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Diffstat (limited to 'lib/zebra.h')
| -rw-r--r-- | lib/zebra.h | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/lib/zebra.h b/lib/zebra.h new file mode 100644 index 0000000..ecc87f5 --- /dev/null +++ b/lib/zebra.h @@ -0,0 +1,410 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* Zebra common header. + * Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Kunihiro Ishiguro + */ + +#ifndef _ZEBRA_H +#define _ZEBRA_H + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif /* HAVE_CONFIG_H */ + +#include "compiler.h" + +#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 */ +#include <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> +#else +#include <sys/sysctl.h> +#endif +#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> +#include <sys/time.h> +#include <time.h> +#include <sys/uio.h> +#include <sys/utsname.h> +#include <sys/resource.h> +#include <limits.h> +#include <inttypes.h> +#include <stdbool.h> +#ifdef HAVE_SYS_ENDIAN_H +#include <sys/endian.h> +#endif +#ifdef HAVE_ENDIAN_H +#include <endian.h> +#endif + +/* misc include group */ +#include <stdarg.h> + +#ifdef HAVE_LCAPS +#include <sys/capability.h> +#include <sys/prctl.h> +#endif /* HAVE_LCAPS */ + +/* 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 + +#ifndef HAVE_LIBCRYPT +#ifdef HAVE_LIBCRYPTO +#include <openssl/des.h> +# define crypt DES_crypt +#endif +#endif + +#ifdef CRYPTO_OPENSSL +#include <openssl/evp.h> +#include <openssl/hmac.h> +#endif + +#include "openbsd-tree.h" + +#include <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 */ + +#include <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 */ + +#include <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 */ + +#include <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 INT16_MAX +#define INT16_MAX (32767) +#endif +#ifndef INT32_MAX +#define INT32_MAX (2147483647) +#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__) +#define __attribute__(x) +#endif /* !__GNUC__ */ + +#include <assert.h> + +/* + * Add explicit static cast only when using a C++ compiler. + */ +#ifdef __cplusplus +#define static_cast(l, r) static_cast<decltype(l)>((r)) +#else +#define static_cast(l, r) (r) +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +#ifndef HAVE_STRLCAT +size_t strlcat(char *__restrict dest, + const char *__restrict src, size_t destsize); +#endif +#ifndef HAVE_STRLCPY +size_t strlcpy(char *__restrict dest, + const char *__restrict src, size_t destsize); +#endif + +#ifndef HAVE_EXPLICIT_BZERO +void explicit_bzero(void *buf, size_t len); +#endif + +#if !defined(HAVE_STRUCT_MMSGHDR_MSG_HDR) || !defined(HAVE_SENDMMSG) +/* avoid conflicts in case we have partial support */ +#define mmsghdr frr_mmsghdr +#define sendmmsg frr_sendmmsg + +struct mmsghdr { + struct msghdr msg_hdr; + unsigned int msg_len; +}; + +/* just go 1 at a time here, the loop this is used in will handle the rest */ +static inline int sendmmsg(int fd, struct mmsghdr *mmh, unsigned int len, + int flags) +{ + int rv = sendmsg(fd, &mmh->msg_hdr, 0); + + return rv > 0 ? 1 : rv; +} +#endif + +/* + * 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 + +/* + * 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__)) +#define HAVE_IP_HDRINCL_BSD_ORDER +#endif + +/* autoconf macros for this are deprecated, just find endian.h */ +#ifndef BYTE_ORDER +#error please locate an endian.h file appropriate to your platform +#endif + +/* 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 + +/* + * The compiler.h header is used for anyone using the CPP_NOTICE + * since this is universally needed, let's add it to zebra.h + */ +#include "compiler.h" + +/* Zebra route's types are defined in route_types.h */ +#include "lib/route_types.h" + +#define strmatch(a,b) (!strcmp((a), (b))) + +#if BYTE_ORDER == LITTLE_ENDIAN +#define htonll(x) (((uint64_t)htonl((x)&0xFFFFFFFF) << 32) | htonl((x) >> 32)) +#define ntohll(x) (((uint64_t)ntohl((x)&0xFFFFFFFF) << 32) | ntohl((x) >> 32)) +#else +#define htonll(x) (x) +#define ntohll(x) (x) +#endif + +#ifndef INADDR_LOOPBACK +#define INADDR_LOOPBACK 0x7f000001 /* Internet address 127.0.0.1. */ +#endif + +/* Address family numbers from RFC1700. */ +typedef enum { + AFI_UNSPEC = 0, + AFI_IP = 1, + AFI_IP6 = 2, + AFI_L2VPN = 3, + AFI_MAX = 4 +} afi_t; + +#define IS_VALID_AFI(a) ((a) > AFI_UNSPEC && (a) < AFI_MAX) + +/* Subsequent Address Family Identifier. */ +typedef enum { + SAFI_UNSPEC = 0, + SAFI_UNICAST = 1, + SAFI_MULTICAST = 2, + SAFI_MPLS_VPN = 3, + SAFI_ENCAP = 4, + SAFI_EVPN = 5, + SAFI_LABELED_UNICAST = 6, + SAFI_FLOWSPEC = 7, + SAFI_MAX = 8 +} safi_t; + +#define FOREACH_AFI_SAFI(afi, safi) \ + for (afi = AFI_IP; afi < AFI_MAX; afi++) \ + for (safi = SAFI_UNICAST; safi < SAFI_MAX; safi++) + +#define FOREACH_AFI_SAFI_NSF(afi, safi) \ + for (afi = AFI_IP; afi < AFI_MAX; afi++) \ + for (safi = SAFI_UNICAST; safi <= SAFI_MPLS_VPN; safi++) + +/* 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 +#define ZEBRA_EIGRP_DISTANCE_DEFAULT 90 +#define ZEBRA_NHRP_DISTANCE_DEFAULT 10 +#define ZEBRA_LDP_DISTANCE_DEFAULT 150 +#define ZEBRA_BABEL_DISTANCE_DEFAULT 100 +#define ZEBRA_SHARP_DISTANCE_DEFAULT 150 +#define ZEBRA_PBR_DISTANCE_DEFAULT 200 +#define ZEBRA_OPENFABRIC_DISTANCE_DEFAULT 115 +#define ZEBRA_MAX_DISTANCE_DEFAULT 255 + +/* 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 +#define COND_FLAG(V, F, C) ((C) ? (SET_FLAG(V, F)) : (UNSET_FLAG(V, F))) + +/* Atomic flag manipulation macros. */ +#define CHECK_FLAG_ATOMIC(PV, F) \ + ((atomic_load_explicit(PV, memory_order_seq_cst)) & (F)) +#define SET_FLAG_ATOMIC(PV, F) \ + ((atomic_fetch_or_explicit(PV, (F), memory_order_seq_cst))) +#define UNSET_FLAG_ATOMIC(PV, F) \ + ((atomic_fetch_and_explicit(PV, ~(F), memory_order_seq_cst))) +#define RESET_FLAG_ATOMIC(PV) \ + ((atomic_store_explicit(PV, 0, memory_order_seq_cst))) + +/* VRF ID type. */ +typedef uint32_t vrf_id_t; + +typedef uint32_t route_tag_t; +#define ROUTE_TAG_MAX UINT32_MAX +#define ROUTE_TAG_PRI PRIu32 + +#ifdef __cplusplus +} +#endif + +#endif /* _ZEBRA_H */ |