diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath11k/mac.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath11k/mac.c | 5427 |
1 files changed, 5427 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c new file mode 100644 index 000000000000..cb025a4a5785 --- /dev/null +++ b/drivers/net/wireless/ath/ath11k/mac.c @@ -0,0 +1,5427 @@ +// SPDX-License-Identifier: BSD-3-Clause-Clear +/* + * Copyright (c) 2018-2019 The Linux Foundation. All rights reserved. + */ + +#include <net/mac80211.h> +#include <linux/etherdevice.h> +#include "mac.h" +#include "core.h" +#include "debug.h" +#include "wmi.h" +#include "hw.h" +#include "dp_tx.h" +#include "dp_rx.h" +#include "testmode.h" +#include "peer.h" + +#define CHAN2G(_channel, _freq, _flags) { \ + .band = NL80211_BAND_2GHZ, \ + .hw_value = (_channel), \ + .center_freq = (_freq), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +#define CHAN5G(_channel, _freq, _flags) { \ + .band = NL80211_BAND_5GHZ, \ + .hw_value = (_channel), \ + .center_freq = (_freq), \ + .flags = (_flags), \ + .max_antenna_gain = 0, \ + .max_power = 30, \ +} + +static const struct ieee80211_channel ath11k_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 ath11k_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(144, 5720, 0), + CHAN5G(149, 5745, 0), + CHAN5G(153, 5765, 0), + CHAN5G(157, 5785, 0), + CHAN5G(161, 5805, 0), + CHAN5G(165, 5825, 0), + CHAN5G(169, 5845, 0), + CHAN5G(173, 5865, 0), +}; + +static struct ieee80211_rate ath11k_legacy_rates[] = { + { .bitrate = 10, + .hw_value = ATH11K_HW_RATE_CCK_LP_1M }, + { .bitrate = 20, + .hw_value = ATH11K_HW_RATE_CCK_LP_2M, + .hw_value_short = ATH11K_HW_RATE_CCK_SP_2M, + .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 55, + .hw_value = ATH11K_HW_RATE_CCK_LP_5_5M, + .hw_value_short = ATH11K_HW_RATE_CCK_SP_5_5M, + .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + { .bitrate = 110, + .hw_value = ATH11K_HW_RATE_CCK_LP_11M, + .hw_value_short = ATH11K_HW_RATE_CCK_SP_11M, + .flags = IEEE80211_RATE_SHORT_PREAMBLE }, + + { .bitrate = 60, .hw_value = ATH11K_HW_RATE_OFDM_6M }, + { .bitrate = 90, .hw_value = ATH11K_HW_RATE_OFDM_9M }, + { .bitrate = 120, .hw_value = ATH11K_HW_RATE_OFDM_12M }, + { .bitrate = 180, .hw_value = ATH11K_HW_RATE_OFDM_18M }, + { .bitrate = 240, .hw_value = ATH11K_HW_RATE_OFDM_24M }, + { .bitrate = 360, .hw_value = ATH11K_HW_RATE_OFDM_36M }, + { .bitrate = 480, .hw_value = ATH11K_HW_RATE_OFDM_48M }, + { .bitrate = 540, .hw_value = ATH11K_HW_RATE_OFDM_54M }, +}; + +static const int +ath11k_phymodes[NUM_NL80211_BANDS][ATH11K_CHAN_WIDTH_NUM] = { + [NL80211_BAND_2GHZ] = { + [NL80211_CHAN_WIDTH_5] = MODE_UNKNOWN, + [NL80211_CHAN_WIDTH_10] = MODE_UNKNOWN, + [NL80211_CHAN_WIDTH_20_NOHT] = MODE_11AX_HE20_2G, + [NL80211_CHAN_WIDTH_20] = MODE_11AX_HE20_2G, + [NL80211_CHAN_WIDTH_40] = MODE_11AX_HE40_2G, + [NL80211_CHAN_WIDTH_80] = MODE_11AX_HE80_2G, + [NL80211_CHAN_WIDTH_80P80] = MODE_UNKNOWN, + [NL80211_CHAN_WIDTH_160] = MODE_UNKNOWN, + }, + [NL80211_BAND_5GHZ] = { + [NL80211_CHAN_WIDTH_5] = MODE_UNKNOWN, + [NL80211_CHAN_WIDTH_10] = MODE_UNKNOWN, + [NL80211_CHAN_WIDTH_20_NOHT] = MODE_11AX_HE20, + [NL80211_CHAN_WIDTH_20] = MODE_11AX_HE20, + [NL80211_CHAN_WIDTH_40] = MODE_11AX_HE40, + [NL80211_CHAN_WIDTH_80] = MODE_11AX_HE80, + [NL80211_CHAN_WIDTH_160] = MODE_11AX_HE160, + [NL80211_CHAN_WIDTH_80P80] = MODE_11AX_HE80_80, + }, +}; + +const struct htt_rx_ring_tlv_filter ath11k_mac_mon_status_filter_default = { + .rx_filter = HTT_RX_FILTER_TLV_FLAGS_MPDU_START | + HTT_RX_FILTER_TLV_FLAGS_PPDU_END | + HTT_RX_FILTER_TLV_FLAGS_PPDU_END_STATUS_DONE, + .pkt_filter_flags0 = HTT_RX_FP_MGMT_FILTER_FLAGS0, + .pkt_filter_flags1 = HTT_RX_FP_MGMT_FILTER_FLAGS1, + .pkt_filter_flags2 = HTT_RX_FP_CTRL_FILTER_FLASG2, + .pkt_filter_flags3 = HTT_RX_FP_DATA_FILTER_FLASG3 | + HTT_RX_FP_CTRL_FILTER_FLASG3 +}; + +#define ATH11K_MAC_FIRST_OFDM_RATE_IDX 4 +#define ath11k_g_rates ath11k_legacy_rates +#define ath11k_g_rates_size (ARRAY_SIZE(ath11k_legacy_rates)) +#define ath11k_a_rates (ath11k_legacy_rates + 4) +#define ath11k_a_rates_size (ARRAY_SIZE(ath11k_legacy_rates) - 4) + +#define ATH11K_MAC_SCAN_TIMEOUT_MSECS 200 /* in msecs */ + +static const u32 ath11k_smps_map[] = { + [WLAN_HT_CAP_SM_PS_STATIC] = WMI_PEER_SMPS_STATIC, + [WLAN_HT_CAP_SM_PS_DYNAMIC] = WMI_PEER_SMPS_DYNAMIC, + [WLAN_HT_CAP_SM_PS_INVALID] = WMI_PEER_SMPS_PS_NONE, + [WLAN_HT_CAP_SM_PS_DISABLED] = WMI_PEER_SMPS_PS_NONE, +}; + +int ath11k_mac_hw_ratecode_to_legacy_rate(u8 hw_rc, u8 preamble, u8 *rateidx, + u16 *rate) +{ + /* As default, it is OFDM rates */ + int i = ATH11K_MAC_FIRST_OFDM_RATE_IDX; + int max_rates_idx = ath11k_g_rates_size; + + if (preamble == WMI_RATE_PREAMBLE_CCK) { + hw_rc &= ~ATH11k_HW_RATECODE_CCK_SHORT_PREAM_MASK; + i = 0; + max_rates_idx = ATH11K_MAC_FIRST_OFDM_RATE_IDX; + } + + while (i < max_rates_idx) { + if (hw_rc == ath11k_legacy_rates[i].hw_value) { + *rateidx = i; + *rate = ath11k_legacy_rates[i].bitrate; + return 0; + } + i++; + } + + return -EINVAL; +} + +static int get_num_chains(u32 mask) +{ + int num_chains = 0; + + while (mask) { + if (mask & BIT(0)) + num_chains++; + mask >>= 1; + } + + return num_chains; +} + +u8 ath11k_mac_bitrate_to_idx(const struct ieee80211_supported_band *sband, + u32 bitrate) +{ + int i; + + for (i = 0; i < sband->n_bitrates; i++) + if (sband->bitrates[i].bitrate == bitrate) + return i; + + return 0; +} + +static u32 +ath11k_mac_max_ht_nss(const u8 ht_mcs_mask[IEEE80211_HT_MCS_MASK_LEN]) +{ + int nss; + + for (nss = IEEE80211_HT_MCS_MASK_LEN - 1; nss >= 0; nss--) + if (ht_mcs_mask[nss]) + return nss + 1; + + return 1; +} + +static u32 +ath11k_mac_max_vht_nss(const u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) +{ + int nss; + + for (nss = NL80211_VHT_NSS_MAX - 1; nss >= 0; nss--) + if (vht_mcs_mask[nss]) + return nss + 1; + + return 1; +} + +static u8 ath11k_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 ath11k_mac_vif_chan(struct ieee80211_vif *vif, + struct cfg80211_chan_def *def) +{ + struct ieee80211_chanctx_conf *conf; + + rcu_read_lock(); + conf = rcu_dereference(vif->chanctx_conf); + if (!conf) { + rcu_read_unlock(); + return -ENOENT; + } + + *def = conf->def; + rcu_read_unlock(); + + return 0; +} + +static bool ath11k_mac_bitrate_is_cck(int bitrate) +{ + switch (bitrate) { + case 10: + case 20: + case 55: + case 110: + return true; + } + + return false; +} + +u8 ath11k_mac_hw_rate_to_idx(const struct ieee80211_supported_band *sband, + u8 hw_rate, bool cck) +{ + const struct ieee80211_rate *rate; + int i; + + for (i = 0; i < sband->n_bitrates; i++) { + rate = &sband->bitrates[i]; + + if (ath11k_mac_bitrate_is_cck(rate->bitrate) != cck) + continue; + + if (rate->hw_value == hw_rate) + return i; + else if (rate->flags & IEEE80211_RATE_SHORT_PREAMBLE && + rate->hw_value_short == hw_rate) + return i; + } + + return 0; +} + +static u8 ath11k_mac_bitrate_to_rate(int bitrate) +{ + return DIV_ROUND_UP(bitrate, 5) | + (ath11k_mac_bitrate_is_cck(bitrate) ? BIT(7) : 0); +} + +static void ath11k_get_arvif_iter(void *data, u8 *mac, + struct ieee80211_vif *vif) +{ + struct ath11k_vif_iter *arvif_iter = data; + struct ath11k_vif *arvif = (void *)vif->drv_priv; + + if (arvif->vdev_id == arvif_iter->vdev_id) + arvif_iter->arvif = arvif; +} + +struct ath11k_vif *ath11k_mac_get_arvif(struct ath11k *ar, u32 vdev_id) +{ + struct ath11k_vif_iter arvif_iter; + u32 flags; + + memset(&arvif_iter, 0, sizeof(struct ath11k_vif_iter)); + arvif_iter.vdev_id = vdev_id; + + flags = IEEE80211_IFACE_ITER_RESUME_ALL; + ieee80211_iterate_active_interfaces_atomic(ar->hw, + flags, + ath11k_get_arvif_iter, + &arvif_iter); + if (!arvif_iter.arvif) + return NULL; + + return arvif_iter.arvif; +} + +struct ath11k_vif *ath11k_mac_get_arvif_by_vdev_id(struct ath11k_base *ab, + u32 vdev_id) +{ + int i; + struct ath11k_pdev *pdev; + struct ath11k_vif *arvif; + + for (i = 0; i < ab->num_radios; i++) { + pdev = rcu_dereference(ab->pdevs_active[i]); + if (pdev && pdev->ar) { + arvif = ath11k_mac_get_arvif(pdev->ar, vdev_id); + if (arvif) + return arvif; + } + } + + return NULL; +} + +struct ath11k *ath11k_mac_get_ar_by_vdev_id(struct ath11k_base *ab, u32 vdev_id) +{ + int i; + struct ath11k_pdev *pdev; + struct ath11k_vif *arvif; + + for (i = 0; i < ab->num_radios; i++) { + pdev = rcu_dereference(ab->pdevs_active[i]); + if (pdev && pdev->ar) { + arvif = ath11k_mac_get_arvif(pdev->ar, vdev_id); + if (arvif) + return arvif->ar; + } + } + + return NULL; +} + +struct ath11k *ath11k_mac_get_ar_by_pdev_id(struct ath11k_base *ab, u32 pdev_id) +{ + int i; + struct ath11k_pdev *pdev; + + if (WARN_ON(pdev_id > ab->num_radios)) + return NULL; + + for (i = 0; i < ab->num_radios; i++) { + pdev = rcu_dereference(ab->pdevs_active[i]); + + if (pdev && pdev->pdev_id == pdev_id) + return (pdev->ar ? pdev->ar : NULL); + } + + return NULL; +} + +struct ath11k *ath11k_mac_get_ar_vdev_stop_status(struct ath11k_base *ab, + u32 vdev_id) +{ + int i; + struct ath11k_pdev *pdev; + struct ath11k *ar; + + for (i = 0; i < ab->num_radios; i++) { + pdev = rcu_dereference(ab->pdevs_active[i]); + if (pdev && pdev->ar) { + ar = pdev->ar; + + spin_lock_bh(&ar->data_lock); + if (ar->vdev_stop_status.stop_in_progress && + ar->vdev_stop_status.vdev_id == vdev_id) { + ar->vdev_stop_status.stop_in_progress = false; + spin_unlock_bh(&ar->data_lock); + return ar; + } + spin_unlock_bh(&ar->data_lock); + } + } + return NULL; +} + +static void ath11k_pdev_caps_update(struct ath11k *ar) +{ + struct ath11k_base *ab = ar->ab; + + ar->max_tx_power = ab->target_caps.hw_max_tx_power; + + /* FIXME Set min_tx_power to ab->target_caps.hw_min_tx_power. + * But since the received value in svcrdy is same as hw_max_tx_power, + * we can set ar->min_tx_power to 0 currently until + * this is fixed in firmware + */ + ar->min_tx_power = 0; + + ar->txpower_limit_2g = ar->max_tx_power; + ar->txpower_limit_5g = ar->max_tx_power; + ar->txpower_scale = WMI_HOST_TP_SCALE_MAX; +} + +static int ath11k_mac_txpower_recalc(struct ath11k *ar) +{ + struct ath11k_pdev *pdev = ar->pdev; + struct ath11k_vif *arvif; + int ret, txpower = -1; + u32 param; + + lockdep_assert_held(&ar->conf_mutex); + + list_for_each_entry(arvif, &ar->arvifs, list) { + if (arvif->txpower <= 0) + continue; + + if (txpower == -1) + txpower = arvif->txpower; + else + txpower = min(txpower, arvif->txpower); + } + + if (txpower == -1) + return 0; + + /* txpwr is set as 2 units per dBm in FW*/ + txpower = min_t(u32, max_t(u32, ar->min_tx_power, txpower), + ar->max_tx_power) * 2; + + ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "txpower to set in hw %d\n", + txpower / 2); + + if ((pdev->cap.supported_bands & WMI_HOST_WLAN_2G_CAP) && + ar->txpower_limit_2g != txpower) { + param = WMI_PDEV_PARAM_TXPOWER_LIMIT2G; + ret = ath11k_wmi_pdev_set_param(ar, param, + txpower, ar->pdev->pdev_id); + if (ret) + goto fail; + ar->txpower_limit_2g = txpower; + } + + if ((pdev->cap.supported_bands & WMI_HOST_WLAN_5G_CAP) && + ar->txpower_limit_5g != txpower) { + param = WMI_PDEV_PARAM_TXPOWER_LIMIT5G; + ret = ath11k_wmi_pdev_set_param(ar, param, + txpower, ar->pdev->pdev_id); + if (ret) + goto fail; + ar->txpower_limit_5g = txpower; + } + + return 0; + +fail: + ath11k_warn(ar->ab, "failed to recalc txpower limit %d using pdev param %d: %d\n", + txpower / 2, param, ret); + return ret; +} + +static int ath11k_recalc_rtscts_prot(struct ath11k_vif *arvif) +{ + struct ath11k *ar = arvif->ar; + u32 vdev_param, rts_cts = 0; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + vdev_param = WMI_VDEV_PARAM_ENABLE_RTSCTS; + + /* Enable RTS/CTS protection for sw retries (when legacy stations + * are in BSS) or by default only for second rate series. + * TODO: Check if we need to enable CTS 2 Self in any case + */ + rts_cts = WMI_USE_RTS_CTS; + + if (arvif->num_legacy_stations > 0) + rts_cts |= WMI_RTSCTS_ACROSS_SW_RETRIES << 4; + else + rts_cts |= WMI_RTSCTS_FOR_SECOND_RATESERIES << 4; + + /* Need not send duplicate param value to firmware */ + if (arvif->rtscts_prot_mode == rts_cts) + return 0; + + arvif->rtscts_prot_mode = rts_cts; + + ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac vdev %d recalc rts/cts prot %d\n", + arvif->vdev_id, rts_cts); + + ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id, + vdev_param, rts_cts); + if (ret) + ath11k_warn(ar->ab, "failed to recalculate rts/cts prot for vdev %d: %d\n", + arvif->vdev_id, ret); + + return ret; +} + +static int ath11k_mac_set_kickout(struct ath11k_vif *arvif) +{ + struct ath11k *ar = arvif->ar; + u32 param; + int ret; + + ret = ath11k_wmi_pdev_set_param(ar, WMI_PDEV_PARAM_STA_KICKOUT_TH, + ATH11K_KICKOUT_THRESHOLD, + ar->pdev->pdev_id); + if (ret) { + ath11k_warn(ar->ab, "failed to set kickout threshold on vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + + param = WMI_VDEV_PARAM_AP_KEEPALIVE_MIN_IDLE_INACTIVE_TIME_SECS; + ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id, param, + ATH11K_KEEPALIVE_MIN_IDLE); + if (ret) { + ath11k_warn(ar->ab, "failed to set keepalive minimum idle time on vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + + param = WMI_VDEV_PARAM_AP_KEEPALIVE_MAX_IDLE_INACTIVE_TIME_SECS; + ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id, param, + ATH11K_KEEPALIVE_MAX_IDLE); + if (ret) { + ath11k_warn(ar->ab, "failed to set keepalive maximum idle time on vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + + param = WMI_VDEV_PARAM_AP_KEEPALIVE_MAX_UNRESPONSIVE_TIME_SECS; + ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id, param, + ATH11K_KEEPALIVE_MAX_UNRESPONSIVE); + if (ret) { + ath11k_warn(ar->ab, "failed to set keepalive maximum unresponsive time on vdev %i: %d\n", + arvif->vdev_id, ret); + return ret; + } + + return 0; +} + +void ath11k_mac_peer_cleanup_all(struct ath11k *ar) +{ + struct ath11k_peer *peer, *tmp; + struct ath11k_base *ab = ar->ab; + + lockdep_assert_held(&ar->conf_mutex); + + spin_lock_bh(&ab->base_lock); + list_for_each_entry_safe(peer, tmp, &ab->peers, list) { + ath11k_peer_rx_tid_cleanup(ar, peer); + list_del(&peer->list); + kfree(peer); + } + spin_unlock_bh(&ab->base_lock); + + ar->num_peers = 0; + ar->num_stations = 0; +} + +static int ath11k_monitor_vdev_up(struct ath11k *ar, int vdev_id) +{ + int ret = 0; + + ret = ath11k_wmi_vdev_up(ar, vdev_id, 0, ar->mac_addr); + if (ret) { + ath11k_warn(ar->ab, "failed to put up monitor vdev %i: %d\n", + vdev_id, ret); + return ret; + } + + ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac monitor vdev %i started\n", + vdev_id); + return 0; +} + +static int ath11k_mac_op_config(struct ieee80211_hw *hw, u32 changed) +{ + struct ath11k *ar = hw->priv; + int ret = 0; + + /* mac80211 requires this op to be present and that's why + * there's an empty function, this can be extended when + * required. + */ + + mutex_lock(&ar->conf_mutex); + + /* TODO: Handle configuration changes as appropriate */ + + mutex_unlock(&ar->conf_mutex); + + return ret; +} + +static int ath11k_mac_setup_bcn_tmpl(struct ath11k_vif *arvif) +{ + struct ath11k *ar = arvif->ar; + struct ath11k_base *ab = ar->ab; + struct ieee80211_hw *hw = ar->hw; + struct ieee80211_vif *vif = arvif->vif; + struct ieee80211_mutable_offsets offs = {}; + struct sk_buff *bcn; + int ret; + + if (arvif->vdev_type != WMI_VDEV_TYPE_AP) + return 0; + + bcn = ieee80211_beacon_get_template(hw, vif, &offs); + if (!bcn) { + ath11k_warn(ab, "failed to get beacon template from mac80211\n"); + return -EPERM; + } + + ret = ath11k_wmi_bcn_tmpl(ar, arvif->vdev_id, &offs, bcn); + + kfree_skb(bcn); + + if (ret) + ath11k_warn(ab, "failed to submit beacon template command: %d\n", + ret); + + return ret; +} + +static void ath11k_control_beaconing(struct ath11k_vif *arvif, + struct ieee80211_bss_conf *info) +{ + struct ath11k *ar = arvif->ar; + int ret = 0; + + lockdep_assert_held(&arvif->ar->conf_mutex); + + if (!info->enable_beacon) { + ret = ath11k_wmi_vdev_down(ar, arvif->vdev_id); + if (ret) + ath11k_warn(ar->ab, "failed to down vdev_id %i: %d\n", + arvif->vdev_id, ret); + + arvif->is_up = false; + return; + } + + /* Install the beacon template to the FW */ + ret = ath11k_mac_setup_bcn_tmpl(arvif); + if (ret) { + ath11k_warn(ar->ab, "failed to update bcn tmpl during vdev up: %d\n", + ret); + return; + } + + arvif->tx_seq_no = 0x1000; + + arvif->aid = 0; + + ether_addr_copy(arvif->bssid, info->bssid); + + ret = ath11k_wmi_vdev_up(arvif->ar, arvif->vdev_id, arvif->aid, + arvif->bssid); + if (ret) { + ath11k_warn(ar->ab, "failed to bring up vdev %d: %i\n", + arvif->vdev_id, ret); + return; + } + + arvif->is_up = true; + + ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac vdev %d up\n", arvif->vdev_id); +} + +static void ath11k_peer_assoc_h_basic(struct ath11k *ar, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct peer_assoc_params *arg) +{ + struct ath11k_vif *arvif = (void *)vif->drv_priv; + u32 aid; + + lockdep_assert_held(&ar->conf_mutex); + + if (vif->type == NL80211_IFTYPE_STATION) + aid = vif->bss_conf.aid; + else + aid = sta->aid; + + ether_addr_copy(arg->peer_mac, sta->addr); + arg->vdev_id = arvif->vdev_id; + arg->peer_associd = aid; + arg->auth_flag = true; + /* TODO: STA WAR in ath10k for listen interval required? */ + arg->peer_listen_intval = ar->hw->conf.listen_interval; + arg->peer_nss = 1; + arg->peer_caps = vif->bss_conf.assoc_capability; +} + +static void ath11k_peer_assoc_h_crypto(struct ath11k *ar, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct peer_assoc_params *arg) +{ + struct ieee80211_bss_conf *info = &vif->bss_conf; + struct cfg80211_chan_def def; + struct cfg80211_bss *bss; + const u8 *rsnie = NULL; + const u8 *wpaie = NULL; + + lockdep_assert_held(&ar->conf_mutex); + + if (WARN_ON(ath11k_mac_vif_chan(vif, &def))) + return; + + bss = cfg80211_get_bss(ar->hw->wiphy, def.chan, info->bssid, NULL, 0, + IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY); + 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) { + ath11k_dbg(ar->ab, ATH11K_DBG_WMI, + "%s: rsn ie found\n", __func__); + arg->need_ptk_4_way = true; + } + + if (wpaie) { + ath11k_dbg(ar->ab, ATH11K_DBG_WMI, + "%s: wpa ie found\n", __func__); + arg->need_gtk_2_way = true; + } + + if (sta->mfp) { + /* TODO: Need to check if FW supports PMF? */ + arg->is_pmf_enabled = true; + } + + /* TODO: safe_mode_enabled (bypass 4-way handshake) flag req? */ +} + +static void ath11k_peer_assoc_h_rates(struct ath11k *ar, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct peer_assoc_params *arg) +{ + struct ath11k_vif *arvif = (void *)vif->drv_priv; + struct wmi_rate_set_arg *rateset = &arg->peer_legacy_rates; + struct cfg80211_chan_def def; + const struct ieee80211_supported_band *sband; + const struct ieee80211_rate *rates; + enum nl80211_band band; + u32 ratemask; + u8 rate; + int i; + + lockdep_assert_held(&ar->conf_mutex); + + if (WARN_ON(ath11k_mac_vif_chan(vif, &def))) + return; + + band = def.chan->band; + sband = ar->hw->wiphy->bands[band]; + ratemask = sta->supp_rates[band]; + ratemask &= arvif->bitrate_mask.control[band].legacy; + rates = sband->bitrates; + + rateset->num_rates = 0; + + for (i = 0; i < 32; i++, ratemask >>= 1, rates++) { + if (!(ratemask & 1)) + continue; + + rate = ath11k_mac_bitrate_to_rate(rates->bitrate); + rateset->rates[rateset->num_rates] = rate; + rateset->num_rates++; + } +} + +static bool +ath11k_peer_assoc_h_ht_masked(const u8 ht_mcs_mask[IEEE80211_HT_MCS_MASK_LEN]) +{ + int nss; + + for (nss = 0; nss < IEEE80211_HT_MCS_MASK_LEN; nss++) + if (ht_mcs_mask[nss]) + return false; + + return true; +} + +static bool +ath11k_peer_assoc_h_vht_masked(const u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) +{ + int nss; + + for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) + if (vht_mcs_mask[nss]) + return false; + + return true; +} + +static void ath11k_peer_assoc_h_ht(struct ath11k *ar, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct peer_assoc_params *arg) +{ + const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; + struct ath11k_vif *arvif = (void *)vif->drv_priv; + struct cfg80211_chan_def def; + enum nl80211_band band; + const u8 *ht_mcs_mask; + int i, n; + u8 max_nss; + u32 stbc; + + lockdep_assert_held(&ar->conf_mutex); + + if (WARN_ON(ath11k_mac_vif_chan(vif, &def))) + return; + + if (!ht_cap->ht_supported) + return; + + band = def.chan->band; + ht_mcs_mask = arvif->bitrate_mask.control[band].ht_mcs; + + if (ath11k_peer_assoc_h_ht_masked(ht_mcs_mask)) + return; + + arg->ht_flag = true; + + arg->peer_max_mpdu = (1 << (IEEE80211_HT_MAX_AMPDU_FACTOR + + ht_cap->ampdu_factor)) - 1; + + arg->peer_mpdu_density = + ath11k_parse_mpdudensity(ht_cap->ampdu_density); + + arg->peer_ht_caps = ht_cap->cap; + arg->peer_rate_caps |= WMI_HOST_RC_HT_FLAG; + + if (ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING) + arg->ldpc_flag = true; + + if (sta->bandwidth >= IEEE80211_STA_RX_BW_40) { + arg->bw_40 = true; + arg->peer_rate_caps |= WMI_HOST_RC_CW40_FLAG; + } + + if (arvif->bitrate_mask.control[band].gi != NL80211_TXRATE_FORCE_LGI) { + if (ht_cap->cap & (IEEE80211_HT_CAP_SGI_20 | + IEEE80211_HT_CAP_SGI_40)) + arg->peer_rate_caps |= WMI_HOST_RC_SGI_FLAG; + } + + if (ht_cap->cap & IEEE80211_HT_CAP_TX_STBC) { + arg->peer_rate_caps |= WMI_HOST_RC_TX_STBC_FLAG; + arg->stbc_flag = true; + } + + if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC) { + stbc = ht_cap->cap & IEEE80211_HT_CAP_RX_STBC; + stbc = stbc >> IEEE80211_HT_CAP_RX_STBC_SHIFT; + stbc = stbc << WMI_HOST_RC_RX_STBC_FLAG_S; + arg->peer_rate_caps |= stbc; + arg->stbc_flag = true; + } + + if (ht_cap->mcs.rx_mask[1] && ht_cap->mcs.rx_mask[2]) + arg->peer_rate_caps |= WMI_HOST_RC_TS_FLAG; + else if (ht_cap->mcs.rx_mask[1]) + arg->peer_rate_caps |= WMI_HOST_RC_DS_FLAG; + + for (i = 0, n = 0, max_nss = 0; i < IEEE80211_HT_MCS_MASK_LEN * 8; i++) + if ((ht_cap->mcs.rx_mask[i / 8] & BIT(i % 8)) && + (ht_mcs_mask[i / 8] & BIT(i % 8))) { + max_nss = (i / 8) + 1; + arg->peer_ht_rates.rates[n++] = i; + } + + /* This is a workaround for HT-enabled STAs which break the spec + * and have no HT capabilities RX mask (no HT RX MCS map). + * + * As per spec, in section 20.3.5 Modulation and coding scheme (MCS), + * MCS 0 through 7 are mandatory in 20MHz with 800 ns GI at all STAs. + * + * Firmware asserts if such situation occurs. + */ + if (n == 0) { + arg->peer_ht_rates.num_rates = 8; + for (i = 0; i < arg->peer_ht_rates.num_rates; i++) + arg->peer_ht_rates.rates[i] = i; + } else { + arg->peer_ht_rates.num_rates = n; + arg->peer_nss = min(sta->rx_nss, max_nss); + } + + ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac ht peer %pM mcs cnt %d nss %d\n", + arg->peer_mac, + arg->peer_ht_rates.num_rates, + arg->peer_nss); +} + +static int ath11k_mac_get_max_vht_mcs_map(u16 mcs_map, int nss) +{ + switch ((mcs_map >> (2 * nss)) & 0x3) { + case IEEE80211_VHT_MCS_SUPPORT_0_7: return BIT(8) - 1; + case IEEE80211_VHT_MCS_SUPPORT_0_8: return BIT(9) - 1; + case IEEE80211_VHT_MCS_SUPPORT_0_9: return BIT(10) - 1; + } + return 0; +} + +static u16 +ath11k_peer_assoc_h_vht_limit(u16 tx_mcs_set, + const u16 vht_mcs_limit[NL80211_VHT_NSS_MAX]) +{ + int idx_limit; + int nss; + u16 mcs_map; + u16 mcs; + + for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { + mcs_map = ath11k_mac_get_max_vht_mcs_map(tx_mcs_set, nss) & + vht_mcs_limit[nss]; + + if (mcs_map) + idx_limit = fls(mcs_map) - 1; + else + idx_limit = -1; + + switch (idx_limit) { + case 0: /* fall through */ + case 1: /* fall through */ + case 2: /* fall through */ + case 3: /* fall through */ + case 4: /* fall through */ + case 5: /* fall through */ + case 6: /* fall through */ + case 7: + mcs = IEEE80211_VHT_MCS_SUPPORT_0_7; + break; + case 8: + mcs = IEEE80211_VHT_MCS_SUPPORT_0_8; + break; + case 9: + mcs = IEEE80211_VHT_MCS_SUPPORT_0_9; + break; + default: + WARN_ON(1); + /* fall through */ + case -1: + mcs = IEEE80211_VHT_MCS_NOT_SUPPORTED; + break; + } + + tx_mcs_set &= ~(0x3 << (nss * 2)); + tx_mcs_set |= mcs << (nss * 2); + } + + return tx_mcs_set; +} + +static void ath11k_peer_assoc_h_vht(struct ath11k *ar, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct peer_assoc_params *arg) +{ + const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap; + struct ath11k_vif *arvif = (void *)vif->drv_priv; + struct cfg80211_chan_def def; + enum nl80211_band band; + const u16 *vht_mcs_mask; + u8 ampdu_factor; + u8 max_nss, vht_mcs; + int i; + + if (WARN_ON(ath11k_mac_vif_chan(vif, &def))) + return; + + if (!vht_cap->vht_supported) + return; + + band = def.chan->band; + vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs; + + if (ath11k_peer_assoc_h_vht_masked(vht_mcs_mask)) + return; + + arg->vht_flag = true; + + /* TODO: similar flags required? */ + arg->vht_capable = true; + + if (def.chan->band == NL80211_BAND_2GHZ) + arg->vht_ng_flag = true; + + arg->peer_vht_caps = vht_cap->cap; + + ampdu_factor = (vht_cap->cap & + IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK) >> + IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT; + + /* Workaround: Some Netgear/Linksys 11ac APs set Rx A-MPDU factor to + * zero in VHT IE. Using it would result in degraded throughput. + * arg->peer_max_mpdu at this point contains HT max_mpdu so keep + * it if VHT max_mpdu is smaller. + */ + arg->peer_max_mpdu = max(arg->peer_max_mpdu, + (1U << (IEEE80211_HT_MAX_AMPDU_FACTOR + + ampdu_factor)) - 1); + + if (sta->bandwidth == IEEE80211_STA_RX_BW_80) + arg->bw_80 = true; + + if (sta->bandwidth == IEEE80211_STA_RX_BW_160) + arg->bw_160 = true; + + /* Calculate peer NSS capability from VHT capabilities if STA + * supports VHT. + */ + for (i = 0, max_nss = 0, vht_mcs = 0; i < NL80211_VHT_NSS_MAX; i++) { + vht_mcs = __le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map) >> + (2 * i) & 3; + + if (vht_mcs != IEEE80211_VHT_MCS_NOT_SUPPORTED && + vht_mcs_mask[i]) + max_nss = i + 1; + } + arg->peer_nss = min(sta->rx_nss, max_nss); + arg->rx_max_rate = __le16_to_cpu(vht_cap->vht_mcs.rx_highest); + arg->rx_mcs_set = __le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map); + arg->tx_max_rate = __le16_to_cpu(vht_cap->vht_mcs.tx_highest); + arg->tx_mcs_set = ath11k_peer_assoc_h_vht_limit( + __le16_to_cpu(vht_cap->vht_mcs.tx_mcs_map), vht_mcs_mask); + + /* In IPQ8074 platform, VHT mcs rate 10 and 11 is enabled by default. + * VHT mcs rate 10 and 11 is not suppoerted in 11ac standard. + * so explicitly disable the VHT MCS rate 10 and 11 in 11ac mode. + */ + arg->tx_mcs_set &= ~IEEE80211_VHT_MCS_SUPPORT_0_11_MASK; + arg->tx_mcs_set |= IEEE80211_DISABLE_VHT_MCS_SUPPORT_0_11; + + /* TODO: Check */ + arg->tx_max_mcs_nss = 0xFF; + + ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac vht peer %pM max_mpdu %d flags 0x%x\n", + sta->addr, arg->peer_max_mpdu, arg->peer_flags); + + /* TODO: rxnss_override */ +} + +static void ath11k_peer_assoc_h_he(struct ath11k *ar, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct peer_assoc_params *arg) +{ + /* TODO: Implementation */ +} + +static void ath11k_peer_assoc_h_smps(struct ieee80211_sta *sta, + struct peer_assoc_params *arg) +{ + const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; + int smps; + + if (!ht_cap->ht_supported) + return; + + smps = ht_cap->cap & IEEE80211_HT_CAP_SM_PS; + smps >>= IEEE80211_HT_CAP_SM_PS_SHIFT; + + switch (smps) { + case WLAN_HT_CAP_SM_PS_STATIC: + arg->static_mimops_flag = true; + break; + case WLAN_HT_CAP_SM_PS_DYNAMIC: + arg->dynamic_mimops_flag = true; + break; + case WLAN_HT_CAP_SM_PS_DISABLED: + arg->spatial_mux_flag = true; + break; + default: + break; + } +} + +static void ath11k_peer_assoc_h_qos(struct ath11k *ar, + struct ieee80211_vif *vif, + struct ieee80211_sta *sta, + struct peer_assoc_params *arg) +{ + struct ath11k_vif *arvif = (void *)vif->drv_priv; + + switch (arvif->vdev_type) { + case WMI_VDEV_TYPE_AP: + if (sta->wme) { + /* TODO: Check WME vs QoS */ + arg->is_wme_set = true; + arg->qos_flag = true; + } + + if (sta->wme && sta->uapsd_queues) { + /* TODO: Check WME vs QoS */ + arg->is_wme_set = true; + arg->apsd_flag = true; + arg->peer_rate_caps |= WMI_HOST_RC_UAPSD_FLAG; + } + break; + case WMI_VDEV_TYPE_STA: + if (sta->wme) { + arg->is_wme_set = true; + arg->qos_flag = true; + } + break; + default: + break; + } + + ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac peer %pM qos %d\n", + sta->addr, arg->qos_flag); +} + +static int ath11k_peer_assoc_qos_ap(struct ath11k *ar, + struct ath11k_vif *arvif, + struct ieee80211_sta *sta) +{ + struct ap_ps_params params; + u32 max_sp; + u32 uapsd; + int ret; + + lockdep_assert_held(&ar->conf_mutex); + + params.vdev_id = arvif->vdev_id; + + ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac uapsd_queues 0x%x max_sp %d\n", + sta->uapsd_queues, sta->max_sp); + + uapsd = 0; + 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; + + max_sp = 0; + if (sta->max_sp < MAX_WMI_AP_PS_PEER_PARAM_MAX_SP) + max_sp = sta->max_sp; + + params.param = WMI_AP_PS_PEER_PARAM_UAPSD; + |