133 static void netconsole_target_get(struct netconsole_target *nt)  in netconsole_target_get()  argument
135 	if (config_item_name(&nt->item))  in netconsole_target_get()
136 		config_item_get(&nt->item);  in netconsole_target_get()
139 static void netconsole_target_put(struct netconsole_target *nt)  in netconsole_target_put()  argument
141 	if (config_item_name(&nt->item))  in netconsole_target_put()
142 		config_item_put(&nt->item);  in netconsole_target_put()
160 static void netconsole_target_get(struct netconsole_target *nt)  in netconsole_target_get()  argument
164 static void netconsole_target_put(struct netconsole_target *nt)  in netconsole_target_put()  argument
174 	struct netconsole_target *nt;  in alloc_param_target()  local
180 	nt = kzalloc(sizeof(*nt), GFP_KERNEL);  in alloc_param_target()
181 	if (!nt)  in alloc_param_target()
184 	nt->np.name = "netconsole";  in alloc_param_target()
185 	strlcpy(nt->np.dev_name, "eth0", IFNAMSIZ);  in alloc_param_target()
186 	nt->np.local_port = 6665;  in alloc_param_target()
187 	nt->np.remote_port = 6666;  in alloc_param_target()
188 	mutex_init(&nt->mutex);  in alloc_param_target()
189 	eth_broadcast_addr(nt->np.remote_mac);  in alloc_param_target()
192 	err = netpoll_parse_options(&nt->np, target_config);  in alloc_param_target()
196 	err = netpoll_setup(&nt->np);  in alloc_param_target()
200 	nt->enabled = 1;  in alloc_param_target()
202 	return nt;  in alloc_param_target()
205 	kfree(nt);  in alloc_param_target()
210 static void free_param_target(struct netconsole_target *nt)  in free_param_target()  argument
212 	netpoll_cleanup(&nt->np);  in free_param_target()
213 	kfree(nt);  in free_param_target()
238 	ssize_t				(*show)(struct netconsole_target *nt,
240 	ssize_t				(*store)(struct netconsole_target *nt,
256 static ssize_t show_enabled(struct netconsole_target *nt, char *buf)  in show_enabled()  argument
258 	return snprintf(buf, PAGE_SIZE, "%d\n", nt->enabled);  in show_enabled()
261 static ssize_t show_dev_name(struct netconsole_target *nt, char *buf)  in show_dev_name()  argument
263 	return snprintf(buf, PAGE_SIZE, "%s\n", nt->np.dev_name);  in show_dev_name()
266 static ssize_t show_local_port(struct netconsole_target *nt, char *buf)  in show_local_port()  argument
268 	return snprintf(buf, PAGE_SIZE, "%d\n", nt->np.local_port);  in show_local_port()
271 static ssize_t show_remote_port(struct netconsole_target *nt, char *buf)  in show_remote_port()  argument
273 	return snprintf(buf, PAGE_SIZE, "%d\n", nt->np.remote_port);  in show_remote_port()
276 static ssize_t show_local_ip(struct netconsole_target *nt, char *buf)  in show_local_ip()  argument
278 	if (nt->np.ipv6)  in show_local_ip()
279 		return snprintf(buf, PAGE_SIZE, "%pI6c\n", &nt->np.local_ip.in6);  in show_local_ip()
281 		return snprintf(buf, PAGE_SIZE, "%pI4\n", &nt->np.local_ip);  in show_local_ip()
284 static ssize_t show_remote_ip(struct netconsole_target *nt, char *buf)  in show_remote_ip()  argument
286 	if (nt->np.ipv6)  in show_remote_ip()
287 		return snprintf(buf, PAGE_SIZE, "%pI6c\n", &nt->np.remote_ip.in6);  in show_remote_ip()
289 		return snprintf(buf, PAGE_SIZE, "%pI4\n", &nt->np.remote_ip);  in show_remote_ip()
292 static ssize_t show_local_mac(struct netconsole_target *nt, char *buf)  in show_local_mac()  argument
294 	struct net_device *dev = nt->np.dev;  in show_local_mac()
300 static ssize_t show_remote_mac(struct netconsole_target *nt, char *buf)  in show_remote_mac()  argument
302 	return snprintf(buf, PAGE_SIZE, "%pM\n", nt->np.remote_mac);  in show_remote_mac()
312 static ssize_t store_enabled(struct netconsole_target *nt,  in store_enabled()  argument
325 	if (enabled == nt->enabled) {  in store_enabled()
327 			nt->enabled ? "started" : "stopped");  in store_enabled()
336 		netpoll_print_options(&nt->np);  in store_enabled()
338 		err = netpoll_setup(&nt->np);  in store_enabled()
349 		nt->enabled = 0;  in store_enabled()
351 		netpoll_cleanup(&nt->np);  in store_enabled()
354 	nt->enabled = enabled;  in store_enabled()
359 static ssize_t store_dev_name(struct netconsole_target *nt,  in store_dev_name()  argument
365 	if (nt->enabled) {  in store_dev_name()
367 		       config_item_name(&nt->item));  in store_dev_name()
371 	strlcpy(nt->np.dev_name, buf, IFNAMSIZ);  in store_dev_name()
374 	len = strnlen(nt->np.dev_name, IFNAMSIZ);  in store_dev_name()
375 	if (nt->np.dev_name[len - 1] == '\n')  in store_dev_name()
376 		nt->np.dev_name[len - 1] = '\0';  in store_dev_name()
381 static ssize_t store_local_port(struct netconsole_target *nt,  in store_local_port()  argument
387 	if (nt->enabled) {  in store_local_port()
389 		       config_item_name(&nt->item));  in store_local_port()
393 	rv = kstrtou16(buf, 10, &nt->np.local_port);  in store_local_port()
399 static ssize_t store_remote_port(struct netconsole_target *nt,  in store_remote_port()  argument
405 	if (nt->enabled) {  in store_remote_port()
407 		       config_item_name(&nt->item));  in store_remote_port()
411 	rv = kstrtou16(buf, 10, &nt->np.remote_port);  in store_remote_port()
417 static ssize_t store_local_ip(struct netconsole_target *nt,  in store_local_ip()  argument
421 	if (nt->enabled) {  in store_local_ip()
423 		       config_item_name(&nt->item));  in store_local_ip()
429 		if (in6_pton(buf, count, nt->np.local_ip.in6.s6_addr, -1, &end) > 0) {  in store_local_ip()
434 			nt->np.ipv6 = true;  in store_local_ip()
438 		if (!nt->np.ipv6) {  in store_local_ip()
439 			nt->np.local_ip.ip = in_aton(buf);  in store_local_ip()
447 static ssize_t store_remote_ip(struct netconsole_target *nt,  in store_remote_ip()  argument
451 	if (nt->enabled) {  in store_remote_ip()
453 		       config_item_name(&nt->item));  in store_remote_ip()
459 		if (in6_pton(buf, count, nt->np.remote_ip.in6.s6_addr, -1, &end) > 0) {  in store_remote_ip()
464 			nt->np.ipv6 = true;  in store_remote_ip()
468 		if (!nt->np.ipv6) {  in store_remote_ip()
469 			nt->np.remote_ip.ip = in_aton(buf);  in store_remote_ip()
477 static ssize_t store_remote_mac(struct netconsole_target *nt,  in store_remote_mac()  argument
483 	if (nt->enabled) {  in store_remote_mac()
485 		       config_item_name(&nt->item));  in store_remote_mac()
493 	memcpy(nt->np.remote_mac, remote_mac, ETH_ALEN);  in store_remote_mac()
545 	struct netconsole_target *nt = to_target(item);  in netconsole_target_attr_show()  local
550 		ret = na->show(nt, buf);  in netconsole_target_attr_show()
561 	struct netconsole_target *nt = to_target(item);  in netconsole_target_attr_store()  local
565 	mutex_lock(&nt->mutex);  in netconsole_target_attr_store()
567 		ret = na->store(nt, buf, count);  in netconsole_target_attr_store()
568 	mutex_unlock(&nt->mutex);  in netconsole_target_attr_store()
593 	struct netconsole_target *nt;  in make_netconsole_target()  local
599 	nt = kzalloc(sizeof(*nt), GFP_KERNEL);  in make_netconsole_target()
600 	if (!nt)  in make_netconsole_target()
603 	nt->np.name = "netconsole";  in make_netconsole_target()
604 	strlcpy(nt->np.dev_name, "eth0", IFNAMSIZ);  in make_netconsole_target()
605 	nt->np.local_port = 6665;  in make_netconsole_target()
606 	nt->np.remote_port = 6666;  in make_netconsole_target()
607 	mutex_init(&nt->mutex);  in make_netconsole_target()
608 	eth_broadcast_addr(nt->np.remote_mac);  in make_netconsole_target()
611 	config_item_init_type_name(&nt->item, name, &netconsole_target_type);  in make_netconsole_target()
615 	list_add(&nt->list, &target_list);  in make_netconsole_target()
618 	return &nt->item;  in make_netconsole_target()
625 	struct netconsole_target *nt = to_target(item);  in drop_netconsole_target()  local
628 	list_del(&nt->list);  in drop_netconsole_target()
635 	if (nt->enabled)  in drop_netconsole_target()
636 		netpoll_cleanup(&nt->np);  in drop_netconsole_target()
638 	config_item_put(&nt->item);  in drop_netconsole_target()
668 	struct netconsole_target *nt;  in netconsole_netdev_event()  local
678 	list_for_each_entry(nt, &target_list, list) {  in netconsole_netdev_event()
679 		netconsole_target_get(nt);  in netconsole_netdev_event()
680 		if (nt->np.dev == dev) {  in netconsole_netdev_event()
683 				strlcpy(nt->np.dev_name, dev->name, IFNAMSIZ);  in netconsole_netdev_event()
693 				__netpoll_cleanup(&nt->np);  in netconsole_netdev_event()
696 				dev_put(nt->np.dev);  in netconsole_netdev_event()
697 				nt->np.dev = NULL;  in netconsole_netdev_event()
698 				nt->enabled = 0;  in netconsole_netdev_event()
700 				netconsole_target_put(nt);  in netconsole_netdev_event()
704 		netconsole_target_put(nt);  in netconsole_netdev_event()
736 	struct netconsole_target *nt;  in write_msg()  local
746 	list_for_each_entry(nt, &target_list, list) {  in write_msg()
747 		netconsole_target_get(nt);  in write_msg()
748 		if (nt->enabled && netif_running(nt->np.dev)) {  in write_msg()
758 				netpoll_send_udp(&nt->np, tmp, frag);  in write_msg()
763 		netconsole_target_put(nt);  in write_msg()
777 	struct netconsole_target *nt, *tmp;  in init_netconsole()  local
784 			nt = alloc_param_target(target_config);  in init_netconsole()
785 			if (IS_ERR(nt)) {  in init_netconsole()
786 				err = PTR_ERR(nt);  in init_netconsole()
793 			list_add(&nt->list, &target_list);  in init_netconsole()
822 	list_for_each_entry_safe(nt, tmp, &target_list, list) {  in init_netconsole()
823 		list_del(&nt->list);  in init_netconsole()
824 		free_param_target(nt);  in init_netconsole()
832 	struct netconsole_target *nt, *tmp;  in cleanup_netconsole()  local
846 	list_for_each_entry_safe(nt, tmp, &target_list, list) {  in cleanup_netconsole()
847 		list_del(&nt->list);  in cleanup_netconsole()
848 		free_param_target(nt);  in cleanup_netconsole()