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mirror_frr/lib/zebra.h
Donald Sharp e978e1de98 lib, bgpd: Fixup afi_t to be an enum and cleanup zebra.h 
This code change does two things:

1) Removes ZEBRA_AFI_XXX #defines since they were redundant information
2) Switches afi_t to an enumerated type so that the compiler
can do a bit more compile time checking.

Signed-off-by: Donald Sharp <sharpd@cumulusnetworks.com>
(cherry picked from commit f3cfc46450cccc5ac035a5a97c5a1a5484205705)

Conflicts:
	bgpd/bgp_open.c
	bgpd/bgp_open.h
	bgpd/bgp_routemap.c
2016-06-06 14:20:24 -07:00

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/* 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
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 <stddef.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 */
#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 */
#ifdef HAVE_STDBOOL_H
#include <stdbool.h>
#endif
/* 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 __APPLE__
#define __APPLE_USE_RFC_3542
#endif
#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>
#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 */
/* 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__) && (__FreeBSD_version < 1100030)) \
|| (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) \
({ typeof (a) _a = (a); \
typeof (b) _b = (b); \
_a > _b ? _a : _b; })
#endif
#ifndef MIN
#define MIN(a, b) \
({ typeof (a) _a = (a); \
typeof (b) _b = (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_NEXTHOP_REGISTER 24
#define ZEBRA_NEXTHOP_UNREGISTER 25
#define ZEBRA_NEXTHOP_UPDATE 26
#define ZEBRA_INTERFACE_NBR_ADDRESS_ADD 27
#define ZEBRA_INTERFACE_NBR_ADDRESS_DELETE 28
#define ZEBRA_INTERFACE_BFD_DEST_UPDATE 29
#define ZEBRA_IMPORT_ROUTE_REGISTER 30
#define ZEBRA_IMPORT_ROUTE_UNREGISTER 31
#define ZEBRA_IMPORT_CHECK_UPDATE 32
#define ZEBRA_IPV4_ROUTE_IPV6_NEXTHOP_ADD 33
#define ZEBRA_BFD_DEST_REGISTER 34
#define ZEBRA_BFD_DEST_DEREGISTER 35
#define ZEBRA_BFD_DEST_UPDATE 36
#define ZEBRA_BFD_DEST_REPLAY 37
#define ZEBRA_REDISTRIBUTE_IPV4_ADD 38
#define ZEBRA_REDISTRIBUTE_IPV4_DEL 39
#define ZEBRA_REDISTRIBUTE_IPV6_ADD 40
#define ZEBRA_REDISTRIBUTE_IPV6_DEL 41
#define ZEBRA_VRF_UNREGISTER 42
#define ZEBRA_VRF_ADD 43
#define ZEBRA_VRF_DELETE 44
#define ZEBRA_INTERFACE_VRF_UPDATE 45
#define ZEBRA_BFD_CLIENT_REGISTER 46
#define ZEBRA_INTERFACE_ENABLE_RADV 47
#define ZEBRA_INTERFACE_DISABLE_RADV 48
#define ZEBRA_IPV4_NEXTHOP_LOOKUP_MRIB 49
#define ZEBRA_MESSAGE_MAX 50
/* 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);
/* 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
#define ZEBRA_FLAG_SCOPE_LINK 0x100
/* Zebra nexthop flags. */
#define ZEBRA_NEXTHOP_IFINDEX 1
#define ZEBRA_NEXTHOP_IPV4 2
#define ZEBRA_NEXTHOP_IPV4_IFINDEX 3
#define ZEBRA_NEXTHOP_IPV6 4
#define ZEBRA_NEXTHOP_IPV6_IFINDEX 5
#define ZEBRA_NEXTHOP_BLACKHOLE 6
#define ZEBRA_NEXTHOP_IPV4_ONLINK 7
#ifndef INADDR_LOOPBACK
#define INADDR_LOOPBACK 0x7f000001 /* Internet address 127.0.0.1. */
#endif
/* Address family numbers from RFC1700. */
typedef enum {
AFI_IP = 1,
AFI_IP6 = 2,
#define AFI_MAX 3
} afi_t;
/* Subsequent Address Family Identifier. */
#define SAFI_UNICAST 1
#define SAFI_MULTICAST 2
#define SAFI_RESERVED_3 3
#define SAFI_MPLS_VPN 4
#define SAFI_ENCAP 7 /* per IANA */
#define SAFI_MAX 8
/* 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
#define ZEBRA_TABLE_DISTANCE_DEFAULT 15
/* Flag manipulation macros. */
#define CHECK_FLAG(V,F) ((V) & (F))
#define SET_FLAG(V,F) (V) |= (F)
#define UNSET_FLAG(V,F) (V) &= ~(F)
#define RESET_FLAG(V) (V) = 0
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;
/* VRF ID type. */
typedef u_int16_t vrf_id_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 */
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