Commit | Line | Data |
---|---|---|
f0706e82 JB |
1 | /* |
2 | * Copyright 2002-2005, Instant802 Networks, Inc. | |
3 | * Copyright 2005-2006, Devicescape Software, Inc. | |
4 | * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2 as | |
8 | * published by the Free Software Foundation. | |
9 | */ | |
10 | ||
11 | #include <net/mac80211.h> | |
12 | #include <net/ieee80211_radiotap.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/init.h> | |
15 | #include <linux/netdevice.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/slab.h> | |
18 | #include <linux/skbuff.h> | |
19 | #include <linux/etherdevice.h> | |
20 | #include <linux/if_arp.h> | |
21 | #include <linux/wireless.h> | |
22 | #include <linux/rtnetlink.h> | |
f0706e82 | 23 | #include <linux/bitmap.h> |
881d966b | 24 | #include <net/net_namespace.h> |
f0706e82 JB |
25 | #include <net/cfg80211.h> |
26 | ||
27 | #include "ieee80211_common.h" | |
28 | #include "ieee80211_i.h" | |
29 | #include "ieee80211_rate.h" | |
30 | #include "wep.h" | |
f0706e82 JB |
31 | #include "wme.h" |
32 | #include "aes_ccm.h" | |
33 | #include "ieee80211_led.h" | |
e0eb6859 | 34 | #include "cfg.h" |
e9f207f0 JB |
35 | #include "debugfs.h" |
36 | #include "debugfs_netdev.h" | |
f0706e82 | 37 | |
b306f453 JB |
38 | /* |
39 | * For seeing transmitted packets on monitor interfaces | |
40 | * we have a radiotap header too. | |
41 | */ | |
42 | struct ieee80211_tx_status_rtap_hdr { | |
43 | struct ieee80211_radiotap_header hdr; | |
44 | __le16 tx_flags; | |
45 | u8 data_retries; | |
46 | } __attribute__ ((packed)); | |
47 | ||
b2c258fb | 48 | /* common interface routines */ |
b306f453 | 49 | |
b95cce35 | 50 | static int header_parse_80211(const struct sk_buff *skb, unsigned char *haddr) |
b2c258fb JB |
51 | { |
52 | memcpy(haddr, skb_mac_header(skb) + 10, ETH_ALEN); /* addr2 */ | |
53 | return ETH_ALEN; | |
54 | } | |
f0706e82 | 55 | |
4150c572 JB |
56 | /* must be called under mdev tx lock */ |
57 | static void ieee80211_configure_filter(struct ieee80211_local *local) | |
58 | { | |
59 | unsigned int changed_flags; | |
60 | unsigned int new_flags = 0; | |
61 | ||
53918994 | 62 | if (atomic_read(&local->iff_promiscs)) |
4150c572 JB |
63 | new_flags |= FIF_PROMISC_IN_BSS; |
64 | ||
53918994 | 65 | if (atomic_read(&local->iff_allmultis)) |
4150c572 JB |
66 | new_flags |= FIF_ALLMULTI; |
67 | ||
68 | if (local->monitors) | |
69 | new_flags |= FIF_CONTROL | | |
70 | FIF_OTHER_BSS | | |
71 | FIF_BCN_PRBRESP_PROMISC; | |
72 | ||
73 | changed_flags = local->filter_flags ^ new_flags; | |
74 | ||
75 | /* be a bit nasty */ | |
76 | new_flags |= (1<<31); | |
77 | ||
78 | local->ops->configure_filter(local_to_hw(local), | |
79 | changed_flags, &new_flags, | |
80 | local->mdev->mc_count, | |
81 | local->mdev->mc_list); | |
82 | ||
83 | WARN_ON(new_flags & (1<<31)); | |
84 | ||
85 | local->filter_flags = new_flags & ~(1<<31); | |
86 | } | |
87 | ||
b2c258fb | 88 | /* master interface */ |
f0706e82 | 89 | |
b2c258fb JB |
90 | static int ieee80211_master_open(struct net_device *dev) |
91 | { | |
92 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
93 | struct ieee80211_sub_if_data *sdata; | |
94 | int res = -EOPNOTSUPP; | |
f0706e82 | 95 | |
79010420 JB |
96 | /* we hold the RTNL here so can safely walk the list */ |
97 | list_for_each_entry(sdata, &local->interfaces, list) { | |
b2c258fb JB |
98 | if (sdata->dev != dev && netif_running(sdata->dev)) { |
99 | res = 0; | |
100 | break; | |
101 | } | |
102 | } | |
b2c258fb JB |
103 | return res; |
104 | } | |
f0706e82 | 105 | |
b2c258fb | 106 | static int ieee80211_master_stop(struct net_device *dev) |
f0706e82 | 107 | { |
b2c258fb JB |
108 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
109 | struct ieee80211_sub_if_data *sdata; | |
f0706e82 | 110 | |
79010420 JB |
111 | /* we hold the RTNL here so can safely walk the list */ |
112 | list_for_each_entry(sdata, &local->interfaces, list) | |
b2c258fb JB |
113 | if (sdata->dev != dev && netif_running(sdata->dev)) |
114 | dev_close(sdata->dev); | |
f0706e82 | 115 | |
b2c258fb JB |
116 | return 0; |
117 | } | |
f0706e82 | 118 | |
4150c572 JB |
119 | static void ieee80211_master_set_multicast_list(struct net_device *dev) |
120 | { | |
121 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
122 | ||
123 | ieee80211_configure_filter(local); | |
124 | } | |
125 | ||
b2c258fb | 126 | /* management interface */ |
f0706e82 | 127 | |
b2c258fb JB |
128 | static void |
129 | ieee80211_fill_frame_info(struct ieee80211_local *local, | |
130 | struct ieee80211_frame_info *fi, | |
131 | struct ieee80211_rx_status *status) | |
132 | { | |
133 | if (status) { | |
134 | struct timespec ts; | |
135 | struct ieee80211_rate *rate; | |
f0706e82 | 136 | |
b2c258fb JB |
137 | jiffies_to_timespec(jiffies, &ts); |
138 | fi->hosttime = cpu_to_be64((u64) ts.tv_sec * 1000000 + | |
139 | ts.tv_nsec / 1000); | |
140 | fi->mactime = cpu_to_be64(status->mactime); | |
141 | switch (status->phymode) { | |
f0706e82 | 142 | case MODE_IEEE80211A: |
b2c258fb | 143 | fi->phytype = htonl(ieee80211_phytype_ofdm_dot11_a); |
f0706e82 JB |
144 | break; |
145 | case MODE_IEEE80211B: | |
b2c258fb | 146 | fi->phytype = htonl(ieee80211_phytype_dsss_dot11_b); |
f0706e82 JB |
147 | break; |
148 | case MODE_IEEE80211G: | |
b2c258fb | 149 | fi->phytype = htonl(ieee80211_phytype_pbcc_dot11_g); |
f0706e82 | 150 | break; |
b2c258fb JB |
151 | default: |
152 | fi->phytype = htonl(0xAAAAAAAA); | |
f0706e82 JB |
153 | break; |
154 | } | |
b2c258fb JB |
155 | fi->channel = htonl(status->channel); |
156 | rate = ieee80211_get_rate(local, status->phymode, | |
157 | status->rate); | |
158 | if (rate) { | |
159 | fi->datarate = htonl(rate->rate); | |
160 | if (rate->flags & IEEE80211_RATE_PREAMBLE2) { | |
161 | if (status->rate == rate->val) | |
162 | fi->preamble = htonl(2); /* long */ | |
163 | else if (status->rate == rate->val2) | |
164 | fi->preamble = htonl(1); /* short */ | |
165 | } else | |
166 | fi->preamble = htonl(0); | |
167 | } else { | |
168 | fi->datarate = htonl(0); | |
169 | fi->preamble = htonl(0); | |
170 | } | |
171 | ||
172 | fi->antenna = htonl(status->antenna); | |
173 | fi->priority = htonl(0xffffffff); /* no clue */ | |
174 | fi->ssi_type = htonl(ieee80211_ssi_raw); | |
175 | fi->ssi_signal = htonl(status->ssi); | |
176 | fi->ssi_noise = 0x00000000; | |
177 | fi->encoding = 0; | |
178 | } else { | |
179 | /* clear everything because we really don't know. | |
180 | * the msg_type field isn't present on monitor frames | |
181 | * so we don't know whether it will be present or not, | |
182 | * but it's ok to not clear it since it'll be assigned | |
183 | * anyway */ | |
184 | memset(fi, 0, sizeof(*fi) - sizeof(fi->msg_type)); | |
185 | ||
186 | fi->ssi_type = htonl(ieee80211_ssi_none); | |
187 | } | |
188 | fi->version = htonl(IEEE80211_FI_VERSION); | |
189 | fi->length = cpu_to_be32(sizeof(*fi) - sizeof(fi->msg_type)); | |
190 | } | |
191 | ||
192 | /* this routine is actually not just for this, but also | |
193 | * for pushing fake 'management' frames into userspace. | |
194 | * it shall be replaced by a netlink-based system. */ | |
195 | void | |
196 | ieee80211_rx_mgmt(struct ieee80211_local *local, struct sk_buff *skb, | |
197 | struct ieee80211_rx_status *status, u32 msg_type) | |
198 | { | |
199 | struct ieee80211_frame_info *fi; | |
200 | const size_t hlen = sizeof(struct ieee80211_frame_info); | |
68aae116 | 201 | struct net_device *dev = local->apdev; |
b2c258fb | 202 | |
68aae116 | 203 | skb->dev = dev; |
b2c258fb JB |
204 | |
205 | if (skb_headroom(skb) < hlen) { | |
206 | I802_DEBUG_INC(local->rx_expand_skb_head); | |
207 | if (pskb_expand_head(skb, hlen, 0, GFP_ATOMIC)) { | |
208 | dev_kfree_skb(skb); | |
209 | return; | |
210 | } | |
f0706e82 | 211 | } |
b2c258fb JB |
212 | |
213 | fi = (struct ieee80211_frame_info *) skb_push(skb, hlen); | |
214 | ||
215 | ieee80211_fill_frame_info(local, fi, status); | |
216 | fi->msg_type = htonl(msg_type); | |
217 | ||
68aae116 SH |
218 | dev->stats.rx_packets++; |
219 | dev->stats.rx_bytes += skb->len; | |
b2c258fb JB |
220 | |
221 | skb_set_mac_header(skb, 0); | |
222 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
223 | skb->pkt_type = PACKET_OTHERHOST; | |
224 | skb->protocol = htons(ETH_P_802_2); | |
225 | memset(skb->cb, 0, sizeof(skb->cb)); | |
226 | netif_rx(skb); | |
f0706e82 JB |
227 | } |
228 | ||
b2c258fb | 229 | static int ieee80211_mgmt_open(struct net_device *dev) |
f0706e82 | 230 | { |
b2c258fb | 231 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
f0706e82 | 232 | |
b2c258fb JB |
233 | if (!netif_running(local->mdev)) |
234 | return -EOPNOTSUPP; | |
235 | return 0; | |
e2ebc74d | 236 | } |
f0706e82 | 237 | |
b2c258fb | 238 | static int ieee80211_mgmt_stop(struct net_device *dev) |
e2ebc74d | 239 | { |
b2c258fb JB |
240 | return 0; |
241 | } | |
f0706e82 | 242 | |
b2c258fb JB |
243 | static int ieee80211_change_mtu_apdev(struct net_device *dev, int new_mtu) |
244 | { | |
245 | /* FIX: what would be proper limits for MTU? | |
246 | * This interface uses 802.11 frames. */ | |
247 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN) { | |
248 | printk(KERN_WARNING "%s: invalid MTU %d\n", | |
249 | dev->name, new_mtu); | |
250 | return -EINVAL; | |
f0706e82 | 251 | } |
f0706e82 | 252 | |
b2c258fb JB |
253 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
254 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); | |
255 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
256 | dev->mtu = new_mtu; | |
257 | return 0; | |
e2ebc74d | 258 | } |
f0706e82 | 259 | |
b2c258fb | 260 | void ieee80211_if_mgmt_setup(struct net_device *dev) |
e2ebc74d | 261 | { |
b2c258fb JB |
262 | ether_setup(dev); |
263 | dev->hard_start_xmit = ieee80211_mgmt_start_xmit; | |
264 | dev->change_mtu = ieee80211_change_mtu_apdev; | |
b2c258fb JB |
265 | dev->open = ieee80211_mgmt_open; |
266 | dev->stop = ieee80211_mgmt_stop; | |
267 | dev->type = ARPHRD_IEEE80211_PRISM; | |
b2c258fb | 268 | dev->destructor = ieee80211_if_free; |
f0706e82 JB |
269 | } |
270 | ||
b2c258fb | 271 | /* regular interfaces */ |
f0706e82 | 272 | |
b2c258fb | 273 | static int ieee80211_change_mtu(struct net_device *dev, int new_mtu) |
f0706e82 | 274 | { |
b2c258fb JB |
275 | /* FIX: what would be proper limits for MTU? |
276 | * This interface uses 802.3 frames. */ | |
277 | if (new_mtu < 256 || new_mtu > IEEE80211_MAX_DATA_LEN - 24 - 6) { | |
278 | printk(KERN_WARNING "%s: invalid MTU %d\n", | |
279 | dev->name, new_mtu); | |
280 | return -EINVAL; | |
281 | } | |
f0706e82 | 282 | |
b2c258fb JB |
283 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
284 | printk(KERN_DEBUG "%s: setting MTU %d\n", dev->name, new_mtu); | |
285 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
286 | dev->mtu = new_mtu; | |
f0706e82 JB |
287 | return 0; |
288 | } | |
289 | ||
b2c258fb JB |
290 | static inline int identical_mac_addr_allowed(int type1, int type2) |
291 | { | |
292 | return (type1 == IEEE80211_IF_TYPE_MNTR || | |
293 | type2 == IEEE80211_IF_TYPE_MNTR || | |
294 | (type1 == IEEE80211_IF_TYPE_AP && | |
295 | type2 == IEEE80211_IF_TYPE_WDS) || | |
296 | (type1 == IEEE80211_IF_TYPE_WDS && | |
297 | (type2 == IEEE80211_IF_TYPE_WDS || | |
298 | type2 == IEEE80211_IF_TYPE_AP)) || | |
299 | (type1 == IEEE80211_IF_TYPE_AP && | |
300 | type2 == IEEE80211_IF_TYPE_VLAN) || | |
301 | (type1 == IEEE80211_IF_TYPE_VLAN && | |
302 | (type2 == IEEE80211_IF_TYPE_AP || | |
303 | type2 == IEEE80211_IF_TYPE_VLAN))); | |
304 | } | |
f0706e82 | 305 | |
b2c258fb | 306 | static int ieee80211_open(struct net_device *dev) |
e2ebc74d | 307 | { |
b2c258fb JB |
308 | struct ieee80211_sub_if_data *sdata, *nsdata; |
309 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
310 | struct ieee80211_if_init_conf conf; | |
311 | int res; | |
f0706e82 | 312 | |
b2c258fb | 313 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); |
0ec3ca44 | 314 | |
79010420 JB |
315 | /* we hold the RTNL here so can safely walk the list */ |
316 | list_for_each_entry(nsdata, &local->interfaces, list) { | |
b2c258fb | 317 | struct net_device *ndev = nsdata->dev; |
e2ebc74d | 318 | |
b2c258fb | 319 | if (ndev != dev && ndev != local->mdev && netif_running(ndev) && |
0ec3ca44 JB |
320 | compare_ether_addr(dev->dev_addr, ndev->dev_addr) == 0) { |
321 | /* | |
322 | * check whether it may have the same address | |
323 | */ | |
324 | if (!identical_mac_addr_allowed(sdata->type, | |
79010420 | 325 | nsdata->type)) |
0ec3ca44 | 326 | return -ENOTUNIQ; |
0ec3ca44 JB |
327 | |
328 | /* | |
329 | * can only add VLANs to enabled APs | |
330 | */ | |
331 | if (sdata->type == IEEE80211_IF_TYPE_VLAN && | |
332 | nsdata->type == IEEE80211_IF_TYPE_AP && | |
333 | netif_running(nsdata->dev)) | |
334 | sdata->u.vlan.ap = nsdata; | |
b2c258fb JB |
335 | } |
336 | } | |
f0706e82 | 337 | |
0ec3ca44 JB |
338 | switch (sdata->type) { |
339 | case IEEE80211_IF_TYPE_WDS: | |
340 | if (is_zero_ether_addr(sdata->u.wds.remote_addr)) | |
341 | return -ENOLINK; | |
342 | break; | |
343 | case IEEE80211_IF_TYPE_VLAN: | |
344 | if (!sdata->u.vlan.ap) | |
345 | return -ENOLINK; | |
346 | break; | |
fb1c1cd6 JB |
347 | case IEEE80211_IF_TYPE_AP: |
348 | case IEEE80211_IF_TYPE_MGMT: | |
349 | case IEEE80211_IF_TYPE_STA: | |
350 | case IEEE80211_IF_TYPE_MNTR: | |
351 | case IEEE80211_IF_TYPE_IBSS: | |
352 | /* no special treatment */ | |
353 | break; | |
0ec3ca44 | 354 | } |
f0706e82 | 355 | |
b2c258fb JB |
356 | if (local->open_count == 0) { |
357 | res = 0; | |
4150c572 JB |
358 | if (local->ops->start) |
359 | res = local->ops->start(local_to_hw(local)); | |
360 | if (res) | |
b2c258fb | 361 | return res; |
b2c258fb | 362 | } |
f0706e82 | 363 | |
4150c572 | 364 | switch (sdata->type) { |
0ec3ca44 JB |
365 | case IEEE80211_IF_TYPE_VLAN: |
366 | list_add(&sdata->u.vlan.list, &sdata->u.vlan.ap->u.ap.vlans); | |
367 | /* no need to tell driver */ | |
368 | break; | |
4150c572 JB |
369 | case IEEE80211_IF_TYPE_MNTR: |
370 | /* must be before the call to ieee80211_configure_filter */ | |
b2c258fb | 371 | local->monitors++; |
4150c572 JB |
372 | if (local->monitors == 1) { |
373 | netif_tx_lock_bh(local->mdev); | |
374 | ieee80211_configure_filter(local); | |
375 | netif_tx_unlock_bh(local->mdev); | |
376 | ||
377 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; | |
378 | ieee80211_hw_config(local); | |
379 | } | |
380 | break; | |
381 | case IEEE80211_IF_TYPE_STA: | |
382 | case IEEE80211_IF_TYPE_IBSS: | |
383 | sdata->u.sta.flags &= ~IEEE80211_STA_PREV_BSSID_SET; | |
384 | /* fall through */ | |
385 | default: | |
386 | conf.if_id = dev->ifindex; | |
387 | conf.type = sdata->type; | |
388 | conf.mac_addr = dev->dev_addr; | |
389 | res = local->ops->add_interface(local_to_hw(local), &conf); | |
390 | if (res && !local->open_count && local->ops->stop) | |
391 | local->ops->stop(local_to_hw(local)); | |
392 | if (res) | |
393 | return res; | |
394 | ||
b2c258fb | 395 | ieee80211_if_config(dev); |
d9430a32 | 396 | ieee80211_reset_erp_info(dev); |
11a843b7 | 397 | ieee80211_enable_keys(sdata); |
4150c572 JB |
398 | |
399 | if (sdata->type == IEEE80211_IF_TYPE_STA && | |
400 | !local->user_space_mlme) | |
401 | netif_carrier_off(dev); | |
402 | else | |
403 | netif_carrier_on(dev); | |
d9430a32 | 404 | } |
f0706e82 | 405 | |
4150c572 JB |
406 | if (local->open_count == 0) { |
407 | res = dev_open(local->mdev); | |
408 | WARN_ON(res); | |
409 | if (local->apdev) { | |
410 | res = dev_open(local->apdev); | |
411 | WARN_ON(res); | |
412 | } | |
413 | tasklet_enable(&local->tx_pending_tasklet); | |
414 | tasklet_enable(&local->tasklet); | |
415 | } | |
416 | ||
417 | local->open_count++; | |
f0706e82 | 418 | |
b2c258fb | 419 | netif_start_queue(dev); |
4150c572 | 420 | |
b2c258fb | 421 | return 0; |
f0706e82 | 422 | } |
f0706e82 | 423 | |
4150c572 | 424 | static int ieee80211_stop(struct net_device *dev) |
f0706e82 | 425 | { |
4150c572 | 426 | struct ieee80211_sub_if_data *sdata; |
f0706e82 | 427 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
4150c572 JB |
428 | struct ieee80211_if_init_conf conf; |
429 | ||
430 | sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
431 | ||
432 | netif_stop_queue(dev); | |
433 | ||
434 | dev_mc_unsync(local->mdev, dev); | |
435 | ||
0ec3ca44 JB |
436 | /* down all dependent devices, that is VLANs */ |
437 | if (sdata->type == IEEE80211_IF_TYPE_AP) { | |
438 | struct ieee80211_sub_if_data *vlan, *tmp; | |
439 | ||
440 | list_for_each_entry_safe(vlan, tmp, &sdata->u.ap.vlans, | |
441 | u.vlan.list) | |
442 | dev_close(vlan->dev); | |
443 | WARN_ON(!list_empty(&sdata->u.ap.vlans)); | |
444 | } | |
445 | ||
4150c572 | 446 | local->open_count--; |
f0706e82 | 447 | |
b2c258fb | 448 | switch (sdata->type) { |
0ec3ca44 JB |
449 | case IEEE80211_IF_TYPE_VLAN: |
450 | list_del(&sdata->u.vlan.list); | |
451 | sdata->u.vlan.ap = NULL; | |
452 | /* no need to tell driver */ | |
453 | break; | |
4150c572 JB |
454 | case IEEE80211_IF_TYPE_MNTR: |
455 | local->monitors--; | |
456 | if (local->monitors == 0) { | |
457 | netif_tx_lock_bh(local->mdev); | |
458 | ieee80211_configure_filter(local); | |
459 | netif_tx_unlock_bh(local->mdev); | |
460 | ||
461 | local->hw.conf.flags |= IEEE80211_CONF_RADIOTAP; | |
462 | ieee80211_hw_config(local); | |
463 | } | |
464 | break; | |
b2c258fb JB |
465 | case IEEE80211_IF_TYPE_STA: |
466 | case IEEE80211_IF_TYPE_IBSS: | |
467 | sdata->u.sta.state = IEEE80211_DISABLED; | |
468 | del_timer_sync(&sdata->u.sta.timer); | |
2a8a9a88 | 469 | /* |
79010420 JB |
470 | * When we get here, the interface is marked down. |
471 | * Call synchronize_rcu() to wait for the RX path | |
472 | * should it be using the interface and enqueuing | |
473 | * frames at this very time on another CPU. | |
2a8a9a88 | 474 | */ |
79010420 | 475 | synchronize_rcu(); |
b2c258fb | 476 | skb_queue_purge(&sdata->u.sta.skb_queue); |
2a8a9a88 | 477 | |
b2c258fb JB |
478 | if (!local->ops->hw_scan && |
479 | local->scan_dev == sdata->dev) { | |
480 | local->sta_scanning = 0; | |
481 | cancel_delayed_work(&local->scan_work); | |
482 | } | |
483 | flush_workqueue(local->hw.workqueue); | |
4150c572 JB |
484 | /* fall through */ |
485 | default: | |
486 | conf.if_id = dev->ifindex; | |
487 | conf.type = sdata->type; | |
488 | conf.mac_addr = dev->dev_addr; | |
11a843b7 JB |
489 | /* disable all keys for as long as this netdev is down */ |
490 | ieee80211_disable_keys(sdata); | |
4150c572 | 491 | local->ops->remove_interface(local_to_hw(local), &conf); |
f0706e82 JB |
492 | } |
493 | ||
b2c258fb JB |
494 | if (local->open_count == 0) { |
495 | if (netif_running(local->mdev)) | |
496 | dev_close(local->mdev); | |
4150c572 | 497 | |
b2c258fb JB |
498 | if (local->apdev) |
499 | dev_close(local->apdev); | |
4150c572 | 500 | |
b2c258fb JB |
501 | if (local->ops->stop) |
502 | local->ops->stop(local_to_hw(local)); | |
4150c572 | 503 | |
b2c258fb JB |
504 | tasklet_disable(&local->tx_pending_tasklet); |
505 | tasklet_disable(&local->tasklet); | |
506 | } | |
b2c258fb | 507 | |
f0706e82 JB |
508 | return 0; |
509 | } | |
510 | ||
f0706e82 JB |
511 | static void ieee80211_set_multicast_list(struct net_device *dev) |
512 | { | |
513 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
514 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
4150c572 | 515 | int allmulti, promisc, sdata_allmulti, sdata_promisc; |
f0706e82 | 516 | |
4150c572 JB |
517 | allmulti = !!(dev->flags & IFF_ALLMULTI); |
518 | promisc = !!(dev->flags & IFF_PROMISC); | |
519 | sdata_allmulti = sdata->flags & IEEE80211_SDATA_ALLMULTI; | |
520 | sdata_promisc = sdata->flags & IEEE80211_SDATA_PROMISC; | |
521 | ||
522 | if (allmulti != sdata_allmulti) { | |
523 | if (dev->flags & IFF_ALLMULTI) | |
53918994 | 524 | atomic_inc(&local->iff_allmultis); |
4150c572 | 525 | else |
53918994 | 526 | atomic_dec(&local->iff_allmultis); |
13262ffd | 527 | sdata->flags ^= IEEE80211_SDATA_ALLMULTI; |
f0706e82 | 528 | } |
4150c572 JB |
529 | |
530 | if (promisc != sdata_promisc) { | |
531 | if (dev->flags & IFF_PROMISC) | |
53918994 | 532 | atomic_inc(&local->iff_promiscs); |
4150c572 | 533 | else |
53918994 | 534 | atomic_dec(&local->iff_promiscs); |
13262ffd | 535 | sdata->flags ^= IEEE80211_SDATA_PROMISC; |
f0706e82 | 536 | } |
4150c572 JB |
537 | |
538 | dev_mc_sync(local->mdev, dev); | |
f0706e82 JB |
539 | } |
540 | ||
3b04ddde SH |
541 | static const struct header_ops ieee80211_header_ops = { |
542 | .create = eth_header, | |
543 | .parse = header_parse_80211, | |
544 | .rebuild = eth_rebuild_header, | |
545 | .cache = eth_header_cache, | |
546 | .cache_update = eth_header_cache_update, | |
547 | }; | |
548 | ||
b2c258fb JB |
549 | /* Must not be called for mdev and apdev */ |
550 | void ieee80211_if_setup(struct net_device *dev) | |
f0706e82 | 551 | { |
b2c258fb | 552 | ether_setup(dev); |
3b04ddde | 553 | dev->header_ops = &ieee80211_header_ops; |
b2c258fb JB |
554 | dev->hard_start_xmit = ieee80211_subif_start_xmit; |
555 | dev->wireless_handlers = &ieee80211_iw_handler_def; | |
556 | dev->set_multicast_list = ieee80211_set_multicast_list; | |
557 | dev->change_mtu = ieee80211_change_mtu; | |
b2c258fb JB |
558 | dev->open = ieee80211_open; |
559 | dev->stop = ieee80211_stop; | |
b2c258fb JB |
560 | dev->destructor = ieee80211_if_free; |
561 | } | |
f0706e82 | 562 | |
b2c258fb JB |
563 | /* WDS specialties */ |
564 | ||
565 | int ieee80211_if_update_wds(struct net_device *dev, u8 *remote_addr) | |
566 | { | |
567 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
568 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
569 | struct sta_info *sta; | |
0795af57 | 570 | DECLARE_MAC_BUF(mac); |
b2c258fb JB |
571 | |
572 | if (compare_ether_addr(remote_addr, sdata->u.wds.remote_addr) == 0) | |
573 | return 0; | |
574 | ||
575 | /* Create STA entry for the new peer */ | |
576 | sta = sta_info_add(local, dev, remote_addr, GFP_KERNEL); | |
577 | if (!sta) | |
578 | return -ENOMEM; | |
579 | sta_info_put(sta); | |
580 | ||
581 | /* Remove STA entry for the old peer */ | |
582 | sta = sta_info_get(local, sdata->u.wds.remote_addr); | |
583 | if (sta) { | |
be8755e1 | 584 | sta_info_free(sta); |
b2c258fb | 585 | sta_info_put(sta); |
b2c258fb JB |
586 | } else { |
587 | printk(KERN_DEBUG "%s: could not find STA entry for WDS link " | |
0795af57 JP |
588 | "peer %s\n", |
589 | dev->name, print_mac(mac, sdata->u.wds.remote_addr)); | |
b2c258fb JB |
590 | } |
591 | ||
592 | /* Update WDS link data */ | |
593 | memcpy(&sdata->u.wds.remote_addr, remote_addr, ETH_ALEN); | |
594 | ||
595 | return 0; | |
f0706e82 | 596 | } |
f0706e82 | 597 | |
b2c258fb JB |
598 | /* everything else */ |
599 | ||
b2c258fb JB |
600 | static int __ieee80211_if_config(struct net_device *dev, |
601 | struct sk_buff *beacon, | |
602 | struct ieee80211_tx_control *control) | |
603 | { | |
604 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
605 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
606 | struct ieee80211_if_conf conf; | |
b2c258fb JB |
607 | |
608 | if (!local->ops->config_interface || !netif_running(dev)) | |
f0706e82 | 609 | return 0; |
f0706e82 | 610 | |
b2c258fb | 611 | memset(&conf, 0, sizeof(conf)); |
4480f15c | 612 | conf.type = sdata->type; |
b2c258fb JB |
613 | if (sdata->type == IEEE80211_IF_TYPE_STA || |
614 | sdata->type == IEEE80211_IF_TYPE_IBSS) { | |
4150c572 | 615 | conf.bssid = sdata->u.sta.bssid; |
b2c258fb JB |
616 | conf.ssid = sdata->u.sta.ssid; |
617 | conf.ssid_len = sdata->u.sta.ssid_len; | |
b2c258fb JB |
618 | } else if (sdata->type == IEEE80211_IF_TYPE_AP) { |
619 | conf.ssid = sdata->u.ap.ssid; | |
620 | conf.ssid_len = sdata->u.ap.ssid_len; | |
b2c258fb JB |
621 | conf.beacon = beacon; |
622 | conf.beacon_control = control; | |
f0706e82 | 623 | } |
b2c258fb JB |
624 | return local->ops->config_interface(local_to_hw(local), |
625 | dev->ifindex, &conf); | |
f0706e82 JB |
626 | } |
627 | ||
b2c258fb JB |
628 | int ieee80211_if_config(struct net_device *dev) |
629 | { | |
630 | return __ieee80211_if_config(dev, NULL, NULL); | |
631 | } | |
f0706e82 | 632 | |
b2c258fb | 633 | int ieee80211_if_config_beacon(struct net_device *dev) |
f0706e82 | 634 | { |
f0706e82 | 635 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); |
b2c258fb JB |
636 | struct ieee80211_tx_control control; |
637 | struct sk_buff *skb; | |
f0706e82 | 638 | |
b2c258fb | 639 | if (!(local->hw.flags & IEEE80211_HW_HOST_GEN_BEACON_TEMPLATE)) |
f0706e82 | 640 | return 0; |
b2c258fb JB |
641 | skb = ieee80211_beacon_get(local_to_hw(local), dev->ifindex, &control); |
642 | if (!skb) | |
643 | return -ENOMEM; | |
644 | return __ieee80211_if_config(dev, skb, &control); | |
645 | } | |
f0706e82 | 646 | |
b2c258fb JB |
647 | int ieee80211_hw_config(struct ieee80211_local *local) |
648 | { | |
649 | struct ieee80211_hw_mode *mode; | |
650 | struct ieee80211_channel *chan; | |
651 | int ret = 0; | |
f0706e82 | 652 | |
b2c258fb JB |
653 | if (local->sta_scanning) { |
654 | chan = local->scan_channel; | |
655 | mode = local->scan_hw_mode; | |
656 | } else { | |
657 | chan = local->oper_channel; | |
658 | mode = local->oper_hw_mode; | |
f0706e82 JB |
659 | } |
660 | ||
b2c258fb JB |
661 | local->hw.conf.channel = chan->chan; |
662 | local->hw.conf.channel_val = chan->val; | |
61609bc0 MB |
663 | if (!local->hw.conf.power_level) { |
664 | local->hw.conf.power_level = chan->power_level; | |
665 | } else { | |
666 | local->hw.conf.power_level = min(chan->power_level, | |
667 | local->hw.conf.power_level); | |
668 | } | |
b2c258fb JB |
669 | local->hw.conf.freq = chan->freq; |
670 | local->hw.conf.phymode = mode->mode; | |
671 | local->hw.conf.antenna_max = chan->antenna_max; | |
672 | local->hw.conf.chan = chan; | |
673 | local->hw.conf.mode = mode; | |
f0706e82 | 674 | |
b2c258fb JB |
675 | #ifdef CONFIG_MAC80211_VERBOSE_DEBUG |
676 | printk(KERN_DEBUG "HW CONFIG: channel=%d freq=%d " | |
677 | "phymode=%d\n", local->hw.conf.channel, local->hw.conf.freq, | |
678 | local->hw.conf.phymode); | |
679 | #endif /* CONFIG_MAC80211_VERBOSE_DEBUG */ | |
680 | ||
f7c4daed | 681 | if (local->open_count) |
b2c258fb | 682 | ret = local->ops->config(local_to_hw(local), &local->hw.conf); |
f0706e82 | 683 | |
b2c258fb JB |
684 | return ret; |
685 | } | |
f0706e82 | 686 | |
d9430a32 DD |
687 | void ieee80211_erp_info_change_notify(struct net_device *dev, u8 changes) |
688 | { | |
689 | struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); | |
690 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
691 | if (local->ops->erp_ie_changed) | |
692 | local->ops->erp_ie_changed(local_to_hw(local), changes, | |
13262ffd JS |
693 | !!(sdata->flags & IEEE80211_SDATA_USE_PROTECTION), |
694 | !(sdata->flags & IEEE80211_SDATA_SHORT_PREAMBLE)); | |
d9430a32 DD |
695 | } |
696 | ||
697 | void ieee80211_reset_erp_info(struct net_device *dev) | |
698 | { | |
699 | struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); | |
700 | ||
13262ffd JS |
701 | sdata->flags &= ~(IEEE80211_SDATA_USE_PROTECTION | |
702 | IEEE80211_SDATA_SHORT_PREAMBLE); | |
d9430a32 DD |
703 | ieee80211_erp_info_change_notify(dev, |
704 | IEEE80211_ERP_CHANGE_PROTECTION | | |
705 | IEEE80211_ERP_CHANGE_PREAMBLE); | |
706 | } | |
707 | ||
f0706e82 JB |
708 | void ieee80211_tx_status_irqsafe(struct ieee80211_hw *hw, |
709 | struct sk_buff *skb, | |
710 | struct ieee80211_tx_status *status) | |
711 | { | |
712 | struct ieee80211_local *local = hw_to_local(hw); | |
713 | struct ieee80211_tx_status *saved; | |
714 | int tmp; | |
715 | ||
716 | skb->dev = local->mdev; | |
717 | saved = kmalloc(sizeof(struct ieee80211_tx_status), GFP_ATOMIC); | |
718 | if (unlikely(!saved)) { | |
719 | if (net_ratelimit()) | |
720 | printk(KERN_WARNING "%s: Not enough memory, " | |
721 | "dropping tx status", skb->dev->name); | |
722 | /* should be dev_kfree_skb_irq, but due to this function being | |
723 | * named _irqsafe instead of just _irq we can't be sure that | |
724 | * people won't call it from non-irq contexts */ | |
725 | dev_kfree_skb_any(skb); | |
726 | return; | |
727 | } | |
728 | memcpy(saved, status, sizeof(struct ieee80211_tx_status)); | |
729 | /* copy pointer to saved status into skb->cb for use by tasklet */ | |
730 | memcpy(skb->cb, &saved, sizeof(saved)); | |
731 | ||
732 | skb->pkt_type = IEEE80211_TX_STATUS_MSG; | |
733 | skb_queue_tail(status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS ? | |
734 | &local->skb_queue : &local->skb_queue_unreliable, skb); | |
735 | tmp = skb_queue_len(&local->skb_queue) + | |
736 | skb_queue_len(&local->skb_queue_unreliable); | |
737 | while (tmp > IEEE80211_IRQSAFE_QUEUE_LIMIT && | |
738 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
739 | memcpy(&saved, skb->cb, sizeof(saved)); | |
740 | kfree(saved); | |
741 | dev_kfree_skb_irq(skb); | |
742 | tmp--; | |
743 | I802_DEBUG_INC(local->tx_status_drop); | |
744 | } | |
745 | tasklet_schedule(&local->tasklet); | |
746 | } | |
747 | EXPORT_SYMBOL(ieee80211_tx_status_irqsafe); | |
748 | ||
749 | static void ieee80211_tasklet_handler(unsigned long data) | |
750 | { | |
751 | struct ieee80211_local *local = (struct ieee80211_local *) data; | |
752 | struct sk_buff *skb; | |
753 | struct ieee80211_rx_status rx_status; | |
754 | struct ieee80211_tx_status *tx_status; | |
755 | ||
756 | while ((skb = skb_dequeue(&local->skb_queue)) || | |
757 | (skb = skb_dequeue(&local->skb_queue_unreliable))) { | |
758 | switch (skb->pkt_type) { | |
759 | case IEEE80211_RX_MSG: | |
760 | /* status is in skb->cb */ | |
761 | memcpy(&rx_status, skb->cb, sizeof(rx_status)); | |
762 | /* Clear skb->type in order to not confuse kernel | |
763 | * netstack. */ | |
764 | skb->pkt_type = 0; | |
765 | __ieee80211_rx(local_to_hw(local), skb, &rx_status); | |
766 | break; | |
767 | case IEEE80211_TX_STATUS_MSG: | |
768 | /* get pointer to saved status out of skb->cb */ | |
769 | memcpy(&tx_status, skb->cb, sizeof(tx_status)); | |
770 | skb->pkt_type = 0; | |
771 | ieee80211_tx_status(local_to_hw(local), | |
772 | skb, tx_status); | |
773 | kfree(tx_status); | |
774 | break; | |
775 | default: /* should never get here! */ | |
776 | printk(KERN_ERR "%s: Unknown message type (%d)\n", | |
dd1cd4c6 | 777 | wiphy_name(local->hw.wiphy), skb->pkt_type); |
f0706e82 JB |
778 | dev_kfree_skb(skb); |
779 | break; | |
780 | } | |
781 | } | |
782 | } | |
783 | ||
f0706e82 JB |
784 | /* Remove added headers (e.g., QoS control), encryption header/MIC, etc. to |
785 | * make a prepared TX frame (one that has been given to hw) to look like brand | |
786 | * new IEEE 802.11 frame that is ready to go through TX processing again. | |
787 | * Also, tx_packet_data in cb is restored from tx_control. */ | |
788 | static void ieee80211_remove_tx_extra(struct ieee80211_local *local, | |
789 | struct ieee80211_key *key, | |
790 | struct sk_buff *skb, | |
791 | struct ieee80211_tx_control *control) | |
792 | { | |
793 | int hdrlen, iv_len, mic_len; | |
794 | struct ieee80211_tx_packet_data *pkt_data; | |
795 | ||
796 | pkt_data = (struct ieee80211_tx_packet_data *)skb->cb; | |
797 | pkt_data->ifindex = control->ifindex; | |
e8bf9649 JS |
798 | pkt_data->flags = 0; |
799 | if (control->flags & IEEE80211_TXCTL_REQ_TX_STATUS) | |
800 | pkt_data->flags |= IEEE80211_TXPD_REQ_TX_STATUS; | |
801 | if (control->flags & IEEE80211_TXCTL_DO_NOT_ENCRYPT) | |
802 | pkt_data->flags |= IEEE80211_TXPD_DO_NOT_ENCRYPT; | |
803 | if (control->flags & IEEE80211_TXCTL_REQUEUE) | |
804 | pkt_data->flags |= IEEE80211_TXPD_REQUEUE; | |
805 | if (control->type == IEEE80211_IF_TYPE_MGMT) | |
806 | pkt_data->flags |= IEEE80211_TXPD_MGMT_IFACE; | |
f0706e82 JB |
807 | pkt_data->queue = control->queue; |
808 | ||
809 | hdrlen = ieee80211_get_hdrlen_from_skb(skb); | |
810 | ||
811 | if (!key) | |
812 | goto no_key; | |
813 | ||
8f20fc24 | 814 | switch (key->conf.alg) { |
f0706e82 JB |
815 | case ALG_WEP: |
816 | iv_len = WEP_IV_LEN; | |
817 | mic_len = WEP_ICV_LEN; | |
818 | break; | |
819 | case ALG_TKIP: | |
820 | iv_len = TKIP_IV_LEN; | |
821 | mic_len = TKIP_ICV_LEN; | |
822 | break; | |
823 | case ALG_CCMP: | |
824 | iv_len = CCMP_HDR_LEN; | |
825 | mic_len = CCMP_MIC_LEN; | |
826 | break; | |
827 | default: | |
828 | goto no_key; | |
829 | } | |
830 | ||
8f20fc24 | 831 | if (skb->len >= mic_len && |
11a843b7 | 832 | !(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) |
f0706e82 JB |
833 | skb_trim(skb, skb->len - mic_len); |
834 | if (skb->len >= iv_len && skb->len > hdrlen) { | |
835 | memmove(skb->data + iv_len, skb->data, hdrlen); | |
836 | skb_pull(skb, iv_len); | |
837 | } | |
838 | ||
839 | no_key: | |
840 | { | |
841 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
842 | u16 fc = le16_to_cpu(hdr->frame_control); | |
843 | if ((fc & 0x8C) == 0x88) /* QoS Control Field */ { | |
844 | fc &= ~IEEE80211_STYPE_QOS_DATA; | |
845 | hdr->frame_control = cpu_to_le16(fc); | |
846 | memmove(skb->data + 2, skb->data, hdrlen - 2); | |
847 | skb_pull(skb, 2); | |
848 | } | |
849 | } | |
850 | } | |
851 | ||
f0706e82 JB |
852 | void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb, |
853 | struct ieee80211_tx_status *status) | |
854 | { | |
855 | struct sk_buff *skb2; | |
856 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; | |
857 | struct ieee80211_local *local = hw_to_local(hw); | |
858 | u16 frag, type; | |
859 | u32 msg_type; | |
b306f453 JB |
860 | struct ieee80211_tx_status_rtap_hdr *rthdr; |
861 | struct ieee80211_sub_if_data *sdata; | |
862 | int monitors; | |
f0706e82 JB |
863 | |
864 | if (!status) { | |
865 | printk(KERN_ERR | |
866 | "%s: ieee80211_tx_status called with NULL status\n", | |
dd1cd4c6 | 867 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
868 | dev_kfree_skb(skb); |
869 | return; | |
870 | } | |
871 | ||
872 | if (status->excessive_retries) { | |
873 | struct sta_info *sta; | |
874 | sta = sta_info_get(local, hdr->addr1); | |
875 | if (sta) { | |
876 | if (sta->flags & WLAN_STA_PS) { | |
877 | /* The STA is in power save mode, so assume | |
878 | * that this TX packet failed because of that. | |
879 | */ | |
880 | status->excessive_retries = 0; | |
881 | status->flags |= IEEE80211_TX_STATUS_TX_FILTERED; | |
882 | } | |
883 | sta_info_put(sta); | |
884 | } | |
885 | } | |
886 | ||
887 | if (status->flags & IEEE80211_TX_STATUS_TX_FILTERED) { | |
888 | struct sta_info *sta; | |
889 | sta = sta_info_get(local, hdr->addr1); | |
890 | if (sta) { | |
891 | sta->tx_filtered_count++; | |
892 | ||
893 | /* Clear the TX filter mask for this STA when sending | |
894 | * the next packet. If the STA went to power save mode, | |
895 | * this will happen when it is waking up for the next | |
896 | * time. */ | |
897 | sta->clear_dst_mask = 1; | |
898 | ||
899 | /* TODO: Is the WLAN_STA_PS flag always set here or is | |
900 | * the race between RX and TX status causing some | |
901 | * packets to be filtered out before 80211.o gets an | |
902 | * update for PS status? This seems to be the case, so | |
903 | * no changes are likely to be needed. */ | |
904 | if (sta->flags & WLAN_STA_PS && | |
905 | skb_queue_len(&sta->tx_filtered) < | |
906 | STA_MAX_TX_BUFFER) { | |
907 | ieee80211_remove_tx_extra(local, sta->key, | |
908 | skb, | |
909 | &status->control); | |
910 | skb_queue_tail(&sta->tx_filtered, skb); | |
911 | } else if (!(sta->flags & WLAN_STA_PS) && | |
912 | !(status->control.flags & IEEE80211_TXCTL_REQUEUE)) { | |
913 | /* Software retry the packet once */ | |
914 | status->control.flags |= IEEE80211_TXCTL_REQUEUE; | |
915 | ieee80211_remove_tx_extra(local, sta->key, | |
916 | skb, | |
917 | &status->control); | |
918 | dev_queue_xmit(skb); | |
919 | } else { | |
920 | if (net_ratelimit()) { | |
921 | printk(KERN_DEBUG "%s: dropped TX " | |
922 | "filtered frame queue_len=%d " | |
923 | "PS=%d @%lu\n", | |
dd1cd4c6 | 924 | wiphy_name(local->hw.wiphy), |
f0706e82 JB |
925 | skb_queue_len( |
926 | &sta->tx_filtered), | |
927 | !!(sta->flags & WLAN_STA_PS), | |
928 | jiffies); | |
929 | } | |
930 | dev_kfree_skb(skb); | |
931 | } | |
932 | sta_info_put(sta); | |
933 | return; | |
934 | } | |
935 | } else { | |
936 | /* FIXME: STUPID to call this with both local and local->mdev */ | |
937 | rate_control_tx_status(local, local->mdev, skb, status); | |
938 | } | |
939 | ||
940 | ieee80211_led_tx(local, 0); | |
941 | ||
942 | /* SNMP counters | |
943 | * Fragments are passed to low-level drivers as separate skbs, so these | |
944 | * are actually fragments, not frames. Update frame counters only for | |
945 | * the first fragment of the frame. */ | |
946 | ||
947 | frag = le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_FRAG; | |
948 | type = le16_to_cpu(hdr->frame_control) & IEEE80211_FCTL_FTYPE; | |
949 | ||
950 | if (status->flags & IEEE80211_TX_STATUS_ACK) { | |
951 | if (frag == 0) { | |
952 | local->dot11TransmittedFrameCount++; | |
953 | if (is_multicast_ether_addr(hdr->addr1)) | |
954 | local->dot11MulticastTransmittedFrameCount++; | |
955 | if (status->retry_count > 0) | |
956 | local->dot11RetryCount++; | |
957 | if (status->retry_count > 1) | |
958 | local->dot11MultipleRetryCount++; | |
959 | } | |
960 | ||
961 | /* This counter shall be incremented for an acknowledged MPDU | |
962 | * with an individual address in the address 1 field or an MPDU | |
963 | * with a multicast address in the address 1 field of type Data | |
964 | * or Management. */ | |
965 | if (!is_multicast_ether_addr(hdr->addr1) || | |
966 | type == IEEE80211_FTYPE_DATA || | |
967 | type == IEEE80211_FTYPE_MGMT) | |
968 | local->dot11TransmittedFragmentCount++; | |
969 | } else { | |
970 | if (frag == 0) | |
971 | local->dot11FailedCount++; | |
972 | } | |
973 | ||
b306f453 JB |
974 | msg_type = (status->flags & IEEE80211_TX_STATUS_ACK) ? |
975 | ieee80211_msg_tx_callback_ack : ieee80211_msg_tx_callback_fail; | |
976 | ||
977 | /* this was a transmitted frame, but now we want to reuse it */ | |
978 | skb_orphan(skb); | |
979 | ||
980 | if ((status->control.flags & IEEE80211_TXCTL_REQ_TX_STATUS) && | |
981 | local->apdev) { | |
982 | if (local->monitors) { | |
983 | skb2 = skb_clone(skb, GFP_ATOMIC); | |
984 | } else { | |
985 | skb2 = skb; | |
986 | skb = NULL; | |
987 | } | |
988 | ||
989 | if (skb2) | |
990 | /* Send frame to hostapd */ | |
991 | ieee80211_rx_mgmt(local, skb2, NULL, msg_type); | |
992 | ||
993 | if (!skb) | |
994 | return; | |
995 | } | |
996 | ||
997 | if (!local->monitors) { | |
f0706e82 JB |
998 | dev_kfree_skb(skb); |
999 | return; | |
1000 | } | |
1001 | ||
b306f453 | 1002 | /* send frame to monitor interfaces now */ |
f0706e82 | 1003 | |
b306f453 JB |
1004 | if (skb_headroom(skb) < sizeof(*rthdr)) { |
1005 | printk(KERN_ERR "ieee80211_tx_status: headroom too small\n"); | |
f0706e82 JB |
1006 | dev_kfree_skb(skb); |
1007 | return; | |
1008 | } | |
f0706e82 | 1009 | |
b306f453 JB |
1010 | rthdr = (struct ieee80211_tx_status_rtap_hdr*) |
1011 | skb_push(skb, sizeof(*rthdr)); | |
1012 | ||
1013 | memset(rthdr, 0, sizeof(*rthdr)); | |
1014 | rthdr->hdr.it_len = cpu_to_le16(sizeof(*rthdr)); | |
1015 | rthdr->hdr.it_present = | |
1016 | cpu_to_le32((1 << IEEE80211_RADIOTAP_TX_FLAGS) | | |
1017 | (1 << IEEE80211_RADIOTAP_DATA_RETRIES)); | |
1018 | ||
1019 | if (!(status->flags & IEEE80211_TX_STATUS_ACK) && | |
1020 | !is_multicast_ether_addr(hdr->addr1)) | |
1021 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_FAIL); | |
1022 | ||
1023 | if ((status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) && | |
1024 | (status->control.flags & IEEE80211_TXCTL_USE_CTS_PROTECT)) | |
1025 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_CTS); | |
1026 | else if (status->control.flags & IEEE80211_TXCTL_USE_RTS_CTS) | |
1027 | rthdr->tx_flags |= cpu_to_le16(IEEE80211_RADIOTAP_F_TX_RTS); | |
1028 | ||
1029 | rthdr->data_retries = status->retry_count; | |
1030 | ||
79010420 | 1031 | rcu_read_lock(); |
b306f453 | 1032 | monitors = local->monitors; |
79010420 | 1033 | list_for_each_entry_rcu(sdata, &local->interfaces, list) { |
b306f453 JB |
1034 | /* |
1035 | * Using the monitors counter is possibly racy, but | |
1036 | * if the value is wrong we simply either clone the skb | |
1037 | * once too much or forget sending it to one monitor iface | |
1038 | * The latter case isn't nice but fixing the race is much | |
1039 | * more complicated. | |
1040 | */ | |
1041 | if (!monitors || !skb) | |
1042 | goto out; | |
1043 | ||
1044 | if (sdata->type == IEEE80211_IF_TYPE_MNTR) { | |
1045 | if (!netif_running(sdata->dev)) | |
1046 | continue; | |
1047 | monitors--; | |
1048 | if (monitors) | |
79010420 | 1049 | skb2 = skb_clone(skb, GFP_ATOMIC); |
b306f453 JB |
1050 | else |
1051 | skb2 = NULL; | |
1052 | skb->dev = sdata->dev; | |
1053 | /* XXX: is this sufficient for BPF? */ | |
1054 | skb_set_mac_header(skb, 0); | |
1055 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1056 | skb->pkt_type = PACKET_OTHERHOST; | |
1057 | skb->protocol = htons(ETH_P_802_2); | |
1058 | memset(skb->cb, 0, sizeof(skb->cb)); | |
1059 | netif_rx(skb); | |
1060 | skb = skb2; | |
b306f453 JB |
1061 | } |
1062 | } | |
1063 | out: | |
79010420 | 1064 | rcu_read_unlock(); |
b306f453 JB |
1065 | if (skb) |
1066 | dev_kfree_skb(skb); | |
f0706e82 JB |
1067 | } |
1068 | EXPORT_SYMBOL(ieee80211_tx_status); | |
1069 | ||
f0706e82 JB |
1070 | struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, |
1071 | const struct ieee80211_ops *ops) | |
1072 | { | |
1073 | struct net_device *mdev; | |
1074 | struct ieee80211_local *local; | |
1075 | struct ieee80211_sub_if_data *sdata; | |
1076 | int priv_size; | |
1077 | struct wiphy *wiphy; | |
1078 | ||
1079 | /* Ensure 32-byte alignment of our private data and hw private data. | |
1080 | * We use the wiphy priv data for both our ieee80211_local and for | |
1081 | * the driver's private data | |
1082 | * | |
1083 | * In memory it'll be like this: | |
1084 | * | |
1085 | * +-------------------------+ | |
1086 | * | struct wiphy | | |
1087 | * +-------------------------+ | |
1088 | * | struct ieee80211_local | | |
1089 | * +-------------------------+ | |
1090 | * | driver's private data | | |
1091 | * +-------------------------+ | |
1092 | * | |
1093 | */ | |
1094 | priv_size = ((sizeof(struct ieee80211_local) + | |
1095 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST) + | |
1096 | priv_data_len; | |
1097 | ||
1098 | wiphy = wiphy_new(&mac80211_config_ops, priv_size); | |
1099 | ||
1100 | if (!wiphy) | |
1101 | return NULL; | |
1102 | ||
1103 | wiphy->privid = mac80211_wiphy_privid; | |
1104 | ||
1105 | local = wiphy_priv(wiphy); | |
1106 | local->hw.wiphy = wiphy; | |
1107 | ||
1108 | local->hw.priv = (char *)local + | |
1109 | ((sizeof(struct ieee80211_local) + | |
1110 | NETDEV_ALIGN_CONST) & ~NETDEV_ALIGN_CONST); | |
1111 | ||
4480f15c | 1112 | BUG_ON(!ops->tx); |
4150c572 JB |
1113 | BUG_ON(!ops->start); |
1114 | BUG_ON(!ops->stop); | |
4480f15c JB |
1115 | BUG_ON(!ops->config); |
1116 | BUG_ON(!ops->add_interface); | |
4150c572 JB |
1117 | BUG_ON(!ops->remove_interface); |
1118 | BUG_ON(!ops->configure_filter); | |
f0706e82 JB |
1119 | local->ops = ops; |
1120 | ||
1121 | /* for now, mdev needs sub_if_data :/ */ | |
1122 | mdev = alloc_netdev(sizeof(struct ieee80211_sub_if_data), | |
1123 | "wmaster%d", ether_setup); | |
1124 | if (!mdev) { | |
1125 | wiphy_free(wiphy); | |
1126 | return NULL; | |
1127 | } | |
1128 | ||
1129 | sdata = IEEE80211_DEV_TO_SUB_IF(mdev); | |
1130 | mdev->ieee80211_ptr = &sdata->wdev; | |
1131 | sdata->wdev.wiphy = wiphy; | |
1132 | ||
1133 | local->hw.queues = 1; /* default */ | |
1134 | ||
1135 | local->mdev = mdev; | |
1136 | local->rx_pre_handlers = ieee80211_rx_pre_handlers; | |
1137 | local->rx_handlers = ieee80211_rx_handlers; | |
1138 | local->tx_handlers = ieee80211_tx_handlers; | |
1139 | ||
1140 | local->bridge_packets = 1; | |
1141 | ||
1142 | local->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD; | |
1143 | local->fragmentation_threshold = IEEE80211_MAX_FRAG_THRESHOLD; | |
1144 | local->short_retry_limit = 7; | |
1145 | local->long_retry_limit = 4; | |
1146 | local->hw.conf.radio_enabled = 1; | |
f0706e82 | 1147 | |
b708e610 | 1148 | local->enabled_modes = ~0; |
f0706e82 JB |
1149 | |
1150 | INIT_LIST_HEAD(&local->modes_list); | |
1151 | ||
79010420 | 1152 | INIT_LIST_HEAD(&local->interfaces); |
f0706e82 JB |
1153 | |
1154 | INIT_DELAYED_WORK(&local->scan_work, ieee80211_sta_scan_work); | |
f0706e82 JB |
1155 | ieee80211_rx_bss_list_init(mdev); |
1156 | ||
1157 | sta_info_init(local); | |
1158 | ||
1159 | mdev->hard_start_xmit = ieee80211_master_start_xmit; | |
1160 | mdev->open = ieee80211_master_open; | |
1161 | mdev->stop = ieee80211_master_stop; | |
1162 | mdev->type = ARPHRD_IEEE80211; | |
3b04ddde | 1163 | mdev->header_ops = &ieee80211_header_ops; |
4150c572 | 1164 | mdev->set_multicast_list = ieee80211_master_set_multicast_list; |
f0706e82 JB |
1165 | |
1166 | sdata->type = IEEE80211_IF_TYPE_AP; | |
1167 | sdata->dev = mdev; | |
1168 | sdata->local = local; | |
1169 | sdata->u.ap.force_unicast_rateidx = -1; | |
1170 | sdata->u.ap.max_ratectrl_rateidx = -1; | |
1171 | ieee80211_if_sdata_init(sdata); | |
79010420 JB |
1172 | /* no RCU needed since we're still during init phase */ |
1173 | list_add_tail(&sdata->list, &local->interfaces); | |
f0706e82 JB |
1174 | |
1175 | tasklet_init(&local->tx_pending_tasklet, ieee80211_tx_pending, | |
1176 | (unsigned long)local); | |
1177 | tasklet_disable(&local->tx_pending_tasklet); | |
1178 | ||
1179 | tasklet_init(&local->tasklet, | |
1180 | ieee80211_tasklet_handler, | |
1181 | (unsigned long) local); | |
1182 | tasklet_disable(&local->tasklet); | |
1183 | ||
1184 | skb_queue_head_init(&local->skb_queue); | |
1185 | skb_queue_head_init(&local->skb_queue_unreliable); | |
1186 | ||
1187 | return local_to_hw(local); | |
1188 | } | |
1189 | EXPORT_SYMBOL(ieee80211_alloc_hw); | |
1190 | ||
1191 | int ieee80211_register_hw(struct ieee80211_hw *hw) | |
1192 | { | |
1193 | struct ieee80211_local *local = hw_to_local(hw); | |
1194 | const char *name; | |
1195 | int result; | |
1196 | ||
1197 | result = wiphy_register(local->hw.wiphy); | |
1198 | if (result < 0) | |
1199 | return result; | |
1200 | ||
1201 | name = wiphy_dev(local->hw.wiphy)->driver->name; | |
1202 | local->hw.workqueue = create_singlethread_workqueue(name); | |
1203 | if (!local->hw.workqueue) { | |
1204 | result = -ENOMEM; | |
1205 | goto fail_workqueue; | |
1206 | } | |
1207 | ||
b306f453 JB |
1208 | /* |
1209 | * The hardware needs headroom for sending the frame, | |
1210 | * and we need some headroom for passing the frame to monitor | |
1211 | * interfaces, but never both at the same time. | |
1212 | */ | |
33ccad35 JB |
1213 | local->tx_headroom = max_t(unsigned int , local->hw.extra_tx_headroom, |
1214 | sizeof(struct ieee80211_tx_status_rtap_hdr)); | |
b306f453 | 1215 | |
e9f207f0 JB |
1216 | debugfs_hw_add(local); |
1217 | ||
f0706e82 JB |
1218 | local->hw.conf.beacon_int = 1000; |
1219 | ||
1220 | local->wstats_flags |= local->hw.max_rssi ? | |
1221 | IW_QUAL_LEVEL_UPDATED : IW_QUAL_LEVEL_INVALID; | |
1222 | local->wstats_flags |= local->hw.max_signal ? | |
1223 | IW_QUAL_QUAL_UPDATED : IW_QUAL_QUAL_INVALID; | |
1224 | local->wstats_flags |= local->hw.max_noise ? | |
1225 | IW_QUAL_NOISE_UPDATED : IW_QUAL_NOISE_INVALID; | |
1226 | if (local->hw.max_rssi < 0 || local->hw.max_noise < 0) | |
1227 | local->wstats_flags |= IW_QUAL_DBM; | |
1228 | ||
1229 | result = sta_info_start(local); | |
1230 | if (result < 0) | |
1231 | goto fail_sta_info; | |
1232 | ||
1233 | rtnl_lock(); | |
1234 | result = dev_alloc_name(local->mdev, local->mdev->name); | |
1235 | if (result < 0) | |
1236 | goto fail_dev; | |
1237 | ||
1238 | memcpy(local->mdev->dev_addr, local->hw.wiphy->perm_addr, ETH_ALEN); | |
1239 | SET_NETDEV_DEV(local->mdev, wiphy_dev(local->hw.wiphy)); | |
1240 | ||
1241 | result = register_netdevice(local->mdev); | |
1242 | if (result < 0) | |
1243 | goto fail_dev; | |
1244 | ||
e9f207f0 | 1245 | ieee80211_debugfs_add_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
5b2812e9 | 1246 | ieee80211_if_set_type(local->mdev, IEEE80211_IF_TYPE_AP); |
e9f207f0 | 1247 | |
f0706e82 JB |
1248 | result = ieee80211_init_rate_ctrl_alg(local, NULL); |
1249 | if (result < 0) { | |
1250 | printk(KERN_DEBUG "%s: Failed to initialize rate control " | |
dd1cd4c6 | 1251 | "algorithm\n", wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1252 | goto fail_rate; |
1253 | } | |
1254 | ||
1255 | result = ieee80211_wep_init(local); | |
1256 | ||
1257 | if (result < 0) { | |
1258 | printk(KERN_DEBUG "%s: Failed to initialize wep\n", | |
dd1cd4c6 | 1259 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1260 | goto fail_wep; |
1261 | } | |
1262 | ||
1263 | ieee80211_install_qdisc(local->mdev); | |
1264 | ||
1265 | /* add one default STA interface */ | |
1266 | result = ieee80211_if_add(local->mdev, "wlan%d", NULL, | |
1267 | IEEE80211_IF_TYPE_STA); | |
1268 | if (result) | |
1269 | printk(KERN_WARNING "%s: Failed to add default virtual iface\n", | |
dd1cd4c6 | 1270 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1271 | |
1272 | local->reg_state = IEEE80211_DEV_REGISTERED; | |
1273 | rtnl_unlock(); | |
1274 | ||
1275 | ieee80211_led_init(local); | |
1276 | ||
1277 | return 0; | |
1278 | ||
1279 | fail_wep: | |
1280 | rate_control_deinitialize(local); | |
1281 | fail_rate: | |
e9f207f0 | 1282 | ieee80211_debugfs_remove_netdev(IEEE80211_DEV_TO_SUB_IF(local->mdev)); |
f0706e82 JB |
1283 | unregister_netdevice(local->mdev); |
1284 | fail_dev: | |
1285 | rtnl_unlock(); | |
1286 | sta_info_stop(local); | |
1287 | fail_sta_info: | |
e9f207f0 | 1288 | debugfs_hw_del(local); |
f0706e82 JB |
1289 | destroy_workqueue(local->hw.workqueue); |
1290 | fail_workqueue: | |
1291 | wiphy_unregister(local->hw.wiphy); | |
1292 | return result; | |
1293 | } | |
1294 | EXPORT_SYMBOL(ieee80211_register_hw); | |
1295 | ||
1296 | int ieee80211_register_hwmode(struct ieee80211_hw *hw, | |
1297 | struct ieee80211_hw_mode *mode) | |
1298 | { | |
1299 | struct ieee80211_local *local = hw_to_local(hw); | |
1300 | struct ieee80211_rate *rate; | |
1301 | int i; | |
1302 | ||
1303 | INIT_LIST_HEAD(&mode->list); | |
1304 | list_add_tail(&mode->list, &local->modes_list); | |
1305 | ||
1306 | local->hw_modes |= (1 << mode->mode); | |
1307 | for (i = 0; i < mode->num_rates; i++) { | |
1308 | rate = &(mode->rates[i]); | |
1309 | rate->rate_inv = CHAN_UTIL_RATE_LCM / rate->rate; | |
1310 | } | |
1311 | ieee80211_prepare_rates(local, mode); | |
1312 | ||
1313 | if (!local->oper_hw_mode) { | |
1314 | /* Default to this mode */ | |
1315 | local->hw.conf.phymode = mode->mode; | |
1316 | local->oper_hw_mode = local->scan_hw_mode = mode; | |
1317 | local->oper_channel = local->scan_channel = &mode->channels[0]; | |
1318 | local->hw.conf.mode = local->oper_hw_mode; | |
1319 | local->hw.conf.chan = local->oper_channel; | |
1320 | } | |
1321 | ||
1322 | if (!(hw->flags & IEEE80211_HW_DEFAULT_REG_DOMAIN_CONFIGURED)) | |
fd8bacc9 | 1323 | ieee80211_set_default_regdomain(mode); |
f0706e82 JB |
1324 | |
1325 | return 0; | |
1326 | } | |
1327 | EXPORT_SYMBOL(ieee80211_register_hwmode); | |
1328 | ||
1329 | void ieee80211_unregister_hw(struct ieee80211_hw *hw) | |
1330 | { | |
1331 | struct ieee80211_local *local = hw_to_local(hw); | |
1332 | struct ieee80211_sub_if_data *sdata, *tmp; | |
f0706e82 JB |
1333 | int i; |
1334 | ||
1335 | tasklet_kill(&local->tx_pending_tasklet); | |
1336 | tasklet_kill(&local->tasklet); | |
1337 | ||
1338 | rtnl_lock(); | |
1339 | ||
1340 | BUG_ON(local->reg_state != IEEE80211_DEV_REGISTERED); | |
1341 | ||
1342 | local->reg_state = IEEE80211_DEV_UNREGISTERED; | |
1343 | if (local->apdev) | |
1344 | ieee80211_if_del_mgmt(local); | |
1345 | ||
79010420 JB |
1346 | /* |
1347 | * At this point, interface list manipulations are fine | |
1348 | * because the driver cannot be handing us frames any | |
1349 | * more and the tasklet is killed. | |
1350 | */ | |
5b2812e9 JB |
1351 | |
1352 | /* | |
1353 | * First, we remove all non-master interfaces. Do this because they | |
1354 | * may have bss pointer dependency on the master, and when we free | |
1355 | * the master these would be freed as well, breaking our list | |
1356 | * iteration completely. | |
1357 | */ | |
1358 | list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { | |
1359 | if (sdata->dev == local->mdev) | |
1360 | continue; | |
1361 | list_del(&sdata->list); | |
f0706e82 | 1362 | __ieee80211_if_del(local, sdata); |
5b2812e9 JB |
1363 | } |
1364 | ||
1365 | /* then, finally, remove the master interface */ | |
1366 | __ieee80211_if_del(local, IEEE80211_DEV_TO_SUB_IF(local->mdev)); | |
f0706e82 JB |
1367 | |
1368 | rtnl_unlock(); | |
1369 | ||
f0706e82 JB |
1370 | ieee80211_rx_bss_list_deinit(local->mdev); |
1371 | ieee80211_clear_tx_pending(local); | |
1372 | sta_info_stop(local); | |
1373 | rate_control_deinitialize(local); | |
e9f207f0 | 1374 | debugfs_hw_del(local); |
f0706e82 JB |
1375 | |
1376 | for (i = 0; i < NUM_IEEE80211_MODES; i++) { | |
1377 | kfree(local->supp_rates[i]); | |
1378 | kfree(local->basic_rates[i]); | |
1379 | } | |
1380 | ||
1381 | if (skb_queue_len(&local->skb_queue) | |
1382 | || skb_queue_len(&local->skb_queue_unreliable)) | |
1383 | printk(KERN_WARNING "%s: skb_queue not empty\n", | |
dd1cd4c6 | 1384 | wiphy_name(local->hw.wiphy)); |
f0706e82 JB |
1385 | skb_queue_purge(&local->skb_queue); |
1386 | skb_queue_purge(&local->skb_queue_unreliable); | |
1387 | ||
1388 | destroy_workqueue(local->hw.workqueue); | |
1389 | wiphy_unregister(local->hw.wiphy); | |
1390 | ieee80211_wep_free(local); | |
1391 | ieee80211_led_exit(local); | |
1392 | } | |
1393 | EXPORT_SYMBOL(ieee80211_unregister_hw); | |
1394 | ||
1395 | void ieee80211_free_hw(struct ieee80211_hw *hw) | |
1396 | { | |
1397 | struct ieee80211_local *local = hw_to_local(hw); | |
1398 | ||
1399 | ieee80211_if_free(local->mdev); | |
1400 | wiphy_free(local->hw.wiphy); | |
1401 | } | |
1402 | EXPORT_SYMBOL(ieee80211_free_hw); | |
1403 | ||
f0706e82 JB |
1404 | static int __init ieee80211_init(void) |
1405 | { | |
1406 | struct sk_buff *skb; | |
1407 | int ret; | |
1408 | ||
1409 | BUILD_BUG_ON(sizeof(struct ieee80211_tx_packet_data) > sizeof(skb->cb)); | |
1410 | ||
1411 | ret = ieee80211_wme_register(); | |
1412 | if (ret) { | |
1413 | printk(KERN_DEBUG "ieee80211_init: failed to " | |
1414 | "initialize WME (err=%d)\n", ret); | |
1415 | return ret; | |
1416 | } | |
1417 | ||
e9f207f0 | 1418 | ieee80211_debugfs_netdev_init(); |
fd8bacc9 | 1419 | ieee80211_regdomain_init(); |
e9f207f0 | 1420 | |
f0706e82 JB |
1421 | return 0; |
1422 | } | |
1423 | ||
f0706e82 JB |
1424 | static void __exit ieee80211_exit(void) |
1425 | { | |
1426 | ieee80211_wme_unregister(); | |
e9f207f0 | 1427 | ieee80211_debugfs_netdev_exit(); |
f0706e82 JB |
1428 | } |
1429 | ||
1430 | ||
ca9938fe | 1431 | subsys_initcall(ieee80211_init); |
f0706e82 JB |
1432 | module_exit(ieee80211_exit); |
1433 | ||
1434 | MODULE_DESCRIPTION("IEEE 802.11 subsystem"); | |
1435 | MODULE_LICENSE("GPL"); |