/* Copied from tbf.cpp * * Copyright (C) 2012 Ivan Klyuchnikov * Copyright (C) 2012 Andreas Eversberg * Copyright (C) 2013 by Holger Hans Peter Freyther * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "pcu_utils.h" #include "alloc_algo.h" extern "C" { #include #include #include #include #include #include #include #include #include #include #include "coding_scheme.h" } #include #include /* After receiving these frames, we send ack/nack. */ #define SEND_ACK_AFTER_FRAMES 20 extern void *tall_pcu_ctx; static const struct rate_ctr_desc tbf_ul_gprs_ctr_description[] = { { "gprs:uplink:cs1", "CS1 " }, { "gprs:uplink:cs2", "CS2 " }, { "gprs:uplink:cs3", "CS3 " }, { "gprs:uplink:cs4", "CS4 " }, }; static const struct rate_ctr_desc tbf_ul_egprs_ctr_description[] = { { "egprs:uplink:mcs1", "MCS1 " }, { "egprs:uplink:mcs2", "MCS2 " }, { "egprs:uplink:mcs3", "MCS3 " }, { "egprs:uplink:mcs4", "MCS4 " }, { "egprs:uplink:mcs5", "MCS5 " }, { "egprs:uplink:mcs6", "MCS6 " }, { "egprs:uplink:mcs7", "MCS7 " }, { "egprs:uplink:mcs8", "MCS8 " }, { "egprs:uplink:mcs9", "MCS9 " }, }; static const struct rate_ctr_group_desc tbf_ul_gprs_ctrg_desc = { "tbf:gprs", "Data Blocks", OSMO_STATS_CLASS_SUBSCRIBER, ARRAY_SIZE(tbf_ul_gprs_ctr_description), tbf_ul_gprs_ctr_description, }; static const struct rate_ctr_group_desc tbf_ul_egprs_ctrg_desc = { "tbf:egprs", "Data Blocks", OSMO_STATS_CLASS_SUBSCRIBER, ARRAY_SIZE(tbf_ul_egprs_ctr_description), tbf_ul_egprs_ctr_description, }; gprs_rlcmac_ul_tbf::~gprs_rlcmac_ul_tbf() { osmo_fsm_inst_free(ul_ack_fsm.fi); ul_ack_fsm.fi = NULL; rate_ctr_group_free(m_ul_egprs_ctrs); rate_ctr_group_free(m_ul_gprs_ctrs); /* ~gprs_rlcmac_tbf() is called automatically upon return */ } static int ul_tbf_dtor(struct gprs_rlcmac_ul_tbf *tbf) { tbf->~gprs_rlcmac_ul_tbf(); return 0; } /* Generic function to alloc a UL TBF, later configured to be assigned either over CCCH or PACCH */ struct gprs_rlcmac_ul_tbf *ul_tbf_alloc(struct gprs_rlcmac_bts *bts, struct GprsMs *ms) { struct gprs_rlcmac_ul_tbf *tbf; OSMO_ASSERT(ms != NULL); LOGPMS(ms, DTBF, LOGL_DEBUG, "********** UL-TBF starts here **********\n"); LOGPMS(ms, DTBF, LOGL_INFO, "Allocating UL TBF\n"); tbf = talloc(tall_pcu_ctx, struct gprs_rlcmac_ul_tbf); if (!tbf) return NULL; talloc_set_destructor(tbf, ul_tbf_dtor); new (tbf) gprs_rlcmac_ul_tbf(bts, ms); bts_do_rate_ctr_inc(tbf->bts, CTR_TBF_UL_ALLOCATED); return tbf; } gprs_rlcmac_ul_tbf::gprs_rlcmac_ul_tbf(struct gprs_rlcmac_bts *bts_, GprsMs *ms) : gprs_rlcmac_tbf(bts_, ms, GPRS_RLCMAC_UL_TBF), m_rx_counter(0), m_contention_resolution_done(true), m_ul_gprs_ctrs(NULL), m_ul_egprs_ctrs(NULL) { memset(&m_usf, USF_INVALID, sizeof(m_usf)); memset(&state_fsm, 0, sizeof(state_fsm)); state_fsm.ul_tbf = this; state_fi = osmo_fsm_inst_alloc(&tbf_ul_fsm, this, &state_fsm, LOGL_INFO, NULL); OSMO_ASSERT(state_fi); memset(&ul_ack_fsm, 0, sizeof(ul_ack_fsm)); ul_ack_fsm.tbf = this; ul_ack_fsm.fi = osmo_fsm_inst_alloc(&tbf_ul_ack_fsm, this, &ul_ack_fsm, LOGL_INFO, NULL); m_ul_egprs_ctrs = rate_ctr_group_alloc(this, &tbf_ul_egprs_ctrg_desc, m_ctrs->idx); OSMO_ASSERT(m_ul_egprs_ctrs); m_ul_gprs_ctrs = rate_ctr_group_alloc(this, &tbf_ul_gprs_ctrg_desc, m_ctrs->idx); OSMO_ASSERT(m_ul_gprs_ctrs); /* This has to be called in child constructor because enable_egprs() * uses the window() virtual function which is dependent on subclass. */ if (ms_mode(m_ms) != GPRS) enable_egprs(); } /* * Store received block data in LLC message(s) and forward to SGSN * if complete. */ int gprs_rlcmac_ul_tbf::assemble_forward_llc(const gprs_rlc_data *_data) { const uint8_t *data = _data->block; uint8_t len = _data->len; const struct gprs_rlc_data_block_info *rdbi = &_data->block_info; enum CodingScheme cs = _data->cs_last; Decoding::RlcData frames[16], *frame; int i, num_frames = 0; uint32_t dummy_tlli; LOGPTBFUL(this, LOGL_DEBUG, "Assembling frames: (len=%d)\n", len); num_frames = Decoding::rlc_data_from_ul_data( rdbi, cs, data, &(frames[0]), ARRAY_SIZE(frames), &dummy_tlli); /* create LLC frames */ for (i = 0; i < num_frames; i++) { frame = frames + i; if (frame->length) { bts_do_rate_ctr_add(bts, CTR_RLC_UL_PAYLOAD_BYTES, frame->length); LOGPTBFUL(this, LOGL_DEBUG, "Frame %d " "starts at offset %d, " "length=%d, is_complete=%d\n", i + 1, frame->offset, frame->length, frame->is_complete); llc_append_frame(&m_llc, data + frame->offset, frame->length); llc_consume(&m_llc, frame->length); } if (frame->is_complete) { /* send frame to SGSN */ LOGPTBFUL(this, LOGL_DEBUG, "complete UL frame len=%d\n", llc_frame_length(&m_llc)); snd_ul_ud(); bts_do_rate_ctr_add(bts, CTR_LLC_UL_BYTES, llc_frame_length(&m_llc)); llc_reset(&m_llc); } } return 0; } /* 3GPP TS 44.060 sec 7a.2.1 Contention Resolution */ void gprs_rlcmac_ul_tbf::contention_resolution_start() { /* 3GPP TS 44.018 sec 11.1.2 Timers on the network side: "This timer is * started when a temporary block flow is allocated with an IMMEDIATE * ASSIGNMENT or an IMMEDIATE PACKET ASSIGNMENT or an EC IMMEDIATE * ASSIGNMENT TYPE 1 message during a packet access procedure. It is * stopped when the mobile station has correctly seized the temporary * block flow." * In our code base, it means we want to do contention resolution * timeout only for one-phase packet access, since two-phase is handled * through SBA structs, which are freed by the PDCH UL Controller if the * single allocated block is lost. */ m_contention_resolution_done = false; T_START(this, T3141, 3141, "Contention resolution (UL-TBF, CCCH)", true); } void gprs_rlcmac_ul_tbf::contention_resolution_success() { /* now we must set this flag, so we are allowed to assign downlink * TBF on PACCH. it is only allowed when TLLI is acknowledged * (3GPP TS 44.060 sec 7.1.3.1). */ m_contention_resolution_done = true; /* 3GPP TS 44.018 3.5.2.1.4 Packet access completion: The one phase packet access procedure is completed at a successful contention resolution. The mobile station has entered the packet transfer mode. Timer T3141 is stopped on the network side */ t_stop(T3141, "Contention resolution success (UL-TBF, CCCH)"); bts_do_rate_ctr_inc(bts, CTR_IMMEDIATE_ASSIGN_UL_TBF_CONTENTION_RESOLUTION_SUCCESS); /* Check if we can create a DL TBF to start sending the enqueued * data. Otherwise it will be triggered later when it is reachable * again. */ if (ms_need_dl_tbf(ms()) && !tbf_ul_ack_waiting_cnf_final_ack(this)) ms_new_dl_tbf_assigned_on_pacch(ms(), this); } /*! \brief receive data from PDCH/L1 */ int gprs_rlcmac_ul_tbf::rcv_data_block_acknowledged( const struct gprs_rlc_data_info *rlc, uint8_t *data, struct pcu_l1_meas *meas) { const struct gprs_rlc_data_block_info *rdbi; struct gprs_rlc_data *block; int8_t rssi = meas->have_rssi ? meas->rssi : 0; const uint16_t ws = m_window.ws(); LOGPTBFUL(this, LOGL_DEBUG, "UL DATA TFI=%d received (V(Q)=%d .. " "V(R)=%d)\n", rlc->tfi, this->m_window.v_q(), this->m_window.v_r()); if (tbf_state(this) == TBF_ST_RELEASING) { /* This may happen if MAX_N3101 is hit previously, moving the UL * TBF to RELEASING state. Since we have an fn-advance where DL * blocks are scheduled in advance, we may have requested USF for * this UL TBF before triggering and hence we are now receiving a * UL block from it. If this is the case, simply ignore the block. */ LOGPTBFUL(this, LOGL_INFO, "UL DATA TFI=%d received (V(Q)=%d .. V(R)=%d) while in RELEASING state, discarding\n", rlc->tfi, this->m_window.v_q(), this->m_window.v_r()); return 0; } /* process RSSI */ gprs_rlcmac_rssi(this, rssi); /* store measurement values */ ms_update_l1_meas(ms(), meas); uint32_t new_tlli = GSM_RESERVED_TMSI; unsigned int block_idx; /* Increment RX-counter */ this->m_rx_counter++; update_coding_scheme_counter_ul(rlc->cs); /* Loop over num_blocks */ for (block_idx = 0; block_idx < rlc->num_data_blocks; block_idx++) { int num_chunks; uint8_t *rlc_data; rdbi = &rlc->block_info[block_idx]; LOGPTBFUL(this, LOGL_DEBUG, "Got %s RLC data block: CV=%d, BSN=%d, SPB=%d, PI=%d, E=%d, TI=%d, bitoffs=%d\n", mcs_name(rlc->cs), rdbi->cv, rdbi->bsn, rdbi->spb, rdbi->pi, rdbi->e, rdbi->ti, rlc->data_offs_bits[block_idx]); /* Check whether the block needs to be decoded */ if (!m_window.is_in_window(rdbi->bsn)) { LOGPTBFUL(this, LOGL_DEBUG, "BSN %d out of window %d..%d (it's normal)\n", rdbi->bsn, m_window.v_q(), m_window.mod_sns(m_window.v_q() + ws - 1)); continue; } else if (m_window.m_v_n.is_received(rdbi->bsn)) { LOGPTBFUL(this, LOGL_DEBUG, "BSN %d already received\n", rdbi->bsn); continue; } /* Store block and meta info to BSN buffer */ LOGPTBFUL(this, LOGL_DEBUG, "BSN %d storing in window (%d..%d)\n", rdbi->bsn, m_window.v_q(), m_window.mod_sns(m_window.v_q() + ws - 1)); block = m_rlc.block(rdbi->bsn); OSMO_ASSERT(rdbi->data_len <= sizeof(block->block)); rlc_data = &(block->block[0]); if (rdbi->spb) { egprs_rlc_ul_reseg_bsn_state assemble_status; assemble_status = handle_egprs_ul_spb(rlc, block, data, block_idx); if (assemble_status != EGPRS_RESEG_DEFAULT) return 0; } else { block->block_info = *rdbi; block->cs_last = rlc->cs; block->len = Decoding::rlc_copy_to_aligned_buffer(rlc, block_idx, data, rlc_data); } LOGPTBFUL(this, LOGL_DEBUG, "data_length=%d, data=%s\n", block->len, osmo_hexdump(rlc_data, block->len)); /* Get/Handle TLLI */ if (rdbi->ti) { num_chunks = Decoding::rlc_data_from_ul_data( rdbi, rlc->cs, rlc_data, NULL, 0, &new_tlli); if (num_chunks < 0) { bts_do_rate_ctr_inc(bts, CTR_DECODE_ERRORS); LOGPTBFUL(this, LOGL_NOTICE, "Failed to decode TLLI of %s UL DATA TFI=%d.\n", mcs_name(rlc->cs), rlc->tfi); m_window.invalidate_bsn(rdbi->bsn); continue; } if (!this->is_tlli_valid()) { if (new_tlli == GSM_RESERVED_TMSI) { LOGPTBFUL(this, LOGL_NOTICE, "TLLI is 0x%08x within UL DATA?!?\n", new_tlli); m_window.invalidate_bsn(rdbi->bsn); continue; } LOGPTBFUL(this, LOGL_INFO, "Decoded premier TLLI=0x%08x of UL DATA TFI=%d.\n", new_tlli, rlc->tfi); ms_update_announced_tlli(ms(), new_tlli); osmo_fsm_inst_dispatch(this->state_fi, TBF_EV_FIRST_UL_DATA_RECVD, NULL); } else if (new_tlli != GSM_RESERVED_TMSI && new_tlli != tlli()) { LOGPTBFUL(this, LOGL_NOTICE, "Decoded TLLI=%08x mismatch on UL DATA TFI=%d. (Ignoring due to contention resolution)\n", new_tlli, rlc->tfi); m_window.invalidate_bsn(rdbi->bsn); continue; } } else if (!is_tlli_valid()) { LOGPTBFUL(this, LOGL_NOTICE, "Missing TLLI within UL DATA.\n"); m_window.invalidate_bsn(rdbi->bsn); continue; } m_window.receive_bsn(rdbi->bsn); } /* Raise V(Q) if possible, and retrieve LLC frames from blocks. * This is looped until there is a gap (non received block) or * the window is empty.*/ const uint16_t v_q_beg = m_window.v_q(); const uint16_t count = m_window.raise_v_q(); /* Retrieve LLC frames from blocks that are ready */ for (uint16_t i = 0; i < count; ++i) { uint16_t index = m_window.mod_sns(v_q_beg + i); assemble_forward_llc(m_rlc.block(index)); } /* Last frame in buffer: */ block = m_rlc.block(m_window.mod_sns(m_window.v_r() - 1)); rdbi = &block->block_info; /* Check if we already received all data TBF had to send: */ if (this->state_is(TBF_ST_FLOW) /* still in flow state */ && this->m_window.v_q() == this->m_window.v_r() /* if complete */ && block->len) { /* if there was ever a last block received */ LOGPTBFUL(this, LOGL_DEBUG, "No gaps in received block, last block: BSN=%d CV=%d\n", rdbi->bsn, rdbi->cv); if (rdbi->cv == 0) { LOGPTBFUL(this, LOGL_DEBUG, "Finished with UL TBF\n"); osmo_fsm_inst_dispatch(this->state_fi, TBF_EV_LAST_UL_DATA_RECVD, NULL); /* Reset N3103 counter. */ this->n_reset(N3103); } } /* If TLLI is included or if we received half of the window, we send * an ack/nack */ maybe_schedule_uplink_acknack(rlc, block->len && rdbi->cv == 0); return 0; } void gprs_rlcmac_ul_tbf::maybe_schedule_uplink_acknack( const gprs_rlc_data_info *rlc, bool countdown_finished) { bool require_ack = false; bool have_ti = rlc->block_info[0].ti || (rlc->num_data_blocks > 1 && rlc->block_info[1].ti); if (rlc->si) { require_ack = true; LOGPTBFUL(this, LOGL_NOTICE, "Scheduling Ack/Nack, because MS is stalled.\n"); } if (have_ti) { require_ack = true; LOGPTBFUL(this, LOGL_DEBUG, "Scheduling Ack/Nack, because TLLI is included.\n"); } if (countdown_finished) { require_ack = true; if (state_is(TBF_ST_FLOW)) LOGPTBFUL(this, LOGL_DEBUG, "Scheduling Ack/Nack, because some data is missing and last block has CV==0.\n"); else if (state_is(TBF_ST_FINISHED)) LOGPTBFUL(this, LOGL_DEBUG, "Scheduling final Ack/Nack, because all data was received and last block has CV==0.\n"); } if ((m_rx_counter % SEND_ACK_AFTER_FRAMES) == 0) { require_ack = true; LOGPTBFUL(this, LOGL_DEBUG, "Scheduling Ack/Nack, because %d frames received.\n", SEND_ACK_AFTER_FRAMES); } if (!require_ack) return; osmo_fsm_inst_dispatch(this->ul_ack_fsm.fi, TBF_UL_ACK_EV_SCHED_ACK, NULL); } /* Send Uplink unit-data to SGSN. */ int gprs_rlcmac_ul_tbf::snd_ul_ud() { uint8_t qos_profile[3]; struct msgb *llc_pdu; unsigned msg_len = NS_HDR_LEN + BSSGP_HDR_LEN + llc_frame_length(&m_llc); struct bssgp_bvc_ctx *bctx = bts->pcu->bssgp.bctx; LOGP(DBSSGP, LOGL_INFO, "LLC [PCU -> SGSN] %s len=%d\n", tbf_name(this), llc_frame_length(&m_llc)); if (!bctx) { LOGP(DBSSGP, LOGL_ERROR, "No bctx\n"); llc_reset_frame_space(&m_llc); return -EIO; } llc_pdu = msgb_alloc_headroom(msg_len, msg_len,"llc_pdu"); uint8_t *buf = msgb_push(llc_pdu, TL16V_GROSS_LEN(sizeof(uint8_t)*llc_frame_length(&m_llc))); tl16v_put(buf, BSSGP_IE_LLC_PDU, sizeof(uint8_t)*llc_frame_length(&m_llc), m_llc.frame); qos_profile[0] = QOS_PROFILE >> 16; qos_profile[1] = QOS_PROFILE >> 8; qos_profile[2] = QOS_PROFILE; bssgp_tx_ul_ud(bctx, tlli(), qos_profile, llc_pdu); llc_reset_frame_space(&m_llc); return 0; } egprs_rlc_ul_reseg_bsn_state gprs_rlcmac_ul_tbf::handle_egprs_ul_second_seg( const struct gprs_rlc_data_info *rlc, struct gprs_rlc_data *block, uint8_t *data, const uint8_t block_idx) { const gprs_rlc_data_block_info *rdbi = &rlc->block_info[block_idx]; union split_block_status *spb_status = &block->spb_status; uint8_t *rlc_data = &block->block[0]; bts_do_rate_ctr_inc(bts, CTR_SPB_UL_SECOND_SEGMENT); if (spb_status->block_status_ul & EGPRS_RESEG_FIRST_SEG_RXD) { LOGPTBFUL(this, LOGL_DEBUG, "Second seg is received first seg is already present set the status to complete\n"); spb_status->block_status_ul = EGPRS_RESEG_DEFAULT; block->len += Decoding::rlc_copy_to_aligned_buffer(rlc, block_idx, data, rlc_data + block->len); block->block_info.data_len += rdbi->data_len; } else if (spb_status->block_status_ul == EGPRS_RESEG_DEFAULT) { LOGPTBFUL(this, LOGL_DEBUG, "Second seg is received first seg is not received set the status to second seg received\n"); block->len = Decoding::rlc_copy_to_aligned_buffer(rlc, block_idx, data, rlc_data + rlc->block_info[block_idx].data_len); spb_status->block_status_ul = EGPRS_RESEG_SECOND_SEG_RXD; block->block_info = *rdbi; } return spb_status->block_status_ul; } egprs_rlc_ul_reseg_bsn_state gprs_rlcmac_ul_tbf::handle_egprs_ul_first_seg( const struct gprs_rlc_data_info *rlc, struct gprs_rlc_data *block, uint8_t *data, const uint8_t block_idx) { const gprs_rlc_data_block_info *rdbi = &rlc->block_info[block_idx]; uint8_t *rlc_data = &block->block[0]; union split_block_status *spb_status = &block->spb_status; bts_do_rate_ctr_inc(bts, CTR_SPB_UL_FIRST_SEGMENT); if (spb_status->block_status_ul & EGPRS_RESEG_SECOND_SEG_RXD) { LOGPTBFUL(this, LOGL_DEBUG, "First seg is received second seg is already present set the status to complete\n"); block->len += Decoding::rlc_copy_to_aligned_buffer(rlc, block_idx, data, rlc_data); block->block_info.data_len = block->len; spb_status->block_status_ul = EGPRS_RESEG_DEFAULT; } else if (spb_status->block_status_ul == EGPRS_RESEG_DEFAULT) { LOGPTBFUL(this, LOGL_DEBUG, "First seg is received second seg is not received set the status to first seg received\n"); spb_status->block_status_ul = EGPRS_RESEG_FIRST_SEG_RXD; block->len = Decoding::rlc_copy_to_aligned_buffer(rlc, block_idx, data, rlc_data); block->block_info = *rdbi; } return spb_status->block_status_ul; } egprs_rlc_ul_reseg_bsn_state gprs_rlcmac_ul_tbf::handle_egprs_ul_spb( const struct gprs_rlc_data_info *rlc, struct gprs_rlc_data *block, uint8_t *data, const uint8_t block_idx) { const gprs_rlc_data_block_info *rdbi = &rlc->block_info[block_idx]; LOGPTBFUL(this, LOGL_DEBUG, "Got SPB(%d) cs(%s) data block with BSN (%d), TFI(%d).\n", rdbi->spb, mcs_name(rlc->cs), rdbi->bsn, rlc->tfi); egprs_rlc_ul_reseg_bsn_state assemble_status = EGPRS_RESEG_INVALID; /* Section 10.4.8b of 44.060*/ if (rdbi->spb == 2) assemble_status = handle_egprs_ul_first_seg(rlc, block, data, block_idx); else if (rdbi->spb == 3) assemble_status = handle_egprs_ul_second_seg(rlc, block, data, block_idx); else { LOGPTBFUL(this, LOGL_ERROR, "spb(%d) Not supported SPB for this EGPRS configuration\n", rdbi->spb); } /* * When the block is successfully constructed out of segmented blocks * upgrade the MCS to the type 2 */ if (assemble_status == EGPRS_RESEG_DEFAULT) { switch (rlc->cs) { case MCS3 : block->cs_last = MCS6; LOGPTBFUL(this, LOGL_DEBUG, "Upgrading to MCS6\n"); break; case MCS2 : block->cs_last = MCS5; LOGPTBFUL(this, LOGL_DEBUG, "Upgrading to MCS5\n"); break; case MCS1 : LOGPTBFUL(this, LOGL_DEBUG, "Upgrading to MCS4\n"); block->cs_last = MCS4; break; default: LOGPTBFUL(this, LOGL_ERROR, "cs(%s) Error in Upgrading to higher MCS\n", mcs_name(rlc->cs)); break; } } return assemble_status; } void gprs_rlcmac_ul_tbf::update_coding_scheme_counter_ul(enum CodingScheme cs) { switch (cs) { case CS1: bts_do_rate_ctr_inc(bts, CTR_GPRS_UL_CS1); rate_ctr_inc(rate_ctr_group_get_ctr(m_ul_gprs_ctrs, TBF_CTR_GPRS_UL_CS1)); break; case CS2: bts_do_rate_ctr_inc(bts, CTR_GPRS_UL_CS2); rate_ctr_inc(rate_ctr_group_get_ctr(m_ul_gprs_ctrs, TBF_CTR_GPRS_UL_CS2)); break; case CS3: bts_do_rate_ctr_inc(bts, CTR_GPRS_UL_CS3); rate_ctr_inc(rate_ctr_group_get_ctr(m_ul_gprs_ctrs, TBF_CTR_GPRS_UL_CS3)); break; case CS4: bts_do_rate_ctr_inc(bts, CTR_GPRS_UL_CS4); rate_ctr_inc(rate_ctr_group_get_ctr(m_ul_gprs_ctrs, TBF_CTR_GPRS_UL_CS4)); break; case MCS1: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS1); rate_ctr_inc(rate_ctr_group_get_ctr(m_ul_egprs_ctrs, TBF_CTR_EGPRS_UL_MCS1)); break; case MCS2: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS2); rate_ctr_inc(rate_ctr_group_get_ctr(m_ul_egprs_ctrs, TBF_CTR_EGPRS_UL_MCS2)); break; case MCS3: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS3); rate_ctr_inc(rate_ctr_group_get_ctr(m_ul_egprs_ctrs, TBF_CTR_EGPRS_UL_MCS3)); break; case MCS4: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS4); rate_ctr_inc(rate_ctr_group_get_ctr(m_ul_egprs_ctrs, TBF_CTR_EGPRS_UL_MCS4)); break; case MCS5: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS5); rate_ctr_inc(rate_ctr_group_get_ctr(m_ul_egprs_ctrs, TBF_CTR_EGPRS_UL_MCS5)); break; case MCS6: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS6); rate_ctr_inc(rate_ctr_group_get_ctr(m_ul_egprs_ctrs, TBF_CTR_EGPRS_UL_MCS6)); break; case MCS7: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS7); rate_ctr_inc(rate_ctr_group_get_ctr(m_ul_egprs_ctrs, TBF_CTR_EGPRS_UL_MCS7)); break; case MCS8: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS8); rate_ctr_inc(rate_ctr_group_get_ctr(m_ul_egprs_ctrs, TBF_CTR_EGPRS_UL_MCS8)); break; case MCS9: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS9); rate_ctr_inc(rate_ctr_group_get_ctr(m_ul_egprs_ctrs, TBF_CTR_EGPRS_UL_MCS9)); break; default: LOGPTBFUL(this, LOGL_ERROR, "attempting to update rate counters for unsupported (M)CS %s\n", mcs_name(cs)); } } void gprs_rlcmac_ul_tbf::set_window_size() { const struct gprs_rlcmac_bts *b = bts; uint16_t ws = egprs_window_size(b, ul_slots()); LOGPTBFUL(this, LOGL_INFO, "setting EGPRS UL window size to %u, base(%u) slots(%u) ws_pdch(%u)\n", ws, bts->pcu->vty.ws_base, pcu_bitcount(ul_slots()), bts->pcu->vty.ws_pdch); m_window.set_ws(ws); } gprs_rlc_window *gprs_rlcmac_ul_tbf::window() { return &m_window; } void gprs_rlcmac_ul_tbf::apply_allocated_resources(const struct alloc_resources_res *res) { uint8_t ts; if (this->trx) llist_del(&this->m_trx_list.list); llist_add(&this->m_trx_list.list, &res->trx->ul_tbfs); this->trx = res->trx; this->upgrade_to_multislot = res->upgrade_to_multislot; for (ts = 0; ts < ARRAY_SIZE(trx->pdch); ts++) { struct gprs_rlcmac_pdch *pdch = &trx->pdch[ts]; OSMO_ASSERT(!this->pdch[pdch->ts_no]); if (!(res->ass_slots_mask & (1 << ts))) continue; LOGPTBFUL(this, LOGL_DEBUG, "Assigning TS=%u TFI=%d USF=%u\n", ts, res->tfi, res->usf[ts]); OSMO_ASSERT(res->usf[ts] >= 0); this->m_tfi = res->tfi; this->m_usf[pdch->ts_no] = res->usf[ts]; this->pdch[pdch->ts_no] = pdch; pdch->attach_tbf(this); } /* assign initial control ts */ tbf_assign_control_ts(this); /* res.ass_slots_mask == 0 -> special case for Rejected UL TBFs, * see ms_new_ul_tbf_rejected_pacch() */ if (res->ass_slots_mask != 0) { LOGPTBF(this, LOGL_INFO, "Allocated: trx = %d, ul_slots = %02x, dl_slots = %02x\n", this->trx->trx_no, ul_slots(), dl_slots()); if (tbf_is_egprs_enabled(this)) this->set_window_size(); } tbf_update_state_fsm_name(this); } void ul_tbf_apply_allocated_resources(struct gprs_rlcmac_ul_tbf *ul_tbf, const struct alloc_resources_res *res) { ul_tbf->apply_allocated_resources(res); } void gprs_rlcmac_ul_tbf::usf_timeout() { if (n_inc(N3101)) osmo_fsm_inst_dispatch(this->state_fi, TBF_EV_MAX_N3101, NULL); } struct gprs_rlcmac_ul_tbf *tbf_as_ul_tbf(struct gprs_rlcmac_tbf *tbf) { if (tbf && tbf->direction == GPRS_RLCMAC_UL_TBF) return static_cast(tbf); else return NULL; } const struct gprs_rlcmac_ul_tbf *tbf_as_ul_tbf_const(const struct gprs_rlcmac_tbf *tbf) { if (tbf && tbf->direction == GPRS_RLCMAC_UL_TBF) return static_cast(tbf); else return NULL; } void tbf_usf_timeout(struct gprs_rlcmac_ul_tbf *tbf) { tbf->usf_timeout(); } bool ul_tbf_contention_resolution_done(const struct gprs_rlcmac_ul_tbf *tbf) { return tbf->m_contention_resolution_done; } struct osmo_fsm_inst *tbf_ul_ack_fi(const struct gprs_rlcmac_ul_tbf *tbf) { return tbf->ul_ack_fsm.fi; } void ul_tbf_contention_resolution_start(struct gprs_rlcmac_ul_tbf *tbf) { tbf->contention_resolution_start(); } void ul_tbf_contention_resolution_success(struct gprs_rlcmac_ul_tbf *tbf) { return tbf->contention_resolution_success(); }