[ospfd] Add passive-interface default support

2006-10-22 Yar Tikhiy <yar@comp.chem.msu.su>

	* (general) Add support for passive-interface default (with
	  minor edits by Paul Jakma).
	* ospf_interface.h: Add OSPF_IF_PASSIVE_STATUS macro, looking
	  at configured value, or the global 'default' value, as
	  required.
	* ospf_interface.c: (ospf_if_new_hook) Leave passive
	  unconfigured per default, allowing global 'default' to
	  take effect for unconfigured interfaces.
	* ospf_packet.c: (various) use OSPF_IF_PASSIVE_STATUS
	* ospf_vty.c: (ospf_passive_interface_default) new function,
	  unset passive from all interfaces if default is enabled, as
	  the per-iface settings become redundant.
	  (ospf_passive_interface_update) new func, update passive
	  setting taking global default into account.
	  ({no,}ospf_passive_interface_addr_cmd) Add support for
	  'default' variant of command.
	  (show_ip_ospf_interface_sub) Update to take global
	  default into account when printing passive status.
	  (ospf_config_write) ditto.
	* ospfd.c: (ospf_new) set global passive-interface default.
	* ospfd.h: (struct ospf) Add field for global
          passive-interface.
diff --git a/ospfd/ospf_interface.h b/ospfd/ospf_interface.h
index 5a825ea..79b178d 100644
--- a/ospfd/ospf_interface.h
+++ b/ospfd/ospf_interface.h
@@ -50,6 +50,13 @@
   DECLARE_IF_PARAM (u_char, type);                   /* type of interface */
 #define OSPF_IF_ACTIVE                  0
 #define OSPF_IF_PASSIVE		        1
+
+#define OSPF_IF_PASSIVE_STATUS(O) \
+       (OSPF_IF_PARAM_CONFIGURED((O)->params, passive_interface) ? \
+         (O)->params->passive_interface : \
+         (OSPF_IF_PARAM_CONFIGURED(IF_DEF_PARAMS((O)->ifp), passive_interface) ? \
+           IF_DEF_PARAMS((O)->ifp)->passive_interface : \
+           (O)->ospf->passive_interface_default))
   
   DECLARE_IF_PARAM (u_int32_t, v_hello);             /* Hello Interval */
   DECLARE_IF_PARAM (u_int32_t, v_wait);              /* Router Dead Interval */