Sync with nest's rt table and some minor improvements.

2024-05-11 16:54:54 +00:00 · 2000-04-30 11:31:05 +00:00
parent e80e9d0da5
commit c6c5626436
9 changed files with 84 additions and 24 deletions
--- a/proto/ospf/lsalib.c
+++ b/proto/ospf/lsalib.c
@@ -87,7 +87,7 @@ htonlsab(void *h, void *n, u8 type, u16 len)
      hs=h;
      ns=n;

-      ns->netmask=htonl(hs->netmask);
+      ns->netmask=ipa_hton(hs->netmask);

      hn=(struct ospf_lsa_summ_net *)(hs+1);
      nn=(struct ospf_lsa_summ_net *)(ns+1);
@@ -109,7 +109,7 @@ htonlsab(void *h, void *n, u8 type, u16 len)
      he=h;
      ne=n;

-      ne->netmask=htonl(he->netmask);
+      ne->netmask=ipa_hton(he->netmask);

      ht=(struct ospf_lsa_ext_tos *)(he+1);
      nt=(struct ospf_lsa_ext_tos *)(ne+1);
@@ -181,7 +181,7 @@ ntohlsab(void *n, void *h, u8 type, u16 len)
      hs=h;
      ns=n;

-      hs->netmask=ntohl(ns->netmask);
+      hs->netmask=ipa_ntoh(ns->netmask);

      hn=(struct ospf_lsa_summ_net *)(hs+1);
      nn=(struct ospf_lsa_summ_net *)(ns+1);
@@ -203,7 +203,7 @@ ntohlsab(void *n, void *h, u8 type, u16 len)
      he=h;
      ne=n;

-      he->netmask=ntohl(ne->netmask);
+      he->netmask=ipa_ntoh(ne->netmask);

      ht=(struct ospf_lsa_ext_tos *)(he+1);
      nt=(struct ospf_lsa_ext_tos *)(ne+1);
--- a/proto/ospf/neighbor.c
+++ b/proto/ospf/neighbor.c
@@ -368,6 +368,18 @@ find_neigh(struct ospf_iface *ifa, u32 rid)
  return NULL;
 }

+struct ospf_neighbor *
+find_neigh_noifa(struct proto_ospf *po, u32 rid)
+{
+  struct ospf_neighbor *n;
+  struct ospf_iface *ifa;
+
+  WALK_LIST (ifa, po->iface_list)
+    if((n=find_neigh(ifa, rid))!=NULL)
+      return n;
+  return NULL;
+}
+
 struct ospf_area *
 ospf_find_area(struct proto_ospf *po, u32 aid)
 {
--- a/proto/ospf/neighbor.h
+++ b/proto/ospf/neighbor.h
@@ -18,6 +18,7 @@ void tryadj(struct ospf_neighbor *n, struct proto *p);
 void ospf_neigh_sm(struct ospf_neighbor *n, int event);
 void bdr_election(struct ospf_iface *ifa, struct proto *p);
 struct ospf_neighbor *find_neigh(struct ospf_iface *ifa, u32 rid);
+struct ospf_neighbor *find_neigh_noifa(struct proto_ospf *po, u32 rid);
 struct ospf_area *ospf_find_area(struct proto_ospf *po, u32 aid);

 #endif /* _BIRD_OSPF_NEIGHBOR_H_ */
--- a/proto/ospf/ospf.c
+++ b/proto/ospf/ospf.c
@@ -50,6 +50,7 @@ ospf_dump(struct proto *p)
    debug("%s: LSA graph dump for area \"%I\" finished\n\n", p->name,
      oa->areaid);
  }
+  neigh_dump_all();

 }

--- a/proto/ospf/ospf.h
+++ b/proto/ospf/ospf.h
@@ -32,6 +32,7 @@
 #define OSPF_VERSION 2
 #define AllSPFRouters ipa_from_u32(0xe0000005)	/* 224.0.0.5 */
 #define AllDRouters ipa_from_u32(0xe0000006)	/* 224.0.0.6 */
+#define DEFAULTDES ipa_from_u32(0)
 #else
 #error Multicast address not defined in IPv6
 #endif
@@ -40,8 +41,7 @@
 #define LSREFRESHTIME 1800	/* 30 minutes */
 #define MINLSINTERVAL 5
 #define MINLSARRIVAL 1
-#define LSINFINITY 0xffffff
-/*#define DEFAULTDES 0.0.0.0 FIXME: How to define it? */
+#define LSINFINITY 0xffff	/* RFC says 0xffffff ??? */

 struct ospf_config {
  struct proto_config c;
@@ -203,11 +203,11 @@ struct ospf_lsa_rt_link_tos {	/* Actually we ignore TOS. This is useless */
 };

 struct ospf_lsa_net {
-  u32 netmask;
+  ip_addr netmask;
 };

 struct ospf_lsa_summ {
-  u32 netmask;
+  ip_addr netmask;
 };

 struct ospf_lsa_summ_net {
@@ -217,7 +217,7 @@ struct ospf_lsa_summ_net {
 };

 struct ospf_lsa_ext {
-  u32 netmask;
+  ip_addr netmask;
 };

 struct ospf_lsa_ext_tos {
--- a/proto/ospf/rt.c
+++ b/proto/ospf/rt.c
@@ -40,7 +40,7 @@ ospf_rt_spfa(struct ospf_area *oa, struct proto *p)
  {
    struct top_hash_entry *act,*tmp;
    node *n;
-    struct ospf_lsa_net *net;
+    struct ospf_lsa_net *netw;

    n=HEAD(oa->cand);
    act=SKIP_BACK(struct top_hash_entry, cn, n);
@@ -72,21 +72,53 @@ ospf_rt_spfa(struct ospf_area *oa, struct proto *p)
 	      log("Unknown link type in router lsa.\n");
 	      break;
 	  }
-	  add_cand(&oa->cand,tmp,act,act->dist+rtl->metric);
+	  add_cand(&oa->cand,tmp,act,act->dist+rtl->metric,p);
 	}
        break;
      case LSA_T_NET:
-	net=(struct ospf_lsa_net *)act->lsa_body;
-	rts=(u32 *)(net+1);
+	netw=(struct ospf_lsa_net *)act->lsa_body;
+	rts=(u32 *)(netw+1);
 	for(i=0;i<(act->lsa.length-sizeof(struct ospf_lsa_header)-
 	  sizeof(struct ospf_lsa_net))/sizeof(u32);i++)
 	{
 	  tmp=ospf_hash_find(oa->gr, *rts, *rts, LSA_T_RT);
-          add_cand(&oa->cand,tmp,act,act->dist);
+          add_cand(&oa->cand,tmp,act,act->dist,p);
 	}
        break;
    }
    /* FIXME Now modify rt for this entry */
+    if((act->lsa.type==LSA_T_NET)&&(act->nhi!=NULL))
+    {
+      net *ne;
+      rte *e;
+      ip_addr ip;
+      struct ospf_lsa_net *ln=en->lsa_body;
+
+      a0.proto=p;
+      a0.source=RTS_OSPF;
+      a0.scope=SCOPE_UNIVERSE;	/* What's this good for? */
+      a0.cast=RTC_UNICAST;
+      a0.dest=RTD_ROUTER;	/* FIXME */
+      a0.flags=0;
+      a0.iface=act->nhi;
+      a0.gw=act->nh;
+      ip=ipa_from_u32(act->lsa.id);
+
+
+      ne=net_get(p->table, ip, ipa_mklen(ln->netmask));
+      e=rte_get_temp(&a0);
+      e->u.ospf.metric1=en->dist;
+      e->u.ospf.metric2=0;
+      e->u.ospf.tag=0;			/* FIXME Some config? */
+
+      rte_update(p->table, ne, p, e);
+
+      //a0.from=act->lsa.rt;
+    }
+
+
+
+
  }

  /* Now calculate routes to stub networks */
@@ -121,7 +153,7 @@ ospf_rt_spfa(struct ospf_area *oa, struct proto *p)

 void
 add_cand(list *l, struct top_hash_entry *en, struct top_hash_entry *par, 
-  u16 dist)
+  u16 dist, struct proto *p)
 {
  node *prev,*n;
  int flag=0;
@@ -137,8 +169,10 @@ add_cand(list *l, struct top_hash_entry *en, struct top_hash_entry *par,
   * FIXME The line above is not a bug, but we don't support
   * multiple next hops. I'll start as soon as nest will
   */
+
+  en->nhi=NULL;
  
-  en->nh=calc_next_hop(par);
+  calc_next_hop(par,en,p);

  if(en->color==CANDIDATE)	/* We found shorter path */
  {
@@ -166,12 +200,21 @@ add_cand(list *l, struct top_hash_entry *en, struct top_hash_entry *par,
  
 }

-struct top_hash_entry *
-calc_next_hop(struct top_hash_entry *par)
+void
+calc_next_hop(struct top_hash_entry *par, struct top_hash_entry *en,
+  struct proto *p)
 {
-  if(par->nh==NULL)
+  struct ospf_neighbor *neigh;
+  struct proto_ospf *po=(struct proto_ospf *)p;
+  if(par->nhi==NULL)
  {
-    if(par->lsa.type!=LSA_T_RT) return NULL;
+    neighbor *nn;
+    if(par->lsa.type!=LSA_T_RT) return;
+    if((neigh=find_neigh_noifa(po,en->lsa.rt))==NULL) bug("XXX\n");
+    nn=neigh_find(p,&neigh->ip,0);
+    en->nh=nn->addr;
+    en->nhi=nn->iface;
  }
-  return par;
+  en->nh=par->nh;
+  en->nhi=par->nhi;
 }
--- a/proto/ospf/rt.h
+++ b/proto/ospf/rt.h
@@ -12,7 +12,8 @@

 void ospf_rt_spfa(struct ospf_area *oa, struct proto *p);
 void add_cand(list *l, struct top_hash_entry *en, struct top_hash_entry *par,
-  u16 dist);
-struct top_hash_entry *calc_next_hop(struct top_hash_entry *par);
+  u16 dist, struct proto *p);
+void calc_next_hop(struct top_hash_entry *par, struct top_hash_entry *en,
+  struct proto *p);

 #endif /* _BIRD_OSPF_RT_H_ */
--- a/proto/ospf/topology.c
+++ b/proto/ospf/topology.c
@@ -349,6 +349,7 @@ ospf_hash_get(struct top_graph *f, u32 lsa, u32 rtr, u32 type)
  e->lsa.rt = rtr;
  e->lsa.type = type;
  e->lsa_body = NULL;
+  e->nhi=NULL;
  e->next=*ee;		/* MJ you forgot this :-) */
  *ee=e;
  if (f->hash_entries++ > f->hash_entries_max)
--- a/proto/ospf/topology.h
+++ b/proto/ospf/topology.h
@@ -16,7 +16,8 @@ struct top_hash_entry {  /* Index for fast mapping (type,rtrid,LSid)->vertex */
  struct ospf_lsa_header lsa;
  void *lsa_body;
  bird_clock_t inst_t;			/* Time of installation into DB */
-  struct top_hash_entry *nh;		/* Next hop */
+  ip_addr nh;				/* Next hop */
+  struct iface *nhi;
  u16 dist;				/* Distance from the root */
  u8 color;
 #define OUTSPF 0