From patchwork Thu Jul 29 18:35:50 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: 488860 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 1972FC4320A for ; Thu, 29 Jul 2021 18:36:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F24326023B for ; Thu, 29 Jul 2021 18:36:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231741AbhG2SgK (ORCPT ); Thu, 29 Jul 2021 14:36:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37926 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229906AbhG2SgK (ORCPT ); Thu, 29 Jul 2021 14:36:10 -0400 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DEB55C061765 for ; Thu, 29 Jul 2021 11:36:05 -0700 (PDT) Received: by mail-pl1-x631.google.com with SMTP id t21so7954652plr.13 for ; Thu, 29 Jul 2021 11:36:05 -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=QRBu23cC05oZC7YzojFP1u2rrtum1yT82Z4h3SR/m6Y=; b=Av3uuB19nThx4B6LOebg8oU1GlQ50FzRWCuU0o7/gN4n1FLr2s5vCqPzm9mRIM+Cro 4x8i2poglTTdPrFzt24wgIH548pHb/TBZrz4RKAR1vkXPPhk2bNS2PUQAVIwD7MP9U7o sMSyRpVifchUdeY3dJuwOdvS7AjsKdB3JrlTIPw9IYwSp/5ncj5obSViCsLeg8LwqaZJ AFzAngcX8EcgZVo6sKNlJn9vX9ziGafjGyzC3FuzApUuw4FpDVFV3eGkojgNSxGhqbJC XOPbCHcGV9GWThMo4IsHfs9PSVxdYG87e5zxhRWoP2A1i5QHOufRdev/qO/eveT1RwW8 LFig== 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=QRBu23cC05oZC7YzojFP1u2rrtum1yT82Z4h3SR/m6Y=; b=ucdg/0aSLhycI76xGuI/2pUakLrODgCYiGmIctogYGIjN4zaG9kwfdFrDclJQGdmgC 0TatmVVggcMbd6aexn0aZUtrRkhuaTJKVPfZwn6OeclXtKrrq/XKm0w3NESNl4TcinVe 6HKQaty+pxOWImEamgZtovXkdwse/OeRTP+RmGHdfcwmHwCRyZry2maD4Z0LGFxtZ079 TXw5GvRtZbAfOKPKEbFaUyAGTqukceHr48XyHAG05S0f5DTnEPN5SvMYmcpaMuhOhPdG SmDzY+I6jqkjOTpNl5f9+//jIujWz0w7CdQg/mQIHFfKvE0505Mla0/Sv3H/0A+udnWN EAWw== X-Gm-Message-State: AOAM531kesYlaDk0SN5aE81bcyoz5FHBW6oxvQY4EfMrl7fQGNA4L0bM 3ay/x+3RrglD6QhxgKuEHSer2fSbEIk= X-Google-Smtp-Source: ABdhPJxpQLfFQh2RCiDVb+TB7EZRsOdqt1nAXRxuax6y7+M0D4k6M0oxADSeN4FGtR7/IjnVUqBikQ== X-Received: by 2002:a63:4e4a:: with SMTP id o10mr1122357pgl.350.1627583765277; Thu, 29 Jul 2021 11:36:05 -0700 (PDT) Received: from localhost.localdomain ([2601:1c0:6a01:d830:6349:1ee2:dda3:7891]) by smtp.gmail.com with ESMTPSA id i1sm10943130pjs.31.2021.07.29.11.36.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 29 Jul 2021 11:36:04 -0700 (PDT) From: Tedd Ho-Jeong An To: linux-bluetooth@vger.kernel.org Cc: Tedd Ho-Jeong An Subject: [PATCH v5 01/11] Bluetooth: Add support hdev to allocate private data Date: Thu, 29 Jul 2021 11:35:50 -0700 Message-Id: <20210729183600.281586-2-hj.tedd.an@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210729183600.281586-1-hj.tedd.an@gmail.com> References: <20210729183600.281586-1-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 a53e94459ecd..7ef0e5644e87 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 2560ed2f144d..ae6f5f26db6a 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)