Add cfg80211_sta_mon_txrate_notify to update userspace upon
crossing the configured txrate threshold for a station.
This uses NL80211_CMD_NOTIFY_STA_MON along with
NL80211_ATTR_STA_MON_TXRATE_THRESHOLD_EVENT, NL80211_ATTR_MAC
and NL80211_ATTR_STA_MON_TXRATE_LEVEL. Userspace application can
make a decision on the station depends on this notification.
Signed-off-by: Tamizh chelvam <tami...@codeaurora.org>
---
include/net/cfg80211.h | 17 +++++++++++++++++
net/wireless/nl80211.c | 36 ++++++++++++++++++++++++++++++++++++
net/wireless/trace.h | 25 +++++++++++++++++++++++++
3 files changed, 78 insertions(+)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index ab8a43f..b02ed31 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -5898,6 +5898,23 @@ void cfg80211_cqm_rssi_notify(struct net_device *dev,
s32 rssi_level, gfp_t gfp);
/**
+ * cfg80211_sta_mon_txrate_notify - txrate event for connected stations
+ * @dev: network device
+ * @peer: peer's MAC address
+ * @txrate_event: the triggered TX RATE event
+ * @txrate_level: new TX RATE level value or 0 if not available
+ * @gfp: context flags
+ *
+ * This function is called when a average of attempted frame txrate crossed
+ * above configured high txrate or below configured low txrate event
+ * occurs for a station.
+ */
+void
+cfg80211_sta_mon_txrate_notify(struct net_device *dev, const u8 *peer,
+ enum nl80211_sta_mon_txrate_threshold_event txrate_event,
+ u32 txrate_level, gfp_t gfp);
+
+/**
* cfg80211_cqm_pktloss_notify - notify userspace about packetloss to peer
* @dev: network device
* @peer: peer's MAC address
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 31680d6..6701961 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -15576,6 +15576,42 @@ void cfg80211_sta_mon_rssi_notify(struct net_device
*dev, const u8 *peer,
}
EXPORT_SYMBOL(cfg80211_sta_mon_rssi_notify);
+void
+cfg80211_sta_mon_txrate_notify(struct net_device *dev, const u8 *peer,
+ enum nl80211_sta_mon_txrate_threshold_event txrate_event,
+ u32 txrate_level, gfp_t gfp)
+{
+ struct sk_buff *msg;
+
+ trace_cfg80211_sta_mon_txrate_notify(dev, peer, txrate_event,
+ txrate_level);
+
+ if (WARN_ON(txrate_event !=
+ NL80211_STA_MON_TXRATE_THRESHOLD_EVENT_LOW &&
+ txrate_event !=
+ NL80211_STA_MON_TXRATE_THRESHOLD_EVENT_HIGH))
+ return;
+
+ msg = cfg80211_prepare_sta_mon(dev, peer, gfp);
+ if (!msg)
+ return;
+
+ if (nla_put_u32(msg, NL80211_ATTR_STA_MON_TXRATE_THRESHOLD_EVENT,
+ txrate_event))
+ goto nla_put_failure;
+
+ if (txrate_level && nla_put_u32(msg, NL80211_ATTR_STA_MON_TXRATE_LEVEL,
+ txrate_level))
+ goto nla_put_failure;
+
+ cfg80211_send_sta_mon(msg, gfp);
+
+ return;
+nla_put_failure:
+ nlmsg_free(msg);
+}
+EXPORT_SYMBOL(cfg80211_sta_mon_txrate_notify);
+
static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev,
struct net_device *netdev,
struct cfg80211_chan_def *chandef,
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index ca985c2..95f4a31 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -3355,6 +3355,31 @@
WIPHY_PR_ARG, NETDEV_PR_ARG, MAC_PR_ARG(peer),
__entry->low_txrate_thold, __entry->high_txrate_thold)
);
+
+TRACE_EVENT(cfg80211_sta_mon_txrate_notify,
+ TP_PROTO(struct net_device *netdev, const u8 *peer,
+ enum nl80211_sta_mon_txrate_threshold_event txrate_event,
+ u32 txrate_level),
+ TP_ARGS(netdev, peer, txrate_event, txrate_level),
+ TP_STRUCT__entry(
+ NETDEV_ENTRY
+ MAC_ENTRY(peer)
+ __field(enum nl80211_sta_mon_txrate_threshold_event,
+ txrate_event)
+ __field(u32, txrate_level)
+ ),
+ TP_fast_assign(
+ NETDEV_ASSIGN;
+ MAC_ASSIGN(peer, peer);
+ __entry->txrate_event = txrate_event;
+ __entry->txrate_level = txrate_level;
+ ),
+ TP_printk(NETDEV_PR_FMT ", peer: " MAC_PR_FMT
+ ", tx_rate event: %d, txrate : %u",
+ NETDEV_PR_ARG, MAC_PR_ARG(peer),
+ __entry->txrate_event, __entry->txrate_level)
+);
+
#endif /* !__RDEV_OPS_TRACE || TRACE_HEADER_MULTI_READ */
#undef TRACE_INCLUDE_PATH
--
1.9.1
