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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") | |
13 | * - IEEE 802.11a and 802.11n modes | |
14 | * - RX filtering based on filter configuration (data->rx_filter) | |
15 | */ | |
16 | ||
0e057d73 JB |
17 | #include <linux/list.h> |
18 | #include <linux/spinlock.h> | |
acc1e7a3 JM |
19 | #include <net/mac80211.h> |
20 | #include <net/ieee80211_radiotap.h> | |
21 | #include <linux/if_arp.h> | |
22 | #include <linux/rtnetlink.h> | |
23 | #include <linux/etherdevice.h> | |
fc6971d4 | 24 | #include <linux/debugfs.h> |
acc1e7a3 JM |
25 | |
26 | MODULE_AUTHOR("Jouni Malinen"); | |
27 | MODULE_DESCRIPTION("Software simulator of 802.11 radio(s) for mac80211"); | |
28 | MODULE_LICENSE("GPL"); | |
29 | ||
30 | static int radios = 2; | |
31 | module_param(radios, int, 0444); | |
32 | MODULE_PARM_DESC(radios, "Number of simulated radios"); | |
33 | ||
8aa21e6f JB |
34 | struct hwsim_vif_priv { |
35 | u32 magic; | |
fc6971d4 JM |
36 | u8 bssid[ETH_ALEN]; |
37 | bool assoc; | |
38 | u16 aid; | |
8aa21e6f JB |
39 | }; |
40 | ||
41 | #define HWSIM_VIF_MAGIC 0x69537748 | |
42 | ||
43 | static inline void hwsim_check_magic(struct ieee80211_vif *vif) | |
44 | { | |
45 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; | |
46 | WARN_ON(vp->magic != HWSIM_VIF_MAGIC); | |
47 | } | |
48 | ||
49 | static inline void hwsim_set_magic(struct ieee80211_vif *vif) | |
50 | { | |
51 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; | |
52 | vp->magic = HWSIM_VIF_MAGIC; | |
53 | } | |
54 | ||
55 | static inline void hwsim_clear_magic(struct ieee80211_vif *vif) | |
56 | { | |
57 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; | |
58 | vp->magic = 0; | |
59 | } | |
acc1e7a3 | 60 | |
81c06523 JB |
61 | struct hwsim_sta_priv { |
62 | u32 magic; | |
63 | }; | |
64 | ||
65 | #define HWSIM_STA_MAGIC 0x6d537748 | |
66 | ||
67 | static inline void hwsim_check_sta_magic(struct ieee80211_sta *sta) | |
68 | { | |
69 | struct hwsim_sta_priv *sp = (void *)sta->drv_priv; | |
5d6924ea | 70 | WARN_ON(sp->magic != HWSIM_STA_MAGIC); |
81c06523 JB |
71 | } |
72 | ||
73 | static inline void hwsim_set_sta_magic(struct ieee80211_sta *sta) | |
74 | { | |
75 | struct hwsim_sta_priv *sp = (void *)sta->drv_priv; | |
5d6924ea | 76 | sp->magic = HWSIM_STA_MAGIC; |
81c06523 JB |
77 | } |
78 | ||
79 | static inline void hwsim_clear_sta_magic(struct ieee80211_sta *sta) | |
80 | { | |
81 | struct hwsim_sta_priv *sp = (void *)sta->drv_priv; | |
82 | sp->magic = 0; | |
83 | } | |
84 | ||
acc1e7a3 JM |
85 | static struct class *hwsim_class; |
86 | ||
acc1e7a3 JM |
87 | static struct net_device *hwsim_mon; /* global monitor netdev */ |
88 | ||
89 | ||
90 | static const struct ieee80211_channel hwsim_channels[] = { | |
91 | { .center_freq = 2412 }, | |
92 | { .center_freq = 2417 }, | |
93 | { .center_freq = 2422 }, | |
94 | { .center_freq = 2427 }, | |
95 | { .center_freq = 2432 }, | |
96 | { .center_freq = 2437 }, | |
97 | { .center_freq = 2442 }, | |
98 | { .center_freq = 2447 }, | |
99 | { .center_freq = 2452 }, | |
100 | { .center_freq = 2457 }, | |
101 | { .center_freq = 2462 }, | |
102 | { .center_freq = 2467 }, | |
103 | { .center_freq = 2472 }, | |
104 | { .center_freq = 2484 }, | |
105 | }; | |
106 | ||
107 | static const struct ieee80211_rate hwsim_rates[] = { | |
108 | { .bitrate = 10 }, | |
109 | { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
110 | { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
111 | { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE }, | |
112 | { .bitrate = 60 }, | |
113 | { .bitrate = 90 }, | |
114 | { .bitrate = 120 }, | |
115 | { .bitrate = 180 }, | |
116 | { .bitrate = 240 }, | |
117 | { .bitrate = 360 }, | |
118 | { .bitrate = 480 }, | |
119 | { .bitrate = 540 } | |
120 | }; | |
121 | ||
0e057d73 JB |
122 | static spinlock_t hwsim_radio_lock; |
123 | static struct list_head hwsim_radios; | |
124 | ||
acc1e7a3 | 125 | struct mac80211_hwsim_data { |
0e057d73 JB |
126 | struct list_head list; |
127 | struct ieee80211_hw *hw; | |
acc1e7a3 JM |
128 | struct device *dev; |
129 | struct ieee80211_supported_band band; | |
130 | struct ieee80211_channel channels[ARRAY_SIZE(hwsim_channels)]; | |
131 | struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)]; | |
132 | ||
133 | struct ieee80211_channel *channel; | |
134 | int radio_enabled; | |
135 | unsigned long beacon_int; /* in jiffies unit */ | |
136 | unsigned int rx_filter; | |
137 | int started; | |
138 | struct timer_list beacon_timer; | |
fc6971d4 JM |
139 | enum ps_mode { |
140 | PS_DISABLED, PS_ENABLED, PS_AUTO_POLL, PS_MANUAL_POLL | |
141 | } ps; | |
142 | bool ps_poll_pending; | |
143 | struct dentry *debugfs; | |
144 | struct dentry *debugfs_ps; | |
acc1e7a3 JM |
145 | }; |
146 | ||
147 | ||
148 | struct hwsim_radiotap_hdr { | |
149 | struct ieee80211_radiotap_header hdr; | |
150 | u8 rt_flags; | |
151 | u8 rt_rate; | |
152 | __le16 rt_channel; | |
153 | __le16 rt_chbitmask; | |
154 | } __attribute__ ((packed)); | |
155 | ||
156 | ||
157 | static int hwsim_mon_xmit(struct sk_buff *skb, struct net_device *dev) | |
158 | { | |
159 | /* TODO: allow packet injection */ | |
160 | dev_kfree_skb(skb); | |
161 | return 0; | |
162 | } | |
163 | ||
164 | ||
165 | static void mac80211_hwsim_monitor_rx(struct ieee80211_hw *hw, | |
166 | struct sk_buff *tx_skb) | |
167 | { | |
168 | struct mac80211_hwsim_data *data = hw->priv; | |
169 | struct sk_buff *skb; | |
170 | struct hwsim_radiotap_hdr *hdr; | |
171 | u16 flags; | |
172 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_skb); | |
173 | struct ieee80211_rate *txrate = ieee80211_get_tx_rate(hw, info); | |
174 | ||
175 | if (!netif_running(hwsim_mon)) | |
176 | return; | |
177 | ||
178 | skb = skb_copy_expand(tx_skb, sizeof(*hdr), 0, GFP_ATOMIC); | |
179 | if (skb == NULL) | |
180 | return; | |
181 | ||
182 | hdr = (struct hwsim_radiotap_hdr *) skb_push(skb, sizeof(*hdr)); | |
183 | hdr->hdr.it_version = PKTHDR_RADIOTAP_VERSION; | |
184 | hdr->hdr.it_pad = 0; | |
185 | hdr->hdr.it_len = cpu_to_le16(sizeof(*hdr)); | |
f248f105 JM |
186 | hdr->hdr.it_present = cpu_to_le32((1 << IEEE80211_RADIOTAP_FLAGS) | |
187 | (1 << IEEE80211_RADIOTAP_RATE) | | |
188 | (1 << IEEE80211_RADIOTAP_CHANNEL)); | |
acc1e7a3 JM |
189 | hdr->rt_flags = 0; |
190 | hdr->rt_rate = txrate->bitrate / 5; | |
df70b4ac | 191 | hdr->rt_channel = cpu_to_le16(data->channel->center_freq); |
acc1e7a3 JM |
192 | flags = IEEE80211_CHAN_2GHZ; |
193 | if (txrate->flags & IEEE80211_RATE_ERP_G) | |
194 | flags |= IEEE80211_CHAN_OFDM; | |
195 | else | |
196 | flags |= IEEE80211_CHAN_CCK; | |
197 | hdr->rt_chbitmask = cpu_to_le16(flags); | |
198 | ||
199 | skb->dev = hwsim_mon; | |
200 | skb_set_mac_header(skb, 0); | |
201 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
202 | skb->pkt_type = PACKET_OTHERHOST; | |
f248f105 | 203 | skb->protocol = htons(ETH_P_802_2); |
acc1e7a3 JM |
204 | memset(skb->cb, 0, sizeof(skb->cb)); |
205 | netif_rx(skb); | |
206 | } | |
207 | ||
208 | ||
fc6971d4 JM |
209 | static bool hwsim_ps_rx_ok(struct mac80211_hwsim_data *data, |
210 | struct sk_buff *skb) | |
211 | { | |
212 | switch (data->ps) { | |
213 | case PS_DISABLED: | |
214 | return true; | |
215 | case PS_ENABLED: | |
216 | return false; | |
217 | case PS_AUTO_POLL: | |
218 | /* TODO: accept (some) Beacons by default and other frames only | |
219 | * if pending PS-Poll has been sent */ | |
220 | return true; | |
221 | case PS_MANUAL_POLL: | |
222 | /* Allow unicast frames to own address if there is a pending | |
223 | * PS-Poll */ | |
224 | if (data->ps_poll_pending && | |
225 | memcmp(data->hw->wiphy->perm_addr, skb->data + 4, | |
226 | ETH_ALEN) == 0) { | |
227 | data->ps_poll_pending = false; | |
228 | return true; | |
229 | } | |
230 | return false; | |
231 | } | |
232 | ||
233 | return true; | |
234 | } | |
235 | ||
236 | ||
0e057d73 JB |
237 | static bool mac80211_hwsim_tx_frame(struct ieee80211_hw *hw, |
238 | struct sk_buff *skb) | |
acc1e7a3 | 239 | { |
0e057d73 JB |
240 | struct mac80211_hwsim_data *data = hw->priv, *data2; |
241 | bool ack = false; | |
e36cfdc9 | 242 | struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; |
acc1e7a3 | 243 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
e36cfdc9 | 244 | struct ieee80211_rx_status rx_status; |
acc1e7a3 JM |
245 | |
246 | memset(&rx_status, 0, sizeof(rx_status)); | |
247 | /* TODO: set mactime */ | |
248 | rx_status.freq = data->channel->center_freq; | |
249 | rx_status.band = data->channel->band; | |
e6a9854b | 250 | rx_status.rate_idx = info->control.rates[0].idx; |
acc1e7a3 JM |
251 | /* TODO: simulate signal strength (and optional packet drop) */ |
252 | ||
fc6971d4 JM |
253 | if (data->ps != PS_DISABLED) |
254 | hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); | |
255 | ||
acc1e7a3 | 256 | /* Copy skb to all enabled radios that are on the current frequency */ |
0e057d73 JB |
257 | spin_lock(&hwsim_radio_lock); |
258 | list_for_each_entry(data2, &hwsim_radios, list) { | |
acc1e7a3 JM |
259 | struct sk_buff *nskb; |
260 | ||
0e057d73 | 261 | if (data == data2) |
acc1e7a3 | 262 | continue; |
0e057d73 | 263 | |
acc1e7a3 | 264 | if (!data2->started || !data2->radio_enabled || |
fc6971d4 | 265 | !hwsim_ps_rx_ok(data2, skb) || |
acc1e7a3 JM |
266 | data->channel->center_freq != data2->channel->center_freq) |
267 | continue; | |
268 | ||
269 | nskb = skb_copy(skb, GFP_ATOMIC); | |
270 | if (nskb == NULL) | |
271 | continue; | |
272 | ||
0e057d73 | 273 | if (memcmp(hdr->addr1, data2->hw->wiphy->perm_addr, |
acc1e7a3 | 274 | ETH_ALEN) == 0) |
0e057d73 JB |
275 | ack = true; |
276 | ieee80211_rx_irqsafe(data2->hw, nskb, &rx_status); | |
acc1e7a3 | 277 | } |
0e057d73 | 278 | spin_unlock(&hwsim_radio_lock); |
acc1e7a3 | 279 | |
e36cfdc9 JM |
280 | return ack; |
281 | } | |
282 | ||
283 | ||
284 | static int mac80211_hwsim_tx(struct ieee80211_hw *hw, struct sk_buff *skb) | |
285 | { | |
286 | struct mac80211_hwsim_data *data = hw->priv; | |
0e057d73 | 287 | bool ack; |
e36cfdc9 JM |
288 | struct ieee80211_tx_info *txi; |
289 | ||
290 | mac80211_hwsim_monitor_rx(hw, skb); | |
291 | ||
292 | if (skb->len < 10) { | |
293 | /* Should not happen; just a sanity check for addr1 use */ | |
294 | dev_kfree_skb(skb); | |
295 | return NETDEV_TX_OK; | |
296 | } | |
297 | ||
298 | if (!data->radio_enabled) { | |
299 | printk(KERN_DEBUG "%s: dropped TX frame since radio " | |
300 | "disabled\n", wiphy_name(hw->wiphy)); | |
301 | dev_kfree_skb(skb); | |
302 | return NETDEV_TX_OK; | |
303 | } | |
304 | ||
305 | ack = mac80211_hwsim_tx_frame(hw, skb); | |
306 | ||
acc1e7a3 | 307 | txi = IEEE80211_SKB_CB(skb); |
8aa21e6f | 308 | |
25d834e1 JB |
309 | if (txi->control.vif) |
310 | hwsim_check_magic(txi->control.vif); | |
81c06523 JB |
311 | if (txi->control.sta) |
312 | hwsim_check_sta_magic(txi->control.sta); | |
8aa21e6f | 313 | |
e6a9854b JB |
314 | ieee80211_tx_info_clear_status(txi); |
315 | if (!(txi->flags & IEEE80211_TX_CTL_NO_ACK) && ack) | |
316 | txi->flags |= IEEE80211_TX_STAT_ACK; | |
acc1e7a3 JM |
317 | ieee80211_tx_status_irqsafe(hw, skb); |
318 | return NETDEV_TX_OK; | |
319 | } | |
320 | ||
321 | ||
322 | static int mac80211_hwsim_start(struct ieee80211_hw *hw) | |
323 | { | |
324 | struct mac80211_hwsim_data *data = hw->priv; | |
325 | printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__); | |
326 | data->started = 1; | |
327 | return 0; | |
328 | } | |
329 | ||
330 | ||
331 | static void mac80211_hwsim_stop(struct ieee80211_hw *hw) | |
332 | { | |
333 | struct mac80211_hwsim_data *data = hw->priv; | |
334 | data->started = 0; | |
ab1ef980 | 335 | del_timer(&data->beacon_timer); |
acc1e7a3 JM |
336 | printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__); |
337 | } | |
338 | ||
339 | ||
340 | static int mac80211_hwsim_add_interface(struct ieee80211_hw *hw, | |
341 | struct ieee80211_if_init_conf *conf) | |
342 | { | |
e174961c | 343 | printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n", |
acc1e7a3 | 344 | wiphy_name(hw->wiphy), __func__, conf->type, |
e174961c | 345 | conf->mac_addr); |
8aa21e6f | 346 | hwsim_set_magic(conf->vif); |
acc1e7a3 JM |
347 | return 0; |
348 | } | |
349 | ||
350 | ||
351 | static void mac80211_hwsim_remove_interface( | |
352 | struct ieee80211_hw *hw, struct ieee80211_if_init_conf *conf) | |
353 | { | |
e174961c | 354 | printk(KERN_DEBUG "%s:%s (type=%d mac_addr=%pM)\n", |
acc1e7a3 | 355 | wiphy_name(hw->wiphy), __func__, conf->type, |
e174961c | 356 | conf->mac_addr); |
8aa21e6f JB |
357 | hwsim_check_magic(conf->vif); |
358 | hwsim_clear_magic(conf->vif); | |
acc1e7a3 JM |
359 | } |
360 | ||
361 | ||
362 | static void mac80211_hwsim_beacon_tx(void *arg, u8 *mac, | |
363 | struct ieee80211_vif *vif) | |
364 | { | |
365 | struct ieee80211_hw *hw = arg; | |
acc1e7a3 | 366 | struct sk_buff *skb; |
acc1e7a3 JM |
367 | struct ieee80211_tx_info *info; |
368 | ||
8aa21e6f JB |
369 | hwsim_check_magic(vif); |
370 | ||
55b39619 AY |
371 | if (vif->type != NL80211_IFTYPE_AP && |
372 | vif->type != NL80211_IFTYPE_MESH_POINT) | |
acc1e7a3 JM |
373 | return; |
374 | ||
375 | skb = ieee80211_beacon_get(hw, vif); | |
376 | if (skb == NULL) | |
377 | return; | |
378 | info = IEEE80211_SKB_CB(skb); | |
379 | ||
380 | mac80211_hwsim_monitor_rx(hw, skb); | |
e36cfdc9 | 381 | mac80211_hwsim_tx_frame(hw, skb); |
acc1e7a3 JM |
382 | dev_kfree_skb(skb); |
383 | } | |
384 | ||
385 | ||
386 | static void mac80211_hwsim_beacon(unsigned long arg) | |
387 | { | |
388 | struct ieee80211_hw *hw = (struct ieee80211_hw *) arg; | |
389 | struct mac80211_hwsim_data *data = hw->priv; | |
390 | ||
391 | if (!data->started || !data->radio_enabled) | |
392 | return; | |
393 | ||
f248f105 JM |
394 | ieee80211_iterate_active_interfaces_atomic( |
395 | hw, mac80211_hwsim_beacon_tx, hw); | |
acc1e7a3 JM |
396 | |
397 | data->beacon_timer.expires = jiffies + data->beacon_int; | |
398 | add_timer(&data->beacon_timer); | |
399 | } | |
400 | ||
401 | ||
e8975581 | 402 | static int mac80211_hwsim_config(struct ieee80211_hw *hw, u32 changed) |
acc1e7a3 JM |
403 | { |
404 | struct mac80211_hwsim_data *data = hw->priv; | |
e8975581 | 405 | struct ieee80211_conf *conf = &hw->conf; |
acc1e7a3 JM |
406 | |
407 | printk(KERN_DEBUG "%s:%s (freq=%d radio_enabled=%d beacon_int=%d)\n", | |
408 | wiphy_name(hw->wiphy), __func__, | |
409 | conf->channel->center_freq, conf->radio_enabled, | |
410 | conf->beacon_int); | |
411 | ||
412 | data->channel = conf->channel; | |
413 | data->radio_enabled = conf->radio_enabled; | |
414 | data->beacon_int = 1024 * conf->beacon_int / 1000 * HZ / 1000; | |
415 | if (data->beacon_int < 1) | |
416 | data->beacon_int = 1; | |
417 | ||
418 | if (!data->started || !data->radio_enabled) | |
419 | del_timer(&data->beacon_timer); | |
420 | else | |
421 | mod_timer(&data->beacon_timer, jiffies + data->beacon_int); | |
422 | ||
423 | return 0; | |
424 | } | |
425 | ||
426 | ||
427 | static void mac80211_hwsim_configure_filter(struct ieee80211_hw *hw, | |
428 | unsigned int changed_flags, | |
429 | unsigned int *total_flags, | |
430 | int mc_count, | |
431 | struct dev_addr_list *mc_list) | |
432 | { | |
433 | struct mac80211_hwsim_data *data = hw->priv; | |
434 | ||
435 | printk(KERN_DEBUG "%s:%s\n", wiphy_name(hw->wiphy), __func__); | |
436 | ||
437 | data->rx_filter = 0; | |
438 | if (*total_flags & FIF_PROMISC_IN_BSS) | |
439 | data->rx_filter |= FIF_PROMISC_IN_BSS; | |
440 | if (*total_flags & FIF_ALLMULTI) | |
441 | data->rx_filter |= FIF_ALLMULTI; | |
442 | ||
443 | *total_flags = data->rx_filter; | |
444 | } | |
445 | ||
8aa21e6f JB |
446 | static int mac80211_hwsim_config_interface(struct ieee80211_hw *hw, |
447 | struct ieee80211_vif *vif, | |
448 | struct ieee80211_if_conf *conf) | |
449 | { | |
fc6971d4 JM |
450 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; |
451 | ||
8aa21e6f | 452 | hwsim_check_magic(vif); |
fc6971d4 JM |
453 | if (conf->changed & IEEE80211_IFCC_BSSID) { |
454 | DECLARE_MAC_BUF(mac); | |
455 | printk(KERN_DEBUG "%s:%s: BSSID changed: %s\n", | |
456 | wiphy_name(hw->wiphy), __func__, | |
457 | print_mac(mac, conf->bssid)); | |
458 | memcpy(vp->bssid, conf->bssid, ETH_ALEN); | |
459 | } | |
8aa21e6f JB |
460 | return 0; |
461 | } | |
acc1e7a3 | 462 | |
8aa21e6f JB |
463 | static void mac80211_hwsim_bss_info_changed(struct ieee80211_hw *hw, |
464 | struct ieee80211_vif *vif, | |
465 | struct ieee80211_bss_conf *info, | |
466 | u32 changed) | |
467 | { | |
fc6971d4 JM |
468 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; |
469 | ||
8aa21e6f | 470 | hwsim_check_magic(vif); |
fe63bfa3 JM |
471 | |
472 | printk(KERN_DEBUG "%s:%s(changed=0x%x)\n", | |
473 | wiphy_name(hw->wiphy), __func__, changed); | |
474 | ||
475 | if (changed & BSS_CHANGED_ASSOC) { | |
476 | printk(KERN_DEBUG " %s: ASSOC: assoc=%d aid=%d\n", | |
477 | wiphy_name(hw->wiphy), info->assoc, info->aid); | |
fc6971d4 JM |
478 | vp->assoc = info->assoc; |
479 | vp->aid = info->aid; | |
fe63bfa3 JM |
480 | } |
481 | ||
482 | if (changed & BSS_CHANGED_ERP_CTS_PROT) { | |
483 | printk(KERN_DEBUG " %s: ERP_CTS_PROT: %d\n", | |
484 | wiphy_name(hw->wiphy), info->use_cts_prot); | |
485 | } | |
486 | ||
487 | if (changed & BSS_CHANGED_ERP_PREAMBLE) { | |
488 | printk(KERN_DEBUG " %s: ERP_PREAMBLE: %d\n", | |
489 | wiphy_name(hw->wiphy), info->use_short_preamble); | |
490 | } | |
491 | ||
492 | if (changed & BSS_CHANGED_ERP_SLOT) { | |
493 | printk(KERN_DEBUG " %s: ERP_SLOT: %d\n", | |
494 | wiphy_name(hw->wiphy), info->use_short_slot); | |
495 | } | |
496 | ||
497 | if (changed & BSS_CHANGED_HT) { | |
498 | printk(KERN_DEBUG " %s: HT: sec_ch_offs=%d width_40_ok=%d " | |
499 | "op_mode=%d\n", | |
500 | wiphy_name(hw->wiphy), | |
501 | info->ht.secondary_channel_offset, | |
502 | info->ht.width_40_ok, info->ht.operation_mode); | |
503 | } | |
504 | ||
505 | if (changed & BSS_CHANGED_BASIC_RATES) { | |
506 | printk(KERN_DEBUG " %s: BASIC_RATES: 0x%llx\n", | |
507 | wiphy_name(hw->wiphy), | |
508 | (unsigned long long) info->basic_rates); | |
509 | } | |
8aa21e6f JB |
510 | } |
511 | ||
512 | static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw, | |
513 | struct ieee80211_vif *vif, | |
17741cdc JB |
514 | enum sta_notify_cmd cmd, |
515 | struct ieee80211_sta *sta) | |
8aa21e6f JB |
516 | { |
517 | hwsim_check_magic(vif); | |
81c06523 JB |
518 | switch (cmd) { |
519 | case STA_NOTIFY_ADD: | |
520 | hwsim_set_sta_magic(sta); | |
521 | break; | |
522 | case STA_NOTIFY_REMOVE: | |
523 | hwsim_clear_sta_magic(sta); | |
524 | break; | |
525 | } | |
526 | } | |
527 | ||
528 | static int mac80211_hwsim_set_tim(struct ieee80211_hw *hw, | |
529 | struct ieee80211_sta *sta, | |
530 | bool set) | |
531 | { | |
532 | hwsim_check_sta_magic(sta); | |
533 | return 0; | |
8aa21e6f | 534 | } |
acc1e7a3 | 535 | |
1e898ff8 JM |
536 | static int mac80211_hwsim_conf_tx( |
537 | struct ieee80211_hw *hw, u16 queue, | |
538 | const struct ieee80211_tx_queue_params *params) | |
539 | { | |
540 | printk(KERN_DEBUG "%s:%s (queue=%d txop=%d cw_min=%d cw_max=%d " | |
541 | "aifs=%d)\n", | |
542 | wiphy_name(hw->wiphy), __func__, queue, | |
543 | params->txop, params->cw_min, params->cw_max, params->aifs); | |
544 | return 0; | |
545 | } | |
546 | ||
acc1e7a3 JM |
547 | static const struct ieee80211_ops mac80211_hwsim_ops = |
548 | { | |
549 | .tx = mac80211_hwsim_tx, | |
550 | .start = mac80211_hwsim_start, | |
551 | .stop = mac80211_hwsim_stop, | |
552 | .add_interface = mac80211_hwsim_add_interface, | |
553 | .remove_interface = mac80211_hwsim_remove_interface, | |
554 | .config = mac80211_hwsim_config, | |
555 | .configure_filter = mac80211_hwsim_configure_filter, | |
8aa21e6f JB |
556 | .config_interface = mac80211_hwsim_config_interface, |
557 | .bss_info_changed = mac80211_hwsim_bss_info_changed, | |
558 | .sta_notify = mac80211_hwsim_sta_notify, | |
81c06523 | 559 | .set_tim = mac80211_hwsim_set_tim, |
1e898ff8 | 560 | .conf_tx = mac80211_hwsim_conf_tx, |
acc1e7a3 JM |
561 | }; |
562 | ||
563 | ||
564 | static void mac80211_hwsim_free(void) | |
565 | { | |
0e057d73 JB |
566 | struct list_head tmplist, *i, *tmp; |
567 | struct mac80211_hwsim_data *data; | |
568 | ||
569 | INIT_LIST_HEAD(&tmplist); | |
570 | ||
571 | spin_lock_bh(&hwsim_radio_lock); | |
572 | list_for_each_safe(i, tmp, &hwsim_radios) | |
573 | list_move(i, &tmplist); | |
574 | spin_unlock_bh(&hwsim_radio_lock); | |
575 | ||
576 | list_for_each_entry(data, &tmplist, list) { | |
fc6971d4 JM |
577 | debugfs_remove(data->debugfs_ps); |
578 | debugfs_remove(data->debugfs); | |
0e057d73 JB |
579 | ieee80211_unregister_hw(data->hw); |
580 | device_unregister(data->dev); | |
581 | ieee80211_free_hw(data->hw); | |
acc1e7a3 | 582 | } |
acc1e7a3 JM |
583 | class_destroy(hwsim_class); |
584 | } | |
585 | ||
586 | ||
587 | static struct device_driver mac80211_hwsim_driver = { | |
588 | .name = "mac80211_hwsim" | |
589 | }; | |
590 | ||
591 | ||
592 | static void hwsim_mon_setup(struct net_device *dev) | |
593 | { | |
594 | dev->hard_start_xmit = hwsim_mon_xmit; | |
595 | dev->destructor = free_netdev; | |
596 | ether_setup(dev); | |
597 | dev->tx_queue_len = 0; | |
598 | dev->type = ARPHRD_IEEE80211_RADIOTAP; | |
599 | memset(dev->dev_addr, 0, ETH_ALEN); | |
600 | dev->dev_addr[0] = 0x12; | |
601 | } | |
602 | ||
603 | ||
fc6971d4 JM |
604 | static void hwsim_send_ps_poll(void *dat, u8 *mac, struct ieee80211_vif *vif) |
605 | { | |
606 | struct mac80211_hwsim_data *data = dat; | |
607 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; | |
608 | DECLARE_MAC_BUF(buf); | |
609 | struct sk_buff *skb; | |
610 | struct ieee80211_pspoll *pspoll; | |
611 | ||
612 | if (!vp->assoc) | |
613 | return; | |
614 | ||
615 | printk(KERN_DEBUG "%s:%s: send PS-Poll to %s for aid %d\n", | |
616 | wiphy_name(data->hw->wiphy), __func__, | |
617 | print_mac(buf, vp->bssid), vp->aid); | |
618 | ||
619 | skb = dev_alloc_skb(sizeof(*pspoll)); | |
620 | if (!skb) | |
621 | return; | |
622 | pspoll = (void *) skb_put(skb, sizeof(*pspoll)); | |
623 | pspoll->frame_control = cpu_to_le16(IEEE80211_FTYPE_CTL | | |
624 | IEEE80211_STYPE_PSPOLL | | |
625 | IEEE80211_FCTL_PM); | |
626 | pspoll->aid = cpu_to_le16(0xc000 | vp->aid); | |
627 | memcpy(pspoll->bssid, vp->bssid, ETH_ALEN); | |
628 | memcpy(pspoll->ta, mac, ETH_ALEN); | |
629 | if (data->radio_enabled && | |
630 | !mac80211_hwsim_tx_frame(data->hw, skb)) | |
631 | printk(KERN_DEBUG "%s: PS-Poll frame not ack'ed\n", __func__); | |
632 | dev_kfree_skb(skb); | |
633 | } | |
634 | ||
635 | ||
636 | static void hwsim_send_nullfunc(struct mac80211_hwsim_data *data, u8 *mac, | |
637 | struct ieee80211_vif *vif, int ps) | |
638 | { | |
639 | struct hwsim_vif_priv *vp = (void *)vif->drv_priv; | |
640 | DECLARE_MAC_BUF(buf); | |
641 | struct sk_buff *skb; | |
642 | struct ieee80211_hdr *hdr; | |
643 | ||
644 | if (!vp->assoc) | |
645 | return; | |
646 | ||
647 | printk(KERN_DEBUG "%s:%s: send data::nullfunc to %s ps=%d\n", | |
648 | wiphy_name(data->hw->wiphy), __func__, | |
649 | print_mac(buf, vp->bssid), ps); | |
650 | ||
651 | skb = dev_alloc_skb(sizeof(*hdr)); | |
652 | if (!skb) | |
653 | return; | |
654 | hdr = (void *) skb_put(skb, sizeof(*hdr) - ETH_ALEN); | |
655 | hdr->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA | | |
656 | IEEE80211_STYPE_NULLFUNC | | |
657 | (ps ? IEEE80211_FCTL_PM : 0)); | |
658 | hdr->duration_id = cpu_to_le16(0); | |
659 | memcpy(hdr->addr1, vp->bssid, ETH_ALEN); | |
660 | memcpy(hdr->addr2, mac, ETH_ALEN); | |
661 | memcpy(hdr->addr3, vp->bssid, ETH_ALEN); | |
662 | if (data->radio_enabled && | |
663 | !mac80211_hwsim_tx_frame(data->hw, skb)) | |
664 | printk(KERN_DEBUG "%s: nullfunc frame not ack'ed\n", __func__); | |
665 | dev_kfree_skb(skb); | |
666 | } | |
667 | ||
668 | ||
669 | static void hwsim_send_nullfunc_ps(void *dat, u8 *mac, | |
670 | struct ieee80211_vif *vif) | |
671 | { | |
672 | struct mac80211_hwsim_data *data = dat; | |
673 | hwsim_send_nullfunc(data, mac, vif, 1); | |
674 | } | |
675 | ||
676 | ||
677 | static void hwsim_send_nullfunc_no_ps(void *dat, u8 *mac, | |
678 | struct ieee80211_vif *vif) | |
679 | { | |
680 | struct mac80211_hwsim_data *data = dat; | |
681 | hwsim_send_nullfunc(data, mac, vif, 0); | |
682 | } | |
683 | ||
684 | ||
685 | static int hwsim_fops_ps_read(void *dat, u64 *val) | |
686 | { | |
687 | struct mac80211_hwsim_data *data = dat; | |
688 | *val = data->ps; | |
689 | return 0; | |
690 | } | |
691 | ||
692 | static int hwsim_fops_ps_write(void *dat, u64 val) | |
693 | { | |
694 | struct mac80211_hwsim_data *data = dat; | |
695 | enum ps_mode old_ps; | |
696 | ||
697 | if (val != PS_DISABLED && val != PS_ENABLED && val != PS_AUTO_POLL && | |
698 | val != PS_MANUAL_POLL) | |
699 | return -EINVAL; | |
700 | ||
701 | old_ps = data->ps; | |
702 | data->ps = val; | |
703 | ||
704 | if (val == PS_MANUAL_POLL) { | |
705 | ieee80211_iterate_active_interfaces(data->hw, | |
706 | hwsim_send_ps_poll, data); | |
707 | data->ps_poll_pending = true; | |
708 | } else if (old_ps == PS_DISABLED && val != PS_DISABLED) { | |
709 | ieee80211_iterate_active_interfaces(data->hw, | |
710 | hwsim_send_nullfunc_ps, | |
711 | data); | |
712 | } else if (old_ps != PS_DISABLED && val == PS_DISABLED) { | |
713 | ieee80211_iterate_active_interfaces(data->hw, | |
714 | hwsim_send_nullfunc_no_ps, | |
715 | data); | |
716 | } | |
717 | ||
718 | return 0; | |
719 | } | |
720 | ||
721 | DEFINE_SIMPLE_ATTRIBUTE(hwsim_fops_ps, hwsim_fops_ps_read, hwsim_fops_ps_write, | |
722 | "%llu\n"); | |
723 | ||
724 | ||
acc1e7a3 JM |
725 | static int __init init_mac80211_hwsim(void) |
726 | { | |
727 | int i, err = 0; | |
728 | u8 addr[ETH_ALEN]; | |
729 | struct mac80211_hwsim_data *data; | |
730 | struct ieee80211_hw *hw; | |
acc1e7a3 | 731 | |
0e057d73 | 732 | if (radios < 1 || radios > 100) |
acc1e7a3 JM |
733 | return -EINVAL; |
734 | ||
0e057d73 JB |
735 | spin_lock_init(&hwsim_radio_lock); |
736 | INIT_LIST_HEAD(&hwsim_radios); | |
acc1e7a3 JM |
737 | |
738 | hwsim_class = class_create(THIS_MODULE, "mac80211_hwsim"); | |
0e057d73 | 739 | if (IS_ERR(hwsim_class)) |
acc1e7a3 | 740 | return PTR_ERR(hwsim_class); |
acc1e7a3 JM |
741 | |
742 | memset(addr, 0, ETH_ALEN); | |
743 | addr[0] = 0x02; | |
744 | ||
0e057d73 | 745 | for (i = 0; i < radios; i++) { |
acc1e7a3 JM |
746 | printk(KERN_DEBUG "mac80211_hwsim: Initializing radio %d\n", |
747 | i); | |
748 | hw = ieee80211_alloc_hw(sizeof(*data), &mac80211_hwsim_ops); | |
0e057d73 | 749 | if (!hw) { |
acc1e7a3 JM |
750 | printk(KERN_DEBUG "mac80211_hwsim: ieee80211_alloc_hw " |
751 | "failed\n"); | |
752 | err = -ENOMEM; | |
753 | goto failed; | |
754 | } | |
acc1e7a3 | 755 | data = hw->priv; |
0e057d73 JB |
756 | data->hw = hw; |
757 | ||
6e05d6c4 GKH |
758 | data->dev = device_create(hwsim_class, NULL, 0, hw, |
759 | "hwsim%d", i); | |
acc1e7a3 | 760 | if (IS_ERR(data->dev)) { |
e800f17c | 761 | printk(KERN_DEBUG |
6e05d6c4 | 762 | "mac80211_hwsim: device_create " |
acc1e7a3 JM |
763 | "failed (%ld)\n", PTR_ERR(data->dev)); |
764 | err = -ENOMEM; | |
3a33cc10 | 765 | goto failed_drvdata; |
acc1e7a3 JM |
766 | } |
767 | data->dev->driver = &mac80211_hwsim_driver; | |
acc1e7a3 JM |
768 | |
769 | SET_IEEE80211_DEV(hw, data->dev); | |
770 | addr[3] = i >> 8; | |
771 | addr[4] = i; | |
772 | SET_IEEE80211_PERM_ADDR(hw, addr); | |
773 | ||
774 | hw->channel_change_time = 1; | |
87e8b64e | 775 | hw->queues = 4; |
f59ac048 LR |
776 | hw->wiphy->interface_modes = |
777 | BIT(NL80211_IFTYPE_STATION) | | |
55b39619 AY |
778 | BIT(NL80211_IFTYPE_AP) | |
779 | BIT(NL80211_IFTYPE_MESH_POINT); | |
87e8b64e | 780 | hw->ampdu_queues = 1; |
acc1e7a3 | 781 | |
8aa21e6f JB |
782 | /* ask mac80211 to reserve space for magic */ |
783 | hw->vif_data_size = sizeof(struct hwsim_vif_priv); | |
81c06523 | 784 | hw->sta_data_size = sizeof(struct hwsim_sta_priv); |
8aa21e6f | 785 | |
acc1e7a3 JM |
786 | memcpy(data->channels, hwsim_channels, sizeof(hwsim_channels)); |
787 | memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates)); | |
788 | data->band.channels = data->channels; | |
789 | data->band.n_channels = ARRAY_SIZE(hwsim_channels); | |
790 | data->band.bitrates = data->rates; | |
791 | data->band.n_bitrates = ARRAY_SIZE(hwsim_rates); | |
d9fe60de JB |
792 | data->band.ht_cap.ht_supported = true; |
793 | data->band.ht_cap.cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 | | |
87e8b64e JM |
794 | IEEE80211_HT_CAP_GRN_FLD | |
795 | IEEE80211_HT_CAP_SGI_40 | | |
796 | IEEE80211_HT_CAP_DSSSCCK40; | |
d9fe60de JB |
797 | data->band.ht_cap.ampdu_factor = 0x3; |
798 | data->band.ht_cap.ampdu_density = 0x6; | |
799 | memset(&data->band.ht_cap.mcs, 0, | |
800 | sizeof(data->band.ht_cap.mcs)); | |
801 | data->band.ht_cap.mcs.rx_mask[0] = 0xff; | |
802 | data->band.ht_cap.mcs.rx_mask[1] = 0xff; | |
803 | data->band.ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED; | |
acc1e7a3 JM |
804 | hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &data->band; |
805 | ||
806 | err = ieee80211_register_hw(hw); | |
807 | if (err < 0) { | |
808 | printk(KERN_DEBUG "mac80211_hwsim: " | |
809 | "ieee80211_register_hw failed (%d)\n", err); | |
3a33cc10 | 810 | goto failed_hw; |
acc1e7a3 JM |
811 | } |
812 | ||
e174961c | 813 | printk(KERN_DEBUG "%s: hwaddr %pM registered\n", |
acc1e7a3 | 814 | wiphy_name(hw->wiphy), |
e174961c | 815 | hw->wiphy->perm_addr); |
acc1e7a3 | 816 | |
fc6971d4 JM |
817 | data->debugfs = debugfs_create_dir("hwsim", |
818 | hw->wiphy->debugfsdir); | |
819 | data->debugfs_ps = debugfs_create_file("ps", 0666, | |
820 | data->debugfs, data, | |
821 | &hwsim_fops_ps); | |
822 | ||
acc1e7a3 JM |
823 | setup_timer(&data->beacon_timer, mac80211_hwsim_beacon, |
824 | (unsigned long) hw); | |
0e057d73 JB |
825 | |
826 | list_add_tail(&data->list, &hwsim_radios); | |
acc1e7a3 JM |
827 | } |
828 | ||
829 | hwsim_mon = alloc_netdev(0, "hwsim%d", hwsim_mon_setup); | |
830 | if (hwsim_mon == NULL) | |
831 | goto failed; | |
832 | ||
833 | rtnl_lock(); | |
834 | ||
835 | err = dev_alloc_name(hwsim_mon, hwsim_mon->name); | |
3a33cc10 | 836 | if (err < 0) |
acc1e7a3 | 837 | goto failed_mon; |
3a33cc10 | 838 | |
acc1e7a3 JM |
839 | |
840 | err = register_netdevice(hwsim_mon); | |
841 | if (err < 0) | |
842 | goto failed_mon; | |
843 | ||
844 | rtnl_unlock(); | |
845 | ||
846 | return 0; | |
847 | ||
848 | failed_mon: | |
849 | rtnl_unlock(); | |
850 | free_netdev(hwsim_mon); | |
3a33cc10 IS |
851 | mac80211_hwsim_free(); |
852 | return err; | |
acc1e7a3 | 853 | |
3a33cc10 IS |
854 | failed_hw: |
855 | device_unregister(data->dev); | |
856 | failed_drvdata: | |
857 | ieee80211_free_hw(hw); | |
acc1e7a3 JM |
858 | failed: |
859 | mac80211_hwsim_free(); | |
860 | return err; | |
861 | } | |
862 | ||
863 | ||
864 | static void __exit exit_mac80211_hwsim(void) | |
865 | { | |
0e057d73 | 866 | printk(KERN_DEBUG "mac80211_hwsim: unregister radios\n"); |
acc1e7a3 JM |
867 | |
868 | unregister_netdev(hwsim_mon); | |
869 | mac80211_hwsim_free(); | |
870 | } | |
871 | ||
872 | ||
873 | module_init(init_mac80211_hwsim); | |
874 | module_exit(exit_mac80211_hwsim); |