include/linux/rtnetlink.h

   1 #ifndef __LINUX_RTNETLINK_H
   2 #define __LINUX_RTNETLINK_H
   3
   4 #include <linux/netlink.h>
   5 #include <linux/if_link.h>
   6 #include <linux/if_addr.h>
   7 #include <linux/neighbour.h>
   8
   9 /****
  10  *              Routing/neighbour discovery messages.
  11  ****/
  12
  13 /* Types of messages */
  14
  15 enum {
  16         RTM_BASE        = 16,
  17 #define RTM_BASE        RTM_BASE
  18
  19         RTM_NEWLINK     = 16,
  20 #define RTM_NEWLINK     RTM_NEWLINK
  21         RTM_DELLINK,
  22 #define RTM_DELLINK     RTM_DELLINK
  23         RTM_GETLINK,
  24 #define RTM_GETLINK     RTM_GETLINK
  25         RTM_SETLINK,
  26 #define RTM_SETLINK     RTM_SETLINK
  27
  28         RTM_NEWADDR     = 20,
  29 #define RTM_NEWADDR     RTM_NEWADDR
  30         RTM_DELADDR,
  31 #define RTM_DELADDR     RTM_DELADDR
  32         RTM_GETADDR,
  33 #define RTM_GETADDR     RTM_GETADDR
  34
  35         RTM_NEWROUTE    = 24,
  36 #define RTM_NEWROUTE    RTM_NEWROUTE
  37         RTM_DELROUTE,
  38 #define RTM_DELROUTE    RTM_DELROUTE
  39         RTM_GETROUTE,
  40 #define RTM_GETROUTE    RTM_GETROUTE
  41
  42         RTM_NEWNEIGH    = 28,
  43 #define RTM_NEWNEIGH    RTM_NEWNEIGH
  44         RTM_DELNEIGH,
  45 #define RTM_DELNEIGH    RTM_DELNEIGH
  46         RTM_GETNEIGH,
  47 #define RTM_GETNEIGH    RTM_GETNEIGH
  48
  49         RTM_NEWRULE     = 32,
  50 #define RTM_NEWRULE     RTM_NEWRULE
  51         RTM_DELRULE,
  52 #define RTM_DELRULE     RTM_DELRULE
  53         RTM_GETRULE,
  54 #define RTM_GETRULE     RTM_GETRULE
  55
  56         RTM_NEWQDISC    = 36,
  57 #define RTM_NEWQDISC    RTM_NEWQDISC
  58         RTM_DELQDISC,
  59 #define RTM_DELQDISC    RTM_DELQDISC
  60         RTM_GETQDISC,
  61 #define RTM_GETQDISC    RTM_GETQDISC
  62
  63         RTM_NEWTCLASS   = 40,
  64 #define RTM_NEWTCLASS   RTM_NEWTCLASS
  65         RTM_DELTCLASS,
  66 #define RTM_DELTCLASS   RTM_DELTCLASS
  67         RTM_GETTCLASS,
  68 #define RTM_GETTCLASS   RTM_GETTCLASS
  69
  70         RTM_NEWTFILTER  = 44,
  71 #define RTM_NEWTFILTER  RTM_NEWTFILTER
  72         RTM_DELTFILTER,
  73 #define RTM_DELTFILTER  RTM_DELTFILTER
  74         RTM_GETTFILTER,
  75 #define RTM_GETTFILTER  RTM_GETTFILTER
  76
  77         RTM_NEWACTION   = 48,
  78 #define RTM_NEWACTION   RTM_NEWACTION
  79         RTM_DELACTION,
  80 #define RTM_DELACTION   RTM_DELACTION
  81         RTM_GETACTION,
  82 #define RTM_GETACTION   RTM_GETACTION
  83
  84         RTM_NEWPREFIX   = 52,
  85 #define RTM_NEWPREFIX   RTM_NEWPREFIX
  86
  87         RTM_GETMULTICAST = 58,
  88 #define RTM_GETMULTICAST RTM_GETMULTICAST
  89
  90         RTM_GETANYCAST  = 62,
  91 #define RTM_GETANYCAST  RTM_GETANYCAST
  92
  93         RTM_NEWNEIGHTBL = 64,
  94 #define RTM_NEWNEIGHTBL RTM_NEWNEIGHTBL
  95         RTM_GETNEIGHTBL = 66,
  96 #define RTM_GETNEIGHTBL RTM_GETNEIGHTBL
  97         RTM_SETNEIGHTBL,
  98 #define RTM_SETNEIGHTBL RTM_SETNEIGHTBL
  99
 100         RTM_NEWNDUSEROPT = 68,
 101 #define RTM_NEWNDUSEROPT RTM_NEWNDUSEROPT
 102
 103         RTM_NEWADDRLABEL = 72,
 104 #define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
 105         RTM_DELADDRLABEL,
 106 #define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
 107         RTM_GETADDRLABEL,
 108 #define RTM_GETADDRLABEL RTM_GETADDRLABEL
 109
 110         RTM_GETDCB = 78,
 111 #define RTM_GETDCB RTM_GETDCB
 112         RTM_SETDCB,
 113 #define RTM_SETDCB RTM_SETDCB
 114
 115         __RTM_MAX,
 116 #define RTM_MAX         (((__RTM_MAX + 3) & ~3) - 1)
 117 };
 118
 119 #define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
 120 #define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
 121 #define RTM_FAM(cmd)    (((cmd) - RTM_BASE) >> 2)
 122
 123 /*
 124    Generic structure for encapsulation of optional route information.
 125    It is reminiscent of sockaddr, but with sa_family replaced
 126    with attribute type.
 127  */
 128
 129 struct rtattr
 130 {
 131         unsigned short  rta_len;
 132         unsigned short  rta_type;
 133 };
 134
 135 /* Macros to handle rtattributes */
 136
 137 #define RTA_ALIGNTO     4
 138 #define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) )
 139 #define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \
 140                          (rta)->rta_len >= sizeof(struct rtattr) && \
 141                          (rta)->rta_len <= (len))
 142 #define RTA_NEXT(rta,attrlen)   ((attrlen) -= RTA_ALIGN((rta)->rta_len), \
 143                                  (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len)))
 144 #define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
 145 #define RTA_SPACE(len)  RTA_ALIGN(RTA_LENGTH(len))
 146 #define RTA_DATA(rta)   ((void*)(((char*)(rta)) + RTA_LENGTH(0)))
 147 #define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
 148
 149
 150
 151
 152 /******************************************************************************
 153  *              Definitions used in routing table administration.
 154  ****/
 155
 156 struct rtmsg
 157 {
 158         unsigned char           rtm_family;
 159         unsigned char           rtm_dst_len;
 160         unsigned char           rtm_src_len;
 161         unsigned char           rtm_tos;
 162
 163         unsigned char           rtm_table;      /* Routing table id */
 164         unsigned char           rtm_protocol;   /* Routing protocol; see below  */
 165         unsigned char           rtm_scope;      /* See below */
 166         unsigned char           rtm_type;       /* See below    */
 167
 168         unsigned                rtm_flags;
 169 };
 170
 171 /* rtm_type */
 172
 173 enum
 174 {
 175         RTN_UNSPEC,
 176         RTN_UNICAST,            /* Gateway or direct route      */
 177         RTN_LOCAL,              /* Accept locally               */
 178         RTN_BROADCAST,          /* Accept locally as broadcast,
 179                                    send as broadcast */
 180         RTN_ANYCAST,            /* Accept locally as broadcast,
 181                                    but send as unicast */
 182         RTN_MULTICAST,          /* Multicast route              */
 183         RTN_BLACKHOLE,          /* Drop                         */
 184         RTN_UNREACHABLE,        /* Destination is unreachable   */
 185         RTN_PROHIBIT,           /* Administratively prohibited  */
 186         RTN_THROW,              /* Not in this table            */
 187         RTN_NAT,                /* Translate this address       */
 188         RTN_XRESOLVE,           /* Use external resolver        */
 189         __RTN_MAX
 190 };
 191
 192 #define RTN_MAX (__RTN_MAX - 1)
 193
 194
 195 /* rtm_protocol */
 196
 197 #define RTPROT_UNSPEC   0
 198 #define RTPROT_REDIRECT 1       /* Route installed by ICMP redirects;
 199                                    not used by current IPv4 */
 200 #define RTPROT_KERNEL   2       /* Route installed by kernel            */
 201 #define RTPROT_BOOT     3       /* Route installed during boot          */
 202 #define RTPROT_STATIC   4       /* Route installed by administrator     */
 203
 204 /* Values of protocol >= RTPROT_STATIC are not interpreted by kernel;
 205    they are just passed from user and back as is.
 206    It will be used by hypothetical multiple routing daemons.
 207    Note that protocol values should be standardized in order to
 208    avoid conflicts.
 209  */
 210
 211 #define RTPROT_GATED    8       /* Apparently, GateD */
 212 #define RTPROT_RA       9       /* RDISC/ND router advertisements */
 213 #define RTPROT_MRT      10      /* Merit MRT */
 214 #define RTPROT_ZEBRA    11      /* Zebra */
 215 #define RTPROT_BIRD     12      /* BIRD */
 216 #define RTPROT_DNROUTED 13      /* DECnet routing daemon */
 217 #define RTPROT_XORP     14      /* XORP */
 218 #define RTPROT_NTK      15      /* Netsukuku */
 219
 220 /* rtm_scope
 221
 222    Really it is not scope, but sort of distance to the destination.
 223    NOWHERE are reserved for not existing destinations, HOST is our
 224    local addresses, LINK are destinations, located on directly attached
 225    link and UNIVERSE is everywhere in the Universe.
 226
 227    Intermediate values are also possible f.e. interior routes
 228    could be assigned a value between UNIVERSE and LINK.
 229 */
 230
 231 enum rt_scope_t
 232 {
 233         RT_SCOPE_UNIVERSE=0,
 234 /* User defined values  */
 235         RT_SCOPE_SITE=200,
 236         RT_SCOPE_LINK=253,
 237         RT_SCOPE_HOST=254,
 238         RT_SCOPE_NOWHERE=255
 239 };
 240
 241 /* rtm_flags */
 242
 243 #define RTM_F_NOTIFY            0x100   /* Notify user of route change  */
 244 #define RTM_F_CLONED            0x200   /* This route is cloned         */
 245 #define RTM_F_EQUALIZE          0x400   /* Multipath equalizer: NI      */
 246 #define RTM_F_PREFIX            0x800   /* Prefix addresses             */
 247
 248 /* Reserved table identifiers */
 249
 250 enum rt_class_t
 251 {
 252         RT_TABLE_UNSPEC=0,
 253 /* User defined values */
 254         RT_TABLE_COMPAT=252,
 255         RT_TABLE_DEFAULT=253,
 256         RT_TABLE_MAIN=254,
 257         RT_TABLE_LOCAL=255,
 258         RT_TABLE_MAX=0xFFFFFFFF
 259 };
 260
 261
 262 /* Routing message attributes */
 263
 264 enum rtattr_type_t
 265 {
 266         RTA_UNSPEC,
 267         RTA_DST,
 268         RTA_SRC,
 269         RTA_IIF,
 270         RTA_OIF,
 271         RTA_GATEWAY,
 272         RTA_PRIORITY,
 273         RTA_PREFSRC,
 274         RTA_METRICS,
 275         RTA_MULTIPATH,
 276         RTA_PROTOINFO, /* no longer used */
 277         RTA_FLOW,
 278         RTA_CACHEINFO,
 279         RTA_SESSION, /* no longer used */
 280         RTA_MP_ALGO, /* no longer used */
 281         RTA_TABLE,
 282         __RTA_MAX
 283 };
 284
 285 #define RTA_MAX (__RTA_MAX - 1)
 286
 287 #define RTM_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
 288 #define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
 289
 290 /* RTM_MULTIPATH --- array of struct rtnexthop.
 291  *
 292  * "struct rtnexthop" describes all necessary nexthop information,
 293  * i.e. parameters of path to a destination via this nexthop.
 294  *
 295  * At the moment it is impossible to set different prefsrc, mtu, window
 296  * and rtt for different paths from multipath.
 297  */
 298
 299 struct rtnexthop
 300 {
 301         unsigned short          rtnh_len;
 302         unsigned char           rtnh_flags;
 303         unsigned char           rtnh_hops;
 304         int                     rtnh_ifindex;
 305 };
 306
 307 /* rtnh_flags */
 308
 309 #define RTNH_F_DEAD             1       /* Nexthop is dead (used by multipath)  */
 310 #define RTNH_F_PERVASIVE        2       /* Do recursive gateway lookup  */
 311 #define RTNH_F_ONLINK           4       /* Gateway is forced on link    */
 312
 313 /* Macros to handle hexthops */
 314
 315 #define RTNH_ALIGNTO    4
 316 #define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
 317 #define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
 318                            ((int)(rtnh)->rtnh_len) <= (len))
 319 #define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
 320 #define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
 321 #define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
 322 #define RTNH_DATA(rtnh)   ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
 323
 324 /* RTM_CACHEINFO */
 325
 326 struct rta_cacheinfo
 327 {
 328         __u32   rta_clntref;
 329         __u32   rta_lastuse;
 330         __s32   rta_expires;
 331         __u32   rta_error;
 332         __u32   rta_used;
 333
 334 #define RTNETLINK_HAVE_PEERINFO 1
 335         __u32   rta_id;
 336         __u32   rta_ts;
 337         __u32   rta_tsage;
 338 };
 339
 340 /* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
 341
 342 enum
 343 {
 344         RTAX_UNSPEC,
 345 #define RTAX_UNSPEC RTAX_UNSPEC
 346         RTAX_LOCK,
 347 #define RTAX_LOCK RTAX_LOCK
 348         RTAX_MTU,
 349 #define RTAX_MTU RTAX_MTU
 350         RTAX_WINDOW,
 351 #define RTAX_WINDOW RTAX_WINDOW
 352         RTAX_RTT,
 353 #define RTAX_RTT RTAX_RTT
 354         RTAX_RTTVAR,
 355 #define RTAX_RTTVAR RTAX_RTTVAR
 356         RTAX_SSTHRESH,
 357 #define RTAX_SSTHRESH RTAX_SSTHRESH
 358         RTAX_CWND,
 359 #define RTAX_CWND RTAX_CWND
 360         RTAX_ADVMSS,
 361 #define RTAX_ADVMSS RTAX_ADVMSS
 362         RTAX_REORDERING,
 363 #define RTAX_REORDERING RTAX_REORDERING
 364         RTAX_HOPLIMIT,
 365 #define RTAX_HOPLIMIT RTAX_HOPLIMIT
 366         RTAX_INITCWND,
 367 #define RTAX_INITCWND RTAX_INITCWND
 368         RTAX_FEATURES,
 369 #define RTAX_FEATURES RTAX_FEATURES
 370         RTAX_RTO_MIN,
 371 #define RTAX_RTO_MIN RTAX_RTO_MIN
 372         __RTAX_MAX
 373 };
 374
 375 #define RTAX_MAX (__RTAX_MAX - 1)
 376
 377 #define RTAX_FEATURE_ECN        0x00000001
 378 #define RTAX_FEATURE_SACK       0x00000002
 379 #define RTAX_FEATURE_TIMESTAMP  0x00000004
 380 #define RTAX_FEATURE_ALLFRAG    0x00000008
 381
 382 struct rta_session
 383 {
 384         __u8    proto;
 385         __u8    pad1;
 386         __u16   pad2;
 387
 388         union {
 389                 struct {
 390                         __u16   sport;
 391                         __u16   dport;
 392                 } ports;
 393
 394                 struct {
 395                         __u8    type;
 396                         __u8    code;
 397                         __u16   ident;
 398                 } icmpt;
 399
 400                 __u32           spi;
 401         } u;
 402 };
 403
 404 /****
 405  *              General form of address family dependent message.
 406  ****/
 407
 408 struct rtgenmsg
 409 {
 410         unsigned char           rtgen_family;
 411 };
 412
 413 /*****************************************************************
 414  *              Link layer specific messages.
 415  ****/
 416
 417 /* struct ifinfomsg
 418  * passes link level specific information, not dependent
 419  * on network protocol.
 420  */
 421
 422 struct ifinfomsg
 423 {
 424         unsigned char   ifi_family;
 425         unsigned char   __ifi_pad;
 426         unsigned short  ifi_type;               /* ARPHRD_* */
 427         int             ifi_index;              /* Link index   */
 428         unsigned        ifi_flags;              /* IFF_* flags  */
 429         unsigned        ifi_change;             /* IFF_* change mask */
 430 };
 431
 432 /********************************************************************
 433  *              prefix information
 434  ****/
 435
 436 struct prefixmsg
 437 {
 438         unsigned char   prefix_family;
 439         unsigned char   prefix_pad1;
 440         unsigned short  prefix_pad2;
 441         int             prefix_ifindex;
 442         unsigned char   prefix_type;
 443         unsigned char   prefix_len;
 444         unsigned char   prefix_flags;
 445         unsigned char   prefix_pad3;
 446 };
 447
 448 enum
 449 {
 450         PREFIX_UNSPEC,
 451         PREFIX_ADDRESS,
 452         PREFIX_CACHEINFO,
 453         __PREFIX_MAX
 454 };
 455
 456 #define PREFIX_MAX      (__PREFIX_MAX - 1)
 457
 458 struct prefix_cacheinfo
 459 {
 460         __u32   preferred_time;
 461         __u32   valid_time;
 462 };
 463
 464
 465 /*****************************************************************
 466  *              Traffic control messages.
 467  ****/
 468
 469 struct tcmsg
 470 {
 471         unsigned char   tcm_family;
 472         unsigned char   tcm__pad1;
 473         unsigned short  tcm__pad2;
 474         int             tcm_ifindex;
 475         __u32           tcm_handle;
 476         __u32           tcm_parent;
 477         __u32           tcm_info;
 478 };
 479
 480 enum
 481 {
 482         TCA_UNSPEC,
 483         TCA_KIND,
 484         TCA_OPTIONS,
 485         TCA_STATS,
 486         TCA_XSTATS,
 487         TCA_RATE,
 488         TCA_FCNT,
 489         TCA_STATS2,
 490         TCA_STAB,
 491         __TCA_MAX
 492 };
 493
 494 #define TCA_MAX (__TCA_MAX - 1)
 495
 496 #define TCA_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
 497 #define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
 498
 499 /********************************************************************
 500  *              Neighbor Discovery userland options
 501  ****/
 502
 503 struct nduseroptmsg
 504 {
 505         unsigned char   nduseropt_family;
 506         unsigned char   nduseropt_pad1;
 507         unsigned short  nduseropt_opts_len;     /* Total length of options */
 508         int             nduseropt_ifindex;
 509         __u8            nduseropt_icmp_type;
 510         __u8            nduseropt_icmp_code;
 511         unsigned short  nduseropt_pad2;
 512         unsigned int    nduseropt_pad3;
 513         /* Followed by one or more ND options */
 514 };
 515
 516 enum
 517 {
 518         NDUSEROPT_UNSPEC,
 519         NDUSEROPT_SRCADDR,
 520         __NDUSEROPT_MAX
 521 };
 522
 523 #define NDUSEROPT_MAX   (__NDUSEROPT_MAX - 1)
 524
 525 #ifndef __KERNEL__
 526 /* RTnetlink multicast groups - backwards compatibility for userspace */
 527 #define RTMGRP_LINK             1
 528 #define RTMGRP_NOTIFY           2
 529 #define RTMGRP_NEIGH            4
 530 #define RTMGRP_TC               8
 531
 532 #define RTMGRP_IPV4_IFADDR      0x10
 533 #define RTMGRP_IPV4_MROUTE      0x20
 534 #define RTMGRP_IPV4_ROUTE       0x40
 535 #define RTMGRP_IPV4_RULE        0x80
 536
 537 #define RTMGRP_IPV6_IFADDR      0x100
 538 #define RTMGRP_IPV6_MROUTE      0x200
 539 #define RTMGRP_IPV6_ROUTE       0x400
 540 #define RTMGRP_IPV6_IFINFO      0x800
 541
 542 #define RTMGRP_DECnet_IFADDR    0x1000
 543 #define RTMGRP_DECnet_ROUTE     0x4000
 544
 545 #define RTMGRP_IPV6_PREFIX      0x20000
 546 #endif
 547
 548 /* RTnetlink multicast groups */
 549 enum rtnetlink_groups {
 550         RTNLGRP_NONE,
 551 #define RTNLGRP_NONE            RTNLGRP_NONE
 552         RTNLGRP_LINK,
 553 #define RTNLGRP_LINK            RTNLGRP_LINK
 554         RTNLGRP_NOTIFY,
 555 #define RTNLGRP_NOTIFY          RTNLGRP_NOTIFY
 556         RTNLGRP_NEIGH,
 557 #define RTNLGRP_NEIGH           RTNLGRP_NEIGH
 558         RTNLGRP_TC,
 559 #define RTNLGRP_TC              RTNLGRP_TC
 560         RTNLGRP_IPV4_IFADDR,
 561 #define RTNLGRP_IPV4_IFADDR     RTNLGRP_IPV4_IFADDR
 562         RTNLGRP_IPV4_MROUTE,
 563 #define RTNLGRP_IPV4_MROUTE     RTNLGRP_IPV4_MROUTE
 564         RTNLGRP_IPV4_ROUTE,
 565 #define RTNLGRP_IPV4_ROUTE      RTNLGRP_IPV4_ROUTE
 566         RTNLGRP_IPV4_RULE,
 567 #define RTNLGRP_IPV4_RULE       RTNLGRP_IPV4_RULE
 568         RTNLGRP_IPV6_IFADDR,
 569 #define RTNLGRP_IPV6_IFADDR     RTNLGRP_IPV6_IFADDR
 570         RTNLGRP_IPV6_MROUTE,
 571 #define RTNLGRP_IPV6_MROUTE     RTNLGRP_IPV6_MROUTE
 572         RTNLGRP_IPV6_ROUTE,
 573 #define RTNLGRP_IPV6_ROUTE      RTNLGRP_IPV6_ROUTE
 574         RTNLGRP_IPV6_IFINFO,
 575 #define RTNLGRP_IPV6_IFINFO     RTNLGRP_IPV6_IFINFO
 576         RTNLGRP_DECnet_IFADDR,
 577 #define RTNLGRP_DECnet_IFADDR   RTNLGRP_DECnet_IFADDR
 578         RTNLGRP_NOP2,
 579         RTNLGRP_DECnet_ROUTE,
 580 #define RTNLGRP_DECnet_ROUTE    RTNLGRP_DECnet_ROUTE
 581         RTNLGRP_DECnet_RULE,
 582 #define RTNLGRP_DECnet_RULE     RTNLGRP_DECnet_RULE
 583         RTNLGRP_NOP4,
 584         RTNLGRP_IPV6_PREFIX,
 585 #define RTNLGRP_IPV6_PREFIX     RTNLGRP_IPV6_PREFIX
 586         RTNLGRP_IPV6_RULE,
 587 #define RTNLGRP_IPV6_RULE       RTNLGRP_IPV6_RULE
 588         RTNLGRP_ND_USEROPT,
 589 #define RTNLGRP_ND_USEROPT      RTNLGRP_ND_USEROPT
 590         RTNLGRP_PHONET_IFADDR,
 591 #define RTNLGRP_PHONET_IFADDR   RTNLGRP_PHONET_IFADDR
 592         RTNLGRP_PHONET_ROUTE,
 593 #define RTNLGRP_PHONET_ROUTE    RTNLGRP_PHONET_ROUTE
 594         __RTNLGRP_MAX
 595 };
 596 #define RTNLGRP_MAX     (__RTNLGRP_MAX - 1)
 597
 598 /* TC action piece */
 599 struct tcamsg
 600 {
 601         unsigned char   tca_family;
 602         unsigned char   tca__pad1;
 603         unsigned short  tca__pad2;
 604 };
 605 #define TA_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
 606 #define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
 607 #define TCA_ACT_TAB 1 /* attr type must be >=1 */
 608 #define TCAA_MAX 1
 609
 610 /* End of information exported to user level */
 611
 612 #ifdef __KERNEL__
 613
 614 #include <linux/mutex.h>
 615
 616 static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
 617 {
 618         int len = strlen(str) + 1;
 619         return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
 620 }
 621
 622 extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
 623 extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
 624 extern int rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group,
 625                        struct nlmsghdr *nlh, gfp_t flags);
 626 extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
 627 extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
 628 extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
 629                               u32 id, u32 ts, u32 tsage, long expires,
 630                               u32 error);
 631
 632 extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
 633
 634 #define RTA_PUT(skb, attrtype, attrlen, data) \
 635 ({      if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
 636                  goto rtattr_failure; \
 637         __rta_fill(skb, attrtype, attrlen, data); })
 638
 639 #define RTA_APPEND(skb, attrlen, data) \
 640 ({      if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
 641                 goto rtattr_failure; \
 642         memcpy(skb_put(skb, attrlen), data, attrlen); })
 643
 644 #define RTA_PUT_NOHDR(skb, attrlen, data) \
 645 ({      RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
 646         memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \
 647                RTA_ALIGN(attrlen) - attrlen); })
 648
 649 #define RTA_PUT_U8(skb, attrtype, value) \
 650 ({      u8 _tmp = (value); \
 651         RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
 652
 653 #define RTA_PUT_U16(skb, attrtype, value) \
 654 ({      u16 _tmp = (value); \
 655         RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
 656
 657 #define RTA_PUT_U32(skb, attrtype, value) \
 658 ({      u32 _tmp = (value); \
 659         RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
 660
 661 #define RTA_PUT_U64(skb, attrtype, value) \
 662 ({      u64 _tmp = (value); \
 663         RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
 664
 665 #define RTA_PUT_SECS(skb, attrtype, value) \
 666         RTA_PUT_U64(skb, attrtype, (value) / HZ)
 667
 668 #define RTA_PUT_MSECS(skb, attrtype, value) \
 669         RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
 670
 671 #define RTA_PUT_STRING(skb, attrtype, value) \
 672         RTA_PUT(skb, attrtype, strlen(value) + 1, value)
 673
 674 #define RTA_PUT_FLAG(skb, attrtype) \
 675         RTA_PUT(skb, attrtype, 0, NULL);
 676
 677 #define RTA_NEST(skb, type) \
 678 ({      struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
 679         RTA_PUT(skb, type, 0, NULL); \
 680         __start;  })
 681
 682 #define RTA_NEST_END(skb, start) \
 683 ({      (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
 684         (skb)->len; })
 685
 686 #define RTA_NEST_COMPAT(skb, type, attrlen, data) \
 687 ({      struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
 688         RTA_PUT(skb, type, attrlen, data); \
 689         RTA_NEST(skb, type); \
 690         __start; })
 691
 692 #define RTA_NEST_COMPAT_END(skb, start) \
 693 ({      struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
 694         (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
 695         RTA_NEST_END(skb, __nest); \
 696         (skb)->len; })
 697
 698 #define RTA_NEST_CANCEL(skb, start) \
 699 ({      if (start) \
 700                 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
 701         -1; })
 702
 703 #define RTA_GET_U8(rta) \
 704 ({      if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
 705                 goto rtattr_failure; \
 706         *(u8 *) RTA_DATA(rta); })
 707
 708 #define RTA_GET_U16(rta) \
 709 ({      if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
 710                 goto rtattr_failure; \
 711         *(u16 *) RTA_DATA(rta); })
 712
 713 #define RTA_GET_U32(rta) \
 714 ({      if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
 715                 goto rtattr_failure; \
 716         *(u32 *) RTA_DATA(rta); })
 717
 718 #define RTA_GET_U64(rta) \
 719 ({      u64 _tmp; \
 720         if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
 721                 goto rtattr_failure; \
 722         memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
 723         _tmp; })
 724
 725 #define RTA_GET_FLAG(rta) (!!(rta))
 726
 727 #define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
 728 #define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
 729
 730 static inline struct rtattr *
 731 __rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
 732 {
 733         struct rtattr *rta;
 734         int size = RTA_LENGTH(attrlen);
 735
 736         rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
 737         rta->rta_type = attrtype;
 738         rta->rta_len = size;
 739         memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
 740         return rta;
 741 }
 742
 743 #define __RTA_PUT(skb, attrtype, attrlen) \
 744 ({      if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
 745                 goto rtattr_failure; \
 746         __rta_reserve(skb, attrtype, attrlen); })
 747
 748 extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
 749
 750 /* RTNL is used as a global lock for all changes to network configuration  */
 751 extern void rtnl_lock(void);
 752 extern void rtnl_unlock(void);
 753 extern int rtnl_trylock(void);
 754 extern int rtnl_is_locked(void);
 755
 756 extern void rtnetlink_init(void);
 757 extern void __rtnl_unlock(void);
 758
 759 #define ASSERT_RTNL() do { \
 760         if (unlikely(!rtnl_is_locked())) { \
 761                 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
 762                        __FILE__,  __LINE__); \
 763                 dump_stack(); \
 764         } \
 765 } while(0)
 766
 767 static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
 768 {
 769         return RTA_GET_U32(rta[RTA_TABLE-1]);
 770 rtattr_failure:
 771         return table;
 772 }
 773
 774 #endif /* __KERNEL__ */
 775
 776
 777 #endif  /* __LINUX_RTNETLINK_H */