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Commit e2fb1b83 authored by Yingying Tang's avatar Yingying Tang Committed by Johannes Berg
Browse files

mac80211: enable TDLS peer buffer STA feature 



Allow drivers to set the buffer station extended capability
for TDLS links, with a new hardware flag indicating this.

Signed-off-by: default avatarYingying Tang <yintang@qti.qualcomm.com>
[change commit log/documentation wording]
Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent d559e303

include/net/mac80211.h

+4 −0
Original line number Diff line number Diff line
@@ -2056,6 +2056,9 @@ struct ieee80211_txq { 
 *	The stack will not do fragmentation.

 *	The callback for @set_frag_threshold should be set as well.

 *

 * @IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA: Hardware supports buffer STA on

 *	TDLS links.

 *

 * @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays

 */

enum ieee80211_hw_flags {
@@ -2098,6 +2101,7 @@ enum ieee80211_hw_flags { 
	IEEE80211_HW_TX_FRAG_LIST,

	IEEE80211_HW_REPORTS_LOW_ACK,

	IEEE80211_HW_SUPPORTS_TX_FRAG,

	IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA,



	/* keep last, obviously */

	NUM_IEEE80211_HW_FLAGS

net/mac80211/debugfs.c

+1 −0
Original line number Diff line number Diff line
@@ -211,6 +211,7 @@ static const char *hw_flag_names[] = { 
	FLAG(TX_FRAG_LIST),

	FLAG(REPORTS_LOW_ACK),

	FLAG(SUPPORTS_TX_FRAG),

	FLAG(SUPPORTS_TDLS_BUFFER_STA),

#undef FLAG

};

net/mac80211/tdls.c

+4 −1
Original line number Diff line number Diff line
@@ -47,6 +47,8 @@ static void ieee80211_tdls_add_ext_capab(struct ieee80211_sub_if_data *sdata, 
			   NL80211_FEATURE_TDLS_CHANNEL_SWITCH;

	bool wider_band = ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&

			  !ifmgd->tdls_wider_bw_prohibited;

	bool buffer_sta = ieee80211_hw_check(&local->hw,

					     SUPPORTS_TDLS_BUFFER_STA);

	struct ieee80211_supported_band *sband = ieee80211_get_sband(sdata);

	bool vht = sband && sband->vht_cap.vht_supported;

	u8 *pos = skb_put(skb, 10);
@@ -56,7 +58,8 @@ static void ieee80211_tdls_add_ext_capab(struct ieee80211_sub_if_data *sdata, 
	*pos++ = 0x0;

	*pos++ = 0x0;

	*pos++ = 0x0;

	*pos++ = chan_switch ? WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH : 0;

	*pos++ = (chan_switch ? WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH : 0) |

		 (buffer_sta ? WLAN_EXT_CAPA4_TDLS_BUFFER_STA : 0);

	*pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;

	*pos++ = 0;

	*pos++ = 0;