/* 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include #include #include #include #include #include #include #include #include #include #include #include "pcu_utils.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, }; static int ul_tbf_dtor(struct gprs_rlcmac_ul_tbf *tbf) { tbf->~gprs_rlcmac_ul_tbf(); return 0; } struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_tbf(struct gprs_rlcmac_bts *bts, GprsMs *ms, int8_t use_trx, bool single_slot) { struct gprs_rlcmac_ul_tbf *tbf; int rc; OSMO_ASSERT(ms != NULL); LOGP(DTBF, LOGL_DEBUG, "********** UL-TBF starts here **********\n"); LOGP(DTBF, LOGL_INFO, "Allocating UL TBF: MS_CLASS=%d/%d\n", ms_ms_class(ms), ms_egprs_ms_class(ms)); 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); rc = tbf->setup(use_trx, single_slot); /* if no resource */ if (rc < 0) { talloc_free(tbf); return NULL; } if (tbf->is_egprs_enabled()) tbf->set_window_size(); tbf->m_ul_egprs_ctrs = rate_ctr_group_alloc(tbf, &tbf_ul_egprs_ctrg_desc, tbf->m_ctrs->idx); tbf->m_ul_gprs_ctrs = rate_ctr_group_alloc(tbf, &tbf_ul_gprs_ctrg_desc, tbf->m_ctrs->idx); if (!tbf->m_ul_egprs_ctrs || !tbf->m_ul_gprs_ctrs) { LOGPTBF(tbf, LOGL_ERROR, "Couldn't allocate TBF UL counters\n"); talloc_free(tbf); return NULL; } llist_add_tail(tbf_bts_list(tbf), &bts->ul_tbfs); bts_do_rate_ctr_inc(tbf->bts, CTR_TBF_UL_ALLOCATED); return tbf; } gprs_rlcmac_ul_tbf *tbf_alloc_ul(struct gprs_rlcmac_bts *bts, GprsMs *ms, int8_t use_trx, uint32_t tlli) { struct gprs_rlcmac_ul_tbf *tbf; /* FIXME: Copy and paste with tbf_new_dl_assignment */ /* create new TBF, use same TRX as DL TBF */ /* use multislot class of downlink TBF */ tbf = tbf_alloc_ul_tbf(bts, ms, use_trx, false); if (!tbf) { LOGP(DTBF, LOGL_NOTICE, "No PDCH resource\n"); /* FIXME: send reject */ return NULL; } tbf->m_contention_resolution_done = 1; TBF_SET_ASS_ON(tbf, GPRS_RLCMAC_FLAG_PACCH, false); T_START(tbf, T3169, 3169, "allocation (UL-TBF)", true); tbf->update_ms(tlli, GPRS_RLCMAC_UL_TBF); OSMO_ASSERT(tbf->ms()); return tbf; } struct gprs_rlcmac_ul_tbf *handle_tbf_reject(struct gprs_rlcmac_bts *bts, GprsMs *ms, uint32_t tlli, uint8_t trx_no, uint8_t ts) { struct gprs_rlcmac_ul_tbf *ul_tbf = NULL; struct gprs_rlcmac_trx *trx = &bts->trx[trx_no]; if (!ms) ms = bts_alloc_ms(bts, 0, 0); ms_set_tlli(ms, tlli); ul_tbf = talloc(tall_pcu_ctx, struct gprs_rlcmac_ul_tbf); if (!ul_tbf) return ul_tbf; talloc_set_destructor(ul_tbf, ul_tbf_dtor); new (ul_tbf) gprs_rlcmac_ul_tbf(bts, ms); llist_add(tbf_bts_list((struct gprs_rlcmac_tbf *)ul_tbf), &bts->ul_tbfs); bts_do_rate_ctr_inc(ul_tbf->bts, CTR_TBF_UL_ALLOCATED); TBF_SET_ASS_ON(ul_tbf, GPRS_RLCMAC_FLAG_PACCH, false); ms_attach_tbf(ms, ul_tbf); ul_tbf->update_ms(tlli, GPRS_RLCMAC_UL_TBF); TBF_SET_ASS_STATE_UL(ul_tbf, GPRS_RLCMAC_UL_ASS_SEND_ASS_REJ); ul_tbf->control_ts = ts; ul_tbf->trx = trx; ul_tbf->m_ctrs = rate_ctr_group_alloc(ul_tbf, &tbf_ctrg_desc, next_tbf_ctr_group_id++); ul_tbf->m_ul_egprs_ctrs = rate_ctr_group_alloc(ul_tbf, &tbf_ul_egprs_ctrg_desc, ul_tbf->m_ctrs->idx); ul_tbf->m_ul_gprs_ctrs = rate_ctr_group_alloc(ul_tbf, &tbf_ul_gprs_ctrg_desc, ul_tbf->m_ctrs->idx); if (!ul_tbf->m_ctrs || !ul_tbf->m_ul_egprs_ctrs || !ul_tbf->m_ul_gprs_ctrs) { LOGPTBF(ul_tbf, LOGL_ERROR, "Cound not allocate TBF UL rate counters\n"); talloc_free(ul_tbf); return NULL; } return ul_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(0), m_final_ack_sent(0), m_ul_gprs_ctrs(NULL), m_ul_egprs_ctrs(NULL) { memset(&m_usf, 0, sizeof(m_usf)); } /* * 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); m_llc.append_frame(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)); m_llc.reset(); } } return 0; } bool gprs_rlcmac_ul_tbf::ctrl_ack_to_toggle() { if (check_n_clear(GPRS_RLCMAC_FLAG_TO_UL_ACK)) return true; /* GPRS_RLCMAC_FLAG_TO_UL_ACK was set, now cleared */ state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_UL_ACK); return false; /* GPRS_RLCMAC_FLAG_TO_UL_ACK was unset, now set */ } bool gprs_rlcmac_ul_tbf::handle_ctrl_ack() { /* check if this control ack belongs to packet uplink ack */ if (ul_ack_state_is(GPRS_RLCMAC_UL_ACK_WAIT_ACK)) { TBF_SET_ACK_STATE(this, GPRS_RLCMAC_UL_ACK_NONE); return true; } return false; } struct msgb *gprs_rlcmac_ul_tbf::create_ul_ack(uint32_t fn, uint8_t ts) { int final = (state_is(GPRS_RLCMAC_FINISHED)); struct msgb *msg; int rc; unsigned int rrbp = 0; uint32_t new_poll_fn = 0; if (final) { if (poll_scheduled() && ul_ack_state_is(GPRS_RLCMAC_UL_ACK_WAIT_ACK)) { LOGPTBFUL(this, LOGL_DEBUG, "Polling is already scheduled, so we must wait for the final uplink ack...\n"); return NULL; } rc = check_polling(fn, ts, &new_poll_fn, &rrbp); if (rc < 0) return NULL; } msg = msgb_alloc(23, "rlcmac_ul_ack"); if (!msg) return NULL; bitvec *ack_vec = bitvec_alloc(23, tall_pcu_ctx); if (!ack_vec) { msgb_free(msg); return NULL; } bitvec_unhex(ack_vec, DUMMY_VEC); Encoding::write_packet_uplink_ack(ack_vec, this, final, rrbp); bitvec_pack(ack_vec, msgb_put(msg, 23)); bitvec_free(ack_vec); /* now we must set this flag, so we are allowed to assign downlink * TBF on PACCH. it is only allowed when TLLI is acknowledged. */ m_contention_resolution_done = 1; if (final) { set_polling(new_poll_fn, ts, GPRS_RLCMAC_POLL_UL_ACK); /* waiting for final acknowledge */ m_final_ack_sent = 1; } else TBF_SET_ACK_STATE(this, GPRS_RLCMAC_UL_ACK_NONE); return msg; } /*! \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(); this->state_flags |= (1 << GPRS_RLCMAC_FLAG_UL_DATA); 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()); /* process RSSI */ gprs_rlcmac_rssi(this, rssi); /* store measurement values */ if (ms()) ms_update_l1_meas(ms(), meas); uint32_t new_tlli = GSM_RESERVED_TMSI; unsigned int block_idx; /* restart T3169 */ T_START(this, T3169, 3169, "acked (data)", true); /* 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]; bool need_rlc_data = false; 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)); } else if (m_window.is_received(rdbi->bsn)) { LOGPTBFUL(this, LOGL_DEBUG, "BSN %d already received\n", rdbi->bsn); } else { need_rlc_data = true; } if (!is_tlli_valid()) { if (!rdbi->ti) { LOGPTBFUL(this, LOGL_NOTICE, "Missing TLLI within UL DATA.\n"); continue; } need_rlc_data = true; } if (!need_rlc_data) 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); update_ms(new_tlli, GPRS_RLCMAC_UL_TBF); } 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; } } 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(GPRS_RLCMAC_FLOW) /* still in flow state */ && this->m_window.v_q() == this->m_window.v_r()) { /* if complete */ 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"); TBF_SET_STATE(this, GPRS_RLCMAC_FINISHED); /* 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, 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(GPRS_RLCMAC_FLOW)) LOGPTBFUL(this, LOGL_DEBUG, "Scheduling Ack/Nack, because some data is missing and last block has CV==0.\n"); else if (state_is(GPRS_RLCMAC_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; if (ul_ack_state_is(GPRS_RLCMAC_UL_ACK_NONE)) { /* trigger sending at next RTS */ TBF_SET_ACK_STATE(this, GPRS_RLCMAC_UL_ACK_SEND_ACK); } else { /* already triggered */ LOGPTBFUL(this, LOGL_DEBUG, "Sending Ack/Nack already scheduled, no need to re-schedule\n"); } } /* 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"); m_llc.reset_frame_space(); 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); m_llc.reset_frame_space(); 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(&m_ul_gprs_ctrs->ctr[TBF_CTR_GPRS_UL_CS1]); break; case CS2: bts_do_rate_ctr_inc(bts, CTR_GPRS_UL_CS2); rate_ctr_inc(&m_ul_gprs_ctrs->ctr[TBF_CTR_GPRS_UL_CS2]); break; case CS3: bts_do_rate_ctr_inc(bts, CTR_GPRS_UL_CS3); rate_ctr_inc(&m_ul_gprs_ctrs->ctr[TBF_CTR_GPRS_UL_CS3]); break; case CS4: bts_do_rate_ctr_inc(bts, CTR_GPRS_UL_CS4); rate_ctr_inc(&m_ul_gprs_ctrs->ctr[TBF_CTR_GPRS_UL_CS4]); break; case MCS1: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS1); rate_ctr_inc(&m_ul_egprs_ctrs->ctr[TBF_CTR_EGPRS_UL_MCS1]); break; case MCS2: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS2); rate_ctr_inc(&m_ul_egprs_ctrs->ctr[TBF_CTR_EGPRS_UL_MCS2]); break; case MCS3: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS3); rate_ctr_inc(&m_ul_egprs_ctrs->ctr[TBF_CTR_EGPRS_UL_MCS3]); break; case MCS4: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS4); rate_ctr_inc(&m_ul_egprs_ctrs->ctr[TBF_CTR_EGPRS_UL_MCS4]); break; case MCS5: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS5); rate_ctr_inc(&m_ul_egprs_ctrs->ctr[TBF_CTR_EGPRS_UL_MCS5]); break; case MCS6: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS6); rate_ctr_inc(&m_ul_egprs_ctrs->ctr[TBF_CTR_EGPRS_UL_MCS6]); break; case MCS7: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS7); rate_ctr_inc(&m_ul_egprs_ctrs->ctr[TBF_CTR_EGPRS_UL_MCS7]); break; case MCS8: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS8); rate_ctr_inc(&m_ul_egprs_ctrs->ctr[TBF_CTR_EGPRS_UL_MCS8]); break; case MCS9: bts_do_rate_ctr_inc(bts, CTR_EGPRS_UL_MCS9); rate_ctr_inc(&m_ul_egprs_ctrs->ctr[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; } struct gprs_rlcmac_ul_tbf *as_ul_tbf(struct gprs_rlcmac_tbf *tbf) { if (tbf && tbf->direction == GPRS_RLCMAC_UL_TBF) return static_cast(tbf); else return NULL; }