From patchwork Wed Nov 4 15:52:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= X-Patchwork-Id: 11881243 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D4DA96A2 for ; Wed, 4 Nov 2020 15:54:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9B645223AB for ; Wed, 4 Nov 2020 15:54:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=silabs.onmicrosoft.com header.i=@silabs.onmicrosoft.com header.b="QzlS57fj" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729263AbgKDPyK (ORCPT ); Wed, 4 Nov 2020 10:54:10 -0500 Received: from mail-dm6nam11on2049.outbound.protection.outlook.com ([40.107.223.49]:54240 "EHLO NAM11-DM6-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1730793AbgKDPyF (ORCPT ); Wed, 4 Nov 2020 10:54:05 -0500 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=OGdXCnKgz8twCdEdrYN8h7MpVXKXRbZBGrIFb7VbqBYtRQ0S8y4FDQhXiHkpyUNQfq9fh65wBK7tL2FFVsUAsp7j95hQTuBXmJIxZ8MILTnOQDnO32AsaQK4MeMp02KD5baFqkJ3mZX+q/2p2KMMt6yaQsBvH3C6PfBinFqstchOYovA5enG3En8oeT8Pqj5+1waPUY/YIF4AwU11q1qRPmYEiFtFv+QSD/YXo7cj0qe8zt4NVn3Dkjk2gHMhv0IYaHyGYJT3opQXgOEr+AV7itG8Ry8zYWdvQEXcDG34OjIqq6KqwCGk2wGujvQvQz/EqD98L22+Q9MztE5LkqUIA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=yVDm7W0akEUjkcRCCEJ1oAdvjNfySJu4A7QXWZ6KM9c=; b=LHDVJuT9HLTvs3xveQkZXbW/CGZR9ioH9ghMAld4rDtQIiMAJY+PfsVvvHcO+A1sxI6793afVmLTlE8LUQZEiGmbE2ozasQDhBFPapwpbbKE3wg/AqoWyOtLgSrHvgu0Elng5NT7cghvJ7MsqHaUvGR2dc+M8Fzthna4e8eyIix2aDGl6zDcV/vIQiSzH2YP75xUEQZ4eU5/Oc17W+0nFg/KBbr9WVXPg9G/fzua91Y0ak9lx9v3XxJsRa+lALzitRsdpX+lZGWVbhOLKpRorRMzLZ7HqMsBZE5BFjJqF9wRz/2wP9p1MLYIubYVRHYAv1uoWWV4VYcEc6Saarou7A== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=silabs.com; dmarc=pass action=none header.from=silabs.com; dkim=pass header.d=silabs.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=silabs.onmicrosoft.com; s=selector2-silabs-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=yVDm7W0akEUjkcRCCEJ1oAdvjNfySJu4A7QXWZ6KM9c=; b=QzlS57fj1TPePuA0tghB61T6y7mKNYCBCzN2Wzn6YUPyvWpMU0baSCogiGxUvtHV9Uo+hpOueASwOQBzQ3YRbL3Aqoh201vocCeC0OoLC+v2Lbo5DgSvCkWxwDSG3gEqpj8aSEoyS5m9Ud+JYA/oDbXrYAj2WTssD2IcVTCg7YQ= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=silabs.com; Received: from SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) by SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3499.32; Wed, 4 Nov 2020 15:53:07 +0000 Received: from SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a]) by SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::4f5:fbe5:44a7:cb8a%5]) with mapi id 15.20.3499.032; Wed, 4 Nov 2020 15:53:07 +0000 From: Jerome Pouiller To: linux-wireless@vger.kernel.org, netdev@vger.kernel.org Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, Greg Kroah-Hartman , Kalle Valo , "David S . Miller" , devicetree@vger.kernel.org, Rob Herring , linux-mmc@vger.kernel.org, =?utf-8?q?Pali_Roh=C3=A1r?= , Ulf Hansson , =?utf-8?b?SsOpcsO0bWUgUG91aWxsZXI=?= Subject: [PATCH v3 20/24] wfx: add scan.c/scan.h Date: Wed, 4 Nov 2020 16:52:03 +0100 Message-Id: <20201104155207.128076-21-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201104155207.128076-1-Jerome.Pouiller@silabs.com> References: <20201104155207.128076-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [82.67.86.106] X-ClientProxiedBy: SN6PR01CA0032.prod.exchangelabs.com (2603:10b6:805:b6::45) To SN6PR11MB2718.namprd11.prod.outlook.com (2603:10b6:805:63::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from pc-42.silabs.com (82.67.86.106) by SN6PR01CA0032.prod.exchangelabs.com (2603:10b6:805:b6::45) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3499.19 via Frontend Transport; Wed, 4 Nov 2020 15:53:05 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 2111db74-c80c-41e2-0b95-08d880d9b8d6 X-MS-TrafficTypeDiagnostic: SN6PR11MB2718: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:3044; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: zxjxpE1KLE65msAzpbjvohBUmztn8ZyN3J+GZsP5NprS/995PCh5nRgZCNtEuFAoudKb5yNUDx3IylkIiDs80RPdodcRnBy/2IWkPMP7qh8czaVDqsvP8wPP2ybU2kb+Cybw/3cZh4WknCHtKljpE6CUriWrH/6c5gR2T3tORUeg2R0sfq0SCYzyOQiMZ5cptqdygaHFQGbWEWs7xXbPjKGP3p+Qh4qzWY1xrEQ0PqVZu3kztGjO5fFsULKFw4EJhdG7w4ACa3gwkLi4zdF24r24srmLRXRhBSen9KScso67jbSFNcTRQRjkhxK7dAgAgEIr0KDhST3oVYf7EZ5Iiw== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SN6PR11MB2718.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(366004)(346002)(376002)(39850400004)(136003)(396003)(8936002)(478600001)(186003)(16526019)(956004)(2616005)(6486002)(8676002)(66574015)(66476007)(66556008)(66946007)(316002)(7696005)(83380400001)(26005)(54906003)(107886003)(36756003)(52116002)(7416002)(4326008)(5660300002)(86362001)(1076003)(2906002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: silabs.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2111db74-c80c-41e2-0b95-08d880d9b8d6 X-MS-Exchange-CrossTenant-AuthSource: SN6PR11MB2718.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 04 Nov 2020 15:53:07.2477 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 54dbd822-5231-4b20-944d-6f4abcd541fb X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: N13SJemkdjMltNFeGXGTpTa583C3lfNcfAG2ktzYXIEzvqStxkwS4ZYjb+oTTwPQLCpjptDZxZ0OsKExT3F4fw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR11MB2718 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Jérôme Pouiller Signed-off-by: Jérôme Pouiller --- drivers/net/wireless/silabs/wfx/scan.c | 132 +++++++++++++++++++++++++ drivers/net/wireless/silabs/wfx/scan.h | 22 +++++ 2 files changed, 154 insertions(+) create mode 100644 drivers/net/wireless/silabs/wfx/scan.c create mode 100644 drivers/net/wireless/silabs/wfx/scan.h diff --git a/drivers/net/wireless/silabs/wfx/scan.c b/drivers/net/wireless/silabs/wfx/scan.c new file mode 100644 index 000000000000..fb47c7cddf2f --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/scan.c @@ -0,0 +1,132 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Scan related functions. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#include + +#include "scan.h" +#include "wfx.h" +#include "sta.h" +#include "hif_tx_mib.h" + +static void __ieee80211_scan_completed_compat(struct ieee80211_hw *hw, + bool aborted) +{ + struct cfg80211_scan_info info = { + .aborted = aborted, + }; + + ieee80211_scan_completed(hw, &info); +} + +static int update_probe_tmpl(struct wfx_vif *wvif, + struct cfg80211_scan_request *req) +{ + struct sk_buff *skb; + + skb = ieee80211_probereq_get(wvif->wdev->hw, wvif->vif->addr, + NULL, 0, req->ie_len); + if (!skb) + return -ENOMEM; + + skb_put_data(skb, req->ie, req->ie_len); + hif_set_template_frame(wvif, skb, HIF_TMPLT_PRBREQ, 0); + dev_kfree_skb(skb); + return 0; +} + +static int send_scan_req(struct wfx_vif *wvif, + struct cfg80211_scan_request *req, int start_idx) +{ + int i, ret, timeout; + struct ieee80211_channel *ch_start, *ch_cur; + + for (i = start_idx; i < req->n_channels; i++) { + ch_start = req->channels[start_idx]; + ch_cur = req->channels[i]; + WARN(ch_cur->band != NL80211_BAND_2GHZ, "band not supported"); + if (ch_cur->max_power != ch_start->max_power) + break; + if ((ch_cur->flags ^ ch_start->flags) & IEEE80211_CHAN_NO_IR) + break; + } + wfx_tx_lock_flush(wvif->wdev); + wvif->scan_abort = false; + reinit_completion(&wvif->scan_complete); + ret = hif_scan(wvif, req, start_idx, i - start_idx, &timeout); + if (ret) { + wfx_tx_unlock(wvif->wdev); + return -EIO; + } + ret = wait_for_completion_timeout(&wvif->scan_complete, timeout); + if (req->channels[start_idx]->max_power != wvif->vif->bss_conf.txpower) + hif_set_output_power(wvif, wvif->vif->bss_conf.txpower); + wfx_tx_unlock(wvif->wdev); + if (!ret) { + dev_notice(wvif->wdev->dev, "scan timeout\n"); + hif_stop_scan(wvif); + return -ETIMEDOUT; + } + if (wvif->scan_abort) { + dev_notice(wvif->wdev->dev, "scan abort\n"); + return -ECONNABORTED; + } + return i - start_idx; +} + +/* + * It is not really necessary to run scan request asynchronously. However, + * there is a bug in "iw scan" when ieee80211_scan_completed() is called before + * wfx_hw_scan() return + */ +void wfx_hw_scan_work(struct work_struct *work) +{ + struct wfx_vif *wvif = container_of(work, struct wfx_vif, scan_work); + struct ieee80211_scan_request *hw_req = wvif->scan_req; + int chan_cur, ret; + + mutex_lock(&wvif->wdev->conf_mutex); + mutex_lock(&wvif->scan_lock); + if (wvif->join_in_progress) { + dev_info(wvif->wdev->dev, "%s: abort in-progress REQ_JOIN", + __func__); + wfx_reset(wvif); + } + update_probe_tmpl(wvif, &hw_req->req); + chan_cur = 0; + do { + ret = send_scan_req(wvif, &hw_req->req, chan_cur); + if (ret > 0) + chan_cur += ret; + } while (ret > 0 && chan_cur < hw_req->req.n_channels); + mutex_unlock(&wvif->scan_lock); + mutex_unlock(&wvif->wdev->conf_mutex); + __ieee80211_scan_completed_compat(wvif->wdev->hw, ret < 0); +} + +int wfx_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_scan_request *hw_req) +{ + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + + WARN_ON(hw_req->req.n_channels > HIF_API_MAX_NB_CHANNELS); + wvif->scan_req = hw_req; + schedule_work(&wvif->scan_work); + return 0; +} + +void wfx_cancel_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif) +{ + struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv; + + wvif->scan_abort = true; + hif_stop_scan(wvif); +} + +void wfx_scan_complete(struct wfx_vif *wvif) +{ + complete(&wvif->scan_complete); +} diff --git a/drivers/net/wireless/silabs/wfx/scan.h b/drivers/net/wireless/silabs/wfx/scan.h new file mode 100644 index 000000000000..c7496a766478 --- /dev/null +++ b/drivers/net/wireless/silabs/wfx/scan.h @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Scan related functions. + * + * Copyright (c) 2017-2020, Silicon Laboratories, Inc. + * Copyright (c) 2010, ST-Ericsson + */ +#ifndef WFX_SCAN_H +#define WFX_SCAN_H + +#include + +struct wfx_dev; +struct wfx_vif; + +void wfx_hw_scan_work(struct work_struct *work); +int wfx_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + struct ieee80211_scan_request *req); +void wfx_cancel_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif); +void wfx_scan_complete(struct wfx_vif *wvif); + +#endif /* WFX_SCAN_H */