+++ /dev/null
-/******************************************************************************
- *
- * This file is provided under a dual BSD/GPLv2 license. When using or
- * redistributing this file, you may do so under either license.
- *
- * GPL LICENSE SUMMARY
- *
- * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
- * USA
- *
- * The full GNU General Public License is included in this distribution
- * in the file called COPYING.
- *
- * Contact Information:
- * Intel Linux Wireless <ilw@linux.intel.com>
- * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *
- * BSD LICENSE
- *
- * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
- * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- *****************************************************************************/
-
-#include <linux/etherdevice.h>
-#include <linux/ip.h>
-#include <linux/fs.h>
-#include <net/cfg80211.h>
-#include <net/ipv6.h>
-#include <net/tcp.h>
-#include <net/addrconf.h>
-#include "iwl-modparams.h"
-#include "fw-api.h"
-#include "mvm.h"
-
-void iwl_mvm_set_rekey_data(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct cfg80211_gtk_rekey_data *data)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- if (iwlwifi_mod_params.sw_crypto)
- return;
-
- mutex_lock(&mvm->mutex);
-
- memcpy(mvmvif->rekey_data.kek, data->kek, NL80211_KEK_LEN);
- memcpy(mvmvif->rekey_data.kck, data->kck, NL80211_KCK_LEN);
- mvmvif->rekey_data.replay_ctr =
- cpu_to_le64(be64_to_cpup((__be64 *)&data->replay_ctr));
- mvmvif->rekey_data.valid = true;
-
- mutex_unlock(&mvm->mutex);
-}
-
-#if IS_ENABLED(CONFIG_IPV6)
-void iwl_mvm_ipv6_addr_change(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct inet6_dev *idev)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct inet6_ifaddr *ifa;
- int idx = 0;
-
- read_lock_bh(&idev->lock);
- list_for_each_entry(ifa, &idev->addr_list, if_list) {
- mvmvif->target_ipv6_addrs[idx] = ifa->addr;
- idx++;
- if (idx >= IWL_PROTO_OFFLOAD_NUM_IPV6_ADDRS_MAX)
- break;
- }
- read_unlock_bh(&idev->lock);
-
- mvmvif->num_target_ipv6_addrs = idx;
-}
-#endif
-
-void iwl_mvm_set_default_unicast_key(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, int idx)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- mvmvif->tx_key_idx = idx;
-}
-
-static void iwl_mvm_convert_p1k(u16 *p1k, __le16 *out)
-{
- int i;
-
- for (i = 0; i < IWL_P1K_SIZE; i++)
- out[i] = cpu_to_le16(p1k[i]);
-}
-
-struct wowlan_key_data {
- struct iwl_wowlan_rsc_tsc_params_cmd *rsc_tsc;
- struct iwl_wowlan_tkip_params_cmd *tkip;
- bool error, use_rsc_tsc, use_tkip;
- int wep_key_idx;
-};
-
-static void iwl_mvm_wowlan_program_keys(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta,
- struct ieee80211_key_conf *key,
- void *_data)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct wowlan_key_data *data = _data;
- struct aes_sc *aes_sc, *aes_tx_sc = NULL;
- struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL;
- struct iwl_p1k_cache *rx_p1ks;
- u8 *rx_mic_key;
- struct ieee80211_key_seq seq;
- u32 cur_rx_iv32 = 0;
- u16 p1k[IWL_P1K_SIZE];
- int ret, i;
-
- mutex_lock(&mvm->mutex);
-
- switch (key->cipher) {
- case WLAN_CIPHER_SUITE_WEP40:
- case WLAN_CIPHER_SUITE_WEP104: { /* hack it for now */
- struct {
- struct iwl_mvm_wep_key_cmd wep_key_cmd;
- struct iwl_mvm_wep_key wep_key;
- } __packed wkc = {
- .wep_key_cmd.mac_id_n_color =
- cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
- mvmvif->color)),
- .wep_key_cmd.num_keys = 1,
- /* firmware sets STA_KEY_FLG_WEP_13BYTES */
- .wep_key_cmd.decryption_type = STA_KEY_FLG_WEP,
- .wep_key.key_index = key->keyidx,
- .wep_key.key_size = key->keylen,
- };
-
- /*
- * This will fail -- the key functions don't set support
- * pairwise WEP keys. However, that's better than silently
- * failing WoWLAN. Or maybe not?
- */
- if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
- break;
-
- memcpy(&wkc.wep_key.key[3], key->key, key->keylen);
- if (key->keyidx == mvmvif->tx_key_idx) {
- /* TX key must be at offset 0 */
- wkc.wep_key.key_offset = 0;
- } else {
- /* others start at 1 */
- data->wep_key_idx++;
- wkc.wep_key.key_offset = data->wep_key_idx;
- }
-
- ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, 0, sizeof(wkc), &wkc);
- data->error = ret != 0;
-
- mvm->ptk_ivlen = key->iv_len;
- mvm->ptk_icvlen = key->icv_len;
- mvm->gtk_ivlen = key->iv_len;
- mvm->gtk_icvlen = key->icv_len;
-
- /* don't upload key again */
- goto out_unlock;
- }
- default:
- data->error = true;
- goto out_unlock;
- case WLAN_CIPHER_SUITE_AES_CMAC:
- /*
- * Ignore CMAC keys -- the WoWLAN firmware doesn't support them
- * but we also shouldn't abort suspend due to that. It does have
- * support for the IGTK key renewal, but doesn't really use the
- * IGTK for anything. This means we could spuriously wake up or
- * be deauthenticated, but that was considered acceptable.
- */
- goto out_unlock;
- case WLAN_CIPHER_SUITE_TKIP:
- if (sta) {
- tkip_sc = data->rsc_tsc->all_tsc_rsc.tkip.unicast_rsc;
- tkip_tx_sc = &data->rsc_tsc->all_tsc_rsc.tkip.tsc;
-
- rx_p1ks = data->tkip->rx_uni;
-
- ieee80211_get_key_tx_seq(key, &seq);
- tkip_tx_sc->iv16 = cpu_to_le16(seq.tkip.iv16);
- tkip_tx_sc->iv32 = cpu_to_le32(seq.tkip.iv32);
-
- ieee80211_get_tkip_p1k_iv(key, seq.tkip.iv32, p1k);
- iwl_mvm_convert_p1k(p1k, data->tkip->tx.p1k);
-
- memcpy(data->tkip->mic_keys.tx,
- &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],
- IWL_MIC_KEY_SIZE);
-
- rx_mic_key = data->tkip->mic_keys.rx_unicast;
- } else {
- tkip_sc =
- data->rsc_tsc->all_tsc_rsc.tkip.multicast_rsc;
- rx_p1ks = data->tkip->rx_multi;
- rx_mic_key = data->tkip->mic_keys.rx_mcast;
- }
-
- /*
- * For non-QoS this relies on the fact that both the uCode and
- * mac80211 use TID 0 (as they need to to avoid replay attacks)
- * for checking the IV in the frames.
- */
- for (i = 0; i < IWL_NUM_RSC; i++) {
- ieee80211_get_key_rx_seq(key, i, &seq);
- tkip_sc[i].iv16 = cpu_to_le16(seq.tkip.iv16);
- tkip_sc[i].iv32 = cpu_to_le32(seq.tkip.iv32);
- /* wrapping isn't allowed, AP must rekey */
- if (seq.tkip.iv32 > cur_rx_iv32)
- cur_rx_iv32 = seq.tkip.iv32;
- }
-
- ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
- cur_rx_iv32, p1k);
- iwl_mvm_convert_p1k(p1k, rx_p1ks[0].p1k);
- ieee80211_get_tkip_rx_p1k(key, vif->bss_conf.bssid,
- cur_rx_iv32 + 1, p1k);
- iwl_mvm_convert_p1k(p1k, rx_p1ks[1].p1k);
-
- memcpy(rx_mic_key,
- &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],
- IWL_MIC_KEY_SIZE);
-
- data->use_tkip = true;
- data->use_rsc_tsc = true;
- break;
- case WLAN_CIPHER_SUITE_CCMP:
- if (sta) {
- u64 pn64;
-
- aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc;
- aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc;
-
- pn64 = atomic64_read(&key->tx_pn);
- aes_tx_sc->pn = cpu_to_le64(pn64);
- } else {
- aes_sc = data->rsc_tsc->all_tsc_rsc.aes.multicast_rsc;
- }
-
- /*
- * For non-QoS this relies on the fact that both the uCode and
- * mac80211 use TID 0 for checking the IV in the frames.
- */
- for (i = 0; i < IWL_NUM_RSC; i++) {
- u8 *pn = seq.ccmp.pn;
-
- ieee80211_get_key_rx_seq(key, i, &seq);
- aes_sc[i].pn = cpu_to_le64((u64)pn[5] |
- ((u64)pn[4] << 8) |
- ((u64)pn[3] << 16) |
- ((u64)pn[2] << 24) |
- ((u64)pn[1] << 32) |
- ((u64)pn[0] << 40));
- }
- data->use_rsc_tsc = true;
- break;
- }
-
- /*
- * The D3 firmware hardcodes the key offset 0 as the key it uses
- * to transmit packets to the AP, i.e. the PTK.
- */
- if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
- key->hw_key_idx = 0;
- mvm->ptk_ivlen = key->iv_len;
- mvm->ptk_icvlen = key->icv_len;
- } else {
- /*
- * firmware only supports TSC/RSC for a single key,
- * so if there are multiple keep overwriting them
- * with new ones -- this relies on mac80211 doing
- * list_add_tail().
- */
- key->hw_key_idx = 1;
- mvm->gtk_ivlen = key->iv_len;
- mvm->gtk_icvlen = key->icv_len;
- }
-
- ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, true);
- data->error = ret != 0;
-out_unlock:
- mutex_unlock(&mvm->mutex);
-}
-
-static int iwl_mvm_send_patterns(struct iwl_mvm *mvm,
- struct cfg80211_wowlan *wowlan)
-{
- struct iwl_wowlan_patterns_cmd *pattern_cmd;
- struct iwl_host_cmd cmd = {
- .id = WOWLAN_PATTERNS,
- .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
- };
- int i, err;
-
- if (!wowlan->n_patterns)
- return 0;
-
- cmd.len[0] = sizeof(*pattern_cmd) +
- wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern);
-
- pattern_cmd = kmalloc(cmd.len[0], GFP_KERNEL);
- if (!pattern_cmd)
- return -ENOMEM;
-
- pattern_cmd->n_patterns = cpu_to_le32(wowlan->n_patterns);
-
- for (i = 0; i < wowlan->n_patterns; i++) {
- int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8);
-
- memcpy(&pattern_cmd->patterns[i].mask,
- wowlan->patterns[i].mask, mask_len);
- memcpy(&pattern_cmd->patterns[i].pattern,
- wowlan->patterns[i].pattern,
- wowlan->patterns[i].pattern_len);
- pattern_cmd->patterns[i].mask_size = mask_len;
- pattern_cmd->patterns[i].pattern_size =
- wowlan->patterns[i].pattern_len;
- }
-
- cmd.data[0] = pattern_cmd;
- err = iwl_mvm_send_cmd(mvm, &cmd);
- kfree(pattern_cmd);
- return err;
-}
-
-enum iwl_mvm_tcp_packet_type {
- MVM_TCP_TX_SYN,
- MVM_TCP_RX_SYNACK,
- MVM_TCP_TX_DATA,
- MVM_TCP_RX_ACK,
- MVM_TCP_RX_WAKE,
- MVM_TCP_TX_FIN,
-};
-
-static __le16 pseudo_hdr_check(int len, __be32 saddr, __be32 daddr)
-{
- __sum16 check = tcp_v4_check(len, saddr, daddr, 0);
- return cpu_to_le16(be16_to_cpu((__force __be16)check));
-}
-
-static void iwl_mvm_build_tcp_packet(struct ieee80211_vif *vif,
- struct cfg80211_wowlan_tcp *tcp,
- void *_pkt, u8 *mask,
- __le16 *pseudo_hdr_csum,
- enum iwl_mvm_tcp_packet_type ptype)
-{
- struct {
- struct ethhdr eth;
- struct iphdr ip;
- struct tcphdr tcp;
- u8 data[];
- } __packed *pkt = _pkt;
- u16 ip_tot_len = sizeof(struct iphdr) + sizeof(struct tcphdr);
- int i;
-
- pkt->eth.h_proto = cpu_to_be16(ETH_P_IP),
- pkt->ip.version = 4;
- pkt->ip.ihl = 5;
- pkt->ip.protocol = IPPROTO_TCP;
-
- switch (ptype) {
- case MVM_TCP_TX_SYN:
- case MVM_TCP_TX_DATA:
- case MVM_TCP_TX_FIN:
- memcpy(pkt->eth.h_dest, tcp->dst_mac, ETH_ALEN);
- memcpy(pkt->eth.h_source, vif->addr, ETH_ALEN);
- pkt->ip.ttl = 128;
- pkt->ip.saddr = tcp->src;
- pkt->ip.daddr = tcp->dst;
- pkt->tcp.source = cpu_to_be16(tcp->src_port);
- pkt->tcp.dest = cpu_to_be16(tcp->dst_port);
- /* overwritten for TX SYN later */
- pkt->tcp.doff = sizeof(struct tcphdr) / 4;
- pkt->tcp.window = cpu_to_be16(65000);
- break;
- case MVM_TCP_RX_SYNACK:
- case MVM_TCP_RX_ACK:
- case MVM_TCP_RX_WAKE:
- memcpy(pkt->eth.h_dest, vif->addr, ETH_ALEN);
- memcpy(pkt->eth.h_source, tcp->dst_mac, ETH_ALEN);
- pkt->ip.saddr = tcp->dst;
- pkt->ip.daddr = tcp->src;
- pkt->tcp.source = cpu_to_be16(tcp->dst_port);
- pkt->tcp.dest = cpu_to_be16(tcp->src_port);
- break;
- default:
- WARN_ON(1);
- return;
- }
-
- switch (ptype) {
- case MVM_TCP_TX_SYN:
- /* firmware assumes 8 option bytes - 8 NOPs for now */
- memset(pkt->data, 0x01, 8);
- ip_tot_len += 8;
- pkt->tcp.doff = (sizeof(struct tcphdr) + 8) / 4;
- pkt->tcp.syn = 1;
- break;
- case MVM_TCP_TX_DATA:
- ip_tot_len += tcp->payload_len;
- memcpy(pkt->data, tcp->payload, tcp->payload_len);
- pkt->tcp.psh = 1;
- pkt->tcp.ack = 1;
- break;
- case MVM_TCP_TX_FIN:
- pkt->tcp.fin = 1;
- pkt->tcp.ack = 1;
- break;
- case MVM_TCP_RX_SYNACK:
- pkt->tcp.syn = 1;
- pkt->tcp.ack = 1;
- break;
- case MVM_TCP_RX_ACK:
- pkt->tcp.ack = 1;
- break;
- case MVM_TCP_RX_WAKE:
- ip_tot_len += tcp->wake_len;
- pkt->tcp.psh = 1;
- pkt->tcp.ack = 1;
- memcpy(pkt->data, tcp->wake_data, tcp->wake_len);
- break;
- }
-
- switch (ptype) {
- case MVM_TCP_TX_SYN:
- case MVM_TCP_TX_DATA:
- case MVM_TCP_TX_FIN:
- pkt->ip.tot_len = cpu_to_be16(ip_tot_len);
- pkt->ip.check = ip_fast_csum(&pkt->ip, pkt->ip.ihl);
- break;
- case MVM_TCP_RX_WAKE:
- for (i = 0; i < DIV_ROUND_UP(tcp->wake_len, 8); i++) {
- u8 tmp = tcp->wake_mask[i];
- mask[i + 6] |= tmp << 6;
- if (i + 1 < DIV_ROUND_UP(tcp->wake_len, 8))
- mask[i + 7] = tmp >> 2;
- }
- /* fall through for ethernet/IP/TCP headers mask */
- case MVM_TCP_RX_SYNACK:
- case MVM_TCP_RX_ACK:
- mask[0] = 0xff; /* match ethernet */
- /*
- * match ethernet, ip.version, ip.ihl
- * the ip.ihl half byte is really masked out by firmware
- */
- mask[1] = 0x7f;
- mask[2] = 0x80; /* match ip.protocol */
- mask[3] = 0xfc; /* match ip.saddr, ip.daddr */
- mask[4] = 0x3f; /* match ip.daddr, tcp.source, tcp.dest */
- mask[5] = 0x80; /* match tcp flags */
- /* leave rest (0 or set for MVM_TCP_RX_WAKE) */
- break;
- };
-
- *pseudo_hdr_csum = pseudo_hdr_check(ip_tot_len - sizeof(struct iphdr),
- pkt->ip.saddr, pkt->ip.daddr);
-}
-
-static int iwl_mvm_send_remote_wake_cfg(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct cfg80211_wowlan_tcp *tcp)
-{
- struct iwl_wowlan_remote_wake_config *cfg;
- struct iwl_host_cmd cmd = {
- .id = REMOTE_WAKE_CONFIG_CMD,
- .len = { sizeof(*cfg), },
- .dataflags = { IWL_HCMD_DFL_NOCOPY, },
- };
- int ret;
-
- if (!tcp)
- return 0;
-
- cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
- if (!cfg)
- return -ENOMEM;
- cmd.data[0] = cfg;
-
- cfg->max_syn_retries = 10;
- cfg->max_data_retries = 10;
- cfg->tcp_syn_ack_timeout = 1; /* seconds */
- cfg->tcp_ack_timeout = 1; /* seconds */
-
- /* SYN (TX) */
- iwl_mvm_build_tcp_packet(
- vif, tcp, cfg->syn_tx.data, NULL,
- &cfg->syn_tx.info.tcp_pseudo_header_checksum,
- MVM_TCP_TX_SYN);
- cfg->syn_tx.info.tcp_payload_length = 0;
-
- /* SYN/ACK (RX) */
- iwl_mvm_build_tcp_packet(
- vif, tcp, cfg->synack_rx.data, cfg->synack_rx.rx_mask,
- &cfg->synack_rx.info.tcp_pseudo_header_checksum,
- MVM_TCP_RX_SYNACK);
- cfg->synack_rx.info.tcp_payload_length = 0;
-
- /* KEEPALIVE/ACK (TX) */
- iwl_mvm_build_tcp_packet(
- vif, tcp, cfg->keepalive_tx.data, NULL,
- &cfg->keepalive_tx.info.tcp_pseudo_header_checksum,
- MVM_TCP_TX_DATA);
- cfg->keepalive_tx.info.tcp_payload_length =
- cpu_to_le16(tcp->payload_len);
- cfg->sequence_number_offset = tcp->payload_seq.offset;
- /* length must be 0..4, the field is little endian */
- cfg->sequence_number_length = tcp->payload_seq.len;
- cfg->initial_sequence_number = cpu_to_le32(tcp->payload_seq.start);
- cfg->keepalive_interval = cpu_to_le16(tcp->data_interval);
- if (tcp->payload_tok.len) {
- cfg->token_offset = tcp->payload_tok.offset;
- cfg->token_length = tcp->payload_tok.len;
- cfg->num_tokens =
- cpu_to_le16(tcp->tokens_size % tcp->payload_tok.len);
- memcpy(cfg->tokens, tcp->payload_tok.token_stream,
- tcp->tokens_size);
- } else {
- /* set tokens to max value to almost never run out */
- cfg->num_tokens = cpu_to_le16(65535);
- }
-
- /* ACK (RX) */
- iwl_mvm_build_tcp_packet(
- vif, tcp, cfg->keepalive_ack_rx.data,
- cfg->keepalive_ack_rx.rx_mask,
- &cfg->keepalive_ack_rx.info.tcp_pseudo_header_checksum,
- MVM_TCP_RX_ACK);
- cfg->keepalive_ack_rx.info.tcp_payload_length = 0;
-
- /* WAKEUP (RX) */
- iwl_mvm_build_tcp_packet(
- vif, tcp, cfg->wake_rx.data, cfg->wake_rx.rx_mask,
- &cfg->wake_rx.info.tcp_pseudo_header_checksum,
- MVM_TCP_RX_WAKE);
- cfg->wake_rx.info.tcp_payload_length =
- cpu_to_le16(tcp->wake_len);
-
- /* FIN */
- iwl_mvm_build_tcp_packet(
- vif, tcp, cfg->fin_tx.data, NULL,
- &cfg->fin_tx.info.tcp_pseudo_header_checksum,
- MVM_TCP_TX_FIN);
- cfg->fin_tx.info.tcp_payload_length = 0;
-
- ret = iwl_mvm_send_cmd(mvm, &cmd);
- kfree(cfg);
-
- return ret;
-}
-
-static int iwl_mvm_d3_reprogram(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
- struct ieee80211_sta *ap_sta)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct ieee80211_chanctx_conf *ctx;
- u8 chains_static, chains_dynamic;
- struct cfg80211_chan_def chandef;
- int ret, i;
- struct iwl_binding_cmd binding_cmd = {};
- struct iwl_time_quota_cmd quota_cmd = {};
- u32 status;
-
- /* add back the PHY */
- if (WARN_ON(!mvmvif->phy_ctxt))
- return -EINVAL;
-
- rcu_read_lock();
- ctx = rcu_dereference(vif->chanctx_conf);
- if (WARN_ON(!ctx)) {
- rcu_read_unlock();
- return -EINVAL;
- }
- chandef = ctx->def;
- chains_static = ctx->rx_chains_static;
- chains_dynamic = ctx->rx_chains_dynamic;
- rcu_read_unlock();
-
- ret = iwl_mvm_phy_ctxt_add(mvm, mvmvif->phy_ctxt, &chandef,
- chains_static, chains_dynamic);
- if (ret)
- return ret;
-
- /* add back the MAC */
- mvmvif->uploaded = false;
-
- if (WARN_ON(!vif->bss_conf.assoc))
- return -EINVAL;
-
- ret = iwl_mvm_mac_ctxt_add(mvm, vif);
- if (ret)
- return ret;
-
- /* add back binding - XXX refactor? */
- binding_cmd.id_and_color =
- cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
- mvmvif->phy_ctxt->color));
- binding_cmd.action = cpu_to_le32(FW_CTXT_ACTION_ADD);
- binding_cmd.phy =
- cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
- mvmvif->phy_ctxt->color));
- binding_cmd.macs[0] = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
- mvmvif->color));
- for (i = 1; i < MAX_MACS_IN_BINDING; i++)
- binding_cmd.macs[i] = cpu_to_le32(FW_CTXT_INVALID);
-
- status = 0;
- ret = iwl_mvm_send_cmd_pdu_status(mvm, BINDING_CONTEXT_CMD,
- sizeof(binding_cmd), &binding_cmd,
- &status);
- if (ret) {
- IWL_ERR(mvm, "Failed to add binding: %d\n", ret);
- return ret;
- }
-
- if (status) {
- IWL_ERR(mvm, "Binding command failed: %u\n", status);
- return -EIO;
- }
-
- ret = iwl_mvm_sta_send_to_fw(mvm, ap_sta, false);
- if (ret)
- return ret;
- rcu_assign_pointer(mvm->fw_id_to_mac_id[mvmvif->ap_sta_id], ap_sta);
-
- ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false, NULL);
- if (ret)
- return ret;
-
- /* and some quota */
- quota_cmd.quotas[0].id_and_color =
- cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id,
- mvmvif->phy_ctxt->color));
- quota_cmd.quotas[0].quota = cpu_to_le32(IWL_MVM_MAX_QUOTA);
- quota_cmd.quotas[0].max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA);
-
- for (i = 1; i < MAX_BINDINGS; i++)
- quota_cmd.quotas[i].id_and_color = cpu_to_le32(FW_CTXT_INVALID);
-
- ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0,
- sizeof(quota_cmd), "a_cmd);
- if (ret)
- IWL_ERR(mvm, "Failed to send quota: %d\n", ret);
-
- if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm))
- IWL_ERR(mvm, "Failed to initialize D3 LAR information\n");
-
- return 0;
-}
-
-static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_nonqos_seq_query_cmd query_cmd = {
- .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET),
- .mac_id_n_color =
- cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
- mvmvif->color)),
- };
- struct iwl_host_cmd cmd = {
- .id = NON_QOS_TX_COUNTER_CMD,
- .flags = CMD_WANT_SKB,
- };
- int err;
- u32 size;
-
- cmd.data[0] = &query_cmd;
- cmd.len[0] = sizeof(query_cmd);
-
- err = iwl_mvm_send_cmd(mvm, &cmd);
- if (err)
- return err;
-
- size = iwl_rx_packet_payload_len(cmd.resp_pkt);
- if (size < sizeof(__le16)) {
- err = -EINVAL;
- } else {
- err = le16_to_cpup((__le16 *)cmd.resp_pkt->data);
- /* firmware returns next, not last-used seqno */
- err = (u16) (err - 0x10);
- }
-
- iwl_free_resp(&cmd);
- return err;
-}
-
-void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_nonqos_seq_query_cmd query_cmd = {
- .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET),
- .mac_id_n_color =
- cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id,
- mvmvif->color)),
- .value = cpu_to_le16(mvmvif->seqno),
- };
-
- /* return if called during restart, not resume from D3 */
- if (!mvmvif->seqno_valid)
- return;
-
- mvmvif->seqno_valid = false;
-
- if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0,
- sizeof(query_cmd), &query_cmd))
- IWL_ERR(mvm, "failed to set non-QoS seqno\n");
-}
-
-static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm)
-{
- iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
-
- iwl_trans_stop_device(mvm->trans);
-
- /*
- * Set the HW restart bit -- this is mostly true as we're
- * going to load new firmware and reprogram that, though
- * the reprogramming is going to be manual to avoid adding
- * all the MACs that aren't support.
- * We don't have to clear up everything though because the
- * reprogramming is manual. When we resume, we'll actually
- * go through a proper restart sequence again to switch
- * back to the runtime firmware image.
- */
- set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
-
- /* We reprogram keys and shouldn't allocate new key indices */
- memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
-
- mvm->ptk_ivlen = 0;
- mvm->ptk_icvlen = 0;
- mvm->ptk_ivlen = 0;
- mvm->ptk_icvlen = 0;
-
- return iwl_mvm_load_d3_fw(mvm);
-}
-
-static int
-iwl_mvm_get_wowlan_config(struct iwl_mvm *mvm,
- struct cfg80211_wowlan *wowlan,
- struct iwl_wowlan_config_cmd *wowlan_config_cmd,
- struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
- struct ieee80211_sta *ap_sta)
-{
- int ret;
- struct iwl_mvm_sta *mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
-
- /* TODO: wowlan_config_cmd->wowlan_ba_teardown_tids */
-
- wowlan_config_cmd->is_11n_connection =
- ap_sta->ht_cap.ht_supported;
-
- /* Query the last used seqno and set it */
- ret = iwl_mvm_get_last_nonqos_seq(mvm, vif);
- if (ret < 0)
- return ret;
-
- wowlan_config_cmd->non_qos_seq = cpu_to_le16(ret);
-
- iwl_mvm_set_wowlan_qos_seq(mvm_ap_sta, wowlan_config_cmd);
-
- if (wowlan->disconnect)
- wowlan_config_cmd->wakeup_filter |=
- cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS |
- IWL_WOWLAN_WAKEUP_LINK_CHANGE);
- if (wowlan->magic_pkt)
- wowlan_config_cmd->wakeup_filter |=
- cpu_to_le32(IWL_WOWLAN_WAKEUP_MAGIC_PACKET);
- if (wowlan->gtk_rekey_failure)
- wowlan_config_cmd->wakeup_filter |=
- cpu_to_le32(IWL_WOWLAN_WAKEUP_GTK_REKEY_FAIL);
- if (wowlan->eap_identity_req)
- wowlan_config_cmd->wakeup_filter |=
- cpu_to_le32(IWL_WOWLAN_WAKEUP_EAP_IDENT_REQ);
- if (wowlan->four_way_handshake)
- wowlan_config_cmd->wakeup_filter |=
- cpu_to_le32(IWL_WOWLAN_WAKEUP_4WAY_HANDSHAKE);
- if (wowlan->n_patterns)
- wowlan_config_cmd->wakeup_filter |=
- cpu_to_le32(IWL_WOWLAN_WAKEUP_PATTERN_MATCH);
-
- if (wowlan->rfkill_release)
- wowlan_config_cmd->wakeup_filter |=
- cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
-
- if (wowlan->tcp) {
- /*
- * Set the "link change" (really "link lost") flag as well
- * since that implies losing the TCP connection.
- */
- wowlan_config_cmd->wakeup_filter |=
- cpu_to_le32(IWL_WOWLAN_WAKEUP_REMOTE_LINK_LOSS |
- IWL_WOWLAN_WAKEUP_REMOTE_SIGNATURE_TABLE |
- IWL_WOWLAN_WAKEUP_REMOTE_WAKEUP_PACKET |
- IWL_WOWLAN_WAKEUP_LINK_CHANGE);
- }
-
- return 0;
-}
-
-static int
-iwl_mvm_wowlan_config(struct iwl_mvm *mvm,
- struct cfg80211_wowlan *wowlan,
- struct iwl_wowlan_config_cmd *wowlan_config_cmd,
- struct ieee80211_vif *vif, struct iwl_mvm_vif *mvmvif,
- struct ieee80211_sta *ap_sta)
-{
- struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {};
- struct iwl_wowlan_tkip_params_cmd tkip_cmd = {};
- struct wowlan_key_data key_data = {
- .use_rsc_tsc = false,
- .tkip = &tkip_cmd,
- .use_tkip = false,
- };
- int ret;
-
- ret = iwl_mvm_switch_to_d3(mvm);
- if (ret)
- return ret;
-
- ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta);
- if (ret)
- return ret;
-
- key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL);
- if (!key_data.rsc_tsc)
- return -ENOMEM;
-
- if (!iwlwifi_mod_params.sw_crypto) {
- /*
- * This needs to be unlocked due to lock ordering
- * constraints. Since we're in the suspend path
- * that isn't really a problem though.
- */
- mutex_unlock(&mvm->mutex);
- ieee80211_iter_keys(mvm->hw, vif,
- iwl_mvm_wowlan_program_keys,
- &key_data);
- mutex_lock(&mvm->mutex);
- if (key_data.error) {
- ret = -EIO;
- goto out;
- }
-
- if (key_data.use_rsc_tsc) {
- struct iwl_host_cmd rsc_tsc_cmd = {
- .id = WOWLAN_TSC_RSC_PARAM,
- .data[0] = key_data.rsc_tsc,
- .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
- .len[0] = sizeof(*key_data.rsc_tsc),
- };
-
- ret = iwl_mvm_send_cmd(mvm, &rsc_tsc_cmd);
- if (ret)
- goto out;
- }
-
- if (key_data.use_tkip) {
- ret = iwl_mvm_send_cmd_pdu(mvm,
- WOWLAN_TKIP_PARAM,
- 0, sizeof(tkip_cmd),
- &tkip_cmd);
- if (ret)
- goto out;
- }
-
- if (mvmvif->rekey_data.valid) {
- memset(&kek_kck_cmd, 0, sizeof(kek_kck_cmd));
- memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck,
- NL80211_KCK_LEN);
- kek_kck_cmd.kck_len = cpu_to_le16(NL80211_KCK_LEN);
- memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek,
- NL80211_KEK_LEN);
- kek_kck_cmd.kek_len = cpu_to_le16(NL80211_KEK_LEN);
- kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr;
-
- ret = iwl_mvm_send_cmd_pdu(mvm,
- WOWLAN_KEK_KCK_MATERIAL, 0,
- sizeof(kek_kck_cmd),
- &kek_kck_cmd);
- if (ret)
- goto out;
- }
- }
-
- ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
- sizeof(*wowlan_config_cmd),
- wowlan_config_cmd);
- if (ret)
- goto out;
-
- ret = iwl_mvm_send_patterns(mvm, wowlan);
- if (ret)
- goto out;
-
- ret = iwl_mvm_send_proto_offload(mvm, vif, false, 0);
- if (ret)
- goto out;
-
- ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp);
-
-out:
- kfree(key_data.rsc_tsc);
- return ret;
-}
-
-static int
-iwl_mvm_netdetect_config(struct iwl_mvm *mvm,
- struct cfg80211_wowlan *wowlan,
- struct cfg80211_sched_scan_request *nd_config,
- struct ieee80211_vif *vif)
-{
- struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
- int ret;
-
- ret = iwl_mvm_switch_to_d3(mvm);
- if (ret)
- return ret;
-
- /* rfkill release can be either for wowlan or netdetect */
- if (wowlan->rfkill_release)
- wowlan_config_cmd.wakeup_filter |=
- cpu_to_le32(IWL_WOWLAN_WAKEUP_RF_KILL_DEASSERT);
-
- ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0,
- sizeof(wowlan_config_cmd),
- &wowlan_config_cmd);
- if (ret)
- return ret;
-
- ret = iwl_mvm_sched_scan_start(mvm, vif, nd_config, &mvm->nd_ies,
- IWL_MVM_SCAN_NETDETECT);
- if (ret)
- return ret;
-
- if (WARN_ON(mvm->nd_match_sets || mvm->nd_channels))
- return -EBUSY;
-
- /* save the sched scan matchsets... */
- if (nd_config->n_match_sets) {
- mvm->nd_match_sets = kmemdup(nd_config->match_sets,
- sizeof(*nd_config->match_sets) *
- nd_config->n_match_sets,
- GFP_KERNEL);
- if (mvm->nd_match_sets)
- mvm->n_nd_match_sets = nd_config->n_match_sets;
- }
-
- /* ...and the sched scan channels for later reporting */
- mvm->nd_channels = kmemdup(nd_config->channels,
- sizeof(*nd_config->channels) *
- nd_config->n_channels,
- GFP_KERNEL);
- if (mvm->nd_channels)
- mvm->n_nd_channels = nd_config->n_channels;
-
- return 0;
-}
-
-static void iwl_mvm_free_nd(struct iwl_mvm *mvm)
-{
- kfree(mvm->nd_match_sets);
- mvm->nd_match_sets = NULL;
- mvm->n_nd_match_sets = 0;
- kfree(mvm->nd_channels);
- mvm->nd_channels = NULL;
- mvm->n_nd_channels = 0;
-}
-
-static int __iwl_mvm_suspend(struct ieee80211_hw *hw,
- struct cfg80211_wowlan *wowlan,
- bool test)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- struct ieee80211_vif *vif = NULL;
- struct iwl_mvm_vif *mvmvif = NULL;
- struct ieee80211_sta *ap_sta = NULL;
- struct iwl_d3_manager_config d3_cfg_cmd_data = {
- /*
- * Program the minimum sleep time to 10 seconds, as many
- * platforms have issues processing a wakeup signal while
- * still being in the process of suspending.
- */
- .min_sleep_time = cpu_to_le32(10 * 1000 * 1000),
- };
- struct iwl_host_cmd d3_cfg_cmd = {
- .id = D3_CONFIG_CMD,
- .flags = CMD_WANT_SKB,
- .data[0] = &d3_cfg_cmd_data,
- .len[0] = sizeof(d3_cfg_cmd_data),
- };
- int ret;
- int len __maybe_unused;
-
- if (!wowlan) {
- /*
- * mac80211 shouldn't get here, but for D3 test
- * it doesn't warrant a warning
- */
- WARN_ON(!test);
- return -EINVAL;
- }
-
- mutex_lock(&mvm->mutex);
-
- vif = iwl_mvm_get_bss_vif(mvm);
- if (IS_ERR_OR_NULL(vif)) {
- ret = 1;
- goto out_noreset;
- }
-
- mvmvif = iwl_mvm_vif_from_mac80211(vif);
-
- if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) {
- /* if we're not associated, this must be netdetect */
- if (!wowlan->nd_config && !mvm->nd_config) {
- ret = 1;
- goto out_noreset;
- }
-
- ret = iwl_mvm_netdetect_config(
- mvm, wowlan, wowlan->nd_config ?: mvm->nd_config, vif);
- if (ret)
- goto out;
-
- mvm->net_detect = true;
- } else {
- struct iwl_wowlan_config_cmd wowlan_config_cmd = {};
-
- ap_sta = rcu_dereference_protected(
- mvm->fw_id_to_mac_id[mvmvif->ap_sta_id],
- lockdep_is_held(&mvm->mutex));
- if (IS_ERR_OR_NULL(ap_sta)) {
- ret = -EINVAL;
- goto out_noreset;
- }
-
- ret = iwl_mvm_get_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
- vif, mvmvif, ap_sta);
- if (ret)
- goto out_noreset;
- ret = iwl_mvm_wowlan_config(mvm, wowlan, &wowlan_config_cmd,
- vif, mvmvif, ap_sta);
- if (ret)
- goto out;
-
- mvm->net_detect = false;
- }
-
- ret = iwl_mvm_power_update_device(mvm);
- if (ret)
- goto out;
-
- ret = iwl_mvm_power_update_mac(mvm);
- if (ret)
- goto out;
-
-#ifdef CONFIG_IWLWIFI_DEBUGFS
- if (mvm->d3_wake_sysassert)
- d3_cfg_cmd_data.wakeup_flags |=
- cpu_to_le32(IWL_WAKEUP_D3_CONFIG_FW_ERROR);
-#endif
-
- /* must be last -- this switches firmware state */
- ret = iwl_mvm_send_cmd(mvm, &d3_cfg_cmd);
- if (ret)
- goto out;
-#ifdef CONFIG_IWLWIFI_DEBUGFS
- len = iwl_rx_packet_payload_len(d3_cfg_cmd.resp_pkt);
- if (len >= sizeof(u32)) {
- mvm->d3_test_pme_ptr =
- le32_to_cpup((__le32 *)d3_cfg_cmd.resp_pkt->data);
- }
-#endif
- iwl_free_resp(&d3_cfg_cmd);
-
- clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
-
- iwl_trans_d3_suspend(mvm->trans, test);
- out:
- if (ret < 0) {
- iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
- ieee80211_restart_hw(mvm->hw);
- iwl_mvm_free_nd(mvm);
- }
- out_noreset:
- mutex_unlock(&mvm->mutex);
-
- return ret;
-}
-
-static int iwl_mvm_enter_d0i3_sync(struct iwl_mvm *mvm)
-{
- struct iwl_notification_wait wait_d3;
- static const u16 d3_notif[] = { D3_CONFIG_CMD };
- int ret;
-
- iwl_init_notification_wait(&mvm->notif_wait, &wait_d3,
- d3_notif, ARRAY_SIZE(d3_notif),
- NULL, NULL);
-
- ret = iwl_mvm_enter_d0i3(mvm->hw->priv);
- if (ret)
- goto remove_notif;
-
- ret = iwl_wait_notification(&mvm->notif_wait, &wait_d3, HZ);
- WARN_ON_ONCE(ret);
- return ret;
-
-remove_notif:
- iwl_remove_notification(&mvm->notif_wait, &wait_d3);
- return ret;
-}
-
-int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
- int ret;
-
- /* make sure the d0i3 exit work is not pending */
- flush_work(&mvm->d0i3_exit_work);
-
- ret = iwl_trans_suspend(mvm->trans);
- if (ret)
- return ret;
-
- mvm->trans->wowlan_d0i3 = wowlan->any;
- if (mvm->trans->wowlan_d0i3) {
- /* 'any' trigger means d0i3 usage */
- if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND) {
- ret = iwl_mvm_enter_d0i3_sync(mvm);
-
- if (ret)
- return ret;
- }
-
- mutex_lock(&mvm->d0i3_suspend_mutex);
- __set_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
- mutex_unlock(&mvm->d0i3_suspend_mutex);
-
- iwl_trans_d3_suspend(mvm->trans, false);
-
- return 0;
- }
-
- return __iwl_mvm_suspend(hw, wowlan, false);
-}
-
-/* converted data from the different status responses */
-struct iwl_wowlan_status_data {
- u16 pattern_number;
- u16 qos_seq_ctr[8];
- u32 wakeup_reasons;
- u32 wake_packet_length;
- u32 wake_packet_bufsize;
- const u8 *wake_packet;
-};
-
-static void iwl_mvm_report_wakeup_reasons(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct iwl_wowlan_status_data *status)
-{
- struct sk_buff *pkt = NULL;
- struct cfg80211_wowlan_wakeup wakeup = {
- .pattern_idx = -1,
- };
- struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
- u32 reasons = status->wakeup_reasons;
-
- if (reasons == IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) {
- wakeup_report = NULL;
- goto report;
- }
-
- if (reasons & IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET)
- wakeup.magic_pkt = true;
-
- if (reasons & IWL_WOWLAN_WAKEUP_BY_PATTERN)
- wakeup.pattern_idx =
- status->pattern_number;
-
- if (reasons & (IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
- IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH))
- wakeup.disconnect = true;
-
- if (reasons & IWL_WOWLAN_WAKEUP_BY_GTK_REKEY_FAILURE)
- wakeup.gtk_rekey_failure = true;
-
- if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
- wakeup.rfkill_release = true;
-
- if (reasons & IWL_WOWLAN_WAKEUP_BY_EAPOL_REQUEST)
- wakeup.eap_identity_req = true;
-
- if (reasons & IWL_WOWLAN_WAKEUP_BY_FOUR_WAY_HANDSHAKE)
- wakeup.four_way_handshake = true;
-
- if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_LINK_LOSS)
- wakeup.tcp_connlost = true;
-
- if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_SIGNATURE_TABLE)
- wakeup.tcp_nomoretokens = true;
-
- if (reasons & IWL_WOWLAN_WAKEUP_BY_REM_WAKE_WAKEUP_PACKET)
- wakeup.tcp_match = true;
-
- if (status->wake_packet_bufsize) {
- int pktsize = status->wake_packet_bufsize;
- int pktlen = status->wake_packet_length;
- const u8 *pktdata = status->wake_packet;
- struct ieee80211_hdr *hdr = (void *)pktdata;
- int truncated = pktlen - pktsize;
-
- /* this would be a firmware bug */
- if (WARN_ON_ONCE(truncated < 0))
- truncated = 0;
-
- if (ieee80211_is_data(hdr->frame_control)) {
- int hdrlen = ieee80211_hdrlen(hdr->frame_control);
- int ivlen = 0, icvlen = 4; /* also FCS */
-
- pkt = alloc_skb(pktsize, GFP_KERNEL);
- if (!pkt)
- goto report;
-
- memcpy(skb_put(pkt, hdrlen), pktdata, hdrlen);
- pktdata += hdrlen;
- pktsize -= hdrlen;
-
- if (ieee80211_has_protected(hdr->frame_control)) {
- /*
- * This is unlocked and using gtk_i(c)vlen,
- * but since everything is under RTNL still
- * that's not really a problem - changing
- * it would be difficult.
- */
- if (is_multicast_ether_addr(hdr->addr1)) {
- ivlen = mvm->gtk_ivlen;
- icvlen += mvm->gtk_icvlen;
- } else {
- ivlen = mvm->ptk_ivlen;
- icvlen += mvm->ptk_icvlen;
- }
- }
-
- /* if truncated, FCS/ICV is (partially) gone */
- if (truncated >= icvlen) {
- icvlen = 0;
- truncated -= icvlen;
- } else {
- icvlen -= truncated;
- truncated = 0;
- }
-
- pktsize -= ivlen + icvlen;
- pktdata += ivlen;
-
- memcpy(skb_put(pkt, pktsize), pktdata, pktsize);
-
- if (ieee80211_data_to_8023(pkt, vif->addr, vif->type))
- goto report;
- wakeup.packet = pkt->data;
- wakeup.packet_present_len = pkt->len;
- wakeup.packet_len = pkt->len - truncated;
- wakeup.packet_80211 = false;
- } else {
- int fcslen = 4;
-
- if (truncated >= 4) {
- truncated -= 4;
- fcslen = 0;
- } else {
- fcslen -= truncated;
- truncated = 0;
- }
- pktsize -= fcslen;
- wakeup.packet = status->wake_packet;
- wakeup.packet_present_len = pktsize;
- wakeup.packet_len = pktlen - truncated;
- wakeup.packet_80211 = true;
- }
- }
-
- report:
- ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
- kfree_skb(pkt);
-}
-
-static void iwl_mvm_aes_sc_to_seq(struct aes_sc *sc,
- struct ieee80211_key_seq *seq)
-{
- u64 pn;
-
- pn = le64_to_cpu(sc->pn);
- seq->ccmp.pn[0] = pn >> 40;
- seq->ccmp.pn[1] = pn >> 32;
- seq->ccmp.pn[2] = pn >> 24;
- seq->ccmp.pn[3] = pn >> 16;
- seq->ccmp.pn[4] = pn >> 8;
- seq->ccmp.pn[5] = pn;
-}
-
-static void iwl_mvm_tkip_sc_to_seq(struct tkip_sc *sc,
- struct ieee80211_key_seq *seq)
-{
- seq->tkip.iv32 = le32_to_cpu(sc->iv32);
- seq->tkip.iv16 = le16_to_cpu(sc->iv16);
-}
-
-static void iwl_mvm_set_aes_rx_seq(struct aes_sc *scs,
- struct ieee80211_key_conf *key)
-{
- int tid;
-
- BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
-
- for (tid = 0; tid < IWL_NUM_RSC; tid++) {
- struct ieee80211_key_seq seq = {};
-
- iwl_mvm_aes_sc_to_seq(&scs[tid], &seq);
- ieee80211_set_key_rx_seq(key, tid, &seq);
- }
-}
-
-static void iwl_mvm_set_tkip_rx_seq(struct tkip_sc *scs,
- struct ieee80211_key_conf *key)
-{
- int tid;
-
- BUILD_BUG_ON(IWL_NUM_RSC != IEEE80211_NUM_TIDS);
-
- for (tid = 0; tid < IWL_NUM_RSC; tid++) {
- struct ieee80211_key_seq seq = {};
-
- iwl_mvm_tkip_sc_to_seq(&scs[tid], &seq);
- ieee80211_set_key_rx_seq(key, tid, &seq);
- }
-}
-
-static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key,
- struct iwl_wowlan_status *status)
-{
- union iwl_all_tsc_rsc *rsc = &status->gtk.rsc.all_tsc_rsc;
-
- switch (key->cipher) {
- case WLAN_CIPHER_SUITE_CCMP:
- iwl_mvm_set_aes_rx_seq(rsc->aes.multicast_rsc, key);
- break;
- case WLAN_CIPHER_SUITE_TKIP:
- iwl_mvm_set_tkip_rx_seq(rsc->tkip.multicast_rsc, key);
- break;
- default:
- WARN_ON(1);
- }
-}
-
-struct iwl_mvm_d3_gtk_iter_data {
- struct iwl_wowlan_status *status;
- void *last_gtk;
- u32 cipher;
- bool find_phase, unhandled_cipher;
- int num_keys;
-};
-
-static void iwl_mvm_d3_update_gtks(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta,
- struct ieee80211_key_conf *key,
- void *_data)
-{
- struct iwl_mvm_d3_gtk_iter_data *data = _data;
-
- if (data->unhandled_cipher)
- return;
-
- switch (key->cipher) {
- case WLAN_CIPHER_SUITE_WEP40:
- case WLAN_CIPHER_SUITE_WEP104:
- /* ignore WEP completely, nothing to do */
- return;
- case WLAN_CIPHER_SUITE_CCMP:
- case WLAN_CIPHER_SUITE_TKIP:
- /* we support these */
- break;
- default:
- /* everything else (even CMAC for MFP) - disconnect from AP */
- data->unhandled_cipher = true;
- return;
- }
-
- data->num_keys++;
-
- /*
- * pairwise key - update sequence counters only;
- * note that this assumes no TDLS sessions are active
- */
- if (sta) {
- struct ieee80211_key_seq seq = {};
- union iwl_all_tsc_rsc *sc = &data->status->gtk.rsc.all_tsc_rsc;
-
- if (data->find_phase)
- return;
-
- switch (key->cipher) {
- case WLAN_CIPHER_SUITE_CCMP:
- iwl_mvm_set_aes_rx_seq(sc->aes.unicast_rsc, key);
- atomic64_set(&key->tx_pn, le64_to_cpu(sc->aes.tsc.pn));
- break;
- case WLAN_CIPHER_SUITE_TKIP:
- iwl_mvm_tkip_sc_to_seq(&sc->tkip.tsc, &seq);
- iwl_mvm_set_tkip_rx_seq(sc->tkip.unicast_rsc, key);
- ieee80211_set_key_tx_seq(key, &seq);
- break;
- }
-
- /* that's it for this key */
- return;
- }
-
- if (data->find_phase) {
- data->last_gtk = key;
- data->cipher = key->cipher;
- return;
- }
-
- if (data->status->num_of_gtk_rekeys)
- ieee80211_remove_key(key);
- else if (data->last_gtk == key)
- iwl_mvm_set_key_rx_seq(key, data->status);
-}
-
-static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif,
- struct iwl_wowlan_status *status)
-{
- struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- struct iwl_mvm_d3_gtk_iter_data gtkdata = {
- .status = status,
- };
- u32 disconnection_reasons =
- IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_MISSED_BEACON |
- IWL_WOWLAN_WAKEUP_BY_DISCONNECTION_ON_DEAUTH;
-
- if (!status || !vif->bss_conf.bssid)
- return false;
-
- if (le32_to_cpu(status->wakeup_reasons) & disconnection_reasons)
- return false;
-
- /* find last GTK that we used initially, if any */
- gtkdata.find_phase = true;
- ieee80211_iter_keys(mvm->hw, vif,
- iwl_mvm_d3_update_gtks, >kdata);
- /* not trying to keep connections with MFP/unhandled ciphers */
- if (gtkdata.unhandled_cipher)
- return false;
- if (!gtkdata.num_keys)
- goto out;
- if (!gtkdata.last_gtk)
- return false;
-
- /*
- * invalidate all other GTKs that might still exist and update
- * the one that we used
- */
- gtkdata.find_phase = false;
- ieee80211_iter_keys(mvm->hw, vif,
- iwl_mvm_d3_update_gtks, >kdata);
-
- if (status->num_of_gtk_rekeys) {
- struct ieee80211_key_conf *key;
- struct {
- struct ieee80211_key_conf conf;
- u8 key[32];
- } conf = {
- .conf.cipher = gtkdata.cipher,
- .conf.keyidx = status->gtk.key_index,
- };
-
- switch (gtkdata.cipher) {
- case WLAN_CIPHER_SUITE_CCMP:
- conf.conf.keylen = WLAN_KEY_LEN_CCMP;
- memcpy(conf.conf.key, status->gtk.decrypt_key,
- WLAN_KEY_LEN_CCMP);
- break;
- case WLAN_CIPHER_SUITE_TKIP:
- conf.conf.keylen = WLAN_KEY_LEN_TKIP;
- memcpy(conf.conf.key, status->gtk.decrypt_key, 16);
- /* leave TX MIC key zeroed, we don't use it anyway */
- memcpy(conf.conf.key +
- NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY,
- status->gtk.tkip_mic_key, 8);
- break;
- }
-
- key = ieee80211_gtk_rekey_add(vif, &conf.conf);
- if (IS_ERR(key))
- return false;
- iwl_mvm_set_key_rx_seq(key, status);
- }
-
- if (status->num_of_gtk_rekeys) {
- __be64 replay_ctr =
- cpu_to_be64(le64_to_cpu(status->replay_ctr));
- ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid,
- (void *)&replay_ctr, GFP_KERNEL);
- }
-
-out:
- mvmvif->seqno_valid = true;
- /* +0x10 because the set API expects next-to-use, not last-used */
- mvmvif->seqno = le16_to_cpu(status->non_qos_seq_ctr) + 0x10;
-
- return true;
-}
-
-static struct iwl_wowlan_status *
-iwl_mvm_get_wakeup_status(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
-{
- u32 base = mvm->error_event_table;
- struct error_table_start {
- /* cf. struct iwl_error_event_table */
- u32 valid;
- u32 error_id;
- } err_info;
- struct iwl_host_cmd cmd = {
- .id = WOWLAN_GET_STATUSES,
- .flags = CMD_WANT_SKB,
- };
- struct iwl_wowlan_status *status, *fw_status;
- int ret, len, status_size;
-
- iwl_trans_read_mem_bytes(mvm->trans, base,
- &err_info, sizeof(err_info));
-
- if (err_info.valid) {
- IWL_INFO(mvm, "error table is valid (%d) with error (%d)\n",
- err_info.valid, err_info.error_id);
- if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) {
- struct cfg80211_wowlan_wakeup wakeup = {
- .rfkill_release = true,
- };
- ieee80211_report_wowlan_wakeup(vif, &wakeup,
- GFP_KERNEL);
- }
- return ERR_PTR(-EIO);
- }
-
- /* only for tracing for now */
- ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, 0, 0, NULL);
- if (ret)
- IWL_ERR(mvm, "failed to query offload statistics (%d)\n", ret);
-
- ret = iwl_mvm_send_cmd(mvm, &cmd);
- if (ret) {
- IWL_ERR(mvm, "failed to query status (%d)\n", ret);
- return ERR_PTR(ret);
- }
-
- /* RF-kill already asserted again... */
- if (!cmd.resp_pkt) {
- fw_status = ERR_PTR(-ERFKILL);
- goto out_free_resp;
- }
-
- status_size = sizeof(*fw_status);
-
- len = iwl_rx_packet_payload_len(cmd.resp_pkt);
- if (len < status_size) {
- IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
- fw_status = ERR_PTR(-EIO);
- goto out_free_resp;
- }
-
- status = (void *)cmd.resp_pkt->data;
- if (len != (status_size +
- ALIGN(le32_to_cpu(status->wake_packet_bufsize), 4))) {
- IWL_ERR(mvm, "Invalid WoWLAN status response!\n");
- fw_status = ERR_PTR(-EIO);
- goto out_free_resp;
- }
-
- fw_status = kmemdup(status, len, GFP_KERNEL);
-
-out_free_resp:
- iwl_free_resp(&cmd);
- return fw_status;
-}
-
-/* releases the MVM mutex */
-static bool iwl_mvm_query_wakeup_reasons(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif)
-{
- struct iwl_wowlan_status_data status;
- struct iwl_wowlan_status *fw_status;
- int i;
- bool keep;
- struct ieee80211_sta *ap_sta;
- struct iwl_mvm_sta *mvm_ap_sta;
-
- fw_status = iwl_mvm_get_wakeup_status(mvm, vif);
- if (IS_ERR_OR_NULL(fw_status))
- goto out_unlock;
-
- status.pattern_number = le16_to_cpu(fw_status->pattern_number);
- for (i = 0; i < 8; i++)
- status.qos_seq_ctr[i] =
- le16_to_cpu(fw_status->qos_seq_ctr[i]);
- status.wakeup_reasons = le32_to_cpu(fw_status->wakeup_reasons);
- status.wake_packet_length =
- le32_to_cpu(fw_status->wake_packet_length);
- status.wake_packet_bufsize =
- le32_to_cpu(fw_status->wake_packet_bufsize);
- status.wake_packet = fw_status->wake_packet;
-
- /* still at hard-coded place 0 for D3 image */
- ap_sta = rcu_dereference_protected(
- mvm->fw_id_to_mac_id[0],
- lockdep_is_held(&mvm->mutex));
- if (IS_ERR_OR_NULL(ap_sta))
- goto out_free;
-
- mvm_ap_sta = iwl_mvm_sta_from_mac80211(ap_sta);
- for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
- u16 seq = status.qos_seq_ctr[i];
- /* firmware stores last-used value, we store next value */
- seq += 0x10;
- mvm_ap_sta->tid_data[i].seq_number = seq;
- }
-
- /* now we have all the data we need, unlock to avoid mac80211 issues */
- mutex_unlock(&mvm->mutex);
-
- iwl_mvm_report_wakeup_reasons(mvm, vif, &status);
-
- keep = iwl_mvm_setup_connection_keep(mvm, vif, fw_status);
-
- kfree(fw_status);
- return keep;
-
-out_free:
- kfree(fw_status);
-out_unlock:
- mutex_unlock(&mvm->mutex);
- return false;
-}
-
-struct iwl_mvm_nd_query_results {
- u32 matched_profiles;
- struct iwl_scan_offload_profile_match matches[IWL_SCAN_MAX_PROFILES];
-};
-
-static int
-iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm,
- struct iwl_mvm_nd_query_results *results)
-{
- struct iwl_scan_offload_profiles_query *query;
- struct iwl_host_cmd cmd = {
- .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD,
- .flags = CMD_WANT_SKB,
- };
- int ret, len;
-
- ret = iwl_mvm_send_cmd(mvm, &cmd);
- if (ret) {
- IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret);
- return ret;
- }
-
- /* RF-kill already asserted again... */
- if (!cmd.resp_pkt) {
- ret = -ERFKILL;
- goto out_free_resp;
- }
-
- len = iwl_rx_packet_payload_len(cmd.resp_pkt);
- if (len < sizeof(*query)) {
- IWL_ERR(mvm, "Invalid scan offload profiles query response!\n");
- ret = -EIO;
- goto out_free_resp;
- }
-
- query = (void *)cmd.resp_pkt->data;
-
- results->matched_profiles = le32_to_cpu(query->matched_profiles);
- memcpy(results->matches, query->matches, sizeof(results->matches));
-
-#ifdef CONFIG_IWLWIFI_DEBUGFS
- mvm->last_netdetect_scans = le32_to_cpu(query->n_scans_done);
-#endif
-
-out_free_resp:
- iwl_free_resp(&cmd);
- return ret;
-}
-
-static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm,
- struct ieee80211_vif *vif)
-{
- struct cfg80211_wowlan_nd_info *net_detect = NULL;
- struct cfg80211_wowlan_wakeup wakeup = {
- .pattern_idx = -1,
- };
- struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup;
- struct iwl_mvm_nd_query_results query;
- struct iwl_wowlan_status *fw_status;
- unsigned long matched_profiles;
- u32 reasons = 0;
- int i, j, n_matches, ret;
-
- fw_status = iwl_mvm_get_wakeup_status(mvm, vif);
- if (!IS_ERR_OR_NULL(fw_status)) {
- reasons = le32_to_cpu(fw_status->wakeup_reasons);
- kfree(fw_status);
- }
-
- if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED)
- wakeup.rfkill_release = true;
-
- if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS)
- goto out;
-
- ret = iwl_mvm_netdetect_query_results(mvm, &query);
- if (ret || !query.matched_profiles) {
- wakeup_report = NULL;
- goto out;
- }
-
- matched_profiles = query.matched_profiles;
- if (mvm->n_nd_match_sets) {
- n_matches = hweight_long(matched_profiles);
- } else {
- IWL_ERR(mvm, "no net detect match information available\n");
- n_matches = 0;
- }
-
- net_detect = kzalloc(sizeof(*net_detect) +
- (n_matches * sizeof(net_detect->matches[0])),
- GFP_KERNEL);
- if (!net_detect || !n_matches)
- goto out_report_nd;
-
- for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) {
- struct iwl_scan_offload_profile_match *fw_match;
- struct cfg80211_wowlan_nd_match *match;
- int idx, n_channels = 0;
-
- fw_match = &query.matches[i];
-
- for (j = 0; j < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; j++)
- n_channels += hweight8(fw_match->matching_channels[j]);
-
- match = kzalloc(sizeof(*match) +
- (n_channels * sizeof(*match->channels)),
- GFP_KERNEL);
- if (!match)
- goto out_report_nd;
-
- net_detect->matches[net_detect->n_matches++] = match;
-
- /* We inverted the order of the SSIDs in the scan
- * request, so invert the index here.
- */
- idx = mvm->n_nd_match_sets - i - 1;
- match->ssid.ssid_len = mvm->nd_match_sets[idx].ssid.ssid_len;
- memcpy(match->ssid.ssid, mvm->nd_match_sets[idx].ssid.ssid,
- match->ssid.ssid_len);
-
- if (mvm->n_nd_channels < n_channels)
- continue;
-
- for (j = 0; j < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; j++)
- if (fw_match->matching_channels[j / 8] & (BIT(j % 8)))
- match->channels[match->n_channels++] =
- mvm->nd_channels[j]->center_freq;
- }
-
-out_report_nd:
- wakeup.net_detect = net_detect;
-out:
- iwl_mvm_free_nd(mvm);
-
- mutex_unlock(&mvm->mutex);
- ieee80211_report_wowlan_wakeup(vif, wakeup_report, GFP_KERNEL);
-
- if (net_detect) {
- for (i = 0; i < net_detect->n_matches; i++)
- kfree(net_detect->matches[i]);
- kfree(net_detect);
- }
-}
-
-static void iwl_mvm_read_d3_sram(struct iwl_mvm *mvm)
-{
-#ifdef CONFIG_IWLWIFI_DEBUGFS
- const struct fw_img *img = &mvm->fw->img[IWL_UCODE_WOWLAN];
- u32 len = img->sec[IWL_UCODE_SECTION_DATA].len;
- u32 offs = img->sec[IWL_UCODE_SECTION_DATA].offset;
-
- if (!mvm->store_d3_resume_sram)
- return;
-
- if (!mvm->d3_resume_sram) {
- mvm->d3_resume_sram = kzalloc(len, GFP_KERNEL);
- if (!mvm->d3_resume_sram)
- return;
- }
-
- iwl_trans_read_mem_bytes(mvm->trans, offs, mvm->d3_resume_sram, len);
-#endif
-}
-
-static void iwl_mvm_d3_disconnect_iter(void *data, u8 *mac,
- struct ieee80211_vif *vif)
-{
- /* skip the one we keep connection on */
- if (data == vif)
- return;
-
- if (vif->type == NL80211_IFTYPE_STATION)
- ieee80211_resume_disconnect(vif);
-}
-
-static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
-{
- struct ieee80211_vif *vif = NULL;
- int ret;
- enum iwl_d3_status d3_status;
- bool keep = false;
-
- mutex_lock(&mvm->mutex);
-
- /* get the BSS vif pointer again */
- vif = iwl_mvm_get_bss_vif(mvm);
- if (IS_ERR_OR_NULL(vif))
- goto err;
-
- ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test);
- if (ret)
- goto err;
-
- if (d3_status != IWL_D3_STATUS_ALIVE) {
- IWL_INFO(mvm, "Device was reset during suspend\n");
- goto err;
- }
-
- /* query SRAM first in case we want event logging */
- iwl_mvm_read_d3_sram(mvm);
-
- /*
- * Query the current location and source from the D3 firmware so we
- * can play it back when we re-intiailize the D0 firmware
- */
- iwl_mvm_update_changed_regdom(mvm);
-
- if (mvm->net_detect) {
- iwl_mvm_query_netdetect_reasons(mvm, vif);
- /* has unlocked the mutex, so skip that */
- goto out;
- } else {
- keep = iwl_mvm_query_wakeup_reasons(mvm, vif);
-#ifdef CONFIG_IWLWIFI_DEBUGFS
- if (keep)
- mvm->keep_vif = vif;
-#endif
- /* has unlocked the mutex, so skip that */
- goto out_iterate;
- }
-
-err:
- iwl_mvm_free_nd(mvm);
- mutex_unlock(&mvm->mutex);
-
-out_iterate:
- if (!test)
- ieee80211_iterate_active_interfaces_rtnl(mvm->hw,
- IEEE80211_IFACE_ITER_NORMAL,
- iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);
-
-out:
- /* return 1 to reconfigure the device */
- set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
- set_bit(IWL_MVM_STATUS_D3_RECONFIG, &mvm->status);
-
- /* We always return 1, which causes mac80211 to do a reconfig
- * with IEEE80211_RECONFIG_TYPE_RESTART. This type of
- * reconfig calls iwl_mvm_restart_complete(), where we unref
- * the IWL_MVM_REF_UCODE_DOWN, so we need to take the
- * reference here.
- */
- iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
- return 1;
-}
-
-static int iwl_mvm_resume_d3(struct iwl_mvm *mvm)
-{
- iwl_trans_resume(mvm->trans);
-
- return __iwl_mvm_resume(mvm, false);
-}
-
-static int iwl_mvm_resume_d0i3(struct iwl_mvm *mvm)
-{
- bool exit_now;
- enum iwl_d3_status d3_status;
-
- iwl_trans_d3_resume(mvm->trans, &d3_status, false);
-
- /*
- * make sure to clear D0I3_DEFER_WAKEUP before
- * calling iwl_trans_resume(), which might wait
- * for d0i3 exit completion.
- */
- mutex_lock(&mvm->d0i3_suspend_mutex);
- __clear_bit(D0I3_DEFER_WAKEUP, &mvm->d0i3_suspend_flags);
- exit_now = __test_and_clear_bit(D0I3_PENDING_WAKEUP,
- &mvm->d0i3_suspend_flags);
- mutex_unlock(&mvm->d0i3_suspend_mutex);
- if (exit_now) {
- IWL_DEBUG_RPM(mvm, "Run deferred d0i3 exit\n");
- _iwl_mvm_exit_d0i3(mvm);
- }
-
- iwl_trans_resume(mvm->trans);
-
- if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND) {
- int ret = iwl_mvm_exit_d0i3(mvm->hw->priv);
-
- if (ret)
- return ret;
- /*
- * d0i3 exit will be deferred until reconfig_complete.
- * make sure there we are out of d0i3.
- */
- }
- return 0;
-}
-
-int iwl_mvm_resume(struct ieee80211_hw *hw)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- /* 'any' trigger means d0i3 was used */
- if (hw->wiphy->wowlan_config->any)
- return iwl_mvm_resume_d0i3(mvm);
- else
- return iwl_mvm_resume_d3(mvm);
-}
-
-void iwl_mvm_set_wakeup(struct ieee80211_hw *hw, bool enabled)
-{
- struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
-
- device_set_wakeup_enable(mvm->trans->dev, enabled);
-}
-
-#ifdef CONFIG_IWLWIFI_DEBUGFS
-static int iwl_mvm_d3_test_open(struct inode *inode, struct file *file)
-{
- struct iwl_mvm *mvm = inode->i_private;
- int err;
-
- if (mvm->d3_test_active)
- return -EBUSY;
-
- file->private_data = inode->i_private;
-
- ieee80211_stop_queues(mvm->hw);
- synchronize_net();
-
- /* start pseudo D3 */
- rtnl_lock();
- err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true);
- rtnl_unlock();
- if (err > 0)
- err = -EINVAL;
- if (err) {
- ieee80211_wake_queues(mvm->hw);
- return err;
- }
- mvm->d3_test_active = true;
- mvm->keep_vif = NULL;
- return 0;
-}
-
-static ssize_t iwl_mvm_d3_test_read(struct file *file, char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- struct iwl_mvm *mvm = file->private_data;
- u32 pme_asserted;
-
- while (true) {
- /* read pme_ptr if available */
- if (mvm->d3_test_pme_ptr) {
- pme_asserted = iwl_trans_read_mem32(mvm->trans,
- mvm->d3_test_pme_ptr);
- if (pme_asserted)
- break;
- }
-
- if (msleep_interruptible(100))
- break;
- }
-
- return 0;
-}
-
-static void iwl_mvm_d3_test_disconn_work_iter(void *_data, u8 *mac,
- struct ieee80211_vif *vif)
-{
- /* skip the one we keep connection on */
- if (_data == vif)
- return;
-
- if (vif->type == NL80211_IFTYPE_STATION)
- ieee80211_connection_loss(vif);
-}
-
-static int iwl_mvm_d3_test_release(struct inode *inode, struct file *file)
-{
- struct iwl_mvm *mvm = inode->i_private;
- int remaining_time = 10;
-
- mvm->d3_test_active = false;
- rtnl_lock();
- __iwl_mvm_resume(mvm, true);
- rtnl_unlock();
- iwl_abort_notification_waits(&mvm->notif_wait);
- ieee80211_restart_hw(mvm->hw);
-
- /* wait for restart and disconnect all interfaces */
- while (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) &&
- remaining_time > 0) {
- remaining_time--;
- msleep(1000);
- }
-
- if (remaining_time == 0)
- IWL_ERR(mvm, "Timed out waiting for HW restart to finish!\n");
-
- ieee80211_iterate_active_interfaces_atomic(
- mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
- iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif);
-
- ieee80211_wake_queues(mvm->hw);
-
- return 0;
-}
-
-const struct file_operations iwl_dbgfs_d3_test_ops = {
- .llseek = no_llseek,
- .open = iwl_mvm_d3_test_open,
- .read = iwl_mvm_d3_test_read,
- .release = iwl_mvm_d3_test_release,
-};
-#endif
projects / cascardo / linux.git / blobdiff