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- /**
- * Copyright (c) 2014 Redpine Signals 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 <linux/etherdevice.h>
- #include "rsi_debugfs.h"
- #include "rsi_mgmt.h"
- #include "rsi_common.h"
- static const struct ieee80211_channel rsi_2ghz_channels[] = {
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2412,
- .hw_value = 1 }, /* Channel 1 */
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2417,
- .hw_value = 2 }, /* Channel 2 */
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2422,
- .hw_value = 3 }, /* Channel 3 */
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2427,
- .hw_value = 4 }, /* Channel 4 */
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2432,
- .hw_value = 5 }, /* Channel 5 */
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2437,
- .hw_value = 6 }, /* Channel 6 */
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2442,
- .hw_value = 7 }, /* Channel 7 */
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2447,
- .hw_value = 8 }, /* Channel 8 */
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2452,
- .hw_value = 9 }, /* Channel 9 */
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2457,
- .hw_value = 10 }, /* Channel 10 */
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2462,
- .hw_value = 11 }, /* Channel 11 */
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2467,
- .hw_value = 12 }, /* Channel 12 */
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2472,
- .hw_value = 13 }, /* Channel 13 */
- { .band = IEEE80211_BAND_2GHZ, .center_freq = 2484,
- .hw_value = 14 }, /* Channel 14 */
- };
- static const struct ieee80211_channel rsi_5ghz_channels[] = {
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5180,
- .hw_value = 36, }, /* Channel 36 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5200,
- .hw_value = 40, }, /* Channel 40 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5220,
- .hw_value = 44, }, /* Channel 44 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5240,
- .hw_value = 48, }, /* Channel 48 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5260,
- .hw_value = 52, }, /* Channel 52 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5280,
- .hw_value = 56, }, /* Channel 56 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5300,
- .hw_value = 60, }, /* Channel 60 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5320,
- .hw_value = 64, }, /* Channel 64 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5500,
- .hw_value = 100, }, /* Channel 100 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5520,
- .hw_value = 104, }, /* Channel 104 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5540,
- .hw_value = 108, }, /* Channel 108 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5560,
- .hw_value = 112, }, /* Channel 112 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5580,
- .hw_value = 116, }, /* Channel 116 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5600,
- .hw_value = 120, }, /* Channel 120 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5620,
- .hw_value = 124, }, /* Channel 124 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5640,
- .hw_value = 128, }, /* Channel 128 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5660,
- .hw_value = 132, }, /* Channel 132 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5680,
- .hw_value = 136, }, /* Channel 136 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5700,
- .hw_value = 140, }, /* Channel 140 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5745,
- .hw_value = 149, }, /* Channel 149 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5765,
- .hw_value = 153, }, /* Channel 153 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5785,
- .hw_value = 157, }, /* Channel 157 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5805,
- .hw_value = 161, }, /* Channel 161 */
- { .band = IEEE80211_BAND_5GHZ, .center_freq = 5825,
- .hw_value = 165, }, /* Channel 165 */
- };
- struct ieee80211_rate rsi_rates[12] = {
- { .bitrate = STD_RATE_01 * 5, .hw_value = RSI_RATE_1 },
- { .bitrate = STD_RATE_02 * 5, .hw_value = RSI_RATE_2 },
- { .bitrate = STD_RATE_5_5 * 5, .hw_value = RSI_RATE_5_5 },
- { .bitrate = STD_RATE_11 * 5, .hw_value = RSI_RATE_11 },
- { .bitrate = STD_RATE_06 * 5, .hw_value = RSI_RATE_6 },
- { .bitrate = STD_RATE_09 * 5, .hw_value = RSI_RATE_9 },
- { .bitrate = STD_RATE_12 * 5, .hw_value = RSI_RATE_12 },
- { .bitrate = STD_RATE_18 * 5, .hw_value = RSI_RATE_18 },
- { .bitrate = STD_RATE_24 * 5, .hw_value = RSI_RATE_24 },
- { .bitrate = STD_RATE_36 * 5, .hw_value = RSI_RATE_36 },
- { .bitrate = STD_RATE_48 * 5, .hw_value = RSI_RATE_48 },
- { .bitrate = STD_RATE_54 * 5, .hw_value = RSI_RATE_54 },
- };
- const u16 rsi_mcsrates[8] = {
- RSI_RATE_MCS0, RSI_RATE_MCS1, RSI_RATE_MCS2, RSI_RATE_MCS3,
- RSI_RATE_MCS4, RSI_RATE_MCS5, RSI_RATE_MCS6, RSI_RATE_MCS7
- };
- /**
- * rsi_is_cipher_wep() - This function determines if the cipher is WEP or not.
- * @common: Pointer to the driver private structure.
- *
- * Return: If cipher type is WEP, a value of 1 is returned, else 0.
- */
- bool rsi_is_cipher_wep(struct rsi_common *common)
- {
- if (((common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP104) ||
- (common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP40)) &&
- (!common->secinfo.ptk_cipher))
- return true;
- else
- return false;
- }
- /**
- * rsi_register_rates_channels() - This function registers channels and rates.
- * @adapter: Pointer to the adapter structure.
- * @band: Operating band to be set.
- *
- * Return: None.
- */
- static void rsi_register_rates_channels(struct rsi_hw *adapter, int band)
- {
- struct ieee80211_supported_band *sbands = &adapter->sbands[band];
- void *channels = NULL;
- if (band == IEEE80211_BAND_2GHZ) {
- channels = kmalloc(sizeof(rsi_2ghz_channels), GFP_KERNEL);
- memcpy(channels,
- rsi_2ghz_channels,
- sizeof(rsi_2ghz_channels));
- sbands->band = IEEE80211_BAND_2GHZ;
- sbands->n_channels = ARRAY_SIZE(rsi_2ghz_channels);
- sbands->bitrates = rsi_rates;
- sbands->n_bitrates = ARRAY_SIZE(rsi_rates);
- } else {
- channels = kmalloc(sizeof(rsi_5ghz_channels), GFP_KERNEL);
- memcpy(channels,
- rsi_5ghz_channels,
- sizeof(rsi_5ghz_channels));
- sbands->band = IEEE80211_BAND_5GHZ;
- sbands->n_channels = ARRAY_SIZE(rsi_5ghz_channels);
- sbands->bitrates = &rsi_rates[4];
- sbands->n_bitrates = ARRAY_SIZE(rsi_rates) - 4;
- }
- sbands->channels = channels;
- memset(&sbands->ht_cap, 0, sizeof(struct ieee80211_sta_ht_cap));
- sbands->ht_cap.ht_supported = true;
- sbands->ht_cap.cap = (IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
- IEEE80211_HT_CAP_SGI_20 |
- IEEE80211_HT_CAP_SGI_40);
- sbands->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
- sbands->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
- sbands->ht_cap.mcs.rx_mask[0] = 0xff;
- sbands->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
- /* sbands->ht_cap.mcs.rx_highest = 0x82; */
- }
- /**
- * rsi_mac80211_detach() - This function is used to de-initialize the
- * Mac80211 stack.
- * @adapter: Pointer to the adapter structure.
- *
- * Return: None.
- */
- void rsi_mac80211_detach(struct rsi_hw *adapter)
- {
- struct ieee80211_hw *hw = adapter->hw;
- if (hw) {
- ieee80211_stop_queues(hw);
- ieee80211_unregister_hw(hw);
- ieee80211_free_hw(hw);
- }
- rsi_remove_dbgfs(adapter);
- }
- EXPORT_SYMBOL_GPL(rsi_mac80211_detach);
- /**
- * rsi_indicate_tx_status() - This function indicates the transmit status.
- * @adapter: Pointer to the adapter structure.
- * @skb: Pointer to the socket buffer structure.
- * @status: Status
- *
- * Return: None.
- */
- void rsi_indicate_tx_status(struct rsi_hw *adapter,
- struct sk_buff *skb,
- int status)
- {
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- memset(info->driver_data, 0, IEEE80211_TX_INFO_DRIVER_DATA_SIZE);
- if (!status)
- info->flags |= IEEE80211_TX_STAT_ACK;
- ieee80211_tx_status_irqsafe(adapter->hw, skb);
- }
- /**
- * rsi_mac80211_tx() - This is the handler that 802.11 module calls for each
- * transmitted frame.SKB contains the buffer starting
- * from the IEEE 802.11 header.
- * @hw: Pointer to the ieee80211_hw structure.
- * @control: Pointer to the ieee80211_tx_control structure
- * @skb: Pointer to the socket buffer structure.
- *
- * Return: None
- */
- static void rsi_mac80211_tx(struct ieee80211_hw *hw,
- struct ieee80211_tx_control *control,
- struct sk_buff *skb)
- {
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- rsi_core_xmit(common, skb);
- }
- /**
- * rsi_mac80211_start() - This is first handler that 802.11 module calls, since
- * the driver init is complete by then, just
- * returns success.
- * @hw: Pointer to the ieee80211_hw structure.
- *
- * Return: 0 as success.
- */
- static int rsi_mac80211_start(struct ieee80211_hw *hw)
- {
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- mutex_lock(&common->mutex);
- common->iface_down = false;
- mutex_unlock(&common->mutex);
- return 0;
- }
- /**
- * rsi_mac80211_stop() - This is the last handler that 802.11 module calls.
- * @hw: Pointer to the ieee80211_hw structure.
- *
- * Return: None.
- */
- static void rsi_mac80211_stop(struct ieee80211_hw *hw)
- {
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- mutex_lock(&common->mutex);
- common->iface_down = true;
- mutex_unlock(&common->mutex);
- }
- /**
- * rsi_mac80211_add_interface() - This function is called when a netdevice
- * attached to the hardware is enabled.
- * @hw: Pointer to the ieee80211_hw structure.
- * @vif: Pointer to the ieee80211_vif structure.
- *
- * Return: ret: 0 on success, negative error code on failure.
- */
- static int rsi_mac80211_add_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
- {
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- int ret = -EOPNOTSUPP;
- mutex_lock(&common->mutex);
- switch (vif->type) {
- case NL80211_IFTYPE_STATION:
- if (!adapter->sc_nvifs) {
- ++adapter->sc_nvifs;
- adapter->vifs[0] = vif;
- ret = rsi_set_vap_capabilities(common, STA_OPMODE);
- }
- break;
- default:
- rsi_dbg(ERR_ZONE,
- "%s: Interface type %d not supported\n", __func__,
- vif->type);
- }
- mutex_unlock(&common->mutex);
- return ret;
- }
- /**
- * rsi_mac80211_remove_interface() - This function notifies driver that an
- * interface is going down.
- * @hw: Pointer to the ieee80211_hw structure.
- * @vif: Pointer to the ieee80211_vif structure.
- *
- * Return: None.
- */
- static void rsi_mac80211_remove_interface(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif)
- {
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- mutex_lock(&common->mutex);
- if (vif->type == NL80211_IFTYPE_STATION)
- adapter->sc_nvifs--;
- if (!memcmp(adapter->vifs[0], vif, sizeof(struct ieee80211_vif)))
- adapter->vifs[0] = NULL;
- mutex_unlock(&common->mutex);
- }
- /**
- * rsi_channel_change() - This function is a performs the checks
- * required for changing a channel and sets
- * the channel accordingly.
- * @hw: Pointer to the ieee80211_hw structure.
- *
- * Return: 0 on success, negative error code on failure.
- */
- static int rsi_channel_change(struct ieee80211_hw *hw)
- {
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- int status = -EOPNOTSUPP;
- struct ieee80211_channel *curchan = hw->conf.chandef.chan;
- u16 channel = curchan->hw_value;
- struct ieee80211_bss_conf *bss = &adapter->vifs[0]->bss_conf;
- rsi_dbg(INFO_ZONE,
- "%s: Set channel: %d MHz type: %d channel_no %d\n",
- __func__, curchan->center_freq,
- curchan->flags, channel);
- if (bss->assoc) {
- if (!common->hw_data_qs_blocked &&
- (rsi_get_connected_channel(adapter) != channel)) {
- rsi_dbg(INFO_ZONE, "blk data q %d\n", channel);
- if (!rsi_send_block_unblock_frame(common, true))
- common->hw_data_qs_blocked = true;
- }
- }
- status = rsi_band_check(common);
- if (!status)
- status = rsi_set_channel(adapter->priv, channel);
- if (bss->assoc) {
- if (common->hw_data_qs_blocked &&
- (rsi_get_connected_channel(adapter) == channel)) {
- rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel);
- if (!rsi_send_block_unblock_frame(common, false))
- common->hw_data_qs_blocked = false;
- }
- } else {
- if (common->hw_data_qs_blocked) {
- rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel);
- if (!rsi_send_block_unblock_frame(common, false))
- common->hw_data_qs_blocked = false;
- }
- }
- return status;
- }
- /**
- * rsi_mac80211_config() - This function is a handler for configuration
- * requests. The stack calls this function to
- * change hardware configuration, e.g., channel.
- * @hw: Pointer to the ieee80211_hw structure.
- * @changed: Changed flags set.
- *
- * Return: 0 on success, negative error code on failure.
- */
- static int rsi_mac80211_config(struct ieee80211_hw *hw,
- u32 changed)
- {
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- int status = -EOPNOTSUPP;
- mutex_lock(&common->mutex);
- if (changed & IEEE80211_CONF_CHANGE_CHANNEL)
- status = rsi_channel_change(hw);
- mutex_unlock(&common->mutex);
- return status;
- }
- /**
- * rsi_get_connected_channel() - This function is used to get the current
- * connected channel number.
- * @adapter: Pointer to the adapter structure.
- *
- * Return: Current connected AP's channel number is returned.
- */
- u16 rsi_get_connected_channel(struct rsi_hw *adapter)
- {
- struct ieee80211_vif *vif = adapter->vifs[0];
- if (vif) {
- struct ieee80211_bss_conf *bss = &vif->bss_conf;
- struct ieee80211_channel *channel = bss->chandef.chan;
- return channel->hw_value;
- }
- return 0;
- }
- /**
- * rsi_mac80211_bss_info_changed() - This function is a handler for config
- * requests related to BSS parameters that
- * may vary during BSS's lifespan.
- * @hw: Pointer to the ieee80211_hw structure.
- * @vif: Pointer to the ieee80211_vif structure.
- * @bss_conf: Pointer to the ieee80211_bss_conf structure.
- * @changed: Changed flags set.
- *
- * Return: None.
- */
- static void rsi_mac80211_bss_info_changed(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_bss_conf *bss_conf,
- u32 changed)
- {
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- mutex_lock(&common->mutex);
- if (changed & BSS_CHANGED_ASSOC) {
- rsi_dbg(INFO_ZONE, "%s: Changed Association status: %d\n",
- __func__, bss_conf->assoc);
- rsi_inform_bss_status(common,
- bss_conf->assoc,
- bss_conf->bssid,
- bss_conf->qos,
- bss_conf->aid);
- }
- if (changed & BSS_CHANGED_CQM) {
- common->cqm_info.last_cqm_event_rssi = 0;
- common->cqm_info.rssi_thold = bss_conf->cqm_rssi_thold;
- common->cqm_info.rssi_hyst = bss_conf->cqm_rssi_hyst;
- rsi_dbg(INFO_ZONE, "RSSI throld & hysteresis are: %d %d\n",
- common->cqm_info.rssi_thold,
- common->cqm_info.rssi_hyst);
- }
- mutex_unlock(&common->mutex);
- }
- /**
- * rsi_mac80211_conf_filter() - This function configure the device's RX filter.
- * @hw: Pointer to the ieee80211_hw structure.
- * @changed: Changed flags set.
- * @total_flags: Total initial flags set.
- * @multicast: Multicast.
- *
- * Return: None.
- */
- static void rsi_mac80211_conf_filter(struct ieee80211_hw *hw,
- u32 changed_flags,
- u32 *total_flags,
- u64 multicast)
- {
- /* Not doing much here as of now */
- *total_flags &= RSI_SUPP_FILTERS;
- }
- /**
- * rsi_mac80211_conf_tx() - This function configures TX queue parameters
- * (EDCF (aifs, cw_min, cw_max), bursting)
- * for a hardware TX queue.
- * @hw: Pointer to the ieee80211_hw structure
- * @vif: Pointer to the ieee80211_vif structure.
- * @queue: Queue number.
- * @params: Pointer to ieee80211_tx_queue_params structure.
- *
- * Return: 0 on success, negative error code on failure.
- */
- static int rsi_mac80211_conf_tx(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif, u16 queue,
- const struct ieee80211_tx_queue_params *params)
- {
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- u8 idx = 0;
- if (queue >= IEEE80211_NUM_ACS)
- return 0;
- rsi_dbg(INFO_ZONE,
- "%s: Conf queue %d, aifs: %d, cwmin: %d cwmax: %d, txop: %d\n",
- __func__, queue, params->aifs,
- params->cw_min, params->cw_max, params->txop);
- mutex_lock(&common->mutex);
- /* Map into the way the f/w expects */
- switch (queue) {
- case IEEE80211_AC_VO:
- idx = VO_Q;
- break;
- case IEEE80211_AC_VI:
- idx = VI_Q;
- break;
- case IEEE80211_AC_BE:
- idx = BE_Q;
- break;
- case IEEE80211_AC_BK:
- idx = BK_Q;
- break;
- default:
- idx = BE_Q;
- break;
- }
- memcpy(&common->edca_params[idx],
- params,
- sizeof(struct ieee80211_tx_queue_params));
- mutex_unlock(&common->mutex);
- return 0;
- }
- /**
- * rsi_hal_key_config() - This function loads the keys into the firmware.
- * @hw: Pointer to the ieee80211_hw structure.
- * @vif: Pointer to the ieee80211_vif structure.
- * @key: Pointer to the ieee80211_key_conf structure.
- *
- * Return: status: 0 on success, -1 on failure.
- */
- static int rsi_hal_key_config(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_key_conf *key)
- {
- struct rsi_hw *adapter = hw->priv;
- int status;
- u8 key_type;
- if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
- key_type = RSI_PAIRWISE_KEY;
- else
- key_type = RSI_GROUP_KEY;
- rsi_dbg(ERR_ZONE, "%s: Cipher 0x%x key_type: %d key_len: %d\n",
- __func__, key->cipher, key_type, key->keylen);
- if ((key->cipher == WLAN_CIPHER_SUITE_WEP104) ||
- (key->cipher == WLAN_CIPHER_SUITE_WEP40)) {
- status = rsi_hal_load_key(adapter->priv,
- key->key,
- key->keylen,
- RSI_PAIRWISE_KEY,
- key->keyidx,
- key->cipher);
- if (status)
- return status;
- }
- return rsi_hal_load_key(adapter->priv,
- key->key,
- key->keylen,
- key_type,
- key->keyidx,
- key->cipher);
- }
- /**
- * rsi_mac80211_set_key() - This function sets type of key to be loaded.
- * @hw: Pointer to the ieee80211_hw structure.
- * @cmd: enum set_key_cmd.
- * @vif: Pointer to the ieee80211_vif structure.
- * @sta: Pointer to the ieee80211_sta structure.
- * @key: Pointer to the ieee80211_key_conf structure.
- *
- * Return: status: 0 on success, negative error code on failure.
- */
- static int rsi_mac80211_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 rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- struct security_info *secinfo = &common->secinfo;
- int status;
- mutex_lock(&common->mutex);
- switch (cmd) {
- case SET_KEY:
- secinfo->security_enable = true;
- status = rsi_hal_key_config(hw, vif, key);
- if (status) {
- mutex_unlock(&common->mutex);
- return status;
- }
- if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE)
- secinfo->ptk_cipher = key->cipher;
- else
- secinfo->gtk_cipher = key->cipher;
- key->hw_key_idx = key->keyidx;
- key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
- rsi_dbg(ERR_ZONE, "%s: RSI set_key\n", __func__);
- break;
- case DISABLE_KEY:
- secinfo->security_enable = false;
- rsi_dbg(ERR_ZONE, "%s: RSI del key\n", __func__);
- memset(key, 0, sizeof(struct ieee80211_key_conf));
- status = rsi_hal_key_config(hw, vif, key);
- break;
- default:
- status = -EOPNOTSUPP;
- break;
- }
- mutex_unlock(&common->mutex);
- return status;
- }
- /**
- * rsi_mac80211_ampdu_action() - This function selects the AMPDU action for
- * the corresponding mlme_action flag and
- * informs the f/w regarding this.
- * @hw: Pointer to the ieee80211_hw structure.
- * @vif: Pointer to the ieee80211_vif structure.
- * @params: Pointer to A-MPDU action parameters
- *
- * Return: status: 0 on success, negative error code on failure.
- */
- static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_ampdu_params *params)
- {
- int status = -EOPNOTSUPP;
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- u16 seq_no = 0;
- u8 ii = 0;
- struct ieee80211_sta *sta = params->sta;
- enum ieee80211_ampdu_mlme_action action = params->action;
- u16 tid = params->tid;
- u16 *ssn = ¶ms->ssn;
- u8 buf_size = params->buf_size;
- for (ii = 0; ii < RSI_MAX_VIFS; ii++) {
- if (vif == adapter->vifs[ii])
- break;
- }
- mutex_lock(&common->mutex);
- rsi_dbg(INFO_ZONE, "%s: AMPDU action %d called\n", __func__, action);
- if (ssn != NULL)
- seq_no = *ssn;
- switch (action) {
- case IEEE80211_AMPDU_RX_START:
- status = rsi_send_aggregation_params_frame(common,
- tid,
- seq_no,
- buf_size,
- STA_RX_ADDBA_DONE);
- break;
- case IEEE80211_AMPDU_RX_STOP:
- status = rsi_send_aggregation_params_frame(common,
- tid,
- 0,
- buf_size,
- STA_RX_DELBA);
- break;
- case IEEE80211_AMPDU_TX_START:
- common->vif_info[ii].seq_start = seq_no;
- ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid);
- status = 0;
- break;
- case IEEE80211_AMPDU_TX_STOP_CONT:
- case IEEE80211_AMPDU_TX_STOP_FLUSH:
- case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
- status = rsi_send_aggregation_params_frame(common,
- tid,
- seq_no,
- buf_size,
- STA_TX_DELBA);
- if (!status)
- ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);
- break;
- case IEEE80211_AMPDU_TX_OPERATIONAL:
- status = rsi_send_aggregation_params_frame(common,
- tid,
- common->vif_info[ii]
- .seq_start,
- buf_size,
- STA_TX_ADDBA_DONE);
- break;
- default:
- rsi_dbg(ERR_ZONE, "%s: Uknown AMPDU action\n", __func__);
- break;
- }
- mutex_unlock(&common->mutex);
- return status;
- }
- /**
- * rsi_mac80211_set_rts_threshold() - This function sets rts threshold value.
- * @hw: Pointer to the ieee80211_hw structure.
- * @value: Rts threshold value.
- *
- * Return: 0 on success.
- */
- static int rsi_mac80211_set_rts_threshold(struct ieee80211_hw *hw,
- u32 value)
- {
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- mutex_lock(&common->mutex);
- common->rts_threshold = value;
- mutex_unlock(&common->mutex);
- return 0;
- }
- /**
- * rsi_mac80211_set_rate_mask() - This function sets bitrate_mask to be used.
- * @hw: Pointer to the ieee80211_hw structure
- * @vif: Pointer to the ieee80211_vif structure.
- * @mask: Pointer to the cfg80211_bitrate_mask structure.
- *
- * Return: 0 on success.
- */
- static int rsi_mac80211_set_rate_mask(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- const struct cfg80211_bitrate_mask *mask)
- {
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- enum ieee80211_band band = hw->conf.chandef.chan->band;
- mutex_lock(&common->mutex);
- common->fixedrate_mask[band] = 0;
- if (mask->control[band].legacy == 0xfff) {
- common->fixedrate_mask[band] =
- (mask->control[band].ht_mcs[0] << 12);
- } else {
- common->fixedrate_mask[band] =
- mask->control[band].legacy;
- }
- mutex_unlock(&common->mutex);
- return 0;
- }
- /**
- * rsi_perform_cqm() - This function performs cqm.
- * @common: Pointer to the driver private structure.
- * @bssid: pointer to the bssid.
- * @rssi: RSSI value.
- */
- static void rsi_perform_cqm(struct rsi_common *common,
- u8 *bssid,
- s8 rssi)
- {
- struct rsi_hw *adapter = common->priv;
- s8 last_event = common->cqm_info.last_cqm_event_rssi;
- int thold = common->cqm_info.rssi_thold;
- u32 hyst = common->cqm_info.rssi_hyst;
- enum nl80211_cqm_rssi_threshold_event event;
- if (rssi < thold && (last_event == 0 || rssi < (last_event - hyst)))
- event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
- else if (rssi > thold &&
- (last_event == 0 || rssi > (last_event + hyst)))
- event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
- else
- return;
- common->cqm_info.last_cqm_event_rssi = rssi;
- rsi_dbg(INFO_ZONE, "CQM: Notifying event: %d\n", event);
- ieee80211_cqm_rssi_notify(adapter->vifs[0], event, GFP_KERNEL);
- return;
- }
- /**
- * rsi_fill_rx_status() - This function fills rx status in
- * ieee80211_rx_status structure.
- * @hw: Pointer to the ieee80211_hw structure.
- * @skb: Pointer to the socket buffer structure.
- * @common: Pointer to the driver private structure.
- * @rxs: Pointer to the ieee80211_rx_status structure.
- *
- * Return: None.
- */
- static void rsi_fill_rx_status(struct ieee80211_hw *hw,
- struct sk_buff *skb,
- struct rsi_common *common,
- struct ieee80211_rx_status *rxs)
- {
- struct ieee80211_bss_conf *bss = &common->priv->vifs[0]->bss_conf;
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct skb_info *rx_params = (struct skb_info *)info->driver_data;
- struct ieee80211_hdr *hdr;
- char rssi = rx_params->rssi;
- u8 hdrlen = 0;
- u8 channel = rx_params->channel;
- s32 freq;
- hdr = ((struct ieee80211_hdr *)(skb->data));
- hdrlen = ieee80211_hdrlen(hdr->frame_control);
- memset(info, 0, sizeof(struct ieee80211_tx_info));
- rxs->signal = -(rssi);
- rxs->band = common->band;
- freq = ieee80211_channel_to_frequency(channel, rxs->band);
- if (freq)
- rxs->freq = freq;
- if (ieee80211_has_protected(hdr->frame_control)) {
- if (rsi_is_cipher_wep(common)) {
- memmove(skb->data + 4, skb->data, hdrlen);
- skb_pull(skb, 4);
- } else {
- memmove(skb->data + 8, skb->data, hdrlen);
- skb_pull(skb, 8);
- rxs->flag |= RX_FLAG_MMIC_STRIPPED;
- }
- rxs->flag |= RX_FLAG_DECRYPTED;
- rxs->flag |= RX_FLAG_IV_STRIPPED;
- }
- /* CQM only for connected AP beacons, the RSSI is a weighted avg */
- if (bss->assoc && !(memcmp(bss->bssid, hdr->addr2, ETH_ALEN))) {
- if (ieee80211_is_beacon(hdr->frame_control))
- rsi_perform_cqm(common, hdr->addr2, rxs->signal);
- }
- return;
- }
- /**
- * rsi_indicate_pkt_to_os() - This function sends recieved packet to mac80211.
- * @common: Pointer to the driver private structure.
- * @skb: Pointer to the socket buffer structure.
- *
- * Return: None.
- */
- void rsi_indicate_pkt_to_os(struct rsi_common *common,
- struct sk_buff *skb)
- {
- struct rsi_hw *adapter = common->priv;
- struct ieee80211_hw *hw = adapter->hw;
- struct ieee80211_rx_status *rx_status = IEEE80211_SKB_RXCB(skb);
- if ((common->iface_down) || (!adapter->sc_nvifs)) {
- dev_kfree_skb(skb);
- return;
- }
- /* filling in the ieee80211_rx_status flags */
- rsi_fill_rx_status(hw, skb, common, rx_status);
- ieee80211_rx_irqsafe(hw, skb);
- }
- static void rsi_set_min_rate(struct ieee80211_hw *hw,
- struct ieee80211_sta *sta,
- struct rsi_common *common)
- {
- u8 band = hw->conf.chandef.chan->band;
- u8 ii;
- u32 rate_bitmap;
- bool matched = false;
- common->bitrate_mask[band] = sta->supp_rates[band];
- rate_bitmap = (common->fixedrate_mask[band] & sta->supp_rates[band]);
- if (rate_bitmap & 0xfff) {
- /* Find out the min rate */
- for (ii = 0; ii < ARRAY_SIZE(rsi_rates); ii++) {
- if (rate_bitmap & BIT(ii)) {
- common->min_rate = rsi_rates[ii].hw_value;
- matched = true;
- break;
- }
- }
- }
- common->vif_info[0].is_ht = sta->ht_cap.ht_supported;
- if ((common->vif_info[0].is_ht) && (rate_bitmap >> 12)) {
- for (ii = 0; ii < ARRAY_SIZE(rsi_mcsrates); ii++) {
- if ((rate_bitmap >> 12) & BIT(ii)) {
- common->min_rate = rsi_mcsrates[ii];
- matched = true;
- break;
- }
- }
- }
- if (!matched)
- common->min_rate = 0xffff;
- }
- /**
- * rsi_mac80211_sta_add() - This function notifies driver about a peer getting
- * connected.
- * @hw: pointer to the ieee80211_hw structure.
- * @vif: Pointer to the ieee80211_vif structure.
- * @sta: Pointer to the ieee80211_sta structure.
- *
- * Return: 0 on success, -1 on failure.
- */
- static int rsi_mac80211_sta_add(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta)
- {
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- mutex_lock(&common->mutex);
- rsi_set_min_rate(hw, sta, common);
- if ((sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20) ||
- (sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40)) {
- common->vif_info[0].sgi = true;
- }
- if (sta->ht_cap.ht_supported)
- ieee80211_start_tx_ba_session(sta, 0, 0);
- mutex_unlock(&common->mutex);
- return 0;
- }
- /**
- * rsi_mac80211_sta_remove() - This function notifies driver about a peer
- * getting disconnected.
- * @hw: Pointer to the ieee80211_hw structure.
- * @vif: Pointer to the ieee80211_vif structure.
- * @sta: Pointer to the ieee80211_sta structure.
- *
- * Return: 0 on success, -1 on failure.
- */
- static int rsi_mac80211_sta_remove(struct ieee80211_hw *hw,
- struct ieee80211_vif *vif,
- struct ieee80211_sta *sta)
- {
- struct rsi_hw *adapter = hw->priv;
- struct rsi_common *common = adapter->priv;
- mutex_lock(&common->mutex);
- /* Resetting all the fields to default values */
- common->bitrate_mask[IEEE80211_BAND_2GHZ] = 0;
- common->bitrate_mask[IEEE80211_BAND_5GHZ] = 0;
- common->min_rate = 0xffff;
- common->vif_info[0].is_ht = false;
- common->vif_info[0].sgi = false;
- common->vif_info[0].seq_start = 0;
- common->secinfo.ptk_cipher = 0;
- common->secinfo.gtk_cipher = 0;
- mutex_unlock(&common->mutex);
- return 0;
- }
- static struct ieee80211_ops mac80211_ops = {
- .tx = rsi_mac80211_tx,
- .start = rsi_mac80211_start,
- .stop = rsi_mac80211_stop,
- .add_interface = rsi_mac80211_add_interface,
- .remove_interface = rsi_mac80211_remove_interface,
- .config = rsi_mac80211_config,
- .bss_info_changed = rsi_mac80211_bss_info_changed,
- .conf_tx = rsi_mac80211_conf_tx,
- .configure_filter = rsi_mac80211_conf_filter,
- .set_key = rsi_mac80211_set_key,
- .set_rts_threshold = rsi_mac80211_set_rts_threshold,
- .set_bitrate_mask = rsi_mac80211_set_rate_mask,
- .ampdu_action = rsi_mac80211_ampdu_action,
- .sta_add = rsi_mac80211_sta_add,
- .sta_remove = rsi_mac80211_sta_remove,
- };
- /**
- * rsi_mac80211_attach() - This function is used to initialize Mac80211 stack.
- * @common: Pointer to the driver private structure.
- *
- * Return: 0 on success, -1 on failure.
- */
- int rsi_mac80211_attach(struct rsi_common *common)
- {
- int status = 0;
- struct ieee80211_hw *hw = NULL;
- struct wiphy *wiphy = NULL;
- struct rsi_hw *adapter = common->priv;
- u8 addr_mask[ETH_ALEN] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x3};
- rsi_dbg(INIT_ZONE, "%s: Performing mac80211 attach\n", __func__);
- hw = ieee80211_alloc_hw(sizeof(struct rsi_hw), &mac80211_ops);
- if (!hw) {
- rsi_dbg(ERR_ZONE, "%s: ieee80211 hw alloc failed\n", __func__);
- return -ENOMEM;
- }
- wiphy = hw->wiphy;
- SET_IEEE80211_DEV(hw, adapter->device);
- hw->priv = adapter;
- adapter->hw = hw;
- ieee80211_hw_set(hw, SIGNAL_DBM);
- ieee80211_hw_set(hw, HAS_RATE_CONTROL);
- ieee80211_hw_set(hw, AMPDU_AGGREGATION);
- hw->queues = MAX_HW_QUEUES;
- hw->extra_tx_headroom = RSI_NEEDED_HEADROOM;
- hw->max_rates = 1;
- hw->max_rate_tries = MAX_RETRIES;
- hw->max_tx_aggregation_subframes = 6;
- rsi_register_rates_channels(adapter, IEEE80211_BAND_2GHZ);
- rsi_register_rates_channels(adapter, IEEE80211_BAND_5GHZ);
- hw->rate_control_algorithm = "AARF";
- SET_IEEE80211_PERM_ADDR(hw, common->mac_addr);
- ether_addr_copy(hw->wiphy->addr_mask, addr_mask);
- wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION);
- wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
- wiphy->retry_short = RETRY_SHORT;
- wiphy->retry_long = RETRY_LONG;
- wiphy->frag_threshold = IEEE80211_MAX_FRAG_THRESHOLD;
- wiphy->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
- wiphy->flags = 0;
- wiphy->available_antennas_rx = 1;
- wiphy->available_antennas_tx = 1;
- wiphy->bands[IEEE80211_BAND_2GHZ] =
- &adapter->sbands[IEEE80211_BAND_2GHZ];
- wiphy->bands[IEEE80211_BAND_5GHZ] =
- &adapter->sbands[IEEE80211_BAND_5GHZ];
- status = ieee80211_register_hw(hw);
- if (status)
- return status;
- return rsi_init_dbgfs(adapter);
- }
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