1105 строки
31 KiB
C
1105 строки
31 KiB
C
/**
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* Copyright (c) 2014 Redpine Signals Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <linux/etherdevice.h>
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#include "rsi_debugfs.h"
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#include "rsi_mgmt.h"
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#include "rsi_common.h"
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static const struct ieee80211_channel rsi_2ghz_channels[] = {
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2412,
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.hw_value = 1 }, /* Channel 1 */
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2417,
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.hw_value = 2 }, /* Channel 2 */
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2422,
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.hw_value = 3 }, /* Channel 3 */
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2427,
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.hw_value = 4 }, /* Channel 4 */
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2432,
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.hw_value = 5 }, /* Channel 5 */
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2437,
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.hw_value = 6 }, /* Channel 6 */
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2442,
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.hw_value = 7 }, /* Channel 7 */
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2447,
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.hw_value = 8 }, /* Channel 8 */
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2452,
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.hw_value = 9 }, /* Channel 9 */
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2457,
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.hw_value = 10 }, /* Channel 10 */
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2462,
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.hw_value = 11 }, /* Channel 11 */
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2467,
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.hw_value = 12 }, /* Channel 12 */
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2472,
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.hw_value = 13 }, /* Channel 13 */
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{ .band = IEEE80211_BAND_2GHZ, .center_freq = 2484,
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.hw_value = 14 }, /* Channel 14 */
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};
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static const struct ieee80211_channel rsi_5ghz_channels[] = {
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5180,
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.hw_value = 36, }, /* Channel 36 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5200,
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.hw_value = 40, }, /* Channel 40 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5220,
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.hw_value = 44, }, /* Channel 44 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5240,
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.hw_value = 48, }, /* Channel 48 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5260,
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.hw_value = 52, }, /* Channel 52 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5280,
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.hw_value = 56, }, /* Channel 56 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5300,
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.hw_value = 60, }, /* Channel 60 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5320,
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.hw_value = 64, }, /* Channel 64 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5500,
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.hw_value = 100, }, /* Channel 100 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5520,
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.hw_value = 104, }, /* Channel 104 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5540,
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.hw_value = 108, }, /* Channel 108 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5560,
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.hw_value = 112, }, /* Channel 112 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5580,
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.hw_value = 116, }, /* Channel 116 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5600,
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.hw_value = 120, }, /* Channel 120 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5620,
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.hw_value = 124, }, /* Channel 124 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5640,
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.hw_value = 128, }, /* Channel 128 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5660,
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.hw_value = 132, }, /* Channel 132 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5680,
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.hw_value = 136, }, /* Channel 136 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5700,
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.hw_value = 140, }, /* Channel 140 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5745,
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.hw_value = 149, }, /* Channel 149 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5765,
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.hw_value = 153, }, /* Channel 153 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5785,
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.hw_value = 157, }, /* Channel 157 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5805,
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.hw_value = 161, }, /* Channel 161 */
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{ .band = IEEE80211_BAND_5GHZ, .center_freq = 5825,
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.hw_value = 165, }, /* Channel 165 */
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};
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struct ieee80211_rate rsi_rates[12] = {
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{ .bitrate = STD_RATE_01 * 5, .hw_value = RSI_RATE_1 },
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{ .bitrate = STD_RATE_02 * 5, .hw_value = RSI_RATE_2 },
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{ .bitrate = STD_RATE_5_5 * 5, .hw_value = RSI_RATE_5_5 },
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{ .bitrate = STD_RATE_11 * 5, .hw_value = RSI_RATE_11 },
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{ .bitrate = STD_RATE_06 * 5, .hw_value = RSI_RATE_6 },
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{ .bitrate = STD_RATE_09 * 5, .hw_value = RSI_RATE_9 },
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{ .bitrate = STD_RATE_12 * 5, .hw_value = RSI_RATE_12 },
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{ .bitrate = STD_RATE_18 * 5, .hw_value = RSI_RATE_18 },
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{ .bitrate = STD_RATE_24 * 5, .hw_value = RSI_RATE_24 },
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{ .bitrate = STD_RATE_36 * 5, .hw_value = RSI_RATE_36 },
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{ .bitrate = STD_RATE_48 * 5, .hw_value = RSI_RATE_48 },
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{ .bitrate = STD_RATE_54 * 5, .hw_value = RSI_RATE_54 },
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};
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const u16 rsi_mcsrates[8] = {
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RSI_RATE_MCS0, RSI_RATE_MCS1, RSI_RATE_MCS2, RSI_RATE_MCS3,
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RSI_RATE_MCS4, RSI_RATE_MCS5, RSI_RATE_MCS6, RSI_RATE_MCS7
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};
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/**
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* rsi_is_cipher_wep() - This function determines if the cipher is WEP or not.
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* @common: Pointer to the driver private structure.
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*
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* Return: If cipher type is WEP, a value of 1 is returned, else 0.
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*/
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bool rsi_is_cipher_wep(struct rsi_common *common)
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{
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if (((common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP104) ||
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(common->secinfo.gtk_cipher == WLAN_CIPHER_SUITE_WEP40)) &&
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(!common->secinfo.ptk_cipher))
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return true;
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else
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return false;
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}
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/**
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* rsi_register_rates_channels() - This function registers channels and rates.
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* @adapter: Pointer to the adapter structure.
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* @band: Operating band to be set.
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*
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* Return: None.
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*/
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static void rsi_register_rates_channels(struct rsi_hw *adapter, int band)
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{
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struct ieee80211_supported_band *sbands = &adapter->sbands[band];
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void *channels = NULL;
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if (band == IEEE80211_BAND_2GHZ) {
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channels = kmalloc(sizeof(rsi_2ghz_channels), GFP_KERNEL);
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memcpy(channels,
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rsi_2ghz_channels,
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sizeof(rsi_2ghz_channels));
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sbands->band = IEEE80211_BAND_2GHZ;
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sbands->n_channels = ARRAY_SIZE(rsi_2ghz_channels);
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sbands->bitrates = rsi_rates;
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sbands->n_bitrates = ARRAY_SIZE(rsi_rates);
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} else {
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channels = kmalloc(sizeof(rsi_5ghz_channels), GFP_KERNEL);
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memcpy(channels,
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rsi_5ghz_channels,
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sizeof(rsi_5ghz_channels));
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sbands->band = IEEE80211_BAND_5GHZ;
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sbands->n_channels = ARRAY_SIZE(rsi_5ghz_channels);
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sbands->bitrates = &rsi_rates[4];
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sbands->n_bitrates = ARRAY_SIZE(rsi_rates) - 4;
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}
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sbands->channels = channels;
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memset(&sbands->ht_cap, 0, sizeof(struct ieee80211_sta_ht_cap));
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sbands->ht_cap.ht_supported = true;
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sbands->ht_cap.cap = (IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
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IEEE80211_HT_CAP_SGI_20 |
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IEEE80211_HT_CAP_SGI_40);
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sbands->ht_cap.ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
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sbands->ht_cap.ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
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sbands->ht_cap.mcs.rx_mask[0] = 0xff;
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sbands->ht_cap.mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
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/* sbands->ht_cap.mcs.rx_highest = 0x82; */
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}
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/**
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* rsi_mac80211_detach() - This function is used to de-initialize the
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* Mac80211 stack.
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* @adapter: Pointer to the adapter structure.
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*
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* Return: None.
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*/
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void rsi_mac80211_detach(struct rsi_hw *adapter)
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{
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struct ieee80211_hw *hw = adapter->hw;
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if (hw) {
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ieee80211_stop_queues(hw);
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ieee80211_unregister_hw(hw);
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ieee80211_free_hw(hw);
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}
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rsi_remove_dbgfs(adapter);
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}
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EXPORT_SYMBOL_GPL(rsi_mac80211_detach);
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/**
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* rsi_indicate_tx_status() - This function indicates the transmit status.
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* @adapter: Pointer to the adapter structure.
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* @skb: Pointer to the socket buffer structure.
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* @status: Status
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*
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* Return: None.
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*/
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void rsi_indicate_tx_status(struct rsi_hw *adapter,
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struct sk_buff *skb,
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int status)
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{
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struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
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memset(info->driver_data, 0, IEEE80211_TX_INFO_DRIVER_DATA_SIZE);
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if (!status)
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info->flags |= IEEE80211_TX_STAT_ACK;
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ieee80211_tx_status_irqsafe(adapter->hw, skb);
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}
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/**
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* rsi_mac80211_tx() - This is the handler that 802.11 module calls for each
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* transmitted frame.SKB contains the buffer starting
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* from the IEEE 802.11 header.
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* @hw: Pointer to the ieee80211_hw structure.
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* @control: Pointer to the ieee80211_tx_control structure
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* @skb: Pointer to the socket buffer structure.
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*
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* Return: None
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*/
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static void rsi_mac80211_tx(struct ieee80211_hw *hw,
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struct ieee80211_tx_control *control,
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struct sk_buff *skb)
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{
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struct rsi_hw *adapter = hw->priv;
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struct rsi_common *common = adapter->priv;
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rsi_core_xmit(common, skb);
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}
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/**
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* rsi_mac80211_start() - This is first handler that 802.11 module calls, since
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* the driver init is complete by then, just
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* returns success.
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* @hw: Pointer to the ieee80211_hw structure.
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*
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* Return: 0 as success.
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*/
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static int rsi_mac80211_start(struct ieee80211_hw *hw)
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{
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struct rsi_hw *adapter = hw->priv;
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struct rsi_common *common = adapter->priv;
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mutex_lock(&common->mutex);
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common->iface_down = false;
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mutex_unlock(&common->mutex);
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return 0;
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}
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/**
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* rsi_mac80211_stop() - This is the last handler that 802.11 module calls.
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* @hw: Pointer to the ieee80211_hw structure.
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*
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* Return: None.
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*/
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static void rsi_mac80211_stop(struct ieee80211_hw *hw)
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{
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struct rsi_hw *adapter = hw->priv;
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struct rsi_common *common = adapter->priv;
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mutex_lock(&common->mutex);
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common->iface_down = true;
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mutex_unlock(&common->mutex);
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}
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/**
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* rsi_mac80211_add_interface() - This function is called when a netdevice
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* attached to the hardware is enabled.
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* @hw: Pointer to the ieee80211_hw structure.
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* @vif: Pointer to the ieee80211_vif structure.
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*
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* Return: ret: 0 on success, negative error code on failure.
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*/
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static int rsi_mac80211_add_interface(struct ieee80211_hw *hw,
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struct ieee80211_vif *vif)
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{
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struct rsi_hw *adapter = hw->priv;
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struct rsi_common *common = adapter->priv;
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int ret = -EOPNOTSUPP;
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mutex_lock(&common->mutex);
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switch (vif->type) {
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case NL80211_IFTYPE_STATION:
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if (!adapter->sc_nvifs) {
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++adapter->sc_nvifs;
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adapter->vifs[0] = vif;
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ret = rsi_set_vap_capabilities(common, STA_OPMODE);
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}
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break;
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default:
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rsi_dbg(ERR_ZONE,
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"%s: Interface type %d not supported\n", __func__,
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vif->type);
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}
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mutex_unlock(&common->mutex);
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return ret;
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}
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/**
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* rsi_mac80211_remove_interface() - This function notifies driver that an
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* interface is going down.
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* @hw: Pointer to the ieee80211_hw structure.
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* @vif: Pointer to the ieee80211_vif structure.
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*
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* Return: None.
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*/
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static void rsi_mac80211_remove_interface(struct ieee80211_hw *hw,
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struct ieee80211_vif *vif)
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{
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struct rsi_hw *adapter = hw->priv;
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struct rsi_common *common = adapter->priv;
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mutex_lock(&common->mutex);
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if (vif->type == NL80211_IFTYPE_STATION)
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adapter->sc_nvifs--;
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if (!memcmp(adapter->vifs[0], vif, sizeof(struct ieee80211_vif)))
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adapter->vifs[0] = NULL;
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mutex_unlock(&common->mutex);
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}
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/**
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* rsi_channel_change() - This function is a performs the checks
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* required for changing a channel and sets
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* the channel accordingly.
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* @hw: Pointer to the ieee80211_hw structure.
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*
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* Return: 0 on success, negative error code on failure.
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*/
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static int rsi_channel_change(struct ieee80211_hw *hw)
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{
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struct rsi_hw *adapter = hw->priv;
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struct rsi_common *common = adapter->priv;
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int status = -EOPNOTSUPP;
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struct ieee80211_channel *curchan = hw->conf.chandef.chan;
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u16 channel = curchan->hw_value;
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struct ieee80211_bss_conf *bss = &adapter->vifs[0]->bss_conf;
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rsi_dbg(INFO_ZONE,
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"%s: Set channel: %d MHz type: %d channel_no %d\n",
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__func__, curchan->center_freq,
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curchan->flags, channel);
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if (bss->assoc) {
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if (!common->hw_data_qs_blocked &&
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(rsi_get_connected_channel(adapter) != channel)) {
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rsi_dbg(INFO_ZONE, "blk data q %d\n", channel);
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if (!rsi_send_block_unblock_frame(common, true))
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common->hw_data_qs_blocked = true;
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}
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}
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status = rsi_band_check(common);
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if (!status)
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status = rsi_set_channel(adapter->priv, channel);
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if (bss->assoc) {
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if (common->hw_data_qs_blocked &&
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(rsi_get_connected_channel(adapter) == channel)) {
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rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel);
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if (!rsi_send_block_unblock_frame(common, false))
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common->hw_data_qs_blocked = false;
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}
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} else {
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if (common->hw_data_qs_blocked) {
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rsi_dbg(INFO_ZONE, "unblk data q %d\n", channel);
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if (!rsi_send_block_unblock_frame(common, false))
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common->hw_data_qs_blocked = false;
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}
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}
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return status;
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}
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/**
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* rsi_mac80211_config() - This function is a handler for configuration
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* requests. The stack calls this function to
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* change hardware configuration, e.g., channel.
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* @hw: Pointer to the ieee80211_hw structure.
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* @changed: Changed flags set.
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*
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* Return: 0 on success, negative error code on failure.
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*/
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static int rsi_mac80211_config(struct ieee80211_hw *hw,
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u32 changed)
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{
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struct rsi_hw *adapter = hw->priv;
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struct rsi_common *common = adapter->priv;
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int status = -EOPNOTSUPP;
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mutex_lock(&common->mutex);
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if (changed & IEEE80211_CONF_CHANGE_CHANNEL)
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status = rsi_channel_change(hw);
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mutex_unlock(&common->mutex);
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return status;
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}
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/**
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* rsi_get_connected_channel() - This function is used to get the current
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* connected channel number.
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* @adapter: Pointer to the adapter structure.
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*
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* Return: Current connected AP's channel number is returned.
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*/
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u16 rsi_get_connected_channel(struct rsi_hw *adapter)
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{
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struct ieee80211_vif *vif = adapter->vifs[0];
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if (vif) {
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struct ieee80211_bss_conf *bss = &vif->bss_conf;
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struct ieee80211_channel *channel = bss->chandef.chan;
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return channel->hw_value;
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}
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return 0;
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}
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/**
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* rsi_mac80211_bss_info_changed() - This function is a handler for config
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* requests related to BSS parameters that
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* 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.
|
|
* @action: ieee80211_ampdu_mlme_action enum.
|
|
* @sta: Pointer to the ieee80211_sta structure.
|
|
* @tid: Traffic identifier.
|
|
* @ssn: Pointer to ssn value.
|
|
* @buf_size: Buffer size (for kernel version > 2.6.38).
|
|
*
|
|
* Return: status: 0 on success, negative error code on failure.
|
|
*/
|
|
static int rsi_mac80211_ampdu_action(struct ieee80211_hw *hw,
|
|
struct ieee80211_vif *vif,
|
|
enum ieee80211_ampdu_mlme_action action,
|
|
struct ieee80211_sta *sta,
|
|
unsigned short tid,
|
|
unsigned short *ssn,
|
|
unsigned char buf_size)
|
|
{
|
|
int status = -EOPNOTSUPP;
|
|
struct rsi_hw *adapter = hw->priv;
|
|
struct rsi_common *common = adapter->priv;
|
|
u16 seq_no = 0;
|
|
u8 ii = 0;
|
|
|
|
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;
|
|
|
|
hw->flags = IEEE80211_HW_SIGNAL_DBM |
|
|
IEEE80211_HW_HAS_RATE_CONTROL |
|
|
IEEE80211_HW_AMPDU_AGGREGATION |
|
|
0;
|
|
|
|
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);
|
|
}
|