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