/* 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 #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, }; 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 *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); 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); 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_trx_list(tbf), &tbf->trx->ul_tbfs); bts_do_rate_ctr_inc(tbf->bts, CTR_TBF_UL_ALLOCATED); return tbf; } /* Alloc a UL TBF to be assigned over PACCH. Called when an MS requests to * create a new UL TBF during the end of life of a previous UL TBF (or an SBA). * In summary, this TBF is allocated as a consequence of receiving a "Pkt * Resource Req" or "Pkt Ctrl Ack" from the MS. * See TS 44.060 9.3.2.4.2 "Non-extended uplink TBF mode". */ gprs_rlcmac_ul_tbf *tbf_alloc_ul_pacch(struct gprs_rlcmac_bts *bts, GprsMs *ms, int8_t use_trx) { struct gprs_rlcmac_ul_tbf *tbf; tbf = tbf_alloc_ul_tbf(bts, ms, use_trx, false); if (!tbf) { LOGPMS(ms, DTBF, LOGL_NOTICE, "No PDCH resource\n"); /* Caller will most probably send a Imm Ass Reject after return */ return NULL; } /* Contention resolution is considered to be done since TLLI is known in MS: */ tbf->m_contention_resolution_done = 1; osmo_fsm_inst_dispatch(tbf->state_fsm.fi, TBF_EV_ASSIGN_ADD_PACCH, NULL); return tbf; } /* Alloc a UL TBF to be assigned over CCCH. Used by request of a "One phase * packet access", where MS requested only 1 PDCH TS (TS 44.018 Table 9.1.8.1). */ struct gprs_rlcmac_ul_tbf *tbf_alloc_ul_ccch(struct gprs_rlcmac_bts *bts, struct GprsMs *ms) { struct gprs_rlcmac_ul_tbf *tbf; tbf = tbf_alloc_ul_tbf(bts, ms, -1, true); if (!tbf) { LOGP(DTBF, LOGL_NOTICE, "No PDCH resource for Uplink TBF\n"); /* Caller will most probably send a Imm Ass Reject after return */ return NULL; } osmo_fsm_inst_dispatch(tbf->state_fsm.fi, TBF_EV_ASSIGN_ADD_CCCH, NULL); tbf->contention_resolution_start(); OSMO_ASSERT(tbf->ms()); return tbf; } /* Create a temporary dummy TBF to Tx a ImmAssReject if allocating a new one during * packet resource Request failed. This is similar as tbf_alloc_ul() but without * calling tbf->setup() (in charge of TFI/USF allocation), and reusing resources * from Packet Resource Request we received. See TS 44.060 sec 7.1.3.2.1 */ struct gprs_rlcmac_ul_tbf *handle_tbf_reject(struct gprs_rlcmac_bts *bts, GprsMs *ms, uint8_t trx_no, uint8_t ts) { struct gprs_rlcmac_ul_tbf *ul_tbf = NULL; struct gprs_rlcmac_trx *trx = &bts->trx[trx_no]; OSMO_ASSERT(ms); 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); ul_tbf->trx = trx; /* The only one TS is the common, control TS */ ul_tbf->first_ts = ts; ul_tbf->first_common_ts = ts; tbf_assign_control_ts(ul_tbf); 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; } tbf_update_state_fsm_name(ul_tbf); ms_attach_tbf(ms, ul_tbf); llist_add(tbf_trx_list((struct gprs_rlcmac_tbf *)ul_tbf), &trx->ul_tbfs); bts_do_rate_ctr_inc(ul_tbf->bts, CTR_TBF_UL_ALLOCATED); osmo_fsm_inst_dispatch(ul_tbf->state_fsm.fi, TBF_EV_ASSIGN_ADD_PACCH, NULL); osmo_fsm_inst_dispatch(ul_tbf->ul_ass_fsm.fi, TBF_UL_ASS_EV_SCHED_ASS_REJ, 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_ul_gprs_ctrs(NULL), m_ul_egprs_ctrs(NULL) { memset(&m_usf, USF_INVALID, sizeof(m_usf)); 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); } /* * 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; } 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. */ T_START(this, T3141, 3141, "Contention resolution (UL-TBF, CCCH)", true); } void gprs_rlcmac_ul_tbf::contention_resolution_success() { if (m_contention_resolution_done) return; /* 3GPP TS 44.060 sec 7a.2.1 Contention Resolution */ /* 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)"); /* 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; bts_do_rate_ctr_inc(bts, CTR_IMMEDIATE_ASSIGN_UL_TBF_CONTENTION_RESOLUTION_SUCCESS); } /*! \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()); /* 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.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); update_ms(new_tlli, GPRS_RLCMAC_UL_TBF); bts_pch_timer_stop(bts, ms()); } 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_fsm.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"); 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(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::usf_timeout() { if (n_inc(N3101)) osmo_fsm_inst_dispatch(this->state_fsm.fi, TBF_EV_MAX_N3101, NULL); } 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; } 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_success(struct gprs_rlcmac_ul_tbf *tbf) { return tbf->contention_resolution_success(); }