1 /* Copyright (C) 2010-2016 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/kref.h>
29 #include <linux/kernel.h>
30 #include <linux/netdevice.h>
31 #include <linux/printk.h>
32 #include <linux/rculist.h>
33 #include <linux/rcupdate.h>
34 #include <linux/rtnetlink.h>
35 #include <linux/slab.h>
36 #include <linux/stat.h>
37 #include <linux/stddef.h>
38 #include <linux/string.h>
39 #include <linux/stringify.h>
41 #include "distributed-arp-table.h"
42 #include "gateway_client.h"
43 #include "gateway_common.h"
44 #include "bridge_loop_avoidance.h"
45 #include "hard-interface.h"
46 #include "network-coding.h"
48 #include "soft-interface.h"
50 static struct net_device
*batadv_kobj_to_netdev(struct kobject
*obj
)
52 struct device
*dev
= container_of(obj
->parent
, struct device
, kobj
);
54 return to_net_dev(dev
);
57 static struct batadv_priv
*batadv_kobj_to_batpriv(struct kobject
*obj
)
59 struct net_device
*net_dev
= batadv_kobj_to_netdev(obj
);
61 return netdev_priv(net_dev
);
65 * batadv_vlan_kobj_to_batpriv - convert a vlan kobj in the associated batpriv
66 * @obj: kobject to covert
68 * Return: the associated batadv_priv struct.
70 static struct batadv_priv
*batadv_vlan_kobj_to_batpriv(struct kobject
*obj
)
72 /* VLAN specific attributes are located in the root sysfs folder if they
73 * refer to the untagged VLAN..
75 if (!strcmp(BATADV_SYSFS_IF_MESH_SUBDIR
, obj
->name
))
76 return batadv_kobj_to_batpriv(obj
);
78 /* ..while the attributes for the tagged vlans are located in
79 * the in the corresponding "vlan%VID" subfolder
81 return batadv_kobj_to_batpriv(obj
->parent
);
85 * batadv_kobj_to_vlan - convert a kobj in the associated softif_vlan struct
86 * @bat_priv: the bat priv with all the soft interface information
87 * @obj: kobject to covert
89 * Return: the associated softif_vlan struct if found, NULL otherwise.
91 static struct batadv_softif_vlan
*
92 batadv_kobj_to_vlan(struct batadv_priv
*bat_priv
, struct kobject
*obj
)
94 struct batadv_softif_vlan
*vlan_tmp
, *vlan
= NULL
;
97 hlist_for_each_entry_rcu(vlan_tmp
, &bat_priv
->softif_vlan_list
, list
) {
98 if (vlan_tmp
->kobj
!= obj
)
101 if (!kref_get_unless_zero(&vlan_tmp
->refcount
))
112 #define BATADV_UEV_TYPE_VAR "BATTYPE="
113 #define BATADV_UEV_ACTION_VAR "BATACTION="
114 #define BATADV_UEV_DATA_VAR "BATDATA="
116 static char *batadv_uev_action_str
[] = {
122 static char *batadv_uev_type_str
[] = {
126 /* Use this, if you have customized show and store functions for vlan attrs */
127 #define BATADV_ATTR_VLAN(_name, _mode, _show, _store) \
128 struct batadv_attribute batadv_attr_vlan_##_name = { \
129 .attr = {.name = __stringify(_name), \
135 /* Use this, if you have customized show and store functions */
136 #define BATADV_ATTR(_name, _mode, _show, _store) \
137 struct batadv_attribute batadv_attr_##_name = { \
138 .attr = {.name = __stringify(_name), \
144 #define BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \
145 ssize_t batadv_store_##_name(struct kobject *kobj, \
146 struct attribute *attr, char *buff, \
149 struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
150 struct batadv_priv *bat_priv = netdev_priv(net_dev); \
152 return __batadv_store_bool_attr(buff, count, _post_func, attr, \
153 &bat_priv->_name, net_dev); \
156 #define BATADV_ATTR_SIF_SHOW_BOOL(_name) \
157 ssize_t batadv_show_##_name(struct kobject *kobj, \
158 struct attribute *attr, char *buff) \
160 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \
162 return sprintf(buff, "%s\n", \
163 atomic_read(&bat_priv->_name) == 0 ? \
164 "disabled" : "enabled"); \
167 /* Use this, if you are going to turn a [name] in the soft-interface
168 * (bat_priv) on or off
170 #define BATADV_ATTR_SIF_BOOL(_name, _mode, _post_func) \
171 static BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \
172 static BATADV_ATTR_SIF_SHOW_BOOL(_name) \
173 static BATADV_ATTR(_name, _mode, batadv_show_##_name, \
174 batadv_store_##_name)
176 #define BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func) \
177 ssize_t batadv_store_##_name(struct kobject *kobj, \
178 struct attribute *attr, char *buff, \
181 struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
182 struct batadv_priv *bat_priv = netdev_priv(net_dev); \
184 return __batadv_store_uint_attr(buff, count, _min, _max, \
186 &bat_priv->_var, net_dev); \
189 #define BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \
190 ssize_t batadv_show_##_name(struct kobject *kobj, \
191 struct attribute *attr, char *buff) \
193 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \
195 return sprintf(buff, "%i\n", atomic_read(&bat_priv->_var)); \
198 /* Use this, if you are going to set [name] in the soft-interface
199 * (bat_priv) to an unsigned integer value
201 #define BATADV_ATTR_SIF_UINT(_name, _var, _mode, _min, _max, _post_func)\
202 static BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func)\
203 static BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \
204 static BATADV_ATTR(_name, _mode, batadv_show_##_name, \
205 batadv_store_##_name)
207 #define BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \
208 ssize_t batadv_store_vlan_##_name(struct kobject *kobj, \
209 struct attribute *attr, char *buff, \
212 struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\
213 struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \
215 size_t res = __batadv_store_bool_attr(buff, count, _post_func, \
216 attr, &vlan->_name, \
217 bat_priv->soft_iface); \
219 batadv_softif_vlan_free_ref(vlan); \
223 #define BATADV_ATTR_VLAN_SHOW_BOOL(_name) \
224 ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \
225 struct attribute *attr, char *buff) \
227 struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\
228 struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \
230 size_t res = sprintf(buff, "%s\n", \
231 atomic_read(&vlan->_name) == 0 ? \
232 "disabled" : "enabled"); \
234 batadv_softif_vlan_free_ref(vlan); \
238 /* Use this, if you are going to turn a [name] in the vlan struct on or off */
239 #define BATADV_ATTR_VLAN_BOOL(_name, _mode, _post_func) \
240 static BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \
241 static BATADV_ATTR_VLAN_SHOW_BOOL(_name) \
242 static BATADV_ATTR_VLAN(_name, _mode, batadv_show_vlan_##_name, \
243 batadv_store_vlan_##_name)
245 static int batadv_store_bool_attr(char *buff
, size_t count
,
246 struct net_device
*net_dev
,
247 const char *attr_name
, atomic_t
*attr
,
254 if (buff
[count
- 1] == '\n')
255 buff
[count
- 1] = '\0';
257 if ((strncmp(buff
, "1", 2) == 0) ||
258 (strncmp(buff
, "enable", 7) == 0) ||
259 (strncmp(buff
, "enabled", 8) == 0))
262 if ((strncmp(buff
, "0", 2) == 0) ||
263 (strncmp(buff
, "disable", 8) == 0) ||
264 (strncmp(buff
, "disabled", 9) == 0))
268 batadv_info(net_dev
, "%s: Invalid parameter received: %s\n",
273 if (atomic_read(attr
) == enabled
)
276 batadv_info(net_dev
, "%s: Changing from: %s to: %s\n", attr_name
,
277 atomic_read(attr
) == 1 ? "enabled" : "disabled",
278 enabled
== 1 ? "enabled" : "disabled");
282 atomic_set(attr
, (unsigned int)enabled
);
286 static inline ssize_t
287 __batadv_store_bool_attr(char *buff
, size_t count
,
288 void (*post_func
)(struct net_device
*),
289 struct attribute
*attr
,
290 atomic_t
*attr_store
, struct net_device
*net_dev
)
295 ret
= batadv_store_bool_attr(buff
, count
, net_dev
, attr
->name
,
296 attr_store
, &changed
);
297 if (post_func
&& changed
)
303 static int batadv_store_uint_attr(const char *buff
, size_t count
,
304 struct net_device
*net_dev
,
305 const char *attr_name
,
306 unsigned int min
, unsigned int max
,
309 unsigned long uint_val
;
312 ret
= kstrtoul(buff
, 10, &uint_val
);
314 batadv_info(net_dev
, "%s: Invalid parameter received: %s\n",
319 if (uint_val
< min
) {
320 batadv_info(net_dev
, "%s: Value is too small: %lu min: %u\n",
321 attr_name
, uint_val
, min
);
325 if (uint_val
> max
) {
326 batadv_info(net_dev
, "%s: Value is too big: %lu max: %u\n",
327 attr_name
, uint_val
, max
);
331 if (atomic_read(attr
) == uint_val
)
334 batadv_info(net_dev
, "%s: Changing from: %i to: %lu\n",
335 attr_name
, atomic_read(attr
), uint_val
);
337 atomic_set(attr
, uint_val
);
341 static inline ssize_t
342 __batadv_store_uint_attr(const char *buff
, size_t count
,
344 void (*post_func
)(struct net_device
*),
345 const struct attribute
*attr
,
346 atomic_t
*attr_store
, struct net_device
*net_dev
)
350 ret
= batadv_store_uint_attr(buff
, count
, net_dev
, attr
->name
, min
, max
,
352 if (post_func
&& ret
)
358 static ssize_t
batadv_show_bat_algo(struct kobject
*kobj
,
359 struct attribute
*attr
, char *buff
)
361 struct batadv_priv
*bat_priv
= batadv_kobj_to_batpriv(kobj
);
363 return sprintf(buff
, "%s\n", bat_priv
->bat_algo_ops
->name
);
366 static void batadv_post_gw_reselect(struct net_device
*net_dev
)
368 struct batadv_priv
*bat_priv
= netdev_priv(net_dev
);
370 batadv_gw_reselect(bat_priv
);
373 static ssize_t
batadv_show_gw_mode(struct kobject
*kobj
, struct attribute
*attr
,
376 struct batadv_priv
*bat_priv
= batadv_kobj_to_batpriv(kobj
);
379 switch (atomic_read(&bat_priv
->gw_mode
)) {
380 case BATADV_GW_MODE_CLIENT
:
381 bytes_written
= sprintf(buff
, "%s\n",
382 BATADV_GW_MODE_CLIENT_NAME
);
384 case BATADV_GW_MODE_SERVER
:
385 bytes_written
= sprintf(buff
, "%s\n",
386 BATADV_GW_MODE_SERVER_NAME
);
389 bytes_written
= sprintf(buff
, "%s\n",
390 BATADV_GW_MODE_OFF_NAME
);
394 return bytes_written
;
397 static ssize_t
batadv_store_gw_mode(struct kobject
*kobj
,
398 struct attribute
*attr
, char *buff
,
401 struct net_device
*net_dev
= batadv_kobj_to_netdev(kobj
);
402 struct batadv_priv
*bat_priv
= netdev_priv(net_dev
);
403 char *curr_gw_mode_str
;
404 int gw_mode_tmp
= -1;
406 if (buff
[count
- 1] == '\n')
407 buff
[count
- 1] = '\0';
409 if (strncmp(buff
, BATADV_GW_MODE_OFF_NAME
,
410 strlen(BATADV_GW_MODE_OFF_NAME
)) == 0)
411 gw_mode_tmp
= BATADV_GW_MODE_OFF
;
413 if (strncmp(buff
, BATADV_GW_MODE_CLIENT_NAME
,
414 strlen(BATADV_GW_MODE_CLIENT_NAME
)) == 0)
415 gw_mode_tmp
= BATADV_GW_MODE_CLIENT
;
417 if (strncmp(buff
, BATADV_GW_MODE_SERVER_NAME
,
418 strlen(BATADV_GW_MODE_SERVER_NAME
)) == 0)
419 gw_mode_tmp
= BATADV_GW_MODE_SERVER
;
421 if (gw_mode_tmp
< 0) {
423 "Invalid parameter for 'gw mode' setting received: %s\n",
428 if (atomic_read(&bat_priv
->gw_mode
) == gw_mode_tmp
)
431 switch (atomic_read(&bat_priv
->gw_mode
)) {
432 case BATADV_GW_MODE_CLIENT
:
433 curr_gw_mode_str
= BATADV_GW_MODE_CLIENT_NAME
;
435 case BATADV_GW_MODE_SERVER
:
436 curr_gw_mode_str
= BATADV_GW_MODE_SERVER_NAME
;
439 curr_gw_mode_str
= BATADV_GW_MODE_OFF_NAME
;
443 batadv_info(net_dev
, "Changing gw mode from: %s to: %s\n",
444 curr_gw_mode_str
, buff
);
446 /* Invoking batadv_gw_reselect() is not enough to really de-select the
447 * current GW. It will only instruct the gateway client code to perform
448 * a re-election the next time that this is needed.
450 * When gw client mode is being switched off the current GW must be
451 * de-selected explicitly otherwise no GW_ADD uevent is thrown on
452 * client mode re-activation. This is operation is performed in
453 * batadv_gw_check_client_stop().
455 batadv_gw_reselect(bat_priv
);
456 /* always call batadv_gw_check_client_stop() before changing the gateway
459 batadv_gw_check_client_stop(bat_priv
);
460 atomic_set(&bat_priv
->gw_mode
, (unsigned int)gw_mode_tmp
);
461 batadv_gw_tvlv_container_update(bat_priv
);
465 static ssize_t
batadv_show_gw_bwidth(struct kobject
*kobj
,
466 struct attribute
*attr
, char *buff
)
468 struct batadv_priv
*bat_priv
= batadv_kobj_to_batpriv(kobj
);
471 down
= atomic_read(&bat_priv
->gw
.bandwidth_down
);
472 up
= atomic_read(&bat_priv
->gw
.bandwidth_up
);
474 return sprintf(buff
, "%u.%u/%u.%u MBit\n", down
/ 10,
475 down
% 10, up
/ 10, up
% 10);
478 static ssize_t
batadv_store_gw_bwidth(struct kobject
*kobj
,
479 struct attribute
*attr
, char *buff
,
482 struct net_device
*net_dev
= batadv_kobj_to_netdev(kobj
);
484 if (buff
[count
- 1] == '\n')
485 buff
[count
- 1] = '\0';
487 return batadv_gw_bandwidth_set(net_dev
, buff
, count
);
491 * batadv_show_isolation_mark - print the current isolation mark/mask
492 * @kobj: kobject representing the private mesh sysfs directory
493 * @attr: the batman-adv attribute the user is interacting with
494 * @buff: the buffer that will contain the data to send back to the user
496 * Return: the number of bytes written into 'buff' on success or a negative
497 * error code in case of failure
499 static ssize_t
batadv_show_isolation_mark(struct kobject
*kobj
,
500 struct attribute
*attr
, char *buff
)
502 struct batadv_priv
*bat_priv
= batadv_kobj_to_batpriv(kobj
);
504 return sprintf(buff
, "%#.8x/%#.8x\n", bat_priv
->isolation_mark
,
505 bat_priv
->isolation_mark_mask
);
509 * batadv_store_isolation_mark - parse and store the isolation mark/mask entered
511 * @kobj: kobject representing the private mesh sysfs directory
512 * @attr: the batman-adv attribute the user is interacting with
513 * @buff: the buffer containing the user data
514 * @count: number of bytes in the buffer
516 * Return: 'count' on success or a negative error code in case of failure
518 static ssize_t
batadv_store_isolation_mark(struct kobject
*kobj
,
519 struct attribute
*attr
, char *buff
,
522 struct net_device
*net_dev
= batadv_kobj_to_netdev(kobj
);
523 struct batadv_priv
*bat_priv
= netdev_priv(net_dev
);
527 /* parse the mask if it has been specified, otherwise assume the mask is
528 * the biggest possible
531 mask_ptr
= strchr(buff
, '/');
536 /* the mask must be entered in hex base as it is going to be a
537 * bitmask and not a prefix length
539 if (kstrtou32(mask_ptr
, 16, &mask
) < 0)
543 /* the mark can be entered in any base */
544 if (kstrtou32(buff
, 0, &mark
) < 0)
547 bat_priv
->isolation_mark_mask
= mask
;
548 /* erase bits not covered by the mask */
549 bat_priv
->isolation_mark
= mark
& bat_priv
->isolation_mark_mask
;
552 "New skb mark for extended isolation: %#.8x/%#.8x\n",
553 bat_priv
->isolation_mark
, bat_priv
->isolation_mark_mask
);
558 BATADV_ATTR_SIF_BOOL(aggregated_ogms
, S_IRUGO
| S_IWUSR
, NULL
);
559 BATADV_ATTR_SIF_BOOL(bonding
, S_IRUGO
| S_IWUSR
, NULL
);
560 #ifdef CONFIG_BATMAN_ADV_BLA
561 BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance
, S_IRUGO
| S_IWUSR
,
562 batadv_bla_status_update
);
564 #ifdef CONFIG_BATMAN_ADV_DAT
565 BATADV_ATTR_SIF_BOOL(distributed_arp_table
, S_IRUGO
| S_IWUSR
,
566 batadv_dat_status_update
);
568 BATADV_ATTR_SIF_BOOL(fragmentation
, S_IRUGO
| S_IWUSR
, batadv_update_min_mtu
);
569 static BATADV_ATTR(routing_algo
, S_IRUGO
, batadv_show_bat_algo
, NULL
);
570 static BATADV_ATTR(gw_mode
, S_IRUGO
| S_IWUSR
, batadv_show_gw_mode
,
571 batadv_store_gw_mode
);
572 BATADV_ATTR_SIF_UINT(orig_interval
, orig_interval
, S_IRUGO
| S_IWUSR
,
573 2 * BATADV_JITTER
, INT_MAX
, NULL
);
574 BATADV_ATTR_SIF_UINT(hop_penalty
, hop_penalty
, S_IRUGO
| S_IWUSR
, 0,
575 BATADV_TQ_MAX_VALUE
, NULL
);
576 BATADV_ATTR_SIF_UINT(gw_sel_class
, gw_sel_class
, S_IRUGO
| S_IWUSR
, 1,
577 BATADV_TQ_MAX_VALUE
, batadv_post_gw_reselect
);
578 static BATADV_ATTR(gw_bandwidth
, S_IRUGO
| S_IWUSR
, batadv_show_gw_bwidth
,
579 batadv_store_gw_bwidth
);
580 #ifdef CONFIG_BATMAN_ADV_MCAST
581 BATADV_ATTR_SIF_BOOL(multicast_mode
, S_IRUGO
| S_IWUSR
, NULL
);
583 #ifdef CONFIG_BATMAN_ADV_DEBUG
584 BATADV_ATTR_SIF_UINT(log_level
, log_level
, S_IRUGO
| S_IWUSR
, 0,
585 BATADV_DBG_ALL
, NULL
);
587 #ifdef CONFIG_BATMAN_ADV_NC
588 BATADV_ATTR_SIF_BOOL(network_coding
, S_IRUGO
| S_IWUSR
,
589 batadv_nc_status_update
);
591 static BATADV_ATTR(isolation_mark
, S_IRUGO
| S_IWUSR
,
592 batadv_show_isolation_mark
, batadv_store_isolation_mark
);
594 static struct batadv_attribute
*batadv_mesh_attrs
[] = {
595 &batadv_attr_aggregated_ogms
,
596 &batadv_attr_bonding
,
597 #ifdef CONFIG_BATMAN_ADV_BLA
598 &batadv_attr_bridge_loop_avoidance
,
600 #ifdef CONFIG_BATMAN_ADV_DAT
601 &batadv_attr_distributed_arp_table
,
603 #ifdef CONFIG_BATMAN_ADV_MCAST
604 &batadv_attr_multicast_mode
,
606 &batadv_attr_fragmentation
,
607 &batadv_attr_routing_algo
,
608 &batadv_attr_gw_mode
,
609 &batadv_attr_orig_interval
,
610 &batadv_attr_hop_penalty
,
611 &batadv_attr_gw_sel_class
,
612 &batadv_attr_gw_bandwidth
,
613 #ifdef CONFIG_BATMAN_ADV_DEBUG
614 &batadv_attr_log_level
,
616 #ifdef CONFIG_BATMAN_ADV_NC
617 &batadv_attr_network_coding
,
619 &batadv_attr_isolation_mark
,
623 BATADV_ATTR_VLAN_BOOL(ap_isolation
, S_IRUGO
| S_IWUSR
, NULL
);
625 /* array of vlan specific sysfs attributes */
626 static struct batadv_attribute
*batadv_vlan_attrs
[] = {
627 &batadv_attr_vlan_ap_isolation
,
631 int batadv_sysfs_add_meshif(struct net_device
*dev
)
633 struct kobject
*batif_kobject
= &dev
->dev
.kobj
;
634 struct batadv_priv
*bat_priv
= netdev_priv(dev
);
635 struct batadv_attribute
**bat_attr
;
638 bat_priv
->mesh_obj
= kobject_create_and_add(BATADV_SYSFS_IF_MESH_SUBDIR
,
640 if (!bat_priv
->mesh_obj
) {
641 batadv_err(dev
, "Can't add sysfs directory: %s/%s\n", dev
->name
,
642 BATADV_SYSFS_IF_MESH_SUBDIR
);
646 for (bat_attr
= batadv_mesh_attrs
; *bat_attr
; ++bat_attr
) {
647 err
= sysfs_create_file(bat_priv
->mesh_obj
,
648 &((*bat_attr
)->attr
));
650 batadv_err(dev
, "Can't add sysfs file: %s/%s/%s\n",
651 dev
->name
, BATADV_SYSFS_IF_MESH_SUBDIR
,
652 ((*bat_attr
)->attr
).name
);
660 for (bat_attr
= batadv_mesh_attrs
; *bat_attr
; ++bat_attr
)
661 sysfs_remove_file(bat_priv
->mesh_obj
, &((*bat_attr
)->attr
));
663 kobject_put(bat_priv
->mesh_obj
);
664 bat_priv
->mesh_obj
= NULL
;
669 void batadv_sysfs_del_meshif(struct net_device
*dev
)
671 struct batadv_priv
*bat_priv
= netdev_priv(dev
);
672 struct batadv_attribute
**bat_attr
;
674 for (bat_attr
= batadv_mesh_attrs
; *bat_attr
; ++bat_attr
)
675 sysfs_remove_file(bat_priv
->mesh_obj
, &((*bat_attr
)->attr
));
677 kobject_put(bat_priv
->mesh_obj
);
678 bat_priv
->mesh_obj
= NULL
;
682 * batadv_sysfs_add_vlan - add all the needed sysfs objects for the new vlan
683 * @dev: netdev of the mesh interface
684 * @vlan: private data of the newly added VLAN interface
686 * Return: 0 on success and -ENOMEM if any of the structure allocations fails.
688 int batadv_sysfs_add_vlan(struct net_device
*dev
,
689 struct batadv_softif_vlan
*vlan
)
691 char vlan_subdir
[sizeof(BATADV_SYSFS_VLAN_SUBDIR_PREFIX
) + 5];
692 struct batadv_priv
*bat_priv
= netdev_priv(dev
);
693 struct batadv_attribute
**bat_attr
;
696 if (vlan
->vid
& BATADV_VLAN_HAS_TAG
) {
697 sprintf(vlan_subdir
, BATADV_SYSFS_VLAN_SUBDIR_PREFIX
"%hu",
698 vlan
->vid
& VLAN_VID_MASK
);
700 vlan
->kobj
= kobject_create_and_add(vlan_subdir
,
703 batadv_err(dev
, "Can't add sysfs directory: %s/%s\n",
704 dev
->name
, vlan_subdir
);
708 /* the untagged LAN uses the root folder to store its "VLAN
709 * specific attributes"
711 vlan
->kobj
= bat_priv
->mesh_obj
;
712 kobject_get(bat_priv
->mesh_obj
);
715 for (bat_attr
= batadv_vlan_attrs
; *bat_attr
; ++bat_attr
) {
716 err
= sysfs_create_file(vlan
->kobj
,
717 &((*bat_attr
)->attr
));
719 batadv_err(dev
, "Can't add sysfs file: %s/%s/%s\n",
720 dev
->name
, vlan_subdir
,
721 ((*bat_attr
)->attr
).name
);
729 for (bat_attr
= batadv_vlan_attrs
; *bat_attr
; ++bat_attr
)
730 sysfs_remove_file(vlan
->kobj
, &((*bat_attr
)->attr
));
732 kobject_put(vlan
->kobj
);
739 * batadv_sysfs_del_vlan - remove all the sysfs objects for a given VLAN
740 * @bat_priv: the bat priv with all the soft interface information
741 * @vlan: the private data of the VLAN to destroy
743 void batadv_sysfs_del_vlan(struct batadv_priv
*bat_priv
,
744 struct batadv_softif_vlan
*vlan
)
746 struct batadv_attribute
**bat_attr
;
748 for (bat_attr
= batadv_vlan_attrs
; *bat_attr
; ++bat_attr
)
749 sysfs_remove_file(vlan
->kobj
, &((*bat_attr
)->attr
));
751 kobject_put(vlan
->kobj
);
755 static ssize_t
batadv_show_mesh_iface(struct kobject
*kobj
,
756 struct attribute
*attr
, char *buff
)
758 struct net_device
*net_dev
= batadv_kobj_to_netdev(kobj
);
759 struct batadv_hard_iface
*hard_iface
;
763 hard_iface
= batadv_hardif_get_by_netdev(net_dev
);
767 if (hard_iface
->if_status
== BATADV_IF_NOT_IN_USE
)
770 ifname
= hard_iface
->soft_iface
->name
;
772 length
= sprintf(buff
, "%s\n", ifname
);
774 batadv_hardif_free_ref(hard_iface
);
779 static ssize_t
batadv_store_mesh_iface(struct kobject
*kobj
,
780 struct attribute
*attr
, char *buff
,
783 struct net_device
*net_dev
= batadv_kobj_to_netdev(kobj
);
784 struct batadv_hard_iface
*hard_iface
;
788 hard_iface
= batadv_hardif_get_by_netdev(net_dev
);
792 if (buff
[count
- 1] == '\n')
793 buff
[count
- 1] = '\0';
795 if (strlen(buff
) >= IFNAMSIZ
) {
796 pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n",
798 batadv_hardif_free_ref(hard_iface
);
802 if (strncmp(buff
, "none", 4) == 0)
803 status_tmp
= BATADV_IF_NOT_IN_USE
;
805 status_tmp
= BATADV_IF_I_WANT_YOU
;
807 if (hard_iface
->if_status
== status_tmp
)
810 if ((hard_iface
->soft_iface
) &&
811 (strncmp(hard_iface
->soft_iface
->name
, buff
, IFNAMSIZ
) == 0))
816 if (status_tmp
== BATADV_IF_NOT_IN_USE
) {
817 batadv_hardif_disable_interface(hard_iface
,
818 BATADV_IF_CLEANUP_AUTO
);
822 /* if the interface already is in use */
823 if (hard_iface
->if_status
!= BATADV_IF_NOT_IN_USE
)
824 batadv_hardif_disable_interface(hard_iface
,
825 BATADV_IF_CLEANUP_AUTO
);
827 ret
= batadv_hardif_enable_interface(hard_iface
, buff
);
832 batadv_hardif_free_ref(hard_iface
);
836 static ssize_t
batadv_show_iface_status(struct kobject
*kobj
,
837 struct attribute
*attr
, char *buff
)
839 struct net_device
*net_dev
= batadv_kobj_to_netdev(kobj
);
840 struct batadv_hard_iface
*hard_iface
;
843 hard_iface
= batadv_hardif_get_by_netdev(net_dev
);
847 switch (hard_iface
->if_status
) {
848 case BATADV_IF_TO_BE_REMOVED
:
849 length
= sprintf(buff
, "disabling\n");
851 case BATADV_IF_INACTIVE
:
852 length
= sprintf(buff
, "inactive\n");
854 case BATADV_IF_ACTIVE
:
855 length
= sprintf(buff
, "active\n");
857 case BATADV_IF_TO_BE_ACTIVATED
:
858 length
= sprintf(buff
, "enabling\n");
860 case BATADV_IF_NOT_IN_USE
:
862 length
= sprintf(buff
, "not in use\n");
866 batadv_hardif_free_ref(hard_iface
);
871 static BATADV_ATTR(mesh_iface
, S_IRUGO
| S_IWUSR
, batadv_show_mesh_iface
,
872 batadv_store_mesh_iface
);
873 static BATADV_ATTR(iface_status
, S_IRUGO
, batadv_show_iface_status
, NULL
);
875 static struct batadv_attribute
*batadv_batman_attrs
[] = {
876 &batadv_attr_mesh_iface
,
877 &batadv_attr_iface_status
,
881 int batadv_sysfs_add_hardif(struct kobject
**hardif_obj
, struct net_device
*dev
)
883 struct kobject
*hardif_kobject
= &dev
->dev
.kobj
;
884 struct batadv_attribute
**bat_attr
;
887 *hardif_obj
= kobject_create_and_add(BATADV_SYSFS_IF_BAT_SUBDIR
,
891 batadv_err(dev
, "Can't add sysfs directory: %s/%s\n", dev
->name
,
892 BATADV_SYSFS_IF_BAT_SUBDIR
);
896 for (bat_attr
= batadv_batman_attrs
; *bat_attr
; ++bat_attr
) {
897 err
= sysfs_create_file(*hardif_obj
, &((*bat_attr
)->attr
));
899 batadv_err(dev
, "Can't add sysfs file: %s/%s/%s\n",
900 dev
->name
, BATADV_SYSFS_IF_BAT_SUBDIR
,
901 ((*bat_attr
)->attr
).name
);
909 for (bat_attr
= batadv_batman_attrs
; *bat_attr
; ++bat_attr
)
910 sysfs_remove_file(*hardif_obj
, &((*bat_attr
)->attr
));
915 void batadv_sysfs_del_hardif(struct kobject
**hardif_obj
)
917 kobject_put(*hardif_obj
);
921 int batadv_throw_uevent(struct batadv_priv
*bat_priv
, enum batadv_uev_type type
,
922 enum batadv_uev_action action
, const char *data
)
925 struct kobject
*bat_kobj
;
926 char *uevent_env
[4] = { NULL
, NULL
, NULL
, NULL
};
928 bat_kobj
= &bat_priv
->soft_iface
->dev
.kobj
;
930 uevent_env
[0] = kasprintf(GFP_ATOMIC
,
931 "%s%s", BATADV_UEV_TYPE_VAR
,
932 batadv_uev_type_str
[type
]);
936 uevent_env
[1] = kasprintf(GFP_ATOMIC
,
937 "%s%s", BATADV_UEV_ACTION_VAR
,
938 batadv_uev_action_str
[action
]);
942 /* If the event is DEL, ignore the data field */
943 if (action
!= BATADV_UEV_DEL
) {
944 uevent_env
[2] = kasprintf(GFP_ATOMIC
,
945 "%s%s", BATADV_UEV_DATA_VAR
, data
);
950 ret
= kobject_uevent_env(bat_kobj
, KOBJ_CHANGE
, uevent_env
);
952 kfree(uevent_env
[0]);
953 kfree(uevent_env
[1]);
954 kfree(uevent_env
[2]);
957 batadv_dbg(BATADV_DBG_BATMAN
, bat_priv
,
958 "Impossible to send uevent for (%s,%s,%s) event (err: %d)\n",
959 batadv_uev_type_str
[type
],
960 batadv_uev_action_str
[action
],
961 (action
== BATADV_UEV_DEL
? "NULL" : data
), ret
);