2005-03-29 Andrew J. Schorr <ajschorr@alumni.princeton.edu>
* rt_netlink.c: (netlink_link_change) If the status of an
operative interface changes (e.g. MTU changes), the client
daemons should be notified by calling zebra_interface_up_update.
Previously, the information was being updated in zebra's
interface structure, but the clients were not notified of
changes to an operative interface.
* ospf_zebra.c: (ospf_interface_state_up) If the MTU of an operative
interface changes, print a debug message and call ospf_if_reset()
to simulate down/up on the interface.
* ospf_interface.h: Declare new function ospf_if_reset().
* ospf_interface.c: (ospf_if_reset) New function to call ospf_if_down
and ospf_if_up for all ospf interfaces attached to an interface.
diff --git a/ospfd/ospf_zebra.c b/ospfd/ospf_zebra.c
index 8468aed..300103e 100644
--- a/ospfd/ospf_zebra.c
+++ b/ospfd/ospf_zebra.c
@@ -168,7 +168,6 @@
zebra_size_t length)
{
struct interface *ifp;
- struct interface if_tmp;
struct ospf_interface *oi;
struct route_node *rn;
@@ -181,6 +180,7 @@
if (if_is_operative (ifp))
{
/* Temporarily keep ifp values. */
+ struct interface if_tmp;
memcpy (&if_tmp, ifp, sizeof (struct interface));
zebra_interface_if_set_value (zclient->ibuf, ifp);
@@ -196,6 +196,16 @@
ospf_if_recalculate_output_cost (ifp);
}
+
+ if (if_tmp.mtu != ifp->mtu)
+ {
+ if (IS_DEBUG_OSPF (zebra, ZEBRA_INTERFACE))
+ zlog_debug ("Zebra: Interface[%s] MTU change %u -> %u.",
+ ifp->name, if_tmp.mtu, ifp->mtu);
+
+ /* Must reset the interface (simulate down/up) when MTU changes. */
+ ospf_if_reset(ifp);
+ }
return 0;
}