| /****************************************************************************** |
| * |
| * 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) { |
| u8 *pn = seq.ccmp.pn; |
| |
| aes_sc = data->rsc_tsc->all_tsc_rsc.aes.unicast_rsc; |
| aes_tx_sc = &data->rsc_tsc->all_tsc_rsc.aes.tsc; |
| |
| ieee80211_get_key_tx_seq(key, &seq); |
| aes_tx_sc->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)); |
| } 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->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_cancel_scan(mvm); |
| |
| 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 CPTCFG_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 CPTCFG_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 u8 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); |
| |
| iwl_trans_suspend(mvm->trans); |
| if (wowlan->any) { |
| /* 'any' trigger means d0i3 usage */ |
| if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND) { |
| int 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); |
| 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_aes_sc_to_seq(&sc->aes.tsc, &seq); |
| iwl_mvm_set_aes_rx_seq(sc->aes.unicast_rsc, key); |
| 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); |
| break; |
| } |
| ieee80211_set_key_tx_seq(key, &seq); |
| |
| /* 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 CPTCFG_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 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; |
| |
| match->ssid.ssid_len = mvm->nd_match_sets[i].ssid.ssid_len; |
| memcpy(match->ssid.ssid, mvm->nd_match_sets[i].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 CPTCFG_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 CPTCFG_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; |
| } |
| |
| int iwl_mvm_resume(struct ieee80211_hw *hw) |
| { |
| struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); |
| |
| iwl_trans_resume(mvm->trans); |
| |
| if (mvm->hw->wiphy->wowlan_config->any) { |
| /* 'any' trigger means d0i3 usage */ |
| if (mvm->trans->d0i3_mode == IWL_D0I3_MODE_ON_SUSPEND) { |
| int ret = iwl_mvm_exit_d0i3(hw->priv); |
| |
| if (ret) |
| return ret; |
| /* |
| * d0i3 exit will be deferred until reconfig_complete. |
| * make sure there we are out of d0i3. |
| */ |
| } |
| return 0; |
| } |
| |
| return __iwl_mvm_resume(mvm, false); |
| } |
| |
| 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 CPTCFG_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 |