mac80211: avoid NULL ptr deref when using WEP
[safe/jmp/linux-2.6] / net / mac80211 / driver-ops.h
1 #ifndef __MAC80211_DRIVER_OPS
2 #define __MAC80211_DRIVER_OPS
3
4 #include <net/mac80211.h>
5 #include "ieee80211_i.h"
6 #include "driver-trace.h"
7
8 static inline int drv_tx(struct ieee80211_local *local, struct sk_buff *skb)
9 {
10         return local->ops->tx(&local->hw, skb);
11 }
12
13 static inline int drv_start(struct ieee80211_local *local)
14 {
15         int ret;
16
17         might_sleep();
18
19         local->started = true;
20         smp_mb();
21         ret = local->ops->start(&local->hw);
22         trace_drv_start(local, ret);
23         return ret;
24 }
25
26 static inline void drv_stop(struct ieee80211_local *local)
27 {
28         might_sleep();
29
30         local->ops->stop(&local->hw);
31         trace_drv_stop(local);
32
33         /* sync away all work on the tasklet before clearing started */
34         tasklet_disable(&local->tasklet);
35         tasklet_enable(&local->tasklet);
36
37         barrier();
38
39         local->started = false;
40 }
41
42 static inline int drv_add_interface(struct ieee80211_local *local,
43                                     struct ieee80211_vif *vif)
44 {
45         int ret;
46
47         might_sleep();
48
49         ret = local->ops->add_interface(&local->hw, vif);
50         trace_drv_add_interface(local, vif_to_sdata(vif), ret);
51         return ret;
52 }
53
54 static inline void drv_remove_interface(struct ieee80211_local *local,
55                                         struct ieee80211_vif *vif)
56 {
57         might_sleep();
58
59         local->ops->remove_interface(&local->hw, vif);
60         trace_drv_remove_interface(local, vif_to_sdata(vif));
61 }
62
63 static inline int drv_config(struct ieee80211_local *local, u32 changed)
64 {
65         int ret;
66
67         might_sleep();
68
69         ret = local->ops->config(&local->hw, changed);
70         trace_drv_config(local, changed, ret);
71         return ret;
72 }
73
74 static inline void drv_bss_info_changed(struct ieee80211_local *local,
75                                         struct ieee80211_sub_if_data *sdata,
76                                         struct ieee80211_bss_conf *info,
77                                         u32 changed)
78 {
79         might_sleep();
80
81         if (local->ops->bss_info_changed)
82                 local->ops->bss_info_changed(&local->hw, &sdata->vif, info, changed);
83         trace_drv_bss_info_changed(local, sdata, info, changed);
84 }
85
86 static inline u64 drv_prepare_multicast(struct ieee80211_local *local,
87                                         int mc_count,
88                                         struct dev_addr_list *mc_list)
89 {
90         u64 ret = 0;
91
92         if (local->ops->prepare_multicast)
93                 ret = local->ops->prepare_multicast(&local->hw, mc_count,
94                                                     mc_list);
95
96         trace_drv_prepare_multicast(local, mc_count, ret);
97
98         return ret;
99 }
100
101 static inline void drv_configure_filter(struct ieee80211_local *local,
102                                         unsigned int changed_flags,
103                                         unsigned int *total_flags,
104                                         u64 multicast)
105 {
106         might_sleep();
107
108         local->ops->configure_filter(&local->hw, changed_flags, total_flags,
109                                      multicast);
110         trace_drv_configure_filter(local, changed_flags, total_flags,
111                                    multicast);
112 }
113
114 static inline int drv_set_tim(struct ieee80211_local *local,
115                               struct ieee80211_sta *sta, bool set)
116 {
117         int ret = 0;
118         if (local->ops->set_tim)
119                 ret = local->ops->set_tim(&local->hw, sta, set);
120         trace_drv_set_tim(local, sta, set, ret);
121         return ret;
122 }
123
124 static inline int drv_set_key(struct ieee80211_local *local,
125                               enum set_key_cmd cmd,
126                               struct ieee80211_sub_if_data *sdata,
127                               struct ieee80211_sta *sta,
128                               struct ieee80211_key_conf *key)
129 {
130         int ret;
131
132         might_sleep();
133
134         ret = local->ops->set_key(&local->hw, cmd, &sdata->vif, sta, key);
135         trace_drv_set_key(local, cmd, sdata, sta, key, ret);
136         return ret;
137 }
138
139 static inline void drv_update_tkip_key(struct ieee80211_local *local,
140                                        struct ieee80211_key_conf *conf,
141                                        const u8 *address, u32 iv32,
142                                        u16 *phase1key)
143 {
144         might_sleep();
145
146         if (local->ops->update_tkip_key)
147                 local->ops->update_tkip_key(&local->hw, conf, address,
148                                             iv32, phase1key);
149         trace_drv_update_tkip_key(local, conf, address, iv32);
150 }
151
152 static inline int drv_hw_scan(struct ieee80211_local *local,
153                               struct cfg80211_scan_request *req)
154 {
155         int ret;
156
157         might_sleep();
158
159         ret = local->ops->hw_scan(&local->hw, req);
160         trace_drv_hw_scan(local, req, ret);
161         return ret;
162 }
163
164 static inline void drv_sw_scan_start(struct ieee80211_local *local)
165 {
166         might_sleep();
167
168         if (local->ops->sw_scan_start)
169                 local->ops->sw_scan_start(&local->hw);
170         trace_drv_sw_scan_start(local);
171 }
172
173 static inline void drv_sw_scan_complete(struct ieee80211_local *local)
174 {
175         might_sleep();
176
177         if (local->ops->sw_scan_complete)
178                 local->ops->sw_scan_complete(&local->hw);
179         trace_drv_sw_scan_complete(local);
180 }
181
182 static inline int drv_get_stats(struct ieee80211_local *local,
183                                 struct ieee80211_low_level_stats *stats)
184 {
185         int ret = -EOPNOTSUPP;
186
187         might_sleep();
188
189         if (local->ops->get_stats)
190                 ret = local->ops->get_stats(&local->hw, stats);
191         trace_drv_get_stats(local, stats, ret);
192
193         return ret;
194 }
195
196 static inline void drv_get_tkip_seq(struct ieee80211_local *local,
197                                     u8 hw_key_idx, u32 *iv32, u16 *iv16)
198 {
199         if (local->ops->get_tkip_seq)
200                 local->ops->get_tkip_seq(&local->hw, hw_key_idx, iv32, iv16);
201         trace_drv_get_tkip_seq(local, hw_key_idx, iv32, iv16);
202 }
203
204 static inline int drv_set_rts_threshold(struct ieee80211_local *local,
205                                         u32 value)
206 {
207         int ret = 0;
208
209         might_sleep();
210
211         if (local->ops->set_rts_threshold)
212                 ret = local->ops->set_rts_threshold(&local->hw, value);
213         trace_drv_set_rts_threshold(local, value, ret);
214         return ret;
215 }
216
217 static inline int drv_set_coverage_class(struct ieee80211_local *local,
218                                          u8 value)
219 {
220         int ret = 0;
221         might_sleep();
222
223         if (local->ops->set_coverage_class)
224                 local->ops->set_coverage_class(&local->hw, value);
225         else
226                 ret = -EOPNOTSUPP;
227
228         trace_drv_set_coverage_class(local, value, ret);
229         return ret;
230 }
231
232 static inline void drv_sta_notify(struct ieee80211_local *local,
233                                   struct ieee80211_sub_if_data *sdata,
234                                   enum sta_notify_cmd cmd,
235                                   struct ieee80211_sta *sta)
236 {
237         if (local->ops->sta_notify)
238                 local->ops->sta_notify(&local->hw, &sdata->vif, cmd, sta);
239         trace_drv_sta_notify(local, sdata, cmd, sta);
240 }
241
242 static inline int drv_conf_tx(struct ieee80211_local *local, u16 queue,
243                               const struct ieee80211_tx_queue_params *params)
244 {
245         int ret = -EOPNOTSUPP;
246
247         might_sleep();
248
249         if (local->ops->conf_tx)
250                 ret = local->ops->conf_tx(&local->hw, queue, params);
251         trace_drv_conf_tx(local, queue, params, ret);
252         return ret;
253 }
254
255 static inline int drv_get_tx_stats(struct ieee80211_local *local,
256                                    struct ieee80211_tx_queue_stats *stats)
257 {
258         int ret = local->ops->get_tx_stats(&local->hw, stats);
259         trace_drv_get_tx_stats(local, stats, ret);
260         return ret;
261 }
262
263 static inline u64 drv_get_tsf(struct ieee80211_local *local)
264 {
265         u64 ret = -1ULL;
266
267         might_sleep();
268
269         if (local->ops->get_tsf)
270                 ret = local->ops->get_tsf(&local->hw);
271         trace_drv_get_tsf(local, ret);
272         return ret;
273 }
274
275 static inline void drv_set_tsf(struct ieee80211_local *local, u64 tsf)
276 {
277         might_sleep();
278
279         if (local->ops->set_tsf)
280                 local->ops->set_tsf(&local->hw, tsf);
281         trace_drv_set_tsf(local, tsf);
282 }
283
284 static inline void drv_reset_tsf(struct ieee80211_local *local)
285 {
286         might_sleep();
287
288         if (local->ops->reset_tsf)
289                 local->ops->reset_tsf(&local->hw);
290         trace_drv_reset_tsf(local);
291 }
292
293 static inline int drv_tx_last_beacon(struct ieee80211_local *local)
294 {
295         int ret = 1;
296
297         might_sleep();
298
299         if (local->ops->tx_last_beacon)
300                 ret = local->ops->tx_last_beacon(&local->hw);
301         trace_drv_tx_last_beacon(local, ret);
302         return ret;
303 }
304
305 static inline int drv_ampdu_action(struct ieee80211_local *local,
306                                    struct ieee80211_sub_if_data *sdata,
307                                    enum ieee80211_ampdu_mlme_action action,
308                                    struct ieee80211_sta *sta, u16 tid,
309                                    u16 *ssn)
310 {
311         int ret = -EOPNOTSUPP;
312         if (local->ops->ampdu_action)
313                 ret = local->ops->ampdu_action(&local->hw, &sdata->vif, action,
314                                                sta, tid, ssn);
315         trace_drv_ampdu_action(local, sdata, action, sta, tid, ssn, ret);
316         return ret;
317 }
318
319
320 static inline void drv_rfkill_poll(struct ieee80211_local *local)
321 {
322         might_sleep();
323
324         if (local->ops->rfkill_poll)
325                 local->ops->rfkill_poll(&local->hw);
326 }
327
328 static inline void drv_flush(struct ieee80211_local *local, bool drop)
329 {
330         might_sleep();
331
332         trace_drv_flush(local, drop);
333         if (local->ops->flush)
334                 local->ops->flush(&local->hw, drop);
335 }
336 #endif /* __MAC80211_DRIVER_OPS */