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569 lines
17 KiB
569 lines
17 KiB
// SPDX-License-Identifier: GPL-2.0-only |
|
/* |
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* HT handling |
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* |
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* Copyright 2003, Jouni Malinen <[email protected]> |
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* Copyright 2002-2005, Instant802 Networks, Inc. |
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* Copyright 2005-2006, Devicescape Software, Inc. |
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* Copyright 2006-2007 Jiri Benc <[email protected]> |
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* Copyright 2007, Michael Wu <[email protected]> |
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* Copyright 2007-2010, Intel Corporation |
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* Copyright 2017 Intel Deutschland GmbH |
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* Copyright(c) 2020-2021 Intel Corporation |
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*/ |
|
|
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#include <linux/ieee80211.h> |
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#include <linux/export.h> |
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#include <net/mac80211.h> |
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#include "ieee80211_i.h" |
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#include "rate.h" |
|
|
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static void __check_htcap_disable(struct ieee80211_ht_cap *ht_capa, |
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struct ieee80211_ht_cap *ht_capa_mask, |
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struct ieee80211_sta_ht_cap *ht_cap, |
|
u16 flag) |
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{ |
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__le16 le_flag = cpu_to_le16(flag); |
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if (ht_capa_mask->cap_info & le_flag) { |
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if (!(ht_capa->cap_info & le_flag)) |
|
ht_cap->cap &= ~flag; |
|
} |
|
} |
|
|
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static void __check_htcap_enable(struct ieee80211_ht_cap *ht_capa, |
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struct ieee80211_ht_cap *ht_capa_mask, |
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struct ieee80211_sta_ht_cap *ht_cap, |
|
u16 flag) |
|
{ |
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__le16 le_flag = cpu_to_le16(flag); |
|
|
|
if ((ht_capa_mask->cap_info & le_flag) && |
|
(ht_capa->cap_info & le_flag)) |
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ht_cap->cap |= flag; |
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} |
|
|
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void ieee80211_apply_htcap_overrides(struct ieee80211_sub_if_data *sdata, |
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struct ieee80211_sta_ht_cap *ht_cap) |
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{ |
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struct ieee80211_ht_cap *ht_capa, *ht_capa_mask; |
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u8 *scaps, *smask; |
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int i; |
|
|
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if (!ht_cap->ht_supported) |
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return; |
|
|
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switch (sdata->vif.type) { |
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case NL80211_IFTYPE_STATION: |
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ht_capa = &sdata->u.mgd.ht_capa; |
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ht_capa_mask = &sdata->u.mgd.ht_capa_mask; |
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break; |
|
case NL80211_IFTYPE_ADHOC: |
|
ht_capa = &sdata->u.ibss.ht_capa; |
|
ht_capa_mask = &sdata->u.ibss.ht_capa_mask; |
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break; |
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default: |
|
WARN_ON_ONCE(1); |
|
return; |
|
} |
|
|
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scaps = (u8 *)(&ht_capa->mcs.rx_mask); |
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smask = (u8 *)(&ht_capa_mask->mcs.rx_mask); |
|
|
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/* NOTE: If you add more over-rides here, update register_hw |
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* ht_capa_mod_mask logic in main.c as well. |
|
* And, if this method can ever change ht_cap.ht_supported, fix |
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* the check in ieee80211_add_ht_ie. |
|
*/ |
|
|
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/* check for HT over-rides, MCS rates first. */ |
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for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { |
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u8 m = smask[i]; |
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ht_cap->mcs.rx_mask[i] &= ~m; /* turn off all masked bits */ |
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/* Add back rates that are supported */ |
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ht_cap->mcs.rx_mask[i] |= (m & scaps[i]); |
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} |
|
|
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/* Force removal of HT-40 capabilities? */ |
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__check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, |
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IEEE80211_HT_CAP_SUP_WIDTH_20_40); |
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__check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, |
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IEEE80211_HT_CAP_SGI_40); |
|
|
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/* Allow user to disable SGI-20 (SGI-40 is handled above) */ |
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__check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, |
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IEEE80211_HT_CAP_SGI_20); |
|
|
|
/* Allow user to disable the max-AMSDU bit. */ |
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__check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, |
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IEEE80211_HT_CAP_MAX_AMSDU); |
|
|
|
/* Allow user to disable LDPC */ |
|
__check_htcap_disable(ht_capa, ht_capa_mask, ht_cap, |
|
IEEE80211_HT_CAP_LDPC_CODING); |
|
|
|
/* Allow user to enable 40 MHz intolerant bit. */ |
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__check_htcap_enable(ht_capa, ht_capa_mask, ht_cap, |
|
IEEE80211_HT_CAP_40MHZ_INTOLERANT); |
|
|
|
/* Allow user to enable TX STBC bit */ |
|
__check_htcap_enable(ht_capa, ht_capa_mask, ht_cap, |
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IEEE80211_HT_CAP_TX_STBC); |
|
|
|
/* Allow user to configure RX STBC bits */ |
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if (ht_capa_mask->cap_info & cpu_to_le16(IEEE80211_HT_CAP_RX_STBC)) |
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ht_cap->cap |= le16_to_cpu(ht_capa->cap_info) & |
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IEEE80211_HT_CAP_RX_STBC; |
|
|
|
/* Allow user to decrease AMPDU factor */ |
|
if (ht_capa_mask->ampdu_params_info & |
|
IEEE80211_HT_AMPDU_PARM_FACTOR) { |
|
u8 n = ht_capa->ampdu_params_info & |
|
IEEE80211_HT_AMPDU_PARM_FACTOR; |
|
if (n < ht_cap->ampdu_factor) |
|
ht_cap->ampdu_factor = n; |
|
} |
|
|
|
/* Allow the user to increase AMPDU density. */ |
|
if (ht_capa_mask->ampdu_params_info & |
|
IEEE80211_HT_AMPDU_PARM_DENSITY) { |
|
u8 n = (ht_capa->ampdu_params_info & |
|
IEEE80211_HT_AMPDU_PARM_DENSITY) |
|
>> IEEE80211_HT_AMPDU_PARM_DENSITY_SHIFT; |
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if (n > ht_cap->ampdu_density) |
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ht_cap->ampdu_density = n; |
|
} |
|
} |
|
|
|
|
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bool ieee80211_ht_cap_ie_to_sta_ht_cap(struct ieee80211_sub_if_data *sdata, |
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struct ieee80211_supported_band *sband, |
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const struct ieee80211_ht_cap *ht_cap_ie, |
|
struct sta_info *sta) |
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{ |
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struct ieee80211_sta_ht_cap ht_cap, own_cap; |
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u8 ampdu_info, tx_mcs_set_cap; |
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int i, max_tx_streams; |
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bool changed; |
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enum ieee80211_sta_rx_bandwidth bw; |
|
|
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memset(&ht_cap, 0, sizeof(ht_cap)); |
|
|
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if (!ht_cap_ie || !sband->ht_cap.ht_supported) |
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goto apply; |
|
|
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ht_cap.ht_supported = true; |
|
|
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own_cap = sband->ht_cap; |
|
|
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/* |
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* If user has specified capability over-rides, take care |
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* of that if the station we're setting up is the AP or TDLS peer that |
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* we advertised a restricted capability set to. Override |
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* our own capabilities and then use those below. |
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*/ |
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if (sdata->vif.type == NL80211_IFTYPE_STATION || |
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sdata->vif.type == NL80211_IFTYPE_ADHOC) |
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ieee80211_apply_htcap_overrides(sdata, &own_cap); |
|
|
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/* |
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* The bits listed in this expression should be |
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* the same for the peer and us, if the station |
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* advertises more then we can't use those thus |
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* we mask them out. |
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*/ |
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ht_cap.cap = le16_to_cpu(ht_cap_ie->cap_info) & |
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(own_cap.cap | ~(IEEE80211_HT_CAP_LDPC_CODING | |
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IEEE80211_HT_CAP_SUP_WIDTH_20_40 | |
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IEEE80211_HT_CAP_GRN_FLD | |
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IEEE80211_HT_CAP_SGI_20 | |
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IEEE80211_HT_CAP_SGI_40 | |
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IEEE80211_HT_CAP_DSSSCCK40)); |
|
|
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/* |
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* The STBC bits are asymmetric -- if we don't have |
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* TX then mask out the peer's RX and vice versa. |
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*/ |
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if (!(own_cap.cap & IEEE80211_HT_CAP_TX_STBC)) |
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ht_cap.cap &= ~IEEE80211_HT_CAP_RX_STBC; |
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if (!(own_cap.cap & IEEE80211_HT_CAP_RX_STBC)) |
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ht_cap.cap &= ~IEEE80211_HT_CAP_TX_STBC; |
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|
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ampdu_info = ht_cap_ie->ampdu_params_info; |
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ht_cap.ampdu_factor = |
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ampdu_info & IEEE80211_HT_AMPDU_PARM_FACTOR; |
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ht_cap.ampdu_density = |
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(ampdu_info & IEEE80211_HT_AMPDU_PARM_DENSITY) >> 2; |
|
|
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/* own MCS TX capabilities */ |
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tx_mcs_set_cap = own_cap.mcs.tx_params; |
|
|
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/* Copy peer MCS TX capabilities, the driver might need them. */ |
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ht_cap.mcs.tx_params = ht_cap_ie->mcs.tx_params; |
|
|
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/* can we TX with MCS rates? */ |
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if (!(tx_mcs_set_cap & IEEE80211_HT_MCS_TX_DEFINED)) |
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goto apply; |
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|
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/* Counting from 0, therefore +1 */ |
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if (tx_mcs_set_cap & IEEE80211_HT_MCS_TX_RX_DIFF) |
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max_tx_streams = |
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((tx_mcs_set_cap & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) |
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>> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1; |
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else |
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max_tx_streams = IEEE80211_HT_MCS_TX_MAX_STREAMS; |
|
|
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/* |
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* 802.11n-2009 20.3.5 / 20.6 says: |
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* - indices 0 to 7 and 32 are single spatial stream |
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* - 8 to 31 are multiple spatial streams using equal modulation |
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* [8..15 for two streams, 16..23 for three and 24..31 for four] |
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* - remainder are multiple spatial streams using unequal modulation |
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*/ |
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for (i = 0; i < max_tx_streams; i++) |
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ht_cap.mcs.rx_mask[i] = |
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own_cap.mcs.rx_mask[i] & ht_cap_ie->mcs.rx_mask[i]; |
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|
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if (tx_mcs_set_cap & IEEE80211_HT_MCS_TX_UNEQUAL_MODULATION) |
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for (i = IEEE80211_HT_MCS_UNEQUAL_MODULATION_START_BYTE; |
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i < IEEE80211_HT_MCS_MASK_LEN; i++) |
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ht_cap.mcs.rx_mask[i] = |
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own_cap.mcs.rx_mask[i] & |
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ht_cap_ie->mcs.rx_mask[i]; |
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|
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/* handle MCS rate 32 too */ |
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if (own_cap.mcs.rx_mask[32/8] & ht_cap_ie->mcs.rx_mask[32/8] & 1) |
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ht_cap.mcs.rx_mask[32/8] |= 1; |
|
|
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/* set Rx highest rate */ |
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ht_cap.mcs.rx_highest = ht_cap_ie->mcs.rx_highest; |
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|
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if (ht_cap.cap & IEEE80211_HT_CAP_MAX_AMSDU) |
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sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_7935; |
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else |
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sta->sta.max_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_3839; |
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|
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apply: |
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changed = memcmp(&sta->sta.ht_cap, &ht_cap, sizeof(ht_cap)); |
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|
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memcpy(&sta->sta.ht_cap, &ht_cap, sizeof(ht_cap)); |
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|
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switch (sdata->vif.bss_conf.chandef.width) { |
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default: |
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WARN_ON_ONCE(1); |
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fallthrough; |
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case NL80211_CHAN_WIDTH_20_NOHT: |
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case NL80211_CHAN_WIDTH_20: |
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bw = IEEE80211_STA_RX_BW_20; |
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break; |
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case NL80211_CHAN_WIDTH_40: |
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case NL80211_CHAN_WIDTH_80: |
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case NL80211_CHAN_WIDTH_80P80: |
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case NL80211_CHAN_WIDTH_160: |
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bw = ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ? |
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IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20; |
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break; |
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} |
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|
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sta->sta.bandwidth = bw; |
|
|
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sta->cur_max_bandwidth = |
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ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40 ? |
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IEEE80211_STA_RX_BW_40 : IEEE80211_STA_RX_BW_20; |
|
|
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if (sta->sdata->vif.type == NL80211_IFTYPE_AP || |
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sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) { |
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enum ieee80211_smps_mode smps_mode; |
|
|
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switch ((ht_cap.cap & IEEE80211_HT_CAP_SM_PS) |
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>> IEEE80211_HT_CAP_SM_PS_SHIFT) { |
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case WLAN_HT_CAP_SM_PS_INVALID: |
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case WLAN_HT_CAP_SM_PS_STATIC: |
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smps_mode = IEEE80211_SMPS_STATIC; |
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break; |
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case WLAN_HT_CAP_SM_PS_DYNAMIC: |
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smps_mode = IEEE80211_SMPS_DYNAMIC; |
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break; |
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case WLAN_HT_CAP_SM_PS_DISABLED: |
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smps_mode = IEEE80211_SMPS_OFF; |
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break; |
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} |
|
|
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if (smps_mode != sta->sta.smps_mode) |
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changed = true; |
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sta->sta.smps_mode = smps_mode; |
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} else { |
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sta->sta.smps_mode = IEEE80211_SMPS_OFF; |
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} |
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return changed; |
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} |
|
|
|
void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta, |
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enum ieee80211_agg_stop_reason reason) |
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{ |
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int i; |
|
|
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mutex_lock(&sta->ampdu_mlme.mtx); |
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for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
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___ieee80211_stop_rx_ba_session(sta, i, WLAN_BACK_RECIPIENT, |
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WLAN_REASON_QSTA_LEAVE_QBSS, |
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reason != AGG_STOP_DESTROY_STA && |
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reason != AGG_STOP_PEER_REQUEST); |
|
|
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for (i = 0; i < IEEE80211_NUM_TIDS; i++) |
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___ieee80211_stop_tx_ba_session(sta, i, reason); |
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mutex_unlock(&sta->ampdu_mlme.mtx); |
|
|
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/* |
|
* In case the tear down is part of a reconfigure due to HW restart |
|
* request, it is possible that the low level driver requested to stop |
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* the BA session, so handle it to properly clean tid_tx data. |
|
*/ |
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if(reason == AGG_STOP_DESTROY_STA) { |
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cancel_work_sync(&sta->ampdu_mlme.work); |
|
|
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mutex_lock(&sta->ampdu_mlme.mtx); |
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for (i = 0; i < IEEE80211_NUM_TIDS; i++) { |
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struct tid_ampdu_tx *tid_tx = |
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rcu_dereference_protected_tid_tx(sta, i); |
|
|
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if (!tid_tx) |
|
continue; |
|
|
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if (test_and_clear_bit(HT_AGG_STATE_STOP_CB, &tid_tx->state)) |
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ieee80211_stop_tx_ba_cb(sta, i, tid_tx); |
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} |
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mutex_unlock(&sta->ampdu_mlme.mtx); |
|
} |
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} |
|
|
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void ieee80211_ba_session_work(struct work_struct *work) |
|
{ |
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struct sta_info *sta = |
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container_of(work, struct sta_info, ampdu_mlme.work); |
|
struct tid_ampdu_tx *tid_tx; |
|
bool blocked; |
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int tid; |
|
|
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/* When this flag is set, new sessions should be blocked. */ |
|
blocked = test_sta_flag(sta, WLAN_STA_BLOCK_BA); |
|
|
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mutex_lock(&sta->ampdu_mlme.mtx); |
|
for (tid = 0; tid < IEEE80211_NUM_TIDS; tid++) { |
|
if (test_and_clear_bit(tid, sta->ampdu_mlme.tid_rx_timer_expired)) |
|
___ieee80211_stop_rx_ba_session( |
|
sta, tid, WLAN_BACK_RECIPIENT, |
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WLAN_REASON_QSTA_TIMEOUT, true); |
|
|
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if (test_and_clear_bit(tid, |
|
sta->ampdu_mlme.tid_rx_stop_requested)) |
|
___ieee80211_stop_rx_ba_session( |
|
sta, tid, WLAN_BACK_RECIPIENT, |
|
WLAN_REASON_UNSPECIFIED, true); |
|
|
|
if (!blocked && |
|
test_and_clear_bit(tid, |
|
sta->ampdu_mlme.tid_rx_manage_offl)) |
|
___ieee80211_start_rx_ba_session(sta, 0, 0, 0, 1, tid, |
|
IEEE80211_MAX_AMPDU_BUF_HT, |
|
false, true, NULL); |
|
|
|
if (test_and_clear_bit(tid + IEEE80211_NUM_TIDS, |
|
sta->ampdu_mlme.tid_rx_manage_offl)) |
|
___ieee80211_stop_rx_ba_session( |
|
sta, tid, WLAN_BACK_RECIPIENT, |
|
0, false); |
|
|
|
spin_lock_bh(&sta->lock); |
|
|
|
tid_tx = sta->ampdu_mlme.tid_start_tx[tid]; |
|
if (!blocked && tid_tx) { |
|
/* |
|
* Assign it over to the normal tid_tx array |
|
* where it "goes live". |
|
*/ |
|
|
|
sta->ampdu_mlme.tid_start_tx[tid] = NULL; |
|
/* could there be a race? */ |
|
if (sta->ampdu_mlme.tid_tx[tid]) |
|
kfree(tid_tx); |
|
else |
|
ieee80211_assign_tid_tx(sta, tid, tid_tx); |
|
spin_unlock_bh(&sta->lock); |
|
|
|
ieee80211_tx_ba_session_handle_start(sta, tid); |
|
continue; |
|
} |
|
spin_unlock_bh(&sta->lock); |
|
|
|
tid_tx = rcu_dereference_protected_tid_tx(sta, tid); |
|
if (!tid_tx) |
|
continue; |
|
|
|
if (!blocked && |
|
test_and_clear_bit(HT_AGG_STATE_START_CB, &tid_tx->state)) |
|
ieee80211_start_tx_ba_cb(sta, tid, tid_tx); |
|
if (test_and_clear_bit(HT_AGG_STATE_WANT_STOP, &tid_tx->state)) |
|
___ieee80211_stop_tx_ba_session(sta, tid, |
|
AGG_STOP_LOCAL_REQUEST); |
|
if (test_and_clear_bit(HT_AGG_STATE_STOP_CB, &tid_tx->state)) |
|
ieee80211_stop_tx_ba_cb(sta, tid, tid_tx); |
|
} |
|
mutex_unlock(&sta->ampdu_mlme.mtx); |
|
} |
|
|
|
void ieee80211_send_delba(struct ieee80211_sub_if_data *sdata, |
|
const u8 *da, u16 tid, |
|
u16 initiator, u16 reason_code) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct sk_buff *skb; |
|
struct ieee80211_mgmt *mgmt; |
|
u16 params; |
|
|
|
skb = dev_alloc_skb(sizeof(*mgmt) + local->hw.extra_tx_headroom); |
|
if (!skb) |
|
return; |
|
|
|
skb_reserve(skb, local->hw.extra_tx_headroom); |
|
mgmt = skb_put_zero(skb, 24); |
|
memcpy(mgmt->da, da, ETH_ALEN); |
|
memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
|
if (sdata->vif.type == NL80211_IFTYPE_AP || |
|
sdata->vif.type == NL80211_IFTYPE_AP_VLAN || |
|
sdata->vif.type == NL80211_IFTYPE_MESH_POINT) |
|
memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
|
else if (sdata->vif.type == NL80211_IFTYPE_STATION) |
|
memcpy(mgmt->bssid, sdata->u.mgd.bssid, ETH_ALEN); |
|
else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) |
|
memcpy(mgmt->bssid, sdata->u.ibss.bssid, ETH_ALEN); |
|
|
|
mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
|
IEEE80211_STYPE_ACTION); |
|
|
|
skb_put(skb, 1 + sizeof(mgmt->u.action.u.delba)); |
|
|
|
mgmt->u.action.category = WLAN_CATEGORY_BACK; |
|
mgmt->u.action.u.delba.action_code = WLAN_ACTION_DELBA; |
|
params = (u16)(initiator << 11); /* bit 11 initiator */ |
|
params |= (u16)(tid << 12); /* bit 15:12 TID number */ |
|
|
|
mgmt->u.action.u.delba.params = cpu_to_le16(params); |
|
mgmt->u.action.u.delba.reason_code = cpu_to_le16(reason_code); |
|
|
|
ieee80211_tx_skb(sdata, skb); |
|
} |
|
|
|
void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata, |
|
struct sta_info *sta, |
|
struct ieee80211_mgmt *mgmt, size_t len) |
|
{ |
|
u16 tid, params; |
|
u16 initiator; |
|
|
|
params = le16_to_cpu(mgmt->u.action.u.delba.params); |
|
tid = (params & IEEE80211_DELBA_PARAM_TID_MASK) >> 12; |
|
initiator = (params & IEEE80211_DELBA_PARAM_INITIATOR_MASK) >> 11; |
|
|
|
ht_dbg_ratelimited(sdata, "delba from %pM (%s) tid %d reason code %d\n", |
|
mgmt->sa, initiator ? "initiator" : "recipient", |
|
tid, |
|
le16_to_cpu(mgmt->u.action.u.delba.reason_code)); |
|
|
|
if (initiator == WLAN_BACK_INITIATOR) |
|
__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_INITIATOR, 0, |
|
true); |
|
else |
|
__ieee80211_stop_tx_ba_session(sta, tid, AGG_STOP_PEER_REQUEST); |
|
} |
|
|
|
enum nl80211_smps_mode |
|
ieee80211_smps_mode_to_smps_mode(enum ieee80211_smps_mode smps) |
|
{ |
|
switch (smps) { |
|
case IEEE80211_SMPS_OFF: |
|
return NL80211_SMPS_OFF; |
|
case IEEE80211_SMPS_STATIC: |
|
return NL80211_SMPS_STATIC; |
|
case IEEE80211_SMPS_DYNAMIC: |
|
return NL80211_SMPS_DYNAMIC; |
|
default: |
|
return NL80211_SMPS_OFF; |
|
} |
|
} |
|
|
|
int ieee80211_send_smps_action(struct ieee80211_sub_if_data *sdata, |
|
enum ieee80211_smps_mode smps, const u8 *da, |
|
const u8 *bssid) |
|
{ |
|
struct ieee80211_local *local = sdata->local; |
|
struct sk_buff *skb; |
|
struct ieee80211_mgmt *action_frame; |
|
|
|
/* 27 = header + category + action + smps mode */ |
|
skb = dev_alloc_skb(27 + local->hw.extra_tx_headroom); |
|
if (!skb) |
|
return -ENOMEM; |
|
|
|
skb_reserve(skb, local->hw.extra_tx_headroom); |
|
action_frame = skb_put(skb, 27); |
|
memcpy(action_frame->da, da, ETH_ALEN); |
|
memcpy(action_frame->sa, sdata->dev->dev_addr, ETH_ALEN); |
|
memcpy(action_frame->bssid, bssid, ETH_ALEN); |
|
action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
|
IEEE80211_STYPE_ACTION); |
|
action_frame->u.action.category = WLAN_CATEGORY_HT; |
|
action_frame->u.action.u.ht_smps.action = WLAN_HT_ACTION_SMPS; |
|
switch (smps) { |
|
case IEEE80211_SMPS_AUTOMATIC: |
|
case IEEE80211_SMPS_NUM_MODES: |
|
WARN_ON(1); |
|
fallthrough; |
|
case IEEE80211_SMPS_OFF: |
|
action_frame->u.action.u.ht_smps.smps_control = |
|
WLAN_HT_SMPS_CONTROL_DISABLED; |
|
break; |
|
case IEEE80211_SMPS_STATIC: |
|
action_frame->u.action.u.ht_smps.smps_control = |
|
WLAN_HT_SMPS_CONTROL_STATIC; |
|
break; |
|
case IEEE80211_SMPS_DYNAMIC: |
|
action_frame->u.action.u.ht_smps.smps_control = |
|
WLAN_HT_SMPS_CONTROL_DYNAMIC; |
|
break; |
|
} |
|
|
|
/* we'll do more on status of this frame */ |
|
IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS; |
|
ieee80211_tx_skb(sdata, skb); |
|
|
|
return 0; |
|
} |
|
|
|
void ieee80211_request_smps_mgd_work(struct work_struct *work) |
|
{ |
|
struct ieee80211_sub_if_data *sdata = |
|
container_of(work, struct ieee80211_sub_if_data, |
|
u.mgd.request_smps_work); |
|
|
|
sdata_lock(sdata); |
|
__ieee80211_request_smps_mgd(sdata, sdata->u.mgd.driver_smps_mode); |
|
sdata_unlock(sdata); |
|
} |
|
|
|
void ieee80211_request_smps(struct ieee80211_vif *vif, |
|
enum ieee80211_smps_mode smps_mode) |
|
{ |
|
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); |
|
|
|
if (WARN_ON_ONCE(vif->type != NL80211_IFTYPE_STATION)) |
|
return; |
|
|
|
if (sdata->u.mgd.driver_smps_mode == smps_mode) |
|
return; |
|
|
|
sdata->u.mgd.driver_smps_mode = smps_mode; |
|
ieee80211_queue_work(&sdata->local->hw, |
|
&sdata->u.mgd.request_smps_work); |
|
} |
|
/* this might change ... don't want non-open drivers using it */ |
|
EXPORT_SYMBOL_GPL(ieee80211_request_smps);
|
|
|