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/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 "bridge_loop_avoidance.h"
44 #include "hard-interface.h"
45 #include "network-coding.h"
47 #include "soft-interface.h"
49 static struct net_device
*batadv_kobj_to_netdev(struct kobject
*obj
)
51 struct device
*dev
= container_of(obj
->parent
, struct device
, kobj
);
53 return to_net_dev(dev
);
56 static struct batadv_priv
*batadv_kobj_to_batpriv(struct kobject
*obj
)
58 struct net_device
*net_dev
= batadv_kobj_to_netdev(obj
);
60 return netdev_priv(net_dev
);
64 * batadv_vlan_kobj_to_batpriv - convert a vlan kobj in the associated batpriv
65 * @obj: kobject to covert
67 * Return: the associated batadv_priv struct.
69 static struct batadv_priv
*batadv_vlan_kobj_to_batpriv(struct kobject
*obj
)
71 /* VLAN specific attributes are located in the root sysfs folder if they
72 * refer to the untagged VLAN..
74 if (!strcmp(BATADV_SYSFS_IF_MESH_SUBDIR
, obj
->name
))
75 return batadv_kobj_to_batpriv(obj
);
77 /* ..while the attributes for the tagged vlans are located in
78 * the in the corresponding "vlan%VID" subfolder
80 return batadv_kobj_to_batpriv(obj
->parent
);
84 * batadv_kobj_to_vlan - convert a kobj in the associated softif_vlan struct
85 * @bat_priv: the bat priv with all the soft interface information
86 * @obj: kobject to covert
88 * Return: the associated softif_vlan struct if found, NULL otherwise.
90 static struct batadv_softif_vlan
*
91 batadv_kobj_to_vlan(struct batadv_priv
*bat_priv
, struct kobject
*obj
)
93 struct batadv_softif_vlan
*vlan_tmp
, *vlan
= NULL
;
96 hlist_for_each_entry_rcu(vlan_tmp
, &bat_priv
->softif_vlan_list
, list
) {
97 if (vlan_tmp
->kobj
!= obj
)
100 if (!atomic_inc_not_zero(&vlan_tmp
->refcount
))
111 #define BATADV_UEV_TYPE_VAR "BATTYPE="
112 #define BATADV_UEV_ACTION_VAR "BATACTION="
113 #define BATADV_UEV_DATA_VAR "BATDATA="
115 static char *batadv_uev_action_str
[] = {
121 static char *batadv_uev_type_str
[] = {
125 /* Use this, if you have customized show and store functions for vlan attrs */
126 #define BATADV_ATTR_VLAN(_name, _mode, _show, _store) \
127 struct batadv_attribute batadv_attr_vlan_##_name = { \
128 .attr = {.name = __stringify(_name), \
134 /* Use this, if you have customized show and store functions */
135 #define BATADV_ATTR(_name, _mode, _show, _store) \
136 struct batadv_attribute batadv_attr_##_name = { \
137 .attr = {.name = __stringify(_name), \
143 #define BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \
144 ssize_t batadv_store_##_name(struct kobject *kobj, \
145 struct attribute *attr, char *buff, \
148 struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
149 struct batadv_priv *bat_priv = netdev_priv(net_dev); \
151 return __batadv_store_bool_attr(buff, count, _post_func, attr, \
152 &bat_priv->_name, net_dev); \
155 #define BATADV_ATTR_SIF_SHOW_BOOL(_name) \
156 ssize_t batadv_show_##_name(struct kobject *kobj, \
157 struct attribute *attr, char *buff) \
159 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \
161 return sprintf(buff, "%s\n", \
162 atomic_read(&bat_priv->_name) == 0 ? \
163 "disabled" : "enabled"); \
166 /* Use this, if you are going to turn a [name] in the soft-interface
167 * (bat_priv) on or off
169 #define BATADV_ATTR_SIF_BOOL(_name, _mode, _post_func) \
170 static BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \
171 static BATADV_ATTR_SIF_SHOW_BOOL(_name) \
172 static BATADV_ATTR(_name, _mode, batadv_show_##_name, \
173 batadv_store_##_name)
175 #define BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func) \
176 ssize_t batadv_store_##_name(struct kobject *kobj, \
177 struct attribute *attr, char *buff, \
180 struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
181 struct batadv_priv *bat_priv = netdev_priv(net_dev); \
183 return __batadv_store_uint_attr(buff, count, _min, _max, \
185 &bat_priv->_var, net_dev); \
188 #define BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \
189 ssize_t batadv_show_##_name(struct kobject *kobj, \
190 struct attribute *attr, char *buff) \
192 struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \
194 return sprintf(buff, "%i\n", atomic_read(&bat_priv->_var)); \
197 /* Use this, if you are going to set [name] in the soft-interface
198 * (bat_priv) to an unsigned integer value
200 #define BATADV_ATTR_SIF_UINT(_name, _var, _mode, _min, _max, _post_func)\
201 static BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func)\
202 static BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \
203 static BATADV_ATTR(_name, _mode, batadv_show_##_name, \
204 batadv_store_##_name)
206 #define BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \
207 ssize_t batadv_store_vlan_##_name(struct kobject *kobj, \
208 struct attribute *attr, char *buff, \
211 struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\
212 struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \
214 size_t res = __batadv_store_bool_attr(buff, count, _post_func, \
215 attr, &vlan->_name, \
216 bat_priv->soft_iface); \
218 batadv_softif_vlan_free_ref(vlan); \
222 #define BATADV_ATTR_VLAN_SHOW_BOOL(_name) \
223 ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \
224 struct attribute *attr, char *buff) \
226 struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\
227 struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \
229 size_t res = sprintf(buff, "%s\n", \
230 atomic_read(&vlan->_name) == 0 ? \
231 "disabled" : "enabled"); \
233 batadv_softif_vlan_free_ref(vlan); \
237 /* Use this, if you are going to turn a [name] in the vlan struct on or off */
238 #define BATADV_ATTR_VLAN_BOOL(_name, _mode, _post_func) \
239 static BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \
240 static BATADV_ATTR_VLAN_SHOW_BOOL(_name) \
241 static BATADV_ATTR_VLAN(_name, _mode, batadv_show_vlan_##_name, \
242 batadv_store_vlan_##_name)
244 static int batadv_store_bool_attr(char *buff
, size_t count
,
245 struct net_device
*net_dev
,
246 const char *attr_name
, atomic_t
*attr
,
253 if (buff
[count
- 1] == '\n')
254 buff
[count
- 1] = '\0';
256 if ((strncmp(buff
, "1", 2) == 0) ||
257 (strncmp(buff
, "enable", 7) == 0) ||
258 (strncmp(buff
, "enabled", 8) == 0))
261 if ((strncmp(buff
, "0", 2) == 0) ||
262 (strncmp(buff
, "disable", 8) == 0) ||
263 (strncmp(buff
, "disabled", 9) == 0))
267 batadv_info(net_dev
, "%s: Invalid parameter received: %s\n",
272 if (atomic_read(attr
) == enabled
)
275 batadv_info(net_dev
, "%s: Changing from: %s to: %s\n", attr_name
,
276 atomic_read(attr
) == 1 ? "enabled" : "disabled",
277 enabled
== 1 ? "enabled" : "disabled");
281 atomic_set(attr
, (unsigned int)enabled
);
285 static inline ssize_t
286 __batadv_store_bool_attr(char *buff
, size_t count
,
287 void (*post_func
)(struct net_device
*),
288 struct attribute
*attr
,
289 atomic_t
*attr_store
, struct net_device
*net_dev
)
294 ret
= batadv_store_bool_attr(buff
, count
, net_dev
, attr
->name
,
295 attr_store
, &changed
);
296 if (post_func
&& changed
)
302 static int batadv_store_uint_attr(const char *buff
, size_t count
,
303 struct net_device
*net_dev
,
304 const char *attr_name
,
305 unsigned int min
, unsigned int max
,
308 unsigned long uint_val
;
311 ret
= kstrtoul(buff
, 10, &uint_val
);
313 batadv_info(net_dev
, "%s: Invalid parameter received: %s\n",
318 if (uint_val
< min
) {
319 batadv_info(net_dev
, "%s: Value is too small: %lu min: %u\n",
320 attr_name
, uint_val
, min
);
324 if (uint_val
> max
) {
325 batadv_info(net_dev
, "%s: Value is too big: %lu max: %u\n",
326 attr_name
, uint_val
, max
);
330 if (atomic_read(attr
) == uint_val
)
333 batadv_info(net_dev
, "%s: Changing from: %i to: %lu\n",
334 attr_name
, atomic_read(attr
), uint_val
);
336 atomic_set(attr
, uint_val
);
340 static inline ssize_t
341 __batadv_store_uint_attr(const char *buff
, size_t count
,
343 void (*post_func
)(struct net_device
*),
344 const struct attribute
*attr
,
345 atomic_t
*attr_store
, struct net_device
*net_dev
)
349 ret
= batadv_store_uint_attr(buff
, count
, net_dev
, attr
->name
, min
, max
,
351 if (post_func
&& ret
)
357 static ssize_t
batadv_show_bat_algo(struct kobject
*kobj
,
358 struct attribute
*attr
, char *buff
)
360 struct batadv_priv
*bat_priv
= batadv_kobj_to_batpriv(kobj
);
362 return sprintf(buff
, "%s\n", bat_priv
->bat_algo_ops
->name
);
365 static void batadv_post_gw_reselect(struct net_device
*net_dev
)
367 struct batadv_priv
*bat_priv
= netdev_priv(net_dev
);
369 batadv_gw_reselect(bat_priv
);
372 static ssize_t
batadv_show_gw_mode(struct kobject
*kobj
, struct attribute
*attr
,
375 struct batadv_priv
*bat_priv
= batadv_kobj_to_batpriv(kobj
);
378 switch (atomic_read(&bat_priv
->gw_mode
)) {
379 case BATADV_GW_MODE_CLIENT
:
380 bytes_written
= sprintf(buff
, "%s\n",
381 BATADV_GW_MODE_CLIENT_NAME
);
383 case BATADV_GW_MODE_SERVER
:
384 bytes_written
= sprintf(buff
, "%s\n",
385 BATADV_GW_MODE_SERVER_NAME
);
388 bytes_written
= sprintf(buff
, "%s\n",
389 BATADV_GW_MODE_OFF_NAME
);
393 return bytes_written
;
396 static ssize_t
batadv_store_gw_mode(struct kobject
*kobj
,
397 struct attribute
*attr
, char *buff
,
400 struct net_device
*net_dev
= batadv_kobj_to_netdev(kobj
);
401 struct batadv_priv
*bat_priv
= netdev_priv(net_dev
);
402 char *curr_gw_mode_str
;
403 int gw_mode_tmp
= -1;
405 if (buff
[count
- 1] == '\n')
406 buff
[count
- 1] = '\0';
408 if (strncmp(buff
, BATADV_GW_MODE_OFF_NAME
,
409 strlen(BATADV_GW_MODE_OFF_NAME
)) == 0)
410 gw_mode_tmp
= BATADV_GW_MODE_OFF
;
412 if (strncmp(buff
, BATADV_GW_MODE_CLIENT_NAME
,
413 strlen(BATADV_GW_MODE_CLIENT_NAME
)) == 0)
414 gw_mode_tmp
= BATADV_GW_MODE_CLIENT
;
416 if (strncmp(buff
, BATADV_GW_MODE_SERVER_NAME
,
417 strlen(BATADV_GW_MODE_SERVER_NAME
)) == 0)
418 gw_mode_tmp
= BATADV_GW_MODE_SERVER
;
420 if (gw_mode_tmp
< 0) {
422 "Invalid parameter for 'gw mode' setting received: %s\n",
427 if (atomic_read(&bat_priv
->gw_mode
) == gw_mode_tmp
)
430 switch (atomic_read(&bat_priv
->gw_mode
)) {
431 case BATADV_GW_MODE_CLIENT
:
432 curr_gw_mode_str
= BATADV_GW_MODE_CLIENT_NAME
;
434 case BATADV_GW_MODE_SERVER
:
435 curr_gw_mode_str
= BATADV_GW_MODE_SERVER_NAME
;
438 curr_gw_mode_str
= BATADV_GW_MODE_OFF_NAME
;
442 batadv_info(net_dev
, "Changing gw mode from: %s to: %s\n",
443 curr_gw_mode_str
, buff
);
445 /* Invoking batadv_gw_reselect() is not enough to really de-select the
446 * current GW. It will only instruct the gateway client code to perform
447 * a re-election the next time that this is needed.
449 * When gw client mode is being switched off the current GW must be
450 * de-selected explicitly otherwise no GW_ADD uevent is thrown on
451 * client mode re-activation. This is operation is performed in
452 * batadv_gw_check_client_stop().
454 batadv_gw_reselect(bat_priv
);
455 /* always call batadv_gw_check_client_stop() before changing the gateway
458 batadv_gw_check_client_stop(bat_priv
);
459 atomic_set(&bat_priv
->gw_mode
, (unsigned int)gw_mode_tmp
);
460 batadv_gw_tvlv_container_update(bat_priv
);
464 static ssize_t
batadv_show_gw_bwidth(struct kobject
*kobj
,
465 struct attribute
*attr
, char *buff
)
467 struct batadv_priv
*bat_priv
= batadv_kobj_to_batpriv(kobj
);
470 down
= atomic_read(&bat_priv
->gw
.bandwidth_down
);
471 up
= atomic_read(&bat_priv
->gw
.bandwidth_up
);
473 return sprintf(buff
, "%u.%u/%u.%u MBit\n", down
/ 10,
474 down
% 10, up
/ 10, up
% 10);
477 static ssize_t
batadv_store_gw_bwidth(struct kobject
*kobj
,
478 struct attribute
*attr
, char *buff
,
481 struct net_device
*net_dev
= batadv_kobj_to_netdev(kobj
);
483 if (buff
[count
- 1] == '\n')
484 buff
[count
- 1] = '\0';
486 return batadv_gw_bandwidth_set(net_dev
, buff
, count
);
490 * batadv_show_isolation_mark - print the current isolation mark/mask
491 * @kobj: kobject representing the private mesh sysfs directory
492 * @attr: the batman-adv attribute the user is interacting with
493 * @buff: the buffer that will contain the data to send back to the user
495 * Return: the number of bytes written into 'buff' on success or a negative
496 * error code in case of failure
498 static ssize_t
batadv_show_isolation_mark(struct kobject
*kobj
,
499 struct attribute
*attr
, char *buff
)
501 struct batadv_priv
*bat_priv
= batadv_kobj_to_batpriv(kobj
);
503 return sprintf(buff
, "%#.8x/%#.8x\n", bat_priv
->isolation_mark
,
504 bat_priv
->isolation_mark_mask
);
508 * batadv_store_isolation_mark - parse and store the isolation mark/mask entered
510 * @kobj: kobject representing the private mesh sysfs directory
511 * @attr: the batman-adv attribute the user is interacting with
512 * @buff: the buffer containing the user data
513 * @count: number of bytes in the buffer
515 * Return: 'count' on success or a negative error code in case of failure
517 static ssize_t
batadv_store_isolation_mark(struct kobject
*kobj
,
518 struct attribute
*attr
, char *buff
,
521 struct net_device
*net_dev
= batadv_kobj_to_netdev(kobj
);
522 struct batadv_priv
*bat_priv
= netdev_priv(net_dev
);
526 /* parse the mask if it has been specified, otherwise assume the mask is
527 * the biggest possible
530 mask_ptr
= strchr(buff
, '/');
535 /* the mask must be entered in hex base as it is going to be a
536 * bitmask and not a prefix length
538 if (kstrtou32(mask_ptr
, 16, &mask
) < 0)
542 /* the mark can be entered in any base */
543 if (kstrtou32(buff
, 0, &mark
) < 0)
546 bat_priv
->isolation_mark_mask
= mask
;
547 /* erase bits not covered by the mask */
548 bat_priv
->isolation_mark
= mark
& bat_priv
->isolation_mark_mask
;
551 "New skb mark for extended isolation: %#.8x/%#.8x\n",
552 bat_priv
->isolation_mark
, bat_priv
->isolation_mark_mask
);
557 BATADV_ATTR_SIF_BOOL(aggregated_ogms
, S_IRUGO
| S_IWUSR
, NULL
);
558 BATADV_ATTR_SIF_BOOL(bonding
, S_IRUGO
| S_IWUSR
, NULL
);
559 #ifdef CONFIG_BATMAN_ADV_BLA
560 BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance
, S_IRUGO
| S_IWUSR
,
561 batadv_bla_status_update
);
563 #ifdef CONFIG_BATMAN_ADV_DAT
564 BATADV_ATTR_SIF_BOOL(distributed_arp_table
, S_IRUGO
| S_IWUSR
,
565 batadv_dat_status_update
);
567 BATADV_ATTR_SIF_BOOL(fragmentation
, S_IRUGO
| S_IWUSR
, batadv_update_min_mtu
);
568 static BATADV_ATTR(routing_algo
, S_IRUGO
, batadv_show_bat_algo
, NULL
);
569 static BATADV_ATTR(gw_mode
, S_IRUGO
| S_IWUSR
, batadv_show_gw_mode
,
570 batadv_store_gw_mode
);
571 BATADV_ATTR_SIF_UINT(orig_interval
, orig_interval
, S_IRUGO
| S_IWUSR
,
572 2 * BATADV_JITTER
, INT_MAX
, NULL
);
573 BATADV_ATTR_SIF_UINT(hop_penalty
, hop_penalty
, S_IRUGO
| S_IWUSR
, 0,
574 BATADV_TQ_MAX_VALUE
, NULL
);
575 BATADV_ATTR_SIF_UINT(gw_sel_class
, gw_sel_class
, S_IRUGO
| S_IWUSR
, 1,
576 BATADV_TQ_MAX_VALUE
, batadv_post_gw_reselect
);
577 static BATADV_ATTR(gw_bandwidth
, S_IRUGO
| S_IWUSR
, batadv_show_gw_bwidth
,
578 batadv_store_gw_bwidth
);
579 #ifdef CONFIG_BATMAN_ADV_MCAST
580 BATADV_ATTR_SIF_BOOL(multicast_mode
, S_IRUGO
| S_IWUSR
, NULL
);
582 #ifdef CONFIG_BATMAN_ADV_DEBUG
583 BATADV_ATTR_SIF_UINT(log_level
, log_level
, S_IRUGO
| S_IWUSR
, 0,
584 BATADV_DBG_ALL
, NULL
);
586 #ifdef CONFIG_BATMAN_ADV_NC
587 BATADV_ATTR_SIF_BOOL(network_coding
, S_IRUGO
| S_IWUSR
,
588 batadv_nc_status_update
);
590 static BATADV_ATTR(isolation_mark
, S_IRUGO
| S_IWUSR
,
591 batadv_show_isolation_mark
, batadv_store_isolation_mark
);
593 static struct batadv_attribute
*batadv_mesh_attrs
[] = {
594 &batadv_attr_aggregated_ogms
,
595 &batadv_attr_bonding
,
596 #ifdef CONFIG_BATMAN_ADV_BLA
597 &batadv_attr_bridge_loop_avoidance
,
599 #ifdef CONFIG_BATMAN_ADV_DAT
600 &batadv_attr_distributed_arp_table
,
602 #ifdef CONFIG_BATMAN_ADV_MCAST
603 &batadv_attr_multicast_mode
,
605 &batadv_attr_fragmentation
,
606 &batadv_attr_routing_algo
,
607 &batadv_attr_gw_mode
,
608 &batadv_attr_orig_interval
,
609 &batadv_attr_hop_penalty
,
610 &batadv_attr_gw_sel_class
,
611 &batadv_attr_gw_bandwidth
,
612 #ifdef CONFIG_BATMAN_ADV_DEBUG
613 &batadv_attr_log_level
,
615 #ifdef CONFIG_BATMAN_ADV_NC
616 &batadv_attr_network_coding
,
618 &batadv_attr_isolation_mark
,
622 BATADV_ATTR_VLAN_BOOL(ap_isolation
, S_IRUGO
| S_IWUSR
, NULL
);
624 /* array of vlan specific sysfs attributes */
625 static struct batadv_attribute
*batadv_vlan_attrs
[] = {
626 &batadv_attr_vlan_ap_isolation
,
630 int batadv_sysfs_add_meshif(struct net_device
*dev
)
632 struct kobject
*batif_kobject
= &dev
->dev
.kobj
;
633 struct batadv_priv
*bat_priv
= netdev_priv(dev
);
634 struct batadv_attribute
**bat_attr
;
637 bat_priv
->mesh_obj
= kobject_create_and_add(BATADV_SYSFS_IF_MESH_SUBDIR
,
639 if (!bat_priv
->mesh_obj
) {
640 batadv_err(dev
, "Can't add sysfs directory: %s/%s\n", dev
->name
,
641 BATADV_SYSFS_IF_MESH_SUBDIR
);
645 for (bat_attr
= batadv_mesh_attrs
; *bat_attr
; ++bat_attr
) {
646 err
= sysfs_create_file(bat_priv
->mesh_obj
,
647 &((*bat_attr
)->attr
));
649 batadv_err(dev
, "Can't add sysfs file: %s/%s/%s\n",
650 dev
->name
, BATADV_SYSFS_IF_MESH_SUBDIR
,
651 ((*bat_attr
)->attr
).name
);
659 for (bat_attr
= batadv_mesh_attrs
; *bat_attr
; ++bat_attr
)
660 sysfs_remove_file(bat_priv
->mesh_obj
, &((*bat_attr
)->attr
));
662 kobject_put(bat_priv
->mesh_obj
);
663 bat_priv
->mesh_obj
= NULL
;
668 void batadv_sysfs_del_meshif(struct net_device
*dev
)
670 struct batadv_priv
*bat_priv
= netdev_priv(dev
);
671 struct batadv_attribute
**bat_attr
;
673 for (bat_attr
= batadv_mesh_attrs
; *bat_attr
; ++bat_attr
)
674 sysfs_remove_file(bat_priv
->mesh_obj
, &((*bat_attr
)->attr
));
676 kobject_put(bat_priv
->mesh_obj
);
677 bat_priv
->mesh_obj
= NULL
;
681 * batadv_sysfs_add_vlan - add all the needed sysfs objects for the new vlan
682 * @dev: netdev of the mesh interface
683 * @vlan: private data of the newly added VLAN interface
685 * Return: 0 on success and -ENOMEM if any of the structure allocations fails.
687 int batadv_sysfs_add_vlan(struct net_device
*dev
,
688 struct batadv_softif_vlan
*vlan
)
690 char vlan_subdir
[sizeof(BATADV_SYSFS_VLAN_SUBDIR_PREFIX
) + 5];
691 struct batadv_priv
*bat_priv
= netdev_priv(dev
);
692 struct batadv_attribute
**bat_attr
;
695 if (vlan
->vid
& BATADV_VLAN_HAS_TAG
) {
696 sprintf(vlan_subdir
, BATADV_SYSFS_VLAN_SUBDIR_PREFIX
"%hu",
697 vlan
->vid
& VLAN_VID_MASK
);
699 vlan
->kobj
= kobject_create_and_add(vlan_subdir
,
702 batadv_err(dev
, "Can't add sysfs directory: %s/%s\n",
703 dev
->name
, vlan_subdir
);
707 /* the untagged LAN uses the root folder to store its "VLAN
708 * specific attributes"
710 vlan
->kobj
= bat_priv
->mesh_obj
;
711 kobject_get(bat_priv
->mesh_obj
);
714 for (bat_attr
= batadv_vlan_attrs
; *bat_attr
; ++bat_attr
) {
715 err
= sysfs_create_file(vlan
->kobj
,
716 &((*bat_attr
)->attr
));
718 batadv_err(dev
, "Can't add sysfs file: %s/%s/%s\n",
719 dev
->name
, vlan_subdir
,
720 ((*bat_attr
)->attr
).name
);
728 for (bat_attr
= batadv_vlan_attrs
; *bat_attr
; ++bat_attr
)
729 sysfs_remove_file(vlan
->kobj
, &((*bat_attr
)->attr
));
731 kobject_put(vlan
->kobj
);
738 * batadv_sysfs_del_vlan - remove all the sysfs objects for a given VLAN
739 * @bat_priv: the bat priv with all the soft interface information
740 * @vlan: the private data of the VLAN to destroy
742 void batadv_sysfs_del_vlan(struct batadv_priv
*bat_priv
,
743 struct batadv_softif_vlan
*vlan
)
745 struct batadv_attribute
**bat_attr
;
747 for (bat_attr
= batadv_vlan_attrs
; *bat_attr
; ++bat_attr
)
748 sysfs_remove_file(vlan
->kobj
, &((*bat_attr
)->attr
));
750 kobject_put(vlan
->kobj
);
754 static ssize_t
batadv_show_mesh_iface(struct kobject
*kobj
,
755 struct attribute
*attr
, char *buff
)
757 struct net_device
*net_dev
= batadv_kobj_to_netdev(kobj
);
758 struct batadv_hard_iface
*hard_iface
;
762 hard_iface
= batadv_hardif_get_by_netdev(net_dev
);
766 if (hard_iface
->if_status
== BATADV_IF_NOT_IN_USE
)
769 ifname
= hard_iface
->soft_iface
->name
;
771 length
= sprintf(buff
, "%s\n", ifname
);
773 batadv_hardif_free_ref(hard_iface
);
778 static ssize_t
batadv_store_mesh_iface(struct kobject
*kobj
,
779 struct attribute
*attr
, char *buff
,
782 struct net_device
*net_dev
= batadv_kobj_to_netdev(kobj
);
783 struct batadv_hard_iface
*hard_iface
;
787 hard_iface
= batadv_hardif_get_by_netdev(net_dev
);
791 if (buff
[count
- 1] == '\n')
792 buff
[count
- 1] = '\0';
794 if (strlen(buff
) >= IFNAMSIZ
) {
795 pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n",
797 batadv_hardif_free_ref(hard_iface
);
801 if (strncmp(buff
, "none", 4) == 0)
802 status_tmp
= BATADV_IF_NOT_IN_USE
;
804 status_tmp
= BATADV_IF_I_WANT_YOU
;
806 if (hard_iface
->if_status
== status_tmp
)
809 if ((hard_iface
->soft_iface
) &&
810 (strncmp(hard_iface
->soft_iface
->name
, buff
, IFNAMSIZ
) == 0))
815 if (status_tmp
== BATADV_IF_NOT_IN_USE
) {
816 batadv_hardif_disable_interface(hard_iface
,
817 BATADV_IF_CLEANUP_AUTO
);
821 /* if the interface already is in use */
822 if (hard_iface
->if_status
!= BATADV_IF_NOT_IN_USE
)
823 batadv_hardif_disable_interface(hard_iface
,
824 BATADV_IF_CLEANUP_AUTO
);
826 ret
= batadv_hardif_enable_interface(hard_iface
, buff
);
831 batadv_hardif_free_ref(hard_iface
);
835 static ssize_t
batadv_show_iface_status(struct kobject
*kobj
,
836 struct attribute
*attr
, char *buff
)
838 struct net_device
*net_dev
= batadv_kobj_to_netdev(kobj
);
839 struct batadv_hard_iface
*hard_iface
;
842 hard_iface
= batadv_hardif_get_by_netdev(net_dev
);
846 switch (hard_iface
->if_status
) {
847 case BATADV_IF_TO_BE_REMOVED
:
848 length
= sprintf(buff
, "disabling\n");
850 case BATADV_IF_INACTIVE
:
851 length
= sprintf(buff
, "inactive\n");
853 case BATADV_IF_ACTIVE
:
854 length
= sprintf(buff
, "active\n");
856 case BATADV_IF_TO_BE_ACTIVATED
:
857 length
= sprintf(buff
, "enabling\n");
859 case BATADV_IF_NOT_IN_USE
:
861 length
= sprintf(buff
, "not in use\n");
865 batadv_hardif_free_ref(hard_iface
);
870 static BATADV_ATTR(mesh_iface
, S_IRUGO
| S_IWUSR
, batadv_show_mesh_iface
,
871 batadv_store_mesh_iface
);
872 static BATADV_ATTR(iface_status
, S_IRUGO
, batadv_show_iface_status
, NULL
);
874 static struct batadv_attribute
*batadv_batman_attrs
[] = {
875 &batadv_attr_mesh_iface
,
876 &batadv_attr_iface_status
,
880 int batadv_sysfs_add_hardif(struct kobject
**hardif_obj
, struct net_device
*dev
)
882 struct kobject
*hardif_kobject
= &dev
->dev
.kobj
;
883 struct batadv_attribute
**bat_attr
;
886 *hardif_obj
= kobject_create_and_add(BATADV_SYSFS_IF_BAT_SUBDIR
,
890 batadv_err(dev
, "Can't add sysfs directory: %s/%s\n", dev
->name
,
891 BATADV_SYSFS_IF_BAT_SUBDIR
);
895 for (bat_attr
= batadv_batman_attrs
; *bat_attr
; ++bat_attr
) {
896 err
= sysfs_create_file(*hardif_obj
, &((*bat_attr
)->attr
));
898 batadv_err(dev
, "Can't add sysfs file: %s/%s/%s\n",
899 dev
->name
, BATADV_SYSFS_IF_BAT_SUBDIR
,
900 ((*bat_attr
)->attr
).name
);
908 for (bat_attr
= batadv_batman_attrs
; *bat_attr
; ++bat_attr
)
909 sysfs_remove_file(*hardif_obj
, &((*bat_attr
)->attr
));
914 void batadv_sysfs_del_hardif(struct kobject
**hardif_obj
)
916 kobject_put(*hardif_obj
);
920 int batadv_throw_uevent(struct batadv_priv
*bat_priv
, enum batadv_uev_type type
,
921 enum batadv_uev_action action
, const char *data
)
924 struct kobject
*bat_kobj
;
925 char *uevent_env
[4] = { NULL
, NULL
, NULL
, NULL
};
927 bat_kobj
= &bat_priv
->soft_iface
->dev
.kobj
;
929 uevent_env
[0] = kasprintf(GFP_ATOMIC
,
930 "%s%s", BATADV_UEV_TYPE_VAR
,
931 batadv_uev_type_str
[type
]);
935 uevent_env
[1] = kasprintf(GFP_ATOMIC
,
936 "%s%s", BATADV_UEV_ACTION_VAR
,
937 batadv_uev_action_str
[action
]);
941 /* If the event is DEL, ignore the data field */
942 if (action
!= BATADV_UEV_DEL
) {
943 uevent_env
[2] = kasprintf(GFP_ATOMIC
,
944 "%s%s", BATADV_UEV_DATA_VAR
, data
);
949 ret
= kobject_uevent_env(bat_kobj
, KOBJ_CHANGE
, uevent_env
);
951 kfree(uevent_env
[0]);
952 kfree(uevent_env
[1]);
953 kfree(uevent_env
[2]);
956 batadv_dbg(BATADV_DBG_BATMAN
, bat_priv
,
957 "Impossible to send uevent for (%s,%s,%s) event (err: %d)\n",
958 batadv_uev_type_str
[type
],
959 batadv_uev_action_str
[action
],
960 (action
== BATADV_UEV_DEL
? "NULL" : data
), ret
);