From patchwork Tue Sep 7 10:12:42 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "K, Kiran" X-Patchwork-Id: 508006 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 AB6DCC433FE for ; Tue, 7 Sep 2021 10:07:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9383561131 for ; Tue, 7 Sep 2021 10:07:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244320AbhIGKIt (ORCPT ); Tue, 7 Sep 2021 06:08:49 -0400 Received: from mga17.intel.com ([192.55.52.151]:1677 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244061AbhIGKIs (ORCPT ); Tue, 7 Sep 2021 06:08:48 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10099"; a="200362835" X-IronPort-AV: E=Sophos;i="5.85,274,1624345200"; d="scan'208";a="200362835" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Sep 2021 03:07:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,274,1624345200"; d="scan'208";a="512785162" Received: from intel-lenovo-legion-y540-15irh-pg0.iind.intel.com ([10.224.186.95]) by orsmga001.jf.intel.com with ESMTP; 07 Sep 2021 03:07:40 -0700 From: Kiran K To: linux-bluetooth@vger.kernel.org Cc: ravishankar.srivatsa@intel.com, chethan.tumkur.narayan@intel.com, luiz.von.dentz@intel.com, michaelfsun@google.com, Kiran K Subject: [PATCH v15 06/13] Bluetooth: Allow setting of codec for HFP offload use case Date: Tue, 7 Sep 2021 15:42:42 +0530 Message-Id: <20210907101249.7323-6-kiran.k@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210907101249.7323-1-kiran.k@intel.com> References: <20210907101249.7323-1-kiran.k@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org This patch allows user space to set the codec that needs to be used for HFP offload use case. The codec details are cached and the controller is configured before opening the SCO connection. Signed-off-by: Kiran K Reviewed-by: Chethan T N Reviewed-by: Srivatsa Ravishankar --- Notes: * changes in v15: - s/CODING_FORMAT_CVSD/BT_CODEC_CVSD/g * changes in v14: - No changes * changes in v13: - Only cache the codec to be set in setsockopt. Use these values later when opening SCO connection * changes in v12: - check for mgmt flag before setting codec for offload use case * changes in v11: - Remove changes related to Kconfig * changes in v10: - patch refactor - having callback definition and usage in the same patch include/net/bluetooth/bluetooth.h | 2 ++ net/bluetooth/sco.c | 60 +++++++++++++++++++++++++++++++ 2 files changed, 62 insertions(+) diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h index 64cddff0c9c4..536cae9a8bd7 100644 --- a/include/net/bluetooth/bluetooth.h +++ b/include/net/bluetooth/bluetooth.h @@ -173,6 +173,8 @@ struct bt_codecs { struct bt_codec codecs[]; } __packed; +#define BT_CODEC_CVSD 0x02 + __printf(1, 2) void bt_info(const char *fmt, ...); __printf(1, 2) diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index df8cba0c9cc4..aaf89c41113a 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -69,6 +69,7 @@ struct sco_pinfo { __u32 flags; __u16 setting; __u8 cmsg_mask; + struct bt_codec codec; struct sco_conn *conn; }; @@ -441,6 +442,7 @@ static void __sco_sock_close(struct sock *sk) sock_set_flag(sk, SOCK_ZAPPED); break; } + } /* Must be called on unlocked socket. */ @@ -501,6 +503,10 @@ static struct sock *sco_sock_alloc(struct net *net, struct socket *sock, sk->sk_state = BT_OPEN; sco_pi(sk)->setting = BT_VOICE_CVSD_16BIT; + sco_pi(sk)->codec.id = BT_CODEC_CVSD; + sco_pi(sk)->codec.cid = 0xffff; + sco_pi(sk)->codec.vid = 0xffff; + sco_pi(sk)->codec.data_path = 0x00; bt_sock_link(&sco_sk_list, sk); return sk; @@ -833,6 +839,9 @@ static int sco_sock_setsockopt(struct socket *sock, int level, int optname, int len, err = 0; struct bt_voice voice; u32 opt; + struct bt_codecs *codecs; + struct hci_dev *hdev; + __u8 buffer[255]; BT_DBG("sk %p", sk); @@ -894,6 +903,57 @@ static int sco_sock_setsockopt(struct socket *sock, int level, int optname, sco_pi(sk)->cmsg_mask &= SCO_CMSG_PKT_STATUS; break; + case BT_CODEC: + if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND && + sk->sk_state != BT_CONNECT2) { + err = -EINVAL; + break; + } + + hdev = hci_get_route(&sco_pi(sk)->dst, &sco_pi(sk)->src, + BDADDR_BREDR); + if (!hdev) { + err = -EBADFD; + break; + } + + if (!hci_dev_test_flag(hdev, HCI_OFFLOAD_CODECS_ENABLED)) { + hci_dev_put(hdev); + err = -EOPNOTSUPP; + break; + } + + if (!hdev->get_data_path_id) { + hci_dev_put(hdev); + err = -EOPNOTSUPP; + break; + } + + if (optlen < sizeof(struct bt_codecs) || + optlen > sizeof(buffer)) { + hci_dev_put(hdev); + err = -EINVAL; + break; + } + + if (copy_from_sockptr(buffer, optval, optlen)) { + hci_dev_put(hdev); + err = -EFAULT; + break; + } + + codecs = (void *)buffer; + + if (codecs->num_codecs > 1) { + hci_dev_put(hdev); + err = -EINVAL; + break; + } + + sco_pi(sk)->codec = codecs->codecs[0]; + hci_dev_put(hdev); + break; + default: err = -ENOPROTOOPT; break;