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0b873931 | 1 | /* Copyright (C) 2007-2013 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
2 | * |
3 | * Marek Lindner, Simon Wunderlich | |
4 | * | |
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. | |
8 | * | |
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. | |
13 | * | |
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 | |
17 | * 02110-1301, USA | |
c6c8fea2 SE |
18 | */ |
19 | ||
20 | #include "main.h" | |
21 | #include "soft-interface.h" | |
22 | #include "hard-interface.h" | |
c384ea3e | 23 | #include "distributed-arp-table.h" |
c6c8fea2 SE |
24 | #include "routing.h" |
25 | #include "send.h" | |
b706b13b | 26 | #include "debugfs.h" |
c6c8fea2 | 27 | #include "translation-table.h" |
c6c8fea2 SE |
28 | #include "hash.h" |
29 | #include "gateway_common.h" | |
30 | #include "gateway_client.h" | |
b706b13b | 31 | #include "sysfs.h" |
43676ab5 | 32 | #include "originator.h" |
c6c8fea2 SE |
33 | #include <linux/slab.h> |
34 | #include <linux/ethtool.h> | |
35 | #include <linux/etherdevice.h> | |
36 | #include <linux/if_vlan.h> | |
23721387 | 37 | #include "bridge_loop_avoidance.h" |
d353d8d4 | 38 | #include "network-coding.h" |
c6c8fea2 SE |
39 | |
40 | ||
0294ca0d SE |
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); | |
f8214865 MH |
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); | |
c6c8fea2 | 51 | |
0294ca0d SE |
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, | |
f8214865 MH |
58 | .get_strings = batadv_get_strings, |
59 | .get_ethtool_stats = batadv_get_ethtool_stats, | |
60 | .get_sset_count = batadv_get_sset_count, | |
c6c8fea2 SE |
61 | }; |
62 | ||
04b482a2 | 63 | int batadv_skb_head_push(struct sk_buff *skb, unsigned int len) |
c6c8fea2 SE |
64 | { |
65 | int result; | |
66 | ||
9cfc7bd6 | 67 | /* TODO: We must check if we can release all references to non-payload |
c6c8fea2 SE |
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. | |
73 | */ | |
74 | result = skb_cow_head(skb, len); | |
75 | if (result < 0) | |
76 | return result; | |
77 | ||
78 | skb_push(skb, len); | |
79 | return 0; | |
80 | } | |
81 | ||
0294ca0d | 82 | static int batadv_interface_open(struct net_device *dev) |
c6c8fea2 SE |
83 | { |
84 | netif_start_queue(dev); | |
85 | return 0; | |
86 | } | |
87 | ||
0294ca0d | 88 | static int batadv_interface_release(struct net_device *dev) |
c6c8fea2 SE |
89 | { |
90 | netif_stop_queue(dev); | |
91 | return 0; | |
92 | } | |
93 | ||
0294ca0d | 94 | static struct net_device_stats *batadv_interface_stats(struct net_device *dev) |
c6c8fea2 | 95 | { |
56303d34 | 96 | struct batadv_priv *bat_priv = netdev_priv(dev); |
1c9b0550 ML |
97 | struct net_device_stats *stats = &bat_priv->stats; |
98 | ||
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); | |
104 | return stats; | |
c6c8fea2 SE |
105 | } |
106 | ||
0294ca0d | 107 | static int batadv_interface_set_mac_addr(struct net_device *dev, void *p) |
c6c8fea2 | 108 | { |
56303d34 | 109 | struct batadv_priv *bat_priv = netdev_priv(dev); |
c6c8fea2 | 110 | struct sockaddr *addr = p; |
40a3eb33 | 111 | uint8_t old_addr[ETH_ALEN]; |
c6c8fea2 SE |
112 | |
113 | if (!is_valid_ether_addr(addr->sa_data)) | |
114 | return -EADDRNOTAVAIL; | |
115 | ||
40a3eb33 D |
116 | memcpy(old_addr, dev->dev_addr, ETH_ALEN); |
117 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); | |
118 | ||
015758d0 | 119 | /* only modify transtable if it has been initialized before */ |
39c75a51 | 120 | if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE) { |
c018ad3d | 121 | batadv_tt_local_remove(bat_priv, old_addr, BATADV_NO_FLAGS, |
08c36d3e | 122 | "mac address changed", false); |
c018ad3d AQ |
123 | batadv_tt_local_add(dev, addr->sa_data, BATADV_NO_FLAGS, |
124 | BATADV_NULL_IFINDEX); | |
c6c8fea2 SE |
125 | } |
126 | ||
c6c8fea2 SE |
127 | return 0; |
128 | } | |
129 | ||
0294ca0d | 130 | static int batadv_interface_change_mtu(struct net_device *dev, int new_mtu) |
c6c8fea2 SE |
131 | { |
132 | /* check ranges */ | |
9563877e | 133 | if ((new_mtu < 68) || (new_mtu > batadv_hardif_min_mtu(dev))) |
c6c8fea2 SE |
134 | return -EINVAL; |
135 | ||
136 | dev->mtu = new_mtu; | |
137 | ||
138 | return 0; | |
139 | } | |
140 | ||
a4deee1a LL |
141 | /** |
142 | * batadv_interface_set_rx_mode - set the rx mode of a device | |
143 | * @dev: registered network device to modify | |
144 | * | |
145 | * We do not actually need to set any rx filters for the virtual batman | |
146 | * soft interface. However a dummy handler enables a user to set static | |
147 | * multicast listeners for instance. | |
148 | */ | |
149 | static void batadv_interface_set_rx_mode(struct net_device *dev) | |
150 | { | |
151 | } | |
152 | ||
0294ca0d SE |
153 | static int batadv_interface_tx(struct sk_buff *skb, |
154 | struct net_device *soft_iface) | |
c6c8fea2 | 155 | { |
c018ad3d | 156 | struct ethhdr *ethhdr; |
56303d34 SE |
157 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
158 | struct batadv_hard_iface *primary_if = NULL; | |
96412690 | 159 | struct batadv_bcast_packet *bcast_packet; |
293e9338 | 160 | __be16 ethertype = htons(ETH_P_BATMAN); |
4934ab95 SW |
161 | static const uint8_t stp_addr[ETH_ALEN] = {0x01, 0x80, 0xC2, 0x00, |
162 | 0x00, 0x00}; | |
163 | static const uint8_t ectp_addr[ETH_ALEN] = {0xCF, 0x00, 0x00, 0x00, | |
164 | 0x00, 0x00}; | |
c018ad3d | 165 | struct vlan_ethhdr *vhdr; |
be7af5cf | 166 | unsigned int header_len = 0; |
c6c8fea2 | 167 | int data_len = skb->len, ret; |
c018ad3d | 168 | unsigned long brd_delay = 1; |
a19d3d85 | 169 | bool do_bcast = false, client_added; |
c018ad3d | 170 | unsigned short vid; |
bbb1f90e | 171 | uint32_t seqno; |
c6c8fea2 | 172 | |
39c75a51 | 173 | if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE) |
c6c8fea2 SE |
174 | goto dropped; |
175 | ||
176 | soft_iface->trans_start = jiffies; | |
c018ad3d AQ |
177 | vid = batadv_get_vid(skb, 0); |
178 | ethhdr = (struct ethhdr *)skb->data; | |
c6c8fea2 SE |
179 | |
180 | switch (ntohs(ethhdr->h_proto)) { | |
181 | case ETH_P_8021Q: | |
182 | vhdr = (struct vlan_ethhdr *)skb->data; | |
c6c8fea2 | 183 | |
7e071c79 | 184 | if (vhdr->h_vlan_encapsulated_proto != ethertype) |
c6c8fea2 SE |
185 | break; |
186 | ||
187 | /* fall through */ | |
af5d4f77 | 188 | case ETH_P_BATMAN: |
c6c8fea2 | 189 | goto dropped; |
a7f6ee94 | 190 | } |
c6c8fea2 | 191 | |
08adf151 | 192 | if (batadv_bla_tx(bat_priv, skb, vid)) |
23721387 SW |
193 | goto dropped; |
194 | ||
9d2c9488 LL |
195 | /* skb->data might have been reallocated by batadv_bla_tx() */ |
196 | ethhdr = (struct ethhdr *)skb->data; | |
197 | ||
a73105b8 | 198 | /* Register the client MAC in the transtable */ |
a19d3d85 ML |
199 | if (!is_multicast_ether_addr(ethhdr->h_source)) { |
200 | client_added = batadv_tt_local_add(soft_iface, ethhdr->h_source, | |
201 | vid, skb->skb_iif); | |
202 | if (!client_added) | |
203 | goto dropped; | |
204 | } | |
c6c8fea2 | 205 | |
b1a8c04b SW |
206 | /* don't accept stp packets. STP does not help in meshes. |
207 | * better use the bridge loop avoidance ... | |
4934ab95 SW |
208 | * |
209 | * The same goes for ECTP sent at least by some Cisco Switches, | |
210 | * it might confuse the mesh when used with bridge loop avoidance. | |
b1a8c04b | 211 | */ |
1eda58bf | 212 | if (batadv_compare_eth(ethhdr->h_dest, stp_addr)) |
b1a8c04b SW |
213 | goto dropped; |
214 | ||
4934ab95 SW |
215 | if (batadv_compare_eth(ethhdr->h_dest, ectp_addr)) |
216 | goto dropped; | |
217 | ||
be7af5cf ML |
218 | if (is_multicast_ether_addr(ethhdr->h_dest)) { |
219 | do_bcast = true; | |
c6c8fea2 | 220 | |
be7af5cf | 221 | switch (atomic_read(&bat_priv->gw_mode)) { |
cd646ab1 | 222 | case BATADV_GW_MODE_SERVER: |
be7af5cf | 223 | /* gateway servers should not send dhcp |
9cfc7bd6 SE |
224 | * requests into the mesh |
225 | */ | |
7cf06bc6 | 226 | ret = batadv_gw_is_dhcp_target(skb, &header_len); |
be7af5cf ML |
227 | if (ret) |
228 | goto dropped; | |
229 | break; | |
cd646ab1 | 230 | case BATADV_GW_MODE_CLIENT: |
be7af5cf | 231 | /* gateway clients should send dhcp requests |
9cfc7bd6 SE |
232 | * via unicast to their gateway |
233 | */ | |
7cf06bc6 | 234 | ret = batadv_gw_is_dhcp_target(skb, &header_len); |
be7af5cf ML |
235 | if (ret) |
236 | do_bcast = false; | |
237 | break; | |
cd646ab1 | 238 | case BATADV_GW_MODE_OFF: |
be7af5cf ML |
239 | default: |
240 | break; | |
241 | } | |
9d2c9488 LL |
242 | |
243 | /* reminder: ethhdr might have become unusable from here on | |
244 | * (batadv_gw_is_dhcp_target() might have reallocated skb data) | |
245 | */ | |
c6c8fea2 SE |
246 | } |
247 | ||
c54f38c9 SW |
248 | batadv_skb_set_priority(skb, 0); |
249 | ||
c6c8fea2 SE |
250 | /* ethernet packet should be broadcasted */ |
251 | if (do_bcast) { | |
e5d89254 | 252 | primary_if = batadv_primary_if_get_selected(bat_priv); |
32ae9b22 | 253 | if (!primary_if) |
c6c8fea2 SE |
254 | goto dropped; |
255 | ||
c384ea3e AQ |
256 | /* in case of ARP request, we do not immediately broadcasti the |
257 | * packet, instead we first wait for DAT to try to retrieve the | |
258 | * correct ARP entry | |
259 | */ | |
260 | if (batadv_dat_snoop_outgoing_arp_request(bat_priv, skb)) | |
261 | brd_delay = msecs_to_jiffies(ARP_REQ_DELAY); | |
262 | ||
04b482a2 | 263 | if (batadv_skb_head_push(skb, sizeof(*bcast_packet)) < 0) |
c6c8fea2 SE |
264 | goto dropped; |
265 | ||
96412690 | 266 | bcast_packet = (struct batadv_bcast_packet *)skb->data; |
a40d9b07 SW |
267 | bcast_packet->version = BATADV_COMPAT_VERSION; |
268 | bcast_packet->ttl = BATADV_TTL; | |
c6c8fea2 SE |
269 | |
270 | /* batman packet type: broadcast */ | |
a40d9b07 | 271 | bcast_packet->packet_type = BATADV_BCAST; |
162d549c | 272 | bcast_packet->reserved = 0; |
c6c8fea2 SE |
273 | |
274 | /* hw address of first interface is the orig mac because only | |
9cfc7bd6 SE |
275 | * this mac is known throughout the mesh |
276 | */ | |
c6c8fea2 | 277 | memcpy(bcast_packet->orig, |
32ae9b22 | 278 | primary_if->net_dev->dev_addr, ETH_ALEN); |
c6c8fea2 SE |
279 | |
280 | /* set broadcast sequence number */ | |
bbb1f90e SE |
281 | seqno = atomic_inc_return(&bat_priv->bcast_seqno); |
282 | bcast_packet->seqno = htonl(seqno); | |
c6c8fea2 | 283 | |
c384ea3e | 284 | batadv_add_bcast_packet_to_list(bat_priv, skb, brd_delay); |
c6c8fea2 SE |
285 | |
286 | /* a copy is stored in the bcast list, therefore removing | |
9cfc7bd6 SE |
287 | * the original skb. |
288 | */ | |
c6c8fea2 SE |
289 | kfree_skb(skb); |
290 | ||
291 | /* unicast packet */ | |
292 | } else { | |
cd646ab1 | 293 | if (atomic_read(&bat_priv->gw_mode) != BATADV_GW_MODE_OFF) { |
9d2c9488 | 294 | ret = batadv_gw_out_of_range(bat_priv, skb); |
be7af5cf ML |
295 | if (ret) |
296 | goto dropped; | |
297 | } | |
298 | ||
c384ea3e AQ |
299 | if (batadv_dat_snoop_outgoing_arp_request(bat_priv, skb)) |
300 | goto dropped; | |
301 | ||
302 | batadv_dat_snoop_outgoing_arp_reply(bat_priv, skb); | |
303 | ||
e300d314 LL |
304 | if (is_multicast_ether_addr(ethhdr->h_dest)) |
305 | ret = batadv_send_skb_via_gw(bat_priv, skb, vid); | |
306 | else | |
307 | ret = batadv_send_skb_via_tt(bat_priv, skb, vid); | |
308 | ||
309 | if (ret == NET_XMIT_DROP) | |
c6c8fea2 SE |
310 | goto dropped_freed; |
311 | } | |
312 | ||
1c9b0550 ML |
313 | batadv_inc_counter(bat_priv, BATADV_CNT_TX); |
314 | batadv_add_counter(bat_priv, BATADV_CNT_TX_BYTES, data_len); | |
c6c8fea2 SE |
315 | goto end; |
316 | ||
317 | dropped: | |
318 | kfree_skb(skb); | |
319 | dropped_freed: | |
1c9b0550 | 320 | batadv_inc_counter(bat_priv, BATADV_CNT_TX_DROPPED); |
c6c8fea2 | 321 | end: |
32ae9b22 | 322 | if (primary_if) |
e5d89254 | 323 | batadv_hardif_free_ref(primary_if); |
c6c8fea2 SE |
324 | return NETDEV_TX_OK; |
325 | } | |
326 | ||
04b482a2 | 327 | void batadv_interface_rx(struct net_device *soft_iface, |
56303d34 | 328 | struct sk_buff *skb, struct batadv_hard_iface *recv_if, |
37135173 | 329 | int hdr_size, struct batadv_orig_node *orig_node) |
c6c8fea2 | 330 | { |
a40d9b07 | 331 | struct batadv_bcast_packet *batadv_bcast_packet; |
c018ad3d | 332 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
293e9338 | 333 | __be16 ethertype = htons(ETH_P_BATMAN); |
c018ad3d AQ |
334 | struct vlan_ethhdr *vhdr; |
335 | struct ethhdr *ethhdr; | |
336 | unsigned short vid; | |
2d3f6ccc SW |
337 | bool is_bcast; |
338 | ||
a40d9b07 SW |
339 | batadv_bcast_packet = (struct batadv_bcast_packet *)skb->data; |
340 | is_bcast = (batadv_bcast_packet->packet_type == BATADV_BCAST); | |
c6c8fea2 SE |
341 | |
342 | /* check if enough space is available for pulling, and pull */ | |
343 | if (!pskb_may_pull(skb, hdr_size)) | |
344 | goto dropped; | |
345 | ||
346 | skb_pull_rcsum(skb, hdr_size); | |
347 | skb_reset_mac_header(skb); | |
348 | ||
55883fd1 AQ |
349 | /* clean the netfilter state now that the batman-adv header has been |
350 | * removed | |
351 | */ | |
352 | nf_reset(skb); | |
353 | ||
c018ad3d | 354 | vid = batadv_get_vid(skb, hdr_size); |
7ed4be95 | 355 | ethhdr = eth_hdr(skb); |
c6c8fea2 SE |
356 | |
357 | switch (ntohs(ethhdr->h_proto)) { | |
358 | case ETH_P_8021Q: | |
359 | vhdr = (struct vlan_ethhdr *)skb->data; | |
c6c8fea2 | 360 | |
7e071c79 | 361 | if (vhdr->h_vlan_encapsulated_proto != ethertype) |
c6c8fea2 SE |
362 | break; |
363 | ||
364 | /* fall through */ | |
af5d4f77 | 365 | case ETH_P_BATMAN: |
c6c8fea2 SE |
366 | goto dropped; |
367 | } | |
368 | ||
c6c8fea2 SE |
369 | /* skb->dev & skb->pkt_type are set here */ |
370 | if (unlikely(!pskb_may_pull(skb, ETH_HLEN))) | |
371 | goto dropped; | |
372 | skb->protocol = eth_type_trans(skb, soft_iface); | |
373 | ||
25985edc | 374 | /* should not be necessary anymore as we use skb_pull_rcsum() |
c6c8fea2 | 375 | * TODO: please verify this and remove this TODO |
9cfc7bd6 SE |
376 | * -- Dec 21st 2009, Simon Wunderlich |
377 | */ | |
c6c8fea2 | 378 | |
9cfc7bd6 | 379 | /* skb->ip_summed = CHECKSUM_UNNECESSARY; */ |
c6c8fea2 | 380 | |
1c9b0550 ML |
381 | batadv_inc_counter(bat_priv, BATADV_CNT_RX); |
382 | batadv_add_counter(bat_priv, BATADV_CNT_RX_BYTES, | |
383 | skb->len + ETH_HLEN); | |
c6c8fea2 SE |
384 | |
385 | soft_iface->last_rx = jiffies; | |
386 | ||
74490f96 AQ |
387 | /* Let the bridge loop avoidance check the packet. If will |
388 | * not handle it, we can safely push it up. | |
389 | */ | |
390 | if (batadv_bla_rx(bat_priv, skb, vid, is_bcast)) | |
391 | goto out; | |
392 | ||
37135173 AQ |
393 | if (orig_node) |
394 | batadv_tt_add_temporary_global_entry(bat_priv, orig_node, | |
c018ad3d | 395 | ethhdr->h_source, vid); |
37135173 | 396 | |
b8cbd81d AQ |
397 | if (batadv_is_ap_isolated(bat_priv, ethhdr->h_source, ethhdr->h_dest, |
398 | vid)) | |
59b699cd AQ |
399 | goto dropped; |
400 | ||
c6c8fea2 | 401 | netif_rx(skb); |
ba85fac2 | 402 | goto out; |
c6c8fea2 SE |
403 | |
404 | dropped: | |
405 | kfree_skb(skb); | |
406 | out: | |
407 | return; | |
408 | } | |
409 | ||
5d2c05b2 AQ |
410 | /** |
411 | * batadv_softif_vlan_free_ref - decrease the vlan object refcounter and | |
412 | * possibly free it | |
413 | * @softif_vlan: the vlan object to release | |
414 | */ | |
90f4435d | 415 | void batadv_softif_vlan_free_ref(struct batadv_softif_vlan *softif_vlan) |
5d2c05b2 AQ |
416 | { |
417 | if (atomic_dec_and_test(&softif_vlan->refcount)) | |
418 | kfree_rcu(softif_vlan, rcu); | |
419 | } | |
420 | ||
421 | /** | |
422 | * batadv_softif_vlan_get - get the vlan object for a specific vid | |
423 | * @bat_priv: the bat priv with all the soft interface information | |
424 | * @vid: the identifier of the vlan object to retrieve | |
425 | * | |
426 | * Returns the private data of the vlan matching the vid passed as argument or | |
427 | * NULL otherwise. The refcounter of the returned object is incremented by 1. | |
428 | */ | |
90f4435d AQ |
429 | struct batadv_softif_vlan *batadv_softif_vlan_get(struct batadv_priv *bat_priv, |
430 | unsigned short vid) | |
5d2c05b2 AQ |
431 | { |
432 | struct batadv_softif_vlan *vlan_tmp, *vlan = NULL; | |
433 | ||
434 | rcu_read_lock(); | |
435 | hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) { | |
436 | if (vlan_tmp->vid != vid) | |
437 | continue; | |
438 | ||
439 | if (!atomic_inc_not_zero(&vlan_tmp->refcount)) | |
440 | continue; | |
441 | ||
442 | vlan = vlan_tmp; | |
443 | break; | |
444 | } | |
445 | rcu_read_unlock(); | |
446 | ||
447 | return vlan; | |
448 | } | |
449 | ||
450 | /** | |
451 | * batadv_create_vlan - allocate the needed resources for a new vlan | |
452 | * @bat_priv: the bat priv with all the soft interface information | |
453 | * @vid: the VLAN identifier | |
454 | * | |
455 | * Returns 0 on success, a negative error otherwise. | |
456 | */ | |
457 | int batadv_softif_create_vlan(struct batadv_priv *bat_priv, unsigned short vid) | |
458 | { | |
459 | struct batadv_softif_vlan *vlan; | |
90f4435d | 460 | int err; |
5d2c05b2 AQ |
461 | |
462 | vlan = batadv_softif_vlan_get(bat_priv, vid); | |
463 | if (vlan) { | |
464 | batadv_softif_vlan_free_ref(vlan); | |
465 | return -EEXIST; | |
466 | } | |
467 | ||
468 | vlan = kzalloc(sizeof(*vlan), GFP_ATOMIC); | |
469 | if (!vlan) | |
470 | return -ENOMEM; | |
471 | ||
472 | vlan->vid = vid; | |
473 | atomic_set(&vlan->refcount, 1); | |
474 | ||
b8cbd81d AQ |
475 | atomic_set(&vlan->ap_isolation, 0); |
476 | ||
90f4435d AQ |
477 | err = batadv_sysfs_add_vlan(bat_priv->soft_iface, vlan); |
478 | if (err) { | |
479 | kfree(vlan); | |
480 | return err; | |
481 | } | |
482 | ||
5d2c05b2 AQ |
483 | /* add a new TT local entry. This one will be marked with the NOPURGE |
484 | * flag | |
485 | */ | |
486 | batadv_tt_local_add(bat_priv->soft_iface, | |
487 | bat_priv->soft_iface->dev_addr, vid, | |
488 | BATADV_NULL_IFINDEX); | |
489 | ||
490 | spin_lock_bh(&bat_priv->softif_vlan_list_lock); | |
491 | hlist_add_head_rcu(&vlan->list, &bat_priv->softif_vlan_list); | |
492 | spin_unlock_bh(&bat_priv->softif_vlan_list_lock); | |
493 | ||
494 | return 0; | |
495 | } | |
496 | ||
497 | /** | |
498 | * batadv_softif_destroy_vlan - remove and destroy a softif_vlan object | |
499 | * @bat_priv: the bat priv with all the soft interface information | |
500 | * @vlan: the object to remove | |
501 | */ | |
502 | static void batadv_softif_destroy_vlan(struct batadv_priv *bat_priv, | |
503 | struct batadv_softif_vlan *vlan) | |
504 | { | |
505 | spin_lock_bh(&bat_priv->softif_vlan_list_lock); | |
506 | hlist_del_rcu(&vlan->list); | |
507 | spin_unlock_bh(&bat_priv->softif_vlan_list_lock); | |
508 | ||
90f4435d AQ |
509 | batadv_sysfs_del_vlan(bat_priv, vlan); |
510 | ||
5d2c05b2 AQ |
511 | /* explicitly remove the associated TT local entry because it is marked |
512 | * with the NOPURGE flag | |
513 | */ | |
514 | batadv_tt_local_remove(bat_priv, bat_priv->soft_iface->dev_addr, | |
515 | vlan->vid, "vlan interface destroyed", false); | |
516 | ||
517 | batadv_softif_vlan_free_ref(vlan); | |
518 | } | |
519 | ||
520 | /** | |
521 | * batadv_interface_add_vid - ndo_add_vid API implementation | |
522 | * @dev: the netdev of the mesh interface | |
523 | * @vid: identifier of the new vlan | |
524 | * | |
525 | * Set up all the internal structures for handling the new vlan on top of the | |
526 | * mesh interface | |
527 | * | |
528 | * Returns 0 on success or a negative error code in case of failure. | |
529 | */ | |
530 | static int batadv_interface_add_vid(struct net_device *dev, __be16 proto, | |
531 | unsigned short vid) | |
532 | { | |
533 | struct batadv_priv *bat_priv = netdev_priv(dev); | |
534 | ||
535 | /* only 802.1Q vlans are supported. | |
536 | * batman-adv does not know how to handle other types | |
537 | */ | |
538 | if (proto != htons(ETH_P_8021Q)) | |
539 | return -EINVAL; | |
540 | ||
541 | vid |= BATADV_VLAN_HAS_TAG; | |
542 | ||
543 | return batadv_softif_create_vlan(bat_priv, vid); | |
544 | } | |
545 | ||
546 | /** | |
547 | * batadv_interface_kill_vid - ndo_kill_vid API implementation | |
548 | * @dev: the netdev of the mesh interface | |
549 | * @vid: identifier of the deleted vlan | |
550 | * | |
551 | * Destroy all the internal structures used to handle the vlan identified by vid | |
552 | * on top of the mesh interface | |
553 | * | |
554 | * Returns 0 on success, -EINVAL if the specified prototype is not ETH_P_8021Q | |
555 | * or -ENOENT if the specified vlan id wasn't registered. | |
556 | */ | |
557 | static int batadv_interface_kill_vid(struct net_device *dev, __be16 proto, | |
558 | unsigned short vid) | |
559 | { | |
560 | struct batadv_priv *bat_priv = netdev_priv(dev); | |
561 | struct batadv_softif_vlan *vlan; | |
562 | ||
563 | /* only 802.1Q vlans are supported. batman-adv does not know how to | |
564 | * handle other types | |
565 | */ | |
566 | if (proto != htons(ETH_P_8021Q)) | |
567 | return -EINVAL; | |
568 | ||
569 | vlan = batadv_softif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG); | |
570 | if (!vlan) | |
571 | return -ENOENT; | |
572 | ||
573 | batadv_softif_destroy_vlan(bat_priv, vlan); | |
574 | ||
575 | /* finally free the vlan object */ | |
576 | batadv_softif_vlan_free_ref(vlan); | |
577 | ||
578 | return 0; | |
579 | } | |
580 | ||
36c1d153 SE |
581 | /* batman-adv network devices have devices nesting below it and are a special |
582 | * "super class" of normal network devices; split their locks off into a | |
583 | * separate class since they always nest. | |
584 | */ | |
585 | static struct lock_class_key batadv_netdev_xmit_lock_key; | |
586 | static struct lock_class_key batadv_netdev_addr_lock_key; | |
587 | ||
588 | /** | |
589 | * batadv_set_lockdep_class_one - Set lockdep class for a single tx queue | |
590 | * @dev: device which owns the tx queue | |
591 | * @txq: tx queue to modify | |
592 | * @_unused: always NULL | |
593 | */ | |
594 | static void batadv_set_lockdep_class_one(struct net_device *dev, | |
595 | struct netdev_queue *txq, | |
596 | void *_unused) | |
597 | { | |
598 | lockdep_set_class(&txq->_xmit_lock, &batadv_netdev_xmit_lock_key); | |
599 | } | |
600 | ||
601 | /** | |
602 | * batadv_set_lockdep_class - Set txq and addr_list lockdep class | |
603 | * @dev: network device to modify | |
604 | */ | |
605 | static void batadv_set_lockdep_class(struct net_device *dev) | |
606 | { | |
607 | lockdep_set_class(&dev->addr_list_lock, &batadv_netdev_addr_lock_key); | |
608 | netdev_for_each_tx_queue(dev, batadv_set_lockdep_class_one, NULL); | |
609 | } | |
610 | ||
5bc44dc8 SW |
611 | /** |
612 | * batadv_softif_destroy_finish - cleans up the remains of a softif | |
613 | * @work: work queue item | |
614 | * | |
615 | * Free the parts of the soft interface which can not be removed under | |
616 | * rtnl lock (to prevent deadlock situations). | |
617 | */ | |
618 | static void batadv_softif_destroy_finish(struct work_struct *work) | |
619 | { | |
5d2c05b2 | 620 | struct batadv_softif_vlan *vlan; |
5bc44dc8 SW |
621 | struct batadv_priv *bat_priv; |
622 | struct net_device *soft_iface; | |
623 | ||
624 | bat_priv = container_of(work, struct batadv_priv, | |
625 | cleanup_work); | |
626 | soft_iface = bat_priv->soft_iface; | |
627 | ||
5d2c05b2 AQ |
628 | /* destroy the "untagged" VLAN */ |
629 | vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); | |
630 | if (vlan) { | |
631 | batadv_softif_destroy_vlan(bat_priv, vlan); | |
632 | batadv_softif_vlan_free_ref(vlan); | |
633 | } | |
634 | ||
5bc44dc8 SW |
635 | batadv_sysfs_del_meshif(soft_iface); |
636 | ||
637 | rtnl_lock(); | |
638 | unregister_netdevice(soft_iface); | |
639 | rtnl_unlock(); | |
640 | } | |
641 | ||
37130293 SE |
642 | /** |
643 | * batadv_softif_init_late - late stage initialization of soft interface | |
644 | * @dev: registered network device to modify | |
645 | * | |
646 | * Returns error code on failures | |
647 | */ | |
648 | static int batadv_softif_init_late(struct net_device *dev) | |
c6c8fea2 | 649 | { |
56303d34 | 650 | struct batadv_priv *bat_priv; |
ee75ed88 | 651 | uint32_t random_seqno; |
c6c8fea2 | 652 | int ret; |
d69909d2 | 653 | size_t cnt_len = sizeof(uint64_t) * BATADV_CNT_NUM; |
c6c8fea2 | 654 | |
37130293 | 655 | batadv_set_lockdep_class(dev); |
c6c8fea2 | 656 | |
37130293 SE |
657 | bat_priv = netdev_priv(dev); |
658 | bat_priv->soft_iface = dev; | |
5bc44dc8 | 659 | INIT_WORK(&bat_priv->cleanup_work, batadv_softif_destroy_finish); |
1c9b0550 ML |
660 | |
661 | /* batadv_interface_stats() needs to be available as soon as | |
662 | * register_netdevice() has been called | |
663 | */ | |
664 | bat_priv->bat_counters = __alloc_percpu(cnt_len, __alignof__(uint64_t)); | |
665 | if (!bat_priv->bat_counters) | |
37130293 | 666 | return -ENOMEM; |
c6c8fea2 | 667 | |
c6c8fea2 SE |
668 | atomic_set(&bat_priv->aggregated_ogms, 1); |
669 | atomic_set(&bat_priv->bonding, 0); | |
fa706554 | 670 | #ifdef CONFIG_BATMAN_ADV_BLA |
23721387 | 671 | atomic_set(&bat_priv->bridge_loop_avoidance, 0); |
fa706554 | 672 | #endif |
33af49ad AQ |
673 | #ifdef CONFIG_BATMAN_ADV_DAT |
674 | atomic_set(&bat_priv->distributed_arp_table, 1); | |
675 | #endif | |
cd646ab1 | 676 | atomic_set(&bat_priv->gw_mode, BATADV_GW_MODE_OFF); |
c6c8fea2 | 677 | atomic_set(&bat_priv->gw_sel_class, 20); |
414254e3 ML |
678 | atomic_set(&bat_priv->gw.bandwidth_down, 100); |
679 | atomic_set(&bat_priv->gw.bandwidth_up, 20); | |
c6c8fea2 | 680 | atomic_set(&bat_priv->orig_interval, 1000); |
8681a1c4 | 681 | atomic_set(&bat_priv->hop_penalty, 30); |
0c430d0d | 682 | #ifdef CONFIG_BATMAN_ADV_DEBUG |
c6c8fea2 | 683 | atomic_set(&bat_priv->log_level, 0); |
0c430d0d | 684 | #endif |
c6c8fea2 | 685 | atomic_set(&bat_priv->fragmentation, 1); |
a19d3d85 | 686 | atomic_set(&bat_priv->packet_size_max, ETH_DATA_LEN); |
42d0b044 SE |
687 | atomic_set(&bat_priv->bcast_queue_left, BATADV_BCAST_QUEUE_LEN); |
688 | atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN); | |
c6c8fea2 | 689 | |
39c75a51 | 690 | atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE); |
c6c8fea2 | 691 | atomic_set(&bat_priv->bcast_seqno, 1); |
807736f6 SE |
692 | atomic_set(&bat_priv->tt.vn, 0); |
693 | atomic_set(&bat_priv->tt.local_changes, 0); | |
694 | atomic_set(&bat_priv->tt.ogm_append_cnt, 0); | |
695 | #ifdef CONFIG_BATMAN_ADV_BLA | |
696 | atomic_set(&bat_priv->bla.num_requests, 0); | |
697 | #endif | |
698 | bat_priv->tt.last_changeset = NULL; | |
699 | bat_priv->tt.last_changeset_len = 0; | |
c6c8fea2 | 700 | |
ee75ed88 MH |
701 | /* randomize initial seqno to avoid collision */ |
702 | get_random_bytes(&random_seqno, sizeof(random_seqno)); | |
703 | atomic_set(&bat_priv->frag_seqno, random_seqno); | |
704 | ||
c6c8fea2 SE |
705 | bat_priv->primary_if = NULL; |
706 | bat_priv->num_ifaces = 0; | |
c6c8fea2 | 707 | |
d353d8d4 MH |
708 | batadv_nc_init_bat_priv(bat_priv); |
709 | ||
37130293 | 710 | ret = batadv_algo_select(bat_priv, batadv_routing_algo); |
c6c8fea2 | 711 | if (ret < 0) |
37130293 | 712 | goto free_bat_counters; |
c6c8fea2 | 713 | |
37130293 | 714 | ret = batadv_debugfs_add_meshif(dev); |
c6c8fea2 | 715 | if (ret < 0) |
37130293 | 716 | goto free_bat_counters; |
c6c8fea2 | 717 | |
37130293 | 718 | ret = batadv_mesh_init(dev); |
c6c8fea2 SE |
719 | if (ret < 0) |
720 | goto unreg_debugfs; | |
721 | ||
37130293 | 722 | return 0; |
c6c8fea2 SE |
723 | |
724 | unreg_debugfs: | |
37130293 | 725 | batadv_debugfs_del_meshif(dev); |
1c9b0550 ML |
726 | free_bat_counters: |
727 | free_percpu(bat_priv->bat_counters); | |
f69ae770 | 728 | bat_priv->bat_counters = NULL; |
37130293 SE |
729 | |
730 | return ret; | |
731 | } | |
732 | ||
3dbd550b SE |
733 | /** |
734 | * batadv_softif_slave_add - Add a slave interface to a batadv_soft_interface | |
735 | * @dev: batadv_soft_interface used as master interface | |
736 | * @slave_dev: net_device which should become the slave interface | |
737 | * | |
738 | * Return 0 if successful or error otherwise. | |
739 | */ | |
740 | static int batadv_softif_slave_add(struct net_device *dev, | |
741 | struct net_device *slave_dev) | |
742 | { | |
743 | struct batadv_hard_iface *hard_iface; | |
744 | int ret = -EINVAL; | |
745 | ||
746 | hard_iface = batadv_hardif_get_by_netdev(slave_dev); | |
747 | if (!hard_iface || hard_iface->soft_iface != NULL) | |
748 | goto out; | |
749 | ||
750 | ret = batadv_hardif_enable_interface(hard_iface, dev->name); | |
751 | ||
752 | out: | |
753 | if (hard_iface) | |
754 | batadv_hardif_free_ref(hard_iface); | |
755 | return ret; | |
756 | } | |
757 | ||
758 | /** | |
759 | * batadv_softif_slave_del - Delete a slave iface from a batadv_soft_interface | |
760 | * @dev: batadv_soft_interface used as master interface | |
761 | * @slave_dev: net_device which should be removed from the master interface | |
762 | * | |
763 | * Return 0 if successful or error otherwise. | |
764 | */ | |
765 | static int batadv_softif_slave_del(struct net_device *dev, | |
766 | struct net_device *slave_dev) | |
767 | { | |
768 | struct batadv_hard_iface *hard_iface; | |
769 | int ret = -EINVAL; | |
770 | ||
771 | hard_iface = batadv_hardif_get_by_netdev(slave_dev); | |
772 | ||
773 | if (!hard_iface || hard_iface->soft_iface != dev) | |
774 | goto out; | |
775 | ||
776 | batadv_hardif_disable_interface(hard_iface, BATADV_IF_CLEANUP_KEEP); | |
777 | ret = 0; | |
778 | ||
779 | out: | |
780 | if (hard_iface) | |
781 | batadv_hardif_free_ref(hard_iface); | |
782 | return ret; | |
783 | } | |
784 | ||
37130293 SE |
785 | static const struct net_device_ops batadv_netdev_ops = { |
786 | .ndo_init = batadv_softif_init_late, | |
787 | .ndo_open = batadv_interface_open, | |
788 | .ndo_stop = batadv_interface_release, | |
789 | .ndo_get_stats = batadv_interface_stats, | |
5d2c05b2 AQ |
790 | .ndo_vlan_rx_add_vid = batadv_interface_add_vid, |
791 | .ndo_vlan_rx_kill_vid = batadv_interface_kill_vid, | |
37130293 SE |
792 | .ndo_set_mac_address = batadv_interface_set_mac_addr, |
793 | .ndo_change_mtu = batadv_interface_change_mtu, | |
a4deee1a | 794 | .ndo_set_rx_mode = batadv_interface_set_rx_mode, |
37130293 | 795 | .ndo_start_xmit = batadv_interface_tx, |
3dbd550b SE |
796 | .ndo_validate_addr = eth_validate_addr, |
797 | .ndo_add_slave = batadv_softif_slave_add, | |
798 | .ndo_del_slave = batadv_softif_slave_del, | |
37130293 SE |
799 | }; |
800 | ||
b3246020 SE |
801 | /** |
802 | * batadv_softif_free - Deconstructor of batadv_soft_interface | |
803 | * @dev: Device to cleanup and remove | |
804 | */ | |
805 | static void batadv_softif_free(struct net_device *dev) | |
806 | { | |
807 | batadv_debugfs_del_meshif(dev); | |
808 | batadv_mesh_free(dev); | |
0c501345 AQ |
809 | |
810 | /* some scheduled RCU callbacks need the bat_priv struct to accomplish | |
811 | * their tasks. Wait for them all to be finished before freeing the | |
812 | * netdev and its private data (bat_priv) | |
813 | */ | |
814 | rcu_barrier(); | |
815 | ||
b3246020 SE |
816 | free_netdev(dev); |
817 | } | |
818 | ||
37130293 SE |
819 | /** |
820 | * batadv_softif_init_early - early stage initialization of soft interface | |
821 | * @dev: registered network device to modify | |
822 | */ | |
823 | static void batadv_softif_init_early(struct net_device *dev) | |
824 | { | |
825 | struct batadv_priv *priv = netdev_priv(dev); | |
826 | ||
827 | ether_setup(dev); | |
828 | ||
829 | dev->netdev_ops = &batadv_netdev_ops; | |
b3246020 | 830 | dev->destructor = batadv_softif_free; |
5d2c05b2 | 831 | dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER; |
37130293 SE |
832 | dev->tx_queue_len = 0; |
833 | ||
834 | /* can't call min_mtu, because the needed variables | |
835 | * have not been initialized yet | |
836 | */ | |
837 | dev->mtu = ETH_DATA_LEN; | |
838 | /* reserve more space in the skbuff for our header */ | |
411d6ed9 | 839 | dev->hard_header_len = batadv_max_header_len(); |
37130293 SE |
840 | |
841 | /* generate random address */ | |
842 | eth_hw_addr_random(dev); | |
843 | ||
844 | SET_ETHTOOL_OPS(dev, &batadv_ethtool_ops); | |
845 | ||
846 | memset(priv, 0, sizeof(*priv)); | |
847 | } | |
848 | ||
849 | struct net_device *batadv_softif_create(const char *name) | |
850 | { | |
851 | struct net_device *soft_iface; | |
852 | int ret; | |
853 | ||
854 | soft_iface = alloc_netdev(sizeof(struct batadv_priv), name, | |
855 | batadv_softif_init_early); | |
856 | if (!soft_iface) | |
857 | return NULL; | |
858 | ||
a4ac28c0 SE |
859 | soft_iface->rtnl_link_ops = &batadv_link_ops; |
860 | ||
37130293 SE |
861 | ret = register_netdevice(soft_iface); |
862 | if (ret < 0) { | |
863 | pr_err("Unable to register the batman interface '%s': %i\n", | |
864 | name, ret); | |
865 | free_netdev(soft_iface); | |
866 | return NULL; | |
867 | } | |
868 | ||
869 | return soft_iface; | |
c6c8fea2 SE |
870 | } |
871 | ||
e07932ae ML |
872 | /** |
873 | * batadv_softif_destroy_sysfs - deletion of batadv_soft_interface via sysfs | |
874 | * @soft_iface: the to-be-removed batman-adv interface | |
875 | */ | |
876 | void batadv_softif_destroy_sysfs(struct net_device *soft_iface) | |
c6c8fea2 | 877 | { |
5bc44dc8 SW |
878 | struct batadv_priv *bat_priv = netdev_priv(soft_iface); |
879 | ||
5bc44dc8 | 880 | queue_work(batadv_event_workqueue, &bat_priv->cleanup_work); |
c6c8fea2 SE |
881 | } |
882 | ||
a4ac28c0 SE |
883 | /** |
884 | * batadv_softif_destroy_netlink - deletion of batadv_soft_interface via netlink | |
885 | * @soft_iface: the to-be-removed batman-adv interface | |
886 | * @head: list pointer | |
887 | */ | |
888 | static void batadv_softif_destroy_netlink(struct net_device *soft_iface, | |
889 | struct list_head *head) | |
890 | { | |
891 | struct batadv_hard_iface *hard_iface; | |
892 | ||
893 | list_for_each_entry(hard_iface, &batadv_hardif_list, list) { | |
894 | if (hard_iface->soft_iface == soft_iface) | |
895 | batadv_hardif_disable_interface(hard_iface, | |
896 | BATADV_IF_CLEANUP_KEEP); | |
897 | } | |
898 | ||
899 | batadv_sysfs_del_meshif(soft_iface); | |
900 | unregister_netdevice_queue(soft_iface, head); | |
901 | } | |
902 | ||
04b482a2 | 903 | int batadv_softif_is_valid(const struct net_device *net_dev) |
e44d8fe2 | 904 | { |
0294ca0d | 905 | if (net_dev->netdev_ops->ndo_start_xmit == batadv_interface_tx) |
e44d8fe2 | 906 | return 1; |
e44d8fe2 SE |
907 | |
908 | return 0; | |
909 | } | |
910 | ||
a4ac28c0 SE |
911 | struct rtnl_link_ops batadv_link_ops __read_mostly = { |
912 | .kind = "batadv", | |
913 | .priv_size = sizeof(struct batadv_priv), | |
914 | .setup = batadv_softif_init_early, | |
915 | .dellink = batadv_softif_destroy_netlink, | |
916 | }; | |
917 | ||
c6c8fea2 | 918 | /* ethtool */ |
0294ca0d | 919 | static int batadv_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) |
c6c8fea2 SE |
920 | { |
921 | cmd->supported = 0; | |
922 | cmd->advertising = 0; | |
70739497 | 923 | ethtool_cmd_speed_set(cmd, SPEED_10); |
c6c8fea2 SE |
924 | cmd->duplex = DUPLEX_FULL; |
925 | cmd->port = PORT_TP; | |
926 | cmd->phy_address = 0; | |
927 | cmd->transceiver = XCVR_INTERNAL; | |
928 | cmd->autoneg = AUTONEG_DISABLE; | |
929 | cmd->maxtxpkt = 0; | |
930 | cmd->maxrxpkt = 0; | |
931 | ||
932 | return 0; | |
933 | } | |
934 | ||
0294ca0d SE |
935 | static void batadv_get_drvinfo(struct net_device *dev, |
936 | struct ethtool_drvinfo *info) | |
c6c8fea2 | 937 | { |
7826d43f JP |
938 | strlcpy(info->driver, "B.A.T.M.A.N. advanced", sizeof(info->driver)); |
939 | strlcpy(info->version, BATADV_SOURCE_VERSION, sizeof(info->version)); | |
940 | strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); | |
941 | strlcpy(info->bus_info, "batman", sizeof(info->bus_info)); | |
c6c8fea2 SE |
942 | } |
943 | ||
0294ca0d | 944 | static u32 batadv_get_msglevel(struct net_device *dev) |
c6c8fea2 SE |
945 | { |
946 | return -EOPNOTSUPP; | |
947 | } | |
948 | ||
0294ca0d | 949 | static void batadv_set_msglevel(struct net_device *dev, u32 value) |
c6c8fea2 SE |
950 | { |
951 | } | |
952 | ||
0294ca0d | 953 | static u32 batadv_get_link(struct net_device *dev) |
c6c8fea2 SE |
954 | { |
955 | return 1; | |
956 | } | |
f8214865 MH |
957 | |
958 | /* Inspired by drivers/net/ethernet/dlink/sundance.c:1702 | |
959 | * Declare each description string in struct.name[] to get fixed sized buffer | |
960 | * and compile time checking for strings longer than ETH_GSTRING_LEN. | |
961 | */ | |
962 | static const struct { | |
963 | const char name[ETH_GSTRING_LEN]; | |
0294ca0d | 964 | } batadv_counters_strings[] = { |
1c9b0550 ML |
965 | { "tx" }, |
966 | { "tx_bytes" }, | |
967 | { "tx_dropped" }, | |
968 | { "rx" }, | |
969 | { "rx_bytes" }, | |
f8214865 MH |
970 | { "forward" }, |
971 | { "forward_bytes" }, | |
972 | { "mgmt_tx" }, | |
973 | { "mgmt_tx_bytes" }, | |
974 | { "mgmt_rx" }, | |
975 | { "mgmt_rx_bytes" }, | |
ee75ed88 MH |
976 | { "frag_tx" }, |
977 | { "frag_tx_bytes" }, | |
610bfc6b MH |
978 | { "frag_rx" }, |
979 | { "frag_rx_bytes" }, | |
980 | { "frag_fwd" }, | |
981 | { "frag_fwd_bytes" }, | |
f8214865 MH |
982 | { "tt_request_tx" }, |
983 | { "tt_request_rx" }, | |
984 | { "tt_response_tx" }, | |
985 | { "tt_response_rx" }, | |
986 | { "tt_roam_adv_tx" }, | |
987 | { "tt_roam_adv_rx" }, | |
4046b24a MH |
988 | #ifdef CONFIG_BATMAN_ADV_DAT |
989 | { "dat_get_tx" }, | |
990 | { "dat_get_rx" }, | |
991 | { "dat_put_tx" }, | |
992 | { "dat_put_rx" }, | |
993 | { "dat_cached_reply_tx" }, | |
994 | #endif | |
3c12de9a MH |
995 | #ifdef CONFIG_BATMAN_ADV_NC |
996 | { "nc_code" }, | |
997 | { "nc_code_bytes" }, | |
998 | { "nc_recode" }, | |
999 | { "nc_recode_bytes" }, | |
612d2b4f | 1000 | { "nc_buffer" }, |
2df5278b MH |
1001 | { "nc_decode" }, |
1002 | { "nc_decode_bytes" }, | |
1003 | { "nc_decode_failed" }, | |
1004 | { "nc_sniffed" }, | |
3c12de9a | 1005 | #endif |
f8214865 MH |
1006 | }; |
1007 | ||
1008 | static void batadv_get_strings(struct net_device *dev, uint32_t stringset, | |
1009 | uint8_t *data) | |
1010 | { | |
1011 | if (stringset == ETH_SS_STATS) | |
0294ca0d SE |
1012 | memcpy(data, batadv_counters_strings, |
1013 | sizeof(batadv_counters_strings)); | |
f8214865 MH |
1014 | } |
1015 | ||
1016 | static void batadv_get_ethtool_stats(struct net_device *dev, | |
1017 | struct ethtool_stats *stats, | |
1018 | uint64_t *data) | |
1019 | { | |
56303d34 | 1020 | struct batadv_priv *bat_priv = netdev_priv(dev); |
f8214865 MH |
1021 | int i; |
1022 | ||
d69909d2 | 1023 | for (i = 0; i < BATADV_CNT_NUM; i++) |
f8214865 MH |
1024 | data[i] = batadv_sum_counter(bat_priv, i); |
1025 | } | |
1026 | ||
1027 | static int batadv_get_sset_count(struct net_device *dev, int stringset) | |
1028 | { | |
1029 | if (stringset == ETH_SS_STATS) | |
d69909d2 | 1030 | return BATADV_CNT_NUM; |
f8214865 MH |
1031 | |
1032 | return -EOPNOTSUPP; | |
1033 | } |