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mac80211: enable TDLS peer buffer STA feature

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

Signed-off-by: Yingying Tang <yintang@qti.qualcomm.com>
[change commit log/documentation wording]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Yingying Tang 2017-10-24 16:51:10 +08:00 committed by Johannes Berg
parent d559e303b1
commit e2fb1b8392
3 changed files with 9 additions and 1 deletions
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4
include/net/mac80211.h
View file

@ -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

1
net/mac80211/debugfs.c
View file

@ -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
};

5
net/mac80211/tdls.c
View file

@ -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;