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_MAX, 93 #define RTM_MAX RTM_MAX 94 }; 95 96 /* 97 Generic structure for encapsulation of optional route information. 98 It is reminiscent of sockaddr, but with sa_family replaced 99 with attribute type. 100 */ 101 102 struct rtattr 103 { 104 unsigned short rta_len; 105 unsigned short rta_type; 106 }; 107 108 /* Macros to handle rtattributes */ 109 110 #define RTA_ALIGNTO 4 111 #define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) ) 112 #define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \ 113 (rta)->rta_len >= sizeof(struct rtattr) && \ 114 (rta)->rta_len <= (len)) 115 #define RTA_NEXT(rta,attrlen) ((attrlen) -= RTA_ALIGN((rta)->rta_len), \ 116 (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len))) 117 #define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len)) 118 #define RTA_SPACE(len) RTA_ALIGN(RTA_LENGTH(len)) 119 #define RTA_DATA(rta) ((void*)(((char*)(rta)) + RTA_LENGTH(0))) 120 #define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0)) 121 122 123 124 125 /****************************************************************************** 126 * Definitions used in routing table administration. 127 ****/ 128 129 struct rtmsg 130 { 131 unsigned char rtm_family; 132 unsigned char rtm_dst_len; 133 unsigned char rtm_src_len; 134 unsigned char rtm_tos; 135 136 unsigned char rtm_table; /* Routing table id */ 137 unsigned char rtm_protocol; /* Routing protocol; see below */ 138 unsigned char rtm_scope; /* See below */ 139 unsigned char rtm_type; /* See below */ 140 141 unsigned rtm_flags; 142 }; 143 144 /* rtm_type */ 145 146 enum 147 { 148 RTN_UNSPEC, 149 RTN_UNICAST, /* Gateway or direct route */ 150 RTN_LOCAL, /* Accept locally */ 151 RTN_BROADCAST, /* Accept locally as broadcast, 152 send as broadcast */ 153 RTN_ANYCAST, /* Accept locally as broadcast, 154 but send as unicast */ 155 RTN_MULTICAST, /* Multicast route */ 156 RTN_BLACKHOLE, /* Drop */ 157 RTN_UNREACHABLE, /* Destination is unreachable */ 158 RTN_PROHIBIT, /* Administratively prohibited */ 159 RTN_THROW, /* Not in this table */ 160 RTN_NAT, /* Translate this address */ 161 RTN_XRESOLVE, /* Use external resolver */ 162 __RTN_MAX 163 }; 164 165 #define RTN_MAX (__RTN_MAX - 1) 166 167 168 /* rtm_protocol */ 169 170 #define RTPROT_UNSPEC 0 171 #define RTPROT_REDIRECT 1 /* Route installed by ICMP redirects; 172 not used by current IPv4 */ 173 #define RTPROT_KERNEL 2 /* Route installed by kernel */ 174 #define RTPROT_BOOT 3 /* Route installed during boot */ 175 #define RTPROT_STATIC 4 /* Route installed by administrator */ 176 177 /* Values of protocol >= RTPROT_STATIC are not interpreted by kernel; 178 they are just passed from user and back as is. 179 It will be used by hypothetical multiple routing daemons. 180 Note that protocol values should be standardized in order to 181 avoid conflicts. 182 */ 183 184 #define RTPROT_GATED 8 /* Apparently, GateD */ 185 #define RTPROT_RA 9 /* RDISC/ND router advertisements */ 186 #define RTPROT_MRT 10 /* Merit MRT */ 187 #define RTPROT_ZEBRA 11 /* Zebra */ 188 #define RTPROT_BIRD 12 /* BIRD */ 189 #define RTPROT_DNROUTED 13 /* DECnet routing daemon */ 190 #define RTPROT_XORP 14 /* XORP */ 191 192 /* rtm_scope 193 194 Really it is not scope, but sort of distance to the destination. 195 NOWHERE are reserved for not existing destinations, HOST is our 196 local addresses, LINK are destinations, located on directly attached 197 link and UNIVERSE is everywhere in the Universe. 198 199 Intermediate values are also possible f.e. interior routes 200 could be assigned a value between UNIVERSE and LINK. 201 */ 202 203 enum rt_scope_t 204 { 205 RT_SCOPE_UNIVERSE=0, 206 /* User defined values */ 207 RT_SCOPE_SITE=200, 208 RT_SCOPE_LINK=253, 209 RT_SCOPE_HOST=254, 210 RT_SCOPE_NOWHERE=255 211 }; 212 213 /* rtm_flags */ 214 215 #define RTM_F_NOTIFY 0x100 /* Notify user of route change */ 216 #define RTM_F_CLONED 0x200 /* This route is cloned */ 217 #define RTM_F_EQUALIZE 0x400 /* Multipath equalizer: NI */ 218 #define RTM_F_PREFIX 0x800 /* Prefix addresses */ 219 220 /* Reserved table identifiers */ 221 222 enum rt_class_t 223 { 224 RT_TABLE_UNSPEC=0, 225 /* User defined values */ 226 RT_TABLE_DEFAULT=253, 227 RT_TABLE_MAIN=254, 228 RT_TABLE_LOCAL=255, 229 __RT_TABLE_MAX 230 }; 231 #define RT_TABLE_MAX (__RT_TABLE_MAX - 1) 232 233 234 235 /* Routing message attributes */ 236 237 enum rtattr_type_t 238 { 239 RTA_UNSPEC, 240 RTA_DST, 241 RTA_SRC, 242 RTA_IIF, 243 RTA_OIF, 244 RTA_GATEWAY, 245 RTA_PRIORITY, 246 RTA_PREFSRC, 247 RTA_METRICS, 248 RTA_MULTIPATH, 249 RTA_PROTOINFO, 250 RTA_FLOW, 251 RTA_CACHEINFO, 252 RTA_SESSION, 253 RTA_MP_ALGO, 254 __RTA_MAX 255 }; 256 257 #define RTA_MAX (__RTA_MAX - 1) 258 259 #define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg)))) 260 #define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg)) 261 262 /* RTM_MULTIPATH --- array of struct rtnexthop. 263 * 264 * "struct rtnexthop" describes all necessary nexthop information, 265 * i.e. parameters of path to a destination via this nexthop. 266 * 267 * At the moment it is impossible to set different prefsrc, mtu, window 268 * and rtt for different paths from multipath. 269 */ 270 271 struct rtnexthop 272 { 273 unsigned short rtnh_len; 274 unsigned char rtnh_flags; 275 unsigned char rtnh_hops; 276 int rtnh_ifindex; 277 }; 278 279 /* rtnh_flags */ 280 281 #define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */ 282 #define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */ 283 #define RTNH_F_ONLINK 4 /* Gateway is forced on link */ 284 285 /* Macros to handle hexthops */ 286 287 #define RTNH_ALIGNTO 4 288 #define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) ) 289 #define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \ 290 ((int)(rtnh)->rtnh_len) <= (len)) 291 #define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len))) 292 #define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len)) 293 #define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len)) 294 #define RTNH_DATA(rtnh) ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0))) 295 296 /* RTM_CACHEINFO */ 297 298 struct rta_cacheinfo 299 { 300 __u32 rta_clntref; 301 __u32 rta_lastuse; 302 __s32 rta_expires; 303 __u32 rta_error; 304 __u32 rta_used; 305 306 #define RTNETLINK_HAVE_PEERINFO 1 307 __u32 rta_id; 308 __u32 rta_ts; 309 __u32 rta_tsage; 310 }; 311 312 /* RTM_METRICS --- array of struct rtattr with types of RTAX_* */ 313 314 enum 315 { 316 RTAX_UNSPEC, 317 #define RTAX_UNSPEC RTAX_UNSPEC 318 RTAX_LOCK, 319 #define RTAX_LOCK RTAX_LOCK 320 RTAX_MTU, 321 #define RTAX_MTU RTAX_MTU 322 RTAX_WINDOW, 323 #define RTAX_WINDOW RTAX_WINDOW 324 RTAX_RTT, 325 #define RTAX_RTT RTAX_RTT 326 RTAX_RTTVAR, 327 #define RTAX_RTTVAR RTAX_RTTVAR 328 RTAX_SSTHRESH, 329 #define RTAX_SSTHRESH RTAX_SSTHRESH 330 RTAX_CWND, 331 #define RTAX_CWND RTAX_CWND 332 RTAX_ADVMSS, 333 #define RTAX_ADVMSS RTAX_ADVMSS 334 RTAX_REORDERING, 335 #define RTAX_REORDERING RTAX_REORDERING 336 RTAX_HOPLIMIT, 337 #define RTAX_HOPLIMIT RTAX_HOPLIMIT 338 RTAX_INITCWND, 339 #define RTAX_INITCWND RTAX_INITCWND 340 RTAX_FEATURES, 341 #define RTAX_FEATURES RTAX_FEATURES 342 __RTAX_MAX 343 }; 344 345 #define RTAX_MAX (__RTAX_MAX - 1) 346 347 #define RTAX_FEATURE_ECN 0x00000001 348 #define RTAX_FEATURE_SACK 0x00000002 349 #define RTAX_FEATURE_TIMESTAMP 0x00000004 350 #define RTAX_FEATURE_ALLFRAG 0x00000008 351 352 struct rta_session 353 { 354 __u8 proto; 355 356 union { 357 struct { 358 __u16 sport; 359 __u16 dport; 360 } ports; 361 362 struct { 363 __u8 type; 364 __u8 code; 365 __u16 ident; 366 } icmpt; 367 368 __u32 spi; 369 } u; 370 }; 371 372 373 /********************************************************* 374 * Interface address. 375 ****/ 376 377 struct ifaddrmsg 378 { 379 unsigned char ifa_family; 380 unsigned char ifa_prefixlen; /* The prefix length */ 381 unsigned char ifa_flags; /* Flags */ 382 unsigned char ifa_scope; /* See above */ 383 int ifa_index; /* Link index */ 384 }; 385 386 enum 387 { 388 IFA_UNSPEC, 389 IFA_ADDRESS, 390 IFA_LOCAL, 391 IFA_LABEL, 392 IFA_BROADCAST, 393 IFA_ANYCAST, 394 IFA_CACHEINFO, 395 IFA_MULTICAST, 396 __IFA_MAX 397 }; 398 399 #define IFA_MAX (__IFA_MAX - 1) 400 401 /* ifa_flags */ 402 403 #define IFA_F_SECONDARY 0x01 404 #define IFA_F_TEMPORARY IFA_F_SECONDARY 405 406 #define IFA_F_DEPRECATED 0x20 407 #define IFA_F_TENTATIVE 0x40 408 #define IFA_F_PERMANENT 0x80 409 410 struct ifa_cacheinfo 411 { 412 __u32 ifa_prefered; 413 __u32 ifa_valid; 414 __u32 cstamp; /* created timestamp, hundredths of seconds */ 415 __u32 tstamp; /* updated timestamp, hundredths of seconds */ 416 }; 417 418 419 #define IFA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifaddrmsg)))) 420 #define IFA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifaddrmsg)) 421 422 /* 423 Important comment: 424 IFA_ADDRESS is prefix address, rather than local interface address. 425 It makes no difference for normally configured broadcast interfaces, 426 but for point-to-point IFA_ADDRESS is DESTINATION address, 427 local address is supplied in IFA_LOCAL attribute. 428 */ 429 430 /************************************************************** 431 * Neighbour discovery. 432 ****/ 433 434 struct ndmsg 435 { 436 unsigned char ndm_family; 437 unsigned char ndm_pad1; 438 unsigned short ndm_pad2; 439 int ndm_ifindex; /* Link index */ 440 __u16 ndm_state; 441 __u8 ndm_flags; 442 __u8 ndm_type; 443 }; 444 445 enum 446 { 447 NDA_UNSPEC, 448 NDA_DST, 449 NDA_LLADDR, 450 NDA_CACHEINFO, 451 NDA_PROBES, 452 __NDA_MAX 453 }; 454 455 #define NDA_MAX (__NDA_MAX - 1) 456 457 #define NDA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ndmsg)))) 458 #define NDA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ndmsg)) 459 460 /* 461 * Neighbor Cache Entry Flags 462 */ 463 464 #define NTF_PROXY 0x08 /* == ATF_PUBL */ 465 #define NTF_ROUTER 0x80 466 467 /* 468 * Neighbor Cache Entry States. 469 */ 470 471 #define NUD_INCOMPLETE 0x01 472 #define NUD_REACHABLE 0x02 473 #define NUD_STALE 0x04 474 #define NUD_DELAY 0x08 475 #define NUD_PROBE 0x10 476 #define NUD_FAILED 0x20 477 478 /* Dummy states */ 479 #define NUD_NOARP 0x40 480 #define NUD_PERMANENT 0x80 481 #define NUD_NONE 0x00 482 483 484 struct nda_cacheinfo 485 { 486 __u32 ndm_confirmed; 487 __u32 ndm_used; 488 __u32 ndm_updated; 489 __u32 ndm_refcnt; 490 }; 491 492 /**** 493 * General form of address family dependent message. 494 ****/ 495 496 struct rtgenmsg 497 { 498 unsigned char rtgen_family; 499 }; 500 501 /***************************************************************** 502 * Link layer specific messages. 503 ****/ 504 505 /* struct ifinfomsg 506 * passes link level specific information, not dependent 507 * on network protocol. 508 */ 509 510 struct ifinfomsg 511 { 512 unsigned char ifi_family; 513 unsigned char __ifi_pad; 514 unsigned short ifi_type; /* ARPHRD_* */ 515 int ifi_index; /* Link index */ 516 unsigned ifi_flags; /* IFF_* flags */ 517 unsigned ifi_change; /* IFF_* change mask */ 518 }; 519 520 /******************************************************************** 521 * prefix information 522 ****/ 523 524 struct prefixmsg 525 { 526 unsigned char prefix_family; 527 int prefix_ifindex; 528 unsigned char prefix_type; 529 unsigned char prefix_len; 530 unsigned char prefix_flags; 531 }; 532 533 enum 534 { 535 PREFIX_UNSPEC, 536 PREFIX_ADDRESS, 537 PREFIX_CACHEINFO, 538 __PREFIX_MAX 539 }; 540 541 #define PREFIX_MAX (__PREFIX_MAX - 1) 542 543 struct prefix_cacheinfo 544 { 545 __u32 preferred_time; 546 __u32 valid_time; 547 }; 548 549 /* The struct should be in sync with struct net_device_stats */ 550 struct rtnl_link_stats 551 { 552 __u32 rx_packets; /* total packets received */ 553 __u32 tx_packets; /* total packets transmitted */ 554 __u32 rx_bytes; /* total bytes received */ 555 __u32 tx_bytes; /* total bytes transmitted */ 556 __u32 rx_errors; /* bad packets received */ 557 __u32 tx_errors; /* packet transmit problems */ 558 __u32 rx_dropped; /* no space in linux buffers */ 559 __u32 tx_dropped; /* no space available in linux */ 560 __u32 multicast; /* multicast packets received */ 561 __u32 collisions; 562 563 /* detailed rx_errors: */ 564 __u32 rx_length_errors; 565 __u32 rx_over_errors; /* receiver ring buff overflow */ 566 __u32 rx_crc_errors; /* recved pkt with crc error */ 567 __u32 rx_frame_errors; /* recv'd frame alignment error */ 568 __u32 rx_fifo_errors; /* recv'r fifo overrun */ 569 __u32 rx_missed_errors; /* receiver missed packet */ 570 571 /* detailed tx_errors */ 572 __u32 tx_aborted_errors; 573 __u32 tx_carrier_errors; 574 __u32 tx_fifo_errors; 575 __u32 tx_heartbeat_errors; 576 __u32 tx_window_errors; 577 578 /* for cslip etc */ 579 __u32 rx_compressed; 580 __u32 tx_compressed; 581 }; 582 583 /* The struct should be in sync with struct ifmap */ 584 struct rtnl_link_ifmap 585 { 586 __u64 mem_start; 587 __u64 mem_end; 588 __u64 base_addr; 589 __u16 irq; 590 __u8 dma; 591 __u8 port; 592 }; 593 594 enum 595 { 596 IFLA_UNSPEC, 597 IFLA_ADDRESS, 598 IFLA_BROADCAST, 599 IFLA_IFNAME, 600 IFLA_MTU, 601 IFLA_LINK, 602 IFLA_QDISC, 603 IFLA_STATS, 604 IFLA_COST, 605 #define IFLA_COST IFLA_COST 606 IFLA_PRIORITY, 607 #define IFLA_PRIORITY IFLA_PRIORITY 608 IFLA_MASTER, 609 #define IFLA_MASTER IFLA_MASTER 610 IFLA_WIRELESS, /* Wireless Extension event - see wireless.h */ 611 #define IFLA_WIRELESS IFLA_WIRELESS 612 IFLA_PROTINFO, /* Protocol specific information for a link */ 613 #define IFLA_PROTINFO IFLA_PROTINFO 614 IFLA_TXQLEN, 615 #define IFLA_TXQLEN IFLA_TXQLEN 616 IFLA_MAP, 617 #define IFLA_MAP IFLA_MAP 618 IFLA_WEIGHT, 619 #define IFLA_WEIGHT IFLA_WEIGHT 620 __IFLA_MAX 621 }; 622 623 624 #define IFLA_MAX (__IFLA_MAX - 1) 625 626 #define IFLA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct ifinfomsg)))) 627 #define IFLA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct ifinfomsg)) 628 629 /* ifi_flags. 630 631 IFF_* flags. 632 633 The only change is: 634 IFF_LOOPBACK, IFF_BROADCAST and IFF_POINTOPOINT are 635 more not changeable by user. They describe link media 636 characteristics and set by device driver. 637 638 Comments: 639 - Combination IFF_BROADCAST|IFF_POINTOPOINT is invalid 640 - If neither of these three flags are set; 641 the interface is NBMA. 642 643 - IFF_MULTICAST does not mean anything special: 644 multicasts can be used on all not-NBMA links. 645 IFF_MULTICAST means that this media uses special encapsulation 646 for multicast frames. Apparently, all IFF_POINTOPOINT and 647 IFF_BROADCAST devices are able to use multicasts too. 648 */ 649 650 /* IFLA_LINK. 651 For usual devices it is equal ifi_index. 652 If it is a "virtual interface" (f.e. tunnel), ifi_link 653 can point to real physical interface (f.e. for bandwidth calculations), 654 or maybe 0, what means, that real media is unknown (usual 655 for IPIP tunnels, when route to endpoint is allowed to change) 656 */ 657 658 /* Subtype attributes for IFLA_PROTINFO */ 659 enum 660 { 661 IFLA_INET6_UNSPEC, 662 IFLA_INET6_FLAGS, /* link flags */ 663 IFLA_INET6_CONF, /* sysctl parameters */ 664 IFLA_INET6_STATS, /* statistics */ 665 IFLA_INET6_MCAST, /* MC things. What of them? */ 666 IFLA_INET6_CACHEINFO, /* time values and max reasm size */ 667 __IFLA_INET6_MAX 668 }; 669 670 #define IFLA_INET6_MAX (__IFLA_INET6_MAX - 1) 671 672 struct ifla_cacheinfo 673 { 674 __u32 max_reasm_len; 675 __u32 tstamp; /* ipv6InterfaceTable updated timestamp */ 676 __u32 reachable_time; 677 __u32 retrans_time; 678 }; 679 680 /***************************************************************** 681 * Traffic control messages. 682 ****/ 683 684 struct tcmsg 685 { 686 unsigned char tcm_family; 687 unsigned char tcm__pad1; 688 unsigned short tcm__pad2; 689 int tcm_ifindex; 690 __u32 tcm_handle; 691 __u32 tcm_parent; 692 __u32 tcm_info; 693 }; 694 695 enum 696 { 697 TCA_UNSPEC, 698 TCA_KIND, 699 TCA_OPTIONS, 700 TCA_STATS, 701 TCA_XSTATS, 702 TCA_RATE, 703 TCA_FCNT, 704 TCA_STATS2, 705 __TCA_MAX 706 }; 707 708 #define TCA_MAX (__TCA_MAX - 1) 709 710 #define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg)))) 711 #define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg)) 712 713 714 /* RTnetlink multicast groups */ 715 716 #define RTMGRP_LINK 1 717 #define RTMGRP_NOTIFY 2 718 #define RTMGRP_NEIGH 4 719 #define RTMGRP_TC 8 720 721 #define RTMGRP_IPV4_IFADDR 0x10 722 #define RTMGRP_IPV4_MROUTE 0x20 723 #define RTMGRP_IPV4_ROUTE 0x40 724 725 #define RTMGRP_IPV6_IFADDR 0x100 726 #define RTMGRP_IPV6_MROUTE 0x200 727 #define RTMGRP_IPV6_ROUTE 0x400 728 #define RTMGRP_IPV6_IFINFO 0x800 729 730 #define RTMGRP_DECnet_IFADDR 0x1000 731 #define RTMGRP_DECnet_ROUTE 0x4000 732 733 #define RTMGRP_IPV6_PREFIX 0x20000 734 735 /* TC action piece */ 736 struct tcamsg 737 { 738 unsigned char tca_family; 739 unsigned char tca__pad1; 740 unsigned short tca__pad2; 741 }; 742 #define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg)))) 743 #define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg)) 744 #define TCA_ACT_TAB 1 /* attr type must be >=1 */ 745 #define TCAA_MAX 1 746 747 /* End of information exported to user level */ 748 749 #ifdef __KERNEL__ 750 751 #include <linux/config.h> 752 753 extern size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size); 754 static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str) 755 { 756 int len = strlen(str) + 1; 757 return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len); 758 } 759 760 extern int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len); 761 762 #define rtattr_parse_nested(tb, max, rta) \ 763 rtattr_parse((tb), (max), RTA_DATA((rta)), RTA_PAYLOAD((rta))) 764 765 extern struct sock *rtnl; 766 767 struct rtnetlink_link 768 { 769 int (*doit)(struct sk_buff *, struct nlmsghdr*, void *attr); 770 int (*dumpit)(struct sk_buff *, struct netlink_callback *cb); 771 }; 772 773 extern struct rtnetlink_link * rtnetlink_links[NPROTO]; 774 extern int rtnetlink_send(struct sk_buff *skb, u32 pid, u32 group, int echo); 775 extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics); 776 777 extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data); 778 779 #define RTA_PUT(skb, attrtype, attrlen, data) \ 780 ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \ 781 goto rtattr_failure; \ 782 __rta_fill(skb, attrtype, attrlen, data); }) 783 784 #define RTA_PUT_NOHDR(skb, attrlen, data) \ 785 ({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \ 786 goto rtattr_failure; \ 787 memcpy(skb_put(skb, RTA_ALIGN(attrlen)), data, attrlen); }) 788 789 static inline struct rtattr * 790 __rta_reserve(struct sk_buff *skb, int attrtype, int attrlen) 791 { 792 struct rtattr *rta; 793 int size = RTA_LENGTH(attrlen); 794 795 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size)); 796 rta->rta_type = attrtype; 797 rta->rta_len = size; 798 return rta; 799 } 800 801 #define __RTA_PUT(skb, attrtype, attrlen) \ 802 ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \ 803 goto rtattr_failure; \ 804 __rta_reserve(skb, attrtype, attrlen); }) 805 806 extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change); 807 808 extern struct semaphore rtnl_sem; 809 810 #define rtnl_shlock() down(&rtnl_sem) 811 #define rtnl_shlock_nowait() down_trylock(&rtnl_sem) 812 813 #define rtnl_shunlock() do { up(&rtnl_sem); \ 814 if (rtnl && rtnl->sk_receive_queue.qlen) \ 815 rtnl->sk_data_ready(rtnl, 0); \ 816 } while(0) 817 818 extern void rtnl_lock(void); 819 extern int rtnl_lock_interruptible(void); 820 extern void rtnl_unlock(void); 821 extern void rtnetlink_init(void); 822 823 #define ASSERT_RTNL() do { \ 824 if (unlikely(down_trylock(&rtnl_sem) == 0)) { \ 825 up(&rtnl_sem); \ 826 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \ 827 __FILE__, __LINE__); \ 828 dump_stack(); \ 829 } \ 830 } while(0) 831 832 #define BUG_TRAP(x) do { \ 833 if (unlikely(!(x))) { \ 834 printk(KERN_ERR "KERNEL: assertion (%s) failed at %s (%d)\n", \ 835 #x, __FILE__ , __LINE__); \ 836 } \ 837 } while(0) 838 839 #endif /* __KERNEL__ */ 840 841 842 #endif /* __LINUX_RTNETLINK_H */ 843