ipv6: Replace inet6_ifaddr->dead with state
This patch replaces the boolean dead flag on inet6_ifaddr with
a state enum. This allows us to roll back changes when deleting
an address according to whether DAD has completed or not.
This patch only adds the state field and does not change the logic.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h
index 13f9fc0..f95ff8d 100644
--- a/include/net/if_inet6.h
+++ b/include/net/if_inet6.h
@@ -32,6 +32,13 @@
#ifdef __KERNEL__
+enum {
+ INET6_IFADDR_STATE_DAD,
+ INET6_IFADDR_STATE_POSTDAD,
+ INET6_IFADDR_STATE_UP,
+ INET6_IFADDR_STATE_DEAD,
+};
+
struct inet6_ifaddr {
struct in6_addr addr;
__u32 prefix_len;
@@ -40,6 +47,9 @@
__u32 prefered_lft;
atomic_t refcnt;
spinlock_t lock;
+ spinlock_t state_lock;
+
+ int state;
__u8 probes;
__u8 flags;
@@ -62,8 +72,6 @@
struct inet6_ifaddr *ifpub;
int regen_count;
#endif
-
- int dead;
struct rcu_head rcu;
};