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: Yingying Tang <yintang@qti.qualcomm.com> [change commit log/documentation wording] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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@ -2056,6 +2056,9 @@ struct ieee80211_txq {
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* The stack will not do fragmentation.
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* The callback for @set_frag_threshold should be set as well.
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*
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* @IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA: Hardware supports buffer STA on
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* TDLS links.
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*
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* @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays
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*/
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enum ieee80211_hw_flags {
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@ -2098,6 +2101,7 @@ enum ieee80211_hw_flags {
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IEEE80211_HW_TX_FRAG_LIST,
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IEEE80211_HW_REPORTS_LOW_ACK,
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IEEE80211_HW_SUPPORTS_TX_FRAG,
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IEEE80211_HW_SUPPORTS_TDLS_BUFFER_STA,
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/* keep last, obviously */
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NUM_IEEE80211_HW_FLAGS
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@ -211,6 +211,7 @@ static const char *hw_flag_names[] = {
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FLAG(TX_FRAG_LIST),
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FLAG(REPORTS_LOW_ACK),
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FLAG(SUPPORTS_TX_FRAG),
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FLAG(SUPPORTS_TDLS_BUFFER_STA),
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#undef FLAG
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};
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@ -47,6 +47,8 @@ static void ieee80211_tdls_add_ext_capab(struct ieee80211_sub_if_data *sdata,
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NL80211_FEATURE_TDLS_CHANNEL_SWITCH;
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bool wider_band = ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
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!ifmgd->tdls_wider_bw_prohibited;
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bool buffer_sta = ieee80211_hw_check(&local->hw,
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SUPPORTS_TDLS_BUFFER_STA);
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struct ieee80211_supported_band *sband = ieee80211_get_sband(sdata);
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bool vht = sband && sband->vht_cap.vht_supported;
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u8 *pos = skb_put(skb, 10);
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@ -56,7 +58,8 @@ static void ieee80211_tdls_add_ext_capab(struct ieee80211_sub_if_data *sdata,
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*pos++ = 0x0;
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*pos++ = 0x0;
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*pos++ = 0x0;
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*pos++ = chan_switch ? WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH : 0;
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*pos++ = (chan_switch ? WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH : 0) |
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(buffer_sta ? WLAN_EXT_CAPA4_TDLS_BUFFER_STA : 0);
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*pos++ = WLAN_EXT_CAPA5_TDLS_ENABLED;
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*pos++ = 0;
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*pos++ = 0;
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