From patchwork Thu May 9 20:59:04 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: 796418 Received: from mail-vs1-f42.google.com (mail-vs1-f42.google.com [209.85.217.42]) (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 88D95D2E6 for ; Thu, 9 May 2024 20:59:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.217.42 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715288350; cv=none; b=YbwD+Zt7KNulgLy7zLotAgnmKor2Tad8KKqEyXt5Zr6wZUlG4mnGsBPCSCZAzydr8nHT1brUSKXO2RmlB/NfUV2eztNNQWwOMbW3S5MjoI6OPjr9wUr67JBGHqB0C9yRaHf2J+tNe4bI8/PqYz2CdV565TWCmI89J+gGMq2TFwA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715288350; c=relaxed/simple; bh=KfhJ3MfCK4gpotvqoTUN1qrXO+exWpAqzuWma9SReGQ=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=Y8rk64iEKnuT6oevpm843a5/uE765p2ppTCbn+eRRnxVbOq6fUYLqLbwcuRNJEh2Z4Gv8eUpJyqKuYSDHvJLDOLmdoiR5WPYDbWuMmEgGYojRv62cuWEb9wjox+5/NQgrjS6L+sJd07rJ9I7QcjEuAacWCV0YPNIkPVW6694tNI= 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=G68L8g6K; arc=none smtp.client-ip=209.85.217.42 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="G68L8g6K" Received: by mail-vs1-f42.google.com with SMTP id ada2fe7eead31-47f01423c30so392749137.2 for ; Thu, 09 May 2024 13:59:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1715288347; x=1715893147; 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=kOfyYJIoupNSEo9O4amkSBenQ9g7P974dxL55eociWk=; b=G68L8g6KFPyFKD4sG3w/3zfC7aT/bLiXWNpc1n8gRI6RCsiEKNd4Uqt8ABrhIxZhq9 6XADLMSNyWevvmxHMLkrHQ15WDuQO7xTZCBxjohcaezaNvXlkO/s9a+07cMQGgbcHcxC CR0VQKgm72yLcL8VI48vj7sMpcvh8L3QeqzU/yQNQagkdXPBG256J17Fj2XhX8XkpL3g qKvAHAk1mwtV5xm7gzoyODRpiTckNjgLjISZgzhwvhE2fiLLH5H0Tn/CRkh1g2U+ebzS cu5j+a316U3rGOmNbNhMWpnADKTmxOpSDcjs7XydHy85e9Fb6xwQqLRo0hooc7qXVo9G V3CA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1715288347; x=1715893147; 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=kOfyYJIoupNSEo9O4amkSBenQ9g7P974dxL55eociWk=; b=PxHVFVYtwfP31RlBAYg53Z3AactAeHfHdcZcUZAwRAiIry2/KP8u7RdsfrycAVH9Kv BzyLyRf7PpyVTVdN6I+hUgxnh6QknbOBjoAxZns0goIKPDVExsPc0Drv95RKmXEbeEnA IKyibl3a0N+qnbs2j2I0ul1NHHvbIMuU174NepGomDW68JRYr9yCmrT8PvqhoGuNfgzH mRZT6BwYU4hDD7i/LM/NB4t5oZ9JyYbk93dE+Wn+L6+QMBbot2UmBMCD4yP7VIOWRPSq 4xV/2/gJhanG0hB79fggkB2inxCvI/1/TQVX9XlmBu5oeMHx2Lrotj83L+MWx+E8vPZ5 x/hg== X-Gm-Message-State: AOJu0YyhqFx3iHS8s6lZhhn/uRqvnc/n4LBNW+3XPV2/a/NBewKlrufs DulmVKmvVfh6MUu8lwtWYrCB5tIAVTBSfzQfMzAmVwJhRvt3J3u8SdZS7A== X-Google-Smtp-Source: AGHT+IFm1Zqjltn+mt0zGFZVH+LVg3SQ7WaRRG3dLbselkPXf3TlE/i5TrExM6JOYJbao6DZWaRKyA== X-Received: by 2002:a05:6102:14aa:b0:47f:2c10:24e2 with SMTP id ada2fe7eead31-48077e5bfaemr1237880137.28.1715288346630; Thu, 09 May 2024 13:59:06 -0700 (PDT) Received: from lvondent-mobl4.. (syn-107-146-107-067.res.spectrum.com. [107.146.107.67]) by smtp.gmail.com with ESMTPSA id ada2fe7eead31-4806cb6c492sm282866137.14.2024.05.09.13.59.05 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 May 2024 13:59:05 -0700 (PDT) From: Luiz Augusto von Dentz To: linux-bluetooth@vger.kernel.org Subject: [RFC v1] Bluetooth: MGMT: Make MGMT_OP_LOAD_CONN_PARAM update existing connection Date: Thu, 9 May 2024 16:59:04 -0400 Message-ID: <20240509205904.1275416-1-luiz.dentz@gmail.com> X-Mailer: git-send-email 2.44.0 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 makes MGMT_OP_LOAD_CONN_PARAM update existing connection by dectecting the request is just for one connection, parameters already exists and there is a connection. Since this is a new behavior the revision is also updated to enable userspace to detect it. Signed-off-by: Luiz Augusto von Dentz --- net/bluetooth/hci_sync.c | 18 +++++++++++++++ net/bluetooth/mgmt.c | 47 ++++++++++++++++++++++++++++++++++++++-- 2 files changed, 63 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c index 891cae8a30da..9f8ef175c251 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -6712,3 +6712,21 @@ int hci_cancel_connect_sync(struct hci_dev *hdev, struct hci_conn *conn) return -ENOENT; } + +int hci_le_conn_update_sync(struct hci_dev *hdev, struct hci_conn *conn, + struct hci_conn_params *params) +{ + struct hci_cp_le_conn_update cp; + + memset(&cp, 0, sizeof(cp)); + cp.handle = cpu_to_le16(conn->handle); + cp.conn_interval_min = cpu_to_le16(params->conn_min_interval); + cp.conn_interval_max = cpu_to_le16(params->conn_max_interval); + cp.conn_latency = cpu_to_le16(params->conn_latency); + cp.supervision_timeout = cpu_to_le16(params->supervision_timeout); + cp.min_ce_len = cpu_to_le16(0x0000); + cp.max_ce_len = cpu_to_le16(0x0000); + + return __hci_cmd_sync_status(hdev, HCI_OP_LE_CONN_UPDATE, + sizeof(cp), &cp, HCI_CMD_TIMEOUT); +} diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 64e66d911c74..7e81eaddba85 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -42,7 +42,7 @@ #include "aosp.h" #define MGMT_VERSION 1 -#define MGMT_REVISION 22 +#define MGMT_REVISION 23 static const u16 mgmt_commands[] = { MGMT_OP_READ_INDEX_LIST, @@ -7874,6 +7874,18 @@ static int remove_device(struct sock *sk, struct hci_dev *hdev, return err; } +static int conn_update_sync(struct hci_dev *hdev, void *data) +{ + struct hci_conn_params *params = data; + + conn = hci_conn_hash_lookup_le(hdev, params->addr.bdaddr, + params->addr_type); + if (!conn) + return -ECANCELED + + return hci_le_conn_update_sync(hdev, conn, params); +} + static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data, u16 len) { @@ -7907,13 +7919,15 @@ static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data, hci_dev_lock(hdev); - hci_conn_params_clear_disabled(hdev); + if (i > 1) + hci_conn_params_clear_disabled(hdev); for (i = 0; i < param_count; i++) { struct mgmt_conn_param *param = &cp->params[i]; struct hci_conn_params *hci_param; u16 min, max, latency, timeout; u8 addr_type; + bool update; bt_dev_dbg(hdev, "Adding %pMR (type %u)", ¶m->addr.bdaddr, param->addr.type); @@ -7940,6 +7954,19 @@ static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data, continue; } + /* Detect when the loading is for an existing parameter then + * attempt to trigger the connection update procedure. + */ + if (!i && params == 1) { + hci_param = hci_conn_params_lookup(hdev, + ¶m->addr.bdaddr, + addr_type); + if (hci_param) + update = true; + else + hci_conn_params_clear_disabled(hdev); + } + hci_param = hci_conn_params_add(hdev, ¶m->addr.bdaddr, addr_type); if (!hci_param) { @@ -7951,6 +7978,22 @@ static int load_conn_param(struct sock *sk, struct hci_dev *hdev, void *data, hci_param->conn_max_interval = max; hci_param->conn_latency = latency; hci_param->supervision_timeout = timeout; + + if (update) { + struct hci_conn *conn; + + conn = hci_conn_hash_lookup_le(hdev, + params->addr.bdaddr, + addr_type); + if (conn && conn->role == HCI_ROLE_MASTER && + (conn->le_conn_min_interval != min || + conn->le_conn_max_interval != max || + conn->le_conn_latency != latency || + conn->le_supervision_timeout != timeout)) + hci_cmd_sync_queue(hdev, conn_update_sync, + hci_params, NULL); + } + } } hci_dev_unlock(hdev);