63 void dst_init(struct dst_entry *dst, struct dst_ops *ops,  in dst_init()  argument
67 	dst->dev = dev;  in dst_init()
70 	dst->ops = ops;  in dst_init()
71 	dst_init_metrics(dst, dst_default_metrics.metrics, true);  in dst_init()
72 	dst->expires = 0UL;  in dst_init()
74 	dst->xfrm = NULL;  in dst_init()
76 	dst->input = dst_discard;  in dst_init()
77 	dst->output = dst_discard_out;  in dst_init()
78 	dst->error = 0;  in dst_init()
79 	dst->obsolete = initial_obsolete;  in dst_init()
80 	dst->header_len = 0;  in dst_init()
81 	dst->trailer_len = 0;  in dst_init()
83 	dst->tclassid = 0;  in dst_init()
85 	dst->lwtstate = NULL;  in dst_init()
86 	atomic_set(&dst->__refcnt, initial_ref);  in dst_init()
87 	dst->__use = 0;  in dst_init()
88 	dst->lastuse = jiffies;  in dst_init()
89 	dst->flags = flags;  in dst_init()
98 	struct dst_entry *dst;  in dst_alloc()  local
105 	dst = kmem_cache_alloc(ops->kmem_cachep, GFP_ATOMIC);  in dst_alloc()
106 	if (!dst)  in dst_alloc()
109 	dst_init(dst, ops, dev, initial_ref, initial_obsolete, flags);  in dst_alloc()
111 	return dst;  in dst_alloc()
115 struct dst_entry *dst_destroy(struct dst_entry * dst)  in dst_destroy()  argument
122 	if (dst->xfrm) {  in dst_destroy()
123 		struct xfrm_dst *xdst = (struct xfrm_dst *) dst;  in dst_destroy()
128 	if (!(dst->flags & DST_NOCOUNT))  in dst_destroy()
129 		dst_entries_add(dst->ops, -1);  in dst_destroy()
131 	if (dst->ops->destroy)  in dst_destroy()
132 		dst->ops->destroy(dst);  in dst_destroy()
133 	if (dst->dev)  in dst_destroy()
134 		dev_put(dst->dev);  in dst_destroy()
136 	lwtstate_put(dst->lwtstate);  in dst_destroy()
138 	if (dst->flags & DST_METADATA)  in dst_destroy()
139 		metadata_dst_free((struct metadata_dst *)dst);  in dst_destroy()
141 		kmem_cache_free(dst->ops->kmem_cachep, dst);  in dst_destroy()
143 	dst = child;  in dst_destroy()
144 	if (dst)  in dst_destroy()
145 		dst_release_immediate(dst);  in dst_destroy()
152 	struct dst_entry *dst = container_of(head, struct dst_entry, rcu_head);  in dst_destroy_rcu()  local
154 	dst = dst_destroy(dst);  in dst_destroy_rcu()
166 void dst_dev_put(struct dst_entry *dst)  in dst_dev_put()  argument
168 	struct net_device *dev = dst->dev;  in dst_dev_put()
170 	dst->obsolete = DST_OBSOLETE_DEAD;  in dst_dev_put()
171 	if (dst->ops->ifdown)  in dst_dev_put()
172 		dst->ops->ifdown(dst, dev, true);  in dst_dev_put()
173 	dst->input = dst_discard;  in dst_dev_put()
174 	dst->output = dst_discard_out;  in dst_dev_put()
175 	dst->dev = dev_net(dst->dev)->loopback_dev;  in dst_dev_put()
176 	dev_hold(dst->dev);  in dst_dev_put()
181 void dst_release(struct dst_entry *dst)  in dst_release()  argument
183 	if (dst) {  in dst_release()
186 		newrefcnt = atomic_dec_return(&dst->__refcnt);  in dst_release()
189 					     __func__, dst, newrefcnt);  in dst_release()
191 			call_rcu(&dst->rcu_head, dst_destroy_rcu);  in dst_release()
196 void dst_release_immediate(struct dst_entry *dst)  in dst_release_immediate()  argument
198 	if (dst) {  in dst_release_immediate()
201 		newrefcnt = atomic_dec_return(&dst->__refcnt);  in dst_release_immediate()
204 					     __func__, dst, newrefcnt);  in dst_release_immediate()
206 			dst_destroy(dst);  in dst_release_immediate()
211 u32 *dst_cow_metrics_generic(struct dst_entry *dst, unsigned long old)  in dst_cow_metrics_generic()  argument
223 		prev = cmpxchg(&dst->_metrics, old, new);  in dst_cow_metrics_generic()
241 void __dst_destroy_metrics_generic(struct dst_entry *dst, unsigned long old)  in __dst_destroy_metrics_generic()  argument
246 	prev = cmpxchg(&dst->_metrics, old, new);  in __dst_destroy_metrics_generic()
274 	struct dst_entry *dst;  in __metadata_dst_init()  local
276 	dst = &md_dst->dst;  in __metadata_dst_init()
277 	dst_init(dst, &md_dst_ops, NULL, 1, DST_OBSOLETE_NONE,  in __metadata_dst_init()
280 	dst->input = dst_md_discard;  in __metadata_dst_init()
281 	dst->output = dst_md_discard_out;  in __metadata_dst_init()
283 	memset(dst + 1, 0, sizeof(*md_dst) + optslen - sizeof(*dst));  in __metadata_dst_init()