4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
9 #include <linux/ieee80211.h>
10 #include <linux/export.h>
11 #include <net/mac80211.h>
12 #include "ieee80211_i.h"
15 void ieee80211_vht_cap_ie_to_sta_vht_cap(struct ieee80211_sub_if_data
*sdata
,
16 struct ieee80211_supported_band
*sband
,
17 struct ieee80211_vht_cap
*vht_cap_ie
,
20 struct ieee80211_sta_vht_cap
*vht_cap
= &sta
->sta
.vht_cap
;
22 memset(vht_cap
, 0, sizeof(*vht_cap
));
24 if (!sta
->sta
.ht_cap
.ht_supported
)
27 if (!vht_cap_ie
|| !sband
->vht_cap
.vht_supported
)
30 /* A VHT STA must support 40 MHz */
31 if (!(sta
->sta
.ht_cap
.cap
& IEEE80211_HT_CAP_SUP_WIDTH_20_40
))
34 vht_cap
->vht_supported
= true;
36 vht_cap
->cap
= le32_to_cpu(vht_cap_ie
->vht_cap_info
);
38 /* Copy peer MCS info, the driver might need them. */
39 memcpy(&vht_cap
->vht_mcs
, &vht_cap_ie
->supp_mcs
,
40 sizeof(struct ieee80211_vht_mcs_info
));
42 sta
->sta
.bandwidth
= ieee80211_sta_cur_vht_bw(sta
);
45 enum ieee80211_sta_rx_bandwidth
ieee80211_sta_cur_vht_bw(struct sta_info
*sta
)
47 struct ieee80211_sub_if_data
*sdata
= sta
->sdata
;
48 u32 cap
= sta
->sta
.vht_cap
.cap
;
50 if (!sta
->sta
.vht_cap
.vht_supported
)
51 return sta
->sta
.ht_cap
.cap
& IEEE80211_HT_CAP_SUP_WIDTH_20_40
?
52 IEEE80211_STA_RX_BW_40
: IEEE80211_STA_RX_BW_20
;
54 /* TODO: handle VHT opmode notification data */
56 switch (sdata
->vif
.bss_conf
.chandef
.width
) {
60 case NL80211_CHAN_WIDTH_20_NOHT
:
61 case NL80211_CHAN_WIDTH_20
:
62 case NL80211_CHAN_WIDTH_40
:
63 return sta
->sta
.ht_cap
.cap
& IEEE80211_HT_CAP_SUP_WIDTH_20_40
?
64 IEEE80211_STA_RX_BW_40
: IEEE80211_STA_RX_BW_20
;
65 case NL80211_CHAN_WIDTH_160
:
66 if (cap
& IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160MHZ
)
67 return IEEE80211_STA_RX_BW_160
;
69 case NL80211_CHAN_WIDTH_80P80
:
70 if (cap
& IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ
)
71 return IEEE80211_STA_RX_BW_160
;
73 case NL80211_CHAN_WIDTH_80
:
74 return IEEE80211_STA_RX_BW_80
;