| /* Zebra common header. |
| Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Kunihiro Ishiguro |
| |
| This file is part of GNU Zebra. |
| |
| GNU Zebra is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published by the |
| Free Software Foundation; either version 2, or (at your option) any |
| later version. |
| |
| GNU Zebra is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Zebra; see the file COPYING. If not, write to the Free |
| Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
| 02111-1307, USA. */ |
| |
| #ifndef _ZEBRA_H |
| #define _ZEBRA_H |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif /* HAVE_CONFIG_H */ |
| |
| #ifdef SUNOS_5 |
| #define _XPG4_2 |
| #define __EXTENSIONS__ |
| typedef unsigned int u_int32_t; |
| typedef unsigned short u_int16_t; |
| typedef unsigned char u_int8_t; |
| #endif /* SUNOS_5 */ |
| |
| #ifndef HAVE_SOCKLEN_T |
| typedef int socklen_t; |
| #endif /* HAVE_SOCKLEN_T */ |
| |
| #include <unistd.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <ctype.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <string.h> |
| #include <pwd.h> |
| #include <grp.h> |
| #ifdef HAVE_STROPTS_H |
| #include <stropts.h> |
| #endif /* HAVE_STROPTS_H */ |
| #include <sys/fcntl.h> |
| #ifdef HAVE_SYS_SELECT_H |
| #include <sys/select.h> |
| #endif /* HAVE_SYS_SELECT_H */ |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <sys/param.h> |
| #ifdef HAVE_SYS_SYSCTL_H |
| #ifdef GNU_LINUX |
| #include <linux/types.h> |
| #endif |
| #include <sys/sysctl.h> |
| #endif /* HAVE_SYS_SYSCTL_H */ |
| #include <sys/ioctl.h> |
| #ifdef HAVE_SYS_CONF_H |
| #include <sys/conf.h> |
| #endif /* HAVE_SYS_CONF_H */ |
| #ifdef HAVE_SYS_KSYM_H |
| #include <sys/ksym.h> |
| #endif /* HAVE_SYS_KSYM_H */ |
| #include <syslog.h> |
| #ifdef TIME_WITH_SYS_TIME |
| # include <sys/time.h> |
| # include <time.h> |
| #else |
| # ifdef HAVE_SYS_TIME_H |
| # include <sys/time.h> |
| # else |
| # include <time.h> |
| # endif |
| #endif /* TIME_WITH_SYS_TIME */ |
| #include <sys/uio.h> |
| #include <sys/utsname.h> |
| #ifdef HAVE_RUSAGE |
| #include <sys/resource.h> |
| #endif /* HAVE_RUSAGE */ |
| #ifdef HAVE_LIMITS_H |
| #include <limits.h> |
| #endif /* HAVE_LIMITS_H */ |
| #ifdef HAVE_INTTYPES_H |
| #include <inttypes.h> |
| #endif /* HAVE_INTTYPES_H */ |
| |
| /* machine dependent includes */ |
| #ifdef SUNOS_5 |
| #include <strings.h> |
| #endif /* SUNOS_5 */ |
| |
| /* machine dependent includes */ |
| #ifdef HAVE_LINUX_VERSION_H |
| #include <linux/version.h> |
| #endif /* HAVE_LINUX_VERSION_H */ |
| |
| #ifdef HAVE_ASM_TYPES_H |
| #include <asm/types.h> |
| #endif /* HAVE_ASM_TYPES_H */ |
| |
| /* misc include group */ |
| #include <stdarg.h> |
| #if !(defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) |
| /* Not C99; do we need to define va_copy? */ |
| #ifndef va_copy |
| #ifdef __va_copy |
| #define va_copy(DST,SRC) __va_copy(DST,SRC) |
| #else |
| /* Now we are desperate; this should work on many typical platforms. |
| But this is slightly dangerous, because the standard does not require |
| va_copy to be a macro. */ |
| #define va_copy(DST,SRC) memcpy(&(DST), &(SRC), sizeof(va_list)) |
| #warning "Not C99 and no va_copy macro available, falling back to memcpy" |
| #endif /* __va_copy */ |
| #endif /* !va_copy */ |
| #endif /* !C99 */ |
| |
| |
| #ifdef HAVE_LCAPS |
| #include <sys/capability.h> |
| #include <sys/prctl.h> |
| #endif /* HAVE_LCAPS */ |
| |
| #ifdef HAVE_SOLARIS_CAPABILITIES |
| #include <priv.h> |
| #endif /* HAVE_SOLARIS_CAPABILITIES */ |
| |
| /* network include group */ |
| |
| #include <sys/socket.h> |
| |
| #ifdef HAVE_SYS_SOCKIO_H |
| #include <sys/sockio.h> |
| #endif /* HAVE_SYS_SOCKIO_H */ |
| |
| #ifdef HAVE_NETINET_IN_H |
| #include <netinet/in.h> |
| #endif /* HAVE_NETINET_IN_H */ |
| #include <netinet/in_systm.h> |
| #include <netinet/ip.h> |
| #include <netinet/tcp.h> |
| |
| #ifdef HAVE_NET_NETOPT_H |
| #include <net/netopt.h> |
| #endif /* HAVE_NET_NETOPT_H */ |
| |
| #include <net/if.h> |
| |
| #ifdef HAVE_NET_IF_DL_H |
| #include <net/if_dl.h> |
| #endif /* HAVE_NET_IF_DL_H */ |
| |
| #ifdef HAVE_NET_IF_VAR_H |
| #include <net/if_var.h> |
| #endif /* HAVE_NET_IF_VAR_H */ |
| |
| #ifdef HAVE_NET_ROUTE_H |
| #include <net/route.h> |
| #endif /* HAVE_NET_ROUTE_H */ |
| |
| #ifdef HAVE_NETLINK |
| #include <linux/netlink.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/filter.h> |
| #include <stddef.h> |
| #else |
| #define RT_TABLE_MAIN 0 |
| #endif /* HAVE_NETLINK */ |
| |
| #ifdef HAVE_NETDB_H |
| #include <netdb.h> |
| #endif /* HAVE_NETDB_H */ |
| |
| #include <arpa/inet.h> |
| |
| #ifdef HAVE_INET_ND_H |
| #include <inet/nd.h> |
| #endif /* HAVE_INET_ND_H */ |
| |
| #ifdef HAVE_NETINET_IN_VAR_H |
| #include <netinet/in_var.h> |
| #endif /* HAVE_NETINET_IN_VAR_H */ |
| |
| #ifdef HAVE_NETINET6_IN6_VAR_H |
| #include <netinet6/in6_var.h> |
| #endif /* HAVE_NETINET6_IN6_VAR_H */ |
| |
| #ifdef HAVE_NETINET_IN6_VAR_H |
| #include <netinet/in6_var.h> |
| #endif /* HAVE_NETINET_IN6_VAR_H */ |
| |
| #ifdef HAVE_NETINET6_IN_H |
| #include <netinet6/in.h> |
| #endif /* HAVE_NETINET6_IN_H */ |
| |
| |
| #ifdef HAVE_NETINET6_IP6_H |
| #include <netinet6/ip6.h> |
| #endif /* HAVE_NETINET6_IP6_H */ |
| |
| #ifdef HAVE_NETINET_ICMP6_H |
| #include <netinet/icmp6.h> |
| #endif /* HAVE_NETINET_ICMP6_H */ |
| |
| #ifdef HAVE_NETINET6_ND6_H |
| #include <netinet6/nd6.h> |
| #endif /* HAVE_NETINET6_ND6_H */ |
| |
| /* Some systems do not define UINT32_MAX, etc.. from inttypes.h |
| * e.g. this makes life easier for FBSD 4.11 users. |
| */ |
| #ifndef INT8_MAX |
| #define INT8_MAX (127) |
| #endif |
| #ifndef INT16_MAX |
| #define INT16_MAX (32767) |
| #endif |
| #ifndef INT32_MAX |
| #define INT32_MAX (2147483647) |
| #endif |
| #ifndef UINT8_MAX |
| #define UINT8_MAX (255U) |
| #endif |
| #ifndef UINT16_MAX |
| #define UINT16_MAX (65535U) |
| #endif |
| #ifndef UINT32_MAX |
| #define UINT32_MAX (4294967295U) |
| #endif |
| |
| #ifdef HAVE_GLIBC_BACKTRACE |
| #include <execinfo.h> |
| #endif /* HAVE_GLIBC_BACKTRACE */ |
| |
| #ifdef BSDI_NRL |
| |
| #ifdef HAVE_NETINET6_IN6_H |
| #include <netinet6/in6.h> |
| #endif /* HAVE_NETINET6_IN6_H */ |
| |
| #ifdef NRL |
| #include <netinet6/in6.h> |
| #endif /* NRL */ |
| |
| #define IN6_ARE_ADDR_EQUAL IN6_IS_ADDR_EQUAL |
| |
| #endif /* BSDI_NRL */ |
| |
| /* Local includes: */ |
| #if !(defined(__GNUC__) || defined(VTYSH_EXTRACT_PL)) |
| #define __attribute__(x) |
| #endif /* !__GNUC__ || VTYSH_EXTRACT_PL */ |
| |
| #include "zassert.h" |
| #include "str.h" |
| |
| |
| #ifdef HAVE_BROKEN_CMSG_FIRSTHDR |
| /* This bug is present in Solaris 8 and pre-patch Solaris 9 <sys/socket.h>; |
| please refer to http://bugzilla.quagga.net/show_bug.cgi?id=142 */ |
| |
| /* Check that msg_controllen is large enough. */ |
| #define ZCMSG_FIRSTHDR(mhdr) \ |
| (((size_t)((mhdr)->msg_controllen) >= sizeof(struct cmsghdr)) ? \ |
| CMSG_FIRSTHDR(mhdr) : (struct cmsghdr *)NULL) |
| |
| #warning "CMSG_FIRSTHDR is broken on this platform, using a workaround" |
| |
| #else /* HAVE_BROKEN_CMSG_FIRSTHDR */ |
| #define ZCMSG_FIRSTHDR(M) CMSG_FIRSTHDR(M) |
| #endif /* HAVE_BROKEN_CMSG_FIRSTHDR */ |
| |
| |
| |
| /* |
| * RFC 3542 defines several macros for using struct cmsghdr. |
| * Here, we define those that are not present |
| */ |
| |
| /* |
| * Internal defines, for use only in this file. |
| * These are likely wrong on other than ILP32 machines, so warn. |
| */ |
| #ifndef _CMSG_DATA_ALIGN |
| #define _CMSG_DATA_ALIGN(n) (((n) + 3) & ~3) |
| #endif /* _CMSG_DATA_ALIGN */ |
| |
| #ifndef _CMSG_HDR_ALIGN |
| #define _CMSG_HDR_ALIGN(n) (((n) + 3) & ~3) |
| #endif /* _CMSG_HDR_ALIGN */ |
| |
| /* |
| * CMSG_SPACE and CMSG_LEN are required in RFC3542, but were new in that |
| * version. |
| */ |
| #ifndef CMSG_SPACE |
| #define CMSG_SPACE(l) (_CMSG_DATA_ALIGN(sizeof(struct cmsghdr)) + \ |
| _CMSG_HDR_ALIGN(l)) |
| #warning "assuming 4-byte alignment for CMSG_SPACE" |
| #endif /* CMSG_SPACE */ |
| |
| |
| #ifndef CMSG_LEN |
| #define CMSG_LEN(l) (_CMSG_DATA_ALIGN(sizeof(struct cmsghdr)) + (l)) |
| #warning "assuming 4-byte alignment for CMSG_LEN" |
| #endif /* CMSG_LEN */ |
| |
| |
| /* The definition of struct in_pktinfo is missing in old version of |
| GLIBC 2.1 (Redhat 6.1). */ |
| #if defined (GNU_LINUX) && ! defined (HAVE_STRUCT_IN_PKTINFO) |
| struct in_pktinfo |
| { |
| int ipi_ifindex; |
| struct in_addr ipi_spec_dst; |
| struct in_addr ipi_addr; |
| }; |
| #endif |
| |
| /* |
| * OSPF Fragmentation / fragmented writes |
| * |
| * ospfd can support writing fragmented packets, for cases where |
| * kernel will not fragment IP_HDRINCL and/or multicast destined |
| * packets (ie TTBOMK all kernels, BSD, SunOS, Linux). However, |
| * SunOS, probably BSD too, clobber the user supplied IP ID and IP |
| * flags fields, hence user-space fragmentation will not work. |
| * Only Linux is known to leave IP header unmolested. |
| * Further, fragmentation really should be done the kernel, which already |
| * supports it, and which avoids nasty IP ID state problems. |
| * |
| * Fragmentation of OSPF packets can be required on networks with router |
| * with many many interfaces active in one area, or on networks with links |
| * with low MTUs. |
| */ |
| #ifdef GNU_LINUX |
| #define WANT_OSPF_WRITE_FRAGMENT |
| #endif |
| |
| /* |
| * IP_HDRINCL / struct ip byte order |
| * |
| * Linux: network byte order |
| * *BSD: network, except for length and offset. (cf Stevens) |
| * SunOS: nominally as per BSD. but bug: network order on LE. |
| * OpenBSD: network byte order, apart from older versions which are as per |
| * *BSD |
| */ |
| #if defined(__NetBSD__) || defined(__FreeBSD__) \ |
| || (defined(__OpenBSD__) && (OpenBSD < 200311)) \ |
| || (defined(__APPLE__)) \ |
| || (defined(SUNOS_5) && defined(WORDS_BIGENDIAN)) |
| #define HAVE_IP_HDRINCL_BSD_ORDER |
| #endif |
| |
| /* Define BYTE_ORDER, if not defined. Useful for compiler conditional |
| * code, rather than preprocessor conditional. |
| * Not all the world has this BSD define. |
| */ |
| #ifndef BYTE_ORDER |
| #define BIG_ENDIAN 4321 /* least-significant byte first (vax, pc) */ |
| #define LITTLE_ENDIAN 1234 /* most-significant byte first (IBM, net) */ |
| #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long (pdp) */ |
| |
| #if defined(WORDS_BIGENDIAN) |
| #define BYTE_ORDER BIG_ENDIAN |
| #else /* !WORDS_BIGENDIAN */ |
| #define BYTE_ORDER LITTLE_ENDIAN |
| #endif /* WORDS_BIGENDIAN */ |
| |
| #endif /* ndef BYTE_ORDER */ |
| |
| /* MAX / MIN are not commonly defined, but useful */ |
| #ifndef MAX |
| #define MAX(a, b) ((a) > (b) ? (a) : (b)) |
| #endif |
| #ifndef MIN |
| #define MIN(a, b) ((a) < (b) ? (a) : (b)) |
| #endif |
| |
| #define ZEBRA_NUM_OF(x) (sizeof (x) / sizeof (x[0])) |
| |
| /* For old definition. */ |
| #ifndef IN6_ARE_ADDR_EQUAL |
| #define IN6_ARE_ADDR_EQUAL IN6_IS_ADDR_EQUAL |
| #endif /* IN6_ARE_ADDR_EQUAL */ |
| |
| /* default zebra TCP port for zclient */ |
| #define ZEBRA_PORT 2600 |
| |
| /* Zebra message types. */ |
| #define ZEBRA_INTERFACE_ADD 1 |
| #define ZEBRA_INTERFACE_DELETE 2 |
| #define ZEBRA_INTERFACE_ADDRESS_ADD 3 |
| #define ZEBRA_INTERFACE_ADDRESS_DELETE 4 |
| #define ZEBRA_INTERFACE_UP 5 |
| #define ZEBRA_INTERFACE_DOWN 6 |
| #define ZEBRA_IPV4_ROUTE_ADD 7 |
| #define ZEBRA_IPV4_ROUTE_DELETE 8 |
| #define ZEBRA_IPV6_ROUTE_ADD 9 |
| #define ZEBRA_IPV6_ROUTE_DELETE 10 |
| #define ZEBRA_REDISTRIBUTE_ADD 11 |
| #define ZEBRA_REDISTRIBUTE_DELETE 12 |
| #define ZEBRA_REDISTRIBUTE_DEFAULT_ADD 13 |
| #define ZEBRA_REDISTRIBUTE_DEFAULT_DELETE 14 |
| #define ZEBRA_IPV4_NEXTHOP_LOOKUP 15 |
| #define ZEBRA_IPV6_NEXTHOP_LOOKUP 16 |
| #define ZEBRA_IPV4_IMPORT_LOOKUP 17 |
| #define ZEBRA_IPV6_IMPORT_LOOKUP 18 |
| #define ZEBRA_INTERFACE_RENAME 19 |
| #define ZEBRA_ROUTER_ID_ADD 20 |
| #define ZEBRA_ROUTER_ID_DELETE 21 |
| #define ZEBRA_ROUTER_ID_UPDATE 22 |
| #define ZEBRA_HELLO 23 |
| #define ZEBRA_MESSAGE_MAX 24 |
| |
| /* Marker value used in new Zserv, in the byte location corresponding |
| * the command value in the old zserv header. To allow old and new |
| * Zserv headers to be distinguished from each other. |
| */ |
| #define ZEBRA_HEADER_MARKER 255 |
| |
| /* Zebra route's types are defined in route_types.h */ |
| #include "route_types.h" |
| |
| /* Note: whenever a new route-type or zserv-command is added the |
| * corresponding {command,route}_types[] table in lib/log.c MUST be |
| * updated! */ |
| |
| /* Map a route type to a string. For example, ZEBRA_ROUTE_RIPNG -> "ripng". */ |
| extern const char *zebra_route_string(unsigned int route_type); |
| /* Map a route type to a char. For example, ZEBRA_ROUTE_RIPNG -> 'R'. */ |
| extern char zebra_route_char(unsigned int route_type); |
| /* Map a zserv command type to the same string, |
| * e.g. ZEBRA_INTERFACE_ADD -> "ZEBRA_INTERFACE_ADD" */ |
| /* Map a protocol name to its number. e.g. ZEBRA_ROUTE_BGP->9*/ |
| extern int proto_name2num(const char *s); |
| /* Map redistribute X argument to protocol number. |
| * unlike proto_name2num, this accepts shorthands and takes |
| * an AFI value to restrict input */ |
| extern int proto_redistnum(int afi, const char *s); |
| |
| extern const char *zserv_command_string (unsigned int command); |
| |
| /* Zebra's family types. */ |
| #define ZEBRA_FAMILY_IPV4 1 |
| #define ZEBRA_FAMILY_IPV6 2 |
| #define ZEBRA_FAMILY_MAX 3 |
| |
| /* Error codes of zebra. */ |
| #define ZEBRA_ERR_NOERROR 0 |
| #define ZEBRA_ERR_RTEXIST -1 |
| #define ZEBRA_ERR_RTUNREACH -2 |
| #define ZEBRA_ERR_EPERM -3 |
| #define ZEBRA_ERR_RTNOEXIST -4 |
| #define ZEBRA_ERR_KERNEL -5 |
| |
| /* Zebra message flags */ |
| #define ZEBRA_FLAG_INTERNAL 0x01 |
| #define ZEBRA_FLAG_SELFROUTE 0x02 |
| #define ZEBRA_FLAG_BLACKHOLE 0x04 |
| #define ZEBRA_FLAG_IBGP 0x08 |
| #define ZEBRA_FLAG_SELECTED 0x10 |
| #define ZEBRA_FLAG_CHANGED 0x20 |
| #define ZEBRA_FLAG_STATIC 0x40 |
| #define ZEBRA_FLAG_REJECT 0x80 |
| |
| /* Zebra nexthop flags. */ |
| #define ZEBRA_NEXTHOP_IFINDEX 1 |
| #define ZEBRA_NEXTHOP_IFNAME 2 |
| #define ZEBRA_NEXTHOP_IPV4 3 |
| #define ZEBRA_NEXTHOP_IPV4_IFINDEX 4 |
| #define ZEBRA_NEXTHOP_IPV4_IFNAME 5 |
| #define ZEBRA_NEXTHOP_IPV6 6 |
| #define ZEBRA_NEXTHOP_IPV6_IFINDEX 7 |
| #define ZEBRA_NEXTHOP_IPV6_IFNAME 8 |
| #define ZEBRA_NEXTHOP_BLACKHOLE 9 |
| |
| #ifndef INADDR_LOOPBACK |
| #define INADDR_LOOPBACK 0x7f000001 /* Internet address 127.0.0.1. */ |
| #endif |
| |
| /* Address family numbers from RFC1700. */ |
| #define AFI_IP 1 |
| #define AFI_IP6 2 |
| #define AFI_MAX 3 |
| |
| /* Subsequent Address Family Identifier. */ |
| #define SAFI_UNICAST 1 |
| #define SAFI_MULTICAST 2 |
| #define SAFI_RESERVED_3 3 |
| #define SAFI_MPLS_VPN 4 |
| #define SAFI_MAX 5 |
| |
| /* Filter direction. */ |
| #define FILTER_IN 0 |
| #define FILTER_OUT 1 |
| #define FILTER_MAX 2 |
| |
| /* Default Administrative Distance of each protocol. */ |
| #define ZEBRA_KERNEL_DISTANCE_DEFAULT 0 |
| #define ZEBRA_CONNECT_DISTANCE_DEFAULT 0 |
| #define ZEBRA_STATIC_DISTANCE_DEFAULT 1 |
| #define ZEBRA_RIP_DISTANCE_DEFAULT 120 |
| #define ZEBRA_RIPNG_DISTANCE_DEFAULT 120 |
| #define ZEBRA_OSPF_DISTANCE_DEFAULT 110 |
| #define ZEBRA_OSPF6_DISTANCE_DEFAULT 110 |
| #define ZEBRA_ISIS_DISTANCE_DEFAULT 115 |
| #define ZEBRA_IBGP_DISTANCE_DEFAULT 200 |
| #define ZEBRA_EBGP_DISTANCE_DEFAULT 20 |
| |
| /* Flag manipulation macros. */ |
| #define CHECK_FLAG(V,F) ((V) & (F)) |
| #define SET_FLAG(V,F) (V) |= (F) |
| #define UNSET_FLAG(V,F) (V) &= ~(F) |
| |
| /* AFI and SAFI type. */ |
| typedef u_int16_t afi_t; |
| typedef u_int8_t safi_t; |
| |
| /* Zebra types. Used in Zserv message header. */ |
| typedef u_int16_t zebra_size_t; |
| typedef u_int16_t zebra_command_t; |
| |
| /* FIFO -- first in first out structure and macros. */ |
| struct fifo |
| { |
| struct fifo *next; |
| struct fifo *prev; |
| }; |
| |
| #define FIFO_INIT(F) \ |
| do { \ |
| struct fifo *Xfifo = (struct fifo *)(F); \ |
| Xfifo->next = Xfifo->prev = Xfifo; \ |
| } while (0) |
| |
| #define FIFO_ADD(F,N) \ |
| do { \ |
| struct fifo *Xfifo = (struct fifo *)(F); \ |
| struct fifo *Xnode = (struct fifo *)(N); \ |
| Xnode->next = Xfifo; \ |
| Xnode->prev = Xfifo->prev; \ |
| Xfifo->prev = Xfifo->prev->next = Xnode; \ |
| } while (0) |
| |
| #define FIFO_DEL(N) \ |
| do { \ |
| struct fifo *Xnode = (struct fifo *)(N); \ |
| Xnode->prev->next = Xnode->next; \ |
| Xnode->next->prev = Xnode->prev; \ |
| } while (0) |
| |
| #define FIFO_HEAD(F) \ |
| ((((struct fifo *)(F))->next == (struct fifo *)(F)) \ |
| ? NULL : (F)->next) |
| |
| #define FIFO_EMPTY(F) \ |
| (((struct fifo *)(F))->next == (struct fifo *)(F)) |
| |
| #define FIFO_TOP(F) \ |
| (FIFO_EMPTY(F) ? NULL : ((struct fifo *)(F))->next) |
| |
| #endif /* _ZEBRA_H */ |