Return-Path: From: Arman Uguray To: linux-bluetooth@vger.kernel.org Cc: Arman Uguray Subject: [PATCH BlueZ v3 4/8] profiles/gap: Fix probe/accept behavior. Date: Tue, 13 Jan 2015 19:31:03 -0800 Message-Id: <1421206267-26369-5-git-send-email-armansito@chromium.org> In-Reply-To: <1421206267-26369-1-git-send-email-armansito@chromium.org> References: <1421206267-26369-1-git-send-email-armansito@chromium.org> Sender: linux-bluetooth-owner@vger.kernel.org List-ID: This patch fixes the GAP profile so that it assumes that there will be one btd_service instance per-device rather than per-service-per-device. --- profiles/gap/gas.c | 127 ++++++++++++++++++++++++++++++----------------------- 1 file changed, 71 insertions(+), 56 deletions(-) diff --git a/profiles/gap/gas.c b/profiles/gap/gas.c index 01b6ec2..7d81592 100644 --- a/profiles/gap/gas.c +++ b/profiles/gap/gas.c @@ -43,21 +43,25 @@ #include "src/service.h" #include "src/log.h" +#define GAP_UUID16 0x1800 + /* Generic Attribute/Access Service */ struct gas { struct btd_device *device; struct gatt_db *db; + unsigned int db_id; struct bt_gatt_client *client; - uint16_t start_handle, end_handle; + struct gatt_db_attribute *attr; }; static GSList *devices; static void gas_free(struct gas *gas) { - btd_device_unref(gas->device); + gatt_db_unregister(gas->db, gas->db_id); gatt_db_unref(gas->db); bt_gatt_client_unref(gas->client); + btd_device_unref(gas->device); g_free(gas); } @@ -183,48 +187,31 @@ static void handle_characteristic(struct gatt_db_attribute *attr, static void handle_gap_service(struct gas *gas) { - struct gatt_db_attribute *attr; - - attr = gatt_db_get_attribute(gas->db, gas->start_handle); - if (!attr) { - error("Service with handle 0x%04x not found in db", - gas->start_handle); - return; - } - - gatt_db_service_foreach_char(attr, handle_characteristic, gas); + gatt_db_service_foreach_char(gas->attr, handle_characteristic, gas); } static int gap_driver_probe(struct btd_service *service) { struct btd_device *device = btd_service_get_device(service); struct gas *gas; - uint16_t start_handle, end_handle; GSList *l; char addr[18]; - if (!btd_service_get_gatt_handles(service, &start_handle, &end_handle)) - return -1; - ba2str(device_get_address(device), addr); - DBG("GAP profile probe (%s): start: 0x%04x, end 0x%04x", addr, - start_handle, end_handle); + DBG("GAP profile probe (%s)", addr); - /* - * There can't be more than one instance of the GAP service on the same - * device. - */ + /* Ignore, if we were probed for this device already */ l = g_slist_find_custom(devices, device, cmp_device); if (l) { - error("More than one GAP service exists on device"); + error("Profile probed twice for the same device!"); return -1; } gas = g_new0(struct gas, 1); + if (!gas) + return -1; gas->device = btd_device_ref(device); - gas->start_handle = start_handle; - gas->end_handle = end_handle; devices = g_slist_append(devices, gas); return 0; @@ -234,19 +221,11 @@ static void gap_driver_remove(struct btd_service *service) { struct btd_device *device = btd_service_get_device(service); struct gas *gas; - uint16_t start_handle, end_handle; GSList *l; char addr[18]; - if (!btd_service_get_gatt_handles(service, &start_handle, - &end_handle)) { - error("Removed service is not a GATT service"); - return; - } - ba2str(device_get_address(device), addr); - DBG("GAP profile remove (%s): start: 0x%04x, end 0x%04x", addr, - start_handle, end_handle); + DBG("GAP profile remove (%s)", addr); l = g_slist_find_custom(devices, device, cmp_device); if (!l) { @@ -256,14 +235,58 @@ static void gap_driver_remove(struct btd_service *service) gas = l->data; - if (gas->start_handle != start_handle || - gas->end_handle != end_handle) { - error("Removed unknown GAP service"); + devices = g_slist_remove(devices, gas); + gas_free(gas); +} + +static void foreach_gap_service(struct gatt_db_attribute *attr, void *user_data) +{ + struct gas *gas = user_data; + + if (gas->attr) { + error("More than one GAP service exists for this device"); return; } - devices = g_slist_remove(devices, gas); - gas_free(gas); + gas->attr = attr; + handle_gap_service(gas); +} + +static void service_added(struct gatt_db_attribute *attr, void *user_data) +{ + struct gas *gas = user_data; + bt_uuid_t uuid, gap_uuid; + + if (!bt_gatt_client_is_ready(gas->client)) + return; + + gatt_db_attribute_get_service_uuid(attr, &uuid); + bt_uuid16_create(&gap_uuid, GAP_UUID16); + + if (bt_uuid_cmp(&uuid, &gap_uuid)) + return; + + if (gas->attr) { + error("More than one GAP service added to device"); + return; + } + + DBG("GAP service added"); + + gas->attr = attr; + handle_gap_service(gas); +} + +static void service_removed(struct gatt_db_attribute *attr, void *user_data) +{ + struct gas *gas = user_data; + + if (gas->attr != attr) + return; + + DBG("GAP service removed"); + + gas->attr = NULL; } static int gap_driver_accept(struct btd_service *service) @@ -272,19 +295,12 @@ static int gap_driver_accept(struct btd_service *service) struct gatt_db *db = btd_device_get_gatt_db(device); struct bt_gatt_client *client = btd_device_get_gatt_client(device); struct gas *gas; - uint16_t start_handle, end_handle; GSList *l; char addr[18]; - - if (!btd_service_get_gatt_handles(service, &start_handle, - &end_handle)) { - error("Service is not a GATT service"); - return -1; - } + bt_uuid_t gap_uuid; ba2str(device_get_address(device), addr); - DBG("GAP profile accept (%s): start: 0x%04x, end 0x%04x", addr, - start_handle, end_handle); + DBG("GAP profile accept (%s)", addr); l = g_slist_find_custom(devices, device, cmp_device); if (!l) { @@ -294,21 +310,20 @@ static int gap_driver_accept(struct btd_service *service) gas = l->data; - if (gas->start_handle != start_handle || - gas->end_handle != end_handle) { - error("Accepting unknown GAP service"); - return -1; - } - /* Clean-up any old client/db and acquire the new ones */ + gas->attr = NULL; + gatt_db_unregister(gas->db, gas->db_id); gatt_db_unref(gas->db); bt_gatt_client_unref(gas->client); gas->db = gatt_db_ref(db); gas->client = bt_gatt_client_ref(client); + gas->db_id = gatt_db_register(db, service_added, service_removed, gas, + NULL); - /* Handle the service */ - handle_gap_service(gas); + /* Handle the GAP services */ + bt_uuid16_create(&gap_uuid, GAP_UUID16); + gatt_db_foreach_service(db, &gap_uuid, foreach_gap_service, gas); return 0; } -- 2.2.0.rc0.207.ga3a616c