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
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