/****************************************************************************** * * 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 - 2013 Intel Corporation. All rights reserved. * * 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 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * BSD LICENSE * * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. * 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 #include #include #include #include #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) 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 gtk_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->gtk_key_idx++; wkc.wep_key.key_offset = data->gtk_key_idx; } ret = iwl_mvm_send_cmd_pdu(mvm, WEP_KEY, CMD_SYNC, 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[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 { data->gtk_key_idx++; key->hw_key_idx = data->gtk_key_idx; 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, .flags = CMD_SYNC, }; 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; } static int iwl_mvm_send_proto_offload(struct iwl_mvm *mvm, struct ieee80211_vif *vif) { struct iwl_proto_offload_cmd cmd = {}; #if IS_ENABLED(CONFIG_IPV6) struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); int i; if (mvmvif->num_target_ipv6_addrs) { cmd.enabled |= cpu_to_le32(IWL_D3_PROTO_OFFLOAD_NS); memcpy(cmd.ndp_mac_addr, vif->addr, ETH_ALEN); } BUILD_BUG_ON(sizeof(cmd.target_ipv6_addr[i]) != sizeof(mvmvif->target_ipv6_addrs[i])); for (i = 0; i < mvmvif->num_target_ipv6_addrs; i++) memcpy(cmd.target_ipv6_addr[i], &mvmvif->target_ipv6_addrs[i], sizeof(cmd.target_ipv6_addr[i])); #endif if (vif->bss_conf.arp_addr_cnt) { cmd.enabled |= cpu_to_le32(IWL_D3_PROTO_OFFLOAD_ARP); cmd.host_ipv4_addr = vif->bss_conf.arp_addr_list[0]; memcpy(cmd.arp_mac_addr, vif->addr, ETH_ALEN); } if (!cmd.enabled) return 0; return iwl_mvm_send_cmd_pdu(mvm, PROT_OFFLOAD_CONFIG_CMD, CMD_SYNC, sizeof(cmd), &cmd); } 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 iwl_mvm *mvm, 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, }, .flags = CMD_SYNC, }; 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( mvm, 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( mvm, 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( mvm, 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( mvm, 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( mvm, 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( mvm, 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; } struct iwl_d3_iter_data { struct iwl_mvm *mvm; struct ieee80211_vif *vif; bool error; }; static void iwl_mvm_d3_iface_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) { struct iwl_d3_iter_data *data = _data; struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); if (vif->type != NL80211_IFTYPE_STATION || vif->p2p) return; if (mvmvif->ap_sta_id == IWL_MVM_STATION_COUNT) return; if (data->vif) { IWL_ERR(data->mvm, "More than one managed interface active!\n"); data->error = true; return; } data->vif = vif; } 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; /* hack */ vif->bss_conf.assoc = false; ret = iwl_mvm_mac_ctxt_add(mvm, vif); vif->bss_conf.assoc = true; 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); 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(100); quota_cmd.quotas[0].max_duration = cpu_to_le32(1000); 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, CMD_SYNC, sizeof(quota_cmd), "a_cmd); if (ret) IWL_ERR(mvm, "Failed to send quota: %d\n", ret); return 0; } int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_d3_iter_data suspend_iter_data = { .mvm = mvm, }; struct ieee80211_vif *vif; struct iwl_mvm_vif *mvmvif; struct ieee80211_sta *ap_sta; struct iwl_mvm_sta *mvm_ap_sta; struct iwl_wowlan_config_cmd wowlan_config_cmd = {}; struct iwl_wowlan_kek_kck_material_cmd kek_kck_cmd = {}; struct iwl_wowlan_tkip_params_cmd tkip_cmd = {}; struct iwl_d3_manager_config d3_cfg_cmd = { /* * 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 wowlan_key_data key_data = { .use_rsc_tsc = false, .tkip = &tkip_cmd, .use_tkip = false, }; int ret, i; u16 seq; u8 old_aux_sta_id, old_ap_sta_id = IWL_MVM_STATION_COUNT; if (WARN_ON(!wowlan)) return -EINVAL; key_data.rsc_tsc = kzalloc(sizeof(*key_data.rsc_tsc), GFP_KERNEL); if (!key_data.rsc_tsc) return -ENOMEM; mutex_lock(&mvm->mutex); old_aux_sta_id = mvm->aux_sta.sta_id; /* see if there's only a single BSS vif and it's associated */ ieee80211_iterate_active_interfaces_atomic( mvm->hw, IEEE80211_IFACE_ITER_NORMAL, iwl_mvm_d3_iface_iterator, &suspend_iter_data); if (suspend_iter_data.error || !suspend_iter_data.vif) { ret = 1; goto out_noreset; } vif = suspend_iter_data.vif; mvmvif = iwl_mvm_vif_from_mac80211(vif); 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; } mvm_ap_sta = (struct iwl_mvm_sta *)ap_sta->drv_priv; /* * The D3 firmware still hardcodes the AP station ID for the * BSS we're associated with as 0. Store the real STA ID here * and assign 0. When we leave this function, we'll restore * the original value for the resume code. */ old_ap_sta_id = mvm_ap_sta->sta_id; mvm_ap_sta->sta_id = 0; mvmvif->ap_sta_id = 0; /* TODO: wowlan_config_cmd.wowlan_ba_teardown_tids */ wowlan_config_cmd.is_11n_connection = ap_sta->ht_cap.ht_supported; /* * We know the last used seqno, and the uCode expects to know that * one, it will increment before TX. */ seq = mvm_ap_sta->last_seq_ctl & IEEE80211_SCTL_SEQ; wowlan_config_cmd.non_qos_seq = cpu_to_le16(seq); /* * For QoS counters, we store the one to use next, so subtract 0x10 * since the uCode will add 0x10 *before* using the value while we * increment after using the value (i.e. store the next value to use). */ for (i = 0; i < IWL_MAX_TID_COUNT; i++) { seq = mvm_ap_sta->tid_data[i].seq_number; seq -= 0x10; wowlan_config_cmd.qos_seq[i] = cpu_to_le16(seq); } 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); } 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; /* * The D3 firmware still hardcodes the AP station ID for the * BSS we're associated with as 0. As a result, we have to move * the auxiliary station to ID 1 so the ID 0 remains free for * the AP station for later. * We set the sta_id to 1 here, and reset it to its previous * value (that we stored above) later. */ mvm->aux_sta.sta_id = 1; ret = iwl_mvm_load_d3_fw(mvm); if (ret) goto out; ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); if (ret) goto out; 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, .flags = CMD_SYNC, .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, CMD_SYNC, 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, CMD_SYNC, sizeof(kek_kck_cmd), &kek_kck_cmd); if (ret) goto out; } } ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, CMD_SYNC, 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); if (ret) goto out; ret = iwl_mvm_send_remote_wake_cfg(mvm, vif, wowlan->tcp); if (ret) goto out; /* must be last -- this switches firmware state */ ret = iwl_mvm_send_cmd_pdu(mvm, D3_CONFIG_CMD, CMD_SYNC, sizeof(d3_cfg_cmd), &d3_cfg_cmd); if (ret) goto out; clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); iwl_trans_d3_suspend(mvm->trans); out: mvm->aux_sta.sta_id = old_aux_sta_id; mvm_ap_sta->sta_id = old_ap_sta_id; mvmvif->ap_sta_id = old_ap_sta_id; out_noreset: kfree(key_data.rsc_tsc); if (ret < 0) ieee80211_restart_hw(mvm->hw); mutex_unlock(&mvm->mutex); return ret; } static void iwl_mvm_query_wakeup_reasons(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 cfg80211_wowlan_wakeup wakeup = { .pattern_idx = -1, }; struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; struct iwl_host_cmd cmd = { .id = WOWLAN_GET_STATUSES, .flags = CMD_SYNC | CMD_WANT_SKB, }; struct iwl_wowlan_status *status; u32 reasons; int ret, len; struct sk_buff *pkt = NULL; 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)\n", err_info.valid); if (err_info.error_id == RF_KILL_INDICATOR_FOR_WOWLAN) { wakeup.rfkill_release = true; ieee80211_report_wowlan_wakeup(vif, &wakeup, GFP_KERNEL); } return; } /* only for tracing for now */ ret = iwl_mvm_send_cmd_pdu(mvm, OFFLOADS_QUERY_CMD, CMD_SYNC, 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; } /* RF-kill already asserted again... */ if (!cmd.resp_pkt) return; len = le32_to_cpu(cmd.resp_pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK; if (len - sizeof(struct iwl_cmd_header) < sizeof(*status)) { IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); goto out; } status = (void *)cmd.resp_pkt->data; if (len - sizeof(struct iwl_cmd_header) != sizeof(*status) + ALIGN(le32_to_cpu(status->wake_packet_bufsize), 4)) { IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); goto out; } reasons = le32_to_cpu(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 = le16_to_cpu(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 = le32_to_cpu(status->wake_packet_bufsize); int pktlen = le32_to_cpu(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)) { 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); out: iwl_free_resp(&cmd); } int iwl_mvm_resume(struct ieee80211_hw *hw) { struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); struct iwl_d3_iter_data resume_iter_data = { .mvm = mvm, }; struct ieee80211_vif *vif = NULL; int ret; enum iwl_d3_status d3_status; mutex_lock(&mvm->mutex); /* get the BSS vif pointer again */ ieee80211_iterate_active_interfaces_atomic( mvm->hw, IEEE80211_IFACE_ITER_NORMAL, iwl_mvm_d3_iface_iterator, &resume_iter_data); if (WARN_ON(resume_iter_data.error || !resume_iter_data.vif)) goto out_unlock; vif = resume_iter_data.vif; ret = iwl_trans_d3_resume(mvm->trans, &d3_status); if (ret) goto out_unlock; if (d3_status != IWL_D3_STATUS_ALIVE) { IWL_INFO(mvm, "Device was reset during suspend\n"); goto out_unlock; } iwl_mvm_query_wakeup_reasons(mvm, vif); out_unlock: mutex_unlock(&mvm->mutex); if (vif) ieee80211_resume_disconnect(vif); /* return 1 to reconfigure the device */ set_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status); return 1; } 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); }