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_DELADDRLABEL RTM_DELADDRLABEL
 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 #define RTPROT_DHCP     16      /* DHCP client */
 221
 222 /* rtm_scope
 223
 224    Really it is not scope, but sort of distance to the destination.
 225    NOWHERE are reserved for not existing destinations, HOST is our
 226    local addresses, LINK are destinations, located on directly attached
 227    link and UNIVERSE is everywhere in the Universe.
 228
 229    Intermediate values are also possible f.e. interior routes
 230    could be assigned a value between UNIVERSE and LINK.
 231 */
 232
 233 enum rt_scope_t
 234 {
 235         RT_SCOPE_UNIVERSE=0,
 236 /* User defined values  */
 237         RT_SCOPE_SITE=200,
 238         RT_SCOPE_LINK=253,
 239         RT_SCOPE_HOST=254,
 240         RT_SCOPE_NOWHERE=255
 241 };
 242
 243 /* rtm_flags */
 244
 245 #define RTM_F_NOTIFY            0x100   /* Notify user of route change  */
 246 #define RTM_F_CLONED            0x200   /* This route is cloned         */
 247 #define RTM_F_EQUALIZE          0x400   /* Multipath equalizer: NI      */
 248 #define RTM_F_PREFIX            0x800   /* Prefix addresses             */
 249
 250 /* Reserved table identifiers */
 251
 252 enum rt_class_t
 253 {
 254         RT_TABLE_UNSPEC=0,
 255 /* User defined values */
 256         RT_TABLE_COMPAT=252,
 257         RT_TABLE_DEFAULT=253,
 258         RT_TABLE_MAIN=254,
 259         RT_TABLE_LOCAL=255,
 260         RT_TABLE_MAX=0xFFFFFFFF
 261 };
 262
 263
 264 /* Routing message attributes */
 265
 266 enum rtattr_type_t
 267 {
 268         RTA_UNSPEC,
 269         RTA_DST,
 270         RTA_SRC,
 271         RTA_IIF,
 272         RTA_OIF,
 273         RTA_GATEWAY,
 274         RTA_PRIORITY,
 275         RTA_PREFSRC,
 276         RTA_METRICS,
 277         RTA_MULTIPATH,
 278         RTA_PROTOINFO, /* no longer used */
 279         RTA_FLOW,
 280         RTA_CACHEINFO,
 281         RTA_SESSION, /* no longer used */
 282         RTA_MP_ALGO, /* no longer used */
 283         RTA_TABLE,
 284         __RTA_MAX
 285 };
 286
 287 #define RTA_MAX (__RTA_MAX - 1)
 288
 289 #define RTM_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
 290 #define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
 291
 292 /* RTM_MULTIPATH --- array of struct rtnexthop.
 293  *
 294  * "struct rtnexthop" describes all necessary nexthop information,
 295  * i.e. parameters of path to a destination via this nexthop.
 296  *
 297  * At the moment it is impossible to set different prefsrc, mtu, window
 298  * and rtt for different paths from multipath.
 299  */
 300
 301 struct rtnexthop
 302 {
 303         unsigned short          rtnh_len;
 304         unsigned char           rtnh_flags;
 305         unsigned char           rtnh_hops;
 306         int                     rtnh_ifindex;
 307 };
 308
 309 /* rtnh_flags */
 310
 311 #define RTNH_F_DEAD             1       /* Nexthop is dead (used by multipath)  */
 312 #define RTNH_F_PERVASIVE        2       /* Do recursive gateway lookup  */
 313 #define RTNH_F_ONLINK           4       /* Gateway is forced on link    */
 314
 315 /* Macros to handle hexthops */
 316
 317 #define RTNH_ALIGNTO    4
 318 #define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
 319 #define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
 320                            ((int)(rtnh)->rtnh_len) <= (len))
 321 #define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
 322 #define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
 323 #define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
 324 #define RTNH_DATA(rtnh)   ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
 325
 326 /* RTM_CACHEINFO */
 327
 328 struct rta_cacheinfo
 329 {
 330         __u32   rta_clntref;
 331         __u32   rta_lastuse;
 332         __s32   rta_expires;
 333         __u32   rta_error;
 334         __u32   rta_used;
 335
 336 #define RTNETLINK_HAVE_PEERINFO 1
 337         __u32   rta_id;
 338         __u32   rta_ts;
 339         __u32   rta_tsage;
 340 };
 341
 342 /* RTM_METRICS --- array of struct rtattr with types of RTAX_* */
 343
 344 enum
 345 {
 346         RTAX_UNSPEC,
 347 #define RTAX_UNSPEC RTAX_UNSPEC
 348         RTAX_LOCK,
 349 #define RTAX_LOCK RTAX_LOCK
 350         RTAX_MTU,
 351 #define RTAX_MTU RTAX_MTU
 352         RTAX_WINDOW,
 353 #define RTAX_WINDOW RTAX_WINDOW
 354         RTAX_RTT,
 355 #define RTAX_RTT RTAX_RTT
 356         RTAX_RTTVAR,
 357 #define RTAX_RTTVAR RTAX_RTTVAR
 358         RTAX_SSTHRESH,
 359 #define RTAX_SSTHRESH RTAX_SSTHRESH
 360         RTAX_CWND,
 361 #define RTAX_CWND RTAX_CWND
 362         RTAX_ADVMSS,
 363 #define RTAX_ADVMSS RTAX_ADVMSS
 364         RTAX_REORDERING,
 365 #define RTAX_REORDERING RTAX_REORDERING
 366         RTAX_HOPLIMIT,
 367 #define RTAX_HOPLIMIT RTAX_HOPLIMIT
 368         RTAX_INITCWND,
 369 #define RTAX_INITCWND RTAX_INITCWND
 370         RTAX_FEATURES,
 371 #define RTAX_FEATURES RTAX_FEATURES
 372         RTAX_RTO_MIN,
 373 #define RTAX_RTO_MIN RTAX_RTO_MIN
 374         __RTAX_MAX
 375 };
 376
 377 #define RTAX_MAX (__RTAX_MAX - 1)
 378
 379 #define RTAX_FEATURE_ECN        0x00000001
 380 #define RTAX_FEATURE_NO_SACK    0x00000002
 381 #define RTAX_FEATURE_NO_TSTAMP  0x00000004
 382 #define RTAX_FEATURE_ALLFRAG    0x00000008
 383 #define RTAX_FEATURE_NO_WSCALE  0x00000010
 384 #define RTAX_FEATURE_NO_DSACK   0x00000020
 385
 386 struct rta_session
 387 {
 388         __u8    proto;
 389         __u8    pad1;
 390         __u16   pad2;
 391
 392         union {
 393                 struct {
 394                         __u16   sport;
 395                         __u16   dport;
 396                 } ports;
 397
 398                 struct {
 399                         __u8    type;
 400                         __u8    code;
 401                         __u16   ident;
 402                 } icmpt;
 403
 404                 __u32           spi;
 405         } u;
 406 };
 407
 408 /****
 409  *              General form of address family dependent message.
 410  ****/
 411
 412 struct rtgenmsg
 413 {
 414         unsigned char           rtgen_family;
 415 };
 416
 417 /*****************************************************************
 418  *              Link layer specific messages.
 419  ****/
 420
 421 /* struct ifinfomsg
 422  * passes link level specific information, not dependent
 423  * on network protocol.
 424  */
 425
 426 struct ifinfomsg
 427 {
 428         unsigned char   ifi_family;
 429         unsigned char   __ifi_pad;
 430         unsigned short  ifi_type;               /* ARPHRD_* */
 431         int             ifi_index;              /* Link index   */
 432         unsigned        ifi_flags;              /* IFF_* flags  */
 433         unsigned        ifi_change;             /* IFF_* change mask */
 434 };
 435
 436 /********************************************************************
 437  *              prefix information
 438  ****/
 439
 440 struct prefixmsg
 441 {
 442         unsigned char   prefix_family;
 443         unsigned char   prefix_pad1;
 444         unsigned short  prefix_pad2;
 445         int             prefix_ifindex;
 446         unsigned char   prefix_type;
 447         unsigned char   prefix_len;
 448         unsigned char   prefix_flags;
 449         unsigned char   prefix_pad3;
 450 };
 451
 452 enum
 453 {
 454         PREFIX_UNSPEC,
 455         PREFIX_ADDRESS,
 456         PREFIX_CACHEINFO,
 457         __PREFIX_MAX
 458 };
 459
 460 #define PREFIX_MAX      (__PREFIX_MAX - 1)
 461
 462 struct prefix_cacheinfo
 463 {
 464         __u32   preferred_time;
 465         __u32   valid_time;
 466 };
 467
 468
 469 /*****************************************************************
 470  *              Traffic control messages.
 471  ****/
 472
 473 struct tcmsg
 474 {
 475         unsigned char   tcm_family;
 476         unsigned char   tcm__pad1;
 477         unsigned short  tcm__pad2;
 478         int             tcm_ifindex;
 479         __u32           tcm_handle;
 480         __u32           tcm_parent;
 481         __u32           tcm_info;
 482 };
 483
 484 enum
 485 {
 486         TCA_UNSPEC,
 487         TCA_KIND,
 488         TCA_OPTIONS,
 489         TCA_STATS,
 490         TCA_XSTATS,
 491         TCA_RATE,
 492         TCA_FCNT,
 493         TCA_STATS2,
 494         TCA_STAB,
 495         __TCA_MAX
 496 };
 497
 498 #define TCA_MAX (__TCA_MAX - 1)
 499
 500 #define TCA_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
 501 #define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
 502
 503 /********************************************************************
 504  *              Neighbor Discovery userland options
 505  ****/
 506
 507 struct nduseroptmsg
 508 {
 509         unsigned char   nduseropt_family;
 510         unsigned char   nduseropt_pad1;
 511         unsigned short  nduseropt_opts_len;     /* Total length of options */
 512         int             nduseropt_ifindex;
 513         __u8            nduseropt_icmp_type;
 514         __u8            nduseropt_icmp_code;
 515         unsigned short  nduseropt_pad2;
 516         unsigned int    nduseropt_pad3;
 517         /* Followed by one or more ND options */
 518 };
 519
 520 enum
 521 {
 522         NDUSEROPT_UNSPEC,
 523         NDUSEROPT_SRCADDR,
 524         __NDUSEROPT_MAX
 525 };
 526
 527 #define NDUSEROPT_MAX   (__NDUSEROPT_MAX - 1)
 528
 529 #ifndef __KERNEL__
 530 /* RTnetlink multicast groups - backwards compatibility for userspace */
 531 #define RTMGRP_LINK             1
 532 #define RTMGRP_NOTIFY           2
 533 #define RTMGRP_NEIGH            4
 534 #define RTMGRP_TC               8
 535
 536 #define RTMGRP_IPV4_IFADDR      0x10
 537 #define RTMGRP_IPV4_MROUTE      0x20
 538 #define RTMGRP_IPV4_ROUTE       0x40
 539 #define RTMGRP_IPV4_RULE        0x80
 540
 541 #define RTMGRP_IPV6_IFADDR      0x100
 542 #define RTMGRP_IPV6_MROUTE      0x200
 543 #define RTMGRP_IPV6_ROUTE       0x400
 544 #define RTMGRP_IPV6_IFINFO      0x800
 545
 546 #define RTMGRP_DECnet_IFADDR    0x1000
 547 #define RTMGRP_DECnet_ROUTE     0x4000
 548
 549 #define RTMGRP_IPV6_PREFIX      0x20000
 550 #endif
 551
 552 /* RTnetlink multicast groups */
 553 enum rtnetlink_groups {
 554         RTNLGRP_NONE,
 555 #define RTNLGRP_NONE            RTNLGRP_NONE
 556         RTNLGRP_LINK,
 557 #define RTNLGRP_LINK            RTNLGRP_LINK
 558         RTNLGRP_NOTIFY,
 559 #define RTNLGRP_NOTIFY          RTNLGRP_NOTIFY
 560         RTNLGRP_NEIGH,
 561 #define RTNLGRP_NEIGH           RTNLGRP_NEIGH
 562         RTNLGRP_TC,
 563 #define RTNLGRP_TC              RTNLGRP_TC
 564         RTNLGRP_IPV4_IFADDR,
 565 #define RTNLGRP_IPV4_IFADDR     RTNLGRP_IPV4_IFADDR
 566         RTNLGRP_IPV4_MROUTE,
 567 #define RTNLGRP_IPV4_MROUTE     RTNLGRP_IPV4_MROUTE
 568         RTNLGRP_IPV4_ROUTE,
 569 #define RTNLGRP_IPV4_ROUTE      RTNLGRP_IPV4_ROUTE
 570         RTNLGRP_IPV4_RULE,
 571 #define RTNLGRP_IPV4_RULE       RTNLGRP_IPV4_RULE
 572         RTNLGRP_IPV6_IFADDR,
 573 #define RTNLGRP_IPV6_IFADDR     RTNLGRP_IPV6_IFADDR
 574         RTNLGRP_IPV6_MROUTE,
 575 #define RTNLGRP_IPV6_MROUTE     RTNLGRP_IPV6_MROUTE
 576         RTNLGRP_IPV6_ROUTE,
 577 #define RTNLGRP_IPV6_ROUTE      RTNLGRP_IPV6_ROUTE
 578         RTNLGRP_IPV6_IFINFO,
 579 #define RTNLGRP_IPV6_IFINFO     RTNLGRP_IPV6_IFINFO
 580         RTNLGRP_DECnet_IFADDR,
 581 #define RTNLGRP_DECnet_IFADDR   RTNLGRP_DECnet_IFADDR
 582         RTNLGRP_NOP2,
 583         RTNLGRP_DECnet_ROUTE,
 584 #define RTNLGRP_DECnet_ROUTE    RTNLGRP_DECnet_ROUTE
 585         RTNLGRP_DECnet_RULE,
 586 #define RTNLGRP_DECnet_RULE     RTNLGRP_DECnet_RULE
 587         RTNLGRP_NOP4,
 588         RTNLGRP_IPV6_PREFIX,
 589 #define RTNLGRP_IPV6_PREFIX     RTNLGRP_IPV6_PREFIX
 590         RTNLGRP_IPV6_RULE,
 591 #define RTNLGRP_IPV6_RULE       RTNLGRP_IPV6_RULE
 592         RTNLGRP_ND_USEROPT,
 593 #define RTNLGRP_ND_USEROPT      RTNLGRP_ND_USEROPT
 594         RTNLGRP_PHONET_IFADDR,
 595 #define RTNLGRP_PHONET_IFADDR   RTNLGRP_PHONET_IFADDR
 596         RTNLGRP_PHONET_ROUTE,
 597 #define RTNLGRP_PHONET_ROUTE    RTNLGRP_PHONET_ROUTE
 598         __RTNLGRP_MAX
 599 };
 600 #define RTNLGRP_MAX     (__RTNLGRP_MAX - 1)
 601
 602 /* TC action piece */
 603 struct tcamsg
 604 {
 605         unsigned char   tca_family;
 606         unsigned char   tca__pad1;
 607         unsigned short  tca__pad2;
 608 };
 609 #define TA_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
 610 #define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
 611 #define TCA_ACT_TAB 1 /* attr type must be >=1 */
 612 #define TCAA_MAX 1
 613
 614 /* End of information exported to user level */
 615
 616 #ifdef __KERNEL__
 617
 618 #include <linux/mutex.h>
 619
 620 static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
 621 {
 622         int len = strlen(str) + 1;
 623         return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
 624 }
 625
 626 extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
 627 extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
 628 extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid,
 629                         u32 group, struct nlmsghdr *nlh, gfp_t flags);
 630 extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
 631 extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
 632 extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
 633                               u32 id, u32 ts, u32 tsage, long expires,
 634                               u32 error);
 635
 636 extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
 637
 638 #define RTA_PUT(skb, attrtype, attrlen, data) \
 639 ({      if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
 640                  goto rtattr_failure; \
 641         __rta_fill(skb, attrtype, attrlen, data); })
 642
 643 #define RTA_APPEND(skb, attrlen, data) \
 644 ({      if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
 645                 goto rtattr_failure; \
 646         memcpy(skb_put(skb, attrlen), data, attrlen); })
 647
 648 #define RTA_PUT_NOHDR(skb, attrlen, data) \
 649 ({      RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
 650         memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \
 651                RTA_ALIGN(attrlen) - attrlen); })
 652
 653 #define RTA_PUT_U8(skb, attrtype, value) \
 654 ({      u8 _tmp = (value); \
 655         RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
 656
 657 #define RTA_PUT_U16(skb, attrtype, value) \
 658 ({      u16 _tmp = (value); \
 659         RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
 660
 661 #define RTA_PUT_U32(skb, attrtype, value) \
 662 ({      u32 _tmp = (value); \
 663         RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
 664
 665 #define RTA_PUT_U64(skb, attrtype, value) \
 666 ({      u64 _tmp = (value); \
 667         RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
 668
 669 #define RTA_PUT_SECS(skb, attrtype, value) \
 670         RTA_PUT_U64(skb, attrtype, (value) / HZ)
 671
 672 #define RTA_PUT_MSECS(skb, attrtype, value) \
 673         RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
 674
 675 #define RTA_PUT_STRING(skb, attrtype, value) \
 676         RTA_PUT(skb, attrtype, strlen(value) + 1, value)
 677
 678 #define RTA_PUT_FLAG(skb, attrtype) \
 679         RTA_PUT(skb, attrtype, 0, NULL);
 680
 681 #define RTA_NEST(skb, type) \
 682 ({      struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
 683         RTA_PUT(skb, type, 0, NULL); \
 684         __start;  })
 685
 686 #define RTA_NEST_END(skb, start) \
 687 ({      (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
 688         (skb)->len; })
 689
 690 #define RTA_NEST_COMPAT(skb, type, attrlen, data) \
 691 ({      struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
 692         RTA_PUT(skb, type, attrlen, data); \
 693         RTA_NEST(skb, type); \
 694         __start; })
 695
 696 #define RTA_NEST_COMPAT_END(skb, start) \
 697 ({      struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
 698         (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
 699         RTA_NEST_END(skb, __nest); \
 700         (skb)->len; })
 701
 702 #define RTA_NEST_CANCEL(skb, start) \
 703 ({      if (start) \
 704                 skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
 705         -1; })
 706
 707 #define RTA_GET_U8(rta) \
 708 ({      if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
 709                 goto rtattr_failure; \
 710         *(u8 *) RTA_DATA(rta); })
 711
 712 #define RTA_GET_U16(rta) \
 713 ({      if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
 714                 goto rtattr_failure; \
 715         *(u16 *) RTA_DATA(rta); })
 716
 717 #define RTA_GET_U32(rta) \
 718 ({      if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
 719                 goto rtattr_failure; \
 720         *(u32 *) RTA_DATA(rta); })
 721
 722 #define RTA_GET_U64(rta) \
 723 ({      u64 _tmp; \
 724         if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
 725                 goto rtattr_failure; \
 726         memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
 727         _tmp; })
 728
 729 #define RTA_GET_FLAG(rta) (!!(rta))
 730
 731 #define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
 732 #define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
 733
 734 static inline struct rtattr *
 735 __rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
 736 {
 737         struct rtattr *rta;
 738         int size = RTA_LENGTH(attrlen);
 739
 740         rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
 741         rta->rta_type = attrtype;
 742         rta->rta_len = size;
 743         memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
 744         return rta;
 745 }
 746
 747 #define __RTA_PUT(skb, attrtype, attrlen) \
 748 ({      if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
 749                 goto rtattr_failure; \
 750         __rta_reserve(skb, attrtype, attrlen); })
 751
 752 extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
 753
 754 /* RTNL is used as a global lock for all changes to network configuration  */
 755 extern void rtnl_lock(void);
 756 extern void rtnl_unlock(void);
 757 extern int rtnl_trylock(void);
 758 extern int rtnl_is_locked(void);
 759
 760 extern void rtnetlink_init(void);
 761 extern void __rtnl_unlock(void);
 762
 763 #define ASSERT_RTNL() do { \
 764         if (unlikely(!rtnl_is_locked())) { \
 765                 printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
 766                        __FILE__,  __LINE__); \
 767                 dump_stack(); \
 768         } \
 769 } while(0)
 770
 771 static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
 772 {
 773         return RTA_GET_U32(rta[RTA_TABLE-1]);
 774 rtattr_failure:
 775         return table;
 776 }
 777
 778 #endif /* __KERNEL__ */
 779
 780
 781 #endif  /* __LINUX_RTNETLINK_H */