1 // SPDX-License-Identifier: GPL-2.0
36 	/* this is the one that's exposed to the attributes */
45 	return pn->priv;  in stp_policy_node_priv()
54 	*mstart	= policy_node->first_master;  in stp_policy_node_get_ranges()
55 	*mend	= policy_node->last_master;  in stp_policy_node_get_ranges()
56 	*cstart	= policy_node->first_channel;  in stp_policy_node_get_ranges()
57 	*cend	= policy_node->last_channel;  in stp_policy_node_get_ranges()
90 	count = sprintf(page, "%u %u\n", policy_node->first_master,  in stp_policy_node_masters_show()
91 			policy_node->last_master);  in stp_policy_node_masters_show()
104 	ssize_t ret = -ENODEV;  in stp_policy_node_masters_store()
107 		return -EINVAL;  in stp_policy_node_masters_store()
110 	stm = policy_node->policy->stm;  in stp_policy_node_masters_store()
115 	if (first > last || first < stm->data->sw_start ||  in stp_policy_node_masters_store()
116 	    last > stm->data->sw_end) {  in stp_policy_node_masters_store()
117 		ret = -ERANGE;  in stp_policy_node_masters_store()
122 	policy_node->first_master = first;  in stp_policy_node_masters_store()
123 	policy_node->last_master = last;  in stp_policy_node_masters_store()
137 	count = sprintf(page, "%u %u\n", policy_node->first_channel,  in stp_policy_node_channels_show()
138 			policy_node->last_channel);  in stp_policy_node_channels_show()
151 	ssize_t ret = -ENODEV;  in stp_policy_node_channels_store()
154 		return -EINVAL;  in stp_policy_node_channels_store()
157 	stm = policy_node->policy->stm;  in stp_policy_node_channels_store()
162 	    last >= stm->data->sw_nchannels) {  in stp_policy_node_channels_store()
163 		ret = -ERANGE;  in stp_policy_node_channels_store()
168 	policy_node->first_channel = first;  in stp_policy_node_channels_store()
169 	policy_node->last_channel = last;  in stp_policy_node_channels_store()
204 	struct configfs_attribute **merged;  in get_policy_node_type()  local
211 	merged = memcat_p(stp_policy_node_attrs, attrs);  in get_policy_node_type()
212 	if (!merged) {  in get_policy_node_type()
217 	type->ct_attrs = merged;  in get_policy_node_type()
230 	if (group->cg_item.ci_type == &stp_policy_type) {  in stp_policy_node_make()
235 		policy = parent_node->policy;  in stp_policy_node_make()
238 	if (!policy->stm)  in stp_policy_node_make()
239 		return ERR_PTR(-ENODEV);  in stp_policy_node_make()
241 	pdrv = policy->stm->pdrv;  in stp_policy_node_make()
243 		kzalloc(offsetof(struct stp_policy_node, priv[pdrv->priv_sz]),  in stp_policy_node_make()
246 		return ERR_PTR(-ENOMEM);  in stp_policy_node_make()
248 	if (pdrv->policy_node_init)  in stp_policy_node_make()
249 		pdrv->policy_node_init((void *)policy_node->priv);  in stp_policy_node_make()
251 	if (policy->stm->pdrv_node_type)  in stp_policy_node_make()
252 		type = policy->stm->pdrv_node_type;  in stp_policy_node_make()
254 	config_group_init_type_name(&policy_node->group, name, type);  in stp_policy_node_make()
256 	policy_node->policy = policy;  in stp_policy_node_make()
259 	policy_node->first_master = policy->stm->data->sw_start;  in stp_policy_node_make()
260 	policy_node->last_master = policy->stm->data->sw_end;  in stp_policy_node_make()
261 	policy_node->first_channel = 0;  in stp_policy_node_make()
262 	policy_node->last_channel = policy->stm->data->sw_nchannels - 1;  in stp_policy_node_make()
264 	return &policy_node->group;  in stp_policy_node_make()
294 	count = sprintf(page, "%s\n",  in stp_policy_device_show()
295 			(policy && policy->stm) ?  in stp_policy_device_show()
296 			policy->stm->data->name :  in stp_policy_device_show()
310 	count = sprintf(page, "%s\n",  in stp_policy_protocol_show()
311 			(policy && policy->stm) ?  in stp_policy_protocol_show()
312 			policy->stm->pdrv->name :  in stp_policy_protocol_show()
328 	struct stm_device *stm = policy->stm;  in stp_policy_unbind()
335 	if (WARN_ON_ONCE(!policy->stm))  in stp_policy_unbind()
338 	lockdep_assert_held(&stm->policy_mutex);  in stp_policy_unbind()
340 	stm->policy = NULL;  in stp_policy_unbind()
341 	policy->stm = NULL;  in stp_policy_unbind()
346 	stm_put_protocol(stm->pdrv);  in stp_policy_unbind()
347 	stm->pdrv = NULL;  in stp_policy_unbind()
354 	struct stm_device *stm = policy->stm;  in stp_policy_release()
360 	mutex_lock(&stm->policy_mutex);  in stp_policy_release()
362 	mutex_unlock(&stm->policy_mutex);  in stp_policy_release()
392 	devname = kasprintf(GFP_KERNEL, "%s", name);  in stp_policy_make()
394 		return ERR_PTR(-ENOMEM);  in stp_policy_make()
406 		return ERR_PTR(-EINVAL);  in stp_policy_make()
423 		return ERR_PTR(-ENODEV);  in stp_policy_make()
431 		return ERR_PTR(-ENODEV);  in stp_policy_make()
434 	mutex_lock(&stm->policy_mutex);  in stp_policy_make()
435 	if (stm->policy) {  in stp_policy_make()
436 		ret = ERR_PTR(-EBUSY);  in stp_policy_make()
440 	stm->policy = kzalloc(sizeof(*stm->policy), GFP_KERNEL);  in stp_policy_make()
441 	if (!stm->policy) {  in stp_policy_make()
442 		ret = ERR_PTR(-ENOMEM);  in stp_policy_make()
446 	config_group_init_type_name(&stm->policy->group, name,  in stp_policy_make()
449 	stm->pdrv = pdrv;  in stp_policy_make()
450 	stm->pdrv_node_type = pdrv_node_type;  in stp_policy_make()
451 	stm->policy->stm = stm;  in stp_policy_make()
452 	ret = &stm->policy->group;  in stp_policy_make()
455 	mutex_unlock(&stm->policy_mutex);  in stp_policy_make()
459 		 * pdrv and stm->pdrv at this point can be quite different,  in stp_policy_make()
481 			.ci_namebuf	= "stp-policy",
491 __stp_policy_node_lookup(struct stp_policy *policy, char *s)  in __stp_policy_node_lookup()  argument
494 	struct list_head *head = &policy->group.cg_children;  in __stp_policy_node_lookup()
496 	char *start, *end = s;  in __stp_policy_node_lookup()
514 				    policy_node->group.cg_item.ci_name)) {  in __stp_policy_node_lookup()
520 				head = &policy_node->group.cg_children;  in __stp_policy_node_lookup()
533 stp_policy_node_lookup(struct stm_device *stm, char *s)  in stp_policy_node_lookup()  argument
539 	mutex_lock(&stm->policy_mutex);  in stp_policy_node_lookup()
540 	if (stm->policy)  in stp_policy_node_lookup()
541 		policy_node = __stp_policy_node_lookup(stm->policy, s);  in stp_policy_node_lookup()
542 	mutex_unlock(&stm->policy_mutex);  in stp_policy_node_lookup()
545 		config_item_get(&policy_node->group.cg_item);  in stp_policy_node_lookup()
557 	config_item_put(&policy_node->group.cg_item);  in stp_policy_node_put()