_clntref; 313 __u32 rta_lastuse; 314 __s32 rta_expires; 315 __u32 rta_error; 316 __u32 rta_used; 317 318 #define RTNETLINK_HAVE_PEERINFO 1 319 __u32 rta_id; 320 __u32 rta_ts; 321 __u32 rta_tsage; 322 }; 323 324 /* RTM_METRICS --- array of struct rtattr with types of RTAX_* */ 325 326 enum 327 { 328 RTAX_UNSPEC, 329 #define RTAX_UNSPEC RTAX_UNSPEC 330 RTAX_LOCK, 331 #define RTAX_LOCK RTAX_LOCK 332 RTAX_MTU, 333 #define RTAX_MTU RTAX_MTU 334 RTAX_WINDOW, 335 #define RTAX_WINDOW RTAX_WINDOW 336 RTAX_RTT, 337 #define RTAX_RTT RTAX_RTT 338 RTAX_RTTVAR, 339 #define RTAX_RTTVAR RTAX_RTTVAR 340 RTAX_SSTHRESH, 341 #define RTAX_SSTHRESH RTAX_SSTHRESH 342 RTAX_CWND, 343 #define RTAX_CWND RTAX_CWND 344 RTAX_ADVMSS, 345 #define RTAX_ADVMSS RTAX_ADVMSS 346 RTAX_REORDERING, 347 #define RTAX_REORDERING RTAX_REORDERING 348 RTAX_HOPLIMIT, 349 #define RTAX_HOPLIMIT RTAX_HOPLIMIT 350 RTAX_INITCWND, 351 #define RTAX_INITCWND RTAX_INITCWND 352 RTAX_FEATURES, 353 #define RTAX_FEATURES RTAX_FEATURES 354 __RTAX_MAX 355 }; 356 357 #define RTAX_MAX (__RTAX_MAX - 1) 358 359 #define RTAX_FEATURE_ECN 0x00000001 360 #define RTAX_FEATURE_SACK 0x00000002 361 #define RTAX_FEATURE_TIMESTAMP 0x00000004 362 #define RTAX_FEATURE_ALLFRAG 0x00000008 363 364 struct rta_session 365 { 366 __u8 proto; 367 __u8 pad1; 368 __u16 pad2; 369 370 union { 371 struct { 372 __u16 sport; 373 __u16 dport; 374 } ports; 375 376 struct { 377 __u8 type; 378 __u8 code; 379 __u16 ident; 380 } icmpt; 381 382 __u32 spi; 383 } u; 384 }; 385 386 387 /********************************************************* 388 * Interface address. 389 ****/ 390 391 struct ifaddrmsg 392 { 393 unsigned char ifa_family; 394 unsigned char ifa_prefixlen; /* The prefix length */ 395 unsigned char ifa_flags; /* Flags */ 396 unsigned char ifa_scope; /* See above */ 397 int ifa_index; /* Link index */ 398 }; 399 400 enum 401 { 402 IFA_UNSPEC, 403 IFA_ADDRESS, 404 IFA_LOCAL, 405 IFA_LABEL, 406 IFA_BROADCAST, 407 IFA_ANYCAST, 408 IFA_CACHEINFO, 409 IFA_MULTICAST, 410 __IFA_MAX 411 }; 412 413 #define IFA_MAX (__IFA_MAX - 1) 414 415 /* ifa_flags */ 416 417 #define IFA_F_SECONDARY 0x01 418 #define IFA_F_TEMPORARY IFA_F_SECONDARY 419 420 #define IFA_F_DEPRECATED 0x20 421 #define IFA_F_TENTATIVE 0x40 422 #define IFA_F_PERMANENT 0x80 423 424 struct ifa_cacheinfo 425 { 426 __u32 ifa_prefered; 427 __u32 ifa_valid; 428 __u32 cstamp; /* created timestamp, hundredths of seconds */ 429 __u32 tstamp; /* updated timestamp, hundredths of seconds */ 430 }; 431 432 433 #define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) 434 #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) 435 436 /* 437 Important comment: 438 IFA_ADDRESS is prefix address, rather than local interface address. 439 It makes no difference for normally configured broadcast interfaces, 440 but for point-to-point IFA_ADDRESS is DESTINATION address, 441 local address is supplied in IFA_LOCAL attribute. 442 */ 443 444 /************************************************************** 445 * Neighbour discovery. 446 ****/ 447 448 struct ndmsg 449 { 450 unsigned char ndm_family; 451 unsigned char ndm_pad1; 452 unsigned short ndm_pad2; 453 int ndm_ifindex; /* Link index */ 454 __u16 ndm_state; 455 __u8 ndm_flags; 456 __u8 ndm_type; 457 }; 458 459 enum 460 { 461 NDA_UNSPEC, 462 NDA_DST, 463 NDA_LLADDR, 464 NDA_CACHEINFO, 465 NDA_PROBES, 466 __NDA_MAX 467 }; 468 469 #define NDA_MAX (__NDA_MAX - 1) 470 471 #define NDA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg)))) 472 #define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg)) 473 474 /* 475 * Neighbor Cache Entry Flags 476 */ 477 478 #define NTF_PROXY 0x08 /* == ATF_PUBL */ 479 #define NTF_ROUTER 0x80 480 481 /* 482 * Neighbor Cache Entry States. 483 */ 484 485 #define NUD_INCOMPLETE 0x01 486 #define NUD_REACHABLE 0x02 487 #define NUD_STALE 0x04 488 #define NUD_DELAY 0x08 489 #define NUD_PROBE 0x10 490 #define NUD_FAILED 0x20 491 492 /* Dummy states */ 493 #define NUD_NOARP 0x40 494 #define NUD_PERMANENT 0x80 495 #define NUD_NONE 0x00 496 497 498 struct nda_cacheinfo 499 { 500 __u32 ndm_confirmed; 501 __u32 ndm_used; 502 __u32 ndm_updated; 503 __u32 ndm_refcnt; 504 }; 505 506 507 /***************************************************************** 508 * Neighbour tables specific messages. 509 * 510 * To retrieve the neighbour tables send RTM_GETNEIGHTBL with the 511 * NLM_F_DUMP flag set. Every neighbour table configuration is 512 * spread over multiple messages to avoid running into message 513 * size limits on systems with many interfaces. The first message 514 * in the sequence transports all not device specific data such as 515 * statistics, configuration, and the default parameter set. 516 * This message is followed by 0..n messages carrying device 517 * specific parameter sets. 518 * Although the ordering should be sufficient, NDTA_NAME can be 519 * used to identify sequences. The initial message can be identified 520 * by checking for NDTA_CONFIG. The device specific messages do 521 * not contain this TLV but have NDTPA_IFINDEX set to the 522 * corresponding interface index. 523 * 524 * To change neighbour table attributes, send RTM_SETNEIGHTBL 525 * with NDTA_NAME set. Changeable attribute include NDTA_THRESH[1-3], 526 * NDTA_GC_INTERVAL, and all TLVs in NDTA_PARMS unless marked 527 * otherwise. Device specific parameter sets can be changed by 528 * setting NDTPA_IFINDEX to the interface index of the corresponding 529 * device. 530 ****/ 531 532 struct ndt_stats 533 { 534 __u64 ndts_allocs; 535 __u64 ndts_destroys; 536 __u64 ndts_hash_grows; 537 __u64 ndts_res_failed; 538 __u64 ndts_lookups; 539 __u64 ndts_hits; 540 __u64 ndts_rcv_probes_mcast; 541 __u64 ndts_rcv_probes_ucast; 542 __u64 ndts_periodic_gc_runs; 543 __u64 ndts_forced_gc_runs; 544 }; 545 546 enum { 547 NDTPA_UNSPEC, 548 NDTPA_IFINDEX, /* u32, unchangeable */ 549 NDTPA_REFCNT, /* u32, read-only */ 550 NDTPA_REACHABLE_TIME, /* u64, read-only, msecs */ 551 NDTPA_BASE_REACHABLE_TIME, /* u64, msecs */ 552 NDTPA_RETRANS_TIME, /* u64, msecs */ 553 NDTPA_GC_STALETIME, /* u64, msecs */ 554 NDTPA_DELAY_PROBE_TIME, /* u64, msecs */ 555 NDTPA_QUEUE_LEN, /* u32 */ 556 NDTPA_APP_PROBES, /* u32 */ 557 NDTPA_UCAST_PROBES, /* u32 */ 558 NDTPA_MCAST_PROBES, /* u32 */ 559 NDTPA_ANYCAST_DELAY, /* u64, msecs */ 560 NDTPA_PROXY_DELAY, /* u64, msecs */ 561 NDTPA_PROXY_QLEN, /* u32 */ 562 NDTPA_LOCKTIME, /* u64, msecs */ 563 __NDTPA_MAX 564 }; 565 #define NDTPA_MAX (__NDTPA_MAX - 1) 566 567 struct ndtmsg 568 { 569 __u8 ndtm_family; 570 __u8 ndtm_pad1; 571 __u16 ndtm_pad2; 572 }; 573 574 struct ndt_config 575 { 576 __u16 ndtc_key_len; 577 __u16 ndtc_entry_size; 578 __u32 ndtc_entries; 579 __u32 ndtc_last_flush; /* delta to now in msecs */ 580 __u32 ndtc_last_rand; /* delta to now in msecs */ 581 __u32 ndtc_hash_rnd; 582 __u32 ndtc_hash_mask; 583 __u32 ndtc_hash_chain_gc; 584 __u32 ndtc_proxy_qlen; 585 }; 586 587 enum { 588 NDTA_UNSPEC, 589 NDTA_NAME, /* char *, unchangeable */ 590 NDTA_THRESH1, /* u32 */ 591 NDTA_THRESH2, /* u32 */ 592 NDTA_THRESH3, /* u32 */ 593 NDTA_CONFIG, /* struct ndt_config, read-only */ 594 NDTA_PARMS, /* nested TLV NDTPA_* */ 595 NDTA_STATS, /* struct ndt_stats, read-only */ 596 NDTA_GC_INTERVAL, /* u64, msecs */ 597 __NDTA_MAX 598 }; 599 #define NDTA_MAX (__NDTA_MAX - 1) 600 601 #define NDTA_RTA(r) ((struct rtattr*)(((char*)(r)) + \ 602 NLMSG_ALIGN(sizeof(struct ndtmsg)))) 603 #define NDTA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndtmsg)) 604 605 606 /**** 607 * General form of address family dependent message. 608 ****/ 609 610 struct rtgenmsg 611 { 612 unsigned char rtgen_family; 613 }; 614 615 /***************************************************************** 616 * Link layer specific messages. 617 ****/ 618 619 /* struct ifinfomsg 620 * passes link level specific information, not dependent 621 * on network protocol. 622 */ 623 624 struct ifinfomsg 625 { 626 unsigned char ifi_family; 627 unsigned char __ifi_pad; 628 unsigned short ifi_type; /* ARPHRD_* */ 629 int ifi_index; /* Link index */ 630 unsigned ifi_flags; /* IFF_* flags */ 631 unsigned ifi_change; /* IFF_* change mask */ 632 }; 633 634 /******************************************************************** 635 * prefix information 636 ****/ 637 638 struct prefixmsg 639 { 640 unsigned char prefix_family; 641 unsigned char prefix_pad1; 642 unsigned short prefix_pad2; 643 int prefix_ifindex; 644 unsigned char prefix_type; 645 unsigned char prefix_len; 646 unsigned char prefix_flags; 647 unsigned char prefix_pad3; 648 }; 649 650 enum 651 { 652 PREFIX_UNSPEC, 653 PREFIX_ADDRESS, 654 PREFIX_CACHEINFO, 655 __PREFIX_MAX 656 }; 657 658 #define PREFIX_MAX (__PREFIX_MAX - 1) 659 660 struct prefix_cacheinfo 661 { 662 __u32 preferred_time; 663 __u32 valid_time; 664 }; 665 666 /* The struct should be in sync with struct net_device_stats */ 667 struct rtnl_link_stats 668 { 669 __u32 rx_packets; /* total packets received */ 670 __u32 tx_packets; /* total packets transmitted */ 671 __u32 rx_bytes; /* total bytes received */ 672 __u32 tx_bytes; /* total bytes transmitted */ 673 __u32 rx_errors; /* bad packets received */ 674 __u32 tx_errors; /* packet transmit problems */ 675 __u32 rx_dropped; /* no space in linux buffers */ 676 __u32 tx_dropped; /* no space available in linux */ 677 __u32 multicast; /* multicast packets received */ 678 __u32 collisions; 679 680 /* detailed rx_errors: */ 681 __u32 rx_length_errors; 682 __u32 rx_over_errors; /* receiver ring buff overflow */ 683 __u32 rx_crc_errors; /* recved pkt with crc error */ 684 __u32 rx_frame_errors; /* recv'd frame alignment error */ 685 __u32 rx_fifo_errors; /* recv'r fifo overrun */ 686 __u32 rx_missed_errors; /* receiver missed packet */ 687 688 /* detailed tx_errors */ 689 __u32 tx_aborted_errors; 690 __u32 tx_carrier_errors; 691 __u32 tx_fifo_errors; 692 __u32 tx_heartbeat_errors; 693 __u32 tx_window_errors; 694 695 /* for cslip etc */ 696 __u32 rx_compressed; 697 __u32 tx_compressed; 698 }; 699 700 /* The struct should be in sync with struct ifmap */ 701 struct rtnl_link_ifmap 702 { 703 __u64 mem_start; 704 __u64 mem_end; 705 __u64 base_addr; 706 __u16 irq; 707 __u8 dma; 708 __u8 port; 709 }; 710 711 enum 712 { 713 IFLA_UNSPEC, 714 IFLA_ADDRESS, 715 IFLA_BROADCAST, 716 IFLA_IFNAME, 717 IFLA_MTU, 718 IFLA_LINK, 719 IFLA_QDISC, 720 IFLA_STATS, 721 IFLA_COST, 722 #define IFLA_COST IFLA_COST 723 IFLA_PRIORITY, 724 #define IFLA_PRIORITY IFLA_PRIORITY 725 IFLA_MASTER, 726 #define IFLA_MASTER IFLA_MASTER 727 IFLA_WIRELESS, /* Wireless Extension event - see wireless.h */ 728 #define IFLA_WIRELESS IFLA_WIRELESS 729 IFLA_PROTINFO, /* Protocol specific information for a link */ 730 #define IFLA_PROTINFO IFLA_PROTINFO 731 IFLA_TXQLEN, 732 #define IFLA_TXQLEN IFLA_TXQLEN 733 IFLA_MAP, 734 #define IFLA_MAP IFLA_MAP 735 IFLA_WEIGHT, 736 #define IFLA_WEIGHT IFLA_WEIGHT 737 IFLA_OPERSTATE, 738 IFLA_LINKMODE, 739 __IFLA_MAX 740 }; 741 742 743 #define IFLA_MAX (__IFLA_MAX - 1) 744 745 #define IFLA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg)))) 746 #define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg)) 747 748 /* ifi_flags. 749 750 IFF_* flags. 751 752 The only change is: 753 IFF_LOOPBACK, IFF_BROADCAST and IFF_POINTOPOINT are 754 more not changeable by user. They describe link media 755 characteristics and set by device driver. 756 757 Comments: 758 - Combination IFF_BROADCAST|IFF_POINTOPOINT is invalid 759 - If neither of these three flags are set; 760 the interface is NBMA. 761 762 - IFF_MULTICAST does not mean anything special: 763 multicasts can be used on all not-NBMA links. 764 IFF_MULTICAST means that this media uses special encapsulation 765 for multicast frames. Apparently, all IFF_POINTOPOINT and 766 IFF_BROADCAST devices are able to use multicasts too. 767 */ 768 769 /* IFLA_LINK. 770 For usual devices it is equal ifi_index. 771 If it is a "virtual interface" (f.e. tunnel), ifi_link 772 can point to real physical interface (f.e. for bandwidth calculations), 773 or maybe 0, what means, that real media is unknown (usual 774 for IPIP tunnels, when route to endpoint is allowed to change) 775 */ 776 777 /* Subtype attributes for IFLA_PROTINFO */ 778 enum 779 { 780 IFLA_INET6_UNSPEC, 781 IFLA_INET6_FLAGS, /* link flags */ 782 IFLA_INET6_CONF, /* sysctl parameters */ 783 IFLA_INET6_STATS, /* statistics */ 784 IFLA_INET6_MCAST, /* MC things. What of them? */ 785 IFLA_INET6_CACHEINFO, /* time values and max reasm size */ 786 __IFLA_INET6_MAX 787 }; 788 789 #define IFLA_INET6_MAX (__IFLA_INET6_MAX - 1) 790 791 struct ifla_cacheinfo 792 { 793 __u32 max_reasm_len; 794 __u32 tstamp; /* ipv6InterfaceTable updated timestamp */ 795 __u32 reachable_time; 796 __u32 retrans_time; 797 }; 798 799 /***************************************************************** 800 * Traffic control messages. 801 ****/ 802 803 struct tcmsg 804 { 805 unsigned char tcm_family; 806 unsigned char tcm__pad1; 807 unsigned short tcm__pad2; 808 int tcm_ifindex; 809 __u32 tcm_handle; 810 __u32 tcm_parent; 811 __u32 tcm_info; 812 }; 813 814 enum 815 { 816 TCA_UNSPEC, 817 TCA_KIND, 818 TCA_OPTIONS, 819 TCA_STATS, 820 TCA_XSTATS, 821 TCA_RATE, 822 TCA_FCNT, 823 TCA_STATS2, 824 __TCA_MAX 825 }; 826 827 #define TCA_MAX (__TCA_MAX - 1) 828 829 #define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg)))) 830 #define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg)) 831 832 #ifndef __KERNEL__ 833 /* RTnetlink multicast groups - backwards compatibility for userspace */ 834 #define RTMGRP_LINK 1 835 #define RTMGRP_NOTIFY 2 836 #define RTMGRP_NEIGH 4 837 #define RTMGRP_TC 8 838 839 #define RTMGRP_IPV4_IFADDR 0x10 840 #define RTMGRP_IPV4_MROUTE 0x20 841 #define RTMGRP_IPV4_ROUTE 0x40 842 #define RTMGRP_IPV4_RULE 0x80 843 844 #define RTMGRP_IPV6_IFADDR 0x100 845 #define RTMGRP_IPV6_MROUTE 0x200 846 #define RTMGRP_IPV6_ROUTE 0x400 847 #define RTMGRP_IPV6_IFINFO 0x800 848 849 #define RTMGRP_DECnet_IFADDR 0x1000 850 #define RTMGRP_DECnet_ROUTE 0x4000 851 852 #define RTMGRP_IPV6_PREFIX 0x20000 853 #endif 854 855 /* RTnetlink multicast groups */ 856 enum rtnetlink_groups { 857 RTNLGRP_NONE, 858 #define RTNLGRP_NONE RTNLGRP_NONE 859 RTNLGRP_LINK, 860 #define RTNLGRP_LINK RTNLGRP_LINK 861 RTNLGRP_NOTIFY, 862 #define RTNLGRP_NOTIFY RTNLGRP_NOTIFY 863 RTNLGRP_NEIGH, 864 #define RTNLGRP_NEIGH RTNLGRP_NEIGH 865 RTNLGRP_TC, 866 #define RTNLGRP_TC RTNLGRP_TC 867 RTNLGRP_IPV4_IFADDR, 868 #define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR 869 RTNLGRP_IPV4_MROUTE, 870 #define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE 871 RTNLGRP_IPV4_ROUTE, 872 #define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE 873 RTNLGRP_IPV4_RULE, 874 #define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE 875 RTNLGRP_IPV6_IFADDR, 876 #define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR 877 RTNLGRP_IPV6_MROUTE, 878 #define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE 879 RTNLGRP_IPV6_ROUTE, 880 #define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE 881 RTNLGRP_IPV6_IFINFO, 882 #define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO 883 RTNLGRP_DECnet_IFADDR, 884 #define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR 885 RTNLGRP_NOP2, 886 RTNLGRP_DECnet_ROUTE, 887 #define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE 888 RTNLGRP_NOP3, 889 RTNLGRP_NOP4, 890 RTNLGRP_IPV6_PREFIX, 891 #define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX 892 __RTNLGRP_MAX 893 }; 894 #define RTNLGRP_MAX (__RTNLGRP_MAX - 1) 895 896 /* TC action piece */ 897 struct tcamsg 898 { 899 unsigned char tca_family; 900 unsigned char tca__pad1; 901 unsigned short tca__pad2; 902 }; 903 #define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg)))) 904 #define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg)) 905 #define TCA_ACT_TAB 1 /* attr type must be >=1 */ 906 #define TCAA_MAX 1 907 908 /* End of information exported to user level */ 909 910 #ifdef __KERNEL__ 911 912 #include <linux/config.h> 913 #include <linux/mutex.h> 914 915 extern size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size); 916 static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str) 917 { 918 int len = strlen(str) + 1; 919 return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len); 920 } 921 922 extern int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len); 923 924 #define rtattr_parse_nested(tb, max, rta) \ 925 rtattr_parse((tb), (max), RTA_DATA((rta)), RTA_PAYLOAD((rta))) 926 927 extern struct sock *rtnl; 928 929 struct rtnetlink_link 930 { 931 int (*doit)(struct sk_buff *, struct nlmsghdr*, void *attr); 932 int (*dumpit)(struct sk_buff *, struct netlink_callback *cb); 933 }; 934 935 extern struct rtnetlink_link * rtnetlink_links[NPROTO]; 936 extern int rtnetlink_send(struct sk_buff *skb, u32 pid, u32 group, int echo); 937 extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics); 938 939 extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data); 940 941 #define RTA_PUT(skb, attrtype, attrlen, data) \ 942 ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \ 943 goto rtattr_failure; \ 944 __rta_fill(skb, attrtype, attrlen, data); }) 945 946 #define RTA_APPEND(skb, attrlen, data) \ 947 ({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \ 948 goto rtattr_failure; \ 949 memcpy(skb_put(skb, attrlen), data, attrlen); }) 950 951 #define RTA_PUT_NOHDR(skb, attrlen, data) \ 952 ({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \ 953 memset(skb->tail - (RTA_ALIGN(attrlen) - attrlen), 0, \ 954 RTA_ALIGN(attrlen) - attrlen); }) 955 956 #define RTA_PUT_U8(skb, attrtype, value) \ 957 ({ u8 _tmp = (value); \ 958 RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); }) 959 960 #define RTA_PUT_U16(skb, attrtype, value) \ 961 ({ u16 _tmp = (value); \ 962 RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); }) 963 964 #define RTA_PUT_U32(skb, attrtype, value) \ 965 ({ u32 _tmp = (value); \ 966 RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); }) 967 968 #define RTA_PUT_U64(skb, attrtype, value) \ 969 ({ u64 _tmp = (value); \ 970 RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); }) 971 972 #define RTA_PUT_SECS(skb, attrtype, value) \ 973 RTA_PUT_U64(skb, attrtype, (value) / HZ) 974 975 #define RTA_PUT_MSECS(skb, attrtype, value) \ 976 RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value)) 977 978 #define RTA_PUT_STRING(skb, attrtype, value) \ 979 RTA_PUT(skb, attrtype, strlen(value) + 1, value) 980 981 #define RTA_PUT_FLAG(skb, attrtype) \ 982 RTA_PUT(skb, attrtype, 0, NULL); 983 984 #define RTA_NEST(skb, type) \ 985 ({ struct rtattr *__start = (struct rtattr *) (skb)->tail; \ 986 RTA_PUT(skb, type, 0, NULL); \ 987 __start; }) 988 989 #define RTA_NEST_END(skb, start) \ 990 ({ (start)->rta_len = ((skb)->tail - (unsigned char *) (start)); \ 991 (skb)->len; }) 992 993 #define RTA_NEST_CANCEL(skb, start) \ 994 ({ if (start) \ 995 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \ 996 -1; }) 997 998 #define RTA_GET_U8(rta) \ 999 ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \ 1000 goto rtattr_failure; \ 1001 *(u8 *) RTA_DATA(rta); }) 1002 1003 #define RTA_GET_U16(rta) \ 1004 ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \ 1005 goto rtattr_failure; \ 1006 *(u16 *) RTA_DATA(rta); }) 1007 1008 #define RTA_GET_U32(rta) \ 1009 ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \ 1010 goto rtattr_failure; \ 1011 *(u32 *) RTA_DATA(rta); }) 1012 1013 #define RTA_GET_U64(rta) \ 1014 ({ u64 _tmp; \ 1015 if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \ 1016 goto rtattr_failure; \ 1017 memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \ 1018 _tmp; }) 1019 1020 #define RTA_GET_FLAG(rta) (!!(rta)) 1021 1022 #define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ) 1023 #define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta))) 1024 1025 static inline struct rtattr * 1026 __rta_reserve(struct sk_buff *skb, int attrtype, int attrlen) 1027 { 1028 struct rtattr *rta; 1029 int size = RTA_LENGTH(attrlen); 1030 1031 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size)); 1032 rta->rta_type = attrtype; 1033 rta->rta_len = size; 1034 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size); 1035 return rta; 1036 } 1037 1038 #define __RTA_PUT(skb, attrtype, attrlen) \ 1039 ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \ 1040 goto rtattr_failure; \ 1041 __rta_reserve(skb, attrtype, attrlen); }) 1042 1043 extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change); 1044 1045 /* RTNL is used as a global lock for all changes to network configuration */ 1046 extern void rtnl_lock(void); 1047 extern void rtnl_unlock(void); 1048 extern int rtnl_trylock(void); 1049 1050 extern void rtnetlink_init(void); 1051 extern void __rtnl_unlock(void); 1052 1053 #define ASSERT_RTNL() do { \ 1054 if (unlikely(rtnl_trylock())) { \ 1055 rtnl_unlock(); \ 1056 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \ 1057 __FILE__, __LINE__); \ 1058 dump_stack(); \ 1059 } \ 1060 } while(0) 1061 1062 #define BUG_TRAP(x) do { \ 1063 if (unlikely(!(x))) { \ 1064 printk(KERN_ERR "KERNEL: assertion (%s) failed at %s (%d)\n", \ 1065 #x, __FILE__ , __LINE__); \ 1066 } \ 1067 } while(0) 1068 1069 #endif /* __KERNEL__ */ 1070 1071 1072 #endif /* __LINUX_RTNETLINK_H */ 1073