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ospf6d: fix crash in SPF calculation

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* ospf6_spf.c: Don't replace a node with another node with a lower
  number of hops, instead get them from the queue in the correct
  order. (Actually, the replacement crashed the ospf6d daemon
  rather than worked.)
(cherry picked from commit 403138e189)
This commit is contained in:
Dmitrij Tejblum 2011-01-13 18:25:40 +03:00 committed by Denis Ovsienko
parent dfc1d5caac
commit a1239bc50d
1 changed files with 5 additions and 17 deletions
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22
ospf6d/ospf6_spf.c
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@ -50,7 +50,9 @@ ospf6_vertex_cmp (void *a, void *b)
struct ospf6_vertex *vb = (struct ospf6_vertex *) b; struct ospf6_vertex *vb = (struct ospf6_vertex *) b;
/* ascending order */ /* ascending order */
return (va->cost - vb->cost); if (va->cost != vb->cost)
return (va->cost - vb->cost);
return (va->hops - vb->hops);
} }
static int static int
@ -320,22 +322,8 @@ ospf6_spf_install (struct ospf6_vertex *v,
} }
prev = (struct ospf6_vertex *) route->route_option; prev = (struct ospf6_vertex *) route->route_option;
if (prev->hops > v->hops) assert (prev->hops <= v->hops);
{ ospf6_vertex_delete (v);
for (ALL_LIST_ELEMENTS (prev->child_list, node, nnode, w))
{
assert (w->parent == prev);
w->parent = v;
listnode_add_sort (v->child_list, w);
}
listnode_delete (prev->parent->child_list, prev);
listnode_add_sort (v->parent->child_list, v);
ospf6_vertex_delete (prev);
route->route_option = v;
}
else
ospf6_vertex_delete (v);
return -1; return -1;
} }