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2005-05-19 Paul Jakma <paul.jakma@sun.com>

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* ospf_interface.c: (ospf_if_table_lookup) Fix a serious bug
	  a less serious one.
	  1: this function is supposed to lookup
	  entries in the oifs ospf_interface route_table and return either
	  an existing oi or NULL to indicate not found, its caller depends
	  on this, yet this function uses route_node_get which /always/
	  returns a route_node - one is created if none exists. Use
	  route_node_lookup instead. This should fix root cause of the
	  reports of the (ospf_add_to_if) assert being hit.
	  2: oi's are inserted into this table with prefixlength set to
	  /32 (indeed, it should be a hash table, not a route_table),
	  however prefixlength to lookup was not changed, if no valid entry
	  can be inserted other than /32, then nothng but /32 should be
	  looked up. This possibly only worked by fluke..
	  Fix confirmed by 2 reporters (one list, one IRC), definitely a
	  backport candidate once it has been incubated in HEAD for a while.
	  Thanks to Patrick Friedel and Ivan Warren for testing.
This commit is contained in:
paul 2005-05-18 23:29:57 +00:00
parent 024a7f0697
commit a3387a4488
2 changed files with 29 additions and 5 deletions
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20
ospfd/ChangeLog
View File

@ -1,3 +1,23 @@
2005-05-19 Paul Jakma <paul.jakma@sun.com>
* ospf_interface.c: (ospf_if_table_lookup) Fix a serious bug
a less serious one.
1: this function is supposed to lookup
entries in the oifs ospf_interface route_table and return either
an existing oi or NULL to indicate not found, its caller depends
on this, yet this function uses route_node_get which /always/
returns a route_node - one is created if none exists. Use
route_node_lookup instead. This should fix root cause of the
reports of the (ospf_add_to_if) assert being hit.
2: oi's are inserted into this table with prefixlength set to
/32 (indeed, it should be a hash table, not a route_table),
however prefixlength to lookup was not changed, if no valid entry
can be inserted other than /32, then nothng but /32 should be
looked up. This possibly only worked by fluke..
Fix confirmed by 2 reporters (one list, one IRC), definitely a
backport candidate once it has been incubated in HEAD for a while.
Thanks to Patrick Friedel and Ivan Warren for testing.
2005-05-11 Paul Jakma <paul.jakma@sun.com>
* (general) Fix memory leaks in opaque AS-scope LSAs, reported and

14
ospfd/ospf_interface.c
View File

@ -150,14 +150,18 @@ ospf_if_table_lookup (struct interface *ifp, struct prefix *prefix)
{
struct prefix p;
struct route_node *rn;
struct ospf_interface *rninfo;
struct ospf_interface *rninfo = NULL;
p = *prefix;
rn = route_node_get (IF_OIFS (ifp), &p);
p.prefixlen = IPV4_MAX_PREFIXLEN;
/* route_node_get implicitely locks */
rninfo = (struct ospf_interface *) rn->info;
route_unlock_node (rn);
if (rn = route_node_lookup (IF_OIFS (ifp), &p))
{
rninfo = (struct ospf_interface *) rn->info;
route_unlock_node (rn);
}
return rninfo;
}