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d83faf8dc4
redundant anyway.)
910 lines
24 KiB
C
910 lines
24 KiB
C
/*
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* BIRD -- OSPF
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*
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* (c) 1999 - 2000 Ondrej Filip <feela@network.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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/**
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* DOC: Open Shortest Path First (OSPF)
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*
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* The OSPF protocol is quite complicated and its complex implemenation is
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* split to many files. In |ospf.c|, you will find mainly the interface
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* for communication with the core (e.g., reconfiguration hooks, shutdown
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* and initialisation and so on). In |packet.c|, you will find various
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* functions for sending and receiving generic OSPF packets. There are
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* also routines for authentication and checksumming. File |iface.c| contains
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* the interface state machine and functions for allocation and deallocation of OSPF's
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* interface data structures. Source |neighbor.c| includes the neighbor state
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* machine and functions for election of Designated Router and Backup
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* Designated router. In |hello.c|, there are routines for sending
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* and receiving of hello packets as well as functions for maintaining
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* wait times and the inactivity timer. Files |lsreq.c|, |lsack.c|, |dbdes.c|
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* contain functions for sending and receiving of link-state requests,
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* link-state acknowledgements and database descriptions respectively.
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* In |lsupd.c|, there are functions for sending and receiving
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* of link-state updates and also the flooding algorithm. Source |topology.c| is
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* a place where routines for searching LSAs in the link-state database,
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* adding and deleting them reside, there also are functions for originating
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* of various types of LSAs (router LSA, net LSA, external LSA). File |rt.c|
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* contains routines for calculating the routing table. |lsalib.c| is a set
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* of various functions for working with the LSAs (endianity conversions,
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* calculation of checksum etc.).
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*
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* One instance of the protocol is able to hold LSA databases for
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* multiple OSPF areas, to exchange routing information between
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* multiple neighbors and to calculate the routing tables. The core
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* structure is &proto_ospf to which multiple &ospf_area and
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* &ospf_iface structures are connected. &ospf_area is also connected to
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* &top_hash_graph which is a dynamic hashing structure that
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* describes the link-state database. It allows fast search, addition
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* and deletion. Each LSA is kept in two pieces: header and body. Both of them are
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* kept in the endianity of the CPU.
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*
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* Every area has its own area_disp() which is
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* responsible for late originating of router LSA, calculating
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* of the routing table and it also ages and flushes the LSAs. This
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* function is called in regular intervals.
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* To every &ospf_iface, we connect one or more
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* &ospf_neighbor's -- a structure containing many timers and queues
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* for building adjacency and for exchange of routing messages.
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*
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* BIRD's OSPF implementation respects RFC2328 in every detail, but
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* some of internal algorithms do differ. The RFC recommends making a snapshot
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* of the link-state database when a new adjacency is forming and sending
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* the database description packets based on the information in this
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* snapshot. The database can be quite large in some networks, so
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* rather we walk through a &slist structure which allows us to
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* continue even if the actual LSA we were working with is deleted. New
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* LSAs are added at the tail of this &slist.
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*
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* We also don't keep a separate OSPF routing table, because the core
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* helps us by being able to recognize when a route is updated
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* to an identical one and it suppresses the update automatically.
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* Due to this, we can flush all the routes we've recalculated and
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* also those we've deleted to the core's routing table and the
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* core will take care of the rest. This simplifies the process
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* and conserves memory.
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*/
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#include "ospf.h"
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static int ospf_rte_better(struct rte *new, struct rte *old);
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static int ospf_rte_same(struct rte *new, struct rte *old);
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static int
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ospf_start(struct proto *p)
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{
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struct proto_ospf *po=(struct proto_ospf *)p;
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struct ospf_config *c=(struct ospf_config *)(p->cf);
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struct ospf_area_config *ac;
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struct ospf_area *oa;
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struct area_net *anet,*antmp;
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fib_init(&po->efib,p->pool,sizeof(struct extfib),16,init_efib);
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init_list(&(po->iface_list));
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init_list(&(po->area_list));
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po->areano=0;
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if(EMPTY_LIST(c->area_list))
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{
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log("%s: Cannot start, no OSPF areas configured", p->name);
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return PS_DOWN;
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}
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WALK_LIST(ac,c->area_list)
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{
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oa=mb_allocz(po->proto.pool, sizeof(struct ospf_area));
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add_tail(&po->area_list, NODE oa);
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po->areano++;
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oa->stub=ac->stub;
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oa->tick=ac->tick;
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oa->areaid=ac->areaid;
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oa->gr=ospf_top_new(po);
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s_init_list(&(oa->lsal));
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oa->rt=NULL;
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oa->po=po;
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oa->disp_timer=tm_new(po->proto.pool);
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oa->disp_timer->data=oa;
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oa->disp_timer->randomize=0;
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oa->disp_timer->hook=area_disp;
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oa->disp_timer->recurrent=oa->tick;
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tm_start(oa->disp_timer,oa->tick);
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oa->calcrt=0;
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oa->origrt=0;
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init_list(&oa->net_list);
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WALK_LIST(anet,ac->net_list)
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{
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antmp=mb_allocz(po->proto.pool, sizeof(struct area_net));
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antmp->net=anet->net;
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antmp->mlen=anet->mlen;
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antmp->hidden=anet->hidden;
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add_tail(&oa->net_list, NODE antmp);
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}
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fib_init(&oa->infib,po->proto.pool,sizeof(struct infib),16,init_infib);
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}
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return PS_UP;
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}
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static void
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ospf_dump(struct proto *p)
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{
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char areastr[20];
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struct ospf_iface *ifa;
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struct ospf_neighbor *n;
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struct ospf_config *c = (void *) p->cf;
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struct proto_ospf *po=(struct proto_ospf *)p;
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struct ospf_area *oa;
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OSPF_TRACE(D_EVENTS, "Area number: %d", po->areano);
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WALK_LIST(ifa, po->iface_list)
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{
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OSPF_TRACE(D_EVENTS, "Interface: %s", ifa->iface->name);
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OSPF_TRACE(D_EVENTS, "state: %u", ifa->state);
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OSPF_TRACE(D_EVENTS, "DR: %I", ifa->drid);
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OSPF_TRACE(D_EVENTS, "BDR: %I", ifa->bdrid);
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WALK_LIST(n, ifa->neigh_list)
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{
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OSPF_TRACE(D_EVENTS, " neighbor %I in state %u", n->rid, n->state);
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}
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}
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WALK_LIST(NODE oa,po->area_list)
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{
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OSPF_TRACE(D_EVENTS, "LSA graph dump for area \"%I\" start:", oa->areaid);
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ospf_top_dump(oa->gr,p);
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OSPF_TRACE(D_EVENTS, "LSA graph dump for area \"%I\" finished", oa->areaid);
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}
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neigh_dump_all();
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}
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static struct proto *
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ospf_init(struct proto_config *c)
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{
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struct proto *p = proto_new(c, sizeof(struct proto_ospf));
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struct proto_ospf *po=(struct proto_ospf *)p;
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struct ospf_config *oc=(struct ospf_config *)c;
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struct ospf_area_config *ac;
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struct ospf_iface_patt *patt;
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p->import_control = ospf_import_control;
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p->make_tmp_attrs = ospf_make_tmp_attrs;
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p->store_tmp_attrs = ospf_store_tmp_attrs;
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p->rt_notify = ospf_rt_notify;
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p->if_notify = ospf_if_notify;
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p->rte_better = ospf_rte_better;
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p->rte_same = ospf_rte_same;
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po->rfc1583=oc->rfc1583;
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po->ebit=0;
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return p;
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}
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/* If new is better return 1 */
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static int
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ospf_rte_better(struct rte *new, struct rte *old)
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{
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struct proto *p = new->attrs->proto;
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if(new->u.ospf.metric1==LSINFINITY) return 0;
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/* External paths are always longer that internal */
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if(((new->attrs->source==RTS_OSPF) || (new->attrs->source==RTS_OSPF_IA))
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&& (old->attrs->source==RTS_OSPF_EXT)) return 1;
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if(((old->attrs->source==RTS_OSPF) || (old->attrs->source==RTS_OSPF_IA))
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&& (new->attrs->source==RTS_OSPF_EXT)) return 0;
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if(new->u.ospf.metric2<old->u.ospf.metric2)
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{
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if(old->u.ospf.metric2==LSINFINITY) return 0; /* Old is E1, new is E2 */
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return 1; /* Both are E2 */
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}
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if(new->u.ospf.metric2>old->u.ospf.metric2)
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{
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if(new->u.ospf.metric2==LSINFINITY) return 1; /* New is E1, old is E2 */
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return 0; /* Both are E2 */
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}
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/*
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* E2 metrics are the same. It means that:
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* 1) Paths are E2 with same metric
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* 2) Paths are E1.
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*/
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if(new->u.ospf.metric1<old->u.ospf.metric1) return 1;
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return 0; /* Old is shorter or same */
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}
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static int
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ospf_rte_same(struct rte *new, struct rte *old)
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{
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/* new->attrs == old->attrs always */
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return
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new->u.ospf.metric1 == old->u.ospf.metric1 &&
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new->u.ospf.metric2 == old->u.ospf.metric2 &&
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new->u.ospf.tag == old->u.ospf.tag;
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}
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static ea_list *
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ospf_build_attrs(ea_list *next, struct linpool *pool, u32 m1, u32 m2, u32 tag)
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{
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struct ea_list *l = lp_alloc(pool, sizeof(struct ea_list) + 3*sizeof(eattr));
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l->next = next;
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l->flags = EALF_SORTED;
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l->count = 3;
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l->attrs[0].id = EA_OSPF_METRIC1;
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l->attrs[0].flags = 0;
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l->attrs[0].type = EAF_TYPE_INT | EAF_TEMP;
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l->attrs[0].u.data = m1;
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l->attrs[1].id = EA_OSPF_METRIC2;
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l->attrs[1].flags = 0;
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l->attrs[1].type = EAF_TYPE_INT | EAF_TEMP;
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l->attrs[1].u.data = m2;
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l->attrs[2].id = EA_OSPF_TAG;
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l->attrs[2].flags = 0;
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l->attrs[2].type = EAF_TYPE_INT | EAF_TEMP;
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l->attrs[2].u.data = tag;
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return l;
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}
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void
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schedule_rt_lsa(struct ospf_area *oa)
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{
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struct proto_ospf *po=oa->po;
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struct proto *p=&po->proto;
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OSPF_TRACE(D_EVENTS, "Scheduling RT lsa origination for area %I.",
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oa->areaid);
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oa->origrt=1;
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}
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void
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schedule_rtcalc(struct ospf_area *oa)
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{
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struct proto_ospf *po=oa->po;
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struct proto *p=&po->proto;
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OSPF_TRACE(D_EVENTS, "Scheduling RT calculation for area %I.",
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oa->areaid);
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oa->calcrt=1;
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}
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/**
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* area_disp - invokes link-state database aging, origination of
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* router LSA and routing table calculation
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* @timer: it's called every @ospf_area->tick seconds
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*
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* It invokes aging and when @ospf_area->origrt is set to 1, start
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* function for origination of router LSA and network LSAs.
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* It also starts routing
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* table calculation when @ospf_area->calcrt is set.
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*/
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void
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area_disp(timer *timer)
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{
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struct ospf_area *oa=timer->data;
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struct top_hash_entry *en,*nxt;
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struct proto_ospf *po=oa->po;
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struct ospf_iface *ifa;
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/* Now try to originage rt_lsa */
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if(oa->origrt) originate_rt_lsa(oa);
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/* Now try to originate network LSA's */
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WALK_LIST(ifa, po->iface_list)
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{
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if(ifa->orignet&&(ifa->an==oa->areaid)) originate_net_lsa(ifa);
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}
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/* Age LSA DB */
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ospf_age(oa);
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/* Calculate routing table */
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if(oa->calcrt) ospf_rt_spfa(oa);
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oa->calcrt=0;
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}
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/**
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* ospf_import_control - accept or reject new route from nest's routing table
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* @p: current instance of protocol
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* @new: the new route
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* @attrs: list of attributes
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* @pool: pool for allocation of attributes
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*
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* Its quite simple. It does not accept our own routes and leaves the decision on
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* import to the filters.
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*/
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int
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ospf_import_control(struct proto *p, rte **new, ea_list **attrs, struct linpool *pool)
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{
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rte *e=*new;
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struct proto_ospf *po=(struct proto_ospf *)p;
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if(p==e->attrs->proto) return -1; /* Reject our own routes */
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*attrs = ospf_build_attrs(*attrs, pool, LSINFINITY, 10000, 0);
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return 0; /* Leave decision to the filters */
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}
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struct ea_list *
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ospf_make_tmp_attrs(struct rte *rt, struct linpool *pool)
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{
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return ospf_build_attrs(NULL, pool, rt->u.ospf.metric1, rt->u.ospf.metric2, rt->u.ospf.tag);
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}
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void
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ospf_store_tmp_attrs(struct rte *rt, struct ea_list *attrs)
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{
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rt->u.ospf.metric1 = ea_get_int(attrs, EA_OSPF_METRIC1, LSINFINITY);
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rt->u.ospf.metric2 = ea_get_int(attrs, EA_OSPF_METRIC2, 10000);
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rt->u.ospf.tag = ea_get_int(attrs, EA_OSPF_TAG, 0);
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}
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/**
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* ospf_shutdown - Finish of OSPF instance
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* @p: current instance of protocol
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*
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* RFC does not define any action that should be taken before router
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* shutdown. To make my neighbors react as fast as possible, I send
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* them hello packet with empty neighbor list. They should start
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* their neighbor state machine with event %NEIGHBOR_1WAY.
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*/
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static int
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ospf_shutdown(struct proto *p)
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{
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struct proto_ospf *po=(struct proto_ospf *)p;
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struct ospf_iface *ifa;
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struct ospf_neighbor *n;
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struct ospf_area *oa;
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OSPF_TRACE(D_EVENTS, "Shutdown requested");
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/* And send to all my neighbors 1WAY */
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WALK_LIST(ifa, po->iface_list)
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{
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init_list(&ifa->neigh_list);
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hello_timer_hook(ifa->hello_timer);
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}
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return PS_DOWN;
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}
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void
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ospf_rt_notify(struct proto *p, net *n, rte *new, rte *old, ea_list *attrs)
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{
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struct proto_ospf *po=(struct proto_ospf *)p;
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/* Temporarily down write anything
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OSPF_TRACE(D_EVENTS, "Got route %I/%d %s", p->name, n->n.prefix,
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n->n.pxlen, new ? "up" : "down");
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*/
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if(new) /* Got some new route */
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{
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originate_ext_lsa(n, new, po, attrs);
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}
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else
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{
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u32 rtid=po->proto.cf->global->router_id;
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struct ospf_area *oa;
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struct top_hash_entry *en;
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u32 pr=ipa_to_u32(n->n.prefix);
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struct ospf_lsa_ext *ext;
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int i;
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int max=max_ext_lsa(n->n.pxlen);
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/* Flush old external LSA */
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WALK_LIST(oa, po->area_list)
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{
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for(i=0;i<max;i++,pr++)
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{
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if(en=ospf_hash_find(oa->gr, pr, rtid, LSA_T_EXT))
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{
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ext=en->lsa_body;
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if(ipa_compare(ext->netmask, ipa_mkmask(n->n.pxlen))==0)
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{
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net_flush_lsa(en,po,oa);
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break;
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}
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}
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}
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}
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}
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}
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static void
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ospf_get_status(struct proto *p, byte *buf)
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{
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struct proto_ospf *po=(struct proto_ospf *)p;
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if (p->proto_state == PS_DOWN) buf[0] = 0;
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else
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{
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struct ospf_iface *ifa;
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struct ospf_neighbor *n;
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int adj=0;
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WALK_LIST(ifa,po->iface_list)
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WALK_LIST(n,ifa->neigh_list)
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if(n->state==NEIGHBOR_FULL) adj=1;
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if(adj==0) strcpy(buf, "Alone");
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else strcpy(buf, "Running");
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}
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}
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static void
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ospf_get_route_info(rte *rte, byte *buf, ea_list *attrs)
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{
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char met=' ';
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char type=' ';
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if(rte->attrs->source==RTS_OSPF_EXT)
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{
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met='1';
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type='E';
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}
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if(rte->u.ospf.metric2!=LSINFINITY) met='2';
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if(rte->attrs->source==RTS_OSPF_IA) type='A';
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if(rte->attrs->source==RTS_OSPF) type='I';
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buf += bsprintf(buf, " %c", type);
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if(met!=' ') buf += bsprintf(buf, "%c", met);
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buf += bsprintf(buf, " (%d/%d", rte->pref, rte->u.ospf.metric1);
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if(rte->u.ospf.metric2!=LSINFINITY) buf += bsprintf(buf, "/%d", rte->u.ospf.metric2);
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buf += bsprintf(buf, ")");
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if(rte->attrs->source==RTS_OSPF_EXT && rte->u.ospf.tag)
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{
|
|
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
|
|
};
|
|
|