From patchwork Mon Mar 15 13:24:57 2021 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: 400843 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,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 4C2C8C432C3 for ; Mon, 15 Mar 2021 13:27:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F00464EFD for ; Mon, 15 Mar 2021 13:27:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231434AbhCON1X (ORCPT ); Mon, 15 Mar 2021 09:27:23 -0400 Received: from mail-co1nam11on2080.outbound.protection.outlook.com ([40.107.220.80]:9473 "EHLO NAM11-CO1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S231213AbhCON0Z (ORCPT ); Mon, 15 Mar 2021 09:26:25 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=OiwvgeDsS7tYjy/STDuylOBK7zPsB09kIuDBHP15QZuRUcBveL7M7MDgqFcdYpZpxB86b//TegnxVF2g3OB3DQJV08cZxhPocBUBkwP+nZANByBC2EZ2KjBuvS5yXVgvIUOfUOxAe1CPNuHvzqlxp7XF2X1T+8jfZGOu1QP2wH8i7y15/mxmY6sxeLvDGvfTuRqJ4fgi/I+ENZSutRoSLw4aXMZ16tOBY9BuHx5qy7eHjSzNqrFnb0DvnFn+/sfHY1E1ur/bc4NG4UBszNXO8hMBMoGZgiwinHWv/YsgGDRchRGny5kCGppnp8L+OWKUPrYFha5G7P9sjmsPeVnZow== 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=XLOlILZHl1+swJSIwchSBtKnDHyJG/1pxSDCPiyVRmU=; b=bno8I/uVsCZxswNxz57VbvmWZdMAnj4qhA5pdeBoN2d2qGm+VX95TKSPN9MC07hqOvyHH+CWxq5/mC7+MGXwO00foYj2fFu6HiIHeiOFs69ZDQmctkBG64bXlUWfwD+SKKu7Hs/7i6xEo2HhaJ1fdqSUCzNnb7pM9eenJXXgwr8+oI+SbfmkuCSR1t5AVVvD9eluLcyRxFU1yu322AZjfarCMA44R2WBPqOn/DMUn/kwDHRU4AGyZE44vFLf82WSSSFqwScYb3fhpTvwYi8F0tXEfhopTinOz5PEDr8mqzFHaIjdKD3wAOEApjQlb2J3mC7vF0cfzXQSXZ/OZQO+jQ== 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=XLOlILZHl1+swJSIwchSBtKnDHyJG/1pxSDCPiyVRmU=; b=QSQm0TiHeDHZspswo5JuxbiLXFv6WE1PuDd3hcYB80IV/XOWfxg06guNJ//jSGlODpHfA+UUU4JXghgYEY96ZpTwz2zb6hvRuT+hIGaFCs4JAeD6VzJ/CzNcvqSfkr7+khGU5FpsQCT9uvd+r8PMbKhA0BsBnNZEOM5C/Aj/csY= 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 SN6PR11MB3216.namprd11.prod.outlook.com (2603:10b6:805:c1::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3933.32; Mon, 15 Mar 2021 13:26:17 +0000 Received: from SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::41bc:5ce:dfa0:9701]) by SN6PR11MB2718.namprd11.prod.outlook.com ([fe80::41bc:5ce:dfa0:9701%7]) with mapi id 15.20.3933.032; Mon, 15 Mar 2021 13:26:17 +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?SsOpcsO0bWUg?= =?utf-8?q?Pouiller?= Subject: [PATCH v5 20/24] wfx: add scan.c/scan.h Date: Mon, 15 Mar 2021 14:24:57 +0100 Message-Id: <20210315132501.441681-21-Jerome.Pouiller@silabs.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210315132501.441681-1-Jerome.Pouiller@silabs.com> References: <20210315132501.441681-1-Jerome.Pouiller@silabs.com> X-Originating-IP: [2a01:e35:2435:66a0:544b:f17b:7ae8:fb7] X-ClientProxiedBy: SN4PR0801CA0014.namprd08.prod.outlook.com (2603:10b6:803:29::24) 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 (2a01:e35:2435:66a0:544b:f17b:7ae8:fb7) by SN4PR0801CA0014.namprd08.prod.outlook.com (2603:10b6:803:29::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3933.32 via Frontend Transport; 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+ + 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..6d70717f2bf7 --- /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