Annotation of embedaddon/bird2/proto/ospf/ospf.h, revision 1.1
1.1 ! misho 1: /*
! 2: * BIRD -- OSPF
! 3: *
! 4: * (c) 1999--2005 Ondrej Filip <feela@network.cz>
! 5: * (c) 2009--2014 Ondrej Zajicek <santiago@crfreenet.org>
! 6: * (c) 2009--2014 CZ.NIC z.s.p.o.
! 7: *
! 8: * Can be freely distributed and used under the terms of the GNU GPL.
! 9: */
! 10:
! 11: #ifndef _BIRD_OSPF_H_
! 12: #define _BIRD_OSPF_H_
! 13:
! 14: #include "nest/bird.h"
! 15:
! 16: #include "lib/checksum.h"
! 17: #include "lib/idm.h"
! 18: #include "lib/lists.h"
! 19: #include "lib/slists.h"
! 20: #include "lib/socket.h"
! 21: #include "lib/timer.h"
! 22: #include "lib/resource.h"
! 23: #include "nest/protocol.h"
! 24: #include "nest/iface.h"
! 25: #include "nest/route.h"
! 26: #include "nest/cli.h"
! 27: #include "nest/locks.h"
! 28: #include "nest/bfd.h"
! 29: #include "conf/conf.h"
! 30: #include "lib/string.h"
! 31:
! 32:
! 33: #ifdef LOCAL_DEBUG
! 34: #define OSPF_FORCE_DEBUG 1
! 35: #else
! 36: #define OSPF_FORCE_DEBUG 0
! 37: #endif
! 38:
! 39:
! 40: #define OSPF_TRACE(flags, msg, args...) \
! 41: do { if ((p->p.debug & flags) || OSPF_FORCE_DEBUG) \
! 42: log(L_TRACE "%s: " msg, p->p.name , ## args ); } while(0)
! 43:
! 44: #define OSPF_PACKET(dumpfn, buffer, msg, args...) \
! 45: do { if ((p->p.debug & D_PACKETS) || OSPF_FORCE_DEBUG) \
! 46: { log(L_TRACE "%s: " msg, p->p.name, ## args ); dumpfn(p, buffer); } } while(0)
! 47:
! 48: #define LOG_PKT(msg, args...) \
! 49: log_rl(&p->log_pkt_tbf, L_REMOTE "%s: " msg, p->p.name, args)
! 50:
! 51: #define LOG_PKT_AUTH(msg, args...) \
! 52: log_rl(&p->log_pkt_tbf, L_AUTH "%s: " msg, p->p.name, args)
! 53:
! 54: #define LOG_PKT_WARN(msg, args...) \
! 55: log_rl(&p->log_pkt_tbf, L_WARN "%s: " msg, p->p.name, args)
! 56:
! 57: #define LOG_LSA1(msg, args...) \
! 58: log_rl(&p->log_lsa_tbf, L_REMOTE "%s: " msg, p->p.name, args)
! 59:
! 60: #define LOG_LSA2(msg, args...) \
! 61: do { if (! p->log_lsa_tbf.drop) \
! 62: log(L_REMOTE "%s: " msg, p->p.name, args); } while(0)
! 63:
! 64:
! 65: #define OSPF_PROTO 89
! 66:
! 67: #define LSREFRESHTIME 1800 /* 30 minutes */
! 68: #define MINLSINTERVAL (5 S_)
! 69: #define MINLSARRIVAL (1 S_)
! 70: #define LSINFINITY 0xffffff
! 71:
! 72: #define OSPF_PKT_TYPES 5 /* HELLO_P .. LSACK_P */
! 73: #define OSPF3_CRYPTO_ID 1 /* OSPFv3 Cryptographic Protocol ID */
! 74:
! 75: #define OSPF_DEFAULT_TICK 1
! 76: #define OSPF_DEFAULT_STUB_COST 1000
! 77: #define OSPF_DEFAULT_ECMP_LIMIT 16
! 78: #define OSPF_DEFAULT_GR_TIME 120
! 79: #define OSPF_DEFAULT_TRANSINT 40
! 80:
! 81: #define OSPF_MIN_PKT_SIZE 256
! 82: #define OSPF_MAX_PKT_SIZE 65535
! 83:
! 84: #define OSPF_VLINK_ID_OFFSET 0x80000000
! 85:
! 86: #define OSPF_GR_ABLE 1
! 87: #define OSPF_GR_AWARE 2
! 88:
! 89: struct ospf_config
! 90: {
! 91: struct proto_config c;
! 92: uint tick;
! 93: u8 ospf2;
! 94: u8 af_ext;
! 95: u8 af_mc;
! 96: u8 rfc1583;
! 97: u8 stub_router;
! 98: u8 merge_external;
! 99: u8 instance_id;
! 100: u8 instance_id_set;
! 101: u8 abr;
! 102: u8 asbr;
! 103: u8 vpn_pe;
! 104: u8 gr_mode; /* Graceful restart mode (OSPF_GR_*) */
! 105: uint gr_time; /* Graceful restart interval */
! 106: uint ecmp;
! 107: list area_list; /* list of area configs (struct ospf_area_config) */
! 108: list vlink_list; /* list of configured vlinks (struct ospf_iface_patt) */
! 109: };
! 110:
! 111: struct ospf_area_config
! 112: {
! 113: node n;
! 114: u32 areaid;
! 115: u32 default_cost; /* Cost of default route for stub areas
! 116: (With possible LSA_EXT3_EBIT for NSSA areas) */
! 117: u8 type; /* Area type (standard, stub, NSSA), represented
! 118: by option flags (OPT_E, OPT_N) */
! 119: u8 summary; /* Import summaries to this stub/NSSA area, valid for ABR */
! 120: u8 default_nssa; /* Generate default NSSA route for NSSA+summary area */
! 121: u8 translator; /* Translator role, for NSSA ABR */
! 122: u32 transint; /* Translator stability interval */
! 123: list patt_list; /* List of iface configs (struct ospf_iface_patt) */
! 124: list net_list; /* List of aggregate networks for that area */
! 125: list enet_list; /* List of aggregate external (NSSA) networks */
! 126: list stubnet_list; /* List of stub networks added to Router LSA */
! 127: };
! 128:
! 129: struct area_net_config
! 130: {
! 131: node n;
! 132: net_addr prefix;
! 133: u32 tag;
! 134: u8 hidden;
! 135: };
! 136:
! 137: struct area_net
! 138: {
! 139: u32 metric; /* With possible LSA_EXT3_EBIT for NSSA area nets */
! 140: u32 tag;
! 141: u8 hidden;
! 142: u8 active;
! 143: struct fib_node fn;
! 144: };
! 145:
! 146: struct ospf_stubnet_config
! 147: {
! 148: node n;
! 149: net_addr prefix;
! 150: u32 cost;
! 151: u8 hidden;
! 152: u8 summary;
! 153: };
! 154:
! 155: struct nbma_node
! 156: {
! 157: node n;
! 158: ip_addr ip;
! 159: byte eligible;
! 160: byte found;
! 161: };
! 162:
! 163: struct ospf_iface_patt
! 164: {
! 165: struct iface_patt i;
! 166: u32 type;
! 167: u32 stub;
! 168: u32 cost;
! 169: u32 helloint;
! 170: u32 rxmtint;
! 171: u32 pollint;
! 172: u32 waitint;
! 173: u32 deadc;
! 174: u32 deadint;
! 175: u32 inftransdelay;
! 176: list nbma_list;
! 177: u32 priority;
! 178: u32 voa;
! 179: u32 vid;
! 180: int tx_tos;
! 181: int tx_priority;
! 182: u16 tx_length;
! 183: u16 rx_buffer;
! 184: #define OSPF_RXBUF_MINSIZE 256 /* Minimal allowed size */
! 185: u8 instance_id;
! 186: u8 instance_id_set;
! 187: u8 autype; /* OSPF_AUTH_*, not really used in OSPFv3 */
! 188: u8 strictnbma;
! 189: u8 check_link;
! 190: u8 ecmp_weight;
! 191: u8 link_lsa_suppression;
! 192: u8 real_bcast; /* Not really used in OSPFv3 */
! 193: u8 ptp_netmask; /* bool + 2 for unspecified */
! 194: u8 ttl_security; /* bool + 2 for TX only */
! 195: u8 bfd;
! 196: list *passwords;
! 197: };
! 198:
! 199: /* Default values for interface parameters */
! 200: #define COST_D 10
! 201: #define RXMTINT_D 5
! 202: #define INFTRANSDELAY_D 1
! 203: #define PRIORITY_D 1
! 204: #define HELLOINT_D 10
! 205: #define POLLINT_D 20
! 206: #define DEADC_D 4
! 207: #define WAIT_DMH 4
! 208: /* Value of Wait timer - not found it in RFC * - using 4*HELLO */
! 209:
! 210:
! 211:
! 212: struct ospf_proto
! 213: {
! 214: struct proto p;
! 215: timer *disp_timer; /* OSPF proto dispatcher */
! 216: uint tick;
! 217: struct top_graph *gr; /* LSA graph */
! 218: slist lsal; /* List of all LSA's */
! 219: int calcrt; /* Routing table calculation scheduled?
! 220: 0=no, 1=normal, 2=forced reload */
! 221: list iface_list; /* List of OSPF interfaces (struct ospf_iface) */
! 222: list area_list; /* List of OSPF areas (struct ospf_area) */
! 223: int areano; /* Number of area I belong to */
! 224: int padj; /* Number of neighbors in Exchange or Loading state */
! 225: int gr_count; /* Number of neighbors in graceful restart state */
! 226: u8 gr_recovery; /* Graceful restart recovery is active */
! 227: u8 gr_cleanup; /* GR cleanup scheduled */
! 228: btime gr_timeout; /* The end time of grace restart recovery */
! 229: struct fib rtf; /* Routing table */
! 230: struct idm idm; /* OSPFv3 LSA ID map */
! 231: u8 ospf2; /* OSPF v2 or v3 */
! 232: u8 af_ext; /* OSPFv3-AF extension */
! 233: u8 af_mc; /* OSPFv3-AF multicast */
! 234: u8 rfc1583; /* RFC1583 compatibility */
! 235: u8 stub_router; /* Do not forward transit traffic */
! 236: u8 merge_external; /* Should i merge external routes? */
! 237: u8 instance_id; /* Differentiate between more OSPF instances */
! 238: u8 asbr; /* May i originate any ext/NSSA lsa? */
! 239: u8 vpn_pe; /* Should we do VPN PE specific behavior (RFC 4577)? */
! 240: u8 ecmp; /* Maximal number of nexthops in ECMP route, or 0 */
! 241: u8 gr_mode; /* Graceful restart mode (OSPF_GR_*) */
! 242: uint gr_time; /* Graceful restart interval */
! 243: u64 csn64; /* Last used cryptographic sequence number */
! 244: struct ospf_area *backbone; /* If exists */
! 245: event *flood_event; /* Event for flooding LS updates */
! 246: void *lsab; /* LSA buffer used when originating router LSAs */
! 247: int lsab_size, lsab_used;
! 248: linpool *nhpool; /* Linpool used for next hops computed in SPF */
! 249: sock *vlink_sk; /* IP socket used for vlink TX */
! 250: u32 router_id;
! 251: u32 last_vlink_id; /* Interface IDs for vlinks (starts at 0x80000000) */
! 252: struct tbf log_pkt_tbf; /* TBF for packet messages */
! 253: struct tbf log_lsa_tbf; /* TBF for LSA messages */
! 254: };
! 255:
! 256: struct ospf_area
! 257: {
! 258: node n;
! 259: u32 areaid;
! 260: struct ospf_area_config *ac; /* Related area config */
! 261: struct top_hash_entry *rt; /* My own router LSA */
! 262: struct top_hash_entry *pxr_lsa; /* Originated prefix LSA */
! 263: list cand; /* List of candidates for RT calc. */
! 264: struct fib net_fib; /* Networks to advertise or not */
! 265: struct fib enet_fib; /* External networks for NSSAs */
! 266: u32 options; /* Optional features */
! 267: u8 update_rt_lsa; /* Rt lsa origination scheduled? */
! 268: u8 trcap; /* Transit capability? */
! 269: u8 marked; /* Used in OSPF reconfigure */
! 270: u8 translate; /* Translator state (TRANS_*), for NSSA ABR */
! 271: timer *translator_timer; /* For NSSA translator switch */
! 272: struct ospf_proto *po;
! 273: struct fib rtr; /* Routing tables for routers */
! 274: };
! 275:
! 276: struct ospf_iface
! 277: {
! 278: node n;
! 279: struct iface *iface; /* Nest's iface (NULL for vlinks) */
! 280: struct ifa *addr; /* IP prefix associated with that OSPF iface */
! 281: struct ospf_area *oa;
! 282: struct ospf_iface_patt *cf;
! 283: char *ifname; /* Interface name (iface->name), new one for vlinks */
! 284:
! 285: pool *pool;
! 286: sock *sk; /* IP socket */
! 287: list neigh_list; /* List of neighbors (struct ospf_neighbor) */
! 288: u32 cost; /* Cost of iface */
! 289: u32 waitint; /* Number of seconds before changing state from wait */
! 290: u32 rxmtint; /* Number of seconds between LSA retransmissions */
! 291: u32 pollint; /* Poll interval in seconds */
! 292: u32 deadint; /* After deadint seconds without hellos is router dead */
! 293: u32 iface_id; /* Interface ID (iface->index or new value for vlinks) */
! 294: u32 vid; /* ID of peer of virtual link */
! 295: ip_addr vip; /* IP of peer of virtual link */
! 296: struct ospf_iface *vifa; /* OSPF iface which the vlink goes through */
! 297: struct ospf_area *voa; /* OSPF area which the vlink goes through */
! 298: u16 inftransdelay; /* The estimated number of seconds it takes to
! 299: transmit a Link State Update Packet over this
! 300: interface. LSAs contained in the update */
! 301: u16 helloint; /* number of seconds between hello sending */
! 302: list *passwords;
! 303: u32 csn; /* Last used crypt seq number */
! 304: btime csn_use; /* Last time when packet with that CSN was sent */
! 305: ip_addr all_routers; /* Multicast (or broadcast) address for all routers */
! 306: ip_addr des_routers; /* Multicast (or NULL) address for designated routers */
! 307: ip_addr drip; /* Designated router IP */
! 308: ip_addr bdrip; /* Backup DR IP */
! 309: u32 drid; /* DR Router ID */
! 310: u32 bdrid; /* BDR Router ID */
! 311: s16 rt_pos_beg; /* Position of iface in Router-LSA, begin, inclusive */
! 312: s16 rt_pos_end; /* Position of iface in Router-LSA, end, exclusive */
! 313: s16 px_pos_beg; /* Position of iface in Rt Prefix-LSA, begin, inclusive */
! 314: s16 px_pos_end; /* Position of iface in Rt Prefix-LSA, end, exclusive */
! 315: u32 dr_iface_id; /* if drid is valid, this is iface_id of DR (for connecting network) */
! 316: u8 instance_id; /* Used to differentiate between more OSPF
! 317: instances on one interface */
! 318: u8 autype; /* Authentication type (OSPF_AUTH_*) */
! 319: u8 type; /* OSPF view of type (OSPF_IT_*) */
! 320: u8 strictnbma; /* Can I talk with unknown neighbors? */
! 321: u8 stub; /* Inactive interface */
! 322: u8 state; /* Interface state machine (OSPF_IS_*) */
! 323: timer *wait_timer; /* WAIT timer */
! 324: timer *hello_timer; /* HELLOINT timer */
! 325: timer *poll_timer; /* Poll Interval - for NBMA */
! 326:
! 327: struct top_hash_entry *link_lsa; /* Originated link LSA */
! 328: struct top_hash_entry *net_lsa; /* Originated network LSA */
! 329: struct top_hash_entry *pxn_lsa; /* Originated prefix LSA */
! 330: struct top_hash_entry **flood_queue; /* LSAs queued for LSUPD */
! 331: u8 update_link_lsa;
! 332: u8 update_net_lsa;
! 333: u16 flood_queue_used; /* The current number of LSAs in flood_queue */
! 334: u16 flood_queue_size; /* The maximum number of LSAs in flood_queue */
! 335: int fadj; /* Number of fully adjacent neighbors */
! 336: list nbma_list;
! 337: u8 priority; /* A router priority for DR election */
! 338: u8 ioprob;
! 339: #define OSPF_I_OK 0 /* Everything OK */
! 340: #define OSPF_I_SK 1 /* Socket open failed */
! 341: #define OSPF_I_LL 2 /* Missing link-local address (OSPFv3) */
! 342: u8 sk_dr; /* Socket is a member of designated routers group */
! 343: u8 marked; /* Used in OSPF reconfigure, 2 for force restart */
! 344: u16 rxbuf; /* Buffer size */
! 345: u16 tx_length; /* Soft TX packet length limit, usually MTU */
! 346: u16 tx_hdrlen; /* Expected packet header length, less than tx_length */
! 347: u8 check_link; /* Whether iface link change is used */
! 348: u8 ecmp_weight; /* Weight used for ECMP */
! 349: u8 link_lsa_suppression; /* Suppression of Link-LSA origination */
! 350: u8 ptp_netmask; /* Send real netmask for P2P */
! 351: u8 check_ttl; /* Check incoming packets for TTL 255 */
! 352: u8 bfd; /* Use BFD on iface */
! 353: };
! 354:
! 355: struct ospf_neighbor
! 356: {
! 357: node n;
! 358: pool *pool;
! 359: struct ospf_iface *ifa;
! 360: u8 state;
! 361: u8 gr_active; /* We act as GR helper for the neighbor */
! 362: u8 got_my_rt_lsa; /* Received my Rt-LSA in DBDES exchanged */
! 363: timer *inactim; /* Inactivity timer */
! 364: u8 imms; /* I, M, Master/slave received */
! 365: u8 myimms; /* I, M Master/slave */
! 366: u32 dds; /* DD Sequence number being sent */
! 367: u32 ddr; /* last Dat Des packet received */
! 368:
! 369: u32 rid; /* Router ID */
! 370: ip_addr ip; /* IP of it's interface */
! 371: u8 priority; /* Priority */
! 372: u32 options; /* Options received */
! 373:
! 374: /* Entries dr and bdr store IP addresses in OSPFv2 and router IDs in
! 375: OSPFv3, we use the same type to simplify handling */
! 376: u32 dr; /* Neighbor's idea of DR */
! 377: u32 bdr; /* Neighbor's idea of BDR */
! 378: u32 iface_id; /* ID of Neighbour's iface connected to common network */
! 379:
! 380: /* Database summary list iterator, controls initial dbdes exchange.
! 381: * Advances in the LSA list as dbdes packets are sent.
! 382: */
! 383: siterator dbsi; /* iterator of po->lsal */
! 384:
! 385: /* Link state request list, controls initial LSA exchange.
! 386: * Entries added when received in dbdes packets, removed as sent in lsreq packets.
! 387: */
! 388: slist lsrql; /* slist of struct top_hash_entry from n->lsrqh */
! 389: struct top_graph *lsrqh;
! 390: struct top_hash_entry *lsrqi; /* Pointer to the first unsent node in lsrql */
! 391:
! 392: /* Link state retransmission list, controls LSA retransmission during flood.
! 393: * Entries added as sent in lsupd packets, removed when received in lsack packets.
! 394: * These entries hold ret_count in appropriate LSA entries.
! 395: */
! 396: slist lsrtl; /* slist of struct top_hash_entry from n->lsrth */
! 397: struct top_graph *lsrth;
! 398: timer *dbdes_timer; /* DBDES exchange timer */
! 399: timer *lsrq_timer; /* LSA request timer */
! 400: timer *lsrt_timer; /* LSA retransmission timer */
! 401: list ackl[2];
! 402: #define ACKL_DIRECT 0
! 403: #define ACKL_DELAY 1
! 404: timer *ackd_timer; /* Delayed ack timer */
! 405: timer *gr_timer; /* Graceful restart timer, non-NULL only if gr_active */
! 406: struct bfd_request *bfd_req; /* BFD request, if BFD is used */
! 407: void *ldd_buffer; /* Last database description packet */
! 408: u32 ldd_bsize; /* Buffer size for ldd_buffer */
! 409: u32 csn; /* OSPFv2: Last received crypt seq number */
! 410: u64 csn64[OSPF_PKT_TYPES]; /* OSPFv3: Last received CSN for each type of packet */
! 411: };
! 412:
! 413:
! 414: /* OSPF interface types */
! 415: #define OSPF_IT_BCAST 0
! 416: #define OSPF_IT_NBMA 1
! 417: #define OSPF_IT_PTP 2
! 418: #define OSPF_IT_PTMP 3
! 419: #define OSPF_IT_VLINK 4
! 420: #define OSPF_IT_UNDEF 5
! 421:
! 422: /* OSPF interface states */
! 423: #define OSPF_IS_DOWN 0 /* Not active */
! 424: #define OSPF_IS_LOOP 1 /* Iface with no link */
! 425: #define OSPF_IS_WAITING 2 /* Waiting for Wait timer */
! 426: #define OSPF_IS_PTP 3 /* PTP operational */
! 427: #define OSPF_IS_DROTHER 4 /* I'm on BCAST or NBMA and I'm not DR */
! 428: #define OSPF_IS_BACKUP 5 /* I'm BDR */
! 429: #define OSPF_IS_DR 6 /* I'm DR */
! 430:
! 431: /* Definitions for interface state machine */
! 432: #define ISM_UP 0 /* Interface Up */
! 433: #define ISM_WAITF 1 /* Wait timer fired */
! 434: #define ISM_BACKS 2 /* Backup seen */
! 435: #define ISM_NEICH 3 /* Neighbor change */
! 436: #define ISM_LOOP 4 /* Link down */
! 437: #define ISM_UNLOOP 5 /* Link up */
! 438: #define ISM_DOWN 6 /* Interface down */
! 439:
! 440: /* OSPF authentication types */
! 441: #define OSPF_AUTH_NONE 0
! 442: #define OSPF_AUTH_SIMPLE 1
! 443: #define OSPF_AUTH_CRYPT 2
! 444:
! 445: #define OSPF3_AUTH_HMAC 1 /* HMAC Cryptographic Authentication */
! 446:
! 447: /* OSPF neighbor states */
! 448: #define NEIGHBOR_DOWN 0
! 449: #define NEIGHBOR_ATTEMPT 1
! 450: #define NEIGHBOR_INIT 2
! 451: #define NEIGHBOR_2WAY 3
! 452: #define NEIGHBOR_EXSTART 4
! 453: #define NEIGHBOR_EXCHANGE 5
! 454: #define NEIGHBOR_LOADING 6
! 455: #define NEIGHBOR_FULL 7
! 456:
! 457: /* Definitions for neighbor state machine */
! 458: #define INM_HELLOREC 0 /* Hello Received */
! 459: #define INM_START 1 /* Neighbor start - for NBMA */
! 460: #define INM_2WAYREC 2 /* 2-Way received */
! 461: #define INM_NEGDONE 3 /* Negotiation done */
! 462: #define INM_EXDONE 4 /* Exchange done */
! 463: #define INM_BADLSREQ 5 /* Bad LS Request */
! 464: #define INM_LOADDONE 6 /* Load done */
! 465: #define INM_ADJOK 7 /* AdjOK? */
! 466: #define INM_SEQMIS 8 /* Sequence number mismatch */
! 467: #define INM_1WAYREC 9 /* 1-Way */
! 468: #define INM_KILLNBR 10 /* Kill Neighbor */
! 469: #define INM_INACTTIM 11 /* Inactivity timer */
! 470: #define INM_LLDOWN 12 /* Line down */
! 471:
! 472: #define TRANS_OFF 0
! 473: #define TRANS_ON 1
! 474: #define TRANS_WAIT 2 /* Waiting before the end of translation */
! 475:
! 476:
! 477: /* Generic option flags */
! 478: #define OPT_V6 0x0001 /* OSPFv3, LSA relevant for IPv6 routing calculation */
! 479: #define OPT_E 0x0002 /* Related to AS-external LSAs */
! 480: #define OPT_MC 0x0004 /* Related to MOSPF, not used and obsolete */
! 481: #define OPT_N 0x0008 /* Related to NSSA */
! 482: #define OPT_P 0x0008 /* OSPFv2, flags P and N share position, see NSSA RFC */
! 483: #define OPT_L_V2 0x0010 /* OSPFv2, link-local signaling, not used */
! 484: #define OPT_R 0x0010 /* OSPFv3, originator is active router */
! 485: #define OPT_DC 0x0020 /* Related to demand circuits, not used */
! 486: #define OPT_O 0x0040 /* OSPFv2 Opaque LSA (RFC 5250) */
! 487: #define OPT_DN 0x0080 /* OSPFv2 VPN loop prevention (RFC 4576) */
! 488: #define OPT_AF 0x0100 /* OSPFv3 Address Families (RFC 5838) */
! 489: #define OPT_L_V3 0x0200 /* OSPFv3, link-local signaling */
! 490: #define OPT_AT 0x0400 /* OSPFv3, authentication trailer */
! 491:
! 492: #define HELLO2_OPT_MASK (OPT_E | OPT_N | OPT_L_V2)
! 493: #define DBDES2_OPT_MASK (OPT_E | OPT_L_V2 | OPT_O)
! 494:
! 495: #define HELLO3_OPT_MASK (OPT_V6 | OPT_E | OPT_N | OPT_R | OPT_AF | OPT_L_V3 | OPT_AT )
! 496: #define DBDES3_OPT_MASK (OPT_V6 | OPT_E | OPT_R | OPT_AF | OPT_L_V3 | OPT_AT )
! 497:
! 498: /* Router-LSA VEB flags are are stored together with links (OSPFv2) or options (OSPFv3) */
! 499: #define OPT_RT_B (0x01 << 24)
! 500: #define OPT_RT_E (0x02 << 24)
! 501: #define OPT_RT_V (0x04 << 24)
! 502: #define OPT_RT_NT (0x10 << 24)
! 503:
! 504: /* Prefix flags, specific for OSPFv3 */
! 505: #define OPT_PX_NU 0x01
! 506: #define OPT_PX_LA 0x02
! 507: #define OPT_PX_P 0x08
! 508: #define OPT_PX_DN 0x10
! 509:
! 510:
! 511: struct ospf_packet
! 512: {
! 513: u8 version;
! 514: u8 type;
! 515: u16 length;
! 516: u32 routerid;
! 517: u32 areaid;
! 518: u16 checksum;
! 519: u8 instance_id; /* See RFC 6549 */
! 520: u8 autype; /* Undefined for OSPFv3 */
! 521: };
! 522:
! 523: struct ospf_lls
! 524: {
! 525: u16 checksum;
! 526: u16 length;
! 527: byte data[0];
! 528: };
! 529:
! 530: struct ospf_auth_crypto
! 531: {
! 532: u16 zero;
! 533: u8 keyid;
! 534: u8 len;
! 535: u32 csn; /* Cryptographic sequence number (32-bit) */
! 536: };
! 537:
! 538: union ospf_auth2
! 539: {
! 540: u8 password[8];
! 541: struct ospf_auth_crypto c32;
! 542: };
! 543:
! 544: struct ospf_auth3
! 545: {
! 546: u16 type; /* Authentication type (OSPF3_AUTH_*) */
! 547: u16 length; /* Authentication trailer length (header + data) */
! 548: u16 reserved;
! 549: u16 sa_id; /* Security association identifier (key_id) */
! 550: u64 csn; /* Cryptographic sequence number (64-bit) */
! 551: byte data[0]; /* Authentication data */
! 552: };
! 553:
! 554:
! 555: /* Packet types */
! 556: #define HELLO_P 1 /* Hello */
! 557: #define DBDES_P 2 /* Database description */
! 558: #define LSREQ_P 3 /* Link state request */
! 559: #define LSUPD_P 4 /* Link state update */
! 560: #define LSACK_P 5 /* Link state acknowledgement */
! 561:
! 562:
! 563: #define DBDES_I 4 /* Init bit */
! 564: #define DBDES_M 2 /* More bit */
! 565: #define DBDES_MS 1 /* Master/Slave bit */
! 566: #define DBDES_IMMS (DBDES_I | DBDES_M | DBDES_MS)
! 567:
! 568:
! 569: /* OSPFv3 LSA Types / LSA Function Codes */
! 570: /* https://www.iana.org/assignments/ospfv3-parameters/ospfv3-parameters.xhtml#ospfv3-parameters-3 */
! 571: #define LSA_T_RT 0x2001
! 572: #define LSA_T_NET 0x2002
! 573: #define LSA_T_SUM_NET 0x2003
! 574: #define LSA_T_SUM_RT 0x2004
! 575: #define LSA_T_EXT 0x4005
! 576: #define LSA_T_NSSA 0x2007
! 577: #define LSA_T_LINK 0x0008
! 578: #define LSA_T_PREFIX 0x2009
! 579: #define LSA_T_GR 0x000B
! 580: #define LSA_T_RI_ 0x000C
! 581: #define LSA_T_RI_LINK 0x800C
! 582: #define LSA_T_RI_AREA 0xA00C
! 583: #define LSA_T_RI_AS 0xC00C
! 584: #define LSA_T_OPAQUE_ 0x1FFF
! 585: #define LSA_T_OPAQUE_LINK 0x9FFF
! 586: #define LSA_T_OPAQUE_AREA 0xBFFF
! 587: #define LSA_T_OPAQUE_AS 0xDFFF
! 588:
! 589: #define LSA_T_V2_OPAQUE_ 0x0009
! 590: #define LSA_T_V2_MASK 0x00ff
! 591:
! 592: /* OSPFv2 Opaque LSA Types */
! 593: /* https://www.iana.org/assignments/ospf-opaque-types/ospf-opaque-types.xhtml#ospf-opaque-types-2 */
! 594: #define LSA_OT_GR 0x03
! 595: #define LSA_OT_RI 0x04
! 596:
! 597: #define LSA_FUNCTION_MASK 0x1FFF
! 598: #define LSA_FUNCTION(type) ((type) & LSA_FUNCTION_MASK)
! 599:
! 600: #define LSA_UBIT 0x8000
! 601:
! 602: #define LSA_SCOPE_LINK 0x0000
! 603: #define LSA_SCOPE_AREA 0x2000
! 604: #define LSA_SCOPE_AS 0x4000
! 605: #define LSA_SCOPE_RES 0x6000
! 606: #define LSA_SCOPE_MASK 0x6000
! 607: #define LSA_SCOPE(type) ((type) & LSA_SCOPE_MASK)
! 608: #define LSA_SCOPE_ORDER(type) (((type) >> 13) & 0x3)
! 609:
! 610:
! 611: #define LSA_MAXAGE 3600 /* 1 hour */
! 612: #define LSA_CHECKAGE 300 /* 5 minutes */
! 613: #define LSA_MAXAGEDIFF 900 /* 15 minutes */
! 614:
! 615: #define LSA_ZEROSEQNO ((s32) 0x80000000)
! 616: #define LSA_INITSEQNO ((s32) 0x80000001)
! 617: #define LSA_MAXSEQNO ((s32) 0x7fffffff)
! 618:
! 619: #define LSA_METRIC_MASK 0x00FFFFFF
! 620: #define LSA_OPTIONS_MASK 0x00FFFFFF
! 621:
! 622:
! 623: #define LSART_PTP 1
! 624: #define LSART_NET 2
! 625: #define LSART_STUB 3
! 626: #define LSART_VLNK 4
! 627:
! 628: #define LSA_RT2_LINKS 0x0000FFFF
! 629:
! 630: #define LSA_SUM2_TOS 0xFF000000
! 631:
! 632: #define LSA_EXT2_TOS 0x7F000000
! 633: #define LSA_EXT2_EBIT 0x80000000
! 634:
! 635: #define LSA_EXT3_EBIT 0x04000000
! 636: #define LSA_EXT3_FBIT 0x02000000
! 637: #define LSA_EXT3_TBIT 0x01000000
! 638:
! 639: /* OSPF Grace LSA (GR) TLVs */
! 640: /* https://www.iana.org/assignments/ospfv2-parameters/ospfv2-parameters.xhtml#ospfv2-parameters-13 */
! 641: #define LSA_GR_PERIOD 1
! 642: #define LSA_GR_REASON 2
! 643: #define LSA_GR_ADDRESS 3
! 644:
! 645: /* OSPF Router Information (RI) TLVs */
! 646: /* https://www.iana.org/assignments/ospf-parameters/ospf-parameters.xhtml#ri-tlv */
! 647: #define LSA_RI_RIC 1
! 648: #define LSA_RI_RFC 2
! 649:
! 650: /* OSPF Router Informational Capability Bits */
! 651: /* https://www.iana.org/assignments/ospf-parameters/ospf-parameters.xhtml#router-informational-capability */
! 652: #define LSA_RIC_GR_CAPABLE 0
! 653: #define LSA_RIC_GR_HELPER 1
! 654: #define LSA_RIC_STUB_ROUTER 2
! 655:
! 656:
! 657: struct ospf_lsa_header
! 658: {
! 659: u16 age; /* LS Age */
! 660: u16 type_raw; /* Type, mixed with options on OSPFv2 */
! 661:
! 662: u32 id;
! 663: u32 rt; /* Advertising router */
! 664: s32 sn; /* LS Sequence number */
! 665: u16 checksum;
! 666: u16 length;
! 667: };
! 668:
! 669:
! 670: /* In OSPFv2, options are embedded in higher half of type_raw */
! 671: static inline u8 lsa_get_options(struct ospf_lsa_header *lsa)
! 672: { return lsa->type_raw >> 8; }
! 673:
! 674: static inline void lsa_set_options(struct ospf_lsa_header *lsa, u16 options)
! 675: { lsa->type_raw = (lsa->type_raw & 0xff) | (options << 8); }
! 676:
! 677:
! 678: struct ospf_lsa_rt
! 679: {
! 680: u32 options; /* VEB flags, mixed with link count for OSPFv2 and options for OSPFv3 */
! 681: };
! 682:
! 683: struct ospf_lsa_rt2_link
! 684: {
! 685: u32 id;
! 686: u32 data;
! 687: #ifdef CPU_BIG_ENDIAN
! 688: u8 type;
! 689: u8 no_tos;
! 690: u16 metric;
! 691: #else
! 692: u16 metric;
! 693: u8 no_tos;
! 694: u8 type;
! 695: #endif
! 696: };
! 697:
! 698: struct ospf_lsa_rt2_tos
! 699: {
! 700: #ifdef CPU_BIG_ENDIAN
! 701: u8 tos;
! 702: u8 padding;
! 703: u16 metric;
! 704: #else
! 705: u16 metric;
! 706: u8 padding;
! 707: u8 tos;
! 708: #endif
! 709: };
! 710:
! 711: struct ospf_lsa_rt3_link
! 712: {
! 713: #ifdef CPU_BIG_ENDIAN
! 714: u8 type;
! 715: u8 padding;
! 716: u16 metric;
! 717: #else
! 718: u16 metric;
! 719: u8 padding;
! 720: u8 type;
! 721: #endif
! 722: u32 lif; /* Local interface ID */
! 723: u32 nif; /* Neighbor interface ID */
! 724: u32 id; /* Neighbor router ID */
! 725: };
! 726:
! 727:
! 728: struct ospf_lsa_net
! 729: {
! 730: u32 optx; /* Netmask for OSPFv2, options for OSPFv3 */
! 731: u32 routers[];
! 732: };
! 733:
! 734: struct ospf_lsa_sum2
! 735: {
! 736: u32 netmask;
! 737: u32 metric;
! 738: };
! 739:
! 740: struct ospf_lsa_sum3_net
! 741: {
! 742: u32 metric;
! 743: u32 prefix[];
! 744: };
! 745:
! 746: struct ospf_lsa_sum3_rt
! 747: {
! 748: u32 options;
! 749: u32 metric;
! 750: u32 drid;
! 751: };
! 752:
! 753: struct ospf_lsa_ext2
! 754: {
! 755: u32 netmask;
! 756: u32 metric;
! 757: u32 fwaddr;
! 758: u32 tag;
! 759: };
! 760:
! 761: struct ospf_lsa_ext3
! 762: {
! 763: u32 metric;
! 764: u32 rest[];
! 765: };
! 766:
! 767: struct ospf_lsa_ext_local
! 768: {
! 769: net_addr net;
! 770: ip_addr fwaddr;
! 771: u32 metric, ebit, fbit, tag, propagate, downwards;
! 772: u8 pxopts;
! 773: };
! 774:
! 775: struct ospf_lsa_link
! 776: {
! 777: u32 options;
! 778: ip6_addr lladdr;
! 779: u32 pxcount;
! 780: u32 rest[];
! 781: };
! 782:
! 783: struct ospf_lsa_prefix
! 784: {
! 785: #ifdef CPU_BIG_ENDIAN
! 786: u16 pxcount;
! 787: u16 ref_type;
! 788: #else
! 789: u16 ref_type;
! 790: u16 pxcount;
! 791: #endif
! 792: u32 ref_id;
! 793: u32 ref_rt;
! 794: u32 rest[];
! 795: };
! 796:
! 797: struct ospf_tlv
! 798: {
! 799: #ifdef CPU_BIG_ENDIAN
! 800: u16 type;
! 801: u16 length;
! 802: #else
! 803: u16 length;
! 804: u16 type;
! 805: #endif
! 806: u32 data[];
! 807: };
! 808:
! 809:
! 810: static inline uint
! 811: lsa_net_count(struct ospf_lsa_header *lsa)
! 812: {
! 813: return (lsa->length - sizeof(struct ospf_lsa_header) - sizeof(struct ospf_lsa_net))
! 814: / sizeof(u32);
! 815: }
! 816:
! 817: /* In ospf_area->rtr we store paths to routers, but we use RID (and not IP address)
! 818: as index, so we need to encapsulate RID to IP address */
! 819:
! 820: #define net_from_rid(x) NET_ADDR_IP4(ip4_from_u32(x), IP4_MAX_PREFIX_LENGTH)
! 821: #define rid_from_net(x) ip4_to_u32(((net_addr_ip4 *) x)->prefix)
! 822:
! 823: #define IPV6_PREFIX_SPACE(x) ((((x) + 63) / 32) * 4)
! 824: #define IPV6_PREFIX_WORDS(x) (((x) + 63) / 32)
! 825:
! 826:
! 827: static inline int
! 828: ospf_valid_prefix(net_addr *n)
! 829: {
! 830: /*
! 831: * In OSPFv2, prefix is stored as netmask; ip4_masklen() returns 255 for
! 832: * invalid one. But OSPFv3-AF may receive IPv4 net with 32 < pxlen < 128.
! 833: */
! 834: uint max = (n->type == NET_IP4) ? IP4_MAX_PREFIX_LENGTH : IP6_MAX_PREFIX_LENGTH;
! 835: return n->pxlen <= max;
! 836: }
! 837:
! 838: /*
! 839: * In OSPFv3-AF (RFC 5835), IPv4 address is encoded by just placing it in the
! 840: * first 32 bits of IPv6 address and setting remaining bits to zero. Likewise
! 841: * for IPv4 prefix, where remaining bits do not matter. We use following
! 842: * functions to convert between IPv4 and IPv4-in-IPv6 representations:
! 843: */
! 844:
! 845: static inline ip4_addr ospf3_6to4(ip6_addr a)
! 846: { return _MI4(_I0(a)); }
! 847:
! 848: static inline ip6_addr ospf3_4to6(ip4_addr a)
! 849: { return _MI6(_I(a), 0, 0, 0); }
! 850:
! 851:
! 852: static inline u32 *
! 853: ospf3_get_prefix(u32 *buf, int af, net_addr *n, u8 *pxopts, u16 *rest)
! 854: {
! 855: ip6_addr px = IP6_NONE;
! 856: uint pxlen = (*buf >> 24);
! 857: *pxopts = (*buf >> 16) & 0xff;
! 858: if (rest) *rest = *buf & 0xffff;
! 859: buf++;
! 860:
! 861: if (pxlen > 0)
! 862: _I0(px) = *buf++;
! 863: if (pxlen > 32)
! 864: _I1(px) = *buf++;
! 865: if (pxlen > 64)
! 866: _I2(px) = *buf++;
! 867: if (pxlen > 96)
! 868: _I3(px) = *buf++;
! 869:
! 870: /* Clean up remaining bits */
! 871: if (pxlen < 128)
! 872: px.addr[pxlen / 32] &= u32_mkmask(pxlen % 32);
! 873:
! 874: if (af == NET_IP4)
! 875: net_fill_ip4(n, ospf3_6to4(px), pxlen);
! 876: else
! 877: net_fill_ip6(n, px, pxlen);
! 878:
! 879: return buf;
! 880: }
! 881:
! 882: static inline u32 *
! 883: ospf3_put_prefix(u32 *buf, net_addr *n, u8 pxopts, u16 rest)
! 884: {
! 885: ip6_addr px = (n->type == NET_IP4) ? ospf3_4to6(net4_prefix(n)) : net6_prefix(n);
! 886: uint pxlen = n->pxlen;
! 887:
! 888: *buf++ = ((pxlen << 24) | (pxopts << 16) | rest);
! 889:
! 890: if (pxlen > 0)
! 891: *buf++ = _I0(px);
! 892: if (pxlen > 32)
! 893: *buf++ = _I1(px);
! 894: if (pxlen > 64)
! 895: *buf++ = _I2(px);
! 896: if (pxlen > 96)
! 897: *buf++ = _I3(px);
! 898:
! 899: return buf;
! 900: }
! 901:
! 902: static inline u32 *
! 903: ospf3_get_addr(u32 *buf, int af, ip_addr *addr)
! 904: {
! 905: ip6_addr a;
! 906: memcpy(&a, buf, 16);
! 907: *addr = (af == NET_IP4) ? ipa_from_ip4(ospf3_6to4(a)) : ipa_from_ip6(a);
! 908: return buf + 4;
! 909: }
! 910:
! 911: static inline u32 *
! 912: ospf3_put_addr(u32 *buf, ip_addr addr)
! 913: {
! 914: ip6_addr a = ipa_is_ip4(addr) ? ospf3_4to6(ipa_to_ip4(addr)) : ipa_to_ip6(addr);
! 915: memcpy(buf, &a, 16);
! 916: return buf + 4;
! 917: }
! 918:
! 919:
! 920: struct ospf_lsreq_header
! 921: {
! 922: u32 type;
! 923: u32 id;
! 924: u32 rt;
! 925: };
! 926:
! 927:
! 928:
! 929: #define SH_ROUTER_SELF 0xffffffff
! 930:
! 931: struct lsadb_show_data {
! 932: struct ospf_proto *proto; /* Protocol to request data from */
! 933: u16 type; /* LSA Type, 0 -> all */
! 934: u16 scope; /* Scope, 0 -> all, hack to handle link scope as 1 */
! 935: u32 area; /* Specified for area scope */
! 936: u32 lsid; /* LSA ID, 0 -> all */
! 937: u32 router; /* Advertising router, 0 -> all */
! 938: };
! 939:
! 940:
! 941: #define EA_OSPF_METRIC1 EA_CODE(PROTOCOL_OSPF, 0)
! 942: #define EA_OSPF_METRIC2 EA_CODE(PROTOCOL_OSPF, 1)
! 943: #define EA_OSPF_TAG EA_CODE(PROTOCOL_OSPF, 2)
! 944: #define EA_OSPF_ROUTER_ID EA_CODE(PROTOCOL_OSPF, 3)
! 945:
! 946:
! 947: /* ospf.c */
! 948: void ospf_schedule_rtcalc(struct ospf_proto *p);
! 949:
! 950: static inline void ospf_notify_rt_lsa(struct ospf_area *oa)
! 951: { oa->update_rt_lsa = 1; }
! 952:
! 953: static inline void ospf_notify_net_lsa(struct ospf_iface *ifa)
! 954: { ifa->update_net_lsa = 1; }
! 955:
! 956: static inline void ospf_notify_link_lsa(struct ospf_iface *ifa)
! 957: { ifa->update_link_lsa = 1; }
! 958:
! 959: static inline int ospf_is_v2(struct ospf_proto *p)
! 960: { return p->ospf2; }
! 961:
! 962: static inline int ospf_is_v3(struct ospf_proto *p)
! 963: { return ! p->ospf2; }
! 964:
! 965: static inline int ospf_get_version(struct ospf_proto *p)
! 966: { return ospf_is_v2(p) ? 2 : 3; }
! 967:
! 968: static inline int ospf_is_ip4(struct ospf_proto *p)
! 969: { return p->p.net_type == NET_IP4; }
! 970:
! 971: static inline int ospf_is_ip6(struct ospf_proto *p)
! 972: { return p->p.net_type == NET_IP6; }
! 973:
! 974: static inline int ospf_get_af(struct ospf_proto *p)
! 975: { return p->p.net_type; }
! 976:
! 977: struct ospf_area *ospf_find_area(struct ospf_proto *p, u32 aid);
! 978:
! 979: static inline struct ospf_area *ospf_main_area(struct ospf_proto *p)
! 980: { return (p->areano == 1) ? HEAD(p->area_list) : p->backbone; }
! 981:
! 982: static inline int oa_is_stub(struct ospf_area *oa)
! 983: { return (oa->options & (OPT_E | OPT_N)) == 0; }
! 984:
! 985: static inline int oa_is_ext(struct ospf_area *oa)
! 986: { return oa->options & OPT_E; }
! 987:
! 988: static inline int oa_is_nssa(struct ospf_area *oa)
! 989: { return oa->options & OPT_N; }
! 990:
! 991: void ospf_stop_gr_recovery(struct ospf_proto *p);
! 992:
! 993: void ospf_sh_neigh(struct proto *P, char *iff);
! 994: void ospf_sh(struct proto *P);
! 995: void ospf_sh_iface(struct proto *P, char *iff);
! 996: void ospf_sh_state(struct proto *P, int verbose, int reachable);
! 997:
! 998: void ospf_sh_lsadb(struct lsadb_show_data *ld);
! 999:
! 1000: /* iface.c */
! 1001: void ospf_iface_chstate(struct ospf_iface *ifa, u8 state);
! 1002: void ospf_iface_sm(struct ospf_iface *ifa, int event);
! 1003: struct ospf_iface *ospf_iface_find(struct ospf_proto *p, struct iface *what);
! 1004: void ospf_if_notify(struct proto *P, uint flags, struct iface *iface);
! 1005: void ospf_ifa_notify2(struct proto *P, uint flags, struct ifa *a);
! 1006: void ospf_ifa_notify3(struct proto *P, uint flags, struct ifa *a);
! 1007: void ospf_iface_info(struct ospf_iface *ifa);
! 1008: void ospf_iface_new(struct ospf_area *oa, struct ifa *addr, struct ospf_iface_patt *ip);
! 1009: void ospf_iface_new_vlink(struct ospf_proto *p, struct ospf_iface_patt *ip);
! 1010: void ospf_iface_remove(struct ospf_iface *ifa);
! 1011: void ospf_iface_shutdown(struct ospf_iface *ifa);
! 1012: int ospf_iface_assure_bufsize(struct ospf_iface *ifa, uint plen);
! 1013: int ospf_iface_reconfigure(struct ospf_iface *ifa, struct ospf_iface_patt *new);
! 1014: void ospf_reconfigure_ifaces(struct ospf_proto *p);
! 1015: void ospf_open_vlink_sk(struct ospf_proto *p);
! 1016: struct nbma_node *find_nbma_node_(list *nnl, ip_addr ip);
! 1017:
! 1018: static inline struct nbma_node * find_nbma_node(struct ospf_iface *ifa, ip_addr ip)
! 1019: { return find_nbma_node_(&ifa->nbma_list, ip); }
! 1020:
! 1021: /* neighbor.c */
! 1022: struct ospf_neighbor *ospf_neighbor_new(struct ospf_iface *ifa);
! 1023: void ospf_neigh_sm(struct ospf_neighbor *n, int event);
! 1024: void ospf_neigh_cancel_graceful_restart(struct ospf_neighbor *n);
! 1025: void ospf_neigh_notify_grace_lsa(struct ospf_neighbor *n, struct top_hash_entry *en);
! 1026: void ospf_neigh_lsadb_changed_(struct ospf_proto *p, struct top_hash_entry *en);
! 1027: void ospf_dr_election(struct ospf_iface *ifa);
! 1028: struct ospf_neighbor *find_neigh(struct ospf_iface *ifa, u32 rid);
! 1029: struct ospf_neighbor *find_neigh_by_ip(struct ospf_iface *ifa, ip_addr ip);
! 1030: void ospf_neigh_update_bfd(struct ospf_neighbor *n, int use_bfd);
! 1031: void ospf_sh_neigh_info(struct ospf_neighbor *n);
! 1032:
! 1033: static inline void ospf_neigh_lsadb_changed(struct ospf_proto *p, struct top_hash_entry *en)
! 1034: { if (p->gr_count) ospf_neigh_lsadb_changed_(p, en); }
! 1035:
! 1036: /* packet.c */
! 1037: void ospf_pkt_fill_hdr(struct ospf_iface *ifa, void *buf, u8 h_type);
! 1038: int ospf_rx_hook(sock * sk, uint size);
! 1039: // void ospf_tx_hook(sock * sk);
! 1040: void ospf_err_hook(sock * sk, int err);
! 1041: void ospf_verr_hook(sock *sk, int err);
! 1042: void ospf_send_to(struct ospf_iface *ifa, ip_addr ip);
! 1043: void ospf_send_to_agt(struct ospf_iface *ifa, u8 state);
! 1044: void ospf_send_to_bdr(struct ospf_iface *ifa);
! 1045:
! 1046: static inline uint ospf_pkt_maxsize(struct ospf_iface *ifa)
! 1047: { return ifa->tx_length - ifa->tx_hdrlen; }
! 1048:
! 1049: static inline void ospf_send_to_all(struct ospf_iface *ifa)
! 1050: { ospf_send_to(ifa, ifa->all_routers); }
! 1051:
! 1052: static inline void ospf_send_to_des(struct ospf_iface *ifa)
! 1053: {
! 1054: if (ipa_nonzero(ifa->des_routers))
! 1055: ospf_send_to(ifa, ifa->des_routers);
! 1056: else
! 1057: ospf_send_to_bdr(ifa);
! 1058: }
! 1059:
! 1060: #ifndef PARSER
! 1061: #define DROP(DSC,VAL) do { err_dsc = DSC; err_val = VAL; goto drop; } while(0)
! 1062: #define DROP1(DSC) do { err_dsc = DSC; goto drop; } while(0)
! 1063: #define SKIP(DSC) do { err_dsc = DSC; goto skip; } while(0)
! 1064: #endif
! 1065:
! 1066: static inline uint ospf_pkt_hdrlen(struct ospf_proto *p)
! 1067: { return ospf_is_v2(p) ? (sizeof(struct ospf_packet) + sizeof(union ospf_auth2)) : sizeof(struct ospf_packet); }
! 1068:
! 1069: static inline void * ospf_tx_buffer(struct ospf_iface *ifa)
! 1070: { return ifa->sk->tbuf; }
! 1071:
! 1072: /* hello.c */
! 1073: #define OHS_HELLO 0
! 1074: #define OHS_POLL 1
! 1075: #define OHS_SHUTDOWN 2
! 1076:
! 1077: void ospf_send_hello(struct ospf_iface *ifa, int kind, struct ospf_neighbor *dirn);
! 1078: void ospf_receive_hello(struct ospf_packet *pkt, struct ospf_iface *ifa, struct ospf_neighbor *n, ip_addr faddr);
! 1079: uint ospf_hello3_options(struct ospf_packet *pkt);
! 1080:
! 1081: /* dbdes.c */
! 1082: void ospf_send_dbdes(struct ospf_proto *p, struct ospf_neighbor *n);
! 1083: void ospf_rxmt_dbdes(struct ospf_proto *p, struct ospf_neighbor *n);
! 1084: void ospf_reset_ldd(struct ospf_proto *p, struct ospf_neighbor *n);
! 1085: void ospf_receive_dbdes(struct ospf_packet *pkt, struct ospf_iface *ifa, struct ospf_neighbor *n);
! 1086: uint ospf_dbdes3_options(struct ospf_packet *pkt);
! 1087:
! 1088: /* lsreq.c */
! 1089: void ospf_send_lsreq(struct ospf_proto *p, struct ospf_neighbor *n);
! 1090: void ospf_receive_lsreq(struct ospf_packet *pkt, struct ospf_iface *ifa, struct ospf_neighbor *n);
! 1091:
! 1092: /* lsupd.c */
! 1093: void ospf_dump_lsahdr(struct ospf_proto *p, struct ospf_lsa_header *lsa_n);
! 1094: void ospf_dump_common(struct ospf_proto *p, struct ospf_packet *pkt);
! 1095: void ospf_lsa_lsrt_down_(struct top_hash_entry *en, struct ospf_neighbor *n, struct top_hash_entry *ret);
! 1096: void ospf_add_flushed_to_lsrt(struct ospf_proto *p, struct ospf_neighbor *n);
! 1097: void ospf_flood_event(void *ptr);
! 1098: int ospf_flood_lsa(struct ospf_proto *p, struct top_hash_entry *en, struct ospf_neighbor *from);
! 1099: int ospf_send_lsupd(struct ospf_proto *p, struct top_hash_entry **lsa_list, uint lsa_count, struct ospf_neighbor *n);
! 1100: void ospf_rxmt_lsupd(struct ospf_proto *p, struct ospf_neighbor *n);
! 1101: void ospf_receive_lsupd(struct ospf_packet *pkt, struct ospf_iface *ifa, struct ospf_neighbor *n);
! 1102:
! 1103: /* lsack.c */
! 1104: void ospf_enqueue_lsack(struct ospf_neighbor *n, struct ospf_lsa_header *h_n, int queue);
! 1105: void ospf_reset_lsack_queue(struct ospf_neighbor *n);
! 1106: void ospf_send_lsack(struct ospf_proto *p, struct ospf_neighbor *n, int queue);
! 1107: void ospf_receive_lsack(struct ospf_packet *pkt, struct ospf_iface *ifa, struct ospf_neighbor *n);
! 1108:
! 1109:
! 1110: #include "proto/ospf/rt.h"
! 1111: #include "proto/ospf/topology.h"
! 1112: #include "proto/ospf/lsalib.h"
! 1113:
! 1114: #endif /* _BIRD_OSPF_H_ */
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