linux-yocto - Yocto Linux Embedded kernel

Age	Commit message (Expand)	Author
2017-11-02	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	Greg Kroah-Hartman
2017-05-14	scripts: Switch to more portable Perl shebang	Kamil Rytarowski
2016-05-24	headers_check: don't warn about c++ guards	Arnd Bergmann
2014-08-20	kbuild: Make scripts executable	Michal Marek
2014-01-23	headers_check: special case seqbuf_dump()	Paul Bolle
2012-03-26	headers_check: recursively search for linux/types.h inclusion	Bobby Powers
2010-12-14	headers_check: Fix warning text	akpm@linux-foundation.org
2010-12-14	headers_check: better search for functions in headers	akpm@linux-foundation.org
2010-03-07	headers_check: fix perl warnings	Stephen Hemminger
2009-06-09	kbuild/headers_check: refine extern check	Amerigo Wang
2009-06-09	scripts/headers_check.pl: correct RE in header CONFIG leak check	Robert P. J. Day
2009-01-31	kbuild: drop check for CONFIG_ in headers_check	Sam Ravnborg
2009-01-02	kbuild: ignore a few files in headers_check	Sam Ravnborg
2009-01-02	kbuild: add checks for include of linux/types in userspace headers	Sam Ravnborg
2009-01-02	kbuild: check for leaked CONFIG_ symbols to userspace	Sam Ravnborg
2009-01-02	headers_check.pl: disallow extern's	Mike Frysinger
2008-10-29	Fix incompatibility with versions of Perl less than 5.6.0	Jeremy Huntwork
2008-07-25	kbuild: optimize headers_* targets	Sam Ravnborg

/****************************************************************************** * * 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), &quota_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; 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_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, &gtkdata); /* 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, &gtkdata); 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