1 /* Copyright (C) 2010-2015 B.A.T.M.A.N. contributors:
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include <linux/atomic.h>
22 #include <linux/compiler.h>
23 #include <linux/device.h>
24 #include <linux/errno.h>
27 #include <linux/if_vlan.h>
28 #include <linux/kernel.h>
29 #include <linux/netdevice.h>
30 #include <linux/printk.h>
31 #include <linux/rculist.h>
32 #include <linux/rcupdate.h>
33 #include <linux/rtnetlink.h>
34 #include <linux/slab.h>
35 #include <linux/stat.h>
36 #include <linux/stddef.h>
37 #include <linux/string.h>
38 #include <linux/stringify.h>
40 #include "distributed-arp-table.h"
41 #include "gateway_client.h"
42 #include "gateway_common.h"
43 #include "hard-interface.h"
44 #include "network-coding.h"
46 #include "soft-interface.h"
48 static struct net_device *batadv_kobj_to_netdev(struct kobject *obj)
50 struct device *dev = container_of(obj->parent, struct device, kobj);
52 return to_net_dev(dev);
55 static struct batadv_priv *batadv_kobj_to_batpriv(struct kobject *obj)
57 struct net_device *net_dev = batadv_kobj_to_netdev(obj);
59 return netdev_priv(net_dev);
63 * batadv_vlan_kobj_to_batpriv - convert a vlan kobj in the associated batpriv
64 * @obj: kobject to covert
66 * Returns the associated batadv_priv struct.
68 static struct batadv_priv *batadv_vlan_kobj_to_batpriv(struct kobject *obj)
70 /* VLAN specific attributes are located in the root sysfs folder if they
71 * refer to the untagged VLAN..
73 if (!strcmp(BATADV_SYSFS_IF_MESH_SUBDIR, obj->name))
74 return batadv_kobj_to_batpriv(obj);
76 /* ..while the attributes for the tagged vlans are located in
77 * the in the corresponding "vlan%VID" subfolder
79 return batadv_kobj_to_batpriv(obj->parent);
83 * batadv_kobj_to_vlan - convert a kobj in the associated softif_vlan struct
84 * @obj: kobject to covert
86 * Returns the associated softif_vlan struct if found, NULL otherwise.
88 static struct batadv_softif_vlan *
89 batadv_kobj_to_vlan(struct batadv_priv *bat_priv, struct kobject *obj)
91 struct batadv_softif_vlan *vlan_tmp, *vlan = NULL;
94 hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) {
95 if (vlan_tmp->kobj != obj)
98 if (!atomic_inc_not_zero(&vlan_tmp->refcount))
109 #define BATADV_UEV_TYPE_VAR "BATTYPE="
110 #define BATADV_UEV_ACTION_VAR "BATACTION="
111 #define BATADV_UEV_DATA_VAR "BATDATA="
113 static char *batadv_uev_action_str[] = {
119 static char *batadv_uev_type_str[] = {
123 /* Use this, if you have customized show and store functions for vlan attrs */
124 #define BATADV_ATTR_VLAN(_name, _mode, _show, _store) \
125 struct batadv_attribute batadv_attr_vlan_##_name = { \
126 .attr = {.name = __stringify(_name), \
132 /* Use this, if you have customized show and store functions */
133 #define BATADV_ATTR(_name, _mode, _show, _store) \
134 struct batadv_attribute batadv_attr_##_name = { \
135 .attr = {.name = __stringify(_name), \
141 #define BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \
142 ssize_t batadv_store_##_name(struct kobject *kobj, \
143 struct attribute *attr, char *buff, \
146 struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
147 struct batadv_priv *bat_priv = netdev_priv(net_dev); \
149 return __batadv_store_bool_attr(buff, count, _post_func, attr, \
150 &bat_priv->_name, net_dev); \
153 #define BATADV_ATTR_SIF_SHOW_BOOL(_name) \
154 ssize_t batadv_show_##_name(struct kobject *kobj, \
155 struct attribute *attr, char *buff) \
157 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \
159 return sprintf(buff, "%s\n", \
160 atomic_read(&bat_priv->_name) == 0 ? \
161 "disabled" : "enabled"); \
164 /* Use this, if you are going to turn a [name] in the soft-interface
165 * (bat_priv) on or off
167 #define BATADV_ATTR_SIF_BOOL(_name, _mode, _post_func) \
168 static BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \
169 static BATADV_ATTR_SIF_SHOW_BOOL(_name) \
170 static BATADV_ATTR(_name, _mode, batadv_show_##_name, \
171 batadv_store_##_name)
173 #define BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func) \
174 ssize_t batadv_store_##_name(struct kobject *kobj, \
175 struct attribute *attr, char *buff, \
178 struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
179 struct batadv_priv *bat_priv = netdev_priv(net_dev); \
181 return __batadv_store_uint_attr(buff, count, _min, _max, \
183 &bat_priv->_var, net_dev); \
186 #define BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \
187 ssize_t batadv_show_##_name(struct kobject *kobj, \
188 struct attribute *attr, char *buff) \
190 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \
192 return sprintf(buff, "%i\n", atomic_read(&bat_priv->_var)); \
195 /* Use this, if you are going to set [name] in the soft-interface
196 * (bat_priv) to an unsigned integer value
198 #define BATADV_ATTR_SIF_UINT(_name, _var, _mode, _min, _max, _post_func)\
199 static BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func)\
200 static BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \
201 static BATADV_ATTR(_name, _mode, batadv_show_##_name, \
202 batadv_store_##_name)
204 #define BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \
205 ssize_t batadv_store_vlan_##_name(struct kobject *kobj, \
206 struct attribute *attr, char *buff, \
209 struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\
210 struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \
212 size_t res = __batadv_store_bool_attr(buff, count, _post_func, \
213 attr, &vlan->_name, \
214 bat_priv->soft_iface); \
216 batadv_softif_vlan_free_ref(vlan); \
220 #define BATADV_ATTR_VLAN_SHOW_BOOL(_name) \
221 ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \
222 struct attribute *attr, char *buff) \
224 struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\
225 struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \
227 size_t res = sprintf(buff, "%s\n", \
228 atomic_read(&vlan->_name) == 0 ? \
229 "disabled" : "enabled"); \
231 batadv_softif_vlan_free_ref(vlan); \
235 /* Use this, if you are going to turn a [name] in the vlan struct on or off */
236 #define BATADV_ATTR_VLAN_BOOL(_name, _mode, _post_func) \
237 static BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \
238 static BATADV_ATTR_VLAN_SHOW_BOOL(_name) \
239 static BATADV_ATTR_VLAN(_name, _mode, batadv_show_vlan_##_name, \
240 batadv_store_vlan_##_name)
242 static int batadv_store_bool_attr(char *buff, size_t count,
243 struct net_device *net_dev,
244 const char *attr_name, atomic_t *attr)
248 if (buff[count - 1] == '\n')
249 buff[count - 1] = '\0';
251 if ((strncmp(buff, "1", 2) == 0) ||
252 (strncmp(buff, "enable", 7) == 0) ||
253 (strncmp(buff, "enabled", 8) == 0))
256 if ((strncmp(buff, "0", 2) == 0) ||
257 (strncmp(buff, "disable", 8) == 0) ||
258 (strncmp(buff, "disabled", 9) == 0))
262 batadv_info(net_dev, "%s: Invalid parameter received: %s\n",
267 if (atomic_read(attr) == enabled)
270 batadv_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name,
271 atomic_read(attr) == 1 ? "enabled" : "disabled",
272 enabled == 1 ? "enabled" : "disabled");
274 atomic_set(attr, (unsigned int)enabled);
278 static inline ssize_t
279 __batadv_store_bool_attr(char *buff, size_t count,
280 void (*post_func)(struct net_device *),
281 struct attribute *attr,
282 atomic_t *attr_store, struct net_device *net_dev)
286 ret = batadv_store_bool_attr(buff, count, net_dev, attr->name,
288 if (post_func && ret)
294 static int batadv_store_uint_attr(const char *buff, size_t count,
295 struct net_device *net_dev,
296 const char *attr_name,
297 unsigned int min, unsigned int max,
300 unsigned long uint_val;
303 ret = kstrtoul(buff, 10, &uint_val);
305 batadv_info(net_dev, "%s: Invalid parameter received: %s\n",
310 if (uint_val < min) {
311 batadv_info(net_dev, "%s: Value is too small: %lu min: %u\n",
312 attr_name, uint_val, min);
316 if (uint_val > max) {
317 batadv_info(net_dev, "%s: Value is too big: %lu max: %u\n",
318 attr_name, uint_val, max);
322 if (atomic_read(attr) == uint_val)
325 batadv_info(net_dev, "%s: Changing from: %i to: %lu\n",
326 attr_name, atomic_read(attr), uint_val);
328 atomic_set(attr, uint_val);
332 static inline ssize_t
333 __batadv_store_uint_attr(const char *buff, size_t count,
335 void (*post_func)(struct net_device *),
336 const struct attribute *attr,
337 atomic_t *attr_store, struct net_device *net_dev)
341 ret = batadv_store_uint_attr(buff, count, net_dev, attr->name, min, max,
343 if (post_func && ret)
349 static ssize_t batadv_show_bat_algo(struct kobject *kobj,
350 struct attribute *attr, char *buff)
352 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
354 return sprintf(buff, "%s\n", bat_priv->bat_algo_ops->name);
357 static void batadv_post_gw_reselect(struct net_device *net_dev)
359 struct batadv_priv *bat_priv = netdev_priv(net_dev);
361 batadv_gw_reselect(bat_priv);
364 static ssize_t batadv_show_gw_mode(struct kobject *kobj, struct attribute *attr,
367 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
370 switch (atomic_read(&bat_priv->gw_mode)) {
371 case BATADV_GW_MODE_CLIENT:
372 bytes_written = sprintf(buff, "%s\n",
373 BATADV_GW_MODE_CLIENT_NAME);
375 case BATADV_GW_MODE_SERVER:
376 bytes_written = sprintf(buff, "%s\n",
377 BATADV_GW_MODE_SERVER_NAME);
380 bytes_written = sprintf(buff, "%s\n",
381 BATADV_GW_MODE_OFF_NAME);
385 return bytes_written;
388 static ssize_t batadv_store_gw_mode(struct kobject *kobj,
389 struct attribute *attr, char *buff,
392 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
393 struct batadv_priv *bat_priv = netdev_priv(net_dev);
394 char *curr_gw_mode_str;
395 int gw_mode_tmp = -1;
397 if (buff[count - 1] == '\n')
398 buff[count - 1] = '\0';
400 if (strncmp(buff, BATADV_GW_MODE_OFF_NAME,
401 strlen(BATADV_GW_MODE_OFF_NAME)) == 0)
402 gw_mode_tmp = BATADV_GW_MODE_OFF;
404 if (strncmp(buff, BATADV_GW_MODE_CLIENT_NAME,
405 strlen(BATADV_GW_MODE_CLIENT_NAME)) == 0)
406 gw_mode_tmp = BATADV_GW_MODE_CLIENT;
408 if (strncmp(buff, BATADV_GW_MODE_SERVER_NAME,
409 strlen(BATADV_GW_MODE_SERVER_NAME)) == 0)
410 gw_mode_tmp = BATADV_GW_MODE_SERVER;
412 if (gw_mode_tmp < 0) {
414 "Invalid parameter for 'gw mode' setting received: %s\n",
419 if (atomic_read(&bat_priv->gw_mode) == gw_mode_tmp)
422 switch (atomic_read(&bat_priv->gw_mode)) {
423 case BATADV_GW_MODE_CLIENT:
424 curr_gw_mode_str = BATADV_GW_MODE_CLIENT_NAME;
426 case BATADV_GW_MODE_SERVER:
427 curr_gw_mode_str = BATADV_GW_MODE_SERVER_NAME;
430 curr_gw_mode_str = BATADV_GW_MODE_OFF_NAME;
434 batadv_info(net_dev, "Changing gw mode from: %s to: %s\n",
435 curr_gw_mode_str, buff);
437 /* Invoking batadv_gw_reselect() is not enough to really de-select the
438 * current GW. It will only instruct the gateway client code to perform
439 * a re-election the next time that this is needed.
441 * When gw client mode is being switched off the current GW must be
442 * de-selected explicitly otherwise no GW_ADD uevent is thrown on
443 * client mode re-activation. This is operation is performed in
444 * batadv_gw_check_client_stop().
446 batadv_gw_reselect(bat_priv);
447 /* always call batadv_gw_check_client_stop() before changing the gateway
450 batadv_gw_check_client_stop(bat_priv);
451 atomic_set(&bat_priv->gw_mode, (unsigned int)gw_mode_tmp);
452 batadv_gw_tvlv_container_update(bat_priv);
456 static ssize_t batadv_show_gw_bwidth(struct kobject *kobj,
457 struct attribute *attr, char *buff)
459 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
462 down = atomic_read(&bat_priv->gw.bandwidth_down);
463 up = atomic_read(&bat_priv->gw.bandwidth_up);
465 return sprintf(buff, "%u.%u/%u.%u MBit\n", down / 10,
466 down % 10, up / 10, up % 10);
469 static ssize_t batadv_store_gw_bwidth(struct kobject *kobj,
470 struct attribute *attr, char *buff,
473 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
475 if (buff[count - 1] == '\n')
476 buff[count - 1] = '\0';
478 return batadv_gw_bandwidth_set(net_dev, buff, count);
482 * batadv_show_isolation_mark - print the current isolation mark/mask
483 * @kobj: kobject representing the private mesh sysfs directory
484 * @attr: the batman-adv attribute the user is interacting with
485 * @buff: the buffer that will contain the data to send back to the user
487 * Returns the number of bytes written into 'buff' on success or a negative
488 * error code in case of failure
490 static ssize_t batadv_show_isolation_mark(struct kobject *kobj,
491 struct attribute *attr, char *buff)
493 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
495 return sprintf(buff, "%#.8x/%#.8x\n", bat_priv->isolation_mark,
496 bat_priv->isolation_mark_mask);
500 * batadv_store_isolation_mark - parse and store the isolation mark/mask entered
502 * @kobj: kobject representing the private mesh sysfs directory
503 * @attr: the batman-adv attribute the user is interacting with
504 * @buff: the buffer containing the user data
505 * @count: number of bytes in the buffer
507 * Returns 'count' on success or a negative error code in case of failure
509 static ssize_t batadv_store_isolation_mark(struct kobject *kobj,
510 struct attribute *attr, char *buff,
513 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
514 struct batadv_priv *bat_priv = netdev_priv(net_dev);
518 /* parse the mask if it has been specified, otherwise assume the mask is
519 * the biggest possible
522 mask_ptr = strchr(buff, '/');
527 /* the mask must be entered in hex base as it is going to be a
528 * bitmask and not a prefix length
530 if (kstrtou32(mask_ptr, 16, &mask) < 0)
534 /* the mark can be entered in any base */
535 if (kstrtou32(buff, 0, &mark) < 0)
538 bat_priv->isolation_mark_mask = mask;
539 /* erase bits not covered by the mask */
540 bat_priv->isolation_mark = mark & bat_priv->isolation_mark_mask;
543 "New skb mark for extended isolation: %#.8x/%#.8x\n",
544 bat_priv->isolation_mark, bat_priv->isolation_mark_mask);
549 BATADV_ATTR_SIF_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL);
550 BATADV_ATTR_SIF_BOOL(bonding, S_IRUGO | S_IWUSR, NULL);
551 #ifdef CONFIG_BATMAN_ADV_BLA
552 BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance, S_IRUGO | S_IWUSR, NULL);
554 #ifdef CONFIG_BATMAN_ADV_DAT
555 BATADV_ATTR_SIF_BOOL(distributed_arp_table, S_IRUGO | S_IWUSR,
556 batadv_dat_status_update);
558 BATADV_ATTR_SIF_BOOL(fragmentation, S_IRUGO | S_IWUSR, batadv_update_min_mtu);
559 static BATADV_ATTR(routing_algo, S_IRUGO, batadv_show_bat_algo, NULL);
560 static BATADV_ATTR(gw_mode, S_IRUGO | S_IWUSR, batadv_show_gw_mode,
561 batadv_store_gw_mode);
562 BATADV_ATTR_SIF_UINT(orig_interval, orig_interval, S_IRUGO | S_IWUSR,
563 2 * BATADV_JITTER, INT_MAX, NULL);
564 BATADV_ATTR_SIF_UINT(hop_penalty, hop_penalty, S_IRUGO | S_IWUSR, 0,
565 BATADV_TQ_MAX_VALUE, NULL);
566 BATADV_ATTR_SIF_UINT(gw_sel_class, gw_sel_class, S_IRUGO | S_IWUSR, 1,
567 BATADV_TQ_MAX_VALUE, batadv_post_gw_reselect);
568 static BATADV_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, batadv_show_gw_bwidth,
569 batadv_store_gw_bwidth);
570 #ifdef CONFIG_BATMAN_ADV_MCAST
571 BATADV_ATTR_SIF_BOOL(multicast_mode, S_IRUGO | S_IWUSR, NULL);
573 #ifdef CONFIG_BATMAN_ADV_DEBUG
574 BATADV_ATTR_SIF_UINT(log_level, log_level, S_IRUGO | S_IWUSR, 0,
575 BATADV_DBG_ALL, NULL);
577 #ifdef CONFIG_BATMAN_ADV_NC
578 BATADV_ATTR_SIF_BOOL(network_coding, S_IRUGO | S_IWUSR,
579 batadv_nc_status_update);
581 static BATADV_ATTR(isolation_mark, S_IRUGO | S_IWUSR,
582 batadv_show_isolation_mark, batadv_store_isolation_mark);
584 static struct batadv_attribute *batadv_mesh_attrs[] = {
585 &batadv_attr_aggregated_ogms,
586 &batadv_attr_bonding,
587 #ifdef CONFIG_BATMAN_ADV_BLA
588 &batadv_attr_bridge_loop_avoidance,
590 #ifdef CONFIG_BATMAN_ADV_DAT
591 &batadv_attr_distributed_arp_table,
593 #ifdef CONFIG_BATMAN_ADV_MCAST
594 &batadv_attr_multicast_mode,
596 &batadv_attr_fragmentation,
597 &batadv_attr_routing_algo,
598 &batadv_attr_gw_mode,
599 &batadv_attr_orig_interval,
600 &batadv_attr_hop_penalty,
601 &batadv_attr_gw_sel_class,
602 &batadv_attr_gw_bandwidth,
603 #ifdef CONFIG_BATMAN_ADV_DEBUG
604 &batadv_attr_log_level,
606 #ifdef CONFIG_BATMAN_ADV_NC
607 &batadv_attr_network_coding,
609 &batadv_attr_isolation_mark,
613 BATADV_ATTR_VLAN_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL);
616 * batadv_vlan_attrs - array of vlan specific sysfs attributes
618 static struct batadv_attribute *batadv_vlan_attrs[] = {
619 &batadv_attr_vlan_ap_isolation,
623 int batadv_sysfs_add_meshif(struct net_device *dev)
625 struct kobject *batif_kobject = &dev->dev.kobj;
626 struct batadv_priv *bat_priv = netdev_priv(dev);
627 struct batadv_attribute **bat_attr;
630 bat_priv->mesh_obj = kobject_create_and_add(BATADV_SYSFS_IF_MESH_SUBDIR,
632 if (!bat_priv->mesh_obj) {
633 batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
634 BATADV_SYSFS_IF_MESH_SUBDIR);
638 for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) {
639 err = sysfs_create_file(bat_priv->mesh_obj,
640 &((*bat_attr)->attr));
642 batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n",
643 dev->name, BATADV_SYSFS_IF_MESH_SUBDIR,
644 ((*bat_attr)->attr).name);
652 for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr)
653 sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
655 kobject_put(bat_priv->mesh_obj);
656 bat_priv->mesh_obj = NULL;
661 void batadv_sysfs_del_meshif(struct net_device *dev)
663 struct batadv_priv *bat_priv = netdev_priv(dev);
664 struct batadv_attribute **bat_attr;
666 for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr)
667 sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
669 kobject_put(bat_priv->mesh_obj);
670 bat_priv->mesh_obj = NULL;
674 * batadv_sysfs_add_vlan - add all the needed sysfs objects for the new vlan
675 * @dev: netdev of the mesh interface
676 * @vlan: private data of the newly added VLAN interface
678 * Returns 0 on success and -ENOMEM if any of the structure allocations fails.
680 int batadv_sysfs_add_vlan(struct net_device *dev,
681 struct batadv_softif_vlan *vlan)
683 char vlan_subdir[sizeof(BATADV_SYSFS_VLAN_SUBDIR_PREFIX) + 5];
684 struct batadv_priv *bat_priv = netdev_priv(dev);
685 struct batadv_attribute **bat_attr;
688 if (vlan->vid & BATADV_VLAN_HAS_TAG) {
689 sprintf(vlan_subdir, BATADV_SYSFS_VLAN_SUBDIR_PREFIX "%hu",
690 vlan->vid & VLAN_VID_MASK);
692 vlan->kobj = kobject_create_and_add(vlan_subdir,
695 batadv_err(dev, "Can't add sysfs directory: %s/%s\n",
696 dev->name, vlan_subdir);
700 /* the untagged LAN uses the root folder to store its "VLAN
701 * specific attributes"
703 vlan->kobj = bat_priv->mesh_obj;
704 kobject_get(bat_priv->mesh_obj);
707 for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) {
708 err = sysfs_create_file(vlan->kobj,
709 &((*bat_attr)->attr));
711 batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n",
712 dev->name, vlan_subdir,
713 ((*bat_attr)->attr).name);
721 for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr)
722 sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr));
724 kobject_put(vlan->kobj);
731 * batadv_sysfs_del_vlan - remove all the sysfs objects for a given VLAN
732 * @bat_priv: the bat priv with all the soft interface information
733 * @vlan: the private data of the VLAN to destroy
735 void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv,
736 struct batadv_softif_vlan *vlan)
738 struct batadv_attribute **bat_attr;
740 for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr)
741 sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr));
743 kobject_put(vlan->kobj);
747 static ssize_t batadv_show_mesh_iface(struct kobject *kobj,
748 struct attribute *attr, char *buff)
750 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
751 struct batadv_hard_iface *hard_iface;
755 hard_iface = batadv_hardif_get_by_netdev(net_dev);
759 if (hard_iface->if_status == BATADV_IF_NOT_IN_USE)
762 ifname = hard_iface->soft_iface->name;
764 length = sprintf(buff, "%s\n", ifname);
766 batadv_hardif_free_ref(hard_iface);
771 static ssize_t batadv_store_mesh_iface(struct kobject *kobj,
772 struct attribute *attr, char *buff,
775 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
776 struct batadv_hard_iface *hard_iface;
780 hard_iface = batadv_hardif_get_by_netdev(net_dev);
784 if (buff[count - 1] == '\n')
785 buff[count - 1] = '\0';
787 if (strlen(buff) >= IFNAMSIZ) {
788 pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n",
790 batadv_hardif_free_ref(hard_iface);
794 if (strncmp(buff, "none", 4) == 0)
795 status_tmp = BATADV_IF_NOT_IN_USE;
797 status_tmp = BATADV_IF_I_WANT_YOU;
799 if (hard_iface->if_status == status_tmp)
802 if ((hard_iface->soft_iface) &&
803 (strncmp(hard_iface->soft_iface->name, buff, IFNAMSIZ) == 0))
808 if (status_tmp == BATADV_IF_NOT_IN_USE) {
809 batadv_hardif_disable_interface(hard_iface,
810 BATADV_IF_CLEANUP_AUTO);
814 /* if the interface already is in use */
815 if (hard_iface->if_status != BATADV_IF_NOT_IN_USE)
816 batadv_hardif_disable_interface(hard_iface,
817 BATADV_IF_CLEANUP_AUTO);
819 ret = batadv_hardif_enable_interface(hard_iface, buff);
824 batadv_hardif_free_ref(hard_iface);
828 static ssize_t batadv_show_iface_status(struct kobject *kobj,
829 struct attribute *attr, char *buff)
831 struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
832 struct batadv_hard_iface *hard_iface;
835 hard_iface = batadv_hardif_get_by_netdev(net_dev);
839 switch (hard_iface->if_status) {
840 case BATADV_IF_TO_BE_REMOVED:
841 length = sprintf(buff, "disabling\n");
843 case BATADV_IF_INACTIVE:
844 length = sprintf(buff, "inactive\n");
846 case BATADV_IF_ACTIVE:
847 length = sprintf(buff, "active\n");
849 case BATADV_IF_TO_BE_ACTIVATED:
850 length = sprintf(buff, "enabling\n");
852 case BATADV_IF_NOT_IN_USE:
854 length = sprintf(buff, "not in use\n");
858 batadv_hardif_free_ref(hard_iface);
863 static BATADV_ATTR(mesh_iface, S_IRUGO | S_IWUSR, batadv_show_mesh_iface,
864 batadv_store_mesh_iface);
865 static BATADV_ATTR(iface_status, S_IRUGO, batadv_show_iface_status, NULL);
867 static struct batadv_attribute *batadv_batman_attrs[] = {
868 &batadv_attr_mesh_iface,
869 &batadv_attr_iface_status,
873 int batadv_sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev)
875 struct kobject *hardif_kobject = &dev->dev.kobj;
876 struct batadv_attribute **bat_attr;
879 *hardif_obj = kobject_create_and_add(BATADV_SYSFS_IF_BAT_SUBDIR,
883 batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
884 BATADV_SYSFS_IF_BAT_SUBDIR);
888 for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) {
889 err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr));
891 batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n",
892 dev->name, BATADV_SYSFS_IF_BAT_SUBDIR,
893 ((*bat_attr)->attr).name);
901 for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr)
902 sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr));
907 void batadv_sysfs_del_hardif(struct kobject **hardif_obj)
909 kobject_put(*hardif_obj);
913 int batadv_throw_uevent(struct batadv_priv *bat_priv, enum batadv_uev_type type,
914 enum batadv_uev_action action, const char *data)
917 struct kobject *bat_kobj;
918 char *uevent_env[4] = { NULL, NULL, NULL, NULL };
920 bat_kobj = &bat_priv->soft_iface->dev.kobj;
922 uevent_env[0] = kasprintf(GFP_ATOMIC,
923 "%s%s", BATADV_UEV_TYPE_VAR,
924 batadv_uev_type_str[type]);
928 uevent_env[1] = kasprintf(GFP_ATOMIC,
929 "%s%s", BATADV_UEV_ACTION_VAR,
930 batadv_uev_action_str[action]);
934 /* If the event is DEL, ignore the data field */
935 if (action != BATADV_UEV_DEL) {
936 uevent_env[2] = kasprintf(GFP_ATOMIC,
937 "%s%s", BATADV_UEV_DATA_VAR, data);
942 ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env);
944 kfree(uevent_env[0]);
945 kfree(uevent_env[1]);
946 kfree(uevent_env[2]);
949 batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
950 "Impossible to send uevent for (%s,%s,%s) event (err: %d)\n",
951 batadv_uev_type_str[type],
952 batadv_uev_action_str[action],
953 (action == BATADV_UEV_DEL ? "NULL" : data), ret);