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Commit | Line | Data |
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acc1e7a3 JM |
1 | /* |
2 | * mac80211_hwsim - software simulator of 802.11 radio(s) for mac80211 | |
3 | * Copyright (c) 2008, Jouni Malinen <j@w1.fi> | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | */ | |
9 | ||
10 | /* | |
11 | * TODO: | |
12 | * - IBSS mode simulation (Beacon transmission with competition for "air time") | |
acc1e7a3 JM |
13 | * - RX filtering based on filter configuration (data->rx_filter) |
14 | */ | |
15 | ||
0e057d73 JB |
16 | #include <linux/list.h> |
17 | #include <linux/spinlock.h> | |
acc1e7a3 JM |
18 | #include <net/mac80211.h> |
19 | #include <net/ieee80211_radiotap.h> | |
20 | #include <linux/if_arp.h> | |
21 | #include <linux/rtnetlink.h> | |
22 | #include <linux/etherdevice.h> | |
fc6971d4 | 23 | #include <linux/debugfs.h> |
acc1e7a3 JM |
24 | |
25 | MODULE_AUTHOR("Jouni Malinen"); | |
26 | MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211"); | |
27 | MODULE_LICENSE("GPL"); | |
28 | ||
29 | static int radios = 2; | |
30 | module_param(radios, int, 0444); | |
31 | MODULE_PARM_DESC(radios, "Number of simulated radios"); | |
32 | ||
8aa21e6f JB |
33 | struct hwsim_vif_priv { |
34 | u32 magic; | |
fc6971d4 JM |
35 | u8 bssid[ETH_ALEN]; |
36 | bool assoc; | |
37 | u16 aid; | |
8aa21e6f JB |
38 | }; |
39 | ||
40 | #define HWSIM_VIF_MAGIC 0x69537748 | |
41 | ||
42 | static inline void hwsim_check_magic(struct ieee80211_vif *vif) | |
43 | { | |
44 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; | |
45 | WARN_ON(vp->magic != HWSIM_VIF_MAGIC); | |
46 | } | |
47 | ||
48 | static inline void hwsim_set_magic(struct ieee80211_vif *vif) | |
49 | { | |
50 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; | |
51 | vp->magic = HWSIM_VIF_MAGIC; | |
52 | } | |
53 | ||
54 | static inline void hwsim_clear_magic(struct ieee80211_vif *vif) | |
55 | { | |
56 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; | |
57 | vp->magic = 0; | |
58 | } | |
acc1e7a3 | 59 | |
81c06523 JB |
60 | struct hwsim_sta_priv { |
61 | u32 magic; | |
62 | }; | |
63 | ||
64 | #define HWSIM_STA_MAGIC 0x6d537748 | |
65 | ||
66 | static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta) | |
67 | { | |
68 | struct hwsim_sta_priv *sp = (void *)sta->drv_priv; | |
5d6924ea | 69 | WARN_ON(sp->magic != HWSIM_STA_MAGIC); |
81c06523 JB |
70 | } |
71 | ||
72 | static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta) | |
73 | { | |
74 | struct hwsim_sta_priv *sp = (void *)sta->drv_priv; | |
5d6924ea | 75 | sp->magic = HWSIM_STA_MAGIC; |
81c06523 JB |
76 | } |
77 | ||
78 | static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta) | |
79 | { | |
80 | struct hwsim_sta_priv *sp = (void *)sta->drv_priv; | |
81 | sp->magic = 0; | |
82 | } | |
83 | ||
acc1e7a3 JM |
84 | static struct class *hwsim_class; |
85 | ||
acc1e7a3 JM |
86 | static struct net_device *hwsim_mon; /* global monitor netdev */ |
87 | ||
22cad735 LR |
88 | #define CHAN2G(_freq) { \ |
89 | .band = IEEE80211_BAND_2GHZ, \ | |
90 | .center_freq = (_freq), \ | |
91 | .hw_value = (_freq), \ | |
92 | .max_power = 20, \ | |
93 | } | |
94 | ||
95 | #define CHAN5G(_freq) { \ | |
96 | .band = IEEE80211_BAND_5GHZ, \ | |
97 | .center_freq = (_freq), \ | |
98 | .hw_value = (_freq), \ | |
99 | .max_power = 20, \ | |
100 | } | |
101 | ||
102 | static const struct ieee80211_channel hwsim_channels_2ghz[] = { | |
103 | CHAN2G(2412), /* Channel 1 */ | |
104 | CHAN2G(2417), /* Channel 2 */ | |
105 | CHAN2G(2422), /* Channel 3 */ | |
106 | CHAN2G(2427), /* Channel 4 */ | |
107 | CHAN2G(2432), /* Channel 5 */ | |
108 | CHAN2G(2437), /* Channel 6 */ | |
109 | CHAN2G(2442), /* Channel 7 */ | |
110 | CHAN2G(2447), /* Channel 8 */ | |
111 | CHAN2G(2452), /* Channel 9 */ | |
112 | CHAN2G(2457), /* Channel 10 */ | |
113 | CHAN2G(2462), /* Channel 11 */ | |
114 | CHAN2G(2467), /* Channel 12 */ | |
115 | CHAN2G(2472), /* Channel 13 */ | |
116 | CHAN2G(2484), /* Channel 14 */ | |
117 | }; | |
acc1e7a3 | 118 | |
22cad735 LR |
119 | static const struct ieee80211_channel hwsim_channels_5ghz[] = { |
120 | CHAN5G(5180), /* Channel 36 */ | |
121 | CHAN5G(5200), /* Channel 40 */ | |
122 | CHAN5G(5220), /* Channel 44 */ | |
123 | CHAN5G(5240), /* Channel 48 */ | |
124 | ||
125 | CHAN5G(5260), /* Channel 52 */ | |
126 | CHAN5G(5280), /* Channel 56 */ | |
127 | CHAN5G(5300), /* Channel 60 */ | |
128 | CHAN5G(5320), /* Channel 64 */ | |
129 | ||
130 | CHAN5G(5500), /* Channel 100 */ | |
131 | CHAN5G(5520), /* Channel 104 */ | |
132 | CHAN5G(5540), /* Channel 108 */ | |
133 | CHAN5G(5560), /* Channel 112 */ | |
134 | CHAN5G(5580), /* Channel 116 */ | |
135 | CHAN5G(5600), /* Channel 120 */ | |
136 | CHAN5G(5620), /* Channel 124 */ | |
137 | CHAN5G(5640), /* Channel 128 */ | |
138 | CHAN5G(5660), /* Channel 132 */ | |
139 | CHAN5G(5680), /* Channel 136 */ | |
140 | CHAN5G(5700), /* Channel 140 */ | |
141 | ||
142 | CHAN5G(5745), /* Channel 149 */ | |
143 | CHAN5G(5765), /* Channel 153 */ | |
144 | CHAN5G(5785), /* Channel 157 */ | |
145 | CHAN5G(5805), /* Channel 161 */ | |
146 | CHAN5G(5825), /* Channel 165 */ | |
acc1e7a3 JM |
147 | }; |
148 | ||
149 | static const struct ieee80211_rate hwsim_rates[] = { | |
150 | { .bitrate = 10 }, | |
151 | { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
152 | { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
153 | { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
154 | { .bitrate = 60 }, | |
155 | { .bitrate = 90 }, | |
156 | { .bitrate = 120 }, | |
157 | { .bitrate = 180 }, | |
158 | { .bitrate = 240 }, | |
159 | { .bitrate = 360 }, | |
160 | { .bitrate = 480 }, | |
161 | { .bitrate = 540 } | |
162 | }; | |
163 | ||
0e057d73 JB |
164 | static spinlock_t hwsim_radio_lock; |
165 | static struct list_head hwsim_radios; | |
166 | ||
acc1e7a3 | 167 | struct mac80211_hwsim_data { |
0e057d73 JB |
168 | struct list_head list; |
169 | struct ieee80211_hw *hw; | |
acc1e7a3 | 170 | struct device *dev; |
22cad735 LR |
171 | struct ieee80211_supported_band bands[2]; |
172 | struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)]; | |
173 | struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)]; | |
acc1e7a3 JM |
174 | struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)]; |
175 | ||
176 | struct ieee80211_channel *channel; | |
177 | int radio_enabled; | |
178 | unsigned long beacon_int; /* in jiffies unit */ | |
179 | unsigned int rx_filter; | |
180 | int started; | |
181 | struct timer_list beacon_timer; | |
fc6971d4 JM |
182 | enum ps_mode { |
183 | PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL | |
184 | } ps; | |
185 | bool ps_poll_pending; | |
186 | struct dentry *debugfs; | |
187 | struct dentry *debugfs_ps; | |
acc1e7a3 JM |
188 | }; |
189 | ||
190 | ||
191 | struct hwsim_radiotap_hdr { | |
192 | struct ieee80211_radiotap_header hdr; | |
193 | u8 rt_flags; | |
194 | u8 rt_rate; | |
195 | __le16 rt_channel; | |
196 | __le16 rt_chbitmask; | |
197 | } __attribute__ ((packed)); | |
198 | ||
199 | ||
200 | static int hwsim_mon_xmit(struct sk_buff *skb, struct net_device *dev) | |
201 | { | |
202 | /* TODO: allow packet injection */ | |
203 | dev_kfree_skb(skb); | |
204 | return 0; | |
205 | } | |
206 | ||
207 | ||
208 | static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw, | |
209 | struct sk_buff *tx_skb) | |
210 | { | |
211 | struct mac80211_hwsim_data *data = hw->priv; | |
212 | struct sk_buff *skb; | |
213 | struct hwsim_radiotap_hdr *hdr; | |
214 | u16 flags; | |
215 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb); | |
216 | struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info); | |
217 | ||
218 | if (!netif_running(hwsim_mon)) | |
219 | return; | |
220 | ||
221 | skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC); | |
222 | if (skb == NULL) | |
223 | return; | |
224 | ||
225 | hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr)); | |
226 | hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION; | |
227 | hdr->hdr.it_pad = 0; | |
228 | hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr)); | |
f248f105 JM |
229 | hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) | |
230 | (1 << IEEE80211_RADIOTAP_RATE) | | |
231 | (1 << IEEE80211_RADIOTAP_CHANNEL)); | |
acc1e7a3 JM |
232 | hdr->rt_flags = 0; |
233 | hdr->rt_rate = txrate->bitrate / 5; | |
df70b4ac | 234 | hdr->rt_channel = cpu_to_le16(data->channel->center_freq); |
acc1e7a3 JM |
235 | flags = IEEE80211_CHAN_2GHZ; |
236 | if (txrate->flags & IEEE80211_RATE_ERP_G) | |
237 | flags |= IEEE80211_CHAN_OFDM; | |
238 | else | |
239 | flags |= IEEE80211_CHAN_CCK; | |
240 | hdr->rt_chbitmask = cpu_to_le16(flags); | |
241 | ||
242 | skb->dev = hwsim_mon; | |
243 | skb_set_mac_header(skb, 0); | |
244 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
245 | skb->pkt_type = PACKET_OTHERHOST; | |
f248f105 | 246 | skb->protocol = htons(ETH_P_802_2); |
acc1e7a3 JM |
247 | memset(skb->cb, 0, sizeof(skb->cb)); |
248 | netif_rx(skb); | |
249 | } | |
250 | ||
251 | ||
fc6971d4 JM |
252 | static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data, |
253 | struct sk_buff *skb) | |
254 | { | |
255 | switch (data->ps) { | |
256 | case PS_DISABLED: | |
257 | return true; | |
258 | case PS_ENABLED: | |
259 | return false; | |
260 | case PS_AUTO_POLL: | |
261 | /* TODO: accept (some) Beacons by default and other frames only | |
262 | * if pending PS-Poll has been sent */ | |
263 | return true; | |
264 | case PS_MANUAL_POLL: | |
265 | /* Allow unicast frames to own address if there is a pending | |
266 | * PS-Poll */ | |
267 | if (data->ps_poll_pending && | |
268 | memcmp(data->hw->wiphy->perm_addr, skb->data + 4, | |
269 | ETH_ALEN) == 0) { | |
270 | data->ps_poll_pending = false; | |
271 | return true; | |
272 | } | |
273 | return false; | |
274 | } | |
275 | ||
276 | return true; | |
277 | } | |
278 | ||
279 | ||
0e057d73 JB |
280 | static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw, |
281 | struct sk_buff *skb) | |
acc1e7a3 | 282 | { |
0e057d73 JB |
283 | struct mac80211_hwsim_data *data = hw->priv, *data2; |
284 | bool ack = false; | |
e36cfdc9 | 285 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
acc1e7a3 | 286 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
e36cfdc9 | 287 | struct ieee80211_rx_status rx_status; |
acc1e7a3 JM |
288 | |
289 | memset(&rx_status, 0, sizeof(rx_status)); | |
290 | /* TODO: set mactime */ | |
291 | rx_status.freq = data->channel->center_freq; | |
292 | rx_status.band = data->channel->band; | |
e6a9854b | 293 | rx_status.rate_idx = info->control.rates[0].idx; |
acc1e7a3 JM |
294 | /* TODO: simulate signal strength (and optional packet drop) */ |
295 | ||
fc6971d4 JM |
296 | if (data->ps != PS_DISABLED) |
297 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
298 | ||
acc1e7a3 | 299 | /* Copy skb to all enabled radios that are on the current frequency */ |
0e057d73 JB |
300 | spin_lock(&hwsim_radio_lock); |
301 | list_for_each_entry(data2, &hwsim_radios, list) { | |
acc1e7a3 JM |
302 | struct sk_buff *nskb; |
303 | ||
0e057d73 | 304 | if (data == data2) |
acc1e7a3 | 305 | continue; |
0e057d73 | 306 | |
acc1e7a3 | 307 | if (!data2->started || !data2->radio_enabled || |
fc6971d4 | 308 | !hwsim_ps_rx_ok(data2, skb) || |
acc1e7a3 JM |
309 | data->channel->center_freq != data2->channel->center_freq) |
310 | continue; | |
311 | ||
312 | nskb = skb_copy(skb, GFP_ATOMIC); | |
313 | if (nskb == NULL) | |
314 | continue; | |
315 | ||
0e057d73 | 316 | if (memcmp(hdr->addr1, data2->hw->wiphy->perm_addr, |
acc1e7a3 | 317 | ETH_ALEN) == 0) |
0e057d73 JB |
318 | ack = true; |
319 | ieee80211_rx_irqsafe(data2->hw, nskb, &rx_status); | |
acc1e7a3 | 320 | } |
0e057d73 | 321 | spin_unlock(&hwsim_radio_lock); |
acc1e7a3 | 322 | |
e36cfdc9 JM |
323 | return ack; |
324 | } | |
325 | ||
326 | ||
327 | static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb) | |
328 | { | |
329 | struct mac80211_hwsim_data *data = hw->priv; | |
0e057d73 | 330 | bool ack; |
e36cfdc9 JM |
331 | struct ieee80211_tx_info *txi; |
332 | ||
333 | mac80211_hwsim_monitor_rx(hw, skb); | |
334 | ||
335 | if (skb->len < 10) { | |
336 | /* Should not happen; just a sanity check for addr1 use */ | |
337 | dev_kfree_skb(skb); | |
338 | return NETDEV_TX_OK; | |
339 | } | |
340 | ||
341 | if (!data->radio_enabled) { | |
342 | printk(KERN_DEBUG "%s: dropped TX frame since radio " | |
343 | "disabled\n", wiphy_name(hw->wiphy)); | |
344 | dev_kfree_skb(skb); | |
345 | return NETDEV_TX_OK; | |
346 | } | |
347 | ||
348 | ack = mac80211_hwsim_tx_frame(hw, skb); | |
349 | ||
acc1e7a3 | 350 | txi = IEEE80211_SKB_CB(skb); |
8aa21e6f | 351 | |
25d834e1 JB |
352 | if (txi->control.vif) |
353 | hwsim_check_magic(txi->control.vif); | |
81c06523 JB |
354 | if (txi->control.sta) |
355 | hwsim_check_sta_magic(txi->control.sta); | |
8aa21e6f | 356 | |
e6a9854b JB |
357 | ieee80211_tx_info_clear_status(txi); |
358 | if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack) | |
359 | txi->flags |= IEEE80211_TX_STAT_ACK; | |
acc1e7a3 JM |
360 | ieee80211_tx_status_irqsafe(hw, skb); |
361 | return NETDEV_TX_OK; | |
362 | } | |
363 | ||
364 | ||
365 | static int mac80211_hwsim_start(struct ieee80211_hw *hw) | |
366 | { | |
367 | struct mac80211_hwsim_data *data = hw->priv; | |
368 | printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__); | |
369 | data->started = 1; | |
370 | return 0; | |
371 | } | |
372 | ||
373 | ||
374 | static void mac80211_hwsim_stop(struct ieee80211_hw *hw) | |
375 | { | |
376 | struct mac80211_hwsim_data *data = hw->priv; | |
377 | data->started = 0; | |
ab1ef980 | 378 | del_timer(&data->beacon_timer); |
acc1e7a3 JM |
379 | printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__); |
380 | } | |
381 | ||
382 | ||
383 | static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw, | |
384 | struct ieee80211_if_init_conf *conf) | |
385 | { | |
e174961c | 386 | printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n", |
acc1e7a3 | 387 | wiphy_name(hw->wiphy), __func__, conf->type, |
e174961c | 388 | conf->mac_addr); |
8aa21e6f | 389 | hwsim_set_magic(conf->vif); |
acc1e7a3 JM |
390 | return 0; |
391 | } | |
392 | ||
393 | ||
394 | static void mac80211_hwsim_remove_interface( | |
395 | struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf) | |
396 | { | |
e174961c | 397 | printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n", |
acc1e7a3 | 398 | wiphy_name(hw->wiphy), __func__, conf->type, |
e174961c | 399 | conf->mac_addr); |
8aa21e6f JB |
400 | hwsim_check_magic(conf->vif); |
401 | hwsim_clear_magic(conf->vif); | |
acc1e7a3 JM |
402 | } |
403 | ||
404 | ||
405 | static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac, | |
406 | struct ieee80211_vif *vif) | |
407 | { | |
408 | struct ieee80211_hw *hw = arg; | |
acc1e7a3 | 409 | struct sk_buff *skb; |
acc1e7a3 JM |
410 | struct ieee80211_tx_info *info; |
411 | ||
8aa21e6f JB |
412 | hwsim_check_magic(vif); |
413 | ||
55b39619 AY |
414 | if (vif->type != NL80211_IFTYPE_AP && |
415 | vif->type != NL80211_IFTYPE_MESH_POINT) | |
acc1e7a3 JM |
416 | return; |
417 | ||
418 | skb = ieee80211_beacon_get(hw, vif); | |
419 | if (skb == NULL) | |
420 | return; | |
421 | info = IEEE80211_SKB_CB(skb); | |
422 | ||
423 | mac80211_hwsim_monitor_rx(hw, skb); | |
e36cfdc9 | 424 | mac80211_hwsim_tx_frame(hw, skb); |
acc1e7a3 JM |
425 | dev_kfree_skb(skb); |
426 | } | |
427 | ||
428 | ||
429 | static void mac80211_hwsim_beacon(unsigned long arg) | |
430 | { | |
431 | struct ieee80211_hw *hw = (struct ieee80211_hw *) arg; | |
432 | struct mac80211_hwsim_data *data = hw->priv; | |
433 | ||
434 | if (!data->started || !data->radio_enabled) | |
435 | return; | |
436 | ||
f248f105 JM |
437 | ieee80211_iterate_active_interfaces_atomic( |
438 | hw, mac80211_hwsim_beacon_tx, hw); | |
acc1e7a3 JM |
439 | |
440 | data->beacon_timer.expires = jiffies + data->beacon_int; | |
441 | add_timer(&data->beacon_timer); | |
442 | } | |
443 | ||
444 | ||
e8975581 | 445 | static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed) |
acc1e7a3 JM |
446 | { |
447 | struct mac80211_hwsim_data *data = hw->priv; | |
e8975581 | 448 | struct ieee80211_conf *conf = &hw->conf; |
acc1e7a3 JM |
449 | |
450 | printk(KERN_DEBUG "%s:%s (freq=%d radio_enabled=%d beacon_int=%d)\n", | |
451 | wiphy_name(hw->wiphy), __func__, | |
452 | conf->channel->center_freq, conf->radio_enabled, | |
453 | conf->beacon_int); | |
454 | ||
455 | data->channel = conf->channel; | |
456 | data->radio_enabled = conf->radio_enabled; | |
457 | data->beacon_int = 1024 * conf->beacon_int / 1000 * HZ / 1000; | |
458 | if (data->beacon_int < 1) | |
459 | data->beacon_int = 1; | |
460 | ||
461 | if (!data->started || !data->radio_enabled) | |
462 | del_timer(&data->beacon_timer); | |
463 | else | |
464 | mod_timer(&data->beacon_timer, jiffies + data->beacon_int); | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
469 | ||
470 | static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw, | |
471 | unsigned int changed_flags, | |
472 | unsigned int *total_flags, | |
473 | int mc_count, | |
474 | struct dev_addr_list *mc_list) | |
475 | { | |
476 | struct mac80211_hwsim_data *data = hw->priv; | |
477 | ||
478 | printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__); | |
479 | ||
480 | data->rx_filter = 0; | |
481 | if (*total_flags & FIF_PROMISC_IN_BSS) | |
482 | data->rx_filter |= FIF_PROMISC_IN_BSS; | |
483 | if (*total_flags & FIF_ALLMULTI) | |
484 | data->rx_filter |= FIF_ALLMULTI; | |
485 | ||
486 | *total_flags = data->rx_filter; | |
487 | } | |
488 | ||
8aa21e6f JB |
489 | static int mac80211_hwsim_config_interface(struct ieee80211_hw *hw, |
490 | struct ieee80211_vif *vif, | |
491 | struct ieee80211_if_conf *conf) | |
492 | { | |
fc6971d4 JM |
493 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; |
494 | ||
8aa21e6f | 495 | hwsim_check_magic(vif); |
fc6971d4 JM |
496 | if (conf->changed & IEEE80211_IFCC_BSSID) { |
497 | DECLARE_MAC_BUF(mac); | |
b235507c | 498 | printk(KERN_DEBUG "%s:%s: BSSID changed: %pM\n", |
fc6971d4 | 499 | wiphy_name(hw->wiphy), __func__, |
b235507c | 500 | conf->bssid); |
fc6971d4 JM |
501 | memcpy(vp->bssid, conf->bssid, ETH_ALEN); |
502 | } | |
8aa21e6f JB |
503 | return 0; |
504 | } | |
acc1e7a3 | 505 | |
8aa21e6f JB |
506 | static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw, |
507 | struct ieee80211_vif *vif, | |
508 | struct ieee80211_bss_conf *info, | |
509 | u32 changed) | |
510 | { | |
fc6971d4 JM |
511 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; |
512 | ||
8aa21e6f | 513 | hwsim_check_magic(vif); |
fe63bfa3 JM |
514 | |
515 | printk(KERN_DEBUG "%s:%s(changed=0x%x)\n", | |
516 | wiphy_name(hw->wiphy), __func__, changed); | |
517 | ||
518 | if (changed & BSS_CHANGED_ASSOC) { | |
519 | printk(KERN_DEBUG " %s: ASSOC: assoc=%d aid=%d\n", | |
520 | wiphy_name(hw->wiphy), info->assoc, info->aid); | |
fc6971d4 JM |
521 | vp->assoc = info->assoc; |
522 | vp->aid = info->aid; | |
fe63bfa3 JM |
523 | } |
524 | ||
525 | if (changed & BSS_CHANGED_ERP_CTS_PROT) { | |
526 | printk(KERN_DEBUG " %s: ERP_CTS_PROT: %d\n", | |
527 | wiphy_name(hw->wiphy), info->use_cts_prot); | |
528 | } | |
529 | ||
530 | if (changed & BSS_CHANGED_ERP_PREAMBLE) { | |
531 | printk(KERN_DEBUG " %s: ERP_PREAMBLE: %d\n", | |
532 | wiphy_name(hw->wiphy), info->use_short_preamble); | |
533 | } | |
534 | ||
535 | if (changed & BSS_CHANGED_ERP_SLOT) { | |
536 | printk(KERN_DEBUG " %s: ERP_SLOT: %d\n", | |
537 | wiphy_name(hw->wiphy), info->use_short_slot); | |
538 | } | |
539 | ||
540 | if (changed & BSS_CHANGED_HT) { | |
094d05dc | 541 | printk(KERN_DEBUG " %s: HT: op_mode=0x%x\n", |
fe63bfa3 | 542 | wiphy_name(hw->wiphy), |
094d05dc | 543 | info->ht.operation_mode); |
fe63bfa3 JM |
544 | } |
545 | ||
546 | if (changed & BSS_CHANGED_BASIC_RATES) { | |
547 | printk(KERN_DEBUG " %s: BASIC_RATES: 0x%llx\n", | |
548 | wiphy_name(hw->wiphy), | |
549 | (unsigned long long) info->basic_rates); | |
550 | } | |
8aa21e6f JB |
551 | } |
552 | ||
553 | static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw, | |
554 | struct ieee80211_vif *vif, | |
17741cdc JB |
555 | enum sta_notify_cmd cmd, |
556 | struct ieee80211_sta *sta) | |
8aa21e6f JB |
557 | { |
558 | hwsim_check_magic(vif); | |
81c06523 JB |
559 | switch (cmd) { |
560 | case STA_NOTIFY_ADD: | |
561 | hwsim_set_sta_magic(sta); | |
562 | break; | |
563 | case STA_NOTIFY_REMOVE: | |
564 | hwsim_clear_sta_magic(sta); | |
565 | break; | |
89fad578 CL |
566 | case STA_NOTIFY_SLEEP: |
567 | case STA_NOTIFY_AWAKE: | |
568 | /* TODO: make good use of these flags */ | |
569 | break; | |
81c06523 JB |
570 | } |
571 | } | |
572 | ||
573 | static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw, | |
574 | struct ieee80211_sta *sta, | |
575 | bool set) | |
576 | { | |
577 | hwsim_check_sta_magic(sta); | |
578 | return 0; | |
8aa21e6f | 579 | } |
acc1e7a3 | 580 | |
1e898ff8 JM |
581 | static int mac80211_hwsim_conf_tx( |
582 | struct ieee80211_hw *hw, u16 queue, | |
583 | const struct ieee80211_tx_queue_params *params) | |
584 | { | |
585 | printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d " | |
586 | "aifs=%d)\n", | |
587 | wiphy_name(hw->wiphy), __func__, queue, | |
588 | params->txop, params->cw_min, params->cw_max, params->aifs); | |
589 | return 0; | |
590 | } | |
591 | ||
acc1e7a3 JM |
592 | static const struct ieee80211_ops mac80211_hwsim_ops = |
593 | { | |
594 | .tx = mac80211_hwsim_tx, | |
595 | .start = mac80211_hwsim_start, | |
596 | .stop = mac80211_hwsim_stop, | |
597 | .add_interface = mac80211_hwsim_add_interface, | |
598 | .remove_interface = mac80211_hwsim_remove_interface, | |
599 | .config = mac80211_hwsim_config, | |
600 | .configure_filter = mac80211_hwsim_configure_filter, | |
8aa21e6f JB |
601 | .config_interface = mac80211_hwsim_config_interface, |
602 | .bss_info_changed = mac80211_hwsim_bss_info_changed, | |
603 | .sta_notify = mac80211_hwsim_sta_notify, | |
81c06523 | 604 | .set_tim = mac80211_hwsim_set_tim, |
1e898ff8 | 605 | .conf_tx = mac80211_hwsim_conf_tx, |
acc1e7a3 JM |
606 | }; |
607 | ||
608 | ||
609 | static void mac80211_hwsim_free(void) | |
610 | { | |
0e057d73 JB |
611 | struct list_head tmplist, *i, *tmp; |
612 | struct mac80211_hwsim_data *data; | |
613 | ||
614 | INIT_LIST_HEAD(&tmplist); | |
615 | ||
616 | spin_lock_bh(&hwsim_radio_lock); | |
617 | list_for_each_safe(i, tmp, &hwsim_radios) | |
618 | list_move(i, &tmplist); | |
619 | spin_unlock_bh(&hwsim_radio_lock); | |
620 | ||
621 | list_for_each_entry(data, &tmplist, list) { | |
fc6971d4 JM |
622 | debugfs_remove(data->debugfs_ps); |
623 | debugfs_remove(data->debugfs); | |
0e057d73 JB |
624 | ieee80211_unregister_hw(data->hw); |
625 | device_unregister(data->dev); | |
626 | ieee80211_free_hw(data->hw); | |
acc1e7a3 | 627 | } |
acc1e7a3 JM |
628 | class_destroy(hwsim_class); |
629 | } | |
630 | ||
631 | ||
632 | static struct device_driver mac80211_hwsim_driver = { | |
633 | .name = "mac80211_hwsim" | |
634 | }; | |
635 | ||
636 | ||
637 | static void hwsim_mon_setup(struct net_device *dev) | |
638 | { | |
639 | dev->hard_start_xmit = hwsim_mon_xmit; | |
640 | dev->destructor = free_netdev; | |
641 | ether_setup(dev); | |
642 | dev->tx_queue_len = 0; | |
643 | dev->type = ARPHRD_IEEE80211_RADIOTAP; | |
644 | memset(dev->dev_addr, 0, ETH_ALEN); | |
645 | dev->dev_addr[0] = 0x12; | |
646 | } | |
647 | ||
648 | ||
fc6971d4 JM |
649 | static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif) |
650 | { | |
651 | struct mac80211_hwsim_data *data = dat; | |
652 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; | |
653 | DECLARE_MAC_BUF(buf); | |
654 | struct sk_buff *skb; | |
655 | struct ieee80211_pspoll *pspoll; | |
656 | ||
657 | if (!vp->assoc) | |
658 | return; | |
659 | ||
b235507c JL |
660 | printk(KERN_DEBUG "%s:%s: send PS-Poll to %pM for aid %d\n", |
661 | wiphy_name(data->hw->wiphy), __func__, vp->bssid, vp->aid); | |
fc6971d4 JM |
662 | |
663 | skb = dev_alloc_skb(sizeof(*pspoll)); | |
664 | if (!skb) | |
665 | return; | |
666 | pspoll = (void *) skb_put(skb, sizeof(*pspoll)); | |
667 | pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL | | |
668 | IEEE80211_STYPE_PSPOLL | | |
669 | IEEE80211_FCTL_PM); | |
670 | pspoll->aid = cpu_to_le16(0xc000 | vp->aid); | |
671 | memcpy(pspoll->bssid, vp->bssid, ETH_ALEN); | |
672 | memcpy(pspoll->ta, mac, ETH_ALEN); | |
673 | if (data->radio_enabled && | |
674 | !mac80211_hwsim_tx_frame(data->hw, skb)) | |
675 | printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__); | |
676 | dev_kfree_skb(skb); | |
677 | } | |
678 | ||
679 | ||
680 | static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac, | |
681 | struct ieee80211_vif *vif, int ps) | |
682 | { | |
683 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; | |
684 | DECLARE_MAC_BUF(buf); | |
685 | struct sk_buff *skb; | |
686 | struct ieee80211_hdr *hdr; | |
687 | ||
688 | if (!vp->assoc) | |
689 | return; | |
690 | ||
b235507c JL |
691 | printk(KERN_DEBUG "%s:%s: send data::nullfunc to %pM ps=%d\n", |
692 | wiphy_name(data->hw->wiphy), __func__, vp->bssid, ps); | |
fc6971d4 JM |
693 | |
694 | skb = dev_alloc_skb(sizeof(*hdr)); | |
695 | if (!skb) | |
696 | return; | |
697 | hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN); | |
698 | hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
699 | IEEE80211_STYPE_NULLFUNC | | |
700 | (ps ? IEEE80211_FCTL_PM : 0)); | |
701 | hdr->duration_id = cpu_to_le16(0); | |
702 | memcpy(hdr->addr1, vp->bssid, ETH_ALEN); | |
703 | memcpy(hdr->addr2, mac, ETH_ALEN); | |
704 | memcpy(hdr->addr3, vp->bssid, ETH_ALEN); | |
705 | if (data->radio_enabled && | |
706 | !mac80211_hwsim_tx_frame(data->hw, skb)) | |
707 | printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__); | |
708 | dev_kfree_skb(skb); | |
709 | } | |
710 | ||
711 | ||
712 | static void hwsim_send_nullfunc_ps(void *dat, u8 *mac, | |
713 | struct ieee80211_vif *vif) | |
714 | { | |
715 | struct mac80211_hwsim_data *data = dat; | |
716 | hwsim_send_nullfunc(data, mac, vif, 1); | |
717 | } | |
718 | ||
719 | ||
720 | static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac, | |
721 | struct ieee80211_vif *vif) | |
722 | { | |
723 | struct mac80211_hwsim_data *data = dat; | |
724 | hwsim_send_nullfunc(data, mac, vif, 0); | |
725 | } | |
726 | ||
727 | ||
728 | static int hwsim_fops_ps_read(void *dat, u64 *val) | |
729 | { | |
730 | struct mac80211_hwsim_data *data = dat; | |
731 | *val = data->ps; | |
732 | return 0; | |
733 | } | |
734 | ||
735 | static int hwsim_fops_ps_write(void *dat, u64 val) | |
736 | { | |
737 | struct mac80211_hwsim_data *data = dat; | |
738 | enum ps_mode old_ps; | |
739 | ||
740 | if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL && | |
741 | val != PS_MANUAL_POLL) | |
742 | return -EINVAL; | |
743 | ||
744 | old_ps = data->ps; | |
745 | data->ps = val; | |
746 | ||
747 | if (val == PS_MANUAL_POLL) { | |
748 | ieee80211_iterate_active_interfaces(data->hw, | |
749 | hwsim_send_ps_poll, data); | |
750 | data->ps_poll_pending = true; | |
751 | } else if (old_ps == PS_DISABLED && val != PS_DISABLED) { | |
752 | ieee80211_iterate_active_interfaces(data->hw, | |
753 | hwsim_send_nullfunc_ps, | |
754 | data); | |
755 | } else if (old_ps != PS_DISABLED && val == PS_DISABLED) { | |
756 | ieee80211_iterate_active_interfaces(data->hw, | |
757 | hwsim_send_nullfunc_no_ps, | |
758 | data); | |
759 | } | |
760 | ||
761 | return 0; | |
762 | } | |
763 | ||
764 | DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write, | |
765 | "%llu\n"); | |
766 | ||
767 | ||
acc1e7a3 JM |
768 | static int __init init_mac80211_hwsim(void) |
769 | { | |
770 | int i, err = 0; | |
771 | u8 addr[ETH_ALEN]; | |
772 | struct mac80211_hwsim_data *data; | |
773 | struct ieee80211_hw *hw; | |
22cad735 | 774 | enum ieee80211_band band; |
acc1e7a3 | 775 | |
0e057d73 | 776 | if (radios < 1 || radios > 100) |
acc1e7a3 JM |
777 | return -EINVAL; |
778 | ||
0e057d73 JB |
779 | spin_lock_init(&hwsim_radio_lock); |
780 | INIT_LIST_HEAD(&hwsim_radios); | |
acc1e7a3 JM |
781 | |
782 | hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim"); | |
0e057d73 | 783 | if (IS_ERR(hwsim_class)) |
acc1e7a3 | 784 | return PTR_ERR(hwsim_class); |
acc1e7a3 JM |
785 | |
786 | memset(addr, 0, ETH_ALEN); | |
787 | addr[0] = 0x02; | |
788 | ||
0e057d73 | 789 | for (i = 0; i < radios; i++) { |
acc1e7a3 JM |
790 | printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n", |
791 | i); | |
792 | hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops); | |
0e057d73 | 793 | if (!hw) { |
acc1e7a3 JM |
794 | printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw " |
795 | "failed\n"); | |
796 | err = -ENOMEM; | |
797 | goto failed; | |
798 | } | |
acc1e7a3 | 799 | data = hw->priv; |
0e057d73 JB |
800 | data->hw = hw; |
801 | ||
6e05d6c4 GKH |
802 | data->dev = device_create(hwsim_class, NULL, 0, hw, |
803 | "hwsim%d", i); | |
acc1e7a3 | 804 | if (IS_ERR(data->dev)) { |
e800f17c | 805 | printk(KERN_DEBUG |
6e05d6c4 | 806 | "mac80211_hwsim: device_create " |
acc1e7a3 JM |
807 | "failed (%ld)\n", PTR_ERR(data->dev)); |
808 | err = -ENOMEM; | |
3a33cc10 | 809 | goto failed_drvdata; |
acc1e7a3 JM |
810 | } |
811 | data->dev->driver = &mac80211_hwsim_driver; | |
acc1e7a3 JM |
812 | |
813 | SET_IEEE80211_DEV(hw, data->dev); | |
814 | addr[3] = i >> 8; | |
815 | addr[4] = i; | |
816 | SET_IEEE80211_PERM_ADDR(hw, addr); | |
817 | ||
818 | hw->channel_change_time = 1; | |
87e8b64e | 819 | hw->queues = 4; |
f59ac048 LR |
820 | hw->wiphy->interface_modes = |
821 | BIT(NL80211_IFTYPE_STATION) | | |
55b39619 AY |
822 | BIT(NL80211_IFTYPE_AP) | |
823 | BIT(NL80211_IFTYPE_MESH_POINT); | |
87e8b64e | 824 | hw->ampdu_queues = 1; |
acc1e7a3 | 825 | |
fa77533e JM |
826 | hw->flags = IEEE80211_HW_MFP_CAPABLE; |
827 | ||
8aa21e6f JB |
828 | /* ask mac80211 to reserve space for magic */ |
829 | hw->vif_data_size = sizeof(struct hwsim_vif_priv); | |
81c06523 | 830 | hw->sta_data_size = sizeof(struct hwsim_sta_priv); |
8aa21e6f | 831 | |
22cad735 LR |
832 | memcpy(data->channels_2ghz, hwsim_channels_2ghz, |
833 | sizeof(hwsim_channels_2ghz)); | |
834 | memcpy(data->channels_5ghz, hwsim_channels_5ghz, | |
835 | sizeof(hwsim_channels_5ghz)); | |
acc1e7a3 | 836 | memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates)); |
22cad735 LR |
837 | |
838 | for (band = IEEE80211_BAND_2GHZ; band < IEEE80211_NUM_BANDS; band++) { | |
839 | struct ieee80211_supported_band *sband = &data->bands[band]; | |
840 | switch (band) { | |
841 | case IEEE80211_BAND_2GHZ: | |
842 | sband->channels = data->channels_2ghz; | |
843 | sband->n_channels = | |
844 | ARRAY_SIZE(hwsim_channels_2ghz); | |
845 | break; | |
846 | case IEEE80211_BAND_5GHZ: | |
847 | sband->channels = data->channels_5ghz; | |
848 | sband->n_channels = | |
849 | ARRAY_SIZE(hwsim_channels_5ghz); | |
850 | break; | |
851 | default: | |
852 | break; | |
853 | } | |
854 | ||
855 | sband->bitrates = data->rates; | |
856 | sband->n_bitrates = ARRAY_SIZE(hwsim_rates); | |
857 | ||
858 | sband->ht_cap.ht_supported = true; | |
859 | sband->ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
860 | IEEE80211_HT_CAP_GRN_FLD | | |
861 | IEEE80211_HT_CAP_SGI_40 | | |
862 | IEEE80211_HT_CAP_DSSSCCK40; | |
863 | sband->ht_cap.ampdu_factor = 0x3; | |
864 | sband->ht_cap.ampdu_density = 0x6; | |
865 | memset(&sband->ht_cap.mcs, 0, | |
866 | sizeof(sband->ht_cap.mcs)); | |
867 | sband->ht_cap.mcs.rx_mask[0] = 0xff; | |
868 | sband->ht_cap.mcs.rx_mask[1] = 0xff; | |
869 | sband->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; | |
870 | ||
871 | hw->wiphy->bands[band] = sband; | |
872 | } | |
acc1e7a3 JM |
873 | |
874 | err = ieee80211_register_hw(hw); | |
875 | if (err < 0) { | |
876 | printk(KERN_DEBUG "mac80211_hwsim: " | |
877 | "ieee80211_register_hw failed (%d)\n", err); | |
3a33cc10 | 878 | goto failed_hw; |
acc1e7a3 JM |
879 | } |
880 | ||
e174961c | 881 | printk(KERN_DEBUG "%s: hwaddr %pM registered\n", |
acc1e7a3 | 882 | wiphy_name(hw->wiphy), |
e174961c | 883 | hw->wiphy->perm_addr); |
acc1e7a3 | 884 | |
fc6971d4 JM |
885 | data->debugfs = debugfs_create_dir("hwsim", |
886 | hw->wiphy->debugfsdir); | |
887 | data->debugfs_ps = debugfs_create_file("ps", 0666, | |
888 | data->debugfs, data, | |
889 | &hwsim_fops_ps); | |
890 | ||
acc1e7a3 JM |
891 | setup_timer(&data->beacon_timer, mac80211_hwsim_beacon, |
892 | (unsigned long) hw); | |
0e057d73 JB |
893 | |
894 | list_add_tail(&data->list, &hwsim_radios); | |
acc1e7a3 JM |
895 | } |
896 | ||
897 | hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup); | |
898 | if (hwsim_mon == NULL) | |
899 | goto failed; | |
900 | ||
901 | rtnl_lock(); | |
902 | ||
903 | err = dev_alloc_name(hwsim_mon, hwsim_mon->name); | |
3a33cc10 | 904 | if (err < 0) |
acc1e7a3 | 905 | goto failed_mon; |
3a33cc10 | 906 | |
acc1e7a3 JM |
907 | |
908 | err = register_netdevice(hwsim_mon); | |
909 | if (err < 0) | |
910 | goto failed_mon; | |
911 | ||
912 | rtnl_unlock(); | |
913 | ||
914 | return 0; | |
915 | ||
916 | failed_mon: | |
917 | rtnl_unlock(); | |
918 | free_netdev(hwsim_mon); | |
3a33cc10 IS |
919 | mac80211_hwsim_free(); |
920 | return err; | |
acc1e7a3 | 921 | |
3a33cc10 IS |
922 | failed_hw: |
923 | device_unregister(data->dev); | |
924 | failed_drvdata: | |
925 | ieee80211_free_hw(hw); | |
acc1e7a3 JM |
926 | failed: |
927 | mac80211_hwsim_free(); | |
928 | return err; | |
929 | } | |
930 | ||
931 | ||
932 | static void __exit exit_mac80211_hwsim(void) | |
933 | { | |
0e057d73 | 934 | printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n"); |
acc1e7a3 JM |
935 | |
936 | unregister_netdev(hwsim_mon); | |
937 | mac80211_hwsim_free(); | |
938 | } | |
939 | ||
940 | ||
941 | module_init(init_mac80211_hwsim); | |
942 | module_exit(exit_mac80211_hwsim); |