net: Kill dst->_neighbour, accessors, and final uses.
No longer used.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/dst.h b/include/net/dst.h
index 295a705..b2634e4 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -42,7 +42,7 @@
struct dst_entry *from;
};
struct dst_entry *path;
- struct neighbour __rcu *_neighbour;
+ void *__pad0;
#ifdef CONFIG_XFRM
struct xfrm_state *xfrm;
#else
@@ -96,21 +96,6 @@
};
};
-static inline struct neighbour *dst_get_neighbour_noref(struct dst_entry *dst)
-{
- return rcu_dereference(dst->_neighbour);
-}
-
-static inline struct neighbour *dst_get_neighbour_noref_raw(struct dst_entry *dst)
-{
- return rcu_dereference_raw(dst->_neighbour);
-}
-
-static inline void dst_set_neighbour(struct dst_entry *dst, struct neighbour *neigh)
-{
- rcu_assign_pointer(dst->_neighbour, neigh);
-}
-
extern u32 *dst_cow_metrics_generic(struct dst_entry *dst, unsigned long old);
extern const u32 dst_default_metrics[RTAX_MAX];
diff --git a/net/core/dst.c b/net/core/dst.c
index a6e19a2..07bacff 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -171,7 +171,6 @@
dst_init_metrics(dst, dst_default_metrics, true);
dst->expires = 0UL;
dst->path = dst;
- RCU_INIT_POINTER(dst->_neighbour, NULL);
#ifdef CONFIG_XFRM
dst->xfrm = NULL;
#endif
@@ -225,19 +224,12 @@
struct dst_entry *dst_destroy(struct dst_entry * dst)
{
struct dst_entry *child;
- struct neighbour *neigh;
smp_rmb();
again:
- neigh = rcu_dereference_protected(dst->_neighbour, 1);
child = dst->child;
- if (neigh) {
- RCU_INIT_POINTER(dst->_neighbour, NULL);
- neigh_release(neigh);
- }
-
if (!(dst->flags & DST_NOCOUNT))
dst_entries_add(dst->ops, -1);
@@ -361,19 +353,9 @@
if (!unregister) {
dst->input = dst->output = dst_discard;
} else {
- struct neighbour *neigh;
-
dst->dev = dev_net(dst->dev)->loopback_dev;
dev_hold(dst->dev);
dev_put(dev);
- rcu_read_lock();
- neigh = dst_get_neighbour_noref(dst);
- if (neigh && neigh->dev == dev) {
- neigh->dev = dst->dev;
- dev_hold(dst->dev);
- dev_put(dev);
- }
- rcu_read_unlock();
}
}