svn commit: r297048 - head/sys/net80211

[Adrian Chadd]

Author: adrian
Date: Sat Mar 19 04:37:33 2016
New Revision: 297048
URL: https://svnweb.freebsd.org/changeset/base/297048

Log:
  [net80211] Add VHT Transmit Power Envelope element - 802.11ac-2013 8.4.2.164
  
  This .. seems inconsistently transmitted from various vendors.

Modified:
  head/sys/net80211/ieee80211.h

Modified: head/sys/net80211/ieee80211.h
==============================================================================
--- head/sys/net80211/ieee80211.h	Fri Mar 18 23:55:25 2016	(r297047)
+++ head/sys/net80211/ieee80211.h	Sat Mar 19 04:37:33 2016	(r297048)
@@ -803,6 +803,39 @@ struct ieee80211_ie_vht_operation {
 #define	IEEE80211_VHTCAP_RX_ANTENNA_PATTERN	0x10000000
 #define	IEEE80211_VHTCAP_TX_ANTENNA_PATTERN	0x20000000
 
+/*
+ * VHT Transmit Power Envelope element - 802.11ac-2013 8.4.2.164
+ *
+ * This defines the maximum transmit power for various bandwidths.
+ */
+/*
+ * Count is how many elements follow and what they're for:
+ *
+ * 0 - 20 MHz
+ * 1 - 20+40 MHz
+ * 2 - 20+40+80 MHz
+ * 3 - 20+40+80+(160, 80+80) MHz
+ */
+#define	IEEE80211_VHT_TXPWRENV_INFO_COUNT_SHIFT	0
+#define	IEEE80211_VHT_TXPWRENV_INFO_COUNT_MASK	0x07
+
+/*
+ * Unit is the tx power representation.  It should be EIRP for now;
+ * other values are reserved.
+ */
+#define	IEEE80211_VHT_TXPWRENV_UNIT_MASK	0x38
+#define	IEEE80211_VHT_TXPWRENV_UNIT_SHIFT	3
+
+/* This value is within the unit mask/shift above */
+#define	IEEE80211_VHT_TXPWRENV_UNIT_EIRP	0
+
+struct ieee80211_ie_vht_txpwrenv {
+	uint8_t ie;
+	uint8_t len;
+	uint8_t tx_info;
+	int8_t tx_elem[0];	/* TX power elements, 1/2 dB, signed */
+};
+
 /* VHT action codes */
 #define	WLAN_ACTION_VHT_COMPRESSED_BF		0
 #define	WLAN_ACTION_VHT_GROUPID_MGMT		1