Return-path: Received: from mail-wm0-f66.google.com ([74.125.82.66]:34089 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754053AbcLLBwa (ORCPT ); Sun, 11 Dec 2016 20:52:30 -0500 Received: by mail-wm0-f66.google.com with SMTP id g23so8100741wme.1 for ; Sun, 11 Dec 2016 17:52:29 -0800 (PST) Received: from localhost.localdomain ([92.185.195.211]) by smtp.gmail.com with ESMTPSA id ia7sm54561249wjb.23.2016.12.11.17.52.27 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 11 Dec 2016 17:52:27 -0800 (PST) From: Andrew Zaborowski To: linux-wireless@vger.kernel.org Subject: [PATCH v2 4/4] mac80211: Add set_cqm_rssi_range_config Date: Mon, 12 Dec 2016 02:52:13 +0100 Message-Id: <20161212015213.21323-4-andrew.zaborowski@intel.com> (sfid-20161212_025242_357440_4EA50ECD) In-Reply-To: <20161212015213.21323-2-andrew.zaborowski@intel.com> References: <20161212015213.21323-2-andrew.zaborowski@intel.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: Support .set_cqm_rssi_range_config if the beacons are available for processing in mac80211. There's no reason that this couldn't be offloaded by mac80211-based drivers but there's no driver method for that added in this patch as I don't have the hardware. Signed-off-by: Andrew Zaborowski --- include/net/mac80211.h | 6 ++++++ net/mac80211/cfg.c | 28 ++++++++++++++++++++++++++++ net/mac80211/mlme.c | 24 ++++++++++++++++++++++++ 3 files changed, 58 insertions(+) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 33026e1..671e498 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -502,6 +502,10 @@ struct ieee80211_mu_group_data { * implies disabled. As with the cfg80211 callback, a change here should * cause an event to be sent indicating where the current value is in * relation to the newly configured threshold. + * @cqm_rssi_low: Connection quality monitor RSSI lower threshold, a zero value + * implies disabled. This is an alternative mechanism to the single + * threshold event and can't be enabled simultaneously. + * @cqm_rssi_high: Connection quality monitor RSSI upper threshold. * @cqm_rssi_hyst: Connection quality monitor RSSI hysteresis * @arp_addr_list: List of IPv4 addresses for hardware ARP filtering. The * may filter ARP queries targeted for other addresses than listed here. @@ -554,6 +558,8 @@ struct ieee80211_bss_conf { u16 ht_operation_mode; s32 cqm_rssi_thold; u32 cqm_rssi_hyst; + s32 cqm_rssi_low; + s32 cqm_rssi_high; struct cfg80211_chan_def chandef; struct ieee80211_mu_group_data mu_group; __be32 arp_addr_list[IEEE80211_BSS_ARP_ADDR_LIST_LEN]; diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index fd6541f..6ac0523 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -2647,6 +2647,33 @@ static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy, bss_conf->cqm_rssi_thold = rssi_thold; bss_conf->cqm_rssi_hyst = rssi_hyst; + bss_conf->cqm_rssi_low = 0; + bss_conf->cqm_rssi_high = 0; + sdata->u.mgd.last_cqm_event_signal = 0; + + /* tell the driver upon association, unless already associated */ + if (sdata->u.mgd.associated && + sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI) + ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM); + + return 0; +} + +static int ieee80211_set_cqm_rssi_range_config(struct wiphy *wiphy, + struct net_device *dev, + s32 rssi_low, s32 rssi_high) +{ + struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_vif *vif = &sdata->vif; + struct ieee80211_bss_conf *bss_conf = &vif->bss_conf; + + if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER) + return -EOPNOTSUPP; + + bss_conf->cqm_rssi_low = rssi_low; + bss_conf->cqm_rssi_high = rssi_high; + bss_conf->cqm_rssi_thold = 0; + bss_conf->cqm_rssi_hyst = 0; sdata->u.mgd.last_cqm_event_signal = 0; /* tell the driver upon association, unless already associated */ @@ -3645,6 +3672,7 @@ const struct cfg80211_ops mac80211_config_ops = { .mgmt_tx = ieee80211_mgmt_tx, .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait, .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config, + .set_cqm_rssi_range_config = ieee80211_set_cqm_rssi_range_config, .mgmt_frame_register = ieee80211_mgmt_frame_register, .set_antenna = ieee80211_set_antenna, .get_antenna = ieee80211_get_antenna, diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 6898ecb..7f99918 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -3416,6 +3416,30 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, } } + if (bss_conf->cqm_rssi_low && + ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT) { + int sig = -ewma_beacon_signal_read(&ifmgd->ave_beacon_signal); + int last_event = ifmgd->last_cqm_event_signal; + int low = bss_conf->cqm_rssi_low; + int high = bss_conf->cqm_rssi_high; + + if (sig < low && + (last_event == 0 || last_event >= low)) { + ifmgd->last_cqm_event_signal = sig; + ieee80211_cqm_rssi_notify( + &sdata->vif, + NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, + sig, GFP_KERNEL); + } else if (sig > high && + (last_event == 0 || last_event <= high)) { + ifmgd->last_cqm_event_signal = sig; + ieee80211_cqm_rssi_notify( + &sdata->vif, + NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, + sig, GFP_KERNEL); + } + } + if (ifmgd->flags & IEEE80211_STA_CONNECTION_POLL) { mlme_dbg_ratelimited(sdata, "cancelling AP probe due to a received beacon\n"); -- 2.9.3