garp: remove last synchronize_rcu() call
When removing last vlan from a device, garp_uninit_applicant() calls
synchronize_rcu() to make sure no user can still manipulate struct
garp_applicant before we free it.
Use call_rcu() instead, as a step to further net_device dismantle
optimizations.
Add the temporary garp_cleanup_module() function to make sure no pending
call_rcu() are left at module unload time [ this will be removed when
kfree_rcu() is available ]
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/garp.h b/include/net/garp.h
index 8cabbf08..834d8ad 100644
--- a/include/net/garp.h
+++ b/include/net/garp.h
@@ -104,6 +104,7 @@
struct sk_buff_head queue;
struct sk_buff *pdu;
struct rb_root gid;
+ struct rcu_head rcu;
};
struct garp_port {