From patchwork Fri Nov 19 08:20:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "K, Kiran" X-Patchwork-Id: 516978 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 21FA6C433F5 for ; Fri, 19 Nov 2021 08:15:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0E318603E7 for ; Fri, 19 Nov 2021 08:15:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234201AbhKSIS2 (ORCPT ); Fri, 19 Nov 2021 03:18:28 -0500 Received: from mga04.intel.com ([192.55.52.120]:1545 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234272AbhKSIS0 (ORCPT ); Fri, 19 Nov 2021 03:18:26 -0500 X-IronPort-AV: E=McAfee;i="6200,9189,10172"; a="233098448" X-IronPort-AV: E=Sophos;i="5.87,246,1631602800"; d="scan'208";a="233098448" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Nov 2021 00:15:25 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.87,246,1631602800"; d="scan'208";a="473468865" Received: from intel-lenovo-legion-y540-15irh-pg0.iind.intel.com ([10.224.186.95]) by orsmga002.jf.intel.com with ESMTP; 19 Nov 2021 00:15:23 -0800 From: Kiran K To: linux-bluetooth@vger.kernel.org Cc: ravishankar.srivatsa@intel.com, chethan.tumkur.narayan@intel.com, luiz.von.dentz@intel.com, Kiran K Subject: [PATCH v4 14/14] Bluetooth: Add MSFT a2dp offload codec under experimental flag Date: Fri, 19 Nov 2021 13:50:27 +0530 Message-Id: <20211119082027.12809-14-kiran.k@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211119082027.12809-1-kiran.k@intel.com> References: <20211119082027.12809-1-kiran.k@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Keep MSFT a2dp offload codecs feature under experimental flag. Signed-off-by: Kiran K Reviewed-by: Chethan T N Reviewed-by: Srivatsa Ravishankar --- net/bluetooth/mgmt.c | 94 +++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 93 insertions(+), 1 deletion(-) diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index f8f74d344297..913e2c66cdf6 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -3887,10 +3887,16 @@ static const u8 rpa_resolution_uuid[16] = { 0xea, 0x11, 0x73, 0xc2, 0x48, 0xa1, 0xc0, 0x15, }; +/* 0cc2131f-96f0-4cd1-b313-b97e7cbc8335 */ +static const u8 msft_a2dp_offload_codecs_uuid[16] = { + 0x35, 0x83, 0xbc, 0x7c, 0x7e, 0xb9, 0x13, 0xb3, + 0xd1, 0x4c, 0xf0, 0x96, 0x1f, 0x13, 0xc2, 0x0c, +}; + static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev, void *data, u16 data_len) { - char buf[102]; /* Enough space for 5 features: 2 + 20 * 5 */ + char buf[122]; /* Enough space for 6 features: 2 + 20 * 6 */ struct mgmt_rp_read_exp_features_info *rp = (void *)buf; u16 idx = 0; u32 flags; @@ -3957,6 +3963,17 @@ static int read_exp_features_info(struct sock *sk, struct hci_dev *hdev, idx++; } + if (hdev && hdev->get_data_path_id) { + if (hci_dev_test_flag(hdev, HCI_MSFT_A2DP_OFFLOAD_CODECS_ENABLED)) + flags = BIT(0); + else + flags = 0; + + memcpy(rp->features[idx].uuid, msft_a2dp_offload_codecs_uuid, 16); + rp->features[idx].flags = cpu_to_le32(flags); + idx++; + } + rp->feature_count = cpu_to_le16(idx); /* After reading the experimental features information, enable @@ -4256,6 +4273,20 @@ static int exp_offload_codec_feature_changed(bool enabled, struct hci_dev *hdev, HCI_MGMT_EXP_FEATURE_EVENTS, skip); } +static int exp_msft_a2dp_offload_codec_feature_changed(bool enabled, + struct sock *skip) +{ + struct mgmt_ev_exp_feature_changed ev; + + memset(&ev, 0, sizeof(ev)); + memcpy(ev.uuid, msft_a2dp_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); +} + static int set_offload_codec_func(struct sock *sk, struct hci_dev *hdev, struct mgmt_cp_set_exp_feature *cp, u16 data_len) @@ -4314,6 +4345,66 @@ static int set_offload_codec_func(struct sock *sk, struct hci_dev *hdev, return err; } +static int set_msft_a2dp_offload_codec_func(struct sock *sk, struct hci_dev *hdev, + struct mgmt_cp_set_exp_feature *cp, + u16 data_len) +{ + bool val, changed; + int err; + struct mgmt_rp_set_exp_feature rp; + + /* 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_MSFT_A2DP_OFFLOAD_CODECS_ENABLED)); + + if (!hdev->get_data_path_id) { + 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_MSFT_A2DP_OFFLOAD_CODECS_ENABLED); + else + hci_dev_clear_flag(hdev, + HCI_MSFT_A2DP_OFFLOAD_CODECS_ENABLED); + } + + bt_dev_info(hdev, "msft offload codecs enable %d changed %d", + val, changed); + + memcpy(rp.uuid, msft_a2dp_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_msft_a2dp_offload_codec_feature_changed(val, sk); + + return err; +} static const struct mgmt_exp_feature { const u8 *uuid; int (*set_func)(struct sock *sk, struct hci_dev *hdev, @@ -4326,6 +4417,7 @@ static const struct mgmt_exp_feature { EXP_FEAT(rpa_resolution_uuid, set_rpa_resolution_func), EXP_FEAT(quality_report_uuid, set_quality_report_func), EXP_FEAT(offload_codecs_uuid, set_offload_codec_func), + EXP_FEAT(msft_a2dp_offload_codecs_uuid, set_msft_a2dp_offload_codec_func), /* end with a null feature */ EXP_FEAT(NULL, NULL)