Return-path: Received: from smtp.codeaurora.org ([198.145.29.96]:52624 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934466AbeFMK7k (ORCPT ); Wed, 13 Jun 2018 06:59:40 -0400 From: Tamizh chelvam To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Tamizh chelvam Subject: [PATCH 3/4] cfg80211: Add support to notify station's txrate crossing event Date: Wed, 13 Jun 2018 16:28:58 +0530 Message-Id: <1528887539-26821-4-git-send-email-tamizhr@codeaurora.org> (sfid-20180613_125953_511213_75D9ED46) In-Reply-To: <1528887539-26821-1-git-send-email-tamizhr@codeaurora.org> References: <1528887539-26821-1-git-send-email-tamizhr@codeaurora.org> Sender: linux-wireless-owner@vger.kernel.org List-ID: 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 --- include/net/cfg80211.h | 17 +++++++++++++++++ net/wireless/nl80211.c | 38 ++++++++++++++++++++++++++++++++++++++ net/wireless/trace.h | 25 +++++++++++++++++++++++++ 3 files changed, 80 insertions(+) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 5bf0000..c0f8018 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -5899,6 +5899,23 @@ 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..645a9fd 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -15576,6 +15576,44 @@ 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 && + txrate_event != + NL80211_STA_MON_TXRATE_THRESHOLD_IN_RANGE)) + 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 -- 1.7.9.5