32 	return hash_32(handle.resource, VMCI_RESOURCE_HASH_BITS);  in vmci_resource_hash()
36  * Gets a resource (if one exists) matching given handle from the hash table.
41 	struct vmci_resource *r, *resource = NULL;  in vmci_resource_lookup()  local
48 		u32 rid = r->handle.resource;  in vmci_resource_lookup()
51 		    rid == handle.resource &&  in vmci_resource_lookup()
54 			resource = r;  in vmci_resource_lookup()
60 	return resource;  in vmci_resource_lookup()
64  * Find an unused resource ID and return it. The first
67  * Returns VMCI resource id on success, VMCI_INVALID_ID on failure.
77 	 * Generate a unique resource ID.  Keep on trying until we wrap around  in vmci_resource_find_id()
99 int vmci_resource_add(struct vmci_resource *resource,  in vmci_resource_add()  argument
109 	if (handle.resource == VMCI_INVALID_ID) {  in vmci_resource_add()
110 		handle.resource = vmci_resource_find_id(handle.context,  in vmci_resource_add()
112 		if (handle.resource == VMCI_INVALID_ID) {  in vmci_resource_add()
121 	resource->handle = handle;  in vmci_resource_add()
122 	resource->type = resource_type;  in vmci_resource_add()
123 	INIT_HLIST_NODE(&resource->node);  in vmci_resource_add()
124 	kref_init(&resource->kref);  in vmci_resource_add()
125 	init_completion(&resource->done);  in vmci_resource_add()
127 	idx = vmci_resource_hash(resource->handle);  in vmci_resource_add()
128 	hlist_add_head_rcu(&resource->node, &vmci_resource_table.entries[idx]);  in vmci_resource_add()
137 void vmci_resource_remove(struct vmci_resource *resource)  in vmci_resource_remove()  argument
139 	struct vmci_handle handle = resource->handle;  in vmci_resource_remove()
143 	/* Remove resource from hash table. */  in vmci_resource_remove()
147 		if (vmci_handle_is_equal(r->handle, resource->handle) &&  in vmci_resource_remove()
148 		    resource->type == r->type) {  in vmci_resource_remove()
157 	vmci_resource_put(resource);  in vmci_resource_remove()
158 	wait_for_completion(&resource->done);  in vmci_resource_remove()
165 	struct vmci_resource *r, *resource = NULL;  in vmci_resource_by_handle()  local
173 		resource = vmci_resource_get(r);  in vmci_resource_by_handle()
178 	return resource;  in vmci_resource_by_handle()
182  * Get a reference to given resource.
184 struct vmci_resource *vmci_resource_get(struct vmci_resource *resource)  in vmci_resource_get()  argument
186 	kref_get(&resource->kref);  in vmci_resource_get()
188 	return resource;  in vmci_resource_get()
193 	struct vmci_resource *resource =  in vmci_release_resource()  local
196 	/* Verify the resource has been unlinked from hash table */  in vmci_release_resource()
197 	WARN_ON(!hlist_unhashed(&resource->node));  in vmci_release_resource()
199 	/* Signal that container of this resource can now be destroyed */  in vmci_release_resource()
200 	complete(&resource->done);  in vmci_release_resource()
204  * Resource's release function will get called if last reference.
206  * can increment the count again (it's gone from the resource hash
209 int vmci_resource_put(struct vmci_resource *resource)  in vmci_resource_put()  argument
215 	return kref_put(&resource->kref, vmci_release_resource) ?  in vmci_resource_put()
219 struct vmci_handle vmci_resource_handle(struct vmci_resource *resource)  in vmci_resource_handle()  argument
221 	return resource->handle;  in vmci_resource_handle()