| /* Copied from gprs_bssgp_pcu.cpp |
| * |
| * Copyright (C) 2012 Ivan Klyuchnikov |
| * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu> |
| * 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 <new> |
| #include <sstream> |
| |
| #include <bts.h> |
| #include <tbf.h> |
| #include <tbf_dl.h> |
| #include <tbf_ul.h> |
| #include <rlc.h> |
| #include <encoding.h> |
| #include <gprs_rlcmac.h> |
| #include <gprs_debug.h> |
| #include <gprs_ms.h> |
| #include <pcu_utils.h> |
| #include <gprs_ms_storage.h> |
| #include <sba.h> |
| #include <pdch.h> |
| |
| extern "C" { |
| #include <osmocom/core/msgb.h> |
| #include <osmocom/core/utils.h> |
| #include <osmocom/core/talloc.h> |
| #include <osmocom/core/stats.h> |
| #include <osmocom/core/logging.h> |
| #include <osmocom/core/timer_compat.h> |
| #include <osmocom/core/bitvec.h> |
| #include <osmocom/core/rate_ctr.h> |
| #include <osmocom/gsm/protocol/gsm_04_08.h> |
| |
| #include "gsm_rlcmac.h" |
| #include "coding_scheme.h" |
| #include "nacc_fsm.h" |
| } |
| |
| #include <errno.h> |
| #include <string.h> |
| |
| extern void *tall_pcu_ctx; |
| |
| unsigned int next_tbf_ctr_group_id = 0; /* Incrementing group id */ |
| |
| static void tbf_timer_cb(void *_tbf); |
| |
| const struct value_string gprs_rlcmac_tbf_dl_ass_state_names[] = { |
| OSMO_VALUE_STRING(GPRS_RLCMAC_DL_ASS_NONE), |
| OSMO_VALUE_STRING(GPRS_RLCMAC_DL_ASS_SEND_ASS), |
| OSMO_VALUE_STRING(GPRS_RLCMAC_DL_ASS_WAIT_ACK), |
| { 0, NULL } |
| }; |
| |
| const struct value_string gprs_rlcmac_tbf_ul_ass_state_names[] = { |
| OSMO_VALUE_STRING(GPRS_RLCMAC_UL_ASS_NONE), |
| OSMO_VALUE_STRING(GPRS_RLCMAC_UL_ASS_SEND_ASS), |
| OSMO_VALUE_STRING(GPRS_RLCMAC_UL_ASS_SEND_ASS_REJ), |
| OSMO_VALUE_STRING(GPRS_RLCMAC_UL_ASS_WAIT_ACK), |
| { 0, NULL } |
| }; |
| |
| const struct value_string gprs_rlcmac_tbf_ul_ack_state_names[] = { |
| OSMO_VALUE_STRING(GPRS_RLCMAC_UL_ACK_NONE), |
| OSMO_VALUE_STRING(GPRS_RLCMAC_UL_ACK_SEND_ACK), /* send acknowledge on next RTS */ |
| OSMO_VALUE_STRING(GPRS_RLCMAC_UL_ACK_WAIT_ACK), /* wait for PACKET CONTROL ACK */ |
| { 0, NULL } |
| }; |
| |
| static const struct value_string tbf_counters_names[] = { |
| OSMO_VALUE_STRING(N3101), |
| OSMO_VALUE_STRING(N3103), |
| OSMO_VALUE_STRING(N3105), |
| { 0, NULL } |
| }; |
| |
| static const struct value_string tbf_timers_names[] = { |
| OSMO_VALUE_STRING(T0), |
| OSMO_VALUE_STRING(T3141), |
| OSMO_VALUE_STRING(T3169), |
| OSMO_VALUE_STRING(T3191), |
| OSMO_VALUE_STRING(T3193), |
| OSMO_VALUE_STRING(T3195), |
| { 0, NULL } |
| }; |
| |
| static const struct rate_ctr_desc tbf_ctr_description[] = { |
| { "rlc:nacked", "RLC Nacked " }, |
| }; |
| |
| const struct rate_ctr_group_desc tbf_ctrg_desc = { |
| "pcu:tbf", |
| "TBF Statistics", |
| OSMO_STATS_CLASS_SUBSCRIBER, |
| ARRAY_SIZE(tbf_ctr_description), |
| tbf_ctr_description, |
| }; |
| |
| gprs_rlcmac_tbf::Meas::Meas() : |
| rssi_sum(0), |
| rssi_num(0) |
| { |
| timespecclear(&rssi_tv); |
| } |
| |
| gprs_rlcmac_tbf::gprs_rlcmac_tbf(struct gprs_rlcmac_bts *bts_, GprsMs *ms, gprs_rlcmac_tbf_direction dir) : |
| direction(dir), |
| trx(NULL), |
| first_ts(0), |
| first_common_ts(0), |
| control_ts(0xff), |
| fT(0), |
| num_fT_exp(0), |
| was_releasing(0), |
| upgrade_to_multislot(0), |
| bts(bts_), |
| m_tfi(0), |
| m_created_ts(0), |
| m_ctrs(NULL), |
| m_ms(ms), |
| dl_ass_state(GPRS_RLCMAC_DL_ASS_NONE), |
| ul_ass_state(GPRS_RLCMAC_UL_ASS_NONE), |
| ul_ack_state(GPRS_RLCMAC_UL_ACK_NONE), |
| m_egprs_enabled(false) |
| { |
| /* The classes of these members do not have proper constructors yet. |
| * Just set them to 0 like talloc_zero did */ |
| memset(&pdch, 0, sizeof(pdch)); |
| memset(&Tarr, 0, sizeof(Tarr)); |
| memset(&Narr, 0, sizeof(Narr)); |
| |
| memset(&m_ms_list, 0, sizeof(m_ms_list)); |
| m_ms_list.entry = this; |
| |
| memset(&m_trx_list, 0, sizeof(m_trx_list)); |
| m_trx_list.entry = this; |
| |
| memset(&state_fsm, 0, sizeof(state_fsm)); |
| state_fsm.tbf = this; |
| state_fsm.fi = osmo_fsm_inst_alloc(&tbf_fsm, this, &state_fsm, LOGL_INFO, NULL); |
| |
| m_rlc.init(); |
| m_llc.init(); |
| |
| m_name_buf[0] = '\0'; |
| } |
| |
| |
| gprs_rlcmac_tbf::~gprs_rlcmac_tbf() |
| { |
| osmo_fsm_inst_free(state_fsm.fi); |
| state_fsm.fi = NULL; |
| } |
| |
| uint32_t gprs_rlcmac_tbf::tlli() const |
| { |
| return m_ms ? ms_tlli(m_ms) : GSM_RESERVED_TMSI; |
| } |
| |
| const char *gprs_rlcmac_tbf::imsi() const |
| { |
| return ms_imsi(m_ms); |
| } |
| |
| uint8_t gprs_rlcmac_tbf::ta() const |
| { |
| return ms_ta(m_ms); |
| } |
| |
| void gprs_rlcmac_tbf::set_ta(uint8_t ta) |
| { |
| ms_set_ta(m_ms, ta); |
| } |
| |
| uint8_t gprs_rlcmac_tbf::ms_class() const |
| { |
| return ms_ms_class(m_ms); |
| } |
| |
| enum CodingScheme gprs_rlcmac_tbf::current_cs() const |
| { |
| enum CodingScheme cs; |
| enum mcs_kind req_mcs_kind = is_egprs_enabled() ? EGPRS : GPRS; |
| |
| if (direction == GPRS_RLCMAC_UL_TBF) |
| cs = ms_current_cs_ul(m_ms); |
| else |
| cs = ms_current_cs_dl(m_ms, req_mcs_kind); |
| |
| return cs; |
| } |
| |
| gprs_llc_queue *gprs_rlcmac_tbf::llc_queue() |
| { |
| return ms_llc_queue(m_ms); |
| } |
| |
| const gprs_llc_queue *gprs_rlcmac_tbf::llc_queue() const |
| { |
| return ms_llc_queue(m_ms); |
| } |
| |
| void gprs_rlcmac_tbf::set_ms(GprsMs *ms) |
| { |
| if (m_ms == ms) |
| return; |
| |
| if (m_ms) { |
| ms_detach_tbf(m_ms, this); |
| } |
| |
| m_ms = ms; |
| |
| if (m_ms) |
| ms_attach_tbf(m_ms, this); |
| } |
| |
| void gprs_rlcmac_tbf::update_ms(uint32_t tlli, enum gprs_rlcmac_tbf_direction dir) |
| { |
| if (tlli == GSM_RESERVED_TMSI) |
| return; |
| |
| /* TODO: When the TLLI does not match the ms, check if there is another |
| * MS object that belongs to that TLLI and if yes make sure one of them |
| * gets deleted. This is the same problem that can arise with |
| * IMSI in gprs_rlcmac_dl_tbf::handle() so there should be a unified solution */ |
| if (!ms_check_tlli(ms(), tlli)) { |
| GprsMs *old_ms; |
| |
| old_ms = bts_ms_store(bts)->get_ms(tlli, 0, NULL); |
| if (old_ms) |
| ms_merge_and_clear_ms(ms(), old_ms); |
| } |
| |
| if (dir == GPRS_RLCMAC_UL_TBF) |
| ms_set_tlli(ms(), tlli); |
| else |
| ms_confirm_tlli(ms(), tlli); |
| } |
| |
| static void tbf_unlink_pdch(struct gprs_rlcmac_tbf *tbf) |
| { |
| int ts; |
| |
| for (ts = 0; ts < 8; ts++) { |
| if (!tbf->pdch[ts]) |
| continue; |
| |
| tbf->pdch[ts]->detach_tbf(tbf); |
| tbf->pdch[ts] = NULL; |
| } |
| } |
| |
| void tbf_free(struct gprs_rlcmac_tbf *tbf) |
| { |
| /* update counters */ |
| if (tbf->direction == GPRS_RLCMAC_UL_TBF) { |
| gprs_rlcmac_ul_tbf *ul_tbf = as_ul_tbf(tbf); |
| bts_do_rate_ctr_inc(tbf->bts, CTR_TBF_UL_FREED); |
| if (tbf->state_is(TBF_ST_FLOW)) |
| bts_do_rate_ctr_inc(tbf->bts, CTR_TBF_UL_ABORTED); |
| rate_ctr_group_free(ul_tbf->m_ul_egprs_ctrs); |
| rate_ctr_group_free(ul_tbf->m_ul_gprs_ctrs); |
| } else { |
| gprs_rlcmac_dl_tbf *dl_tbf = as_dl_tbf(tbf); |
| if (tbf->is_egprs_enabled()) { |
| rate_ctr_group_free(dl_tbf->m_dl_egprs_ctrs); |
| } else { |
| rate_ctr_group_free(dl_tbf->m_dl_gprs_ctrs); |
| } |
| bts_do_rate_ctr_inc(tbf->bts, CTR_TBF_DL_FREED); |
| if (tbf->state_is(TBF_ST_FLOW)) |
| bts_do_rate_ctr_inc(tbf->bts, CTR_TBF_DL_ABORTED); |
| } |
| |
| /* Give final measurement report */ |
| gprs_rlcmac_rssi_rep(tbf); |
| if (tbf->direction == GPRS_RLCMAC_DL_TBF) { |
| gprs_rlcmac_dl_tbf *dl_tbf = as_dl_tbf(tbf); |
| |
| dl_tbf->abort(); |
| dl_tbf->cleanup(); |
| } |
| |
| LOGPTBF(tbf, LOGL_INFO, "free\n"); |
| tbf->stop_timers("freeing TBF"); |
| /* TODO: Could/Should generate bssgp_tx_llc_discarded */ |
| tbf_unlink_pdch(tbf); |
| llist_del(tbf_trx_list(tbf)); |
| |
| if (tbf->ms()) |
| tbf->set_ms(NULL); |
| |
| rate_ctr_group_free(tbf->m_ctrs); |
| |
| LOGP(DTBF, LOGL_DEBUG, "********** %s-TBF ends here **********\n", |
| (tbf->direction != GPRS_RLCMAC_UL_TBF) ? "DL" : "UL"); |
| talloc_free(tbf); |
| } |
| |
| uint16_t egprs_window_size(const struct gprs_rlcmac_bts *bts, uint8_t slots) |
| { |
| uint8_t num_pdch = pcu_bitcount(slots); |
| |
| return OSMO_MIN((num_pdch != 1) ? (128 * num_pdch) : 192, |
| OSMO_MAX(64, (the_pcu->vty.ws_base + num_pdch * the_pcu->vty.ws_pdch) / 32 * 32)); |
| } |
| |
| int gprs_rlcmac_tbf::update() |
| { |
| int rc; |
| |
| if (direction != GPRS_RLCMAC_DL_TBF) |
| return -EINVAL; |
| |
| LOGP(DTBF, LOGL_DEBUG, "********** DL-TBF update **********\n"); |
| |
| tbf_unlink_pdch(this); |
| rc = the_pcu->alloc_algorithm(bts, this, false, -1); |
| /* if no resource */ |
| if (rc < 0) { |
| LOGPTBF(this, LOGL_ERROR, "No resource after update???\n"); |
| bts_do_rate_ctr_inc(bts, CTR_TBF_ALLOC_FAIL); |
| return -rc; |
| } |
| |
| if (is_egprs_enabled()) { |
| gprs_rlcmac_dl_tbf *dl_tbf = as_dl_tbf(this); |
| if (dl_tbf) |
| dl_tbf->set_window_size(); |
| } |
| |
| return 0; |
| } |
| |
| int tbf_assign_control_ts(struct gprs_rlcmac_tbf *tbf) |
| { |
| if (tbf->control_ts == 0xff) |
| LOGPTBF(tbf, LOGL_INFO, "Setting Control TS %d\n", |
| tbf->first_common_ts); |
| else if (tbf->control_ts != tbf->first_common_ts) |
| LOGPTBF(tbf, LOGL_INFO, "Changing Control TS %d -> %d\n", |
| tbf->control_ts, tbf->first_common_ts); |
| tbf->control_ts = tbf->first_common_ts; |
| |
| return 0; |
| } |
| |
| void gprs_rlcmac_tbf::n_reset(enum tbf_counters n) |
| { |
| if (n >= N_MAX) { |
| LOGPTBF(this, LOGL_ERROR, "attempting to reset unknown counter %s\n", |
| get_value_string(tbf_counters_names, n)); |
| return; |
| } |
| |
| Narr[n] = 0; |
| } |
| |
| /* Increment counter and check for MAX value (return true if we hit it) */ |
| bool gprs_rlcmac_tbf::n_inc(enum tbf_counters n) |
| { |
| uint8_t chk; |
| |
| if (n >= N_MAX) { |
| LOGPTBF(this, LOGL_ERROR, "attempting to increment unknown counter %s\n", |
| get_value_string(tbf_counters_names, n)); |
| return true; |
| } |
| |
| Narr[n]++; |
| |
| switch(n) { |
| case N3101: |
| chk = bts->n3101; |
| break; |
| case N3103: |
| chk = bts->n3103; |
| break; |
| case N3105: |
| chk = bts->n3105; |
| break; |
| default: |
| LOGPTBF(this, LOGL_ERROR, "unhandled counter %s\n", |
| get_value_string(tbf_counters_names, n)); |
| return true; |
| } |
| |
| if (Narr[n] == chk) { |
| LOGPTBF(this, LOGL_NOTICE, "%s exceeded MAX (%u)\n", |
| get_value_string(tbf_counters_names, n), chk); |
| return true; |
| } else { |
| LOGPTBF(this, LOGL_DEBUG, "%s %" PRIu8 " => %" PRIu8 " (< MAX %" PRIu8 ")\n", |
| get_value_string(tbf_counters_names, n), Narr[n] - 1, Narr[n], chk); |
| return false; |
| } |
| } |
| |
| void gprs_rlcmac_tbf::t_stop(enum tbf_timers t, const char *reason) |
| { |
| if (t >= T_MAX) { |
| LOGPTBF(this, LOGL_ERROR, "attempting to stop unknown timer %s [%s]\n", |
| get_value_string(tbf_timers_names, t), reason); |
| return; |
| } |
| |
| if (osmo_timer_pending(&Tarr[t])) { |
| LOGPTBF(this, LOGL_DEBUG, "stopping timer %s [%s]\n", |
| get_value_string(tbf_timers_names, t), reason); |
| osmo_timer_del(&Tarr[t]); |
| } |
| } |
| |
| /* check if any of T31xx timer(s) are pending */ |
| bool gprs_rlcmac_tbf::timers_pending(enum tbf_timers t) |
| { |
| uint8_t i; |
| |
| if (t != T_MAX) |
| return osmo_timer_pending(&Tarr[t]); |
| |
| /* we don't start with T0 because it's internal timer which requires special handling */ |
| for (i = T3141; i < T_MAX; i++) |
| if (osmo_timer_pending(&Tarr[i])) |
| return true; |
| |
| return false; |
| } |
| |
| void gprs_rlcmac_tbf::stop_timers(const char *reason) |
| { |
| uint8_t i; |
| /* we start with T0 because timer reset does not require any special handling */ |
| for (i = T0; i < T_MAX; i++) |
| t_stop((enum tbf_timers)i, reason); |
| } |
| |
| static inline void tbf_timeout_free(struct gprs_rlcmac_tbf *tbf, enum tbf_timers t, bool run_diag) |
| { |
| LOGPTBF(tbf, LOGL_NOTICE, "%s timeout expired, freeing TBF\n", |
| get_value_string(tbf_timers_names, t)); |
| |
| if (run_diag) { |
| LOGPTBF(tbf, LOGL_NOTICE, "%s timeout expired, freeing TBF: %s\n", |
| get_value_string(tbf_timers_names, t), tbf->rlcmac_diag().c_str()); |
| } else { |
| LOGPTBF(tbf, LOGL_NOTICE, "%s timeout expired, freeing TBF\n", |
| get_value_string(tbf_timers_names, t)); |
| } |
| |
| tbf_free(tbf); |
| } |
| |
| #define T_CBACK(t, diag) static void cb_##t(void *_tbf) { tbf_timeout_free((struct gprs_rlcmac_tbf *)_tbf, t, diag); } |
| |
| /* 3GPP TS 44.018 sec 3.5.2.1.5: On the network side, if timer T3141 elapses |
| * before a successful contention resolution procedure is completed, the newly |
| * allocated temporary block flow is released as specified in 3GPP TS 44.060 and |
| * the packet access is forgotten.*/ |
| T_CBACK(T3141, true) |
| T_CBACK(T3169, true) |
| T_CBACK(T3191, true) |
| T_CBACK(T3193, false) |
| T_CBACK(T3195, true) |
| |
| void gprs_rlcmac_tbf::t_start(enum tbf_timers t, int T, const char *reason, bool force, |
| const char *file, unsigned line) |
| { |
| int current_fn = bts_current_frame_number(bts); |
| int sec; |
| int microsec; |
| struct osmo_tdef *tdef; |
| |
| if (!(tdef = osmo_tdef_get_entry(bts->T_defs_bts, T))) |
| tdef = osmo_tdef_get_entry(bts->pcu->T_defs, T); |
| |
| if (t >= T_MAX || !tdef) { |
| LOGPSRC(DTBF, LOGL_ERROR, file, line, "%s attempting to start unknown timer %s [%s], cur_fn=%d\n", |
| tbf_name(this), get_value_string(tbf_timers_names, t), reason, current_fn); |
| return; |
| } |
| |
| if (!force && osmo_timer_pending(&Tarr[t])) |
| return; |
| |
| switch (tdef->unit) { |
| case OSMO_TDEF_MS: |
| sec = 0; |
| microsec = tdef->val * 1000; |
| break; |
| case OSMO_TDEF_S: |
| sec = tdef->val; |
| microsec = 0; |
| break; |
| default: |
| /* so far only timers using MS and S */ |
| OSMO_ASSERT(false); |
| } |
| |
| LOGPSRC(DTBF, LOGL_DEBUG, file, line, "%s %sstarting timer %s [%s] with %u sec. %u microsec, cur_fn=%d\n", |
| tbf_name(this), osmo_timer_pending(&Tarr[t]) ? "re" : "", |
| get_value_string(tbf_timers_names, t), reason, sec, microsec, current_fn); |
| |
| Tarr[t].data = this; |
| |
| switch(t) { |
| case T0: |
| Tarr[t].cb = tbf_timer_cb; |
| break; |
| case T3141: |
| Tarr[t].cb = cb_T3141; |
| break; |
| case T3169: |
| Tarr[t].cb = cb_T3169; |
| break; |
| case T3191: |
| Tarr[t].cb = cb_T3191; |
| break; |
| case T3193: |
| Tarr[t].cb = cb_T3193; |
| break; |
| case T3195: |
| Tarr[t].cb = cb_T3195; |
| break; |
| default: |
| LOGPSRC(DTBF, LOGL_ERROR, file, line, "%s attempting to set callback for unknown timer %s [%s], cur_fn=%d\n", |
| tbf_name(this), get_value_string(tbf_timers_names, t), reason, current_fn); |
| } |
| |
| osmo_timer_schedule(&Tarr[t], sec, microsec); |
| } |
| |
| int gprs_rlcmac_tbf::check_polling(uint32_t fn, uint8_t ts, |
| uint32_t *poll_fn_, unsigned int *rrbp_) const |
| { |
| int rc; |
| if (!is_control_ts(ts)) { |
| LOGPTBF(this, LOGL_DEBUG, "Polling cannot be " |
| "scheduled in this TS %d (first control TS %d)\n", |
| ts, control_ts); |
| return -EINVAL; |
| } |
| |
| if ((rc = pdch_ulc_get_next_free_rrbp_fn(trx->pdch[ts].ulc, fn, poll_fn_, rrbp_)) < 0) { |
| LOGPTBF(this, LOGL_DEBUG, |
| "(bts=%u,trx=%u,ts=%u) FN=%u No suitable free RRBP offset found!\n", |
| trx->bts->nr, trx->trx_no, ts, fn); |
| return rc; |
| } |
| |
| return 0; |
| } |
| |
| void gprs_rlcmac_tbf::set_polling(uint32_t new_poll_fn, uint8_t ts, enum pdch_ulc_tbf_poll_reason reason) |
| { |
| const char *chan = "UNKNOWN"; |
| |
| if (state_fsm.state_flags & (1 << (GPRS_RLCMAC_FLAG_CCCH))) |
| chan = "CCCH"; |
| |
| if (state_fsm.state_flags & (1 << (GPRS_RLCMAC_FLAG_PACCH))) |
| chan = "PACCH"; |
| |
| if ((state_fsm.state_flags & (1 << (GPRS_RLCMAC_FLAG_PACCH))) && |
| (state_fsm.state_flags & (1 << (GPRS_RLCMAC_FLAG_CCCH)))) |
| LOGPTBFDL(this, LOGL_ERROR, |
| "Attempt to schedule polling on %s (FN=%d, TS=%d) with both CCCH and PACCH flags set - FIXME!\n", |
| chan, new_poll_fn, ts); |
| |
| /* schedule polling */ |
| if (pdch_ulc_reserve_tbf_poll(trx->pdch[ts].ulc, new_poll_fn, this, reason) < 0) { |
| LOGPTBFDL(this, LOGL_ERROR, "Failed scheduling poll on %s (FN=%d, TS=%d)\n", |
| chan, new_poll_fn, ts); |
| return; |
| } |
| |
| switch (reason) { |
| case PDCH_ULC_POLL_UL_ASS: |
| ul_ass_state = GPRS_RLCMAC_UL_ASS_WAIT_ACK; |
| |
| LOGPTBFDL(this, LOGL_INFO, "Scheduled UL Assignment polling on %s (FN=%d, TS=%d)\n", |
| chan, new_poll_fn, ts); |
| break; |
| case PDCH_ULC_POLL_DL_ASS: |
| dl_ass_state = GPRS_RLCMAC_DL_ASS_WAIT_ACK; |
| |
| LOGPTBFDL(this, LOGL_INFO, "Scheduled DL Assignment polling on %s (FN=%d, TS=%d)\n", |
| chan, new_poll_fn, ts); |
| break; |
| case PDCH_ULC_POLL_UL_ACK: |
| ul_ack_state = GPRS_RLCMAC_UL_ACK_WAIT_ACK; |
| |
| LOGPTBFUL(this, LOGL_DEBUG, "Scheduled UL Acknowledgement polling on %s (FN=%d, TS=%d)\n", |
| chan, new_poll_fn, ts); |
| break; |
| case PDCH_ULC_POLL_DL_ACK: |
| LOGPTBFDL(this, LOGL_DEBUG, "Scheduled DL Acknowledgement polling on %s (FN=%d, TS=%d)\n", |
| chan, new_poll_fn, ts); |
| break; |
| case PDCH_ULC_POLL_CELL_CHG_CONTINUE: |
| LOGPTBFDL(this, LOGL_DEBUG, "Scheduled 'Packet Cell Change Continue' polling on %s (FN=%d, TS=%d)\n", |
| chan, new_poll_fn, ts); |
| break; |
| } |
| } |
| |
| void gprs_rlcmac_tbf::poll_timeout(struct gprs_rlcmac_pdch *pdch, uint32_t poll_fn, enum pdch_ulc_tbf_poll_reason reason) |
| { |
| uint16_t pgroup; |
| gprs_rlcmac_ul_tbf *ul_tbf = as_ul_tbf(this); |
| |
| LOGPTBF(this, LOGL_NOTICE, "poll timeout for FN=%d, TS=%d (curr FN %d)\n", |
| poll_fn, pdch->ts_no, bts_current_frame_number(bts)); |
| |
| if (ul_tbf && ul_tbf->handle_ctrl_ack(reason)) { |
| if (!ul_tbf->ctrl_ack_to_toggle()) { |
| LOGPTBF(this, LOGL_NOTICE, |
| "Timeout for polling PACKET CONTROL ACK for PACKET UPLINK ACK: %s\n", |
| rlcmac_diag().c_str()); |
| } |
| bts_do_rate_ctr_inc(bts, CTR_RLC_ACK_TIMEDOUT); |
| bts_do_rate_ctr_inc(bts, CTR_PUAN_POLL_TIMEDOUT); |
| if (state_is(TBF_ST_FINISHED)) { |
| if (ul_tbf->n_inc(N3103)) { |
| bts_do_rate_ctr_inc(bts, CTR_PUAN_POLL_FAILED); |
| TBF_SET_STATE(ul_tbf, TBF_ST_RELEASING); |
| T_START(ul_tbf, T3169, 3169, "MAX N3103 reached", false); |
| return; |
| } |
| /* reschedule UL ack */ |
| ul_tbf->ul_ack_state = GPRS_RLCMAC_UL_ACK_SEND_ACK; |
| } |
| |
| } else if (ul_ass_state == GPRS_RLCMAC_UL_ASS_WAIT_ACK) { |
| if (!(state_fsm.state_flags & (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS))) { |
| LOGPTBF(this, LOGL_NOTICE, |
| "Timeout for polling PACKET CONTROL ACK for PACKET UPLINK ASSIGNMENT: %s\n", |
| rlcmac_diag().c_str()); |
| state_fsm.state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_UL_ASS); |
| } |
| ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE; |
| bts_do_rate_ctr_inc(bts, CTR_RLC_ASS_TIMEDOUT); |
| bts_do_rate_ctr_inc(bts, CTR_PUA_POLL_TIMEDOUT); |
| if (n_inc(N3105)) { |
| TBF_SET_STATE(this, TBF_ST_RELEASING); |
| T_START(this, T3195, 3195, "MAX N3105 reached", true); |
| bts_do_rate_ctr_inc(bts, CTR_RLC_ASS_FAILED); |
| bts_do_rate_ctr_inc(bts, CTR_PUA_POLL_FAILED); |
| return; |
| } |
| /* reschedule UL assignment */ |
| ul_ass_state = GPRS_RLCMAC_UL_ASS_SEND_ASS; |
| } else if (dl_ass_state == GPRS_RLCMAC_DL_ASS_WAIT_ACK) { |
| if (!(state_fsm.state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS))) { |
| LOGPTBF(this, LOGL_NOTICE, |
| "Timeout for polling PACKET CONTROL ACK for PACKET DOWNLINK ASSIGNMENT: %s\n", |
| rlcmac_diag().c_str()); |
| state_fsm.state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_DL_ASS); |
| } |
| dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
| bts_do_rate_ctr_inc(bts, CTR_RLC_ASS_TIMEDOUT); |
| bts_do_rate_ctr_inc(bts, CTR_PDA_POLL_TIMEDOUT); |
| if (n_inc(N3105)) { |
| TBF_SET_STATE(this, TBF_ST_RELEASING); |
| T_START(this, T3195, 3195, "MAX N3105 reached", true); |
| bts_do_rate_ctr_inc(bts, CTR_RLC_ASS_FAILED); |
| bts_do_rate_ctr_inc(bts, CTR_PDA_POLL_FAILED); |
| return; |
| } |
| /* reschedule DL assignment */ |
| dl_ass_state = GPRS_RLCMAC_DL_ASS_SEND_ASS; |
| } else if (m_ms->nacc && m_ms->nacc->fi->state == NACC_ST_WAIT_CELL_CHG_CONTINUE_ACK && |
| m_ms->nacc->continue_poll_fn == poll_fn && m_ms->nacc->continue_poll_ts == pdch->ts_no) { |
| /* Timeout waiting for CTRL ACK acking Pkt Cell Change Continue */ |
| osmo_fsm_inst_dispatch(m_ms->nacc->fi, NACC_EV_TIMEOUT_CELL_CHG_CONTINUE, NULL); |
| return; |
| } else if (direction == GPRS_RLCMAC_DL_TBF) { |
| gprs_rlcmac_dl_tbf *dl_tbf = as_dl_tbf(this); |
| |
| if (!(dl_tbf->state_fsm.state_flags & (1 << GPRS_RLCMAC_FLAG_TO_DL_ACK))) { |
| LOGPTBF(this, LOGL_NOTICE, |
| "Timeout for polling PACKET DOWNLINK ACK: %s\n", |
| dl_tbf->rlcmac_diag().c_str()); |
| dl_tbf->state_fsm.state_flags |= (1 << GPRS_RLCMAC_FLAG_TO_DL_ACK); |
| } |
| |
| if (dl_tbf->state_is(TBF_ST_RELEASING)) |
| bts_do_rate_ctr_inc(bts, CTR_RLC_REL_TIMEDOUT); |
| else { |
| bts_do_rate_ctr_inc(bts, CTR_RLC_ACK_TIMEDOUT); |
| bts_do_rate_ctr_inc(bts, CTR_PDAN_POLL_TIMEDOUT); |
| } |
| |
| if (dl_tbf->n_inc(N3105)) { |
| TBF_SET_STATE(dl_tbf, TBF_ST_RELEASING); |
| T_START(dl_tbf, T3195, 3195, "MAX N3105 reached", true); |
| bts_do_rate_ctr_inc(bts, CTR_PDAN_POLL_FAILED); |
| bts_do_rate_ctr_inc(bts, CTR_RLC_ACK_FAILED); |
| return; |
| } |
| /* resend IMM.ASS on CCCH on timeout */ |
| if ((dl_tbf->state_fsm.state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH)) |
| && !(dl_tbf->state_fsm.state_flags & (1 << GPRS_RLCMAC_FLAG_DL_ACK))) { |
| LOGPTBF(dl_tbf, LOGL_DEBUG, "Re-send dowlink assignment on PCH (IMSI=%s)\n", |
| imsi()); |
| /* send immediate assignment */ |
| if ((pgroup = imsi2paging_group(imsi())) > 999) |
| LOGPTBF(dl_tbf, LOGL_ERROR, "IMSI to paging group failed! (%s)\n", imsi()); |
| bts_snd_dl_ass(dl_tbf->bts, dl_tbf, pgroup); |
| dl_tbf->m_wait_confirm = 1; |
| } |
| } else |
| LOGPTBF(this, LOGL_ERROR, "Poll Timeout, but no event!\n"); |
| } |
| |
| int gprs_rlcmac_tbf::setup(int8_t use_trx, bool single_slot) |
| { |
| int rc; |
| |
| if (ms_mode(m_ms) != GPRS) |
| enable_egprs(); |
| |
| m_created_ts = time(NULL); |
| /* select algorithm */ |
| rc = the_pcu->alloc_algorithm(bts, this, single_slot, use_trx); |
| /* if no resource */ |
| if (rc < 0) { |
| LOGPTBF(this, LOGL_NOTICE, |
| "Timeslot Allocation failed: trx = %d, single_slot = %d\n", |
| use_trx, single_slot); |
| bts_do_rate_ctr_inc(bts, CTR_TBF_ALLOC_FAIL); |
| return -1; |
| } |
| /* assign control ts */ |
| rc = tbf_assign_control_ts(this); |
| /* if no resource */ |
| if (rc < 0) { |
| LOGPTBF(this, LOGL_ERROR, "Failed to assign control TS\n"); |
| return -1; |
| } |
| |
| /* set timestamp */ |
| osmo_clock_gettime(CLOCK_MONOTONIC, &meas.rssi_tv); |
| |
| LOGPTBF(this, LOGL_INFO, |
| "Allocated: trx = %d, ul_slots = %02x, dl_slots = %02x\n", |
| this->trx->trx_no, ul_slots(), dl_slots()); |
| |
| m_ctrs = rate_ctr_group_alloc(this, &tbf_ctrg_desc, next_tbf_ctr_group_id++); |
| if (!m_ctrs) { |
| LOGPTBF(this, LOGL_ERROR, "Couldn't allocate TBF counters\n"); |
| return -1; |
| } |
| |
| tbf_update_state_fsm_name(this); |
| |
| ms_attach_tbf(m_ms, this); |
| |
| return 0; |
| } |
| |
| static void tbf_timer_cb(void *_tbf) |
| { |
| struct gprs_rlcmac_tbf *tbf = (struct gprs_rlcmac_tbf *)_tbf; |
| tbf->handle_timeout(); |
| } |
| |
| void gprs_rlcmac_tbf::handle_timeout() |
| { |
| int current_fn = bts_current_frame_number(bts); |
| |
| LOGPTBF(this, LOGL_DEBUG, "timer 0 expired. cur_fn=%d\n", current_fn); |
| |
| /* PACCH assignment timeout (see timers X2000, X2001) */ |
| if ((state_fsm.state_flags & (1 << GPRS_RLCMAC_FLAG_PACCH))) { |
| if (state_is(TBF_ST_ASSIGN)) { |
| LOGPTBF(this, LOGL_NOTICE, "releasing due to PACCH assignment timeout.\n"); |
| tbf_free(this); |
| return; |
| } else |
| LOGPTBF(this, LOGL_ERROR, "Error: TBF is not in assign state\n"); |
| } |
| |
| /* Finish waiting after IMM.ASS confirm timer for CCCH assignment (see timer X2002) */ |
| if ((state_fsm.state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) { |
| gprs_rlcmac_dl_tbf *dl_tbf = as_dl_tbf(this); |
| dl_tbf->m_wait_confirm = 0; |
| if (dl_tbf->state_is(TBF_ST_ASSIGN)) { |
| tbf_assign_control_ts(dl_tbf); |
| |
| if (!dl_tbf->upgrade_to_multislot) { |
| /* change state to FLOW, so scheduler |
| * will start transmission */ |
| osmo_fsm_inst_dispatch(dl_tbf->state_fsm.fi, TBF_EV_ASSIGN_READY_CCCH, NULL); |
| return; |
| } |
| |
| /* This tbf can be upgraded to use multiple DL |
| * timeslots and now that there is already one |
| * slot assigned send another DL assignment via |
| * PDCH. */ |
| |
| /* keep to flags */ |
| dl_tbf->state_fsm.state_flags &= GPRS_RLCMAC_FLAG_TO_MASK; |
| |
| dl_tbf->update(); |
| |
| dl_tbf->trigger_ass(dl_tbf); |
| } else |
| LOGPTBF(dl_tbf, LOGL_NOTICE, "Continue flow after IMM.ASS confirm\n"); |
| } |
| } |
| |
| std::string gprs_rlcmac_tbf::rlcmac_diag() |
| { |
| std::ostringstream os; |
| os << "|"; |
| if ((state_fsm.state_flags & (1 << GPRS_RLCMAC_FLAG_CCCH))) |
| os << "Assignment was on CCCH|"; |
| if ((state_fsm.state_flags & (1 << GPRS_RLCMAC_FLAG_PACCH))) |
| os << "Assignment was on PACCH|"; |
| if ((state_fsm.state_flags & (1 << GPRS_RLCMAC_FLAG_UL_DATA))) |
| os << "Uplink data was received|"; |
| else if (direction == GPRS_RLCMAC_UL_TBF) |
| os << "No uplink data received yet|"; |
| if ((state_fsm.state_flags & (1 << GPRS_RLCMAC_FLAG_DL_ACK))) |
| os << "Downlink ACK was received|"; |
| else if (direction == GPRS_RLCMAC_DL_TBF) |
| os << "No downlink ACK received yet|"; |
| |
| return os.str(); |
| } |
| |
| struct msgb *gprs_rlcmac_tbf::create_dl_ass(uint32_t fn, uint8_t ts) |
| { |
| struct msgb *msg; |
| struct gprs_rlcmac_dl_tbf *new_dl_tbf = NULL; |
| RlcMacDownlink_t *mac_control_block = NULL; |
| const int poll_ass_dl = 1; |
| unsigned int rrbp = 0; |
| uint32_t new_poll_fn = 0; |
| int rc; |
| bool old_tfi_is_valid = is_tfi_assigned(); |
| |
| /* We only use this function in control TS (PACCH) so that MS can always answer the poll */ |
| OSMO_ASSERT(is_control_ts(ts)); |
| |
| if (ul_ass_state == GPRS_RLCMAC_UL_ASS_WAIT_ACK) |
| { |
| LOGPTBF(this, LOGL_DEBUG, |
| "Polling is already scheduled, so we must wait for the uplink assignment...\n"); |
| return NULL; |
| } |
| rc = check_polling(fn, ts, &new_poll_fn, &rrbp); |
| if (rc < 0) |
| return NULL; |
| |
| /* on uplink TBF we get the downlink TBF to be assigned. */ |
| if (direction == GPRS_RLCMAC_UL_TBF) { |
| gprs_rlcmac_ul_tbf *ul_tbf = as_ul_tbf(this); |
| |
| /* be sure to check first, if contention resolution is done, |
| * otherwise we cannot send the assignment yet (3GPP TS 44.060 sec 7.1.3.1) */ |
| if (!ul_tbf->m_contention_resolution_done) { |
| LOGPTBF(this, LOGL_DEBUG, |
| "Cannot assign DL TBF now, because contention resolution is not finished.\n"); |
| return NULL; |
| } |
| } |
| |
| if (ms()) |
| new_dl_tbf = ms_dl_tbf(ms()); |
| |
| if (!new_dl_tbf) { |
| LOGPTBFDL(this, LOGL_ERROR, |
| "We have a schedule for downlink assignment, but there is no downlink TBF\n"); |
| dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
| return NULL; |
| } |
| |
| if (new_dl_tbf == as_dl_tbf(this)) |
| LOGPTBF(this, LOGL_DEBUG, "New and old TBF are the same.\n"); |
| |
| if (old_tfi_is_valid && !new_dl_tbf->is_tlli_valid()) { |
| LOGPTBF(this, LOGL_ERROR, |
| "The old TFI is not assigned and there is no TLLI. New TBF %s\n", |
| new_dl_tbf->name()); |
| dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; |
| return NULL; |
| } |
| |
| new_dl_tbf->was_releasing = was_releasing; |
| msg = msgb_alloc(GSM_MACBLOCK_LEN, "rlcmac_dl_ass"); |
| if (!msg) |
| return NULL; |
| |
| /* Initialize a bit vector that uses allocated msgb as the data buffer. |
| * Old G++ does not support non-trivial designated initializers. Sigh. */ |
| struct bitvec bv = { }; |
| bv.data = msgb_put(msg, GSM_MACBLOCK_LEN); |
| bv.data_len = GSM_MACBLOCK_LEN; |
| bitvec_unhex(&bv, DUMMY_VEC); |
| |
| LOGPTBF(new_dl_tbf, LOGL_INFO, "start Packet Downlink Assignment (PACCH)\n"); |
| mac_control_block = (RlcMacDownlink_t *)talloc_zero(tall_pcu_ctx, RlcMacDownlink_t); |
| Encoding::write_packet_downlink_assignment(mac_control_block, |
| old_tfi_is_valid, m_tfi, (direction == GPRS_RLCMAC_DL_TBF), |
| new_dl_tbf, poll_ass_dl, rrbp, |
| bts_get_ms_pwr_alpha(new_dl_tbf->bts), the_pcu->vty.gamma, -1, 0, |
| is_egprs_enabled()); |
| LOGP(DTBF, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++\n"); |
| rc = encode_gsm_rlcmac_downlink(&bv, mac_control_block); |
| if (rc < 0) { |
| LOGP(DTBF, LOGL_ERROR, "Encoding of Packet Downlink Ass failed (%d)\n", rc); |
| goto free_ret; |
| } |
| LOGP(DTBF, LOGL_DEBUG, "------------------------- TX : Packet Downlink Assignment -------------------------\n"); |
| bts_do_rate_ctr_inc(bts, CTR_PKT_DL_ASSIGNMENT); |
| |
| set_polling(new_poll_fn, ts, PDCH_ULC_POLL_DL_ASS); |
| |
| talloc_free(mac_control_block); |
| return msg; |
| |
| free_ret: |
| talloc_free(mac_control_block); |
| msgb_free(msg); |
| return NULL; |
| } |
| |
| struct msgb *gprs_rlcmac_tbf::create_packet_access_reject() |
| { |
| struct msgb *msg; |
| |
| msg = msgb_alloc(GSM_MACBLOCK_LEN, "rlcmac_ul_ass_rej"); |
| |
| bitvec *packet_access_rej = bitvec_alloc(GSM_MACBLOCK_LEN, tall_pcu_ctx); |
| |
| bitvec_unhex(packet_access_rej, DUMMY_VEC); |
| |
| Encoding::write_packet_access_reject(packet_access_rej, tlli(), |
| osmo_tdef_get(bts->T_defs_bts, 3172, OSMO_TDEF_MS, -1)); |
| |
| bts_do_rate_ctr_inc(bts, CTR_PKT_ACCESS_REJ); |
| |
| bitvec_pack(packet_access_rej, msgb_put(msg, GSM_MACBLOCK_LEN)); |
| |
| bitvec_free(packet_access_rej); |
| ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE; |
| |
| /* Start release only if it is UL TBF */ |
| if (direction == GPRS_RLCMAC_UL_TBF) { |
| /* tbf_free() called in gprs_rlcmac_tbf::handle_timeout */ |
| T_START(this, T0, -2000, "reject (PACCH)", true); |
| } |
| |
| return msg; |
| |
| } |
| |
| struct msgb *gprs_rlcmac_tbf::create_ul_ass(uint32_t fn, uint8_t ts) |
| { |
| struct msgb *msg = NULL; |
| struct gprs_rlcmac_ul_tbf *new_tbf = NULL; |
| RlcMacDownlink_t *mac_control_block = NULL; |
| int rc; |
| unsigned int rrbp; |
| uint32_t new_poll_fn; |
| |
| if (ul_ass_state == GPRS_RLCMAC_UL_ASS_WAIT_ACK) { |
| LOGPTBFUL(this, LOGL_DEBUG, |
| "Polling is already scheduled, so we must wait for the uplink assignment...\n"); |
| return NULL; |
| } |
| |
| rc = check_polling(fn, ts, &new_poll_fn, &rrbp); |
| if (rc < 0) |
| return NULL; |
| |
| if (ms()) |
| new_tbf = ms_ul_tbf(ms()); |
| if (!new_tbf) { |
| LOGPTBFUL(this, LOGL_ERROR, |
| "We have a schedule for uplink assignment, but there is no uplink TBF\n"); |
| ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE; |
| return NULL; |
| } |
| |
| msg = msgb_alloc(GSM_MACBLOCK_LEN, "rlcmac_ul_ass"); |
| if (!msg) |
| return NULL; |
| |
| /* Initialize a bit vector that uses allocated msgb as the data buffer. |
| * Old G++ does not support non-trivial designated initializers. Sigh. */ |
| struct bitvec bv = { }; |
| bv.data = msgb_put(msg, GSM_MACBLOCK_LEN); |
| bv.data_len = GSM_MACBLOCK_LEN; |
| bitvec_unhex(&bv, DUMMY_VEC); |
| |
| LOGPTBF(new_tbf, LOGL_INFO, "start Packet Uplink Assignment (PACCH)\n"); |
| mac_control_block = (RlcMacDownlink_t *)talloc_zero(tall_pcu_ctx, RlcMacDownlink_t); |
| Encoding::write_packet_uplink_assignment(mac_control_block, m_tfi, |
| (direction == GPRS_RLCMAC_DL_TBF), tlli(), |
| is_tlli_valid(), new_tbf, 1, rrbp, bts_get_ms_pwr_alpha(new_tbf->bts), |
| the_pcu->vty.gamma, -1, is_egprs_enabled()); |
| |
| LOGP(DTBF, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Uplink Assignment +++++++++++++++++++++++++\n"); |
| rc = encode_gsm_rlcmac_downlink(&bv, mac_control_block); |
| if (rc < 0) { |
| LOGP(DTBF, LOGL_ERROR, "Encoding of Packet Uplink Ass failed (%d)\n", rc); |
| goto free_ret; |
| } |
| LOGP(DTBF, LOGL_DEBUG, "------------------------- TX : Packet Uplink Assignment -------------------------\n"); |
| bts_do_rate_ctr_inc(bts, CTR_PKT_UL_ASSIGNMENT); |
| |
| set_polling(new_poll_fn, ts, PDCH_ULC_POLL_UL_ASS); |
| |
| talloc_free(mac_control_block); |
| return msg; |
| |
| free_ret: |
| talloc_free(mac_control_block); |
| msgb_free(msg); |
| return NULL; |
| } |
| |
| int gprs_rlcmac_tbf::establish_dl_tbf_on_pacch() |
| { |
| struct gprs_rlcmac_dl_tbf *new_tbf = NULL; |
| |
| bts_do_rate_ctr_inc(bts, CTR_TBF_REUSED); |
| |
| new_tbf = tbf_alloc_dl_tbf(bts, ms(), |
| this->trx->trx_no, false); |
| |
| if (!new_tbf) { |
| LOGP(DTBF, LOGL_NOTICE, "No PDCH resource\n"); |
| return -1; |
| } |
| |
| LOGPTBF(this, LOGL_DEBUG, "Trigger downlink assignment on PACCH\n"); |
| new_tbf->trigger_ass(this); |
| |
| return 0; |
| } |
| |
| const char *tbf_name(const gprs_rlcmac_tbf *tbf) |
| { |
| return tbf ? tbf->name() : "(no TBF)"; |
| } |
| |
| const char *gprs_rlcmac_tbf::name() const |
| { |
| snprintf(m_name_buf, sizeof(m_name_buf) - 1, |
| "TBF(TFI=%d TLLI=0x%08x DIR=%s STATE=%s%s)", |
| m_tfi, tlli(), |
| direction == GPRS_RLCMAC_UL_TBF ? "UL" : "DL", |
| state_name(), |
| is_egprs_enabled() ? " EGPRS" : "" |
| ); |
| m_name_buf[sizeof(m_name_buf) - 1] = '\0'; |
| return m_name_buf; |
| } |
| |
| void tbf_update_state_fsm_name(struct gprs_rlcmac_tbf *tbf) |
| { |
| osmo_fsm_inst_update_id_f_sanitize(tbf->state_fsm.fi, '_', "%s-TFI_%d", |
| tbf_direction(tbf) == GPRS_RLCMAC_UL_TBF ? "UL" : "DL", |
| tbf_tfi(tbf)); |
| } |
| |
| void gprs_rlcmac_tbf::rotate_in_list() |
| { |
| llist_del(tbf_trx_list((struct gprs_rlcmac_tbf *)this)); |
| if (direction == GPRS_RLCMAC_UL_TBF) |
| llist_add(tbf_trx_list((struct gprs_rlcmac_tbf *)this), &trx->ul_tbfs); |
| else |
| llist_add(tbf_trx_list((struct gprs_rlcmac_tbf *)this), &trx->dl_tbfs); |
| } |
| |
| uint8_t gprs_rlcmac_tbf::tsc() const |
| { |
| return trx->pdch[first_ts].tsc; |
| } |
| |
| uint8_t gprs_rlcmac_tbf::dl_slots() const |
| { |
| uint8_t slots = 0; |
| size_t i; |
| |
| if (direction == GPRS_RLCMAC_UL_TBF) |
| return 0; |
| |
| for (i = 0; i < ARRAY_SIZE(pdch); i += 1) |
| if (pdch[i]) |
| slots |= 1 << i; |
| |
| return slots; |
| } |
| |
| uint8_t gprs_rlcmac_tbf::ul_slots() const |
| { |
| uint8_t slots = 0; |
| size_t i; |
| |
| if (direction == GPRS_RLCMAC_DL_TBF) { |
| if (control_ts < 8) |
| slots |= 1 << control_ts; |
| if (first_common_ts < 8) |
| slots |= 1 << first_common_ts; |
| |
| return slots; |
| } |
| |
| for (i = 0; i < ARRAY_SIZE(pdch); i += 1) |
| if (pdch[i]) |
| slots |= 1 << i; |
| |
| return slots; |
| } |
| |
| bool gprs_rlcmac_tbf::is_control_ts(uint8_t ts) const |
| { |
| return ts == control_ts; |
| } |
| |
| /* C API */ |
| enum tbf_fsm_states tbf_state(const struct gprs_rlcmac_tbf *tbf) |
| { |
| return (enum tbf_fsm_states)tbf->state_fsm.fi->state; |
| } |
| |
| enum gprs_rlcmac_tbf_direction tbf_direction(const struct gprs_rlcmac_tbf *tbf) |
| { |
| return tbf->direction; |
| } |
| |
| void tbf_set_ms(struct gprs_rlcmac_tbf *tbf, GprsMs *ms) |
| { |
| tbf->set_ms(ms); |
| } |
| |
| struct llist_head *tbf_ms_list(struct gprs_rlcmac_tbf *tbf) |
| { |
| return &tbf->m_ms_list.list; |
| } |
| |
| struct llist_head *tbf_trx_list(struct gprs_rlcmac_tbf *tbf) |
| { |
| return &tbf->m_trx_list.list; |
| } |
| |
| struct GprsMs *tbf_ms(const struct gprs_rlcmac_tbf *tbf) |
| { |
| return tbf->ms(); |
| } |
| |
| bool tbf_timers_pending(struct gprs_rlcmac_tbf *tbf, enum tbf_timers t) |
| { |
| return tbf->timers_pending(t); |
| } |
| |
| struct gprs_llc *tbf_llc(struct gprs_rlcmac_tbf *tbf) |
| { |
| return &tbf->m_llc; |
| } |
| |
| uint8_t tbf_first_common_ts(const struct gprs_rlcmac_tbf *tbf) |
| { |
| return tbf->first_common_ts; |
| } |
| |
| uint8_t tbf_dl_slots(const struct gprs_rlcmac_tbf *tbf) |
| { |
| return tbf->dl_slots(); |
| } |
| uint8_t tbf_ul_slots(const struct gprs_rlcmac_tbf *tbf) |
| { |
| return tbf->ul_slots(); |
| } |
| |
| bool tbf_is_tfi_assigned(const struct gprs_rlcmac_tbf *tbf) |
| { |
| return tbf->is_tfi_assigned(); |
| } |
| |
| uint8_t tbf_tfi(const struct gprs_rlcmac_tbf *tbf) |
| { |
| return tbf->tfi(); |
| } |
| |
| int tbf_check_polling(const struct gprs_rlcmac_tbf *tbf, uint32_t fn, uint8_t ts, uint32_t *poll_fn, unsigned int *rrbp) |
| { |
| return tbf->check_polling(fn, ts, poll_fn, rrbp); |
| } |
| |
| void tbf_set_polling(struct gprs_rlcmac_tbf *tbf, uint32_t new_poll_fn, uint8_t ts, enum pdch_ulc_tbf_poll_reason t) |
| { |
| return tbf->set_polling(new_poll_fn, ts, t); |
| } |
| |
| void tbf_poll_timeout(struct gprs_rlcmac_tbf *tbf, struct gprs_rlcmac_pdch *pdch, uint32_t poll_fn, enum pdch_ulc_tbf_poll_reason reason) |
| { |
| tbf->poll_timeout(pdch, poll_fn, reason); |
| } |