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Tue, 15 Dec 2020 23:19:05 -0800 (PST) Date: Wed, 16 Dec 2020 15:18:22 +0800 Message-Id: <20201216151748.BlueZ.v1.1.I6e3ace32f08a22879ede97a1433f524189bf24df@changeid> Mime-Version: 1.0 X-Mailer: git-send-email 2.29.2.684.gfbc64c5ab5-goog Subject: [BlueZ PATCH v1] core: Disable advmon manager interface for old kernel From: Howard Chung To: linux-bluetooth@vger.kernel.org, luiz.dentz@gmail.com Cc: mcchou@chromium.org, mmandlik@chromium.org, Howard Chung Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org This disables Advertisement monitor manager interface if the underlying kernel does not support necessary MGMT commands such as add/remove filters, so clients can know that they are not able to register any filters before actually register one. --- src/adapter.c | 9 +++++++-- src/adapter.h | 1 + 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/src/adapter.c b/src/adapter.c index ec6a6a64c50a..cbfbd5feecd9 100644 --- a/src/adapter.c +++ b/src/adapter.c @@ -8649,7 +8649,8 @@ static int adapter_register(struct btd_adapter *adapter) adapter->adv_manager = btd_adv_manager_new(adapter, adapter->mgmt); if (g_dbus_get_flags() & G_DBUS_FLAG_ENABLE_EXPERIMENTAL) { - if (adapter->supported_settings & MGMT_SETTING_LE) { + if (adapter->supported_settings & MGMT_SETTING_LE && + btd_has_kernel_features(KERNEL_ADV_MONITOR_CMDS)) { adapter->adv_monitor_manager = btd_adv_monitor_manager_create(adapter, adapter->mgmt); @@ -8661,7 +8662,7 @@ static int adapter_register(struct btd_adapter *adapter) } } else { btd_info(adapter->dev_id, "Adv Monitor Manager " - "skipped, LE unavailable"); + "skipped, kernel or LE unavailable"); } } @@ -9721,6 +9722,10 @@ static void read_commands_complete(uint8_t status, uint16_t length, DBG("kernel supports controller cap command"); kernel_features |= KERNEL_HAS_CONTROLLER_CAP_CMD; break; + case MGMT_OP_ADD_ADV_PATTERNS_MONITOR: + DBG("kernel supports adv monitor commands"); + kernel_features |= KERNEL_ADV_MONITOR_CMDS; + break; default: break; } diff --git a/src/adapter.h b/src/adapter.h index 60b5e3bcca34..39bb3990abbe 100644 --- a/src/adapter.h +++ b/src/adapter.h @@ -237,6 +237,7 @@ enum kernel_features { KERNEL_HAS_RESUME_EVT = 1 << 4, KERNEL_HAS_EXT_ADV_ADD_CMDS = 1 << 5, KERNEL_HAS_CONTROLLER_CAP_CMD = 1 << 6, + KERNEL_ADV_MONITOR_CMDS = 1 << 7, }; bool btd_has_kernel_features(uint32_t feature);