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Received: from smtp.codeaurora.org ([198.145.29.96]) by merlin.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gLG2K-0008RP-MY for ath10k@lists.infradead.org; Fri, 09 Nov 2018 23:18:03 +0000 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 609CE60A9B; Fri, 9 Nov 2018 23:17:45 +0000 (UTC) Received: from smtp.codeaurora.org (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) (Authenticated sender: rmanohar@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id D524A602BC; Fri, 9 Nov 2018 23:17:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org D524A602BC Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=pass (p=none dis=none) header.from=qti.qualcomm.com Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=pass smtp.mailfrom=rmanohar@qti.qualcomm.com Received: by smtp.codeaurora.org (sSMTP sendmail emulation); Fri, 09 Nov 2018 15:17:42 -0800 From: Rajkumar Manoharan To: linux-wireless@vger.kernel.org, ath10k@lists.infradead.org Subject: [PATCH v2 2/6] cfg80211: Add airtime statistics and settings Date: Fri, 9 Nov 2018 15:16:57 -0800 Message-Id: <1541805421-27309-3-git-send-email-rmanohar@qti.qualcomm.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1541805421-27309-1-git-send-email-rmanohar@qti.qualcomm.com> References: <1541805421-27309-1-git-send-email-rmanohar@qti.qualcomm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20181109_181800_868232_C90F3F76 X-CRM114-Status: GOOD ( 20.48 ) X-BeenThere: ath10k@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: make-wifi-fast@lists.bufferbloat.net, =?utf-8?q?Toke_H=C3=B8iland-J?= =?utf-8?q?=C3=B8rgensen?= Sender: "ath10k" Errors-To: ath10k-bounces+patchwork-ath10k=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Toke Høiland-Jørgensen This adds TX airtime statistics to the cfg80211 station dump (to go along with the RX info already present), and adds a new parameter to set the airtime weight of each station. The latter allows userspace to implement policies for different stations by varying their weights. Signed-off-by: Toke Høiland-Jørgensen --- include/net/cfg80211.h | 10 +++++++++- include/uapi/linux/nl80211.h | 15 +++++++++++++++ net/wireless/nl80211.c | 28 ++++++++++++++++++++++++++++ 3 files changed, 52 insertions(+), 1 deletion(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 1fa41b7a1be3..f1312f17fbef 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -1001,6 +1001,7 @@ enum station_parameters_apply_mask { * @support_p2p_ps: information if station supports P2P PS mechanism * @he_capa: HE capabilities of station * @he_capa_len: the length of the HE capabilities + * @airtime_weight: airtime scheduler weight for this station */ struct station_parameters { const u8 *supported_rates; @@ -1030,6 +1031,7 @@ struct station_parameters { int support_p2p_ps; const struct ieee80211_he_cap_elem *he_capa; u8 he_capa_len; + u16 airtime_weight; }; /** @@ -1297,6 +1299,8 @@ struct cfg80211_tid_stats { * @rx_beacon_signal_avg: signal strength average (in dBm) for beacons received * from this peer * @rx_duration: aggregate PPDU duration(usecs) for all the frames from a peer + * @tx_duration: aggregate PPDU duration(usecs) for all the frames to a peer + * @airtime_weight: current airtime scheduling weight * @pertid: per-TID statistics, see &struct cfg80211_tid_stats, using the last * (IEEE80211_NUM_TIDS) index for MSDUs not encapsulated in QoS-MPDUs. * Note that this doesn't use the @filled bit, but is used if non-NULL. @@ -1347,10 +1351,12 @@ struct station_info { u32 expected_throughput; - u64 rx_beacon; + u64 tx_duration; u64 rx_duration; + u64 rx_beacon; u8 rx_beacon_signal_avg; struct cfg80211_tid_stats *pertid; + u16 airtime_weight; s8 ack_signal; s8 avg_ack_signal; @@ -2381,6 +2387,8 @@ enum wiphy_params_flags { WIPHY_PARAM_TXQ_QUANTUM = 1 << 8, }; +#define IEEE80211_DEFAULT_AIRTIME_WEIGHT 256 + /** * struct cfg80211_pmksa - PMK Security Association * diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h index 6d610bae30a9..9428bd0ebb1a 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -2254,6 +2254,9 @@ enum nl80211_commands { * @NL80211_ATTR_FTM_RESPONDER_STATS: Nested attribute with FTM responder * statistics, see &enum nl80211_ftm_responder_stats. * + * @NL80211_ATTR_AIRTIME_WEIGHT: Station's weight when scheduled by the airtime + * scheduler. + * * @NUM_NL80211_ATTR: total number of nl80211_attrs available * @NL80211_ATTR_MAX: highest attribute number currently defined * @__NL80211_ATTR_AFTER_LAST: internal use @@ -2699,6 +2702,8 @@ enum nl80211_attrs { NL80211_ATTR_FTM_RESPONDER_STATS, + NL80211_ATTR_AIRTIME_WEIGHT, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -3074,6 +3079,9 @@ enum nl80211_sta_bss_param { * with an FCS error (u32, from this station). This count may not include * some packets with an FCS error due to TA corruption. Hence this counter * might not be fully accurate. + * @NL80211_STA_INFO_TX_DURATION: aggregate PPDU duration for all frames + * sent to the station (u64, usec) + * @NL80211_STA_INFO_AIRTIME_WEIGHT: current airtime weight for station (u16) * @__NL80211_STA_INFO_AFTER_LAST: internal * @NL80211_STA_INFO_MAX: highest possible station info attribute */ @@ -3116,6 +3124,8 @@ enum nl80211_sta_info { NL80211_STA_INFO_ACK_SIGNAL_AVG, NL80211_STA_INFO_RX_MPDUS, NL80211_STA_INFO_FCS_ERROR_COUNT, + NL80211_STA_INFO_TX_DURATION, + NL80211_STA_INFO_AIRTIME_WEIGHT, /* keep last */ __NL80211_STA_INFO_AFTER_LAST, @@ -5258,6 +5268,10 @@ enum nl80211_feature_flags { * if this flag is not set. Ignoring this can leak clear text packets and/or * freeze the connection. * + * @NL80211_EXT_FEATURE_AIRTIME_FAIRNESS: Driver supports getting airtime + * fairness for transmitted packets and has enabled airtime fairness + * scheduling. + * * @NUM_NL80211_EXT_FEATURES: number of extended features. * @MAX_NL80211_EXT_FEATURES: highest extended feature index. */ @@ -5297,6 +5311,7 @@ enum nl80211_ext_feature_index { NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT, NL80211_EXT_FEATURE_CAN_REPLACE_PTK0, NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER, + NL80211_EXT_FEATURE_AIRTIME_FAIRNESS, /* add new features before the definition below */ NUM_NL80211_EXT_FEATURES, diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 8d763725498c..7837ff74833a 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -497,6 +497,7 @@ static int validate_ie_attr(const struct nlattr *attr, .type = NLA_NESTED, .validation_data = nl80211_ftm_responder_policy, }, + [NL80211_ATTR_AIRTIME_WEIGHT] = { .type = NLA_U16 }, }; /* policy for the key attributes */ @@ -4690,6 +4691,11 @@ static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, PUT_SINFO(PLID, plid, u16); PUT_SINFO(PLINK_STATE, plink_state, u8); PUT_SINFO_U64(RX_DURATION, rx_duration); + PUT_SINFO_U64(TX_DURATION, tx_duration); + + if (wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) + PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16); switch (rdev->wiphy.signal_type) { case CFG80211_SIGNAL_TYPE_MBM: @@ -5308,6 +5314,17 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); } + if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]) { + if (!wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) + return -EOPNOTSUPP; + + params.airtime_weight = + nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]); + if (!params.airtime_weight) + return -EINVAL; + } + /* Include parameters for TDLS peer (will check later) */ err = nl80211_set_station_tdls(info, ¶ms); if (err) @@ -5436,6 +5453,17 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) params.plink_action = nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); + if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]) { + if (!wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) + return -EOPNOTSUPP; + + params.airtime_weight = + nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]); + if (!params.airtime_weight) + return -EINVAL; + } + err = nl80211_parse_sta_channel_info(info, ¶ms); if (err) return err;