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8ca151b5 JB |
1 | /****************************************************************************** |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
51368bf7 | 8 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 9 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
8ca151b5 JB |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of version 2 of the GNU General Public License as | |
13 | * published by the Free Software Foundation. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but | |
16 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
18 | * General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
23 | * USA | |
24 | * | |
25 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 26 | * in the file called COPYING. |
8ca151b5 JB |
27 | * |
28 | * Contact Information: | |
29 | * Intel Linux Wireless <ilw@linux.intel.com> | |
30 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
31 | * | |
32 | * BSD LICENSE | |
33 | * | |
51368bf7 | 34 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8b4139dc | 35 | * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH |
8ca151b5 JB |
36 | * All rights reserved. |
37 | * | |
38 | * Redistribution and use in source and binary forms, with or without | |
39 | * modification, are permitted provided that the following conditions | |
40 | * are met: | |
41 | * | |
42 | * * Redistributions of source code must retain the above copyright | |
43 | * notice, this list of conditions and the following disclaimer. | |
44 | * * Redistributions in binary form must reproduce the above copyright | |
45 | * notice, this list of conditions and the following disclaimer in | |
46 | * the documentation and/or other materials provided with the | |
47 | * distribution. | |
48 | * * Neither the name Intel Corporation nor the names of its | |
49 | * contributors may be used to endorse or promote products derived | |
50 | * from this software without specific prior written permission. | |
51 | * | |
52 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
53 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
54 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
55 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
56 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
57 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
58 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
59 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
60 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
61 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
62 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
63 | * | |
64 | *****************************************************************************/ | |
65 | ||
f444eb10 | 66 | #include <linux/etherdevice.h> |
f0c2646a | 67 | #include <linux/ip.h> |
debff618 | 68 | #include <linux/fs.h> |
8ca151b5 JB |
69 | #include <net/cfg80211.h> |
70 | #include <net/ipv6.h> | |
f0c2646a | 71 | #include <net/tcp.h> |
f7fc5989 | 72 | #include <net/addrconf.h> |
8ca151b5 JB |
73 | #include "iwl-modparams.h" |
74 | #include "fw-api.h" | |
75 | #include "mvm.h" | |
76 | ||
77 | void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, | |
78 | struct ieee80211_vif *vif, | |
79 | struct cfg80211_gtk_rekey_data *data) | |
80 | { | |
81 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
82 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
83 | ||
84 | if (iwlwifi_mod_params.sw_crypto) | |
85 | return; | |
86 | ||
87 | mutex_lock(&mvm->mutex); | |
88 | ||
89 | memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN); | |
90 | memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN); | |
91 | mvmvif->rekey_data.replay_ctr = | |
92 | cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr)); | |
93 | mvmvif->rekey_data.valid = true; | |
94 | ||
95 | mutex_unlock(&mvm->mutex); | |
96 | } | |
97 | ||
98 | #if IS_ENABLED(CONFIG_IPV6) | |
99 | void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, | |
100 | struct ieee80211_vif *vif, | |
101 | struct inet6_dev *idev) | |
102 | { | |
103 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
104 | struct inet6_ifaddr *ifa; | |
105 | int idx = 0; | |
106 | ||
a3777e0f | 107 | read_lock_bh(&idev->lock); |
8ca151b5 JB |
108 | list_for_each_entry(ifa, &idev->addr_list, if_list) { |
109 | mvmvif->target_ipv6_addrs[idx] = ifa->addr; | |
110 | idx++; | |
5369d6c1 | 111 | if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) |
8ca151b5 JB |
112 | break; |
113 | } | |
a3777e0f | 114 | read_unlock_bh(&idev->lock); |
8ca151b5 JB |
115 | |
116 | mvmvif->num_target_ipv6_addrs = idx; | |
117 | } | |
118 | #endif | |
119 | ||
120 | void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, | |
121 | struct ieee80211_vif *vif, int idx) | |
122 | { | |
123 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
124 | ||
125 | mvmvif->tx_key_idx = idx; | |
126 | } | |
127 | ||
128 | static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) | |
129 | { | |
130 | int i; | |
131 | ||
132 | for (i = 0; i < IWL_P1K_SIZE; i++) | |
133 | out[i] = cpu_to_le16(p1k[i]); | |
134 | } | |
135 | ||
136 | struct wowlan_key_data { | |
137 | struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc; | |
138 | struct iwl_wowlan_tkip_params_cmd *tkip; | |
139 | bool error, use_rsc_tsc, use_tkip; | |
5312e54d | 140 | int wep_key_idx; |
8ca151b5 JB |
141 | }; |
142 | ||
143 | static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, | |
144 | struct ieee80211_vif *vif, | |
145 | struct ieee80211_sta *sta, | |
146 | struct ieee80211_key_conf *key, | |
147 | void *_data) | |
148 | { | |
149 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
150 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
151 | struct wowlan_key_data *data = _data; | |
152 | struct aes_sc *aes_sc, *aes_tx_sc = NULL; | |
153 | struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; | |
154 | struct iwl_p1k_cache *rx_p1ks; | |
155 | u8 *rx_mic_key; | |
156 | struct ieee80211_key_seq seq; | |
157 | u32 cur_rx_iv32 = 0; | |
158 | u16 p1k[IWL_P1K_SIZE]; | |
159 | int ret, i; | |
160 | ||
161 | mutex_lock(&mvm->mutex); | |
162 | ||
163 | switch (key->cipher) { | |
164 | case WLAN_CIPHER_SUITE_WEP40: | |
165 | case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ | |
166 | struct { | |
167 | struct iwl_mvm_wep_key_cmd wep_key_cmd; | |
168 | struct iwl_mvm_wep_key wep_key; | |
169 | } __packed wkc = { | |
170 | .wep_key_cmd.mac_id_n_color = | |
171 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
172 | mvmvif->color)), | |
173 | .wep_key_cmd.num_keys = 1, | |
174 | /* firmware sets STA_KEY_FLG_WEP_13BYTES */ | |
175 | .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, | |
176 | .wep_key.key_index = key->keyidx, | |
177 | .wep_key.key_size = key->keylen, | |
178 | }; | |
179 | ||
180 | /* | |
181 | * This will fail -- the key functions don't set support | |
182 | * pairwise WEP keys. However, that's better than silently | |
183 | * failing WoWLAN. Or maybe not? | |
184 | */ | |
185 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) | |
186 | break; | |
187 | ||
188 | memcpy(&wkc.wep_key.key[3], key->key, key->keylen); | |
189 | if (key->keyidx == mvmvif->tx_key_idx) { | |
190 | /* TX key must be at offset 0 */ | |
191 | wkc.wep_key.key_offset = 0; | |
192 | } else { | |
193 | /* others start at 1 */ | |
5312e54d JB |
194 | data->wep_key_idx++; |
195 | wkc.wep_key.key_offset = data->wep_key_idx; | |
8ca151b5 JB |
196 | } |
197 | ||
a1022927 | 198 | ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc); |
8ca151b5 JB |
199 | data->error = ret != 0; |
200 | ||
f444eb10 JB |
201 | mvm->ptk_ivlen = key->iv_len; |
202 | mvm->ptk_icvlen = key->icv_len; | |
203 | mvm->gtk_ivlen = key->iv_len; | |
204 | mvm->gtk_icvlen = key->icv_len; | |
205 | ||
8ca151b5 JB |
206 | /* don't upload key again */ |
207 | goto out_unlock; | |
208 | } | |
209 | default: | |
210 | data->error = true; | |
211 | goto out_unlock; | |
212 | case WLAN_CIPHER_SUITE_AES_CMAC: | |
213 | /* | |
214 | * Ignore CMAC keys -- the WoWLAN firmware doesn't support them | |
215 | * but we also shouldn't abort suspend due to that. It does have | |
216 | * support for the IGTK key renewal, but doesn't really use the | |
217 | * IGTK for anything. This means we could spuriously wake up or | |
218 | * be deauthenticated, but that was considered acceptable. | |
219 | */ | |
220 | goto out_unlock; | |
221 | case WLAN_CIPHER_SUITE_TKIP: | |
222 | if (sta) { | |
223 | tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; | |
224 | tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc; | |
225 | ||
226 | rx_p1ks = data->tkip->rx_uni; | |
227 | ||
228 | ieee80211_get_key_tx_seq(key, &seq); | |
229 | tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16); | |
230 | tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32); | |
231 | ||
232 | ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k); | |
233 | iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k); | |
234 | ||
235 | memcpy(data->tkip->mic_keys.tx, | |
236 | &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], | |
237 | IWL_MIC_KEY_SIZE); | |
238 | ||
239 | rx_mic_key = data->tkip->mic_keys.rx_unicast; | |
240 | } else { | |
241 | tkip_sc = | |
242 | data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; | |
243 | rx_p1ks = data->tkip->rx_multi; | |
244 | rx_mic_key = data->tkip->mic_keys.rx_mcast; | |
245 | } | |
246 | ||
247 | /* | |
248 | * For non-QoS this relies on the fact that both the uCode and | |
249 | * mac80211 use TID 0 (as they need to to avoid replay attacks) | |
250 | * for checking the IV in the frames. | |
251 | */ | |
252 | for (i = 0; i < IWL_NUM_RSC; i++) { | |
253 | ieee80211_get_key_rx_seq(key, i, &seq); | |
254 | tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); | |
255 | tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); | |
256 | /* wrapping isn't allowed, AP must rekey */ | |
257 | if (seq.tkip.iv32 > cur_rx_iv32) | |
258 | cur_rx_iv32 = seq.tkip.iv32; | |
259 | } | |
260 | ||
261 | ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, | |
262 | cur_rx_iv32, p1k); | |
263 | iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); | |
264 | ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, | |
265 | cur_rx_iv32 + 1, p1k); | |
266 | iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); | |
267 | ||
268 | memcpy(rx_mic_key, | |
269 | &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], | |
270 | IWL_MIC_KEY_SIZE); | |
271 | ||
272 | data->use_tkip = true; | |
273 | data->use_rsc_tsc = true; | |
274 | break; | |
275 | case WLAN_CIPHER_SUITE_CCMP: | |
276 | if (sta) { | |
277 | u8 *pn = seq.ccmp.pn; | |
278 | ||
279 | aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; | |
280 | aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc; | |
281 | ||
282 | ieee80211_get_key_tx_seq(key, &seq); | |
283 | aes_tx_sc->pn = cpu_to_le64((u64)pn[5] | | |
284 | ((u64)pn[4] << 8) | | |
285 | ((u64)pn[3] << 16) | | |
286 | ((u64)pn[2] << 24) | | |
287 | ((u64)pn[1] << 32) | | |
288 | ((u64)pn[0] << 40)); | |
289 | } else { | |
290 | aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; | |
291 | } | |
292 | ||
293 | /* | |
294 | * For non-QoS this relies on the fact that both the uCode and | |
295 | * mac80211 use TID 0 for checking the IV in the frames. | |
296 | */ | |
297 | for (i = 0; i < IWL_NUM_RSC; i++) { | |
298 | u8 *pn = seq.ccmp.pn; | |
299 | ||
300 | ieee80211_get_key_rx_seq(key, i, &seq); | |
301 | aes_sc->pn = cpu_to_le64((u64)pn[5] | | |
302 | ((u64)pn[4] << 8) | | |
303 | ((u64)pn[3] << 16) | | |
304 | ((u64)pn[2] << 24) | | |
305 | ((u64)pn[1] << 32) | | |
306 | ((u64)pn[0] << 40)); | |
307 | } | |
308 | data->use_rsc_tsc = true; | |
309 | break; | |
310 | } | |
311 | ||
312 | /* | |
313 | * The D3 firmware hardcodes the key offset 0 as the key it uses | |
314 | * to transmit packets to the AP, i.e. the PTK. | |
315 | */ | |
316 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { | |
317 | key->hw_key_idx = 0; | |
f444eb10 JB |
318 | mvm->ptk_ivlen = key->iv_len; |
319 | mvm->ptk_icvlen = key->icv_len; | |
8ca151b5 | 320 | } else { |
5312e54d JB |
321 | /* |
322 | * firmware only supports TSC/RSC for a single key, | |
323 | * so if there are multiple keep overwriting them | |
324 | * with new ones -- this relies on mac80211 doing | |
325 | * list_add_tail(). | |
326 | */ | |
327 | key->hw_key_idx = 1; | |
f444eb10 JB |
328 | mvm->gtk_ivlen = key->iv_len; |
329 | mvm->gtk_icvlen = key->icv_len; | |
8ca151b5 JB |
330 | } |
331 | ||
332 | ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, true); | |
333 | data->error = ret != 0; | |
334 | out_unlock: | |
335 | mutex_unlock(&mvm->mutex); | |
336 | } | |
337 | ||
338 | static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, | |
339 | struct cfg80211_wowlan *wowlan) | |
340 | { | |
341 | struct iwl_wowlan_patterns_cmd *pattern_cmd; | |
342 | struct iwl_host_cmd cmd = { | |
343 | .id = WOWLAN_PATTERNS, | |
344 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
8ca151b5 JB |
345 | }; |
346 | int i, err; | |
347 | ||
348 | if (!wowlan->n_patterns) | |
349 | return 0; | |
350 | ||
351 | cmd.len[0] = sizeof(*pattern_cmd) + | |
352 | wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern); | |
353 | ||
354 | pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); | |
355 | if (!pattern_cmd) | |
356 | return -ENOMEM; | |
357 | ||
358 | pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); | |
359 | ||
360 | for (i = 0; i < wowlan->n_patterns; i++) { | |
361 | int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); | |
362 | ||
363 | memcpy(&pattern_cmd->patterns[i].mask, | |
364 | wowlan->patterns[i].mask, mask_len); | |
365 | memcpy(&pattern_cmd->patterns[i].pattern, | |
366 | wowlan->patterns[i].pattern, | |
367 | wowlan->patterns[i].pattern_len); | |
368 | pattern_cmd->patterns[i].mask_size = mask_len; | |
369 | pattern_cmd->patterns[i].pattern_size = | |
370 | wowlan->patterns[i].pattern_len; | |
371 | } | |
372 | ||
373 | cmd.data[0] = pattern_cmd; | |
374 | err = iwl_mvm_send_cmd(mvm, &cmd); | |
375 | kfree(pattern_cmd); | |
376 | return err; | |
377 | } | |
378 | ||
f0c2646a JB |
379 | enum iwl_mvm_tcp_packet_type { |
380 | MVM_TCP_TX_SYN, | |
381 | MVM_TCP_RX_SYNACK, | |
382 | MVM_TCP_TX_DATA, | |
383 | MVM_TCP_RX_ACK, | |
384 | MVM_TCP_RX_WAKE, | |
385 | MVM_TCP_TX_FIN, | |
386 | }; | |
387 | ||
388 | static __le16 pseudo_hdr_check(int len, __be32 saddr, __be32 daddr) | |
389 | { | |
390 | __sum16 check = tcp_v4_check(len, saddr, daddr, 0); | |
391 | return cpu_to_le16(be16_to_cpu((__force __be16)check)); | |
392 | } | |
393 | ||
b002c7e1 | 394 | static void iwl_mvm_build_tcp_packet(struct ieee80211_vif *vif, |
f0c2646a JB |
395 | struct cfg80211_wowlan_tcp *tcp, |
396 | void *_pkt, u8 *mask, | |
397 | __le16 *pseudo_hdr_csum, | |
398 | enum iwl_mvm_tcp_packet_type ptype) | |
399 | { | |
400 | struct { | |
401 | struct ethhdr eth; | |
402 | struct iphdr ip; | |
403 | struct tcphdr tcp; | |
404 | u8 data[]; | |
405 | } __packed *pkt = _pkt; | |
406 | u16 ip_tot_len = sizeof(struct iphdr) + sizeof(struct tcphdr); | |
407 | int i; | |
408 | ||
409 | pkt->eth.h_proto = cpu_to_be16(ETH_P_IP), | |
410 | pkt->ip.version = 4; | |
411 | pkt->ip.ihl = 5; | |
412 | pkt->ip.protocol = IPPROTO_TCP; | |
413 | ||
414 | switch (ptype) { | |
415 | case MVM_TCP_TX_SYN: | |
416 | case MVM_TCP_TX_DATA: | |
417 | case MVM_TCP_TX_FIN: | |
418 | memcpy(pkt->eth.h_dest, tcp->dst_mac, ETH_ALEN); | |
419 | memcpy(pkt->eth.h_source, vif->addr, ETH_ALEN); | |
420 | pkt->ip.ttl = 128; | |
421 | pkt->ip.saddr = tcp->src; | |
422 | pkt->ip.daddr = tcp->dst; | |
423 | pkt->tcp.source = cpu_to_be16(tcp->src_port); | |
424 | pkt->tcp.dest = cpu_to_be16(tcp->dst_port); | |
425 | /* overwritten for TX SYN later */ | |
426 | pkt->tcp.doff = sizeof(struct tcphdr) / 4; | |
427 | pkt->tcp.window = cpu_to_be16(65000); | |
428 | break; | |
429 | case MVM_TCP_RX_SYNACK: | |
430 | case MVM_TCP_RX_ACK: | |
431 | case MVM_TCP_RX_WAKE: | |
432 | memcpy(pkt->eth.h_dest, vif->addr, ETH_ALEN); | |
433 | memcpy(pkt->eth.h_source, tcp->dst_mac, ETH_ALEN); | |
434 | pkt->ip.saddr = tcp->dst; | |
435 | pkt->ip.daddr = tcp->src; | |
436 | pkt->tcp.source = cpu_to_be16(tcp->dst_port); | |
437 | pkt->tcp.dest = cpu_to_be16(tcp->src_port); | |
438 | break; | |
439 | default: | |
440 | WARN_ON(1); | |
441 | return; | |
442 | } | |
443 | ||
444 | switch (ptype) { | |
445 | case MVM_TCP_TX_SYN: | |
446 | /* firmware assumes 8 option bytes - 8 NOPs for now */ | |
447 | memset(pkt->data, 0x01, 8); | |
448 | ip_tot_len += 8; | |
449 | pkt->tcp.doff = (sizeof(struct tcphdr) + 8) / 4; | |
450 | pkt->tcp.syn = 1; | |
451 | break; | |
452 | case MVM_TCP_TX_DATA: | |
453 | ip_tot_len += tcp->payload_len; | |
454 | memcpy(pkt->data, tcp->payload, tcp->payload_len); | |
455 | pkt->tcp.psh = 1; | |
456 | pkt->tcp.ack = 1; | |
457 | break; | |
458 | case MVM_TCP_TX_FIN: | |
459 | pkt->tcp.fin = 1; | |
460 | pkt->tcp.ack = 1; | |
461 | break; | |
462 | case MVM_TCP_RX_SYNACK: | |
463 | pkt->tcp.syn = 1; | |
464 | pkt->tcp.ack = 1; | |
465 | break; | |
466 | case MVM_TCP_RX_ACK: | |
467 | pkt->tcp.ack = 1; | |
468 | break; | |
469 | case MVM_TCP_RX_WAKE: | |
470 | ip_tot_len += tcp->wake_len; | |
471 | pkt->tcp.psh = 1; | |
472 | pkt->tcp.ack = 1; | |
473 | memcpy(pkt->data, tcp->wake_data, tcp->wake_len); | |
474 | break; | |
475 | } | |
476 | ||
477 | switch (ptype) { | |
478 | case MVM_TCP_TX_SYN: | |
479 | case MVM_TCP_TX_DATA: | |
480 | case MVM_TCP_TX_FIN: | |
481 | pkt->ip.tot_len = cpu_to_be16(ip_tot_len); | |
482 | pkt->ip.check = ip_fast_csum(&pkt->ip, pkt->ip.ihl); | |
483 | break; | |
484 | case MVM_TCP_RX_WAKE: | |
485 | for (i = 0; i < DIV_ROUND_UP(tcp->wake_len, 8); i++) { | |
486 | u8 tmp = tcp->wake_mask[i]; | |
487 | mask[i + 6] |= tmp << 6; | |
488 | if (i + 1 < DIV_ROUND_UP(tcp->wake_len, 8)) | |
489 | mask[i + 7] = tmp >> 2; | |
490 | } | |
491 | /* fall through for ethernet/IP/TCP headers mask */ | |
492 | case MVM_TCP_RX_SYNACK: | |
493 | case MVM_TCP_RX_ACK: | |
494 | mask[0] = 0xff; /* match ethernet */ | |
495 | /* | |
496 | * match ethernet, ip.version, ip.ihl | |
497 | * the ip.ihl half byte is really masked out by firmware | |
498 | */ | |
499 | mask[1] = 0x7f; | |
500 | mask[2] = 0x80; /* match ip.protocol */ | |
501 | mask[3] = 0xfc; /* match ip.saddr, ip.daddr */ | |
502 | mask[4] = 0x3f; /* match ip.daddr, tcp.source, tcp.dest */ | |
503 | mask[5] = 0x80; /* match tcp flags */ | |
504 | /* leave rest (0 or set for MVM_TCP_RX_WAKE) */ | |
505 | break; | |
506 | }; | |
507 | ||
508 | *pseudo_hdr_csum = pseudo_hdr_check(ip_tot_len - sizeof(struct iphdr), | |
509 | pkt->ip.saddr, pkt->ip.daddr); | |
510 | } | |
511 | ||
512 | static int iwl_mvm_send_remote_wake_cfg(struct iwl_mvm *mvm, | |
513 | struct ieee80211_vif *vif, | |
514 | struct cfg80211_wowlan_tcp *tcp) | |
515 | { | |
516 | struct iwl_wowlan_remote_wake_config *cfg; | |
517 | struct iwl_host_cmd cmd = { | |
518 | .id = REMOTE_WAKE_CONFIG_CMD, | |
519 | .len = { sizeof(*cfg), }, | |
520 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
f0c2646a JB |
521 | }; |
522 | int ret; | |
523 | ||
524 | if (!tcp) | |
525 | return 0; | |
526 | ||
527 | cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); | |
528 | if (!cfg) | |
529 | return -ENOMEM; | |
530 | cmd.data[0] = cfg; | |
531 | ||
532 | cfg->max_syn_retries = 10; | |
533 | cfg->max_data_retries = 10; | |
534 | cfg->tcp_syn_ack_timeout = 1; /* seconds */ | |
535 | cfg->tcp_ack_timeout = 1; /* seconds */ | |
536 | ||
537 | /* SYN (TX) */ | |
538 | iwl_mvm_build_tcp_packet( | |
b002c7e1 | 539 | vif, tcp, cfg->syn_tx.data, NULL, |
f0c2646a JB |
540 | &cfg->syn_tx.info.tcp_pseudo_header_checksum, |
541 | MVM_TCP_TX_SYN); | |
542 | cfg->syn_tx.info.tcp_payload_length = 0; | |
543 | ||
544 | /* SYN/ACK (RX) */ | |
545 | iwl_mvm_build_tcp_packet( | |
b002c7e1 | 546 | vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask, |
f0c2646a JB |
547 | &cfg->synack_rx.info.tcp_pseudo_header_checksum, |
548 | MVM_TCP_RX_SYNACK); | |
549 | cfg->synack_rx.info.tcp_payload_length = 0; | |
550 | ||
551 | /* KEEPALIVE/ACK (TX) */ | |
552 | iwl_mvm_build_tcp_packet( | |
b002c7e1 | 553 | vif, tcp, cfg->keepalive_tx.data, NULL, |
f0c2646a JB |
554 | &cfg->keepalive_tx.info.tcp_pseudo_header_checksum, |
555 | MVM_TCP_TX_DATA); | |
556 | cfg->keepalive_tx.info.tcp_payload_length = | |
557 | cpu_to_le16(tcp->payload_len); | |
558 | cfg->sequence_number_offset = tcp->payload_seq.offset; | |
559 | /* length must be 0..4, the field is little endian */ | |
560 | cfg->sequence_number_length = tcp->payload_seq.len; | |
561 | cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start); | |
562 | cfg->keepalive_interval = cpu_to_le16(tcp->data_interval); | |
563 | if (tcp->payload_tok.len) { | |
564 | cfg->token_offset = tcp->payload_tok.offset; | |
565 | cfg->token_length = tcp->payload_tok.len; | |
566 | cfg->num_tokens = | |
567 | cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len); | |
568 | memcpy(cfg->tokens, tcp->payload_tok.token_stream, | |
569 | tcp->tokens_size); | |
570 | } else { | |
571 | /* set tokens to max value to almost never run out */ | |
572 | cfg->num_tokens = cpu_to_le16(65535); | |
573 | } | |
574 | ||
575 | /* ACK (RX) */ | |
576 | iwl_mvm_build_tcp_packet( | |
b002c7e1 | 577 | vif, tcp, cfg->keepalive_ack_rx.data, |
f0c2646a JB |
578 | cfg->keepalive_ack_rx.rx_mask, |
579 | &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum, | |
580 | MVM_TCP_RX_ACK); | |
581 | cfg->keepalive_ack_rx.info.tcp_payload_length = 0; | |
582 | ||
583 | /* WAKEUP (RX) */ | |
584 | iwl_mvm_build_tcp_packet( | |
b002c7e1 | 585 | vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask, |
f0c2646a JB |
586 | &cfg->wake_rx.info.tcp_pseudo_header_checksum, |
587 | MVM_TCP_RX_WAKE); | |
588 | cfg->wake_rx.info.tcp_payload_length = | |
589 | cpu_to_le16(tcp->wake_len); | |
590 | ||
591 | /* FIN */ | |
592 | iwl_mvm_build_tcp_packet( | |
b002c7e1 | 593 | vif, tcp, cfg->fin_tx.data, NULL, |
f0c2646a JB |
594 | &cfg->fin_tx.info.tcp_pseudo_header_checksum, |
595 | MVM_TCP_TX_FIN); | |
596 | cfg->fin_tx.info.tcp_payload_length = 0; | |
597 | ||
598 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
599 | kfree(cfg); | |
600 | ||
601 | return ret; | |
602 | } | |
603 | ||
8ca151b5 JB |
604 | struct iwl_d3_iter_data { |
605 | struct iwl_mvm *mvm; | |
606 | struct ieee80211_vif *vif; | |
607 | bool error; | |
608 | }; | |
609 | ||
610 | static void iwl_mvm_d3_iface_iterator(void *_data, u8 *mac, | |
611 | struct ieee80211_vif *vif) | |
612 | { | |
613 | struct iwl_d3_iter_data *data = _data; | |
8ca151b5 JB |
614 | |
615 | if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) | |
616 | return; | |
617 | ||
8ca151b5 JB |
618 | if (data->vif) { |
619 | IWL_ERR(data->mvm, "More than one managed interface active!\n"); | |
620 | data->error = true; | |
621 | return; | |
622 | } | |
623 | ||
624 | data->vif = vif; | |
625 | } | |
626 | ||
627 | static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
628 | struct ieee80211_sta *ap_sta) | |
629 | { | |
630 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
631 | struct ieee80211_chanctx_conf *ctx; | |
632 | u8 chains_static, chains_dynamic; | |
633 | struct cfg80211_chan_def chandef; | |
634 | int ret, i; | |
635 | struct iwl_binding_cmd binding_cmd = {}; | |
636 | struct iwl_time_quota_cmd quota_cmd = {}; | |
637 | u32 status; | |
638 | ||
639 | /* add back the PHY */ | |
640 | if (WARN_ON(!mvmvif->phy_ctxt)) | |
641 | return -EINVAL; | |
642 | ||
643 | rcu_read_lock(); | |
644 | ctx = rcu_dereference(vif->chanctx_conf); | |
645 | if (WARN_ON(!ctx)) { | |
646 | rcu_read_unlock(); | |
647 | return -EINVAL; | |
648 | } | |
649 | chandef = ctx->def; | |
650 | chains_static = ctx->rx_chains_static; | |
651 | chains_dynamic = ctx->rx_chains_dynamic; | |
652 | rcu_read_unlock(); | |
653 | ||
654 | ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef, | |
655 | chains_static, chains_dynamic); | |
656 | if (ret) | |
657 | return ret; | |
658 | ||
659 | /* add back the MAC */ | |
660 | mvmvif->uploaded = false; | |
661 | ||
662 | if (WARN_ON(!vif->bss_conf.assoc)) | |
663 | return -EINVAL; | |
bca49d9a | 664 | |
8ca151b5 | 665 | ret = iwl_mvm_mac_ctxt_add(mvm, vif); |
8ca151b5 JB |
666 | if (ret) |
667 | return ret; | |
668 | ||
669 | /* add back binding - XXX refactor? */ | |
670 | binding_cmd.id_and_color = | |
671 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, | |
672 | mvmvif->phy_ctxt->color)); | |
673 | binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); | |
674 | binding_cmd.phy = | |
675 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, | |
676 | mvmvif->phy_ctxt->color)); | |
677 | binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
678 | mvmvif->color)); | |
679 | for (i = 1; i < MAX_MACS_IN_BINDING; i++) | |
680 | binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); | |
681 | ||
682 | status = 0; | |
683 | ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, | |
684 | sizeof(binding_cmd), &binding_cmd, | |
685 | &status); | |
686 | if (ret) { | |
687 | IWL_ERR(mvm, "Failed to add binding: %d\n", ret); | |
688 | return ret; | |
689 | } | |
690 | ||
691 | if (status) { | |
692 | IWL_ERR(mvm, "Binding command failed: %u\n", status); | |
693 | return -EIO; | |
694 | } | |
695 | ||
7a453973 | 696 | ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false); |
8ca151b5 JB |
697 | if (ret) |
698 | return ret; | |
699 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta); | |
700 | ||
3dfd3a97 | 701 | ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL); |
8ca151b5 JB |
702 | if (ret) |
703 | return ret; | |
704 | ||
705 | /* and some quota */ | |
706 | quota_cmd.quotas[0].id_and_color = | |
707 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, | |
708 | mvmvif->phy_ctxt->color)); | |
9a3daf82 EG |
709 | quota_cmd.quotas[0].quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); |
710 | quota_cmd.quotas[0].max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); | |
8ca151b5 JB |
711 | |
712 | for (i = 1; i < MAX_BINDINGS; i++) | |
713 | quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID); | |
714 | ||
a1022927 | 715 | ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, |
8ca151b5 JB |
716 | sizeof(quota_cmd), "a_cmd); |
717 | if (ret) | |
718 | IWL_ERR(mvm, "Failed to send quota: %d\n", ret); | |
719 | ||
720 | return 0; | |
721 | } | |
722 | ||
4ac6cb59 JB |
723 | static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, |
724 | struct ieee80211_vif *vif) | |
725 | { | |
6d9d32b8 JB |
726 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
727 | struct iwl_nonqos_seq_query_cmd query_cmd = { | |
728 | .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), | |
729 | .mac_id_n_color = | |
730 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
731 | mvmvif->color)), | |
732 | }; | |
4ac6cb59 JB |
733 | struct iwl_host_cmd cmd = { |
734 | .id = NON_QOS_TX_COUNTER_CMD, | |
a1022927 | 735 | .flags = CMD_WANT_SKB, |
4ac6cb59 JB |
736 | }; |
737 | int err; | |
738 | u32 size; | |
739 | ||
3afec639 EG |
740 | cmd.data[0] = &query_cmd; |
741 | cmd.len[0] = sizeof(query_cmd); | |
6d9d32b8 | 742 | |
4ac6cb59 JB |
743 | err = iwl_mvm_send_cmd(mvm, &cmd); |
744 | if (err) | |
745 | return err; | |
746 | ||
65b30348 | 747 | size = iwl_rx_packet_payload_len(cmd.resp_pkt); |
6d9d32b8 | 748 | if (size < sizeof(__le16)) { |
4ac6cb59 | 749 | err = -EINVAL; |
6d9d32b8 JB |
750 | } else { |
751 | err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); | |
3afec639 EG |
752 | /* firmware returns next, not last-used seqno */ |
753 | err = (u16) (err - 0x10); | |
6d9d32b8 | 754 | } |
4ac6cb59 JB |
755 | |
756 | iwl_free_resp(&cmd); | |
757 | return err; | |
758 | } | |
759 | ||
6d9d32b8 JB |
760 | void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
761 | { | |
762 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
763 | struct iwl_nonqos_seq_query_cmd query_cmd = { | |
764 | .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), | |
765 | .mac_id_n_color = | |
766 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
767 | mvmvif->color)), | |
768 | .value = cpu_to_le16(mvmvif->seqno), | |
769 | }; | |
770 | ||
771 | /* return if called during restart, not resume from D3 */ | |
772 | if (!mvmvif->seqno_valid) | |
773 | return; | |
774 | ||
775 | mvmvif->seqno_valid = false; | |
776 | ||
a1022927 | 777 | if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, |
6d9d32b8 JB |
778 | sizeof(query_cmd), &query_cmd)) |
779 | IWL_ERR(mvm, "failed to set non-QoS seqno\n"); | |
780 | } | |
781 | ||
671b5820 LC |
782 | static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) |
783 | { | |
784 | iwl_mvm_cancel_scan(mvm); | |
785 | ||
786 | iwl_trans_stop_device(mvm->trans); | |
787 | ||
788 | /* | |
789 | * Set the HW restart bit -- this is mostly true as we're | |
790 | * going to load new firmware and reprogram that, though | |
791 | * the reprogramming is going to be manual to avoid adding | |
792 | * all the MACs that aren't support. | |
793 | * We don't have to clear up everything though because the | |
794 | * reprogramming is manual. When we resume, we'll actually | |
795 | * go through a proper restart sequence again to switch | |
796 | * back to the runtime firmware image. | |
797 | */ | |
798 | set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); | |
799 | ||
800 | /* We reprogram keys and shouldn't allocate new key indices */ | |
801 | memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); | |
802 | ||
803 | mvm->ptk_ivlen = 0; | |
804 | mvm->ptk_icvlen = 0; | |
805 | mvm->ptk_ivlen = 0; | |
806 | mvm->ptk_icvlen = 0; | |
807 | ||
808 | return iwl_mvm_load_d3_fw(mvm); | |
809 | } | |
810 | ||
1a95c8df EP |
811 | static int |
812 | iwl_mvm_send_wowlan_config_cmd(struct iwl_mvm *mvm, | |
813 | const struct iwl_wowlan_config_cmd_v3 *cmd) | |
814 | { | |
815 | /* start only with the v2 part of the command */ | |
816 | u16 cmd_len = sizeof(cmd->common); | |
817 | ||
818 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_WOWLAN_CONFIG_TID) | |
819 | cmd_len = sizeof(*cmd); | |
820 | ||
a1022927 | 821 | return iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, |
1a95c8df EP |
822 | cmd_len, cmd); |
823 | } | |
824 | ||
671b5820 LC |
825 | static int |
826 | iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm, | |
827 | struct cfg80211_wowlan *wowlan, | |
828 | struct iwl_wowlan_config_cmd_v3 *wowlan_config_cmd, | |
829 | struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, | |
830 | struct ieee80211_sta *ap_sta) | |
8ca151b5 | 831 | { |
1a95c8df | 832 | int ret; |
671b5820 | 833 | struct iwl_mvm_sta *mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; |
8ca151b5 | 834 | |
671b5820 | 835 | /* TODO: wowlan_config_cmd->common.wowlan_ba_teardown_tids */ |
8ca151b5 | 836 | |
671b5820 | 837 | wowlan_config_cmd->common.is_11n_connection = |
1a95c8df | 838 | ap_sta->ht_cap.ht_supported; |
8ca151b5 | 839 | |
4ac6cb59 JB |
840 | /* Query the last used seqno and set it */ |
841 | ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); | |
842 | if (ret < 0) | |
671b5820 | 843 | return ret; |
8ca151b5 | 844 | |
671b5820 LC |
845 | wowlan_config_cmd->common.non_qos_seq = cpu_to_le16(ret); |
846 | ||
847 | iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, &wowlan_config_cmd->common); | |
8ca151b5 JB |
848 | |
849 | if (wowlan->disconnect) | |
671b5820 | 850 | wowlan_config_cmd->common.wakeup_filter |= |
8ca151b5 JB |
851 | cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | |
852 | IWL_WOWLAN_WAKEUP_LINK_CHANGE); | |
853 | if (wowlan->magic_pkt) | |
671b5820 | 854 | wowlan_config_cmd->common.wakeup_filter |= |
8ca151b5 JB |
855 | cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); |
856 | if (wowlan->gtk_rekey_failure) | |
671b5820 | 857 | wowlan_config_cmd->common.wakeup_filter |= |
8ca151b5 JB |
858 | cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); |
859 | if (wowlan->eap_identity_req) | |
671b5820 | 860 | wowlan_config_cmd->common.wakeup_filter |= |
8ca151b5 JB |
861 | cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); |
862 | if (wowlan->four_way_handshake) | |
671b5820 | 863 | wowlan_config_cmd->common.wakeup_filter |= |
8ca151b5 JB |
864 | cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); |
865 | if (wowlan->n_patterns) | |
671b5820 | 866 | wowlan_config_cmd->common.wakeup_filter |= |
8ca151b5 JB |
867 | cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); |
868 | ||
869 | if (wowlan->rfkill_release) | |
671b5820 | 870 | wowlan_config_cmd->common.wakeup_filter |= |
8ca151b5 JB |
871 | cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); |
872 | ||
f0c2646a JB |
873 | if (wowlan->tcp) { |
874 | /* | |
6039f3e1 JB |
875 | * Set the "link change" (really "link lost") flag as well |
876 | * since that implies losing the TCP connection. | |
f0c2646a | 877 | */ |
671b5820 | 878 | wowlan_config_cmd->common.wakeup_filter |= |
f0c2646a JB |
879 | cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | |
880 | IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | | |
881 | IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | | |
882 | IWL_WOWLAN_WAKEUP_LINK_CHANGE); | |
883 | } | |
884 | ||
671b5820 LC |
885 | return 0; |
886 | } | |
f444eb10 | 887 | |
671b5820 LC |
888 | static int |
889 | iwl_mvm_wowlan_config(struct iwl_mvm *mvm, | |
890 | struct cfg80211_wowlan *wowlan, | |
891 | struct iwl_wowlan_config_cmd_v3 *wowlan_config_cmd, | |
892 | struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif, | |
893 | struct ieee80211_sta *ap_sta) | |
894 | { | |
895 | struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {}; | |
896 | struct iwl_wowlan_tkip_params_cmd tkip_cmd = {}; | |
897 | struct wowlan_key_data key_data = { | |
898 | .use_rsc_tsc = false, | |
899 | .tkip = &tkip_cmd, | |
900 | .use_tkip = false, | |
901 | }; | |
902 | int ret; | |
8ca151b5 JB |
903 | |
904 | ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); | |
905 | if (ret) | |
671b5820 LC |
906 | return ret; |
907 | ||
908 | key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); | |
909 | if (!key_data.rsc_tsc) | |
910 | return -ENOMEM; | |
8ca151b5 JB |
911 | |
912 | if (!iwlwifi_mod_params.sw_crypto) { | |
913 | /* | |
914 | * This needs to be unlocked due to lock ordering | |
915 | * constraints. Since we're in the suspend path | |
916 | * that isn't really a problem though. | |
917 | */ | |
918 | mutex_unlock(&mvm->mutex); | |
919 | ieee80211_iter_keys(mvm->hw, vif, | |
920 | iwl_mvm_wowlan_program_keys, | |
921 | &key_data); | |
922 | mutex_lock(&mvm->mutex); | |
923 | if (key_data.error) { | |
924 | ret = -EIO; | |
925 | goto out; | |
926 | } | |
927 | ||
928 | if (key_data.use_rsc_tsc) { | |
929 | struct iwl_host_cmd rsc_tsc_cmd = { | |
930 | .id = WOWLAN_TSC_RSC_PARAM, | |
8ca151b5 JB |
931 | .data[0] = key_data.rsc_tsc, |
932 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
933 | .len[0] = sizeof(*key_data.rsc_tsc), | |
934 | }; | |
935 | ||
936 | ret = iwl_mvm_send_cmd(mvm, &rsc_tsc_cmd); | |
937 | if (ret) | |
938 | goto out; | |
939 | } | |
940 | ||
941 | if (key_data.use_tkip) { | |
942 | ret = iwl_mvm_send_cmd_pdu(mvm, | |
943 | WOWLAN_TKIP_PARAM, | |
a1022927 | 944 | 0, sizeof(tkip_cmd), |
8ca151b5 JB |
945 | &tkip_cmd); |
946 | if (ret) | |
947 | goto out; | |
948 | } | |
949 | ||
950 | if (mvmvif->rekey_data.valid) { | |
951 | memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd)); | |
952 | memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, | |
953 | NL80211_KCK_LEN); | |
954 | kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN); | |
955 | memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, | |
956 | NL80211_KEK_LEN); | |
957 | kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN); | |
958 | kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; | |
959 | ||
960 | ret = iwl_mvm_send_cmd_pdu(mvm, | |
a1022927 | 961 | WOWLAN_KEK_KCK_MATERIAL, 0, |
8ca151b5 JB |
962 | sizeof(kek_kck_cmd), |
963 | &kek_kck_cmd); | |
964 | if (ret) | |
965 | goto out; | |
966 | } | |
967 | } | |
968 | ||
671b5820 | 969 | ret = iwl_mvm_send_wowlan_config_cmd(mvm, wowlan_config_cmd); |
8ca151b5 JB |
970 | if (ret) |
971 | goto out; | |
972 | ||
973 | ret = iwl_mvm_send_patterns(mvm, wowlan); | |
974 | if (ret) | |
975 | goto out; | |
976 | ||
a1022927 | 977 | ret = iwl_mvm_send_proto_offload(mvm, vif, false, 0); |
8ca151b5 JB |
978 | if (ret) |
979 | goto out; | |
980 | ||
f0c2646a | 981 | ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp); |
671b5820 LC |
982 | |
983 | out: | |
984 | kfree(key_data.rsc_tsc); | |
985 | return ret; | |
986 | } | |
987 | ||
988 | static int __iwl_mvm_suspend(struct ieee80211_hw *hw, | |
989 | struct cfg80211_wowlan *wowlan, | |
990 | bool test) | |
991 | { | |
992 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
993 | struct iwl_d3_iter_data suspend_iter_data = { | |
994 | .mvm = mvm, | |
995 | }; | |
996 | struct ieee80211_vif *vif = NULL; | |
997 | struct iwl_mvm_vif *mvmvif = NULL; | |
998 | struct ieee80211_sta *ap_sta = NULL; | |
999 | struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = {}; | |
1000 | struct iwl_d3_manager_config d3_cfg_cmd_data = { | |
1001 | /* | |
1002 | * Program the minimum sleep time to 10 seconds, as many | |
1003 | * platforms have issues processing a wakeup signal while | |
1004 | * still being in the process of suspending. | |
1005 | */ | |
1006 | .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), | |
1007 | }; | |
1008 | struct iwl_host_cmd d3_cfg_cmd = { | |
1009 | .id = D3_CONFIG_CMD, | |
1010 | .flags = CMD_WANT_SKB, | |
1011 | .data[0] = &d3_cfg_cmd_data, | |
1012 | .len[0] = sizeof(d3_cfg_cmd_data), | |
1013 | }; | |
1014 | int ret; | |
1015 | int len __maybe_unused; | |
1016 | ||
1017 | if (!wowlan) { | |
1018 | /* | |
1019 | * mac80211 shouldn't get here, but for D3 test | |
1020 | * it doesn't warrant a warning | |
1021 | */ | |
1022 | WARN_ON(!test); | |
1023 | return -EINVAL; | |
1024 | } | |
1025 | ||
1026 | mutex_lock(&mvm->mutex); | |
1027 | ||
1e4d19ca | 1028 | /* see if there's only a single BSS vif */ |
671b5820 LC |
1029 | ieee80211_iterate_active_interfaces_atomic( |
1030 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
1031 | iwl_mvm_d3_iface_iterator, &suspend_iter_data); | |
1032 | ||
1033 | if (suspend_iter_data.error || !suspend_iter_data.vif) { | |
1034 | ret = 1; | |
1035 | goto out_noreset; | |
1036 | } | |
1037 | ||
1038 | vif = suspend_iter_data.vif; | |
1039 | mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1040 | ||
1e4d19ca LC |
1041 | /* if we're associated, this is wowlan */ |
1042 | if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) { | |
1043 | ap_sta = rcu_dereference_protected( | |
1044 | mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], | |
1045 | lockdep_is_held(&mvm->mutex)); | |
1046 | if (IS_ERR_OR_NULL(ap_sta)) { | |
1047 | ret = -EINVAL; | |
1048 | goto out_noreset; | |
1049 | } | |
671b5820 | 1050 | |
1e4d19ca LC |
1051 | ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd, |
1052 | vif, mvmvif, ap_sta); | |
1053 | if (ret) | |
1054 | goto out_noreset; | |
671b5820 | 1055 | |
1e4d19ca LC |
1056 | ret = iwl_mvm_switch_to_d3(mvm); |
1057 | if (ret) | |
1058 | goto out; | |
671b5820 | 1059 | |
1e4d19ca LC |
1060 | ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd, |
1061 | vif, mvmvif, ap_sta); | |
1062 | if (ret) | |
1063 | goto out; | |
1064 | } else { | |
1065 | ret = 1; | |
1066 | goto out_noreset; | |
1067 | } | |
f0c2646a | 1068 | |
c1cb92fc | 1069 | ret = iwl_mvm_power_update_device(mvm); |
64b928c4 AB |
1070 | if (ret) |
1071 | goto out; | |
1072 | ||
999609f1 | 1073 | ret = iwl_mvm_power_update_mac(mvm); |
ee1e8422 AB |
1074 | if (ret) |
1075 | goto out; | |
1076 | ||
b0114714 JB |
1077 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
1078 | if (mvm->d3_wake_sysassert) | |
1079 | d3_cfg_cmd_data.wakeup_flags |= | |
1080 | cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); | |
1081 | #endif | |
1082 | ||
8ca151b5 | 1083 | /* must be last -- this switches firmware state */ |
debff618 | 1084 | ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); |
8ca151b5 JB |
1085 | if (ret) |
1086 | goto out; | |
debff618 | 1087 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
65b30348 JB |
1088 | len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); |
1089 | if (len >= sizeof(u32)) { | |
debff618 JB |
1090 | mvm->d3_test_pme_ptr = |
1091 | le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); | |
debff618 JB |
1092 | } |
1093 | #endif | |
1094 | iwl_free_resp(&d3_cfg_cmd); | |
8ca151b5 JB |
1095 | |
1096 | clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); | |
1097 | ||
debff618 | 1098 | iwl_trans_d3_suspend(mvm->trans, test); |
8ca151b5 | 1099 | out: |
8ca151b5 JB |
1100 | if (ret < 0) |
1101 | ieee80211_restart_hw(mvm->hw); | |
b70ab727 | 1102 | out_noreset: |
8ca151b5 JB |
1103 | mutex_unlock(&mvm->mutex); |
1104 | ||
1105 | return ret; | |
1106 | } | |
1107 | ||
debff618 JB |
1108 | int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) |
1109 | { | |
d15a747f EP |
1110 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); |
1111 | ||
1112 | if (iwl_mvm_is_d0i3_supported(mvm)) { | |
1113 | mutex_lock(&mvm->d0i3_suspend_mutex); | |
1114 | __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); | |
1115 | mutex_unlock(&mvm->d0i3_suspend_mutex); | |
1116 | return 0; | |
1117 | } | |
1118 | ||
debff618 JB |
1119 | return __iwl_mvm_suspend(hw, wowlan, false); |
1120 | } | |
1121 | ||
6d9d32b8 JB |
1122 | /* converted data from the different status responses */ |
1123 | struct iwl_wowlan_status_data { | |
1124 | u16 pattern_number; | |
1125 | u16 qos_seq_ctr[8]; | |
1126 | u32 wakeup_reasons; | |
1127 | u32 wake_packet_length; | |
1128 | u32 wake_packet_bufsize; | |
1129 | const u8 *wake_packet; | |
1130 | }; | |
1131 | ||
7abc4632 JB |
1132 | static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, |
1133 | struct ieee80211_vif *vif, | |
6d9d32b8 | 1134 | struct iwl_wowlan_status_data *status) |
9b26b500 | 1135 | { |
7abc4632 | 1136 | struct sk_buff *pkt = NULL; |
9b26b500 JB |
1137 | struct cfg80211_wowlan_wakeup wakeup = { |
1138 | .pattern_idx = -1, | |
1139 | }; | |
1140 | struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; | |
6d9d32b8 | 1141 | u32 reasons = status->wakeup_reasons; |
9b26b500 JB |
1142 | |
1143 | if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { | |
1144 | wakeup_report = NULL; | |
1145 | goto report; | |
1146 | } | |
1147 | ||
f444eb10 | 1148 | if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) |
9b26b500 | 1149 | wakeup.magic_pkt = true; |
9b26b500 | 1150 | |
f444eb10 | 1151 | if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) |
9b26b500 | 1152 | wakeup.pattern_idx = |
6d9d32b8 | 1153 | status->pattern_number; |
9b26b500 JB |
1154 | |
1155 | if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | | |
1156 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) | |
1157 | wakeup.disconnect = true; | |
1158 | ||
f444eb10 | 1159 | if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) |
9b26b500 | 1160 | wakeup.gtk_rekey_failure = true; |
9b26b500 | 1161 | |
f444eb10 | 1162 | if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) |
9b26b500 | 1163 | wakeup.rfkill_release = true; |
9b26b500 | 1164 | |
f444eb10 | 1165 | if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) |
9b26b500 | 1166 | wakeup.eap_identity_req = true; |
9b26b500 | 1167 | |
f444eb10 | 1168 | if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) |
9b26b500 | 1169 | wakeup.four_way_handshake = true; |
9b26b500 | 1170 | |
f0c2646a JB |
1171 | if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) |
1172 | wakeup.tcp_connlost = true; | |
1173 | ||
1174 | if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) | |
1175 | wakeup.tcp_nomoretokens = true; | |
1176 | ||
1177 | if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) | |
1178 | wakeup.tcp_match = true; | |
1179 | ||
9b26b500 | 1180 | if (status->wake_packet_bufsize) { |
6d9d32b8 JB |
1181 | int pktsize = status->wake_packet_bufsize; |
1182 | int pktlen = status->wake_packet_length; | |
f444eb10 JB |
1183 | const u8 *pktdata = status->wake_packet; |
1184 | struct ieee80211_hdr *hdr = (void *)pktdata; | |
1185 | int truncated = pktlen - pktsize; | |
1186 | ||
1187 | /* this would be a firmware bug */ | |
1188 | if (WARN_ON_ONCE(truncated < 0)) | |
1189 | truncated = 0; | |
1190 | ||
1191 | if (ieee80211_is_data(hdr->frame_control)) { | |
1192 | int hdrlen = ieee80211_hdrlen(hdr->frame_control); | |
1193 | int ivlen = 0, icvlen = 4; /* also FCS */ | |
9b26b500 | 1194 | |
9b26b500 JB |
1195 | pkt = alloc_skb(pktsize, GFP_KERNEL); |
1196 | if (!pkt) | |
1197 | goto report; | |
f444eb10 JB |
1198 | |
1199 | memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen); | |
1200 | pktdata += hdrlen; | |
1201 | pktsize -= hdrlen; | |
1202 | ||
1203 | if (ieee80211_has_protected(hdr->frame_control)) { | |
7abc4632 JB |
1204 | /* |
1205 | * This is unlocked and using gtk_i(c)vlen, | |
1206 | * but since everything is under RTNL still | |
1207 | * that's not really a problem - changing | |
1208 | * it would be difficult. | |
1209 | */ | |
f444eb10 JB |
1210 | if (is_multicast_ether_addr(hdr->addr1)) { |
1211 | ivlen = mvm->gtk_ivlen; | |
1212 | icvlen += mvm->gtk_icvlen; | |
1213 | } else { | |
1214 | ivlen = mvm->ptk_ivlen; | |
1215 | icvlen += mvm->ptk_icvlen; | |
1216 | } | |
1217 | } | |
1218 | ||
1219 | /* if truncated, FCS/ICV is (partially) gone */ | |
1220 | if (truncated >= icvlen) { | |
1221 | icvlen = 0; | |
1222 | truncated -= icvlen; | |
1223 | } else { | |
1224 | icvlen -= truncated; | |
1225 | truncated = 0; | |
1226 | } | |
1227 | ||
1228 | pktsize -= ivlen + icvlen; | |
1229 | pktdata += ivlen; | |
1230 | ||
1231 | memcpy(skb_put(pkt, pktsize), pktdata, pktsize); | |
1232 | ||
9b26b500 JB |
1233 | if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) |
1234 | goto report; | |
1235 | wakeup.packet = pkt->data; | |
1236 | wakeup.packet_present_len = pkt->len; | |
f444eb10 | 1237 | wakeup.packet_len = pkt->len - truncated; |
9b26b500 JB |
1238 | wakeup.packet_80211 = false; |
1239 | } else { | |
f444eb10 JB |
1240 | int fcslen = 4; |
1241 | ||
1242 | if (truncated >= 4) { | |
1243 | truncated -= 4; | |
1244 | fcslen = 0; | |
1245 | } else { | |
1246 | fcslen -= truncated; | |
1247 | truncated = 0; | |
1248 | } | |
1249 | pktsize -= fcslen; | |
9b26b500 JB |
1250 | wakeup.packet = status->wake_packet; |
1251 | wakeup.packet_present_len = pktsize; | |
f444eb10 | 1252 | wakeup.packet_len = pktlen - truncated; |
9b26b500 JB |
1253 | wakeup.packet_80211 = true; |
1254 | } | |
1255 | } | |
1256 | ||
1257 | report: | |
1258 | ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); | |
1259 | kfree_skb(pkt); | |
7abc4632 | 1260 | } |
9b26b500 | 1261 | |
6d9d32b8 JB |
1262 | static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, |
1263 | struct ieee80211_key_seq *seq) | |
1264 | { | |
1265 | u64 pn; | |
1266 | ||
1267 | pn = le64_to_cpu(sc->pn); | |
1268 | seq->ccmp.pn[0] = pn >> 40; | |
1269 | seq->ccmp.pn[1] = pn >> 32; | |
1270 | seq->ccmp.pn[2] = pn >> 24; | |
1271 | seq->ccmp.pn[3] = pn >> 16; | |
1272 | seq->ccmp.pn[4] = pn >> 8; | |
1273 | seq->ccmp.pn[5] = pn; | |
1274 | } | |
1275 | ||
1276 | static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, | |
1277 | struct ieee80211_key_seq *seq) | |
1278 | { | |
1279 | seq->tkip.iv32 = le32_to_cpu(sc->iv32); | |
1280 | seq->tkip.iv16 = le16_to_cpu(sc->iv16); | |
1281 | } | |
1282 | ||
1283 | static void iwl_mvm_set_aes_rx_seq(struct aes_sc *scs, | |
1284 | struct ieee80211_key_conf *key) | |
1285 | { | |
1286 | int tid; | |
1287 | ||
1288 | BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); | |
1289 | ||
1290 | for (tid = 0; tid < IWL_NUM_RSC; tid++) { | |
1291 | struct ieee80211_key_seq seq = {}; | |
1292 | ||
1293 | iwl_mvm_aes_sc_to_seq(&scs[tid], &seq); | |
1294 | ieee80211_set_key_rx_seq(key, tid, &seq); | |
1295 | } | |
1296 | } | |
1297 | ||
1298 | static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs, | |
1299 | struct ieee80211_key_conf *key) | |
1300 | { | |
1301 | int tid; | |
1302 | ||
1303 | BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); | |
1304 | ||
1305 | for (tid = 0; tid < IWL_NUM_RSC; tid++) { | |
1306 | struct ieee80211_key_seq seq = {}; | |
1307 | ||
1308 | iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq); | |
1309 | ieee80211_set_key_rx_seq(key, tid, &seq); | |
1310 | } | |
1311 | } | |
1312 | ||
1313 | static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, | |
3afec639 | 1314 | struct iwl_wowlan_status *status) |
6d9d32b8 JB |
1315 | { |
1316 | union iwl_all_tsc_rsc *rsc = &status->gtk.rsc.all_tsc_rsc; | |
1317 | ||
1318 | switch (key->cipher) { | |
1319 | case WLAN_CIPHER_SUITE_CCMP: | |
1320 | iwl_mvm_set_aes_rx_seq(rsc->aes.multicast_rsc, key); | |
1321 | break; | |
1322 | case WLAN_CIPHER_SUITE_TKIP: | |
1323 | iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key); | |
1324 | break; | |
1325 | default: | |
1326 | WARN_ON(1); | |
1327 | } | |
1328 | } | |
1329 | ||
1330 | struct iwl_mvm_d3_gtk_iter_data { | |
3afec639 | 1331 | struct iwl_wowlan_status *status; |
6d9d32b8 JB |
1332 | void *last_gtk; |
1333 | u32 cipher; | |
1334 | bool find_phase, unhandled_cipher; | |
1335 | int num_keys; | |
1336 | }; | |
1337 | ||
1338 | static void iwl_mvm_d3_update_gtks(struct ieee80211_hw *hw, | |
1339 | struct ieee80211_vif *vif, | |
1340 | struct ieee80211_sta *sta, | |
1341 | struct ieee80211_key_conf *key, | |
1342 | void *_data) | |
1343 | { | |
1344 | struct iwl_mvm_d3_gtk_iter_data *data = _data; | |
1345 | ||
1346 | if (data->unhandled_cipher) | |
1347 | return; | |
1348 | ||
1349 | switch (key->cipher) { | |
1350 | case WLAN_CIPHER_SUITE_WEP40: | |
1351 | case WLAN_CIPHER_SUITE_WEP104: | |
1352 | /* ignore WEP completely, nothing to do */ | |
1353 | return; | |
1354 | case WLAN_CIPHER_SUITE_CCMP: | |
1355 | case WLAN_CIPHER_SUITE_TKIP: | |
1356 | /* we support these */ | |
1357 | break; | |
1358 | default: | |
1359 | /* everything else (even CMAC for MFP) - disconnect from AP */ | |
1360 | data->unhandled_cipher = true; | |
1361 | return; | |
1362 | } | |
1363 | ||
1364 | data->num_keys++; | |
1365 | ||
1366 | /* | |
1367 | * pairwise key - update sequence counters only; | |
1368 | * note that this assumes no TDLS sessions are active | |
1369 | */ | |
1370 | if (sta) { | |
1371 | struct ieee80211_key_seq seq = {}; | |
1372 | union iwl_all_tsc_rsc *sc = &data->status->gtk.rsc.all_tsc_rsc; | |
1373 | ||
1374 | if (data->find_phase) | |
1375 | return; | |
1376 | ||
1377 | switch (key->cipher) { | |
1378 | case WLAN_CIPHER_SUITE_CCMP: | |
1379 | iwl_mvm_aes_sc_to_seq(&sc->aes.tsc, &seq); | |
1380 | iwl_mvm_set_aes_rx_seq(sc->aes.unicast_rsc, key); | |
1381 | break; | |
1382 | case WLAN_CIPHER_SUITE_TKIP: | |
1383 | iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq); | |
1384 | iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key); | |
1385 | break; | |
1386 | } | |
1387 | ieee80211_set_key_tx_seq(key, &seq); | |
1388 | ||
1389 | /* that's it for this key */ | |
1390 | return; | |
1391 | } | |
1392 | ||
1393 | if (data->find_phase) { | |
1394 | data->last_gtk = key; | |
1395 | data->cipher = key->cipher; | |
1396 | return; | |
1397 | } | |
1398 | ||
1399 | if (data->status->num_of_gtk_rekeys) | |
1400 | ieee80211_remove_key(key); | |
1401 | else if (data->last_gtk == key) | |
1402 | iwl_mvm_set_key_rx_seq(key, data->status); | |
1403 | } | |
1404 | ||
1405 | static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, | |
1406 | struct ieee80211_vif *vif, | |
3afec639 | 1407 | struct iwl_wowlan_status *status) |
6d9d32b8 JB |
1408 | { |
1409 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1410 | struct iwl_mvm_d3_gtk_iter_data gtkdata = { | |
1411 | .status = status, | |
1412 | }; | |
431591cc EP |
1413 | u32 disconnection_reasons = |
1414 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | | |
1415 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; | |
6d9d32b8 JB |
1416 | |
1417 | if (!status || !vif->bss_conf.bssid) | |
1418 | return false; | |
1419 | ||
431591cc EP |
1420 | if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons) |
1421 | return false; | |
1422 | ||
6d9d32b8 JB |
1423 | /* find last GTK that we used initially, if any */ |
1424 | gtkdata.find_phase = true; | |
1425 | ieee80211_iter_keys(mvm->hw, vif, | |
1426 | iwl_mvm_d3_update_gtks, >kdata); | |
1427 | /* not trying to keep connections with MFP/unhandled ciphers */ | |
1428 | if (gtkdata.unhandled_cipher) | |
1429 | return false; | |
1430 | if (!gtkdata.num_keys) | |
cfa88893 | 1431 | goto out; |
6d9d32b8 JB |
1432 | if (!gtkdata.last_gtk) |
1433 | return false; | |
1434 | ||
1435 | /* | |
1436 | * invalidate all other GTKs that might still exist and update | |
1437 | * the one that we used | |
1438 | */ | |
1439 | gtkdata.find_phase = false; | |
1440 | ieee80211_iter_keys(mvm->hw, vif, | |
1441 | iwl_mvm_d3_update_gtks, >kdata); | |
1442 | ||
1443 | if (status->num_of_gtk_rekeys) { | |
1444 | struct ieee80211_key_conf *key; | |
1445 | struct { | |
1446 | struct ieee80211_key_conf conf; | |
1447 | u8 key[32]; | |
1448 | } conf = { | |
1449 | .conf.cipher = gtkdata.cipher, | |
1450 | .conf.keyidx = status->gtk.key_index, | |
1451 | }; | |
1452 | ||
1453 | switch (gtkdata.cipher) { | |
1454 | case WLAN_CIPHER_SUITE_CCMP: | |
1455 | conf.conf.keylen = WLAN_KEY_LEN_CCMP; | |
1456 | memcpy(conf.conf.key, status->gtk.decrypt_key, | |
1457 | WLAN_KEY_LEN_CCMP); | |
1458 | break; | |
1459 | case WLAN_CIPHER_SUITE_TKIP: | |
1460 | conf.conf.keylen = WLAN_KEY_LEN_TKIP; | |
1461 | memcpy(conf.conf.key, status->gtk.decrypt_key, 16); | |
1462 | /* leave TX MIC key zeroed, we don't use it anyway */ | |
1463 | memcpy(conf.conf.key + | |
1464 | NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, | |
1465 | status->gtk.tkip_mic_key, 8); | |
1466 | break; | |
1467 | } | |
1468 | ||
1469 | key = ieee80211_gtk_rekey_add(vif, &conf.conf); | |
1470 | if (IS_ERR(key)) | |
1471 | return false; | |
1472 | iwl_mvm_set_key_rx_seq(key, status); | |
1473 | } | |
1474 | ||
1475 | if (status->num_of_gtk_rekeys) { | |
1476 | __be64 replay_ctr = | |
1477 | cpu_to_be64(le64_to_cpu(status->replay_ctr)); | |
1478 | ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, | |
1479 | (void *)&replay_ctr, GFP_KERNEL); | |
1480 | } | |
1481 | ||
cfa88893 | 1482 | out: |
6d9d32b8 JB |
1483 | mvmvif->seqno_valid = true; |
1484 | /* +0x10 because the set API expects next-to-use, not last-used */ | |
1485 | mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10; | |
1486 | ||
1487 | return true; | |
1488 | } | |
1489 | ||
7abc4632 | 1490 | /* releases the MVM mutex */ |
6d9d32b8 | 1491 | static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, |
7abc4632 JB |
1492 | struct ieee80211_vif *vif) |
1493 | { | |
1494 | u32 base = mvm->error_event_table; | |
1495 | struct error_table_start { | |
1496 | /* cf. struct iwl_error_event_table */ | |
1497 | u32 valid; | |
1498 | u32 error_id; | |
1499 | } err_info; | |
1500 | struct iwl_host_cmd cmd = { | |
1501 | .id = WOWLAN_GET_STATUSES, | |
a1022927 | 1502 | .flags = CMD_WANT_SKB, |
7abc4632 | 1503 | }; |
6d9d32b8 | 1504 | struct iwl_wowlan_status_data status; |
3afec639 | 1505 | struct iwl_wowlan_status *fw_status; |
6d9d32b8 JB |
1506 | int ret, len, status_size, i; |
1507 | bool keep; | |
1508 | struct ieee80211_sta *ap_sta; | |
1509 | struct iwl_mvm_sta *mvm_ap_sta; | |
7abc4632 JB |
1510 | |
1511 | iwl_trans_read_mem_bytes(mvm->trans, base, | |
1512 | &err_info, sizeof(err_info)); | |
1513 | ||
1514 | if (err_info.valid) { | |
1515 | IWL_INFO(mvm, "error table is valid (%d)\n", | |
1516 | err_info.valid); | |
1517 | if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) { | |
1518 | struct cfg80211_wowlan_wakeup wakeup = { | |
1519 | .rfkill_release = true, | |
1520 | }; | |
1521 | ieee80211_report_wowlan_wakeup(vif, &wakeup, | |
1522 | GFP_KERNEL); | |
1523 | } | |
1524 | goto out_unlock; | |
1525 | } | |
1526 | ||
1527 | /* only for tracing for now */ | |
a1022927 | 1528 | ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL); |
7abc4632 JB |
1529 | if (ret) |
1530 | IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret); | |
1531 | ||
1532 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
1533 | if (ret) { | |
1534 | IWL_ERR(mvm, "failed to query status (%d)\n", ret); | |
1535 | goto out_unlock; | |
1536 | } | |
1537 | ||
1538 | /* RF-kill already asserted again... */ | |
1539 | if (!cmd.resp_pkt) | |
1540 | goto out_unlock; | |
1541 | ||
3afec639 | 1542 | status_size = sizeof(*fw_status); |
6d9d32b8 | 1543 | |
65b30348 JB |
1544 | len = iwl_rx_packet_payload_len(cmd.resp_pkt); |
1545 | if (len < status_size) { | |
7abc4632 JB |
1546 | IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); |
1547 | goto out_free_resp; | |
1548 | } | |
1549 | ||
3afec639 EG |
1550 | fw_status = (void *)cmd.resp_pkt->data; |
1551 | ||
1552 | status.pattern_number = le16_to_cpu(fw_status->pattern_number); | |
1553 | for (i = 0; i < 8; i++) | |
1554 | status.qos_seq_ctr[i] = | |
1555 | le16_to_cpu(fw_status->qos_seq_ctr[i]); | |
1556 | status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons); | |
1557 | status.wake_packet_length = | |
1558 | le32_to_cpu(fw_status->wake_packet_length); | |
1559 | status.wake_packet_bufsize = | |
1560 | le32_to_cpu(fw_status->wake_packet_bufsize); | |
1561 | status.wake_packet = fw_status->wake_packet; | |
7abc4632 | 1562 | |
65b30348 | 1563 | if (len != status_size + ALIGN(status.wake_packet_bufsize, 4)) { |
7abc4632 JB |
1564 | IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); |
1565 | goto out_free_resp; | |
1566 | } | |
1567 | ||
6d9d32b8 JB |
1568 | /* still at hard-coded place 0 for D3 image */ |
1569 | ap_sta = rcu_dereference_protected( | |
1570 | mvm->fw_id_to_mac_id[0], | |
1571 | lockdep_is_held(&mvm->mutex)); | |
1572 | if (IS_ERR_OR_NULL(ap_sta)) | |
1573 | goto out_free_resp; | |
1574 | ||
1575 | mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; | |
1576 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { | |
1577 | u16 seq = status.qos_seq_ctr[i]; | |
1578 | /* firmware stores last-used value, we store next value */ | |
1579 | seq += 0x10; | |
1580 | mvm_ap_sta->tid_data[i].seq_number = seq; | |
1581 | } | |
1582 | ||
7abc4632 JB |
1583 | /* now we have all the data we need, unlock to avoid mac80211 issues */ |
1584 | mutex_unlock(&mvm->mutex); | |
1585 | ||
6d9d32b8 JB |
1586 | iwl_mvm_report_wakeup_reasons(mvm, vif, &status); |
1587 | ||
3afec639 | 1588 | keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status); |
6d9d32b8 | 1589 | |
7abc4632 | 1590 | iwl_free_resp(&cmd); |
6d9d32b8 | 1591 | return keep; |
7abc4632 JB |
1592 | |
1593 | out_free_resp: | |
9b26b500 | 1594 | iwl_free_resp(&cmd); |
7abc4632 JB |
1595 | out_unlock: |
1596 | mutex_unlock(&mvm->mutex); | |
6d9d32b8 | 1597 | return false; |
9b26b500 JB |
1598 | } |
1599 | ||
afc66bb7 JB |
1600 | static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm) |
1601 | { | |
1602 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
1603 | const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN]; | |
1604 | u32 len = img->sec[IWL_UCODE_SECTION_DATA].len; | |
1605 | u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset; | |
1606 | ||
1607 | if (!mvm->store_d3_resume_sram) | |
1608 | return; | |
1609 | ||
1610 | if (!mvm->d3_resume_sram) { | |
1611 | mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL); | |
1612 | if (!mvm->d3_resume_sram) | |
1613 | return; | |
1614 | } | |
1615 | ||
1616 | iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len); | |
1617 | #endif | |
1618 | } | |
1619 | ||
6d9d32b8 JB |
1620 | static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, |
1621 | struct ieee80211_vif *vif) | |
1622 | { | |
1623 | /* skip the one we keep connection on */ | |
1624 | if (data == vif) | |
1625 | return; | |
1626 | ||
1627 | if (vif->type == NL80211_IFTYPE_STATION) | |
1628 | ieee80211_resume_disconnect(vif); | |
1629 | } | |
1630 | ||
debff618 | 1631 | static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) |
8ca151b5 | 1632 | { |
8ca151b5 JB |
1633 | struct iwl_d3_iter_data resume_iter_data = { |
1634 | .mvm = mvm, | |
1635 | }; | |
1636 | struct ieee80211_vif *vif = NULL; | |
8ca151b5 JB |
1637 | int ret; |
1638 | enum iwl_d3_status d3_status; | |
6d9d32b8 | 1639 | bool keep = false; |
8ca151b5 JB |
1640 | |
1641 | mutex_lock(&mvm->mutex); | |
1642 | ||
1643 | /* get the BSS vif pointer again */ | |
1644 | ieee80211_iterate_active_interfaces_atomic( | |
1645 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
1646 | iwl_mvm_d3_iface_iterator, &resume_iter_data); | |
1647 | ||
1648 | if (WARN_ON(resume_iter_data.error || !resume_iter_data.vif)) | |
1649 | goto out_unlock; | |
1650 | ||
1651 | vif = resume_iter_data.vif; | |
1652 | ||
debff618 | 1653 | ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test); |
8ca151b5 JB |
1654 | if (ret) |
1655 | goto out_unlock; | |
1656 | ||
1657 | if (d3_status != IWL_D3_STATUS_ALIVE) { | |
1658 | IWL_INFO(mvm, "Device was reset during suspend\n"); | |
1659 | goto out_unlock; | |
1660 | } | |
1661 | ||
afc66bb7 JB |
1662 | /* query SRAM first in case we want event logging */ |
1663 | iwl_mvm_read_d3_sram(mvm); | |
1664 | ||
6d9d32b8 | 1665 | keep = iwl_mvm_query_wakeup_reasons(mvm, vif); |
78c9df66 EP |
1666 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
1667 | if (keep) | |
1668 | mvm->keep_vif = vif; | |
1669 | #endif | |
7abc4632 JB |
1670 | /* has unlocked the mutex, so skip that */ |
1671 | goto out; | |
8ca151b5 JB |
1672 | |
1673 | out_unlock: | |
1674 | mutex_unlock(&mvm->mutex); | |
1675 | ||
7abc4632 | 1676 | out: |
6d9d32b8 JB |
1677 | if (!test) |
1678 | ieee80211_iterate_active_interfaces_rtnl(mvm->hw, | |
1679 | IEEE80211_IFACE_ITER_NORMAL, | |
1680 | iwl_mvm_d3_disconnect_iter, keep ? vif : NULL); | |
8ca151b5 JB |
1681 | |
1682 | /* return 1 to reconfigure the device */ | |
1683 | set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); | |
1684 | return 1; | |
1685 | } | |
1686 | ||
debff618 JB |
1687 | int iwl_mvm_resume(struct ieee80211_hw *hw) |
1688 | { | |
1689 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1690 | ||
d15a747f EP |
1691 | if (iwl_mvm_is_d0i3_supported(mvm)) { |
1692 | bool exit_now; | |
1693 | ||
1694 | mutex_lock(&mvm->d0i3_suspend_mutex); | |
1695 | __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); | |
1696 | exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP, | |
1697 | &mvm->d0i3_suspend_flags); | |
1698 | mutex_unlock(&mvm->d0i3_suspend_mutex); | |
1699 | if (exit_now) | |
1700 | _iwl_mvm_exit_d0i3(mvm); | |
1701 | return 0; | |
1702 | } | |
1703 | ||
debff618 JB |
1704 | return __iwl_mvm_resume(mvm, false); |
1705 | } | |
1706 | ||
8ca151b5 JB |
1707 | void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) |
1708 | { | |
1709 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1710 | ||
1711 | device_set_wakeup_enable(mvm->trans->dev, enabled); | |
1712 | } | |
debff618 JB |
1713 | |
1714 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
1715 | static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) | |
1716 | { | |
1717 | struct iwl_mvm *mvm = inode->i_private; | |
1718 | int err; | |
1719 | ||
1720 | if (mvm->d3_test_active) | |
1721 | return -EBUSY; | |
1722 | ||
1723 | file->private_data = inode->i_private; | |
1724 | ||
1725 | ieee80211_stop_queues(mvm->hw); | |
1726 | synchronize_net(); | |
1727 | ||
1728 | /* start pseudo D3 */ | |
1729 | rtnl_lock(); | |
1730 | err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); | |
1731 | rtnl_unlock(); | |
1732 | if (err > 0) | |
1733 | err = -EINVAL; | |
1734 | if (err) { | |
1735 | ieee80211_wake_queues(mvm->hw); | |
1736 | return err; | |
1737 | } | |
1738 | mvm->d3_test_active = true; | |
78c9df66 | 1739 | mvm->keep_vif = NULL; |
debff618 JB |
1740 | return 0; |
1741 | } | |
1742 | ||
1743 | static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, | |
1744 | size_t count, loff_t *ppos) | |
1745 | { | |
1746 | struct iwl_mvm *mvm = file->private_data; | |
1747 | u32 pme_asserted; | |
1748 | ||
1749 | while (true) { | |
4ed80a86 EP |
1750 | /* read pme_ptr if available */ |
1751 | if (mvm->d3_test_pme_ptr) { | |
1752 | pme_asserted = iwl_trans_read_mem32(mvm->trans, | |
1753 | mvm->d3_test_pme_ptr); | |
1754 | if (pme_asserted) | |
1755 | break; | |
1756 | } | |
1757 | ||
debff618 JB |
1758 | if (msleep_interruptible(100)) |
1759 | break; | |
1760 | } | |
1761 | ||
1762 | return 0; | |
1763 | } | |
1764 | ||
1765 | static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, | |
1766 | struct ieee80211_vif *vif) | |
1767 | { | |
78c9df66 EP |
1768 | /* skip the one we keep connection on */ |
1769 | if (_data == vif) | |
1770 | return; | |
1771 | ||
debff618 JB |
1772 | if (vif->type == NL80211_IFTYPE_STATION) |
1773 | ieee80211_connection_loss(vif); | |
1774 | } | |
1775 | ||
1776 | static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) | |
1777 | { | |
1778 | struct iwl_mvm *mvm = inode->i_private; | |
1779 | int remaining_time = 10; | |
1780 | ||
1781 | mvm->d3_test_active = false; | |
31ca09dd | 1782 | rtnl_lock(); |
debff618 | 1783 | __iwl_mvm_resume(mvm, true); |
31ca09dd | 1784 | rtnl_unlock(); |
debff618 JB |
1785 | iwl_abort_notification_waits(&mvm->notif_wait); |
1786 | ieee80211_restart_hw(mvm->hw); | |
1787 | ||
1788 | /* wait for restart and disconnect all interfaces */ | |
1789 | while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && | |
1790 | remaining_time > 0) { | |
1791 | remaining_time--; | |
1792 | msleep(1000); | |
1793 | } | |
1794 | ||
1795 | if (remaining_time == 0) | |
1796 | IWL_ERR(mvm, "Timed out waiting for HW restart to finish!\n"); | |
1797 | ||
1798 | ieee80211_iterate_active_interfaces_atomic( | |
1799 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
78c9df66 | 1800 | iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); |
debff618 JB |
1801 | |
1802 | ieee80211_wake_queues(mvm->hw); | |
1803 | ||
1804 | return 0; | |
1805 | } | |
1806 | ||
1807 | const struct file_operations iwl_dbgfs_d3_test_ops = { | |
1808 | .llseek = no_llseek, | |
1809 | .open = iwl_mvm_d3_test_open, | |
1810 | .read = iwl_mvm_d3_test_read, | |
1811 | .release = iwl_mvm_d3_test_release, | |
1812 | }; | |
1813 | #endif |