/* * Copyright (c) 2022 Demant * * SPDX-License-Identifier: Apache-2.0 */ #include #include #include DEFINE_FFF_GLOBALS; #include #include #include #include #include "hal/ccm.h" #include "util/util.h" #include "util/mem.h" #include "util/memq.h" #include "util/dbuf.h" #include "pdu_df.h" #include "lll/pdu_vendor.h" #include "pdu.h" #include "ll.h" #include "ll_settings.h" #include "lll.h" #include "lll/lll_df_types.h" #include "lll_conn_iso.h" #include "lll_conn.h" #include "ull_tx_queue.h" #include "isoal.h" #include "ull_iso_types.h" #include "ull_conn_types.h" #include "ull_conn_iso_types.h" #include "ull_conn_iso_internal.h" #include "ull_llcp.h" #include "ull_conn_internal.h" #include "ull_llcp_internal.h" #include "helper_pdu.h" #include "helper_util.h" static struct ll_conn conn; static struct ll_conn_iso_group cig_mock = { 0 }; static struct ll_conn_iso_stream cis_mock = { .established = 1, .group = &cig_mock }; /* struct ll_conn_iso_stream *ll_conn_iso_stream_get(uint16_t handle); */ FAKE_VALUE_FUNC(struct ll_conn_iso_stream *, ll_conn_iso_stream_get, uint16_t); static void cis_create_setup(void *data) { test_setup(&conn); RESET_FAKE(ll_conn_iso_stream_get); } static bool is_instant_reached(struct ll_conn *conn, uint16_t instant) { return ((event_counter(conn) - instant) & 0xFFFF) <= 0x7FFF; } #define MAX_xDU 160 static struct pdu_data_llctrl_cis_req remote_cis_req = { .cig_id = 0x01, .cis_id = 0x02, .c_phy = 0x01, .p_phy = 0x01, .c_max_sdu_packed = { MAX_xDU, 0 }, .p_max_sdu = { MAX_xDU, 0 }, .c_max_pdu = MAX_xDU, .p_max_pdu = MAX_xDU, .nse = 2, .p_bn = 1, .c_bn = 1, .c_ft = 1, .p_ft = 1, .iso_interval = 6, .conn_event_count = 12, .c_sdu_interval = { 0, 0, 0}, .p_sdu_interval = { 0, 0, 0}, .sub_interval = { 0, 0, 0}, .cis_offset_min = { 0, 0, 0}, .cis_offset_max = { 0, 0, 0} }; static struct pdu_data_llctrl_cis_ind remote_cis_ind = { .aa = { 0, 0, 0, 0}, .cig_sync_delay = { 0, 0, 0}, .cis_offset = { 0, 0, 0}, .cis_sync_delay = { 0, 0, 0}, .conn_event_count = 12 }; static struct pdu_data_llctrl_cis_req local_cis_req = { .cig_id = 0x00, .cis_id = 0x02, .c_phy = 0x01, .p_phy = 0x01, .c_max_sdu_packed = { MAX_xDU, 0 }, .p_max_sdu = { MAX_xDU, 0 }, .c_max_pdu = MAX_xDU, .p_max_pdu = MAX_xDU, .nse = 2, .p_bn = 1, .c_bn = 1, .c_ft = 1, .p_ft = 1, .iso_interval = 6, .conn_event_count = 0, .c_sdu_interval = { 0, 0, 0}, .p_sdu_interval = { 0, 0, 0}, .sub_interval = { 0, 0, 0}, .cis_offset_min = { 0, 0, 0}, .cis_offset_max = { 0, 0, 0} }; static struct pdu_data_llctrl_cis_ind local_cis_ind = { .aa = { 0, 0, 0, 0}, .cig_sync_delay = { 0, 0, 0}, .cis_offset = { 0, 0, 0}, .cis_sync_delay = { 0, 0, 0}, .conn_event_count = 13 }; #define ERROR_CODE 0x17 /* * Central-initiated CIS Create procedure. * Central requests CIS, peripheral Host rejects. * * +-----+ +-------+ +-----+ * | UT | | LL_S | | LT | * +-----+ +-------+ +-----+ * | | | * | | LL_CIS_REQ | * | |<--------------------------| * | | | * | LE CIS Request | | * |<--------------------------| | * | LE CIS Request | | * | Accept | | * |-------------------------->| | * | | | * | | LL_CIS_RSP | * | |-------------------------->| * | | | * | | LL_CIS_IND | * | |<--------------------------| * | | | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * | | | * | LE CIS ESTABLISHED | | * |<--------------------------| | */ ZTEST(cis_create, test_cc_create_periph_rem_host_accept) { struct node_tx *tx; struct node_rx_pdu *ntf; struct node_rx_conn_iso_req cis_req = { .cig_id = 0x01, .cis_handle = 0x00, .cis_id = 0x02 }; struct pdu_data_llctrl_cis_rsp local_cis_rsp = { .cis_offset_max = { 0, 0, 0}, .cis_offset_min = { 0, 0, 0}, .conn_event_count = 12 }; struct node_rx_conn_iso_estab cis_estab = { .cis_handle = 0x00, .status = 0x00 }; /* Prepare mocked call to ll_conn_iso_stream_get() */ ll_conn_iso_stream_get_fake.return_val = &cis_mock; /* Role */ test_set_role(&conn, BT_HCI_ROLE_PERIPHERAL); /* Connect */ ull_cp_state_set(&conn, ULL_CP_CONNECTED); /* Prepare */ event_prepare(&conn); /* Rx */ lt_tx(LL_CIS_REQ, &conn, &remote_cis_req); /* Done */ event_done(&conn); /* There should be excactly one host notification */ ut_rx_node(NODE_CIS_REQUEST, &ntf, &cis_req); ut_rx_q_is_empty(); /* Release Ntf */ release_ntf(ntf); /* Accept request */ ull_cp_cc_accept(&conn, 0U); /* Prepare */ event_prepare(&conn); /* Tx Queue should have one LL Control PDU */ lt_rx(LL_CIS_RSP, &conn, &tx, &local_cis_rsp); lt_rx_q_is_empty(&conn); /* Done */ event_done(&conn); /* Prepare */ event_prepare(&conn); /* Release Tx */ ull_cp_release_tx(&conn, tx); /* Rx */ lt_tx(LL_CIS_IND, &conn, &remote_cis_ind); /* Done */ event_done(&conn); /* */ while (!is_instant_reached(&conn, remote_cis_ind.conn_event_count)) { /* Prepare */ event_prepare(&conn); /* Tx Queue should NOT have a LL Control PDU */ lt_rx_q_is_empty(&conn); /* Done */ event_done(&conn); /* There should NOT be a host notification */ ut_rx_q_is_empty(); } /* Prepare */ event_prepare(&conn); /* Done */ event_done(&conn); /* Emulate CIS becoming established */ ull_cp_cc_established(&conn, 0); /* Prepare */ event_prepare(&conn); /* Tx Queue should NOT have a LL Control PDU */ lt_rx_q_is_empty(&conn); /* Done */ event_done(&conn); /* Prepare */ event_prepare(&conn); /* There should be excactly one host notification */ ut_rx_node(NODE_CIS_ESTABLISHED, &ntf, &cis_estab); ut_rx_q_is_empty(); /* Done */ event_done(&conn); /* NODE_CIS_ESTABLISHED carry extra information in header rx footer param field */ zassert_equal_ptr(ntf->rx_ftr.param, &cis_mock); zassert_equal(llcp_ctx_buffers_free(), test_ctx_buffers_cnt(), "Free CTX buffers %d", llcp_ctx_buffers_free()); } /* * Central-initiated CIS Create procedure. * Central requests CIS, peripheral Host rejects. * * +-----+ +-------+ +-----+ * | UT | | LL_S | | LT | * +-----+ +-------+ +-----+ * | | | * | | LL_CIS_REQ | * | |<--------------------------| * | | | * | LE CIS Request | | * |<--------------------------| | * | LE CIS Request | | * | Decline | | * |-------------------------->| | * | | | * | | LL_REJECT_EXT_IND | * | |-------------------------->| * | | | */ ZTEST(cis_create, test_cc_create_periph_rem_host_reject) { struct node_tx *tx; struct node_rx_pdu *ntf; struct node_rx_conn_iso_req cis_req = { .cig_id = 0x01, .cis_handle = 0x00, .cis_id = 0x02 }; struct pdu_data_llctrl_reject_ext_ind local_reject = { .error_code = ERROR_CODE, .reject_opcode = PDU_DATA_LLCTRL_TYPE_CIS_REQ }; /* Role */ test_set_role(&conn, BT_HCI_ROLE_PERIPHERAL); /* Connect */ ull_cp_state_set(&conn, ULL_CP_CONNECTED); /* Prepare */ event_prepare(&conn); /* Rx */ lt_tx(LL_CIS_REQ, &conn, &remote_cis_req); /* Done */ event_done(&conn); /* There should be excactly one host notification */ ut_rx_node(NODE_CIS_REQUEST, &ntf, &cis_req); ut_rx_q_is_empty(); /* Release Ntf */ release_ntf(ntf); /* Decline request */ ull_cp_cc_reject(&conn, ERROR_CODE); /* Prepare */ event_prepare(&conn); /* Tx Queue should have one LL Control PDU */ lt_rx(LL_REJECT_EXT_IND, &conn, &tx, &local_reject); lt_rx_q_is_empty(&conn); /* Done */ event_done(&conn); zassert_equal(llcp_ctx_buffers_free(), test_ctx_buffers_cnt(), "Free CTX buffers %d", llcp_ctx_buffers_free()); } /* * Central-initiated CIS Create procedure. * Central requests CIS, ask peripheral host peripheral Host fails to reply * * +-----+ +-------+ +-----+ * | UT | | LL_S | | LT | * +-----+ +-------+ +-----+ * | | | * | | LL_CIS_REQ | * | |<--------------------------| * | | | * | LE CIS Request | | * |<--------------------------| | * | | | * * * Let time pass ...... * * * | | | * | | LL_REJECT_EXT_IND (to) | * | |-------------------------->| * | | | */ ZTEST(cis_create, test_cc_create_periph_rem_host_accept_to) { struct node_tx *tx; struct node_rx_pdu *ntf; struct node_rx_conn_iso_req cis_req = { .cig_id = 0x01, .cis_handle = 0x00, .cis_id = 0x02 }; struct pdu_data_llctrl_reject_ext_ind local_reject = { .error_code = BT_HCI_ERR_CONN_ACCEPT_TIMEOUT, .reject_opcode = PDU_DATA_LLCTRL_TYPE_CIS_REQ }; struct node_rx_conn_iso_estab cis_estab = { .cis_handle = 0x00, .status = BT_HCI_ERR_CONN_ACCEPT_TIMEOUT }; /* Role */ test_set_role(&conn, BT_HCI_ROLE_PERIPHERAL); /* Connect */ ull_cp_state_set(&conn, ULL_CP_CONNECTED); /* Prepare */ event_prepare(&conn); /* Rx */ lt_tx(LL_CIS_REQ, &conn, &remote_cis_req); /* Done */ event_done(&conn); /* There should be excactly one host notification */ ut_rx_node(NODE_CIS_REQUEST, &ntf, &cis_req); ut_rx_q_is_empty(); /* Release Ntf */ release_ntf(ntf); /* Emulate that time passes real fast re. timeout */ conn.connect_accept_to = 0; /* Prepare */ event_prepare(&conn); /* Done */ event_done(&conn); /* Prepare */ event_prepare(&conn); /* Tx Queue should now have one LL Control PDU */ lt_rx(LL_REJECT_EXT_IND, &conn, &tx, &local_reject); lt_rx_q_is_empty(&conn); /* Done */ event_done(&conn); /* There should be excactly one host notification */ ut_rx_node(NODE_CIS_ESTABLISHED, &ntf, &cis_estab); ut_rx_q_is_empty(); /* Release Ntf */ release_ntf(ntf); zassert_equal(llcp_ctx_buffers_free(), test_ctx_buffers_cnt(), "Free CTX buffers %d", llcp_ctx_buffers_free()); } /* * Central-initiated CIS Create procedure. * Central requests CIS w. invalid PHY param, peripheral Host rejects. * * +-----+ +-------+ +-----+ * | UT | | LL_S | | LT | * +-----+ +-------+ +-----+ * | | | * | | LL_CIS_REQ (w. invald PHY) | * | |<------------------------------| * | | | * | | | * | | | * | | | * | | | * | | | * | | LL_REJECT_EXT_IND | * | |------------------------------>| * | | | */ ZTEST(cis_create, test_cc_create_periph_rem_invalid_phy) { static struct pdu_data_llctrl_cis_req remote_cis_req_invalid_phy = { .cig_id = 0x01, .cis_id = 0x02, .c_phy = 0x03, .p_phy = 0x01, .c_max_sdu_packed = { MAX_xDU, 0 }, .p_max_sdu = { MAX_xDU, 0 }, .c_max_pdu = MAX_xDU, .p_max_pdu = MAX_xDU, .nse = 2, .p_bn = 1, .c_bn = 1, .c_ft = 1, .p_ft = 1, .iso_interval = 6, .conn_event_count = 12, .c_sdu_interval = { 0, 0, 0}, .p_sdu_interval = { 0, 0, 0}, .sub_interval = { 0, 0, 0}, .cis_offset_min = { 0, 0, 0}, .cis_offset_max = { 0, 0, 0} }; struct node_tx *tx; struct pdu_data_llctrl_reject_ext_ind local_reject = { .error_code = BT_HCI_ERR_UNSUPP_FEATURE_PARAM_VAL, .reject_opcode = PDU_DATA_LLCTRL_TYPE_CIS_REQ }; /* Role */ test_set_role(&conn, BT_HCI_ROLE_PERIPHERAL); /* Connect */ ull_cp_state_set(&conn, ULL_CP_CONNECTED); /* Prepare */ event_prepare(&conn); /* Rx */ lt_tx(LL_CIS_REQ, &conn, &remote_cis_req_invalid_phy); /* Done */ event_done(&conn); /* Prepare */ event_prepare(&conn); /* Tx Queue should have one LL Control PDU */ lt_rx(LL_REJECT_EXT_IND, &conn, &tx, &local_reject); lt_rx_q_is_empty(&conn); /* Done */ event_done(&conn); zassert_equal(llcp_ctx_buffers_free(), test_ctx_buffers_cnt(), "Free CTX buffers %d", llcp_ctx_buffers_free()); } /* * Central-initiated CIS Create procedure. * Host requests CIS, LL replies with 'remote feature unsupported' * * +-----+ +-------+ +-----+ * | UT | | LL_C | | LT | * +-----+ +-------+ +-----+ * | | | * | LE CIS Create | | * |-------------------------->| | * | | | * | | (FEAT unsupported) | * | | | * | | | * | LE CIS ESTABLISHED | | * | (rem feat unsupported) | | * |<--------------------------| | */ ZTEST(cis_create, test_cc_create_central_rem_unsupported) { struct ll_conn_iso_stream *cis; struct node_rx_pdu *ntf; uint8_t err; struct node_rx_conn_iso_estab cis_estab = { .cis_handle = 0x00, .status = BT_HCI_ERR_UNSUPP_REMOTE_FEATURE }; /* Prepare mocked call to ll_conn_iso_stream_get() */ ll_conn_iso_stream_get_fake.return_val = &cis_mock; /* Role */ test_set_role(&conn, BT_HCI_ROLE_CENTRAL); /* Connect */ ull_cp_state_set(&conn, ULL_CP_CONNECTED); conn.llcp.fex.valid = 1; cis = ll_conn_iso_stream_get(LL_CIS_HANDLE_BASE); cis->lll.acl_handle = conn.lll.handle; err = ull_cp_cis_create(&conn, cis); zassert_equal(err, BT_HCI_ERR_SUCCESS); /* Prepare */ event_prepare(&conn); /* Done */ event_done(&conn); /* Prepare */ event_prepare(&conn); /* There should be excactly one host notification * with status BT_HCI_ERR_UNSUPP_REMOTE_FEATURE */ ut_rx_node(NODE_CIS_ESTABLISHED, &ntf, &cis_estab); ut_rx_q_is_empty(); /* Done */ event_done(&conn); zassert_equal(llcp_ctx_buffers_free(), test_ctx_buffers_cnt(), "Free CTX buffers %d", llcp_ctx_buffers_free()); } /* * Central-initiated CIS Create procedure. * Central requests CIS, peripheral accepts * * +-----+ +-------+ +-----+ * | UT | | LL_C | | LT | * +-----+ +-------+ +-----+ * | | | * | LE CIS Create | | * |-------------------------->| | * | | LL_CIS_REQ | * | |-------------------------->| * | | | * | | LL_CIS_RSP | * | |<--------------------------| * | | | * | | | * | | LL_CIS_IND | * | |-------------------------->| * | | | * | | | * | | | * | | | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * | | | * | LE CIS ESTABLISHED | | * |<--------------------------| | */ ZTEST(cis_create, test_cc_create_central_rem_accept) { struct pdu_data_llctrl_cis_rsp remote_cis_rsp = { .cis_offset_max = { 0, 0, 0}, .cis_offset_min = { 0, 0, 0}, .conn_event_count = 13 }; struct node_rx_conn_iso_estab cis_estab = { .cis_handle = 0x00, .status = BT_HCI_ERR_SUCCESS }; struct ll_conn_iso_stream *cis; struct node_rx_pdu *ntf; struct node_tx *tx; uint8_t err; /* Prepare mocked call to ll_conn_iso_stream_get() */ ll_conn_iso_stream_get_fake.return_val = &cis_mock; /* Role */ test_set_role(&conn, BT_HCI_ROLE_CENTRAL); /* Connect */ ull_cp_state_set(&conn, ULL_CP_CONNECTED); conn.llcp.fex.valid = 1; conn.llcp.fex.features_peer |= BIT64(BT_LE_FEAT_BIT_CIS_PERIPHERAL); /* Setup default CIS/CIG parameters */ cis = ll_conn_iso_stream_get(LL_CIS_HANDLE_BASE); cis->lll.acl_handle = conn.lll.handle; cis->group->cig_id = local_cis_req.cig_id; cis->cis_id = local_cis_req.cis_id; cis->lll.tx.phy = local_cis_req.c_phy; cis->lll.rx.phy = local_cis_req.p_phy; cis->group->c_sdu_interval = 0; cis->group->p_sdu_interval = 0; cis->lll.tx.max_pdu = MAX_xDU; cis->lll.rx.max_pdu = MAX_xDU; cis->c_max_sdu = MAX_xDU; cis->p_max_sdu = MAX_xDU; cis->group->iso_interval = local_cis_req.iso_interval; cis->framed = 0; cis->lll.nse = local_cis_req.nse; cis->lll.sub_interval = 0; cis->lll.tx.bn = local_cis_req.c_bn; cis->lll.rx.bn = local_cis_req.p_bn; cis->lll.tx.ft = local_cis_req.c_ft; cis->lll.rx.ft = local_cis_req.p_ft; err = ull_cp_cis_create(&conn, cis); zassert_equal(err, BT_HCI_ERR_SUCCESS); /* Prepare */ event_prepare(&conn); /* Tx Queue should have one LL Control PDU */ lt_rx(LL_CIS_REQ, &conn, &tx, &local_cis_req); lt_rx_q_is_empty(&conn); /* Done */ event_done(&conn); /* Prepare */ event_prepare(&conn); /* Rx */ lt_tx(LL_CIS_RSP, &conn, &remote_cis_rsp); /* Done */ event_done(&conn); /* Prepare */ event_prepare(&conn); /* Tx Queue should have one LL Control PDU */ lt_rx(LL_CIS_IND, &conn, &tx, &local_cis_ind); lt_rx_q_is_empty(&conn); /* Done */ event_done(&conn); /* */ while (!is_instant_reached(&conn, remote_cis_rsp.conn_event_count)) { /* Prepare */ event_prepare(&conn); /* Tx Queue should NOT have a LL Control PDU */ lt_rx_q_is_empty(&conn); /* Done */ event_done(&conn); /* There should NOT be a host notification */ ut_rx_q_is_empty(); } /* Prepare */ event_prepare(&conn); /* Done */ event_done(&conn); /* Emulate CIS becoming established */ ull_cp_cc_established(&conn, 0); /* Prepare */ event_prepare(&conn); /* Tx Queue should NOT have a LL Control PDU */ lt_rx_q_is_empty(&conn); /* Done */ event_done(&conn); /* Prepare */ event_prepare(&conn); /* There should be excactly one host notification */ ut_rx_node(NODE_CIS_ESTABLISHED, &ntf, &cis_estab); ut_rx_q_is_empty(); /* Done */ event_done(&conn); zassert_equal(llcp_ctx_buffers_free(), test_ctx_buffers_cnt(), "Free CTX buffers %d", llcp_ctx_buffers_free()); } /* * Central-initiated CIS Create procedure. * Central requests CIS, peripheral rejects with 'unsupported remote feature' * * +-----+ +-------+ +-----+ * | UT | | LL_C | | LT | * +-----+ +-------+ +-----+ * | | | * | LE CIS Create | | * |-------------------------->| | * | | LL_CIS_REQ | * | |-------------------------->| * | | | * | | LL_REJECT_EXT_IND | * | | (unsupported remote feat) | * | |<--------------------------| * | | | * | | | * | | | * | | | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ * | | | * | LE CIS ESTABLISHED | | * |<--------------------------| | */ ZTEST(cis_create, test_cc_create_central_rem_reject) { struct node_rx_conn_iso_estab cis_estab = { .cis_handle = 0x00, .status = BT_HCI_ERR_UNSUPP_REMOTE_FEATURE }; struct pdu_data_llctrl_reject_ext_ind remote_reject = { .error_code = BT_HCI_ERR_UNSUPP_REMOTE_FEATURE, .reject_opcode = PDU_DATA_LLCTRL_TYPE_CIS_REQ }; struct ll_conn_iso_stream *cis; struct node_rx_pdu *ntf; struct node_tx *tx; uint8_t err; /* Prepare mocked call to ll_conn_iso_stream_get() */ ll_conn_iso_stream_get_fake.return_val = &cis_mock; /* Role */ test_set_role(&conn, BT_HCI_ROLE_CENTRAL); /* Connect */ ull_cp_state_set(&conn, ULL_CP_CONNECTED); conn.llcp.fex.valid = 1; conn.llcp.fex.features_peer |= BIT64(BT_LE_FEAT_BIT_CIS_PERIPHERAL); /* Setup default CIS/CIG parameters */ cis = ll_conn_iso_stream_get(LL_CIS_HANDLE_BASE); cis->lll.acl_handle = conn.lll.handle; cis->group->cig_id = local_cis_req.cig_id; cis->cis_id = local_cis_req.cis_id; cis->lll.tx.phy = local_cis_req.c_phy; cis->lll.rx.phy = local_cis_req.p_phy; cis->group->c_sdu_interval = 0; cis->group->p_sdu_interval = 0; cis->lll.tx.max_pdu = MAX_xDU; cis->lll.rx.max_pdu = MAX_xDU; cis->c_max_sdu = MAX_xDU; cis->p_max_sdu = MAX_xDU; cis->group->iso_interval = local_cis_req.iso_interval; cis->framed = 0; cis->lll.nse = local_cis_req.nse; cis->lll.sub_interval = 0; cis->lll.tx.bn = local_cis_req.c_bn; cis->lll.rx.bn = local_cis_req.p_bn; cis->lll.tx.ft = local_cis_req.c_ft; cis->lll.rx.ft = local_cis_req.p_ft; err = ull_cp_cis_create(&conn, cis); zassert_equal(err, BT_HCI_ERR_SUCCESS); /* Prepare */ event_prepare(&conn); /* Tx Queue should have one LL Control PDU */ lt_rx(LL_CIS_REQ, &conn, &tx, &local_cis_req); lt_rx_q_is_empty(&conn); /* Done */ event_done(&conn); /* Prepare */ event_prepare(&conn); /* Rx */ lt_tx(LL_REJECT_EXT_IND, &conn, &remote_reject); /* Done */ event_done(&conn); /* Prepare */ event_prepare(&conn); /* There should be excactly one host notification */ ut_rx_node(NODE_CIS_ESTABLISHED, &ntf, &cis_estab); ut_rx_q_is_empty(); zassert_equal(conn.llcp.fex.features_peer & BIT64(BT_LE_FEAT_BIT_CIS_PERIPHERAL), 0); /* Done */ event_done(&conn); zassert_equal(llcp_ctx_buffers_free(), test_ctx_buffers_cnt(), "Free CTX buffers %d", llcp_ctx_buffers_free()); } ZTEST_SUITE(cis_create, NULL, NULL, cis_create_setup, NULL, NULL);