1 /* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors:
3 * Marek Lindner, Simon Wunderlich
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, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 #include "soft-interface.h"
22 #include "hard-interface.h"
23 #include "distributed-arp-table.h"
27 #include "translation-table.h"
29 #include "gateway_common.h"
30 #include "gateway_client.h"
32 #include "originator.h"
33 #include <linux/slab.h>
34 #include <linux/ethtool.h>
35 #include <linux/etherdevice.h>
36 #include <linux/if_vlan.h>
37 #include "bridge_loop_avoidance.h"
38 #include "network-coding.h"
41 static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd);
42 static void batadv_get_drvinfo(struct net_device *dev,
43 struct ethtool_drvinfo *info);
44 static u32 batadv_get_msglevel(struct net_device *dev);
45 static void batadv_set_msglevel(struct net_device *dev, u32 value);
46 static u32 batadv_get_link(struct net_device *dev);
47 static void batadv_get_strings(struct net_device *dev, u32 stringset, u8 *data);
48 static void batadv_get_ethtool_stats(struct net_device *dev,
49 struct ethtool_stats *stats, u64 *data);
50 static int batadv_get_sset_count(struct net_device *dev, int stringset);
52 static const struct ethtool_ops batadv_ethtool_ops = {
53 .get_settings = batadv_get_settings,
54 .get_drvinfo = batadv_get_drvinfo,
55 .get_msglevel = batadv_get_msglevel,
56 .set_msglevel = batadv_set_msglevel,
57 .get_link = batadv_get_link,
58 .get_strings = batadv_get_strings,
59 .get_ethtool_stats = batadv_get_ethtool_stats,
60 .get_sset_count = batadv_get_sset_count,
63 int batadv_skb_head_push(struct sk_buff *skb, unsigned int len)
67 /* TODO: We must check if we can release all references to non-payload
68 * data using skb_header_release in our skbs to allow skb_cow_header to
69 * work optimally. This means that those skbs are not allowed to read
70 * or write any data which is before the current position of skb->data
71 * after that call and thus allow other skbs with the same data buffer
72 * to write freely in that area.
74 result = skb_cow_head(skb, len);
82 static int batadv_interface_open(struct net_device *dev)
84 netif_start_queue(dev);
88 static int batadv_interface_release(struct net_device *dev)
90 netif_stop_queue(dev);
94 static struct net_device_stats *batadv_interface_stats(struct net_device *dev)
96 struct batadv_priv *bat_priv = netdev_priv(dev);
97 struct net_device_stats *stats = &bat_priv->stats;
99 stats->tx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_TX);
100 stats->tx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_TX_BYTES);
101 stats->tx_dropped = batadv_sum_counter(bat_priv, BATADV_CNT_TX_DROPPED);
102 stats->rx_packets = batadv_sum_counter(bat_priv, BATADV_CNT_RX);
103 stats->rx_bytes = batadv_sum_counter(bat_priv, BATADV_CNT_RX_BYTES);
107 static int batadv_interface_set_mac_addr(struct net_device *dev, void *p)
109 struct batadv_priv *bat_priv = netdev_priv(dev);
110 struct sockaddr *addr = p;
111 uint8_t old_addr[ETH_ALEN];
113 if (!is_valid_ether_addr(addr->sa_data))
114 return -EADDRNOTAVAIL;
116 memcpy(old_addr, dev->dev_addr, ETH_ALEN);
117 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
119 /* only modify transtable if it has been initialized before */
120 if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE) {
121 batadv_tt_local_remove(bat_priv, old_addr,
122 "mac address changed", false);
123 batadv_tt_local_add(dev, addr->sa_data, BATADV_NULL_IFINDEX);
129 static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu)
132 if ((new_mtu < 68) || (new_mtu > batadv_hardif_min_mtu(dev)))
141 * batadv_interface_set_rx_mode - set the rx mode of a device
142 * @dev: registered network device to modify
144 * We do not actually need to set any rx filters for the virtual batman
145 * soft interface. However a dummy handler enables a user to set static
146 * multicast listeners for instance.
148 static void batadv_interface_set_rx_mode(struct net_device *dev)
152 static int batadv_interface_tx(struct sk_buff *skb,
153 struct net_device *soft_iface)
155 struct ethhdr *ethhdr = (struct ethhdr *)skb->data;
156 struct batadv_priv *bat_priv = netdev_priv(soft_iface);
157 struct batadv_hard_iface *primary_if = NULL;
158 struct batadv_bcast_packet *bcast_packet;
159 struct vlan_ethhdr *vhdr;
160 __be16 ethertype = htons(ETH_P_BATMAN);
161 static const uint8_t stp_addr[ETH_ALEN] = {0x01, 0x80, 0xC2, 0x00,
163 static const uint8_t ectp_addr[ETH_ALEN] = {0xCF, 0x00, 0x00, 0x00,
165 unsigned int header_len = 0;
166 int data_len = skb->len, ret;
167 unsigned short vid __maybe_unused = BATADV_NO_FLAGS;
168 bool do_bcast = false;
170 unsigned long brd_delay = 1;
172 if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
175 soft_iface->trans_start = jiffies;
177 switch (ntohs(ethhdr->h_proto)) {
179 vhdr = (struct vlan_ethhdr *)skb->data;
180 vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
181 vid |= BATADV_VLAN_HAS_TAG;
183 if (vhdr->h_vlan_encapsulated_proto != ethertype)
191 if (batadv_bla_tx(bat_priv, skb, vid))
194 /* skb->data might have been reallocated by batadv_bla_tx() */
195 ethhdr = (struct ethhdr *)skb->data;
197 /* Register the client MAC in the transtable */
198 if (!is_multicast_ether_addr(ethhdr->h_source))
199 batadv_tt_local_add(soft_iface, ethhdr->h_source, skb->skb_iif);
201 /* don't accept stp packets. STP does not help in meshes.
202 * better use the bridge loop avoidance ...
204 * The same goes for ECTP sent at least by some Cisco Switches,
205 * it might confuse the mesh when used with bridge loop avoidance.
207 if (batadv_compare_eth(ethhdr->h_dest, stp_addr))
210 if (batadv_compare_eth(ethhdr->h_dest, ectp_addr))
213 if (is_multicast_ether_addr(ethhdr->h_dest)) {
216 switch (atomic_read(&bat_priv->gw_mode)) {
217 case BATADV_GW_MODE_SERVER:
218 /* gateway servers should not send dhcp
219 * requests into the mesh
221 ret = batadv_gw_is_dhcp_target(skb, &header_len);
225 case BATADV_GW_MODE_CLIENT:
226 /* gateway clients should send dhcp requests
227 * via unicast to their gateway
229 ret = batadv_gw_is_dhcp_target(skb, &header_len);
233 case BATADV_GW_MODE_OFF:
238 /* reminder: ethhdr might have become unusable from here on
239 * (batadv_gw_is_dhcp_target() might have reallocated skb data)
243 batadv_skb_set_priority(skb, 0);
245 /* ethernet packet should be broadcasted */
247 primary_if = batadv_primary_if_get_selected(bat_priv);
251 /* in case of ARP request, we do not immediately broadcasti the
252 * packet, instead we first wait for DAT to try to retrieve the
255 if (batadv_dat_snoop_outgoing_arp_request(bat_priv, skb))
256 brd_delay = msecs_to_jiffies(ARP_REQ_DELAY);
258 if (batadv_skb_head_push(skb, sizeof(*bcast_packet)) < 0)
261 bcast_packet = (struct batadv_bcast_packet *)skb->data;
262 bcast_packet->header.version = BATADV_COMPAT_VERSION;
263 bcast_packet->header.ttl = BATADV_TTL;
265 /* batman packet type: broadcast */
266 bcast_packet->header.packet_type = BATADV_BCAST;
267 bcast_packet->reserved = 0;
269 /* hw address of first interface is the orig mac because only
270 * this mac is known throughout the mesh
272 memcpy(bcast_packet->orig,
273 primary_if->net_dev->dev_addr, ETH_ALEN);
275 /* set broadcast sequence number */
276 seqno = atomic_inc_return(&bat_priv->bcast_seqno);
277 bcast_packet->seqno = htonl(seqno);
279 batadv_add_bcast_packet_to_list(bat_priv, skb, brd_delay);
281 /* a copy is stored in the bcast list, therefore removing
288 if (atomic_read(&bat_priv->gw_mode) != BATADV_GW_MODE_OFF) {
289 ret = batadv_gw_out_of_range(bat_priv, skb);
294 if (batadv_dat_snoop_outgoing_arp_request(bat_priv, skb))
297 batadv_dat_snoop_outgoing_arp_reply(bat_priv, skb);
299 ret = batadv_send_skb_unicast(bat_priv, skb);
304 batadv_inc_counter(bat_priv, BATADV_CNT_TX);
305 batadv_add_counter(bat_priv, BATADV_CNT_TX_BYTES, data_len);
311 batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED);
314 batadv_hardif_free_ref(primary_if);
318 void batadv_interface_rx(struct net_device *soft_iface,
319 struct sk_buff *skb, struct batadv_hard_iface *recv_if,
320 int hdr_size, struct batadv_orig_node *orig_node)
322 struct batadv_priv *bat_priv = netdev_priv(soft_iface);
323 struct ethhdr *ethhdr;
324 struct vlan_ethhdr *vhdr;
325 struct batadv_header *batadv_header = (struct batadv_header *)skb->data;
326 unsigned short vid __maybe_unused = BATADV_NO_FLAGS;
327 __be16 ethertype = htons(ETH_P_BATMAN);
330 is_bcast = (batadv_header->packet_type == BATADV_BCAST);
332 /* check if enough space is available for pulling, and pull */
333 if (!pskb_may_pull(skb, hdr_size))
336 skb_pull_rcsum(skb, hdr_size);
337 skb_reset_mac_header(skb);
339 ethhdr = eth_hdr(skb);
341 switch (ntohs(ethhdr->h_proto)) {
343 vhdr = (struct vlan_ethhdr *)skb->data;
344 vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK;
345 vid |= BATADV_VLAN_HAS_TAG;
347 if (vhdr->h_vlan_encapsulated_proto != ethertype)
355 /* skb->dev & skb->pkt_type are set here */
356 if (unlikely(!pskb_may_pull(skb, ETH_HLEN)))
358 skb->protocol = eth_type_trans(skb, soft_iface);
360 /* should not be necessary anymore as we use skb_pull_rcsum()
361 * TODO: please verify this and remove this TODO
362 * -- Dec 21st 2009, Simon Wunderlich
365 /* skb->ip_summed = CHECKSUM_UNNECESSARY; */
367 batadv_inc_counter(bat_priv, BATADV_CNT_RX);
368 batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES,
369 skb->len + ETH_HLEN);
371 soft_iface->last_rx = jiffies;
373 /* Let the bridge loop avoidance check the packet. If will
374 * not handle it, we can safely push it up.
376 if (batadv_bla_rx(bat_priv, skb, vid, is_bcast))
380 batadv_tt_add_temporary_global_entry(bat_priv, orig_node,
383 if (batadv_is_ap_isolated(bat_priv, ethhdr->h_source, ethhdr->h_dest))
395 /* batman-adv network devices have devices nesting below it and are a special
396 * "super class" of normal network devices; split their locks off into a
397 * separate class since they always nest.
399 static struct lock_class_key batadv_netdev_xmit_lock_key;
400 static struct lock_class_key batadv_netdev_addr_lock_key;
403 * batadv_set_lockdep_class_one - Set lockdep class for a single tx queue
404 * @dev: device which owns the tx queue
405 * @txq: tx queue to modify
406 * @_unused: always NULL
408 static void batadv_set_lockdep_class_one(struct net_device *dev,
409 struct netdev_queue *txq,
412 lockdep_set_class(&txq->_xmit_lock, &batadv_netdev_xmit_lock_key);
416 * batadv_set_lockdep_class - Set txq and addr_list lockdep class
417 * @dev: network device to modify
419 static void batadv_set_lockdep_class(struct net_device *dev)
421 lockdep_set_class(&dev->addr_list_lock, &batadv_netdev_addr_lock_key);
422 netdev_for_each_tx_queue(dev, batadv_set_lockdep_class_one, NULL);
426 * batadv_softif_destroy_finish - cleans up the remains of a softif
427 * @work: work queue item
429 * Free the parts of the soft interface which can not be removed under
430 * rtnl lock (to prevent deadlock situations).
432 static void batadv_softif_destroy_finish(struct work_struct *work)
434 struct batadv_priv *bat_priv;
435 struct net_device *soft_iface;
437 bat_priv = container_of(work, struct batadv_priv,
439 soft_iface = bat_priv->soft_iface;
441 batadv_sysfs_del_meshif(soft_iface);
444 unregister_netdevice(soft_iface);
449 * batadv_softif_init_late - late stage initialization of soft interface
450 * @dev: registered network device to modify
452 * Returns error code on failures
454 static int batadv_softif_init_late(struct net_device *dev)
456 struct batadv_priv *bat_priv;
457 uint32_t random_seqno;
459 size_t cnt_len = sizeof(uint64_t) * BATADV_CNT_NUM;
461 batadv_set_lockdep_class(dev);
463 bat_priv = netdev_priv(dev);
464 bat_priv->soft_iface = dev;
465 INIT_WORK(&bat_priv->cleanup_work, batadv_softif_destroy_finish);
467 /* batadv_interface_stats() needs to be available as soon as
468 * register_netdevice() has been called
470 bat_priv->bat_counters = __alloc_percpu(cnt_len, __alignof__(uint64_t));
471 if (!bat_priv->bat_counters)
474 atomic_set(&bat_priv->aggregated_ogms, 1);
475 atomic_set(&bat_priv->bonding, 0);
476 #ifdef CONFIG_BATMAN_ADV_BLA
477 atomic_set(&bat_priv->bridge_loop_avoidance, 0);
479 #ifdef CONFIG_BATMAN_ADV_DAT
480 atomic_set(&bat_priv->distributed_arp_table, 1);
482 atomic_set(&bat_priv->ap_isolation, 0);
483 atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF);
484 atomic_set(&bat_priv->gw_sel_class, 20);
485 atomic_set(&bat_priv->gw.bandwidth_down, 100);
486 atomic_set(&bat_priv->gw.bandwidth_up, 20);
487 atomic_set(&bat_priv->orig_interval, 1000);
488 atomic_set(&bat_priv->hop_penalty, 30);
489 #ifdef CONFIG_BATMAN_ADV_DEBUG
490 atomic_set(&bat_priv->log_level, 0);
492 atomic_set(&bat_priv->fragmentation, 1);
493 atomic_set(&bat_priv->bcast_queue_left, BATADV_BCAST_QUEUE_LEN);
494 atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN);
496 atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE);
497 atomic_set(&bat_priv->bcast_seqno, 1);
498 atomic_set(&bat_priv->tt.vn, 0);
499 atomic_set(&bat_priv->tt.local_changes, 0);
500 atomic_set(&bat_priv->tt.ogm_append_cnt, 0);
501 #ifdef CONFIG_BATMAN_ADV_BLA
502 atomic_set(&bat_priv->bla.num_requests, 0);
504 bat_priv->tt.last_changeset = NULL;
505 bat_priv->tt.last_changeset_len = 0;
507 /* randomize initial seqno to avoid collision */
508 get_random_bytes(&random_seqno, sizeof(random_seqno));
509 atomic_set(&bat_priv->frag_seqno, random_seqno);
511 bat_priv->primary_if = NULL;
512 bat_priv->num_ifaces = 0;
514 batadv_nc_init_bat_priv(bat_priv);
516 ret = batadv_algo_select(bat_priv, batadv_routing_algo);
518 goto free_bat_counters;
520 ret = batadv_debugfs_add_meshif(dev);
522 goto free_bat_counters;
524 ret = batadv_mesh_init(dev);
531 batadv_debugfs_del_meshif(dev);
533 free_percpu(bat_priv->bat_counters);
534 bat_priv->bat_counters = NULL;
540 * batadv_softif_slave_add - Add a slave interface to a batadv_soft_interface
541 * @dev: batadv_soft_interface used as master interface
542 * @slave_dev: net_device which should become the slave interface
544 * Return 0 if successful or error otherwise.
546 static int batadv_softif_slave_add(struct net_device *dev,
547 struct net_device *slave_dev)
549 struct batadv_hard_iface *hard_iface;
552 hard_iface = batadv_hardif_get_by_netdev(slave_dev);
553 if (!hard_iface || hard_iface->soft_iface != NULL)
556 ret = batadv_hardif_enable_interface(hard_iface, dev->name);
560 batadv_hardif_free_ref(hard_iface);
565 * batadv_softif_slave_del - Delete a slave iface from a batadv_soft_interface
566 * @dev: batadv_soft_interface used as master interface
567 * @slave_dev: net_device which should be removed from the master interface
569 * Return 0 if successful or error otherwise.
571 static int batadv_softif_slave_del(struct net_device *dev,
572 struct net_device *slave_dev)
574 struct batadv_hard_iface *hard_iface;
577 hard_iface = batadv_hardif_get_by_netdev(slave_dev);
579 if (!hard_iface || hard_iface->soft_iface != dev)
582 batadv_hardif_disable_interface(hard_iface, BATADV_IF_CLEANUP_KEEP);
587 batadv_hardif_free_ref(hard_iface);
591 static const struct net_device_ops batadv_netdev_ops = {
592 .ndo_init = batadv_softif_init_late,
593 .ndo_open = batadv_interface_open,
594 .ndo_stop = batadv_interface_release,
595 .ndo_get_stats = batadv_interface_stats,
596 .ndo_set_mac_address = batadv_interface_set_mac_addr,
597 .ndo_change_mtu = batadv_interface_change_mtu,
598 .ndo_set_rx_mode = batadv_interface_set_rx_mode,
599 .ndo_start_xmit = batadv_interface_tx,
600 .ndo_validate_addr = eth_validate_addr,
601 .ndo_add_slave = batadv_softif_slave_add,
602 .ndo_del_slave = batadv_softif_slave_del,
606 * batadv_softif_free - Deconstructor of batadv_soft_interface
607 * @dev: Device to cleanup and remove
609 static void batadv_softif_free(struct net_device *dev)
611 batadv_debugfs_del_meshif(dev);
612 batadv_mesh_free(dev);
614 /* some scheduled RCU callbacks need the bat_priv struct to accomplish
615 * their tasks. Wait for them all to be finished before freeing the
616 * netdev and its private data (bat_priv)
624 * batadv_softif_init_early - early stage initialization of soft interface
625 * @dev: registered network device to modify
627 static void batadv_softif_init_early(struct net_device *dev)
629 struct batadv_priv *priv = netdev_priv(dev);
633 dev->netdev_ops = &batadv_netdev_ops;
634 dev->destructor = batadv_softif_free;
635 dev->tx_queue_len = 0;
637 /* can't call min_mtu, because the needed variables
638 * have not been initialized yet
640 dev->mtu = ETH_DATA_LEN;
641 /* reserve more space in the skbuff for our header */
642 dev->hard_header_len = batadv_max_header_len();
644 /* generate random address */
645 eth_hw_addr_random(dev);
647 SET_ETHTOOL_OPS(dev, &batadv_ethtool_ops);
649 memset(priv, 0, sizeof(*priv));
652 struct net_device *batadv_softif_create(const char *name)
654 struct net_device *soft_iface;
657 soft_iface = alloc_netdev(sizeof(struct batadv_priv), name,
658 batadv_softif_init_early);
662 soft_iface->rtnl_link_ops = &batadv_link_ops;
664 ret = register_netdevice(soft_iface);
666 pr_err("Unable to register the batman interface '%s': %i\n",
668 free_netdev(soft_iface);
676 * batadv_softif_destroy_sysfs - deletion of batadv_soft_interface via sysfs
677 * @soft_iface: the to-be-removed batman-adv interface
679 void batadv_softif_destroy_sysfs(struct net_device *soft_iface)
681 struct batadv_priv *bat_priv = netdev_priv(soft_iface);
683 queue_work(batadv_event_workqueue, &bat_priv->cleanup_work);
687 * batadv_softif_destroy_netlink - deletion of batadv_soft_interface via netlink
688 * @soft_iface: the to-be-removed batman-adv interface
689 * @head: list pointer
691 static void batadv_softif_destroy_netlink(struct net_device *soft_iface,
692 struct list_head *head)
694 struct batadv_hard_iface *hard_iface;
696 list_for_each_entry(hard_iface, &batadv_hardif_list, list) {
697 if (hard_iface->soft_iface == soft_iface)
698 batadv_hardif_disable_interface(hard_iface,
699 BATADV_IF_CLEANUP_KEEP);
702 batadv_sysfs_del_meshif(soft_iface);
703 unregister_netdevice_queue(soft_iface, head);
706 int batadv_softif_is_valid(const struct net_device *net_dev)
708 if (net_dev->netdev_ops->ndo_start_xmit == batadv_interface_tx)
714 struct rtnl_link_ops batadv_link_ops __read_mostly = {
716 .priv_size = sizeof(struct batadv_priv),
717 .setup = batadv_softif_init_early,
718 .dellink = batadv_softif_destroy_netlink,
722 static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
725 cmd->advertising = 0;
726 ethtool_cmd_speed_set(cmd, SPEED_10);
727 cmd->duplex = DUPLEX_FULL;
729 cmd->phy_address = 0;
730 cmd->transceiver = XCVR_INTERNAL;
731 cmd->autoneg = AUTONEG_DISABLE;
738 static void batadv_get_drvinfo(struct net_device *dev,
739 struct ethtool_drvinfo *info)
741 strlcpy(info->driver, "B.A.T.M.A.N. advanced", sizeof(info->driver));
742 strlcpy(info->version, BATADV_SOURCE_VERSION, sizeof(info->version));
743 strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
744 strlcpy(info->bus_info, "batman", sizeof(info->bus_info));
747 static u32 batadv_get_msglevel(struct net_device *dev)
752 static void batadv_set_msglevel(struct net_device *dev, u32 value)
756 static u32 batadv_get_link(struct net_device *dev)
761 /* Inspired by drivers/net/ethernet/dlink/sundance.c:1702
762 * Declare each description string in struct.name[] to get fixed sized buffer
763 * and compile time checking for strings longer than ETH_GSTRING_LEN.
765 static const struct {
766 const char name[ETH_GSTRING_LEN];
767 } batadv_counters_strings[] = {
784 { "frag_fwd_bytes" },
787 { "tt_response_tx" },
788 { "tt_response_rx" },
789 { "tt_roam_adv_tx" },
790 { "tt_roam_adv_rx" },
791 #ifdef CONFIG_BATMAN_ADV_DAT
796 { "dat_cached_reply_tx" },
798 #ifdef CONFIG_BATMAN_ADV_NC
802 { "nc_recode_bytes" },
805 { "nc_decode_bytes" },
806 { "nc_decode_failed" },
811 static void batadv_get_strings(struct net_device *dev, uint32_t stringset,
814 if (stringset == ETH_SS_STATS)
815 memcpy(data, batadv_counters_strings,
816 sizeof(batadv_counters_strings));
819 static void batadv_get_ethtool_stats(struct net_device *dev,
820 struct ethtool_stats *stats,
823 struct batadv_priv *bat_priv = netdev_priv(dev);
826 for (i = 0; i < BATADV_CNT_NUM; i++)
827 data[i] = batadv_sum_counter(bat_priv, i);
830 static int batadv_get_sset_count(struct net_device *dev, int stringset)
832 if (stringset == ETH_SS_STATS)
833 return BATADV_CNT_NUM;