1 /* Zebra common header.
2 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Kunihiro Ishiguro
4 This file is part of GNU Zebra.
6 GNU Zebra is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the
8 Free Software Foundation; either version 2, or (at your option) any
11 GNU Zebra is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Zebra; see the file COPYING. If not, write to the Free
18 Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 #endif /* HAVE_CONFIG_H */
30 typedef unsigned int u_int32_t;
31 typedef unsigned short u_int16_t;
32 typedef unsigned char u_int8_t;
35 #ifndef HAVE_SOCKLEN_T
36 typedef int socklen_t;
37 #endif /* HAVE_SOCKLEN_T */
52 #endif /* HAVE_STROPTS_H */
53 #ifdef HAVE_SYS_SELECT_H
54 #include <sys/select.h>
55 #endif /* HAVE_SYS_SELECT_H */
57 #include <sys/types.h>
58 #include <sys/param.h>
59 #ifdef HAVE_SYS_SYSCTL_H
61 #include <linux/types.h>
63 #include <sys/sysctl.h>
64 #endif /* HAVE_SYS_SYSCTL_H */
65 #include <sys/ioctl.h>
66 #ifdef HAVE_SYS_CONF_H
68 #endif /* HAVE_SYS_CONF_H */
69 #ifdef HAVE_SYS_KSYM_H
71 #endif /* HAVE_SYS_KSYM_H */
73 #ifdef TIME_WITH_SYS_TIME
74 # include <sys/time.h>
77 # ifdef HAVE_SYS_TIME_H
78 # include <sys/time.h>
82 #endif /* TIME_WITH_SYS_TIME */
84 #include <sys/utsname.h>
86 #include <sys/resource.h>
87 #endif /* HAVE_RUSAGE */
90 #endif /* HAVE_LIMITS_H */
91 #ifdef HAVE_INTTYPES_H
93 #endif /* HAVE_INTTYPES_H */
97 /* primarily for __STDC_IEC_559__ with clang */
98 #ifdef HAVE_FEATURES_H
102 /* machine dependent includes */
107 /* machine dependent includes */
108 #ifdef HAVE_LINUX_VERSION_H
109 #include <linux/version.h>
110 #endif /* HAVE_LINUX_VERSION_H */
112 #ifdef HAVE_ASM_TYPES_H
113 #include <asm/types.h>
114 #endif /* HAVE_ASM_TYPES_H */
116 /* misc include group */
118 #if !(defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L)
119 /* Not C99; do we need to define va_copy? */
122 #define va_copy(DST,SRC) __va_copy(DST,SRC)
124 /* Now we are desperate; this should work on many typical platforms.
125 But this is slightly dangerous, because the standard does not require
126 va_copy to be a macro. */
127 #define va_copy(DST,SRC) memcpy(&(DST), &(SRC), sizeof(va_list))
128 #warning "Not C99 and no va_copy macro available, falling back to memcpy"
129 #endif /* __va_copy */
130 #endif /* !va_copy */
135 #include <sys/capability.h>
136 #include <sys/prctl.h>
137 #endif /* HAVE_LCAPS */
139 #ifdef HAVE_SOLARIS_CAPABILITIES
141 #endif /* HAVE_SOLARIS_CAPABILITIES */
143 /* network include group */
145 #include <sys/socket.h>
147 #ifdef HAVE_SYS_SOCKIO_H
148 #include <sys/sockio.h>
149 #endif /* HAVE_SYS_SOCKIO_H */
152 #define __APPLE_USE_RFC_3542
155 #ifdef HAVE_NETINET_IN_H
156 #include <netinet/in.h>
157 #endif /* HAVE_NETINET_IN_H */
158 #include <netinet/in_systm.h>
159 #include <netinet/ip.h>
160 #include <netinet/tcp.h>
162 #ifdef HAVE_NET_NETOPT_H
163 #include <net/netopt.h>
164 #endif /* HAVE_NET_NETOPT_H */
168 #ifdef HAVE_NET_IF_DL_H
169 #include <net/if_dl.h>
170 #endif /* HAVE_NET_IF_DL_H */
172 #ifdef HAVE_NET_IF_VAR_H
173 #include <net/if_var.h>
174 #endif /* HAVE_NET_IF_VAR_H */
176 #ifdef HAVE_NET_ROUTE_H
177 #include <net/route.h>
178 #endif /* HAVE_NET_ROUTE_H */
181 #include <linux/netlink.h>
182 #include <linux/rtnetlink.h>
183 #include <linux/filter.h>
185 #define RT_TABLE_MAIN 0
186 #endif /* HAVE_NETLINK */
190 #endif /* HAVE_NETDB_H */
192 #include <arpa/inet.h>
194 #ifdef HAVE_INET_ND_H
196 #endif /* HAVE_INET_ND_H */
198 #ifdef HAVE_NETINET_IN_VAR_H
199 #include <netinet/in_var.h>
200 #endif /* HAVE_NETINET_IN_VAR_H */
202 #ifdef HAVE_NETINET6_IN6_VAR_H
203 #include <netinet6/in6_var.h>
204 #endif /* HAVE_NETINET6_IN6_VAR_H */
206 #ifdef HAVE_NETINET_IN6_VAR_H
207 #include <netinet/in6_var.h>
208 #endif /* HAVE_NETINET_IN6_VAR_H */
210 #ifdef HAVE_NETINET6_IN_H
211 #include <netinet6/in.h>
212 #endif /* HAVE_NETINET6_IN_H */
215 #ifdef HAVE_NETINET6_IP6_H
216 #include <netinet6/ip6.h>
217 #endif /* HAVE_NETINET6_IP6_H */
219 #ifdef HAVE_NETINET_ICMP6_H
220 #include <netinet/icmp6.h>
221 #endif /* HAVE_NETINET_ICMP6_H */
223 #ifdef HAVE_NETINET6_ND6_H
224 #include <netinet6/nd6.h>
225 #endif /* HAVE_NETINET6_ND6_H */
227 /* Some systems do not define UINT32_MAX, etc.. from inttypes.h
228 * e.g. this makes life easier for FBSD 4.11 users.
231 #define INT8_MAX (127)
234 #define INT16_MAX (32767)
237 #define INT32_MAX (2147483647)
240 #define UINT8_MAX (255U)
243 #define UINT16_MAX (65535U)
246 #define UINT32_MAX (4294967295U)
249 #ifdef HAVE_GLIBC_BACKTRACE
250 #include <execinfo.h>
251 #endif /* HAVE_GLIBC_BACKTRACE */
253 /* Local includes: */
254 #if !(defined(__GNUC__) || defined(VTYSH_EXTRACT_PL))
255 #define __attribute__(x)
256 #endif /* !__GNUC__ || VTYSH_EXTRACT_PL */
262 #ifdef HAVE_BROKEN_CMSG_FIRSTHDR
263 /* This bug is present in Solaris 8 and pre-patch Solaris 9 <sys/socket.h>;
264 please refer to http://bugzilla.quagga.net/show_bug.cgi?id=142 */
266 /* Check that msg_controllen is large enough. */
267 #define ZCMSG_FIRSTHDR(mhdr) \
268 (((size_t)((mhdr)->msg_controllen) >= sizeof(struct cmsghdr)) ? \
269 CMSG_FIRSTHDR(mhdr) : (struct cmsghdr *)NULL)
271 #warning "CMSG_FIRSTHDR is broken on this platform, using a workaround"
273 #else /* HAVE_BROKEN_CMSG_FIRSTHDR */
274 #define ZCMSG_FIRSTHDR(M) CMSG_FIRSTHDR(M)
275 #endif /* HAVE_BROKEN_CMSG_FIRSTHDR */
280 * RFC 3542 defines several macros for using struct cmsghdr.
281 * Here, we define those that are not present
285 * Internal defines, for use only in this file.
286 * These are likely wrong on other than ILP32 machines, so warn.
288 #ifndef _CMSG_DATA_ALIGN
289 #define _CMSG_DATA_ALIGN(n) (((n) + 3) & ~3)
290 #endif /* _CMSG_DATA_ALIGN */
292 #ifndef _CMSG_HDR_ALIGN
293 #define _CMSG_HDR_ALIGN(n) (((n) + 3) & ~3)
294 #endif /* _CMSG_HDR_ALIGN */
297 * CMSG_SPACE and CMSG_LEN are required in RFC3542, but were new in that
301 #define CMSG_SPACE(l) (_CMSG_DATA_ALIGN(sizeof(struct cmsghdr)) + \
303 #warning "assuming 4-byte alignment for CMSG_SPACE"
304 #endif /* CMSG_SPACE */
308 #define CMSG_LEN(l) (_CMSG_DATA_ALIGN(sizeof(struct cmsghdr)) + (l))
309 #warning "assuming 4-byte alignment for CMSG_LEN"
310 #endif /* CMSG_LEN */
313 /* The definition of struct in_pktinfo is missing in old version of
314 GLIBC 2.1 (Redhat 6.1). */
315 #if defined (GNU_LINUX) && ! defined (HAVE_STRUCT_IN_PKTINFO)
319 struct in_addr ipi_spec_dst;
320 struct in_addr ipi_addr;
325 * OSPF Fragmentation / fragmented writes
327 * ospfd can support writing fragmented packets, for cases where
328 * kernel will not fragment IP_HDRINCL and/or multicast destined
329 * packets (ie TTBOMK all kernels, BSD, SunOS, Linux). However,
330 * SunOS, probably BSD too, clobber the user supplied IP ID and IP
331 * flags fields, hence user-space fragmentation will not work.
332 * Only Linux is known to leave IP header unmolested.
333 * Further, fragmentation really should be done the kernel, which already
334 * supports it, and which avoids nasty IP ID state problems.
336 * Fragmentation of OSPF packets can be required on networks with router
337 * with many many interfaces active in one area, or on networks with links
341 #define WANT_OSPF_WRITE_FRAGMENT
345 * IP_HDRINCL / struct ip byte order
347 * Linux: network byte order
348 * *BSD: network, except for length and offset. (cf Stevens)
349 * SunOS: nominally as per BSD. but bug: network order on LE.
350 * OpenBSD: network byte order, apart from older versions which are as per
353 #if defined(__NetBSD__) \
354 || (defined(__FreeBSD__) && (__FreeBSD_version < 1100030)) \
355 || (defined(__OpenBSD__) && (OpenBSD < 200311)) \
356 || (defined(__APPLE__)) \
357 || (defined(SUNOS_5) && defined(WORDS_BIGENDIAN))
358 #define HAVE_IP_HDRINCL_BSD_ORDER
361 /* Define BYTE_ORDER, if not defined. Useful for compiler conditional
362 * code, rather than preprocessor conditional.
363 * Not all the world has this BSD define.
366 #define BIG_ENDIAN 4321 /* least-significant byte first (vax, pc) */
367 #define LITTLE_ENDIAN 1234 /* most-significant byte first (IBM, net) */
368 #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */
370 #if defined(WORDS_BIGENDIAN)
371 #define BYTE_ORDER BIG_ENDIAN
372 #else /* !WORDS_BIGENDIAN */
373 #define BYTE_ORDER LITTLE_ENDIAN
374 #endif /* WORDS_BIGENDIAN */
376 #endif /* ndef BYTE_ORDER */
378 /* MAX / MIN are not commonly defined, but useful */
381 ({ typeof (a) _a = (a); \
382 typeof (b) _b = (b); \
383 _a > _b ? _a : _b; })
387 ({ typeof (a) _a = (a); \
388 typeof (b) _b = (b); \
389 _a < _b ? _a : _b; })
392 #define ZEBRA_NUM_OF(x) (sizeof (x) / sizeof (x[0]))
394 /* For old definition. */
395 #ifndef IN6_ARE_ADDR_EQUAL
396 #define IN6_ARE_ADDR_EQUAL IN6_IS_ADDR_EQUAL
397 #endif /* IN6_ARE_ADDR_EQUAL */
399 /* default zebra TCP port for zclient */
400 #define ZEBRA_PORT 2600
402 /* Zebra message types. */
403 #define ZEBRA_INTERFACE_ADD 1
404 #define ZEBRA_INTERFACE_DELETE 2
405 #define ZEBRA_INTERFACE_ADDRESS_ADD 3
406 #define ZEBRA_INTERFACE_ADDRESS_DELETE 4
407 #define ZEBRA_INTERFACE_UP 5
408 #define ZEBRA_INTERFACE_DOWN 6
409 #define ZEBRA_IPV4_ROUTE_ADD 7
410 #define ZEBRA_IPV4_ROUTE_DELETE 8
411 #define ZEBRA_IPV6_ROUTE_ADD 9
412 #define ZEBRA_IPV6_ROUTE_DELETE 10
413 #define ZEBRA_REDISTRIBUTE_ADD 11
414 #define ZEBRA_REDISTRIBUTE_DELETE 12
415 #define ZEBRA_REDISTRIBUTE_DEFAULT_ADD 13
416 #define ZEBRA_REDISTRIBUTE_DEFAULT_DELETE 14
417 #define ZEBRA_IPV4_NEXTHOP_LOOKUP 15
418 #define ZEBRA_IPV6_NEXTHOP_LOOKUP 16
419 #define ZEBRA_IPV4_IMPORT_LOOKUP 17
420 #define ZEBRA_IPV6_IMPORT_LOOKUP 18
421 #define ZEBRA_INTERFACE_RENAME 19
422 #define ZEBRA_ROUTER_ID_ADD 20
423 #define ZEBRA_ROUTER_ID_DELETE 21
424 #define ZEBRA_ROUTER_ID_UPDATE 22
425 #define ZEBRA_HELLO 23
426 #define ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB 24
427 #define ZEBRA_VRF_UNREGISTER 25
428 #define ZEBRA_INTERFACE_LINK_PARAMS 26
429 #define ZEBRA_NEXTHOP_REGISTER 27
430 #define ZEBRA_NEXTHOP_UNREGISTER 28
431 #define ZEBRA_NEXTHOP_UPDATE 29
432 #define ZEBRA_MESSAGE_MAX 30
434 /* Marker value used in new Zserv, in the byte location corresponding
435 * the command value in the old zserv header. To allow old and new
436 * Zserv headers to be distinguished from each other.
438 #define ZEBRA_HEADER_MARKER 255
440 /* Zebra route's types are defined in route_types.h */
441 #include "route_types.h"
443 /* Note: whenever a new route-type or zserv-command is added the
444 * corresponding {command,route}_types[] table in lib/log.c MUST be
447 /* Map a route type to a string. For example, ZEBRA_ROUTE_RIPNG -> "ripng". */
448 extern const char *zebra_route_string(unsigned int route_type);
449 /* Map a route type to a char. For example, ZEBRA_ROUTE_RIPNG -> 'R'. */
450 extern char zebra_route_char(unsigned int route_type);
451 /* Map a zserv command type to the same string,
452 * e.g. ZEBRA_INTERFACE_ADD -> "ZEBRA_INTERFACE_ADD" */
453 /* Map a protocol name to its number. e.g. ZEBRA_ROUTE_BGP->9*/
454 extern int proto_name2num(const char *s);
455 /* Map redistribute X argument to protocol number.
456 * unlike proto_name2num, this accepts shorthands and takes
457 * an AFI value to restrict input */
458 extern int proto_redistnum(int afi, const char *s);
460 extern const char *zserv_command_string (unsigned int command);
462 /* Error codes of zebra. */
463 #define ZEBRA_ERR_NOERROR 0
464 #define ZEBRA_ERR_RTEXIST -1
465 #define ZEBRA_ERR_RTUNREACH -2
466 #define ZEBRA_ERR_EPERM -3
467 #define ZEBRA_ERR_RTNOEXIST -4
468 #define ZEBRA_ERR_KERNEL -5
470 /* Zebra message flags */
471 #define ZEBRA_FLAG_INTERNAL 0x01
472 #define ZEBRA_FLAG_SELFROUTE 0x02
473 #define ZEBRA_FLAG_BLACKHOLE 0x04
474 #define ZEBRA_FLAG_IBGP 0x08
475 #define ZEBRA_FLAG_SELECTED 0x10
476 #define ZEBRA_FLAG_FIB_OVERRIDE 0x20
477 #define ZEBRA_FLAG_STATIC 0x40
478 #define ZEBRA_FLAG_REJECT 0x80
480 /* Zebra nexthop flags. */
481 #define ZEBRA_NEXTHOP_IFINDEX 1
482 #define ZEBRA_NEXTHOP_IFNAME 2
483 #define ZEBRA_NEXTHOP_IPV4 3
484 #define ZEBRA_NEXTHOP_IPV4_IFINDEX 4
485 #define ZEBRA_NEXTHOP_IPV4_IFNAME 5
486 #define ZEBRA_NEXTHOP_IPV6 6
487 #define ZEBRA_NEXTHOP_IPV6_IFINDEX 7
488 #define ZEBRA_NEXTHOP_IPV6_IFNAME 8
489 #define ZEBRA_NEXTHOP_BLACKHOLE 9
491 #ifndef INADDR_LOOPBACK
492 #define INADDR_LOOPBACK 0x7f000001 /* Internet address 127.0.0.1. */
495 /* Address family numbers from RFC1700. */
499 AFI_ETHER = 3, /* RFC 1700 has "6" for 802.* */
503 /* Subsequent Address Family Identifier. */
504 #define SAFI_UNICAST 1
505 #define SAFI_MULTICAST 2
506 #define SAFI_RESERVED_3 3
507 #define SAFI_MPLS_VPN 4
508 #define SAFI_ENCAP 7 /* per IANA */
511 /* Default Administrative Distance of each protocol. */
512 #define ZEBRA_KERNEL_DISTANCE_DEFAULT 0
513 #define ZEBRA_CONNECT_DISTANCE_DEFAULT 0
514 #define ZEBRA_STATIC_DISTANCE_DEFAULT 1
515 #define ZEBRA_RIP_DISTANCE_DEFAULT 120
516 #define ZEBRA_RIPNG_DISTANCE_DEFAULT 120
517 #define ZEBRA_OSPF_DISTANCE_DEFAULT 110
518 #define ZEBRA_OSPF6_DISTANCE_DEFAULT 110
519 #define ZEBRA_ISIS_DISTANCE_DEFAULT 115
520 #define ZEBRA_IBGP_DISTANCE_DEFAULT 200
521 #define ZEBRA_EBGP_DISTANCE_DEFAULT 20
523 /* Flag manipulation macros. */
524 #define CHECK_FLAG(V,F) ((V) & (F))
525 #define SET_FLAG(V,F) (V) |= (F)
526 #define UNSET_FLAG(V,F) (V) &= ~(F)
527 #define RESET_FLAG(V) (V) = 0
529 typedef u_int8_t safi_t;
531 /* Zebra types. Used in Zserv message header. */
532 typedef u_int16_t zebra_size_t;
533 typedef u_int16_t zebra_command_t;
536 typedef u_int16_t vrf_id_t;
538 typedef uint32_t route_tag_t;
539 #define ROUTE_TAG_MAX UINT32_MAX
541 #endif /* _ZEBRA_H */