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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. |
8ca151b5 JB |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of version 2 of the GNU General Public License as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
22 | * USA | |
23 | * | |
24 | * The full GNU General Public License is included in this distribution | |
410dc5aa | 25 | * in the file called COPYING. |
8ca151b5 JB |
26 | * |
27 | * Contact Information: | |
28 | * Intel Linux Wireless <ilw@linux.intel.com> | |
29 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
30 | * | |
31 | * BSD LICENSE | |
32 | * | |
51368bf7 | 33 | * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. |
8ca151b5 JB |
34 | * All rights reserved. |
35 | * | |
36 | * Redistribution and use in source and binary forms, with or without | |
37 | * modification, are permitted provided that the following conditions | |
38 | * are met: | |
39 | * | |
40 | * * Redistributions of source code must retain the above copyright | |
41 | * notice, this list of conditions and the following disclaimer. | |
42 | * * Redistributions in binary form must reproduce the above copyright | |
43 | * notice, this list of conditions and the following disclaimer in | |
44 | * the documentation and/or other materials provided with the | |
45 | * distribution. | |
46 | * * Neither the name Intel Corporation nor the names of its | |
47 | * contributors may be used to endorse or promote products derived | |
48 | * from this software without specific prior written permission. | |
49 | * | |
50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
51 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
52 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
53 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
54 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
55 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
56 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
57 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
58 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
59 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
60 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
61 | * | |
62 | *****************************************************************************/ | |
63 | ||
f444eb10 | 64 | #include <linux/etherdevice.h> |
f0c2646a | 65 | #include <linux/ip.h> |
debff618 | 66 | #include <linux/fs.h> |
8ca151b5 JB |
67 | #include <net/cfg80211.h> |
68 | #include <net/ipv6.h> | |
f0c2646a | 69 | #include <net/tcp.h> |
f7fc5989 | 70 | #include <net/addrconf.h> |
8ca151b5 JB |
71 | #include "iwl-modparams.h" |
72 | #include "fw-api.h" | |
73 | #include "mvm.h" | |
74 | ||
75 | void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, | |
76 | struct ieee80211_vif *vif, | |
77 | struct cfg80211_gtk_rekey_data *data) | |
78 | { | |
79 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
80 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
81 | ||
82 | if (iwlwifi_mod_params.sw_crypto) | |
83 | return; | |
84 | ||
85 | mutex_lock(&mvm->mutex); | |
86 | ||
87 | memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN); | |
88 | memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN); | |
89 | mvmvif->rekey_data.replay_ctr = | |
90 | cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr)); | |
91 | mvmvif->rekey_data.valid = true; | |
92 | ||
93 | mutex_unlock(&mvm->mutex); | |
94 | } | |
95 | ||
96 | #if IS_ENABLED(CONFIG_IPV6) | |
97 | void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, | |
98 | struct ieee80211_vif *vif, | |
99 | struct inet6_dev *idev) | |
100 | { | |
101 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
102 | struct inet6_ifaddr *ifa; | |
103 | int idx = 0; | |
104 | ||
a3777e0f | 105 | read_lock_bh(&idev->lock); |
8ca151b5 JB |
106 | list_for_each_entry(ifa, &idev->addr_list, if_list) { |
107 | mvmvif->target_ipv6_addrs[idx] = ifa->addr; | |
108 | idx++; | |
5369d6c1 | 109 | if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX) |
8ca151b5 JB |
110 | break; |
111 | } | |
a3777e0f | 112 | read_unlock_bh(&idev->lock); |
8ca151b5 JB |
113 | |
114 | mvmvif->num_target_ipv6_addrs = idx; | |
115 | } | |
116 | #endif | |
117 | ||
118 | void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, | |
119 | struct ieee80211_vif *vif, int idx) | |
120 | { | |
121 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
122 | ||
123 | mvmvif->tx_key_idx = idx; | |
124 | } | |
125 | ||
126 | static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) | |
127 | { | |
128 | int i; | |
129 | ||
130 | for (i = 0; i < IWL_P1K_SIZE; i++) | |
131 | out[i] = cpu_to_le16(p1k[i]); | |
132 | } | |
133 | ||
134 | struct wowlan_key_data { | |
135 | struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc; | |
136 | struct iwl_wowlan_tkip_params_cmd *tkip; | |
137 | bool error, use_rsc_tsc, use_tkip; | |
5312e54d | 138 | int wep_key_idx; |
8ca151b5 JB |
139 | }; |
140 | ||
141 | static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, | |
142 | struct ieee80211_vif *vif, | |
143 | struct ieee80211_sta *sta, | |
144 | struct ieee80211_key_conf *key, | |
145 | void *_data) | |
146 | { | |
147 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
148 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
149 | struct wowlan_key_data *data = _data; | |
150 | struct aes_sc *aes_sc, *aes_tx_sc = NULL; | |
151 | struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; | |
152 | struct iwl_p1k_cache *rx_p1ks; | |
153 | u8 *rx_mic_key; | |
154 | struct ieee80211_key_seq seq; | |
155 | u32 cur_rx_iv32 = 0; | |
156 | u16 p1k[IWL_P1K_SIZE]; | |
157 | int ret, i; | |
158 | ||
159 | mutex_lock(&mvm->mutex); | |
160 | ||
161 | switch (key->cipher) { | |
162 | case WLAN_CIPHER_SUITE_WEP40: | |
163 | case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ | |
164 | struct { | |
165 | struct iwl_mvm_wep_key_cmd wep_key_cmd; | |
166 | struct iwl_mvm_wep_key wep_key; | |
167 | } __packed wkc = { | |
168 | .wep_key_cmd.mac_id_n_color = | |
169 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
170 | mvmvif->color)), | |
171 | .wep_key_cmd.num_keys = 1, | |
172 | /* firmware sets STA_KEY_FLG_WEP_13BYTES */ | |
173 | .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, | |
174 | .wep_key.key_index = key->keyidx, | |
175 | .wep_key.key_size = key->keylen, | |
176 | }; | |
177 | ||
178 | /* | |
179 | * This will fail -- the key functions don't set support | |
180 | * pairwise WEP keys. However, that's better than silently | |
181 | * failing WoWLAN. Or maybe not? | |
182 | */ | |
183 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) | |
184 | break; | |
185 | ||
186 | memcpy(&wkc.wep_key.key[3], key->key, key->keylen); | |
187 | if (key->keyidx == mvmvif->tx_key_idx) { | |
188 | /* TX key must be at offset 0 */ | |
189 | wkc.wep_key.key_offset = 0; | |
190 | } else { | |
191 | /* others start at 1 */ | |
5312e54d JB |
192 | data->wep_key_idx++; |
193 | wkc.wep_key.key_offset = data->wep_key_idx; | |
8ca151b5 JB |
194 | } |
195 | ||
196 | ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, CMD_SYNC, | |
197 | sizeof(wkc), &wkc); | |
198 | data->error = ret != 0; | |
199 | ||
f444eb10 JB |
200 | mvm->ptk_ivlen = key->iv_len; |
201 | mvm->ptk_icvlen = key->icv_len; | |
202 | mvm->gtk_ivlen = key->iv_len; | |
203 | mvm->gtk_icvlen = key->icv_len; | |
204 | ||
8ca151b5 JB |
205 | /* don't upload key again */ |
206 | goto out_unlock; | |
207 | } | |
208 | default: | |
209 | data->error = true; | |
210 | goto out_unlock; | |
211 | case WLAN_CIPHER_SUITE_AES_CMAC: | |
212 | /* | |
213 | * Ignore CMAC keys -- the WoWLAN firmware doesn't support them | |
214 | * but we also shouldn't abort suspend due to that. It does have | |
215 | * support for the IGTK key renewal, but doesn't really use the | |
216 | * IGTK for anything. This means we could spuriously wake up or | |
217 | * be deauthenticated, but that was considered acceptable. | |
218 | */ | |
219 | goto out_unlock; | |
220 | case WLAN_CIPHER_SUITE_TKIP: | |
221 | if (sta) { | |
222 | tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; | |
223 | tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc; | |
224 | ||
225 | rx_p1ks = data->tkip->rx_uni; | |
226 | ||
227 | ieee80211_get_key_tx_seq(key, &seq); | |
228 | tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16); | |
229 | tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32); | |
230 | ||
231 | ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k); | |
232 | iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k); | |
233 | ||
234 | memcpy(data->tkip->mic_keys.tx, | |
235 | &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], | |
236 | IWL_MIC_KEY_SIZE); | |
237 | ||
238 | rx_mic_key = data->tkip->mic_keys.rx_unicast; | |
239 | } else { | |
240 | tkip_sc = | |
241 | data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; | |
242 | rx_p1ks = data->tkip->rx_multi; | |
243 | rx_mic_key = data->tkip->mic_keys.rx_mcast; | |
244 | } | |
245 | ||
246 | /* | |
247 | * For non-QoS this relies on the fact that both the uCode and | |
248 | * mac80211 use TID 0 (as they need to to avoid replay attacks) | |
249 | * for checking the IV in the frames. | |
250 | */ | |
251 | for (i = 0; i < IWL_NUM_RSC; i++) { | |
252 | ieee80211_get_key_rx_seq(key, i, &seq); | |
253 | tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); | |
254 | tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); | |
255 | /* wrapping isn't allowed, AP must rekey */ | |
256 | if (seq.tkip.iv32 > cur_rx_iv32) | |
257 | cur_rx_iv32 = seq.tkip.iv32; | |
258 | } | |
259 | ||
260 | ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, | |
261 | cur_rx_iv32, p1k); | |
262 | iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); | |
263 | ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, | |
264 | cur_rx_iv32 + 1, p1k); | |
265 | iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); | |
266 | ||
267 | memcpy(rx_mic_key, | |
268 | &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], | |
269 | IWL_MIC_KEY_SIZE); | |
270 | ||
271 | data->use_tkip = true; | |
272 | data->use_rsc_tsc = true; | |
273 | break; | |
274 | case WLAN_CIPHER_SUITE_CCMP: | |
275 | if (sta) { | |
276 | u8 *pn = seq.ccmp.pn; | |
277 | ||
278 | aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; | |
279 | aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc; | |
280 | ||
281 | ieee80211_get_key_tx_seq(key, &seq); | |
282 | aes_tx_sc->pn = cpu_to_le64((u64)pn[5] | | |
283 | ((u64)pn[4] << 8) | | |
284 | ((u64)pn[3] << 16) | | |
285 | ((u64)pn[2] << 24) | | |
286 | ((u64)pn[1] << 32) | | |
287 | ((u64)pn[0] << 40)); | |
288 | } else { | |
289 | aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; | |
290 | } | |
291 | ||
292 | /* | |
293 | * For non-QoS this relies on the fact that both the uCode and | |
294 | * mac80211 use TID 0 for checking the IV in the frames. | |
295 | */ | |
296 | for (i = 0; i < IWL_NUM_RSC; i++) { | |
297 | u8 *pn = seq.ccmp.pn; | |
298 | ||
299 | ieee80211_get_key_rx_seq(key, i, &seq); | |
300 | aes_sc->pn = cpu_to_le64((u64)pn[5] | | |
301 | ((u64)pn[4] << 8) | | |
302 | ((u64)pn[3] << 16) | | |
303 | ((u64)pn[2] << 24) | | |
304 | ((u64)pn[1] << 32) | | |
305 | ((u64)pn[0] << 40)); | |
306 | } | |
307 | data->use_rsc_tsc = true; | |
308 | break; | |
309 | } | |
310 | ||
311 | /* | |
312 | * The D3 firmware hardcodes the key offset 0 as the key it uses | |
313 | * to transmit packets to the AP, i.e. the PTK. | |
314 | */ | |
315 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { | |
316 | key->hw_key_idx = 0; | |
f444eb10 JB |
317 | mvm->ptk_ivlen = key->iv_len; |
318 | mvm->ptk_icvlen = key->icv_len; | |
8ca151b5 | 319 | } else { |
5312e54d JB |
320 | /* |
321 | * firmware only supports TSC/RSC for a single key, | |
322 | * so if there are multiple keep overwriting them | |
323 | * with new ones -- this relies on mac80211 doing | |
324 | * list_add_tail(). | |
325 | */ | |
326 | key->hw_key_idx = 1; | |
f444eb10 JB |
327 | mvm->gtk_ivlen = key->iv_len; |
328 | mvm->gtk_icvlen = key->icv_len; | |
8ca151b5 JB |
329 | } |
330 | ||
331 | ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, true); | |
332 | data->error = ret != 0; | |
333 | out_unlock: | |
334 | mutex_unlock(&mvm->mutex); | |
335 | } | |
336 | ||
337 | static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, | |
338 | struct cfg80211_wowlan *wowlan) | |
339 | { | |
340 | struct iwl_wowlan_patterns_cmd *pattern_cmd; | |
341 | struct iwl_host_cmd cmd = { | |
342 | .id = WOWLAN_PATTERNS, | |
343 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
344 | .flags = CMD_SYNC, | |
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, }, | |
521 | .flags = CMD_SYNC, | |
522 | }; | |
523 | int ret; | |
524 | ||
525 | if (!tcp) | |
526 | return 0; | |
527 | ||
528 | cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); | |
529 | if (!cfg) | |
530 | return -ENOMEM; | |
531 | cmd.data[0] = cfg; | |
532 | ||
533 | cfg->max_syn_retries = 10; | |
534 | cfg->max_data_retries = 10; | |
535 | cfg->tcp_syn_ack_timeout = 1; /* seconds */ | |
536 | cfg->tcp_ack_timeout = 1; /* seconds */ | |
537 | ||
538 | /* SYN (TX) */ | |
539 | iwl_mvm_build_tcp_packet( | |
b002c7e1 | 540 | vif, tcp, cfg->syn_tx.data, NULL, |
f0c2646a JB |
541 | &cfg->syn_tx.info.tcp_pseudo_header_checksum, |
542 | MVM_TCP_TX_SYN); | |
543 | cfg->syn_tx.info.tcp_payload_length = 0; | |
544 | ||
545 | /* SYN/ACK (RX) */ | |
546 | iwl_mvm_build_tcp_packet( | |
b002c7e1 | 547 | vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask, |
f0c2646a JB |
548 | &cfg->synack_rx.info.tcp_pseudo_header_checksum, |
549 | MVM_TCP_RX_SYNACK); | |
550 | cfg->synack_rx.info.tcp_payload_length = 0; | |
551 | ||
552 | /* KEEPALIVE/ACK (TX) */ | |
553 | iwl_mvm_build_tcp_packet( | |
b002c7e1 | 554 | vif, tcp, cfg->keepalive_tx.data, NULL, |
f0c2646a JB |
555 | &cfg->keepalive_tx.info.tcp_pseudo_header_checksum, |
556 | MVM_TCP_TX_DATA); | |
557 | cfg->keepalive_tx.info.tcp_payload_length = | |
558 | cpu_to_le16(tcp->payload_len); | |
559 | cfg->sequence_number_offset = tcp->payload_seq.offset; | |
560 | /* length must be 0..4, the field is little endian */ | |
561 | cfg->sequence_number_length = tcp->payload_seq.len; | |
562 | cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start); | |
563 | cfg->keepalive_interval = cpu_to_le16(tcp->data_interval); | |
564 | if (tcp->payload_tok.len) { | |
565 | cfg->token_offset = tcp->payload_tok.offset; | |
566 | cfg->token_length = tcp->payload_tok.len; | |
567 | cfg->num_tokens = | |
568 | cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len); | |
569 | memcpy(cfg->tokens, tcp->payload_tok.token_stream, | |
570 | tcp->tokens_size); | |
571 | } else { | |
572 | /* set tokens to max value to almost never run out */ | |
573 | cfg->num_tokens = cpu_to_le16(65535); | |
574 | } | |
575 | ||
576 | /* ACK (RX) */ | |
577 | iwl_mvm_build_tcp_packet( | |
b002c7e1 | 578 | vif, tcp, cfg->keepalive_ack_rx.data, |
f0c2646a JB |
579 | cfg->keepalive_ack_rx.rx_mask, |
580 | &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum, | |
581 | MVM_TCP_RX_ACK); | |
582 | cfg->keepalive_ack_rx.info.tcp_payload_length = 0; | |
583 | ||
584 | /* WAKEUP (RX) */ | |
585 | iwl_mvm_build_tcp_packet( | |
b002c7e1 | 586 | vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask, |
f0c2646a JB |
587 | &cfg->wake_rx.info.tcp_pseudo_header_checksum, |
588 | MVM_TCP_RX_WAKE); | |
589 | cfg->wake_rx.info.tcp_payload_length = | |
590 | cpu_to_le16(tcp->wake_len); | |
591 | ||
592 | /* FIN */ | |
593 | iwl_mvm_build_tcp_packet( | |
b002c7e1 | 594 | vif, tcp, cfg->fin_tx.data, NULL, |
f0c2646a JB |
595 | &cfg->fin_tx.info.tcp_pseudo_header_checksum, |
596 | MVM_TCP_TX_FIN); | |
597 | cfg->fin_tx.info.tcp_payload_length = 0; | |
598 | ||
599 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
600 | kfree(cfg); | |
601 | ||
602 | return ret; | |
603 | } | |
604 | ||
8ca151b5 JB |
605 | struct iwl_d3_iter_data { |
606 | struct iwl_mvm *mvm; | |
607 | struct ieee80211_vif *vif; | |
608 | bool error; | |
609 | }; | |
610 | ||
611 | static void iwl_mvm_d3_iface_iterator(void *_data, u8 *mac, | |
612 | struct ieee80211_vif *vif) | |
613 | { | |
614 | struct iwl_d3_iter_data *data = _data; | |
615 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
616 | ||
617 | if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) | |
618 | return; | |
619 | ||
620 | if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) | |
621 | return; | |
622 | ||
623 | if (data->vif) { | |
624 | IWL_ERR(data->mvm, "More than one managed interface active!\n"); | |
625 | data->error = true; | |
626 | return; | |
627 | } | |
628 | ||
629 | data->vif = vif; | |
630 | } | |
631 | ||
632 | static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
633 | struct ieee80211_sta *ap_sta) | |
634 | { | |
635 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
636 | struct ieee80211_chanctx_conf *ctx; | |
637 | u8 chains_static, chains_dynamic; | |
638 | struct cfg80211_chan_def chandef; | |
639 | int ret, i; | |
640 | struct iwl_binding_cmd binding_cmd = {}; | |
641 | struct iwl_time_quota_cmd quota_cmd = {}; | |
642 | u32 status; | |
643 | ||
644 | /* add back the PHY */ | |
645 | if (WARN_ON(!mvmvif->phy_ctxt)) | |
646 | return -EINVAL; | |
647 | ||
648 | rcu_read_lock(); | |
649 | ctx = rcu_dereference(vif->chanctx_conf); | |
650 | if (WARN_ON(!ctx)) { | |
651 | rcu_read_unlock(); | |
652 | return -EINVAL; | |
653 | } | |
654 | chandef = ctx->def; | |
655 | chains_static = ctx->rx_chains_static; | |
656 | chains_dynamic = ctx->rx_chains_dynamic; | |
657 | rcu_read_unlock(); | |
658 | ||
659 | ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef, | |
660 | chains_static, chains_dynamic); | |
661 | if (ret) | |
662 | return ret; | |
663 | ||
664 | /* add back the MAC */ | |
665 | mvmvif->uploaded = false; | |
666 | ||
667 | if (WARN_ON(!vif->bss_conf.assoc)) | |
668 | return -EINVAL; | |
669 | /* hack */ | |
670 | vif->bss_conf.assoc = false; | |
671 | ret = iwl_mvm_mac_ctxt_add(mvm, vif); | |
672 | vif->bss_conf.assoc = true; | |
673 | if (ret) | |
674 | return ret; | |
675 | ||
676 | /* add back binding - XXX refactor? */ | |
677 | binding_cmd.id_and_color = | |
678 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, | |
679 | mvmvif->phy_ctxt->color)); | |
680 | binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); | |
681 | binding_cmd.phy = | |
682 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, | |
683 | mvmvif->phy_ctxt->color)); | |
684 | binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
685 | mvmvif->color)); | |
686 | for (i = 1; i < MAX_MACS_IN_BINDING; i++) | |
687 | binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); | |
688 | ||
689 | status = 0; | |
690 | ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, | |
691 | sizeof(binding_cmd), &binding_cmd, | |
692 | &status); | |
693 | if (ret) { | |
694 | IWL_ERR(mvm, "Failed to add binding: %d\n", ret); | |
695 | return ret; | |
696 | } | |
697 | ||
698 | if (status) { | |
699 | IWL_ERR(mvm, "Binding command failed: %u\n", status); | |
700 | return -EIO; | |
701 | } | |
702 | ||
7a453973 | 703 | ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false); |
8ca151b5 JB |
704 | if (ret) |
705 | return ret; | |
706 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta); | |
707 | ||
708 | ret = iwl_mvm_mac_ctxt_changed(mvm, vif); | |
709 | if (ret) | |
710 | return ret; | |
711 | ||
712 | /* and some quota */ | |
713 | quota_cmd.quotas[0].id_and_color = | |
714 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, | |
715 | mvmvif->phy_ctxt->color)); | |
9a3daf82 EG |
716 | quota_cmd.quotas[0].quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); |
717 | quota_cmd.quotas[0].max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); | |
8ca151b5 JB |
718 | |
719 | for (i = 1; i < MAX_BINDINGS; i++) | |
720 | quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID); | |
721 | ||
722 | ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, CMD_SYNC, | |
723 | sizeof(quota_cmd), "a_cmd); | |
724 | if (ret) | |
725 | IWL_ERR(mvm, "Failed to send quota: %d\n", ret); | |
726 | ||
727 | return 0; | |
728 | } | |
729 | ||
4ac6cb59 JB |
730 | static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, |
731 | struct ieee80211_vif *vif) | |
732 | { | |
6d9d32b8 JB |
733 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
734 | struct iwl_nonqos_seq_query_cmd query_cmd = { | |
735 | .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), | |
736 | .mac_id_n_color = | |
737 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
738 | mvmvif->color)), | |
739 | }; | |
4ac6cb59 JB |
740 | struct iwl_host_cmd cmd = { |
741 | .id = NON_QOS_TX_COUNTER_CMD, | |
742 | .flags = CMD_SYNC | CMD_WANT_SKB, | |
743 | }; | |
744 | int err; | |
745 | u32 size; | |
746 | ||
3afec639 EG |
747 | cmd.data[0] = &query_cmd; |
748 | cmd.len[0] = sizeof(query_cmd); | |
6d9d32b8 | 749 | |
4ac6cb59 JB |
750 | err = iwl_mvm_send_cmd(mvm, &cmd); |
751 | if (err) | |
752 | return err; | |
753 | ||
65b30348 | 754 | size = iwl_rx_packet_payload_len(cmd.resp_pkt); |
6d9d32b8 | 755 | if (size < sizeof(__le16)) { |
4ac6cb59 | 756 | err = -EINVAL; |
6d9d32b8 JB |
757 | } else { |
758 | err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); | |
3afec639 EG |
759 | /* firmware returns next, not last-used seqno */ |
760 | err = (u16) (err - 0x10); | |
6d9d32b8 | 761 | } |
4ac6cb59 JB |
762 | |
763 | iwl_free_resp(&cmd); | |
764 | return err; | |
765 | } | |
766 | ||
6d9d32b8 JB |
767 | void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) |
768 | { | |
769 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
770 | struct iwl_nonqos_seq_query_cmd query_cmd = { | |
771 | .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), | |
772 | .mac_id_n_color = | |
773 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
774 | mvmvif->color)), | |
775 | .value = cpu_to_le16(mvmvif->seqno), | |
776 | }; | |
777 | ||
778 | /* return if called during restart, not resume from D3 */ | |
779 | if (!mvmvif->seqno_valid) | |
780 | return; | |
781 | ||
782 | mvmvif->seqno_valid = false; | |
783 | ||
6d9d32b8 JB |
784 | if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, CMD_SYNC, |
785 | sizeof(query_cmd), &query_cmd)) | |
786 | IWL_ERR(mvm, "failed to set non-QoS seqno\n"); | |
787 | } | |
788 | ||
1a95c8df EP |
789 | static int |
790 | iwl_mvm_send_wowlan_config_cmd(struct iwl_mvm *mvm, | |
791 | const struct iwl_wowlan_config_cmd_v3 *cmd) | |
792 | { | |
793 | /* start only with the v2 part of the command */ | |
794 | u16 cmd_len = sizeof(cmd->common); | |
795 | ||
796 | if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_WOWLAN_CONFIG_TID) | |
797 | cmd_len = sizeof(*cmd); | |
798 | ||
799 | return iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, CMD_SYNC, | |
800 | cmd_len, cmd); | |
801 | } | |
802 | ||
debff618 JB |
803 | static int __iwl_mvm_suspend(struct ieee80211_hw *hw, |
804 | struct cfg80211_wowlan *wowlan, | |
805 | bool test) | |
8ca151b5 JB |
806 | { |
807 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
808 | struct iwl_d3_iter_data suspend_iter_data = { | |
809 | .mvm = mvm, | |
810 | }; | |
811 | struct ieee80211_vif *vif; | |
812 | struct iwl_mvm_vif *mvmvif; | |
813 | struct ieee80211_sta *ap_sta; | |
814 | struct iwl_mvm_sta *mvm_ap_sta; | |
1a95c8df | 815 | struct iwl_wowlan_config_cmd_v3 wowlan_config_cmd = {}; |
8ca151b5 JB |
816 | struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {}; |
817 | struct iwl_wowlan_tkip_params_cmd tkip_cmd = {}; | |
debff618 | 818 | struct iwl_d3_manager_config d3_cfg_cmd_data = { |
c920487d JB |
819 | /* |
820 | * Program the minimum sleep time to 10 seconds, as many | |
821 | * platforms have issues processing a wakeup signal while | |
822 | * still being in the process of suspending. | |
823 | */ | |
824 | .min_sleep_time = cpu_to_le32(10 * 1000 * 1000), | |
825 | }; | |
debff618 JB |
826 | struct iwl_host_cmd d3_cfg_cmd = { |
827 | .id = D3_CONFIG_CMD, | |
828 | .flags = CMD_SYNC | CMD_WANT_SKB, | |
829 | .data[0] = &d3_cfg_cmd_data, | |
830 | .len[0] = sizeof(d3_cfg_cmd_data), | |
831 | }; | |
8ca151b5 JB |
832 | struct wowlan_key_data key_data = { |
833 | .use_rsc_tsc = false, | |
834 | .tkip = &tkip_cmd, | |
835 | .use_tkip = false, | |
836 | }; | |
1a95c8df | 837 | int ret; |
debff618 | 838 | int len __maybe_unused; |
8ca151b5 | 839 | |
debff618 JB |
840 | if (!wowlan) { |
841 | /* | |
842 | * mac80211 shouldn't get here, but for D3 test | |
843 | * it doesn't warrant a warning | |
844 | */ | |
845 | WARN_ON(!test); | |
8ca151b5 | 846 | return -EINVAL; |
debff618 | 847 | } |
8ca151b5 JB |
848 | |
849 | key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); | |
850 | if (!key_data.rsc_tsc) | |
851 | return -ENOMEM; | |
852 | ||
853 | mutex_lock(&mvm->mutex); | |
854 | ||
8ca151b5 JB |
855 | /* see if there's only a single BSS vif and it's associated */ |
856 | ieee80211_iterate_active_interfaces_atomic( | |
857 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
858 | iwl_mvm_d3_iface_iterator, &suspend_iter_data); | |
859 | ||
860 | if (suspend_iter_data.error || !suspend_iter_data.vif) { | |
861 | ret = 1; | |
862 | goto out_noreset; | |
863 | } | |
864 | ||
865 | vif = suspend_iter_data.vif; | |
866 | mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
867 | ||
868 | ap_sta = rcu_dereference_protected( | |
869 | mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], | |
870 | lockdep_is_held(&mvm->mutex)); | |
871 | if (IS_ERR_OR_NULL(ap_sta)) { | |
872 | ret = -EINVAL; | |
873 | goto out_noreset; | |
874 | } | |
875 | ||
876 | mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; | |
877 | ||
1a95c8df | 878 | /* TODO: wowlan_config_cmd.common.wowlan_ba_teardown_tids */ |
8ca151b5 | 879 | |
1a95c8df EP |
880 | wowlan_config_cmd.common.is_11n_connection = |
881 | ap_sta->ht_cap.ht_supported; | |
8ca151b5 | 882 | |
4ac6cb59 JB |
883 | /* Query the last used seqno and set it */ |
884 | ret = iwl_mvm_get_last_nonqos_seq(mvm, vif); | |
885 | if (ret < 0) | |
886 | goto out_noreset; | |
1a95c8df | 887 | wowlan_config_cmd.common.non_qos_seq = cpu_to_le16(ret); |
8ca151b5 | 888 | |
1a95c8df | 889 | iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, &wowlan_config_cmd.common); |
8ca151b5 JB |
890 | |
891 | if (wowlan->disconnect) | |
1a95c8df | 892 | wowlan_config_cmd.common.wakeup_filter |= |
8ca151b5 JB |
893 | cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | |
894 | IWL_WOWLAN_WAKEUP_LINK_CHANGE); | |
895 | if (wowlan->magic_pkt) | |
1a95c8df | 896 | wowlan_config_cmd.common.wakeup_filter |= |
8ca151b5 JB |
897 | cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); |
898 | if (wowlan->gtk_rekey_failure) | |
1a95c8df | 899 | wowlan_config_cmd.common.wakeup_filter |= |
8ca151b5 JB |
900 | cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); |
901 | if (wowlan->eap_identity_req) | |
1a95c8df | 902 | wowlan_config_cmd.common.wakeup_filter |= |
8ca151b5 JB |
903 | cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); |
904 | if (wowlan->four_way_handshake) | |
1a95c8df | 905 | wowlan_config_cmd.common.wakeup_filter |= |
8ca151b5 JB |
906 | cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); |
907 | if (wowlan->n_patterns) | |
1a95c8df | 908 | wowlan_config_cmd.common.wakeup_filter |= |
8ca151b5 JB |
909 | cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); |
910 | ||
911 | if (wowlan->rfkill_release) | |
1a95c8df | 912 | wowlan_config_cmd.common.wakeup_filter |= |
8ca151b5 JB |
913 | cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); |
914 | ||
f0c2646a JB |
915 | if (wowlan->tcp) { |
916 | /* | |
6039f3e1 JB |
917 | * Set the "link change" (really "link lost") flag as well |
918 | * since that implies losing the TCP connection. | |
f0c2646a | 919 | */ |
1a95c8df | 920 | wowlan_config_cmd.common.wakeup_filter |= |
f0c2646a JB |
921 | cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | |
922 | IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | | |
923 | IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | | |
924 | IWL_WOWLAN_WAKEUP_LINK_CHANGE); | |
925 | } | |
926 | ||
8ca151b5 JB |
927 | iwl_mvm_cancel_scan(mvm); |
928 | ||
929 | iwl_trans_stop_device(mvm->trans); | |
930 | ||
931 | /* | |
932 | * Set the HW restart bit -- this is mostly true as we're | |
933 | * going to load new firmware and reprogram that, though | |
934 | * the reprogramming is going to be manual to avoid adding | |
935 | * all the MACs that aren't support. | |
936 | * We don't have to clear up everything though because the | |
937 | * reprogramming is manual. When we resume, we'll actually | |
938 | * go through a proper restart sequence again to switch | |
939 | * back to the runtime firmware image. | |
940 | */ | |
941 | set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); | |
942 | ||
943 | /* We reprogram keys and shouldn't allocate new key indices */ | |
944 | memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); | |
945 | ||
f444eb10 JB |
946 | mvm->ptk_ivlen = 0; |
947 | mvm->ptk_icvlen = 0; | |
948 | mvm->ptk_ivlen = 0; | |
949 | mvm->ptk_icvlen = 0; | |
950 | ||
8ca151b5 JB |
951 | ret = iwl_mvm_load_d3_fw(mvm); |
952 | if (ret) | |
953 | goto out; | |
954 | ||
955 | ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); | |
956 | if (ret) | |
957 | goto out; | |
958 | ||
959 | if (!iwlwifi_mod_params.sw_crypto) { | |
960 | /* | |
961 | * This needs to be unlocked due to lock ordering | |
962 | * constraints. Since we're in the suspend path | |
963 | * that isn't really a problem though. | |
964 | */ | |
965 | mutex_unlock(&mvm->mutex); | |
966 | ieee80211_iter_keys(mvm->hw, vif, | |
967 | iwl_mvm_wowlan_program_keys, | |
968 | &key_data); | |
969 | mutex_lock(&mvm->mutex); | |
970 | if (key_data.error) { | |
971 | ret = -EIO; | |
972 | goto out; | |
973 | } | |
974 | ||
975 | if (key_data.use_rsc_tsc) { | |
976 | struct iwl_host_cmd rsc_tsc_cmd = { | |
977 | .id = WOWLAN_TSC_RSC_PARAM, | |
978 | .flags = CMD_SYNC, | |
979 | .data[0] = key_data.rsc_tsc, | |
980 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
981 | .len[0] = sizeof(*key_data.rsc_tsc), | |
982 | }; | |
983 | ||
984 | ret = iwl_mvm_send_cmd(mvm, &rsc_tsc_cmd); | |
985 | if (ret) | |
986 | goto out; | |
987 | } | |
988 | ||
989 | if (key_data.use_tkip) { | |
990 | ret = iwl_mvm_send_cmd_pdu(mvm, | |
991 | WOWLAN_TKIP_PARAM, | |
992 | CMD_SYNC, sizeof(tkip_cmd), | |
993 | &tkip_cmd); | |
994 | if (ret) | |
995 | goto out; | |
996 | } | |
997 | ||
998 | if (mvmvif->rekey_data.valid) { | |
999 | memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd)); | |
1000 | memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, | |
1001 | NL80211_KCK_LEN); | |
1002 | kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN); | |
1003 | memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, | |
1004 | NL80211_KEK_LEN); | |
1005 | kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN); | |
1006 | kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; | |
1007 | ||
1008 | ret = iwl_mvm_send_cmd_pdu(mvm, | |
1009 | WOWLAN_KEK_KCK_MATERIAL, | |
1010 | CMD_SYNC, | |
1011 | sizeof(kek_kck_cmd), | |
1012 | &kek_kck_cmd); | |
1013 | if (ret) | |
1014 | goto out; | |
1015 | } | |
1016 | } | |
1017 | ||
1a95c8df | 1018 | ret = iwl_mvm_send_wowlan_config_cmd(mvm, &wowlan_config_cmd); |
8ca151b5 JB |
1019 | if (ret) |
1020 | goto out; | |
1021 | ||
1022 | ret = iwl_mvm_send_patterns(mvm, wowlan); | |
1023 | if (ret) | |
1024 | goto out; | |
1025 | ||
8bd22e7b | 1026 | ret = iwl_mvm_send_proto_offload(mvm, vif, false, CMD_SYNC); |
8ca151b5 JB |
1027 | if (ret) |
1028 | goto out; | |
1029 | ||
f0c2646a JB |
1030 | ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp); |
1031 | if (ret) | |
1032 | goto out; | |
1033 | ||
c1cb92fc | 1034 | ret = iwl_mvm_power_update_device(mvm); |
64b928c4 AB |
1035 | if (ret) |
1036 | goto out; | |
1037 | ||
e5e7aa8e | 1038 | ret = iwl_mvm_power_update_mac(mvm, vif); |
ee1e8422 AB |
1039 | if (ret) |
1040 | goto out; | |
1041 | ||
b0114714 JB |
1042 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
1043 | if (mvm->d3_wake_sysassert) | |
1044 | d3_cfg_cmd_data.wakeup_flags |= | |
1045 | cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR); | |
1046 | #endif | |
1047 | ||
8ca151b5 | 1048 | /* must be last -- this switches firmware state */ |
debff618 | 1049 | ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd); |
8ca151b5 JB |
1050 | if (ret) |
1051 | goto out; | |
debff618 | 1052 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
65b30348 JB |
1053 | len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt); |
1054 | if (len >= sizeof(u32)) { | |
debff618 JB |
1055 | mvm->d3_test_pme_ptr = |
1056 | le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data); | |
debff618 JB |
1057 | } |
1058 | #endif | |
1059 | iwl_free_resp(&d3_cfg_cmd); | |
8ca151b5 JB |
1060 | |
1061 | clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); | |
1062 | ||
debff618 | 1063 | iwl_trans_d3_suspend(mvm->trans, test); |
8ca151b5 | 1064 | out: |
8ca151b5 JB |
1065 | if (ret < 0) |
1066 | ieee80211_restart_hw(mvm->hw); | |
b70ab727 LC |
1067 | out_noreset: |
1068 | kfree(key_data.rsc_tsc); | |
8ca151b5 JB |
1069 | |
1070 | mutex_unlock(&mvm->mutex); | |
1071 | ||
1072 | return ret; | |
1073 | } | |
1074 | ||
debff618 JB |
1075 | int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) |
1076 | { | |
d15a747f EP |
1077 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); |
1078 | ||
1079 | if (iwl_mvm_is_d0i3_supported(mvm)) { | |
1080 | mutex_lock(&mvm->d0i3_suspend_mutex); | |
1081 | __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); | |
1082 | mutex_unlock(&mvm->d0i3_suspend_mutex); | |
1083 | return 0; | |
1084 | } | |
1085 | ||
debff618 JB |
1086 | return __iwl_mvm_suspend(hw, wowlan, false); |
1087 | } | |
1088 | ||
6d9d32b8 JB |
1089 | /* converted data from the different status responses */ |
1090 | struct iwl_wowlan_status_data { | |
1091 | u16 pattern_number; | |
1092 | u16 qos_seq_ctr[8]; | |
1093 | u32 wakeup_reasons; | |
1094 | u32 wake_packet_length; | |
1095 | u32 wake_packet_bufsize; | |
1096 | const u8 *wake_packet; | |
1097 | }; | |
1098 | ||
7abc4632 JB |
1099 | static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm, |
1100 | struct ieee80211_vif *vif, | |
6d9d32b8 | 1101 | struct iwl_wowlan_status_data *status) |
9b26b500 | 1102 | { |
7abc4632 | 1103 | struct sk_buff *pkt = NULL; |
9b26b500 JB |
1104 | struct cfg80211_wowlan_wakeup wakeup = { |
1105 | .pattern_idx = -1, | |
1106 | }; | |
1107 | struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; | |
6d9d32b8 | 1108 | u32 reasons = status->wakeup_reasons; |
9b26b500 JB |
1109 | |
1110 | if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { | |
1111 | wakeup_report = NULL; | |
1112 | goto report; | |
1113 | } | |
1114 | ||
f444eb10 | 1115 | if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) |
9b26b500 | 1116 | wakeup.magic_pkt = true; |
9b26b500 | 1117 | |
f444eb10 | 1118 | if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) |
9b26b500 | 1119 | wakeup.pattern_idx = |
6d9d32b8 | 1120 | status->pattern_number; |
9b26b500 JB |
1121 | |
1122 | if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | | |
1123 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) | |
1124 | wakeup.disconnect = true; | |
1125 | ||
f444eb10 | 1126 | if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) |
9b26b500 | 1127 | wakeup.gtk_rekey_failure = true; |
9b26b500 | 1128 | |
f444eb10 | 1129 | if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) |
9b26b500 | 1130 | wakeup.rfkill_release = true; |
9b26b500 | 1131 | |
f444eb10 | 1132 | if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) |
9b26b500 | 1133 | wakeup.eap_identity_req = true; |
9b26b500 | 1134 | |
f444eb10 | 1135 | if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) |
9b26b500 | 1136 | wakeup.four_way_handshake = true; |
9b26b500 | 1137 | |
f0c2646a JB |
1138 | if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) |
1139 | wakeup.tcp_connlost = true; | |
1140 | ||
1141 | if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) | |
1142 | wakeup.tcp_nomoretokens = true; | |
1143 | ||
1144 | if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) | |
1145 | wakeup.tcp_match = true; | |
1146 | ||
9b26b500 | 1147 | if (status->wake_packet_bufsize) { |
6d9d32b8 JB |
1148 | int pktsize = status->wake_packet_bufsize; |
1149 | int pktlen = status->wake_packet_length; | |
f444eb10 JB |
1150 | const u8 *pktdata = status->wake_packet; |
1151 | struct ieee80211_hdr *hdr = (void *)pktdata; | |
1152 | int truncated = pktlen - pktsize; | |
1153 | ||
1154 | /* this would be a firmware bug */ | |
1155 | if (WARN_ON_ONCE(truncated < 0)) | |
1156 | truncated = 0; | |
1157 | ||
1158 | if (ieee80211_is_data(hdr->frame_control)) { | |
1159 | int hdrlen = ieee80211_hdrlen(hdr->frame_control); | |
1160 | int ivlen = 0, icvlen = 4; /* also FCS */ | |
9b26b500 | 1161 | |
9b26b500 JB |
1162 | pkt = alloc_skb(pktsize, GFP_KERNEL); |
1163 | if (!pkt) | |
1164 | goto report; | |
f444eb10 JB |
1165 | |
1166 | memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen); | |
1167 | pktdata += hdrlen; | |
1168 | pktsize -= hdrlen; | |
1169 | ||
1170 | if (ieee80211_has_protected(hdr->frame_control)) { | |
7abc4632 JB |
1171 | /* |
1172 | * This is unlocked and using gtk_i(c)vlen, | |
1173 | * but since everything is under RTNL still | |
1174 | * that's not really a problem - changing | |
1175 | * it would be difficult. | |
1176 | */ | |
f444eb10 JB |
1177 | if (is_multicast_ether_addr(hdr->addr1)) { |
1178 | ivlen = mvm->gtk_ivlen; | |
1179 | icvlen += mvm->gtk_icvlen; | |
1180 | } else { | |
1181 | ivlen = mvm->ptk_ivlen; | |
1182 | icvlen += mvm->ptk_icvlen; | |
1183 | } | |
1184 | } | |
1185 | ||
1186 | /* if truncated, FCS/ICV is (partially) gone */ | |
1187 | if (truncated >= icvlen) { | |
1188 | icvlen = 0; | |
1189 | truncated -= icvlen; | |
1190 | } else { | |
1191 | icvlen -= truncated; | |
1192 | truncated = 0; | |
1193 | } | |
1194 | ||
1195 | pktsize -= ivlen + icvlen; | |
1196 | pktdata += ivlen; | |
1197 | ||
1198 | memcpy(skb_put(pkt, pktsize), pktdata, pktsize); | |
1199 | ||
9b26b500 JB |
1200 | if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) |
1201 | goto report; | |
1202 | wakeup.packet = pkt->data; | |
1203 | wakeup.packet_present_len = pkt->len; | |
f444eb10 | 1204 | wakeup.packet_len = pkt->len - truncated; |
9b26b500 JB |
1205 | wakeup.packet_80211 = false; |
1206 | } else { | |
f444eb10 JB |
1207 | int fcslen = 4; |
1208 | ||
1209 | if (truncated >= 4) { | |
1210 | truncated -= 4; | |
1211 | fcslen = 0; | |
1212 | } else { | |
1213 | fcslen -= truncated; | |
1214 | truncated = 0; | |
1215 | } | |
1216 | pktsize -= fcslen; | |
9b26b500 JB |
1217 | wakeup.packet = status->wake_packet; |
1218 | wakeup.packet_present_len = pktsize; | |
f444eb10 | 1219 | wakeup.packet_len = pktlen - truncated; |
9b26b500 JB |
1220 | wakeup.packet_80211 = true; |
1221 | } | |
1222 | } | |
1223 | ||
1224 | report: | |
1225 | ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); | |
1226 | kfree_skb(pkt); | |
7abc4632 | 1227 | } |
9b26b500 | 1228 | |
6d9d32b8 JB |
1229 | static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc, |
1230 | struct ieee80211_key_seq *seq) | |
1231 | { | |
1232 | u64 pn; | |
1233 | ||
1234 | pn = le64_to_cpu(sc->pn); | |
1235 | seq->ccmp.pn[0] = pn >> 40; | |
1236 | seq->ccmp.pn[1] = pn >> 32; | |
1237 | seq->ccmp.pn[2] = pn >> 24; | |
1238 | seq->ccmp.pn[3] = pn >> 16; | |
1239 | seq->ccmp.pn[4] = pn >> 8; | |
1240 | seq->ccmp.pn[5] = pn; | |
1241 | } | |
1242 | ||
1243 | static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc, | |
1244 | struct ieee80211_key_seq *seq) | |
1245 | { | |
1246 | seq->tkip.iv32 = le32_to_cpu(sc->iv32); | |
1247 | seq->tkip.iv16 = le16_to_cpu(sc->iv16); | |
1248 | } | |
1249 | ||
1250 | static void iwl_mvm_set_aes_rx_seq(struct aes_sc *scs, | |
1251 | struct ieee80211_key_conf *key) | |
1252 | { | |
1253 | int tid; | |
1254 | ||
1255 | BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); | |
1256 | ||
1257 | for (tid = 0; tid < IWL_NUM_RSC; tid++) { | |
1258 | struct ieee80211_key_seq seq = {}; | |
1259 | ||
1260 | iwl_mvm_aes_sc_to_seq(&scs[tid], &seq); | |
1261 | ieee80211_set_key_rx_seq(key, tid, &seq); | |
1262 | } | |
1263 | } | |
1264 | ||
1265 | static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs, | |
1266 | struct ieee80211_key_conf *key) | |
1267 | { | |
1268 | int tid; | |
1269 | ||
1270 | BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS); | |
1271 | ||
1272 | for (tid = 0; tid < IWL_NUM_RSC; tid++) { | |
1273 | struct ieee80211_key_seq seq = {}; | |
1274 | ||
1275 | iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq); | |
1276 | ieee80211_set_key_rx_seq(key, tid, &seq); | |
1277 | } | |
1278 | } | |
1279 | ||
1280 | static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, | |
3afec639 | 1281 | struct iwl_wowlan_status *status) |
6d9d32b8 JB |
1282 | { |
1283 | union iwl_all_tsc_rsc *rsc = &status->gtk.rsc.all_tsc_rsc; | |
1284 | ||
1285 | switch (key->cipher) { | |
1286 | case WLAN_CIPHER_SUITE_CCMP: | |
1287 | iwl_mvm_set_aes_rx_seq(rsc->aes.multicast_rsc, key); | |
1288 | break; | |
1289 | case WLAN_CIPHER_SUITE_TKIP: | |
1290 | iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key); | |
1291 | break; | |
1292 | default: | |
1293 | WARN_ON(1); | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | struct iwl_mvm_d3_gtk_iter_data { | |
3afec639 | 1298 | struct iwl_wowlan_status *status; |
6d9d32b8 JB |
1299 | void *last_gtk; |
1300 | u32 cipher; | |
1301 | bool find_phase, unhandled_cipher; | |
1302 | int num_keys; | |
1303 | }; | |
1304 | ||
1305 | static void iwl_mvm_d3_update_gtks(struct ieee80211_hw *hw, | |
1306 | struct ieee80211_vif *vif, | |
1307 | struct ieee80211_sta *sta, | |
1308 | struct ieee80211_key_conf *key, | |
1309 | void *_data) | |
1310 | { | |
1311 | struct iwl_mvm_d3_gtk_iter_data *data = _data; | |
1312 | ||
1313 | if (data->unhandled_cipher) | |
1314 | return; | |
1315 | ||
1316 | switch (key->cipher) { | |
1317 | case WLAN_CIPHER_SUITE_WEP40: | |
1318 | case WLAN_CIPHER_SUITE_WEP104: | |
1319 | /* ignore WEP completely, nothing to do */ | |
1320 | return; | |
1321 | case WLAN_CIPHER_SUITE_CCMP: | |
1322 | case WLAN_CIPHER_SUITE_TKIP: | |
1323 | /* we support these */ | |
1324 | break; | |
1325 | default: | |
1326 | /* everything else (even CMAC for MFP) - disconnect from AP */ | |
1327 | data->unhandled_cipher = true; | |
1328 | return; | |
1329 | } | |
1330 | ||
1331 | data->num_keys++; | |
1332 | ||
1333 | /* | |
1334 | * pairwise key - update sequence counters only; | |
1335 | * note that this assumes no TDLS sessions are active | |
1336 | */ | |
1337 | if (sta) { | |
1338 | struct ieee80211_key_seq seq = {}; | |
1339 | union iwl_all_tsc_rsc *sc = &data->status->gtk.rsc.all_tsc_rsc; | |
1340 | ||
1341 | if (data->find_phase) | |
1342 | return; | |
1343 | ||
1344 | switch (key->cipher) { | |
1345 | case WLAN_CIPHER_SUITE_CCMP: | |
1346 | iwl_mvm_aes_sc_to_seq(&sc->aes.tsc, &seq); | |
1347 | iwl_mvm_set_aes_rx_seq(sc->aes.unicast_rsc, key); | |
1348 | break; | |
1349 | case WLAN_CIPHER_SUITE_TKIP: | |
1350 | iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq); | |
1351 | iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key); | |
1352 | break; | |
1353 | } | |
1354 | ieee80211_set_key_tx_seq(key, &seq); | |
1355 | ||
1356 | /* that's it for this key */ | |
1357 | return; | |
1358 | } | |
1359 | ||
1360 | if (data->find_phase) { | |
1361 | data->last_gtk = key; | |
1362 | data->cipher = key->cipher; | |
1363 | return; | |
1364 | } | |
1365 | ||
1366 | if (data->status->num_of_gtk_rekeys) | |
1367 | ieee80211_remove_key(key); | |
1368 | else if (data->last_gtk == key) | |
1369 | iwl_mvm_set_key_rx_seq(key, data->status); | |
1370 | } | |
1371 | ||
1372 | static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, | |
1373 | struct ieee80211_vif *vif, | |
3afec639 | 1374 | struct iwl_wowlan_status *status) |
6d9d32b8 JB |
1375 | { |
1376 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1377 | struct iwl_mvm_d3_gtk_iter_data gtkdata = { | |
1378 | .status = status, | |
1379 | }; | |
431591cc EP |
1380 | u32 disconnection_reasons = |
1381 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | | |
1382 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH; | |
6d9d32b8 JB |
1383 | |
1384 | if (!status || !vif->bss_conf.bssid) | |
1385 | return false; | |
1386 | ||
431591cc EP |
1387 | if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons) |
1388 | return false; | |
1389 | ||
6d9d32b8 JB |
1390 | /* find last GTK that we used initially, if any */ |
1391 | gtkdata.find_phase = true; | |
1392 | ieee80211_iter_keys(mvm->hw, vif, | |
1393 | iwl_mvm_d3_update_gtks, >kdata); | |
1394 | /* not trying to keep connections with MFP/unhandled ciphers */ | |
1395 | if (gtkdata.unhandled_cipher) | |
1396 | return false; | |
1397 | if (!gtkdata.num_keys) | |
cfa88893 | 1398 | goto out; |
6d9d32b8 JB |
1399 | if (!gtkdata.last_gtk) |
1400 | return false; | |
1401 | ||
1402 | /* | |
1403 | * invalidate all other GTKs that might still exist and update | |
1404 | * the one that we used | |
1405 | */ | |
1406 | gtkdata.find_phase = false; | |
1407 | ieee80211_iter_keys(mvm->hw, vif, | |
1408 | iwl_mvm_d3_update_gtks, >kdata); | |
1409 | ||
1410 | if (status->num_of_gtk_rekeys) { | |
1411 | struct ieee80211_key_conf *key; | |
1412 | struct { | |
1413 | struct ieee80211_key_conf conf; | |
1414 | u8 key[32]; | |
1415 | } conf = { | |
1416 | .conf.cipher = gtkdata.cipher, | |
1417 | .conf.keyidx = status->gtk.key_index, | |
1418 | }; | |
1419 | ||
1420 | switch (gtkdata.cipher) { | |
1421 | case WLAN_CIPHER_SUITE_CCMP: | |
1422 | conf.conf.keylen = WLAN_KEY_LEN_CCMP; | |
1423 | memcpy(conf.conf.key, status->gtk.decrypt_key, | |
1424 | WLAN_KEY_LEN_CCMP); | |
1425 | break; | |
1426 | case WLAN_CIPHER_SUITE_TKIP: | |
1427 | conf.conf.keylen = WLAN_KEY_LEN_TKIP; | |
1428 | memcpy(conf.conf.key, status->gtk.decrypt_key, 16); | |
1429 | /* leave TX MIC key zeroed, we don't use it anyway */ | |
1430 | memcpy(conf.conf.key + | |
1431 | NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, | |
1432 | status->gtk.tkip_mic_key, 8); | |
1433 | break; | |
1434 | } | |
1435 | ||
1436 | key = ieee80211_gtk_rekey_add(vif, &conf.conf); | |
1437 | if (IS_ERR(key)) | |
1438 | return false; | |
1439 | iwl_mvm_set_key_rx_seq(key, status); | |
1440 | } | |
1441 | ||
1442 | if (status->num_of_gtk_rekeys) { | |
1443 | __be64 replay_ctr = | |
1444 | cpu_to_be64(le64_to_cpu(status->replay_ctr)); | |
1445 | ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, | |
1446 | (void *)&replay_ctr, GFP_KERNEL); | |
1447 | } | |
1448 | ||
cfa88893 | 1449 | out: |
6d9d32b8 JB |
1450 | mvmvif->seqno_valid = true; |
1451 | /* +0x10 because the set API expects next-to-use, not last-used */ | |
1452 | mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10; | |
1453 | ||
1454 | return true; | |
1455 | } | |
1456 | ||
7abc4632 | 1457 | /* releases the MVM mutex */ |
6d9d32b8 | 1458 | static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, |
7abc4632 JB |
1459 | struct ieee80211_vif *vif) |
1460 | { | |
1461 | u32 base = mvm->error_event_table; | |
1462 | struct error_table_start { | |
1463 | /* cf. struct iwl_error_event_table */ | |
1464 | u32 valid; | |
1465 | u32 error_id; | |
1466 | } err_info; | |
1467 | struct iwl_host_cmd cmd = { | |
1468 | .id = WOWLAN_GET_STATUSES, | |
1469 | .flags = CMD_SYNC | CMD_WANT_SKB, | |
1470 | }; | |
6d9d32b8 | 1471 | struct iwl_wowlan_status_data status; |
3afec639 | 1472 | struct iwl_wowlan_status *fw_status; |
6d9d32b8 JB |
1473 | int ret, len, status_size, i; |
1474 | bool keep; | |
1475 | struct ieee80211_sta *ap_sta; | |
1476 | struct iwl_mvm_sta *mvm_ap_sta; | |
7abc4632 JB |
1477 | |
1478 | iwl_trans_read_mem_bytes(mvm->trans, base, | |
1479 | &err_info, sizeof(err_info)); | |
1480 | ||
1481 | if (err_info.valid) { | |
1482 | IWL_INFO(mvm, "error table is valid (%d)\n", | |
1483 | err_info.valid); | |
1484 | if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) { | |
1485 | struct cfg80211_wowlan_wakeup wakeup = { | |
1486 | .rfkill_release = true, | |
1487 | }; | |
1488 | ieee80211_report_wowlan_wakeup(vif, &wakeup, | |
1489 | GFP_KERNEL); | |
1490 | } | |
1491 | goto out_unlock; | |
1492 | } | |
1493 | ||
1494 | /* only for tracing for now */ | |
1495 | ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, CMD_SYNC, 0, NULL); | |
1496 | if (ret) | |
1497 | IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret); | |
1498 | ||
1499 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
1500 | if (ret) { | |
1501 | IWL_ERR(mvm, "failed to query status (%d)\n", ret); | |
1502 | goto out_unlock; | |
1503 | } | |
1504 | ||
1505 | /* RF-kill already asserted again... */ | |
1506 | if (!cmd.resp_pkt) | |
1507 | goto out_unlock; | |
1508 | ||
3afec639 | 1509 | status_size = sizeof(*fw_status); |
6d9d32b8 | 1510 | |
65b30348 JB |
1511 | len = iwl_rx_packet_payload_len(cmd.resp_pkt); |
1512 | if (len < status_size) { | |
7abc4632 JB |
1513 | IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); |
1514 | goto out_free_resp; | |
1515 | } | |
1516 | ||
3afec639 EG |
1517 | fw_status = (void *)cmd.resp_pkt->data; |
1518 | ||
1519 | status.pattern_number = le16_to_cpu(fw_status->pattern_number); | |
1520 | for (i = 0; i < 8; i++) | |
1521 | status.qos_seq_ctr[i] = | |
1522 | le16_to_cpu(fw_status->qos_seq_ctr[i]); | |
1523 | status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons); | |
1524 | status.wake_packet_length = | |
1525 | le32_to_cpu(fw_status->wake_packet_length); | |
1526 | status.wake_packet_bufsize = | |
1527 | le32_to_cpu(fw_status->wake_packet_bufsize); | |
1528 | status.wake_packet = fw_status->wake_packet; | |
7abc4632 | 1529 | |
65b30348 | 1530 | if (len != status_size + ALIGN(status.wake_packet_bufsize, 4)) { |
7abc4632 JB |
1531 | IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); |
1532 | goto out_free_resp; | |
1533 | } | |
1534 | ||
6d9d32b8 JB |
1535 | /* still at hard-coded place 0 for D3 image */ |
1536 | ap_sta = rcu_dereference_protected( | |
1537 | mvm->fw_id_to_mac_id[0], | |
1538 | lockdep_is_held(&mvm->mutex)); | |
1539 | if (IS_ERR_OR_NULL(ap_sta)) | |
1540 | goto out_free_resp; | |
1541 | ||
1542 | mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; | |
1543 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { | |
1544 | u16 seq = status.qos_seq_ctr[i]; | |
1545 | /* firmware stores last-used value, we store next value */ | |
1546 | seq += 0x10; | |
1547 | mvm_ap_sta->tid_data[i].seq_number = seq; | |
1548 | } | |
1549 | ||
7abc4632 JB |
1550 | /* now we have all the data we need, unlock to avoid mac80211 issues */ |
1551 | mutex_unlock(&mvm->mutex); | |
1552 | ||
6d9d32b8 JB |
1553 | iwl_mvm_report_wakeup_reasons(mvm, vif, &status); |
1554 | ||
3afec639 | 1555 | keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status); |
6d9d32b8 | 1556 | |
7abc4632 | 1557 | iwl_free_resp(&cmd); |
6d9d32b8 | 1558 | return keep; |
7abc4632 JB |
1559 | |
1560 | out_free_resp: | |
9b26b500 | 1561 | iwl_free_resp(&cmd); |
7abc4632 JB |
1562 | out_unlock: |
1563 | mutex_unlock(&mvm->mutex); | |
6d9d32b8 | 1564 | return false; |
9b26b500 JB |
1565 | } |
1566 | ||
afc66bb7 JB |
1567 | static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm) |
1568 | { | |
1569 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
1570 | const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN]; | |
1571 | u32 len = img->sec[IWL_UCODE_SECTION_DATA].len; | |
1572 | u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset; | |
1573 | ||
1574 | if (!mvm->store_d3_resume_sram) | |
1575 | return; | |
1576 | ||
1577 | if (!mvm->d3_resume_sram) { | |
1578 | mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL); | |
1579 | if (!mvm->d3_resume_sram) | |
1580 | return; | |
1581 | } | |
1582 | ||
1583 | iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len); | |
1584 | #endif | |
1585 | } | |
1586 | ||
6d9d32b8 JB |
1587 | static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac, |
1588 | struct ieee80211_vif *vif) | |
1589 | { | |
1590 | /* skip the one we keep connection on */ | |
1591 | if (data == vif) | |
1592 | return; | |
1593 | ||
1594 | if (vif->type == NL80211_IFTYPE_STATION) | |
1595 | ieee80211_resume_disconnect(vif); | |
1596 | } | |
1597 | ||
debff618 | 1598 | static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) |
8ca151b5 | 1599 | { |
8ca151b5 JB |
1600 | struct iwl_d3_iter_data resume_iter_data = { |
1601 | .mvm = mvm, | |
1602 | }; | |
1603 | struct ieee80211_vif *vif = NULL; | |
8ca151b5 JB |
1604 | int ret; |
1605 | enum iwl_d3_status d3_status; | |
6d9d32b8 | 1606 | bool keep = false; |
8ca151b5 JB |
1607 | |
1608 | mutex_lock(&mvm->mutex); | |
1609 | ||
1610 | /* get the BSS vif pointer again */ | |
1611 | ieee80211_iterate_active_interfaces_atomic( | |
1612 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
1613 | iwl_mvm_d3_iface_iterator, &resume_iter_data); | |
1614 | ||
1615 | if (WARN_ON(resume_iter_data.error || !resume_iter_data.vif)) | |
1616 | goto out_unlock; | |
1617 | ||
1618 | vif = resume_iter_data.vif; | |
1619 | ||
debff618 | 1620 | ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test); |
8ca151b5 JB |
1621 | if (ret) |
1622 | goto out_unlock; | |
1623 | ||
1624 | if (d3_status != IWL_D3_STATUS_ALIVE) { | |
1625 | IWL_INFO(mvm, "Device was reset during suspend\n"); | |
1626 | goto out_unlock; | |
1627 | } | |
1628 | ||
afc66bb7 JB |
1629 | /* query SRAM first in case we want event logging */ |
1630 | iwl_mvm_read_d3_sram(mvm); | |
1631 | ||
6d9d32b8 | 1632 | keep = iwl_mvm_query_wakeup_reasons(mvm, vif); |
78c9df66 EP |
1633 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
1634 | if (keep) | |
1635 | mvm->keep_vif = vif; | |
1636 | #endif | |
7abc4632 JB |
1637 | /* has unlocked the mutex, so skip that */ |
1638 | goto out; | |
8ca151b5 JB |
1639 | |
1640 | out_unlock: | |
1641 | mutex_unlock(&mvm->mutex); | |
1642 | ||
7abc4632 | 1643 | out: |
6d9d32b8 JB |
1644 | if (!test) |
1645 | ieee80211_iterate_active_interfaces_rtnl(mvm->hw, | |
1646 | IEEE80211_IFACE_ITER_NORMAL, | |
1647 | iwl_mvm_d3_disconnect_iter, keep ? vif : NULL); | |
8ca151b5 JB |
1648 | |
1649 | /* return 1 to reconfigure the device */ | |
1650 | set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); | |
1651 | return 1; | |
1652 | } | |
1653 | ||
debff618 JB |
1654 | int iwl_mvm_resume(struct ieee80211_hw *hw) |
1655 | { | |
1656 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1657 | ||
d15a747f EP |
1658 | if (iwl_mvm_is_d0i3_supported(mvm)) { |
1659 | bool exit_now; | |
1660 | ||
1661 | mutex_lock(&mvm->d0i3_suspend_mutex); | |
1662 | __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags); | |
1663 | exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP, | |
1664 | &mvm->d0i3_suspend_flags); | |
1665 | mutex_unlock(&mvm->d0i3_suspend_mutex); | |
1666 | if (exit_now) | |
1667 | _iwl_mvm_exit_d0i3(mvm); | |
1668 | return 0; | |
1669 | } | |
1670 | ||
debff618 JB |
1671 | return __iwl_mvm_resume(mvm, false); |
1672 | } | |
1673 | ||
8ca151b5 JB |
1674 | void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) |
1675 | { | |
1676 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1677 | ||
1678 | device_set_wakeup_enable(mvm->trans->dev, enabled); | |
1679 | } | |
debff618 JB |
1680 | |
1681 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
1682 | static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file) | |
1683 | { | |
1684 | struct iwl_mvm *mvm = inode->i_private; | |
1685 | int err; | |
1686 | ||
1687 | if (mvm->d3_test_active) | |
1688 | return -EBUSY; | |
1689 | ||
1690 | file->private_data = inode->i_private; | |
1691 | ||
1692 | ieee80211_stop_queues(mvm->hw); | |
1693 | synchronize_net(); | |
1694 | ||
1695 | /* start pseudo D3 */ | |
1696 | rtnl_lock(); | |
1697 | err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); | |
1698 | rtnl_unlock(); | |
1699 | if (err > 0) | |
1700 | err = -EINVAL; | |
1701 | if (err) { | |
1702 | ieee80211_wake_queues(mvm->hw); | |
1703 | return err; | |
1704 | } | |
1705 | mvm->d3_test_active = true; | |
78c9df66 | 1706 | mvm->keep_vif = NULL; |
debff618 JB |
1707 | return 0; |
1708 | } | |
1709 | ||
1710 | static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf, | |
1711 | size_t count, loff_t *ppos) | |
1712 | { | |
1713 | struct iwl_mvm *mvm = file->private_data; | |
1714 | u32 pme_asserted; | |
1715 | ||
1716 | while (true) { | |
4ed80a86 EP |
1717 | /* read pme_ptr if available */ |
1718 | if (mvm->d3_test_pme_ptr) { | |
1719 | pme_asserted = iwl_trans_read_mem32(mvm->trans, | |
1720 | mvm->d3_test_pme_ptr); | |
1721 | if (pme_asserted) | |
1722 | break; | |
1723 | } | |
1724 | ||
debff618 JB |
1725 | if (msleep_interruptible(100)) |
1726 | break; | |
1727 | } | |
1728 | ||
1729 | return 0; | |
1730 | } | |
1731 | ||
1732 | static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac, | |
1733 | struct ieee80211_vif *vif) | |
1734 | { | |
78c9df66 EP |
1735 | /* skip the one we keep connection on */ |
1736 | if (_data == vif) | |
1737 | return; | |
1738 | ||
debff618 JB |
1739 | if (vif->type == NL80211_IFTYPE_STATION) |
1740 | ieee80211_connection_loss(vif); | |
1741 | } | |
1742 | ||
1743 | static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file) | |
1744 | { | |
1745 | struct iwl_mvm *mvm = inode->i_private; | |
1746 | int remaining_time = 10; | |
1747 | ||
1748 | mvm->d3_test_active = false; | |
1749 | __iwl_mvm_resume(mvm, true); | |
1750 | iwl_abort_notification_waits(&mvm->notif_wait); | |
1751 | ieee80211_restart_hw(mvm->hw); | |
1752 | ||
1753 | /* wait for restart and disconnect all interfaces */ | |
1754 | while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) && | |
1755 | remaining_time > 0) { | |
1756 | remaining_time--; | |
1757 | msleep(1000); | |
1758 | } | |
1759 | ||
1760 | if (remaining_time == 0) | |
1761 | IWL_ERR(mvm, "Timed out waiting for HW restart to finish!\n"); | |
1762 | ||
1763 | ieee80211_iterate_active_interfaces_atomic( | |
1764 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
78c9df66 | 1765 | iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); |
debff618 JB |
1766 | |
1767 | ieee80211_wake_queues(mvm->hw); | |
1768 | ||
1769 | return 0; | |
1770 | } | |
1771 | ||
1772 | const struct file_operations iwl_dbgfs_d3_test_ops = { | |
1773 | .llseek = no_llseek, | |
1774 | .open = iwl_mvm_d3_test_open, | |
1775 | .read = iwl_mvm_d3_test_read, | |
1776 | .release = iwl_mvm_d3_test_release, | |
1777 | }; | |
1778 | #endif |