From patchwork Tue Dec 18 22:32:50 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Rajkumar Manoharan X-Patchwork-Id: 10736425 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 695D96C2 for ; Tue, 18 Dec 2018 22:33:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 59E2F2AAF9 for ; Tue, 18 Dec 2018 22:33:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4E39D2B0A1; Tue, 18 Dec 2018 22:33:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A69BC2AAF9 for ; Tue, 18 Dec 2018 22:33:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727632AbeLRWdL (ORCPT ); Tue, 18 Dec 2018 17:33:11 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:59066 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726817AbeLRWdK (ORCPT ); Tue, 18 Dec 2018 17:33:10 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 94FD5608CF; Tue, 18 Dec 2018 22:33:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1545172389; bh=gBL+jGKKjzaPQXzKlwKqSjUFfljoFerNH+ShJHWt4dQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=S0eFebNEcdbTbcI0Zr3Tj0vQB4FvxF6Shyz6YNdGPgzKmlVX7eMCS5b6OyRO/NEbV TP99lbZiI2p7yMlA7hCYO1eniCfC8gRIa20+OShjPdDMUJslKUwHbQH1bEPAqLv5jp T7w78dobIOO+qMb+Jq9snOwzd1dAGTUDys5lOBjE= 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 54A1E60866; Tue, 18 Dec 2018 22:33:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1545172388; bh=gBL+jGKKjzaPQXzKlwKqSjUFfljoFerNH+ShJHWt4dQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CChQ+Wgs+O6ss8E3QkC7DMG6uCjD2eFbt1diNb2byq9OToGt6wl+sl656PYDnfSMu Fe7adJg37TByx629tYhXBXQ3MaienUXXX0TOcyg3VZwEDUjGmMJSELdiEoL7TWPxTK Lp+CT/qySzSXYCIaj78f7pIS7yHpKI+AOtRKp4Wc= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 54A1E60866 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=rmanohar@codeaurora.org Received: by smtp.codeaurora.org (sSMTP sendmail emulation); Tue, 18 Dec 2018 14:33:06 -0800 From: Rajkumar Manoharan To: linux-wireless@vger.kernel.org, ath10k@lists.infradead.org Cc: make-wifi-fast@lists.bufferbloat.net, =?utf-8?q?Toke_H=C3=B8iland-J?= =?utf-8?q?=C3=B8rgensen?= , Rajkumar Manoharan Subject: [PATCH v4 2/6] cfg80211: Add airtime statistics and settings Date: Tue, 18 Dec 2018 14:32:50 -0800 Message-Id: <1545172374-1072-3-git-send-email-rmanohar@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1545172374-1072-1-git-send-email-rmanohar@codeaurora.org> References: <1545172374-1072-1-git-send-email-rmanohar@codeaurora.org> MIME-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.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 [rmanohar@codeaurora.org: fixed checkpatch warnings] Signed-off-by: Rajkumar Manoharan --- include/net/cfg80211.h | 10 +++++++++- include/uapi/linux/nl80211.h | 15 +++++++++++++++ net/wireless/nl80211.c | 30 ++++++++++++++++++++++++++++++ 3 files changed, 54 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 2317727d6413..aa53a8563295 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 +5314,18 @@ 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]) { + params.airtime_weight = + nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]); + if (!params.airtime_weight) + return -EINVAL; + } + + if (params.airtime_weight && + !wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) + return -EOPNOTSUPP; + /* Include parameters for TDLS peer (will check later) */ err = nl80211_set_station_tdls(info, ¶ms); if (err) @@ -5436,6 +5454,18 @@ 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]) { + params.airtime_weight = + nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]); + if (!params.airtime_weight) + return -EINVAL; + } + + if (params.airtime_weight && + !wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) + return -EOPNOTSUPP; + err = nl80211_parse_sta_channel_info(info, ¶ms); if (err) return err;