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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 | * | |
8 | * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. | |
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 | * | |
33 | * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. | |
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> |
8ca151b5 JB |
66 | #include <net/cfg80211.h> |
67 | #include <net/ipv6.h> | |
f0c2646a | 68 | #include <net/tcp.h> |
8ca151b5 JB |
69 | #include "iwl-modparams.h" |
70 | #include "fw-api.h" | |
71 | #include "mvm.h" | |
72 | ||
73 | void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw, | |
74 | struct ieee80211_vif *vif, | |
75 | struct cfg80211_gtk_rekey_data *data) | |
76 | { | |
77 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
78 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
79 | ||
80 | if (iwlwifi_mod_params.sw_crypto) | |
81 | return; | |
82 | ||
83 | mutex_lock(&mvm->mutex); | |
84 | ||
85 | memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN); | |
86 | memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN); | |
87 | mvmvif->rekey_data.replay_ctr = | |
88 | cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr)); | |
89 | mvmvif->rekey_data.valid = true; | |
90 | ||
91 | mutex_unlock(&mvm->mutex); | |
92 | } | |
93 | ||
94 | #if IS_ENABLED(CONFIG_IPV6) | |
95 | void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw, | |
96 | struct ieee80211_vif *vif, | |
97 | struct inet6_dev *idev) | |
98 | { | |
99 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
100 | struct inet6_ifaddr *ifa; | |
101 | int idx = 0; | |
102 | ||
a3777e0f | 103 | read_lock_bh(&idev->lock); |
8ca151b5 JB |
104 | list_for_each_entry(ifa, &idev->addr_list, if_list) { |
105 | mvmvif->target_ipv6_addrs[idx] = ifa->addr; | |
106 | idx++; | |
107 | if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS) | |
108 | break; | |
109 | } | |
a3777e0f | 110 | read_unlock_bh(&idev->lock); |
8ca151b5 JB |
111 | |
112 | mvmvif->num_target_ipv6_addrs = idx; | |
113 | } | |
114 | #endif | |
115 | ||
116 | void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw, | |
117 | struct ieee80211_vif *vif, int idx) | |
118 | { | |
119 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
120 | ||
121 | mvmvif->tx_key_idx = idx; | |
122 | } | |
123 | ||
124 | static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out) | |
125 | { | |
126 | int i; | |
127 | ||
128 | for (i = 0; i < IWL_P1K_SIZE; i++) | |
129 | out[i] = cpu_to_le16(p1k[i]); | |
130 | } | |
131 | ||
132 | struct wowlan_key_data { | |
133 | struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc; | |
134 | struct iwl_wowlan_tkip_params_cmd *tkip; | |
135 | bool error, use_rsc_tsc, use_tkip; | |
136 | int gtk_key_idx; | |
137 | }; | |
138 | ||
139 | static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw, | |
140 | struct ieee80211_vif *vif, | |
141 | struct ieee80211_sta *sta, | |
142 | struct ieee80211_key_conf *key, | |
143 | void *_data) | |
144 | { | |
145 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
146 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
147 | struct wowlan_key_data *data = _data; | |
148 | struct aes_sc *aes_sc, *aes_tx_sc = NULL; | |
149 | struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; | |
150 | struct iwl_p1k_cache *rx_p1ks; | |
151 | u8 *rx_mic_key; | |
152 | struct ieee80211_key_seq seq; | |
153 | u32 cur_rx_iv32 = 0; | |
154 | u16 p1k[IWL_P1K_SIZE]; | |
155 | int ret, i; | |
156 | ||
157 | mutex_lock(&mvm->mutex); | |
158 | ||
159 | switch (key->cipher) { | |
160 | case WLAN_CIPHER_SUITE_WEP40: | |
161 | case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */ | |
162 | struct { | |
163 | struct iwl_mvm_wep_key_cmd wep_key_cmd; | |
164 | struct iwl_mvm_wep_key wep_key; | |
165 | } __packed wkc = { | |
166 | .wep_key_cmd.mac_id_n_color = | |
167 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
168 | mvmvif->color)), | |
169 | .wep_key_cmd.num_keys = 1, | |
170 | /* firmware sets STA_KEY_FLG_WEP_13BYTES */ | |
171 | .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP, | |
172 | .wep_key.key_index = key->keyidx, | |
173 | .wep_key.key_size = key->keylen, | |
174 | }; | |
175 | ||
176 | /* | |
177 | * This will fail -- the key functions don't set support | |
178 | * pairwise WEP keys. However, that's better than silently | |
179 | * failing WoWLAN. Or maybe not? | |
180 | */ | |
181 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) | |
182 | break; | |
183 | ||
184 | memcpy(&wkc.wep_key.key[3], key->key, key->keylen); | |
185 | if (key->keyidx == mvmvif->tx_key_idx) { | |
186 | /* TX key must be at offset 0 */ | |
187 | wkc.wep_key.key_offset = 0; | |
188 | } else { | |
189 | /* others start at 1 */ | |
190 | data->gtk_key_idx++; | |
191 | wkc.wep_key.key_offset = data->gtk_key_idx; | |
192 | } | |
193 | ||
194 | ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, CMD_SYNC, | |
195 | sizeof(wkc), &wkc); | |
196 | data->error = ret != 0; | |
197 | ||
f444eb10 JB |
198 | mvm->ptk_ivlen = key->iv_len; |
199 | mvm->ptk_icvlen = key->icv_len; | |
200 | mvm->gtk_ivlen = key->iv_len; | |
201 | mvm->gtk_icvlen = key->icv_len; | |
202 | ||
8ca151b5 JB |
203 | /* don't upload key again */ |
204 | goto out_unlock; | |
205 | } | |
206 | default: | |
207 | data->error = true; | |
208 | goto out_unlock; | |
209 | case WLAN_CIPHER_SUITE_AES_CMAC: | |
210 | /* | |
211 | * Ignore CMAC keys -- the WoWLAN firmware doesn't support them | |
212 | * but we also shouldn't abort suspend due to that. It does have | |
213 | * support for the IGTK key renewal, but doesn't really use the | |
214 | * IGTK for anything. This means we could spuriously wake up or | |
215 | * be deauthenticated, but that was considered acceptable. | |
216 | */ | |
217 | goto out_unlock; | |
218 | case WLAN_CIPHER_SUITE_TKIP: | |
219 | if (sta) { | |
220 | tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc; | |
221 | tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc; | |
222 | ||
223 | rx_p1ks = data->tkip->rx_uni; | |
224 | ||
225 | ieee80211_get_key_tx_seq(key, &seq); | |
226 | tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16); | |
227 | tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32); | |
228 | ||
229 | ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k); | |
230 | iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k); | |
231 | ||
232 | memcpy(data->tkip->mic_keys.tx, | |
233 | &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY], | |
234 | IWL_MIC_KEY_SIZE); | |
235 | ||
236 | rx_mic_key = data->tkip->mic_keys.rx_unicast; | |
237 | } else { | |
238 | tkip_sc = | |
239 | data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc; | |
240 | rx_p1ks = data->tkip->rx_multi; | |
241 | rx_mic_key = data->tkip->mic_keys.rx_mcast; | |
242 | } | |
243 | ||
244 | /* | |
245 | * For non-QoS this relies on the fact that both the uCode and | |
246 | * mac80211 use TID 0 (as they need to to avoid replay attacks) | |
247 | * for checking the IV in the frames. | |
248 | */ | |
249 | for (i = 0; i < IWL_NUM_RSC; i++) { | |
250 | ieee80211_get_key_rx_seq(key, i, &seq); | |
251 | tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16); | |
252 | tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32); | |
253 | /* wrapping isn't allowed, AP must rekey */ | |
254 | if (seq.tkip.iv32 > cur_rx_iv32) | |
255 | cur_rx_iv32 = seq.tkip.iv32; | |
256 | } | |
257 | ||
258 | ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, | |
259 | cur_rx_iv32, p1k); | |
260 | iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k); | |
261 | ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid, | |
262 | cur_rx_iv32 + 1, p1k); | |
263 | iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k); | |
264 | ||
265 | memcpy(rx_mic_key, | |
266 | &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY], | |
267 | IWL_MIC_KEY_SIZE); | |
268 | ||
269 | data->use_tkip = true; | |
270 | data->use_rsc_tsc = true; | |
271 | break; | |
272 | case WLAN_CIPHER_SUITE_CCMP: | |
273 | if (sta) { | |
274 | u8 *pn = seq.ccmp.pn; | |
275 | ||
276 | aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; | |
277 | aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc; | |
278 | ||
279 | ieee80211_get_key_tx_seq(key, &seq); | |
280 | aes_tx_sc->pn = cpu_to_le64((u64)pn[5] | | |
281 | ((u64)pn[4] << 8) | | |
282 | ((u64)pn[3] << 16) | | |
283 | ((u64)pn[2] << 24) | | |
284 | ((u64)pn[1] << 32) | | |
285 | ((u64)pn[0] << 40)); | |
286 | } else { | |
287 | aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc; | |
288 | } | |
289 | ||
290 | /* | |
291 | * For non-QoS this relies on the fact that both the uCode and | |
292 | * mac80211 use TID 0 for checking the IV in the frames. | |
293 | */ | |
294 | for (i = 0; i < IWL_NUM_RSC; i++) { | |
295 | u8 *pn = seq.ccmp.pn; | |
296 | ||
297 | ieee80211_get_key_rx_seq(key, i, &seq); | |
298 | aes_sc->pn = cpu_to_le64((u64)pn[5] | | |
299 | ((u64)pn[4] << 8) | | |
300 | ((u64)pn[3] << 16) | | |
301 | ((u64)pn[2] << 24) | | |
302 | ((u64)pn[1] << 32) | | |
303 | ((u64)pn[0] << 40)); | |
304 | } | |
305 | data->use_rsc_tsc = true; | |
306 | break; | |
307 | } | |
308 | ||
309 | /* | |
310 | * The D3 firmware hardcodes the key offset 0 as the key it uses | |
311 | * to transmit packets to the AP, i.e. the PTK. | |
312 | */ | |
313 | if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) { | |
314 | key->hw_key_idx = 0; | |
f444eb10 JB |
315 | mvm->ptk_ivlen = key->iv_len; |
316 | mvm->ptk_icvlen = key->icv_len; | |
8ca151b5 JB |
317 | } else { |
318 | data->gtk_key_idx++; | |
319 | key->hw_key_idx = data->gtk_key_idx; | |
f444eb10 JB |
320 | mvm->gtk_ivlen = key->iv_len; |
321 | mvm->gtk_icvlen = key->icv_len; | |
8ca151b5 JB |
322 | } |
323 | ||
324 | ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, true); | |
325 | data->error = ret != 0; | |
326 | out_unlock: | |
327 | mutex_unlock(&mvm->mutex); | |
328 | } | |
329 | ||
330 | static int iwl_mvm_send_patterns(struct iwl_mvm *mvm, | |
331 | struct cfg80211_wowlan *wowlan) | |
332 | { | |
333 | struct iwl_wowlan_patterns_cmd *pattern_cmd; | |
334 | struct iwl_host_cmd cmd = { | |
335 | .id = WOWLAN_PATTERNS, | |
336 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
337 | .flags = CMD_SYNC, | |
338 | }; | |
339 | int i, err; | |
340 | ||
341 | if (!wowlan->n_patterns) | |
342 | return 0; | |
343 | ||
344 | cmd.len[0] = sizeof(*pattern_cmd) + | |
345 | wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern); | |
346 | ||
347 | pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL); | |
348 | if (!pattern_cmd) | |
349 | return -ENOMEM; | |
350 | ||
351 | pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns); | |
352 | ||
353 | for (i = 0; i < wowlan->n_patterns; i++) { | |
354 | int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); | |
355 | ||
356 | memcpy(&pattern_cmd->patterns[i].mask, | |
357 | wowlan->patterns[i].mask, mask_len); | |
358 | memcpy(&pattern_cmd->patterns[i].pattern, | |
359 | wowlan->patterns[i].pattern, | |
360 | wowlan->patterns[i].pattern_len); | |
361 | pattern_cmd->patterns[i].mask_size = mask_len; | |
362 | pattern_cmd->patterns[i].pattern_size = | |
363 | wowlan->patterns[i].pattern_len; | |
364 | } | |
365 | ||
366 | cmd.data[0] = pattern_cmd; | |
367 | err = iwl_mvm_send_cmd(mvm, &cmd); | |
368 | kfree(pattern_cmd); | |
369 | return err; | |
370 | } | |
371 | ||
372 | static int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm, | |
373 | struct ieee80211_vif *vif) | |
374 | { | |
375 | struct iwl_proto_offload_cmd cmd = {}; | |
376 | #if IS_ENABLED(CONFIG_IPV6) | |
377 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
378 | int i; | |
379 | ||
380 | if (mvmvif->num_target_ipv6_addrs) { | |
381 | cmd.enabled |= cpu_to_le32(IWL_D3_PROTO_OFFLOAD_NS); | |
382 | memcpy(cmd.ndp_mac_addr, vif->addr, ETH_ALEN); | |
383 | } | |
384 | ||
385 | BUILD_BUG_ON(sizeof(cmd.target_ipv6_addr[i]) != | |
386 | sizeof(mvmvif->target_ipv6_addrs[i])); | |
387 | ||
388 | for (i = 0; i < mvmvif->num_target_ipv6_addrs; i++) | |
389 | memcpy(cmd.target_ipv6_addr[i], | |
390 | &mvmvif->target_ipv6_addrs[i], | |
391 | sizeof(cmd.target_ipv6_addr[i])); | |
392 | #endif | |
393 | ||
394 | if (vif->bss_conf.arp_addr_cnt) { | |
395 | cmd.enabled |= cpu_to_le32(IWL_D3_PROTO_OFFLOAD_ARP); | |
396 | cmd.host_ipv4_addr = vif->bss_conf.arp_addr_list[0]; | |
397 | memcpy(cmd.arp_mac_addr, vif->addr, ETH_ALEN); | |
398 | } | |
399 | ||
400 | if (!cmd.enabled) | |
401 | return 0; | |
402 | ||
403 | return iwl_mvm_send_cmd_pdu(mvm, PROT_OFFLOAD_CONFIG_CMD, CMD_SYNC, | |
404 | sizeof(cmd), &cmd); | |
405 | } | |
406 | ||
f0c2646a JB |
407 | enum iwl_mvm_tcp_packet_type { |
408 | MVM_TCP_TX_SYN, | |
409 | MVM_TCP_RX_SYNACK, | |
410 | MVM_TCP_TX_DATA, | |
411 | MVM_TCP_RX_ACK, | |
412 | MVM_TCP_RX_WAKE, | |
413 | MVM_TCP_TX_FIN, | |
414 | }; | |
415 | ||
416 | static __le16 pseudo_hdr_check(int len, __be32 saddr, __be32 daddr) | |
417 | { | |
418 | __sum16 check = tcp_v4_check(len, saddr, daddr, 0); | |
419 | return cpu_to_le16(be16_to_cpu((__force __be16)check)); | |
420 | } | |
421 | ||
422 | static void iwl_mvm_build_tcp_packet(struct iwl_mvm *mvm, | |
423 | struct ieee80211_vif *vif, | |
424 | struct cfg80211_wowlan_tcp *tcp, | |
425 | void *_pkt, u8 *mask, | |
426 | __le16 *pseudo_hdr_csum, | |
427 | enum iwl_mvm_tcp_packet_type ptype) | |
428 | { | |
429 | struct { | |
430 | struct ethhdr eth; | |
431 | struct iphdr ip; | |
432 | struct tcphdr tcp; | |
433 | u8 data[]; | |
434 | } __packed *pkt = _pkt; | |
435 | u16 ip_tot_len = sizeof(struct iphdr) + sizeof(struct tcphdr); | |
436 | int i; | |
437 | ||
438 | pkt->eth.h_proto = cpu_to_be16(ETH_P_IP), | |
439 | pkt->ip.version = 4; | |
440 | pkt->ip.ihl = 5; | |
441 | pkt->ip.protocol = IPPROTO_TCP; | |
442 | ||
443 | switch (ptype) { | |
444 | case MVM_TCP_TX_SYN: | |
445 | case MVM_TCP_TX_DATA: | |
446 | case MVM_TCP_TX_FIN: | |
447 | memcpy(pkt->eth.h_dest, tcp->dst_mac, ETH_ALEN); | |
448 | memcpy(pkt->eth.h_source, vif->addr, ETH_ALEN); | |
449 | pkt->ip.ttl = 128; | |
450 | pkt->ip.saddr = tcp->src; | |
451 | pkt->ip.daddr = tcp->dst; | |
452 | pkt->tcp.source = cpu_to_be16(tcp->src_port); | |
453 | pkt->tcp.dest = cpu_to_be16(tcp->dst_port); | |
454 | /* overwritten for TX SYN later */ | |
455 | pkt->tcp.doff = sizeof(struct tcphdr) / 4; | |
456 | pkt->tcp.window = cpu_to_be16(65000); | |
457 | break; | |
458 | case MVM_TCP_RX_SYNACK: | |
459 | case MVM_TCP_RX_ACK: | |
460 | case MVM_TCP_RX_WAKE: | |
461 | memcpy(pkt->eth.h_dest, vif->addr, ETH_ALEN); | |
462 | memcpy(pkt->eth.h_source, tcp->dst_mac, ETH_ALEN); | |
463 | pkt->ip.saddr = tcp->dst; | |
464 | pkt->ip.daddr = tcp->src; | |
465 | pkt->tcp.source = cpu_to_be16(tcp->dst_port); | |
466 | pkt->tcp.dest = cpu_to_be16(tcp->src_port); | |
467 | break; | |
468 | default: | |
469 | WARN_ON(1); | |
470 | return; | |
471 | } | |
472 | ||
473 | switch (ptype) { | |
474 | case MVM_TCP_TX_SYN: | |
475 | /* firmware assumes 8 option bytes - 8 NOPs for now */ | |
476 | memset(pkt->data, 0x01, 8); | |
477 | ip_tot_len += 8; | |
478 | pkt->tcp.doff = (sizeof(struct tcphdr) + 8) / 4; | |
479 | pkt->tcp.syn = 1; | |
480 | break; | |
481 | case MVM_TCP_TX_DATA: | |
482 | ip_tot_len += tcp->payload_len; | |
483 | memcpy(pkt->data, tcp->payload, tcp->payload_len); | |
484 | pkt->tcp.psh = 1; | |
485 | pkt->tcp.ack = 1; | |
486 | break; | |
487 | case MVM_TCP_TX_FIN: | |
488 | pkt->tcp.fin = 1; | |
489 | pkt->tcp.ack = 1; | |
490 | break; | |
491 | case MVM_TCP_RX_SYNACK: | |
492 | pkt->tcp.syn = 1; | |
493 | pkt->tcp.ack = 1; | |
494 | break; | |
495 | case MVM_TCP_RX_ACK: | |
496 | pkt->tcp.ack = 1; | |
497 | break; | |
498 | case MVM_TCP_RX_WAKE: | |
499 | ip_tot_len += tcp->wake_len; | |
500 | pkt->tcp.psh = 1; | |
501 | pkt->tcp.ack = 1; | |
502 | memcpy(pkt->data, tcp->wake_data, tcp->wake_len); | |
503 | break; | |
504 | } | |
505 | ||
506 | switch (ptype) { | |
507 | case MVM_TCP_TX_SYN: | |
508 | case MVM_TCP_TX_DATA: | |
509 | case MVM_TCP_TX_FIN: | |
510 | pkt->ip.tot_len = cpu_to_be16(ip_tot_len); | |
511 | pkt->ip.check = ip_fast_csum(&pkt->ip, pkt->ip.ihl); | |
512 | break; | |
513 | case MVM_TCP_RX_WAKE: | |
514 | for (i = 0; i < DIV_ROUND_UP(tcp->wake_len, 8); i++) { | |
515 | u8 tmp = tcp->wake_mask[i]; | |
516 | mask[i + 6] |= tmp << 6; | |
517 | if (i + 1 < DIV_ROUND_UP(tcp->wake_len, 8)) | |
518 | mask[i + 7] = tmp >> 2; | |
519 | } | |
520 | /* fall through for ethernet/IP/TCP headers mask */ | |
521 | case MVM_TCP_RX_SYNACK: | |
522 | case MVM_TCP_RX_ACK: | |
523 | mask[0] = 0xff; /* match ethernet */ | |
524 | /* | |
525 | * match ethernet, ip.version, ip.ihl | |
526 | * the ip.ihl half byte is really masked out by firmware | |
527 | */ | |
528 | mask[1] = 0x7f; | |
529 | mask[2] = 0x80; /* match ip.protocol */ | |
530 | mask[3] = 0xfc; /* match ip.saddr, ip.daddr */ | |
531 | mask[4] = 0x3f; /* match ip.daddr, tcp.source, tcp.dest */ | |
532 | mask[5] = 0x80; /* match tcp flags */ | |
533 | /* leave rest (0 or set for MVM_TCP_RX_WAKE) */ | |
534 | break; | |
535 | }; | |
536 | ||
537 | *pseudo_hdr_csum = pseudo_hdr_check(ip_tot_len - sizeof(struct iphdr), | |
538 | pkt->ip.saddr, pkt->ip.daddr); | |
539 | } | |
540 | ||
541 | static int iwl_mvm_send_remote_wake_cfg(struct iwl_mvm *mvm, | |
542 | struct ieee80211_vif *vif, | |
543 | struct cfg80211_wowlan_tcp *tcp) | |
544 | { | |
545 | struct iwl_wowlan_remote_wake_config *cfg; | |
546 | struct iwl_host_cmd cmd = { | |
547 | .id = REMOTE_WAKE_CONFIG_CMD, | |
548 | .len = { sizeof(*cfg), }, | |
549 | .dataflags = { IWL_HCMD_DFL_NOCOPY, }, | |
550 | .flags = CMD_SYNC, | |
551 | }; | |
552 | int ret; | |
553 | ||
554 | if (!tcp) | |
555 | return 0; | |
556 | ||
557 | cfg = kzalloc(sizeof(*cfg), GFP_KERNEL); | |
558 | if (!cfg) | |
559 | return -ENOMEM; | |
560 | cmd.data[0] = cfg; | |
561 | ||
562 | cfg->max_syn_retries = 10; | |
563 | cfg->max_data_retries = 10; | |
564 | cfg->tcp_syn_ack_timeout = 1; /* seconds */ | |
565 | cfg->tcp_ack_timeout = 1; /* seconds */ | |
566 | ||
567 | /* SYN (TX) */ | |
568 | iwl_mvm_build_tcp_packet( | |
569 | mvm, vif, tcp, cfg->syn_tx.data, NULL, | |
570 | &cfg->syn_tx.info.tcp_pseudo_header_checksum, | |
571 | MVM_TCP_TX_SYN); | |
572 | cfg->syn_tx.info.tcp_payload_length = 0; | |
573 | ||
574 | /* SYN/ACK (RX) */ | |
575 | iwl_mvm_build_tcp_packet( | |
576 | mvm, vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask, | |
577 | &cfg->synack_rx.info.tcp_pseudo_header_checksum, | |
578 | MVM_TCP_RX_SYNACK); | |
579 | cfg->synack_rx.info.tcp_payload_length = 0; | |
580 | ||
581 | /* KEEPALIVE/ACK (TX) */ | |
582 | iwl_mvm_build_tcp_packet( | |
583 | mvm, vif, tcp, cfg->keepalive_tx.data, NULL, | |
584 | &cfg->keepalive_tx.info.tcp_pseudo_header_checksum, | |
585 | MVM_TCP_TX_DATA); | |
586 | cfg->keepalive_tx.info.tcp_payload_length = | |
587 | cpu_to_le16(tcp->payload_len); | |
588 | cfg->sequence_number_offset = tcp->payload_seq.offset; | |
589 | /* length must be 0..4, the field is little endian */ | |
590 | cfg->sequence_number_length = tcp->payload_seq.len; | |
591 | cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start); | |
592 | cfg->keepalive_interval = cpu_to_le16(tcp->data_interval); | |
593 | if (tcp->payload_tok.len) { | |
594 | cfg->token_offset = tcp->payload_tok.offset; | |
595 | cfg->token_length = tcp->payload_tok.len; | |
596 | cfg->num_tokens = | |
597 | cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len); | |
598 | memcpy(cfg->tokens, tcp->payload_tok.token_stream, | |
599 | tcp->tokens_size); | |
600 | } else { | |
601 | /* set tokens to max value to almost never run out */ | |
602 | cfg->num_tokens = cpu_to_le16(65535); | |
603 | } | |
604 | ||
605 | /* ACK (RX) */ | |
606 | iwl_mvm_build_tcp_packet( | |
607 | mvm, vif, tcp, cfg->keepalive_ack_rx.data, | |
608 | cfg->keepalive_ack_rx.rx_mask, | |
609 | &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum, | |
610 | MVM_TCP_RX_ACK); | |
611 | cfg->keepalive_ack_rx.info.tcp_payload_length = 0; | |
612 | ||
613 | /* WAKEUP (RX) */ | |
614 | iwl_mvm_build_tcp_packet( | |
615 | mvm, vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask, | |
616 | &cfg->wake_rx.info.tcp_pseudo_header_checksum, | |
617 | MVM_TCP_RX_WAKE); | |
618 | cfg->wake_rx.info.tcp_payload_length = | |
619 | cpu_to_le16(tcp->wake_len); | |
620 | ||
621 | /* FIN */ | |
622 | iwl_mvm_build_tcp_packet( | |
623 | mvm, vif, tcp, cfg->fin_tx.data, NULL, | |
624 | &cfg->fin_tx.info.tcp_pseudo_header_checksum, | |
625 | MVM_TCP_TX_FIN); | |
626 | cfg->fin_tx.info.tcp_payload_length = 0; | |
627 | ||
628 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
629 | kfree(cfg); | |
630 | ||
631 | return ret; | |
632 | } | |
633 | ||
8ca151b5 JB |
634 | struct iwl_d3_iter_data { |
635 | struct iwl_mvm *mvm; | |
636 | struct ieee80211_vif *vif; | |
637 | bool error; | |
638 | }; | |
639 | ||
640 | static void iwl_mvm_d3_iface_iterator(void *_data, u8 *mac, | |
641 | struct ieee80211_vif *vif) | |
642 | { | |
643 | struct iwl_d3_iter_data *data = _data; | |
644 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
645 | ||
646 | if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) | |
647 | return; | |
648 | ||
649 | if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) | |
650 | return; | |
651 | ||
652 | if (data->vif) { | |
653 | IWL_ERR(data->mvm, "More than one managed interface active!\n"); | |
654 | data->error = true; | |
655 | return; | |
656 | } | |
657 | ||
658 | data->vif = vif; | |
659 | } | |
660 | ||
661 | static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
662 | struct ieee80211_sta *ap_sta) | |
663 | { | |
664 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
665 | struct ieee80211_chanctx_conf *ctx; | |
666 | u8 chains_static, chains_dynamic; | |
667 | struct cfg80211_chan_def chandef; | |
668 | int ret, i; | |
669 | struct iwl_binding_cmd binding_cmd = {}; | |
670 | struct iwl_time_quota_cmd quota_cmd = {}; | |
671 | u32 status; | |
672 | ||
673 | /* add back the PHY */ | |
674 | if (WARN_ON(!mvmvif->phy_ctxt)) | |
675 | return -EINVAL; | |
676 | ||
677 | rcu_read_lock(); | |
678 | ctx = rcu_dereference(vif->chanctx_conf); | |
679 | if (WARN_ON(!ctx)) { | |
680 | rcu_read_unlock(); | |
681 | return -EINVAL; | |
682 | } | |
683 | chandef = ctx->def; | |
684 | chains_static = ctx->rx_chains_static; | |
685 | chains_dynamic = ctx->rx_chains_dynamic; | |
686 | rcu_read_unlock(); | |
687 | ||
688 | ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef, | |
689 | chains_static, chains_dynamic); | |
690 | if (ret) | |
691 | return ret; | |
692 | ||
693 | /* add back the MAC */ | |
694 | mvmvif->uploaded = false; | |
695 | ||
696 | if (WARN_ON(!vif->bss_conf.assoc)) | |
697 | return -EINVAL; | |
698 | /* hack */ | |
699 | vif->bss_conf.assoc = false; | |
700 | ret = iwl_mvm_mac_ctxt_add(mvm, vif); | |
701 | vif->bss_conf.assoc = true; | |
702 | if (ret) | |
703 | return ret; | |
704 | ||
705 | /* add back binding - XXX refactor? */ | |
706 | binding_cmd.id_and_color = | |
707 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, | |
708 | mvmvif->phy_ctxt->color)); | |
709 | binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD); | |
710 | binding_cmd.phy = | |
711 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, | |
712 | mvmvif->phy_ctxt->color)); | |
713 | binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
714 | mvmvif->color)); | |
715 | for (i = 1; i < MAX_MACS_IN_BINDING; i++) | |
716 | binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID); | |
717 | ||
718 | status = 0; | |
719 | ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD, | |
720 | sizeof(binding_cmd), &binding_cmd, | |
721 | &status); | |
722 | if (ret) { | |
723 | IWL_ERR(mvm, "Failed to add binding: %d\n", ret); | |
724 | return ret; | |
725 | } | |
726 | ||
727 | if (status) { | |
728 | IWL_ERR(mvm, "Binding command failed: %u\n", status); | |
729 | return -EIO; | |
730 | } | |
731 | ||
7a453973 | 732 | ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false); |
8ca151b5 JB |
733 | if (ret) |
734 | return ret; | |
735 | rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta); | |
736 | ||
737 | ret = iwl_mvm_mac_ctxt_changed(mvm, vif); | |
738 | if (ret) | |
739 | return ret; | |
740 | ||
741 | /* and some quota */ | |
742 | quota_cmd.quotas[0].id_and_color = | |
743 | cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, | |
744 | mvmvif->phy_ctxt->color)); | |
745 | quota_cmd.quotas[0].quota = cpu_to_le32(100); | |
746 | quota_cmd.quotas[0].max_duration = cpu_to_le32(1000); | |
747 | ||
748 | for (i = 1; i < MAX_BINDINGS; i++) | |
749 | quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID); | |
750 | ||
751 | ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, CMD_SYNC, | |
752 | sizeof(quota_cmd), "a_cmd); | |
753 | if (ret) | |
754 | IWL_ERR(mvm, "Failed to send quota: %d\n", ret); | |
755 | ||
756 | return 0; | |
757 | } | |
758 | ||
759 | int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) | |
760 | { | |
761 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
762 | struct iwl_d3_iter_data suspend_iter_data = { | |
763 | .mvm = mvm, | |
764 | }; | |
765 | struct ieee80211_vif *vif; | |
766 | struct iwl_mvm_vif *mvmvif; | |
767 | struct ieee80211_sta *ap_sta; | |
768 | struct iwl_mvm_sta *mvm_ap_sta; | |
769 | struct iwl_wowlan_config_cmd wowlan_config_cmd = {}; | |
770 | struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {}; | |
771 | struct iwl_wowlan_tkip_params_cmd tkip_cmd = {}; | |
772 | struct iwl_d3_manager_config d3_cfg_cmd = {}; | |
773 | struct wowlan_key_data key_data = { | |
774 | .use_rsc_tsc = false, | |
775 | .tkip = &tkip_cmd, | |
776 | .use_tkip = false, | |
777 | }; | |
778 | int ret, i; | |
779 | u16 seq; | |
780 | u8 old_aux_sta_id, old_ap_sta_id = IWL_MVM_STATION_COUNT; | |
781 | ||
782 | if (WARN_ON(!wowlan)) | |
783 | return -EINVAL; | |
784 | ||
785 | key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); | |
786 | if (!key_data.rsc_tsc) | |
787 | return -ENOMEM; | |
788 | ||
789 | mutex_lock(&mvm->mutex); | |
790 | ||
791 | old_aux_sta_id = mvm->aux_sta.sta_id; | |
792 | ||
793 | /* see if there's only a single BSS vif and it's associated */ | |
794 | ieee80211_iterate_active_interfaces_atomic( | |
795 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
796 | iwl_mvm_d3_iface_iterator, &suspend_iter_data); | |
797 | ||
798 | if (suspend_iter_data.error || !suspend_iter_data.vif) { | |
799 | ret = 1; | |
800 | goto out_noreset; | |
801 | } | |
802 | ||
803 | vif = suspend_iter_data.vif; | |
804 | mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
805 | ||
806 | ap_sta = rcu_dereference_protected( | |
807 | mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], | |
808 | lockdep_is_held(&mvm->mutex)); | |
809 | if (IS_ERR_OR_NULL(ap_sta)) { | |
810 | ret = -EINVAL; | |
811 | goto out_noreset; | |
812 | } | |
813 | ||
814 | mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; | |
815 | ||
816 | /* | |
817 | * The D3 firmware still hardcodes the AP station ID for the | |
818 | * BSS we're associated with as 0. Store the real STA ID here | |
819 | * and assign 0. When we leave this function, we'll restore | |
820 | * the original value for the resume code. | |
821 | */ | |
822 | old_ap_sta_id = mvm_ap_sta->sta_id; | |
823 | mvm_ap_sta->sta_id = 0; | |
824 | mvmvif->ap_sta_id = 0; | |
825 | ||
826 | /* TODO: wowlan_config_cmd.wowlan_ba_teardown_tids */ | |
827 | ||
828 | wowlan_config_cmd.is_11n_connection = ap_sta->ht_cap.ht_supported; | |
829 | ||
830 | /* | |
831 | * We know the last used seqno, and the uCode expects to know that | |
832 | * one, it will increment before TX. | |
833 | */ | |
834 | seq = mvm_ap_sta->last_seq_ctl & IEEE80211_SCTL_SEQ; | |
835 | wowlan_config_cmd.non_qos_seq = cpu_to_le16(seq); | |
836 | ||
837 | /* | |
838 | * For QoS counters, we store the one to use next, so subtract 0x10 | |
839 | * since the uCode will add 0x10 *before* using the value while we | |
840 | * increment after using the value (i.e. store the next value to use). | |
841 | */ | |
842 | for (i = 0; i < IWL_MAX_TID_COUNT; i++) { | |
843 | seq = mvm_ap_sta->tid_data[i].seq_number; | |
844 | seq -= 0x10; | |
845 | wowlan_config_cmd.qos_seq[i] = cpu_to_le16(seq); | |
846 | } | |
847 | ||
848 | if (wowlan->disconnect) | |
849 | wowlan_config_cmd.wakeup_filter |= | |
850 | cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | | |
851 | IWL_WOWLAN_WAKEUP_LINK_CHANGE); | |
852 | if (wowlan->magic_pkt) | |
853 | wowlan_config_cmd.wakeup_filter |= | |
854 | cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET); | |
855 | if (wowlan->gtk_rekey_failure) | |
856 | wowlan_config_cmd.wakeup_filter |= | |
857 | cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL); | |
858 | if (wowlan->eap_identity_req) | |
859 | wowlan_config_cmd.wakeup_filter |= | |
860 | cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ); | |
861 | if (wowlan->four_way_handshake) | |
862 | wowlan_config_cmd.wakeup_filter |= | |
863 | cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE); | |
864 | if (wowlan->n_patterns) | |
865 | wowlan_config_cmd.wakeup_filter |= | |
866 | cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH); | |
867 | ||
868 | if (wowlan->rfkill_release) | |
6039f3e1 | 869 | wowlan_config_cmd.wakeup_filter |= |
8ca151b5 JB |
870 | cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT); |
871 | ||
f0c2646a JB |
872 | if (wowlan->tcp) { |
873 | /* | |
6039f3e1 JB |
874 | * Set the "link change" (really "link lost") flag as well |
875 | * since that implies losing the TCP connection. | |
f0c2646a JB |
876 | */ |
877 | wowlan_config_cmd.wakeup_filter |= | |
878 | cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS | | |
879 | IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE | | |
880 | IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET | | |
881 | IWL_WOWLAN_WAKEUP_LINK_CHANGE); | |
882 | } | |
883 | ||
8ca151b5 JB |
884 | iwl_mvm_cancel_scan(mvm); |
885 | ||
886 | iwl_trans_stop_device(mvm->trans); | |
887 | ||
888 | /* | |
889 | * Set the HW restart bit -- this is mostly true as we're | |
890 | * going to load new firmware and reprogram that, though | |
891 | * the reprogramming is going to be manual to avoid adding | |
892 | * all the MACs that aren't support. | |
893 | * We don't have to clear up everything though because the | |
894 | * reprogramming is manual. When we resume, we'll actually | |
895 | * go through a proper restart sequence again to switch | |
896 | * back to the runtime firmware image. | |
897 | */ | |
898 | set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); | |
899 | ||
900 | /* We reprogram keys and shouldn't allocate new key indices */ | |
901 | memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table)); | |
902 | ||
f444eb10 JB |
903 | mvm->ptk_ivlen = 0; |
904 | mvm->ptk_icvlen = 0; | |
905 | mvm->ptk_ivlen = 0; | |
906 | mvm->ptk_icvlen = 0; | |
907 | ||
8ca151b5 JB |
908 | /* |
909 | * The D3 firmware still hardcodes the AP station ID for the | |
910 | * BSS we're associated with as 0. As a result, we have to move | |
911 | * the auxiliary station to ID 1 so the ID 0 remains free for | |
912 | * the AP station for later. | |
913 | * We set the sta_id to 1 here, and reset it to its previous | |
914 | * value (that we stored above) later. | |
915 | */ | |
916 | mvm->aux_sta.sta_id = 1; | |
917 | ||
918 | ret = iwl_mvm_load_d3_fw(mvm); | |
919 | if (ret) | |
920 | goto out; | |
921 | ||
922 | ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); | |
923 | if (ret) | |
924 | goto out; | |
925 | ||
926 | if (!iwlwifi_mod_params.sw_crypto) { | |
927 | /* | |
928 | * This needs to be unlocked due to lock ordering | |
929 | * constraints. Since we're in the suspend path | |
930 | * that isn't really a problem though. | |
931 | */ | |
932 | mutex_unlock(&mvm->mutex); | |
933 | ieee80211_iter_keys(mvm->hw, vif, | |
934 | iwl_mvm_wowlan_program_keys, | |
935 | &key_data); | |
936 | mutex_lock(&mvm->mutex); | |
937 | if (key_data.error) { | |
938 | ret = -EIO; | |
939 | goto out; | |
940 | } | |
941 | ||
942 | if (key_data.use_rsc_tsc) { | |
943 | struct iwl_host_cmd rsc_tsc_cmd = { | |
944 | .id = WOWLAN_TSC_RSC_PARAM, | |
945 | .flags = CMD_SYNC, | |
946 | .data[0] = key_data.rsc_tsc, | |
947 | .dataflags[0] = IWL_HCMD_DFL_NOCOPY, | |
948 | .len[0] = sizeof(*key_data.rsc_tsc), | |
949 | }; | |
950 | ||
951 | ret = iwl_mvm_send_cmd(mvm, &rsc_tsc_cmd); | |
952 | if (ret) | |
953 | goto out; | |
954 | } | |
955 | ||
956 | if (key_data.use_tkip) { | |
957 | ret = iwl_mvm_send_cmd_pdu(mvm, | |
958 | WOWLAN_TKIP_PARAM, | |
959 | CMD_SYNC, sizeof(tkip_cmd), | |
960 | &tkip_cmd); | |
961 | if (ret) | |
962 | goto out; | |
963 | } | |
964 | ||
965 | if (mvmvif->rekey_data.valid) { | |
966 | memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd)); | |
967 | memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, | |
968 | NL80211_KCK_LEN); | |
969 | kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN); | |
970 | memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, | |
971 | NL80211_KEK_LEN); | |
972 | kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN); | |
973 | kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; | |
974 | ||
975 | ret = iwl_mvm_send_cmd_pdu(mvm, | |
976 | WOWLAN_KEK_KCK_MATERIAL, | |
977 | CMD_SYNC, | |
978 | sizeof(kek_kck_cmd), | |
979 | &kek_kck_cmd); | |
980 | if (ret) | |
981 | goto out; | |
982 | } | |
983 | } | |
984 | ||
985 | ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, | |
986 | CMD_SYNC, sizeof(wowlan_config_cmd), | |
987 | &wowlan_config_cmd); | |
988 | if (ret) | |
989 | goto out; | |
990 | ||
991 | ret = iwl_mvm_send_patterns(mvm, wowlan); | |
992 | if (ret) | |
993 | goto out; | |
994 | ||
995 | ret = iwl_mvm_send_proto_offload(mvm, vif); | |
996 | if (ret) | |
997 | goto out; | |
998 | ||
f0c2646a JB |
999 | ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp); |
1000 | if (ret) | |
1001 | goto out; | |
1002 | ||
8ca151b5 JB |
1003 | /* must be last -- this switches firmware state */ |
1004 | ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, CMD_SYNC, | |
1005 | sizeof(d3_cfg_cmd), &d3_cfg_cmd); | |
1006 | if (ret) | |
1007 | goto out; | |
1008 | ||
1009 | clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); | |
1010 | ||
1011 | iwl_trans_d3_suspend(mvm->trans); | |
1012 | out: | |
1013 | mvm->aux_sta.sta_id = old_aux_sta_id; | |
1014 | mvm_ap_sta->sta_id = old_ap_sta_id; | |
1015 | mvmvif->ap_sta_id = old_ap_sta_id; | |
1016 | out_noreset: | |
1017 | kfree(key_data.rsc_tsc); | |
1018 | if (ret < 0) | |
1019 | ieee80211_restart_hw(mvm->hw); | |
1020 | ||
1021 | mutex_unlock(&mvm->mutex); | |
1022 | ||
1023 | return ret; | |
1024 | } | |
1025 | ||
9b26b500 JB |
1026 | static void iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm, |
1027 | struct ieee80211_vif *vif) | |
1028 | { | |
1029 | u32 base = mvm->error_event_table; | |
1030 | struct error_table_start { | |
1031 | /* cf. struct iwl_error_event_table */ | |
1032 | u32 valid; | |
1033 | u32 error_id; | |
1034 | } err_info; | |
1035 | struct cfg80211_wowlan_wakeup wakeup = { | |
1036 | .pattern_idx = -1, | |
1037 | }; | |
1038 | struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; | |
1039 | struct iwl_host_cmd cmd = { | |
1040 | .id = WOWLAN_GET_STATUSES, | |
1041 | .flags = CMD_SYNC | CMD_WANT_SKB, | |
1042 | }; | |
1043 | struct iwl_wowlan_status *status; | |
1044 | u32 reasons; | |
1045 | int ret, len; | |
9b26b500 JB |
1046 | struct sk_buff *pkt = NULL; |
1047 | ||
1048 | iwl_trans_read_mem_bytes(mvm->trans, base, | |
1049 | &err_info, sizeof(err_info)); | |
1050 | ||
1051 | if (err_info.valid) { | |
1052 | IWL_INFO(mvm, "error table is valid (%d)\n", | |
1053 | err_info.valid); | |
1054 | if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) { | |
1055 | wakeup.rfkill_release = true; | |
1056 | ieee80211_report_wowlan_wakeup(vif, &wakeup, | |
1057 | GFP_KERNEL); | |
1058 | } | |
1059 | return; | |
1060 | } | |
1061 | ||
1062 | /* only for tracing for now */ | |
1063 | ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, CMD_SYNC, 0, NULL); | |
1064 | if (ret) | |
1065 | IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret); | |
1066 | ||
1067 | ret = iwl_mvm_send_cmd(mvm, &cmd); | |
1068 | if (ret) { | |
1069 | IWL_ERR(mvm, "failed to query status (%d)\n", ret); | |
1070 | return; | |
1071 | } | |
1072 | ||
1073 | /* RF-kill already asserted again... */ | |
1074 | if (!cmd.resp_pkt) | |
1075 | return; | |
1076 | ||
1077 | len = le32_to_cpu(cmd.resp_pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; | |
1078 | if (len - sizeof(struct iwl_cmd_header) < sizeof(*status)) { | |
1079 | IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); | |
1080 | goto out; | |
1081 | } | |
1082 | ||
1083 | status = (void *)cmd.resp_pkt->data; | |
1084 | ||
1085 | if (len - sizeof(struct iwl_cmd_header) != | |
f444eb10 JB |
1086 | sizeof(*status) + |
1087 | ALIGN(le32_to_cpu(status->wake_packet_bufsize), 4)) { | |
9b26b500 JB |
1088 | IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); |
1089 | goto out; | |
1090 | } | |
1091 | ||
1092 | reasons = le32_to_cpu(status->wakeup_reasons); | |
1093 | ||
1094 | if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { | |
1095 | wakeup_report = NULL; | |
1096 | goto report; | |
1097 | } | |
1098 | ||
f444eb10 | 1099 | if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET) |
9b26b500 | 1100 | wakeup.magic_pkt = true; |
9b26b500 | 1101 | |
f444eb10 | 1102 | if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN) |
9b26b500 JB |
1103 | wakeup.pattern_idx = |
1104 | le16_to_cpu(status->pattern_number); | |
9b26b500 JB |
1105 | |
1106 | if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON | | |
1107 | IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH)) | |
1108 | wakeup.disconnect = true; | |
1109 | ||
f444eb10 | 1110 | if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE) |
9b26b500 | 1111 | wakeup.gtk_rekey_failure = true; |
9b26b500 | 1112 | |
f444eb10 | 1113 | if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) |
9b26b500 | 1114 | wakeup.rfkill_release = true; |
9b26b500 | 1115 | |
f444eb10 | 1116 | if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST) |
9b26b500 | 1117 | wakeup.eap_identity_req = true; |
9b26b500 | 1118 | |
f444eb10 | 1119 | if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE) |
9b26b500 | 1120 | wakeup.four_way_handshake = true; |
9b26b500 | 1121 | |
f0c2646a JB |
1122 | if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS) |
1123 | wakeup.tcp_connlost = true; | |
1124 | ||
1125 | if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE) | |
1126 | wakeup.tcp_nomoretokens = true; | |
1127 | ||
1128 | if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET) | |
1129 | wakeup.tcp_match = true; | |
1130 | ||
9b26b500 | 1131 | if (status->wake_packet_bufsize) { |
f444eb10 JB |
1132 | int pktsize = le32_to_cpu(status->wake_packet_bufsize); |
1133 | int pktlen = le32_to_cpu(status->wake_packet_length); | |
1134 | const u8 *pktdata = status->wake_packet; | |
1135 | struct ieee80211_hdr *hdr = (void *)pktdata; | |
1136 | int truncated = pktlen - pktsize; | |
1137 | ||
1138 | /* this would be a firmware bug */ | |
1139 | if (WARN_ON_ONCE(truncated < 0)) | |
1140 | truncated = 0; | |
1141 | ||
1142 | if (ieee80211_is_data(hdr->frame_control)) { | |
1143 | int hdrlen = ieee80211_hdrlen(hdr->frame_control); | |
1144 | int ivlen = 0, icvlen = 4; /* also FCS */ | |
9b26b500 | 1145 | |
9b26b500 JB |
1146 | pkt = alloc_skb(pktsize, GFP_KERNEL); |
1147 | if (!pkt) | |
1148 | goto report; | |
f444eb10 JB |
1149 | |
1150 | memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen); | |
1151 | pktdata += hdrlen; | |
1152 | pktsize -= hdrlen; | |
1153 | ||
1154 | if (ieee80211_has_protected(hdr->frame_control)) { | |
1155 | if (is_multicast_ether_addr(hdr->addr1)) { | |
1156 | ivlen = mvm->gtk_ivlen; | |
1157 | icvlen += mvm->gtk_icvlen; | |
1158 | } else { | |
1159 | ivlen = mvm->ptk_ivlen; | |
1160 | icvlen += mvm->ptk_icvlen; | |
1161 | } | |
1162 | } | |
1163 | ||
1164 | /* if truncated, FCS/ICV is (partially) gone */ | |
1165 | if (truncated >= icvlen) { | |
1166 | icvlen = 0; | |
1167 | truncated -= icvlen; | |
1168 | } else { | |
1169 | icvlen -= truncated; | |
1170 | truncated = 0; | |
1171 | } | |
1172 | ||
1173 | pktsize -= ivlen + icvlen; | |
1174 | pktdata += ivlen; | |
1175 | ||
1176 | memcpy(skb_put(pkt, pktsize), pktdata, pktsize); | |
1177 | ||
9b26b500 JB |
1178 | if (ieee80211_data_to_8023(pkt, vif->addr, vif->type)) |
1179 | goto report; | |
1180 | wakeup.packet = pkt->data; | |
1181 | wakeup.packet_present_len = pkt->len; | |
f444eb10 | 1182 | wakeup.packet_len = pkt->len - truncated; |
9b26b500 JB |
1183 | wakeup.packet_80211 = false; |
1184 | } else { | |
f444eb10 JB |
1185 | int fcslen = 4; |
1186 | ||
1187 | if (truncated >= 4) { | |
1188 | truncated -= 4; | |
1189 | fcslen = 0; | |
1190 | } else { | |
1191 | fcslen -= truncated; | |
1192 | truncated = 0; | |
1193 | } | |
1194 | pktsize -= fcslen; | |
9b26b500 JB |
1195 | wakeup.packet = status->wake_packet; |
1196 | wakeup.packet_present_len = pktsize; | |
f444eb10 | 1197 | wakeup.packet_len = pktlen - truncated; |
9b26b500 JB |
1198 | wakeup.packet_80211 = true; |
1199 | } | |
1200 | } | |
1201 | ||
1202 | report: | |
1203 | ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL); | |
1204 | kfree_skb(pkt); | |
1205 | ||
1206 | out: | |
1207 | iwl_free_resp(&cmd); | |
1208 | } | |
1209 | ||
8ca151b5 JB |
1210 | int iwl_mvm_resume(struct ieee80211_hw *hw) |
1211 | { | |
1212 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1213 | struct iwl_d3_iter_data resume_iter_data = { | |
1214 | .mvm = mvm, | |
1215 | }; | |
1216 | struct ieee80211_vif *vif = NULL; | |
8ca151b5 JB |
1217 | int ret; |
1218 | enum iwl_d3_status d3_status; | |
8ca151b5 JB |
1219 | |
1220 | mutex_lock(&mvm->mutex); | |
1221 | ||
1222 | /* get the BSS vif pointer again */ | |
1223 | ieee80211_iterate_active_interfaces_atomic( | |
1224 | mvm->hw, IEEE80211_IFACE_ITER_NORMAL, | |
1225 | iwl_mvm_d3_iface_iterator, &resume_iter_data); | |
1226 | ||
1227 | if (WARN_ON(resume_iter_data.error || !resume_iter_data.vif)) | |
1228 | goto out_unlock; | |
1229 | ||
1230 | vif = resume_iter_data.vif; | |
1231 | ||
1232 | ret = iwl_trans_d3_resume(mvm->trans, &d3_status); | |
1233 | if (ret) | |
1234 | goto out_unlock; | |
1235 | ||
1236 | if (d3_status != IWL_D3_STATUS_ALIVE) { | |
1237 | IWL_INFO(mvm, "Device was reset during suspend\n"); | |
1238 | goto out_unlock; | |
1239 | } | |
1240 | ||
9b26b500 | 1241 | iwl_mvm_query_wakeup_reasons(mvm, vif); |
8ca151b5 JB |
1242 | |
1243 | out_unlock: | |
1244 | mutex_unlock(&mvm->mutex); | |
1245 | ||
1246 | if (vif) | |
1247 | ieee80211_resume_disconnect(vif); | |
1248 | ||
1249 | /* return 1 to reconfigure the device */ | |
1250 | set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); | |
1251 | return 1; | |
1252 | } | |
1253 | ||
1254 | void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled) | |
1255 | { | |
1256 | struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); | |
1257 | ||
1258 | device_set_wakeup_enable(mvm->trans->dev, enabled); | |
1259 | } |