From patchwork Tue Oct 9 12:32:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Toke_H=C3=B8iland-J=C3=B8rgensen?= X-Patchwork-Id: 10632413 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 90F3D13BB for ; Tue, 9 Oct 2018 12:33:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8480528A32 for ; Tue, 9 Oct 2018 12:33:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 78EB528C71; Tue, 9 Oct 2018 12:33:05 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 E01EC28A32 for ; Tue, 9 Oct 2018 12:33:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727001AbeJITtq (ORCPT ); Tue, 9 Oct 2018 15:49:46 -0400 Received: from mail.toke.dk ([52.28.52.200]:56815 "EHLO mail.toke.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726984AbeJITtq (ORCPT ); Tue, 9 Oct 2018 15:49:46 -0400 Subject: [PATCH RFC v5 2/4] cfg80211: Add airtime statistics and settings DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=toke.dk; s=20161023; t=1539088380; bh=X7KXQ+Yiea6O5Sv8sN5mOeX5v2k2QL2Axvbqgis6pWQ=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=a0Ui4LbwY5KMp+j/n/0LT84TAw98BwObdn85u+KUU85vG5B3/0Tr5wJql/m9yJjse TrI5pJKjhUxG2Cf+0qnWWXuRRBPJHMfvS8AKpfESQZqJp339yPQjtER+XYn8PsELAv GPDTUdE+b3YsaIKGGWdNNGjv3n7OI2gWsRTc5MbGRsZq7Akr2dLX/V2+AjEGeet7rV fSr4J3+QWKfbaooJzUVFxPLR0JjHneg7/4kHQPJj1o0dq4E29wvLLPU/NpQMFcflcg O7/fdeCeKgnVLs5NrdjH2mkgf7rUWWyRePRo3TVoOehCDz8WNvdsnqHh3sEuvCzJQN xd27fJi57MjAA== From: Toke =?utf-8?q?H=C3=B8iland-J=C3=B8rgensen?= To: linux-wireless@vger.kernel.org Cc: make-wifi-fast@lists.bufferbloat.net, Felix Fietkau , Rajkumar Manoharan , Kan Yan Date: Tue, 09 Oct 2018 14:32:58 +0200 X-Clacks-Overhead: GNU Terry Pratchett Message-ID: <153908837892.9471.13229753923382209882.stgit@alrua-kau> In-Reply-To: <153908805217.9471.9290979918041653328.stgit@alrua-kau> References: <153908805217.9471.9290979918041653328.stgit@alrua-kau> 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 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 | 29 +++++++++++++++++++++++++++++ 3 files changed, 53 insertions(+), 1 deletion(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index 9f3ed79c39d7..91d6fc222263 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -990,6 +990,7 @@ 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; @@ -1019,6 +1020,7 @@ struct station_parameters { int support_p2p_ps; const struct ieee80211_he_cap_elem *he_capa; u8 he_capa_len; + u16 airtime_weight; }; /** @@ -1286,6 +1288,8 @@ 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. @@ -1332,10 +1336,12 @@ 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; }; @@ -2363,6 +2369,8 @@ 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 cfc94178d608..3664bdc7c8c1 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -2241,6 +2241,9 @@ enum nl80211_commands { * association request when used with NL80211_CMD_NEW_STATION). Can be set * only if %NL80211_STA_FLAG_WME is set. * + * @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 @@ -2682,6 +2685,8 @@ enum nl80211_attrs { NL80211_ATTR_HE_CAPABILITY, + NL80211_ATTR_AIRTIME_WEIGHT, + /* add attributes here, update the policy in nl80211.c */ __NL80211_ATTR_AFTER_LAST, @@ -3051,6 +3056,9 @@ enum nl80211_sta_bss_param { * @NL80211_STA_INFO_PAD: attribute used for padding for 64-bit alignment * @NL80211_STA_INFO_ACK_SIGNAL: signal strength of the last ACK frame(u8, dBm) * @NL80211_STA_INFO_ACK_SIGNAL_AVG: avg signal strength of ACK frames (s8, dBm) + * @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 */ @@ -3091,6 +3099,8 @@ enum nl80211_sta_info { NL80211_STA_INFO_PAD, NL80211_STA_INFO_ACK_SIGNAL, NL80211_STA_INFO_ACK_SIGNAL_AVG, + NL80211_STA_INFO_TX_DURATION, + NL80211_STA_INFO_AIRTIME_WEIGHT, /* keep last */ __NL80211_STA_INFO_AFTER_LAST, @@ -5231,6 +5241,10 @@ 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. */ @@ -5269,6 +5283,7 @@ enum nl80211_ext_feature_index { NL80211_EXT_FEATURE_SCAN_RANDOM_SN, NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT, NL80211_EXT_FEATURE_CAN_REPLACE_PTK0, + 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 d5f9b5235cdd..9db19ae57716 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -430,6 +430,8 @@ static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 }, [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY, .len = NL80211_HE_MAX_CAPABILITY_LEN }, + + [NL80211_ATTR_AIRTIME_WEIGHT] = { .type = NLA_U16 }, }; /* policy for the key attributes */ @@ -4656,6 +4658,11 @@ 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: @@ -5293,6 +5300,17 @@ 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) @@ -5431,6 +5449,17 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) return -EINVAL; } + 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;