From patchwork Thu Sep 16 02:54:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Aloka Dixit X-Patchwork-Id: 12498037 X-Patchwork-Delegate: johannes@sipsolutions.net Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7ADFBC433FE for ; Thu, 16 Sep 2021 02:55:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 63FFF6113E for ; Thu, 16 Sep 2021 02:55:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234012AbhIPC41 (ORCPT ); Wed, 15 Sep 2021 22:56:27 -0400 Received: from m43-7.mailgun.net ([69.72.43.7]:16342 "EHLO m43-7.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233981AbhIPC40 (ORCPT ); Wed, 15 Sep 2021 22:56:26 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1631760907; h=Content-Transfer-Encoding: MIME-Version: References: In-Reply-To: Message-Id: Date: Subject: To: From: Sender; bh=vlruAR/mFYVXxb712Zn9/EfmHlG0yf4GZsJMEX3a4BQ=; b=jgyxEVKD4Bt3ydQ1vP16RS06KpCPDM1VckPwXi7ZdMiKOhTzeptxjMzeFq7O7oG+8kKnu3G6 QL/m2yXRa6ZRQzfOrZznHsjG+BdUCOJt2T1KjBkn9WSgGe+QyEdbapGu9iSnrARX/gGjZuUU A34DMcf07d/40PdmZoqWFkTi29A= X-Mailgun-Sending-Ip: 69.72.43.7 X-Mailgun-Sid: WyI3YTAwOSIsICJsaW51eC13aXJlbGVzc0B2Z2VyLmtlcm5lbC5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n04.prod.us-east-1.postgun.com with SMTP id 6142b1f8ec62f57c9a6a4527 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Thu, 16 Sep 2021 02:54:48 GMT Sender: alokad=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 1FDB4C4360C; Thu, 16 Sep 2021 02:54:48 +0000 (UTC) Received: from alokad-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: alokad) by smtp.codeaurora.org (Postfix) with ESMTPSA id D0BB3C4360D; Thu, 16 Sep 2021 02:54:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org D0BB3C4360D Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=codeaurora.org From: Aloka Dixit To: johannes@sipsolutions.net, linux-wireless@vger.kernel.org Subject: [PATCH v12 2/4] mac80211: MBSSID support in interface handling Date: Wed, 15 Sep 2021 19:54:35 -0700 Message-Id: <20210916025437.29138-3-alokad@codeaurora.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210916025437.29138-1-alokad@codeaurora.org> References: <20210916025437.29138-1-alokad@codeaurora.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: John Crispin Configure multiple BSSID and enhanced multi-BSSID advertisement (EMA) parameters in mac80211 for AP mode. For each interface, 'mbssid_tx_vif' points to the transmitting interface of the MBSSID set. The pointer is set to NULL if MBSSID is disabled. Function ieee80211_stop() is modified to always bring down all the non-transmitting interfaces first and the transmitting interface last. Signed-off-by: John Crispin Co-developed-by: Aloka Dixit Signed-off-by: Aloka Dixit --- v12: Only cosmetic changes. v11: Moved dev_close() for non-transmitting interfaces before locking wiphy->mtx. Removed interface count, instead mac80211 passes pointer 'mbssid_tx_vif' to the driver for each interface. Removed dev_close() calls from ieee80211_del_iface(). Removed IEEE80211_HW_SUPPORTS_MBSSID_AP and IEEE80211_HW_SUPPORTS_EMA_AP. Instead of new parameters in struct ieee80211_bss_conf, reused the existing ones which were used for STA mode. include/net/mac80211.h | 3 +++ net/mac80211/cfg.c | 38 ++++++++++++++++++++++++++++++++++++++ net/mac80211/iface.c | 29 ++++++++++++++++++++++++++++- 3 files changed, 69 insertions(+), 1 deletion(-) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index af0fc13cea34..0d405e36c213 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -1715,6 +1715,7 @@ enum ieee80211_offload_flags { * write-protected by sdata_lock and local->mtx so holding either is fine * for read access. * @color_change_color: the bss color that will be used after the change. + * @mbssid_tx_vif: Pointer to the transmitting interface if MBSSID is enabled. */ struct ieee80211_vif { enum nl80211_iftype type; @@ -1746,6 +1747,8 @@ struct ieee80211_vif { bool color_change_active; u8 color_change_color; + struct ieee80211_vif *mbssid_tx_vif; + /* must be last */ u8 drv_priv[] __aligned(sizeof(void *)); }; diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index d69b31c20fe2..e2b791c37591 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -111,6 +111,36 @@ static int ieee80211_set_mon_options(struct ieee80211_sub_if_data *sdata, return 0; } +static int ieee80211_set_ap_mbssid_options(struct ieee80211_sub_if_data *sdata, + struct cfg80211_mbssid_config params) +{ + struct ieee80211_sub_if_data *tx_sdata; + + sdata->vif.mbssid_tx_vif = NULL; + sdata->vif.bss_conf.bssid_index = 0; + sdata->vif.bss_conf.nontransmitted = false; + sdata->vif.bss_conf.ema_ap = false; + + if (sdata->vif.type != NL80211_IFTYPE_AP || !params.tx_wdev) + return -EINVAL; + + tx_sdata = IEEE80211_WDEV_TO_SUB_IF(params.tx_wdev); + if (!tx_sdata) + return -EINVAL; + + if (tx_sdata == sdata) { + sdata->vif.mbssid_tx_vif = &sdata->vif; + } else { + sdata->vif.mbssid_tx_vif = &tx_sdata->vif; + sdata->vif.bss_conf.nontransmitted = true; + sdata->vif.bss_conf.bssid_index = params.index; + } + if (params.ema) + sdata->vif.bss_conf.ema_ap = true; + + return 0; +} + static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy, const char *name, unsigned char name_assign_type, @@ -1105,6 +1135,14 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, changed |= BSS_CHANGED_HE_BSS_COLOR; } + if (sdata->vif.type == NL80211_IFTYPE_AP && + params->mbssid_config.tx_wdev) { + err = ieee80211_set_ap_mbssid_options(sdata, + params->mbssid_config); + if (err) + return err; + } + mutex_lock(&local->mtx); err = ieee80211_vif_use_channel(sdata, ¶ms->chandef, IEEE80211_CHANCTX_SHARED); diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 62c95597704b..7c687434c5e9 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -632,17 +632,44 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_do ieee80211_add_virtual_monitor(local); } +static void ieee80211_stop_mbssid(struct ieee80211_sub_if_data *sdata) +{ + struct ieee80211_sub_if_data *tx_sdata, *non_tx_sdata, *tmp_sdata; + struct ieee80211_vif *tx_vif = sdata->vif.mbssid_tx_vif; + + tx_sdata = vif_to_sdata(tx_vif); + sdata->vif.mbssid_tx_vif = NULL; + + list_for_each_entry_safe(non_tx_sdata, tmp_sdata, + &tx_sdata->local->interfaces, list) { + if (non_tx_sdata != sdata && non_tx_sdata != tx_sdata && + non_tx_sdata->vif.mbssid_tx_vif == tx_vif && + ieee80211_sdata_running(non_tx_sdata)) { + non_tx_sdata->vif.mbssid_tx_vif = NULL; + dev_close(non_tx_sdata->wdev.netdev); + } + } + + if (sdata != tx_sdata && ieee80211_sdata_running(tx_sdata)) { + tx_sdata->vif.mbssid_tx_vif = NULL; + dev_close(tx_sdata->wdev.netdev); + } +} + static int ieee80211_stop(struct net_device *dev) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); - /* close all dependent VLAN interfaces before locking wiphy */ + /* close dependent VLAN and MBSSID interfaces before locking wiphy */ if (sdata->vif.type == NL80211_IFTYPE_AP) { struct ieee80211_sub_if_data *vlan, *tmpsdata; list_for_each_entry_safe(vlan, tmpsdata, &sdata->u.ap.vlans, u.vlan.list) dev_close(vlan->dev); + + if (sdata->vif.mbssid_tx_vif) + ieee80211_stop_mbssid(sdata); } wiphy_lock(sdata->local->hw.wiphy);