From patchwork Wed Aug 4 04:40:21 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: 491782 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, URIBL_BLOCKED, 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 DEACFC4338F for ; Wed, 4 Aug 2021 04:40:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD3B6610FD for ; Wed, 4 Aug 2021 04:40:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233816AbhHDEkx (ORCPT ); Wed, 4 Aug 2021 00:40:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33916 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231767AbhHDEkw (ORCPT ); Wed, 4 Aug 2021 00:40:52 -0400 Received: from mail-pj1-x1035.google.com (mail-pj1-x1035.google.com [IPv6:2607:f8b0:4864:20::1035]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8BFBEC0613D5 for ; Tue, 3 Aug 2021 21:40:39 -0700 (PDT) Received: by mail-pj1-x1035.google.com with SMTP id g23-20020a17090a5797b02901765d605e14so1823901pji.5 for ; Tue, 03 Aug 2021 21:40:39 -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=wcDVWmgpsQDZsXk+HDST9mB/mi6wxTRLYW/SvZIXL4I=; b=MeRSUV6RmI8J6fiJkr8lx099XzvxB8GIVgjhKXIBSDVaYdDHvrWiDCrTsIxH3oedhC whYxvqm/WxR/Ycim3koJNP0+URfNuHPlzUhljGTKEYOakQt0chkGpjwzLrNcFFzEINQ/ u+RwKBNB2d5auot7arsOahwsNIKkZy8ZD9ninQt8RIzUIZlHRN0/xoggcVfSu4h9alp8 zJ6NzEHKtNHx41pUs299Yx2mh3B6jO3nRJfP8lKpGTZJjP9ObHjfPwsBR7D0hfXMght/ Q412XAgsj9vOGahneugXgspY/kMbqF8M5BVx+fAilf7gnrdHTIy9JYLtS/lBiut8E6YS zhOQ== 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=wcDVWmgpsQDZsXk+HDST9mB/mi6wxTRLYW/SvZIXL4I=; b=Nwkhm0bLcwuFx/lJChb1NMZp84CCNcJ0qibxUhjpHWLPhHm3QmY0FmSP6tUlDtqTZD yEUHGRQOiKMSQq+UyozcduQZeJeZ5j7NM+aIlYKqJ/QaLT48lVpu2ca/tJSqXR21q6j7 2rQZJisiJTZlgGEEPwfFUCaHUYGW5dWxWBPAiky0rn+wc3uTLVIaH14zZopCL4fPixr2 Bgeb7+U/0URHrPjDzne+CuPUMNvzY+SLPGJhjsfHuHSgRMb1pmdoVTMRk0CNya4JAvfM rReNSsuSC9eDKw+kpUMRHRvuEPKMxYrvXy0Ju5BNs1OHPAoLqERcojif+3o1XLLAW6d4 DUwQ== X-Gm-Message-State: AOAM5308tpfdstl98WPLZ8XFdhSR5c+bMpisuP2xK2yTcHJV+mJyqLoX Trx6FRQHefBTCTtDYPM8rBgu+F7MezU= X-Google-Smtp-Source: ABdhPJwCILCf9Xdk2a1L7yAYCPpdbuNiMtlR8f3+GYntJ7aMU6xK1O6im4TfLtsQbIrFR5g3TrYwJw== X-Received: by 2002:a63:5259:: with SMTP id s25mr1004339pgl.397.1628052038940; Tue, 03 Aug 2021 21:40:38 -0700 (PDT) Received: from localhost.localdomain ([2601:1c0:6a01:d830:12af:cd05:f7eb:e8f5]) by smtp.gmail.com with ESMTPSA id w2sm835478pjq.5.2021.08.03.21.40.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Aug 2021 21:40:37 -0700 (PDT) From: Tedd Ho-Jeong An To: linux-bluetooth@vger.kernel.org Cc: Tedd Ho-Jeong An Subject: [PATCH v6 01/12] Bluetooth: Add support hdev to allocate private data Date: Tue, 3 Aug 2021 21:40:21 -0700 Message-Id: <20210804044032.59729-2-hj.tedd.an@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210804044032.59729-1-hj.tedd.an@gmail.com> References: <20210804044032.59729-1-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 4abe3c494002..faffa7bfd85e 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -1223,10 +1223,21 @@ 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)