diff options
| -rw-r--r-- | Makefile | 23 | ||||
| -rw-r--r-- | Rules | 12 | ||||
| -rw-r--r-- | TODO | 143 | ||||
| -rw-r--r-- | lib/Makefile | 3 | ||||
| -rw-r--r-- | lib/birdlib.h | 17 | ||||
| -rw-r--r-- | lib/lists.c | 76 | ||||
| -rw-r--r-- | lib/lists.h | 42 | ||||
| -rw-r--r-- | lib/resource.h | 70 | ||||
| -rw-r--r-- | lib/socket.h | 16 | ||||
| -rw-r--r-- | lib/timer.h | 26 | ||||
| -rw-r--r-- | lib/unaligned.h | 12 | ||||
| -rw-r--r-- | nest/Makefile | 3 | ||||
| -rw-r--r-- | nest/bird.h | 24 | ||||
| -rw-r--r-- | nest/confile.h | 12 | ||||
| -rw-r--r-- | nest/iface.h | 12 | ||||
| -rw-r--r-- | nest/ipv4.h | 20 | ||||
| -rw-r--r-- | nest/ipv6.h | 21 | ||||
| -rw-r--r-- | nest/main.c | 23 | ||||
| -rw-r--r-- | nest/protocol.h | 66 | ||||
| -rw-r--r-- | nest/route.h | 190 | ||||
| -rw-r--r-- | sysdep/cf/linux-20.h | 11 | ||||
| -rw-r--r-- | sysdep/cf/linux-21.h | 11 | ||||
| -rw-r--r-- | sysdep/cf/linux-v6.h | 13 | ||||
| -rw-r--r-- | sysdep/config.h | 50 | ||||
| -rw-r--r-- | sysdep/linux/Makefile | 1 |
25 files changed, 897 insertions, 0 deletions
diff --git a/Makefile b/Makefile new file mode 100644 index 00000000..0c62fe54 --- /dev/null +++ b/Makefile @@ -0,0 +1,23 @@ +# Makefile for the BIRD Internet Routing Daemon +# (c) 1998 Martin Mares <mj@ucw.cz> + +TOPDIR=$(shell pwd) +CFLAGS=-O2 -Wall -W -Wstrict-prototypes -Wno-unused -Wno-parentheses -I$(TOPDIR) + +PROTOCOLS= +DIRS=sysdep/linux nest $(protocols) lib +ARCHS=$(join $(addsuffix /,$(DIRS)),$(subst /,_,$(addsuffix .a,$(DIRS)))) + +export + +all: all-dirs bird + +all-dirs: + set -e ; for a in $(DIRS) ; do $(MAKE) -C $$a ; done + +bird: $(ARCHS) + $(CC) $(LDFLAGS) -o $@ $^ + +clean: + rm -f `find . -name "*~" -or -name "*.[oa]" -or -name "\#*\#" -or -name TAGS -or -name core` + rm -f bird @@ -0,0 +1,12 @@ +# Makefile for the BIRD Internet Routing Daemon +# (c) 1998 Martin Mares <mj@ucw.cz> + +THISDIR=$(shell pwd) +RELDIR=$(subst $(TOPDIR)/,,$(THISDIR)) +ANAME=$(subst /,_,$(RELDIR)).a + +all: $(ANAME) + +$(ANAME): $(OBJS) + rm -f $(ANAME) + ar rcs $(ANAME) $(OBJS) @@ -0,0 +1,143 @@ +Core +~~~~ +- route validation +- fake multipath? +- config file: symbolic constants? +- counters (according to SNMP MIB?) +- generation of subnet mask ICMP's for v6? +- debugging dumps and protocol tracing! +- unaligned accesses? + + +RIP +~~~ +- RIP: export-only and import-only mode? +- drop RIPv1 (Historic protocol)? + +OSPF +~~~~ + +Almquist & Kastenholz [Page 111] +RFC 1716 Towards Requirements for IP Routers November 1994 + + +7.2.2.2 Specific Issues + + Virtual Links + + There is a minor error in the specification that can cause + routing loops when all of the following conditions are + simultaneously true: + + (1) A virtual link is configured through a transit area, + + (2) Two separate paths exist, each having the same + endpoints, but one utilizing only non-virtual + backbone links, and the other using links in the + transit area, and + + (3) The latter path is part of the (underlying physical + representation of the) configured virtual link, + routing loops may occur. + + To prevent this, an implementation of OSPF SHOULD invoke + the calculation in Section 16.3 of [ROUTE:1] whenever any + part of the path to the destination is a virtual link (the + specification only says this is necessary when the first + hop is a virtual link). + +BGP +~~~ +- BGP: + - in, local, out RIB + - maxsize=4096 + - BGP identifier aka router id + - removal of loops + - aggregation, ATOMIC_AGGREGATE + - communities + - confederations + - attributes must be sorted! + - re-export of NEXT_HOP attribute + - BGP session over currently down interface + - route flap dampening? + - LOCAL_PREF attribute + - error notification received -> log error + - set TTL to 1 (configurable?) + - consulting IGP for next-hop information? (what if it changes?) + - inter-advertisement delay???! + - normalize (sort) incoming AS-SET's + - maximum length of AS paths + + - expected neighbor AS + - hold time + - idle timer after error: initial value, exponential growth, maximum value + +- address testing macros (ALL_ZEROS) +- all internal tables are in network order (?) +- logging of errors and debug dumps +- filter: logging of dropped routes (?) +- limitation of memory consumption: per-process and total +- alloca +- precedence of all packets (incl. TCP) +- adding of route: clear all bits not covered by masklen +- switch: generate default route only if at least one BGP connection exists + +- route update: new, change, remove +- route recalculation timing + +- CONFIG_TOS +- CONFIG_MULTIPATH + +- reconfiguration without restart of all protocols? +- change of interface address: ??? (down and up?) +- "generate default route" switch for all IGP's + +- RIPv2: + - Route Tag + - limit routing table xfer (frequency, only to neighbors) + - multicast on/off + - remember routes for all neighbors? + +- BGP: + - import of IGP routes (use external route tags from OSPF) + +- Interface: + - RIP metric + - multicast capability flag + - MTU + - OSPF metrics (per-TOS) + +- running protocol on an interface: + - interface is not required to exist + - can specify a wildcard pattern or an interface list + +- preferences: + - directly connected + - static + - OSPF internal, OSPF ext type 1 (comparable metrics), OSPF inter-area + - RIP + - BGP + - OSPF ext type 2 + - sink + +- lib: + - MD5 + +- OSPF: + - Dijkstra: use Fibonacci heaps? + - point-to-point interface with address: advertise as stub network + - static routes: stub networks? + - modes: PtP, PtP-unnumbered, Broadcast, NBMA, point-to-multipoint + - importing of device routes for networks where we don't run OSPF + - tie breaking for equal type 2 ext metrics by using internal (type 1) metric + - SPF tree recalc timing (per-area timers?) + - aggregation: specify network list for each area + - stub area: either no external routes or only default route + - automatic generation of external route tags (RFC1403) -- what about + using the same rule for RIPv2? [shared code?] + +- timers - one-shot and periodic, resolution 1 sec, randomized +- re-configuration: restart of routing protocols (shutdown mode) +- route: originating AS + +- Check incoming packets and log errors!! diff --git a/lib/Makefile b/lib/Makefile new file mode 100644 index 00000000..214f76af --- /dev/null +++ b/lib/Makefile @@ -0,0 +1,3 @@ +OBJS=lists.o + +include $(TOPDIR)/Rules diff --git a/lib/birdlib.h b/lib/birdlib.h new file mode 100644 index 00000000..fb4814f9 --- /dev/null +++ b/lib/birdlib.h @@ -0,0 +1,17 @@ +/* + * BIRD Library + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_BIRDLIB_H_ +#define _BIRD_BIRDLIB_H_ + +/* Ugly structure offset handling macros */ + +#define OFFSETOF(s, i) ((unsigned int)&((s *)0)->i) +#define SKIP_BACK(s, i, p) ((s *)((char *)p - OFFSETOF(s, i))) + +#endif diff --git a/lib/lists.c b/lib/lists.c new file mode 100644 index 00000000..321a5f05 --- /dev/null +++ b/lib/lists.c @@ -0,0 +1,76 @@ +/* + * BIRD Library -- Linked Lists + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#define _BIRD_LISTS_C_ + +#include <nest/bird.h> +#include <lib/lists.h> + +LIST_INLINE void +add_tail(list *l, node *n) +{ + node *z = l->tail; + + n->next = (node *) &l->tail; + n->prev = z; + z->next = n; + l->tail = n; +} + +LIST_INLINE void +add_head(list *l, node *n) +{ + node *z = l->head; + + n->next = z; + n->prev = (node *) &l->head; + z->prev = n; + l->head = n; +} + +LIST_INLINE void +insert_node(node *n, node *after) +{ + node *z = after->next; + + n->next = z; + n->prev = after; + after->next = n; + z->prev = n; +} + +LIST_INLINE void +rem_node(node *n) +{ + node *z = n->prev; + node *x = n->next; + + z->next = x; + x->prev = z; +} + +LIST_INLINE void +init_list(list *l) +{ + l->head = (node *) &l->null; + l->null = NULL; + l->tail = (node *) &l->head; +} + +LIST_INLINE void +add_tail_list(list *to, list *l) +{ + node *p = to->tail; + node *q = l->head; + + p->next = q; + q->prev = p; + q = l->tail; + q->next = (node *) &to->null; + to->tail = q; +} diff --git a/lib/lists.h b/lib/lists.h new file mode 100644 index 00000000..acc054d8 --- /dev/null +++ b/lib/lists.h @@ -0,0 +1,42 @@ +/* + * BIRD Library -- Linked Lists + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_LISTS_H_ +#define _BIRD_LISTS_H_ + +typedef struct node { + struct node *next, *prev; +} node; + +typedef struct list { /* In fact two overlayed nodes */ + struct node *head, *null, *tail; +} list; + +#define NODE (node *) +#define HEAD(list) ((void *)((list).head)) +#define TAIL(list) ((void *)((list).tail)) +#define WALK_LIST(n,list) for((n)=HEAD(list);(NODE (n))->next; \ + n=(void *)((NODE (n))->next)) +#define EMPTY_LIST(list) (!(list).head->next) + +void add_tail(list *, node *); +void add_head(list *, node *); +void rem_node(node *); +void add_tail_list(list *, list *); +void init_list(list *); +void insert_node(node *, node *); + +#ifndef _BIRD_LISTS_C_ +#define LIST_INLINE extern inline +#include <lib/lists.c> +#undef LIST_INLINE +#else +#define LIST_INLINE +#endif + +#endif diff --git a/lib/resource.h b/lib/resource.h new file mode 100644 index 00000000..a1d229ec --- /dev/null +++ b/lib/resource.h @@ -0,0 +1,70 @@ +/* + * BIRD Resource Manager + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_RESOURCE_H_ +#define _BIRD_RESOURCE_H_ + +#include <lib/lists.h> + +/* Resource */ + +typedef struct resource { + node n; /* Inside resource pool */ + struct resclass *class; /* Resource class */ +} resource; + +/* Resource class */ + +struct resclass { + char *name; /* Resource class name */ + unsigned size; /* Standard size of single resource */ + void (*free)(resource *); /* Freeing function */ + void (*dump)(resource *); /* Dump to debug output */ +}; + +/* Generic resource manipulation */ + +typedef struct pool pool; + +pool *rp_new(pool *); /* Create new pool */ +void rp_init(pool *); /* Initialize static pool */ +void rp_empty(pool *); /* Free everything in the pool */ +void rfree(void *); /* Free single resource */ +void rdump(void *); /* Dump to debug output */ + +void ralloc(pool *, struct resclass *); + +/* Normal memory blocks */ + +void *mb_alloc(pool *, unsigned size); +void *mb_free(void *); + +/* Memory pools with linear allocation */ + +typedef struct mempool mempool; + +mempool *mp_new(pool *, unsigned blk); +void mp_trim(pool *); /* Free unused memory */ +void *mp_alloc(mempool *, unsigned size); /* Aligned */ +void *mp_allocu(mempool *, unsigned size); /* Unaligned */ +void *mp_allocz(mempool *, unsigned size); /* With clear */ + +/* Slabs */ + +typedef struct slab slab; + +slab *sl_new(pool *, unsigned size); +void *sl_alloc(slab *); +void sl_free(slab *, void *); + +/* Low-level memory allocation functions, please don't use */ + +void *xmalloc(unsigned); +#define xfree(x) free(x) + +#endif diff --git a/lib/socket.h b/lib/socket.h new file mode 100644 index 00000000..4f68a161 --- /dev/null +++ b/lib/socket.h @@ -0,0 +1,16 @@ +/* + * BIRD Socket Interface + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_SOCKET_H_ +#define _BIRD_SOCKET_H_ + +#include <lib/resource.h> + +typedef struct birdsock socket; + +#endif diff --git a/lib/timer.h b/lib/timer.h new file mode 100644 index 00000000..29f20c4b --- /dev/null +++ b/lib/timer.h @@ -0,0 +1,26 @@ +/* + * BIRD Timers + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_TIMER_H_ +#define _BIRD_TIMER_H_ + +#include <lib/resource.h> + +typedef struct timer { + resource r; + void (*hook)(struct timer *); + void *data; + /* internal fields should be here */ +} timer; + +timer *tm_new(pool *, void (*hook)(timer *), void *data); +void tm_start(timer *, unsigned after); +void tm_stop(timer *); +void tm_trigger(timer *); + +#endif diff --git a/lib/unaligned.h b/lib/unaligned.h new file mode 100644 index 00000000..29fcee99 --- /dev/null +++ b/lib/unaligned.h @@ -0,0 +1,12 @@ +/* + * Unaligned Data Accesses + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_UNALIGNED_H_ +#define _BIRD_UNALIGNED_H_ + +#endif diff --git a/nest/Makefile b/nest/Makefile new file mode 100644 index 00000000..d6c0e6ef --- /dev/null +++ b/nest/Makefile @@ -0,0 +1,3 @@ +OBJS=main.o + +include $(TOPDIR)/Rules diff --git a/nest/bird.h b/nest/bird.h new file mode 100644 index 00000000..e8c33189 --- /dev/null +++ b/nest/bird.h @@ -0,0 +1,24 @@ +/* + * BIRD Internet Routing Daemon -- Basic Declarations + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_BIRD_H_ +#define _BIRD_BIRD_H_ + +#include <sysdep/config.h> +#include <lib/birdlib.h> + +#ifndef IPV6 +#include <nest/ipv4.h> +#else +#include <nest/ipv6.h> +#endif + +extern u32 router_id; /* Our Router ID */ +extern u16 this_as; /* Our Autonomous System Number */ + +#endif diff --git a/nest/confile.h b/nest/confile.h new file mode 100644 index 00000000..1089e76a --- /dev/null +++ b/nest/confile.h @@ -0,0 +1,12 @@ +/* + * BIRD Internet Routing Daemon -- Configuration File + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_CONFILE_H_ +#define _BIRD_CONFILE_H_ + +#endif diff --git a/nest/iface.h b/nest/iface.h new file mode 100644 index 00000000..2d0d7573 --- /dev/null +++ b/nest/iface.h @@ -0,0 +1,12 @@ +/* + * BIRD Internet Routing Daemon -- Network Interfaces + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_IFACE_H_ +#define _BIRD_IFACE_H_ + +#endif diff --git a/nest/ipv4.h b/nest/ipv4.h new file mode 100644 index 00000000..75242298 --- /dev/null +++ b/nest/ipv4.h @@ -0,0 +1,20 @@ +/* + * BIRD -- IP Addresses et Cetera for IPv4 + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_IPV4_H_ +#define _BIRD_IPV4_H_ + +#include <netinet/in.h> + +typedef struct ipv4_addr { + u32 addr; +} ip_addr; + +#define ipa_equal(x,y) ((x).addr == (y).addr) + +#endif diff --git a/nest/ipv6.h b/nest/ipv6.h new file mode 100644 index 00000000..5d5e3544 --- /dev/null +++ b/nest/ipv6.h @@ -0,0 +1,21 @@ +/* + * BIRD -- IP Addresses et Cetera for IPv6 + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_IPV4_H_ +#define _BIRD_IPV4_H_ + +#include <netinet/in.h> +#include <string.h> + +typedef struct ipv4_addr { + u32 addr[4]; +} ip_addr; + +#define ipa_equal(x,y) (!memcmp(&(x),&(y),sizeof(ip_addr))) + +#endif diff --git a/nest/main.c b/nest/main.c new file mode 100644 index 00000000..8f60f272 --- /dev/null +++ b/nest/main.c @@ -0,0 +1,23 @@ +/* + * BIRD Internet Routing Daemon + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#include <nest/bird.h> +#include <lib/lists.h> + +#include <nest/resource.h> + +int +main(void) +{ + ip_addr x,y; + + x=y; + if (ipa_equal(x,y)) return 1; + + return 0; +} diff --git a/nest/protocol.h b/nest/protocol.h new file mode 100644 index 00000000..adca1149 --- /dev/null +++ b/nest/protocol.h @@ -0,0 +1,66 @@ +/* + * BIRD Internet Routing Daemon -- Protocols + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_PROTOCOL_H_ +#define _BIRD_PROTOCOL_H_ + +#include <lib/resource.h> + +/* + * Routing Protocol + */ + +struct protocol { + char *name; + unsigned type; /* ??? List values ??? */ + unsigned debug; /* Default debugging flags */ + + void (*init)(struct protocol *); /* Boot time */ + void (*preconfig)(struct protocol *); /* Just before configuring */ + void (*postconfig)(struct protocol *); /* After configuring */ +}; + +void protos_init(void); +void protos_preconfig(void); +void protos_postconfig(void); + +/* + * Known protocols + */ + +extern struct protocol proto_static; + +/* + * Routing Protocol Instance + */ + +struct proto { + struct proto *next; + struct protocol *proto; /* Protocol */ + char *name; /* Name of this instance */ + unsigned debug; /* Debugging flags */ + pool *pool; /* Local objects */ + unsigned preference; /* Default route preference */ + + void (*if_notify)(struct proto *, struct iface *old, struct iface *new); + void (*rt_notify)(struct proto *, struct rte *old, struct rte *new); + void (*debug)(struct proto *); /* Debugging dump */ + void (*start)(struct proto *); /* Start the instance */ + void (*shutdown)(struct proto *, int time); /* Stop the instance */ + + /* Reconfigure function? */ + /* Interface patterns */ + /* Input/output filters */ + /* Connection to routing tables? */ + + /* Hic sunt protocol-specific data */ +}; + +void *proto_new(struct protocol *, unsigned size); + +#endif diff --git a/nest/route.h b/nest/route.h new file mode 100644 index 00000000..e968e12a --- /dev/null +++ b/nest/route.h @@ -0,0 +1,190 @@ +/* + * BIRD Internet Routing Daemon -- Routing Table + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#ifndef _BIRD_ROUTE_H_ +#define _BIRD_ROUTE_H_ + +#include <lib/resource.h> + +/* + * Generic data structure for storing network prefixes. Also used + * for the master routing table. Currently implemented as a radix + * trie. + * + * Available operations: + * - insertion of new entry + * - deletion of entry + * - searching of entry by network prefix + * - searching of entry by IP address (longest match) + */ + +struct fib_node { + ip_addr prefix; /* In host order */ + byte pxlen; + byte flags; /* ??? define them ??? */ + byte pad0, pad1; /* ??? use ??? */ + struct fib_node *left, *right, *up; /* Radix Trie links */ +}; + +struct fib { + slab fib_slab; /* Slab holding all fib nodes */ + struct fib_node root; + void (*init)(struct fib_node *); /* Constructor */ +}; + +void fib_init(struct fib *, pool *, unsigned node_size, void (*init)(struct fib_node *)); +void *fib_find(struct fib *, ip_addr *, int); /* Find or return NULL if doesn't exist */ +void *fib_find_ip(struct fib *, ip_addr *); /* Longest match (always exists) */ +void *fib_get(struct fib *, ip_addr *, int); /* Find or create new if nonexistent */ +void fib_delete(struct fib *); + +/* + * Master Routing Table. Generally speaking, it's a FIB with each entry + * pointing to a list of route entries representing routes to given network. + * Each of the RTE's contains variable data (the preference and protocol-dependent + * metrics) and a pointer to route attribute block common for many routes). + */ + +typedef struct network { + struct fib_node n; + struct rte *routes; /* Available routes for this network */ + struct network *next; /* Next in Recalc Chain */ +} net; + +typedef struct rte { + struct rte *next; + struct rtattr *attrs; + byte flags; /* Flags (REF_...) */ + byte rfu; + word pref; /* Route preference */ + union { /* Protocol-dependent data (metrics etc.) */ +#ifdef CONFIG_STATIC + struct { + } stat; +#endif +#ifdef CONFIG_RIP + struct { + byte metric; /* RIP metric */ + } rip; +#endif +#ifdef CONFIG_OSPF + struct { + u32 metric1, metric2; /* OSPF Type 1 and Type 2 metrics */ + } ospf; +#endif +#ifdef CONFIG_BGP + struct { + } bgp; +#endif + } u; +} rte; + +#define REF_CHOSEN 1 /* Currently chosen route */ + +typedef struct rte rte; + +/* + * Route Attributes + * + * Beware: All standard BGP attributes must be represented here instead + * of making them local to the route. This is needed to ensure proper + * construction of BGP route attribute lists. + */ + +struct rtattr { + struct rtattr *next, *prev; /* Hash chain */ + struct rtattr *garbage; /* Garbage collector chain */ + struct proto *proto; /* Protocol instance */ + unsigned uc; /* Use count */ + byte source; /* Route source (RTS_...) */ + byte scope; /* Route scope (SCOPE_...) */ + byte cast; /* Casting type (RTC_...) */ + byte dest; /* Route destination type (RTD_...) */ + byte tos; /* TOS of this route */ + byte flags; /* Route flags (RTF_...) */ + word source_as; /* Source AS of this route (0=local) */ + ip_addr gw; /* Next hop */ + struct iface *iface; /* Outgoing interface */ + struct ea_list *attrs; /* Extended Attribute chain */ +} rta; + +#define RTS_STATIC 1 /* Normal static route */ +#define RTS_INHERIT 2 /* Route inherited from kernel */ +#define RTS_DEVICE 3 /* Device route */ +#define RTS_STATIC_DEVICE 4 /* Static device route */ +#define RTS_REDIRECT 5 /* Learned via redirect */ +#define RTS_RIP 6 /* RIP route */ +#define RTS_RIP_EXT 7 /* RIP external route */ +#define RTS_OSPF 8 /* OSPF route */ +#define RTS_OSPF_EXT 9 /* OSPF external route */ +#define RTS_OSPF_IA 10 /* OSPF inter-area route */ +#define RTS_OSPF_BOUNDARY 11 /* OSPF route to boundary router */ +#define RTS_BGP 12 /* BGP route */ + +#define SCOPE_HOST 0 /* Address scope */ +#define SCOPE_LINK 0x10 +#define SCOPE_SITE 0x80 +#define SCOPE_UNIVERSE 0xff + +#define RTC_UNICAST 0 +#define RTC_BROADCAST 1 +#define RTC_MULTICAST 2 +#define RTC_ANYCAST 3 /* IPv6 Anycast */ + +#define RTD_ROUTER 0 /* Next hop is neighbor router */ +#define RTD_DEVICE 1 /* Points to device */ +#define RTD_BLACKHOLE 2 /* Silently drop packets */ +#define RTD_UNREACHABLE 3 /* Reject as unreachable */ +#define RTD_PROHIBIT 4 /* Administratively prohibited */ + +/* + * Extended Route Attributes + */ + +typedef struct eattr { + byte protocol; /* Protocol ID (EAP_...) */ + byte flags; /* Attribute flags (EAF_...) */ + byte id; /* Protocol-dependent ID */ + union { + u32 data; + struct adata *ptr; /* Attribute data elsewhere */ + } u; +} eattr; + +#define EAP_GENERIC 0 /* Generic attributes */ +#define EAP_BGP 1 /* BGP attributes */ + +#define EAF_OPTIONAL 0x80 /* Refer to BGP specs for full meaning */ +#define EAF_TRANSITIVE 0x40 +#define EAF_PARTIAL 0x20 +#define EAF_EXTENDED_LENGTH 0x10 /* Not used by us, internal to BGP */ +#define EAF_LONGWORD 0x01 /* Embedded value [Not a BGP flag!] */ + +struct adata { + unsigned int length; + byte data[0]; +}; + +typedef struct ea_list { + struct ea_list *next; /* In case we have an override list */ + byte sorted; /* `Really sorted' flag */ + byte rfu; + word nattrs; /* Number of attributes */ + eattr attrs[0]; /* Attribute definitions themselves */ +} ea_list; + +eattr *ea_find(ea_list *, unsigned protocol, unsigned id); + +#define EA_LIST_NEW(p, alloc, n) do { \ + unsigned cnt = n; \ + p = alloc(sizeof(ea_list) + cnt*sizeof(eattr)); \ + memset(p, sizeof(ea_list)); \ + p->nattrs = cnt; \ +} while(0) + +#endif diff --git a/sysdep/cf/linux-20.h b/sysdep/cf/linux-20.h new file mode 100644 index 00000000..6100add3 --- /dev/null +++ b/sysdep/cf/linux-20.h @@ -0,0 +1,11 @@ +/* + * Configuration for Linux 2.0 based systems + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#undef CONFIG_TOS +#undef CONFIG_MULTIPATH +#undef CONFIG_NETLINK diff --git a/sysdep/cf/linux-21.h b/sysdep/cf/linux-21.h new file mode 100644 index 00000000..a2afcbbd --- /dev/null +++ b/sysdep/cf/linux-21.h @@ -0,0 +1,11 @@ +/* + * Configuration for Linux 2.1 based systems + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#define CONFIG_TOS +#define CONFIG_MULTIPATH +#define CONFIG_NETLINK diff --git a/sysdep/cf/linux-v6.h b/sysdep/cf/linux-v6.h new file mode 100644 index 00000000..de397fc1 --- /dev/null +++ b/sysdep/cf/linux-v6.h @@ -0,0 +1,13 @@ +/* + * Configuration for Linux 2.1 based systems running IPv6 + * + * (c) 1998 Martin Mares <mj@ucw.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#define IPV6 + +#define CONFIG_TOS +#define CONFIG_MULTIPATH +#define CONFIG_NETLINK diff --git a/sysdep/config.h b/sysdep/config.h new file mode 100644 index 00000000..e83a5088 --- /dev/null +++ b/sysdep/config.h @@ -0,0 +1,50 @@ +/* + * This is a manually generated BIRD configuration file. + * It will be replaced by something better when we come + * with an automated configuration mechanism. [mj] + */ + +#ifndef _BIRD_CONFIG_H_ +#define _BIRD_CONFIG_H_ + +/* System-dependent configuration */ + +#include <sysdep/cf/linux-20.h> + +/* Include debugging code */ + +#define DEBUG + +/* Types */ + +typedef signed char s8; +typedef unsigned char u8; +typedef short int s16; +typedef unsigned short int u16; +typedef int s32; +typedef unsigned int u32; + +typedef u8 byte; +typedef u16 word; + +/* Endianity */ + +#define CPU_LITTLE_ENDIAN + +/* Required alignment for multi-byte accesses */ + +#define CPU_NEEDS_ALIGN_WORD 1 +#define CPU_NEEDS_ALIGN_LONG 1 + +/* Usual alignment for structures */ + +#define CPU_STRUCT_ALIGN 4 + +/* Protocol options */ + +#define CONFIG_STATIC +#define CONFIG_RIP +#define CONFIG_BGP +#define CONFIG_OSPF + +#endif diff --git a/sysdep/linux/Makefile b/sysdep/linux/Makefile new file mode 100644 index 00000000..a81db06d --- /dev/null +++ b/sysdep/linux/Makefile @@ -0,0 +1 @@ +include $(TOPDIR)/Rules |