nl80211: Add BSS parameters to station

This allows user-space monitoring of BSS parameters for the associated
station.  This is useful for debugging and verifying that the paramaters
are as expected.

[Exactly the same as before but bundled into a single message]

Signed-off-by: Paul Stewart <pstew@chromium.org>
Cc: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 2c4530451721..ba7384acf4e0 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -422,6 +422,7 @@ struct station_parameters {
  * @STATION_INFO_RX_DROP_MISC: @rx_dropped_misc filled
  * @STATION_INFO_SIGNAL_AVG: @signal_avg filled
  * @STATION_INFO_RX_BITRATE: @rxrate fields are filled
+ * @STATION_INFO_BSS_PARAM: @bss_param filled
  */
 enum station_info_flags {
         STATION_INFO_INACTIVE_TIME      = 1<<0,
@@ -439,6 +440,7 @@ enum station_info_flags {
         STATION_INFO_RX_DROP_MISC       = 1<<12,
         STATION_INFO_SIGNAL_AVG         = 1<<13,
         STATION_INFO_RX_BITRATE         = 1<<14,
+        STATION_INFO_BSS_PARAM          = 1<<15,
 };
 
 /**
@@ -473,6 +475,37 @@ struct rate_info {
 };
 
 /**
+ * enum station_info_rate_flags - bitrate info flags
+ *
+ * Used by the driver to indicate the specific rate transmission
+ * type for 802.11n transmissions.
+ *
+ * @BSS_PARAM_FLAGS_CTS_PROT: whether CTS protection is enabled
+ * @BSS_PARAM_FLAGS_SHORT_PREAMBLE: whether short preamble is enabled
+ * @BSS_PARAM_FLAGS_SHORT_SLOT_TIME: whether short slot time is enabled
+ */
+enum bss_param_flags {
+        BSS_PARAM_FLAGS_CTS_PROT        = 1<<0,
+        BSS_PARAM_FLAGS_SHORT_PREAMBLE  = 1<<1,
+        BSS_PARAM_FLAGS_SHORT_SLOT_TIME = 1<<2,
+};
+
+/**
+ * struct sta_bss_parameters - BSS parameters for the attached station
+ *
+ * Information about the currently associated BSS
+ *
+ * @flags: bitflag of flags from &enum bss_param_flags
+ * @dtim_period: DTIM period for the BSS
+ * @beacon_interval: beacon interval
+ */
+struct sta_bss_parameters {
+        u8 flags;
+        u8 dtim_period;
+        u16 beacon_interval;
+};
+
+/**
  * struct station_info - station information
  *
  * Station information filled by driver for get_station() and dump_station.
@@ -515,6 +548,7 @@ struct station_info {
         u32 tx_retries;
         u32 tx_failed;
         u32 rx_dropped_misc;
+        struct sta_bss_parameters bss_param;
 
         int generation;
 };