From patchwork Tue Aug 27 14:05:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luiz Augusto von Dentz X-Patchwork-Id: 824233 Received: from mail-oo1-f51.google.com (mail-oo1-f51.google.com [209.85.161.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9F7091E487 for ; Tue, 27 Aug 2024 14:05:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.161.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724767535; cv=none; b=Kbdxz32I+wY9nk0ggOGqcNLDJa2J+0yY5j+HQaVTJ9pTaRx8SR365u09OGTcvrAARo0lmpf+TxG03UMiX4oTRwU5ysyJWxxxgZcnxaXR3QqbblODlQur5E8ohR3RmSrQsJuGRC/OWw0bMt874w0XL839VM6HbO/65rogTlOnpD4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724767535; c=relaxed/simple; bh=i3bc9JwCIAY/CzUsnC+hGW60iuX8efZwwzQrv5oLSOE=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=s1cSzauspND3bsI5nVmx/2s3+v/2az5AXC1sTEwpYyc5OB7rT7iDIjFivH+PAIWB7TjAsNxQIJN3SSvvWB848jw5jai00y6ZTnz3d+UV7oMgtiBThv6e65VO9wm7+MMfYBJ7FK6Z7VkEI0VAT2aGqXmPr8HVocGyk3fJjA1yAp0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=JmbgWrFN; arc=none smtp.client-ip=209.85.161.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="JmbgWrFN" Received: by mail-oo1-f51.google.com with SMTP id 006d021491bc7-5da6865312eso4550875eaf.3 for ; Tue, 27 Aug 2024 07:05:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1724767532; x=1725372332; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:from:to:cc:subject:date:message-id:reply-to; bh=MIBJlvoJyQt5yhkogIg2C4Mf00EV4uxKnogdf+CUEbo=; b=JmbgWrFNAIw7uToX26hMqzhHmn0fZg2eQtcAjz3b0PyQIBXgz+Wm4ZqlQX8aSnP8Ff +f+vqM0ovxMj/zk78uZNMLAwXe7t+JGopJcH3QbnlvaGuyiID1FGawb4acB1eEjUX4gl Gcwi08FI5h8SyFlQvKN61UANDzHfGc2gMzdBol/1WzouE7WeIouqYkezflkrL0sU+MMY G818qKJEL9WumKViP+F89RivW4z1mzNG6r6jebyDLBD38VbuO5DjicTaY4eHPnmO8HdM IVZ5zdkYl3FM4FTcZ7MlIs85n0WmEkIv8K8rdlCbsnFQj+Gq+qIEufDISWCYknh3YNZJ OKaw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1724767532; x=1725372332; h=content-transfer-encoding:mime-version:message-id:date:subject:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=MIBJlvoJyQt5yhkogIg2C4Mf00EV4uxKnogdf+CUEbo=; b=VwBq6VORu3bon5x5L8fRgIAjhx6SzDXnd32vA3AhW+INLfB1eTmtf1cFHF/LKQ/UEo W80QnlArrFCp9p6yGNlLEjrxT29pU9zcmMx5E6DshzBbpsMEhLuYSr9MlnpwY/dL538F X6lvUO4wIq0fgyFL7GRpUrYojatfV1Xo2oYyvL/1DSeSX0tYg3EkgJPyDUFhmDi+LaEt UiBcZpV5bNGy07IsWKWI1vItYScp93Lu6ZAmqjrTwe3alRv4T77xKh9i0a/UM5ziGjiy UB8Adt9I+t9WkzQTD38na8m+t0CRsea8qtBmaq5c1mHceYs0hp1Ce4KKnglro4fxXkUu CksA== X-Gm-Message-State: AOJu0Yzb77tC/BvD4oifi38mI+9ohBIpY1nGI9XQnNkIS9AvEMQ++hf4 s12SpdV5JZjHdNr/IrP7DcYcSkgGrwlzpzr3f+nTDM8sTs7CuFAcJ4oTgg== X-Google-Smtp-Source: AGHT+IHavg8rbb0iXp5zES6Dr4L980A6jcKqekp47csax8jZOvNJ7yI8I4pH8Npin+uu30xpRo83DQ== X-Received: by 2002:a05:6358:60c4:b0:1b5:a139:4d92 with SMTP id e5c5f4694b2df-1b5ebefa5b3mr401417455d.3.1724767531668; Tue, 27 Aug 2024 07:05:31 -0700 (PDT) Received: from lvondent-mobl5.. (syn-107-146-107-067.res.spectrum.com. [107.146.107.67]) by smtp.gmail.com with ESMTPSA id ada2fe7eead31-498e48f8c7esm1539433137.28.2024.08.27.07.05.29 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Aug 2024 07:05:30 -0700 (PDT) From: Luiz Augusto von Dentz To: linux-bluetooth@vger.kernel.org Subject: [PATCH v3 1/2] Bluetooth: hci_sync: Introduce hci_cmd_sync_run/hci_cmd_sync_run_once Date: Tue, 27 Aug 2024 10:05:28 -0400 Message-ID: <20240827140529.635522-1-luiz.dentz@gmail.com> X-Mailer: git-send-email 2.46.0 Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Luiz Augusto von Dentz This introduces hci_cmd_sync_run/hci_cmd_sync_run_once which acts like hci_cmd_sync_queue/hci_cmd_sync_queue_once but runs immediately when already on hdev->cmd_sync_work context. Signed-off-by: Luiz Augusto von Dentz --- include/net/bluetooth/hci_sync.h | 4 +++ net/bluetooth/hci_sync.c | 42 ++++++++++++++++++++++++++++++-- 2 files changed, 44 insertions(+), 2 deletions(-) diff --git a/include/net/bluetooth/hci_sync.h b/include/net/bluetooth/hci_sync.h index 75e052909b5f..f3052cb252ef 100644 --- a/include/net/bluetooth/hci_sync.h +++ b/include/net/bluetooth/hci_sync.h @@ -73,6 +73,10 @@ int hci_cmd_sync_queue(struct hci_dev *hdev, hci_cmd_sync_work_func_t func, void *data, hci_cmd_sync_work_destroy_t destroy); int hci_cmd_sync_queue_once(struct hci_dev *hdev, hci_cmd_sync_work_func_t func, void *data, hci_cmd_sync_work_destroy_t destroy); +int hci_cmd_sync_run(struct hci_dev *hdev, hci_cmd_sync_work_func_t func, + void *data, hci_cmd_sync_work_destroy_t destroy); +int hci_cmd_sync_run_once(struct hci_dev *hdev, hci_cmd_sync_work_func_t func, + void *data, hci_cmd_sync_work_destroy_t destroy); struct hci_cmd_sync_work_entry * hci_cmd_sync_lookup_entry(struct hci_dev *hdev, hci_cmd_sync_work_func_t func, void *data, hci_cmd_sync_work_destroy_t destroy); diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c index e79cd40bd079..5533e6f561b3 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -112,7 +112,7 @@ static void hci_cmd_sync_add(struct hci_request *req, u16 opcode, u32 plen, skb_queue_tail(&req->cmd_q, skb); } -static int hci_cmd_sync_run(struct hci_request *req) +static int hci_req_sync_run(struct hci_request *req) { struct hci_dev *hdev = req->hdev; struct sk_buff *skb; @@ -169,7 +169,7 @@ struct sk_buff *__hci_cmd_sync_sk(struct hci_dev *hdev, u16 opcode, u32 plen, hdev->req_status = HCI_REQ_PEND; - err = hci_cmd_sync_run(&req); + err = hci_req_sync_run(&req); if (err < 0) return ERR_PTR(err); @@ -782,6 +782,44 @@ int hci_cmd_sync_queue_once(struct hci_dev *hdev, hci_cmd_sync_work_func_t func, } EXPORT_SYMBOL(hci_cmd_sync_queue_once); +/* Run HCI command: + * + * - hdev must be running + * - if on cmd_sync_work then run immediately otherwise queue + */ +int hci_cmd_sync_run(struct hci_dev *hdev, hci_cmd_sync_work_func_t func, + void *data, hci_cmd_sync_work_destroy_t destroy) +{ + /* Only queue command if hdev is running which means it had been opened + * and is either on init phase or is already up. + */ + if (!test_bit(HCI_RUNNING, &hdev->flags)) + return -ENETDOWN; + + /* If on cmd_sync_work then run immediately otherwise queue */ + if (current_work() == &hdev->cmd_sync_work) + return func(hdev, data); + + return hci_cmd_sync_submit(hdev, func, data, destroy); +} +EXPORT_SYMBOL(hci_cmd_sync_run); + +/* Run HCI command entry once: + * + * - Lookup if an entry already exist and only if it doesn't creates a new entry + * and run it. + * - if on cmd_sync_work then run immediately otherwise queue + */ +int hci_cmd_sync_run_once(struct hci_dev *hdev, hci_cmd_sync_work_func_t func, + void *data, hci_cmd_sync_work_destroy_t destroy) +{ + if (hci_cmd_sync_lookup_entry(hdev, func, data, destroy)) + return 0; + + return hci_cmd_sync_run(hdev, func, data, destroy); +} +EXPORT_SYMBOL(hci_cmd_sync_run_once); + /* Lookup HCI command entry: * * - Return first entry that matches by function callback or data or