Commit | Line | Data |
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c6c8fea2 | 1 | /* |
64afe353 | 2 | * Copyright (C) 2007-2011 B.A.T.M.A.N. contributors: |
c6c8fea2 SE |
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" | |
c6c8fea2 SE |
29 | #include "hash.h" |
30 | #include "gateway_common.h" | |
31 | #include "gateway_client.h" | |
c6c8fea2 SE |
32 | #include "bat_sysfs.h" |
33 | #include <linux/slab.h> | |
34 | #include <linux/ethtool.h> | |
35 | #include <linux/etherdevice.h> | |
36 | #include <linux/if_vlan.h> | |
37 | #include "unicast.h" | |
c6c8fea2 SE |
38 | |
39 | ||
40 | static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd); | |
41 | static void bat_get_drvinfo(struct net_device *dev, | |
42 | struct ethtool_drvinfo *info); | |
43 | static u32 bat_get_msglevel(struct net_device *dev); | |
44 | static void bat_set_msglevel(struct net_device *dev, u32 value); | |
45 | static u32 bat_get_link(struct net_device *dev); | |
46 | static u32 bat_get_rx_csum(struct net_device *dev); | |
47 | static int bat_set_rx_csum(struct net_device *dev, u32 data); | |
48 | ||
49 | static const struct ethtool_ops bat_ethtool_ops = { | |
50 | .get_settings = bat_get_settings, | |
51 | .get_drvinfo = bat_get_drvinfo, | |
52 | .get_msglevel = bat_get_msglevel, | |
53 | .set_msglevel = bat_set_msglevel, | |
54 | .get_link = bat_get_link, | |
55 | .get_rx_csum = bat_get_rx_csum, | |
56 | .set_rx_csum = bat_set_rx_csum | |
57 | }; | |
58 | ||
59 | int my_skb_head_push(struct sk_buff *skb, unsigned int len) | |
60 | { | |
61 | int result; | |
62 | ||
63 | /** | |
64 | * TODO: We must check if we can release all references to non-payload | |
65 | * data using skb_header_release in our skbs to allow skb_cow_header to | |
66 | * work optimally. This means that those skbs are not allowed to read | |
67 | * or write any data which is before the current position of skb->data | |
68 | * after that call and thus allow other skbs with the same data buffer | |
69 | * to write freely in that area. | |
70 | */ | |
71 | result = skb_cow_head(skb, len); | |
72 | if (result < 0) | |
73 | return result; | |
74 | ||
75 | skb_push(skb, len); | |
76 | return 0; | |
77 | } | |
78 | ||
7d2b5548 | 79 | static void softif_neigh_free_rcu(struct rcu_head *rcu) |
c6c8fea2 SE |
80 | { |
81 | struct softif_neigh *softif_neigh; | |
82 | ||
7d2b5548 | 83 | softif_neigh = container_of(rcu, struct softif_neigh, rcu); |
c6c8fea2 SE |
84 | kfree(softif_neigh); |
85 | } | |
86 | ||
7d2b5548 | 87 | static void softif_neigh_free_ref(struct softif_neigh *softif_neigh) |
c6c8fea2 | 88 | { |
7d2b5548 ML |
89 | if (atomic_dec_and_test(&softif_neigh->refcount)) |
90 | call_rcu(&softif_neigh->rcu, softif_neigh_free_rcu); | |
c6c8fea2 SE |
91 | } |
92 | ||
93 | void softif_neigh_purge(struct bat_priv *bat_priv) | |
94 | { | |
95 | struct softif_neigh *softif_neigh, *softif_neigh_tmp; | |
96 | struct hlist_node *node, *node_tmp; | |
97 | ||
98 | spin_lock_bh(&bat_priv->softif_neigh_lock); | |
99 | ||
100 | hlist_for_each_entry_safe(softif_neigh, node, node_tmp, | |
101 | &bat_priv->softif_neigh_list, list) { | |
102 | ||
103 | if ((!time_after(jiffies, softif_neigh->last_seen + | |
104 | msecs_to_jiffies(SOFTIF_NEIGH_TIMEOUT))) && | |
105 | (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE)) | |
106 | continue; | |
107 | ||
108 | hlist_del_rcu(&softif_neigh->list); | |
109 | ||
110 | if (bat_priv->softif_neigh == softif_neigh) { | |
111 | bat_dbg(DBG_ROUTES, bat_priv, | |
112 | "Current mesh exit point '%pM' vanished " | |
113 | "(vid: %d).\n", | |
114 | softif_neigh->addr, softif_neigh->vid); | |
115 | softif_neigh_tmp = bat_priv->softif_neigh; | |
116 | bat_priv->softif_neigh = NULL; | |
7d2b5548 | 117 | softif_neigh_free_ref(softif_neigh_tmp); |
c6c8fea2 SE |
118 | } |
119 | ||
7d2b5548 | 120 | softif_neigh_free_ref(softif_neigh); |
c6c8fea2 SE |
121 | } |
122 | ||
123 | spin_unlock_bh(&bat_priv->softif_neigh_lock); | |
124 | } | |
125 | ||
126 | static struct softif_neigh *softif_neigh_get(struct bat_priv *bat_priv, | |
127 | uint8_t *addr, short vid) | |
128 | { | |
129 | struct softif_neigh *softif_neigh; | |
130 | struct hlist_node *node; | |
131 | ||
132 | rcu_read_lock(); | |
133 | hlist_for_each_entry_rcu(softif_neigh, node, | |
134 | &bat_priv->softif_neigh_list, list) { | |
39901e71 | 135 | if (!compare_eth(softif_neigh->addr, addr)) |
c6c8fea2 SE |
136 | continue; |
137 | ||
138 | if (softif_neigh->vid != vid) | |
139 | continue; | |
140 | ||
7d2b5548 ML |
141 | if (!atomic_inc_not_zero(&softif_neigh->refcount)) |
142 | continue; | |
143 | ||
c6c8fea2 | 144 | softif_neigh->last_seen = jiffies; |
7d2b5548 | 145 | goto out; |
c6c8fea2 SE |
146 | } |
147 | ||
148 | softif_neigh = kzalloc(sizeof(struct softif_neigh), GFP_ATOMIC); | |
149 | if (!softif_neigh) | |
150 | goto out; | |
151 | ||
152 | memcpy(softif_neigh->addr, addr, ETH_ALEN); | |
153 | softif_neigh->vid = vid; | |
154 | softif_neigh->last_seen = jiffies; | |
7d2b5548 ML |
155 | /* initialize with 2 - caller decrements counter by one */ |
156 | atomic_set(&softif_neigh->refcount, 2); | |
c6c8fea2 SE |
157 | |
158 | INIT_HLIST_NODE(&softif_neigh->list); | |
159 | spin_lock_bh(&bat_priv->softif_neigh_lock); | |
160 | hlist_add_head_rcu(&softif_neigh->list, &bat_priv->softif_neigh_list); | |
161 | spin_unlock_bh(&bat_priv->softif_neigh_lock); | |
162 | ||
c6c8fea2 SE |
163 | out: |
164 | rcu_read_unlock(); | |
165 | return softif_neigh; | |
166 | } | |
167 | ||
168 | int softif_neigh_seq_print_text(struct seq_file *seq, void *offset) | |
169 | { | |
170 | struct net_device *net_dev = (struct net_device *)seq->private; | |
171 | struct bat_priv *bat_priv = netdev_priv(net_dev); | |
172 | struct softif_neigh *softif_neigh; | |
173 | struct hlist_node *node; | |
c6c8fea2 SE |
174 | |
175 | if (!bat_priv->primary_if) { | |
176 | return seq_printf(seq, "BATMAN mesh %s disabled - " | |
177 | "please specify interfaces to enable it\n", | |
178 | net_dev->name); | |
179 | } | |
180 | ||
181 | seq_printf(seq, "Softif neighbor list (%s)\n", net_dev->name); | |
182 | ||
c6c8fea2 SE |
183 | rcu_read_lock(); |
184 | hlist_for_each_entry_rcu(softif_neigh, node, | |
185 | &bat_priv->softif_neigh_list, list) | |
9e0b33c2 | 186 | seq_printf(seq, "%s %pM (vid: %d)\n", |
c6c8fea2 SE |
187 | bat_priv->softif_neigh == softif_neigh |
188 | ? "=>" : " ", softif_neigh->addr, | |
189 | softif_neigh->vid); | |
c6c8fea2 SE |
190 | rcu_read_unlock(); |
191 | ||
c6c8fea2 SE |
192 | return 0; |
193 | } | |
194 | ||
195 | static void softif_batman_recv(struct sk_buff *skb, struct net_device *dev, | |
196 | short vid) | |
197 | { | |
198 | struct bat_priv *bat_priv = netdev_priv(dev); | |
199 | struct ethhdr *ethhdr = (struct ethhdr *)skb->data; | |
200 | struct batman_packet *batman_packet; | |
201 | struct softif_neigh *softif_neigh, *softif_neigh_tmp; | |
202 | ||
203 | if (ntohs(ethhdr->h_proto) == ETH_P_8021Q) | |
204 | batman_packet = (struct batman_packet *) | |
205 | (skb->data + ETH_HLEN + VLAN_HLEN); | |
206 | else | |
207 | batman_packet = (struct batman_packet *)(skb->data + ETH_HLEN); | |
208 | ||
209 | if (batman_packet->version != COMPAT_VERSION) | |
210 | goto err; | |
211 | ||
212 | if (batman_packet->packet_type != BAT_PACKET) | |
213 | goto err; | |
214 | ||
215 | if (!(batman_packet->flags & PRIMARIES_FIRST_HOP)) | |
216 | goto err; | |
217 | ||
218 | if (is_my_mac(batman_packet->orig)) | |
219 | goto err; | |
220 | ||
221 | softif_neigh = softif_neigh_get(bat_priv, batman_packet->orig, vid); | |
222 | ||
223 | if (!softif_neigh) | |
224 | goto err; | |
225 | ||
226 | if (bat_priv->softif_neigh == softif_neigh) | |
227 | goto out; | |
228 | ||
229 | /* we got a neighbor but its mac is 'bigger' than ours */ | |
230 | if (memcmp(bat_priv->primary_if->net_dev->dev_addr, | |
231 | softif_neigh->addr, ETH_ALEN) < 0) | |
232 | goto out; | |
233 | ||
234 | /* switch to new 'smallest neighbor' */ | |
235 | if ((bat_priv->softif_neigh) && | |
236 | (memcmp(softif_neigh->addr, bat_priv->softif_neigh->addr, | |
237 | ETH_ALEN) < 0)) { | |
238 | bat_dbg(DBG_ROUTES, bat_priv, | |
239 | "Changing mesh exit point from %pM (vid: %d) " | |
240 | "to %pM (vid: %d).\n", | |
241 | bat_priv->softif_neigh->addr, | |
242 | bat_priv->softif_neigh->vid, | |
243 | softif_neigh->addr, softif_neigh->vid); | |
244 | softif_neigh_tmp = bat_priv->softif_neigh; | |
245 | bat_priv->softif_neigh = softif_neigh; | |
7d2b5548 | 246 | softif_neigh_free_ref(softif_neigh_tmp); |
c6c8fea2 SE |
247 | /* we need to hold the additional reference */ |
248 | goto err; | |
249 | } | |
250 | ||
251 | /* close own batX device and use softif_neigh as exit node */ | |
252 | if ((!bat_priv->softif_neigh) && | |
253 | (memcmp(softif_neigh->addr, | |
254 | bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN) < 0)) { | |
255 | bat_dbg(DBG_ROUTES, bat_priv, | |
256 | "Setting mesh exit point to %pM (vid: %d).\n", | |
257 | softif_neigh->addr, softif_neigh->vid); | |
258 | bat_priv->softif_neigh = softif_neigh; | |
259 | /* we need to hold the additional reference */ | |
260 | goto err; | |
261 | } | |
262 | ||
263 | out: | |
7d2b5548 | 264 | softif_neigh_free_ref(softif_neigh); |
c6c8fea2 SE |
265 | err: |
266 | kfree_skb(skb); | |
267 | return; | |
268 | } | |
269 | ||
270 | static int interface_open(struct net_device *dev) | |
271 | { | |
272 | netif_start_queue(dev); | |
273 | return 0; | |
274 | } | |
275 | ||
276 | static int interface_release(struct net_device *dev) | |
277 | { | |
278 | netif_stop_queue(dev); | |
279 | return 0; | |
280 | } | |
281 | ||
282 | static struct net_device_stats *interface_stats(struct net_device *dev) | |
283 | { | |
284 | struct bat_priv *bat_priv = netdev_priv(dev); | |
285 | return &bat_priv->stats; | |
286 | } | |
287 | ||
288 | static int interface_set_mac_addr(struct net_device *dev, void *p) | |
289 | { | |
290 | struct bat_priv *bat_priv = netdev_priv(dev); | |
291 | struct sockaddr *addr = p; | |
292 | ||
293 | if (!is_valid_ether_addr(addr->sa_data)) | |
294 | return -EADDRNOTAVAIL; | |
295 | ||
296 | /* only modify hna-table if it has been initialised before */ | |
297 | if (atomic_read(&bat_priv->mesh_state) == MESH_ACTIVE) { | |
298 | hna_local_remove(bat_priv, dev->dev_addr, | |
299 | "mac address changed"); | |
300 | hna_local_add(dev, addr->sa_data); | |
301 | } | |
302 | ||
303 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); | |
304 | return 0; | |
305 | } | |
306 | ||
307 | static int interface_change_mtu(struct net_device *dev, int new_mtu) | |
308 | { | |
309 | /* check ranges */ | |
310 | if ((new_mtu < 68) || (new_mtu > hardif_min_mtu(dev))) | |
311 | return -EINVAL; | |
312 | ||
313 | dev->mtu = new_mtu; | |
314 | ||
315 | return 0; | |
316 | } | |
317 | ||
318 | int interface_tx(struct sk_buff *skb, struct net_device *soft_iface) | |
319 | { | |
320 | struct ethhdr *ethhdr = (struct ethhdr *)skb->data; | |
321 | struct bat_priv *bat_priv = netdev_priv(soft_iface); | |
322 | struct bcast_packet *bcast_packet; | |
323 | struct vlan_ethhdr *vhdr; | |
324 | int data_len = skb->len, ret; | |
325 | short vid = -1; | |
326 | bool do_bcast = false; | |
327 | ||
328 | if (atomic_read(&bat_priv->mesh_state) != MESH_ACTIVE) | |
329 | goto dropped; | |
330 | ||
331 | soft_iface->trans_start = jiffies; | |
332 | ||
333 | switch (ntohs(ethhdr->h_proto)) { | |
334 | case ETH_P_8021Q: | |
335 | vhdr = (struct vlan_ethhdr *)skb->data; | |
336 | vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK; | |
337 | ||
338 | if (ntohs(vhdr->h_vlan_encapsulated_proto) != ETH_P_BATMAN) | |
339 | break; | |
340 | ||
341 | /* fall through */ | |
342 | case ETH_P_BATMAN: | |
343 | softif_batman_recv(skb, soft_iface, vid); | |
344 | goto end; | |
345 | } | |
346 | ||
347 | /** | |
348 | * if we have a another chosen mesh exit node in range | |
349 | * it will transport the packets to the mesh | |
350 | */ | |
351 | if ((bat_priv->softif_neigh) && (bat_priv->softif_neigh->vid == vid)) | |
352 | goto dropped; | |
353 | ||
354 | /* TODO: check this for locks */ | |
355 | hna_local_add(soft_iface, ethhdr->h_source); | |
356 | ||
357 | if (is_multicast_ether_addr(ethhdr->h_dest)) { | |
358 | ret = gw_is_target(bat_priv, skb); | |
359 | ||
360 | if (ret < 0) | |
361 | goto dropped; | |
362 | ||
363 | if (ret == 0) | |
364 | do_bcast = true; | |
365 | } | |
366 | ||
367 | /* ethernet packet should be broadcasted */ | |
368 | if (do_bcast) { | |
369 | if (!bat_priv->primary_if) | |
370 | goto dropped; | |
371 | ||
372 | if (my_skb_head_push(skb, sizeof(struct bcast_packet)) < 0) | |
373 | goto dropped; | |
374 | ||
375 | bcast_packet = (struct bcast_packet *)skb->data; | |
376 | bcast_packet->version = COMPAT_VERSION; | |
377 | bcast_packet->ttl = TTL; | |
378 | ||
379 | /* batman packet type: broadcast */ | |
380 | bcast_packet->packet_type = BAT_BCAST; | |
381 | ||
382 | /* hw address of first interface is the orig mac because only | |
383 | * this mac is known throughout the mesh */ | |
384 | memcpy(bcast_packet->orig, | |
385 | bat_priv->primary_if->net_dev->dev_addr, ETH_ALEN); | |
386 | ||
387 | /* set broadcast sequence number */ | |
388 | bcast_packet->seqno = | |
389 | htonl(atomic_inc_return(&bat_priv->bcast_seqno)); | |
390 | ||
391 | add_bcast_packet_to_list(bat_priv, skb); | |
392 | ||
393 | /* a copy is stored in the bcast list, therefore removing | |
394 | * the original skb. */ | |
395 | kfree_skb(skb); | |
396 | ||
397 | /* unicast packet */ | |
398 | } else { | |
399 | ret = unicast_send_skb(skb, bat_priv); | |
400 | if (ret != 0) | |
401 | goto dropped_freed; | |
402 | } | |
403 | ||
404 | bat_priv->stats.tx_packets++; | |
405 | bat_priv->stats.tx_bytes += data_len; | |
406 | goto end; | |
407 | ||
408 | dropped: | |
409 | kfree_skb(skb); | |
410 | dropped_freed: | |
411 | bat_priv->stats.tx_dropped++; | |
412 | end: | |
413 | return NETDEV_TX_OK; | |
414 | } | |
415 | ||
416 | void interface_rx(struct net_device *soft_iface, | |
e6c10f43 | 417 | struct sk_buff *skb, struct hard_iface *recv_if, |
c6c8fea2 SE |
418 | int hdr_size) |
419 | { | |
420 | struct bat_priv *bat_priv = netdev_priv(soft_iface); | |
421 | struct unicast_packet *unicast_packet; | |
422 | struct ethhdr *ethhdr; | |
423 | struct vlan_ethhdr *vhdr; | |
424 | short vid = -1; | |
425 | int ret; | |
426 | ||
427 | /* check if enough space is available for pulling, and pull */ | |
428 | if (!pskb_may_pull(skb, hdr_size)) | |
429 | goto dropped; | |
430 | ||
431 | skb_pull_rcsum(skb, hdr_size); | |
432 | skb_reset_mac_header(skb); | |
433 | ||
434 | ethhdr = (struct ethhdr *)skb_mac_header(skb); | |
435 | ||
436 | switch (ntohs(ethhdr->h_proto)) { | |
437 | case ETH_P_8021Q: | |
438 | vhdr = (struct vlan_ethhdr *)skb->data; | |
439 | vid = ntohs(vhdr->h_vlan_TCI) & VLAN_VID_MASK; | |
440 | ||
441 | if (ntohs(vhdr->h_vlan_encapsulated_proto) != ETH_P_BATMAN) | |
442 | break; | |
443 | ||
444 | /* fall through */ | |
445 | case ETH_P_BATMAN: | |
446 | goto dropped; | |
447 | } | |
448 | ||
449 | /** | |
450 | * if we have a another chosen mesh exit node in range | |
451 | * it will transport the packets to the non-mesh network | |
452 | */ | |
453 | if ((bat_priv->softif_neigh) && (bat_priv->softif_neigh->vid == vid)) { | |
454 | skb_push(skb, hdr_size); | |
455 | unicast_packet = (struct unicast_packet *)skb->data; | |
456 | ||
457 | if ((unicast_packet->packet_type != BAT_UNICAST) && | |
458 | (unicast_packet->packet_type != BAT_UNICAST_FRAG)) | |
459 | goto dropped; | |
460 | ||
461 | skb_reset_mac_header(skb); | |
462 | ||
463 | memcpy(unicast_packet->dest, | |
464 | bat_priv->softif_neigh->addr, ETH_ALEN); | |
7cefb149 | 465 | ret = route_unicast_packet(skb, recv_if); |
c6c8fea2 SE |
466 | if (ret == NET_RX_DROP) |
467 | goto dropped; | |
468 | ||
469 | goto out; | |
470 | } | |
471 | ||
472 | /* skb->dev & skb->pkt_type are set here */ | |
473 | if (unlikely(!pskb_may_pull(skb, ETH_HLEN))) | |
474 | goto dropped; | |
475 | skb->protocol = eth_type_trans(skb, soft_iface); | |
476 | ||
25985edc | 477 | /* should not be necessary anymore as we use skb_pull_rcsum() |
c6c8fea2 SE |
478 | * TODO: please verify this and remove this TODO |
479 | * -- Dec 21st 2009, Simon Wunderlich */ | |
480 | ||
481 | /* skb->ip_summed = CHECKSUM_UNNECESSARY;*/ | |
482 | ||
483 | bat_priv->stats.rx_packets++; | |
484 | bat_priv->stats.rx_bytes += skb->len + sizeof(struct ethhdr); | |
485 | ||
486 | soft_iface->last_rx = jiffies; | |
487 | ||
488 | netif_rx(skb); | |
489 | return; | |
490 | ||
491 | dropped: | |
492 | kfree_skb(skb); | |
493 | out: | |
494 | return; | |
495 | } | |
496 | ||
497 | #ifdef HAVE_NET_DEVICE_OPS | |
498 | static const struct net_device_ops bat_netdev_ops = { | |
499 | .ndo_open = interface_open, | |
500 | .ndo_stop = interface_release, | |
501 | .ndo_get_stats = interface_stats, | |
502 | .ndo_set_mac_address = interface_set_mac_addr, | |
503 | .ndo_change_mtu = interface_change_mtu, | |
504 | .ndo_start_xmit = interface_tx, | |
505 | .ndo_validate_addr = eth_validate_addr | |
506 | }; | |
507 | #endif | |
508 | ||
509 | static void interface_setup(struct net_device *dev) | |
510 | { | |
511 | struct bat_priv *priv = netdev_priv(dev); | |
512 | char dev_addr[ETH_ALEN]; | |
513 | ||
514 | ether_setup(dev); | |
515 | ||
516 | #ifdef HAVE_NET_DEVICE_OPS | |
517 | dev->netdev_ops = &bat_netdev_ops; | |
518 | #else | |
519 | dev->open = interface_open; | |
520 | dev->stop = interface_release; | |
521 | dev->get_stats = interface_stats; | |
522 | dev->set_mac_address = interface_set_mac_addr; | |
523 | dev->change_mtu = interface_change_mtu; | |
524 | dev->hard_start_xmit = interface_tx; | |
525 | #endif | |
526 | dev->destructor = free_netdev; | |
527 | ||
528 | /** | |
529 | * can't call min_mtu, because the needed variables | |
530 | * have not been initialized yet | |
531 | */ | |
532 | dev->mtu = ETH_DATA_LEN; | |
533 | dev->hard_header_len = BAT_HEADER_LEN; /* reserve more space in the | |
534 | * skbuff for our header */ | |
535 | ||
536 | /* generate random address */ | |
537 | random_ether_addr(dev_addr); | |
538 | memcpy(dev->dev_addr, dev_addr, ETH_ALEN); | |
539 | ||
540 | SET_ETHTOOL_OPS(dev, &bat_ethtool_ops); | |
541 | ||
542 | memset(priv, 0, sizeof(struct bat_priv)); | |
543 | } | |
544 | ||
545 | struct net_device *softif_create(char *name) | |
546 | { | |
547 | struct net_device *soft_iface; | |
548 | struct bat_priv *bat_priv; | |
549 | int ret; | |
550 | ||
551 | soft_iface = alloc_netdev(sizeof(struct bat_priv) , name, | |
552 | interface_setup); | |
553 | ||
554 | if (!soft_iface) { | |
555 | pr_err("Unable to allocate the batman interface: %s\n", name); | |
556 | goto out; | |
557 | } | |
558 | ||
559 | ret = register_netdev(soft_iface); | |
560 | if (ret < 0) { | |
561 | pr_err("Unable to register the batman interface '%s': %i\n", | |
562 | name, ret); | |
563 | goto free_soft_iface; | |
564 | } | |
565 | ||
566 | bat_priv = netdev_priv(soft_iface); | |
567 | ||
568 | atomic_set(&bat_priv->aggregated_ogms, 1); | |
569 | atomic_set(&bat_priv->bonding, 0); | |
570 | atomic_set(&bat_priv->vis_mode, VIS_TYPE_CLIENT_UPDATE); | |
571 | atomic_set(&bat_priv->gw_mode, GW_MODE_OFF); | |
572 | atomic_set(&bat_priv->gw_sel_class, 20); | |
573 | atomic_set(&bat_priv->gw_bandwidth, 41); | |
574 | atomic_set(&bat_priv->orig_interval, 1000); | |
575 | atomic_set(&bat_priv->hop_penalty, 10); | |
576 | atomic_set(&bat_priv->log_level, 0); | |
577 | atomic_set(&bat_priv->fragmentation, 1); | |
578 | atomic_set(&bat_priv->bcast_queue_left, BCAST_QUEUE_LEN); | |
579 | atomic_set(&bat_priv->batman_queue_left, BATMAN_QUEUE_LEN); | |
580 | ||
581 | atomic_set(&bat_priv->mesh_state, MESH_INACTIVE); | |
582 | atomic_set(&bat_priv->bcast_seqno, 1); | |
583 | atomic_set(&bat_priv->hna_local_changed, 0); | |
584 | ||
585 | bat_priv->primary_if = NULL; | |
586 | bat_priv->num_ifaces = 0; | |
587 | bat_priv->softif_neigh = NULL; | |
588 | ||
589 | ret = sysfs_add_meshif(soft_iface); | |
590 | if (ret < 0) | |
591 | goto unreg_soft_iface; | |
592 | ||
593 | ret = debugfs_add_meshif(soft_iface); | |
594 | if (ret < 0) | |
595 | goto unreg_sysfs; | |
596 | ||
597 | ret = mesh_init(soft_iface); | |
598 | if (ret < 0) | |
599 | goto unreg_debugfs; | |
600 | ||
601 | return soft_iface; | |
602 | ||
603 | unreg_debugfs: | |
604 | debugfs_del_meshif(soft_iface); | |
605 | unreg_sysfs: | |
606 | sysfs_del_meshif(soft_iface); | |
607 | unreg_soft_iface: | |
608 | unregister_netdev(soft_iface); | |
609 | return NULL; | |
610 | ||
611 | free_soft_iface: | |
612 | free_netdev(soft_iface); | |
613 | out: | |
614 | return NULL; | |
615 | } | |
616 | ||
617 | void softif_destroy(struct net_device *soft_iface) | |
618 | { | |
619 | debugfs_del_meshif(soft_iface); | |
620 | sysfs_del_meshif(soft_iface); | |
621 | mesh_free(soft_iface); | |
622 | unregister_netdevice(soft_iface); | |
623 | } | |
624 | ||
e44d8fe2 SE |
625 | int softif_is_valid(struct net_device *net_dev) |
626 | { | |
627 | #ifdef HAVE_NET_DEVICE_OPS | |
628 | if (net_dev->netdev_ops->ndo_start_xmit == interface_tx) | |
629 | return 1; | |
630 | #else | |
631 | if (net_dev->hard_start_xmit == interface_tx) | |
632 | return 1; | |
633 | #endif | |
634 | ||
635 | return 0; | |
636 | } | |
637 | ||
c6c8fea2 SE |
638 | /* ethtool */ |
639 | static int bat_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) | |
640 | { | |
641 | cmd->supported = 0; | |
642 | cmd->advertising = 0; | |
643 | cmd->speed = SPEED_10; | |
644 | cmd->duplex = DUPLEX_FULL; | |
645 | cmd->port = PORT_TP; | |
646 | cmd->phy_address = 0; | |
647 | cmd->transceiver = XCVR_INTERNAL; | |
648 | cmd->autoneg = AUTONEG_DISABLE; | |
649 | cmd->maxtxpkt = 0; | |
650 | cmd->maxrxpkt = 0; | |
651 | ||
652 | return 0; | |
653 | } | |
654 | ||
655 | static void bat_get_drvinfo(struct net_device *dev, | |
656 | struct ethtool_drvinfo *info) | |
657 | { | |
658 | strcpy(info->driver, "B.A.T.M.A.N. advanced"); | |
659 | strcpy(info->version, SOURCE_VERSION); | |
660 | strcpy(info->fw_version, "N/A"); | |
661 | strcpy(info->bus_info, "batman"); | |
662 | } | |
663 | ||
664 | static u32 bat_get_msglevel(struct net_device *dev) | |
665 | { | |
666 | return -EOPNOTSUPP; | |
667 | } | |
668 | ||
669 | static void bat_set_msglevel(struct net_device *dev, u32 value) | |
670 | { | |
671 | } | |
672 | ||
673 | static u32 bat_get_link(struct net_device *dev) | |
674 | { | |
675 | return 1; | |
676 | } | |
677 | ||
678 | static u32 bat_get_rx_csum(struct net_device *dev) | |
679 | { | |
680 | return 0; | |
681 | } | |
682 | ||
683 | static int bat_set_rx_csum(struct net_device *dev, u32 data) | |
684 | { | |
685 | return -EOPNOTSUPP; | |
686 | } |