From patchwork Wed Jun 30 08:08:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "K, Kiran" X-Patchwork-Id: 12351559 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=-16.8 required=3.0 tests=BAYES_00, 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 0A6CBC11F68 for ; Wed, 30 Jun 2021 08:04:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DB22961D05 for ; Wed, 30 Jun 2021 08:04:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233289AbhF3IGg (ORCPT ); Wed, 30 Jun 2021 04:06:36 -0400 Received: from mga07.intel.com ([134.134.136.100]:5410 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233230AbhF3IGf (ORCPT ); Wed, 30 Jun 2021 04:06:35 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10030"; a="272164669" X-IronPort-AV: E=Sophos;i="5.83,311,1616482800"; d="scan'208";a="272164669" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Jun 2021 01:04:07 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.83,311,1616482800"; d="scan'208";a="643997998" Received: from intel-lenovo-legion-y540-15irh-pg0.iind.intel.com ([10.224.186.95]) by fmsmga005.fm.intel.com with ESMTP; 30 Jun 2021 01:04:05 -0700 From: Kiran K To: linux-bluetooth@vger.kernel.org Cc: Kiran K Subject: [PATCH v10 10/10] Bluetooth: Add offload feature under experimental flag Date: Wed, 30 Jun 2021 13:38:07 +0530 Message-Id: <20210630080807.12600-10-kiran.k@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210630080807.12600-1-kiran.k@intel.com> References: <20210630080807.12600-1-kiran.k@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Allow user level process to enable / disable codec offload feature through mgmt interface. By default offload codec feature is disabled. Signed-off-by: Kiran K Reviewed-by: Chethan T N Reviewed-by: Srivatsa Ravishankar --- * changes in v10: - new patch added to place offload codec feature under experimental flag include/net/bluetooth/hci.h | 4 ++ net/bluetooth/mgmt.c | 106 +++++++++++++++++++++++++++++++++++- net/bluetooth/sco.c | 10 ++++ 3 files changed, 119 insertions(+), 1 deletion(-) diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index e20318854900..5ca98d9f64dd 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -331,6 +331,10 @@ enum { HCI_CMD_PENDING, HCI_FORCE_NO_MITM, +#if IS_ENABLED(CONFIG_BT_OFFLOAD_CODECS) + HCI_OFFLOAD_CODECS_ENABLED, +#endif + __HCI_NUM_FLAGS, }; diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 3663f880df11..d7be85eb52e7 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -3791,6 +3791,14 @@ static const u8 debug_uuid[16] = { }; #endif +#if IS_ENABLED(CONFIG_BT_OFFLOAD_CODECS) +/* a6695ace-ee7f-4fb9-881a-5fac66c629af */ +static const u8 offload_codecs_uuid[16] = { + 0xaf, 0x29, 0xc6, 0x66, 0xac, 0x5f, 0x1a, 0x88, + 0xb9, 0x4f, 0x7f, 0xee, 0xce, 0x5a, 0x69, 0xa6, +}; +#endif + /* 671b10b5-42c0-4696-9227-eb28d1b049d6 */ static const u8 simult_central_periph_uuid[16] = { 0xd6, 0x49, 0xb0, 0xd1, 0x28, 0xeb, 0x27, 0x92, @@ -3806,7 +3814,7 @@ static const u8 rpa_resolution_uuid[16] = { static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev, void *data, u16 data_len) { - char buf[62]; /* Enough space for 3 features */ + char buf[82]; /* Enough space for 4 features: 2 + 20 * 4 */ struct mgmt_rp_read_exp_features_info *rp = (void *)buf; u16 idx = 0; u32 flags; @@ -3850,6 +3858,28 @@ static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev, idx++; } +#if IS_ENABLED(CONFIG_BT_OFFLOAD_CODECS) + if (hdev) { + if (hdev->get_data_path_id) { + /* BIT(0): indicating if offload codecs are + * supported by controller. + */ + flags = BIT(0); + + /* BIT(1): indicating if codec offload feature + * is enabled. + */ + if (hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) + flags |= BIT(1); + } else { + flags = 0; + } + memcpy(rp->features[idx].uuid, offload_codecs_uuid, 16); + rp->features[idx].flags = cpu_to_le32(flags); + idx++; + } +#endif + rp->feature_count = cpu_to_le16(idx); /* After reading the experimental features information, enable @@ -3892,6 +3922,23 @@ static int exp_debug_feature_changed(bool enabled, struct sock *skip) } #endif +#if IS_ENABLED(CONFIG_BT_OFFLOAD_CODECS) +static int exp_offload_codec_feature_changed(bool enabled, struct sock *skip) +{ + struct mgmt_ev_exp_feature_changed ev; + + BT_INFO("enabled %d", enabled); + + memset(&ev, 0, sizeof(ev)); + memcpy(ev.uuid, offload_codecs_uuid, 16); + ev.flags = cpu_to_le32(enabled ? BIT(0) : 0); + + return mgmt_limited_event(MGMT_EV_EXP_FEATURE_CHANGED, NULL, + &ev, sizeof(ev), + HCI_MGMT_EXP_FEATURE_EVENTS, skip); +} +#endif + static int set_exp_feature(struct sock *sk, struct hci_dev *hdev, void *data, u16 data_len) { @@ -4038,6 +4085,63 @@ static int set_exp_feature(struct sock *sk, struct hci_dev *hdev, return err; } +#if IS_ENABLED(CONFIG_BT_OFFLOAD_CODECS) + if (!memcmp(cp->uuid, offload_codecs_uuid, 16)) { + bool val, changed; + int err; + + /* Command requires to use a valid controller index */ + if (!hdev) + return mgmt_cmd_status(sk, MGMT_INDEX_NONE, + MGMT_OP_SET_EXP_FEATURE, + MGMT_STATUS_INVALID_INDEX); + + /* Parameters are limited to a single octet */ + if (data_len != MGMT_SET_EXP_FEATURE_SIZE + 1) + return mgmt_cmd_status(sk, hdev->id, + MGMT_OP_SET_EXP_FEATURE, + MGMT_STATUS_INVALID_PARAMS); + + /* Only boolean on/off is supported */ + if (cp->param[0] != 0x00 && cp->param[0] != 0x01) + return mgmt_cmd_status(sk, hdev->id, + MGMT_OP_SET_EXP_FEATURE, + MGMT_STATUS_INVALID_PARAMS); + + val = !!cp->param[0]; + changed = (val != hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)); + + if (!hdev->get_data_path_id) { + bt_dev_info(hdev, "offload codecs not supported"); + return mgmt_cmd_status(sk, hdev->id, + MGMT_OP_SET_EXP_FEATURE, + MGMT_STATUS_NOT_SUPPORTED); + } + + if (changed) { + if (val) + hci_dev_set_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED); + else + hci_dev_clear_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED); + } + + bt_dev_info(hdev, "offload codecs enable %d changed %d", + val, changed); + + memcpy(rp.uuid, offload_codecs_uuid, 16); + rp.flags = cpu_to_le32(val ? BIT(0) : 0); + hci_sock_set_flag(sk, HCI_MGMT_EXP_FEATURE_EVENTS); + err = mgmt_cmd_complete(sk, hdev->id, + MGMT_OP_SET_EXP_FEATURE, 0, + &rp, sizeof(rp)); + + if (changed) + exp_offload_codec_feature_changed(val, sk); + + return err; + } +#endif + return mgmt_cmd_status(sk, hdev ? hdev->id : MGMT_INDEX_NONE, MGMT_OP_SET_EXP_FEATURE, MGMT_STATUS_NOT_SUPPORTED); diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index b44d56eb936a..bc033464af43 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -964,6 +964,11 @@ static int sco_sock_setsockopt(struct socket *sock, int level, int optname, break; } + if (!hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) { + err = -EOPNOTSUPP; + break; + } + if (!hdev->get_codec_config_data) { err = -EOPNOTSUPP; break; @@ -1163,6 +1168,11 @@ static int sco_sock_getsockopt(struct socket *sock, int level, int optname, break; } + if (!hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) { + err = -EOPNOTSUPP; + break; + } + if (!hdev->get_data_path_id) { err = -EOPNOTSUPP; break;