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-rw-r--r--include/net/mac80211.h10
-rw-r--r--net/mac80211/main.c3
-rw-r--r--net/mac80211/rx.c6
3 files changed, 16 insertions, 3 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 60e3766d3739..1937c7d98304 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -667,6 +667,9 @@ ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info)
* @RX_FLAG_SHORT_GI: Short guard interval was used
* @RX_FLAG_NO_SIGNAL_VAL: The signal strength value is not present.
* Valid only for data frames (mainly A-MPDU)
+ * @RX_FLAG_HT_GF: This frame was received in a HT-greenfield transmission, if
+ * the driver fills this value it should add %IEEE80211_RADIOTAP_MCS_HAVE_FMT
+ * to hw.radiotap_mcs_details to advertise that fact
*/
enum mac80211_rx_flags {
RX_FLAG_MMIC_ERROR = 1<<0,
@@ -681,6 +684,7 @@ enum mac80211_rx_flags {
RX_FLAG_40MHZ = 1<<10,
RX_FLAG_SHORT_GI = 1<<11,
RX_FLAG_NO_SIGNAL_VAL = 1<<12,
+ RX_FLAG_HT_GF = 1<<13,
};
/**
@@ -1288,6 +1292,11 @@ enum ieee80211_hw_flags {
*
* @offchannel_tx_hw_queue: HW queue ID to use for offchannel TX
* (if %IEEE80211_HW_QUEUE_CONTROL is set)
+ *
+ * @radiotap_mcs_details: lists which MCS information can the HW
+ * reports, by default it is set to _MCS, _GI and _BW but doesn't
+ * include _FMT. Use %IEEE80211_RADIOTAP_MCS_HAVE_* values, only
+ * adding _BW is supported today.
*/
struct ieee80211_hw {
struct ieee80211_conf conf;
@@ -1309,6 +1318,7 @@ struct ieee80211_hw {
u8 max_rx_aggregation_subframes;
u8 max_tx_aggregation_subframes;
u8 offchannel_tx_hw_queue;
+ u8 radiotap_mcs_details;
};
/**
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index b70f7f09da61..f5548e953259 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -596,6 +596,9 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
local->hw.offchannel_tx_hw_queue = IEEE80211_INVAL_HW_QUEUE;
local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
+ local->hw.radiotap_mcs_details = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
+ IEEE80211_RADIOTAP_MCS_HAVE_GI |
+ IEEE80211_RADIOTAP_MCS_HAVE_BW;
local->user_power_level = -1;
wiphy->ht_capa_mod_mask = &mac80211_ht_capa_mod_mask;
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index d5ac02fe37ff..489093b08a4a 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -204,14 +204,14 @@ ieee80211_add_rx_radiotap_header(struct ieee80211_local *local,
if (status->flag & RX_FLAG_HT) {
rthdr->it_present |= cpu_to_le32(1 << IEEE80211_RADIOTAP_MCS);
- *pos++ = IEEE80211_RADIOTAP_MCS_HAVE_MCS |
- IEEE80211_RADIOTAP_MCS_HAVE_GI |
- IEEE80211_RADIOTAP_MCS_HAVE_BW;
+ *pos++ = local->hw.radiotap_mcs_details;
*pos = 0;
if (status->flag & RX_FLAG_SHORT_GI)
*pos |= IEEE80211_RADIOTAP_MCS_SGI;
if (status->flag & RX_FLAG_40MHZ)
*pos |= IEEE80211_RADIOTAP_MCS_BW_40;
+ if (status->flag & RX_FLAG_HT_GF)
+ *pos |= IEEE80211_RADIOTAP_MCS_FMT_GF;
pos++;
*pos++ = status->rate_idx;
}