//----------------------------------------------------------------------------- void rlc_am_reestablish( const protocol_ctxt_t* const ctxt_pP, rlc_am_entity_t* const rlc_pP) //----------------------------------------------------------------------------- { /* * RLC re-establishment is performed upon request by RRC, and the function * is applicable for AM, UM and TM RLC entities. * When RRC indicates that an RLC entity should be re-established, the RLC entity shall: * - if it is an AM RLC entity: * - when possible, reassemble RLC SDUs from any byte segments of AMD PDUs with SN < VR(MR) in the * receiving side, remove RLC headers when doing so and deliver all reassembled RLC SDUs to upper layer in * ascending order of the RLC SN, if not delivered before; * - discard the remaining AMD PDUs and byte segments of AMD PDUs in the receiving side; * - discard all RLC SDUs and AMD PDUs in the transmitting side; * - discard all RLC control PDUs. * - stop and reset all timers; * - reset all state variables to their initial values. */ LOG_D(RLC, PROTOCOL_RLC_AM_CTXT_FMT"[AM REESTABLISH] RE-INIT STATE VARIABLES, BUFFERS, LISTS\n", PROTOCOL_RLC_AM_CTXT_ARGS(ctxt_pP,rlc_pP)); #warning TODO when possible reassemble RLC SDUs from any byte segments of AMD PDUs with SN inf VR(MR) list2_free(&rlc_pP->receiver_buffer); list_free(&rlc_pP->pdus_to_mac_layer); list_free(&rlc_pP->control_pdu_list); list_free(&rlc_pP->segmentation_pdu_list); // TX state variables rlc_pP->vt_a = 0; rlc_pP->vt_ms = rlc_pP->vt_a + RLC_AM_WINDOW_SIZE; rlc_pP->vt_s = 0; rlc_pP->poll_sn = 0; // TX counters rlc_pP->c_pdu_without_poll = 0; rlc_pP->c_byte_without_poll = 0; // RX state variables rlc_pP->vr_r = 0; rlc_pP->vr_mr = rlc_pP->vr_r + RLC_AM_WINDOW_SIZE; rlc_pP->vr_x = 0; rlc_pP->vr_ms = 0; rlc_pP->vr_h = 0; rlc_pP->last_frame_status_indication = 123456; // any value > 1 rlc_pP->first_retrans_pdu_sn = -1; rlc_pP->initialized = TRUE; }
//----------------------------------------------------------------------------- void rlc_am_cleanup( rlc_am_entity_t* const rlc_pP ) //----------------------------------------------------------------------------- { list2_free(&rlc_pP->receiver_buffer); list_free(&rlc_pP->pdus_to_mac_layer); list_free(&rlc_pP->control_pdu_list); list_free(&rlc_pP->segmentation_pdu_list); if (rlc_pP->output_sdu_in_construction != NULL) { free_mem_block(rlc_pP->output_sdu_in_construction); rlc_pP->output_sdu_in_construction = NULL; } unsigned int i; if (rlc_pP->input_sdus != NULL) { for (i=0; i < RLC_AM_SDU_CONTROL_BUFFER_SIZE; i++) { if (rlc_pP->input_sdus[i].mem_block != NULL) { free_mem_block(rlc_pP->input_sdus[i].mem_block); rlc_pP->input_sdus[i].mem_block = NULL; } } free(rlc_pP->input_sdus); rlc_pP->input_sdus = NULL; } pthread_mutex_destroy(&rlc_pP->lock_input_sdus); if (rlc_pP->pdu_retrans_buffer != NULL) { for (i=0; i < RLC_AM_PDU_RETRANSMISSION_BUFFER_SIZE; i++) { if (rlc_pP->pdu_retrans_buffer[i].mem_block != NULL) { free_mem_block(rlc_pP->pdu_retrans_buffer[i].mem_block); rlc_pP->pdu_retrans_buffer[i].mem_block = NULL; } } free(rlc_pP->pdu_retrans_buffer); rlc_pP->pdu_retrans_buffer = NULL; } memset(rlc_pP, 0, sizeof(rlc_am_entity_t)); }
//----------------------------------------------------------------------------- void umts_stop_all_timers (list2_t * atimer_listP) { //----------------------------------------------------------------------------- list2_free (atimer_listP); }