From patchwork Thu Aug 5 00:32:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tedd Ho-Jeong An X-Patchwork-Id: 492364 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 DD730C432BE for ; Thu, 5 Aug 2021 00:32:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C726D610CC for ; Thu, 5 Aug 2021 00:32:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236220AbhHEAcj (ORCPT ); Wed, 4 Aug 2021 20:32:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50780 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236205AbhHEAci (ORCPT ); Wed, 4 Aug 2021 20:32:38 -0400 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9639EC0613D5 for ; Wed, 4 Aug 2021 17:32:24 -0700 (PDT) Received: by mail-pj1-x102f.google.com with SMTP id e2-20020a17090a4a02b029016f3020d867so6055027pjh.3 for ; Wed, 04 Aug 2021 17:32:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=eotsLWc+Kd3aMTO7f8LyPFVIntd2RMJxjiOsBnNyIbU=; b=vN+dtrd5fQyzZlqsxR2vtSp+Odp9yxlCeI9dJ2QyFtdzGJZZUrlM26/xNFjUdfsJ6i UP4rf/2S1J9s0x2ke/kFK2NqVomSVtIMiTw2m0IarzEx3eHKxPFk9cPq6Aq3mJ/1p1uQ RLYFaKjjolrrQ4PVAiwWWCGBmtxtijkrBnDNl4x9XpClx1cNfgridzF0xv51beZNlvxi 8KiQBxP26rLCtN7wu9cpgUZViCp7pX3V657vzUZbyKAUMSv0UDRna1KoS2ijg3sm08uw /Wn/IHvYkiIPZkGzKj9gNxITzEd4XbX9dVrjuFJpyMlFaSe31i6SgYBrqnQOwHTXWufr UtoQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=eotsLWc+Kd3aMTO7f8LyPFVIntd2RMJxjiOsBnNyIbU=; b=RS8jDtqcrIVatszdRoW9lnLsaFhCIETTZRRK2P7xGZ+oW/c5loFq5KY8QCgCoDBPtI YVH0D1aaDefHCvD7YnfwMWmXCkbkBhoW+Qjk7CJopRe0WHPwBFUG3VRwysz5ApHSO4xo krB6kC5XEgj1B5e7MSZNW4nLMxTIfoL5FkVIC8O69X2IYyn5vPLDFYiaR0s4B/McmJ0U z9gcOtCUNgT9Ze7mpp8XMzvQ09u1Ifnblv1fQER4rvWlM9wFp+Ww3QGFOj5OPcT16Y7s 2tHbR7/8iGgHjZRp7x939obC5hwOaxnDA8FxtD97YcmFKUhHgRt0I1jc33ZweymFKWrv a4OA== X-Gm-Message-State: AOAM532L2565QrDuzUTDr3T2Gf9+TuqqA4cDm97hLyUGvc3+l2U+ObNl jR8fHqTf71CwNHNvoCnPywrxGFsqFu8= X-Google-Smtp-Source: ABdhPJzzwqzz3hVOnd9m2RF2AHbqsZJHH16evYycnBlmF2B8n8aYXbvMiix5W2iIn+UxMRU5Q+DfQA== X-Received: by 2002:a05:6a00:1311:b029:3b2:87fe:a598 with SMTP id j17-20020a056a001311b02903b287fea598mr2050251pfu.74.1628123543988; Wed, 04 Aug 2021 17:32:23 -0700 (PDT) Received: from localhost.localdomain ([2601:1c0:6a01:d830:e0b8:5332:84:7056]) by smtp.gmail.com with ESMTPSA id q4sm4761787pgv.16.2021.08.04.17.32.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Aug 2021 17:32:23 -0700 (PDT) From: Tedd Ho-Jeong An To: linux-bluetooth@vger.kernel.org Cc: Tedd Ho-Jeong An Subject: [PATCH v7 01/12] Bluetooth: Add support hdev to allocate private data Date: Wed, 4 Aug 2021 17:32:08 -0700 Message-Id: <20210805003219.23221-2-hj.tedd.an@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210805003219.23221-1-hj.tedd.an@gmail.com> References: <20210805003219.23221-1-hj.tedd.an@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org From: Tedd Ho-Jeong An This patch adds support hdev to allocate extra size for private data. The size of private data is specified in the hdev_alloc_size(priv_size) and the allocated buffer can be accessed with hci_get_priv(hdev). Signed-off-by: Tedd Ho-Jeong An --- include/net/bluetooth/hci_core.h | 13 ++++++++++++- net/bluetooth/hci_core.c | 13 ++++++++++--- 2 files changed, 22 insertions(+), 4 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index b011eeea28c3..a7d06d7da602 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -1224,10 +1224,21 @@ static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) dev_set_drvdata(&hdev->dev, data); } +static inline void *hci_get_priv(struct hci_dev *hdev) +{ + return (char *)hdev + sizeof(*hdev); +} + struct hci_dev *hci_dev_get(int index); struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); -struct hci_dev *hci_alloc_dev(void); +struct hci_dev *hci_alloc_dev_priv(int sizeof_priv); + +static inline struct hci_dev *hci_alloc_dev(void) +{ + return hci_alloc_dev_priv(0); +} + void hci_free_dev(struct hci_dev *hdev); int hci_register_dev(struct hci_dev *hdev); void hci_unregister_dev(struct hci_dev *hdev); diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c index 2b78e1336c53..cb2e9e513907 100644 --- a/net/bluetooth/hci_core.c +++ b/net/bluetooth/hci_core.c @@ -3751,11 +3751,18 @@ static int hci_suspend_notifier(struct notifier_block *nb, unsigned long action, } /* Alloc HCI device */ -struct hci_dev *hci_alloc_dev(void) +struct hci_dev *hci_alloc_dev_priv(int sizeof_priv) { struct hci_dev *hdev; + unsigned int alloc_size; - hdev = kzalloc(sizeof(*hdev), GFP_KERNEL); + alloc_size = sizeof(*hdev); + if (sizeof_priv) { + /* Fixme: May need ALIGN-ment? */ + alloc_size += sizeof_priv; + } + + hdev = kzalloc(alloc_size, GFP_KERNEL); if (!hdev) return NULL; @@ -3869,7 +3876,7 @@ struct hci_dev *hci_alloc_dev(void) return hdev; } -EXPORT_SYMBOL(hci_alloc_dev); +EXPORT_SYMBOL(hci_alloc_dev_priv); /* Free HCI device */ void hci_free_dev(struct hci_dev *hdev)