diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/mac.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/mac.c | 3069 |
1 files changed, 3069 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c new file mode 100644 index 000000000000..da5c333d0d4b --- /dev/null +++ b/drivers/net/wireless/ath/ath10k/mac.c @@ -0,0 +1,3069 @@ +/* + * Copyright (c) 2005-2011 Atheros Communications Inc. + * Copyright (c) 2011-2013 Qualcomm Atheros, Inc. + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "mac.h" + +#include <net/mac80211.h> +#include <linux/etherdevice.h> + +#include "core.h" +#include "debug.h" +#include "wmi.h" +#include "htt.h" +#include "txrx.h" + +/**********/ +/* Crypto */ +/**********/ + +static int ath10k_send_key(struct ath10k_vif *arvif, + struct ieee80211_key_conf *key, + enum set_key_cmd cmd, + const u8 *macaddr) +{ + struct wmi_vdev_install_key_arg arg = { + .vdev_id = arvif->vdev_id, + .key_idx = key->keyidx, + .key_len = key->keylen, + .key_data = key->key, + .macaddr = macaddr, + }; + + if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) + arg.key_flags = WMI_KEY_PAIRWISE; + else + arg.key_flags = WMI_KEY_GROUP; + + switch (key->cipher) { + case WLAN_CIPHER_SUITE_CCMP: + arg.key_cipher = WMI_CIPHER_AES_CCM; + key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; + break; + case WLAN_CIPHER_SUITE_TKIP: + arg.key_cipher = WMI_CIPHER_TKIP; + arg.key_txmic_len = 8; + arg.key_rxmic_len = 8; + break; + case WLAN_CIPHER_SUITE_WEP40: + case WLAN_CIPHER_SUITE_WEP104: + arg.key_cipher = WMI_CIPHER_WEP; + /* AP/IBSS mode requires self-key to be groupwise + * Otherwise pairwise key must be set */ + if (memcmp(macaddr, arvif->vif->addr, ETH_ALEN)) + arg.key_flags = WMI_KEY_PAIRWISE; + break; + default: + ath10k_warn("cipher %d is not supported\n", key->cipher); + return -EOPNOTSUPP; + } + + if (cmd == DISABLE_KEY) { + arg.key_cipher = WMI_CIPHER_NONE; + arg.key_data = NULL; + } + + return ath10k_wmi_vdev_install_key(arvif->ar, &arg); +} + +static int ath10k_install_key(struct ath10k_vif *arvif, + struct ieee80211_key_conf *key, + enum set_key_cmd cmd, + const u8 *macaddr) +{ + struct ath10k *ar = arvif->ar; + int ret; + + INIT_COMPLETION(ar->install_key_done); + + ret = ath10k_send_key(arvif, key, cmd, macaddr); + if (ret) + return ret; + + ret = wait_for_completion_timeout(&ar->install_key_done, 3*HZ); + if (ret == 0) + return -ETIMEDOUT; + + return 0; +} + +static int ath10k_install_peer_wep_keys(struct ath10k_vif *arvif, + const u8 *addr) +{ + struct ath10k *ar = arvif->ar; + struct ath10k_peer *peer; + int ret; + int i; + + lockdep_assert_held(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + peer = ath10k_peer_find(ar, arvif->vdev_id, addr); + spin_unlock_bh(&ar->data_lock); + + if (!peer) + return -ENOENT; + + for (i = 0; i < ARRAY_SIZE(arvif->wep_keys); i++) { + if (arvif->wep_keys[i] == NULL) + continue; + + ret = ath10k_install_key(arvif, arvif->wep_keys[i], SET_KEY, + addr); + if (ret) + return ret; + + peer->keys[i] = arvif->wep_keys[i]; + } + + return 0; +} + +static int ath10k_clear_peer_keys(struct ath10k_vif *arvif, + const u8 *addr) +{ + struct ath10k *ar = arvif->ar; + struct ath10k_peer *peer; + int first_errno = 0; + int ret; + int i; + + lockdep_assert_held(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + peer = ath10k_peer_find(ar, arvif->vdev_id, addr); + spin_unlock_bh(&ar->data_lock); + + if (!peer) + return -ENOENT; + + for (i = 0; i < ARRAY_SIZE(peer->keys); i++) { + if (peer->keys[i] == NULL) + continue; + + ret = ath10k_install_key(arvif, peer->keys[i], + DISABLE_KEY, addr); + if (ret && first_errno == 0) + first_errno = ret; + + if (ret) + ath10k_warn("could not remove peer wep key %d (%d)\n", + i, ret); + + peer->keys[i] = NULL; + } + + return first_errno; +} + +static int ath10k_clear_vdev_key(struct ath10k_vif *arvif, + struct ieee80211_key_conf *key) +{ + struct ath10k *ar = arvif->ar; + struct ath10k_peer *peer; + u8 addr[ETH_ALEN]; + int first_errno = 0; + int ret; + int i; + + lockdep_assert_held(&ar->conf_mutex); + + for (;;) { + /* since ath10k_install_key we can't hold data_lock all the + * time, so we try to remove the keys incrementally */ + spin_lock_bh(&ar->data_lock); + i = 0; + list_for_each_entry(peer, &ar->peers, list) { + for (i = 0; i < ARRAY_SIZE(peer->keys); i++) { + if (peer->keys[i] == key) { + memcpy(addr, peer->addr, ETH_ALEN); + peer->keys[i] = NULL; + break; + } + } + + if (i < ARRAY_SIZE(peer->keys)) + break; + } + spin_unlock_bh(&ar->data_lock); + + if (i == ARRAY_SIZE(peer->keys)) + break; + + ret = ath10k_install_key(arvif, key, DISABLE_KEY, addr); + if (ret && first_errno == 0) + first_errno = ret; + + if (ret) + ath10k_warn("could not remove key for %pM\n", addr); + } + + return first_errno; +} + + +/*********************/ +/* General utilities */ +/*********************/ + +static inline enum wmi_phy_mode +chan_to_phymode(const struct cfg80211_chan_def *chandef) +{ + enum wmi_phy_mode phymode = MODE_UNKNOWN; + + switch (chandef->chan->band) { + case IEEE80211_BAND_2GHZ: + switch (chandef->width) { + case NL80211_CHAN_WIDTH_20_NOHT: + phymode = MODE_11G; + break; + case NL80211_CHAN_WIDTH_20: + phymode = MODE_11NG_HT20; + break; + case NL80211_CHAN_WIDTH_40: + phymode = MODE_11NG_HT40; + break; + case NL80211_CHAN_WIDTH_5: + case NL80211_CHAN_WIDTH_10: + case NL80211_CHAN_WIDTH_80: + case NL80211_CHAN_WIDTH_80P80: + case NL80211_CHAN_WIDTH_160: + phymode = MODE_UNKNOWN; + break; + } + break; + case IEEE80211_BAND_5GHZ: + switch (chandef->width) { + case NL80211_CHAN_WIDTH_20_NOHT: + phymode = MODE_11A; + break; + case NL80211_CHAN_WIDTH_20: + phymode = MODE_11NA_HT20; + break; + case NL80211_CHAN_WIDTH_40: + phymode = MODE_11NA_HT40; + break; + case NL80211_CHAN_WIDTH_80: + phymode = MODE_11AC_VHT80; + break; + case NL80211_CHAN_WIDTH_5: + case NL80211_CHAN_WIDTH_10: + case NL80211_CHAN_WIDTH_80P80: + case NL80211_CHAN_WIDTH_160: + phymode = MODE_UNKNOWN; + break; + } + break; + default: + break; + } + + WARN_ON(phymode == MODE_UNKNOWN); + return phymode; +} + +static u8 ath10k_parse_mpdudensity(u8 mpdudensity) +{ +/* + * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing": + * 0 for no restriction + * 1 for 1/4 us + * 2 for 1/2 us + * 3 for 1 us + * 4 for 2 us + * 5 for 4 us + * 6 for 8 us + * 7 for 16 us + */ + switch (mpdudensity) { + case 0: + return 0; + case 1: + case 2: + case 3: + /* Our lower layer calculations limit our precision to + 1 microsecond */ + return 1; + case 4: + return 2; + case 5: + return 4; + case 6: + return 8; + case 7: + return 16; + default: + return 0; + } +} + +static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr) +{ + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + ret = ath10k_wmi_peer_create(ar, vdev_id, addr); + if (ret) + return ret; + + ret = ath10k_wait_for_peer_created(ar, vdev_id, addr); + if (ret) + return ret; + + return 0; +} + +static int ath10k_peer_delete(struct ath10k *ar, u32 vdev_id, const u8 *addr) +{ + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + ret = ath10k_wmi_peer_delete(ar, vdev_id, addr); + if (ret) + return ret; + + ret = ath10k_wait_for_peer_deleted(ar, vdev_id, addr); + if (ret) + return ret; + + return 0; +} + +static void ath10k_peer_cleanup(struct ath10k *ar, u32 vdev_id) +{ + struct ath10k_peer *peer, *tmp; + + lockdep_assert_held(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + list_for_each_entry_safe(peer, tmp, &ar->peers, list) { + if (peer->vdev_id != vdev_id) + continue; + + ath10k_warn("removing stale peer %pM from vdev_id %d\n", + peer->addr, vdev_id); + + list_del(&peer->list); + kfree(peer); + } + spin_unlock_bh(&ar->data_lock); +} + +/************************/ +/* Interface management */ +/************************/ + +static inline int ath10k_vdev_setup_sync(struct ath10k *ar) +{ + int ret; + + ret = wait_for_completion_timeout(&ar->vdev_setup_done, + ATH10K_VDEV_SETUP_TIMEOUT_HZ); + if (ret == 0) + return -ETIMEDOUT; + + return 0; +} + +static int ath10k_vdev_start(struct ath10k_vif *arvif) +{ + struct ath10k *ar = arvif->ar; + struct ieee80211_conf *conf = &ar->hw->conf; + struct ieee80211_channel *channel = conf->chandef.chan; + struct wmi_vdev_start_request_arg arg = {}; + int ret = 0; + + lockdep_assert_held(&ar->conf_mutex); + + INIT_COMPLETION(ar->vdev_setup_done); + + arg.vdev_id = arvif->vdev_id; + arg.dtim_period = arvif->dtim_period; + arg.bcn_intval = arvif->beacon_interval; + + arg.channel.freq = channel->center_freq; + + arg.channel.band_center_freq1 = conf->chandef.center_freq1; + + arg.channel.mode = chan_to_phymode(&conf->chandef); + + arg.channel.min_power = channel->max_power * 3; + arg.channel.max_power = channel->max_power * 4; + arg.channel.max_reg_power = channel->max_reg_power * 4; + arg.channel.max_antenna_gain = channel->max_antenna_gain; + + if (arvif->vdev_type == WMI_VDEV_TYPE_AP) { + arg.ssid = arvif->u.ap.ssid; + arg.ssid_len = arvif->u.ap.ssid_len; + arg.hidden_ssid = arvif->u.ap.hidden_ssid; + } else if (arvif->vdev_type == WMI_VDEV_TYPE_IBSS) { + arg.ssid = arvif->vif->bss_conf.ssid; + arg.ssid_len = arvif->vif->bss_conf.ssid_len; + } + + ret = ath10k_wmi_vdev_start(ar, &arg); + if (ret) { + ath10k_warn("WMI vdev start failed: ret %d\n", ret); + return ret; + } + + ret = ath10k_vdev_setup_sync(ar); + if (ret) { + ath10k_warn("vdev setup failed %d\n", ret); + return ret; + } + + return ret; +} + +static int ath10k_vdev_stop(struct ath10k_vif *arvif) +{ + struct ath10k *ar = arvif->ar; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + INIT_COMPLETION(ar->vdev_setup_done); + + ret = ath10k_wmi_vdev_stop(ar, arvif->vdev_id); + if (ret) { + ath10k_warn("WMI vdev stop failed: ret %d\n", ret); + return ret; + } + + ret = ath10k_vdev_setup_sync(ar); + if (ret) { + ath10k_warn("vdev setup failed %d\n", ret); + return ret; + } + + return ret; +} + +static int ath10k_monitor_start(struct ath10k *ar, int vdev_id) +{ + struct ieee80211_channel *channel = ar->hw->conf.chandef.chan; + struct wmi_vdev_start_request_arg arg = {}; + enum nl80211_channel_type type; + int ret = 0; + + lockdep_assert_held(&ar->conf_mutex); + + type = cfg80211_get_chandef_type(&ar->hw->conf.chandef); + + arg.vdev_id = vdev_id; + arg.channel.freq = channel->center_freq; + arg.channel.band_center_freq1 = ar->hw->conf.chandef.center_freq1; + + /* TODO setup this dynamically, what in case we + don't have any vifs? */ + arg.channel.mode = chan_to_phymode(&ar->hw->conf.chandef); + + arg.channel.min_power = channel->max_power * 3; + arg.channel.max_power = channel->max_power * 4; + arg.channel.max_reg_power = channel->max_reg_power * 4; + arg.channel.max_antenna_gain = channel->max_antenna_gain; + + ret = ath10k_wmi_vdev_start(ar, &arg); + if (ret) { + ath10k_warn("Monitor vdev start failed: ret %d\n", ret); + return ret; + } + + ret = ath10k_vdev_setup_sync(ar); + if (ret) { + ath10k_warn("Monitor vdev setup failed %d\n", ret); + return ret; + } + + ret = ath10k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr); + if (ret) { + ath10k_warn("Monitor vdev up failed: %d\n", ret); + goto vdev_stop; + } + + ar->monitor_vdev_id = vdev_id; + ar->monitor_enabled = true; + + return 0; + +vdev_stop: + ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id); + if (ret) + ath10k_warn("Monitor vdev stop failed: %d\n", ret); + + return ret; +} + +static int ath10k_monitor_stop(struct ath10k *ar) +{ + int ret = 0; + + lockdep_assert_held(&ar->conf_mutex); + + /* For some reasons, ath10k_wmi_vdev_down() here couse + * often ath10k_wmi_vdev_stop() to fail. Next we could + * not run monitor vdev and driver reload + * required. Don't see such problems we skip + * ath10k_wmi_vdev_down() here. + */ + + ret = ath10k_wmi_vdev_stop(ar, ar->monitor_vdev_id); + if (ret) + ath10k_warn("Monitor vdev stop failed: %d\n", ret); + + ret = ath10k_vdev_setup_sync(ar); + if (ret) + ath10k_warn("Monitor_down sync failed: %d\n", ret); + + ar->monitor_enabled = false; + return ret; +} + +static int ath10k_monitor_create(struct ath10k *ar) +{ + int bit, ret = 0; + + lockdep_assert_held(&ar->conf_mutex); + + if (ar->monitor_present) { + ath10k_warn("Monitor mode already enabled\n"); + return 0; + } + + bit = ffs(ar->free_vdev_map); + if (bit == 0) { + ath10k_warn("No free VDEV slots\n"); + return -ENOMEM; + } + + ar->monitor_vdev_id = bit - 1; + ar->free_vdev_map &= ~(1 << ar->monitor_vdev_id); + + ret = ath10k_wmi_vdev_create(ar, ar->monitor_vdev_id, + WMI_VDEV_TYPE_MONITOR, + 0, ar->mac_addr); + if (ret) { + ath10k_warn("WMI vdev monitor create failed: ret %d\n", ret); + goto vdev_fail; + } + + ath10k_dbg(ATH10K_DBG_MAC, "Monitor interface created, vdev id: %d\n", + ar->monitor_vdev_id); + + ar->monitor_present = true; + return 0; + +vdev_fail: + /* + * Restore the ID to the global map. + */ + ar->free_vdev_map |= 1 << (ar->monitor_vdev_id); + return ret; +} + +static int ath10k_monitor_destroy(struct ath10k *ar) +{ + int ret = 0; + + lockdep_assert_held(&ar->conf_mutex); + + if (!ar->monitor_present) + return 0; + + ret = ath10k_wmi_vdev_delete(ar, ar->monitor_vdev_id); + if (ret) { + ath10k_warn("WMI vdev monitor delete failed: %d\n", ret); + return ret; + } + + ar->free_vdev_map |= 1 << (ar->monitor_vdev_id); + ar->monitor_present = false; + + ath10k_dbg(ATH10K_DBG_MAC, "Monitor interface destroyed, vdev id: %d\n", + ar->monitor_vdev_id); + return ret; +} + +static void ath10k_control_beaconing(struct ath10k_vif *arvif, + struct ieee80211_bss_conf *info) +{ + int ret = 0; + + if (!info->enable_beacon) { + ath10k_vdev_stop(arvif); + return; + } + + arvif->tx_seq_no = 0x1000; + + ret = ath10k_vdev_start(arvif); + if (ret) + return; + + ret = ath10k_wmi_vdev_up(arvif->ar, arvif->vdev_id, 0, info->bssid); + if (ret) { + ath10k_warn("Failed to bring up VDEV: %d\n", + arvif->vdev_id); + return; + } + ath10k_dbg(ATH10K_DBG_MAC, "VDEV: %d up\n", arvif->vdev_id); +} + +static void ath10k_control_ibss(struct ath10k_vif *arvif, + struct ieee80211_bss_conf *info, + const u8 self_peer[ETH_ALEN]) +{ + int ret = 0; + + if (!info->ibss_joined) { + ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, self_peer); + if (ret) + ath10k_warn("Failed to delete IBSS self peer:%pM for VDEV:%d ret:%d\n", + self_peer, arvif->vdev_id, ret); + + if (is_zero_ether_addr(arvif->u.ibss.bssid)) + return; + + ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, + arvif->u.ibss.bssid); + if (ret) { + ath10k_warn("Failed to delete IBSS BSSID peer:%pM for VDEV:%d ret:%d\n", + arvif->u.ibss.bssid, arvif->vdev_id, ret); + return; + } + + memset(arvif->u.ibss.bssid, 0, ETH_ALEN); + + return; + } + + ret = ath10k_peer_create(arvif->ar, arvif->vdev_id, self_peer); + if (ret) { + ath10k_warn("Failed to create IBSS self peer:%pM for VDEV:%d ret:%d\n", + self_peer, arvif->vdev_id, ret); + return; + } + + ret = ath10k_wmi_vdev_set_param(arvif->ar, arvif->vdev_id, + WMI_VDEV_PARAM_ATIM_WINDOW, + ATH10K_DEFAULT_ATIM); + if (ret) + ath10k_warn("Failed to set IBSS ATIM for VDEV:%d ret:%d\n", + arvif->vdev_id, ret); +} + +/* + * Review this when mac80211 gains per-interface powersave support. + */ +static void ath10k_ps_iter(void *data, u8 *mac, struct ieee80211_vif *vif) +{ + struct ath10k_generic_iter *ar_iter = data; + struct ieee80211_conf *conf = &ar_iter->ar->hw->conf; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + enum wmi_sta_powersave_param param; + enum wmi_sta_ps_mode psmode; + int ret; + + if (vif->type != NL80211_IFTYPE_STATION) + return; + + if (conf->flags & IEEE80211_CONF_PS) { + psmode = WMI_STA_PS_MODE_ENABLED; + param = WMI_STA_PS_PARAM_INACTIVITY_TIME; + + ret = ath10k_wmi_set_sta_ps_param(ar_iter->ar, + arvif->vdev_id, + param, + conf->dynamic_ps_timeout); + if (ret) { + ath10k_warn("Failed to set inactivity time for VDEV: %d\n", + arvif->vdev_id); + return; + } + + ar_iter->ret = ret; + } else { + psmode = WMI_STA_PS_MODE_DISABLED; + } + + ar_iter->ret = ath10k_wmi_set_psmode(ar_iter->ar, arvif->vdev_id, + psmode); + if (ar_iter->ret) + ath10k_warn("Failed to set PS Mode: %d for VDEV: %d\n", + psmode, arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, "Set PS Mode: %d for VDEV: %d\n", + psmode, arvif->vdev_id); +} + +/**********************/ +/* Station management */ +/**********************/ + +static void ath10k_peer_assoc_h_basic(struct ath10k *ar, + struct ath10k_vif *arvif, + struct ieee80211_sta *sta, + struct ieee80211_bss_conf *bss_conf, + struct wmi_peer_assoc_complete_arg *arg) +{ + memcpy(arg->addr, sta->addr, ETH_ALEN); + arg->vdev_id = arvif->vdev_id; + arg->peer_aid = sta->aid; + arg->peer_flags |= WMI_PEER_AUTH; + + if (arvif->vdev_type == WMI_VDEV_TYPE_STA) + /* + * Seems FW have problems with Power Save in STA + * mode when we setup this parameter to high (eg. 5). + * Often we see that FW don't send NULL (with clean P flags) + * frame even there is info about buffered frames in beacons. + * Sometimes we have to wait more than 10 seconds before FW + * will wakeup. Often sending one ping from AP to our device + * just fail (more than 50%). + * + * Seems setting this FW parameter to 1 couse FW + * will check every beacon and will wakup immediately + * after detection buffered data. + */ + arg->peer_listen_intval = 1; + else + arg->peer_listen_intval = ar->hw->conf.listen_interval; + + arg->peer_num_spatial_streams = 1; + + /* + * The assoc capabilities are available only in managed mode. + */ + if (arvif->vdev_type == WMI_VDEV_TYPE_STA && bss_conf) + arg->peer_caps = bss_conf->assoc_capability; +} + +static void ath10k_peer_assoc_h_crypto(struct ath10k *ar, + struct ath10k_vif *arvif, + struct wmi_peer_assoc_complete_arg *arg) +{ + struct ieee80211_vif *vif = arvif->vif; + struct ieee80211_bss_conf *info = &vif->bss_conf; + struct cfg80211_bss *bss; + const u8 *rsnie = NULL; + const u8 *wpaie = NULL; + + bss = cfg80211_get_bss(ar->hw->wiphy, ar->hw->conf.chandef.chan, + info->bssid, NULL, 0, 0, 0); + if (bss) { + const struct cfg80211_bss_ies *ies; + + rcu_read_lock(); + rsnie = ieee80211_bss_get_ie(bss, WLAN_EID_RSN); + + ies = rcu_dereference(bss->ies); + + wpaie = cfg80211_find_vendor_ie(WLAN_OUI_MICROSOFT, + WLAN_OUI_TYPE_MICROSOFT_WPA, + ies->data, + ies->len); + rcu_read_unlock(); + cfg80211_put_bss(ar->hw->wiphy, bss); + } + + /* FIXME: base on RSN IE/WPA IE is a correct idea? */ + if (rsnie || wpaie) { + ath10k_dbg(ATH10K_DBG_WMI, "%s: rsn ie found\n", __func__); + arg->peer_flags |= WMI_PEER_NEED_PTK_4_WAY; + } + + if (wpaie) { + ath10k_dbg(ATH10K_DBG_WMI, "%s: wpa ie found\n", __func__); + arg->peer_flags |= WMI_PEER_NEED_GTK_2_WAY; + } +} + +static void ath10k_peer_assoc_h_rates(struct ath10k *ar, + struct ieee80211_sta *sta, + struct wmi_peer_assoc_complete_arg *arg) +{ + struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates; + const struct ieee80211_supported_band *sband; + const struct ieee80211_rate *rates; + u32 ratemask; + int i; + + sband = ar->hw->wiphy->bands[ar->hw->conf.chandef.chan->band]; + ratemask = sta->supp_rates[ar->hw->conf.chandef.chan->band]; + rates = sband->bitrates; + + rateset->num_rates = 0; + + for (i = 0; i < 32; i++, ratemask >>= 1, rates++) { + if (!(ratemask & 1)) + continue; + + rateset->rates[rateset->num_rates] = rates->hw_value; + rateset->num_rates++; + } +} + +static void ath10k_peer_assoc_h_ht(struct ath10k *ar, + struct ieee80211_sta *sta, + struct wmi_peer_assoc_complete_arg *arg) +{ + const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; + int smps; + int i, n; + + if (!ht_cap->ht_supported) + return; + + arg->peer_flags |= WMI_PEER_HT; + arg->peer_max_mpdu = (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + + ht_cap->ampdu_factor)) - 1; + + arg->peer_mpdu_density = + ath10k_parse_mpdudensity(ht_cap->ampdu_density); + + arg->peer_ht_caps = ht_cap->cap; + arg->peer_rate_caps |= WMI_RC_HT_FLAG; + + if (ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING) + arg->peer_flags |= WMI_PEER_LDPC; + + if (sta->bandwidth >= IEEE80211_STA_RX_BW_40) { + arg->peer_flags |= WMI_PEER_40MHZ; + arg->peer_rate_caps |= WMI_RC_CW40_FLAG; + } + + if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20) + arg->peer_rate_caps |= WMI_RC_SGI_FLAG; + + if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40) + arg->peer_rate_caps |= WMI_RC_SGI_FLAG; + + if (ht_cap->cap & IEEE80211_HT_CAP_TX_STBC) { + arg->peer_rate_caps |= WMI_RC_TX_STBC_FLAG; + arg->peer_flags |= WMI_PEER_STBC; + } + + if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC) { + u32 stbc; + stbc = ht_cap->cap & IEEE80211_HT_CAP_RX_STBC; + stbc = stbc >> IEEE80211_HT_CAP_RX_STBC_SHIFT; + stbc = stbc << WMI_RC_RX_STBC_FLAG_S; + arg->peer_rate_caps |= stbc; + arg->peer_flags |= WMI_PEER_STBC; + } + + smps = ht_cap->cap & IEEE80211_HT_CAP_SM_PS; + smps >>= IEEE80211_HT_CAP_SM_PS_SHIFT; + + if (smps == WLAN_HT_CAP_SM_PS_STATIC) { + arg->peer_flags |= WMI_PEER_SPATIAL_MUX; + arg->peer_flags |= WMI_PEER_STATIC_MIMOPS; + } else if (smps == WLAN_HT_CAP_SM_PS_DYNAMIC) { + arg->peer_flags |= WMI_PEER_SPATIAL_MUX; + arg->peer_flags |= WMI_PEER_DYN_MIMOPS; + } + + if (ht_cap->mcs.rx_mask[1] && ht_cap->mcs.rx_mask[2]) + arg->peer_rate_caps |= WMI_RC_TS_FLAG; + else if (ht_cap->mcs.rx_mask[1]) + arg->peer_rate_caps |= WMI_RC_DS_FLAG; + + for (i = 0, n = 0; i < IEEE80211_HT_MCS_MASK_LEN*8; i++) + if (ht_cap->mcs.rx_mask[i/8] & (1 << i%8)) + arg->peer_ht_rates.rates[n++] = i; + + arg->peer_ht_rates.num_rates = n; + arg->peer_num_spatial_streams = max((n+7) / 8, 1); + + ath10k_dbg(ATH10K_DBG_MAC, "mcs cnt %d nss %d\n", + arg->peer_ht_rates.num_rates, + arg->peer_num_spatial_streams); +} + +static void ath10k_peer_assoc_h_qos_ap(struct ath10k *ar, + struct ath10k_vif *arvif, + struct ieee80211_sta *sta, + struct ieee80211_bss_conf *bss_conf, + struct wmi_peer_assoc_complete_arg *arg) +{ + u32 uapsd = 0; + u32 max_sp = 0; + + if (sta->wme) + arg->peer_flags |= WMI_PEER_QOS; + + if (sta->wme && sta->uapsd_queues) { + ath10k_dbg(ATH10K_DBG_MAC, "uapsd_queues: 0x%X, max_sp: %d\n", + sta->uapsd_queues, sta->max_sp); + + arg->peer_flags |= WMI_PEER_APSD; + arg->peer_flags |= WMI_RC_UAPSD_FLAG; + + if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) + uapsd |= WMI_AP_PS_UAPSD_AC3_DELIVERY_EN | + WMI_AP_PS_UAPSD_AC3_TRIGGER_EN; + if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) + uapsd |= WMI_AP_PS_UAPSD_AC2_DELIVERY_EN | + WMI_AP_PS_UAPSD_AC2_TRIGGER_EN; + if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) + uapsd |= WMI_AP_PS_UAPSD_AC1_DELIVERY_EN | + WMI_AP_PS_UAPSD_AC1_TRIGGER_EN; + if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) + uapsd |= WMI_AP_PS_UAPSD_AC0_DELIVERY_EN | + WMI_AP_PS_UAPSD_AC0_TRIGGER_EN; + + + if (sta->max_sp < MAX_WMI_AP_PS_PEER_PARAM_MAX_SP) + max_sp = sta->max_sp; + + ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, + sta->addr, + WMI_AP_PS_PEER_PARAM_UAPSD, + uapsd); + + ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, + sta->addr, + WMI_AP_PS_PEER_PARAM_MAX_SP, + max_sp); + + /* TODO setup this based on STA listen interval and + beacon interval. Currently we don't know + sta->listen_interval - mac80211 patch required. + Currently use 10 seconds */ + ath10k_wmi_set_ap_ps_param(ar, arvif->vdev_id, + sta->addr, + WMI_AP_PS_PEER_PARAM_AGEOUT_TIME, + 10); + } +} + +static void ath10k_peer_assoc_h_qos_sta(struct ath10k *ar, + struct ath10k_vif *arvif, + struct ieee80211_sta *sta, + struct ieee80211_bss_conf *bss_conf, + struct wmi_peer_assoc_complete_arg *arg) +{ + if (bss_conf->qos) + arg->peer_flags |= WMI_PEER_QOS; +} + +static void ath10k_peer_assoc_h_vht(struct ath10k *ar, + struct ieee80211_sta *sta, + struct wmi_peer_assoc_complete_arg *arg) +{ + const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap; + + if (!vht_cap->vht_supported) + return; + + arg->peer_flags |= WMI_PEER_VHT; + + arg->peer_vht_caps = vht_cap->cap; + + if (sta->bandwidth == IEEE80211_STA_RX_BW_80) + arg->peer_flags |= WMI_PEER_80MHZ; + + arg->peer_vht_rates.rx_max_rate = + __le16_to_cpu(vht_cap->vht_mcs.rx_highest); + arg->peer_vht_rates.rx_mcs_set = + __le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map); + arg->peer_vht_rates.tx_max_rate = + __le16_to_cpu(vht_cap->vht_mcs.tx_highest); + arg->peer_vht_rates.tx_mcs_set = + __le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map); + + ath10k_dbg(ATH10K_DBG_MAC, "mac vht peer\n"); +} + +static void ath10k_peer_assoc_h_qos(struct ath10k *ar, + struct ath10k_vif *arvif, + struct ieee80211_sta *sta, + struct ieee80211_bss_conf *bss_conf, + struct wmi_peer_assoc_complete_arg *arg) +{ + switch (arvif->vdev_type) { + case WMI_VDEV_TYPE_AP: + ath10k_peer_assoc_h_qos_ap(ar, arvif, sta, bss_conf, arg); + break; + case WMI_VDEV_TYPE_STA: + ath10k_peer_assoc_h_qos_sta(ar, arvif, sta, bss_conf, arg); + break; + default: + break; + } +} + +static void ath10k_peer_assoc_h_phymode(struct ath10k *ar, + struct ath10k_vif *arvif, + struct ieee80211_sta *sta, + struct wmi_peer_assoc_complete_arg *arg) +{ + enum wmi_phy_mode phymode = MODE_UNKNOWN; + + /* FIXME: add VHT */ + + switch (ar->hw->conf.chandef.chan->band) { + case IEEE80211_BAND_2GHZ: + if (sta->ht_cap.ht_supported) { + if (sta->bandwidth == IEEE80211_STA_RX_BW_40) + phymode = MODE_11NG_HT40; + else + phymode = MODE_11NG_HT20; + } else { + phymode = MODE_11G; + } + + break; + case IEEE80211_BAND_5GHZ: + if (sta->ht_cap.ht_supported) { + if (sta->bandwidth == IEEE80211_STA_RX_BW_40) + phymode = MODE_11NA_HT40; + else + phymode = MODE_11NA_HT20; + } else { + phymode = MODE_11A; + } + + break; + default: + break; + } + + arg->peer_phymode = phymode; + WARN_ON(phymode == MODE_UNKNOWN); +} + +static int ath10k_peer_assoc(struct ath10k *ar, + struct ath10k_vif *arvif, + struct ieee80211_sta *sta, + struct ieee80211_bss_conf *bss_conf) +{ + struct wmi_peer_assoc_complete_arg arg; + + memset(&arg, 0, sizeof(struct wmi_peer_assoc_complete_arg)); + + ath10k_peer_assoc_h_basic(ar, arvif, sta, bss_conf, &arg); + ath10k_peer_assoc_h_crypto(ar, arvif, &arg); + ath10k_peer_assoc_h_rates(ar, sta, &arg); + ath10k_peer_assoc_h_ht(ar, sta, &arg); + ath10k_peer_assoc_h_vht(ar, sta, &arg); + ath10k_peer_assoc_h_qos(ar, arvif, sta, bss_conf, &arg); + ath10k_peer_assoc_h_phymode(ar, arvif, sta, &arg); + + return ath10k_wmi_peer_assoc(ar, &arg); +} + +/* can be called only in mac80211 callbacks due to `key_count` usage */ +static void ath10k_bss_assoc(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *bss_conf) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + struct ieee80211_sta *ap_sta; + int ret; + + rcu_read_lock(); + + ap_sta = ieee80211_find_sta(vif, bss_conf->bssid); + if (!ap_sta) { + ath10k_warn("Failed to find station entry for %pM\n", + bss_conf->bssid); + rcu_read_unlock(); + return; + } + + ret = ath10k_peer_assoc(ar, arvif, ap_sta, bss_conf); + if (ret) { + ath10k_warn("Peer assoc failed for %pM\n", bss_conf->bssid); + rcu_read_unlock(); + return; + } + + rcu_read_unlock(); + + ret = ath10k_wmi_vdev_up(ar, arvif->vdev_id, bss_conf->aid, + bss_conf->bssid); + if (ret) + ath10k_warn("VDEV: %d up failed: ret %d\n", + arvif->vdev_id, ret); + else + ath10k_dbg(ATH10K_DBG_MAC, + "VDEV: %d associated, BSSID: %pM, AID: %d\n", + arvif->vdev_id, bss_conf->bssid, bss_conf->aid); +} + +/* + * FIXME: flush TIDs + */ +static void ath10k_bss_disassoc(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + int ret; + + /* + * For some reason, calling VDEV-DOWN before VDEV-STOP + * makes the FW to send frames via HTT after disassociation. + * No idea why this happens, even though VDEV-DOWN is supposed + * to be analogous to link down, so just stop the VDEV. + */ + ret = ath10k_vdev_stop(arvif); + if (!ret) + ath10k_dbg(ATH10K_DBG_MAC, "VDEV: %d stopped\n", + arvif->vdev_id); + + /* + * If we don't call VDEV-DOWN after VDEV-STOP FW will remain active and + * report beacons from previously associated network through HTT. + * This in turn would spam mac80211 WARN_ON if we bring down all + * interfaces as it expects there is no rx when no interface is + * running. + */ + ret = ath10k_wmi_vdev_down(ar, arvif->vdev_id); + if (ret) + ath10k_dbg(ATH10K_DBG_MAC, "VDEV: %d ath10k_wmi_vdev_down failed (%d)\n", + arvif->vdev_id, ret); + + ath10k_wmi_flush_tx(ar); + + arvif->def_wep_key_index = 0; +} + +static int ath10k_station_assoc(struct ath10k *ar, struct ath10k_vif *arvif, + struct ieee80211_sta *sta) +{ + int ret = 0; + + ret = ath10k_peer_assoc(ar, arvif, sta, NULL); + if (ret) { + ath10k_warn("WMI peer assoc failed for %pM\n", sta->addr); + return ret; + } + + ret = ath10k_install_peer_wep_keys(arvif, sta->addr); + if (ret) { + ath10k_warn("could not install peer wep keys (%d)\n", ret); + return ret; + } + + return ret; +} + +static int ath10k_station_disassoc(struct ath10k *ar, struct ath10k_vif *arvif, + struct ieee80211_sta *sta) +{ + int ret = 0; + + ret = ath10k_clear_peer_keys(arvif, sta->addr); + if (ret) { + ath10k_warn("could not clear all peer wep keys (%d)\n", ret); + return ret; + } + + return ret; +} + +/**************/ +/* Regulatory */ +/**************/ + +static int ath10k_update_channel_list(struct ath10k *ar) +{ + struct ieee80211_hw *hw = ar->hw; + struct ieee80211_supported_band **bands; + enum ieee80211_band band; + struct ieee80211_channel *channel; + struct wmi_scan_chan_list_arg arg = {0}; + struct wmi_channel_arg *ch; + bool passive; + int len; + int ret; + int i; + + bands = hw->wiphy->bands; + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + if (!bands[band]) + continue; + + for (i = 0; i < bands[band]->n_channels; i++) { + if (bands[band]->channels[i].flags & + IEEE80211_CHAN_DISABLED) + continue; + + arg.n_channels++; + } + } + + len = sizeof(struct wmi_channel_arg) * arg.n_channels; + arg.channels = kzalloc(len, GFP_KERNEL); + if (!arg.channels) + return -ENOMEM; + + ch = arg.channels; + for (band = 0; band < IEEE80211_NUM_BANDS; band++) { + if (!bands[band]) + continue; + + for (i = 0; i < bands[band]->n_channels; i++) { + channel = &bands[band]->channels[i]; + + if (channel->flags & IEEE80211_CHAN_DISABLED) + continue; + + ch->allow_ht = true; + + /* FIXME: when should we really allow VHT? */ + ch->allow_vht = true; + + ch->allow_ibss = + !(channel->flags & IEEE80211_CHAN_NO_IBSS); + + ch->ht40plus = + !(channel->flags & IEEE80211_CHAN_NO_HT40PLUS); + + passive = channel->flags & IEEE80211_CHAN_PASSIVE_SCAN; + ch->passive = passive; + + ch->freq = channel->center_freq; + ch->min_power = channel->max_power * 3; + ch->max_power = channel->max_power * 4; + ch->max_reg_power = channel->max_reg_power * 4; + ch->max_antenna_gain = channel->max_antenna_gain; + ch->reg_class_id = 0; /* FIXME */ + + /* FIXME: why use only legacy modes, why not any + * HT/VHT modes? Would that even make any + * difference? */ + if (channel->band == IEEE80211_BAND_2GHZ) + ch->mode = MODE_11G; + else + ch->mode = MODE_11A; + + if (WARN_ON_ONCE(ch->mode == MODE_UNKNOWN)) + continue; + + ath10k_dbg(ATH10K_DBG_WMI, + "%s: [%zd/%d] freq %d maxpower %d regpower %d antenna %d mode %d\n", + __func__, ch - arg.channels, arg.n_channels, + ch->freq, ch->max_power, ch->max_reg_power, + ch->max_antenna_gain, ch->mode); + + ch++; + } + } + + ret = ath10k_wmi_scan_chan_list(ar, &arg); + kfree(arg.channels); + + return ret; +} + +static void ath10k_reg_notifier(struct wiphy *wiphy, + struct regulatory_request *request) +{ + struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy); + struct reg_dmn_pair_mapping *regpair; + struct ath10k *ar = hw->priv; + int ret; + + ath_reg_notifier_apply(wiphy, request, &ar->ath_common.regulatory); + + ret = ath10k_update_channel_list(ar); + if (ret) + ath10k_warn("could not update channel list (%d)\n", ret); + + regpair = ar->ath_common.regulatory.regpair; + /* Target allows setting up per-band regdomain but ath_common provides + * a combined one only */ + ret = ath10k_wmi_pdev_set_regdomain(ar, + regpair->regDmnEnum, + regpair->regDmnEnum, /* 2ghz */ + regpair->regDmnEnum, /* 5ghz */ + regpair->reg_2ghz_ctl, + regpair->reg_5ghz_ctl); + if (ret) + ath10k_warn("could not set pdev regdomain (%d)\n", ret); +} + +/***************/ +/* TX handlers */ +/***************/ + +/* + * Frames sent to the FW have to be in "Native Wifi" format. + * Strip the QoS field from the 802.11 header. + */ +static void ath10k_tx_h_qos_workaround(struct ieee80211_hw *hw, + struct ieee80211_tx_control *control, + struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr = (void *)skb->data; + u8 *qos_ctl; + + if (!ieee80211_is_data_qos(hdr->frame_control)) + return; + + qos_ctl = ieee80211_get_qos_ctl(hdr); + memmove(qos_ctl, qos_ctl + IEEE80211_QOS_CTL_LEN, + skb->len - ieee80211_hdrlen(hdr->frame_control)); + skb_trim(skb, skb->len - IEEE80211_QOS_CTL_LEN); +} + +static void ath10k_tx_h_update_wep_key(struct sk_buff *skb) +{ + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_vif *vif = info->control.vif; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + struct ath10k *ar = arvif->ar; + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + struct ieee80211_key_conf *key = info->control.hw_key; + int ret; + + /* TODO AP mode should be implemented */ + if (vif->type != NL80211_IFTYPE_STATION) + return; + + if (!ieee80211_has_protected(hdr->frame_control)) + return; + + if (!key) + return; + + if (key->cipher != WLAN_CIPHER_SUITE_WEP40 && + key->cipher != WLAN_CIPHER_SUITE_WEP104) + return; + + if (key->keyidx == arvif->def_wep_key_index) + return; + + ath10k_dbg(ATH10K_DBG_MAC, "new wep keyidx will be %d\n", key->keyidx); + + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_DEF_KEYID, + key->keyidx); + if (ret) { + ath10k_warn("could not update wep keyidx (%d)\n", ret); + return; + } + + arvif->def_wep_key_index = key->keyidx; +} + +static void ath10k_tx_h_add_p2p_noa_ie(struct ath10k *ar, struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_vif *vif = info->control.vif; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + + /* This is case only for P2P_GO */ + if (arvif->vdev_type != WMI_VDEV_TYPE_AP || + arvif->vdev_subtype != WMI_VDEV_SUBTYPE_P2P_GO) + return; + + if (unlikely(ieee80211_is_probe_resp(hdr->frame_control))) { + spin_lock_bh(&ar->data_lock); + if (arvif->u.ap.noa_data) + if (!pskb_expand_head(skb, 0, arvif->u.ap.noa_len, + GFP_ATOMIC)) + memcpy(skb_put(skb, arvif->u.ap.noa_len), + arvif->u.ap.noa_data, + arvif->u.ap.noa_len); + spin_unlock_bh(&ar->data_lock); + } +} + +static void ath10k_tx_htt(struct ath10k *ar, struct sk_buff *skb) +{ + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + int ret; + + if (ieee80211_is_mgmt(hdr->frame_control)) + ret = ath10k_htt_mgmt_tx(ar->htt, skb); + else if (ieee80211_is_nullfunc(hdr->frame_control)) + /* FW does not report tx status properly for NullFunc frames + * unless they are sent through mgmt tx path. mac80211 sends + * those frames when it detects link/beacon loss and depends on + * the tx status to be correct. */ + ret = ath10k_htt_mgmt_tx(ar->htt, skb); + else + ret = ath10k_htt_tx(ar->htt, skb); + + if (ret) { + ath10k_warn("tx failed (%d). dropping packet.\n", ret); + ieee80211_free_txskb(ar->hw, skb); + } +} + +void ath10k_offchan_tx_purge(struct ath10k *ar) +{ + struct sk_buff *skb; + + for (;;) { + skb = skb_dequeue(&ar->offchan_tx_queue); + if (!skb) + break; + + ieee80211_free_txskb(ar->hw, skb); + } +} + +void ath10k_offchan_tx_work(struct work_struct *work) +{ + struct ath10k *ar = container_of(work, struct ath10k, offchan_tx_work); + struct ath10k_peer *peer; + struct ieee80211_hdr *hdr; + struct sk_buff *skb; + const u8 *peer_addr; + int vdev_id; + int ret; + + /* FW requirement: We must create a peer before FW will send out + * an offchannel frame. Otherwise the frame will be stuck and + * never transmitted. We delete the peer upon tx completion. + * It is unlikely that a peer for offchannel tx will already be + * present. However it may be in some rare cases so account for that. + * Otherwise we might remove a legitimate peer and break stuff. */ + + for (;;) { + skb = skb_dequeue(&ar->offchan_tx_queue); + if (!skb) + break; + + mutex_lock(&ar->conf_mutex); + + ath10k_dbg(ATH10K_DBG_MAC, "processing offchannel skb %p\n", + skb); + + hdr = (struct ieee80211_hdr *)skb->data; + peer_addr = ieee80211_get_DA(hdr); + vdev_id = ATH10K_SKB_CB(skb)->htt.vdev_id; + + spin_lock_bh(&ar->data_lock); + peer = ath10k_peer_find(ar, vdev_id, peer_addr); + spin_unlock_bh(&ar->data_lock); + + if (peer) + ath10k_dbg(ATH10K_DBG_MAC, "peer %pM on vdev %d already present\n", + peer_addr, vdev_id); + + if (!peer) { + ret = ath10k_peer_create(ar, vdev_id, peer_addr); + if (ret) + ath10k_warn("peer %pM on vdev %d not created (%d)\n", + peer_addr, vdev_id, ret); + } + + spin_lock_bh(&ar->data_lock); + INIT_COMPLETION(ar->offchan_tx_completed); + ar->offchan_tx_skb = skb; + spin_unlock_bh(&ar->data_lock); + + ath10k_tx_htt(ar, skb); + + ret = wait_for_completion_timeout(&ar->offchan_tx_completed, + 3 * HZ); + if (ret <= 0) + ath10k_warn("timed out waiting for offchannel skb %p\n", + skb); + + if (!peer) { + ret = ath10k_peer_delete(ar, vdev_id, peer_addr); + if (ret) + ath10k_warn("peer %pM on vdev %d not deleted (%d)\n", + peer_addr, vdev_id, ret); + } + + mutex_unlock(&ar->conf_mutex); + } +} + +/************/ +/* Scanning */ +/************/ + +/* + * This gets called if we dont get a heart-beat during scan. + * This may indicate the FW has hung and we need to abort the + * scan manually to prevent cancel_hw_scan() from deadlocking + */ +void ath10k_reset_scan(unsigned long ptr) +{ + struct ath10k *ar = (struct ath10k *)ptr; + + spin_lock_bh(&ar->data_lock); + if (!ar->scan.in_progress) { + spin_unlock_bh(&ar->data_lock); + return; + } + + ath10k_warn("scan timeout. resetting. fw issue?\n"); + + if (ar->scan.is_roc) + ieee80211_remain_on_channel_expired(ar->hw); + else + ieee80211_scan_completed(ar->hw, 1 /* aborted */); + + ar->scan.in_progress = false; + complete_all(&ar->scan.completed); + spin_unlock_bh(&ar->data_lock); +} + +static int ath10k_abort_scan(struct ath10k *ar) +{ + struct wmi_stop_scan_arg arg = { + .req_id = 1, /* FIXME */ + .req_type = WMI_SCAN_STOP_ONE, + .u.scan_id = ATH10K_SCAN_ID, + }; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + del_timer_sync(&ar->scan.timeout); + + spin_lock_bh(&ar->data_lock); + if (!ar->scan.in_progress) { + spin_unlock_bh(&ar->data_lock); + return 0; + } + + ar->scan.aborting = true; + spin_unlock_bh(&ar->data_lock); + + ret = ath10k_wmi_stop_scan(ar, &arg); + if (ret) { + ath10k_warn("could not submit wmi stop scan (%d)\n", ret); + return -EIO; + } + + ath10k_wmi_flush_tx(ar); + + ret = wait_for_completion_timeout(&ar->scan.completed, 3*HZ); + if (ret == 0) + ath10k_warn("timed out while waiting for scan to stop\n"); + + /* scan completion may be done right after we timeout here, so let's + * check the in_progress and tell mac80211 scan is completed. if we + * don't do that and FW fails to send us scan completion indication + * then userspace won't be able to scan anymore */ + ret = 0; + + spin_lock_bh(&ar->data_lock); + if (ar->scan.in_progress) { + ath10k_warn("could not stop scan. its still in progress\n"); + ar->scan.in_progress = false; + ath10k_offchan_tx_purge(ar); + ret = -ETIMEDOUT; + } + spin_unlock_bh(&ar->data_lock); + + return ret; +} + +static int ath10k_start_scan(struct ath10k *ar, + const struct wmi_start_scan_arg *arg) +{ + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + ret = ath10k_wmi_start_scan(ar, arg); + if (ret) + return ret; + + /* make sure we submit the command so the completion + * timeout makes sense */ + ath10k_wmi_flush_tx(ar); + + ret = wait_for_completion_timeout(&ar->scan.started, 1*HZ); + if (ret == 0) { + ath10k_abort_scan(ar); + return ret; + } + + /* the scan can complete earlier, before we even + * start the timer. in that case the timer handler + * checks ar->scan.in_progress and bails out if its + * false. Add a 200ms margin to account event/command + * processing. */ + mod_timer(&ar->scan.timeout, jiffies + + msecs_to_jiffies(arg->max_scan_time+200)); + return 0; +} + +/**********************/ +/* mac80211 callbacks */ +/**********************/ + +static void ath10k_tx(struct ieee80211_hw *hw, + struct ieee80211_tx_control *control, + struct sk_buff *skb) +{ + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data; + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = NULL; + u32 vdev_id = 0; + u8 tid; + + if (info->control.vif) { + arvif = ath10k_vif_to_arvif(info->control.vif); + vdev_id = arvif->vdev_id; + } else if (ar->monitor_enabled) { + vdev_id = ar->monitor_vdev_id; + } + + /* We should disable CCK RATE due to P2P */ + if (info->flags & IEEE80211_TX_CTL_NO_CCK_RATE) + ath10k_dbg(ATH10K_DBG_MAC, "IEEE80211_TX_CTL_NO_CCK_RATE\n"); + + /* we must calculate tid before we apply qos workaround + * as we'd lose the qos control field */ + tid = HTT_DATA_TX_EXT_TID_NON_QOS_MCAST_BCAST; + if (ieee80211_is_data_qos(hdr->frame_control) && + is_unicast_ether_addr(ieee80211_get_DA(hdr))) { + u8 *qc = ieee80211_get_qos_ctl(hdr); + tid = qc[0] & IEEE80211_QOS_CTL_TID_MASK; + } + + ath10k_tx_h_qos_workaround(hw, control, skb); + ath10k_tx_h_update_wep_key(skb); + ath10k_tx_h_add_p2p_noa_ie(ar, skb); + ath10k_tx_h_seq_no(skb); + + memset(ATH10K_SKB_CB(skb), 0, sizeof(*ATH10K_SKB_CB(skb))); + ATH10K_SKB_CB(skb)->htt.vdev_id = vdev_id; + ATH10K_SKB_CB(skb)->htt.tid = tid; + + if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN) { + spin_lock_bh(&ar->data_lock); + ATH10K_SKB_CB(skb)->htt.is_offchan = true; + ATH10K_SKB_CB(skb)->htt.vdev_id = ar->scan.vdev_id; + spin_unlock_bh(&ar->data_lock); + + ath10k_dbg(ATH10K_DBG_MAC, "queued offchannel skb %p\n", skb); + + skb_queue_tail(&ar->offchan_tx_queue, skb); + ieee80211_queue_work(hw, &ar->offchan_tx_work); + return; + } + + ath10k_tx_htt(ar, skb); +} + +/* + * Initialize various parameters with default vaules. + */ +static int ath10k_start(struct ieee80211_hw *hw) +{ + struct ath10k *ar = hw->priv; + int ret; + + ret = ath10k_wmi_pdev_set_param(ar, WMI_PDEV_PARAM_PMF_QOS, 1); + if (ret) + ath10k_warn("could not enable WMI_PDEV_PARAM_PMF_QOS (%d)\n", + ret); + + ret = ath10k_wmi_pdev_set_param(ar, WMI_PDEV_PARAM_DYNAMIC_BW, 0); + if (ret) + ath10k_warn("could not init WMI_PDEV_PARAM_DYNAMIC_BW (%d)\n", + ret); + + return 0; +} + +static void ath10k_stop(struct ieee80211_hw *hw) +{ + struct ath10k *ar = hw->priv; + + /* avoid leaks in case FW never confirms scan for offchannel */ + cancel_work_sync(&ar->offchan_tx_work); + ath10k_offchan_tx_purge(ar); +} + +static int ath10k_config(struct ieee80211_hw *hw, u32 changed) +{ + struct ath10k_generic_iter ar_iter; + struct ath10k *ar = hw->priv; + struct ieee80211_conf *conf = &hw->conf; + int ret = 0; + u32 flags; + + mutex_lock(&ar->conf_mutex); + + if (changed & IEEE80211_CONF_CHANGE_CHANNEL) { + ath10k_dbg(ATH10K_DBG_MAC, "Config channel %d mhz\n", + conf->chandef.chan->center_freq); + spin_lock_bh(&ar->data_lock); + ar->rx_channel = conf->chandef.chan; + spin_unlock_bh(&ar->data_lock); + } + + if (changed & IEEE80211_CONF_CHANGE_PS) { + memset(&ar_iter, 0, sizeof(struct ath10k_generic_iter)); + ar_iter.ar = ar; + flags = IEEE80211_IFACE_ITER_RESUME_ALL; + + ieee80211_iterate_active_interfaces_atomic(hw, + flags, + ath10k_ps_iter, + &ar_iter); + + ret = ar_iter.ret; + } + + if (changed & IEEE80211_CONF_CHANGE_MONITOR) { + if (conf->flags & IEEE80211_CONF_MONITOR) + ret = ath10k_monitor_create(ar); + else + ret = ath10k_monitor_destroy(ar); + } + + mutex_unlock(&ar->conf_mutex); + return ret; +} + +/* + * TODO: + * Figure out how to handle WMI_VDEV_SUBTYPE_P2P_DEVICE, + * because we will send mgmt frames without CCK. This requirement + * for P2P_FIND/GO_NEG should be handled by checking CCK flag + * in the TX packet. + */ +static int ath10k_add_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + enum wmi_sta_powersave_param param; + int ret = 0; + u32 value; + int bit; + + mutex_lock(&ar->conf_mutex); + + arvif->ar = ar; + arvif->vif = vif; + + if ((vif->type == NL80211_IFTYPE_MONITOR) && ar->monitor_present) { + ath10k_warn("Only one monitor interface allowed\n"); + ret = -EBUSY; + goto exit; + } + + bit = ffs(ar->free_vdev_map); + if (bit == 0) { + ret = -EBUSY; + goto exit; + } + + arvif->vdev_id = bit - 1; + arvif->vdev_subtype = WMI_VDEV_SUBTYPE_NONE; + ar->free_vdev_map &= ~(1 << arvif->vdev_id); + + if (ar->p2p) + arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_DEVICE; + + switch (vif->type) { + case NL80211_IFTYPE_UNSPECIFIED: + case NL80211_IFTYPE_STATION: + arvif->vdev_type = WMI_VDEV_TYPE_STA; + if (vif->p2p) + arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_CLIENT; + break; + case NL80211_IFTYPE_ADHOC: + arvif->vdev_type = WMI_VDEV_TYPE_IBSS; + break; + case NL80211_IFTYPE_AP: + arvif->vdev_type = WMI_VDEV_TYPE_AP; + + if (vif->p2p) + arvif->vdev_subtype = WMI_VDEV_SUBTYPE_P2P_GO; + break; + case NL80211_IFTYPE_MONITOR: + arvif->vdev_type = WMI_VDEV_TYPE_MONITOR; + break; + default: + WARN_ON(1); + break; + } + + ath10k_dbg(ATH10K_DBG_MAC, "Add interface: id %d type %d subtype %d\n", + arvif->vdev_id, arvif->vdev_type, arvif->vdev_subtype); + + ret = ath10k_wmi_vdev_create(ar, arvif->vdev_id, arvif->vdev_type, + arvif->vdev_subtype, vif->addr); + if (ret) { + ath10k_warn("WMI vdev create failed: ret %d\n", ret); + goto exit; + } + + ret = ath10k_wmi_vdev_set_param(ar, 0, WMI_VDEV_PARAM_DEF_KEYID, + arvif->def_wep_key_index); + if (ret) + ath10k_warn("Failed to set default keyid: %d\n", ret); + + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_TX_ENCAP_TYPE, + ATH10K_HW_TXRX_NATIVE_WIFI); + if (ret) + ath10k_warn("Failed to set TX encap: %d\n", ret); + + if (arvif->vdev_type == WMI_VDEV_TYPE_AP) { + ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr); + if (ret) { + ath10k_warn("Failed to create peer for AP: %d\n", ret); + goto exit; + } + } + + if (arvif->vdev_type == WMI_VDEV_TYPE_STA) { + param = WMI_STA_PS_PARAM_RX_WAKE_POLICY; + value = WMI_STA_PS_RX_WAKE_POLICY_WAKE; + ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, + param, value); + if (ret) + ath10k_warn("Failed to set RX wake policy: %d\n", ret); + + param = WMI_STA_PS_PARAM_TX_WAKE_THRESHOLD; + value = WMI_STA_PS_TX_WAKE_THRESHOLD_ALWAYS; + ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, + param, value); + if (ret) + ath10k_warn("Failed to set TX wake thresh: %d\n", ret); + + param = WMI_STA_PS_PARAM_PSPOLL_COUNT; + value = WMI_STA_PS_PSPOLL_COUNT_NO_MAX; + ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, + param, value); + if (ret) + ath10k_warn("Failed to set PSPOLL count: %d\n", ret); + } + + if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR) + ar->monitor_present = true; + +exit: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static void ath10k_remove_interface(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + int ret; + + mutex_lock(&ar->conf_mutex); + + ath10k_dbg(ATH10K_DBG_MAC, "Remove interface: id %d\n", arvif->vdev_id); + + ar->free_vdev_map |= 1 << (arvif->vdev_id); + + if (arvif->vdev_type == WMI_VDEV_TYPE_AP) { + ret = ath10k_peer_delete(arvif->ar, arvif->vdev_id, vif->addr); + if (ret) + ath10k_warn("Failed to remove peer for AP: %d\n", ret); + + kfree(arvif->u.ap.noa_data); + } + + ret = ath10k_wmi_vdev_delete(ar, arvif->vdev_id); + if (ret) + ath10k_warn("WMI vdev delete failed: %d\n", ret); + + if (arvif->vdev_type == WMI_VDEV_TYPE_MONITOR) + ar->monitor_present = false; + + ath10k_peer_cleanup(ar, arvif->vdev_id); + + mutex_unlock(&ar->conf_mutex); +} + +/* + * FIXME: Has to be verified. + */ +#define SUPPORTED_FILTERS \ + (FIF_PROMISC_IN_BSS | \ + FIF_ALLMULTI | \ + FIF_CONTROL | \ + FIF_PSPOLL | \ + FIF_OTHER_BSS | \ + FIF_BCN_PRBRESP_PROMISC | \ + FIF_PROBE_REQ | \ + FIF_FCSFAIL) + +static void ath10k_configure_filter(struct ieee80211_hw *hw, + unsigned int changed_flags, + unsigned int *total_flags, + u64 multicast) +{ + struct ath10k *ar = hw->priv; + int ret; + + mutex_lock(&ar->conf_mutex); + + changed_flags &= SUPPORTED_FILTERS; + *total_flags &= SUPPORTED_FILTERS; + ar->filter_flags = *total_flags; + + if ((ar->filter_flags & FIF_PROMISC_IN_BSS) && + !ar->monitor_enabled) { + ret = ath10k_monitor_start(ar, ar->monitor_vdev_id); + if (ret) + ath10k_warn("Unable to start monitor mode\n"); + else + ath10k_dbg(ATH10K_DBG_MAC, "Monitor mode started\n"); + } else if (!(ar->filter_flags & FIF_PROMISC_IN_BSS) && + ar->monitor_enabled) { + ret = ath10k_monitor_stop(ar); + if (ret) + ath10k_warn("Unable to stop monitor mode\n"); + else + ath10k_dbg(ATH10K_DBG_MAC, "Monitor mode stopped\n"); + } + + mutex_unlock(&ar->conf_mutex); +} + +static void ath10k_bss_info_changed(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_bss_conf *info, + u32 changed) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + int ret = 0; + + mutex_lock(&ar->conf_mutex); + + if (changed & BSS_CHANGED_IBSS) + ath10k_control_ibss(arvif, info, vif->addr); + + if (changed & BSS_CHANGED_BEACON_INT) { + arvif->beacon_interval = info->beacon_int; + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_BEACON_INTERVAL, + arvif->beacon_interval); + if (ret) + ath10k_warn("Failed to set beacon interval for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Beacon interval: %d set for VDEV: %d\n", + arvif->beacon_interval, arvif->vdev_id); + } + + if (changed & BSS_CHANGED_BEACON) { + ret = ath10k_wmi_pdev_set_param(ar, + WMI_PDEV_PARAM_BEACON_TX_MODE, + WMI_BEACON_STAGGERED_MODE); + if (ret) + ath10k_warn("Failed to set beacon mode for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set staggered beacon mode for VDEV: %d\n", + arvif->vdev_id); + } + + if (changed & BSS_CHANGED_BEACON_INFO) { + arvif->dtim_period = info->dtim_period; + + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_DTIM_PERIOD, + arvif->dtim_period); + if (ret) + ath10k_warn("Failed to set dtim period for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set dtim period: %d for VDEV: %d\n", + arvif->dtim_period, arvif->vdev_id); + } + + if (changed & BSS_CHANGED_SSID && + vif->type == NL80211_IFTYPE_AP) { + arvif->u.ap.ssid_len = info->ssid_len; + if (info->ssid_len) + memcpy(arvif->u.ap.ssid, info->ssid, info->ssid_len); + arvif->u.ap.hidden_ssid = info->hidden_ssid; + } + + if (changed & BSS_CHANGED_BSSID) { + if (!is_zero_ether_addr(info->bssid)) { + ret = ath10k_peer_create(ar, arvif->vdev_id, + info->bssid); + if (ret) + ath10k_warn("Failed to add peer: %pM for VDEV: %d\n", + info->bssid, arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Added peer: %pM for VDEV: %d\n", + info->bssid, arvif->vdev_id); + + + if (vif->type == NL80211_IFTYPE_STATION) { + /* + * this is never erased as we it for crypto key + * clearing; this is FW requirement + */ + memcpy(arvif->u.sta.bssid, info->bssid, + ETH_ALEN); + + ret = ath10k_vdev_start(arvif); + if (!ret) + ath10k_dbg(ATH10K_DBG_MAC, + "VDEV: %d started with BSSID: %pM\n", + arvif->vdev_id, info->bssid); + } + + /* + * Mac80211 does not keep IBSS bssid when leaving IBSS, + * so driver need to store it. It is needed when leaving + * IBSS in order to remove BSSID peer. + */ + if (vif->type == NL80211_IFTYPE_ADHOC) + memcpy(arvif->u.ibss.bssid, info->bssid, + ETH_ALEN); + } + } + + if (changed & BSS_CHANGED_BEACON_ENABLED) + ath10k_control_beaconing(arvif, info); + + if (changed & BSS_CHANGED_ERP_CTS_PROT) { + u32 cts_prot; + if (info->use_cts_prot) + cts_prot = 1; + else + cts_prot = 0; + + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_ENABLE_RTSCTS, + cts_prot); + if (ret) + ath10k_warn("Failed to set CTS prot for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set CTS prot: %d for VDEV: %d\n", + cts_prot, arvif->vdev_id); + } + + if (changed & BSS_CHANGED_ERP_SLOT) { + u32 slottime; + if (info->use_short_slot) + slottime = WMI_VDEV_SLOT_TIME_SHORT; /* 9us */ + + else + slottime = WMI_VDEV_SLOT_TIME_LONG; /* 20us */ + + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_SLOT_TIME, + slottime); + if (ret) + ath10k_warn("Failed to set erp slot for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set slottime: %d for VDEV: %d\n", + slottime, arvif->vdev_id); + } + + if (changed & BSS_CHANGED_ERP_PREAMBLE) { + u32 preamble; + if (info->use_short_preamble) + preamble = WMI_VDEV_PREAMBLE_SHORT; + else + preamble = WMI_VDEV_PREAMBLE_LONG; + + ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, + WMI_VDEV_PARAM_PREAMBLE, + preamble); + if (ret) + ath10k_warn("Failed to set preamble for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set preamble: %d for VDEV: %d\n", + preamble, arvif->vdev_id); + } + + if (changed & BSS_CHANGED_ASSOC) { + if (info->assoc) + ath10k_bss_assoc(hw, vif, info); + } + + mutex_unlock(&ar->conf_mutex); +} + +static int ath10k_hw_scan(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct cfg80211_scan_request *req) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + struct wmi_start_scan_arg arg; + int ret = 0; + int i; + + mutex_lock(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + if (ar->scan.in_progress) { + spin_unlock_bh(&ar->data_lock); + ret = -EBUSY; + goto exit; + } + + INIT_COMPLETION(ar->scan.started); + INIT_COMPLETION(ar->scan.completed); + ar->scan.in_progress = true; + ar->scan.aborting = false; + ar->scan.is_roc = false; + ar->scan.vdev_id = arvif->vdev_id; + spin_unlock_bh(&ar->data_lock); + + memset(&arg, 0, sizeof(arg)); + ath10k_wmi_start_scan_init(ar, &arg); + arg.vdev_id = arvif->vdev_id; + arg.scan_id = ATH10K_SCAN_ID; + + if (!req->no_cck) + arg.scan_ctrl_flags |= WMI_SCAN_ADD_CCK_RATES; + + if (req->ie_len) { + arg.ie_len = req->ie_len; + memcpy(arg.ie, req->ie, arg.ie_len); + } + + if (req->n_ssids) { + arg.n_ssids = req->n_ssids; + for (i = 0; i < arg.n_ssids; i++) { + arg.ssids[i].len = req->ssids[i].ssid_len; + arg.ssids[i].ssid = req->ssids[i].ssid; + } + } + + if (req->n_channels) { + arg.n_channels = req->n_channels; + for (i = 0; i < arg.n_channels; i++) + arg.channels[i] = req->channels[i]->center_freq; + } + + ret = ath10k_start_scan(ar, &arg); + if (ret) { + ath10k_warn("could not start hw scan (%d)\n", ret); + spin_lock_bh(&ar->data_lock); + ar->scan.in_progress = false; + spin_unlock_bh(&ar->data_lock); + } + +exit: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static void ath10k_cancel_hw_scan(struct ieee80211_hw *hw, + struct ieee80211_vif *vif) +{ + struct ath10k *ar = hw->priv; + int ret; + + mutex_lock(&ar->conf_mutex); + ret = ath10k_abort_scan(ar); + if (ret) { + ath10k_warn("couldn't abort scan (%d). forcefully sending scan completion to mac80211\n", + ret); + ieee80211_scan_completed(hw, 1 /* aborted */); + } + mutex_unlock(&ar->conf_mutex); +} + +static int ath10k_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, + struct ieee80211_vif *vif, struct ieee80211_sta *sta, + struct ieee80211_key_conf *key) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + struct ath10k_peer *peer; + const u8 *peer_addr; + bool is_wep = key->cipher == WLAN_CIPHER_SUITE_WEP40 || + key->cipher == WLAN_CIPHER_SUITE_WEP104; + int ret = 0; + + if (key->keyidx > WMI_MAX_KEY_INDEX) + return -ENOSPC; + + mutex_lock(&ar->conf_mutex); + + if (sta) + peer_addr = sta->addr; + else if (arvif->vdev_type == WMI_VDEV_TYPE_STA) + peer_addr = vif->bss_conf.bssid; + else + peer_addr = vif->addr; + + key->hw_key_idx = key->keyidx; + + /* the peer should not disappear in mid-way (unless FW goes awry) since + * we already hold conf_mutex. we just make sure its there now. */ + spin_lock_bh(&ar->data_lock); + peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr); + spin_unlock_bh(&ar->data_lock); + + if (!peer) { + if (cmd == SET_KEY) { + ath10k_warn("cannot install key for non-existent peer %pM\n", + peer_addr); + ret = -EOPNOTSUPP; + goto exit; + } else { + /* if the peer doesn't exist there is no key to disable + * anymore */ + goto exit; + } + } + + if (is_wep) { + if (cmd == SET_KEY) + arvif->wep_keys[key->keyidx] = key; + else + arvif->wep_keys[key->keyidx] = NULL; + + if (cmd == DISABLE_KEY) + ath10k_clear_vdev_key(arvif, key); + } + + ret = ath10k_install_key(arvif, key, cmd, peer_addr); + if (ret) { + ath10k_warn("ath10k_install_key failed (%d)\n", ret); + goto exit; + } + + spin_lock_bh(&ar->data_lock); + peer = ath10k_peer_find(ar, arvif->vdev_id, peer_addr); + if (peer && cmd == SET_KEY) + peer->keys[key->keyidx] = key; + else if (peer && cmd == DISABLE_KEY) + peer->keys[key->keyidx] = NULL; + else if (peer == NULL) + /* impossible unless FW goes crazy */ + ath10k_warn("peer %pM disappeared!\n", peer_addr); + spin_unlock_bh(&ar->data_lock); + +exit: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static int ath10k_sta_state(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + enum ieee80211_sta_state old_state, + enum ieee80211_sta_state new_state) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + int ret = 0; + + mutex_lock(&ar->conf_mutex); + + if (old_state == IEEE80211_STA_NOTEXIST && + new_state == IEEE80211_STA_NONE && + vif->type != NL80211_IFTYPE_STATION) { + /* + * New station addition. + */ + ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr); + if (ret) + ath10k_warn("Failed to add peer: %pM for VDEV: %d\n", + sta->addr, arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Added peer: %pM for VDEV: %d\n", + sta->addr, arvif->vdev_id); + } else if ((old_state == IEEE80211_STA_NONE && + new_state == IEEE80211_STA_NOTEXIST)) { + /* + * Existing station deletion. + */ + ret = ath10k_peer_delete(ar, arvif->vdev_id, sta->addr); + if (ret) + ath10k_warn("Failed to delete peer: %pM for VDEV: %d\n", + sta->addr, arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Removed peer: %pM for VDEV: %d\n", + sta->addr, arvif->vdev_id); + + if (vif->type == NL80211_IFTYPE_STATION) + ath10k_bss_disassoc(hw, vif); + } else if (old_state == IEEE80211_STA_AUTH && + new_state == IEEE80211_STA_ASSOC && + (vif->type == NL80211_IFTYPE_AP || + vif->type == NL80211_IFTYPE_ADHOC)) { + /* + * New association. + */ + ret = ath10k_station_assoc(ar, arvif, sta); + if (ret) + ath10k_warn("Failed to associate station: %pM\n", + sta->addr); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Station %pM moved to assoc state\n", + sta->addr); + } else if (old_state == IEEE80211_STA_ASSOC && + new_state == IEEE80211_STA_AUTH && + (vif->type == NL80211_IFTYPE_AP || + vif->type == NL80211_IFTYPE_ADHOC)) { + /* + * Disassociation. + */ + ret = ath10k_station_disassoc(ar, arvif, sta); + if (ret) + ath10k_warn("Failed to disassociate station: %pM\n", + sta->addr); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Station %pM moved to disassociated state\n", + sta->addr); + } + + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static int ath10k_conf_tx_uapsd(struct ath10k *ar, struct ieee80211_vif *vif, + u16 ac, bool enable) +{ + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + u32 value = 0; + int ret = 0; + + if (arvif->vdev_type != WMI_VDEV_TYPE_STA) + return 0; + + switch (ac) { + case IEEE80211_AC_VO: + value = WMI_STA_PS_UAPSD_AC3_DELIVERY_EN | + WMI_STA_PS_UAPSD_AC3_TRIGGER_EN; + break; + case IEEE80211_AC_VI: + value = WMI_STA_PS_UAPSD_AC2_DELIVERY_EN | + WMI_STA_PS_UAPSD_AC2_TRIGGER_EN; + break; + case IEEE80211_AC_BE: + value = WMI_STA_PS_UAPSD_AC1_DELIVERY_EN | + WMI_STA_PS_UAPSD_AC1_TRIGGER_EN; + break; + case IEEE80211_AC_BK: + value = WMI_STA_PS_UAPSD_AC0_DELIVERY_EN | + WMI_STA_PS_UAPSD_AC0_TRIGGER_EN; + break; + } + + if (enable) + arvif->u.sta.uapsd |= value; + else + arvif->u.sta.uapsd &= ~value; + + ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, + WMI_STA_PS_PARAM_UAPSD, + arvif->u.sta.uapsd); + if (ret) { + ath10k_warn("could not set uapsd params %d\n", ret); + goto exit; + } + + if (arvif->u.sta.uapsd) + value = WMI_STA_PS_RX_WAKE_POLICY_POLL_UAPSD; + else + value = WMI_STA_PS_RX_WAKE_POLICY_WAKE; + + ret = ath10k_wmi_set_sta_ps_param(ar, arvif->vdev_id, + WMI_STA_PS_PARAM_RX_WAKE_POLICY, + value); + if (ret) + ath10k_warn("could not set rx wake param %d\n", ret); + +exit: + return ret; +} + +static int ath10k_conf_tx(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, u16 ac, + const struct ieee80211_tx_queue_params *params) +{ + struct ath10k *ar = hw->priv; + struct wmi_wmm_params_arg *p = NULL; + int ret; + + mutex_lock(&ar->conf_mutex); + + switch (ac) { + case IEEE80211_AC_VO: + p = &ar->wmm_params.ac_vo; + break; + case IEEE80211_AC_VI: + p = &ar->wmm_params.ac_vi; + break; + case IEEE80211_AC_BE: + p = &ar->wmm_params.ac_be; + break; + case IEEE80211_AC_BK: + p = &ar->wmm_params.ac_bk; + break; + } + + if (WARN_ON(!p)) { + ret = -EINVAL; + goto exit; + } + + p->cwmin = params->cw_min; + p->cwmax = params->cw_max; + p->aifs = params->aifs; + + /* + * The channel time duration programmed in the HW is in absolute + * microseconds, while mac80211 gives the txop in units of + * 32 microseconds. + */ + p->txop = params->txop * 32; + + /* FIXME: FW accepts wmm params per hw, not per vif */ + ret = ath10k_wmi_pdev_set_wmm_params(ar, &ar->wmm_params); + if (ret) { + ath10k_warn("could not set wmm params %d\n", ret); + goto exit; + } + + ret = ath10k_conf_tx_uapsd(ar, vif, ac, params->uapsd); + if (ret) + ath10k_warn("could not set sta uapsd %d\n", ret); + +exit: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +#define ATH10K_ROC_TIMEOUT_HZ (2*HZ) + +static int ath10k_remain_on_channel(struct ieee80211_hw *hw, + struct ieee80211_vif *vif, + struct ieee80211_channel *chan, + int duration, + enum ieee80211_roc_type type) +{ + struct ath10k *ar = hw->priv; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + struct wmi_start_scan_arg arg; + int ret; + + mutex_lock(&ar->conf_mutex); + + spin_lock_bh(&ar->data_lock); + if (ar->scan.in_progress) { + spin_unlock_bh(&ar->data_lock); + ret = -EBUSY; + goto exit; + } + + INIT_COMPLETION(ar->scan.started); + INIT_COMPLETION(ar->scan.completed); + INIT_COMPLETION(ar->scan.on_channel); + ar->scan.in_progress = true; + ar->scan.aborting = false; + ar->scan.is_roc = true; + ar->scan.vdev_id = arvif->vdev_id; + ar->scan.roc_freq = chan->center_freq; + spin_unlock_bh(&ar->data_lock); + + memset(&arg, 0, sizeof(arg)); + ath10k_wmi_start_scan_init(ar, &arg); + arg.vdev_id = arvif->vdev_id; + arg.scan_id = ATH10K_SCAN_ID; + arg.n_channels = 1; + arg.channels[0] = chan->center_freq; + arg.dwell_time_active = duration; + arg.dwell_time_passive = duration; + arg.max_scan_time = 2 * duration; + arg.scan_ctrl_flags |= WMI_SCAN_FLAG_PASSIVE; + arg.scan_ctrl_flags |= WMI_SCAN_FILTER_PROBE_REQ; + + ret = ath10k_start_scan(ar, &arg); + if (ret) { + ath10k_warn("could not start roc scan (%d)\n", ret); + spin_lock_bh(&ar->data_lock); + ar->scan.in_progress = false; + spin_unlock_bh(&ar->data_lock); + goto exit; + } + + ret = wait_for_completion_timeout(&ar->scan.on_channel, 3*HZ); + if (ret == 0) { + ath10k_warn("could not switch to channel for roc scan\n"); + ath10k_abort_scan(ar); + ret = -ETIMEDOUT; + goto exit; + } + + ret = 0; +exit: + mutex_unlock(&ar->conf_mutex); + return ret; +} + +static int ath10k_cancel_remain_on_channel(struct ieee80211_hw *hw) +{ + struct ath10k *ar = hw->priv; + + mutex_lock(&ar->conf_mutex); + ath10k_abort_scan(ar); + mutex_unlock(&ar->conf_mutex); + + return 0; +} + +/* + * Both RTS and Fragmentation threshold are interface-specific + * in ath10k, but device-specific in mac80211. + */ +static void ath10k_set_rts_iter(void *data, u8 *mac, struct ieee80211_vif *vif) +{ + struct ath10k_generic_iter *ar_iter = data; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + u32 rts = ar_iter->ar->hw->wiphy->rts_threshold; + + rts = min_t(u32, rts, ATH10K_RTS_MAX); + + ar_iter->ret = ath10k_wmi_vdev_set_param(ar_iter->ar, arvif->vdev_id, + WMI_VDEV_PARAM_RTS_THRESHOLD, + rts); + if (ar_iter->ret) + ath10k_warn("Failed to set RTS threshold for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set RTS threshold: %d for VDEV: %d\n", + rts, arvif->vdev_id); +} + +static int ath10k_set_rts_threshold(struct ieee80211_hw *hw, u32 value) +{ + struct ath10k_generic_iter ar_iter; + struct ath10k *ar = hw->priv; + + memset(&ar_iter, 0, sizeof(struct ath10k_generic_iter)); + ar_iter.ar = ar; + + mutex_lock(&ar->conf_mutex); + ieee80211_iterate_active_interfaces(hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath10k_set_rts_iter, &ar_iter); + mutex_unlock(&ar->conf_mutex); + + return ar_iter.ret; +} + +static void ath10k_set_frag_iter(void *data, u8 *mac, struct ieee80211_vif *vif) +{ + struct ath10k_generic_iter *ar_iter = data; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + u32 frag = ar_iter->ar->hw->wiphy->frag_threshold; + int ret; + + frag = clamp_t(u32, frag, + ATH10K_FRAGMT_THRESHOLD_MIN, + ATH10K_FRAGMT_THRESHOLD_MAX); + + ret = ath10k_wmi_vdev_set_param(ar_iter->ar, arvif->vdev_id, + WMI_VDEV_PARAM_FRAGMENTATION_THRESHOLD, + frag); + + ar_iter->ret = ret; + if (ar_iter->ret) + ath10k_warn("Failed to set frag threshold for VDEV: %d\n", + arvif->vdev_id); + else + ath10k_dbg(ATH10K_DBG_MAC, + "Set frag threshold: %d for VDEV: %d\n", + frag, arvif->vdev_id); +} + +static int ath10k_set_frag_threshold(struct ieee80211_hw *hw, u32 value) +{ + struct ath10k_generic_iter ar_iter; + struct ath10k *ar = hw->priv; + + memset(&ar_iter, 0, sizeof(struct ath10k_generic_iter)); + ar_iter.ar = ar; + + mutex_lock(&ar->conf_mutex); + ieee80211_iterate_active_interfaces(hw, IEEE80211_IFACE_ITER_RESUME_ALL, + ath10k_set_frag_iter, &ar_iter); + mutex_unlock(&ar->conf_mutex); + + return ar_iter.ret; +} + +static void ath10k_flush(struct ieee80211_hw *hw, u32 queues, bool drop) +{ + struct ath10k *ar = hw->priv; + int ret; + + /* mac80211 doesn't care if we really xmit queued frames or not + * we'll collect those frames either way if we stop/delete vdevs */ + if (drop) + return; + + ret = wait_event_timeout(ar->htt->empty_tx_wq, ({ + bool empty; + spin_lock_bh(&ar->htt->tx_lock); + empty = bitmap_empty(ar->htt->used_msdu_ids, + ar->htt->max_num_pending_tx); + spin_unlock_bh(&ar->htt->tx_lock); + (empty); + }), ATH10K_FLUSH_TIMEOUT_HZ); + if (ret <= 0) + ath10k_warn("tx not flushed\n"); +} + +/* TODO: Implement this function properly + * For now it is needed to reply to Probe Requests in IBSS mode. + * Propably we need this information from FW. + */ +static int ath10k_tx_last_beacon(struct ieee80211_hw *hw) +{ + return 1; +} + +static const struct ieee80211_ops ath10k_ops = { + .tx = ath10k_tx, + .start = ath10k_start, + .stop = ath10k_stop, + .config = ath10k_config, + .add_interface = ath10k_add_interface, + .remove_interface = ath10k_remove_interface, + .configure_filter = ath10k_configure_filter, + .bss_info_changed = ath10k_bss_info_changed, + .hw_scan = ath10k_hw_scan, + .cancel_hw_scan = ath10k_cancel_hw_scan, + .set_key = ath10k_set_key, + .sta_state = ath10k_sta_state, + .conf_tx = ath10k_conf_tx, + .remain_on_channel = ath10k_remain_on_channel, + .cancel_remain_on_channel = ath10k_cancel_remain_on_channel, + .set_rts_threshold = ath10k_set_rts_threshold, + .set_frag_threshold = ath10k_set_frag_threshold, + .flush = ath10k_flush, + .tx_last_beacon = ath10k_tx_last_beacon, +}; + +#define RATETAB_ENT(_rate, _rateid, _flags) { \ + .bitrate = (_rate), \ + .flags = (_flags), \ + .hw_value = (_rateid), \ +} + +#define CHAN2G(_channel, _freq, _flags) { \ + .band = IEEE80211_BAND_2GHZ, \ + .hw_value = (_channel), \ + .center_freq = (_freq), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +#define CHAN5G(_channel, _freq, _flags) { \ + .band = IEEE80211_BAND_5GHZ, \ + .hw_value = (_channel), \ + .center_freq = (_freq), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +static const struct ieee80211_channel ath10k_2ghz_channels[] = { + CHAN2G(1, 2412, 0), + CHAN2G(2, 2417, 0), + CHAN2G(3, 2422, 0), + CHAN2G(4, 2427, 0), + CHAN2G(5, 2432, 0), + CHAN2G(6, 2437, 0), + CHAN2G(7, 2442, 0), + CHAN2G(8, 2447, 0), + CHAN2G(9, 2452, 0), + CHAN2G(10, 2457, 0), + CHAN2G(11, 2462, 0), + CHAN2G(12, 2467, 0), + CHAN2G(13, 2472, 0), + CHAN2G(14, 2484, 0), +}; + +static const struct ieee80211_channel ath10k_5ghz_channels[] = { + CHAN5G(36, 5180, 0), + CHAN5G(40, 5200, 0), + CHAN5G(44, 5220, 0), + CHAN5G(48, 5240, 0), + CHAN5G(52, 5260, 0), + CHAN5G(56, 5280, 0), + CHAN5G(60, 5300, 0), + CHAN5G(64, 5320, 0), + CHAN5G(100, 5500, 0), + CHAN5G(104, 5520, 0), + CHAN5G(108, 5540, 0), + CHAN5G(112, 5560, 0), + CHAN5G(116, 5580, 0), + CHAN5G(120, 5600, 0), + CHAN5G(124, 5620, 0), + CHAN5G(128, 5640, 0), + CHAN5G(132, 5660, 0), + CHAN5G(136, 5680, 0), + CHAN5G(140, 5700, 0), + CHAN5G(149, 5745, 0), + CHAN5G(153, 5765, 0), + CHAN5G(157, 5785, 0), + CHAN5G(161, 5805, 0), + CHAN5G(165, 5825, 0), +}; + +static struct ieee80211_rate ath10k_rates[] = { + /* CCK */ + RATETAB_ENT(10, 0x82, 0), + RATETAB_ENT(20, 0x84, 0), + RATETAB_ENT(55, 0x8b, 0), + RATETAB_ENT(110, 0x96, 0), + /* OFDM */ + RATETAB_ENT(60, 0x0c, 0), + RATETAB_ENT(90, 0x12, 0), + RATETAB_ENT(120, 0x18, 0), + RATETAB_ENT(180, 0x24, 0), + RATETAB_ENT(240, 0x30, 0), + RATETAB_ENT(360, 0x48, 0), + RATETAB_ENT(480, 0x60, 0), + RATETAB_ENT(540, 0x6c, 0), +}; + +#define ath10k_a_rates (ath10k_rates + 4) +#define ath10k_a_rates_size (ARRAY_SIZE(ath10k_rates) - 4) +#define ath10k_g_rates (ath10k_rates + 0) +#define ath10k_g_rates_size (ARRAY_SIZE(ath10k_rates)) + +struct ath10k *ath10k_mac_create(void) +{ + struct ieee80211_hw *hw; + struct ath10k *ar; + + hw = ieee80211_alloc_hw(sizeof(struct ath10k), &ath10k_ops); + if (!hw) + return NULL; + + ar = hw->priv; + ar->hw = hw; + + return ar; +} + +void ath10k_mac_destroy(struct ath10k *ar) +{ + ieee80211_free_hw(ar->hw); +} + +static const struct ieee80211_iface_limit ath10k_if_limits[] = { + { + .max = 8, + .types = BIT(NL80211_IFTYPE_STATION) + | BIT(NL80211_IFTYPE_P2P_CLIENT) + | BIT(NL80211_IFTYPE_P2P_GO) + | BIT(NL80211_IFTYPE_AP) + } +}; + +static const struct ieee80211_iface_combination ath10k_if_comb = { + .limits = ath10k_if_limits, + .n_limits = ARRAY_SIZE(ath10k_if_limits), + .max_interfaces = 8, + .num_different_channels = 1, + .beacon_int_infra_match = true, +}; + +static struct ieee80211_sta_vht_cap ath10k_create_vht_cap(struct ath10k *ar) +{ + struct ieee80211_sta_vht_cap vht_cap = {0}; + u16 mcs_map; + + vht_cap.vht_supported = 1; + vht_cap.cap = ar->vht_cap_info; + + /* FIXME: check dynamically how many streams board supports */ + mcs_map = IEEE80211_VHT_MCS_SUPPORT_0_9 << 0 | + IEEE80211_VHT_MCS_SUPPORT_0_9 << 2 | + IEEE80211_VHT_MCS_SUPPORT_0_9 << 4 | + IEEE80211_VHT_MCS_NOT_SUPPORTED << 6 | + IEEE80211_VHT_MCS_NOT_SUPPORTED << 8 | + IEEE80211_VHT_MCS_NOT_SUPPORTED << 10 | + IEEE80211_VHT_MCS_NOT_SUPPORTED << 12 | + IEEE80211_VHT_MCS_NOT_SUPPORTED << 14; + + vht_cap.vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map); + vht_cap.vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map); + + return vht_cap; +} + +static struct ieee80211_sta_ht_cap ath10k_get_ht_cap(struct ath10k *ar) +{ + int i; + struct ieee80211_sta_ht_cap ht_cap = {0}; + + if (!(ar->ht_cap_info & WMI_HT_CAP_ENABLED)) + return ht_cap; + + ht_cap.ht_supported = 1; + ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K; + ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_8; + ht_cap.cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40; + ht_cap.cap |= IEEE80211_HT_CAP_DSSSCCK40; + ht_cap.cap |= WLAN_HT_CAP_SM_PS_STATIC << IEEE80211_HT_CAP_SM_PS_SHIFT; + + if (ar->ht_cap_info & WMI_HT_CAP_HT20_SGI) + ht_cap.cap |= IEEE80211_HT_CAP_SGI_20; + + if (ar->ht_cap_info & WMI_HT_CAP_HT40_SGI) + ht_cap.cap |= IEEE80211_HT_CAP_SGI_40; + + if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS) { + u32 smps; + + smps = WLAN_HT_CAP_SM_PS_DYNAMIC; + smps <<= IEEE80211_HT_CAP_SM_PS_SHIFT; + + ht_cap.cap |= smps; + } + + if (ar->ht_cap_info & WMI_HT_CAP_TX_STBC) + ht_cap.cap |= IEEE80211_HT_CAP_TX_STBC; + + if (ar->ht_cap_info & WMI_HT_CAP_RX_STBC) { + u32 stbc; + + stbc = ar->ht_cap_info; + stbc &= WMI_HT_CAP_RX_STBC; + stbc >>= WMI_HT_CAP_RX_STBC_MASK_SHIFT; + stbc <<= IEEE80211_HT_CAP_RX_STBC_SHIFT; + stbc &= IEEE80211_HT_CAP_RX_STBC; + + ht_cap.cap |= stbc; + } + + if (ar->ht_cap_info & WMI_HT_CAP_LDPC) + ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING; + + if (ar->ht_cap_info & WMI_HT_CAP_L_SIG_TXOP_PROT) + ht_cap.cap |= IEEE80211_HT_CAP_LSIG_TXOP_PROT; + + /* max AMSDU is implicitly taken from vht_cap_info */ + if (ar->vht_cap_info & WMI_VHT_CAP_MAX_MPDU_LEN_MASK) + ht_cap.cap |= IEEE80211_HT_CAP_MAX_AMSDU; + + for (i = 0; i < WMI_MAX_SPATIAL_STREAM; i++) + ht_cap.mcs.rx_mask[i] = 0xFF; + + ht_cap.mcs.tx_params |= IEEE80211_HT_MCS_TX_DEFINED; + + return ht_cap; +} + + +static void ath10k_get_arvif_iter(void *data, u8 *mac, + struct ieee80211_vif *vif) +{ + struct ath10k_vif_iter *arvif_iter = data; + struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif); + + if (arvif->vdev_id == arvif_iter->vdev_id) + arvif_iter->arvif = arvif; +} + +struct ath10k_vif *ath10k_get_arvif(struct ath10k *ar, u32 vdev_id) +{ + struct ath10k_vif_iter arvif_iter; + u32 flags; + + memset(&arvif_iter, 0, sizeof(struct ath10k_vif_iter)); + arvif_iter.vdev_id = vdev_id; + + flags = IEEE80211_IFACE_ITER_RESUME_ALL; + ieee80211_iterate_active_interfaces_atomic(ar->hw, + flags, + ath10k_get_arvif_iter, + &arvif_iter); + if (!arvif_iter.arvif) { + ath10k_warn("No VIF found for VDEV: %d\n", vdev_id); + return NULL; + } + + return arvif_iter.arvif; +} + +int ath10k_mac_register(struct ath10k *ar) +{ + struct ieee80211_supported_band *band; + struct ieee80211_sta_vht_cap vht_cap; + struct ieee80211_sta_ht_cap ht_cap; + void *channels; + int ret; + + SET_IEEE80211_PERM_ADDR(ar->hw, ar->mac_addr); + + SET_IEEE80211_DEV(ar->hw, ar->dev); + + ht_cap = ath10k_get_ht_cap(ar); + vht_cap = ath10k_create_vht_cap(ar); + + if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) { + channels = kmemdup(ath10k_2ghz_channels, + sizeof(ath10k_2ghz_channels), + GFP_KERNEL); + if (!channels) + return -ENOMEM; + + band = &ar->mac.sbands[IEEE80211_BAND_2GHZ]; + band->n_channels = ARRAY_SIZE(ath10k_2ghz_channels); + band->channels = channels; + band->n_bitrates = ath10k_g_rates_size; + band->bitrates = ath10k_g_rates; + band->ht_cap = ht_cap; + + /* vht is not supported in 2.4 GHz */ + + ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = band; + } + + if (ar->phy_capability & WHAL_WLAN_11A_CAPABILITY) { + channels = kmemdup(ath10k_5ghz_channels, + sizeof(ath10k_5ghz_channels), + GFP_KERNEL); + if (!channels) { + if (ar->phy_capability & WHAL_WLAN_11G_CAPABILITY) { + band = &ar->mac.sbands[IEEE80211_BAND_2GHZ]; + kfree(band->channels); + } + return -ENOMEM; + } + + band = &ar->mac.sbands[IEEE80211_BAND_5GHZ]; + band->n_channels = ARRAY_SIZE(ath10k_5ghz_channels); + band->channels = channels; + band->n_bitrates = ath10k_a_rates_size; + band->bitrates = ath10k_a_rates; + band->ht_cap = ht_cap; + band->vht_cap = vht_cap; + ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = band; + } + + ar->hw->wiphy->interface_modes = + BIT(NL80211_IFTYPE_STATION) | + BIT(NL80211_IFTYPE_ADHOC) | + BIT(NL80211_IFTYPE_AP) | + BIT(NL80211_IFTYPE_P2P_CLIENT) | + BIT(NL80211_IFTYPE_P2P_GO); + + ar->hw->flags = IEEE80211_HW_SIGNAL_DBM | + IEEE80211_HW_SUPPORTS_PS | + IEEE80211_HW_SUPPORTS_DYNAMIC_PS | + IEEE80211_HW_SUPPORTS_UAPSD | + IEEE80211_HW_MFP_CAPABLE | + IEEE80211_HW_REPORTS_TX_ACK_STATUS | + IEEE80211_HW_HAS_RATE_CONTROL | + IEEE80211_HW_SUPPORTS_STATIC_SMPS | + IEEE80211_HW_WANT_MONITOR_VIF | + IEEE80211_HW_AP_LINK_PS; + + if (ar->ht_cap_info & WMI_HT_CAP_DYNAMIC_SMPS) + ar->hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS; + + if (ar->ht_cap_info & WMI_HT_CAP_ENABLED) { + ar->hw->flags |= IEEE80211_HW_AMPDU_AGGREGATION; + ar->hw->flags |= IEEE80211_HW_TX_AMPDU_SETUP_IN_HW; + } + + ar->hw->wiphy->max_scan_ssids = WLAN_SCAN_PARAMS_MAX_SSID; + ar->hw->wiphy->max_scan_ie_len = WLAN_SCAN_PARAMS_MAX_IE_LEN; + + ar->hw->vif_data_size = sizeof(struct ath10k_vif); + + ar->hw->channel_change_time = 5000; + ar->hw->max_listen_interval = ATH10K_MAX_HW_LISTEN_INTERVAL; + + ar->hw->wiphy->flags |= WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL; + ar->hw->wiphy->max_remain_on_channel_duration = 5000; + + ar->hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD; + /* + * on LL hardware queues are managed entirely by the FW + * so we only advertise to mac we can do the queues thing + */ + ar->hw->queues = 4; + + ar->hw->wiphy->iface_combinations = &ath10k_if_comb; + ar->hw->wiphy->n_iface_combinations = 1; + + ret = ath_regd_init(&ar->ath_common.regulatory, ar->hw->wiphy, + ath10k_reg_notifier); + if (ret) { + ath10k_err("Regulatory initialization failed\n"); + return ret; + } + + ret = ieee80211_register_hw(ar->hw); + if (ret) { + ath10k_err("ieee80211 registration failed: %d\n", ret); + return ret; + } + + if (!ath_is_world_regd(&ar->ath_common.regulatory)) { + ret = regulatory_hint(ar->hw->wiphy, + ar->ath_common.regulatory.alpha2); + if (ret) + goto exit; + } + + return 0; +exit: + ieee80211_unregister_hw(ar->hw); + return ret; +} + +void ath10k_mac_unregister(struct ath10k *ar) +{ + ieee80211_unregister_hw(ar->hw); + + kfree(ar->mac.sbands[IEEE80211_BAND_2GHZ].channels); + kfree(ar->mac.sbands[IEEE80211_BAND_5GHZ].channels); + + SET_IEEE80211_DEV(ar->hw, NULL); +} |
