From 36bdbcae2fa2a6dfa99344d4190fcea0aa7b7c25 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 2 Jul 2012 22:58:02 -0700 Subject: [PATCH] net: Kill dst->_neighbour, accessors, and final uses. No longer used. Signed-off-by: David S. Miller --- include/net/dst.h | 17 +---------------- net/core/dst.c | 18 ------------------ 2 files changed, 1 insertion(+), 34 deletions(-) diff --git a/include/net/dst.h b/include/net/dst.h index 295a70547e7..b2634e44661 100644 --- a/include/net/dst.h +++ b/include/net/dst.h @@ -42,7 +42,7 @@ struct dst_entry { 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 @@ struct dst_entry { }; }; -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 a6e19a23a74..07bacff84aa 100644 --- a/net/core/dst.c +++ b/net/core/dst.c @@ -171,7 +171,6 @@ void *dst_alloc(struct dst_ops *ops, struct net_device *dev, 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 @@ EXPORT_SYMBOL(__dst_free); 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 @@ static void dst_ifdown(struct dst_entry *dst, struct net_device *dev, 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(); } } -- 2.20.1