/* * BIRD -- OSPF * * (c) 1999 - 2000 Ondrej Filip <feela@network.cz> * * Can be freely distributed and used under the terms of the GNU GPL. */ /** * DOC: Open Shortest Path First (OSPF) * * The OSPF protocol is quite complicated and its complex implemenation is * split to many files. In |ospf.c|, you will find mainly the interface * for communication with the core (e.g., reconfiguration hooks, shutdown * and initialisation and so on). In |packet.c|, you will find various * functions for sending and receiving generic OSPF packets. There are * also routines for authentication and checksumming. File |iface.c| contains * the interface state machine and functions for allocation and deallocation of OSPF's * interface data structures. Source |neighbor.c| includes the neighbor state * machine and functions for election of Designated Router and Backup * Designated router. In |hello.c|, there are routines for sending * and receiving of hello packets as well as functions for maintaining * wait times and the inactivity timer. Files |lsreq.c|, |lsack.c|, |dbdes.c| * contain functions for sending and receiving of link-state requests, * link-state acknowledgements and database descriptions respectively. * In |lsupd.c|, there are functions for sending and receiving * of link-state updates and also the flooding algorithm. Source |topology.c| is * a place where routines for searching LSAs in the link-state database, * adding and deleting them reside, there also are functions for originating * of various types of LSAs (router LSA, net LSA, external LSA). File |rt.c| * contains routines for calculating the routing table. |lsalib.c| is a set * of various functions for working with the LSAs (endianity conversions, * calculation of checksum etc.). * * One instance of the protocol is able to hold LSA databases for * multiple OSPF areas, to exchange routing information between * multiple neighbors and to calculate the routing tables. The core * structure is &proto_ospf to which multiple &ospf_area and * &ospf_iface structures are connected. &ospf_area is also connected to * &top_hash_graph which is a dynamic hashing structure that * describes the link-state database. It allows fast search, addition * and deletion. Each LSA is kept in two pieces: header and body. Both of them are * kept in the endianity of the CPU. * * Every area has its own area_disp() which is * responsible for late originating of router LSA, calculating * of the routing table and it also ages and flushes the LSAs. This * function is called in regular intervals. * To every &ospf_iface, we connect one or more * &ospf_neighbor's -- a structure containing many timers and queues * for building adjacency and for exchange of routing messages. * * BIRD's OSPF implementation respects RFC2328 in every detail, but * some of internal algorithms do differ. The RFC recommends making a snapshot * of the link-state database when a new adjacency is forming and sending * the database description packets based on the information in this * snapshot. The database can be quite large in some networks, so * rather we walk through a &slist structure which allows us to * continue even if the actual LSA we were working with is deleted. New * LSAs are added at the tail of this &slist. * * We also don't keep a separate OSPF routing table, because the core * helps us by being able to recognize when a route is updated * to an identical one and it suppresses the update automatically. * Due to this, we can flush all the routes we've recalculated and * also those we've deleted to the core's routing table and the * core will take care of the rest. This simplifies the process * and conserves memory. */ #include "ospf.h" static int ospf_start(struct proto *p) { struct proto_ospf *po=(struct proto_ospf *)p; struct ospf_config *c=(struct ospf_config *)(p->cf); struct ospf_area_config *ac; struct ospf_area *oa; struct area_net *anet,*antmp; fib_init(&po->efib,p->pool,sizeof(struct extfib),16,init_efib); init_list(&(po->iface_list)); init_list(&(po->area_list)); po->areano=0; if(EMPTY_LIST(c->area_list)) { log("%s: Cannot start, no OSPF areas configured", p->name); return PS_DOWN; } WALK_LIST(ac,c->area_list) { oa=mb_allocz(po->proto.pool, sizeof(struct ospf_area)); add_tail(&po->area_list, NODE oa); po->areano++; oa->stub=ac->stub; oa->tick=ac->tick; oa->areaid=ac->areaid; oa->gr=ospf_top_new(po); s_init_list(&(oa->lsal)); oa->rt=NULL; oa->po=po; oa->disp_timer=tm_new(po->proto.pool); oa->disp_timer->data=oa; oa->disp_timer->randomize=0; oa->disp_timer->hook=area_disp; oa->disp_timer->recurrent=oa->tick; tm_start(oa->disp_timer,oa->tick); oa->calcrt=0; oa->origrt=0; init_list(&oa->net_list); WALK_LIST(anet,ac->net_list) { antmp=mb_allocz(po->proto.pool, sizeof(struct area_net)); antmp->net=anet->net; antmp->mlen=anet->mlen; antmp->hidden=anet->hidden; add_tail(&oa->net_list, NODE antmp); } fib_init(&oa->infib,po->proto.pool,sizeof(struct infib),16,init_infib); } return PS_UP; } static void ospf_dump(struct proto *p) { char areastr[20]; struct ospf_iface *ifa; struct ospf_neighbor *n; struct ospf_config *c = (void *) p->cf; struct proto_ospf *po=(struct proto_ospf *)p; struct ospf_area *oa; OSPF_TRACE(D_EVENTS, "Area number: %d", po->areano); WALK_LIST(ifa, po->iface_list) { OSPF_TRACE(D_EVENTS, "Interface: %s", ifa->iface->name); OSPF_TRACE(D_EVENTS, "state: %u", ifa->state); OSPF_TRACE(D_EVENTS, "DR: %I", ifa->drid); OSPF_TRACE(D_EVENTS, "BDR: %I", ifa->bdrid); WALK_LIST(n, ifa->neigh_list) { OSPF_TRACE(D_EVENTS, " neighbor %I in state %u", n->rid, n->state); } } WALK_LIST(NODE oa,po->area_list) { OSPF_TRACE(D_EVENTS, "LSA graph dump for area \"%I\" start:", oa->areaid); ospf_top_dump(oa->gr,p); OSPF_TRACE(D_EVENTS, "LSA graph dump for area \"%I\" finished", oa->areaid); } neigh_dump_all(); } static struct proto * ospf_init(struct proto_config *c) { struct proto *p = proto_new(c, sizeof(struct proto_ospf)); struct proto_ospf *po=(struct proto_ospf *)p; struct ospf_config *oc=(struct ospf_config *)c; struct ospf_area_config *ac; struct ospf_iface_patt *patt; p->import_control = ospf_import_control; p->make_tmp_attrs = ospf_make_tmp_attrs; p->store_tmp_attrs = ospf_store_tmp_attrs; p->rt_notify = ospf_rt_notify; p->if_notify = ospf_if_notify; p->rte_better = ospf_rte_better; p->rte_same = ospf_rte_same; po->rfc1583=oc->rfc1583; po->ebit=0; return p; } /* If new is better return 1 */ static int ospf_rte_better(struct rte *new, struct rte *old) { struct proto *p = new->attrs->proto; if(new->u.ospf.metric1==LSINFINITY) return 0; /* External paths are always longer that internal */ if(((new->attrs->source==RTS_OSPF) || (new->attrs->source==RTS_OSPF_IA)) && (old->attrs->source==RTS_OSPF_EXT)) return 1; if(((old->attrs->source==RTS_OSPF) || (old->attrs->source==RTS_OSPF_IA)) && (new->attrs->source==RTS_OSPF_EXT)) return 0; if(new->u.ospf.metric2<old->u.ospf.metric2) { if(old->u.ospf.metric2==LSINFINITY) return 0; /* Old is E1, new is E2 */ return 1; /* Both are E2 */ } if(new->u.ospf.metric2>old->u.ospf.metric2) { if(new->u.ospf.metric2==LSINFINITY) return 1; /* New is E1, old is E2 */ return 0; /* Both are E2 */ } /* * E2 metrics are the same. It means that: * 1) Paths are E2 with same metric * 2) Paths are E1. */ if(new->u.ospf.metric1<old->u.ospf.metric1) return 1; return 0; /* Old is shorter or same */ } static int ospf_rte_same(struct rte *new, struct rte *old) { /* new->attrs == old->attrs always */ return new->u.ospf.metric1 == old->u.ospf.metric1 && new->u.ospf.metric2 == old->u.ospf.metric2 && new->u.ospf.tag == old->u.ospf.tag; } static ea_list * ospf_build_attrs(ea_list *next, struct linpool *pool, u32 m1, u32 m2, u32 tag) { struct ea_list *l = lp_alloc(pool, sizeof(struct ea_list) + 3*sizeof(eattr)); l->next = next; l->flags = EALF_SORTED; l->count = 3; l->attrs[0].id = EA_OSPF_METRIC1; l->attrs[0].flags = 0; l->attrs[0].type = EAF_TYPE_INT | EAF_TEMP; l->attrs[0].u.data = m1; l->attrs[1].id = EA_OSPF_METRIC2; l->attrs[1].flags = 0; l->attrs[1].type = EAF_TYPE_INT | EAF_TEMP; l->attrs[1].u.data = m2; l->attrs[2].id = EA_OSPF_TAG; l->attrs[2].flags = 0; l->attrs[2].type = EAF_TYPE_INT | EAF_TEMP; l->attrs[2].u.data = tag; return l; } void schedule_rt_lsa(struct ospf_area *oa) { struct proto_ospf *po=oa->po; struct proto *p=&po->proto; OSPF_TRACE(D_EVENTS, "Scheduling RT lsa origination for area %I.", oa->areaid); oa->origrt=1; } void schedule_rtcalc(struct ospf_area *oa) { struct proto_ospf *po=oa->po; struct proto *p=&po->proto; OSPF_TRACE(D_EVENTS, "Scheduling RT calculation for area %I.", oa->areaid); oa->calcrt=1; } /** * area_disp - invokes link-state database aging, origination of * router LSA and routing table calculation * @timer: it's called every @ospf_area->tick seconds * * It invokes aging and when @ospf_area->origrt is set to 1, start * function for origination of router LSA and network LSAs. * It also starts routing * table calculation when @ospf_area->calcrt is set. */ void area_disp(timer *timer) { struct ospf_area *oa=timer->data; struct top_hash_entry *en,*nxt; struct proto_ospf *po=oa->po; struct ospf_iface *ifa; /* Now try to originage rt_lsa */ if(oa->origrt) originate_rt_lsa(oa); /* Now try to originate network LSA's */ WALK_LIST(ifa, po->iface_list) { if(ifa->orignet&&(ifa->an==oa->areaid)) originate_net_lsa(ifa); } /* Age LSA DB */ ospf_age(oa); /* Calculate routing table */ if(oa->calcrt) ospf_rt_spfa(oa); oa->calcrt=0; } /** * ospf_import_control - accept or reject new route from nest's routing table * @p: current instance of protocol * @new: the new route * @attrs: list of attributes * @pool: pool for allocation of attributes * * Its quite simple. It does not accept our own routes and leaves the decision on * import to the filters. */ int ospf_import_control(struct proto *p, rte **new, ea_list **attrs, struct linpool *pool) { rte *e=*new; struct proto_ospf *po=(struct proto_ospf *)p; if(p==e->attrs->proto) return -1; /* Reject our own routes */ *attrs = ospf_build_attrs(*attrs, pool, LSINFINITY, 10000, 0); return 0; /* Leave decision to the filters */ } struct ea_list * ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool) { return ospf_build_attrs(NULL, pool, rt->u.ospf.metric1, rt->u.ospf.metric2, rt->u.ospf.tag); } void ospf_store_tmp_attrs(struct rte *rt, struct ea_list *attrs) { rt->u.ospf.metric1 = ea_get_int(attrs, EA_OSPF_METRIC1, LSINFINITY); rt->u.ospf.metric2 = ea_get_int(attrs, EA_OSPF_METRIC2, 10000); rt->u.ospf.tag = ea_get_int(attrs, EA_OSPF_TAG, 0); } /** * ospf_shutdown - Finish of OSPF instance * @p: current instance of protocol * * RFC does not define any action that should be taken before router * shutdown. To make my neighbors react as fast as possible, I send * them hello packet with empty neighbor list. They should start * their neighbor state machine with event %NEIGHBOR_1WAY. */ static int ospf_shutdown(struct proto *p) { struct proto_ospf *po=(struct proto_ospf *)p; struct ospf_iface *ifa; struct ospf_neighbor *n; struct ospf_area *oa; OSPF_TRACE(D_EVENTS, "Shutdown requested"); /* And send to all my neighbors 1WAY */ WALK_LIST(ifa, po->iface_list) { init_list(&ifa->neigh_list); hello_timer_hook(ifa->hello_timer); } return PS_DOWN; } void ospf_rt_notify(struct proto *p, net *n, rte *new, rte *old, ea_list *attrs) { struct proto_ospf *po=(struct proto_ospf *)p; /* Temporarily down write anything OSPF_TRACE(D_EVENTS, "Got route %I/%d %s", p->name, n->n.prefix, n->n.pxlen, new ? "up" : "down"); */ if(new) /* Got some new route */ { originate_ext_lsa(n, new, po, attrs); } else { u32 rtid=po->proto.cf->global->router_id; struct ospf_area *oa; struct top_hash_entry *en; u32 pr=ipa_to_u32(n->n.prefix); struct ospf_lsa_ext *ext; int i; /* Flush old external LSA */ WALK_LIST(oa, po->area_list) { for(i=0;i<MAXNETS;i++,pr++) { if(en=ospf_hash_find(oa->gr, pr, rtid, LSA_T_EXT)) { ext=en->lsa_body; if(ipa_compare(ext->netmask, ipa_mkmask(n->n.pxlen))==0) { net_flush_lsa(en,po,oa); break; } } } } } } static void ospf_get_status(struct proto *p, byte *buf) { struct proto_ospf *po=(struct proto_ospf *)p; if (p->proto_state == PS_DOWN) buf[0] = 0; else { struct ospf_iface *ifa; struct ospf_neighbor *n; int adj=0; WALK_LIST(ifa,po->iface_list) WALK_LIST(n,ifa->neigh_list) if(n->state==NEIGHBOR_FULL) adj=1; if(adj==0) strcpy(buf, "Alone"); else strcpy(buf, "Running"); } } static void ospf_get_route_info(rte *rte, byte *buf, ea_list *attrs) { char met=' '; char type=' '; if(rte->attrs->source==RTS_OSPF_EXT) { met='1'; type='E'; } if(rte->u.ospf.metric2!=LSINFINITY) met='2'; if(rte->attrs->source==RTS_OSPF_IA) type='A'; if(rte->attrs->source==RTS_OSPF) type='I'; buf += bsprintf(buf, " %c", type); if(met!=' ') buf += bsprintf(buf, "%c", met); buf += bsprintf(buf, " (%d/%d", rte->pref, rte->u.ospf.metric1); if(rte->u.ospf.metric2!=LSINFINITY) buf += bsprintf(buf, "/%d", rte->u.ospf.metric2); buf += bsprintf(buf, ")"); if(rte->attrs->source==RTS_OSPF_EXT && rte->u.ospf.tag) { buf += bsprintf(buf, " [%x]", rte->u.ospf.tag); } } static int ospf_get_attr(eattr *a, byte *buf) { switch (a->id) { case EA_OSPF_METRIC1: bsprintf(buf, "metric1"); return GA_NAME; case EA_OSPF_METRIC2: bsprintf(buf, "metric2"); return GA_NAME; case EA_OSPF_TAG: bsprintf(buf, "tag: %08x", a->u.data); return GA_FULL; default: return GA_UNKNOWN; } } static int ospf_patt_compare(struct ospf_iface_patt *a, struct ospf_iface_patt *b) { return ((a->type==b->type)&&(a->priority==b->priority)); } /** * ospf_reconfigure - reconfiguration hook * @p: current instance of protocol (with old configuration) * @c: new configuration requested by user * * This hook tries to be a little bit intelligent. Instance of OSPF * will survive change of many constants like hello interval, * password change, addition or deletion of some neighbor on * nonbroadcast network, cost of interface, etc. */ static int ospf_reconfigure(struct proto *p, struct proto_config *c) { struct ospf_config *old=(struct ospf_config *)(p->cf); struct ospf_config *new=(struct ospf_config *)c; struct ospf_area_config *ac1,*ac2; struct proto_ospf *po=( struct proto_ospf *)p; struct ospf_iface_patt *ip1,*ip2; struct ospf_iface *ifa; struct nbma_node *nb1,*nb2,*nbnx; struct ospf_area *oa=NULL; struct area_net *anet,*antmp; int found; po->rfc1583=new->rfc1583; WALK_LIST(oa, po->area_list) /* Routing table must be recalculated */ { schedule_rtcalc(oa); } ac1=HEAD(old->area_list); ac2=HEAD(new->area_list); /* I should get it in same order */ while(((NODE (ac1))->next!=NULL) && ((NODE (ac2))->next!=NULL)) { if(ac1->areaid!=ac2->areaid) return 0; if(ac1->stub!=ac2->stub) return 0; /* FIXME: non zero values can change */ WALK_LIST(oa,po->area_list) if(oa->areaid==ac2->areaid) break; if(!oa) return 0; if(ac1->tick!=ac2->tick) { if(oa->areaid==ac2->areaid) { oa->tick=ac2->tick; tm_start(oa->disp_timer,oa->tick); OSPF_TRACE(D_EVENTS, "Changing tick interval on area %I from %d to %d", oa->areaid, ac1->tick, ac2->tick); break; } } /* Change net_list */ WALK_LIST_DELSAFE(anet, antmp, oa->net_list) { rem_node(NODE anet); mb_free(anet); } WALK_LIST(anet, ac2->net_list) { antmp=mb_alloc(p->pool, sizeof(struct area_net)); antmp->net=anet->net; antmp->mlen=anet->mlen; antmp->hidden=anet->hidden; add_tail(&oa->net_list, NODE antmp); } if(!iface_patts_equal(&ac1->patt_list, &ac2->patt_list, (void *) ospf_patt_compare)) return 0; WALK_LIST(ifa, po->iface_list) { if(ip1=(struct ospf_iface_patt *) iface_patt_match(&ac1->patt_list, ifa->iface)) { /* Now reconfigure interface */ if(!(ip2=(struct ospf_iface_patt *) iface_patt_match(&ac2->patt_list, ifa->iface))) return 0; /* HELLO TIMER */ if(ip1->helloint!=ip2->helloint) { ifa->helloint=ip2->helloint; ifa->hello_timer->recurrent=ifa->helloint; tm_start(ifa->hello_timer,ifa->helloint); OSPF_TRACE(D_EVENTS, "Changing hello interval on interface %s from %d to %d", ifa->iface->name,ip1->helloint,ip2->helloint); } /* POLL TIMER */ if(ip1->pollint!=ip2->pollint) { ifa->pollint=ip2->helloint; ifa->poll_timer->recurrent=ifa->pollint; tm_start(ifa->poll_timer,ifa->pollint); OSPF_TRACE(D_EVENTS, "Changing poll interval on interface %s from %d to %d", ifa->iface->name,ip1->pollint,ip2->pollint); } /* COST */ if(ip1->cost!=ip2->cost) { ifa->cost=ip2->cost; OSPF_TRACE(D_EVENTS, "Changing cost interface %s from %d to %d", ifa->iface->name,ip1->cost,ip2->cost); schedule_rt_lsa(ifa->oa); } /* strict nbma */ if((ip1->strictnbma==0)&&(ip2->strictnbma!=0)) { ifa->strictnbma=ip2->strictnbma; OSPF_TRACE(D_EVENTS, "Interface %s is now strict NBMA.", ifa->iface->name); } if((ip1->strictnbma!=0)&&(ip2->strictnbma==0)) { ifa->strictnbma=ip2->strictnbma; OSPF_TRACE(D_EVENTS, "Interface %s is no longer strict NBMA.", ifa->iface->name); } /* stub */ if((ip1->stub==0)&&(ip2->stub!=0)) { ifa->stub=ip2->stub; OSPF_TRACE(D_EVENTS, "Interface %s is now stub.", ifa->iface->name); } if((ip1->stub!=0)&&(ip2->stub==0)&& ((ifa->ioprob & OSPF_I_IP)==0)&& (((ifa->ioprob & OSPF_I_MC)==0)|| (ifa->type==OSPF_IT_NBMA))) { ifa->stub=ip2->stub; OSPF_TRACE(D_EVENTS, "Interface %s is no longer stub.", ifa->iface->name); } /* AUTHENTICATION */ if(ip1->autype!=ip2->autype) { ifa->autype=ip2->autype; OSPF_TRACE(D_EVENTS, "Changing authentication type on interface %s", ifa->iface->name); } if(strncmp(ip1->password,ip2->password,8)!=0) { memcpy(ifa->aukey,ip2->password,8); OSPF_TRACE(D_EVENTS, "Changing password on interface %s", ifa->iface->name); } /* RXMT */ if(ip1->rxmtint!=ip2->rxmtint) { ifa->rxmtint=ip2->rxmtint; OSPF_TRACE(D_EVENTS, "Changing retransmit interval on interface %s from %d to %d", ifa->iface->name,ip1->rxmtint,ip2->rxmtint); } /* WAIT */ if(ip1->waitint!=ip2->waitint) { ifa->waitint=ip2->waitint; if(ifa->wait_timer->expires!=0) tm_start(ifa->wait_timer,ifa->waitint); OSPF_TRACE(D_EVENTS, "Changing wait interval on interface %s from %d to %d", ifa->iface->name,ip1->waitint,ip2->waitint); } /* INFTRANS */ if(ip1->inftransdelay!=ip2->inftransdelay) { ifa->inftransdelay=ip2->inftransdelay; OSPF_TRACE(D_EVENTS, "Changing transmit delay on interface %s from %d to %d", ifa->iface->name,ip1->inftransdelay,ip2->inftransdelay); } /* DEAD COUNT */ if(ip1->deadc!=ip2->deadc) { ifa->deadc=ip2->deadc; OSPF_TRACE(D_EVENTS, "Changing dead count on interface %s from %d to %d", ifa->iface->name,ip1->deadc,ip2->deadc); } /* NBMA LIST */ /* First remove old */ WALK_LIST_DELSAFE(nb1, nbnx, ifa->nbma_list) { found=0; WALK_LIST(nb2, ip2->nbma_list) if(ipa_compare(nb1->ip,nb2->ip)==0) { found=1; if(nb1->eligible!=nb2->eligible) OSPF_TRACE(D_EVENTS, "Changing neighbor eligibility %I on interface %s", nb1->ip,ifa->iface->name); break; } if(!found) { OSPF_TRACE(D_EVENTS, "Removing NBMA neighbor %I on interface %s", nb1->ip,ifa->iface->name); rem_node(NODE nb1); mb_free(nb1); } } /* And then add new */ WALK_LIST(nb2, ip2->nbma_list) { found=0; WALK_LIST(nb1, ifa->nbma_list) if(ipa_compare(nb1->ip,nb2->ip)==0) { found=1; break; } if(!found) { nb1=mb_alloc(p->pool,sizeof(struct nbma_node)); nb1->ip=nb2->ip; nb1->eligible=nb2->eligible; add_tail(&ifa->nbma_list, NODE nb1); OSPF_TRACE(D_EVENTS, "Adding NBMA neighbor %I on interface %s", nb1->ip,ifa->iface->name); } } } } NODE ac1=(NODE (ac1))->next; NODE ac2=(NODE (ac2))->next; } if(((NODE (ac1))->next)!=((NODE (ac2))->next)) return 0; /* One is not null */ return 1; /* Everything OK :-) */ } void ospf_sh_neigh(struct proto *p, char *iff) { struct ospf_iface *ifa=NULL,*f; struct ospf_neighbor *n; struct proto_ospf *po=(struct proto_ospf *)p; if(p->proto_state != PS_UP) { cli_msg(-1013,"%s: is not up", p->name); cli_msg(0,""); return; } if(iff!=NULL) { WALK_LIST(f, po->iface_list) { if(strcmp(iff,f->iface->name)==0) { ifa=f; break; } } if(ifa==NULL) { cli_msg(0,""); return; } cli_msg(-1013,"%s:", p->name); cli_msg(-1013,"%-12s\t%3s\t%-15s\t%-5s\t%-12s\t%-10s","Router ID","Pri", " State", "DTime", "Router IP", "Interface"); WALK_LIST(n, ifa->neigh_list) ospf_sh_neigh_info(n); cli_msg(0,""); return; } cli_msg(-1013,"%s:", p->name); cli_msg(-1013,"%-12s\t%3s\t%-15s\t%-5s\t%-12s\t%-10s","Router ID","Pri", " State", "DTime", "Router IP", "Interface"); WALK_LIST(ifa,po->iface_list) WALK_LIST(n, ifa->neigh_list) ospf_sh_neigh_info(n); cli_msg(0,""); } void ospf_sh(struct proto *p) { struct ospf_area *oa; struct proto_ospf *po=(struct proto_ospf *)p; struct ospf_iface *ifa; struct ospf_neighbor *n; int ifano; int nno; int adjno; if(p->proto_state != PS_UP) { cli_msg(-1014,"%s: is not up", p->name); cli_msg(0,""); return; } cli_msg(-1014,"%s:", p->name); cli_msg(-1014,"Number of areas: %u", po->areano); WALK_LIST(oa,po->area_list) { cli_msg(-1014,"\tArea: %I (%u) %s", oa->areaid, oa->areaid, oa->areaid==0 ? "[BACKBONE]" : ""); ifano=0; nno=0; adjno=0; WALK_LIST(ifa, po->iface_list) { if(oa==ifa->oa) ifano++; WALK_LIST(n, ifa->neigh_list) { nno++; if(n->state==NEIGHBOR_FULL) adjno++; } } cli_msg(-1014,"\t\tStub:\t%s", oa->stub ? "Yes" : "No"); cli_msg(-1014,"\t\tRT scheduler tick:\t%u", oa->tick); cli_msg(-1014,"\t\tNumber of interfaces:\t%u", ifano); cli_msg(-1014,"\t\tNumber of LSAs in DB:\t%u", oa->gr->hash_entries); cli_msg(-1014,"\t\tNumber of neighbors:\t%u", nno); cli_msg(-1014,"\t\tNumber of adjacent neighbors:\t%u", adjno); if(!EMPTY_LIST(oa->net_list)) { struct area_net *anet; cli_msg(-1014,"\t\tArea networks:"); WALK_LIST(anet, oa->net_list) { cli_msg(-1014,"\t\t\t%1I/%u\t%s", anet->net, anet->mlen, anet->hidden ? "Hidden" : "Advertise"); } } } cli_msg(0,""); } void ospf_sh_iface(struct proto *p, char *iff) { struct ospf_area *oa; struct proto_ospf *po=(struct proto_ospf *)p; struct ospf_iface *ifa=NULL,*f; struct ospf_neighbor *n; int ifano; int nno; int adjno; if(p->proto_state != PS_UP) { cli_msg(-1015,"%s: is not up", p->name); cli_msg(0,""); return; } if(iff!=NULL) { WALK_LIST(f, po->iface_list) { if(strcmp(iff,f->iface->name)==0) { ifa=f; break; } } if(ifa==NULL) { cli_msg(0,""); return; } cli_msg(-1015,"%s:", p->name); ospf_iface_info(ifa); cli_msg(0,""); return; } cli_msg(-1015,"%s:", p->name); WALK_LIST(ifa, po->iface_list) ospf_iface_info(ifa); cli_msg(0,""); } struct protocol proto_ospf = { name: "OSPF", template: "ospf%d", attr_class: EAP_OSPF, init: ospf_init, dump: ospf_dump, start: ospf_start, shutdown: ospf_shutdown, get_route_info: ospf_get_route_info, get_attr: ospf_get_attr, get_status: ospf_get_status, reconfigure: ospf_reconfigure };