Commit | Line | Data |
---|---|---|
727da60b | 1 | /* |
968a76ce EP |
2 | * Copyright 2015 Intel Deutschland GmbH |
3 | * | |
727da60b DV |
4 | * This program is free software; you can redistribute it and/or modify |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | #include <net/mac80211.h> | |
9 | #include "ieee80211_i.h" | |
10 | #include "trace.h" | |
11 | #include "driver-ops.h" | |
12 | ||
968a76ce EP |
13 | int drv_start(struct ieee80211_local *local) |
14 | { | |
15 | int ret; | |
16 | ||
17 | might_sleep(); | |
18 | ||
19 | if (WARN_ON(local->started)) | |
20 | return -EALREADY; | |
21 | ||
22 | trace_drv_start(local); | |
23 | local->started = true; | |
24 | /* allow rx frames */ | |
25 | smp_mb(); | |
26 | ret = local->ops->start(&local->hw); | |
27 | trace_drv_return_int(local, ret); | |
28 | ||
29 | if (ret) | |
30 | local->started = false; | |
31 | ||
32 | return ret; | |
33 | } | |
34 | ||
35 | void drv_stop(struct ieee80211_local *local) | |
36 | { | |
37 | might_sleep(); | |
38 | ||
39 | if (WARN_ON(!local->started)) | |
40 | return; | |
41 | ||
42 | trace_drv_stop(local); | |
43 | local->ops->stop(&local->hw); | |
44 | trace_drv_return_void(local); | |
45 | ||
46 | /* sync away all work on the tasklet before clearing started */ | |
47 | tasklet_disable(&local->tasklet); | |
48 | tasklet_enable(&local->tasklet); | |
49 | ||
50 | barrier(); | |
51 | ||
52 | local->started = false; | |
53 | } | |
54 | ||
9aae296a DV |
55 | int drv_add_interface(struct ieee80211_local *local, |
56 | struct ieee80211_sub_if_data *sdata) | |
57 | { | |
58 | int ret; | |
59 | ||
60 | might_sleep(); | |
61 | ||
62 | if (WARN_ON(sdata->vif.type == NL80211_IFTYPE_AP_VLAN || | |
63 | (sdata->vif.type == NL80211_IFTYPE_MONITOR && | |
64 | !ieee80211_hw_check(&local->hw, WANT_MONITOR_VIF) && | |
65 | !(sdata->u.mntr_flags & MONITOR_FLAG_ACTIVE)))) | |
66 | return -EINVAL; | |
67 | ||
68 | trace_drv_add_interface(local, sdata); | |
69 | ret = local->ops->add_interface(&local->hw, &sdata->vif); | |
70 | trace_drv_return_int(local, ret); | |
71 | ||
72 | if (ret == 0) | |
73 | sdata->flags |= IEEE80211_SDATA_IN_DRIVER; | |
74 | ||
75 | return ret; | |
76 | } | |
77 | ||
78 | int drv_change_interface(struct ieee80211_local *local, | |
79 | struct ieee80211_sub_if_data *sdata, | |
80 | enum nl80211_iftype type, bool p2p) | |
81 | { | |
82 | int ret; | |
83 | ||
84 | might_sleep(); | |
85 | ||
86 | if (!check_sdata_in_driver(sdata)) | |
87 | return -EIO; | |
88 | ||
89 | trace_drv_change_interface(local, sdata, type, p2p); | |
90 | ret = local->ops->change_interface(&local->hw, &sdata->vif, type, p2p); | |
91 | trace_drv_return_int(local, ret); | |
92 | return ret; | |
93 | } | |
94 | ||
95 | void drv_remove_interface(struct ieee80211_local *local, | |
96 | struct ieee80211_sub_if_data *sdata) | |
97 | { | |
98 | might_sleep(); | |
99 | ||
100 | if (!check_sdata_in_driver(sdata)) | |
101 | return; | |
102 | ||
103 | trace_drv_remove_interface(local, sdata); | |
104 | local->ops->remove_interface(&local->hw, &sdata->vif); | |
105 | sdata->flags &= ~IEEE80211_SDATA_IN_DRIVER; | |
106 | trace_drv_return_void(local); | |
107 | } | |
108 | ||
727da60b DV |
109 | __must_check |
110 | int drv_sta_state(struct ieee80211_local *local, | |
111 | struct ieee80211_sub_if_data *sdata, | |
112 | struct sta_info *sta, | |
113 | enum ieee80211_sta_state old_state, | |
114 | enum ieee80211_sta_state new_state) | |
115 | { | |
116 | int ret = 0; | |
117 | ||
118 | might_sleep(); | |
119 | ||
120 | sdata = get_bss_sdata(sdata); | |
121 | if (!check_sdata_in_driver(sdata)) | |
122 | return -EIO; | |
123 | ||
124 | trace_drv_sta_state(local, sdata, &sta->sta, old_state, new_state); | |
125 | if (local->ops->sta_state) { | |
126 | ret = local->ops->sta_state(&local->hw, &sdata->vif, &sta->sta, | |
127 | old_state, new_state); | |
128 | } else if (old_state == IEEE80211_STA_AUTH && | |
129 | new_state == IEEE80211_STA_ASSOC) { | |
130 | ret = drv_sta_add(local, sdata, &sta->sta); | |
131 | if (ret == 0) | |
132 | sta->uploaded = true; | |
133 | } else if (old_state == IEEE80211_STA_ASSOC && | |
134 | new_state == IEEE80211_STA_AUTH) { | |
135 | drv_sta_remove(local, sdata, &sta->sta); | |
136 | } | |
137 | trace_drv_return_int(local, ret); | |
138 | return ret; | |
139 | } | |
b23dcd4a | 140 | |
4fbd572c DV |
141 | void drv_sta_rc_update(struct ieee80211_local *local, |
142 | struct ieee80211_sub_if_data *sdata, | |
143 | struct ieee80211_sta *sta, u32 changed) | |
144 | { | |
145 | sdata = get_bss_sdata(sdata); | |
146 | if (!check_sdata_in_driver(sdata)) | |
147 | return; | |
148 | ||
149 | WARN_ON(changed & IEEE80211_RC_SUPP_RATES_CHANGED && | |
150 | (sdata->vif.type != NL80211_IFTYPE_ADHOC && | |
151 | sdata->vif.type != NL80211_IFTYPE_MESH_POINT)); | |
152 | ||
153 | trace_drv_sta_rc_update(local, sdata, sta, changed); | |
154 | if (local->ops->sta_rc_update) | |
155 | local->ops->sta_rc_update(&local->hw, &sdata->vif, | |
156 | sta, changed); | |
157 | ||
158 | trace_drv_return_void(local); | |
159 | } | |
160 | ||
b23dcd4a DV |
161 | int drv_conf_tx(struct ieee80211_local *local, |
162 | struct ieee80211_sub_if_data *sdata, u16 ac, | |
163 | const struct ieee80211_tx_queue_params *params) | |
164 | { | |
165 | int ret = -EOPNOTSUPP; | |
166 | ||
167 | might_sleep(); | |
168 | ||
169 | if (!check_sdata_in_driver(sdata)) | |
170 | return -EIO; | |
171 | ||
172 | if (WARN_ONCE(params->cw_min == 0 || | |
173 | params->cw_min > params->cw_max, | |
174 | "%s: invalid CW_min/CW_max: %d/%d\n", | |
175 | sdata->name, params->cw_min, params->cw_max)) | |
176 | return -EINVAL; | |
177 | ||
178 | trace_drv_conf_tx(local, sdata, ac, params); | |
179 | if (local->ops->conf_tx) | |
180 | ret = local->ops->conf_tx(&local->hw, &sdata->vif, | |
181 | ac, params); | |
182 | trace_drv_return_int(local, ret); | |
183 | return ret; | |
184 | } | |
42677ed3 | 185 | |
416eb9fc DV |
186 | u64 drv_get_tsf(struct ieee80211_local *local, |
187 | struct ieee80211_sub_if_data *sdata) | |
188 | { | |
189 | u64 ret = -1ULL; | |
190 | ||
191 | might_sleep(); | |
192 | ||
193 | if (!check_sdata_in_driver(sdata)) | |
194 | return ret; | |
195 | ||
196 | trace_drv_get_tsf(local, sdata); | |
197 | if (local->ops->get_tsf) | |
198 | ret = local->ops->get_tsf(&local->hw, &sdata->vif); | |
199 | trace_drv_return_u64(local, ret); | |
200 | return ret; | |
201 | } | |
202 | ||
203 | void drv_set_tsf(struct ieee80211_local *local, | |
204 | struct ieee80211_sub_if_data *sdata, | |
205 | u64 tsf) | |
206 | { | |
207 | might_sleep(); | |
208 | ||
209 | if (!check_sdata_in_driver(sdata)) | |
210 | return; | |
211 | ||
212 | trace_drv_set_tsf(local, sdata, tsf); | |
213 | if (local->ops->set_tsf) | |
214 | local->ops->set_tsf(&local->hw, &sdata->vif, tsf); | |
215 | trace_drv_return_void(local); | |
216 | } | |
217 | ||
218 | void drv_reset_tsf(struct ieee80211_local *local, | |
219 | struct ieee80211_sub_if_data *sdata) | |
220 | { | |
221 | might_sleep(); | |
222 | ||
223 | if (!check_sdata_in_driver(sdata)) | |
224 | return; | |
225 | ||
226 | trace_drv_reset_tsf(local, sdata); | |
227 | if (local->ops->reset_tsf) | |
228 | local->ops->reset_tsf(&local->hw, &sdata->vif); | |
229 | trace_drv_return_void(local); | |
230 | } | |
231 | ||
42677ed3 DV |
232 | int drv_switch_vif_chanctx(struct ieee80211_local *local, |
233 | struct ieee80211_vif_chanctx_switch *vifs, | |
234 | int n_vifs, enum ieee80211_chanctx_switch_mode mode) | |
235 | { | |
236 | int ret = 0; | |
237 | int i; | |
238 | ||
dcae9e02 C |
239 | might_sleep(); |
240 | ||
42677ed3 DV |
241 | if (!local->ops->switch_vif_chanctx) |
242 | return -EOPNOTSUPP; | |
243 | ||
244 | for (i = 0; i < n_vifs; i++) { | |
245 | struct ieee80211_chanctx *new_ctx = | |
246 | container_of(vifs[i].new_ctx, | |
247 | struct ieee80211_chanctx, | |
248 | conf); | |
249 | struct ieee80211_chanctx *old_ctx = | |
250 | container_of(vifs[i].old_ctx, | |
251 | struct ieee80211_chanctx, | |
252 | conf); | |
253 | ||
254 | WARN_ON_ONCE(!old_ctx->driver_present); | |
255 | WARN_ON_ONCE((mode == CHANCTX_SWMODE_SWAP_CONTEXTS && | |
256 | new_ctx->driver_present) || | |
257 | (mode == CHANCTX_SWMODE_REASSIGN_VIF && | |
258 | !new_ctx->driver_present)); | |
259 | } | |
260 | ||
261 | trace_drv_switch_vif_chanctx(local, vifs, n_vifs, mode); | |
262 | ret = local->ops->switch_vif_chanctx(&local->hw, | |
263 | vifs, n_vifs, mode); | |
264 | trace_drv_return_int(local, ret); | |
265 | ||
266 | if (!ret && mode == CHANCTX_SWMODE_SWAP_CONTEXTS) { | |
267 | for (i = 0; i < n_vifs; i++) { | |
268 | struct ieee80211_chanctx *new_ctx = | |
269 | container_of(vifs[i].new_ctx, | |
270 | struct ieee80211_chanctx, | |
271 | conf); | |
272 | struct ieee80211_chanctx *old_ctx = | |
273 | container_of(vifs[i].old_ctx, | |
274 | struct ieee80211_chanctx, | |
275 | conf); | |
276 | ||
277 | new_ctx->driver_present = true; | |
278 | old_ctx->driver_present = false; | |
279 | } | |
280 | } | |
281 | ||
282 | return ret; | |
283 | } | |
6db96838 DV |
284 | |
285 | int drv_ampdu_action(struct ieee80211_local *local, | |
286 | struct ieee80211_sub_if_data *sdata, | |
50ea05ef | 287 | struct ieee80211_ampdu_params *params) |
6db96838 DV |
288 | { |
289 | int ret = -EOPNOTSUPP; | |
290 | ||
291 | might_sleep(); | |
292 | ||
293 | sdata = get_bss_sdata(sdata); | |
294 | if (!check_sdata_in_driver(sdata)) | |
295 | return -EIO; | |
296 | ||
50ea05ef | 297 | trace_drv_ampdu_action(local, sdata, params); |
6db96838 DV |
298 | |
299 | if (local->ops->ampdu_action) | |
50ea05ef | 300 | ret = local->ops->ampdu_action(&local->hw, &sdata->vif, params); |
6db96838 DV |
301 | |
302 | trace_drv_return_int(local, ret); | |
303 | ||
304 | return ret; | |
305 | } |