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-rw-r--r--proto/ospf/ospf.h505
1 files changed, 344 insertions, 161 deletions
diff --git a/proto/ospf/ospf.h b/proto/ospf/ospf.h
index 7f0ee54..5a11418 100644
--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -18,6 +18,7 @@
* normally allocate 2*mtu - (I found one cisco
* sending packets mtu+16)
*/
+#define LOCAL_DEBUG 1
#ifdef LOCAL_DEBUG
#define OSPF_FORCE_DEBUG 1
#else
@@ -49,13 +50,17 @@ do { if ((p->debug & D_PACKETS) || OSPF_FORCE_DEBUG) \
#include "lib/string.h"
#define OSPF_PROTO 89
+
#ifndef IPV6
+#define OSPFv2 1
#define OSPF_VERSION 2
#define AllSPFRouters ipa_from_u32(0xe0000005) /* 224.0.0.5 */
#define AllDRouters ipa_from_u32(0xe0000006) /* 224.0.0.6 */
-#define DEFAULTDES ipa_from_u32(0)
#else
-#error OSPF for IPv6 is not implemented (mail to Feela <feela@network.cz>)
+#define OSPFv3 1
+#define OSPF_VERSION 3
+#define AllSPFRouters _MI(0xFF020000, 0, 0, 5) /* FF02::5 */
+#define AllDRouters _MI(0xFF020000, 0, 0, 6) /* FF02::6 */
#endif
@@ -118,32 +123,37 @@ struct ospf_area_config
list stubnet_list;
};
-struct obits
-{
-#ifdef CPU_BIG_ENDIAN
- u8 unused2:2;
- u8 dc:1;
- u8 ea:1;
- u8 np:1;
- u8 mc:1;
- u8 e:1;
- u8 unused1:1;
-#else
- u8 unused1:1;
- u8 e:1;
- u8 mc:1;
- u8 np:1;
- u8 ea:1;
- u8 dc:1;
- u8 unused2:2;
+
+/* Option flags */
+
+#define OPT_E 0x02
+#define OPT_N 0x08
+#define OPT_DC 0x20
+
+#ifdef OSPFv2
+#define OPT_EA 0x10
+
+/* VEB flags are are stored independently in 'u16 options' */
+#define OPT_RT_B (0x01 << 8)
+#define OPT_RT_E (0x02 << 8)
+#define OPT_RT_V (0x04 << 8)
#endif
-};
-union options
-{
- u8 byte;
- struct obits bit;
-};
+#ifdef OSPFv3
+#define OPT_V6 0x01
+#define OPT_R 0x10
+
+/* VEB flags are are stored together with options in 'u32 options' */
+#define OPT_RT_B (0x01 << 24)
+#define OPT_RT_E (0x02 << 24)
+#define OPT_RT_V (0x04 << 24)
+#define OPT_RT_NT (0x10 << 24)
+
+#define OPT_PX_NU 0x01
+#define OPT_PX_LA 0x02
+#define OPT_PX_P 0x08
+#define OPT_PX_DN 0x10
+#endif
struct ospf_iface
@@ -152,9 +162,7 @@ struct ospf_iface
struct iface *iface; /* Nest's iface */
struct ospf_area *oa;
struct object_lock *lock;
- sock *hello_sk; /* Hello socket */
- sock *dr_sk; /* For states DR or BACKUP */
- sock *ip_sk; /* IP socket (for DD ...) */
+ sock *sk; /* IP socket (for DD ...) */
list neigh_list; /* List of neigbours */
u32 cost; /* Cost of iface */
u32 waitint; /* number of sec before changing state from wait */
@@ -167,15 +175,27 @@ struct ospf_iface
u16 inftransdelay; /* The estimated number of seconds it takes to
transmit a Link State Update Packet over this
interface. LSAs contained in the update */
- u16 autype;
u16 helloint; /* number of seconds between hello sending */
+
+#ifdef OSPFv2
list *passwords;
+ u16 autype;
u32 csn; /* Last used crypt seq number */
bird_clock_t csn_use; /* Last time when packet with that CSN was sent */
+#endif
+
ip_addr drip; /* Designated router */
u32 drid;
ip_addr bdrip; /* Backup DR */
u32 bdrid;
+
+#ifdef OSPFv3
+ u32 dr_iface_id; /* if drid is valid, this is iface_id of DR (for connecting network) */
+ u8 instance_id; /* Used to differentiate between more OSPF
+ instances on one interface */
+ ip_addr lladdr; /* Used link-local addr */
+#endif
+
u8 type; /* OSPF view of type */
#define OSPF_IT_BCAST 0
#define OSPF_IT_NBMA 1
@@ -206,15 +226,21 @@ struct ospf_iface
#define HELLOINT_D 10
#define POLLINT_D 20
#define DEADC_D 4
-#define WAIT_DMH 4 /* Value of Wait timer - not found it in RFC
- * - using 4*HELLO
- */
- struct top_hash_entry *nlsa; /* Originated net lsa */
- int orignet; /* Schedule network LSA origination */
- int fadj; /* Number of full adjacent neigh */
+#define WAIT_DMH 4
+ /* Value of Wait timer - not found it in RFC * - using 4*HELLO */
+
+ struct top_hash_entry *net_lsa; /* Originated network LSA */
+ int orignet; /* Schedule network LSA origination */
+#ifdef OSPFv3
+ int origlink; /* Schedule link LSA origination */
+ struct top_hash_entry *link_lsa; /* Originated link LSA */
+ struct top_hash_entry *pxn_lsa; /* Originated prefix LSA */
+#endif
+ int fadj; /* Number of full adjacent neigh */
list nbma_list;
- u8 priority; /* A router priority for DR election */
+ u8 priority; /* A router priority for DR election */
u8 ioprob;
+ u8 dr_up; /* Socket is a member of DRouters group */
u32 rxbuf;
};
@@ -232,35 +258,17 @@ union ospf_auth
struct ospf_md5 md5;
};
-struct ospf_packet
-{
- u8 version;
- u8 type;
+
+/* Packet types */
#define HELLO_P 1 /* Hello */
#define DBDES_P 2 /* Database description */
#define LSREQ_P 3 /* Link state request */
#define LSUPD_P 4 /* Link state update */
#define LSACK_P 5 /* Link state acknowledgement */
- u16 length;
- u32 routerid;
- u32 areaid;
+
+/* Area IDs */
#define BACKBONE 0
- u16 checksum;
- u16 autype;
- union ospf_auth u;
-};
-struct ospf_hello_packet
-{
- struct ospf_packet ospf_packet;
- ip_addr netmask;
- u16 helloint;
- u8 options;
- u8 priority;
- u32 deadint;
- ip_addr dr;
- ip_addr bdr;
-};
struct immsb
{
@@ -282,164 +290,326 @@ union imms
u8 byte;
struct immsb bit;
};
-
-struct ospf_dbdes_packet
-{
- struct ospf_packet ospf_packet;
- u16 iface_mtu;
- u8 options;
- union imms imms; /* I, M, MS bits */
#define DBDES_MS 1
#define DBDES_M 2
#define DBDES_I 4
- u32 ddseq;
+
+
+#ifdef OSPFv2
+
+struct ospf_packet
+{
+ u8 version;
+ u8 type;
+ u16 length;
+ u32 routerid;
+ u32 areaid;
+ u16 checksum;
+ u16 autype;
+ union ospf_auth u;
};
+#else /* OSPFv3 packet descriptions */
+
+struct ospf_packet
+{
+ u8 version;
+ u8 type;
+ u16 length;
+ u32 routerid;
+ u32 areaid;
+ u16 checksum;
+ u8 instance_id;
+ u8 zero;
+};
+
+
+#endif
+
+
+
+
struct ospf_lsa_header
{
u16 age; /* LS Age */
#define LSA_MAXAGE 3600 /* 1 hour */
#define LSA_CHECKAGE 300 /* 5 minutes */
#define LSA_MAXAGEDIFF 900 /* 15 minutes */
+
+#ifdef OSPFv2
u8 options;
u8 type;
+
+#define LSA_T_RT 1
+#define LSA_T_NET 2
+#define LSA_T_SUM_NET 3
+#define LSA_T_SUM_RT 4
+#define LSA_T_EXT 5
+
+#define LSA_SCOPE_AREA 0x2000
+#define LSA_SCOPE_AS 0x4000
+
+#define LSA_SCOPE(lsa) (((lsa)->type == LSA_T_EXT) ? LSA_SCOPE_AS : LSA_SCOPE_AREA)
+
+#else /* OSPFv3 */
+ u16 type;
+
+#define LSA_T_RT 0x2001
+#define LSA_T_NET 0x2002
+#define LSA_T_SUM_NET 0x2003
+#define LSA_T_SUM_RT 0x2004
+#define LSA_T_EXT 0x4005
+#define LSA_T_LINK 0x0008
+#define LSA_T_PREFIX 0x2009
+
+#define LSA_UBIT 0x8000
+
+#define LSA_SCOPE_LINK 0x0000
+#define LSA_SCOPE_AREA 0x2000
+#define LSA_SCOPE_AS 0x4000
+#define LSA_SCOPE_RES 0x6000
+#define LSA_SCOPE_MASK 0x6000
+
+#define LSA_SCOPE(lsa) ((lsa)->type & LSA_SCOPE_MASK)
+#endif
+
u32 id;
-#define LSA_T_RT 1
-#define LSA_T_NET 2
-#define LSA_T_SUM_NET 3
-#define LSA_T_SUM_RT 4
-#define LSA_T_EXT 5
u32 rt; /* Advertising router */
s32 sn; /* LS Sequence number */
-#define LSA_INITSEQNO 0x80000001
-#define LSA_MAXSEQNO 0x7fffffff
+#define LSA_INITSEQNO ((s32) 0x80000001)
+#define LSA_MAXSEQNO ((s32) 0x7fffffff)
u16 checksum;
u16 length;
};
-struct vebb
-{
-#ifdef CPU_BIG_ENDIAN
- u8 padding:5;
- u8 v:1;
- u8 e:1;
- u8 b:1;
-#else
- u8 b:1;
- u8 e:1;
- u8 v:1;
- u8 padding:5;
-#endif
-};
-union veb
-{
- u8 byte;
- struct vebb bit;
-};
+#define LSART_PTP 1
+#define LSART_NET 2
+#define LSART_STUB 3
+#define LSART_VLNK 4
+
+
+#ifdef OSPFv2
struct ospf_lsa_rt
{
- union veb veb;
- u8 padding;
+#ifdef CPU_BIG_ENDIAN
+ u16 options; /* VEB flags only */
+ u16 links;
+#else
u16 links;
+ u16 options; /* VEB flags only */
+#endif
};
struct ospf_lsa_rt_link
{
u32 id;
u32 data;
+#ifdef CPU_BIG_ENDIAN
u8 type;
-#define LSART_PTP 1
-#define LSART_NET 2
-#define LSART_STUB 3
-#define LSART_VLNK 4
- u8 notos;
- u16 metric;
-};
-
-struct ospf_lsa_rt_link_tos
-{ /* Actually we ignore TOS. This is useless */
- u8 tos;
u8 padding;
u16 metric;
+#else
+ u16 metric;
+ u8 padding;
+ u8 type;
+#endif
};
struct ospf_lsa_net
{
ip_addr netmask;
+ u32 routers[];
};
struct ospf_lsa_sum
{
ip_addr netmask;
+ u32 metric;
};
-
struct ospf_lsa_ext
{
ip_addr netmask;
+ u32 metric;
+ ip_addr fwaddr;
+ u32 tag;
};
-struct ospf_lsa_ext_etos
+#define LSA_SUM_TOS 0xFF000000
+#define LSA_EXT_TOS 0x7F000000
+#define LSA_EXT_EBIT 0x80000000
+
+/* Endianity swap for lsa->type */
+#define ntoht(x) x
+#define htont(x) x
+
+
+#else /* OSPFv3 */
+
+struct ospf_lsa_rt
{
-#ifdef CPU_BIG_ENDIAN
- u8 ebit:1;
- u8 tos:7;
- u8 padding1;
- u16 padding2;
-#else
- u16 padding2;
- u8 padding1;
- u8 tos:7;
- u8 ebit:1;
-#endif
+ u32 options;
};
-#define METRIC_MASK 0x00FFFFFF
-struct ospf_lsa_sum_tos
+struct ospf_lsa_rt_link
{
#ifdef CPU_BIG_ENDIAN
- u8 tos;
- u8 padding1;
- u16 padding2;
+ u8 type;
+ u8 padding;
+ u16 metric;
#else
- u16 padding2;
- u8 padding1;
- u8 tos;
+ u16 metric;
+ u8 padding;
+ u8 type;
#endif
+ u32 lif; /* Local interface ID */
+ u32 nif; /* Neighbor interface ID */
+ u32 id; /* Neighbor router ID */
};
-union ospf_lsa_sum_tm
+struct ospf_lsa_net
+{
+ u32 options;
+ u32 routers[];
+};
+
+struct ospf_lsa_sum_net
{
- struct ospf_lsa_sum_tos tos;
u32 metric;
+ u32 prefix[];
};
-union ospf_lsa_ext_etm
+struct ospf_lsa_sum_rt
{
- struct ospf_lsa_ext_etos etos;
+ u32 options;
u32 metric;
+ u32 drid;
};
-struct ospf_lsa_ext_tos
+struct ospf_lsa_ext
{
- union ospf_lsa_ext_etm etm;
- ip_addr fwaddr;
- u32 tag;
+ u32 metric;
+ u32 rest[];
+};
+
+struct ospf_lsa_link
+{
+ u32 options;
+ ip_addr lladdr;
+ u32 pxcount;
+ u32 rest[];
};
-struct ospf_lsreq_packet
+struct ospf_lsa_prefix
{
- struct ospf_packet ospf_packet;
+#ifdef CPU_BIG_ENDIAN
+ u16 pxcount;
+ u16 ref_type;
+#else
+ u16 ref_type;
+ u16 pxcount;
+#endif
+ u32 ref_id;
+ u32 ref_rt;
+ u32 rest[];
};
+#define LSA_EXT_EBIT 0x4000000
+#define LSA_EXT_FBIT 0x2000000
+#define LSA_EXT_TBIT 0x1000000
+
+/* Endianity swap for lsa->type */
+#define ntoht(x) ntohs(x)
+#define htont(x) htons(x)
+
+#endif
+
+#define METRIC_MASK 0x00FFFFFF
+#define OPTIONS_MASK 0x00FFFFFF
+
+static inline unsigned
+lsa_rt_count(struct ospf_lsa_header *lsa)
+{
+ return (lsa->length - sizeof(struct ospf_lsa_header) - sizeof(struct ospf_lsa_rt))
+ / sizeof(struct ospf_lsa_rt_link);
+}
+
+static inline unsigned
+lsa_net_count(struct ospf_lsa_header *lsa)
+{
+ return (lsa->length - sizeof(struct ospf_lsa_header) - sizeof(struct ospf_lsa_net))
+ / sizeof(u32);
+}
+
+
+#ifdef OSPFv3
+
+#define IPV6_PREFIX_SPACE(x) ((((x) + 63) / 32) * 4)
+#define IPV6_PREFIX_WORDS(x) (((x) + 63) / 32)
+
+static inline u32 *
+lsa_get_ipv6_prefix(u32 *buf, ip_addr *addr, int *pxlen, u8 *pxopts, u16 *rest)
+{
+ u8 pxl = (*buf >> 24);
+ *pxopts = (*buf >> 16);
+ *rest = *buf;
+ *pxlen = pxl;
+ buf++;
+
+ *addr = IPA_NONE;
+
+ if (pxl > 0)
+ _I0(*addr) = *buf++;
+ if (pxl > 32)
+ _I1(*addr) = *buf++;
+ if (pxl > 64)
+ _I2(*addr) = *buf++;
+ if (pxl > 96)
+ _I3(*addr) = *buf++;
+
+ return buf;
+}
+
+static inline u32 *
+lsa_get_ipv6_addr(u32 *buf, ip_addr *addr)
+{
+ *addr = *(ip_addr *) buf;
+ return buf + 4;
+}
+
+static inline u32 *
+put_ipv6_prefix(u32 *buf, ip_addr addr, u8 pxlen, u8 pxopts, u16 lh)
+{
+ *buf++ = ((pxlen << 24) | (pxopts << 16) | lh);
+
+ if (pxlen > 0)
+ *buf++ = _I0(addr);
+ if (pxlen > 32)
+ *buf++ = _I1(addr);
+ if (pxlen > 64)
+ *buf++ = _I2(addr);
+ if (pxlen > 96)
+ *buf++ = _I3(addr);
+ return buf;
+}
+
+static inline u32 *
+put_ipv6_addr(u32 *buf, ip_addr addr)
+{
+ *(ip_addr *) buf = addr;
+ return buf + 4;
+}
+
+#endif
+
+
+
struct ospf_lsreq_header
{
- u16 padd1;
- u8 padd2;
- u8 type;
+ u32 type;
u32 id;
u32 rt; /* Advertising router */
};
@@ -450,17 +620,6 @@ struct l_lsr_head
struct ospf_lsreq_header lsh;
};
-struct ospf_lsupd_packet
-{
- struct ospf_packet ospf_packet;
- u32 lsano; /* Number of LSA's */
-};
-
-struct ospf_lsack_packet
-{
- struct ospf_packet ospf_packet;
-};
-
struct ospf_neighbor
{
@@ -484,10 +643,18 @@ struct ospf_neighbor
u32 rid; /* Router ID */
ip_addr ip; /* IP of it's interface */
u8 priority; /* Priority */
- u8 options; /* Options received */
- ip_addr dr; /* Neigbour's idea of DR */
- ip_addr bdr; /* Neigbour's idea of BDR */
u8 adj; /* built adjacency? */
+ u32 options; /* Options received */
+
+ /* dr and bdr store IP address in OSPFv2 and router ID in OSPFv3,
+ we use the same type to simplify handling */
+ u32 dr; /* Neigbour's idea of DR */
+ u32 bdr; /* Neigbour's idea of BDR */
+
+#ifdef OSPFv3
+ u32 iface_id; /* ID of Neighbour's iface connected to common network */
+#endif
+
siterator dbsi; /* Database summary list iterator */
slist lsrql; /* Link state request */
struct top_graph *lsrqh; /* LSA graph */
@@ -535,13 +702,14 @@ struct ospf_area
struct ospf_area_config *ac; /* Related area config */
int origrt; /* Rt lsa origination scheduled? */
struct top_hash_entry *rt; /* My own router LSA */
+ struct top_hash_entry *pxr_lsa; /* Originated prefix LSA */
list cand; /* List of candidates for RT calc. */
struct fib net_fib; /* Networks to advertise or not */
int stub;
int trcap; /* Transit capability? */
+ u32 options; /* Optional features */
struct proto_ospf *po;
struct fib rtr; /* Routing tables for routers */
- union options opt; /* RFC2328 - A.2 */
};
struct proto_ospf
@@ -577,20 +745,28 @@ struct ospf_iface_patt
u32 deadc;
u32 dead;
u32 type;
- u32 autype;
u32 strictnbma;
u32 stub;
u32 vid;
-#define OSPF_AUTH_NONE 0
-#define OSPF_AUTH_SIMPLE 1
-#define OSPF_AUTH_CRYPT 2
-#define OSPF_AUTH_CRYPT_SIZE 16
u32 rxbuf;
#define OSPF_RXBUF_NORMAL 0
#define OSPF_RXBUF_LARGE 1
#define OSPF_RXBUF_MINSIZE 256 /* Minimal allowed size */
- list *passwords;
list nbma_list;
+
+ u32 autype; /* Not really used in OSPFv3 */
+#define OSPF_AUTH_NONE 0
+#define OSPF_AUTH_SIMPLE 1
+#define OSPF_AUTH_CRYPT 2
+#define OSPF_AUTH_CRYPT_SIZE 16
+
+#ifdef OSPFv2
+ list *passwords;
+#endif
+
+#ifdef OSPFv3
+ u8 instance_id;
+#endif
};
int ospf_import_control(struct proto *p, rte **new, ea_list **attrs,
@@ -600,6 +776,13 @@ void ospf_store_tmp_attrs(struct rte *rt, struct ea_list *attrs);
void schedule_rt_lsa(struct ospf_area *oa);
void schedule_rtcalc(struct proto_ospf *po);
void schedule_net_lsa(struct ospf_iface *ifa);
+
+#ifdef OSPFv3
+void schedule_link_lsa(struct ospf_iface *ifa);
+#else
+static inline void schedule_link_lsa(struct ospf_iface *ifa) {}
+#endif
+
void ospf_sh_neigh(struct proto *p, char *iff);
void ospf_sh(struct proto *p);
void ospf_sh_iface(struct proto *p, char *iff);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 22:21:47 +0100