ospfd: introduce ospf_lsa_minlen[] (BZ#705)
This commit ports more packet checks to OSPFv2, in particular, LSA size
verification and Router-LSA link blocks verification.
* ospf_lsa.h: add LSA size macros
* ospf_packet.h: add struct ospf_ls_update
* ospf_packet.c
* ospf_lsa_minlen[]: a direct equivalent of ospf6_lsa_minlen[]
* ospf_router_lsa_links_examin(): new function, verifies trailing
part of a Router-LSA
* ospf_lsa_examin(): new function like ospf6_lsa_examin()
* ospf_lsaseq_examin(): new function like ospf6_lsaseq_examin()
* ospf_packet_examin(): add type-specific deeper level checks
diff --git a/ospfd/ospf_packet.h b/ospfd/ospf_packet.h
index 3cbe889..337686a 100644
--- a/ospfd/ospf_packet.h
+++ b/ospfd/ospf_packet.h
@@ -121,6 +121,10 @@
u_int32_t dd_seqnum;
};
+struct ospf_ls_update
+{
+ u_int32_t num_lsas;
+};
/* Macros. */
/* XXX Perhaps obsolete; function in ospf_packet.c */