From patchwork Fri Jan 21 11:22:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joseph Hwang X-Patchwork-Id: 534598 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2B708C433FE for ; Fri, 21 Jan 2022 11:22:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1380129AbiAULWv (ORCPT ); Fri, 21 Jan 2022 06:22:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58252 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1380056AbiAULWu (ORCPT ); Fri, 21 Jan 2022 06:22:50 -0500 Received: from mail-pg1-x535.google.com (mail-pg1-x535.google.com [IPv6:2607:f8b0:4864:20::535]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B0E6C061574 for ; Fri, 21 Jan 2022 03:22:50 -0800 (PST) Received: by mail-pg1-x535.google.com with SMTP id c5so7900161pgk.12 for ; Fri, 21 Jan 2022 03:22:50 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=3q3X8YUXMmeX3ExmAyvXno86nrvAGMzIvDZTG48rU/Y=; b=TcEOobGo7l3bMaindLBr+yt6TMkPedRSi8679oj9LjbMnJuol7C15438f6zTywCg/E u8oAzVHdCyAy6uFOTF4WVBHBf8NCFrT3iQ2O3ml2BizWBFWJMLSECGQvmjpfqSfj/3Bz AMFmweoUMA4fMz/ovmUdcQIxYud2AxmjFBtFg= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=3q3X8YUXMmeX3ExmAyvXno86nrvAGMzIvDZTG48rU/Y=; b=nO7o/U5YGvWBv+giSx20/sGvKLJ2fKJBMdUGgzMZL9MZ03LMt9/kaqZ8xCg6JUA4Ij +Hk9CWcZAwlkoBgt7WCnodzkBWZ1vugrayuSuFTdHtvxnL6p1i5TfwpFLvltOyZYgFx5 GaqRAzy3TR7/p5FzUVAC9k5AZ2SOD27PbRMKR6kOXD1lwpfUxIwJ30uR8CMaCjMBFcBy JyORZPH+rRzlg2gstntSr8y4VRb55ZIaJ8EYYlx9G3kgXxRK/kMYrCA7t02o074eTMh+ uj0cqCJIrMjmbEIjSs1Ri6EYcrp5n1MZ15KWrfcob+8MLhgvj3B7JfqkdAgx+QEpaD5R BKJw== X-Gm-Message-State: AOAM5317NwItatG8C9o0nB6rkU9HzrNd/nbqXOyCUTNh+yTgaLrq3eXX mYVH/Y/zxYZ0RKE47m5KONGsgp9gwKYrFw== X-Google-Smtp-Source: ABdhPJx/NjDUfZCmSZ6vPyuzF8fWSkhjllUZhyS/GPI254soFBCLh9XCULkxf3gx7gxEonPKv5U6bw== X-Received: by 2002:a05:6a00:1a94:b0:4c3:a8f8:1e46 with SMTP id e20-20020a056a001a9400b004c3a8f81e46mr3604936pfv.2.1642764169136; Fri, 21 Jan 2022 03:22:49 -0800 (PST) Received: from localhost (174.71.80.34.bc.googleusercontent.com. [34.80.71.174]) by smtp.gmail.com with UTF8SMTPSA id b9sm6529218pfm.154.2022.01.21.03.22.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 21 Jan 2022 03:22:48 -0800 (PST) From: Joseph Hwang To: linux-bluetooth@vger.kernel.org, marcel@holtmann.org, luiz.dentz@gmail.com, pali@kernel.org Cc: chromeos-bluetooth-upstreaming@chromium.org, josephsih@google.com, Joseph Hwang , Archie Pusaka , "David S. Miller" , Jakub Kicinski , Johan Hedberg , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v1 1/2] Bluetooth: aosp: surface AOSP quality report through mgmt Date: Fri, 21 Jan 2022 19:22:32 +0800 Message-Id: <20220121192152.v1.1.I2015b42d2d0a502334c9c3a2983438b89716d4f0@changeid> X-Mailer: git-send-email 2.35.0.rc0.227.g00780c9af4-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org When receiving a HCI vendor event, the kernel checks if it is an AOSP bluetooth quality report. If yes, the event is sent to bluez user space through the mgmt socket. Signed-off-by: Joseph Hwang Reviewed-by: Archie Pusaka --- include/net/bluetooth/hci_core.h | 2 ++ include/net/bluetooth/mgmt.h | 7 ++++ net/bluetooth/aosp.c | 61 ++++++++++++++++++++++++++++++++ net/bluetooth/aosp.h | 12 +++++++ net/bluetooth/hci_event.c | 33 ++++++++++++++++- net/bluetooth/mgmt.c | 22 ++++++++++++ 6 files changed, 136 insertions(+), 1 deletion(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 21eadb113a31..727cb9c056b2 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -1861,6 +1861,8 @@ int mgmt_add_adv_patterns_monitor_complete(struct hci_dev *hdev, u8 status); int mgmt_remove_adv_monitor_complete(struct hci_dev *hdev, u8 status); void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, bdaddr_t *bdaddr, u8 addr_type); +int mgmt_quality_report(struct hci_dev *hdev, struct sk_buff *skb, + u8 quality_spec); u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, u16 to_multiplier); diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h index 99266f7aebdc..6a0fcb3aef8a 100644 --- a/include/net/bluetooth/mgmt.h +++ b/include/net/bluetooth/mgmt.h @@ -1120,3 +1120,10 @@ struct mgmt_ev_adv_monitor_device_lost { __le16 monitor_handle; struct mgmt_addr_info addr; } __packed; + +#define MGMT_EV_QUALITY_REPORT 0x0031 +struct mgmt_ev_quality_report { + __u8 quality_spec; + __u8 data_len; + __u8 data[0]; +} __packed; diff --git a/net/bluetooth/aosp.c b/net/bluetooth/aosp.c index 432ae3aac9e3..9e3551627ad5 100644 --- a/net/bluetooth/aosp.c +++ b/net/bluetooth/aosp.c @@ -199,3 +199,64 @@ int aosp_set_quality_report(struct hci_dev *hdev, bool enable) else return disable_quality_report(hdev); } + +#define BLUETOOTH_QUALITY_REPORT_EV 0x58 +struct bqr_data { + __u8 quality_report_id; + __u8 packet_type; + __le16 conn_handle; + __u8 conn_role; + __s8 tx_power_level; + __s8 rssi; + __u8 snr; + __u8 unused_afh_channel_count; + __u8 afh_select_unideal_channel_count; + __le16 lsto; + __le32 conn_piconet_clock; + __le32 retransmission_count; + __le32 no_rx_count; + __le32 nak_count; + __le32 last_tx_ack_timestamp; + __le32 flow_off_count; + __le32 last_flow_on_timestamp; + __le32 buffer_overflow_bytes; + __le32 buffer_underflow_bytes; + + /* Vendor Specific Parameter */ + __u8 vsp[0]; +} __packed; + +struct aosp_hci_vs_data { + __u8 code; + __u8 data[0]; +} __packed; + +bool aosp_is_quality_report_evt(struct sk_buff *skb) +{ + struct aosp_hci_vs_data *ev; + + if (skb->len < sizeof(struct aosp_hci_vs_data)) + return false; + + ev = (struct aosp_hci_vs_data *)skb->data; + + return ev->code == BLUETOOTH_QUALITY_REPORT_EV; +} + +bool aosp_pull_quality_report_data(struct sk_buff *skb) +{ + size_t bqr_data_len = sizeof(struct bqr_data); + + skb_pull(skb, sizeof(struct aosp_hci_vs_data)); + + /* skb->len is allowed to be larger than bqr_data_len to have + * the Vendor Specific Parameter (vsp) field. + */ + if (skb->len < bqr_data_len) { + BT_ERR("AOSP evt data len %d too short (%u expected)", + skb->len, bqr_data_len); + return false; + } + + return true; +} diff --git a/net/bluetooth/aosp.h b/net/bluetooth/aosp.h index 2fd8886d51b2..49894a995647 100644 --- a/net/bluetooth/aosp.h +++ b/net/bluetooth/aosp.h @@ -10,6 +10,8 @@ void aosp_do_close(struct hci_dev *hdev); bool aosp_has_quality_report(struct hci_dev *hdev); int aosp_set_quality_report(struct hci_dev *hdev, bool enable); +bool aosp_is_quality_report_evt(struct sk_buff *skb); +bool aosp_pull_quality_report_data(struct sk_buff *skb); #else @@ -26,4 +28,14 @@ static inline int aosp_set_quality_report(struct hci_dev *hdev, bool enable) return -EOPNOTSUPP; } +static inline bool aosp_is_quality_report_evt(struct sk_buff *skb) +{ + return false; +} + +static inline bool aosp_pull_quality_report_data(struct sk_buff *skb) +{ + return false; +} + #endif diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 681c623aa380..bccb659a9454 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -37,6 +37,7 @@ #include "smp.h" #include "msft.h" #include "eir.h" +#include "aosp.h" #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ "\x00\x00\x00\x00\x00\x00\x00\x00" @@ -4225,6 +4226,36 @@ static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data, queue_work(hdev->workqueue, &hdev->tx_work); } +#define QUALITY_SPEC_NA 0x0 +#define QUALITY_SPEC_INTEL_TELEMETRY 0x1 +#define QUALITY_SPEC_AOSP_BQR 0x2 + +static bool quality_report_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + if (aosp_is_quality_report_evt(skb)) { + if (aosp_has_quality_report(hdev) && + aosp_pull_quality_report_data(skb)) + mgmt_quality_report(hdev, skb, QUALITY_SPEC_AOSP_BQR); + + return true; + } + + return false; +} + +static void hci_vendor_evt(struct hci_dev *hdev, void *data, + struct sk_buff *skb) +{ + /* Every distinct vendor specification must have a well-defined + * condition to determine if an event meets the specification. + * The skb is consumed by a specification only if the event meets + * the specification. + */ + if (!quality_report_evt(hdev, data, skb)) + msft_vendor_evt(hdev, data, skb); +} + static void hci_mode_change_evt(struct hci_dev *hdev, void *data, struct sk_buff *skb) { @@ -6811,7 +6842,7 @@ static const struct hci_ev { HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt, sizeof(struct hci_ev_num_comp_blocks)), /* [0xff = HCI_EV_VENDOR] */ - HCI_EV(HCI_EV_VENDOR, msft_vendor_evt, 0), + HCI_EV(HCI_EV_VENDOR, hci_vendor_evt, 0), }; static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 08d6494f1b34..78687ae885be 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -4389,6 +4389,28 @@ static int set_exp_feature(struct sock *sk, struct hci_dev *hdev, MGMT_STATUS_NOT_SUPPORTED); } +int mgmt_quality_report(struct hci_dev *hdev, struct sk_buff *skb, + u8 quality_spec) +{ + struct mgmt_ev_quality_report *ev; + size_t ev_len; + int err; + + /* The ev comes with a variable-length data field. */ + ev_len = sizeof(*ev) + skb->len; + ev = kmalloc(ev_len, GFP_KERNEL); + if (!ev) + return -ENOMEM; + + ev->quality_spec = quality_spec; + ev->data_len = skb->len; + memcpy(ev->data, skb->data, skb->len); + err = mgmt_event(MGMT_EV_QUALITY_REPORT, hdev, ev, ev_len, NULL); + kfree(ev); + + return err; +} + static int get_device_flags(struct sock *sk, struct hci_dev *hdev, void *data, u16 data_len) { From patchwork Fri Jan 21 11:22:33 2022 Content-Type: text/plain; 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[34.80.71.174]) by smtp.gmail.com with UTF8SMTPSA id e15sm2444529pjd.52.2022.01.21.03.22.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 21 Jan 2022 03:22:52 -0800 (PST) From: Joseph Hwang To: linux-bluetooth@vger.kernel.org, marcel@holtmann.org, luiz.dentz@gmail.com, pali@kernel.org Cc: chromeos-bluetooth-upstreaming@chromium.org, josephsih@google.com, Joseph Hwang , Archie Pusaka , "David S. Miller" , Jakub Kicinski , Johan Hedberg , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH v1 2/2] Bluetooth: btintel: surface Intel telemetry events through mgmt Date: Fri, 21 Jan 2022 19:22:33 +0800 Message-Id: <20220121192152.v1.2.I63681490281b2392aa1ac05dff91a126394ab649@changeid> X-Mailer: git-send-email 2.35.0.rc0.227.g00780c9af4-goog In-Reply-To: <20220121192152.v1.1.I2015b42d2d0a502334c9c3a2983438b89716d4f0@changeid> References: <20220121192152.v1.1.I2015b42d2d0a502334c9c3a2983438b89716d4f0@changeid> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org When receiving a HCI vendor event, the kernel checks if it is an Intel telemetry event. If yes, the event is sent to bluez user space through the mgmt socket. Signed-off-by: Joseph Hwang Reviewed-by: Archie Pusaka Reported-by: kernel test robot --- drivers/bluetooth/btintel.c | 43 +++++++++++++++++++++++++++++++- drivers/bluetooth/btintel.h | 12 +++++++++ include/net/bluetooth/hci_core.h | 2 ++ net/bluetooth/hci_event.c | 12 ++++++--- 4 files changed, 65 insertions(+), 4 deletions(-) diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c index 1a4f8b227eac..d3b7a796cb91 100644 --- a/drivers/bluetooth/btintel.c +++ b/drivers/bluetooth/btintel.c @@ -2401,8 +2401,10 @@ static int btintel_setup_combined(struct hci_dev *hdev) set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); set_bit(HCI_QUIRK_NON_PERSISTENT_DIAG, &hdev->quirks); - /* Set up the quality report callback for Intel devices */ + /* Set up the quality report callbacks for Intel devices */ hdev->set_quality_report = btintel_set_quality_report; + hdev->is_quality_report_evt = btintel_is_quality_report_evt; + hdev->pull_quality_report_data = btintel_pull_quality_report_data; /* For Legacy device, check the HW platform value and size */ if (skb->len == sizeof(ver) && skb->data[1] == 0x37) { @@ -2645,6 +2647,45 @@ void btintel_secure_send_result(struct hci_dev *hdev, } EXPORT_SYMBOL_GPL(btintel_secure_send_result); +#define INTEL_PREFIX 0x8087 +#define TELEMETRY_CODE 0x03 + +struct intel_prefix_evt_data { + __le16 vendor_prefix; + __u8 code; + __u8 data[0]; /* a number of struct intel_tlv subevents */ +} __packed; + +bool btintel_is_quality_report_evt(struct sk_buff *skb) +{ + struct intel_prefix_evt_data *ev; + u16 vendor_prefix; + + if (skb->len < sizeof(struct intel_prefix_evt_data)) + return false; + + ev = (struct intel_prefix_evt_data *)skb->data; + vendor_prefix = __le16_to_cpu(ev->vendor_prefix); + + return vendor_prefix == INTEL_PREFIX && ev->code == TELEMETRY_CODE; +} +EXPORT_SYMBOL_GPL(btintel_is_quality_report_evt); + +bool btintel_pull_quality_report_data(struct sk_buff *skb) +{ + skb_pull(skb, sizeof(struct intel_prefix_evt_data)); + + /* A telemetry event contains at least one intel_tlv subevent. */ + if (skb->len < sizeof(struct intel_tlv)) { + BT_ERR("Telemetry event length %d too short (at least %u)", + skb->len, sizeof(struct intel_tlv)); + return false; + } + + return true; +} +EXPORT_SYMBOL_GPL(btintel_pull_quality_report_data); + MODULE_AUTHOR("Marcel Holtmann "); MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION); MODULE_VERSION(VERSION); diff --git a/drivers/bluetooth/btintel.h b/drivers/bluetooth/btintel.h index c9b24e9299e2..841aef3dbd4c 100644 --- a/drivers/bluetooth/btintel.h +++ b/drivers/bluetooth/btintel.h @@ -210,6 +210,8 @@ void btintel_bootup(struct hci_dev *hdev, const void *ptr, unsigned int len); void btintel_secure_send_result(struct hci_dev *hdev, const void *ptr, unsigned int len); int btintel_set_quality_report(struct hci_dev *hdev, bool enable); +bool btintel_is_quality_report_evt(struct sk_buff *skb); +bool btintel_pull_quality_report_data(struct sk_buff *skb); #else static inline int btintel_check_bdaddr(struct hci_dev *hdev) @@ -305,4 +307,14 @@ static inline int btintel_set_quality_report(struct hci_dev *hdev, bool enable) { return -ENODEV; } + +static inline bool btintel_is_quality_report_evt(struct sk_buff *skb) +{ + return false; +} + +static inline bool btintel_pull_quality_report_data(struct sk_buff *skb); +{ + return false; +} #endif diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 727cb9c056b2..b74ba1585df9 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -632,6 +632,8 @@ struct hci_dev { void (*cmd_timeout)(struct hci_dev *hdev); bool (*wakeup)(struct hci_dev *hdev); int (*set_quality_report)(struct hci_dev *hdev, bool enable); + bool (*is_quality_report_evt)(struct sk_buff *skb); + bool (*pull_quality_report_data)(struct sk_buff *skb); int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path); int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type, struct bt_codec *codec, __u8 *vnd_len, diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index bccb659a9454..5f9cc7b942a1 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -4237,11 +4237,17 @@ static bool quality_report_evt(struct hci_dev *hdev, void *data, if (aosp_has_quality_report(hdev) && aosp_pull_quality_report_data(skb)) mgmt_quality_report(hdev, skb, QUALITY_SPEC_AOSP_BQR); - - return true; + } else if (hdev->is_quality_report_evt && + hdev->is_quality_report_evt(skb)) { + if (hdev->set_quality_report && + hdev->pull_quality_report_data(skb)) + mgmt_quality_report(hdev, skb, + QUALITY_SPEC_INTEL_TELEMETRY); + } else { + return false; } - return false; + return true; } static void hci_vendor_evt(struct hci_dev *hdev, void *data,