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@xxxxxxxxxxxx>
Cc: Johannes Berg <johannes@xxxxxxxxxxxxxxxx>
---
include/linux/nl80211.h | 35 ++++++++++++++++++++++++++++++++++-
include/net/cfg80211.h | 34 ++++++++++++++++++++++++++++++++++
net/mac80211/cfg.c | 13 ++++++++++++-
net/wireless/nl80211.c | 21 ++++++++++++++++++++-
4 files changed, 100 insertions(+), 3 deletions(-)
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 3002218..16eea72 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -1222,6 +1222,36 @@ enum nl80211_rate_info {
};
/**
+ * enum nl80211_sta_bss_param - BSS information collected by STA
+ *
+ * These attribute types are used with %NL80211_STA_INFO_BSS_PARAM
+ * when getting information about the bitrate of a station.
+ *
+ * @__NL80211_STA_BSS_PARAM_INVALID: attribute number 0 is reserved
+ * @NL80211_STA_BSS_PARAM_CTS_PROT: whether CTS protection is enabled (flag)
+ * @NL80211_STA_BSS_PARAM_SHORT_PREAMBLE: whether short preamble is enabled
+ * (flag)
+ * @NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME: whether short slot time is enabled
+ * (flag)
+ * @NL80211_STA_BSS_PARAM_DTIM_PERIOD: DTIM period for beaconing (u8)
+ * @NL80211_STA_BSS_PARAM_BEACON_INTERVAL: Beacon interval (u16)
+ * @NL80211_STA_BSS_PARAM_MAX: highest sta_bss_param number currently defined
+ * @__NL80211_STA_BSS_PARAM_AFTER_LAST: internal use
+ */
+enum nl80211_sta_bss_param {
+ __NL80211_STA_BSS_PARAM_INVALID,
+ NL80211_STA_BSS_PARAM_CTS_PROT,
+ NL80211_STA_BSS_PARAM_SHORT_PREAMBLE,
+ NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME,
+ NL80211_STA_BSS_PARAM_DTIM_PERIOD,
+ NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
+
+ /* keep last */
+ __NL80211_STA_BSS_PARAM_AFTER_LAST,
+ NL80211_STA_BSS_PARAM_MAX = __NL80211_STA_BSS_PARAM_AFTER_LAST - 1
+};
+
+/**
* enum nl80211_sta_info - station information
*
* These attribute types are used with %NL80211_ATTR_STA_INFO
@@ -1233,7 +1263,7 @@ enum nl80211_rate_info {
* @NL80211_STA_INFO_TX_BYTES: total transmitted bytes (u32, to this station)
* @NL80211_STA_INFO_SIGNAL: signal strength of last received PPDU (u8, dBm)
* @NL80211_STA_INFO_TX_BITRATE: current unicast tx rate, nested attribute
- * containing info as possible, see &enum nl80211_sta_info_txrate.
+ * containing info as possible, see &enum nl80211_rate_info
* @NL80211_STA_INFO_RX_PACKETS: total received packet (u32, from this station)
* @NL80211_STA_INFO_TX_PACKETS: total transmitted packets (u32, to this
* station)
@@ -1245,6 +1275,8 @@ enum nl80211_rate_info {
* @NL80211_STA_INFO_PLINK_STATE: peer link state for the station
* @NL80211_STA_INFO_RX_BITRATE: last unicast data frame rx rate, nested
* attribute, like NL80211_STA_INFO_TX_BITRATE.
+ * @NL80211_STA_INFO_BSS_PARAM: current station's view of BSS, nested attribute
+ * containing info as possible, see &enum nl80211_sta_bss_param
* @__NL80211_STA_INFO_AFTER_LAST: internal
* @NL80211_STA_INFO_MAX: highest possible station info attribute
*/
@@ -1264,6 +1296,7 @@ enum nl80211_sta_info {
NL80211_STA_INFO_TX_FAILED,
NL80211_STA_INFO_SIGNAL_AVG,
NL80211_STA_INFO_RX_BITRATE,
+ NL80211_STA_INFO_BSS_PARAM,
/* keep last */
__NL80211_STA_INFO_AFTER_LAST,
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 2c45304..ba7384a 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;
};
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 3342135..bf5d28d 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -342,7 +342,8 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
STATION_INFO_TX_FAILED |
STATION_INFO_TX_BITRATE |
STATION_INFO_RX_BITRATE |
- STATION_INFO_RX_DROP_MISC;
+ STATION_INFO_RX_DROP_MISC |
+ STATION_INFO_BSS_PARAM;
sinfo->inactive_time = jiffies_to_msecs(jiffies - sta->last_rx);
sinfo->rx_bytes = sta->rx_bytes;
@@ -389,6 +390,16 @@ static void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
sinfo->plink_state = sta->plink_state;
#endif
}
+
+ sinfo->bss_param.flags = 0;
+ if (sdata->vif.bss_conf.use_cts_prot)
+ sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
+ if (sdata->vif.bss_conf.use_short_preamble)
+ sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
+ if (sdata->vif.bss_conf.use_short_slot)
+ sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
+ sinfo->bss_param.dtim_period = sdata->local->hw.conf.ps_dtim_period;
+ sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
}
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 40c90fb..297d7ce 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2002,7 +2002,7 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
const u8 *mac_addr, struct station_info *sinfo)
{
void *hdr;
- struct nlattr *sinfoattr;
+ struct nlattr *sinfoattr, *bss_param;
hdr = nl80211hdr_put(msg, pid, seq, flags, NL80211_CMD_NEW_STATION);
if (!hdr)
@@ -2062,6 +2062,25 @@ static int nl80211_send_station(struct sk_buff *msg, u32 pid, u32 seq,
if (sinfo->filled & STATION_INFO_TX_FAILED)
NLA_PUT_U32(msg, NL80211_STA_INFO_TX_FAILED,
sinfo->tx_failed);
+ if (sinfo->filled & STATION_INFO_BSS_PARAM) {
+ bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM);
+ if (!bss_param)
+ goto nla_put_failure;
+
+ if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT)
+ NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_CTS_PROT);
+ if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE)
+ NLA_PUT_FLAG(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE);
+ if (sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME)
+ NLA_PUT_FLAG(msg,
+ NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME);
+ NLA_PUT_U8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD,
+ sinfo->bss_param.dtim_period);
+ NLA_PUT_U16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL,
+ sinfo->bss_param.beacon_interval);
+
+ nla_nest_end(msg, bss_param);
+ }
nla_nest_end(msg, sinfoattr);
return genlmsg_end(msg, hdr);
--
1.7.3.1
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