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c6c8fea2 SE |
1 | /* |
2 | * Copyright (C) 2007-2010 B.A.T.M.A.N. contributors: | |
3 | * | |
4 | * Marek Lindner, Simon Wunderlich | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or | |
7 | * modify it under the terms of version 2 of the GNU General Public | |
8 | * License as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA | |
18 | * 02110-1301, USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #include "main.h" | |
23 | #include "soft-interface.h" | |
24 | #include "hard-interface.h" | |
25 | #include "routing.h" | |
26 | #include "send.h" | |
27 | #include "bat_debugfs.h" | |
28 | #include "translation-table.h" | |
29 | #include "types.h" | |
30 | #include "hash.h" | |
31 | #include "gateway_common.h" | |
32 | #include "gateway_client.h" | |
33 | #include "send.h" | |
34 | #include "bat_sysfs.h" | |
35 | #include <linux/slab.h> | |
36 | #include <linux/ethtool.h> | |
37 | #include <linux/etherdevice.h> | |
38 | #include <linux/if_vlan.h> | |
39 | #include "unicast.h" | |
40 | #include "routing.h" | |
41 | ||
42 | ||
43 | static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd); | |
44 | static void bat_get_drvinfo(struct net_device *dev, | |
45 | struct ethtool_drvinfo *info); | |
46 | static u32 bat_get_msglevel(struct net_device *dev); | |
47 | static void bat_set_msglevel(struct net_device *dev, u32 value); | |
48 | static u32 bat_get_link(struct net_device *dev); | |
49 | static u32 bat_get_rx_csum(struct net_device *dev); | |
50 | static int bat_set_rx_csum(struct net_device *dev, u32 data); | |
51 | ||
52 | static const struct ethtool_ops bat_ethtool_ops = { | |
53 | .get_settings = bat_get_settings, | |
54 | .get_drvinfo = bat_get_drvinfo, | |
55 | .get_msglevel = bat_get_msglevel, | |
56 | .set_msglevel = bat_set_msglevel, | |
57 | .get_link = bat_get_link, | |
58 | .get_rx_csum = bat_get_rx_csum, | |
59 | .set_rx_csum = bat_set_rx_csum | |
60 | }; | |
61 | ||
62 | int my_skb_head_push(struct sk_buff *skb, unsigned int len) | |
63 | { | |
64 | int result; | |
65 | ||
66 | /** | |
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. | |
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 | ||
82 | static void softif_neigh_free_ref(struct kref *refcount) | |
83 | { | |
84 | struct softif_neigh *softif_neigh; | |
85 | ||
86 | softif_neigh = container_of(refcount, struct softif_neigh, refcount); | |
87 | kfree(softif_neigh); | |
88 | } | |
89 | ||
90 | static void softif_neigh_free_rcu(struct rcu_head *rcu) | |
91 | { | |
92 | struct softif_neigh *softif_neigh; | |
93 | ||
94 | softif_neigh = container_of(rcu, struct softif_neigh, rcu); | |
95 | kref_put(&softif_neigh->refcount, softif_neigh_free_ref); | |
96 | } | |
97 | ||
98 | void softif_neigh_purge(struct bat_priv *bat_priv) | |
99 | { | |
100 | struct softif_neigh *softif_neigh, *softif_neigh_tmp; | |
101 | struct hlist_node *node, *node_tmp; | |
102 | ||
103 | spin_lock_bh(&bat_priv->softif_neigh_lock); | |
104 | ||
105 | hlist_for_each_entry_safe(softif_neigh, node, node_tmp, | |
106 | &bat_priv->softif_neigh_list, list) { | |
107 | ||
108 | if ((!time_after(jiffies, softif_neigh->last_seen + | |
109 | msecs_to_jiffies(SOFTIF_NEIGH_TIMEOUT))) && | |
110 | (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE)) | |
111 | continue; | |
112 | ||
113 | hlist_del_rcu(&softif_neigh->list); | |
114 | ||
115 | if (bat_priv->softif_neigh == softif_neigh) { | |
116 | bat_dbg(DBG_ROUTES, bat_priv, | |
117 | "Current mesh exit point '%pM' vanished " | |
118 | "(vid: %d).\n", | |
119 | softif_neigh->addr, softif_neigh->vid); | |
120 | softif_neigh_tmp = bat_priv->softif_neigh; | |
121 | bat_priv->softif_neigh = NULL; | |
122 | kref_put(&softif_neigh_tmp->refcount, | |
123 | softif_neigh_free_ref); | |
124 | } | |
125 | ||
126 | call_rcu(&softif_neigh->rcu, softif_neigh_free_rcu); | |
127 | } | |
128 | ||
129 | spin_unlock_bh(&bat_priv->softif_neigh_lock); | |
130 | } | |
131 | ||
132 | static struct softif_neigh *softif_neigh_get(struct bat_priv *bat_priv, | |
133 | uint8_t *addr, short vid) | |
134 | { | |
135 | struct softif_neigh *softif_neigh; | |
136 | struct hlist_node *node; | |
137 | ||
138 | rcu_read_lock(); | |
139 | hlist_for_each_entry_rcu(softif_neigh, node, | |
140 | &bat_priv->softif_neigh_list, list) { | |
141 | if (memcmp(softif_neigh->addr, addr, ETH_ALEN) != 0) | |
142 | continue; | |
143 | ||
144 | if (softif_neigh->vid != vid) | |
145 | continue; | |
146 | ||
147 | softif_neigh->last_seen = jiffies; | |
148 | goto found; | |
149 | } | |
150 | ||
151 | softif_neigh = kzalloc(sizeof(struct softif_neigh), GFP_ATOMIC); | |
152 | if (!softif_neigh) | |
153 | goto out; | |
154 | ||
155 | memcpy(softif_neigh->addr, addr, ETH_ALEN); | |
156 | softif_neigh->vid = vid; | |
157 | softif_neigh->last_seen = jiffies; | |
158 | kref_init(&softif_neigh->refcount); | |
159 | ||
160 | INIT_HLIST_NODE(&softif_neigh->list); | |
161 | spin_lock_bh(&bat_priv->softif_neigh_lock); | |
162 | hlist_add_head_rcu(&softif_neigh->list, &bat_priv->softif_neigh_list); | |
163 | spin_unlock_bh(&bat_priv->softif_neigh_lock); | |
164 | ||
165 | found: | |
166 | kref_get(&softif_neigh->refcount); | |
167 | out: | |
168 | rcu_read_unlock(); | |
169 | return softif_neigh; | |
170 | } | |
171 | ||
172 | int softif_neigh_seq_print_text(struct seq_file *seq, void *offset) | |
173 | { | |
174 | struct net_device *net_dev = (struct net_device *)seq->private; | |
175 | struct bat_priv *bat_priv = netdev_priv(net_dev); | |
176 | struct softif_neigh *softif_neigh; | |
177 | struct hlist_node *node; | |
178 | size_t buf_size, pos; | |
179 | char *buff; | |
180 | ||
181 | if (!bat_priv->primary_if) { | |
182 | return seq_printf(seq, "BATMAN mesh %s disabled - " | |
183 | "please specify interfaces to enable it\n", | |
184 | net_dev->name); | |
185 | } | |
186 | ||
187 | seq_printf(seq, "Softif neighbor list (%s)\n", net_dev->name); | |
188 | ||
189 | buf_size = 1; | |
190 | /* Estimate length for: " xx:xx:xx:xx:xx:xx\n" */ | |
191 | rcu_read_lock(); | |
192 | hlist_for_each_entry_rcu(softif_neigh, node, | |
193 | &bat_priv->softif_neigh_list, list) | |
194 | buf_size += 30; | |
195 | rcu_read_unlock(); | |
196 | ||
197 | buff = kmalloc(buf_size, GFP_ATOMIC); | |
198 | if (!buff) | |
199 | return -ENOMEM; | |
200 | ||
201 | buff[0] = '\0'; | |
202 | pos = 0; | |
203 | ||
204 | rcu_read_lock(); | |
205 | hlist_for_each_entry_rcu(softif_neigh, node, | |
206 | &bat_priv->softif_neigh_list, list) { | |
207 | pos += snprintf(buff + pos, 31, "%s %pM (vid: %d)\n", | |
208 | bat_priv->softif_neigh == softif_neigh | |
209 | ? "=>" : " ", softif_neigh->addr, | |
210 | softif_neigh->vid); | |
211 | } | |
212 | rcu_read_unlock(); | |
213 | ||
214 | seq_printf(seq, "%s", buff); | |
215 | kfree(buff); | |
216 | return 0; | |
217 | } | |
218 | ||
219 | static void softif_batman_recv(struct sk_buff *skb, struct net_device *dev, | |
220 | short vid) | |
221 | { | |
222 | struct bat_priv *bat_priv = netdev_priv(dev); | |
223 | struct ethhdr *ethhdr = (struct ethhdr *)skb->data; | |
224 | struct batman_packet *batman_packet; | |
225 | struct softif_neigh *softif_neigh, *softif_neigh_tmp; | |
226 | ||
227 | if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) | |
228 | batman_packet = (struct batman_packet *) | |
229 | (skb->data + ETH_HLEN + VLAN_HLEN); | |
230 | else | |
231 | batman_packet = (struct batman_packet *)(skb->data + ETH_HLEN); | |
232 | ||
233 | if (batman_packet->version != COMPAT_VERSION) | |
234 | goto err; | |
235 | ||
236 | if (batman_packet->packet_type != BAT_PACKET) | |
237 | goto err; | |
238 | ||
239 | if (!(batman_packet->flags & PRIMARIES_FIRST_HOP)) | |
240 | goto err; | |
241 | ||
242 | if (is_my_mac(batman_packet->orig)) | |
243 | goto err; | |
244 | ||
245 | softif_neigh = softif_neigh_get(bat_priv, batman_packet->orig, vid); | |
246 | ||
247 | if (!softif_neigh) | |
248 | goto err; | |
249 | ||
250 | if (bat_priv->softif_neigh == softif_neigh) | |
251 | goto out; | |
252 | ||
253 | /* we got a neighbor but its mac is 'bigger' than ours */ | |
254 | if (memcmp(bat_priv->primary_if->net_dev->dev_addr, | |
255 | softif_neigh->addr, ETH_ALEN) < 0) | |
256 | goto out; | |
257 | ||
258 | /* switch to new 'smallest neighbor' */ | |
259 | if ((bat_priv->softif_neigh) && | |
260 | (memcmp(softif_neigh->addr, bat_priv->softif_neigh->addr, | |
261 | ETH_ALEN) < 0)) { | |
262 | bat_dbg(DBG_ROUTES, bat_priv, | |
263 | "Changing mesh exit point from %pM (vid: %d) " | |
264 | "to %pM (vid: %d).\n", | |
265 | bat_priv->softif_neigh->addr, | |
266 | bat_priv->softif_neigh->vid, | |
267 | softif_neigh->addr, softif_neigh->vid); | |
268 | softif_neigh_tmp = bat_priv->softif_neigh; | |
269 | bat_priv->softif_neigh = softif_neigh; | |
270 | kref_put(&softif_neigh_tmp->refcount, softif_neigh_free_ref); | |
271 | /* we need to hold the additional reference */ | |
272 | goto err; | |
273 | } | |
274 | ||
275 | /* close own batX device and use softif_neigh as exit node */ | |
276 | if ((!bat_priv->softif_neigh) && | |
277 | (memcmp(softif_neigh->addr, | |
278 | bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN) < 0)) { | |
279 | bat_dbg(DBG_ROUTES, bat_priv, | |
280 | "Setting mesh exit point to %pM (vid: %d).\n", | |
281 | softif_neigh->addr, softif_neigh->vid); | |
282 | bat_priv->softif_neigh = softif_neigh; | |
283 | /* we need to hold the additional reference */ | |
284 | goto err; | |
285 | } | |
286 | ||
287 | out: | |
288 | kref_put(&softif_neigh->refcount, softif_neigh_free_ref); | |
289 | err: | |
290 | kfree_skb(skb); | |
291 | return; | |
292 | } | |
293 | ||
294 | static int interface_open(struct net_device *dev) | |
295 | { | |
296 | netif_start_queue(dev); | |
297 | return 0; | |
298 | } | |
299 | ||
300 | static int interface_release(struct net_device *dev) | |
301 | { | |
302 | netif_stop_queue(dev); | |
303 | return 0; | |
304 | } | |
305 | ||
306 | static struct net_device_stats *interface_stats(struct net_device *dev) | |
307 | { | |
308 | struct bat_priv *bat_priv = netdev_priv(dev); | |
309 | return &bat_priv->stats; | |
310 | } | |
311 | ||
312 | static int interface_set_mac_addr(struct net_device *dev, void *p) | |
313 | { | |
314 | struct bat_priv *bat_priv = netdev_priv(dev); | |
315 | struct sockaddr *addr = p; | |
316 | ||
317 | if (!is_valid_ether_addr(addr->sa_data)) | |
318 | return -EADDRNOTAVAIL; | |
319 | ||
320 | /* only modify hna-table if it has been initialised before */ | |
321 | if (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE) { | |
322 | hna_local_remove(bat_priv, dev->dev_addr, | |
323 | "mac address changed"); | |
324 | hna_local_add(dev, addr->sa_data); | |
325 | } | |
326 | ||
327 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); | |
328 | return 0; | |
329 | } | |
330 | ||
331 | static int interface_change_mtu(struct net_device *dev, int new_mtu) | |
332 | { | |
333 | /* check ranges */ | |
334 | if ((new_mtu < 68) || (new_mtu > hardif_min_mtu(dev))) | |
335 | return -EINVAL; | |
336 | ||
337 | dev->mtu = new_mtu; | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
342 | int interface_tx(struct sk_buff *skb, struct net_device *soft_iface) | |
343 | { | |
344 | struct ethhdr *ethhdr = (struct ethhdr *)skb->data; | |
345 | struct bat_priv *bat_priv = netdev_priv(soft_iface); | |
346 | struct bcast_packet *bcast_packet; | |
347 | struct vlan_ethhdr *vhdr; | |
348 | int data_len = skb->len, ret; | |
349 | short vid = -1; | |
350 | bool do_bcast = false; | |
351 | ||
352 | if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE) | |
353 | goto dropped; | |
354 | ||
355 | soft_iface->trans_start = jiffies; | |
356 | ||
357 | switch (ntohs(ethhdr->h_proto)) { | |
358 | case ETH_P_8021Q: | |
359 | vhdr = (struct vlan_ethhdr *)skb->data; | |
360 | vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK; | |
361 | ||
362 | if (ntohs(vhdr->h_vlan_encapsulated_proto) != ETH_P_BATMAN) | |
363 | break; | |
364 | ||
365 | /* fall through */ | |
366 | case ETH_P_BATMAN: | |
367 | softif_batman_recv(skb, soft_iface, vid); | |
368 | goto end; | |
369 | } | |
370 | ||
371 | /** | |
372 | * if we have a another chosen mesh exit node in range | |
373 | * it will transport the packets to the mesh | |
374 | */ | |
375 | if ((bat_priv->softif_neigh) && (bat_priv->softif_neigh->vid == vid)) | |
376 | goto dropped; | |
377 | ||
378 | /* TODO: check this for locks */ | |
379 | hna_local_add(soft_iface, ethhdr->h_source); | |
380 | ||
381 | if (is_multicast_ether_addr(ethhdr->h_dest)) { | |
382 | ret = gw_is_target(bat_priv, skb); | |
383 | ||
384 | if (ret < 0) | |
385 | goto dropped; | |
386 | ||
387 | if (ret == 0) | |
388 | do_bcast = true; | |
389 | } | |
390 | ||
391 | /* ethernet packet should be broadcasted */ | |
392 | if (do_bcast) { | |
393 | if (!bat_priv->primary_if) | |
394 | goto dropped; | |
395 | ||
396 | if (my_skb_head_push(skb, sizeof(struct bcast_packet)) < 0) | |
397 | goto dropped; | |
398 | ||
399 | bcast_packet = (struct bcast_packet *)skb->data; | |
400 | bcast_packet->version = COMPAT_VERSION; | |
401 | bcast_packet->ttl = TTL; | |
402 | ||
403 | /* batman packet type: broadcast */ | |
404 | bcast_packet->packet_type = BAT_BCAST; | |
405 | ||
406 | /* hw address of first interface is the orig mac because only | |
407 | * this mac is known throughout the mesh */ | |
408 | memcpy(bcast_packet->orig, | |
409 | bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN); | |
410 | ||
411 | /* set broadcast sequence number */ | |
412 | bcast_packet->seqno = | |
413 | htonl(atomic_inc_return(&bat_priv->bcast_seqno)); | |
414 | ||
415 | add_bcast_packet_to_list(bat_priv, skb); | |
416 | ||
417 | /* a copy is stored in the bcast list, therefore removing | |
418 | * the original skb. */ | |
419 | kfree_skb(skb); | |
420 | ||
421 | /* unicast packet */ | |
422 | } else { | |
423 | ret = unicast_send_skb(skb, bat_priv); | |
424 | if (ret != 0) | |
425 | goto dropped_freed; | |
426 | } | |
427 | ||
428 | bat_priv->stats.tx_packets++; | |
429 | bat_priv->stats.tx_bytes += data_len; | |
430 | goto end; | |
431 | ||
432 | dropped: | |
433 | kfree_skb(skb); | |
434 | dropped_freed: | |
435 | bat_priv->stats.tx_dropped++; | |
436 | end: | |
437 | return NETDEV_TX_OK; | |
438 | } | |
439 | ||
440 | void interface_rx(struct net_device *soft_iface, | |
441 | struct sk_buff *skb, struct batman_if *recv_if, | |
442 | int hdr_size) | |
443 | { | |
444 | struct bat_priv *bat_priv = netdev_priv(soft_iface); | |
445 | struct unicast_packet *unicast_packet; | |
446 | struct ethhdr *ethhdr; | |
447 | struct vlan_ethhdr *vhdr; | |
448 | short vid = -1; | |
449 | int ret; | |
450 | ||
451 | /* check if enough space is available for pulling, and pull */ | |
452 | if (!pskb_may_pull(skb, hdr_size)) | |
453 | goto dropped; | |
454 | ||
455 | skb_pull_rcsum(skb, hdr_size); | |
456 | skb_reset_mac_header(skb); | |
457 | ||
458 | ethhdr = (struct ethhdr *)skb_mac_header(skb); | |
459 | ||
460 | switch (ntohs(ethhdr->h_proto)) { | |
461 | case ETH_P_8021Q: | |
462 | vhdr = (struct vlan_ethhdr *)skb->data; | |
463 | vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK; | |
464 | ||
465 | if (ntohs(vhdr->h_vlan_encapsulated_proto) != ETH_P_BATMAN) | |
466 | break; | |
467 | ||
468 | /* fall through */ | |
469 | case ETH_P_BATMAN: | |
470 | goto dropped; | |
471 | } | |
472 | ||
473 | /** | |
474 | * if we have a another chosen mesh exit node in range | |
475 | * it will transport the packets to the non-mesh network | |
476 | */ | |
477 | if ((bat_priv->softif_neigh) && (bat_priv->softif_neigh->vid == vid)) { | |
478 | skb_push(skb, hdr_size); | |
479 | unicast_packet = (struct unicast_packet *)skb->data; | |
480 | ||
481 | if ((unicast_packet->packet_type != BAT_UNICAST) && | |
482 | (unicast_packet->packet_type != BAT_UNICAST_FRAG)) | |
483 | goto dropped; | |
484 | ||
485 | skb_reset_mac_header(skb); | |
486 | ||
487 | memcpy(unicast_packet->dest, | |
488 | bat_priv->softif_neigh->addr, ETH_ALEN); | |
489 | ret = route_unicast_packet(skb, recv_if, hdr_size); | |
490 | if (ret == NET_RX_DROP) | |
491 | goto dropped; | |
492 | ||
493 | goto out; | |
494 | } | |
495 | ||
496 | /* skb->dev & skb->pkt_type are set here */ | |
497 | if (unlikely(!pskb_may_pull(skb, ETH_HLEN))) | |
498 | goto dropped; | |
499 | skb->protocol = eth_type_trans(skb, soft_iface); | |
500 | ||
501 | /* should not be neccesary anymore as we use skb_pull_rcsum() | |
502 | * TODO: please verify this and remove this TODO | |
503 | * -- Dec 21st 2009, Simon Wunderlich */ | |
504 | ||
505 | /* skb->ip_summed = CHECKSUM_UNNECESSARY;*/ | |
506 | ||
507 | bat_priv->stats.rx_packets++; | |
508 | bat_priv->stats.rx_bytes += skb->len + sizeof(struct ethhdr); | |
509 | ||
510 | soft_iface->last_rx = jiffies; | |
511 | ||
512 | netif_rx(skb); | |
513 | return; | |
514 | ||
515 | dropped: | |
516 | kfree_skb(skb); | |
517 | out: | |
518 | return; | |
519 | } | |
520 | ||
521 | #ifdef HAVE_NET_DEVICE_OPS | |
522 | static const struct net_device_ops bat_netdev_ops = { | |
523 | .ndo_open = interface_open, | |
524 | .ndo_stop = interface_release, | |
525 | .ndo_get_stats = interface_stats, | |
526 | .ndo_set_mac_address = interface_set_mac_addr, | |
527 | .ndo_change_mtu = interface_change_mtu, | |
528 | .ndo_start_xmit = interface_tx, | |
529 | .ndo_validate_addr = eth_validate_addr | |
530 | }; | |
531 | #endif | |
532 | ||
533 | static void interface_setup(struct net_device *dev) | |
534 | { | |
535 | struct bat_priv *priv = netdev_priv(dev); | |
536 | char dev_addr[ETH_ALEN]; | |
537 | ||
538 | ether_setup(dev); | |
539 | ||
540 | #ifdef HAVE_NET_DEVICE_OPS | |
541 | dev->netdev_ops = &bat_netdev_ops; | |
542 | #else | |
543 | dev->open = interface_open; | |
544 | dev->stop = interface_release; | |
545 | dev->get_stats = interface_stats; | |
546 | dev->set_mac_address = interface_set_mac_addr; | |
547 | dev->change_mtu = interface_change_mtu; | |
548 | dev->hard_start_xmit = interface_tx; | |
549 | #endif | |
550 | dev->destructor = free_netdev; | |
551 | ||
552 | /** | |
553 | * can't call min_mtu, because the needed variables | |
554 | * have not been initialized yet | |
555 | */ | |
556 | dev->mtu = ETH_DATA_LEN; | |
557 | dev->hard_header_len = BAT_HEADER_LEN; /* reserve more space in the | |
558 | * skbuff for our header */ | |
559 | ||
560 | /* generate random address */ | |
561 | random_ether_addr(dev_addr); | |
562 | memcpy(dev->dev_addr, dev_addr, ETH_ALEN); | |
563 | ||
564 | SET_ETHTOOL_OPS(dev, &bat_ethtool_ops); | |
565 | ||
566 | memset(priv, 0, sizeof(struct bat_priv)); | |
567 | } | |
568 | ||
569 | struct net_device *softif_create(char *name) | |
570 | { | |
571 | struct net_device *soft_iface; | |
572 | struct bat_priv *bat_priv; | |
573 | int ret; | |
574 | ||
575 | soft_iface = alloc_netdev(sizeof(struct bat_priv) , name, | |
576 | interface_setup); | |
577 | ||
578 | if (!soft_iface) { | |
579 | pr_err("Unable to allocate the batman interface: %s\n", name); | |
580 | goto out; | |
581 | } | |
582 | ||
583 | ret = register_netdev(soft_iface); | |
584 | if (ret < 0) { | |
585 | pr_err("Unable to register the batman interface '%s': %i\n", | |
586 | name, ret); | |
587 | goto free_soft_iface; | |
588 | } | |
589 | ||
590 | bat_priv = netdev_priv(soft_iface); | |
591 | ||
592 | atomic_set(&bat_priv->aggregated_ogms, 1); | |
593 | atomic_set(&bat_priv->bonding, 0); | |
594 | atomic_set(&bat_priv->vis_mode, VIS_TYPE_CLIENT_UPDATE); | |
595 | atomic_set(&bat_priv->gw_mode, GW_MODE_OFF); | |
596 | atomic_set(&bat_priv->gw_sel_class, 20); | |
597 | atomic_set(&bat_priv->gw_bandwidth, 41); | |
598 | atomic_set(&bat_priv->orig_interval, 1000); | |
599 | atomic_set(&bat_priv->hop_penalty, 10); | |
600 | atomic_set(&bat_priv->log_level, 0); | |
601 | atomic_set(&bat_priv->fragmentation, 1); | |
602 | atomic_set(&bat_priv->bcast_queue_left, BCAST_QUEUE_LEN); | |
603 | atomic_set(&bat_priv->batman_queue_left, BATMAN_QUEUE_LEN); | |
604 | ||
605 | atomic_set(&bat_priv->mesh_state, MESH_INACTIVE); | |
606 | atomic_set(&bat_priv->bcast_seqno, 1); | |
607 | atomic_set(&bat_priv->hna_local_changed, 0); | |
608 | ||
609 | bat_priv->primary_if = NULL; | |
610 | bat_priv->num_ifaces = 0; | |
611 | bat_priv->softif_neigh = NULL; | |
612 | ||
613 | ret = sysfs_add_meshif(soft_iface); | |
614 | if (ret < 0) | |
615 | goto unreg_soft_iface; | |
616 | ||
617 | ret = debugfs_add_meshif(soft_iface); | |
618 | if (ret < 0) | |
619 | goto unreg_sysfs; | |
620 | ||
621 | ret = mesh_init(soft_iface); | |
622 | if (ret < 0) | |
623 | goto unreg_debugfs; | |
624 | ||
625 | return soft_iface; | |
626 | ||
627 | unreg_debugfs: | |
628 | debugfs_del_meshif(soft_iface); | |
629 | unreg_sysfs: | |
630 | sysfs_del_meshif(soft_iface); | |
631 | unreg_soft_iface: | |
632 | unregister_netdev(soft_iface); | |
633 | return NULL; | |
634 | ||
635 | free_soft_iface: | |
636 | free_netdev(soft_iface); | |
637 | out: | |
638 | return NULL; | |
639 | } | |
640 | ||
641 | void softif_destroy(struct net_device *soft_iface) | |
642 | { | |
643 | debugfs_del_meshif(soft_iface); | |
644 | sysfs_del_meshif(soft_iface); | |
645 | mesh_free(soft_iface); | |
646 | unregister_netdevice(soft_iface); | |
647 | } | |
648 | ||
649 | /* ethtool */ | |
650 | static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
651 | { | |
652 | cmd->supported = 0; | |
653 | cmd->advertising = 0; | |
654 | cmd->speed = SPEED_10; | |
655 | cmd->duplex = DUPLEX_FULL; | |
656 | cmd->port = PORT_TP; | |
657 | cmd->phy_address = 0; | |
658 | cmd->transceiver = XCVR_INTERNAL; | |
659 | cmd->autoneg = AUTONEG_DISABLE; | |
660 | cmd->maxtxpkt = 0; | |
661 | cmd->maxrxpkt = 0; | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
666 | static void bat_get_drvinfo(struct net_device *dev, | |
667 | struct ethtool_drvinfo *info) | |
668 | { | |
669 | strcpy(info->driver, "B.A.T.M.A.N. advanced"); | |
670 | strcpy(info->version, SOURCE_VERSION); | |
671 | strcpy(info->fw_version, "N/A"); | |
672 | strcpy(info->bus_info, "batman"); | |
673 | } | |
674 | ||
675 | static u32 bat_get_msglevel(struct net_device *dev) | |
676 | { | |
677 | return -EOPNOTSUPP; | |
678 | } | |
679 | ||
680 | static void bat_set_msglevel(struct net_device *dev, u32 value) | |
681 | { | |
682 | } | |
683 | ||
684 | static u32 bat_get_link(struct net_device *dev) | |
685 | { | |
686 | return 1; | |
687 | } | |
688 | ||
689 | static u32 bat_get_rx_csum(struct net_device *dev) | |
690 | { | |
691 | return 0; | |
692 | } | |
693 | ||
694 | static int bat_set_rx_csum(struct net_device *dev, u32 data) | |
695 | { | |
696 | return -EOPNOTSUPP; | |
697 | } |