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[ospfd] trivial: consolidate LSDB delete code into single function

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2006-08-04 Paul Jakma <paul.jakma@sun.com>

	* ospf_lsdb.c: (ospf_lsdb_delete_entry) new function, consolidate
	  exact same functionality replicated in other functions.
	  (ospf_lsdb_add) Strip out code by using ospf_lsdb_delete_entry.
	  (ospf_lsdb_delete) ditto.
	  (ospf_lsdb_delete_all) ditto.
This commit is contained in:
Paul Jakma 2006-08-27 06:24:34 +00:00
parent 66c454f2a5
commit ba122e779d
2 changed files with 53 additions and 53 deletions
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8
ospfd/ChangeLog
View File

@ -1,3 +1,11 @@
2006-08-04 Paul Jakma <paul.jakma@sun.com>
* ospf_lsdb.c: (ospf_lsdb_delete_entry) new function, consolidate
exact same functionality replicated in other functions.
(ospf_lsdb_add) Strip out code by using ospf_lsdb_delete_entry.
(ospf_lsdb_delete) ditto.
(ospf_lsdb_delete_all) ditto.
2006-07-27 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
* ospfd.c: (ospf_router_id_update) Fix and document the algorithm for

98
ospfd/ospf_lsdb.c
View File

@ -81,6 +81,31 @@ lsdb_prefix_set (struct prefix_ls *lp, struct ospf_lsa *lsa)
lp->adv_router = lsa->data->adv_router;
}
static void
ospf_lsdb_delete_entry (struct ospf_lsdb *lsdb, struct route_node *rn)
{
struct ospf_lsa *lsa = rn->info;
if (!lsa)
return;
assert (rn->table == lsdb->type[lsa->data->type].db);
if (IS_LSA_SELF (lsa))
lsdb->type[lsa->data->type].count_self--;
lsdb->type[lsa->data->type].count--;
lsdb->type[lsa->data->type].checksum -= ntohs(lsa->data->checksum);
lsdb->total--;
rn->info = NULL;
route_unlock_node (rn);
#ifdef MONITOR_LSDB_CHANGE
if (lsdb->del_lsa_hook != NULL)
(* lsdb->del_lsa_hook)(lsa);
#endif /* MONITOR_LSDB_CHANGE */
ospf_lsa_unlock (&lsa); /* lsdb */
return;
}
/* Add new LSA to lsdb. */
void
ospf_lsdb_add (struct ospf_lsdb *lsdb, struct ospf_lsa *lsa)
@ -88,36 +113,30 @@ ospf_lsdb_add (struct ospf_lsdb *lsdb, struct ospf_lsa *lsa)
struct route_table *table;
struct prefix_ls lp;
struct route_node *rn;
struct ospf_lsa *old;
table = lsdb->type[lsa->data->type].db;
lsdb_prefix_set (&lp, lsa);
rn = route_node_get (table, (struct prefix *)&lp);
if (!rn->info)
{
if (IS_LSA_SELF (lsa))
lsdb->type[lsa->data->type].count_self++;
lsdb->type[lsa->data->type].count++;
lsdb->total++;
}
else
{
if (rn->info == lsa)
return;
old = rn->info;
lsdb->type[old->data->type].checksum -= ntohs(old->data->checksum);
/* nothing to do? */
if (rn->info && rn->info == lsa)
return;
/* purge old entry? */
if (rn->info)
ospf_lsdb_delete_entry (lsdb, rn);
ospf_lsa_unlock (&rn->info);
route_unlock_node (rn);
}
if (IS_LSA_SELF (lsa))
lsdb->type[lsa->data->type].count_self++;
lsdb->type[lsa->data->type].count++;
lsdb->total++;
#ifdef MONITOR_LSDB_CHANGE
if (lsdb->new_lsa_hook != NULL)
(* lsdb->new_lsa_hook)(lsa);
#endif /* MONITOR_LSDB_CHANGE */
lsdb->type[lsa->data->type].checksum += ntohs(lsa->data->checksum);
rn->info = ospf_lsa_lock (lsa);
rn->info = ospf_lsa_lock (lsa); /* lsdb */
}
void
@ -146,24 +165,11 @@ ospf_lsdb_delete (struct ospf_lsdb *lsdb, struct ospf_lsa *lsa)
table = lsdb->type[lsa->data->type].db;
lsdb_prefix_set (&lp, lsa);
rn = route_node_lookup (table, (struct prefix *) &lp);
if (rn)
if (rn->info == lsa)
{
if (IS_LSA_SELF (lsa))
lsdb->type[lsa->data->type].count_self--;
lsdb->type[lsa->data->type].count--;
lsdb->type[lsa->data->type].checksum -= ntohs(lsa->data->checksum);
lsdb->total--;
rn->info = NULL;
route_unlock_node (rn);
route_unlock_node (rn);
#ifdef MONITOR_LSDB_CHANGE
if (lsdb->del_lsa_hook != NULL)
(* lsdb->del_lsa_hook)(lsa);
#endif /* MONITOR_LSDB_CHANGE */
ospf_lsa_unlock (&lsa);
return;
}
if (rn && (rn->info == lsa))
{
ospf_lsdb_delete_entry (lsdb, rn);
route_unlock_node (rn); /* route_node_lookup */
}
}
void
@ -171,28 +177,14 @@ ospf_lsdb_delete_all (struct ospf_lsdb *lsdb)
{
struct route_table *table;
struct route_node *rn;
struct ospf_lsa *lsa;
int i;
for (i = OSPF_MIN_LSA; i < OSPF_MAX_LSA; i++)
{
table = lsdb->type[i].db;
for (rn = route_top (table); rn; rn = route_next (rn))
if ((lsa = (rn->info)) != NULL)
{
if (IS_LSA_SELF (lsa))
lsdb->type[i].count_self--;
lsdb->type[i].count--;
lsdb->type[i].checksum -= ntohs(lsa->data->checksum);
lsdb->total--;
rn->info = NULL;
route_unlock_node (rn);
#ifdef MONITOR_LSDB_CHANGE
if (lsdb->del_lsa_hook != NULL)
(* lsdb->del_lsa_hook)(lsa);
#endif /* MONITOR_LSDB_CHANGE */
ospf_lsa_unlock (&lsa);
}
if (rn->info != NULL)
ospf_lsdb_delete_entry (lsdb, rn);
}
}