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cfg80211: allow advertising VHT capabilities

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Allow drivers to advertise their VHT capabilities
and export them to userspace via nl80211.

Signed-off-by: Mahesh Palivela <maheshp@posedge.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Mahesh Palivela 2012-06-22 07:27:46 +00:00 committed by Johannes Berg
parent ce0e169529
commit bf0c111ec8
3 changed files with 32 additions and 0 deletions
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6
include/linux/nl80211.h
View file

@ -1813,6 +1813,9 @@ enum nl80211_mpath_info {
* @NL80211_BAND_ATTR_HT_CAPA: HT capabilities, as in the HT information IE
* @NL80211_BAND_ATTR_HT_AMPDU_FACTOR: A-MPDU factor, as in 11n
* @NL80211_BAND_ATTR_HT_AMPDU_DENSITY: A-MPDU density, as in 11n
* @NL80211_BAND_ATTR_VHT_MCS_SET: 32-byte attribute containing the MCS set as
* defined in 802.11ac
* @NL80211_BAND_ATTR_VHT_CAPA: VHT capabilities, as in the HT information IE
* @NL80211_BAND_ATTR_MAX: highest band attribute currently defined
* @__NL80211_BAND_ATTR_AFTER_LAST: internal use
*/
@ -1826,6 +1829,9 @@ enum nl80211_band_attr {
NL80211_BAND_ATTR_HT_AMPDU_FACTOR,
NL80211_BAND_ATTR_HT_AMPDU_DENSITY,
NL80211_BAND_ATTR_VHT_MCS_SET,
NL80211_BAND_ATTR_VHT_CAPA,
/* keep last */
__NL80211_BAND_ATTR_AFTER_LAST,
NL80211_BAND_ATTR_MAX = __NL80211_BAND_ATTR_AFTER_LAST - 1

17
include/net/cfg80211.h
View file

@ -210,6 +210,22 @@ struct ieee80211_sta_ht_cap {
struct ieee80211_mcs_info mcs;
};
/**
* struct ieee80211_sta_vht_cap - STA's VHT capabilities
*
* This structure describes most essential parameters needed
* to describe 802.11ac VHT capabilities for an STA.
*
* @vht_supported: is VHT supported by the STA
* @cap: VHT capabilities map as described in 802.11ac spec
* @vht_mcs: Supported VHT MCS rates
*/
struct ieee80211_sta_vht_cap {
bool vht_supported;
u32 cap; /* use IEEE80211_VHT_CAP_ */
struct ieee80211_vht_mcs_info vht_mcs;
};
/**
* struct ieee80211_supported_band - frequency band definition
*
@ -233,6 +249,7 @@ struct ieee80211_supported_band {
int n_channels;
int n_bitrates;
struct ieee80211_sta_ht_cap ht_cap;
struct ieee80211_sta_vht_cap vht_cap;
};
/*

9
net/wireless/nl80211.c
View file

@ -921,6 +921,15 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
dev->wiphy.bands[band]->ht_cap.ampdu_density)))
goto nla_put_failure;
/* add VHT info */
if (dev->wiphy.bands[band]->vht_cap.vht_supported &&
(nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET,
sizeof(dev->wiphy.bands[band]->vht_cap.vht_mcs),
&dev->wiphy.bands[band]->vht_cap.vht_mcs) ||
nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA,
dev->wiphy.bands[band]->vht_cap.cap)))
goto nla_put_failure;
/* add frequencies */
nl_freqs = nla_nest_start(msg, NL80211_BAND_ATTR_FREQS);
if (!nl_freqs)