diff options
Diffstat (limited to 'src/gprs_rlcmac_data.cpp')
-rw-r--r-- | src/gprs_rlcmac_data.cpp | 103 |
1 files changed, 50 insertions, 53 deletions
diff --git a/src/gprs_rlcmac_data.cpp b/src/gprs_rlcmac_data.cpp index 7beca38f..0e8aca3e 100644 --- a/src/gprs_rlcmac_data.cpp +++ b/src/gprs_rlcmac_data.cpp @@ -64,7 +64,8 @@ struct rlc_li_field { int gprs_rlcmac_poll_timeout(struct gprs_rlcmac_tbf *tbf) { - LOGP(DRLCMAC, LOGL_NOTICE, "Poll timeout for TBF=%d\n", tbf->tfi); + LOGP(DRLCMAC, LOGL_NOTICE, "Poll timeout for %s TBF=%d\n", + (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tbf->tfi); tbf->poll_state = GPRS_RLCMAC_POLL_NONE; @@ -120,9 +121,10 @@ int gprs_rlcmac_poll_timeout(struct gprs_rlcmac_tbf *tbf) } /* Received Uplink RLC control block. */ -int gprs_rlcmac_rcv_control_block(bitvec *rlc_block, uint32_t fn) +int gprs_rlcmac_rcv_control_block(bitvec *rlc_block, uint8_t trx, uint8_t ts, + uint32_t fn) { - uint8_t tfi = 0; + int8_t tfi = 0; /* must be signed */ uint32_t tlli = 0; struct gprs_rlcmac_tbf *tbf; @@ -134,7 +136,7 @@ int gprs_rlcmac_rcv_control_block(bitvec *rlc_block, uint32_t fn) switch (ul_control_block->u.MESSAGE_TYPE) { case MT_PACKET_CONTROL_ACK: tlli = ul_control_block->u.Packet_Control_Acknowledgement.TLLI; - tbf = tbf_by_poll_fn(fn); + tbf = tbf_by_poll_fn(fn, trx, ts); if (!tbf) { LOGP(DRLCMAC, LOGL_NOTICE, "PACKET CONTROL ACK with " "unknown FN=%u TLL=0x%08x\n", fn, tlli); @@ -171,7 +173,7 @@ int gprs_rlcmac_rcv_control_block(bitvec *rlc_block, uint32_t fn) break; case MT_PACKET_DOWNLINK_ACK_NACK: tfi = ul_control_block->u.Packet_Downlink_Ack_Nack.DOWNLINK_TFI; - tbf = tbf_by_poll_fn(fn); + tbf = tbf_by_poll_fn(fn, trx, ts); if (!tbf) { LOGP(DRLCMAC, LOGL_NOTICE, "PACKET DOWNLINK ACK with " "unknown FN=%u TBF=%d\n", fn, tfi); @@ -191,32 +193,31 @@ int gprs_rlcmac_rcv_control_block(bitvec *rlc_block, uint32_t fn) ul_control_block->u.Packet_Downlink_Ack_Nack.Ack_Nack_Description.RECEIVED_BLOCK_BITMAP); /* check for channel request */ if (ul_control_block->u.Packet_Downlink_Ack_Nack.Exist_Channel_Request_Description) { - uint8_t trx, ts, usf; + uint8_t trx, ts; struct gprs_rlcmac_tbf *ul_tbf; struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF in ack " "message, so we provide one:\n"); uplink_request: - /* create new tbf */ - tfi = tfi_alloc(&trx, &ts); + /* create new TBF, use sme TRX as DL TBF */ + tfi = tfi_alloc(GPRS_RLCMAC_UL_TBF, &trx, &ts, tbf->trx, tbf->first_ts); if (tfi < 0) { LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH ressource\n"); /* FIXME: send reject */ break; } - usf = find_free_usf(trx, ts); - if (usf < 0) { - LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH ressource for USF\n"); + /* FIXME: set number of downlink slots according to + * multislot class */ + ul_tbf = tbf_alloc(GPRS_RLCMAC_UL_TBF, tfi, trx, ts, 1); + if (!ul_tbf) { + LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH ressource\n"); /* FIXME: send reject */ break; } - ul_tbf = tbf_alloc(tfi, trx, ts); ul_tbf->tlli = tbf->tlli; ul_tbf->tlli_valid = 1; /* no content resolution */ ul_tbf->ta = tbf->ta; /* use current TA */ - ul_tbf->direction = GPRS_RLCMAC_UL_TBF; - ul_tbf->dir.ul.usf = usf; tbf_new_state(ul_tbf, GPRS_RLCMAC_FLOW); tbf_timer_start(ul_tbf, 3169, bts->t3169, 0); /* schedule uplink assignment */ @@ -235,14 +236,14 @@ uplink_request: } else { if (ul_control_block->u.Packet_Resource_Request.ID.u.Global_TFI.UnionType) { tfi = ul_control_block->u.Packet_Resource_Request.ID.u.Global_TFI.u.DOWNLINK_TFI; - tbf = tbf_by_tfi(tfi, GPRS_RLCMAC_DL_TBF); + tbf = tbf_by_tfi(tfi, trx, ts, GPRS_RLCMAC_DL_TBF); if (!tbf) { LOGP(DRLCMAC, LOGL_NOTICE, "PACKET RESSOURCE REQ unknown downlink TBF=%d\n", tlli); break; } } else { tfi = ul_control_block->u.Packet_Resource_Request.ID.u.Global_TFI.u.UPLINK_TFI; - tbf = tbf_by_tfi(tfi, GPRS_RLCMAC_UL_TBF); + tbf = tbf_by_tfi(tfi, trx, ts, GPRS_RLCMAC_UL_TBF); if (!tbf) { LOGP(DRLCMAC, LOGL_NOTICE, "PACKET RESSOURCE REQ unknown uplink TBF=%d\n", tlli); break; @@ -250,7 +251,7 @@ uplink_request: } tlli = tbf->tlli; } - LOGP(DRLCMAC, LOGL_DEBUG, "RX: [PCU <- BTS] TFI: %u TLLI: 0x%08x Packet ressource request\n", tbf->tfi, tbf->tlli); + LOGP(DRLCMAC, LOGL_INFO, "RX: [PCU <- BTS] %s TFI: %u TLLI: 0x%08x Packet ressource request\n", (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tbf->tfi, tbf->tlli); #warning FIXME puts("FIXME: UL request during UL request"); exit(0); @@ -271,7 +272,8 @@ void tbf_timer_cb(void *_tbf) { struct gprs_rlcmac_tbf *tbf = (struct gprs_rlcmac_tbf *)_tbf; - LOGP(DRLCMAC, LOGL_DEBUG, "TBF=%d timer %u expired.\n", tbf->tfi, + LOGP(DRLCMAC, LOGL_DEBUG, "%s TBF=%d timer %u expired.\n", + (tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", tbf->tfi, tbf->T); tbf->num_T_exp++; @@ -495,8 +497,7 @@ static int gprs_rlcmac_assemble_llc(struct gprs_rlcmac_tbf *tbf, uint8_t *data, if (i != frames - 1) { /* send frame to SGSN */ LOGP(DRLCMACUL, LOGL_INFO, "Complete UL frame for " - "TBF=%d: %s\n", tbf->tfi, - osmo_hexdump(tbf->llc_frame, tbf->llc_index)); + "TBF=%d: len=%d\n", tbf->tfi, tbf->llc_index); gprs_rlcmac_tx_ul_ud(tbf); tbf->llc_index = 0; /* reset frame space */ /* also check if CV==0, because the frame may fill up the @@ -507,8 +508,7 @@ static int gprs_rlcmac_assemble_llc(struct gprs_rlcmac_tbf *tbf, uint8_t *data, /* send frame to SGSN */ LOGP(DRLCMACUL, LOGL_INFO, "Complete UL frame for " "TBF=%d that fits precisely in last block: " - "%s\n", tbf->tfi, - osmo_hexdump(tbf->llc_frame, tbf->llc_index)); + "len=%d\n", tbf->tfi, tbf->llc_index); gprs_rlcmac_tx_ul_ud(tbf); tbf->llc_index = 0; /* reset frame space */ } @@ -550,6 +550,7 @@ struct msgb *gprs_rlcmac_send_uplink_ack(struct gprs_rlcmac_tbf *tbf, if (final) { tbf->poll_state = GPRS_RLCMAC_POLL_SCHED; tbf->poll_fn = (fn + 13) % 2715648; + tbf->poll_ts = tbf->first_ts; /* waiting for final acknowledge */ tbf->ul_ack_state = GPRS_RLCMAC_UL_ACK_WAIT_ACK; } else @@ -562,7 +563,8 @@ struct msgb *gprs_rlcmac_send_uplink_ack(struct gprs_rlcmac_tbf *tbf, * * The blocks are defragmented and forwarded as LLC frames, if complete. */ -int gprs_rlcmac_rcv_data_block_acknowledged(uint8_t *data, uint8_t len) +int gprs_rlcmac_rcv_data_block_acknowledged(uint8_t trx, uint8_t ts, + uint8_t *data, uint8_t len) { struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; struct gprs_rlcmac_tbf *tbf; @@ -592,19 +594,13 @@ int gprs_rlcmac_rcv_data_block_acknowledged(uint8_t *data, uint8_t len) } /* find TBF inst from given TFI */ - tbf = tbf_by_tfi(rh->tfi, GPRS_RLCMAC_UL_TBF); + tbf = tbf_by_tfi(rh->tfi, trx, ts, GPRS_RLCMAC_UL_TBF); if (!tbf) { LOGP(DRLCMACUL, LOGL_NOTICE, "UL DATA unknown TBF=%d\n", rh->tfi); return 0; } - if (tbf->direction != GPRS_RLCMAC_UL_TBF) { - LOGP(DRLCMACUL, LOGL_NOTICE, "UL DATA TBF=%d not Uplink " - "tbf\n", rh->tfi); - return 0; - } - LOGP(DRLCMACUL, LOGL_DEBUG, "UL DATA TBF=%d received (V(Q)=%d .. " "V(R)=%d)\n", rh->tfi, tbf->dir.ul.v_q, tbf->dir.ul.v_r); @@ -755,12 +751,14 @@ struct msgb *gprs_rlcmac_send_packet_uplink_assignment( struct msgb *msg; struct gprs_rlcmac_tbf *new_tbf; +#if POLLING_ASSIGNMENT == 1 if (tbf->poll_state != GPRS_RLCMAC_POLL_NONE) { LOGP(DRLCMACUL, LOGL_DEBUG, "Polling is already " "sheduled for TBF=%d, so we must wait for uplink " "assignment...\n", tbf->tfi); return NULL; } +#endif /* on down TBF we get the uplink TBF to be assigned. */ if (tbf->direction == GPRS_RLCMAC_DL_TBF) @@ -788,9 +786,8 @@ struct msgb *gprs_rlcmac_send_packet_uplink_assignment( bitvec_unhex(ass_vec, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); write_packet_uplink_assignment(ass_vec, tbf->tfi, - (tbf->direction == GPRS_RLCMAC_DL_TBF), 0, 0, new_tbf->tfi, - new_tbf->dir.ul.usf, new_tbf->arfcn, new_tbf->ts, new_tbf->ta, - new_tbf->tsc, POLLING_ASSIGNMENT); + (tbf->direction == GPRS_RLCMAC_DL_TBF), 0, 0, new_tbf, + POLLING_ASSIGNMENT); bitvec_pack(ass_vec, msgb_put(msg, 23)); RlcMacDownlink_t * mac_control_block = (RlcMacDownlink_t *)malloc(sizeof(RlcMacDownlink_t)); LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Uplink Assignment +++++++++++++++++++++++++\n"); @@ -803,6 +800,7 @@ struct msgb *gprs_rlcmac_send_packet_uplink_assignment( FIXME process does not work, also the acknowledgement is not checked. tbf->poll_state = GPRS_RLCMAC_POLL_SCHED; tbf->poll_fn = (fn + 13) % 2715648; + tbf->poll_ts = tbf->first_ts; tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_WAIT_ACK; #else tbf->ul_ass_state = GPRS_RLCMAC_UL_ASS_NONE; @@ -816,31 +814,29 @@ int gprs_rlcmac_rcv_rach(uint8_t ra, uint32_t Fn, int16_t qta) struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; struct gprs_rlcmac_tbf *tbf; uint8_t trx, ts; - int tfi, usf; /* must be signed */ + int8_t tfi; /* must be signed */ LOGP(DRLCMAC, LOGL_DEBUG, "MS requests UL TBF on RACH, so we provide " "one:\n"); // Create new TBF - tfi = tfi_alloc(&trx, &ts); + tfi = tfi_alloc(GPRS_RLCMAC_UL_TBF, &trx, &ts, -1, -1); if (tfi < 0) { LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH ressource\n"); /* FIXME: send reject */ return -EBUSY; } - usf = find_free_usf(trx, ts); - if (usf < 0) { - LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH ressource for USF\n"); + /* select only one TS, since we don't know the multislot class yet */ + tbf = tbf_alloc(GPRS_RLCMAC_UL_TBF, tfi, trx, ts, 1); + if (!tbf) { + LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH ressource\n"); /* FIXME: send reject */ return -EBUSY; } - tbf = tbf_alloc(tfi, trx, ts); if (qta < 0) qta = 0; if (qta > 252) qta = 252; tbf->ta = qta >> 2; - tbf->direction = GPRS_RLCMAC_UL_TBF; - tbf->dir.ul.usf = usf; tbf_new_state(tbf, GPRS_RLCMAC_FLOW); tbf_timer_start(tbf, 3169, bts->t3169, 0); LOGP(DRLCMAC, LOGL_DEBUG, "TBF: [UPLINK] START TFI: %u\n", tbf->tfi); @@ -848,7 +844,7 @@ int gprs_rlcmac_rcv_rach(uint8_t ra, uint32_t Fn, int16_t qta) LOGP(DRLCMAC, LOGL_INFO, "TX: START TFI: %u Immediate Assignment Uplink (AGCH)\n", tbf->tfi); bitvec *immediate_assignment = bitvec_alloc(22) /* without plen */; bitvec_unhex(immediate_assignment, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); - int plen = write_immediate_assignment(immediate_assignment, 0, ra, Fn, tbf->ta, tbf->arfcn, tbf->ts, tbf->tsc, tbf->tfi, usf, 0, 0, 0); + int plen = write_immediate_assignment(immediate_assignment, 0, ra, Fn, tbf->ta, tbf->arfcn, tbf->first_ts, tbf->tsc, tbf->tfi, tbf->dir.ul.usf[tbf->first_ts], 0, 0, 0); pcu_l1if_tx_agch(immediate_assignment, plen); bitvec_free(immediate_assignment); @@ -1013,8 +1009,7 @@ do_resend: "header, and we are done\n", chunk, space); LOGP(DRLCMACDL, LOGL_INFO, "Complete DL frame for " "TBF=%d that fits precisely in last block: " - "%s\n", tbf->tfi, - osmo_hexdump(tbf->llc_frame, tbf->llc_length)); + "len=%d\n", tbf->tfi, tbf->llc_length); /* block is filled, so there is no extension */ *e_pointer |= 0x01; /* fill space */ @@ -1072,9 +1067,8 @@ do_resend: memcpy(data, tbf->llc_frame + tbf->llc_index, chunk); data += chunk; space -= chunk; - LOGP(DRLCMACDL, LOGL_INFO, "Complete DL frame for TBF=%d: %s\n", - tbf->tfi, - osmo_hexdump(tbf->llc_frame, tbf->llc_length)); + LOGP(DRLCMACDL, LOGL_INFO, "Complete DL frame for TBF=%d: " + "len=%d\n", tbf->tfi, tbf->llc_length); /* reset LLC frame */ tbf->llc_index = tbf->llc_length = 0; /* dequeue next LLC frame, if any */ @@ -1150,6 +1144,7 @@ tx_block: /* schedule polling */ tbf->poll_state = GPRS_RLCMAC_POLL_SCHED; tbf->poll_fn = (fn + 13) % 2715648; + tbf->poll_ts = tbf->first_ts; /* set polling in header */ rh->rrbp = 0; /* N+13 */ @@ -1286,12 +1281,14 @@ struct msgb *gprs_rlcmac_send_packet_downlink_assignment( struct msgb *msg; struct gprs_rlcmac_tbf *new_tbf; +#if POLLING_ASSIGNMENT == 1 if (tbf->poll_state != GPRS_RLCMAC_POLL_NONE) { - LOGP(DRLCMACDL, LOGL_DEBUG, "Polling is already " + LOGP(DRLCMAC, LOGL_DEBUG, "Polling is already " "sheduled for TBF=%d, so we must wait for downlink " "assignment...\n", tbf->tfi); return NULL; } +#endif /* on uplink TBF we get the downlink TBF to be assigned. */ if (tbf->direction == GPRS_RLCMAC_UL_TBF) @@ -1319,8 +1316,7 @@ struct msgb *gprs_rlcmac_send_packet_downlink_assignment( LOGP(DRLCMAC, LOGL_INFO, "TBF: START TFI: %u TLLI: 0x%08x Packet Downlink Assignment (PACCH)\n", new_tbf->tfi, new_tbf->tlli); RlcMacDownlink_t * mac_control_block = (RlcMacDownlink_t *)malloc(sizeof(RlcMacDownlink_t)); write_packet_downlink_assignment(mac_control_block, tbf->tfi, - (tbf->direction == GPRS_RLCMAC_DL_TBF), new_tbf->tfi, - new_tbf->arfcn, new_tbf->ts, new_tbf->ta, new_tbf->tsc, + (tbf->direction == GPRS_RLCMAC_DL_TBF), new_tbf, POLLING_ASSIGNMENT); LOGP(DRLCMAC, LOGL_DEBUG, "+++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++\n"); encode_gsm_rlcmac_downlink(ass_vec, mac_control_block); @@ -1333,6 +1329,7 @@ struct msgb *gprs_rlcmac_send_packet_downlink_assignment( #if POLLING_ASSIGNMENT == 1 tbf->poll_state = GPRS_RLCMAC_POLL_SCHED; tbf->poll_fn = (fn + 13) % 2715648; + tbf->poll_ts = tbf->first_ts; tbf->dl_ass_state = GPRS_RLCMAC_DL_ASS_WAIT_ACK; #else tbf->dl_ass_state = GPRS_RLCMAC_DL_ASS_NONE; @@ -1349,7 +1346,7 @@ static void gprs_rlcmac_downlink_assignment(gprs_rlcmac_tbf *tbf, uint8_t poll, bitvec_unhex(immediate_assignment, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); /* use request reference that has maximum distance to current time, * so the assignment will not conflict with possible RACH requests. */ - int plen = write_immediate_assignment(immediate_assignment, 1, 125, (tbf->pdch->last_rts_fn + 21216) % 2715648, tbf->ta, tbf->arfcn, tbf->ts, tbf->tsc, tbf->tfi, 0, tbf->tlli, poll, tbf->poll_fn); + int plen = write_immediate_assignment(immediate_assignment, 1, 125, (tbf->pdch[tbf->first_ts]->last_rts_fn + 21216) % 2715648, tbf->ta, tbf->arfcn, tbf->first_ts, tbf->tsc, tbf->tfi, 0, tbf->tlli, poll, tbf->poll_fn); pcu_l1if_tx_pch(immediate_assignment, plen, imsi); bitvec_free(immediate_assignment); } @@ -1381,8 +1378,8 @@ void gprs_rlcmac_trigger_downlink_assignment(gprs_rlcmac_tbf *tbf, tbf_timer_start(tbf, 1234, 1,0); #else LOGP(DRLCMAC, LOGL_DEBUG, "Send dowlink assignment on " - "PACCH, because %slink TBF=%d exists for TLLI=0x%08x\n", - (tbf->direction == GPRS_RLCMAC_DL_TBF) ? "down" : "up", + "PACCH, because %s TBF=%d exists for TLLI=0x%08x\n", + (old_tbf->direction == GPRS_RLCMAC_UL_TBF) ? "UL" : "DL", old_tbf->tfi, old_tbf->tlli); old_tbf->dl_ass_state = GPRS_RLCMAC_DL_ASS_SEND_ASS; /* use TA from old TBF */ |