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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/net/wireless/intel/iwlwifi/mvm/d3.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/d3.c')
-rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mvm/d3.c | 3155 |
1 files changed, 3155 insertions, 0 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c new file mode 100644 index 000000000..2748459d1 --- /dev/null +++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c @@ -0,0 +1,3155 @@ +// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause +/* + * Copyright (C) 2012-2014, 2018-2022 Intel Corporation + * Copyright (C) 2013-2015 Intel Mobile Communications GmbH + * Copyright (C) 2016-2017 Intel Deutschland GmbH + */ +#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" +#include "fw/img.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); + + mutex_lock(&mvm->mutex); + + mvmvif->rekey_data.kek_len = data->kek_len; + mvmvif->rekey_data.kck_len = data->kck_len; + memcpy(mvmvif->rekey_data.kek, data->kek, data->kek_len); + memcpy(mvmvif->rekey_data.kck, data->kck, data->kck_len); + mvmvif->rekey_data.akm = data->akm & 0xFF; + mvmvif->rekey_data.replay_ctr = + cpu_to_le64(be64_to_cpup((const __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; + + memset(mvmvif->tentative_addrs, 0, sizeof(mvmvif->tentative_addrs)); + + read_lock_bh(&idev->lock); + list_for_each_entry(ifa, &idev->addr_list, if_list) { + mvmvif->target_ipv6_addrs[idx] = ifa->addr; + if (ifa->flags & IFA_F_TENTATIVE) + __set_bit(idx, mvmvif->tentative_addrs); + 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]); +} + +static const u8 *iwl_mvm_find_max_pn(struct ieee80211_key_conf *key, + struct iwl_mvm_key_pn *ptk_pn, + struct ieee80211_key_seq *seq, + int tid, int queues) +{ + const u8 *ret = seq->ccmp.pn; + int i; + + /* get the PN from mac80211, used on the default queue */ + ieee80211_get_key_rx_seq(key, tid, seq); + + /* and use the internal data for the other queues */ + for (i = 1; i < queues; i++) { + const u8 *tmp = ptk_pn->q[i].pn[tid]; + + if (memcmp(ret, tmp, IEEE80211_CCMP_PN_LEN) <= 0) + ret = tmp; + } + + return ret; +} + +struct wowlan_key_reprogram_data { + bool error; + 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_reprogram_data *data = _data; + int ret; + + 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; + } + + mutex_lock(&mvm->mutex); + 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; + mutex_unlock(&mvm->mutex); + + /* don't upload key again */ + return; + } + default: + data->error = true; + return; + case WLAN_CIPHER_SUITE_BIP_GMAC_256: + case WLAN_CIPHER_SUITE_BIP_GMAC_128: + return; + 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. + */ + return; + case WLAN_CIPHER_SUITE_TKIP: + case WLAN_CIPHER_SUITE_CCMP: + case WLAN_CIPHER_SUITE_GCMP: + case WLAN_CIPHER_SUITE_GCMP_256: + break; + } + + mutex_lock(&mvm->mutex); + /* + * 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) { + mvm->ptk_ivlen = key->iv_len; + mvm->ptk_icvlen = key->icv_len; + ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 0); + } 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(). + */ + mvm->gtk_ivlen = key->iv_len; + mvm->gtk_icvlen = key->icv_len; + ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, 1); + } + mutex_unlock(&mvm->mutex); + data->error = ret != 0; +} + +struct wowlan_key_rsc_tsc_data { + struct iwl_wowlan_rsc_tsc_params_cmd_v4 *rsc_tsc; + bool have_rsc_tsc; +}; + +static void iwl_mvm_wowlan_get_rsc_tsc_data(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 wowlan_key_rsc_tsc_data *data = _data; + struct aes_sc *aes_sc; + struct tkip_sc *tkip_sc, *tkip_tx_sc = NULL; + struct ieee80211_key_seq seq; + int i; + + switch (key->cipher) { + default: + break; + case WLAN_CIPHER_SUITE_TKIP: + if (sta) { + u64 pn64; + + tkip_sc = + data->rsc_tsc->params.all_tsc_rsc.tkip.unicast_rsc; + tkip_tx_sc = + &data->rsc_tsc->params.all_tsc_rsc.tkip.tsc; + + pn64 = atomic64_read(&key->tx_pn); + tkip_tx_sc->iv16 = cpu_to_le16(TKIP_PN_TO_IV16(pn64)); + tkip_tx_sc->iv32 = cpu_to_le32(TKIP_PN_TO_IV32(pn64)); + } else { + tkip_sc = + data->rsc_tsc->params.all_tsc_rsc.tkip.multicast_rsc; + } + + /* + * 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); + } + + data->have_rsc_tsc = true; + break; + case WLAN_CIPHER_SUITE_CCMP: + case WLAN_CIPHER_SUITE_GCMP: + case WLAN_CIPHER_SUITE_GCMP_256: + if (sta) { + struct aes_sc *aes_tx_sc; + u64 pn64; + + aes_sc = + data->rsc_tsc->params.all_tsc_rsc.aes.unicast_rsc; + aes_tx_sc = + &data->rsc_tsc->params.all_tsc_rsc.aes.tsc; + + pn64 = atomic64_read(&key->tx_pn); + aes_tx_sc->pn = cpu_to_le64(pn64); + } else { + aes_sc = + data->rsc_tsc->params.all_tsc_rsc.aes.multicast_rsc; + } + + /* + * For non-QoS this relies on the fact that both the uCode and + * mac80211/our RX code use TID 0 for checking the PN. + */ + if (sta && iwl_mvm_has_new_rx_api(mvm)) { + struct iwl_mvm_sta *mvmsta; + struct iwl_mvm_key_pn *ptk_pn; + const u8 *pn; + + mvmsta = iwl_mvm_sta_from_mac80211(sta); + rcu_read_lock(); + ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); + if (WARN_ON(!ptk_pn)) { + rcu_read_unlock(); + break; + } + + for (i = 0; i < IWL_MAX_TID_COUNT; i++) { + pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, + mvm->trans->num_rx_queues); + 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)); + } + + rcu_read_unlock(); + } else { + 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->have_rsc_tsc = true; + break; + } +} + +struct wowlan_key_rsc_v5_data { + struct iwl_wowlan_rsc_tsc_params_cmd *rsc; + bool have_rsc; + int gtks; + int gtk_ids[4]; +}; + +static void iwl_mvm_wowlan_get_rsc_v5_data(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 wowlan_key_rsc_v5_data *data = _data; + struct ieee80211_key_seq seq; + __le64 *rsc; + int i; + + /* only for ciphers that can be PTK/GTK */ + switch (key->cipher) { + default: + return; + case WLAN_CIPHER_SUITE_TKIP: + case WLAN_CIPHER_SUITE_CCMP: + case WLAN_CIPHER_SUITE_GCMP: + case WLAN_CIPHER_SUITE_GCMP_256: + break; + } + + if (sta) { + rsc = data->rsc->ucast_rsc; + } else { + if (WARN_ON(data->gtks >= ARRAY_SIZE(data->gtk_ids))) + return; + data->gtk_ids[data->gtks] = key->keyidx; + rsc = data->rsc->mcast_rsc[data->gtks % 2]; + if (WARN_ON(key->keyidx >= + ARRAY_SIZE(data->rsc->mcast_key_id_map))) + return; + data->rsc->mcast_key_id_map[key->keyidx] = data->gtks % 2; + if (data->gtks >= 2) { + int prev = data->gtks - 2; + int prev_idx = data->gtk_ids[prev]; + + data->rsc->mcast_key_id_map[prev_idx] = + IWL_MCAST_KEY_MAP_INVALID; + } + data->gtks++; + } + + switch (key->cipher) { + default: + WARN_ON(1); + break; + case WLAN_CIPHER_SUITE_TKIP: + + /* + * 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_MAX_TID_COUNT; i++) { + ieee80211_get_key_rx_seq(key, i, &seq); + + rsc[i] = cpu_to_le64(((u64)seq.tkip.iv32 << 16) | + seq.tkip.iv16); + } + + data->have_rsc = true; + break; + case WLAN_CIPHER_SUITE_CCMP: + case WLAN_CIPHER_SUITE_GCMP: + case WLAN_CIPHER_SUITE_GCMP_256: + /* + * For non-QoS this relies on the fact that both the uCode and + * mac80211/our RX code use TID 0 for checking the PN. + */ + if (sta) { + struct iwl_mvm_sta *mvmsta; + struct iwl_mvm_key_pn *ptk_pn; + const u8 *pn; + + mvmsta = iwl_mvm_sta_from_mac80211(sta); + rcu_read_lock(); + ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); + if (WARN_ON(!ptk_pn)) { + rcu_read_unlock(); + break; + } + + for (i = 0; i < IWL_MAX_TID_COUNT; i++) { + pn = iwl_mvm_find_max_pn(key, ptk_pn, &seq, i, + mvm->trans->num_rx_queues); + rsc[i] = 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)); + } + + rcu_read_unlock(); + } else { + for (i = 0; i < IWL_MAX_TID_COUNT; i++) { + u8 *pn = seq.ccmp.pn; + + ieee80211_get_key_rx_seq(key, i, &seq); + rsc[i] = 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->have_rsc = true; + break; + } +} + +static int iwl_mvm_wowlan_config_rsc_tsc(struct iwl_mvm *mvm, + struct ieee80211_vif *vif) +{ + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TSC_RSC_PARAM, + IWL_FW_CMD_VER_UNKNOWN); + int ret; + + if (ver == 5) { + struct wowlan_key_rsc_v5_data data = {}; + int i; + + data.rsc = kmalloc(sizeof(*data.rsc), GFP_KERNEL); + if (!data.rsc) + return -ENOMEM; + + memset(data.rsc, 0xff, sizeof(*data.rsc)); + + for (i = 0; i < ARRAY_SIZE(data.rsc->mcast_key_id_map); i++) + data.rsc->mcast_key_id_map[i] = + IWL_MCAST_KEY_MAP_INVALID; + data.rsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id); + + ieee80211_iter_keys(mvm->hw, vif, + iwl_mvm_wowlan_get_rsc_v5_data, + &data); + + if (data.have_rsc) + ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, + CMD_ASYNC, sizeof(*data.rsc), + data.rsc); + else + ret = 0; + kfree(data.rsc); + } else if (ver == 4 || ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN) { + struct wowlan_key_rsc_tsc_data data = {}; + int size; + + data.rsc_tsc = kzalloc(sizeof(*data.rsc_tsc), GFP_KERNEL); + if (!data.rsc_tsc) + return -ENOMEM; + + if (ver == 4) { + size = sizeof(*data.rsc_tsc); + data.rsc_tsc->sta_id = cpu_to_le32(mvmvif->ap_sta_id); + } else { + /* ver == 2 || ver == IWL_FW_CMD_VER_UNKNOWN */ + size = sizeof(data.rsc_tsc->params); + } + + ieee80211_iter_keys(mvm->hw, vif, + iwl_mvm_wowlan_get_rsc_tsc_data, + &data); + + if (data.have_rsc_tsc) + ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_TSC_RSC_PARAM, + CMD_ASYNC, size, + data.rsc_tsc); + else + ret = 0; + kfree(data.rsc_tsc); + } else { + ret = 0; + WARN_ON_ONCE(1); + } + + return ret; +} + +struct wowlan_key_tkip_data { + struct iwl_wowlan_tkip_params_cmd tkip; + bool have_tkip_keys; +}; + +static void iwl_mvm_wowlan_get_tkip_data(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct ieee80211_key_conf *key, + void *_data) +{ + struct wowlan_key_tkip_data *data = _data; + 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 i; + + switch (key->cipher) { + default: + break; + case WLAN_CIPHER_SUITE_TKIP: + if (sta) { + u64 pn64; + + rx_p1ks = data->tkip.rx_uni; + + pn64 = atomic64_read(&key->tx_pn); + + ieee80211_get_tkip_p1k_iv(key, TKIP_PN_TO_IV32(pn64), + 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 { + rx_p1ks = data->tkip.rx_multi; + rx_mic_key = data->tkip.mic_keys.rx_mcast; + } + + for (i = 0; i < IWL_NUM_RSC; i++) { + ieee80211_get_key_rx_seq(key, i, &seq); + /* 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->have_tkip_keys = true; + break; + } +} + +struct wowlan_key_gtk_type_iter { + struct iwl_wowlan_kek_kck_material_cmd_v4 *kek_kck_cmd; +}; + +static void iwl_mvm_wowlan_gtk_type_iter(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct ieee80211_key_conf *key, + void *_data) +{ + struct wowlan_key_gtk_type_iter *data = _data; + + switch (key->cipher) { + default: + return; + case WLAN_CIPHER_SUITE_BIP_GMAC_256: + case WLAN_CIPHER_SUITE_BIP_GMAC_128: + data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_GCMP); + return; + case WLAN_CIPHER_SUITE_AES_CMAC: + data->kek_kck_cmd->igtk_cipher = cpu_to_le32(STA_KEY_FLG_CCM); + return; + case WLAN_CIPHER_SUITE_CCMP: + if (!sta) + data->kek_kck_cmd->gtk_cipher = + cpu_to_le32(STA_KEY_FLG_CCM); + break; + case WLAN_CIPHER_SUITE_GCMP: + case WLAN_CIPHER_SUITE_GCMP_256: + if (!sta) + data->kek_kck_cmd->gtk_cipher = + cpu_to_le32(STA_KEY_FLG_GCMP); + break; + } +} + +static int iwl_mvm_send_patterns_v1(struct iwl_mvm *mvm, + struct cfg80211_wowlan *wowlan) +{ + struct iwl_wowlan_patterns_cmd_v1 *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] = struct_size(pattern_cmd, patterns, wowlan->n_patterns); + + 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_patterns(struct iwl_mvm *mvm, + struct ieee80211_vif *vif, + struct cfg80211_wowlan *wowlan) +{ + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + struct iwl_wowlan_patterns_cmd *pattern_cmd; + struct iwl_host_cmd cmd = { + .id = WOWLAN_PATTERNS, + .dataflags[0] = IWL_HCMD_DFL_NOCOPY, + }; + int i, err; + int ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, + IWL_FW_CMD_VER_UNKNOWN); + + if (!wowlan->n_patterns) + return 0; + + cmd.len[0] = sizeof(*pattern_cmd) + + wowlan->n_patterns * sizeof(struct iwl_wowlan_pattern_v2); + + pattern_cmd = kzalloc(cmd.len[0], GFP_KERNEL); + if (!pattern_cmd) + return -ENOMEM; + + pattern_cmd->n_patterns = wowlan->n_patterns; + if (ver >= 3) + pattern_cmd->sta_id = mvmvif->ap_sta_id; + + for (i = 0; i < wowlan->n_patterns; i++) { + int mask_len = DIV_ROUND_UP(wowlan->patterns[i].pattern_len, 8); + + pattern_cmd->patterns[i].pattern_type = + WOWLAN_PATTERN_TYPE_BITMASK; + + memcpy(&pattern_cmd->patterns[i].u.bitmask.mask, + wowlan->patterns[i].mask, mask_len); + memcpy(&pattern_cmd->patterns[i].u.bitmask.pattern, + wowlan->patterns[i].pattern, + wowlan->patterns[i].pattern_len); + pattern_cmd->patterns[i].u.bitmask.mask_size = mask_len; + pattern_cmd->patterns[i].u.bitmask.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_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_v1 binding_cmd = {}; + struct iwl_time_quota_cmd quota_cmd = {}; + struct iwl_time_quota_data *quota; + u32 status; + + if (WARN_ON_ONCE(iwl_mvm_is_cdb_supported(mvm))) + return -EINVAL; + + /* add back the PHY */ + if (WARN_ON(!mvmvif->phy_ctxt)) + return -EINVAL; + + rcu_read_lock(); + ctx = rcu_dereference(vif->bss_conf.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->cfg.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, + IWL_BINDING_CMD_SIZE_V1, &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, 0); + 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 = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, 0); + quota->id_and_color = + cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->phy_ctxt->id, + mvmvif->phy_ctxt->color)); + quota->quota = cpu_to_le32(IWL_MVM_MAX_QUOTA); + quota->max_duration = cpu_to_le32(IWL_MVM_MAX_QUOTA); + + for (i = 1; i < MAX_BINDINGS; i++) { + quota = iwl_mvm_quota_cmd_get_quota(mvm, "a_cmd, i); + quota->id_and_color = cpu_to_le32(FW_CTXT_INVALID); + } + + ret = iwl_mvm_send_cmd_pdu(mvm, TIME_QUOTA_CMD, 0, + iwl_mvm_quota_cmd_size(mvm), "a_cmd); + if (ret) + IWL_ERR(mvm, "Failed to send quota: %d\n", ret); + + if (iwl_mvm_is_lar_supported(mvm) && iwl_mvm_init_fw_regd(mvm)) + IWL_ERR(mvm, "Failed to initialize D3 LAR information\n"); + + return 0; +} + +static int iwl_mvm_get_last_nonqos_seq(struct iwl_mvm *mvm, + struct ieee80211_vif *vif) +{ + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + struct iwl_nonqos_seq_query_cmd query_cmd = { + .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_GET), + .mac_id_n_color = + cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, + mvmvif->color)), + }; + struct iwl_host_cmd cmd = { + .id = NON_QOS_TX_COUNTER_CMD, + .flags = CMD_WANT_SKB, + }; + int err; + u32 size; + + cmd.data[0] = &query_cmd; + cmd.len[0] = sizeof(query_cmd); + + err = iwl_mvm_send_cmd(mvm, &cmd); + if (err) + return err; + + size = iwl_rx_packet_payload_len(cmd.resp_pkt); + if (size < sizeof(__le16)) { + err = -EINVAL; + } else { + err = le16_to_cpup((__le16 *)cmd.resp_pkt->data); + /* firmware returns next, not last-used seqno */ + err = (u16) (err - 0x10); + } + + iwl_free_resp(&cmd); + return err; +} + +void iwl_mvm_set_last_nonqos_seq(struct iwl_mvm *mvm, struct ieee80211_vif *vif) +{ + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + struct iwl_nonqos_seq_query_cmd query_cmd = { + .get_set_flag = cpu_to_le32(IWL_NONQOS_SEQ_SET), + .mac_id_n_color = + cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, + mvmvif->color)), + .value = cpu_to_le16(mvmvif->seqno), + }; + + /* return if called during restart, not resume from D3 */ + if (!mvmvif->seqno_valid) + return; + + mvmvif->seqno_valid = false; + + if (iwl_mvm_send_cmd_pdu(mvm, NON_QOS_TX_COUNTER_CMD, 0, + sizeof(query_cmd), &query_cmd)) + IWL_ERR(mvm, "failed to set non-QoS seqno\n"); +} + +static int iwl_mvm_switch_to_d3(struct iwl_mvm *mvm) +{ + iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true); + + iwl_mvm_stop_device(mvm); + /* + * 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); + + /* the fw is reset, so all the keys are cleared */ + 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) +{ + 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->deflink.ht_cap.ht_supported; + wowlan_config_cmd->flags = ENABLE_L3_FILTERING | + ENABLE_NBNS_FILTERING | ENABLE_DHCP_FILTERING; + + if (iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_CONFIGURATION, 0) < 6) { + /* Query the last used seqno and set it */ + int 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); + } + + if (wowlan->any) { + wowlan_config_cmd->wakeup_filter |= + cpu_to_le32(IWL_WOWLAN_WAKEUP_BEACON_MISS | + IWL_WOWLAN_WAKEUP_LINK_CHANGE | + IWL_WOWLAN_WAKEUP_RX_FRAME | + IWL_WOWLAN_WAKEUP_BCN_FILTERING); + } + + return 0; +} + +static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, + struct ieee80211_vif *vif) +{ + bool unified = fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); + struct wowlan_key_reprogram_data key_data = {}; + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + int ret; + u8 cmd_ver; + size_t cmd_size; + + if (!unified) { + /* + * if we have to configure keys, call ieee80211_iter_keys(), + * as we need non-atomic context in order to take the + * required locks. + */ + /* + * Note that currently we don't use CMD_ASYNC in the iterator. + * In case of key_data.configure_keys, all the configured + * commands are SYNC, and iwl_mvm_wowlan_program_keys() will + * take care of locking/unlocking mvm->mutex. + */ + ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_program_keys, + &key_data); + + if (key_data.error) + return -EIO; + } + + ret = iwl_mvm_wowlan_config_rsc_tsc(mvm, vif); + if (ret) + return ret; + + if (!fw_has_api(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_API_TKIP_MIC_KEYS)) { + int ver = iwl_fw_lookup_cmd_ver(mvm->fw, WOWLAN_TKIP_PARAM, + IWL_FW_CMD_VER_UNKNOWN); + struct wowlan_key_tkip_data tkip_data = {}; + int size; + + if (ver == 2) { + size = sizeof(tkip_data.tkip); + tkip_data.tkip.sta_id = + cpu_to_le32(mvmvif->ap_sta_id); + } else if (ver == 1 || ver == IWL_FW_CMD_VER_UNKNOWN) { + size = sizeof(struct iwl_wowlan_tkip_params_cmd_ver_1); + } else { + WARN_ON_ONCE(1); + return -EINVAL; + } + + ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_get_tkip_data, + &tkip_data); + + if (tkip_data.have_tkip_keys) { + /* send relevant data according to CMD version */ + ret = iwl_mvm_send_cmd_pdu(mvm, + WOWLAN_TKIP_PARAM, + CMD_ASYNC, size, + &tkip_data.tkip); + if (ret) + return ret; + } + } + + /* configure rekey data only if offloaded rekey is supported (d3) */ + if (mvmvif->rekey_data.valid) { + struct iwl_wowlan_kek_kck_material_cmd_v4 kek_kck_cmd = {}; + struct iwl_wowlan_kek_kck_material_cmd_v4 *_kek_kck_cmd = + &kek_kck_cmd; + struct wowlan_key_gtk_type_iter gtk_type_data = { + .kek_kck_cmd = _kek_kck_cmd, + }; + + cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, + WOWLAN_KEK_KCK_MATERIAL, + IWL_FW_CMD_VER_UNKNOWN); + if (WARN_ON(cmd_ver != 2 && cmd_ver != 3 && cmd_ver != 4 && + cmd_ver != IWL_FW_CMD_VER_UNKNOWN)) + return -EINVAL; + + ieee80211_iter_keys(mvm->hw, vif, iwl_mvm_wowlan_gtk_type_iter, + >k_type_data); + + memcpy(kek_kck_cmd.kck, mvmvif->rekey_data.kck, + mvmvif->rekey_data.kck_len); + kek_kck_cmd.kck_len = cpu_to_le16(mvmvif->rekey_data.kck_len); + memcpy(kek_kck_cmd.kek, mvmvif->rekey_data.kek, + mvmvif->rekey_data.kek_len); + kek_kck_cmd.kek_len = cpu_to_le16(mvmvif->rekey_data.kek_len); + kek_kck_cmd.replay_ctr = mvmvif->rekey_data.replay_ctr; + kek_kck_cmd.akm = cpu_to_le32(mvmvif->rekey_data.akm); + kek_kck_cmd.sta_id = cpu_to_le32(mvmvif->ap_sta_id); + + if (cmd_ver == 4) { + cmd_size = sizeof(struct iwl_wowlan_kek_kck_material_cmd_v4); + } else { + if (cmd_ver == 3) + cmd_size = + sizeof(struct iwl_wowlan_kek_kck_material_cmd_v3); + else + cmd_size = + sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); + /* skip the sta_id at the beginning */ + _kek_kck_cmd = (void *) + ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id)); + } + + IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", + mvmvif->rekey_data.akm); + + ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_KEK_KCK_MATERIAL, + CMD_ASYNC, cmd_size, _kek_kck_cmd); + if (ret) + return ret; + } + + 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) +{ + int ret; + bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); + + mvm->offload_tid = wowlan_config_cmd->offloading_tid; + + if (!unified_image) { + ret = iwl_mvm_switch_to_d3(mvm); + if (ret) + return ret; + + ret = iwl_mvm_d3_reprogram(mvm, vif, ap_sta); + if (ret) + return ret; + } + + /* + * 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); + ret = iwl_mvm_wowlan_config_key_params(mvm, vif); + mutex_lock(&mvm->mutex); + if (ret) + return ret; + + ret = iwl_mvm_send_cmd_pdu(mvm, WOWLAN_CONFIGURATION, 0, + sizeof(*wowlan_config_cmd), + wowlan_config_cmd); + if (ret) + return ret; + + if (fw_has_api(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_API_WOWLAN_TCP_SYN_WAKE)) + ret = iwl_mvm_send_patterns(mvm, vif, wowlan); + else + ret = iwl_mvm_send_patterns_v1(mvm, wowlan); + if (ret) + return ret; + + return iwl_mvm_send_proto_offload(mvm, vif, false, true, 0); +} + +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) +{ + int ret; + bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); + + if (!unified_image) { + ret = iwl_mvm_switch_to_d3(mvm); + if (ret) + return ret; + } else { + /* In theory, we wouldn't have to stop a running sched + * scan in order to start another one (for + * net-detect). But in practice this doesn't seem to + * work properly, so stop any running sched_scan now. + */ + ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true); + 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 | CMD_SEND_IN_D3, + .data[0] = &d3_cfg_cmd_data, + .len[0] = sizeof(d3_cfg_cmd_data), + }; + int ret; + int len __maybe_unused; + bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); + + 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); + + set_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); + + synchronize_net(); + + 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_INVALID_STA) { + /* if we're not associated, this must be netdetect */ + if (!wowlan->nd_config) { + ret = 1; + goto out_noreset; + } + + ret = iwl_mvm_netdetect_config( + mvm, wowlan, wowlan->nd_config, vif); + if (ret) + goto out; + + mvm->net_detect = true; + } else { + struct iwl_wowlan_config_cmd wowlan_config_cmd = {}; + + wowlan_config_cmd.sta_id = mvmvif->ap_sta_id; + + 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 + + /* + * Prior to 9000 device family the driver needs to stop the dbg + * recording before entering D3. In later devices the FW stops the + * recording automatically. + */ + if (mvm->trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_9000) + iwl_fw_dbg_stop_restart_recording(&mvm->fwrt, NULL, true); + + mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_D3; + + /* 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); + + ret = iwl_trans_d3_suspend(mvm->trans, test, !unified_image); + out: + if (ret < 0) { + iwl_mvm_free_nd(mvm); + + if (!unified_image) { + if (mvm->fw_restart > 0) { + mvm->fw_restart--; + ieee80211_restart_hw(mvm->hw); + } + } + + clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); + } + out_noreset: + mutex_unlock(&mvm->mutex); + + return ret; +} + +int iwl_mvm_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan) +{ + struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); + + iwl_mvm_pause_tcm(mvm, true); + + iwl_fw_runtime_suspend(&mvm->fwrt); + + return __iwl_mvm_suspend(hw, wowlan, false); +} + +/* converted data from the different status responses */ +struct iwl_wowlan_status_data { + u64 replay_ctr; + u32 num_of_gtk_rekeys; + u32 received_beacons; + u32 wakeup_reasons; + u32 wake_packet_length; + u32 wake_packet_bufsize; + u16 pattern_number; + u16 non_qos_seq_ctr; + u16 qos_seq_ctr[8]; + u8 tid_tear_down; + + struct { + /* including RX MIC key for TKIP */ + u8 key[WOWLAN_KEY_MAX_SIZE]; + u8 len; + u8 flags; + } gtk; + + struct { + /* + * We store both the TKIP and AES representations + * coming from the firmware because we decode the + * data from there before we iterate the keys and + * know which one we need. + */ + struct { + struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; + } tkip, aes; + + /* + * We use -1 for when we have valid data but don't know + * the key ID from firmware, and thus it needs to be + * installed with the last key (depending on rekeying). + */ + s8 key_id; + bool valid; + } gtk_seq[2]; + + struct { + /* Same as above */ + struct { + struct ieee80211_key_seq seq[IWL_MAX_TID_COUNT]; + u64 tx_pn; + } tkip, aes; + } ptk; + + struct { + u64 ipn; + u8 key[WOWLAN_KEY_MAX_SIZE]; + u8 len; + u8 flags; + } igtk; + + 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; + } + + pm_wakeup_event(mvm->dev, 0); + + 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) { + int pktsize = status->wake_packet_bufsize; + int pktlen = status->wake_packet_length; + const u8 *pktdata = status->wake_packet; + const struct ieee80211_hdr *hdr = (const 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; + + skb_put_data(pkt, 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; + + skb_put_data(pkt, 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_le64_to_aes_seq(__le64 le_pn, struct ieee80211_key_seq *seq) +{ + u64 pn = le64_to_cpu(le_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_aes_sc_to_seq(struct aes_sc *sc, + struct ieee80211_key_seq *seq) +{ + iwl_mvm_le64_to_aes_seq(sc->pn, seq); +} + +static void iwl_mvm_le64_to_tkip_seq(__le64 le_pn, struct ieee80211_key_seq *seq) +{ + u64 pn = le64_to_cpu(le_pn); + + seq->tkip.iv16 = (u16)pn; + seq->tkip.iv32 = (u32)(pn >> 16); +} + +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_key_rx_seq_tids(struct ieee80211_key_conf *key, + struct ieee80211_key_seq *seq) +{ + int tid; + + for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) + ieee80211_set_key_rx_seq(key, tid, &seq[tid]); +} + +static void iwl_mvm_set_aes_ptk_rx_seq(struct iwl_mvm *mvm, + struct iwl_wowlan_status_data *status, + struct ieee80211_sta *sta, + struct ieee80211_key_conf *key) +{ + struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta); + struct iwl_mvm_key_pn *ptk_pn; + int tid; + + iwl_mvm_set_key_rx_seq_tids(key, status->ptk.aes.seq); + + if (!iwl_mvm_has_new_rx_api(mvm)) + return; + + + rcu_read_lock(); + ptk_pn = rcu_dereference(mvmsta->ptk_pn[key->keyidx]); + if (WARN_ON(!ptk_pn)) { + rcu_read_unlock(); + return; + } + + for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { + int i; + + for (i = 1; i < mvm->trans->num_rx_queues; i++) + memcpy(ptk_pn->q[i].pn[tid], + status->ptk.aes.seq[tid].ccmp.pn, + IEEE80211_CCMP_PN_LEN); + } + rcu_read_unlock(); +} + +static void iwl_mvm_convert_key_counters(struct iwl_wowlan_status_data *status, + union iwl_all_tsc_rsc *sc) +{ + int i; + + BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); + BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); + + /* GTK RX counters */ + for (i = 0; i < IWL_MAX_TID_COUNT; i++) { + iwl_mvm_tkip_sc_to_seq(&sc->tkip.multicast_rsc[i], + &status->gtk_seq[0].tkip.seq[i]); + iwl_mvm_aes_sc_to_seq(&sc->aes.multicast_rsc[i], + &status->gtk_seq[0].aes.seq[i]); + } + status->gtk_seq[0].valid = true; + status->gtk_seq[0].key_id = -1; + + /* PTK TX counter */ + status->ptk.tkip.tx_pn = (u64)le16_to_cpu(sc->tkip.tsc.iv16) | + ((u64)le32_to_cpu(sc->tkip.tsc.iv32) << 16); + status->ptk.aes.tx_pn = le64_to_cpu(sc->aes.tsc.pn); + + /* PTK RX counters */ + for (i = 0; i < IWL_MAX_TID_COUNT; i++) { + iwl_mvm_tkip_sc_to_seq(&sc->tkip.unicast_rsc[i], + &status->ptk.tkip.seq[i]); + iwl_mvm_aes_sc_to_seq(&sc->aes.unicast_rsc[i], + &status->ptk.aes.seq[i]); + } +} + +static void +iwl_mvm_convert_key_counters_v5_gtk_seq(struct iwl_wowlan_status_data *status, + struct iwl_wowlan_all_rsc_tsc_v5 *sc, + unsigned int idx, unsigned int key_id) +{ + int tid; + + for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { + iwl_mvm_le64_to_tkip_seq(sc->mcast_rsc[idx][tid], + &status->gtk_seq[idx].tkip.seq[tid]); + iwl_mvm_le64_to_aes_seq(sc->mcast_rsc[idx][tid], + &status->gtk_seq[idx].aes.seq[tid]); + } + + status->gtk_seq[idx].valid = true; + status->gtk_seq[idx].key_id = key_id; +} + +static void +iwl_mvm_convert_key_counters_v5(struct iwl_wowlan_status_data *status, + struct iwl_wowlan_all_rsc_tsc_v5 *sc) +{ + int i, tid; + + BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_MAX_TID_COUNT); + BUILD_BUG_ON(IWL_MAX_TID_COUNT > IWL_NUM_RSC); + BUILD_BUG_ON(ARRAY_SIZE(sc->mcast_rsc) != ARRAY_SIZE(status->gtk_seq)); + + /* GTK RX counters */ + for (i = 0; i < ARRAY_SIZE(sc->mcast_key_id_map); i++) { + u8 entry = sc->mcast_key_id_map[i]; + + if (entry < ARRAY_SIZE(sc->mcast_rsc)) + iwl_mvm_convert_key_counters_v5_gtk_seq(status, sc, + entry, i); + } + + /* PTK TX counters not needed, assigned in device */ + + /* PTK RX counters */ + for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) { + iwl_mvm_le64_to_tkip_seq(sc->ucast_rsc[tid], + &status->ptk.tkip.seq[tid]); + iwl_mvm_le64_to_aes_seq(sc->ucast_rsc[tid], + &status->ptk.aes.seq[tid]); + } +} + +static void iwl_mvm_set_key_rx_seq_idx(struct ieee80211_key_conf *key, + struct iwl_wowlan_status_data *status, + int idx) +{ + switch (key->cipher) { + case WLAN_CIPHER_SUITE_CCMP: + case WLAN_CIPHER_SUITE_GCMP: + case WLAN_CIPHER_SUITE_GCMP_256: + iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].aes.seq); + break; + case WLAN_CIPHER_SUITE_TKIP: + iwl_mvm_set_key_rx_seq_tids(key, status->gtk_seq[idx].tkip.seq); + break; + default: + WARN_ON(1); + } +} + +static void iwl_mvm_set_key_rx_seq(struct ieee80211_key_conf *key, + struct iwl_wowlan_status_data *status, + bool installed) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(status->gtk_seq); i++) { + if (!status->gtk_seq[i].valid) + continue; + + /* Handle the case where we know the key ID */ + if (status->gtk_seq[i].key_id == key->keyidx) { + s8 new_key_id = -1; + + if (status->num_of_gtk_rekeys) + new_key_id = status->gtk.flags & + IWL_WOWLAN_GTK_IDX_MASK; + + /* Don't install a new key's value to an old key */ + if (new_key_id != key->keyidx) + iwl_mvm_set_key_rx_seq_idx(key, status, i); + continue; + } + + /* handle the case where we didn't, last key only */ + if (status->gtk_seq[i].key_id == -1 && + (!status->num_of_gtk_rekeys || installed)) + iwl_mvm_set_key_rx_seq_idx(key, status, i); + } +} + +struct iwl_mvm_d3_gtk_iter_data { + struct iwl_mvm *mvm; + struct iwl_wowlan_status_data *status; + void *last_gtk; + u32 cipher; + bool find_phase, unhandled_cipher; + int num_keys; +}; + +static void iwl_mvm_d3_update_keys(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; + struct iwl_wowlan_status_data *status = data->status; + + 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_GCMP: + case WLAN_CIPHER_SUITE_GCMP_256: + 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) { + if (data->find_phase) + return; + + switch (key->cipher) { + case WLAN_CIPHER_SUITE_CCMP: + case WLAN_CIPHER_SUITE_GCMP: + case WLAN_CIPHER_SUITE_GCMP_256: + atomic64_set(&key->tx_pn, status->ptk.aes.tx_pn); + iwl_mvm_set_aes_ptk_rx_seq(data->mvm, status, sta, key); + break; + case WLAN_CIPHER_SUITE_TKIP: + atomic64_set(&key->tx_pn, status->ptk.tkip.tx_pn); + iwl_mvm_set_key_rx_seq_tids(key, status->ptk.tkip.seq); + break; + } + + /* that's it for this key */ + return; + } + + if (data->find_phase) { + data->last_gtk = key; + data->cipher = key->cipher; + return; + } + + if (data->status->num_of_gtk_rekeys) + ieee80211_remove_key(key); + + if (data->last_gtk == key) + iwl_mvm_set_key_rx_seq(key, data->status, false); +} + +static bool iwl_mvm_setup_connection_keep(struct iwl_mvm *mvm, + struct ieee80211_vif *vif, + struct iwl_wowlan_status_data *status) +{ + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + struct iwl_mvm_d3_gtk_iter_data gtkdata = { + .mvm = mvm, + .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 (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_keys, >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_keys, >kdata); + + IWL_DEBUG_WOWLAN(mvm, "num of GTK rekeying %d\n", + status->num_of_gtk_rekeys); + 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.flags & IWL_WOWLAN_GTK_IDX_MASK, + }; + __be64 replay_ctr; + + IWL_DEBUG_WOWLAN(mvm, + "Received from FW GTK cipher %d, key index %d\n", + conf.conf.cipher, conf.conf.keyidx); + + BUILD_BUG_ON(WLAN_KEY_LEN_CCMP != WLAN_KEY_LEN_GCMP); + BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_CCMP); + BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_GCMP_256); + BUILD_BUG_ON(sizeof(conf.key) < WLAN_KEY_LEN_TKIP); + BUILD_BUG_ON(sizeof(conf.key) < sizeof(status->gtk.key)); + + memcpy(conf.conf.key, status->gtk.key, sizeof(status->gtk.key)); + + switch (gtkdata.cipher) { + case WLAN_CIPHER_SUITE_CCMP: + case WLAN_CIPHER_SUITE_GCMP: + conf.conf.keylen = WLAN_KEY_LEN_CCMP; + break; + case WLAN_CIPHER_SUITE_GCMP_256: + conf.conf.keylen = WLAN_KEY_LEN_GCMP_256; + break; + case WLAN_CIPHER_SUITE_TKIP: + conf.conf.keylen = WLAN_KEY_LEN_TKIP; + break; + } + + key = ieee80211_gtk_rekey_add(vif, &conf.conf); + if (IS_ERR(key)) + return false; + iwl_mvm_set_key_rx_seq(key, status, true); + + replay_ctr = cpu_to_be64(status->replay_ctr); + + ieee80211_gtk_rekey_notify(vif, vif->bss_conf.bssid, + (void *)&replay_ctr, GFP_KERNEL); + } + +out: + if (iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, + WOWLAN_GET_STATUSES, 0) < 10) { + mvmvif->seqno_valid = true; + /* +0x10 because the set API expects next-to-use, not last-used */ + mvmvif->seqno = status->non_qos_seq_ctr + 0x10; + } + + return true; +} + +static void iwl_mvm_convert_gtk_v2(struct iwl_wowlan_status_data *status, + struct iwl_wowlan_gtk_status_v2 *data) +{ + BUILD_BUG_ON(sizeof(status->gtk.key) < sizeof(data->key)); + BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + + sizeof(data->tkip_mic_key) > + sizeof(status->gtk.key)); + + status->gtk.len = data->key_len; + status->gtk.flags = data->key_flags; + + memcpy(status->gtk.key, data->key, sizeof(data->key)); + + /* if it's as long as the TKIP encryption key, copy MIC key */ + if (status->gtk.len == NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY) + memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, + data->tkip_mic_key, sizeof(data->tkip_mic_key)); +} + +static void iwl_mvm_convert_gtk_v3(struct iwl_wowlan_status_data *status, + struct iwl_wowlan_gtk_status_v3 *data) +{ + /* The parts we need are identical in v2 and v3 */ +#define CHECK(_f) do { \ + BUILD_BUG_ON(offsetof(struct iwl_wowlan_gtk_status_v2, _f) != \ + offsetof(struct iwl_wowlan_gtk_status_v3, _f)); \ + BUILD_BUG_ON(offsetofend(struct iwl_wowlan_gtk_status_v2, _f) !=\ + offsetofend(struct iwl_wowlan_gtk_status_v3, _f)); \ +} while (0) + + CHECK(key); + CHECK(key_len); + CHECK(key_flags); + CHECK(tkip_mic_key); +#undef CHECK + + iwl_mvm_convert_gtk_v2(status, (void *)data); +} + +static void iwl_mvm_convert_igtk(struct iwl_wowlan_status_data *status, + struct iwl_wowlan_igtk_status *data) +{ + const u8 *ipn = data->ipn; + + BUILD_BUG_ON(sizeof(status->igtk.key) < sizeof(data->key)); + + status->igtk.len = data->key_len; + status->igtk.flags = data->key_flags; + + memcpy(status->igtk.key, data->key, sizeof(data->key)); + + status->igtk.ipn = ((u64)ipn[5] << 0) | + ((u64)ipn[4] << 8) | + ((u64)ipn[3] << 16) | + ((u64)ipn[2] << 24) | + ((u64)ipn[1] << 32) | + ((u64)ipn[0] << 40); +} + +static void iwl_mvm_parse_wowlan_info_notif(struct iwl_mvm *mvm, + struct iwl_wowlan_info_notif *data, + struct iwl_wowlan_status_data *status, + u32 len) +{ + u32 i; + + if (!data) { + IWL_ERR(mvm, "iwl_wowlan_info_notif data is NULL\n"); + status = NULL; + return; + } + + if (len < sizeof(*data)) { + IWL_ERR(mvm, "Invalid WoWLAN info notification!\n"); + status = NULL; + return; + } + + iwl_mvm_convert_key_counters_v5(status, &data->gtk[0].sc); + iwl_mvm_convert_gtk_v3(status, &data->gtk[0]); + iwl_mvm_convert_igtk(status, &data->igtk[0]); + + status->replay_ctr = le64_to_cpu(data->replay_ctr); + status->pattern_number = le16_to_cpu(data->pattern_number); + for (i = 0; i < IWL_MAX_TID_COUNT; i++) + status->qos_seq_ctr[i] = + le16_to_cpu(data->qos_seq_ctr[i]); + status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); + status->num_of_gtk_rekeys = + le32_to_cpu(data->num_of_gtk_rekeys); + status->received_beacons = le32_to_cpu(data->received_beacons); + status->tid_tear_down = data->tid_tear_down; +} + +/* Occasionally, templates would be nice. This is one of those times ... */ +#define iwl_mvm_parse_wowlan_status_common(_ver) \ +static struct iwl_wowlan_status_data * \ +iwl_mvm_parse_wowlan_status_common_ ## _ver(struct iwl_mvm *mvm, \ + struct iwl_wowlan_status_ ##_ver *data,\ + int len) \ +{ \ + struct iwl_wowlan_status_data *status; \ + int data_size, i; \ + \ + if (len < sizeof(*data)) { \ + IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ + return NULL; \ + } \ + \ + data_size = ALIGN(le32_to_cpu(data->wake_packet_bufsize), 4); \ + if (len != sizeof(*data) + data_size) { \ + IWL_ERR(mvm, "Invalid WoWLAN status response!\n"); \ + return NULL; \ + } \ + \ + status = kzalloc(sizeof(*status), GFP_KERNEL); \ + if (!status) \ + return NULL; \ + \ + /* copy all the common fields */ \ + status->replay_ctr = le64_to_cpu(data->replay_ctr); \ + status->pattern_number = le16_to_cpu(data->pattern_number); \ + status->non_qos_seq_ctr = le16_to_cpu(data->non_qos_seq_ctr); \ + for (i = 0; i < 8; i++) \ + status->qos_seq_ctr[i] = \ + le16_to_cpu(data->qos_seq_ctr[i]); \ + status->wakeup_reasons = le32_to_cpu(data->wakeup_reasons); \ + status->num_of_gtk_rekeys = \ + le32_to_cpu(data->num_of_gtk_rekeys); \ + status->received_beacons = le32_to_cpu(data->received_beacons); \ + status->wake_packet_length = \ + le32_to_cpu(data->wake_packet_length); \ + status->wake_packet_bufsize = \ + le32_to_cpu(data->wake_packet_bufsize); \ + if (status->wake_packet_bufsize) { \ + status->wake_packet = \ + kmemdup(data->wake_packet, \ + status->wake_packet_bufsize, \ + GFP_KERNEL); \ + if (!status->wake_packet) { \ + kfree(status); \ + return NULL; \ + } \ + } else { \ + status->wake_packet = NULL; \ + } \ + \ + return status; \ +} + +iwl_mvm_parse_wowlan_status_common(v6) +iwl_mvm_parse_wowlan_status_common(v7) +iwl_mvm_parse_wowlan_status_common(v9) +iwl_mvm_parse_wowlan_status_common(v12) + +static struct iwl_wowlan_status_data * +iwl_mvm_send_wowlan_get_status(struct iwl_mvm *mvm, u8 sta_id) +{ + struct iwl_wowlan_status_data *status; + struct iwl_wowlan_get_status_cmd get_status_cmd = { + .sta_id = cpu_to_le32(sta_id), + }; + struct iwl_host_cmd cmd = { + .id = WOWLAN_GET_STATUSES, + .flags = CMD_WANT_SKB, + .data = { &get_status_cmd, }, + .len = { sizeof(get_status_cmd), }, + }; + int ret, len; + u8 notif_ver; + u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd.id, + IWL_FW_CMD_VER_UNKNOWN); + + if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN) + cmd.len[0] = 0; + + lockdep_assert_held(&mvm->mutex); + + ret = iwl_mvm_send_cmd(mvm, &cmd); + if (ret) { + IWL_ERR(mvm, "failed to query wakeup status (%d)\n", ret); + return ERR_PTR(ret); + } + + len = iwl_rx_packet_payload_len(cmd.resp_pkt); + + /* default to 7 (when we have IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL) */ + notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LONG_GROUP, + WOWLAN_GET_STATUSES, 0); + if (!notif_ver) + notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, + WOWLAN_GET_STATUSES, 7); + + if (!fw_has_api(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_API_WOWLAN_KEY_MATERIAL)) { + struct iwl_wowlan_status_v6 *v6 = (void *)cmd.resp_pkt->data; + + status = iwl_mvm_parse_wowlan_status_common_v6(mvm, v6, len); + if (!status) + goto out_free_resp; + + BUILD_BUG_ON(sizeof(v6->gtk.decrypt_key) > + sizeof(status->gtk.key)); + BUILD_BUG_ON(NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY + + sizeof(v6->gtk.tkip_mic_key) > + sizeof(status->gtk.key)); + + /* copy GTK info to the right place */ + memcpy(status->gtk.key, v6->gtk.decrypt_key, + sizeof(v6->gtk.decrypt_key)); + memcpy(status->gtk.key + NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY, + v6->gtk.tkip_mic_key, + sizeof(v6->gtk.tkip_mic_key)); + + iwl_mvm_convert_key_counters(status, &v6->gtk.rsc.all_tsc_rsc); + + /* hardcode the key length to 16 since v6 only supports 16 */ + status->gtk.len = 16; + + /* + * The key index only uses 2 bits (values 0 to 3) and + * we always set bit 7 which means this is the + * currently used key. + */ + status->gtk.flags = v6->gtk.key_index | BIT(7); + } else if (notif_ver == 7) { + struct iwl_wowlan_status_v7 *v7 = (void *)cmd.resp_pkt->data; + + status = iwl_mvm_parse_wowlan_status_common_v7(mvm, v7, len); + if (!status) + goto out_free_resp; + + iwl_mvm_convert_key_counters(status, &v7->gtk[0].rsc.all_tsc_rsc); + iwl_mvm_convert_gtk_v2(status, &v7->gtk[0]); + iwl_mvm_convert_igtk(status, &v7->igtk[0]); + } else if (notif_ver == 9 || notif_ver == 10 || notif_ver == 11) { + struct iwl_wowlan_status_v9 *v9 = (void *)cmd.resp_pkt->data; + + /* these three command versions have same layout and size, the + * difference is only in a few not used (reserved) fields. + */ + status = iwl_mvm_parse_wowlan_status_common_v9(mvm, v9, len); + if (!status) + goto out_free_resp; + + iwl_mvm_convert_key_counters(status, &v9->gtk[0].rsc.all_tsc_rsc); + iwl_mvm_convert_gtk_v2(status, &v9->gtk[0]); + iwl_mvm_convert_igtk(status, &v9->igtk[0]); + + status->tid_tear_down = v9->tid_tear_down; + } else if (notif_ver == 12) { + struct iwl_wowlan_status_v12 *v12 = (void *)cmd.resp_pkt->data; + + status = iwl_mvm_parse_wowlan_status_common_v12(mvm, v12, len); + if (!status) + goto out_free_resp; + + iwl_mvm_convert_key_counters_v5(status, &v12->gtk[0].sc); + iwl_mvm_convert_gtk_v3(status, &v12->gtk[0]); + iwl_mvm_convert_igtk(status, &v12->igtk[0]); + + status->tid_tear_down = v12->tid_tear_down; + } else { + IWL_ERR(mvm, + "Firmware advertises unknown WoWLAN status response %d!\n", + notif_ver); + status = NULL; + } + +out_free_resp: + iwl_free_resp(&cmd); + return 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) +{ + int i; + bool keep; + struct iwl_mvm_sta *mvm_ap_sta; + + if (!status) + goto out_unlock; + + IWL_DEBUG_WOWLAN(mvm, "wakeup reason 0x%x\n", + status->wakeup_reasons); + + /* still at hard-coded place 0 for D3 image */ + mvm_ap_sta = iwl_mvm_sta_from_staid_protected(mvm, 0); + if (!mvm_ap_sta) + goto out_unlock; + + 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; + } + + if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { + i = mvm->offload_tid; + iwl_trans_set_q_ptrs(mvm->trans, + mvm_ap_sta->tid_data[i].txq_id, + mvm_ap_sta->tid_data[i].seq_number >> 4); + } + + /* 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, status); + + return keep; + +out_unlock: + mutex_unlock(&mvm->mutex); + return false; +} + +#define ND_QUERY_BUF_LEN (sizeof(struct iwl_scan_offload_profile_match) * \ + IWL_SCAN_MAX_PROFILES) + +struct iwl_mvm_nd_results { + u32 matched_profiles; + u8 matches[ND_QUERY_BUF_LEN]; +}; + +static int +iwl_mvm_netdetect_query_results(struct iwl_mvm *mvm, + struct iwl_mvm_nd_results *results) +{ + struct iwl_scan_offload_match_info *query; + struct iwl_host_cmd cmd = { + .id = SCAN_OFFLOAD_PROFILES_QUERY_CMD, + .flags = CMD_WANT_SKB, + }; + int ret, len; + size_t query_len, matches_len; + int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw); + + ret = iwl_mvm_send_cmd(mvm, &cmd); + if (ret) { + IWL_ERR(mvm, "failed to query matched profiles (%d)\n", ret); + return ret; + } + + if (fw_has_api(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { + query_len = sizeof(struct iwl_scan_offload_match_info); + matches_len = sizeof(struct iwl_scan_offload_profile_match) * + max_profiles; + } else { + query_len = sizeof(struct iwl_scan_offload_profiles_query_v1); + matches_len = sizeof(struct iwl_scan_offload_profile_match_v1) * + max_profiles; + } + + len = iwl_rx_packet_payload_len(cmd.resp_pkt); + if (len < query_len) { + 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, matches_len); + +#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 int iwl_mvm_query_num_match_chans(struct iwl_mvm *mvm, + struct iwl_mvm_nd_results *results, + int idx) +{ + int n_chans = 0, i; + + if (fw_has_api(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { + struct iwl_scan_offload_profile_match *matches = + (void *)results->matches; + + for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN; i++) + n_chans += hweight8(matches[idx].matching_channels[i]); + } else { + struct iwl_scan_offload_profile_match_v1 *matches = + (void *)results->matches; + + for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1; i++) + n_chans += hweight8(matches[idx].matching_channels[i]); + } + + return n_chans; +} + +static void iwl_mvm_query_set_freqs(struct iwl_mvm *mvm, + struct iwl_mvm_nd_results *results, + struct cfg80211_wowlan_nd_match *match, + int idx) +{ + int i; + + if (fw_has_api(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_API_SCAN_OFFLOAD_CHANS)) { + struct iwl_scan_offload_profile_match *matches = + (void *)results->matches; + + for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN * 8; i++) + if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) + match->channels[match->n_channels++] = + mvm->nd_channels[i]->center_freq; + } else { + struct iwl_scan_offload_profile_match_v1 *matches = + (void *)results->matches; + + for (i = 0; i < SCAN_OFFLOAD_MATCHING_CHANNELS_LEN_V1 * 8; i++) + if (matches[idx].matching_channels[i / 8] & (BIT(i % 8))) + match->channels[match->n_channels++] = + mvm->nd_channels[i]->center_freq; + } +} + +/** + * enum iwl_d3_notif - d3 notifications + * @IWL_D3_NOTIF_WOWLAN_INFO: WOWLAN_INFO_NOTIF was received + * @IWL_D3_NOTIF_WOWLAN_WAKE_PKT: WOWLAN_WAKE_PKT_NOTIF was received + * @IWL_D3_NOTIF_PROT_OFFLOAD: PROT_OFFLOAD_NOTIF was received + * @IWL_D3_ND_MATCH_INFO: OFFLOAD_MATCH_INFO_NOTIF was received + * @IWL_D3_NOTIF_D3_END_NOTIF: D3_END_NOTIF was received + */ +enum iwl_d3_notif { + IWL_D3_NOTIF_WOWLAN_INFO = BIT(0), + IWL_D3_NOTIF_WOWLAN_WAKE_PKT = BIT(1), + IWL_D3_NOTIF_PROT_OFFLOAD = BIT(2), + IWL_D3_ND_MATCH_INFO = BIT(3), + IWL_D3_NOTIF_D3_END_NOTIF = BIT(4) +}; + +/* manage d3 resume data */ +struct iwl_d3_data { + struct iwl_wowlan_status_data *status; + bool test; + u32 d3_end_flags; + u32 notif_expected; /* bitmap - see &enum iwl_d3_notif */ + u32 notif_received; /* bitmap - see &enum iwl_d3_notif */ + struct iwl_mvm_nd_results *nd_results; + bool nd_results_valid; +}; + +static void iwl_mvm_query_netdetect_reasons(struct iwl_mvm *mvm, + struct ieee80211_vif *vif, + struct iwl_d3_data *d3_data) +{ + struct cfg80211_wowlan_nd_info *net_detect = NULL; + struct cfg80211_wowlan_wakeup wakeup = { + .pattern_idx = -1, + }; + struct cfg80211_wowlan_wakeup *wakeup_report = &wakeup; + unsigned long matched_profiles; + u32 reasons = 0; + int i, n_matches, ret; + + if (WARN_ON(!d3_data || !d3_data->status)) + goto out; + + reasons = d3_data->status->wakeup_reasons; + + if (reasons & IWL_WOWLAN_WAKEUP_BY_RFKILL_DEASSERTED) + wakeup.rfkill_release = true; + + if (reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) + goto out; + + if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, + WOWLAN_INFO_NOTIFICATION, 0)) { + IWL_INFO(mvm, "Query FW for ND results\n"); + ret = iwl_mvm_netdetect_query_results(mvm, d3_data->nd_results); + + } else { + IWL_INFO(mvm, "Notification based ND results\n"); + ret = d3_data->nd_results_valid ? 0 : -1; + } + + if (ret || !d3_data->nd_results->matched_profiles) { + wakeup_report = NULL; + goto out; + } + + matched_profiles = d3_data->nd_results->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(struct_size(net_detect, matches, n_matches), + GFP_KERNEL); + if (!net_detect || !n_matches) + goto out_report_nd; + + for_each_set_bit(i, &matched_profiles, mvm->n_nd_match_sets) { + struct cfg80211_wowlan_nd_match *match; + int idx, n_channels = 0; + + n_channels = iwl_mvm_query_num_match_chans(mvm, + d3_data->nd_results, + i); + + match = kzalloc(struct_size(match, channels, n_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; + + iwl_mvm_query_set_freqs(mvm, d3_data->nd_results, match, i); + } + +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_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 bool iwl_mvm_rt_status(struct iwl_trans *trans, u32 base, u32 *err_id) +{ + struct error_table_start { + /* cf. struct iwl_error_event_table */ + u32 valid; + __le32 err_id; + } err_info; + + if (!base) + return false; + + iwl_trans_read_mem_bytes(trans, base, + &err_info, sizeof(err_info)); + if (err_info.valid && err_id) + *err_id = le32_to_cpu(err_info.err_id); + + return !!err_info.valid; +} + +static bool iwl_mvm_check_rt_status(struct iwl_mvm *mvm, + struct ieee80211_vif *vif) +{ + u32 err_id; + + /* check for lmac1 error */ + if (iwl_mvm_rt_status(mvm->trans, + mvm->trans->dbg.lmac_error_event_table[0], + &err_id)) { + if (err_id == RF_KILL_INDICATOR_FOR_WOWLAN) { + struct cfg80211_wowlan_wakeup wakeup = { + .rfkill_release = true, + }; + ieee80211_report_wowlan_wakeup(vif, &wakeup, + GFP_KERNEL); + } + return true; + } + + /* check if we have lmac2 set and check for error */ + if (iwl_mvm_rt_status(mvm->trans, + mvm->trans->dbg.lmac_error_event_table[1], NULL)) + return true; + + /* check for umac error */ + if (iwl_mvm_rt_status(mvm->trans, + mvm->trans->dbg.umac_error_event_table, NULL)) + return true; + + return false; +} + +/* + * This function assumes: + * 1. The mutex is already held. + * 2. The callee functions unlock the mutex. + */ +static bool +iwl_mvm_choose_query_wakeup_reasons(struct iwl_mvm *mvm, + struct ieee80211_vif *vif, + struct iwl_d3_data *d3_data) +{ + lockdep_assert_held(&mvm->mutex); + + /* if FW uses status notification, status shouldn't be NULL here */ + if (!d3_data->status) { + struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); + u8 sta_id = mvm->net_detect ? IWL_MVM_INVALID_STA : mvmvif->ap_sta_id; + + d3_data->status = iwl_mvm_send_wowlan_get_status(mvm, sta_id); + } + + if (mvm->net_detect) { + iwl_mvm_query_netdetect_reasons(mvm, vif, d3_data); + } else { + bool keep = iwl_mvm_query_wakeup_reasons(mvm, vif, + d3_data->status); + +#ifdef CONFIG_IWLWIFI_DEBUGFS + if (keep) + mvm->keep_vif = vif; +#endif + + return keep; + } + return false; +} + +#define IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT (IWL_WOWLAN_WAKEUP_BY_MAGIC_PACKET | \ + IWL_WOWLAN_WAKEUP_BY_PATTERN | \ + IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN |\ + IWL_WAKEUP_BY_PATTERN_IPV4_TCP_SYN_WILDCARD |\ + IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN |\ + IWL_WAKEUP_BY_PATTERN_IPV6_TCP_SYN_WILDCARD) + +static int iwl_mvm_wowlan_store_wake_pkt(struct iwl_mvm *mvm, + struct iwl_wowlan_wake_pkt_notif *notif, + struct iwl_wowlan_status_data *status, + u32 len) +{ + u32 data_size, packet_len = le32_to_cpu(notif->wake_packet_length); + + if (len < sizeof(*notif)) { + IWL_ERR(mvm, "Invalid WoWLAN wake packet notification!\n"); + return -EIO; + } + + if (WARN_ON(!status)) { + IWL_ERR(mvm, "Got wake packet notification but wowlan status data is NULL\n"); + return -EIO; + } + + if (WARN_ON(!(status->wakeup_reasons & + IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT))) { + IWL_ERR(mvm, "Got wakeup packet but wakeup reason is %x\n", + status->wakeup_reasons); + return -EIO; + } + + data_size = len - offsetof(struct iwl_wowlan_wake_pkt_notif, wake_packet); + + /* data_size got the padding from the notification, remove it. */ + if (packet_len < data_size) + data_size = packet_len; + + status->wake_packet = kmemdup(notif->wake_packet, data_size, + GFP_ATOMIC); + + if (!status->wake_packet) + return -ENOMEM; + + status->wake_packet_length = packet_len; + status->wake_packet_bufsize = data_size; + + return 0; +} + +static void iwl_mvm_nd_match_info_handler(struct iwl_mvm *mvm, + struct iwl_d3_data *d3_data, + struct iwl_scan_offload_match_info *notif, + u32 len) +{ + struct iwl_wowlan_status_data *status = d3_data->status; + struct ieee80211_vif *vif = iwl_mvm_get_bss_vif(mvm); + struct iwl_mvm_nd_results *results = d3_data->nd_results; + size_t i, matches_len = sizeof(struct iwl_scan_offload_profile_match) * + iwl_umac_scan_get_max_profiles(mvm->fw); + + if (IS_ERR_OR_NULL(vif)) + return; + + if (len < sizeof(struct iwl_scan_offload_match_info)) { + IWL_ERR(mvm, "Invalid scan match info notification\n"); + return; + } + + if (!mvm->net_detect) { + IWL_ERR(mvm, "Unexpected scan match info notification\n"); + return; + } + + if (!status || status->wakeup_reasons != IWL_WOWLAN_WAKEUP_BY_NON_WIRELESS) { + IWL_ERR(mvm, + "Ignore scan match info notification: no reason\n"); + return; + } + +#ifdef CONFIG_IWLWIFI_DEBUGFS + mvm->last_netdetect_scans = le32_to_cpu(notif->n_scans_done); +#endif + + results->matched_profiles = le32_to_cpu(notif->matched_profiles); + IWL_INFO(mvm, "number of matched profiles=%u\n", + results->matched_profiles); + + if (results->matched_profiles) { + memcpy(results->matches, notif->matches, matches_len); + d3_data->nd_results_valid = TRUE; + } + + /* no scan should be active at this point */ + mvm->scan_status = 0; + for (i = 0; i < mvm->max_scans; i++) + mvm->scan_uid_status[i] = 0; +} + +static bool iwl_mvm_wait_d3_notif(struct iwl_notif_wait_data *notif_wait, + struct iwl_rx_packet *pkt, void *data) +{ + struct iwl_mvm *mvm = + container_of(notif_wait, struct iwl_mvm, notif_wait); + struct iwl_d3_data *d3_data = data; + u32 len; + int ret; + int wowlan_info_ver = iwl_fw_lookup_notif_ver(mvm->fw, + PROT_OFFLOAD_GROUP, + WOWLAN_INFO_NOTIFICATION, + IWL_FW_CMD_VER_UNKNOWN); + + + switch (WIDE_ID(pkt->hdr.group_id, pkt->hdr.cmd)) { + case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION): { + struct iwl_wowlan_info_notif *notif; + + if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_INFO) { + /* We might get two notifications due to dual bss */ + IWL_DEBUG_WOWLAN(mvm, + "Got additional wowlan info notification\n"); + break; + } + + if (wowlan_info_ver < 2) { + struct iwl_wowlan_info_notif_v1 *notif_v1 = (void *)pkt->data; + + notif = kmemdup(notif_v1, sizeof(*notif), GFP_ATOMIC); + if (!notif) + return false; + + notif->tid_tear_down = notif_v1->tid_tear_down; + notif->station_id = notif_v1->station_id; + memset_after(notif, 0, station_id); + } else { + notif = (void *)pkt->data; + } + + d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_INFO; + len = iwl_rx_packet_payload_len(pkt); + iwl_mvm_parse_wowlan_info_notif(mvm, notif, d3_data->status, + len); + + if (wowlan_info_ver < 2) + kfree(notif); + + if (d3_data->status && + d3_data->status->wakeup_reasons & IWL_WOWLAN_WAKEUP_REASON_HAS_WAKEUP_PKT) + /* We are supposed to get also wake packet notif */ + d3_data->notif_expected |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; + + break; + } + case WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION): { + struct iwl_wowlan_wake_pkt_notif *notif = (void *)pkt->data; + + if (d3_data->notif_received & IWL_D3_NOTIF_WOWLAN_WAKE_PKT) { + /* We shouldn't get two wake packet notifications */ + IWL_ERR(mvm, + "Got additional wowlan wake packet notification\n"); + } else { + d3_data->notif_received |= IWL_D3_NOTIF_WOWLAN_WAKE_PKT; + len = iwl_rx_packet_payload_len(pkt); + ret = iwl_mvm_wowlan_store_wake_pkt(mvm, notif, + d3_data->status, + len); + if (ret) + IWL_ERR(mvm, + "Can't parse WOWLAN_WAKE_PKT_NOTIFICATION\n"); + } + + break; + } + case WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF): { + struct iwl_scan_offload_match_info *notif = (void *)pkt->data; + + if (d3_data->notif_received & IWL_D3_ND_MATCH_INFO) { + IWL_ERR(mvm, + "Got additional netdetect match info\n"); + break; + } + + d3_data->notif_received |= IWL_D3_ND_MATCH_INFO; + + /* explicitly set this in the 'expected' as well */ + d3_data->notif_expected |= IWL_D3_ND_MATCH_INFO; + + len = iwl_rx_packet_payload_len(pkt); + iwl_mvm_nd_match_info_handler(mvm, d3_data, notif, len); + break; + } + case WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION): { + struct iwl_mvm_d3_end_notif *notif = (void *)pkt->data; + + d3_data->d3_end_flags = __le32_to_cpu(notif->flags); + d3_data->notif_received |= IWL_D3_NOTIF_D3_END_NOTIF; + + break; + } + default: + WARN_ON(1); + } + + return d3_data->notif_received == d3_data->notif_expected; +} + +static int iwl_mvm_resume_firmware(struct iwl_mvm *mvm, bool test) +{ + int ret; + enum iwl_d3_status d3_status; + struct iwl_host_cmd cmd = { + .id = D0I3_END_CMD, + .flags = CMD_WANT_SKB | CMD_SEND_IN_D3, + }; + bool reset = fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); + + ret = iwl_trans_d3_resume(mvm->trans, &d3_status, test, !reset); + if (ret) + return ret; + + if (d3_status != IWL_D3_STATUS_ALIVE) { + IWL_INFO(mvm, "Device was reset during suspend\n"); + return -ENOENT; + } + + /* + * We should trigger resume flow using command only for 22000 family + * AX210 and above don't need the command since they have + * the doorbell interrupt. + */ + if (mvm->trans->trans_cfg->device_family <= IWL_DEVICE_FAMILY_22000 && + fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_D0I3_END_FIRST)) { + ret = iwl_mvm_send_cmd(mvm, &cmd); + if (ret < 0) + IWL_ERR(mvm, "Failed to send D0I3_END_CMD first (%d)\n", + ret); + } + + return ret; +} + +#define IWL_MVM_D3_NOTIF_TIMEOUT (HZ / 5) + +static int iwl_mvm_d3_notif_wait(struct iwl_mvm *mvm, + struct iwl_d3_data *d3_data) +{ + static const u16 d3_resume_notif[] = { + WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_INFO_NOTIFICATION), + WIDE_ID(PROT_OFFLOAD_GROUP, WOWLAN_WAKE_PKT_NOTIFICATION), + WIDE_ID(SCAN_GROUP, OFFLOAD_MATCH_INFO_NOTIF), + WIDE_ID(PROT_OFFLOAD_GROUP, D3_END_NOTIFICATION) + }; + struct iwl_notification_wait wait_d3_notif; + int ret; + + iwl_init_notification_wait(&mvm->notif_wait, &wait_d3_notif, + d3_resume_notif, ARRAY_SIZE(d3_resume_notif), + iwl_mvm_wait_d3_notif, d3_data); + + ret = iwl_mvm_resume_firmware(mvm, d3_data->test); + if (ret) { + iwl_remove_notification(&mvm->notif_wait, &wait_d3_notif); + return ret; + } + + return iwl_wait_notification(&mvm->notif_wait, &wait_d3_notif, + IWL_MVM_D3_NOTIF_TIMEOUT); +} + +static inline bool iwl_mvm_d3_resume_notif_based(struct iwl_mvm *mvm) +{ + return iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, + WOWLAN_INFO_NOTIFICATION, 0) && + iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, + WOWLAN_WAKE_PKT_NOTIFICATION, 0) && + iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, + D3_END_NOTIFICATION, 0); +} + +static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test) +{ + struct ieee80211_vif *vif = NULL; + int ret = 1; + struct iwl_mvm_nd_results results = {}; + struct iwl_d3_data d3_data = { + .test = test, + .notif_expected = + IWL_D3_NOTIF_WOWLAN_INFO | + IWL_D3_NOTIF_D3_END_NOTIF, + .nd_results_valid = false, + .nd_results = &results, + }; + bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); + bool d0i3_first = fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_D0I3_END_FIRST); + bool resume_notif_based = iwl_mvm_d3_resume_notif_based(mvm); + bool keep = false; + + mutex_lock(&mvm->mutex); + + mvm->last_reset_or_resume_time_jiffies = jiffies; + + /* get the BSS vif pointer again */ + vif = iwl_mvm_get_bss_vif(mvm); + if (IS_ERR_OR_NULL(vif)) + goto err; + + iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); + + if (iwl_mvm_check_rt_status(mvm, vif)) { + set_bit(STATUS_FW_ERROR, &mvm->trans->status); + iwl_mvm_dump_nic_error_log(mvm); + iwl_dbg_tlv_time_point(&mvm->fwrt, + IWL_FW_INI_TIME_POINT_FW_ASSERT, NULL); + iwl_fw_dbg_collect_desc(&mvm->fwrt, &iwl_dump_desc_assert, + false, 0); + ret = 1; + goto err; + } + + if (resume_notif_based) { + d3_data.status = kzalloc(sizeof(*d3_data.status), GFP_KERNEL); + if (!d3_data.status) { + IWL_ERR(mvm, "Failed to allocate wowlan status\n"); + ret = -ENOMEM; + goto err; + } + + ret = iwl_mvm_d3_notif_wait(mvm, &d3_data); + if (ret) + goto err; + } else { + ret = iwl_mvm_resume_firmware(mvm, test); + if (ret < 0) + goto err; + } + + /* after the successful handshake, we're out of D3 */ + mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; + + /* when reset is required we can't send these following commands */ + if (d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE) + goto query_wakeup_reasons; + + /* + * 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); + + /* Re-configure PPAG settings */ + iwl_mvm_ppag_send_cmd(mvm); + + if (!unified_image) + /* Re-configure default SAR profile */ + iwl_mvm_sar_select_profile(mvm, 1, 1); + + if (mvm->net_detect && unified_image) { + /* If this is a non-unified image, we restart the FW, + * so no need to stop the netdetect scan. If that + * fails, continue and try to get the wake-up reasons, + * but trigger a HW restart by keeping a failure code + * in ret. + */ + ret = iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_NETDETECT, + false); + } + +query_wakeup_reasons: + keep = iwl_mvm_choose_query_wakeup_reasons(mvm, vif, &d3_data); + /* has unlocked the mutex, so skip that */ + goto out; + +err: + mutex_unlock(&mvm->mutex); +out: + if (d3_data.status) + kfree(d3_data.status->wake_packet); + kfree(d3_data.status); + iwl_mvm_free_nd(mvm); + + if (!d3_data.test && !mvm->net_detect) + ieee80211_iterate_active_interfaces_mtx(mvm->hw, + IEEE80211_IFACE_ITER_NORMAL, + iwl_mvm_d3_disconnect_iter, + keep ? vif : NULL); + + clear_bit(IWL_MVM_STATUS_IN_D3, &mvm->status); + + /* no need to reset the device in unified images, if successful */ + if (unified_image && !ret) { + /* nothing else to do if we already sent D0I3_END_CMD */ + if (d0i3_first) + return 0; + + if (!iwl_fw_lookup_notif_ver(mvm->fw, PROT_OFFLOAD_GROUP, + D3_END_NOTIFICATION, 0)) { + ret = iwl_mvm_send_cmd_pdu(mvm, D0I3_END_CMD, 0, 0, NULL); + if (!ret) + return 0; + } else if (!(d3_data.d3_end_flags & IWL_D0I3_RESET_REQUIRE)) { + return 0; + } + } + + /* + * Reconfigure the device in one of the following cases: + * 1. We are not using a unified image + * 2. We are using a unified image but had an error while exiting D3 + */ + set_bit(IWL_MVM_STATUS_HW_RESTART_REQUESTED, &mvm->status); + + /* regardless of what happened, we're now out of D3 */ + mvm->trans->system_pm_mode = IWL_PLAT_PM_MODE_DISABLED; + + return 1; +} + +int iwl_mvm_resume(struct ieee80211_hw *hw) +{ + struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw); + int ret; + + ret = __iwl_mvm_resume(mvm, false); + + iwl_mvm_resume_tcm(mvm); + + iwl_fw_runtime_resume(&mvm->fwrt); + + return ret; +} + +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; + + iwl_mvm_pause_tcm(mvm, true); + + iwl_fw_runtime_suspend(&mvm->fwrt); + + /* start pseudo D3 */ + rtnl_lock(); + wiphy_lock(mvm->hw->wiphy); + err = __iwl_mvm_suspend(mvm->hw, mvm->hw->wiphy->wowlan_config, true); + wiphy_unlock(mvm->hw->wiphy); + rtnl_unlock(); + if (err > 0) + err = -EINVAL; + if (err) + 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; + bool unified_image = fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG); + + mvm->d3_test_active = false; + + iwl_fw_dbg_read_d3_debug_data(&mvm->fwrt); + + rtnl_lock(); + wiphy_lock(mvm->hw->wiphy); + __iwl_mvm_resume(mvm, true); + wiphy_unlock(mvm->hw->wiphy); + rtnl_unlock(); + + iwl_mvm_resume_tcm(mvm); + + iwl_fw_runtime_resume(&mvm->fwrt); + + iwl_abort_notification_waits(&mvm->notif_wait); + if (!unified_image) { + int remaining_time = 10; + + 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!\n"); + } + + ieee80211_iterate_active_interfaces_atomic( + mvm->hw, IEEE80211_IFACE_ITER_NORMAL, + iwl_mvm_d3_test_disconn_work_iter, mvm->keep_vif); + + 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 |