LXR linux/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/* rtnetlink families. Values up to 127 are reserved for real address
  11 * families, values above 128 may be used arbitrarily.
  12 */
  13#define RTNL_FAMILY_IPMR                128
  14#define RTNL_FAMILY_IP6MR               129
  15#define RTNL_FAMILY_MAX                 129
  16
  17/****
  18 *              Routing/neighbour discovery messages.
  19 ****/
  20
  21/* Types of messages */
  22
  23enum {
  24        RTM_BASE        = 16,
  25#define RTM_BASE        RTM_BASE
  26
  27        RTM_NEWLINK     = 16,
  28#define RTM_NEWLINK     RTM_NEWLINK
  29        RTM_DELLINK,
  30#define RTM_DELLINK     RTM_DELLINK
  31        RTM_GETLINK,
  32#define RTM_GETLINK     RTM_GETLINK
  33        RTM_SETLINK,
  34#define RTM_SETLINK     RTM_SETLINK
  35
  36        RTM_NEWADDR     = 20,
  37#define RTM_NEWADDR     RTM_NEWADDR
  38        RTM_DELADDR,
  39#define RTM_DELADDR     RTM_DELADDR
  40        RTM_GETADDR,
  41#define RTM_GETADDR     RTM_GETADDR
  42
  43        RTM_NEWROUTE    = 24,
  44#define RTM_NEWROUTE    RTM_NEWROUTE
  45        RTM_DELROUTE,
  46#define RTM_DELROUTE    RTM_DELROUTE
  47        RTM_GETROUTE,
  48#define RTM_GETROUTE    RTM_GETROUTE
  49
  50        RTM_NEWNEIGH    = 28,
  51#define RTM_NEWNEIGH    RTM_NEWNEIGH
  52        RTM_DELNEIGH,
  53#define RTM_DELNEIGH    RTM_DELNEIGH
  54        RTM_GETNEIGH,
  55#define RTM_GETNEIGH    RTM_GETNEIGH
  56
  57        RTM_NEWRULE     = 32,
  58#define RTM_NEWRULE     RTM_NEWRULE
  59        RTM_DELRULE,
  60#define RTM_DELRULE     RTM_DELRULE
  61        RTM_GETRULE,
  62#define RTM_GETRULE     RTM_GETRULE
  63
  64        RTM_NEWQDISC    = 36,
  65#define RTM_NEWQDISC    RTM_NEWQDISC
  66        RTM_DELQDISC,
  67#define RTM_DELQDISC    RTM_DELQDISC
  68        RTM_GETQDISC,
  69#define RTM_GETQDISC    RTM_GETQDISC
  70
  71        RTM_NEWTCLASS   = 40,
  72#define RTM_NEWTCLASS   RTM_NEWTCLASS
  73        RTM_DELTCLASS,
  74#define RTM_DELTCLASS   RTM_DELTCLASS
  75        RTM_GETTCLASS,
  76#define RTM_GETTCLASS   RTM_GETTCLASS
  77
  78        RTM_NEWTFILTER  = 44,
  79#define RTM_NEWTFILTER  RTM_NEWTFILTER
  80        RTM_DELTFILTER,
  81#define RTM_DELTFILTER  RTM_DELTFILTER
  82        RTM_GETTFILTER,
  83#define RTM_GETTFILTER  RTM_GETTFILTER
  84
  85        RTM_NEWACTION   = 48,
  86#define RTM_NEWACTION   RTM_NEWACTION
  87        RTM_DELACTION,
  88#define RTM_DELACTION   RTM_DELACTION
  89        RTM_GETACTION,
  90#define RTM_GETACTION   RTM_GETACTION
  91
  92        RTM_NEWPREFIX   = 52,
  93#define RTM_NEWPREFIX   RTM_NEWPREFIX
  94
  95        RTM_GETMULTICAST = 58,
  96#define RTM_GETMULTICAST RTM_GETMULTICAST
  97
  98        RTM_GETANYCAST  = 62,
  99#define RTM_GETANYCAST  RTM_GETANYCAST
 100
 101        RTM_NEWNEIGHTBL = 64,
 102#define RTM_NEWNEIGHTBL RTM_NEWNEIGHTBL
 103        RTM_GETNEIGHTBL = 66,
 104#define RTM_GETNEIGHTBL RTM_GETNEIGHTBL
 105        RTM_SETNEIGHTBL,
 106#define RTM_SETNEIGHTBL RTM_SETNEIGHTBL
 107
 108        RTM_NEWNDUSEROPT = 68,
 109#define RTM_NEWNDUSEROPT RTM_NEWNDUSEROPT
 110
 111        RTM_NEWADDRLABEL = 72,
 112#define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
 113        RTM_DELADDRLABEL,
 114#define RTM_DELADDRLABEL RTM_DELADDRLABEL
 115        RTM_GETADDRLABEL,
 116#define RTM_GETADDRLABEL RTM_GETADDRLABEL
 117
 118        RTM_GETDCB = 78,
 119#define RTM_GETDCB RTM_GETDCB
 120        RTM_SETDCB,
 121#define RTM_SETDCB RTM_SETDCB
 122
 123        __RTM_MAX,
 124#define RTM_MAX         (((__RTM_MAX + 3) & ~3) - 1)
 125};
 126
 127#define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE)
 128#define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2)
 129#define RTM_FAM(cmd)    (((cmd) - RTM_BASE) >> 2)
 130
 131/* 
 132   Generic structure for encapsulation of optional route information.
 133   It is reminiscent of sockaddr, but with sa_family replaced
 134   with attribute type.
 135 */
 136
 137struct rtattr {
 138        unsigned short  rta_len;
 139        unsigned short  rta_type;
 140};
 141
 142/* Macros to handle rtattributes */
 143
 144#define RTA_ALIGNTO     4
 145#define RTA_ALIGN(len) ( ((len)+RTA_ALIGNTO-1) & ~(RTA_ALIGNTO-1) )
 146#define RTA_OK(rta,len) ((len) >= (int)sizeof(struct rtattr) && \
 147                         (rta)->rta_len >= sizeof(struct rtattr) && \
 148                         (rta)->rta_len <= (len))
 149#define RTA_NEXT(rta,attrlen)   ((attrlen) -= RTA_ALIGN((rta)->rta_len), \
 150                                 (struct rtattr*)(((char*)(rta)) + RTA_ALIGN((rta)->rta_len)))
 151#define RTA_LENGTH(len) (RTA_ALIGN(sizeof(struct rtattr)) + (len))
 152#define RTA_SPACE(len)  RTA_ALIGN(RTA_LENGTH(len))
 153#define RTA_DATA(rta)   ((void*)(((char*)(rta)) + RTA_LENGTH(0)))
 154#define RTA_PAYLOAD(rta) ((int)((rta)->rta_len) - RTA_LENGTH(0))
 155
 156
 157
 158
 159/******************************************************************************
 160 *              Definitions used in routing table administration.
 161 ****/
 162
 163struct rtmsg {
 164        unsigned char           rtm_family;
 165        unsigned char           rtm_dst_len;
 166        unsigned char           rtm_src_len;
 167        unsigned char           rtm_tos;
 168
 169        unsigned char           rtm_table;      /* Routing table id */
 170        unsigned char           rtm_protocol;   /* Routing protocol; see below  */
 171        unsigned char           rtm_scope;      /* See below */ 
 172        unsigned char           rtm_type;       /* See below    */
 173
 174        unsigned                rtm_flags;
 175};
 176
 177/* rtm_type */
 178
 179enum {
 180        RTN_UNSPEC,
 181        RTN_UNICAST,            /* Gateway or direct route      */
 182        RTN_LOCAL,              /* Accept locally               */
 183        RTN_BROADCAST,          /* Accept locally as broadcast,
 184                                   send as broadcast */
 185        RTN_ANYCAST,            /* Accept locally as broadcast,
 186                                   but send as unicast */
 187        RTN_MULTICAST,          /* Multicast route              */
 188        RTN_BLACKHOLE,          /* Drop                         */
 189        RTN_UNREACHABLE,        /* Destination is unreachable   */
 190        RTN_PROHIBIT,           /* Administratively prohibited  */
 191        RTN_THROW,              /* Not in this table            */
 192        RTN_NAT,                /* Translate this address       */
 193        RTN_XRESOLVE,           /* Use external resolver        */
 194        __RTN_MAX
 195};
 196
 197#define RTN_MAX (__RTN_MAX - 1)
 198
 199
 200/* rtm_protocol */
 201
 202#define RTPROT_UNSPEC   0
 203#define RTPROT_REDIRECT 1       /* Route installed by ICMP redirects;
 204                                   not used by current IPv4 */
 205#define RTPROT_KERNEL   2       /* Route installed by kernel            */
 206#define RTPROT_BOOT     3       /* Route installed during boot          */
 207#define RTPROT_STATIC   4       /* Route installed by administrator     */
 208
 209/* Values of protocol >= RTPROT_STATIC are not interpreted by kernel;
 210   they are just passed from user and back as is.
 211   It will be used by hypothetical multiple routing daemons.
 212   Note that protocol values should be standardized in order to
 213   avoid conflicts.
 214 */
 215
 216#define RTPROT_GATED    8       /* Apparently, GateD */
 217#define RTPROT_RA       9       /* RDISC/ND router advertisements */
 218#define RTPROT_MRT      10      /* Merit MRT */
 219#define RTPROT_ZEBRA    11      /* Zebra */
 220#define RTPROT_BIRD     12      /* BIRD */
 221#define RTPROT_DNROUTED 13      /* DECnet routing daemon */
 222#define RTPROT_XORP     14      /* XORP */
 223#define RTPROT_NTK      15      /* Netsukuku */
 224#define RTPROT_DHCP     16      /* DHCP client */
 225
 226/* rtm_scope
 227
 228   Really it is not scope, but sort of distance to the destination.
 229   NOWHERE are reserved for not existing destinations, HOST is our
 230   local addresses, LINK are destinations, located on directly attached
 231   link and UNIVERSE is everywhere in the Universe.
 232
 233   Intermediate values are also possible f.e. interior routes
 234   could be assigned a value between UNIVERSE and LINK.
 235*/
 236
 237enum rt_scope_t {
 238        RT_SCOPE_UNIVERSE=0,
 239/* User defined values  */
 240        RT_SCOPE_SITE=200,
 241        RT_SCOPE_LINK=253,
 242        RT_SCOPE_HOST=254,
 243        RT_SCOPE_NOWHERE=255
 244};
 245
 246/* rtm_flags */
 247
 248#define RTM_F_NOTIFY            0x100   /* Notify user of route change  */
 249#define RTM_F_CLONED            0x200   /* This route is cloned         */
 250#define RTM_F_EQUALIZE          0x400   /* Multipath equalizer: NI      */
 251#define RTM_F_PREFIX            0x800   /* Prefix addresses             */
 252
 253/* Reserved table identifiers */
 254
 255enum rt_class_t {
 256        RT_TABLE_UNSPEC=0,
 257/* User defined values */
 258        RT_TABLE_COMPAT=252,
 259        RT_TABLE_DEFAULT=253,
 260        RT_TABLE_MAIN=254,
 261        RT_TABLE_LOCAL=255,
 262        RT_TABLE_MAX=0xFFFFFFFF
 263};
 264
 265
 266/* Routing message attributes */
 267
 268enum rtattr_type_t {
 269        RTA_UNSPEC,
 270        RTA_DST,
 271        RTA_SRC,
 272        RTA_IIF,
 273        RTA_OIF,
 274        RTA_GATEWAY,
 275        RTA_PRIORITY,
 276        RTA_PREFSRC,
 277        RTA_METRICS,
 278        RTA_MULTIPATH,
 279        RTA_PROTOINFO, /* no longer used */
 280        RTA_FLOW,
 281        RTA_CACHEINFO,
 282        RTA_SESSION, /* no longer used */
 283        RTA_MP_ALGO, /* no longer used */
 284        RTA_TABLE,
 285        RTA_MARK,
 286        __RTA_MAX
 287};
 288
 289#define RTA_MAX (__RTA_MAX - 1)
 290
 291#define RTM_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg))))
 292#define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg))
 293
 294/* RTM_MULTIPATH --- array of struct rtnexthop.
 295 *
 296 * "struct rtnexthop" describes all necessary nexthop information,
 297 * i.e. parameters of path to a destination via this nexthop.
 298 *
 299 * At the moment it is impossible to set different prefsrc, mtu, window
 300 * and rtt for different paths from multipath.
 301 */
 302
 303struct rtnexthop {
 304        unsigned short          rtnh_len;
 305        unsigned char           rtnh_flags;
 306        unsigned char           rtnh_hops;
 307        int                     rtnh_ifindex;
 308};
 309
 310/* rtnh_flags */
 311
 312#define RTNH_F_DEAD             1       /* Nexthop is dead (used by multipath)  */
 313#define RTNH_F_PERVASIVE        2       /* Do recursive gateway lookup  */
 314#define RTNH_F_ONLINK           4       /* Gateway is forced on link    */
 315
 316/* Macros to handle hexthops */
 317
 318#define RTNH_ALIGNTO    4
 319#define RTNH_ALIGN(len) ( ((len)+RTNH_ALIGNTO-1) & ~(RTNH_ALIGNTO-1) )
 320#define RTNH_OK(rtnh,len) ((rtnh)->rtnh_len >= sizeof(struct rtnexthop) && \
 321                           ((int)(rtnh)->rtnh_len) <= (len))
 322#define RTNH_NEXT(rtnh) ((struct rtnexthop*)(((char*)(rtnh)) + RTNH_ALIGN((rtnh)->rtnh_len)))
 323#define RTNH_LENGTH(len) (RTNH_ALIGN(sizeof(struct rtnexthop)) + (len))
 324#define RTNH_SPACE(len) RTNH_ALIGN(RTNH_LENGTH(len))
 325#define RTNH_DATA(rtnh)   ((struct rtattr*)(((char*)(rtnh)) + RTNH_LENGTH(0)))
 326
 327/* RTM_CACHEINFO */
 328
 329struct rta_cacheinfo {
 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
 344enum {
 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_INITRWND,
 374#define RTAX_INITRWND RTAX_INITRWND
 375        __RTAX_MAX
 376};
 377
 378#define RTAX_MAX (__RTAX_MAX - 1)
 379
 380#define RTAX_FEATURE_ECN        0x00000001
 381#define RTAX_FEATURE_SACK       0x00000002
 382#define RTAX_FEATURE_TIMESTAMP  0x00000004
 383#define RTAX_FEATURE_ALLFRAG    0x00000008
 384
 385struct rta_session {
 386        __u8    proto;
 387        __u8    pad1;
 388        __u16   pad2;
 389
 390        union {
 391                struct {
 392                        __u16   sport;
 393                        __u16   dport;
 394                } ports;
 395
 396                struct {
 397                        __u8    type;
 398                        __u8    code;
 399                        __u16   ident;
 400                } icmpt;
 401
 402                __u32           spi;
 403        } u;
 404};
 405
 406/****
 407 *              General form of address family dependent message.
 408 ****/
 409
 410struct rtgenmsg {
 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
 423struct ifinfomsg {
 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
 436struct prefixmsg {
 437        unsigned char   prefix_family;
 438        unsigned char   prefix_pad1;
 439        unsigned short  prefix_pad2;
 440        int             prefix_ifindex;
 441        unsigned char   prefix_type;
 442        unsigned char   prefix_len;
 443        unsigned char   prefix_flags;
 444        unsigned char   prefix_pad3;
 445};
 446
 447enum 
 448{
 449        PREFIX_UNSPEC,
 450        PREFIX_ADDRESS,
 451        PREFIX_CACHEINFO,
 452        __PREFIX_MAX
 453};
 454
 455#define PREFIX_MAX      (__PREFIX_MAX - 1)
 456
 457struct prefix_cacheinfo {
 458        __u32   preferred_time;
 459        __u32   valid_time;
 460};
 461
 462
 463/*****************************************************************
 464 *              Traffic control messages.
 465 ****/
 466
 467struct tcmsg {
 468        unsigned char   tcm_family;
 469        unsigned char   tcm__pad1;
 470        unsigned short  tcm__pad2;
 471        int             tcm_ifindex;
 472        __u32           tcm_handle;
 473        __u32           tcm_parent;
 474        __u32           tcm_info;
 475};
 476
 477enum {
 478        TCA_UNSPEC,
 479        TCA_KIND,
 480        TCA_OPTIONS,
 481        TCA_STATS,
 482        TCA_XSTATS,
 483        TCA_RATE,
 484        TCA_FCNT,
 485        TCA_STATS2,
 486        TCA_STAB,
 487        __TCA_MAX
 488};
 489
 490#define TCA_MAX (__TCA_MAX - 1)
 491
 492#define TCA_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg))))
 493#define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg))
 494
 495/********************************************************************
 496 *              Neighbor Discovery userland options
 497 ****/
 498
 499struct nduseroptmsg {
 500        unsigned char   nduseropt_family;
 501        unsigned char   nduseropt_pad1;
 502        unsigned short  nduseropt_opts_len;     /* Total length of options */
 503        int             nduseropt_ifindex;
 504        __u8            nduseropt_icmp_type;
 505        __u8            nduseropt_icmp_code;
 506        unsigned short  nduseropt_pad2;
 507        unsigned int    nduseropt_pad3;
 508        /* Followed by one or more ND options */
 509};
 510
 511enum {
 512        NDUSEROPT_UNSPEC,
 513        NDUSEROPT_SRCADDR,
 514        __NDUSEROPT_MAX
 515};
 516
 517#define NDUSEROPT_MAX   (__NDUSEROPT_MAX - 1)
 518
 519#ifndef __KERNEL__
 520/* RTnetlink multicast groups - backwards compatibility for userspace */
 521#define RTMGRP_LINK             1
 522#define RTMGRP_NOTIFY           2
 523#define RTMGRP_NEIGH            4
 524#define RTMGRP_TC               8
 525
 526#define RTMGRP_IPV4_IFADDR      0x10
 527#define RTMGRP_IPV4_MROUTE      0x20
 528#define RTMGRP_IPV4_ROUTE       0x40
 529#define RTMGRP_IPV4_RULE        0x80
 530
 531#define RTMGRP_IPV6_IFADDR      0x100
 532#define RTMGRP_IPV6_MROUTE      0x200
 533#define RTMGRP_IPV6_ROUTE       0x400
 534#define RTMGRP_IPV6_IFINFO      0x800
 535
 536#define RTMGRP_DECnet_IFADDR    0x1000
 537#define RTMGRP_DECnet_ROUTE     0x4000
 538
 539#define RTMGRP_IPV6_PREFIX      0x20000
 540#endif
 541
 542/* RTnetlink multicast groups */
 543enum rtnetlink_groups {
 544        RTNLGRP_NONE,
 545#define RTNLGRP_NONE            RTNLGRP_NONE
 546        RTNLGRP_LINK,
 547#define RTNLGRP_LINK            RTNLGRP_LINK
 548        RTNLGRP_NOTIFY,
 549#define RTNLGRP_NOTIFY          RTNLGRP_NOTIFY
 550        RTNLGRP_NEIGH,
 551#define RTNLGRP_NEIGH           RTNLGRP_NEIGH
 552        RTNLGRP_TC,
 553#define RTNLGRP_TC              RTNLGRP_TC
 554        RTNLGRP_IPV4_IFADDR,
 555#define RTNLGRP_IPV4_IFADDR     RTNLGRP_IPV4_IFADDR
 556        RTNLGRP_IPV4_MROUTE,
 557#define RTNLGRP_IPV4_MROUTE     RTNLGRP_IPV4_MROUTE
 558        RTNLGRP_IPV4_ROUTE,
 559#define RTNLGRP_IPV4_ROUTE      RTNLGRP_IPV4_ROUTE
 560        RTNLGRP_IPV4_RULE,
 561#define RTNLGRP_IPV4_RULE       RTNLGRP_IPV4_RULE
 562        RTNLGRP_IPV6_IFADDR,
 563#define RTNLGRP_IPV6_IFADDR     RTNLGRP_IPV6_IFADDR
 564        RTNLGRP_IPV6_MROUTE,
 565#define RTNLGRP_IPV6_MROUTE     RTNLGRP_IPV6_MROUTE
 566        RTNLGRP_IPV6_ROUTE,
 567#define RTNLGRP_IPV6_ROUTE      RTNLGRP_IPV6_ROUTE
 568        RTNLGRP_IPV6_IFINFO,
 569#define RTNLGRP_IPV6_IFINFO     RTNLGRP_IPV6_IFINFO
 570        RTNLGRP_DECnet_IFADDR,
 571#define RTNLGRP_DECnet_IFADDR   RTNLGRP_DECnet_IFADDR
 572        RTNLGRP_NOP2,
 573        RTNLGRP_DECnet_ROUTE,
 574#define RTNLGRP_DECnet_ROUTE    RTNLGRP_DECnet_ROUTE
 575        RTNLGRP_DECnet_RULE,
 576#define RTNLGRP_DECnet_RULE     RTNLGRP_DECnet_RULE
 577        RTNLGRP_NOP4,
 578        RTNLGRP_IPV6_PREFIX,
 579#define RTNLGRP_IPV6_PREFIX     RTNLGRP_IPV6_PREFIX
 580        RTNLGRP_IPV6_RULE,
 581#define RTNLGRP_IPV6_RULE       RTNLGRP_IPV6_RULE
 582        RTNLGRP_ND_USEROPT,
 583#define RTNLGRP_ND_USEROPT      RTNLGRP_ND_USEROPT
 584        RTNLGRP_PHONET_IFADDR,
 585#define RTNLGRP_PHONET_IFADDR   RTNLGRP_PHONET_IFADDR
 586        RTNLGRP_PHONET_ROUTE,
 587#define RTNLGRP_PHONET_ROUTE    RTNLGRP_PHONET_ROUTE
 588        RTNLGRP_DCB,
 589#define RTNLGRP_DCB             RTNLGRP_DCB
 590        __RTNLGRP_MAX
 591};
 592#define RTNLGRP_MAX     (__RTNLGRP_MAX - 1)
 593
 594/* TC action piece */
 595struct tcamsg {
 596        unsigned char   tca_family;
 597        unsigned char   tca__pad1;
 598        unsigned short  tca__pad2;
 599};
 600#define TA_RTA(r)  ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg))))
 601#define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg))
 602#define TCA_ACT_TAB 1 /* attr type must be >=1 */       
 603#define TCAA_MAX 1
 604
 605/* New extended info filters for IFLA_EXT_MASK */
 606#define RTEXT_FILTER_VF         (1 << 0)
 607
 608/* End of information exported to user level */
 609
 610#ifdef __KERNEL__
 611
 612#include <linux/mutex.h>
 613#include <linux/netdevice.h>
 614
 615static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str)
 616{
 617        int len = strlen(str) + 1;
 618        return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len);
 619}
 620
 621extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo);
 622extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid);
 623extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid,
 624                        u32 group, struct nlmsghdr *nlh, gfp_t flags);
 625extern void rtnl_set_sk_err(struct net *net, u32 group, int error);
 626extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics);
 627extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst,
 628                              u32 id, u32 ts, u32 tsage, long expires,
 629                              u32 error);
 630
 631extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data);
 632
 633#define RTA_PUT(skb, attrtype, attrlen, data) \
 634({      if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
 635                 goto rtattr_failure; \
 636        __rta_fill(skb, attrtype, attrlen, data); }) 
 637
 638#define RTA_APPEND(skb, attrlen, data) \
 639({      if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \
 640                goto rtattr_failure; \
 641        memcpy(skb_put(skb, attrlen), data, attrlen); })
 642
 643#define RTA_PUT_NOHDR(skb, attrlen, data) \
 644({      RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
 645        memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \
 646               RTA_ALIGN(attrlen) - attrlen); })
 647
 648#define RTA_PUT_U8(skb, attrtype, value) \
 649({      u8 _tmp = (value); \
 650        RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); })
 651
 652#define RTA_PUT_U16(skb, attrtype, value) \
 653({      u16 _tmp = (value); \
 654        RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); })
 655
 656#define RTA_PUT_U32(skb, attrtype, value) \
 657({      u32 _tmp = (value); \
 658        RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); })
 659
 660#define RTA_PUT_U64(skb, attrtype, value) \
 661({      u64 _tmp = (value); \
 662        RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); })
 663
 664#define RTA_PUT_SECS(skb, attrtype, value) \
 665        RTA_PUT_U64(skb, attrtype, (value) / HZ)
 666
 667#define RTA_PUT_MSECS(skb, attrtype, value) \
 668        RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value))
 669
 670#define RTA_PUT_STRING(skb, attrtype, value) \
 671        RTA_PUT(skb, attrtype, strlen(value) + 1, value)
 672
 673#define RTA_PUT_FLAG(skb, attrtype) \
 674        RTA_PUT(skb, attrtype, 0, NULL);
 675
 676#define RTA_NEST(skb, type) \
 677({      struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
 678        RTA_PUT(skb, type, 0, NULL); \
 679        __start;  })
 680
 681#define RTA_NEST_END(skb, start) \
 682({      (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
 683        (skb)->len; })
 684
 685#define RTA_NEST_COMPAT(skb, type, attrlen, data) \
 686({      struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \
 687        RTA_PUT(skb, type, attrlen, data); \
 688        RTA_NEST(skb, type); \
 689        __start; })
 690
 691#define RTA_NEST_COMPAT_END(skb, start) \
 692({      struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \
 693        (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \
 694        RTA_NEST_END(skb, __nest); \
 695        (skb)->len; })
 696
 697#define RTA_NEST_CANCEL(skb, start) \
 698({      if (start) \
 699                skb_trim(skb, (unsigned char *) (start) - (skb)->data); \
 700        -1; })
 701
 702#define RTA_GET_U8(rta) \
 703({      if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \
 704                goto rtattr_failure; \
 705        *(u8 *) RTA_DATA(rta); })
 706
 707#define RTA_GET_U16(rta) \
 708({      if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \
 709                goto rtattr_failure; \
 710        *(u16 *) RTA_DATA(rta); })
 711
 712#define RTA_GET_U32(rta) \
 713({      if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \
 714                goto rtattr_failure; \
 715        *(u32 *) RTA_DATA(rta); })
 716
 717#define RTA_GET_U64(rta) \
 718({      u64 _tmp; \
 719        if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \
 720                goto rtattr_failure; \
 721        memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \
 722        _tmp; })
 723
 724#define RTA_GET_FLAG(rta) (!!(rta))
 725
 726#define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ)
 727#define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta)))
 728                
 729static inline struct rtattr *
 730__rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
 731{
 732        struct rtattr *rta;
 733        int size = RTA_LENGTH(attrlen);
 734
 735        rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
 736        rta->rta_type = attrtype;
 737        rta->rta_len = size;
 738        memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
 739        return rta;
 740}
 741
 742#define __RTA_PUT(skb, attrtype, attrlen) \
 743({      if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \
 744                goto rtattr_failure; \
 745        __rta_reserve(skb, attrtype, attrlen); })
 746
 747extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change);
 748
 749/* RTNL is used as a global lock for all changes to network configuration  */
 750extern void rtnl_lock(void);
 751extern void rtnl_unlock(void);
 752extern int rtnl_trylock(void);
 753extern int rtnl_is_locked(void);
 754#ifdef CONFIG_PROVE_LOCKING
 755extern int lockdep_rtnl_is_held(void);
 756#endif /* #ifdef CONFIG_PROVE_LOCKING */
 757
 758/**
 759 * rcu_dereference_rtnl - rcu_dereference with debug checking
 760 * @p: The pointer to read, prior to dereferencing
 761 *
 762 * Do an rcu_dereference(p), but check caller either holds rcu_read_lock()
 763 * or RTNL. Note : Please prefer rtnl_dereference() or rcu_dereference()
 764 */
 765#define rcu_dereference_rtnl(p)                                 \
 766        rcu_dereference_check(p, lockdep_rtnl_is_held())
 767
 768/**
 769 * rtnl_dereference - fetch RCU pointer when updates are prevented by RTNL
 770 * @p: The pointer to read, prior to dereferencing
 771 *
 772 * Return the value of the specified RCU-protected pointer, but omit
 773 * both the smp_read_barrier_depends() and the ACCESS_ONCE(), because
 774 * caller holds RTNL.
 775 */
 776#define rtnl_dereference(p)                                     \
 777        rcu_dereference_protected(p, lockdep_rtnl_is_held())
 778
 779static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev)
 780{
 781        return rtnl_dereference(dev->ingress_queue);
 782}
 783
 784extern struct netdev_queue *dev_ingress_queue_create(struct net_device *dev);
 785
 786extern void rtnetlink_init(void);
 787extern void __rtnl_unlock(void);
 788
 789#define ASSERT_RTNL() do { \
 790        if (unlikely(!rtnl_is_locked())) { \
 791                printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \
 792                       __FILE__,  __LINE__); \
 793                dump_stack(); \
 794        } \
 795} while(0)
 796
 797static inline u32 rtm_get_table(struct rtattr **rta, u8 table)
 798{
 799        return RTA_GET_U32(rta[RTA_TABLE-1]);
 800rtattr_failure:
 801        return table;
 802}
 803
 804#endif /* __KERNEL__ */
 805
 806
 807#endif  /* __LINUX_RTNETLINK_H */
 808