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 - 2013 Intel Corporation. All rights reserved.
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.
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.
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,
24 * The full GNU General Public License is included in this distribution
25 * in the file called COPYING.
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
33 * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved.
34 * All rights reserved.
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
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
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.
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.
62 *****************************************************************************/
64 #include <linux/etherdevice.h>
67 #include <net/cfg80211.h>
70 #include <net/addrconf.h>
71 #include "iwl-modparams.h"
75 void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
76 struct ieee80211_vif *vif,
77 struct cfg80211_gtk_rekey_data *data)
79 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
80 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
82 if (iwlwifi_mod_params.sw_crypto)
85 mutex_lock(&mvm->mutex);
87 memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN);
88 memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN);
89 mvmvif->rekey_data.replay_ctr =
90 cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
91 mvmvif->rekey_data.valid = true;
93 mutex_unlock(&mvm->mutex);
96 #if IS_ENABLED(CONFIG_IPV6)
97 void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
98 struct ieee80211_vif *vif,
99 struct inet6_dev *idev)
101 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
102 struct inet6_ifaddr *ifa;
105 read_lock_bh(&idev->lock);
106 list_for_each_entry(ifa, &idev->addr_list, if_list) {
107 mvmvif->target_ipv6_addrs[idx] = ifa->addr;
109 if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
112 read_unlock_bh(&idev->lock);
114 mvmvif->num_target_ipv6_addrs = idx;
118 void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
119 struct ieee80211_vif *vif, int idx)
121 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
123 mvmvif->tx_key_idx = idx;
126 static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
130 for (i = 0; i < IWL_P1K_SIZE; i++)
131 out[i] = cpu_to_le16(p1k[i]);
134 struct wowlan_key_data {
135 struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
136 struct iwl_wowlan_tkip_params_cmd *tkip;
137 bool error, use_rsc_tsc, use_tkip;
141 static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
142 struct ieee80211_vif *vif,
143 struct ieee80211_sta *sta,
144 struct ieee80211_key_conf *key,
147 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
148 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
149 struct wowlan_key_data *data = _data;
150 struct aes_sc *aes_sc, *aes_tx_sc = NULL;
151 struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
152 struct iwl_p1k_cache *rx_p1ks;
154 struct ieee80211_key_seq seq;
156 u16 p1k[IWL_P1K_SIZE];
159 mutex_lock(&mvm->mutex);
161 switch (key->cipher) {
162 case WLAN_CIPHER_SUITE_WEP40:
163 case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
165 struct iwl_mvm_wep_key_cmd wep_key_cmd;
166 struct iwl_mvm_wep_key wep_key;
168 .wep_key_cmd.mac_id_n_color =
169 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
171 .wep_key_cmd.num_keys = 1,
172 /* firmware sets STA_KEY_FLG_WEP_13BYTES */
173 .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
174 .wep_key.key_index = key->keyidx,
175 .wep_key.key_size = key->keylen,
179 * This will fail -- the key functions don't set support
180 * pairwise WEP keys. However, that's better than silently
181 * failing WoWLAN. Or maybe not?
183 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
186 memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
187 if (key->keyidx == mvmvif->tx_key_idx) {
188 /* TX key must be at offset 0 */
189 wkc.wep_key.key_offset = 0;
191 /* others start at 1 */
193 wkc.wep_key.key_offset = data->wep_key_idx;
196 ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, CMD_SYNC,
198 data->error = ret != 0;
200 mvm->ptk_ivlen = key->iv_len;
201 mvm->ptk_icvlen = key->icv_len;
202 mvm->gtk_ivlen = key->iv_len;
203 mvm->gtk_icvlen = key->icv_len;
205 /* don't upload key again */
211 case WLAN_CIPHER_SUITE_AES_CMAC:
213 * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
214 * but we also shouldn't abort suspend due to that. It does have
215 * support for the IGTK key renewal, but doesn't really use the
216 * IGTK for anything. This means we could spuriously wake up or
217 * be deauthenticated, but that was considered acceptable.
220 case WLAN_CIPHER_SUITE_TKIP:
222 tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
223 tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
225 rx_p1ks = data->tkip->rx_uni;
227 ieee80211_get_key_tx_seq(key, &seq);
228 tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
229 tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
231 ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
232 iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k);
234 memcpy(data->tkip->mic_keys.tx,
235 &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
238 rx_mic_key = data->tkip->mic_keys.rx_unicast;
241 data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
242 rx_p1ks = data->tkip->rx_multi;
243 rx_mic_key = data->tkip->mic_keys.rx_mcast;
247 * For non-QoS this relies on the fact that both the uCode and
248 * mac80211 use TID 0 (as they need to to avoid replay attacks)
249 * for checking the IV in the frames.
251 for (i = 0; i < IWL_NUM_RSC; i++) {
252 ieee80211_get_key_rx_seq(key, i, &seq);
253 tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
254 tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
255 /* wrapping isn't allowed, AP must rekey */
256 if (seq.tkip.iv32 > cur_rx_iv32)
257 cur_rx_iv32 = seq.tkip.iv32;
260 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
262 iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
263 ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
264 cur_rx_iv32 + 1, p1k);
265 iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
268 &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
271 data->use_tkip = true;
272 data->use_rsc_tsc = true;
274 case WLAN_CIPHER_SUITE_CCMP:
276 u8 *pn = seq.ccmp.pn;
278 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
279 aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
281 ieee80211_get_key_tx_seq(key, &seq);
282 aes_tx_sc->pn = cpu_to_le64((u64)pn[5] |
289 aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
293 * For non-QoS this relies on the fact that both the uCode and
294 * mac80211 use TID 0 for checking the IV in the frames.
296 for (i = 0; i < IWL_NUM_RSC; i++) {
297 u8 *pn = seq.ccmp.pn;
299 ieee80211_get_key_rx_seq(key, i, &seq);
300 aes_sc->pn = cpu_to_le64((u64)pn[5] |
307 data->use_rsc_tsc = true;
312 * The D3 firmware hardcodes the key offset 0 as the key it uses
313 * to transmit packets to the AP, i.e. the PTK.
315 if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
317 mvm->ptk_ivlen = key->iv_len;
318 mvm->ptk_icvlen = key->icv_len;
321 * firmware only supports TSC/RSC for a single key,
322 * so if there are multiple keep overwriting them
323 * with new ones -- this relies on mac80211 doing
327 mvm->gtk_ivlen = key->iv_len;
328 mvm->gtk_icvlen = key->icv_len;
331 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, true);
332 data->error = ret != 0;
334 mutex_unlock(&mvm->mutex);
337 static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
338 struct cfg80211_wowlan *wowlan)
340 struct iwl_wowlan_patterns_cmd *pattern_cmd;
341 struct iwl_host_cmd cmd = {
342 .id = WOWLAN_PATTERNS,
343 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
348 if (!wowlan->n_patterns)
351 cmd.len[0] = sizeof(*pattern_cmd) +
352 wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern);
354 pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
358 pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
360 for (i = 0; i < wowlan->n_patterns; i++) {
361 int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
363 memcpy(&pattern_cmd->patterns[i].mask,
364 wowlan->patterns[i].mask, mask_len);
365 memcpy(&pattern_cmd->patterns[i].pattern,
366 wowlan->patterns[i].pattern,
367 wowlan->patterns[i].pattern_len);
368 pattern_cmd->patterns[i].mask_size = mask_len;
369 pattern_cmd->patterns[i].pattern_size =
370 wowlan->patterns[i].pattern_len;
373 cmd.data[0] = pattern_cmd;
374 err = iwl_mvm_send_cmd(mvm, &cmd);
379 static int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm,
380 struct ieee80211_vif *vif)
383 struct iwl_proto_offload_cmd_v1 v1;
384 struct iwl_proto_offload_cmd_v2 v2;
385 struct iwl_proto_offload_cmd_v3_small v3s;
386 struct iwl_proto_offload_cmd_v3_large v3l;
388 struct iwl_host_cmd hcmd = {
389 .id = PROT_OFFLOAD_CONFIG_CMD,
392 .dataflags[0] = IWL_HCMD_DFL_DUP,
394 struct iwl_proto_offload_cmd_common *common;
395 u32 enabled = 0, size;
396 u32 capa_flags = mvm->fw->ucode_capa.flags;
397 #if IS_ENABLED(CONFIG_IPV6)
398 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
401 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL ||
402 capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
403 struct iwl_ns_config *nsc;
404 struct iwl_targ_addr *addrs;
408 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
409 nsc = cmd.v3s.ns_config;
410 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3S;
411 addrs = cmd.v3s.targ_addrs;
412 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3S;
414 nsc = cmd.v3l.ns_config;
415 n_nsc = IWL_PROTO_OFFLOAD_NUM_NS_CONFIG_V3L;
416 addrs = cmd.v3l.targ_addrs;
417 n_addrs = IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V3L;
420 if (mvmvif->num_target_ipv6_addrs)
421 enabled |= IWL_D3_PROTO_OFFLOAD_NS;
424 * For each address we have (and that will fit) fill a target
425 * address struct and combine for NS offload structs with the
426 * solicited node addresses.
429 i < mvmvif->num_target_ipv6_addrs &&
430 i < n_addrs && c < n_nsc; i++) {
431 struct in6_addr solicited_addr;
434 addrconf_addr_solict_mult(&mvmvif->target_ipv6_addrs[i],
436 for (j = 0; j < c; j++)
437 if (ipv6_addr_cmp(&nsc[j].dest_ipv6_addr,
438 &solicited_addr) == 0)
442 addrs[i].addr = mvmvif->target_ipv6_addrs[i];
443 addrs[i].config_num = cpu_to_le32(j);
444 nsc[j].dest_ipv6_addr = solicited_addr;
445 memcpy(nsc[j].target_mac_addr, vif->addr, ETH_ALEN);
448 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL)
449 cmd.v3s.num_valid_ipv6_addrs = cpu_to_le32(i);
451 cmd.v3l.num_valid_ipv6_addrs = cpu_to_le32(i);
452 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
453 if (mvmvif->num_target_ipv6_addrs) {
454 enabled |= IWL_D3_PROTO_OFFLOAD_NS;
455 memcpy(cmd.v2.ndp_mac_addr, vif->addr, ETH_ALEN);
458 BUILD_BUG_ON(sizeof(cmd.v2.target_ipv6_addr[0]) !=
459 sizeof(mvmvif->target_ipv6_addrs[0]));
461 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
462 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V2); i++)
463 memcpy(cmd.v2.target_ipv6_addr[i],
464 &mvmvif->target_ipv6_addrs[i],
465 sizeof(cmd.v2.target_ipv6_addr[i]));
467 if (mvmvif->num_target_ipv6_addrs) {
468 enabled |= IWL_D3_PROTO_OFFLOAD_NS;
469 memcpy(cmd.v1.ndp_mac_addr, vif->addr, ETH_ALEN);
472 BUILD_BUG_ON(sizeof(cmd.v1.target_ipv6_addr[0]) !=
473 sizeof(mvmvif->target_ipv6_addrs[0]));
475 for (i = 0; i < min(mvmvif->num_target_ipv6_addrs,
476 IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_V1); i++)
477 memcpy(cmd.v1.target_ipv6_addr[i],
478 &mvmvif->target_ipv6_addrs[i],
479 sizeof(cmd.v1.target_ipv6_addr[i]));
483 if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_SMALL) {
484 common = &cmd.v3s.common;
485 size = sizeof(cmd.v3s);
486 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_NEW_NSOFFL_LARGE) {
487 common = &cmd.v3l.common;
488 size = sizeof(cmd.v3l);
489 } else if (capa_flags & IWL_UCODE_TLV_FLAGS_D3_6_IPV6_ADDRS) {
490 common = &cmd.v2.common;
491 size = sizeof(cmd.v2);
493 common = &cmd.v1.common;
494 size = sizeof(cmd.v1);
497 if (vif->bss_conf.arp_addr_cnt) {
498 enabled |= IWL_D3_PROTO_OFFLOAD_ARP;
499 common->host_ipv4_addr = vif->bss_conf.arp_addr_list[0];
500 memcpy(common->arp_mac_addr, vif->addr, ETH_ALEN);
506 common->enabled = cpu_to_le32(enabled);
509 return iwl_mvm_send_cmd(mvm, &hcmd);
512 enum iwl_mvm_tcp_packet_type {
521 static __le16 pseudo_hdr_check(int len, __be32 saddr, __be32 daddr)
523 __sum16 check = tcp_v4_check(len, saddr, daddr, 0);
524 return cpu_to_le16(be16_to_cpu((__force __be16)check));
527 static void iwl_mvm_build_tcp_packet(struct ieee80211_vif *vif,
528 struct cfg80211_wowlan_tcp *tcp,
529 void *_pkt, u8 *mask,
530 __le16 *pseudo_hdr_csum,
531 enum iwl_mvm_tcp_packet_type ptype)
538 } __packed *pkt = _pkt;
539 u16 ip_tot_len = sizeof(struct iphdr) + sizeof(struct tcphdr);
542 pkt->eth.h_proto = cpu_to_be16(ETH_P_IP),
545 pkt->ip.protocol = IPPROTO_TCP;
549 case MVM_TCP_TX_DATA:
551 memcpy(pkt->eth.h_dest, tcp->dst_mac, ETH_ALEN);
552 memcpy(pkt->eth.h_source, vif->addr, ETH_ALEN);
554 pkt->ip.saddr = tcp->src;
555 pkt->ip.daddr = tcp->dst;
556 pkt->tcp.source = cpu_to_be16(tcp->src_port);
557 pkt->tcp.dest = cpu_to_be16(tcp->dst_port);
558 /* overwritten for TX SYN later */
559 pkt->tcp.doff = sizeof(struct tcphdr) / 4;
560 pkt->tcp.window = cpu_to_be16(65000);
562 case MVM_TCP_RX_SYNACK:
564 case MVM_TCP_RX_WAKE:
565 memcpy(pkt->eth.h_dest, vif->addr, ETH_ALEN);
566 memcpy(pkt->eth.h_source, tcp->dst_mac, ETH_ALEN);
567 pkt->ip.saddr = tcp->dst;
568 pkt->ip.daddr = tcp->src;
569 pkt->tcp.source = cpu_to_be16(tcp->dst_port);
570 pkt->tcp.dest = cpu_to_be16(tcp->src_port);
579 /* firmware assumes 8 option bytes - 8 NOPs for now */
580 memset(pkt->data, 0x01, 8);
582 pkt->tcp.doff = (sizeof(struct tcphdr) + 8) / 4;
585 case MVM_TCP_TX_DATA:
586 ip_tot_len += tcp->payload_len;
587 memcpy(pkt->data, tcp->payload, tcp->payload_len);
595 case MVM_TCP_RX_SYNACK:
602 case MVM_TCP_RX_WAKE:
603 ip_tot_len += tcp->wake_len;
606 memcpy(pkt->data, tcp->wake_data, tcp->wake_len);
612 case MVM_TCP_TX_DATA:
614 pkt->ip.tot_len = cpu_to_be16(ip_tot_len);
615 pkt->ip.check = ip_fast_csum(&pkt->ip, pkt->ip.ihl);
617 case MVM_TCP_RX_WAKE:
618 for (i = 0; i < DIV_ROUND_UP(tcp->wake_len, 8); i++) {
619 u8 tmp = tcp->wake_mask[i];
620 mask[i + 6] |= tmp << 6;
621 if (i + 1 < DIV_ROUND_UP(tcp->wake_len, 8))
622 mask[i + 7] = tmp >> 2;
624 /* fall through for ethernet/IP/TCP headers mask */
625 case MVM_TCP_RX_SYNACK:
627 mask[0] = 0xff; /* match ethernet */
629 * match ethernet, ip.version, ip.ihl
630 * the ip.ihl half byte is really masked out by firmware
633 mask[2] = 0x80; /* match ip.protocol */
634 mask[3] = 0xfc; /* match ip.saddr, ip.daddr */
635 mask[4] = 0x3f; /* match ip.daddr, tcp.source, tcp.dest */
636 mask[5] = 0x80; /* match tcp flags */
637 /* leave rest (0 or set for MVM_TCP_RX_WAKE) */
641 *pseudo_hdr_csum = pseudo_hdr_check(ip_tot_len - sizeof(struct iphdr),
642 pkt->ip.saddr, pkt->ip.daddr);
645 static int iwl_mvm_send_remote_wake_cfg(struct iwl_mvm *mvm,
646 struct ieee80211_vif *vif,
647 struct cfg80211_wowlan_tcp *tcp)
649 struct iwl_wowlan_remote_wake_config *cfg;
650 struct iwl_host_cmd cmd = {
651 .id = REMOTE_WAKE_CONFIG_CMD,
652 .len = { sizeof(*cfg), },
653 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
661 cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
666 cfg->max_syn_retries = 10;
667 cfg->max_data_retries = 10;
668 cfg->tcp_syn_ack_timeout = 1; /* seconds */
669 cfg->tcp_ack_timeout = 1; /* seconds */
672 iwl_mvm_build_tcp_packet(
673 vif, tcp, cfg->syn_tx.data, NULL,
674 &cfg->syn_tx.info.tcp_pseudo_header_checksum,
676 cfg->syn_tx.info.tcp_payload_length = 0;
679 iwl_mvm_build_tcp_packet(
680 vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask,
681 &cfg->synack_rx.info.tcp_pseudo_header_checksum,
683 cfg->synack_rx.info.tcp_payload_length = 0;
685 /* KEEPALIVE/ACK (TX) */
686 iwl_mvm_build_tcp_packet(
687 vif, tcp, cfg->keepalive_tx.data, NULL,
688 &cfg->keepalive_tx.info.tcp_pseudo_header_checksum,
690 cfg->keepalive_tx.info.tcp_payload_length =
691 cpu_to_le16(tcp->payload_len);
692 cfg->sequence_number_offset = tcp->payload_seq.offset;
693 /* length must be 0..4, the field is little endian */
694 cfg->sequence_number_length = tcp->payload_seq.len;
695 cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start);
696 cfg->keepalive_interval = cpu_to_le16(tcp->data_interval);
697 if (tcp->payload_tok.len) {
698 cfg->token_offset = tcp->payload_tok.offset;
699 cfg->token_length = tcp->payload_tok.len;
701 cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len);
702 memcpy(cfg->tokens, tcp->payload_tok.token_stream,
705 /* set tokens to max value to almost never run out */
706 cfg->num_tokens = cpu_to_le16(65535);
710 iwl_mvm_build_tcp_packet(
711 vif, tcp, cfg->keepalive_ack_rx.data,
712 cfg->keepalive_ack_rx.rx_mask,
713 &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum,
715 cfg->keepalive_ack_rx.info.tcp_payload_length = 0;
718 iwl_mvm_build_tcp_packet(
719 vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask,
720 &cfg->wake_rx.info.tcp_pseudo_header_checksum,
722 cfg->wake_rx.info.tcp_payload_length =
723 cpu_to_le16(tcp->wake_len);
726 iwl_mvm_build_tcp_packet(
727 vif, tcp, cfg->fin_tx.data, NULL,
728 &cfg->fin_tx.info.tcp_pseudo_header_checksum,
730 cfg->fin_tx.info.tcp_payload_length = 0;
732 ret = iwl_mvm_send_cmd(mvm, &cmd);
738 struct iwl_d3_iter_data {
740 struct ieee80211_vif *vif;
744 static void iwl_mvm_d3_iface_iterator(void *_data, u8 *mac,
745 struct ieee80211_vif *vif)
747 struct iwl_d3_iter_data *data = _data;
748 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
750 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
753 if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT)
757 IWL_ERR(data->mvm, "More than one managed interface active!\n");
765 static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
766 struct ieee80211_sta *ap_sta)
768 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
769 struct ieee80211_chanctx_conf *ctx;
770 u8 chains_static, chains_dynamic;
771 struct cfg80211_chan_def chandef;
773 struct iwl_binding_cmd binding_cmd = {};
774 struct iwl_time_quota_cmd quota_cmd = {};
777 /* add back the PHY */
778 if (WARN_ON(!mvmvif->phy_ctxt))
782 ctx = rcu_dereference(vif->chanctx_conf);
788 chains_static = ctx->rx_chains_static;
789 chains_dynamic = ctx->rx_chains_dynamic;
792 ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
793 chains_static, chains_dynamic);
797 /* add back the MAC */
798 mvmvif->uploaded = false;
800 if (WARN_ON(!vif->bss_conf.assoc))
803 vif->bss_conf.assoc = false;
804 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
805 vif->bss_conf.assoc = true;
809 /* add back binding - XXX refactor? */
810 binding_cmd.id_and_color =
811 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
812 mvmvif->phy_ctxt->color));
813 binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
815 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
816 mvmvif->phy_ctxt->color));
817 binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
819 for (i = 1; i < MAX_MACS_IN_BINDING; i++)
820 binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
823 ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
824 sizeof(binding_cmd), &binding_cmd,
827 IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
832 IWL_ERR(mvm, "Binding command failed: %u\n", status);
836 ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false);
839 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
841 ret = iwl_mvm_mac_ctxt_changed(mvm, vif);
846 quota_cmd.quotas[0].id_and_color =
847 cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
848 mvmvif->phy_ctxt->color));
849 quota_cmd.quotas[0].quota = cpu_to_le32(100);
850 quota_cmd.quotas[0].max_duration = cpu_to_le32(1000);
852 for (i = 1; i < MAX_BINDINGS; i++)
853 quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID);
855 ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, CMD_SYNC,
856 sizeof(quota_cmd), "a_cmd);
858 IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
863 static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
864 struct ieee80211_vif *vif)
866 struct iwl_host_cmd cmd = {
867 .id = NON_QOS_TX_COUNTER_CMD,
868 .flags = CMD_SYNC | CMD_WANT_SKB,
873 err = iwl_mvm_send_cmd(mvm, &cmd);
877 size = le32_to_cpu(cmd.resp_pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
878 size -= sizeof(cmd.resp_pkt->hdr);
879 if (size != sizeof(__le32))
882 err = le32_to_cpup((__le32 *)cmd.resp_pkt->data);
888 static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
889 struct cfg80211_wowlan *wowlan,
892 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
893 struct iwl_d3_iter_data suspend_iter_data = {
896 struct ieee80211_vif *vif;
897 struct iwl_mvm_vif *mvmvif;
898 struct ieee80211_sta *ap_sta;
899 struct iwl_mvm_sta *mvm_ap_sta;
900 struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
901 struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {};
902 struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
903 struct iwl_d3_manager_config d3_cfg_cmd_data = {
905 * Program the minimum sleep time to 10 seconds, as many
906 * platforms have issues processing a wakeup signal while
907 * still being in the process of suspending.
909 .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
911 struct iwl_host_cmd d3_cfg_cmd = {
913 .flags = CMD_SYNC | CMD_WANT_SKB,
914 .data[0] = &d3_cfg_cmd_data,
915 .len[0] = sizeof(d3_cfg_cmd_data),
917 struct wowlan_key_data key_data = {
918 .use_rsc_tsc = false,
923 int len __maybe_unused;
924 u8 old_aux_sta_id, old_ap_sta_id = IWL_MVM_STATION_COUNT;
928 * mac80211 shouldn't get here, but for D3 test
929 * it doesn't warrant a warning
935 key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
936 if (!key_data.rsc_tsc)
939 mutex_lock(&mvm->mutex);
941 old_aux_sta_id = mvm->aux_sta.sta_id;
943 /* see if there's only a single BSS vif and it's associated */
944 ieee80211_iterate_active_interfaces_atomic(
945 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
946 iwl_mvm_d3_iface_iterator, &suspend_iter_data);
948 if (suspend_iter_data.error || !suspend_iter_data.vif) {
953 vif = suspend_iter_data.vif;
954 mvmvif = iwl_mvm_vif_from_mac80211(vif);
956 ap_sta = rcu_dereference_protected(
957 mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
958 lockdep_is_held(&mvm->mutex));
959 if (IS_ERR_OR_NULL(ap_sta)) {
964 mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv;
966 /* TODO: wowlan_config_cmd.wowlan_ba_teardown_tids */
968 wowlan_config_cmd.is_11n_connection = ap_sta->ht_cap.ht_supported;
970 /* Query the last used seqno and set it */
971 ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
974 wowlan_config_cmd.non_qos_seq = cpu_to_le16(ret);
977 * For QoS counters, we store the one to use next, so subtract 0x10
978 * since the uCode will add 0x10 *before* using the value while we
979 * increment after using the value (i.e. store the next value to use).
981 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
982 u16 seq = mvm_ap_sta->tid_data[i].seq_number;
984 wowlan_config_cmd.qos_seq[i] = cpu_to_le16(seq);
987 if (wowlan->disconnect)
988 wowlan_config_cmd.wakeup_filter |=
989 cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
990 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
991 if (wowlan->magic_pkt)
992 wowlan_config_cmd.wakeup_filter |=
993 cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
994 if (wowlan->gtk_rekey_failure)
995 wowlan_config_cmd.wakeup_filter |=
996 cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
997 if (wowlan->eap_identity_req)
998 wowlan_config_cmd.wakeup_filter |=
999 cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
1000 if (wowlan->four_way_handshake)
1001 wowlan_config_cmd.wakeup_filter |=
1002 cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
1003 if (wowlan->n_patterns)
1004 wowlan_config_cmd.wakeup_filter |=
1005 cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
1007 if (wowlan->rfkill_release)
1008 wowlan_config_cmd.wakeup_filter |=
1009 cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
1013 * Set the "link change" (really "link lost") flag as well
1014 * since that implies losing the TCP connection.
1016 wowlan_config_cmd.wakeup_filter |=
1017 cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
1018 IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
1019 IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
1020 IWL_WOWLAN_WAKEUP_LINK_CHANGE);
1023 iwl_mvm_cancel_scan(mvm);
1025 iwl_trans_stop_device(mvm->trans);
1028 * The D3 firmware still hardcodes the AP station ID for the
1029 * BSS we're associated with as 0. Store the real STA ID here
1030 * and assign 0. When we leave this function, we'll restore
1031 * the original value for the resume code.
1033 old_ap_sta_id = mvm_ap_sta->sta_id;
1034 mvm_ap_sta->sta_id = 0;
1035 mvmvif->ap_sta_id = 0;
1038 * Set the HW restart bit -- this is mostly true as we're
1039 * going to load new firmware and reprogram that, though
1040 * the reprogramming is going to be manual to avoid adding
1041 * all the MACs that aren't support.
1042 * We don't have to clear up everything though because the
1043 * reprogramming is manual. When we resume, we'll actually
1044 * go through a proper restart sequence again to switch
1045 * back to the runtime firmware image.
1047 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1049 /* We reprogram keys and shouldn't allocate new key indices */
1050 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
1053 mvm->ptk_icvlen = 0;
1055 mvm->ptk_icvlen = 0;
1058 * The D3 firmware still hardcodes the AP station ID for the
1059 * BSS we're associated with as 0. As a result, we have to move
1060 * the auxiliary station to ID 1 so the ID 0 remains free for
1061 * the AP station for later.
1062 * We set the sta_id to 1 here, and reset it to its previous
1063 * value (that we stored above) later.
1065 mvm->aux_sta.sta_id = 1;
1067 ret = iwl_mvm_load_d3_fw(mvm);
1071 ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
1075 if (!iwlwifi_mod_params.sw_crypto) {
1077 * This needs to be unlocked due to lock ordering
1078 * constraints. Since we're in the suspend path
1079 * that isn't really a problem though.
1081 mutex_unlock(&mvm->mutex);
1082 ieee80211_iter_keys(mvm->hw, vif,
1083 iwl_mvm_wowlan_program_keys,
1085 mutex_lock(&mvm->mutex);
1086 if (key_data.error) {
1091 if (key_data.use_rsc_tsc) {
1092 struct iwl_host_cmd rsc_tsc_cmd = {
1093 .id = WOWLAN_TSC_RSC_PARAM,
1095 .data[0] = key_data.rsc_tsc,
1096 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1097 .len[0] = sizeof(*key_data.rsc_tsc),
1100 ret = iwl_mvm_send_cmd(mvm, &rsc_tsc_cmd);
1105 if (key_data.use_tkip) {
1106 ret = iwl_mvm_send_cmd_pdu(mvm,
1108 CMD_SYNC, sizeof(tkip_cmd),
1114 if (mvmvif->rekey_data.valid) {
1115 memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
1116 memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
1118 kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
1119 memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
1121 kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
1122 kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
1124 ret = iwl_mvm_send_cmd_pdu(mvm,
1125 WOWLAN_KEK_KCK_MATERIAL,
1127 sizeof(kek_kck_cmd),
1134 ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION,
1135 CMD_SYNC, sizeof(wowlan_config_cmd),
1136 &wowlan_config_cmd);
1140 ret = iwl_mvm_send_patterns(mvm, wowlan);
1144 ret = iwl_mvm_send_proto_offload(mvm, vif);
1148 ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp);
1152 ret = iwl_mvm_power_update_mode(mvm, vif);
1156 #ifdef CONFIG_IWLWIFI_DEBUGFS
1157 if (mvm->d3_wake_sysassert)
1158 d3_cfg_cmd_data.wakeup_flags |=
1159 cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
1162 /* must be last -- this switches firmware state */
1163 ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
1166 #ifdef CONFIG_IWLWIFI_DEBUGFS
1167 len = le32_to_cpu(d3_cfg_cmd.resp_pkt->len_n_flags) &
1168 FH_RSCSR_FRAME_SIZE_MSK;
1169 if (len >= sizeof(u32) * 2) {
1170 mvm->d3_test_pme_ptr =
1171 le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
1173 /* in test mode we require the pointer */
1178 iwl_free_resp(&d3_cfg_cmd);
1180 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1182 iwl_trans_d3_suspend(mvm->trans, test);
1184 mvm->aux_sta.sta_id = old_aux_sta_id;
1185 mvm_ap_sta->sta_id = old_ap_sta_id;
1186 mvmvif->ap_sta_id = old_ap_sta_id;
1188 kfree(key_data.rsc_tsc);
1190 ieee80211_restart_hw(mvm->hw);
1192 mutex_unlock(&mvm->mutex);
1197 int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
1199 return __iwl_mvm_suspend(hw, wowlan, false);
1202 static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
1203 struct ieee80211_vif *vif,
1204 struct iwl_wowlan_status *status)
1206 struct sk_buff *pkt = NULL;
1207 struct cfg80211_wowlan_wakeup wakeup = {
1210 struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
1211 u32 reasons = le32_to_cpu(status->wakeup_reasons);
1213 if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
1214 wakeup_report = NULL;
1218 if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
1219 wakeup.magic_pkt = true;
1221 if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
1222 wakeup.pattern_idx =
1223 le16_to_cpu(status->pattern_number);
1225 if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
1226 IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
1227 wakeup.disconnect = true;
1229 if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
1230 wakeup.gtk_rekey_failure = true;
1232 if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
1233 wakeup.rfkill_release = true;
1235 if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
1236 wakeup.eap_identity_req = true;
1238 if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
1239 wakeup.four_way_handshake = true;
1241 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
1242 wakeup.tcp_connlost = true;
1244 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
1245 wakeup.tcp_nomoretokens = true;
1247 if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
1248 wakeup.tcp_match = true;
1250 if (status->wake_packet_bufsize) {
1251 int pktsize = le32_to_cpu(status->wake_packet_bufsize);
1252 int pktlen = le32_to_cpu(status->wake_packet_length);
1253 const u8 *pktdata = status->wake_packet;
1254 struct ieee80211_hdr *hdr = (void *)pktdata;
1255 int truncated = pktlen - pktsize;
1257 /* this would be a firmware bug */
1258 if (WARN_ON_ONCE(truncated < 0))
1261 if (ieee80211_is_data(hdr->frame_control)) {
1262 int hdrlen = ieee80211_hdrlen(hdr->frame_control);
1263 int ivlen = 0, icvlen = 4; /* also FCS */
1265 pkt = alloc_skb(pktsize, GFP_KERNEL);
1269 memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen);
1273 if (ieee80211_has_protected(hdr->frame_control)) {
1275 * This is unlocked and using gtk_i(c)vlen,
1276 * but since everything is under RTNL still
1277 * that's not really a problem - changing
1278 * it would be difficult.
1280 if (is_multicast_ether_addr(hdr->addr1)) {
1281 ivlen = mvm->gtk_ivlen;
1282 icvlen += mvm->gtk_icvlen;
1284 ivlen = mvm->ptk_ivlen;
1285 icvlen += mvm->ptk_icvlen;
1289 /* if truncated, FCS/ICV is (partially) gone */
1290 if (truncated >= icvlen) {
1292 truncated -= icvlen;
1294 icvlen -= truncated;
1298 pktsize -= ivlen + icvlen;
1301 memcpy(skb_put(pkt, pktsize), pktdata, pktsize);
1303 if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
1305 wakeup.packet = pkt->data;
1306 wakeup.packet_present_len = pkt->len;
1307 wakeup.packet_len = pkt->len - truncated;
1308 wakeup.packet_80211 = false;
1312 if (truncated >= 4) {
1316 fcslen -= truncated;
1320 wakeup.packet = status->wake_packet;
1321 wakeup.packet_present_len = pktsize;
1322 wakeup.packet_len = pktlen - truncated;
1323 wakeup.packet_80211 = true;
1328 ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
1332 /* releases the MVM mutex */
1333 static void iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
1334 struct ieee80211_vif *vif)
1336 u32 base = mvm->error_event_table;
1337 struct error_table_start {
1338 /* cf. struct iwl_error_event_table */
1342 struct iwl_host_cmd cmd = {
1343 .id = WOWLAN_GET_STATUSES,
1344 .flags = CMD_SYNC | CMD_WANT_SKB,
1346 struct iwl_wowlan_status *status;
1349 iwl_trans_read_mem_bytes(mvm->trans, base,
1350 &err_info, sizeof(err_info));
1352 if (err_info.valid) {
1353 IWL_INFO(mvm, "error table is valid (%d)\n",
1355 if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
1356 struct cfg80211_wowlan_wakeup wakeup = {
1357 .rfkill_release = true,
1359 ieee80211_report_wowlan_wakeup(vif, &wakeup,
1365 /* only for tracing for now */
1366 ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, CMD_SYNC, 0, NULL);
1368 IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
1370 ret = iwl_mvm_send_cmd(mvm, &cmd);
1372 IWL_ERR(mvm, "failed to query status (%d)\n", ret);
1376 /* RF-kill already asserted again... */
1380 len = le32_to_cpu(cmd.resp_pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
1381 if (len - sizeof(struct iwl_cmd_header) < sizeof(*status)) {
1382 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1386 status = (void *)cmd.resp_pkt->data;
1388 if (len - sizeof(struct iwl_cmd_header) !=
1390 ALIGN(le32_to_cpu(status->wake_packet_bufsize), 4)) {
1391 IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
1395 /* now we have all the data we need, unlock to avoid mac80211 issues */
1396 mutex_unlock(&mvm->mutex);
1398 iwl_mvm_report_wakeup_reasons(mvm, vif, status);
1399 iwl_free_resp(&cmd);
1403 iwl_free_resp(&cmd);
1405 mutex_unlock(&mvm->mutex);
1408 static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm)
1410 #ifdef CONFIG_IWLWIFI_DEBUGFS
1411 const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN];
1412 u32 len = img->sec[IWL_UCODE_SECTION_DATA].len;
1413 u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset;
1415 if (!mvm->store_d3_resume_sram)
1418 if (!mvm->d3_resume_sram) {
1419 mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL);
1420 if (!mvm->d3_resume_sram)
1424 iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len);
1428 static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
1430 struct iwl_d3_iter_data resume_iter_data = {
1433 struct ieee80211_vif *vif = NULL;
1435 enum iwl_d3_status d3_status;
1437 mutex_lock(&mvm->mutex);
1439 /* get the BSS vif pointer again */
1440 ieee80211_iterate_active_interfaces_atomic(
1441 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1442 iwl_mvm_d3_iface_iterator, &resume_iter_data);
1444 if (WARN_ON(resume_iter_data.error || !resume_iter_data.vif))
1447 vif = resume_iter_data.vif;
1449 ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test);
1453 if (d3_status != IWL_D3_STATUS_ALIVE) {
1454 IWL_INFO(mvm, "Device was reset during suspend\n");
1458 /* query SRAM first in case we want event logging */
1459 iwl_mvm_read_d3_sram(mvm);
1461 iwl_mvm_query_wakeup_reasons(mvm, vif);
1462 /* has unlocked the mutex, so skip that */
1466 mutex_unlock(&mvm->mutex);
1470 ieee80211_resume_disconnect(vif);
1472 /* return 1 to reconfigure the device */
1473 set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
1477 int iwl_mvm_resume(struct ieee80211_hw *hw)
1479 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1481 return __iwl_mvm_resume(mvm, false);
1484 void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
1486 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1488 device_set_wakeup_enable(mvm->trans->dev, enabled);
1491 #ifdef CONFIG_IWLWIFI_DEBUGFS
1492 static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
1494 struct iwl_mvm *mvm = inode->i_private;
1497 if (mvm->d3_test_active)
1500 file->private_data = inode->i_private;
1502 ieee80211_stop_queues(mvm->hw);
1505 /* start pseudo D3 */
1507 err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
1512 ieee80211_wake_queues(mvm->hw);
1515 mvm->d3_test_active = true;
1519 static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
1520 size_t count, loff_t *ppos)
1522 struct iwl_mvm *mvm = file->private_data;
1526 pme_asserted = iwl_trans_read_mem32(mvm->trans,
1527 mvm->d3_test_pme_ptr);
1530 if (msleep_interruptible(100))
1537 static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
1538 struct ieee80211_vif *vif)
1540 if (vif->type == NL80211_IFTYPE_STATION)
1541 ieee80211_connection_loss(vif);
1544 static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
1546 struct iwl_mvm *mvm = inode->i_private;
1547 int remaining_time = 10;
1549 mvm->d3_test_active = false;
1550 __iwl_mvm_resume(mvm, true);
1551 iwl_abort_notification_waits(&mvm->notif_wait);
1552 ieee80211_restart_hw(mvm->hw);
1554 /* wait for restart and disconnect all interfaces */
1555 while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
1556 remaining_time > 0) {
1561 if (remaining_time == 0)
1562 IWL_ERR(mvm, "Timed out waiting for HW restart to finish!\n");
1564 ieee80211_iterate_active_interfaces_atomic(
1565 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1566 iwl_mvm_d3_test_disconn_work_iter, NULL);
1568 ieee80211_wake_queues(mvm->hw);
1573 const struct file_operations iwl_dbgfs_d3_test_ops = {
1574 .llseek = no_llseek,
1575 .open = iwl_mvm_d3_test_open,
1576 .read = iwl_mvm_d3_test_read,
1577 .release = iwl_mvm_d3_test_release,