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[50.89.67.214]) by smtp.gmail.com with ESMTPSA id a1e0cc1a2514c-86b1ef052a6sm857744241.27.2025.02.26.10.11.34 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Feb 2025 10:11:35 -0800 (PST) From: Luiz Augusto von Dentz To: linux-bluetooth@vger.kernel.org Subject: [PATCH BlueZ v3 2/4] device: Add implementation of PreferredBearer Date: Wed, 26 Feb 2025 13:11:27 -0500 Message-ID: <20250226181129.2958079-2-luiz.dentz@gmail.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250226181129.2958079-1-luiz.dentz@gmail.com> References: <20250226181129.2958079-1-luiz.dentz@gmail.com> Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Luiz Augusto von Dentz This adds initial implementation of PreferredBearer. --- src/device.c | 99 ++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 96 insertions(+), 3 deletions(-) diff --git a/src/device.c b/src/device.c index ec97fc889056..de92e68d2780 100644 --- a/src/device.c +++ b/src/device.c @@ -152,6 +152,7 @@ struct svc_callback { /* Per-bearer (LE or BR/EDR) device state */ struct bearer_state { + bool prefer; bool paired; bool bonded; bool connected; @@ -2543,10 +2544,12 @@ static uint8_t select_conn_bearer(struct btd_device *dev) time_t bredr_last = NVAL_TIME, le_last = NVAL_TIME; time_t current = time(NULL); - /* Prefer bonded bearer in case only one is bonded */ - if (dev->bredr_state.bonded && !dev->le_state.bonded ) + /* Use preferred bearer or bonded bearer in case only one is bonded */ + if (dev->bredr_state.prefer || + (dev->bredr_state.bonded && !dev->le_state.bonded)) return BDADDR_BREDR; - else if (!dev->bredr_state.bonded && dev->le_state.bonded) + else if (dev->le_state.prefer || + (!dev->bredr_state.bonded && dev->le_state.bonded)) return dev->bdaddr_type; /* If the address is random it can only be connected over LE */ @@ -3340,6 +3343,92 @@ static const GDBusMethodTable device_methods[] = { { } }; +static const char *device_prefer_bearer_str(struct btd_device *device) +{ + if (device->bredr_state.prefer) + return "bredr"; + else if (device->le_state.prefer) + return "le"; + else + return "last-seen"; +} + +static gboolean +dev_property_get_prefer_bearer(const GDBusPropertyTable *property, + DBusMessageIter *iter, void *data) +{ + struct btd_device *device = data; + const char *str = device_prefer_bearer_str(device); + + dbus_message_iter_append_basic(iter, DBUS_TYPE_STRING, &str); + + return TRUE; +} + +static void +dev_property_set_prefer_bearer(const GDBusPropertyTable *property, + DBusMessageIter *value, + GDBusPendingPropertySet id, void *data) +{ + struct btd_device *device = data; + const char *str; + + if (dbus_message_iter_get_arg_type(value) != DBUS_TYPE_STRING) { + g_dbus_pending_property_error(id, + ERROR_INTERFACE ".InvalidArguments", + "Invalid arguments in method call"); + return; + } + + dbus_message_iter_get_basic(value, &str); + + if (!strcasecmp(device_prefer_bearer_str(device), str)) + goto done; + + if (!strcasecmp(str, "last-seen")) { + device->bredr_state.prefer = false; + device->le_state.prefer = false; + } else if (!strcasecmp(str, "bredr")) { + device->bredr_state.prefer = true; + device->le_state.prefer = false; + /* Remove device from auto-connect list so the kernel does not + * attempt to auto-connect to it in case it starts advertising. + */ + device_set_auto_connect(device, FALSE); + } else if (!strcasecmp(str, "le")) { + device->le_state.prefer = true; + device->bredr_state.prefer = false; + /* Add device to auto-connect list */ + device_set_auto_connect(device, TRUE); + } else { + g_dbus_pending_property_error(id, + ERROR_INTERFACE ".InvalidArguments", + "Invalid arguments in method call"); + return; + } + + g_dbus_emit_property_changed(dbus_conn, device->path, + DEVICE_INTERFACE, "PreferredBearer"); + +done: + g_dbus_pending_property_success(id); +} + +static gboolean +dev_property_prefer_bearer_exists(const GDBusPropertyTable *property, + void *data) +{ + struct btd_device *device = data; + + /* Check if both BR/EDR and LE bearer are connected/bonded */ + if ((device->bredr_state.connected || device->bredr_state.bonded) && + (device->le_state.connected || device->le_state.bonded)) + return TRUE; + + /* Check if both BR/EDR and LE are connectable */ + return device->bredr_state.connectable && device->le_state.connectable; +} + static const GDBusPropertyTable device_properties[] = { { "Address", "s", dev_property_get_address }, { "AddressType", "s", property_get_address_type }, @@ -3378,6 +3467,10 @@ static const GDBusPropertyTable device_properties[] = { dev_property_wake_allowed_exist }, { "Sets", "a{oa{sv}}", dev_property_get_set, NULL, dev_property_set_exists }, + { "PreferredBearer", "s", dev_property_get_prefer_bearer, + dev_property_set_prefer_bearer, + dev_property_prefer_bearer_exists, + G_DBUS_PROPERTY_FLAG_EXPERIMENTAL }, { } }; From patchwork Wed Feb 26 18:11:29 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luiz Augusto von Dentz X-Patchwork-Id: 868603 Received: from mail-vs1-f46.google.com (mail-vs1-f46.google.com [209.85.217.46]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2559D22F163 for ; 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[50.89.67.214]) by smtp.gmail.com with ESMTPSA id a1e0cc1a2514c-86b1ef052a6sm857744241.27.2025.02.26.10.11.41 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 26 Feb 2025 10:11:42 -0800 (PST) From: Luiz Augusto von Dentz To: linux-bluetooth@vger.kernel.org Subject: [PATCH BlueZ v3 4/4] storage: Add support for storing PreferredBearer Date: Wed, 26 Feb 2025 13:11:29 -0500 Message-ID: <20250226181129.2958079-4-luiz.dentz@gmail.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250226181129.2958079-1-luiz.dentz@gmail.com> References: <20250226181129.2958079-1-luiz.dentz@gmail.com> Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Luiz Augusto von Dentz This adds support for storing PreferredBearer into device info file. --- doc/settings-storage.txt | 2 ++ src/device.c | 66 +++++++++++++++++++++++++++++----------- 2 files changed, 51 insertions(+), 17 deletions(-) diff --git a/doc/settings-storage.txt b/doc/settings-storage.txt index 178e7d07bf11..4e9881eedf02 100644 --- a/doc/settings-storage.txt +++ b/doc/settings-storage.txt @@ -293,6 +293,8 @@ Long term key) related to a remote device. strings remote in 128-bits UUID format, separated by ";" + PreferredBearer String Preferred bearer for remote device + [DeviceID] group contains: diff --git a/src/device.c b/src/device.c index de92e68d2780..9219eb674f87 100644 --- a/src/device.c +++ b/src/device.c @@ -368,10 +368,25 @@ static GSList *find_service_with_uuid(GSList *list, char *uuid) return NULL; } +static const char *device_prefer_bearer_str(struct btd_device *device) +{ + /* Check if both BR/EDR and LE bearer are supported */ + if (!device->bredr || !device->le) + return NULL; + + if (device->bredr_state.prefer) + return "bredr"; + else if (device->le_state.prefer) + return "le"; + else + return "last-seen"; +} + static void update_technologies(GKeyFile *file, struct btd_device *dev) { const char *list[2]; size_t len = 0; + const char *bearer; if (dev->bredr) list[len++] = "BR/EDR"; @@ -391,6 +406,12 @@ static void update_technologies(GKeyFile *file, struct btd_device *dev) g_key_file_set_string_list(file, "General", "SupportedTechnologies", list, len); + + /* Store the PreferredBearer in case of dual-mode devices */ + bearer = device_prefer_bearer_str(dev); + if (bearer) + g_key_file_set_string(file, "General", "PreferredBearer", + bearer); } static void store_csrk(struct csrk_info *csrk, GKeyFile *key_file, @@ -2080,6 +2101,7 @@ bool btd_device_add_set(struct btd_device *device, bool encrypted, static void device_set_auto_connect(struct btd_device *device, gboolean enable) { char addr[18]; + const char *bearer; if (!device || !device->le || device_address_is_private(device)) return; @@ -2100,6 +2122,11 @@ static void device_set_auto_connect(struct btd_device *device, gboolean enable) return; } + /* Inhibit auto connect if BR/EDR bearer is preferred */ + bearer = device_prefer_bearer_str(device); + if (bearer && !strcasecmp(bearer, "bredr")) + return; + /* Enabling auto connect */ adapter_auto_connect_add(device->adapter, device); @@ -3343,16 +3370,6 @@ static const GDBusMethodTable device_methods[] = { { } }; -static const char *device_prefer_bearer_str(struct btd_device *device) -{ - if (device->bredr_state.prefer) - return "bredr"; - else if (device->le_state.prefer) - return "le"; - else - return "last-seen"; -} - static gboolean dev_property_get_prefer_bearer(const GDBusPropertyTable *property, DBusMessageIter *iter, void *data) @@ -3382,6 +3399,7 @@ dev_property_set_prefer_bearer(const GDBusPropertyTable *property, dbus_message_iter_get_basic(value, &str); + /* Check if current preferred bearer is the same */ if (!strcasecmp(device_prefer_bearer_str(device), str)) goto done; @@ -3407,6 +3425,8 @@ dev_property_set_prefer_bearer(const GDBusPropertyTable *property, return; } + store_device_info(device); + g_dbus_emit_property_changed(dbus_conn, device->path, DEVICE_INTERFACE, "PreferredBearer"); @@ -3420,13 +3440,7 @@ dev_property_prefer_bearer_exists(const GDBusPropertyTable *property, { struct btd_device *device = data; - /* Check if both BR/EDR and LE bearer are connected/bonded */ - if ((device->bredr_state.connected || device->bredr_state.bonded) && - (device->le_state.connected || device->le_state.bonded)) - return TRUE; - - /* Check if both BR/EDR and LE are connectable */ - return device->bredr_state.connectable && device->le_state.connectable; + return device_prefer_bearer_str(device) != NULL; } static const GDBusPropertyTable device_properties[] = { @@ -3996,6 +4010,24 @@ static void load_info(struct btd_device *device, const char *local, g_strfreev(techno); + /* Load preferred bearer */ + str = g_key_file_get_string(key_file, "General", "PreferredBearer", + NULL); + if (str) { + if (!strcasecmp(str, "last-seen")) { + device->bredr_state.prefer = false; + device->le_state.prefer = false; + } else if (!strcasecmp(str, "bredr")) { + device->bredr_state.prefer = true; + device->le_state.prefer = false; + } else if (!strcasecmp(str, "le")) { + device->le_state.prefer = true; + device->bredr_state.prefer = false; + } + + g_free(str); + } + next: /* Load trust */ device->trusted = g_key_file_get_boolean(key_file, "General",