From e2fb1b839208ad776c0ffbb55f17e6968389ce02 Mon Sep 17 00:00:00 2001 From: Yingying Tang Date: Tue, 24 Oct 2017 16:51:10 +0800 Subject: [PATCH] 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 [change commit log/documentation wording] Signed-off-by: Johannes Berg --- include/net/mac80211.h | 4 ++++ net/mac80211/debugfs.c | 1 + net/mac80211/tdls.c | 5 ++++- 3 files changed, 9 insertions(+), 1 deletion(-) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index eec143cca1c0..2ee4af25256d 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -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 diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c index 5fae001f286c..1f466d12a6bc 100644 --- a/net/mac80211/debugfs.c +++ b/net/mac80211/debugfs.c @@ -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 }; diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c index 96d4fb998e33..5cd5e6e5834e 100644 --- a/net/mac80211/tdls.c +++ b/net/mac80211/tdls.c @@ -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; -- 2.30.2