1 /******************************************************************************
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.
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 Intel Deutschland GmbH
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
37 * Copyright(c) 2016 Intel Deutschland GmbH
38 * All rights reserved.
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * * Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
66 *****************************************************************************/
68 #include <linux/etherdevice.h>
71 #include <net/cfg80211.h>
74 #include <net/addrconf.h>
75 #include "iwl-modparams.h"
79 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
80 struct ieee80211_vif *vif,
81 struct cfg80211_gtk_rekey_data *data)
83 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
84 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
86 if (iwlwifi_mod_params.sw_crypto)
89 mutex_lock(&mvm->mutex);
91 memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN);
92 memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN);
93 mvmvif->rekey_data.replay_ctr =
94 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
95 mvmvif->rekey_data.valid = true;
97 mutex_unlock(&mvm->mutex);
100 #if IS_ENABLED(CONFIG_IPV6)
101 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
102 struct ieee80211_vif *vif,
103 struct inet6_dev *idev)
105 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
106 struct inet6_ifaddr *ifa;
109 memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs));
111 read_lock_bh(&idev->lock);
112 list_for_each_entry(ifa, &idev->addr_list, if_list) {
113 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
114 if (ifa->flags & IFA_F_TENTATIVE)
115 __set_bit(idx, mvmvif->tentative_addrs);
117 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
120 read_unlock_bh(&idev->lock);
122 mvmvif->num_target_ipv6_addrs = idx;
126 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
127 struct ieee80211_vif *vif, int idx)
129 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
131 mvmvif->tx_key_idx = idx;
134 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
138 for (i = 0; i < IWL_P1K_SIZE; i++)
139 out[i] = cpu_to_le16(p1k[i]);
142 static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key,
143 struct iwl_mvm_key_pn *ptk_pn,
144 struct ieee80211_key_seq *seq,
147 const u8 *ret = seq->ccmp.pn;
150 /* get the PN from mac80211, used on the default queue */
151 ieee80211_get_key_rx_seq(key, tid, seq);
153 /* and use the internal data for the other queues */
154 for (i = 1; i < queues; i++) {
155 const u8 *tmp = ptk_pn->q[i].pn[tid];
157 if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0)
164 struct wowlan_key_data {
165 struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
166 struct iwl_wowlan_tkip_params_cmd *tkip;
167 bool error, use_rsc_tsc, use_tkip, configure_keys;
171 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
172 struct ieee80211_vif *vif,
173 struct ieee80211_sta *sta,
174 struct ieee80211_key_conf *key,
177 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
178 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
179 struct wowlan_key_data *data = _data;
180 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
181 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
182 struct iwl_p1k_cache *rx_p1ks;
184 struct ieee80211_key_seq seq;
186 u16 p1k[IWL_P1K_SIZE];
189 switch (key->cipher) {
190 case WLAN_CIPHER_SUITE_WEP40:
191 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
193 struct iwl_mvm_wep_key_cmd wep_key_cmd;
194 struct iwl_mvm_wep_key wep_key;
196 .wep_key_cmd.mac_id_n_color =
197 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
199 .wep_key_cmd.num_keys = 1,
200 /* firmware sets STA_KEY_FLG_WEP_13BYTES */
201 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
202 .wep_key.key_index = key->keyidx,
203 .wep_key.key_size = key->keylen,
207 * This will fail -- the key functions don't set support
208 * pairwise WEP keys. However, that's better than silently
209 * failing WoWLAN. Or maybe not?
211 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
214 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
215 if (key->keyidx == mvmvif->tx_key_idx) {
216 /* TX key must be at offset 0 */
217 wkc.wep_key.key_offset = 0;
219 /* others start at 1 */
221 wkc.wep_key.key_offset = data->wep_key_idx;
224 if (data->configure_keys) {
225 mutex_lock(&mvm->mutex);
226 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0,
228 data->error = ret != 0;
230 mvm->ptk_ivlen = key->iv_len;
231 mvm->ptk_icvlen = key->icv_len;
232 mvm->gtk_ivlen = key->iv_len;
233 mvm->gtk_icvlen = key->icv_len;
234 mutex_unlock(&mvm->mutex);
237 /* don't upload key again */
243 case WLAN_CIPHER_SUITE_AES_CMAC:
245 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
246 * but we also shouldn't abort suspend due to that. It does have
247 * support for the IGTK key renewal, but doesn't really use the
248 * IGTK for anything. This means we could spuriously wake up or
249 * be deauthenticated, but that was considered acceptable.
252 case WLAN_CIPHER_SUITE_TKIP:
256 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
257 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
259 rx_p1ks = data->tkip->rx_uni;
261 pn64 = atomic64_read(&key->tx_pn);
262 tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64));
263 tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64));
265 ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64),
267 iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k);
269 memcpy(data->tkip->mic_keys.tx,
270 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
273 rx_mic_key = data->tkip->mic_keys.rx_unicast;
276 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
277 rx_p1ks = data->tkip->rx_multi;
278 rx_mic_key = data->tkip->mic_keys.rx_mcast;
282 * For non-QoS this relies on the fact that both the uCode and
283 * mac80211 use TID 0 (as they need to to avoid replay attacks)
284 * for checking the IV in the frames.
286 for (i = 0; i < IWL_NUM_RSC; i++) {
287 ieee80211_get_key_rx_seq(key, i, &seq);
288 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
289 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
290 /* wrapping isn't allowed, AP must rekey */
291 if (seq.tkip.iv32 > cur_rx_iv32)
292 cur_rx_iv32 = seq.tkip.iv32;
295 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
297 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
298 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
299 cur_rx_iv32 + 1, p1k);
300 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
303 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
306 data->use_tkip = true;
307 data->use_rsc_tsc = true;
309 case WLAN_CIPHER_SUITE_CCMP:
313 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
314 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
316 pn64 = atomic64_read(&key->tx_pn);
317 aes_tx_sc->pn = cpu_to_le64(pn64);
319 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
323 * For non-QoS this relies on the fact that both the uCode and
324 * mac80211/our RX code use TID 0 for checking the PN.
326 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
327 struct iwl_mvm_sta *mvmsta;
328 struct iwl_mvm_key_pn *ptk_pn;
331 mvmsta = iwl_mvm_sta_from_mac80211(sta);
332 ptk_pn = rcu_dereference_protected(
333 mvmsta->ptk_pn[key->keyidx],
334 lockdep_is_held(&mvm->mutex));
335 if (WARN_ON(!ptk_pn))
338 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
339 pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i,
340 mvm->trans->num_rx_queues);
341 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
349 for (i = 0; i < IWL_NUM_RSC; i++) {
350 u8 *pn = seq.ccmp.pn;
352 ieee80211_get_key_rx_seq(key, i, &seq);
353 aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
361 data->use_rsc_tsc = true;
365 if (data->configure_keys) {
366 mutex_lock(&mvm->mutex);
368 * The D3 firmware hardcodes the key offset 0 as the key it
369 * uses to transmit packets to the AP, i.e. the PTK.
371 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
372 mvm->ptk_ivlen = key->iv_len;
373 mvm->ptk_icvlen = key->icv_len;
374 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0);
377 * firmware only supports TSC/RSC for a single key,
378 * so if there are multiple keep overwriting them
379 * with new ones -- this relies on mac80211 doing
382 mvm->gtk_ivlen = key->iv_len;
383 mvm->gtk_icvlen = key->icv_len;
384 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1);
386 mutex_unlock(&mvm->mutex);
387 data->error = ret != 0;
391 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
392 struct cfg80211_wowlan *wowlan)
394 struct iwl_wowlan_patterns_cmd *pattern_cmd;
395 struct iwl_host_cmd cmd = {
396 .id = WOWLAN_PATTERNS,
397 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
401 if (!wowlan->n_patterns)
404 cmd.len[0] = sizeof(*pattern_cmd) +
405 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern);
407 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
411 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
413 for (i = 0; i < wowlan->n_patterns; i++) {
414 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
416 memcpy(&pattern_cmd->patterns[i].mask,
417 wowlan->patterns[i].mask, mask_len);
418 memcpy(&pattern_cmd->patterns[i].pattern,
419 wowlan->patterns[i].pattern,
420 wowlan->patterns[i].pattern_len);
421 pattern_cmd->patterns[i].mask_size = mask_len;
422 pattern_cmd->patterns[i].pattern_size =
423 wowlan->patterns[i].pattern_len;
426 cmd.data[0] = pattern_cmd;
427 err = iwl_mvm_send_cmd(mvm, &cmd);
432 enum iwl_mvm_tcp_packet_type {
441 static __le16 pseudo_hdr_check(int len, __be32 saddr, __be32 daddr)
443 __sum16 check = tcp_v4_check(len, saddr, daddr, 0);
444 return cpu_to_le16(be16_to_cpu((__force __be16)check));
447 static void iwl_mvm_build_tcp_packet(struct ieee80211_vif *vif,
448 struct cfg80211_wowlan_tcp *tcp,
449 void *_pkt, u8 *mask,
450 __le16 *pseudo_hdr_csum,
451 enum iwl_mvm_tcp_packet_type ptype)
458 } __packed *pkt = _pkt;
459 u16 ip_tot_len = sizeof(struct iphdr) + sizeof(struct tcphdr);
462 pkt->eth.h_proto = cpu_to_be16(ETH_P_IP),
465 pkt->ip.protocol = IPPROTO_TCP;
469 case MVM_TCP_TX_DATA:
471 memcpy(pkt->eth.h_dest, tcp->dst_mac, ETH_ALEN);
472 memcpy(pkt->eth.h_source, vif->addr, ETH_ALEN);
474 pkt->ip.saddr = tcp->src;
475 pkt->ip.daddr = tcp->dst;
476 pkt->tcp.source = cpu_to_be16(tcp->src_port);
477 pkt->tcp.dest = cpu_to_be16(tcp->dst_port);
478 /* overwritten for TX SYN later */
479 pkt->tcp.doff = sizeof(struct tcphdr) / 4;
480 pkt->tcp.window = cpu_to_be16(65000);
482 case MVM_TCP_RX_SYNACK:
484 case MVM_TCP_RX_WAKE:
485 memcpy(pkt->eth.h_dest, vif->addr, ETH_ALEN);
486 memcpy(pkt->eth.h_source, tcp->dst_mac, ETH_ALEN);
487 pkt->ip.saddr = tcp->dst;
488 pkt->ip.daddr = tcp->src;
489 pkt->tcp.source = cpu_to_be16(tcp->dst_port);
490 pkt->tcp.dest = cpu_to_be16(tcp->src_port);
499 /* firmware assumes 8 option bytes - 8 NOPs for now */
500 memset(pkt->data, 0x01, 8);
502 pkt->tcp.doff = (sizeof(struct tcphdr) + 8) / 4;
505 case MVM_TCP_TX_DATA:
506 ip_tot_len += tcp->payload_len;
507 memcpy(pkt->data, tcp->payload, tcp->payload_len);
515 case MVM_TCP_RX_SYNACK:
522 case MVM_TCP_RX_WAKE:
523 ip_tot_len += tcp->wake_len;
526 memcpy(pkt->data, tcp->wake_data, tcp->wake_len);
532 case MVM_TCP_TX_DATA:
534 pkt->ip.tot_len = cpu_to_be16(ip_tot_len);
535 pkt->ip.check = ip_fast_csum(&pkt->ip, pkt->ip.ihl);
537 case MVM_TCP_RX_WAKE:
538 for (i = 0; i < DIV_ROUND_UP(tcp->wake_len, 8); i++) {
539 u8 tmp = tcp->wake_mask[i];
540 mask[i + 6] |= tmp << 6;
541 if (i + 1 < DIV_ROUND_UP(tcp->wake_len, 8))
542 mask[i + 7] = tmp >> 2;
544 /* fall through for ethernet/IP/TCP headers mask */
545 case MVM_TCP_RX_SYNACK:
547 mask[0] = 0xff; /* match ethernet */
549 * match ethernet, ip.version, ip.ihl
550 * the ip.ihl half byte is really masked out by firmware
553 mask[2] = 0x80; /* match ip.protocol */
554 mask[3] = 0xfc; /* match ip.saddr, ip.daddr */
555 mask[4] = 0x3f; /* match ip.daddr, tcp.source, tcp.dest */
556 mask[5] = 0x80; /* match tcp flags */
557 /* leave rest (0 or set for MVM_TCP_RX_WAKE) */
561 *pseudo_hdr_csum = pseudo_hdr_check(ip_tot_len - sizeof(struct iphdr),
562 pkt->ip.saddr, pkt->ip.daddr);
565 static int iwl_mvm_send_remote_wake_cfg(struct iwl_mvm *mvm,
566 struct ieee80211_vif *vif,
567 struct cfg80211_wowlan_tcp *tcp)
569 struct iwl_wowlan_remote_wake_config *cfg;
570 struct iwl_host_cmd cmd = {
571 .id = REMOTE_WAKE_CONFIG_CMD,
572 .len = { sizeof(*cfg), },
573 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
580 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
585 cfg->max_syn_retries = 10;
586 cfg->max_data_retries = 10;
587 cfg->tcp_syn_ack_timeout = 1; /* seconds */
588 cfg->tcp_ack_timeout = 1; /* seconds */
591 iwl_mvm_build_tcp_packet(
592 vif, tcp, cfg->syn_tx.data, NULL,
593 &cfg->syn_tx.info.tcp_pseudo_header_checksum,
595 cfg->syn_tx.info.tcp_payload_length = 0;
598 iwl_mvm_build_tcp_packet(
599 vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask,
600 &cfg->synack_rx.info.tcp_pseudo_header_checksum,
602 cfg->synack_rx.info.tcp_payload_length = 0;
604 /* KEEPALIVE/ACK (TX) */
605 iwl_mvm_build_tcp_packet(
606 vif, tcp, cfg->keepalive_tx.data, NULL,
607 &cfg->keepalive_tx.info.tcp_pseudo_header_checksum,
609 cfg->keepalive_tx.info.tcp_payload_length =
610 cpu_to_le16(tcp->payload_len);
611 cfg->sequence_number_offset = tcp->payload_seq.offset;
612 /* length must be 0..4, the field is little endian */
613 cfg->sequence_number_length = tcp->payload_seq.len;
614 cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start);
615 cfg->keepalive_interval = cpu_to_le16(tcp->data_interval);
616 if (tcp->payload_tok.len) {
617 cfg->token_offset = tcp->payload_tok.offset;
618 cfg->token_length = tcp->payload_tok.len;
620 cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len);
621 memcpy(cfg->tokens, tcp->payload_tok.token_stream,
624 /* set tokens to max value to almost never run out */
625 cfg->num_tokens = cpu_to_le16(65535);
629 iwl_mvm_build_tcp_packet(
630 vif, tcp, cfg->keepalive_ack_rx.data,
631 cfg->keepalive_ack_rx.rx_mask,
632 &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum,
634 cfg->keepalive_ack_rx.info.tcp_payload_length = 0;
637 iwl_mvm_build_tcp_packet(
638 vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask,
639 &cfg->wake_rx.info.tcp_pseudo_header_checksum,
641 cfg->wake_rx.info.tcp_payload_length =
642 cpu_to_le16(tcp->wake_len);
645 iwl_mvm_build_tcp_packet(
646 vif, tcp, cfg->fin_tx.data, NULL,
647 &cfg->fin_tx.info.tcp_pseudo_header_checksum,
649 cfg->fin_tx.info.tcp_payload_length = 0;
651 ret = iwl_mvm_send_cmd(mvm, &cmd);
657 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
658 struct ieee80211_sta *ap_sta)
660 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
661 struct ieee80211_chanctx_conf *ctx;
662 u8 chains_static, chains_dynamic;
663 struct cfg80211_chan_def chandef;
665 struct iwl_binding_cmd binding_cmd = {};
666 struct iwl_time_quota_cmd quota_cmd = {};
669 /* add back the PHY */
670 if (WARN_ON(!mvmvif->phy_ctxt))
674 ctx = rcu_dereference(vif->chanctx_conf);
680 chains_static = ctx->rx_chains_static;
681 chains_dynamic = ctx->rx_chains_dynamic;
684 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
685 chains_static, chains_dynamic);
689 /* add back the MAC */
690 mvmvif->uploaded = false;
692 if (WARN_ON(!vif->bss_conf.assoc))
695 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
699 /* add back binding - XXX refactor? */
700 binding_cmd.id_and_color =
701 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
702 mvmvif->phy_ctxt->color));
703 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
705 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
706 mvmvif->phy_ctxt->color));
707 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
709 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
710 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
713 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
714 sizeof(binding_cmd), &binding_cmd,
717 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
722 IWL_ERR(mvm, "Binding command failed: %u\n", status);
726 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false, 0);
729 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
731 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
736 quota_cmd.quotas[0].id_and_color =
737 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
738 mvmvif->phy_ctxt->color));
739 quota_cmd.quotas[0].quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
740 quota_cmd.quotas[0].max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
742 for (i = 1; i < MAX_BINDINGS; i++)
743 quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID);
745 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
746 sizeof(quota_cmd), "a_cmd);
748 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
750 if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
751 IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
756 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
757 struct ieee80211_vif *vif)
759 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
760 struct iwl_nonqos_seq_query_cmd query_cmd = {
761 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
763 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
766 struct iwl_host_cmd cmd = {
767 .id = NON_QOS_TX_COUNTER_CMD,
768 .flags = CMD_WANT_SKB,
773 cmd.data[0] = &query_cmd;
774 cmd.len[0] = sizeof(query_cmd);
776 err = iwl_mvm_send_cmd(mvm, &cmd);
780 size = iwl_rx_packet_payload_len(cmd.resp_pkt);
781 if (size < sizeof(__le16)) {
784 err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
785 /* firmware returns next, not last-used seqno */
786 err = (u16) (err - 0x10);
793 void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
795 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
796 struct iwl_nonqos_seq_query_cmd query_cmd = {
797 .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
799 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
801 .value = cpu_to_le16(mvmvif->seqno),
804 /* return if called during restart, not resume from D3 */
805 if (!mvmvif->seqno_valid)
808 mvmvif->seqno_valid = false;
810 if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
811 sizeof(query_cmd), &query_cmd))
812 IWL_ERR(mvm, "failed to set non-QoS seqno\n");
815 static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
817 iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
819 iwl_mvm_stop_device(mvm);
821 * Set the HW restart bit -- this is mostly true as we're
822 * going to load new firmware and reprogram that, though
823 * the reprogramming is going to be manual to avoid adding
824 * all the MACs that aren't support.
825 * We don't have to clear up everything though because the
826 * reprogramming is manual. When we resume, we'll actually
827 * go through a proper restart sequence again to switch
828 * back to the runtime firmware image.
830 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
832 /* the fw is reset, so all the keys are cleared */
833 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
840 return iwl_mvm_load_d3_fw(mvm);
844 iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
845 struct cfg80211_wowlan *wowlan,
846 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
847 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
848 struct ieee80211_sta *ap_sta)
851 struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
853 /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
855 wowlan_config_cmd->is_11n_connection =
856 ap_sta->ht_cap.ht_supported;
857 wowlan_config_cmd->flags = ENABLE_L3_FILTERING |
858 ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING;
860 /* Query the last used seqno and set it */
861 ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
865 wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
867 iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
869 if (wowlan->disconnect)
870 wowlan_config_cmd->wakeup_filter |=
871 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
872 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
873 if (wowlan->magic_pkt)
874 wowlan_config_cmd->wakeup_filter |=
875 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
876 if (wowlan->gtk_rekey_failure)
877 wowlan_config_cmd->wakeup_filter |=
878 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
879 if (wowlan->eap_identity_req)
880 wowlan_config_cmd->wakeup_filter |=
881 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
882 if (wowlan->four_way_handshake)
883 wowlan_config_cmd->wakeup_filter |=
884 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
885 if (wowlan->n_patterns)
886 wowlan_config_cmd->wakeup_filter |=
887 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
889 if (wowlan->rfkill_release)
890 wowlan_config_cmd->wakeup_filter |=
891 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
895 * Set the "link change" (really "link lost") flag as well
896 * since that implies losing the TCP connection.
898 wowlan_config_cmd->wakeup_filter |=
899 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
900 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
901 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
902 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
909 iwl_mvm_iter_d0i3_ap_keys(struct iwl_mvm *mvm,
910 struct ieee80211_vif *vif,
911 void (*iter)(struct ieee80211_hw *hw,
912 struct ieee80211_vif *vif,
913 struct ieee80211_sta *sta,
914 struct ieee80211_key_conf *key,
918 struct ieee80211_sta *ap_sta;
922 ap_sta = rcu_dereference(mvm->fw_id_to_mac_id[mvm->d0i3_ap_sta_id]);
923 if (IS_ERR_OR_NULL(ap_sta))
926 ieee80211_iter_keys_rcu(mvm->hw, vif, iter, data);
931 int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm,
932 struct ieee80211_vif *vif,
936 struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {};
937 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
938 bool unified = fw_has_capa(&mvm->fw->ucode_capa,
939 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
940 struct wowlan_key_data key_data = {
941 .configure_keys = !d0i3 && !unified,
942 .use_rsc_tsc = false,
946 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
949 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
950 if (!key_data.rsc_tsc)
954 * if we have to configure keys, call ieee80211_iter_keys(),
955 * as we need non-atomic context in order to take the
957 * for the d0i3 we can't use ieee80211_iter_keys(), as
958 * taking (almost) any mutex might result in deadlock.
962 * Note that currently we don't propagate cmd_flags
963 * to the iterator. In case of key_data.configure_keys,
964 * all the configured commands are SYNC, and
965 * iwl_mvm_wowlan_program_keys() will take care of
966 * locking/unlocking mvm->mutex.
968 ieee80211_iter_keys(mvm->hw, vif,
969 iwl_mvm_wowlan_program_keys,
972 iwl_mvm_iter_d0i3_ap_keys(mvm, vif,
973 iwl_mvm_wowlan_program_keys,
977 if (key_data.error) {
982 if (key_data.use_rsc_tsc) {
983 ret = iwl_mvm_send_cmd_pdu(mvm,
984 WOWLAN_TSC_RSC_PARAM, cmd_flags,
985 sizeof(*key_data.rsc_tsc),
991 if (key_data.use_tkip) {
992 ret = iwl_mvm_send_cmd_pdu(mvm,
994 cmd_flags, sizeof(tkip_cmd),
1000 /* configure rekey data only if offloaded rekey is supported (d3) */
1001 if (mvmvif->rekey_data.valid && !d0i3) {
1002 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1003 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1005 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1006 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1008 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1009 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1011 ret = iwl_mvm_send_cmd_pdu(mvm,
1012 WOWLAN_KEK_KCK_MATERIAL, cmd_flags,
1013 sizeof(kek_kck_cmd),
1020 kfree(key_data.rsc_tsc);
1025 iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
1026 struct cfg80211_wowlan *wowlan,
1027 struct iwl_wowlan_config_cmd *wowlan_config_cmd,
1028 struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
1029 struct ieee80211_sta *ap_sta)
1032 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1033 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1035 if (!unified_image) {
1036 ret = iwl_mvm_switch_to_d3(mvm);
1040 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1045 if (!iwlwifi_mod_params.sw_crypto) {
1047 * This needs to be unlocked due to lock ordering
1048 * constraints. Since we're in the suspend path
1049 * that isn't really a problem though.
1051 mutex_unlock(&mvm->mutex);
1052 ret = iwl_mvm_wowlan_config_key_params(mvm, vif, false,
1054 mutex_lock(&mvm->mutex);
1059 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1060 sizeof(*wowlan_config_cmd),
1065 ret = iwl_mvm_send_patterns(mvm, wowlan);
1069 ret = iwl_mvm_send_proto_offload(mvm, vif, false, true, 0);
1073 ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp);
1078 iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
1079 struct cfg80211_wowlan *wowlan,
1080 struct cfg80211_sched_scan_request *nd_config,
1081 struct ieee80211_vif *vif)
1083 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1085 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1086 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1088 if (!unified_image) {
1089 ret = iwl_mvm_switch_to_d3(mvm);
1093 /* In theory, we wouldn't have to stop a running sched
1094 * scan in order to start another one (for
1095 * net-detect). But in practice this doesn't seem to
1096 * work properly, so stop any running sched_scan now.
1098 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1103 /* rfkill release can be either for wowlan or netdetect */
1104 if (wowlan->rfkill_release)
1105 wowlan_config_cmd.wakeup_filter |=
1106 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
1108 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
1109 sizeof(wowlan_config_cmd),
1110 &wowlan_config_cmd);
1114 ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
1115 IWL_MVM_SCAN_NETDETECT);
1119 if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
1122 /* save the sched scan matchsets... */
1123 if (nd_config->n_match_sets) {
1124 mvm->nd_match_sets = kmemdup(nd_config->match_sets,
1125 sizeof(*nd_config->match_sets) *
1126 nd_config->n_match_sets,
1128 if (mvm->nd_match_sets)
1129 mvm->n_nd_match_sets = nd_config->n_match_sets;
1132 /* ...and the sched scan channels for later reporting */
1133 mvm->nd_channels = kmemdup(nd_config->channels,
1134 sizeof(*nd_config->channels) *
1135 nd_config->n_channels,
1137 if (mvm->nd_channels)
1138 mvm->n_nd_channels = nd_config->n_channels;
1143 static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
1145 kfree(mvm->nd_match_sets);
1146 mvm->nd_match_sets = NULL;
1147 mvm->n_nd_match_sets = 0;
1148 kfree(mvm->nd_channels);
1149 mvm->nd_channels = NULL;
1150 mvm->n_nd_channels = 0;
1153 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
1154 struct cfg80211_wowlan *wowlan,
1157 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1158 struct ieee80211_vif *vif = NULL;
1159 struct iwl_mvm_vif *mvmvif = NULL;
1160 struct ieee80211_sta *ap_sta = NULL;
1161 struct iwl_d3_manager_config d3_cfg_cmd_data = {
1163 * Program the minimum sleep time to 10 seconds, as many
1164 * platforms have issues processing a wakeup signal while
1165 * still being in the process of suspending.
1167 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
1169 struct iwl_host_cmd d3_cfg_cmd = {
1170 .id = D3_CONFIG_CMD,
1171 .flags = CMD_WANT_SKB,
1172 .data[0] = &d3_cfg_cmd_data,
1173 .len[0] = sizeof(d3_cfg_cmd_data),
1176 int len __maybe_unused;
1177 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1178 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1182 * mac80211 shouldn't get here, but for D3 test
1183 * it doesn't warrant a warning
1189 mutex_lock(&mvm->mutex);
1191 vif = iwl_mvm_get_bss_vif(mvm);
1192 if (IS_ERR_OR_NULL(vif)) {
1197 mvmvif = iwl_mvm_vif_from_mac80211(vif);
1199 if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) {
1200 /* if we're not associated, this must be netdetect */
1201 if (!wowlan->nd_config) {
1206 ret = iwl_mvm_netdetect_config(
1207 mvm, wowlan, wowlan->nd_config, vif);
1211 mvm->net_detect = true;
1213 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
1215 ap_sta = rcu_dereference_protected(
1216 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
1217 lockdep_is_held(&mvm->mutex));
1218 if (IS_ERR_OR_NULL(ap_sta)) {
1223 ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1224 vif, mvmvif, ap_sta);
1227 ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
1228 vif, mvmvif, ap_sta);
1232 mvm->net_detect = false;
1235 ret = iwl_mvm_power_update_device(mvm);
1239 ret = iwl_mvm_power_update_mac(mvm);
1243 #ifdef CONFIG_IWLWIFI_DEBUGFS
1244 if (mvm->d3_wake_sysassert)
1245 d3_cfg_cmd_data.wakeup_flags |=
1246 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1249 /* must be last -- this switches firmware state */
1250 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1253 #ifdef CONFIG_IWLWIFI_DEBUGFS
1254 len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
1255 if (len >= sizeof(u32)) {
1256 mvm->d3_test_pme_ptr =
1257 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1260 iwl_free_resp(&d3_cfg_cmd);
1262 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1264 iwl_trans_d3_suspend(mvm->trans, test, !unified_image);
1267 iwl_mvm_free_nd(mvm);
1269 if (!unified_image) {
1270 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
1271 if (mvm->restart_fw > 0) {
1273 ieee80211_restart_hw(mvm->hw);
1278 mutex_unlock(&mvm->mutex);
1283 static int iwl_mvm_enter_d0i3_sync(struct iwl_mvm *mvm)
1285 struct iwl_notification_wait wait_d3;
1286 static const u16 d3_notif[] = { D3_CONFIG_CMD };
1289 iwl_init_notification_wait(&mvm->notif_wait, &wait_d3,
1290 d3_notif, ARRAY_SIZE(d3_notif),
1293 ret = iwl_mvm_enter_d0i3(mvm->hw->priv);
1297 ret = iwl_wait_notification(&mvm->notif_wait, &wait_d3, HZ);
1302 iwl_remove_notification(&mvm->notif_wait, &wait_d3);
1306 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1308 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1309 struct iwl_trans *trans = mvm->trans;
1312 /* make sure the d0i3 exit work is not pending */
1313 flush_work(&mvm->d0i3_exit_work);
1315 ret = iwl_trans_suspend(trans);
1320 trans->system_pm_mode = IWL_PLAT_PM_MODE_D0I3;
1322 if (iwl_mvm_enter_d0i3_on_suspend(mvm)) {
1323 ret = iwl_mvm_enter_d0i3_sync(mvm);
1329 mutex_lock(&mvm->d0i3_suspend_mutex);
1330 __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
1331 mutex_unlock(&mvm->d0i3_suspend_mutex);
1333 iwl_trans_d3_suspend(trans, false, false);
1338 trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
1340 return __iwl_mvm_suspend(hw, wowlan, false);
1343 /* converted data from the different status responses */
1344 struct iwl_wowlan_status_data {
1348 u32 wake_packet_length;
1349 u32 wake_packet_bufsize;
1350 const u8 *wake_packet;
1353 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1354 struct ieee80211_vif *vif,
1355 struct iwl_wowlan_status_data *status)
1357 struct sk_buff *pkt = NULL;
1358 struct cfg80211_wowlan_wakeup wakeup = {
1361 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1362 u32 reasons = status->wakeup_reasons;
1364 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1365 wakeup_report = NULL;
1369 pm_wakeup_event(mvm->dev, 0);
1371 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1372 wakeup.magic_pkt = true;
1374 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1375 wakeup.pattern_idx =
1376 status->pattern_number;
1378 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1379 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1380 wakeup.disconnect = true;
1382 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1383 wakeup.gtk_rekey_failure = true;
1385 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1386 wakeup.rfkill_release = true;
1388 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1389 wakeup.eap_identity_req = true;
1391 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1392 wakeup.four_way_handshake = true;
1394 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1395 wakeup.tcp_connlost = true;
1397 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1398 wakeup.tcp_nomoretokens = true;
1400 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1401 wakeup.tcp_match = true;
1403 if (status->wake_packet_bufsize) {
1404 int pktsize = status->wake_packet_bufsize;
1405 int pktlen = status->wake_packet_length;
1406 const u8 *pktdata = status->wake_packet;
1407 struct ieee80211_hdr *hdr = (void *)pktdata;
1408 int truncated = pktlen - pktsize;
1410 /* this would be a firmware bug */
1411 if (WARN_ON_ONCE(truncated < 0))
1414 if (ieee80211_is_data(hdr->frame_control)) {
1415 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1416 int ivlen = 0, icvlen = 4; /* also FCS */
1418 pkt = alloc_skb(pktsize, GFP_KERNEL);
1422 memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen);
1426 if (ieee80211_has_protected(hdr->frame_control)) {
1428 * This is unlocked and using gtk_i(c)vlen,
1429 * but since everything is under RTNL still
1430 * that's not really a problem - changing
1431 * it would be difficult.
1433 if (is_multicast_ether_addr(hdr->addr1)) {
1434 ivlen = mvm->gtk_ivlen;
1435 icvlen += mvm->gtk_icvlen;
1437 ivlen = mvm->ptk_ivlen;
1438 icvlen += mvm->ptk_icvlen;
1442 /* if truncated, FCS/ICV is (partially) gone */
1443 if (truncated >= icvlen) {
1445 truncated -= icvlen;
1447 icvlen -= truncated;
1451 pktsize -= ivlen + icvlen;
1454 memcpy(skb_put(pkt, pktsize), pktdata, pktsize);
1456 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1458 wakeup.packet = pkt->data;
1459 wakeup.packet_present_len = pkt->len;
1460 wakeup.packet_len = pkt->len - truncated;
1461 wakeup.packet_80211 = false;
1465 if (truncated >= 4) {
1469 fcslen -= truncated;
1473 wakeup.packet = status->wake_packet;
1474 wakeup.packet_present_len = pktsize;
1475 wakeup.packet_len = pktlen - truncated;
1476 wakeup.packet_80211 = true;
1481 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1485 static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
1486 struct ieee80211_key_seq *seq)
1490 pn = le64_to_cpu(sc->pn);
1491 seq->ccmp.pn[0] = pn >> 40;
1492 seq->ccmp.pn[1] = pn >> 32;
1493 seq->ccmp.pn[2] = pn >> 24;
1494 seq->ccmp.pn[3] = pn >> 16;
1495 seq->ccmp.pn[4] = pn >> 8;
1496 seq->ccmp.pn[5] = pn;
1499 static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
1500 struct ieee80211_key_seq *seq)
1502 seq->tkip.iv32 = le32_to_cpu(sc->iv32);
1503 seq->tkip.iv16 = le16_to_cpu(sc->iv16);
1506 static void iwl_mvm_set_aes_rx_seq(struct iwl_mvm *mvm, struct aes_sc *scs,
1507 struct ieee80211_sta *sta,
1508 struct ieee80211_key_conf *key)
1512 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1514 if (sta && iwl_mvm_has_new_rx_api(mvm)) {
1515 struct iwl_mvm_sta *mvmsta;
1516 struct iwl_mvm_key_pn *ptk_pn;
1518 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1520 ptk_pn = rcu_dereference_protected(mvmsta->ptk_pn[key->keyidx],
1521 lockdep_is_held(&mvm->mutex));
1522 if (WARN_ON(!ptk_pn))
1525 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1526 struct ieee80211_key_seq seq = {};
1529 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1530 ieee80211_set_key_rx_seq(key, tid, &seq);
1531 for (i = 1; i < mvm->trans->num_rx_queues; i++)
1532 memcpy(ptk_pn->q[i].pn[tid],
1533 seq.ccmp.pn, IEEE80211_CCMP_PN_LEN);
1536 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1537 struct ieee80211_key_seq seq = {};
1539 iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
1540 ieee80211_set_key_rx_seq(key, tid, &seq);
1545 static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
1546 struct ieee80211_key_conf *key)
1550 BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
1552 for (tid = 0; tid < IWL_NUM_RSC; tid++) {
1553 struct ieee80211_key_seq seq = {};
1555 iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
1556 ieee80211_set_key_rx_seq(key, tid, &seq);
1560 static void iwl_mvm_set_key_rx_seq(struct iwl_mvm *mvm,
1561 struct ieee80211_key_conf *key,
1562 struct iwl_wowlan_status *status)
1564 union iwl_all_tsc_rsc *rsc = &status->gtk.rsc.all_tsc_rsc;
1566 switch (key->cipher) {
1567 case WLAN_CIPHER_SUITE_CCMP:
1568 iwl_mvm_set_aes_rx_seq(mvm, rsc->aes.multicast_rsc, NULL, key);
1570 case WLAN_CIPHER_SUITE_TKIP:
1571 iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
1578 struct iwl_mvm_d3_gtk_iter_data {
1579 struct iwl_mvm *mvm;
1580 struct iwl_wowlan_status *status;
1583 bool find_phase, unhandled_cipher;
1587 static void iwl_mvm_d3_update_keys(struct ieee80211_hw *hw,
1588 struct ieee80211_vif *vif,
1589 struct ieee80211_sta *sta,
1590 struct ieee80211_key_conf *key,
1593 struct iwl_mvm_d3_gtk_iter_data *data = _data;
1595 if (data->unhandled_cipher)
1598 switch (key->cipher) {
1599 case WLAN_CIPHER_SUITE_WEP40:
1600 case WLAN_CIPHER_SUITE_WEP104:
1601 /* ignore WEP completely, nothing to do */
1603 case WLAN_CIPHER_SUITE_CCMP:
1604 case WLAN_CIPHER_SUITE_TKIP:
1605 /* we support these */
1608 /* everything else (even CMAC for MFP) - disconnect from AP */
1609 data->unhandled_cipher = true;
1616 * pairwise key - update sequence counters only;
1617 * note that this assumes no TDLS sessions are active
1620 struct ieee80211_key_seq seq = {};
1621 union iwl_all_tsc_rsc *sc = &data->status->gtk.rsc.all_tsc_rsc;
1623 if (data->find_phase)
1626 switch (key->cipher) {
1627 case WLAN_CIPHER_SUITE_CCMP:
1628 iwl_mvm_set_aes_rx_seq(data->mvm, sc->aes.unicast_rsc,
1630 atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
1632 case WLAN_CIPHER_SUITE_TKIP:
1633 iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
1634 iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
1635 atomic64_set(&key->tx_pn,
1636 (u64)seq.tkip.iv16 |
1637 ((u64)seq.tkip.iv32 << 16));
1641 /* that's it for this key */
1645 if (data->find_phase) {
1646 data->last_gtk = key;
1647 data->cipher = key->cipher;
1651 if (data->status->num_of_gtk_rekeys)
1652 ieee80211_remove_key(key);
1653 else if (data->last_gtk == key)
1654 iwl_mvm_set_key_rx_seq(data->mvm, key, data->status);
1657 static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
1658 struct ieee80211_vif *vif,
1659 struct iwl_wowlan_status *status)
1661 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1662 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1666 u32 disconnection_reasons =
1667 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1668 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
1670 if (!status || !vif->bss_conf.bssid)
1673 if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
1676 /* find last GTK that we used initially, if any */
1677 gtkdata.find_phase = true;
1678 ieee80211_iter_keys(mvm->hw, vif,
1679 iwl_mvm_d3_update_keys, >kdata);
1680 /* not trying to keep connections with MFP/unhandled ciphers */
1681 if (gtkdata.unhandled_cipher)
1683 if (!gtkdata.num_keys)
1685 if (!gtkdata.last_gtk)
1689 * invalidate all other GTKs that might still exist and update
1690 * the one that we used
1692 gtkdata.find_phase = false;
1693 ieee80211_iter_keys(mvm->hw, vif,
1694 iwl_mvm_d3_update_keys, >kdata);
1696 if (status->num_of_gtk_rekeys) {
1697 struct ieee80211_key_conf *key;
1699 struct ieee80211_key_conf conf;
1702 .conf.cipher = gtkdata.cipher,
1703 .conf.keyidx = status->gtk.key_index,
1706 switch (gtkdata.cipher) {
1707 case WLAN_CIPHER_SUITE_CCMP:
1708 conf.conf.keylen = WLAN_KEY_LEN_CCMP;
1709 memcpy(conf.conf.key, status->gtk.decrypt_key,
1712 case WLAN_CIPHER_SUITE_TKIP:
1713 conf.conf.keylen = WLAN_KEY_LEN_TKIP;
1714 memcpy(conf.conf.key, status->gtk.decrypt_key, 16);
1715 /* leave TX MIC key zeroed, we don't use it anyway */
1716 memcpy(conf.conf.key +
1717 NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
1718 status->gtk.tkip_mic_key, 8);
1722 key = ieee80211_gtk_rekey_add(vif, &conf.conf);
1725 iwl_mvm_set_key_rx_seq(mvm, key, status);
1728 if (status->num_of_gtk_rekeys) {
1730 cpu_to_be64(le64_to_cpu(status->replay_ctr));
1731 ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
1732 (void *)&replay_ctr, GFP_KERNEL);
1736 mvmvif->seqno_valid = true;
1737 /* +0x10 because the set API expects next-to-use, not last-used */
1738 mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
1743 static struct iwl_wowlan_status *
1744 iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1746 u32 base = mvm->error_event_table;
1747 struct error_table_start {
1748 /* cf. struct iwl_error_event_table */
1752 struct iwl_host_cmd cmd = {
1753 .id = WOWLAN_GET_STATUSES,
1754 .flags = CMD_WANT_SKB,
1756 struct iwl_wowlan_status *status, *fw_status;
1757 int ret, len, status_size;
1759 iwl_trans_read_mem_bytes(mvm->trans, base,
1760 &err_info, sizeof(err_info));
1762 if (err_info.valid) {
1763 IWL_INFO(mvm, "error table is valid (%d) with error (%d)\n",
1764 err_info.valid, err_info.error_id);
1765 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
1766 struct cfg80211_wowlan_wakeup wakeup = {
1767 .rfkill_release = true,
1769 ieee80211_report_wowlan_wakeup(vif, &wakeup,
1772 return ERR_PTR(-EIO);
1775 /* only for tracing for now */
1776 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL);
1778 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1780 ret = iwl_mvm_send_cmd(mvm, &cmd);
1782 IWL_ERR(mvm, "failed to query status (%d)\n", ret);
1783 return ERR_PTR(ret);
1786 /* RF-kill already asserted again... */
1787 if (!cmd.resp_pkt) {
1788 fw_status = ERR_PTR(-ERFKILL);
1792 status_size = sizeof(*fw_status);
1794 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1795 if (len < status_size) {
1796 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1797 fw_status = ERR_PTR(-EIO);
1801 status = (void *)cmd.resp_pkt->data;
1802 if (len != (status_size +
1803 ALIGN(le32_to_cpu(status->wake_packet_bufsize), 4))) {
1804 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1805 fw_status = ERR_PTR(-EIO);
1809 fw_status = kmemdup(status, len, GFP_KERNEL);
1812 iwl_free_resp(&cmd);
1816 /* releases the MVM mutex */
1817 static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1818 struct ieee80211_vif *vif)
1820 struct iwl_wowlan_status_data status;
1821 struct iwl_wowlan_status *fw_status;
1824 struct iwl_mvm_sta *mvm_ap_sta;
1826 fw_status = iwl_mvm_get_wakeup_status(mvm, vif);
1827 if (IS_ERR_OR_NULL(fw_status))
1830 status.pattern_number = le16_to_cpu(fw_status->pattern_number);
1831 for (i = 0; i < 8; i++)
1832 status.qos_seq_ctr[i] =
1833 le16_to_cpu(fw_status->qos_seq_ctr[i]);
1834 status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
1835 status.wake_packet_length =
1836 le32_to_cpu(fw_status->wake_packet_length);
1837 status.wake_packet_bufsize =
1838 le32_to_cpu(fw_status->wake_packet_bufsize);
1839 status.wake_packet = fw_status->wake_packet;
1841 /* still at hard-coded place 0 for D3 image */
1842 mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0);
1846 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
1847 u16 seq = status.qos_seq_ctr[i];
1848 /* firmware stores last-used value, we store next value */
1850 mvm_ap_sta->tid_data[i].seq_number = seq;
1853 /* now we have all the data we need, unlock to avoid mac80211 issues */
1854 mutex_unlock(&mvm->mutex);
1856 iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
1858 keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
1866 mutex_unlock(&mvm->mutex);
1870 void iwl_mvm_d0i3_update_keys(struct iwl_mvm *mvm,
1871 struct ieee80211_vif *vif,
1872 struct iwl_wowlan_status *status)
1874 struct iwl_mvm_d3_gtk_iter_data gtkdata = {
1880 * rekey handling requires taking locks that can't be taken now.
1881 * however, d0i3 doesn't offload rekey, so we're fine.
1883 if (WARN_ON_ONCE(status->num_of_gtk_rekeys))
1886 /* find last GTK that we used initially, if any */
1887 gtkdata.find_phase = true;
1888 iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, >kdata);
1890 gtkdata.find_phase = false;
1891 iwl_mvm_iter_d0i3_ap_keys(mvm, vif, iwl_mvm_d3_update_keys, >kdata);
1894 struct iwl_mvm_nd_query_results {
1895 u32 matched_profiles;
1896 struct iwl_scan_offload_profile_match matches[IWL_SCAN_MAX_PROFILES];
1900 iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
1901 struct iwl_mvm_nd_query_results *results)
1903 struct iwl_scan_offload_profiles_query *query;
1904 struct iwl_host_cmd cmd = {
1905 .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
1906 .flags = CMD_WANT_SKB,
1910 ret = iwl_mvm_send_cmd(mvm, &cmd);
1912 IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
1916 /* RF-kill already asserted again... */
1917 if (!cmd.resp_pkt) {
1922 len = iwl_rx_packet_payload_len(cmd.resp_pkt);
1923 if (len < sizeof(*query)) {
1924 IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
1929 query = (void *)cmd.resp_pkt->data;
1931 results->matched_profiles = le32_to_cpu(query->matched_profiles);
1932 memcpy(results->matches, query->matches, sizeof(results->matches));
1934 #ifdef CONFIG_IWLWIFI_DEBUGFS
1935 mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
1939 iwl_free_resp(&cmd);
1943 static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
1944 struct ieee80211_vif *vif)
1946 struct cfg80211_wowlan_nd_info *net_detect = NULL;
1947 struct cfg80211_wowlan_wakeup wakeup = {
1950 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1951 struct iwl_mvm_nd_query_results query;
1952 struct iwl_wowlan_status *fw_status;
1953 unsigned long matched_profiles;
1955 int i, j, n_matches, ret;
1957 fw_status = iwl_mvm_get_wakeup_status(mvm, vif);
1958 if (!IS_ERR_OR_NULL(fw_status)) {
1959 reasons = le32_to_cpu(fw_status->wakeup_reasons);
1963 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1964 wakeup.rfkill_release = true;
1966 if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
1969 ret = iwl_mvm_netdetect_query_results(mvm, &query);
1970 if (ret || !query.matched_profiles) {
1971 wakeup_report = NULL;
1975 matched_profiles = query.matched_profiles;
1976 if (mvm->n_nd_match_sets) {
1977 n_matches = hweight_long(matched_profiles);
1979 IWL_ERR(mvm, "no net detect match information available\n");
1983 net_detect = kzalloc(sizeof(*net_detect) +
1984 (n_matches * sizeof(net_detect->matches[0])),
1986 if (!net_detect || !n_matches)
1989 for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
1990 struct iwl_scan_offload_profile_match *fw_match;
1991 struct cfg80211_wowlan_nd_match *match;
1992 int idx, n_channels = 0;
1994 fw_match = &query.matches[i];
1996 for (j = 0; j < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; j++)
1997 n_channels += hweight8(fw_match->matching_channels[j]);
1999 match = kzalloc(sizeof(*match) +
2000 (n_channels * sizeof(*match->channels)),
2005 net_detect->matches[net_detect->n_matches++] = match;
2007 /* We inverted the order of the SSIDs in the scan
2008 * request, so invert the index here.
2010 idx = mvm->n_nd_match_sets - i - 1;
2011 match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
2012 memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
2013 match->ssid.ssid_len);
2015 if (mvm->n_nd_channels < n_channels)
2018 for (j = 0; j < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; j++)
2019 if (fw_match->matching_channels[j / 8] & (BIT(j % 8)))
2020 match->channels[match->n_channels++] =
2021 mvm->nd_channels[j]->center_freq;
2025 wakeup.net_detect = net_detect;
2027 iwl_mvm_free_nd(mvm);
2029 mutex_unlock(&mvm->mutex);
2030 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
2033 for (i = 0; i < net_detect->n_matches; i++)
2034 kfree(net_detect->matches[i]);
2039 static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm)
2041 #ifdef CONFIG_IWLWIFI_DEBUGFS
2042 const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN];
2043 u32 len = img->sec[IWL_UCODE_SECTION_DATA].len;
2044 u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset;
2046 if (!mvm->store_d3_resume_sram)
2049 if (!mvm->d3_resume_sram) {
2050 mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL);
2051 if (!mvm->d3_resume_sram)
2055 iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len);
2059 static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
2060 struct ieee80211_vif *vif)
2062 /* skip the one we keep connection on */
2066 if (vif->type == NL80211_IFTYPE_STATION)
2067 ieee80211_resume_disconnect(vif);
2070 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
2072 struct ieee80211_vif *vif = NULL;
2074 enum iwl_d3_status d3_status;
2076 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2077 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2079 u32 flags = CMD_ASYNC | CMD_HIGH_PRIO | CMD_SEND_IN_IDLE |
2082 mutex_lock(&mvm->mutex);
2084 /* get the BSS vif pointer again */
2085 vif = iwl_mvm_get_bss_vif(mvm);
2086 if (IS_ERR_OR_NULL(vif))
2089 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !unified_image);
2093 if (d3_status != IWL_D3_STATUS_ALIVE) {
2094 IWL_INFO(mvm, "Device was reset during suspend\n");
2098 /* query SRAM first in case we want event logging */
2099 iwl_mvm_read_d3_sram(mvm);
2102 * Query the current location and source from the D3 firmware so we
2103 * can play it back when we re-intiailize the D0 firmware
2105 iwl_mvm_update_changed_regdom(mvm);
2107 if (mvm->net_detect) {
2108 /* If this is a non-unified image, we restart the FW,
2109 * so no need to stop the netdetect scan. If that
2110 * fails, continue and try to get the wake-up reasons,
2111 * but trigger a HW restart by keeping a failure code
2115 ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT,
2118 iwl_mvm_query_netdetect_reasons(mvm, vif);
2119 /* has unlocked the mutex, so skip that */
2122 keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
2123 #ifdef CONFIG_IWLWIFI_DEBUGFS
2125 mvm->keep_vif = vif;
2127 /* has unlocked the mutex, so skip that */
2132 iwl_mvm_free_nd(mvm);
2133 mutex_unlock(&mvm->mutex);
2137 ieee80211_iterate_active_interfaces_rtnl(mvm->hw,
2138 IEEE80211_IFACE_ITER_NORMAL,
2139 iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
2142 if (unified_image && !ret) {
2143 ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, flags, 0, NULL);
2144 if (!ret) /* D3 ended successfully - no need to reset device */
2149 * Reconfigure the device in one of the following cases:
2150 * 1. We are not using a unified image
2151 * 2. We are using a unified image but had an error while exiting D3
2153 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
2154 set_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status);
2156 * When switching images we return 1, which causes mac80211
2157 * to do a reconfig with IEEE80211_RECONFIG_TYPE_RESTART.
2158 * This type of reconfig calls iwl_mvm_restart_complete(),
2159 * where we unref the IWL_MVM_REF_UCODE_DOWN, so we need
2160 * to take the reference here.
2162 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
2167 static int iwl_mvm_resume_d3(struct iwl_mvm *mvm)
2169 iwl_trans_resume(mvm->trans);
2171 return __iwl_mvm_resume(mvm, false);
2174 static int iwl_mvm_resume_d0i3(struct iwl_mvm *mvm)
2177 enum iwl_d3_status d3_status;
2178 struct iwl_trans *trans = mvm->trans;
2180 iwl_trans_d3_resume(trans, &d3_status, false, false);
2183 * make sure to clear D0I3_DEFER_WAKEUP before
2184 * calling iwl_trans_resume(), which might wait
2185 * for d0i3 exit completion.
2187 mutex_lock(&mvm->d0i3_suspend_mutex);
2188 __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
2189 exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
2190 &mvm->d0i3_suspend_flags);
2191 mutex_unlock(&mvm->d0i3_suspend_mutex);
2193 IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
2194 _iwl_mvm_exit_d0i3(mvm);
2197 iwl_trans_resume(trans);
2199 if (iwl_mvm_enter_d0i3_on_suspend(mvm)) {
2200 int ret = iwl_mvm_exit_d0i3(mvm->hw->priv);
2205 * d0i3 exit will be deferred until reconfig_complete.
2206 * make sure there we are out of d0i3.
2212 int iwl_mvm_resume(struct ieee80211_hw *hw)
2214 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2217 if (mvm->trans->system_pm_mode == IWL_PLAT_PM_MODE_D0I3)
2218 ret = iwl_mvm_resume_d0i3(mvm);
2220 ret = iwl_mvm_resume_d3(mvm);
2222 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2227 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
2229 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2231 device_set_wakeup_enable(mvm->trans->dev, enabled);
2234 #ifdef CONFIG_IWLWIFI_DEBUGFS
2235 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
2237 struct iwl_mvm *mvm = inode->i_private;
2240 if (mvm->d3_test_active)
2243 file->private_data = inode->i_private;
2245 ieee80211_stop_queues(mvm->hw);
2248 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3;
2250 /* start pseudo D3 */
2252 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
2257 ieee80211_wake_queues(mvm->hw);
2260 mvm->d3_test_active = true;
2261 mvm->keep_vif = NULL;
2265 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
2266 size_t count, loff_t *ppos)
2268 struct iwl_mvm *mvm = file->private_data;
2272 /* read pme_ptr if available */
2273 if (mvm->d3_test_pme_ptr) {
2274 pme_asserted = iwl_trans_read_mem32(mvm->trans,
2275 mvm->d3_test_pme_ptr);
2280 if (msleep_interruptible(100))
2287 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
2288 struct ieee80211_vif *vif)
2290 /* skip the one we keep connection on */
2294 if (vif->type == NL80211_IFTYPE_STATION)
2295 ieee80211_connection_loss(vif);
2298 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
2300 struct iwl_mvm *mvm = inode->i_private;
2301 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2302 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2304 mvm->d3_test_active = false;
2307 __iwl_mvm_resume(mvm, true);
2310 mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED;
2312 iwl_abort_notification_waits(&mvm->notif_wait);
2313 if (!unified_image) {
2314 int remaining_time = 10;
2316 ieee80211_restart_hw(mvm->hw);
2318 /* wait for restart and disconnect all interfaces */
2319 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
2320 remaining_time > 0) {
2325 if (remaining_time == 0)
2326 IWL_ERR(mvm, "Timed out waiting for HW restart!\n");
2329 ieee80211_iterate_active_interfaces_atomic(
2330 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
2331 iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
2333 ieee80211_wake_queues(mvm->hw);
2338 const struct file_operations iwl_dbgfs_d3_test_ops = {
2339 .llseek = no_llseek,
2340 .open = iwl_mvm_d3_test_open,
2341 .read = iwl_mvm_d3_test_read,
2342 .release = iwl_mvm_d3_test_release,