From patchwork Thu Sep 17 22:22:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Winkler X-Patchwork-Id: 11783641 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A1220618 for ; Thu, 17 Sep 2020 22:22:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7F5FD20874 for ; Thu, 17 Sep 2020 22:22:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=google.com header.i=@google.com header.b="ZH0qQn3X" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726368AbgIQWWm (ORCPT ); Thu, 17 Sep 2020 18:22:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47640 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726316AbgIQWWg (ORCPT ); Thu, 17 Sep 2020 18:22:36 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5A49EC06174A for ; Thu, 17 Sep 2020 15:22:36 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id d15so3592704ybk.0 for ; Thu, 17 Sep 2020 15:22:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=sender:date:in-reply-to:message-id:mime-version:references:subject :from:to:cc; bh=6KVYAtT8avJT6nGdwz/alAqsUTxpVl7DrmYqi+6Qdd8=; b=ZH0qQn3XVVbWQYzf0YQMBRIESHKTr2OukmgdWCO7WpgSghJMC5GBZgbU+O54fT590T eJ89xfjzBGJrWmmoaEn9a2UVFKV0pIgx0iT8sP9XfBjqnoozwvZ1y+AWHgLro7YkEUPB /O0KJ4TAhPmFnNalCuIctndomyQddXPjK9UwVLltnQukZkh1lx1df7mwHeAXwv3cp0Hs cehN093GPSs7uhvOasMD9SCBzbewXNAapHdl4uWY/UMFm4qBt0k4UCwVe8vdd0/SfFnp kZ+tk5yCrr1WDu4S1meI9P6KPsd4rW17FvpYpBT6KwzL8Nvhu8AS9YDFvsyNIx+TlWl5 RI/Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=6KVYAtT8avJT6nGdwz/alAqsUTxpVl7DrmYqi+6Qdd8=; b=TKw/H17VI03USqiW1LoQbM3tjzX5le9i2vmJ27xmeE/9X0KO0qyhtnf0BNkZuWEHuk yzMPPLmZW5IhGSLQBy6TvZ6e739FnvYddyasx/dC83ca5476hFDwOzvwXYZh2seCTzQ4 V64VOrh5H/bWELZgiztDcmtLRp10FOITgNhv5Ls0MOX8dGsysIMaIJ38rzZ8/LN1SHdx z+lJD16C57Dq5Zwke/KvnyZQScB0shNM/swUHjNiFwW6QmCn909x1hbZOyeOr38adUsk e084XOeE4qSX3ZiL3hw7ltF3xTcbPY2wtnTsajBjdsgd/JCvj8EwIorxCux6p+hiDsEJ 30sw== X-Gm-Message-State: AOAM533BHsjqfl/8IugxqIWVEzPRc4wD+BBqUngeEnclExrGypVWXDy5 wU+H5t4PHZ7KOeeVbmPj4Yp6hsF7O4Mo6F1NU8SW X-Google-Smtp-Source: ABdhPJxC5/D/JnjQqVL5U6aZTf7ASRpfVuPf7sKnRKkHPapIb8ol4CGQKVQOcDJ5d2kUA1+KTfn8miyv1abmQCzMoMPo X-Received: from danielwinkler-linux.mtv.corp.google.com ([2620:15c:202:201:f693:9fff:fef4:4e59]) (user=danielwinkler job=sendgmr) by 2002:a25:c694:: with SMTP id k142mr18415607ybf.369.1600381355591; Thu, 17 Sep 2020 15:22:35 -0700 (PDT) Date: Thu, 17 Sep 2020 15:22:15 -0700 In-Reply-To: <20200917222217.2534502-1-danielwinkler@google.com> Message-Id: <20200917152052.v2.4.I34169001276125c476e86ece0b4802c36aa08bca@changeid> Mime-Version: 1.0 References: <20200917222217.2534502-1-danielwinkler@google.com> X-Mailer: git-send-email 2.28.0.681.g6f77f65b4e-goog Subject: [PATCH v2 4/6] Bluetooth: Emit tx power chosen on ext adv params completion From: Daniel Winkler To: marcel@holtmann.org Cc: chromeos-bluetooth-upstreaming@chromium.org, linux-bluetooth@vger.kernel.org, Daniel Winkler , Sonny Sasaka , "David S. Miller" , Jakub Kicinski , Johan Hedberg , linux-kernel@vger.kernel.org, netdev@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org Our hci call to set extended advertising parameters returns the actual tx power selected by the controller. This patch signals a new TX_POWER_SELECTED mgmt event to alert the caller of the actual tx power that is being used. This is important because the power selected will not necessarily match the power requested by the user. This patch is manually verified by ensuring the tx power selected event is signalled and caught by bluetoothd. Reviewed-by: Sonny Sasaka Signed-off-by: Daniel Winkler --- Changes in v2: None include/net/bluetooth/hci_core.h | 2 ++ include/net/bluetooth/mgmt.h | 6 ++++++ net/bluetooth/hci_event.c | 4 ++++ net/bluetooth/mgmt.c | 11 +++++++++++ 4 files changed, 23 insertions(+) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index ab168f46b6d909..667b9d37099dec 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -1781,6 +1781,8 @@ void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, u8 instance); void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, u8 instance); +void mgmt_adv_tx_power_selected(struct hci_dev *hdev, u8 instance, + s8 tx_power); int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h index 859f0d3cd6ea38..db64cf4747554c 100644 --- a/include/net/bluetooth/mgmt.h +++ b/include/net/bluetooth/mgmt.h @@ -1079,3 +1079,9 @@ struct mgmt_ev_controller_resume { #define MGMT_WAKE_REASON_NON_BT_WAKE 0x0 #define MGMT_WAKE_REASON_UNEXPECTED 0x1 #define MGMT_WAKE_REASON_REMOTE_WAKE 0x2 + +#define MGMT_EV_ADV_TX_POWER_SELECTED 0x002f +struct mgmt_ev_adv_tx_power_selected { + __u8 instance; + __s8 tx_power; +} __packed; diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index bd306ba3ade545..9a24fd99d9e08e 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -1749,6 +1749,10 @@ static void hci_cc_set_ext_adv_param(struct hci_dev *hdev, struct sk_buff *skb) } /* Update adv data as tx power is known now */ hci_req_update_adv_data(hdev, hdev->cur_adv_instance); + + if (cp->handle) + mgmt_adv_tx_power_selected(hdev, cp->handle, rp->tx_power); + hci_dev_unlock(hdev); } diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 717c97affb1554..b9347ff1a1e961 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -167,6 +167,7 @@ static const u16 mgmt_events[] = { MGMT_EV_DEVICE_FLAGS_CHANGED, MGMT_EV_CONTROLLER_SUSPEND, MGMT_EV_CONTROLLER_RESUME, + MGMT_EV_ADV_TX_POWER_SELECTED, }; static const u16 mgmt_untrusted_commands[] = { @@ -1152,6 +1153,16 @@ void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, mgmt_event(MGMT_EV_ADVERTISING_REMOVED, hdev, &ev, sizeof(ev), sk); } +void mgmt_adv_tx_power_selected(struct hci_dev *hdev, u8 instance, s8 tx_power) +{ + struct mgmt_ev_adv_tx_power_selected ev; + + ev.instance = instance; + ev.tx_power = tx_power; + + mgmt_event(MGMT_EV_ADV_TX_POWER_SELECTED, hdev, &ev, sizeof(ev), NULL); +} + static void cancel_adv_timeout(struct hci_dev *hdev) { if (hdev->adv_instance_timeout) {