From mboxrd@z Thu Jan 1 00:00:00 1970 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=-14.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNWANTED_LANGUAGE_BODY, 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 940D9C43461 for ; Tue, 18 May 2021 10:39:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 75BEB6135F for ; Tue, 18 May 2021 10:39:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348565AbhERKkS (ORCPT ); Tue, 18 May 2021 06:40:18 -0400 Received: from mga02.intel.com ([134.134.136.20]:23240 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242442AbhERKkM (ORCPT ); Tue, 18 May 2021 06:40:12 -0400 IronPort-SDR: S/WJ7B8iecVdYi2rZDEVS4ynXTCZuiTG9rs22gdurrJ3Hr+0rBONM0lqayBjDrQ054mFOJxKkt 7o2U6snuQIAw== X-IronPort-AV: E=McAfee;i="6200,9189,9987"; a="187804821" X-IronPort-AV: E=Sophos;i="5.82,309,1613462400"; d="scan'208";a="187804821" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 May 2021 03:38:54 -0700 IronPort-SDR: rUU9sU86OnSpGuIlmOpuy+qpjKGz/1MdVk29fjm0fFg34uxk8s7a65bZmgqkOYklVTxn2Lnwpa DfCxX62HDomg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,309,1613462400"; d="scan'208";a="433017849" Received: from intel-lenovo-legion-y540-15irh-pg0.iind.intel.com ([10.224.186.95]) by orsmga007.jf.intel.com with ESMTP; 18 May 2021 03:38:52 -0700 From: Kiran K To: linux-bluetooth@vger.kernel.org Cc: ravishankar.srivatsa@intel.com, chethan.tumkur.narayan@intel.com, Kiran K Subject: [PATCH v8 5/9] Bluetooth: Add BT_CODEC option for getsockopt for SCO socket Date: Tue, 18 May 2021 16:12:28 +0530 Message-Id: <20210518104232.5431-5-kiran.k@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210518104232.5431-1-kiran.k@intel.com> References: <20210518104232.5431-1-kiran.k@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Add BT_CODEC option for getsockopt systemcall over SCO socket to expose the codecs supported by controller Signed-off-by: Kiran K Reviewed-by: Chethan T N Reviewed-by: Srivatsa Ravishankar --- include/net/bluetooth/bluetooth.h | 20 ++++++ include/net/bluetooth/hci.h | 4 ++ net/bluetooth/sco.c | 109 ++++++++++++++++++++++++++++++ 3 files changed, 133 insertions(+) diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h index 9125effbf448..1840756958ce 100644 --- a/include/net/bluetooth/bluetooth.h +++ b/include/net/bluetooth/bluetooth.h @@ -153,6 +153,26 @@ struct bt_voice { #define BT_SCM_PKT_STATUS 0x03 +#define BT_CODEC 19 + +struct bt_codec_caps { + __u8 len; + __u8 data[]; +} __packed; + +struct bt_codec { + __u8 id; + __le16 cid; + __le16 vid; + __u8 data_path; + __u8 num_caps; +} __packed; + +struct bt_codecs { + __u8 num_codecs; + struct bt_codec codecs[]; +} __packed; + __printf(1, 2) void bt_info(const char *fmt, ...); __printf(1, 2) diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h index 731d48ca873a..9658600ae5de 100644 --- a/include/net/bluetooth/hci.h +++ b/include/net/bluetooth/hci.h @@ -2626,6 +2626,10 @@ static inline struct hci_sco_hdr *hci_sco_hdr(const struct sk_buff *skb) #define hci_iso_data_len(h) ((h) & 0x3fff) #define hci_iso_data_flags(h) ((h) >> 14) +/* codec transport types */ +#define TRANSPORT_BREDR 0x00 +#define TRANSPORT_SCO_ESCO 0x01 + /* le24 support */ static inline void hci_cpu_to_le24(__u32 val, __u8 dst[3]) { diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 3bd41563f118..d66293d1cba4 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -948,6 +948,11 @@ static int sco_sock_getsockopt(struct socket *sock, int level, int optname, struct bt_voice voice; u32 phys; int pkt_status; + struct codec_list *c; + u8 num_codecs, i, __user *ptr; + struct hci_dev *hdev; + struct hci_codec_caps *caps; + __u8 data_path; BT_DBG("sk %p", sk); @@ -1012,6 +1017,110 @@ static int sco_sock_getsockopt(struct socket *sock, int level, int optname, err = -EFAULT; break; + case BT_CODEC: + num_codecs = 0; + len = 0; + + hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, BDADDR_BREDR); + + if (!hdev) { + err = -EBADFD; + break; + } + + if (!test_bit(HCI_QUIRK_HFP_OFFLOAD_CODECS_SUPPORTED, &hdev->quirks)) { + err = -EOPNOTSUPP; + break; + } + + if (!hdev->get_data_path_id) { + err = -EOPNOTSUPP; + break; + } + + hci_dev_lock(hdev); + list_for_each_entry(c, &hdev->local_codecs, list) { + if (c->transport != TRANSPORT_SCO_ESCO) + continue; + num_codecs++; + for (i = 0, caps = c->caps; i < c->num_caps; i++) { + len += 1 + caps->len; + caps = (void *)&caps->data[caps->len]; + } + len += sizeof(struct bt_codec); + } + hci_dev_unlock(hdev); + + if (len > 255) { + err = -ENOMEM; + break; + } + + ptr = optval; + if (put_user(num_codecs, ptr)) { + err = -EFAULT; + break; + } + ptr += sizeof(num_codecs); + + hci_dev_lock(hdev); + list_for_each_entry(c, &hdev->local_codecs, list) { + if (c->transport != TRANSPORT_SCO_ESCO) + continue; + + if (put_user(c->id, ptr)) { + err = -EFAULT; + goto unlock; + } + ptr += sizeof(c->id); + + if (put_user(c->cid, ptr)) { + err = -EFAULT; + goto unlock; + } + ptr += sizeof(c->cid); + + if (put_user(c->vid, ptr)) { + err = -EFAULT; + goto unlock; + } + ptr += sizeof(c->vid); + + err = hdev->get_data_path_id(hdev); + if (err < 0) { + err = -EFAULT; + goto unlock; + } + data_path = (__u8)err; + if (put_user(data_path, ptr)) { + err = -EFAULT; + goto unlock; + } + ptr += sizeof(data_path); + + if (put_user(c->num_caps, ptr)) { + err = -EFAULT; + goto unlock; + } + ptr += sizeof(c->num_caps); + + len = 0; + for (i = 0, caps = c->caps; i < c->num_caps; i++) { + len += 1 + caps->len; + caps = (void *)&caps->data[caps->len]; + } + + if (len && copy_to_user(ptr, c->caps, len)) { + err = -EFAULT; + goto unlock; + } + ptr += len; + } +unlock: + hci_dev_unlock(hdev); + + break; + default: err = -ENOPROTOOPT; break; -- 2.17.1