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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright 2015 Intel Deutschland GmbH
4 */
5#include <net/mac80211.h>
6#include "ieee80211_i.h"
7#include "trace.h"
8#include "driver-ops.h"
9
10int drv_start(struct ieee80211_local *local)
11{
12 int ret;
13
14 might_sleep();
15
16 if (WARN_ON(local->started))
17 return -EALREADY;
18
19 trace_drv_start(local);
20 local->started = true;
21 /* allow rx frames */
22 smp_mb();
23 ret = local->ops->start(&local->hw);
24 trace_drv_return_int(local, ret);
25
26 if (ret)
27 local->started = false;
28
29 return ret;
30}
31
32void drv_stop(struct ieee80211_local *local)
33{
34 might_sleep();
35
36 if (WARN_ON(!local->started))
37 return;
38
39 trace_drv_stop(local);
40 local->ops->stop(&local->hw);
41 trace_drv_return_void(local);
42
43 /* sync away all work on the tasklet before clearing started */
44 tasklet_disable(&local->tasklet);
45 tasklet_enable(&local->tasklet);
46
47 barrier();
48
49 local->started = false;
50}
51
52int drv_add_interface(struct ieee80211_local *local,
53 struct ieee80211_sub_if_data *sdata)
54{
55 int ret;
56
57 might_sleep();
58
59 if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
60 (sdata->vif.type == NL80211_IFTYPE_MONITOR &&
61 !ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) &&
62 !(sdata->u.mntr.flags & MONITOR_FLAG_ACTIVE))))
63 return -EINVAL;
64
65 trace_drv_add_interface(local, sdata);
66 ret = local->ops->add_interface(&local->hw, &sdata->vif);
67 trace_drv_return_int(local, ret);
68
69 if (ret == 0)
70 sdata->flags |= IEEE80211_SDATA_IN_DRIVER;
71
72 return ret;
73}
74
75int drv_change_interface(struct ieee80211_local *local,
76 struct ieee80211_sub_if_data *sdata,
77 enum nl80211_iftype type, bool p2p)
78{
79 int ret;
80
81 might_sleep();
82
83 if (!check_sdata_in_driver(sdata))
84 return -EIO;
85
86 trace_drv_change_interface(local, sdata, type, p2p);
87 ret = local->ops->change_interface(&local->hw, &sdata->vif, type, p2p);
88 trace_drv_return_int(local, ret);
89 return ret;
90}
91
92void drv_remove_interface(struct ieee80211_local *local,
93 struct ieee80211_sub_if_data *sdata)
94{
95 might_sleep();
96
97 if (!check_sdata_in_driver(sdata))
98 return;
99
100 trace_drv_remove_interface(local, sdata);
101 local->ops->remove_interface(&local->hw, &sdata->vif);
102 sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER;
103 trace_drv_return_void(local);
104}
105
106__must_check
107int drv_sta_state(struct ieee80211_local *local,
108 struct ieee80211_sub_if_data *sdata,
109 struct sta_info *sta,
110 enum ieee80211_sta_state old_state,
111 enum ieee80211_sta_state new_state)
112{
113 int ret = 0;
114
115 might_sleep();
116
117 sdata = get_bss_sdata(sdata);
118 if (!check_sdata_in_driver(sdata))
119 return -EIO;
120
121 trace_drv_sta_state(local, sdata, &sta->sta, old_state, new_state);
122 if (local->ops->sta_state) {
123 ret = local->ops->sta_state(&local->hw, &sdata->vif, &sta->sta,
124 old_state, new_state);
125 } else if (old_state == IEEE80211_STA_AUTH &&
126 new_state == IEEE80211_STA_ASSOC) {
127 ret = drv_sta_add(local, sdata, &sta->sta);
128 if (ret == 0)
129 sta->uploaded = true;
130 } else if (old_state == IEEE80211_STA_ASSOC &&
131 new_state == IEEE80211_STA_AUTH) {
132 drv_sta_remove(local, sdata, &sta->sta);
133 }
134 trace_drv_return_int(local, ret);
135 return ret;
136}
137
138__must_check
139int drv_sta_set_txpwr(struct ieee80211_local *local,
140 struct ieee80211_sub_if_data *sdata,
141 struct sta_info *sta)
142{
143 int ret = -EOPNOTSUPP;
144
145 might_sleep();
146
147 sdata = get_bss_sdata(sdata);
148 if (!check_sdata_in_driver(sdata))
149 return -EIO;
150
151 trace_drv_sta_set_txpwr(local, sdata, &sta->sta);
152 if (local->ops->sta_set_txpwr)
153 ret = local->ops->sta_set_txpwr(&local->hw, &sdata->vif,
154 &sta->sta);
155 trace_drv_return_int(local, ret);
156 return ret;
157}
158
159void drv_sta_rc_update(struct ieee80211_local *local,
160 struct ieee80211_sub_if_data *sdata,
161 struct ieee80211_sta *sta, u32 changed)
162{
163 sdata = get_bss_sdata(sdata);
164 if (!check_sdata_in_driver(sdata))
165 return;
166
167 WARN_ON(changed & IEEE80211_RC_SUPP_RATES_CHANGED &&
168 (sdata->vif.type != NL80211_IFTYPE_ADHOC &&
169 sdata->vif.type != NL80211_IFTYPE_MESH_POINT));
170
171 trace_drv_sta_rc_update(local, sdata, sta, changed);
172 if (local->ops->sta_rc_update)
173 local->ops->sta_rc_update(&local->hw, &sdata->vif,
174 sta, changed);
175
176 trace_drv_return_void(local);
177}
178
179int drv_conf_tx(struct ieee80211_local *local,
180 struct ieee80211_sub_if_data *sdata, u16 ac,
181 const struct ieee80211_tx_queue_params *params)
182{
183 int ret = -EOPNOTSUPP;
184
185 might_sleep();
186
187 if (!check_sdata_in_driver(sdata))
188 return -EIO;
189
190 if (params->cw_min == 0 || params->cw_min > params->cw_max) {
191 /*
192 * If we can't configure hardware anyway, don't warn. We may
193 * never have initialized the CW parameters.
194 */
195 WARN_ONCE(local->ops->conf_tx,
196 "%s: invalid CW_min/CW_max: %d/%d\n",
197 sdata->name, params->cw_min, params->cw_max);
198 return -EINVAL;
199 }
200
201 trace_drv_conf_tx(local, sdata, ac, params);
202 if (local->ops->conf_tx)
203 ret = local->ops->conf_tx(&local->hw, &sdata->vif,
204 ac, params);
205 trace_drv_return_int(local, ret);
206 return ret;
207}
208
209u64 drv_get_tsf(struct ieee80211_local *local,
210 struct ieee80211_sub_if_data *sdata)
211{
212 u64 ret = -1ULL;
213
214 might_sleep();
215
216 if (!check_sdata_in_driver(sdata))
217 return ret;
218
219 trace_drv_get_tsf(local, sdata);
220 if (local->ops->get_tsf)
221 ret = local->ops->get_tsf(&local->hw, &sdata->vif);
222 trace_drv_return_u64(local, ret);
223 return ret;
224}
225
226void drv_set_tsf(struct ieee80211_local *local,
227 struct ieee80211_sub_if_data *sdata,
228 u64 tsf)
229{
230 might_sleep();
231
232 if (!check_sdata_in_driver(sdata))
233 return;
234
235 trace_drv_set_tsf(local, sdata, tsf);
236 if (local->ops->set_tsf)
237 local->ops->set_tsf(&local->hw, &sdata->vif, tsf);
238 trace_drv_return_void(local);
239}
240
241void drv_offset_tsf(struct ieee80211_local *local,
242 struct ieee80211_sub_if_data *sdata,
243 s64 offset)
244{
245 might_sleep();
246
247 if (!check_sdata_in_driver(sdata))
248 return;
249
250 trace_drv_offset_tsf(local, sdata, offset);
251 if (local->ops->offset_tsf)
252 local->ops->offset_tsf(&local->hw, &sdata->vif, offset);
253 trace_drv_return_void(local);
254}
255
256void drv_reset_tsf(struct ieee80211_local *local,
257 struct ieee80211_sub_if_data *sdata)
258{
259 might_sleep();
260
261 if (!check_sdata_in_driver(sdata))
262 return;
263
264 trace_drv_reset_tsf(local, sdata);
265 if (local->ops->reset_tsf)
266 local->ops->reset_tsf(&local->hw, &sdata->vif);
267 trace_drv_return_void(local);
268}
269
270int drv_switch_vif_chanctx(struct ieee80211_local *local,
271 struct ieee80211_vif_chanctx_switch *vifs,
272 int n_vifs, enum ieee80211_chanctx_switch_mode mode)
273{
274 int ret = 0;
275 int i;
276
277 might_sleep();
278
279 if (!local->ops->switch_vif_chanctx)
280 return -EOPNOTSUPP;
281
282 for (i = 0; i < n_vifs; i++) {
283 struct ieee80211_chanctx *new_ctx =
284 container_of(vifs[i].new_ctx,
285 struct ieee80211_chanctx,
286 conf);
287 struct ieee80211_chanctx *old_ctx =
288 container_of(vifs[i].old_ctx,
289 struct ieee80211_chanctx,
290 conf);
291
292 WARN_ON_ONCE(!old_ctx->driver_present);
293 WARN_ON_ONCE((mode == CHANCTX_SWMODE_SWAP_CONTEXTS &&
294 new_ctx->driver_present) ||
295 (mode == CHANCTX_SWMODE_REASSIGN_VIF &&
296 !new_ctx->driver_present));
297 }
298
299 trace_drv_switch_vif_chanctx(local, vifs, n_vifs, mode);
300 ret = local->ops->switch_vif_chanctx(&local->hw,
301 vifs, n_vifs, mode);
302 trace_drv_return_int(local, ret);
303
304 if (!ret && mode == CHANCTX_SWMODE_SWAP_CONTEXTS) {
305 for (i = 0; i < n_vifs; i++) {
306 struct ieee80211_chanctx *new_ctx =
307 container_of(vifs[i].new_ctx,
308 struct ieee80211_chanctx,
309 conf);
310 struct ieee80211_chanctx *old_ctx =
311 container_of(vifs[i].old_ctx,
312 struct ieee80211_chanctx,
313 conf);
314
315 new_ctx->driver_present = true;
316 old_ctx->driver_present = false;
317 }
318 }
319
320 return ret;
321}
322
323int drv_ampdu_action(struct ieee80211_local *local,
324 struct ieee80211_sub_if_data *sdata,
325 struct ieee80211_ampdu_params *params)
326{
327 int ret = -EOPNOTSUPP;
328
329 might_sleep();
330
331 sdata = get_bss_sdata(sdata);
332 if (!check_sdata_in_driver(sdata))
333 return -EIO;
334
335 trace_drv_ampdu_action(local, sdata, params);
336
337 if (local->ops->ampdu_action)
338 ret = local->ops->ampdu_action(&local->hw, &sdata->vif, params);
339
340 trace_drv_return_int(local, ret);
341
342 return ret;
343}