37  * Return 0 on success. If counter mode wasn't changed then it is considered
78 static void auto_mode_init_counter(struct rdma_counter *counter,  in auto_mode_init_counter()  argument
82 	struct auto_mode_param *param = &counter->mode.param;  in auto_mode_init_counter()
84 	counter->mode.mode = RDMA_COUNTER_MODE_AUTO;  in auto_mode_init_counter()
85 	counter->mode.mask = new_mask;  in auto_mode_init_counter()
91 static int __rdma_counter_bind_qp(struct rdma_counter *counter,  in __rdma_counter_bind_qp()  argument
96 	if (qp->counter)  in __rdma_counter_bind_qp()
102 	mutex_lock(&counter->lock);  in __rdma_counter_bind_qp()
103 	ret = qp->device->ops.counter_bind_qp(counter, qp);  in __rdma_counter_bind_qp()
104 	mutex_unlock(&counter->lock);  in __rdma_counter_bind_qp()
114 	struct rdma_counter *counter;  in alloc_and_bind()  local
120 	counter = kzalloc(sizeof(*counter), GFP_KERNEL);  in alloc_and_bind()
121 	if (!counter)  in alloc_and_bind()
124 	counter->device    = dev;  in alloc_and_bind()
125 	counter->port      = port;  in alloc_and_bind()
127 	rdma_restrack_new(&counter->res, RDMA_RESTRACK_COUNTER);  in alloc_and_bind()
128 	counter->stats = dev->ops.counter_alloc_stats(counter);  in alloc_and_bind()
129 	if (!counter->stats)  in alloc_and_bind()
144 		auto_mode_init_counter(counter, qp, port_counter->mode.mask);  in alloc_and_bind()
155 	counter->mode.mode = mode;  in alloc_and_bind()
156 	kref_init(&counter->kref);  in alloc_and_bind()
157 	mutex_init(&counter->lock);  in alloc_and_bind()
159 	ret = __rdma_counter_bind_qp(counter, qp);  in alloc_and_bind()
163 	rdma_restrack_parent_name(&counter->res, &qp->res);  in alloc_and_bind()
164 	rdma_restrack_add(&counter->res);  in alloc_and_bind()
165 	return counter;  in alloc_and_bind()
168 	kfree(counter->stats);  in alloc_and_bind()
170 	rdma_restrack_put(&counter->res);  in alloc_and_bind()
171 	kfree(counter);  in alloc_and_bind()
175 static void rdma_counter_free(struct rdma_counter *counter)  in rdma_counter_free()  argument
179 	port_counter = &counter->device->port_data[counter->port].port_counter;  in rdma_counter_free()
188 	rdma_restrack_del(&counter->res);  in rdma_counter_free()
189 	kfree(counter->stats);  in rdma_counter_free()
190 	kfree(counter);  in rdma_counter_free()
193 static bool auto_mode_match(struct ib_qp *qp, struct rdma_counter *counter,  in auto_mode_match()  argument
196 	struct auto_mode_param *param = &counter->mode.param;  in auto_mode_match()
203 		match &= (task_pid_nr(counter->res.task) ==  in auto_mode_match()
211 	struct rdma_counter *counter = qp->counter;  in __rdma_counter_unbind_qp()  local
217 	mutex_lock(&counter->lock);  in __rdma_counter_unbind_qp()
219 	mutex_unlock(&counter->lock);  in __rdma_counter_unbind_qp()
224 static void counter_history_stat_update(struct rdma_counter *counter)  in counter_history_stat_update()  argument
226 	struct ib_device *dev = counter->device;  in counter_history_stat_update()
230 	port_counter = &dev->port_data[counter->port].port_counter;  in counter_history_stat_update()
234 	rdma_counter_query_stats(counter);  in counter_history_stat_update()
236 	for (i = 0; i < counter->stats->num_counters; i++)  in counter_history_stat_update()
237 		port_counter->hstats->value[i] += counter->stats->value[i];  in counter_history_stat_update()
241  * rdma_get_counter_auto_mode - Find the counter that @qp should be bound
244  * Return: The counter (with ref-count increased) if found
250 	struct rdma_counter *counter = NULL;  in rdma_get_counter_auto_mode()  local
260 		counter = container_of(res, struct rdma_counter, res);  in rdma_get_counter_auto_mode()
261 		if ((counter->device != qp->device) || (counter->port != port))  in rdma_get_counter_auto_mode()
264 		if (auto_mode_match(qp, counter, port_counter->mode.mask))  in rdma_get_counter_auto_mode()
267 		counter = NULL;  in rdma_get_counter_auto_mode()
270 	if (counter && !kref_get_unless_zero(&counter->kref))  in rdma_get_counter_auto_mode()
271 		counter = NULL;  in rdma_get_counter_auto_mode()
274 	return counter;  in rdma_get_counter_auto_mode()
279 	struct rdma_counter *counter;  in counter_release()  local
281 	counter = container_of(kref, struct rdma_counter, kref);  in counter_release()
282 	counter_history_stat_update(counter);  in counter_release()
283 	counter->device->ops.counter_dealloc(counter);  in counter_release()
284 	rdma_counter_free(counter);  in counter_release()
288  * rdma_counter_bind_qp_auto - Check and bind the QP to a counter base on
295 	struct rdma_counter *counter;  in rdma_counter_bind_qp_auto()  local
308 	counter = rdma_get_counter_auto_mode(qp, port);  in rdma_counter_bind_qp_auto()
309 	if (counter) {  in rdma_counter_bind_qp_auto()
310 		ret = __rdma_counter_bind_qp(counter, qp);  in rdma_counter_bind_qp_auto()
312 			kref_put(&counter->kref, counter_release);  in rdma_counter_bind_qp_auto()
316 		counter = alloc_and_bind(dev, port, qp, RDMA_COUNTER_MODE_AUTO);  in rdma_counter_bind_qp_auto()
317 		if (!counter)  in rdma_counter_bind_qp_auto()
325  * rdma_counter_unbind_qp - Unbind a qp from a counter
327  *   true - Decrease the counter ref-count anyway (e.g., qp destroy)
331 	struct rdma_counter *counter = qp->counter;  in rdma_counter_unbind_qp()  local
334 	if (!counter)  in rdma_counter_unbind_qp()
341 	kref_put(&counter->kref, counter_release);  in rdma_counter_unbind_qp()
345 int rdma_counter_query_stats(struct rdma_counter *counter)  in rdma_counter_query_stats()  argument
347 	struct ib_device *dev = counter->device;  in rdma_counter_query_stats()
353 	mutex_lock(&counter->lock);  in rdma_counter_query_stats()
354 	ret = dev->ops.counter_update_stats(counter);  in rdma_counter_query_stats()
355 	mutex_unlock(&counter->lock);  in rdma_counter_query_stats()
365 	struct rdma_counter *counter;  in get_running_counters_hwstat_sum()  local
377 		counter = container_of(res, struct rdma_counter, res);  in get_running_counters_hwstat_sum()
378 		if ((counter->device != dev) || (counter->port != port) ||  in get_running_counters_hwstat_sum()
379 		    rdma_counter_query_stats(counter))  in get_running_counters_hwstat_sum()
382 		sum += counter->stats->value[index];  in get_running_counters_hwstat_sum()
436 	struct rdma_counter *counter;  in rdma_get_counter_by_id()  local
442 	counter = container_of(res, struct rdma_counter, res);  in rdma_get_counter_by_id()
443 	kref_get(&counter->kref);  in rdma_get_counter_by_id()
446 	return counter;  in rdma_get_counter_by_id()
450  * rdma_counter_bind_qpn() - Bind QP @qp_num to counter @counter_id
456 	struct rdma_counter *counter;  in rdma_counter_bind_qpn()  local
468 	counter = rdma_get_counter_by_id(dev, counter_id);  in rdma_counter_bind_qpn()
469 	if (!counter) {  in rdma_counter_bind_qpn()
474 	if (rdma_is_kernel_res(&counter->res) != rdma_is_kernel_res(&qp->res)) {  in rdma_counter_bind_qpn()
479 	if ((counter->device != qp->device) || (counter->port != qp->port)) {  in rdma_counter_bind_qpn()
484 	ret = __rdma_counter_bind_qp(counter, qp);  in rdma_counter_bind_qpn()
492 	kref_put(&counter->kref, counter_release);  in rdma_counter_bind_qpn()
499  * rdma_counter_bind_qpn_alloc() - Alloc a counter and bind QP @qp_num to it
500  *   The id of new counter is returned in @counter_id
506 	struct rdma_counter *counter;  in rdma_counter_bind_qpn_alloc()  local
529 	counter = alloc_and_bind(dev, port, qp, RDMA_COUNTER_MODE_MANUAL);  in rdma_counter_bind_qpn_alloc()
530 	if (!counter) {  in rdma_counter_bind_qpn_alloc()
536 		*counter_id = counter->id;  in rdma_counter_bind_qpn_alloc()
547  * rdma_counter_unbind_qpn() - Unbind QP @qp_num from a counter
569 	if (!qp->counter || qp->counter->id != counter_id ||  in rdma_counter_unbind_qpn()