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Commit bf0c111e authored by Mahesh Palivela's avatar Mahesh Palivela Committed by Johannes Berg
Browse files

cfg80211: allow advertising VHT capabilities 



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

Signed-off-by: default avatarMahesh Palivela <maheshp@posedge.com>
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent ce0e1695

include/linux/nl80211.h

+6 −0
Original line number Diff line number Diff line
@@ -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

include/net/cfg80211.h

+17 −0
Original line number Diff line number Diff line
@@ -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;

};



/*

net/wireless/nl80211.c

+9 −0
Original line number Diff line number Diff line
@@ -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)