Lines Matching full:devlink
9 #include <trace/events/devlink.h>
19 static struct devlink *devlinks_xa_get(unsigned long index)
21 struct devlink *devlink;
24 devlink = xa_find(&devlinks, &index, index, DEVLINK_REGISTERED);
25 if (!devlink || !devlink_try_get(devlink))
26 devlink = NULL;
28 return devlink;
32 * devlink object and related nested devlink instance.
70 struct devlink *__must_check devlink_nested_in_get_lock(struct devlink *devlink)
72 devl_assert_locked(devlink);
73 if (!devlink->rel)
75 devlink = devlinks_xa_get(devlink->rel->nested_in.devlink_index);
76 if (!devlink)
78 devl_lock(devlink);
79 if (devl_is_registered(devlink))
80 return devlink;
81 devl_unlock(devlink);
82 devlink_put(devlink);
90 struct devlink *devlink;
92 devlink = devlinks_xa_get(rel->nested_in.devlink_index);
93 if (!devlink)
95 if (!devl_trylock(devlink)) {
96 devlink_put(devlink);
99 if (!devl_is_registered(devlink)) {
100 devl_unlock(devlink);
101 devlink_put(devlink);
105 rel->nested_in.cleanup_cb(devlink, rel->nested_in.obj_index, rel->index);
106 rel->nested_in.notify_cb(devlink, rel->nested_in.obj_index);
107 devl_unlock(devlink);
108 devlink_put(devlink);
153 static void devlink_rel_put(struct devlink *devlink)
155 struct devlink_rel *rel = devlink->rel;
162 devlink->rel = NULL;
173 struct devlink *devlink)
177 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
182 rel->devlink_index = devlink->index;
189 devlink->rel = rel;
194 * devlink_rel_nested_in_notify - Notify the object this devlink
196 * @devlink: devlink
198 * This is called upon network namespace change of devlink instance.
199 * In case this devlink instance is nested in another devlink object,
201 * over netlink. The parent devlink instance lock needs to be
205 void devlink_rel_nested_in_notify(struct devlink *devlink)
207 struct devlink_rel *rel = devlink->rel;
220 static struct devlink *devlink_rel_devlink_get(u32 rel_index)
237 int devlink_rel_devlink_handle_put(struct sk_buff *msg, struct devlink *devlink,
241 struct net *net = devlink_net(devlink);
242 struct devlink *rel_devlink;
255 void *devlink_priv(struct devlink *devlink)
257 return &devlink->priv;
261 struct devlink *priv_to_devlink(void *priv)
263 return container_of(priv, struct devlink, priv);
267 struct device *devlink_to_dev(const struct devlink *devlink)
269 return devlink->dev;
273 const char *devlink_bus_name(const struct devlink *devlink)
275 return devlink->dev ? devlink->dev->bus->name : DEVLINK_INDEX_BUS_NAME;
279 const char *devlink_dev_name(const struct devlink *devlink)
281 return devlink->dev ? dev_name(devlink->dev) : devlink->dev_name_index;
285 const char *devlink_dev_driver_name(const struct devlink *devlink)
287 return devlink->dev_driver->name;
291 struct net *devlink_net(const struct devlink *devlink)
293 return read_pnet(&devlink->_net);
297 void devl_assert_locked(struct devlink *devlink)
299 lockdep_assert_held(&devlink->lock);
305 bool devl_lock_is_held(struct devlink *devlink)
307 return lockdep_is_held(&devlink->lock);
312 void devl_lock(struct devlink *devlink)
314 mutex_lock(&devlink->lock);
318 int devl_trylock(struct devlink *devlink)
320 return mutex_trylock(&devlink->lock);
324 void devl_unlock(struct devlink *devlink)
326 mutex_unlock(&devlink->lock);
331 * devlink_try_get() - try to obtain a reference on a devlink instance
332 * @devlink: instance to reference
334 * Obtain a reference on a devlink instance. A reference on a devlink instance
339 struct devlink *__must_check devlink_try_get(struct devlink *devlink)
341 if (refcount_inc_not_zero(&devlink->refcount))
342 return devlink;
348 struct devlink *devlink;
350 devlink = container_of(to_rcu_work(work), struct devlink, rwork);
352 mutex_destroy(&devlink->lock);
353 lockdep_unregister_key(&devlink->lock_key);
354 if (devlink->dev)
355 put_device(devlink->dev);
357 kfree(devlink->dev_name_index);
358 kvfree(devlink);
361 void devlink_put(struct devlink *devlink)
363 if (refcount_dec_and_test(&devlink->refcount))
364 queue_rcu_work(system_percpu_wq, &devlink->rwork);
367 static struct devlink *__devlinks_xa_find_get(struct net *net,
371 struct devlink *devlink = NULL;
375 devlink = xa_find(&devlinks, indexp, end, DEVLINK_REGISTERED);
376 if (!devlink)
379 if (!devlink_try_get(devlink))
381 if (!net_eq(devlink_net(devlink), net)) {
382 devlink_put(devlink);
387 return devlink;
394 struct devlink *devlinks_xa_find_get(struct net *net, unsigned long *indexp)
399 struct devlink *devlinks_xa_lookup_get(struct net *net, unsigned long index)
405 * devl_register - Register devlink instance
406 * @devlink: devlink
408 int devl_register(struct devlink *devlink)
410 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
411 devl_assert_locked(devlink);
413 xa_set_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
414 devlink_notify_register(devlink);
415 devlink_rel_nested_in_notify(devlink);
421 void devlink_register(struct devlink *devlink)
423 devl_lock(devlink);
424 devl_register(devlink);
425 devl_unlock(devlink);
430 * devl_unregister - Unregister devlink instance
431 * @devlink: devlink
433 void devl_unregister(struct devlink *devlink)
435 ASSERT_DEVLINK_REGISTERED(devlink);
436 devl_assert_locked(devlink);
438 devlink_notify_unregister(devlink);
439 xa_clear_mark(&devlinks, devlink->index, DEVLINK_REGISTERED);
440 devlink_rel_put(devlink);
444 void devlink_unregister(struct devlink *devlink)
446 devl_lock(devlink);
447 devl_unregister(devlink);
448 devl_unlock(devlink);
452 struct devlink *__devlink_alloc(const struct devlink_ops *ops, size_t priv_size,
456 struct devlink *devlink;
464 devlink = kvzalloc_flex(*devlink, priv, priv_size);
465 if (!devlink)
468 ret = xa_alloc_cyclic(&devlinks, &devlink->index, devlink, xa_limit_31b,
474 devlink->dev = get_device(dev);
476 devlink->dev_name_index = kasprintf(GFP_KERNEL, "%u", devlink->index);
477 if (!devlink->dev_name_index)
481 devlink->ops = ops;
482 devlink->dev_driver = dev_driver;
483 xa_init_flags(&devlink->ports, XA_FLAGS_ALLOC);
484 xa_init_flags(&devlink->params, XA_FLAGS_ALLOC);
485 xa_init_flags(&devlink->snapshot_ids, XA_FLAGS_ALLOC);
486 xa_init_flags(&devlink->nested_rels, XA_FLAGS_ALLOC);
487 write_pnet(&devlink->_net, net);
488 INIT_LIST_HEAD(&devlink->rate_list);
489 INIT_LIST_HEAD(&devlink->linecard_list);
490 INIT_LIST_HEAD(&devlink->sb_list);
491 INIT_LIST_HEAD_RCU(&devlink->dpipe_table_list);
492 INIT_LIST_HEAD(&devlink->resource_list);
493 INIT_LIST_HEAD(&devlink->region_list);
494 INIT_LIST_HEAD(&devlink->reporter_list);
495 INIT_LIST_HEAD(&devlink->trap_list);
496 INIT_LIST_HEAD(&devlink->trap_group_list);
497 INIT_LIST_HEAD(&devlink->trap_policer_list);
498 INIT_RCU_WORK(&devlink->rwork, devlink_release);
499 lockdep_register_key(&devlink->lock_key);
500 mutex_init(&devlink->lock);
501 lockdep_set_class(&devlink->lock, &devlink->lock_key);
502 refcount_set(&devlink->refcount, 1);
504 return devlink;
507 xa_erase(&devlinks, devlink->index);
509 kvfree(devlink);
514 * devlink_alloc_ns - Allocate new devlink instance resources
522 * Allocate new devlink instance resources, including devlink index
525 struct devlink *devlink_alloc_ns(const struct devlink_ops *ops,
535 * devlink_free - Free devlink instance resources
537 * @devlink: devlink
539 void devlink_free(struct devlink *devlink)
541 ASSERT_DEVLINK_NOT_REGISTERED(devlink);
543 devl_lock(devlink);
544 WARN_ON(devlink_rates_check(devlink, NULL, NULL));
545 devl_unlock(devlink);
546 devlink_rel_put(devlink);
548 WARN_ON(!list_empty(&devlink->trap_policer_list));
549 WARN_ON(!list_empty(&devlink->trap_group_list));
550 WARN_ON(!list_empty(&devlink->trap_list));
551 WARN_ON(!list_empty(&devlink->reporter_list));
552 WARN_ON(!list_empty(&devlink->region_list));
553 WARN_ON(!list_empty(&devlink->resource_list));
554 WARN_ON(!list_empty(&devlink->dpipe_table_list));
555 WARN_ON(!list_empty(&devlink->sb_list));
556 WARN_ON(!list_empty(&devlink->linecard_list));
557 WARN_ON(!xa_empty(&devlink->ports));
559 xa_destroy(&devlink->nested_rels);
560 xa_destroy(&devlink->snapshot_ids);
561 xa_destroy(&devlink->params);
562 xa_destroy(&devlink->ports);
564 xa_erase(&devlinks, devlink->index);
566 devlink_put(devlink);
572 struct devlink *devlink;
578 * all devlink instances from this namespace into init_net.
580 devlinks_xa_for_each_registered_get(net, index, devlink) {
581 devl_dev_lock(devlink, true);
583 if (devl_is_registered(devlink))
584 err = devlink_reload(devlink, &init_net,
588 if (err && net_eq(devlink_net(devlink), net))
589 devlink_reload_netns_change(devlink, net, &init_net);
590 devl_dev_unlock(devlink, true);
591 devlink_put(devlink);
593 pr_warn("Failed to reload devlink instance into init_net\n");