Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __LINUX_RTNETLINK_H |
| 2 | #define __LINUX_RTNETLINK_H |
| 3 | |
Jaswinder Singh Rajput | 541c94f | 2009-01-30 22:40:32 +0530 | [diff] [blame] | 4 | #include <linux/types.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 5 | #include <linux/netlink.h> |
YOSHIFUJI Hideaki | cbde166 | 2006-09-27 22:40:19 -0700 | [diff] [blame] | 6 | #include <linux/if_link.h> |
Thomas Graf | e07bca8 | 2006-12-07 23:49:45 -0800 | [diff] [blame] | 7 | #include <linux/if_addr.h> |
| 8 | #include <linux/neighbour.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 9 | |
Patrick McHardy | 25239ce | 2010-04-26 16:02:05 +0200 | [diff] [blame] | 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 |
Patrick McHardy | d1db275 | 2010-05-11 14:40:55 +0200 | [diff] [blame^] | 14 | #define RTNL_FAMILY_IP6MR 129 |
| 15 | #define RTNL_FAMILY_MAX 129 |
Patrick McHardy | 25239ce | 2010-04-26 16:02:05 +0200 | [diff] [blame] | 16 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | /**** |
| 18 | * Routing/neighbour discovery messages. |
| 19 | ****/ |
| 20 | |
| 21 | /* Types of messages */ |
| 22 | |
| 23 | enum { |
| 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | |
| 95 | RTM_GETMULTICAST = 58, |
| 96 | #define RTM_GETMULTICAST RTM_GETMULTICAST |
| 97 | |
| 98 | RTM_GETANYCAST = 62, |
| 99 | #define RTM_GETANYCAST RTM_GETANYCAST |
| 100 | |
Thomas Graf | c7fb64d | 2005-06-18 22:50:55 -0700 | [diff] [blame] | 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 | |
Pierre Ynard | 3191057 | 2007-10-10 21:22:05 -0700 | [diff] [blame] | 108 | RTM_NEWNDUSEROPT = 68, |
| 109 | #define RTM_NEWNDUSEROPT RTM_NEWNDUSEROPT |
| 110 | |
YOSHIFUJI Hideaki | 2a8cc6c | 2007-11-14 15:56:23 +0900 | [diff] [blame] | 111 | RTM_NEWADDRLABEL = 72, |
| 112 | #define RTM_NEWADDRLABEL RTM_NEWADDRLABEL |
| 113 | RTM_DELADDRLABEL, |
Tushar Gohad | 5d5d9c9 | 2009-09-09 03:42:23 -0700 | [diff] [blame] | 114 | #define RTM_DELADDRLABEL RTM_DELADDRLABEL |
YOSHIFUJI Hideaki | 2a8cc6c | 2007-11-14 15:56:23 +0900 | [diff] [blame] | 115 | RTM_GETADDRLABEL, |
| 116 | #define RTM_GETADDRLABEL RTM_GETADDRLABEL |
| 117 | |
Alexander Duyck | 2f90b86 | 2008-11-20 20:52:10 -0800 | [diff] [blame] | 118 | RTM_GETDCB = 78, |
| 119 | #define RTM_GETDCB RTM_GETDCB |
| 120 | RTM_SETDCB, |
| 121 | #define RTM_SETDCB RTM_SETDCB |
| 122 | |
Thomas Graf | d775fc0 | 2005-05-03 14:27:35 -0700 | [diff] [blame] | 123 | __RTM_MAX, |
| 124 | #define RTM_MAX (((__RTM_MAX + 3) & ~3) - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | }; |
| 126 | |
Thomas Graf | db46edc | 2005-05-03 14:29:39 -0700 | [diff] [blame] | 127 | #define RTM_NR_MSGTYPES (RTM_MAX + 1 - RTM_BASE) |
| 128 | #define RTM_NR_FAMILIES (RTM_NR_MSGTYPES >> 2) |
Thomas Graf | f90a0a7 | 2005-05-03 14:29:00 -0700 | [diff] [blame] | 129 | #define RTM_FAM(cmd) (((cmd) - RTM_BASE) >> 2) |
| 130 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 137 | struct rtattr { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 163 | struct rtmsg { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 179 | enum { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Alpt | 99cae7f | 2006-03-20 22:26:17 -0800 | [diff] [blame] | 223 | #define RTPROT_NTK 15 /* Netsukuku */ |
Stephen Hemminger | 2e1ab63 | 2009-03-19 23:49:41 -0700 | [diff] [blame] | 224 | #define RTPROT_DHCP 16 /* DHCP client */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 237 | enum rt_scope_t { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 255 | enum rt_class_t { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | RT_TABLE_UNSPEC=0, |
| 257 | /* User defined values */ |
Krzysztof Piotr Oledzki | 709772e | 2008-06-10 15:44:49 -0700 | [diff] [blame] | 258 | RT_TABLE_COMPAT=252, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | RT_TABLE_DEFAULT=253, |
| 260 | RT_TABLE_MAIN=254, |
| 261 | RT_TABLE_LOCAL=255, |
Patrick McHardy | b801f54 | 2006-08-10 23:12:34 -0700 | [diff] [blame] | 262 | RT_TABLE_MAX=0xFFFFFFFF |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
| 265 | |
| 266 | /* Routing message attributes */ |
| 267 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 268 | enum rtattr_type_t { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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, |
Thomas Graf | 1f9d11c | 2008-06-03 16:36:27 -0700 | [diff] [blame] | 279 | RTA_PROTOINFO, /* no longer used */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | RTA_FLOW, |
| 281 | RTA_CACHEINFO, |
Thomas Graf | 1f9d11c | 2008-06-03 16:36:27 -0700 | [diff] [blame] | 282 | RTA_SESSION, /* no longer used */ |
David S. Miller | e06e7c6 | 2007-06-10 17:22:39 -0700 | [diff] [blame] | 283 | RTA_MP_ALGO, /* no longer used */ |
Patrick McHardy | 9e762a4 | 2006-08-10 23:09:48 -0700 | [diff] [blame] | 284 | RTA_TABLE, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | __RTA_MAX |
| 286 | }; |
| 287 | |
| 288 | #define RTA_MAX (__RTA_MAX - 1) |
| 289 | |
| 290 | #define RTM_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct rtmsg)))) |
| 291 | #define RTM_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct rtmsg)) |
| 292 | |
| 293 | /* RTM_MULTIPATH --- array of struct rtnexthop. |
| 294 | * |
| 295 | * "struct rtnexthop" describes all necessary nexthop information, |
| 296 | * i.e. parameters of path to a destination via this nexthop. |
| 297 | * |
| 298 | * At the moment it is impossible to set different prefsrc, mtu, window |
| 299 | * and rtt for different paths from multipath. |
| 300 | */ |
| 301 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 302 | struct rtnexthop { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 328 | struct rta_cacheinfo { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 343 | enum { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | RTAX_UNSPEC, |
| 345 | #define RTAX_UNSPEC RTAX_UNSPEC |
| 346 | RTAX_LOCK, |
| 347 | #define RTAX_LOCK RTAX_LOCK |
| 348 | RTAX_MTU, |
| 349 | #define RTAX_MTU RTAX_MTU |
| 350 | RTAX_WINDOW, |
| 351 | #define RTAX_WINDOW RTAX_WINDOW |
| 352 | RTAX_RTT, |
| 353 | #define RTAX_RTT RTAX_RTT |
| 354 | RTAX_RTTVAR, |
| 355 | #define RTAX_RTTVAR RTAX_RTTVAR |
| 356 | RTAX_SSTHRESH, |
| 357 | #define RTAX_SSTHRESH RTAX_SSTHRESH |
| 358 | RTAX_CWND, |
| 359 | #define RTAX_CWND RTAX_CWND |
| 360 | RTAX_ADVMSS, |
| 361 | #define RTAX_ADVMSS RTAX_ADVMSS |
| 362 | RTAX_REORDERING, |
| 363 | #define RTAX_REORDERING RTAX_REORDERING |
| 364 | RTAX_HOPLIMIT, |
| 365 | #define RTAX_HOPLIMIT RTAX_HOPLIMIT |
| 366 | RTAX_INITCWND, |
| 367 | #define RTAX_INITCWND RTAX_INITCWND |
| 368 | RTAX_FEATURES, |
| 369 | #define RTAX_FEATURES RTAX_FEATURES |
David S. Miller | 05bb1fa | 2007-08-30 22:10:28 -0700 | [diff] [blame] | 370 | RTAX_RTO_MIN, |
| 371 | #define RTAX_RTO_MIN RTAX_RTO_MIN |
laurent chavey | 31d1292 | 2009-12-15 11:15:28 +0000 | [diff] [blame] | 372 | RTAX_INITRWND, |
| 373 | #define RTAX_INITRWND RTAX_INITRWND |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | __RTAX_MAX |
| 375 | }; |
| 376 | |
| 377 | #define RTAX_MAX (__RTAX_MAX - 1) |
| 378 | |
| 379 | #define RTAX_FEATURE_ECN 0x00000001 |
David S. Miller | bb5b7c1 | 2009-12-15 20:56:42 -0800 | [diff] [blame] | 380 | #define RTAX_FEATURE_SACK 0x00000002 |
| 381 | #define RTAX_FEATURE_TIMESTAMP 0x00000004 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | #define RTAX_FEATURE_ALLFRAG 0x00000008 |
| 383 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 384 | struct rta_session { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | __u8 proto; |
Patrick McHardy | 8a47077 | 2005-06-28 12:56:45 -0700 | [diff] [blame] | 386 | __u8 pad1; |
| 387 | __u16 pad2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | /**** |
| 406 | * General form of address family dependent message. |
| 407 | ****/ |
| 408 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 409 | struct rtgenmsg { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | unsigned char rtgen_family; |
| 411 | }; |
| 412 | |
| 413 | /***************************************************************** |
| 414 | * Link layer specific messages. |
| 415 | ****/ |
| 416 | |
| 417 | /* struct ifinfomsg |
| 418 | * passes link level specific information, not dependent |
| 419 | * on network protocol. |
| 420 | */ |
| 421 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 422 | struct ifinfomsg { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | unsigned char ifi_family; |
| 424 | unsigned char __ifi_pad; |
| 425 | unsigned short ifi_type; /* ARPHRD_* */ |
| 426 | int ifi_index; /* Link index */ |
| 427 | unsigned ifi_flags; /* IFF_* flags */ |
| 428 | unsigned ifi_change; /* IFF_* change mask */ |
| 429 | }; |
| 430 | |
| 431 | /******************************************************************** |
| 432 | * prefix information |
| 433 | ****/ |
| 434 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 435 | struct prefixmsg { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | unsigned char prefix_family; |
Patrick McHardy | 8a47077 | 2005-06-28 12:56:45 -0700 | [diff] [blame] | 437 | unsigned char prefix_pad1; |
| 438 | unsigned short prefix_pad2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | int prefix_ifindex; |
| 440 | unsigned char prefix_type; |
| 441 | unsigned char prefix_len; |
| 442 | unsigned char prefix_flags; |
Patrick McHardy | 8a47077 | 2005-06-28 12:56:45 -0700 | [diff] [blame] | 443 | unsigned char prefix_pad3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | }; |
| 445 | |
| 446 | enum |
| 447 | { |
| 448 | PREFIX_UNSPEC, |
| 449 | PREFIX_ADDRESS, |
| 450 | PREFIX_CACHEINFO, |
| 451 | __PREFIX_MAX |
| 452 | }; |
| 453 | |
| 454 | #define PREFIX_MAX (__PREFIX_MAX - 1) |
| 455 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 456 | struct prefix_cacheinfo { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | __u32 preferred_time; |
| 458 | __u32 valid_time; |
| 459 | }; |
| 460 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 461 | |
| 462 | /***************************************************************** |
| 463 | * Traffic control messages. |
| 464 | ****/ |
| 465 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 466 | struct tcmsg { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | unsigned char tcm_family; |
| 468 | unsigned char tcm__pad1; |
| 469 | unsigned short tcm__pad2; |
| 470 | int tcm_ifindex; |
| 471 | __u32 tcm_handle; |
| 472 | __u32 tcm_parent; |
| 473 | __u32 tcm_info; |
| 474 | }; |
| 475 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 476 | enum { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | TCA_UNSPEC, |
| 478 | TCA_KIND, |
| 479 | TCA_OPTIONS, |
| 480 | TCA_STATS, |
| 481 | TCA_XSTATS, |
| 482 | TCA_RATE, |
| 483 | TCA_FCNT, |
| 484 | TCA_STATS2, |
Jussi Kivilinna | 175f9c1 | 2008-07-20 00:08:47 -0700 | [diff] [blame] | 485 | TCA_STAB, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | __TCA_MAX |
| 487 | }; |
| 488 | |
| 489 | #define TCA_MAX (__TCA_MAX - 1) |
| 490 | |
| 491 | #define TCA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcmsg)))) |
| 492 | #define TCA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcmsg)) |
| 493 | |
Pierre Ynard | 3191057 | 2007-10-10 21:22:05 -0700 | [diff] [blame] | 494 | /******************************************************************** |
| 495 | * Neighbor Discovery userland options |
| 496 | ****/ |
| 497 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 498 | struct nduseroptmsg { |
Pierre Ynard | 3191057 | 2007-10-10 21:22:05 -0700 | [diff] [blame] | 499 | unsigned char nduseropt_family; |
| 500 | unsigned char nduseropt_pad1; |
| 501 | unsigned short nduseropt_opts_len; /* Total length of options */ |
Pierre Ynard | dbb2ed2 | 2007-11-12 17:58:35 -0800 | [diff] [blame] | 502 | int nduseropt_ifindex; |
Pierre Ynard | 3191057 | 2007-10-10 21:22:05 -0700 | [diff] [blame] | 503 | __u8 nduseropt_icmp_type; |
| 504 | __u8 nduseropt_icmp_code; |
| 505 | unsigned short nduseropt_pad2; |
Pierre Ynard | dbb2ed2 | 2007-11-12 17:58:35 -0800 | [diff] [blame] | 506 | unsigned int nduseropt_pad3; |
Pierre Ynard | 3191057 | 2007-10-10 21:22:05 -0700 | [diff] [blame] | 507 | /* Followed by one or more ND options */ |
| 508 | }; |
| 509 | |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 510 | enum { |
Pierre Ynard | 3191057 | 2007-10-10 21:22:05 -0700 | [diff] [blame] | 511 | NDUSEROPT_UNSPEC, |
| 512 | NDUSEROPT_SRCADDR, |
| 513 | __NDUSEROPT_MAX |
| 514 | }; |
| 515 | |
| 516 | #define NDUSEROPT_MAX (__NDUSEROPT_MAX - 1) |
| 517 | |
Patrick McHardy | ac6d439 | 2005-08-14 19:29:52 -0700 | [diff] [blame] | 518 | #ifndef __KERNEL__ |
| 519 | /* RTnetlink multicast groups - backwards compatibility for userspace */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | #define RTMGRP_LINK 1 |
| 521 | #define RTMGRP_NOTIFY 2 |
| 522 | #define RTMGRP_NEIGH 4 |
| 523 | #define RTMGRP_TC 8 |
| 524 | |
| 525 | #define RTMGRP_IPV4_IFADDR 0x10 |
| 526 | #define RTMGRP_IPV4_MROUTE 0x20 |
| 527 | #define RTMGRP_IPV4_ROUTE 0x40 |
Patrick McHardy | a5cdc03 | 2006-03-23 01:16:06 -0800 | [diff] [blame] | 528 | #define RTMGRP_IPV4_RULE 0x80 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | |
| 530 | #define RTMGRP_IPV6_IFADDR 0x100 |
| 531 | #define RTMGRP_IPV6_MROUTE 0x200 |
| 532 | #define RTMGRP_IPV6_ROUTE 0x400 |
| 533 | #define RTMGRP_IPV6_IFINFO 0x800 |
| 534 | |
| 535 | #define RTMGRP_DECnet_IFADDR 0x1000 |
| 536 | #define RTMGRP_DECnet_ROUTE 0x4000 |
| 537 | |
| 538 | #define RTMGRP_IPV6_PREFIX 0x20000 |
Patrick McHardy | ac6d439 | 2005-08-14 19:29:52 -0700 | [diff] [blame] | 539 | #endif |
| 540 | |
| 541 | /* RTnetlink multicast groups */ |
| 542 | enum rtnetlink_groups { |
| 543 | RTNLGRP_NONE, |
| 544 | #define RTNLGRP_NONE RTNLGRP_NONE |
| 545 | RTNLGRP_LINK, |
| 546 | #define RTNLGRP_LINK RTNLGRP_LINK |
| 547 | RTNLGRP_NOTIFY, |
| 548 | #define RTNLGRP_NOTIFY RTNLGRP_NOTIFY |
| 549 | RTNLGRP_NEIGH, |
| 550 | #define RTNLGRP_NEIGH RTNLGRP_NEIGH |
| 551 | RTNLGRP_TC, |
| 552 | #define RTNLGRP_TC RTNLGRP_TC |
| 553 | RTNLGRP_IPV4_IFADDR, |
| 554 | #define RTNLGRP_IPV4_IFADDR RTNLGRP_IPV4_IFADDR |
| 555 | RTNLGRP_IPV4_MROUTE, |
| 556 | #define RTNLGRP_IPV4_MROUTE RTNLGRP_IPV4_MROUTE |
| 557 | RTNLGRP_IPV4_ROUTE, |
| 558 | #define RTNLGRP_IPV4_ROUTE RTNLGRP_IPV4_ROUTE |
Patrick McHardy | a5cdc03 | 2006-03-23 01:16:06 -0800 | [diff] [blame] | 559 | RTNLGRP_IPV4_RULE, |
| 560 | #define RTNLGRP_IPV4_RULE RTNLGRP_IPV4_RULE |
Patrick McHardy | ac6d439 | 2005-08-14 19:29:52 -0700 | [diff] [blame] | 561 | RTNLGRP_IPV6_IFADDR, |
| 562 | #define RTNLGRP_IPV6_IFADDR RTNLGRP_IPV6_IFADDR |
| 563 | RTNLGRP_IPV6_MROUTE, |
| 564 | #define RTNLGRP_IPV6_MROUTE RTNLGRP_IPV6_MROUTE |
| 565 | RTNLGRP_IPV6_ROUTE, |
| 566 | #define RTNLGRP_IPV6_ROUTE RTNLGRP_IPV6_ROUTE |
| 567 | RTNLGRP_IPV6_IFINFO, |
| 568 | #define RTNLGRP_IPV6_IFINFO RTNLGRP_IPV6_IFINFO |
| 569 | RTNLGRP_DECnet_IFADDR, |
| 570 | #define RTNLGRP_DECnet_IFADDR RTNLGRP_DECnet_IFADDR |
Kristian Slavov | 6b80ebe | 2005-12-19 13:54:44 -0800 | [diff] [blame] | 571 | RTNLGRP_NOP2, |
Patrick McHardy | ac6d439 | 2005-08-14 19:29:52 -0700 | [diff] [blame] | 572 | RTNLGRP_DECnet_ROUTE, |
| 573 | #define RTNLGRP_DECnet_ROUTE RTNLGRP_DECnet_ROUTE |
Steven Whitehouse | a8731cb | 2006-08-09 15:56:46 -0700 | [diff] [blame] | 574 | RTNLGRP_DECnet_RULE, |
| 575 | #define RTNLGRP_DECnet_RULE RTNLGRP_DECnet_RULE |
Kristian Slavov | 6b80ebe | 2005-12-19 13:54:44 -0800 | [diff] [blame] | 576 | RTNLGRP_NOP4, |
Patrick McHardy | ac6d439 | 2005-08-14 19:29:52 -0700 | [diff] [blame] | 577 | RTNLGRP_IPV6_PREFIX, |
| 578 | #define RTNLGRP_IPV6_PREFIX RTNLGRP_IPV6_PREFIX |
Thomas Graf | 101367c | 2006-08-04 03:39:02 -0700 | [diff] [blame] | 579 | RTNLGRP_IPV6_RULE, |
| 580 | #define RTNLGRP_IPV6_RULE RTNLGRP_IPV6_RULE |
Pierre Ynard | 3191057 | 2007-10-10 21:22:05 -0700 | [diff] [blame] | 581 | RTNLGRP_ND_USEROPT, |
| 582 | #define RTNLGRP_ND_USEROPT RTNLGRP_ND_USEROPT |
Remi Denis-Courmont | bce7b15 | 2008-09-22 19:51:15 -0700 | [diff] [blame] | 583 | RTNLGRP_PHONET_IFADDR, |
| 584 | #define RTNLGRP_PHONET_IFADDR RTNLGRP_PHONET_IFADDR |
| 585 | RTNLGRP_PHONET_ROUTE, |
| 586 | #define RTNLGRP_PHONET_ROUTE RTNLGRP_PHONET_ROUTE |
Patrick McHardy | ac6d439 | 2005-08-14 19:29:52 -0700 | [diff] [blame] | 587 | __RTNLGRP_MAX |
| 588 | }; |
| 589 | #define RTNLGRP_MAX (__RTNLGRP_MAX - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | |
| 591 | /* TC action piece */ |
Eric Dumazet | d94d9fe | 2009-11-04 09:50:58 -0800 | [diff] [blame] | 592 | struct tcamsg { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | unsigned char tca_family; |
| 594 | unsigned char tca__pad1; |
| 595 | unsigned short tca__pad2; |
| 596 | }; |
| 597 | #define TA_RTA(r) ((struct rtattr*)(((char*)(r)) + NLMSG_ALIGN(sizeof(struct tcamsg)))) |
| 598 | #define TA_PAYLOAD(n) NLMSG_PAYLOAD(n,sizeof(struct tcamsg)) |
| 599 | #define TCA_ACT_TAB 1 /* attr type must be >=1 */ |
| 600 | #define TCAA_MAX 1 |
| 601 | |
| 602 | /* End of information exported to user level */ |
| 603 | |
| 604 | #ifdef __KERNEL__ |
| 605 | |
Stephen Hemminger | 6756ae4 | 2006-03-20 22:23:58 -0800 | [diff] [blame] | 606 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | static __inline__ int rtattr_strcmp(const struct rtattr *rta, const char *str) |
| 609 | { |
| 610 | int len = strlen(str) + 1; |
| 611 | return len > rta->rta_len || memcmp(RTA_DATA(rta), str, len); |
| 612 | } |
| 613 | |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 614 | extern int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, u32 group, int echo); |
| 615 | extern int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid); |
Pablo Neira Ayuso | 1ce85fe | 2009-02-24 23:18:28 -0800 | [diff] [blame] | 616 | extern void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, |
| 617 | u32 group, struct nlmsghdr *nlh, gfp_t flags); |
Denis V. Lunev | 97c53ca | 2007-11-19 22:26:51 -0800 | [diff] [blame] | 618 | extern void rtnl_set_sk_err(struct net *net, u32 group, int error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | extern int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics); |
Thomas Graf | e3703b3 | 2006-11-27 09:27:07 -0800 | [diff] [blame] | 620 | extern int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, |
| 621 | u32 id, u32 ts, u32 tsage, long expires, |
| 622 | u32 error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | |
| 624 | extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data); |
| 625 | |
| 626 | #define RTA_PUT(skb, attrtype, attrlen, data) \ |
| 627 | ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \ |
| 628 | goto rtattr_failure; \ |
| 629 | __rta_fill(skb, attrtype, attrlen, data); }) |
| 630 | |
Thomas Graf | d675c98 | 2005-06-23 21:00:58 -0700 | [diff] [blame] | 631 | #define RTA_APPEND(skb, attrlen, data) \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | ({ if (unlikely(skb_tailroom(skb) < (int)(attrlen))) \ |
| 633 | goto rtattr_failure; \ |
Thomas Graf | d675c98 | 2005-06-23 21:00:58 -0700 | [diff] [blame] | 634 | memcpy(skb_put(skb, attrlen), data, attrlen); }) |
| 635 | |
| 636 | #define RTA_PUT_NOHDR(skb, attrlen, data) \ |
Patrick McHardy | b3563c4 | 2005-06-28 12:54:43 -0700 | [diff] [blame] | 637 | ({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \ |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 638 | memset(skb_tail_pointer(skb) - (RTA_ALIGN(attrlen) - attrlen), 0, \ |
Patrick McHardy | b3563c4 | 2005-06-28 12:54:43 -0700 | [diff] [blame] | 639 | RTA_ALIGN(attrlen) - attrlen); }) |
Thomas Graf | 0076824 | 2005-06-18 22:50:38 -0700 | [diff] [blame] | 640 | |
Thomas Graf | 8f48bcd | 2005-06-18 22:52:36 -0700 | [diff] [blame] | 641 | #define RTA_PUT_U8(skb, attrtype, value) \ |
| 642 | ({ u8 _tmp = (value); \ |
| 643 | RTA_PUT(skb, attrtype, sizeof(u8), &_tmp); }) |
| 644 | |
| 645 | #define RTA_PUT_U16(skb, attrtype, value) \ |
| 646 | ({ u16 _tmp = (value); \ |
| 647 | RTA_PUT(skb, attrtype, sizeof(u16), &_tmp); }) |
| 648 | |
Thomas Graf | 0076824 | 2005-06-18 22:50:38 -0700 | [diff] [blame] | 649 | #define RTA_PUT_U32(skb, attrtype, value) \ |
| 650 | ({ u32 _tmp = (value); \ |
| 651 | RTA_PUT(skb, attrtype, sizeof(u32), &_tmp); }) |
| 652 | |
| 653 | #define RTA_PUT_U64(skb, attrtype, value) \ |
| 654 | ({ u64 _tmp = (value); \ |
| 655 | RTA_PUT(skb, attrtype, sizeof(u64), &_tmp); }) |
| 656 | |
| 657 | #define RTA_PUT_SECS(skb, attrtype, value) \ |
| 658 | RTA_PUT_U64(skb, attrtype, (value) / HZ) |
| 659 | |
| 660 | #define RTA_PUT_MSECS(skb, attrtype, value) \ |
| 661 | RTA_PUT_U64(skb, attrtype, jiffies_to_msecs(value)) |
| 662 | |
| 663 | #define RTA_PUT_STRING(skb, attrtype, value) \ |
| 664 | RTA_PUT(skb, attrtype, strlen(value) + 1, value) |
| 665 | |
Thomas Graf | 8f48bcd | 2005-06-18 22:52:36 -0700 | [diff] [blame] | 666 | #define RTA_PUT_FLAG(skb, attrtype) \ |
| 667 | RTA_PUT(skb, attrtype, 0, NULL); |
| 668 | |
Thomas Graf | 0076824 | 2005-06-18 22:50:38 -0700 | [diff] [blame] | 669 | #define RTA_NEST(skb, type) \ |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 670 | ({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \ |
Thomas Graf | 0076824 | 2005-06-18 22:50:38 -0700 | [diff] [blame] | 671 | RTA_PUT(skb, type, 0, NULL); \ |
| 672 | __start; }) |
| 673 | |
| 674 | #define RTA_NEST_END(skb, start) \ |
Arnaldo Carvalho de Melo | 27a884d | 2007-04-19 20:29:13 -0700 | [diff] [blame] | 675 | ({ (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \ |
Thomas Graf | 0076824 | 2005-06-18 22:50:38 -0700 | [diff] [blame] | 676 | (skb)->len; }) |
| 677 | |
Patrick McHardy | afdc323 | 2007-06-25 14:30:16 -0700 | [diff] [blame] | 678 | #define RTA_NEST_COMPAT(skb, type, attrlen, data) \ |
| 679 | ({ struct rtattr *__start = (struct rtattr *)skb_tail_pointer(skb); \ |
| 680 | RTA_PUT(skb, type, attrlen, data); \ |
| 681 | RTA_NEST(skb, type); \ |
| 682 | __start; }) |
| 683 | |
| 684 | #define RTA_NEST_COMPAT_END(skb, start) \ |
| 685 | ({ struct rtattr *__nest = (void *)(start) + NLMSG_ALIGN((start)->rta_len); \ |
| 686 | (start)->rta_len = skb_tail_pointer(skb) - (unsigned char *)(start); \ |
| 687 | RTA_NEST_END(skb, __nest); \ |
| 688 | (skb)->len; }) |
| 689 | |
Thomas Graf | 0076824 | 2005-06-18 22:50:38 -0700 | [diff] [blame] | 690 | #define RTA_NEST_CANCEL(skb, start) \ |
Thomas Graf | c52a3f8 | 2005-06-18 22:51:26 -0700 | [diff] [blame] | 691 | ({ if (start) \ |
| 692 | skb_trim(skb, (unsigned char *) (start) - (skb)->data); \ |
Thomas Graf | 0076824 | 2005-06-18 22:50:38 -0700 | [diff] [blame] | 693 | -1; }) |
| 694 | |
Thomas Graf | 8f48bcd | 2005-06-18 22:52:36 -0700 | [diff] [blame] | 695 | #define RTA_GET_U8(rta) \ |
| 696 | ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u8)) \ |
| 697 | goto rtattr_failure; \ |
| 698 | *(u8 *) RTA_DATA(rta); }) |
| 699 | |
| 700 | #define RTA_GET_U16(rta) \ |
| 701 | ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u16)) \ |
| 702 | goto rtattr_failure; \ |
| 703 | *(u16 *) RTA_DATA(rta); }) |
| 704 | |
Thomas Graf | 0076824 | 2005-06-18 22:50:38 -0700 | [diff] [blame] | 705 | #define RTA_GET_U32(rta) \ |
| 706 | ({ if (!rta || RTA_PAYLOAD(rta) < sizeof(u32)) \ |
| 707 | goto rtattr_failure; \ |
| 708 | *(u32 *) RTA_DATA(rta); }) |
| 709 | |
| 710 | #define RTA_GET_U64(rta) \ |
| 711 | ({ u64 _tmp; \ |
| 712 | if (!rta || RTA_PAYLOAD(rta) < sizeof(u64)) \ |
| 713 | goto rtattr_failure; \ |
| 714 | memcpy(&_tmp, RTA_DATA(rta), sizeof(_tmp)); \ |
| 715 | _tmp; }) |
| 716 | |
Thomas Graf | 8f48bcd | 2005-06-18 22:52:36 -0700 | [diff] [blame] | 717 | #define RTA_GET_FLAG(rta) (!!(rta)) |
| 718 | |
Thomas Graf | 0076824 | 2005-06-18 22:50:38 -0700 | [diff] [blame] | 719 | #define RTA_GET_SECS(rta) ((unsigned long) RTA_GET_U64(rta) * HZ) |
| 720 | #define RTA_GET_MSECS(rta) (msecs_to_jiffies((unsigned long) RTA_GET_U64(rta))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | |
| 722 | static inline struct rtattr * |
| 723 | __rta_reserve(struct sk_buff *skb, int attrtype, int attrlen) |
| 724 | { |
| 725 | struct rtattr *rta; |
| 726 | int size = RTA_LENGTH(attrlen); |
| 727 | |
| 728 | rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size)); |
| 729 | rta->rta_type = attrtype; |
| 730 | rta->rta_len = size; |
Patrick McHardy | b3563c4 | 2005-06-28 12:54:43 -0700 | [diff] [blame] | 731 | memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 732 | return rta; |
| 733 | } |
| 734 | |
| 735 | #define __RTA_PUT(skb, attrtype, attrlen) \ |
| 736 | ({ if (unlikely(skb_tailroom(skb) < (int)RTA_SPACE(attrlen))) \ |
| 737 | goto rtattr_failure; \ |
| 738 | __rta_reserve(skb, attrtype, attrlen); }) |
| 739 | |
| 740 | extern void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change); |
| 741 | |
Stephen Hemminger | 6756ae4 | 2006-03-20 22:23:58 -0800 | [diff] [blame] | 742 | /* RTNL is used as a global lock for all changes to network configuration */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | extern void rtnl_lock(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | extern void rtnl_unlock(void); |
Stephen Hemminger | 6756ae4 | 2006-03-20 22:23:58 -0800 | [diff] [blame] | 745 | extern int rtnl_trylock(void); |
Patrick McHardy | c9c1014 | 2008-04-23 22:10:48 -0700 | [diff] [blame] | 746 | extern int rtnl_is_locked(void); |
Paul E. McKenney | a898def | 2010-02-22 17:04:49 -0800 | [diff] [blame] | 747 | #ifdef CONFIG_PROVE_LOCKING |
| 748 | extern int lockdep_rtnl_is_held(void); |
| 749 | #endif /* #ifdef CONFIG_PROVE_LOCKING */ |
Stephen Hemminger | 6756ae4 | 2006-03-20 22:23:58 -0800 | [diff] [blame] | 750 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | extern void rtnetlink_init(void); |
Stephen Hemminger | 6756ae4 | 2006-03-20 22:23:58 -0800 | [diff] [blame] | 752 | extern void __rtnl_unlock(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | |
| 754 | #define ASSERT_RTNL() do { \ |
Patrick McHardy | c9c1014 | 2008-04-23 22:10:48 -0700 | [diff] [blame] | 755 | if (unlikely(!rtnl_is_locked())) { \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | printk(KERN_ERR "RTNL: assertion failed at %s (%d)\n", \ |
| 757 | __FILE__, __LINE__); \ |
| 758 | dump_stack(); \ |
| 759 | } \ |
| 760 | } while(0) |
| 761 | |
Patrick McHardy | 9e762a4 | 2006-08-10 23:09:48 -0700 | [diff] [blame] | 762 | static inline u32 rtm_get_table(struct rtattr **rta, u8 table) |
| 763 | { |
| 764 | return RTA_GET_U32(rta[RTA_TABLE-1]); |
| 765 | rtattr_failure: |
| 766 | return table; |
| 767 | } |
| 768 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | #endif /* __KERNEL__ */ |
| 770 | |
| 771 | |
| 772 | #endif /* __LINUX_RTNETLINK_H */ |