include/linux/rtnetlink.h

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