mac80211: support VHT rates in TX info
To achieve this, limit the number of retries to
31 (instead of 255) and use the three bits that
are then free for VHT flags.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 598ea21..db7680a 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -499,9 +499,14 @@
* This is set if the current BSS requires ERP protection.
* @IEEE80211_TX_RC_USE_SHORT_PREAMBLE: Use short preamble.
* @IEEE80211_TX_RC_MCS: HT rate.
+ * @IEEE80211_TX_RC_VHT_MCS: VHT MCS rate, in this case the idx field is split
+ * into a higher 4 bits (Nss) and lower 4 bits (MCS number)
* @IEEE80211_TX_RC_GREEN_FIELD: Indicates whether this rate should be used in
* Greenfield mode.
* @IEEE80211_TX_RC_40_MHZ_WIDTH: Indicates if the Channel Width should be 40 MHz.
+ * @IEEE80211_TX_RC_80_MHZ_WIDTH: Indicates 80 MHz transmission
+ * @IEEE80211_TX_RC_160_MHZ_WIDTH: Indicates 160 MHz transmission
+ * (80+80 isn't supported yet)
* @IEEE80211_TX_RC_DUP_DATA: The frame should be transmitted on both of the
* adjacent 20 MHz channels, if the current channel type is
* NL80211_CHAN_HT40MINUS or NL80211_CHAN_HT40PLUS.
@@ -512,12 +517,15 @@
IEEE80211_TX_RC_USE_CTS_PROTECT = BIT(1),
IEEE80211_TX_RC_USE_SHORT_PREAMBLE = BIT(2),
- /* rate index is an MCS rate number instead of an index */
+ /* rate index is an HT/VHT MCS instead of an index */
IEEE80211_TX_RC_MCS = BIT(3),
IEEE80211_TX_RC_GREEN_FIELD = BIT(4),
IEEE80211_TX_RC_40_MHZ_WIDTH = BIT(5),
IEEE80211_TX_RC_DUP_DATA = BIT(6),
IEEE80211_TX_RC_SHORT_GI = BIT(7),
+ IEEE80211_TX_RC_VHT_MCS = BIT(8),
+ IEEE80211_TX_RC_80_MHZ_WIDTH = BIT(9),
+ IEEE80211_TX_RC_160_MHZ_WIDTH = BIT(10),
};
@@ -560,10 +568,32 @@
*/
struct ieee80211_tx_rate {
s8 idx;
- u8 count;
- u8 flags;
+ u16 count:5,
+ flags:11;
} __packed;
+#define IEEE80211_MAX_TX_RETRY 31
+
+static inline void ieee80211_rate_set_vht(struct ieee80211_tx_rate *rate,
+ u8 mcs, u8 nss)
+{
+ WARN_ON(mcs & ~0xF);
+ WARN_ON(nss & ~0x7);
+ rate->idx = (nss << 4) | mcs;
+}
+
+static inline u8
+ieee80211_rate_get_vht_mcs(const struct ieee80211_tx_rate *rate)
+{
+ return rate->idx & 0xF;
+}
+
+static inline u8
+ieee80211_rate_get_vht_nss(const struct ieee80211_tx_rate *rate)
+{
+ return rate->idx >> 4;
+}
+
/**
* struct ieee80211_tx_info - skb transmit information
*