diff options
| -rw-r--r-- | configure.ac | 2 | ||||
| -rw-r--r-- | src/Makefile.am | 8 | ||||
| -rw-r--r-- | src/gprs_bssgp_pcu.cpp | 6 | ||||
| -rw-r--r-- | src/gprs_rlcmac.cpp | 150 | ||||
| -rw-r--r-- | src/gprs_rlcmac.h | 4 | ||||
| -rw-r--r-- | src/gprs_rlcmac_data.cpp | 14 | ||||
| -rw-r--r-- | src/gsmL1prim.h | 415 | ||||
| -rw-r--r-- | src/openbts_sock.cpp | 183 | ||||
| -rw-r--r-- | src/pcu_l1_if.cpp | 594 | ||||
| -rw-r--r-- | src/pcu_l1_if.h | 3 | ||||
| -rw-r--r-- | src/pcu_main.cpp | 3 | ||||
| -rw-r--r-- | src/pcuif_proto.h | 137 | ||||
| -rw-r--r-- | src/sysmo_l1_if.cpp | 716 | ||||
| -rw-r--r-- | src/sysmo_sock.cpp | 303 |
14 files changed, 1071 insertions, 1467 deletions
diff --git a/configure.ac b/configure.ac index 9fe9fdd4..c572c880 100644 --- a/configure.ac +++ b/configure.ac @@ -24,7 +24,7 @@ dnl checks for libraries PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 0.3.9) PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty) PKG_CHECK_MODULES(LIBOSMOGSM, libosmogsm >= 0.3.3) -PKG_CHECK_MODULES(LIBOSMOGB, libosmogb >= 0.5.2) +PKG_CHECK_MODULES(LIBOSMOGB, libosmogb >= 0.5.1.4) AC_MSG_CHECKING([whether to enable sysmocom-bts hardware support]) AC_ARG_ENABLE(sysmocom-bts, diff --git a/src/Makefile.am b/src/Makefile.am index 78c01e1d..ca586fda 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -32,14 +32,15 @@ libgprs_la_SOURCES = \ gprs_rlcmac_data.cpp \ gprs_rlcmac_sched.cpp \ gsm_timer.cpp \ - bitvector.cpp + bitvector.cpp \ + pcu_l1_if.cpp if ENABLE_SYSMOBTS libgprs_la_SOURCES += \ - sysmo_l1_if.cpp + sysmo_sock.cpp else libgprs_la_SOURCES += \ - pcu_l1_if.cpp + openbts_sock.cpp endif noinst_PROGRAMS = \ @@ -52,6 +53,7 @@ noinst_HEADERS = \ gsm_rlcmac.h \ gprs_bssgp_pcu.h \ gprs_rlcmac.h \ + pcuif_proto.h \ pcu_l1_if.h \ gsm_timer.h \ bitvector.h diff --git a/src/gprs_bssgp_pcu.cpp b/src/gprs_bssgp_pcu.cpp index 733d4e29..f9a421a5 100644 --- a/src/gprs_bssgp_pcu.cpp +++ b/src/gprs_bssgp_pcu.cpp @@ -30,6 +30,7 @@ extern uint16_t spoof_mcc, spoof_mnc; int gprs_bssgp_pcu_rx_dl_ud(struct msgb *msg, struct tlv_parsed *tp) { struct bssgp_ud_hdr *budh; + int tfi; uint32_t tlli; int i, j; @@ -41,6 +42,10 @@ int gprs_bssgp_pcu_rx_dl_ud(struct msgb *msg, struct tlv_parsed *tp) budh = (struct bssgp_ud_hdr *)msgb_bssgph(msg); tlli = ntohl(budh->tlli); + if (!tbf) + { + return -1; + } /* LLC_PDU is mandatory IE */ if (!TLVP_PRESENT(tp, BSSGP_IE_LLC_PDU)) { @@ -127,6 +132,7 @@ int gprs_bssgp_pcu_rx_dl_ud(struct msgb *msg, struct tlv_parsed *tp) return 0; } + /* Receive a BSSGP PDU from a BSS on a PTP BVCI */ int gprs_bssgp_pcu_rx_ptp(struct msgb *msg, struct tlv_parsed *tp, struct bssgp_bvc_ctx *bctx) { diff --git a/src/gprs_rlcmac.cpp b/src/gprs_rlcmac.cpp index 7d28de12..9d2601c8 100644 --- a/src/gprs_rlcmac.cpp +++ b/src/gprs_rlcmac.cpp @@ -21,7 +21,6 @@ #include <gprs_bssgp_pcu.h> #include <pcu_l1_if.h> #include <gprs_rlcmac.h> -#include <gsmL1prim.h> LLIST_HEAD(gprs_rlcmac_tbfs); void *rlcmac_tall_ctx; @@ -247,7 +246,7 @@ static void tbf_gsm_timer_cb(void *_tbf) switch (tbf->fT) { case 0: -hier alles überdenken +hier alles berdenken // This is timer for delay RLC/MAC data sending after Downlink Immediate Assignment on CCCH. gprs_rlcmac_segment_llc_pdu(tbf); LOGP(DRLCMAC, LOGL_NOTICE, "TBF: [DOWNLINK] END TFI: %u TLLI: 0x%08x \n", tbf->tfi, tbf->tlli); @@ -485,66 +484,79 @@ void write_packet_uplink_assignment(bitvec * dest, uint8_t old_tfi, // bitvec_write_field(dest, wp,0x0,1); // Measurement Mapping struct not present } + /* generate downlink assignment */ -void write_packet_downlink_assignment(bitvec * dest, uint8_t old_tfi, +void write_packet_downlink_assignment(RlcMacDownlink_t * block, uint8_t old_tfi, uint8_t old_downlink, uint8_t new_tfi, uint16_t arfcn, uint8_t tn, uint8_t ta, uint8_t tsc, uint8_t poll) { - // TODO We should use our implementation of encode RLC/MAC Control messages. - unsigned wp = 0; + // Packet downlink assignment TS 44.060 11.2.7 + int i; - bitvec_write_field(dest, wp,0x1,2); // Payload Type - bitvec_write_field(dest, wp,0x0,2); // Uplink block with TDMA framenumber (FN+13) - bitvec_write_field(dest, wp,poll,1); // Suppl/Polling Bit - bitvec_write_field(dest, wp,0x0,3); // Uplink state flag - bitvec_write_field(dest, wp,0x2,6); // MESSAGE TYPE - bitvec_write_field(dest, wp,0x0,2); // Page Mode - bitvec_write_field(dest, wp,0x0,1); // switch PERSIST_LEVEL: off - bitvec_write_field(dest, wp,0x0,1); // switch TFI : on - bitvec_write_field(dest, wp,old_downlink,1); // 0=UPLINK TFI, 1=DL TFI - bitvec_write_field(dest, wp,old_tfi,5); // TFI + block->PAYLOAD_TYPE = 0x1; // RLC/MAC control block that does not include the optional octets of the RLC/MAC control header + block->RRBP = 0x0; // N+13 + block->SP = poll; // RRBP field is valid + block->USF = 0x0; // Uplink state flag - bitvec_write_field(dest, wp,0x0,1); // Message escape - bitvec_write_field(dest, wp,0x0,2); // Medium Access Method: Dynamic Allocation - bitvec_write_field(dest, wp,0x0,1); // RLC acknowledged mode + block->u.Packet_Downlink_Assignment.MESSAGE_TYPE = 0x2; // Packet Downlink Assignment + block->u.Packet_Downlink_Assignment.PAGE_MODE = 0x0; // Normal Paging - bitvec_write_field(dest, wp,old_downlink,1); // the network establishes no new downlink TBF for the mobile station - bitvec_write_field(dest, wp,0x80 >> tn,8); // timeslot(s) + block->u.Packet_Downlink_Assignment.Exist_PERSISTENCE_LEVEL = 0x0; // PERSISTENCE_LEVEL: off - bitvec_write_field(dest, wp,0x1,1); // switch TIMING_ADVANCE_VALUE = on - bitvec_write_field(dest, wp,ta,6); // TIMING_ADVANCE_VALUE - bitvec_write_field(dest, wp,0x0,1); // switch TIMING_ADVANCE_INDEX = off + block->u.Packet_Downlink_Assignment.ID.UnionType = 0x0; // TFI = on + block->u.Packet_Downlink_Assignment.ID.u.Global_TFI.UnionType = old_downlink; // 0=UPLINK TFI, 1=DL TFI + block->u.Packet_Downlink_Assignment.ID.u.Global_TFI.u.UPLINK_TFI = old_tfi; // TFI - bitvec_write_field(dest, wp,0x0,1); // switch POWER CONTROL = off - bitvec_write_field(dest, wp,0x1,1); // Frequency Parameters information elements = present + block->u.Packet_Downlink_Assignment.MAC_MODE = 0x0; // Dynamic Allocation + block->u.Packet_Downlink_Assignment.RLC_MODE = 0x0; // RLC acknowledged mode + block->u.Packet_Downlink_Assignment.CONTROL_ACK = old_downlink; // NW establishes no new DL TBF for the MS with running timer T3192 + block->u.Packet_Downlink_Assignment.TIMESLOT_ALLOCATION = 0x80 >> tn; // timeslot(s) - bitvec_write_field(dest, wp,tsc,3); // Training Sequence Code (TSC) = 2 - bitvec_write_field(dest, wp,0x0,2); // ARFCN = present - bitvec_write_field(dest, wp,arfcn,10); // ARFCN + block->u.Packet_Downlink_Assignment.Packet_Timing_Advance.Exist_TIMING_ADVANCE_VALUE = 0x1; // TIMING_ADVANCE_VALUE = on + block->u.Packet_Downlink_Assignment.Packet_Timing_Advance.TIMING_ADVANCE_VALUE = ta; // TIMING_ADVANCE_VALUE + block->u.Packet_Downlink_Assignment.Packet_Timing_Advance.Exist_IndexAndtimeSlot = 0x0; // TIMING_ADVANCE_INDEX = off - bitvec_write_field(dest, wp,0x1,1); // switch TFI : on - bitvec_write_field(dest, wp,new_tfi,5);// TFI + block->u.Packet_Downlink_Assignment.Exist_P0_and_BTS_PWR_CTRL_MODE = 0x0; // POWER CONTROL = off + + block->u.Packet_Downlink_Assignment.Exist_Frequency_Parameters = 0x1; // Frequency Parameters = on + block->u.Packet_Downlink_Assignment.Frequency_Parameters.TSC = tsc; // Training Sequence Code (TSC) + block->u.Packet_Downlink_Assignment.Frequency_Parameters.UnionType = 0x0; // ARFCN = on + block->u.Packet_Downlink_Assignment.Frequency_Parameters.u.ARFCN = arfcn; // ARFCN + + block->u.Packet_Downlink_Assignment.Exist_DOWNLINK_TFI_ASSIGNMENT = 0x1; // DOWNLINK TFI ASSIGNMENT = on + block->u.Packet_Downlink_Assignment.DOWNLINK_TFI_ASSIGNMENT = new_tfi; // TFI + + block->u.Packet_Downlink_Assignment.Exist_Power_Control_Parameters = 0x1; // Power Control Parameters = on + block->u.Packet_Downlink_Assignment.Power_Control_Parameters.ALPHA = 0x0; // ALPHA - bitvec_write_field(dest, wp,0x1,1); // Power Control Parameters IE = present - bitvec_write_field(dest, wp,0x0,4); // ALPHA power control parameter for (i = 0; i < 8; i++) - bitvec_write_field(dest, wp,(tn == i),1); // switch GAMMA_TN[i] = on or off - bitvec_write_field(dest, wp,0x0,5); // GAMMA_TN[tn] + { + if (tn == i) + { + block->u.Packet_Downlink_Assignment.Power_Control_Parameters.Slot[i].Exist = 0x1; // Slot[i] = on + block->u.Packet_Downlink_Assignment.Power_Control_Parameters.Slot[i].GAMMA_TN = 0x0; // GAMMA_TN + } + else + { + block->u.Packet_Downlink_Assignment.Power_Control_Parameters.Slot[i].Exist = 0x0; // Slot[i] = off + } + } - bitvec_write_field(dest, wp,0x0,1); // TBF Starting TIME IE not present - bitvec_write_field(dest, wp,0x0,1); // Measurement Mapping struct not present - bitvec_write_field(dest, wp,0x0,1); + block->u.Packet_Downlink_Assignment.Exist_TBF_Starting_Time = 0x0; // TBF Starting TIME = off + block->u.Packet_Downlink_Assignment.Exist_Measurement_Mapping = 0x0; // Measurement_Mapping = off + block->u.Packet_Downlink_Assignment.Exist_AdditionsR99 = 0x0; // AdditionsR99 = off } /* generate uplink ack */ -void write_packet_uplink_ack(bitvec * dest, struct gprs_rlcmac_tbf *tbf, +void write_packet_uplink_ack(RlcMacDownlink_t * block, struct gprs_rlcmac_tbf *tbf, uint8_t final) { + // Packet Uplink Ack/Nack TS 44.060 11.2.28 + char show_v_n[65]; - // TODO We should use our implementation of encode RLC/MAC Control messages. - unsigned wp = 0; + uint8_t rbb = 0; uint16_t i, bbn; uint16_t mod_sns_half = (tbf->sns >> 1) - 1; char bit; @@ -552,30 +564,19 @@ void write_packet_uplink_ack(bitvec * dest, struct gprs_rlcmac_tbf *tbf, LOGP(DRLCMACUL, LOGL_DEBUG, "Sending Ack/Nack for TBF=%d " "(final=%d)\n", tbf->tfi, final); - bitvec_write_field(dest, wp,0x1,2); // payload - bitvec_write_field(dest, wp,0x0,2); // Uplink block with TDMA framenumber (N+13) - bitvec_write_field(dest, wp,final,1); // Suppl/Polling Bit - bitvec_write_field(dest, wp,0x0,3); // Uplink state flag - - //bitvec_write_field(dest, wp,0x0,1); // Reduced block sequence number - //bitvec_write_field(dest, wp,BSN+6,5); // Radio transaction identifier - //bitvec_write_field(dest, wp,0x1,1); // Final segment - //bitvec_write_field(dest, wp,0x1,1); // Address control + block->PAYLOAD_TYPE = 0x1; // RLC/MAC control block that does not include the optional octets of the RLC/MAC control header + block->RRBP = 0x0; // N+13 + block->SP = final; // RRBP field is valid, if it is final ack + block->USF = 0x0; // Uplink state flag - //bitvec_write_field(dest, wp,0x0,2); // Power reduction: 0 - //bitvec_write_field(dest, wp,TFI,5); // Temporary flow identifier - //bitvec_write_field(dest, wp,0x1,1); // Direction + block->u.Packet_Uplink_Ack_Nack.MESSAGE_TYPE = 0x9; // Packet Downlink Assignment + block->u.Packet_Uplink_Ack_Nack.PAGE_MODE = 0x0; // Normal Paging + block->u.Packet_Uplink_Ack_Nack.UPLINK_TFI = tbf->tfi; // Uplink TFI - bitvec_write_field(dest, wp,0x09,6); // MESSAGE TYPE - bitvec_write_field(dest, wp,0x0,2); // Page Mode - - bitvec_write_field(dest, wp,0x0,2); - bitvec_write_field(dest, wp,tbf->tfi,5); // Uplink TFI - bitvec_write_field(dest, wp,0x0,1); - - bitvec_write_field(dest, wp,0x0,2); // CS1 - bitvec_write_field(dest, wp,final,1); // FINAL_ACK_INDICATION - bitvec_write_field(dest, wp,tbf->dir.ul.v_r,7); // STARTING_SEQUENCE_NUMBER + block->u.Packet_Uplink_Ack_Nack.UnionType = 0x0; // PU_AckNack_GPRS = on + block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.CHANNEL_CODING_COMMAND = 0x0; // CS1 + block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Ack_Nack_Description.FINAL_ACK_INDICATION = final; // FINAL ACK INDICATION + block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Ack_Nack_Description.STARTING_SEQUENCE_NUMBER = tbf->dir.ul.v_r; // STARTING_SEQUENCE_NUMBER // RECEIVE_BLOCK_BITMAP for (i = 0, bbn = (tbf->dir.ul.v_r - 64) & mod_sns_half; i < 64; i++, bbn = (bbn + 1) & mod_sns_half) { @@ -583,15 +584,29 @@ void write_packet_uplink_ack(bitvec * dest, struct gprs_rlcmac_tbf *tbf, if (bit == 0) bit = ' '; show_v_n[i] = bit; - bitvec_write_field(dest, wp,(bit == 'R'),1); + if (bit == 'R') + rbb = (rbb << 1)|1; + else + rbb = (rbb << 1); + if((i%8) == 7) + { + block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Ack_Nack_Description.RECEIVED_BLOCK_BITMAP[i/8] = rbb; + rbb = 0; + } } show_v_n[64] = '\0'; LOGP(DRLCMACUL, LOGL_DEBUG, "- V(N): \"%s\" R=Received " "N=Not-Received\n", show_v_n); - bitvec_write_field(dest, wp,0x1,1); // CONTENTION_RESOLUTION_TLLI = present - bitvec_write_field(dest, wp,tbf->tlli,8*4); - bitvec_write_field(dest, wp,0x00,4); //spare - bitvec_write_field(dest, wp,0x5,4); //0101 + + block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.UnionType = 0x0; // Fixed Allocation Dummy = on + block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.u.FixedAllocationDummy = 0x0; // Fixed Allocation Dummy + block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Exist_AdditionsR99 = 0x0; // AdditionsR99 = off + + block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.Exist_CONTENTION_RESOLUTION_TLLI = 0x1; + block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.CONTENTION_RESOLUTION_TLLI = tbf->tlli; + block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.Exist_Packet_Timing_Advance = 0x0; + block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.Exist_Extension_Bits = 0x0; + block->u.Packet_Uplink_Ack_Nack.u.PU_AckNack_GPRS_Struct.Common_Uplink_Ack_Nack_Data.Exist_Power_Control_Parameters = 0x0; } /* Send Uplink unit-data to SGSN. */ @@ -613,4 +628,3 @@ int gprs_rlcmac_tx_ul_ud(gprs_rlcmac_tbf *tbf) return 0; } - diff --git a/src/gprs_rlcmac.h b/src/gprs_rlcmac.h index abb99808..635a6b11 100644 --- a/src/gprs_rlcmac.h +++ b/src/gprs_rlcmac.h @@ -228,11 +228,11 @@ void write_packet_uplink_assignment(bitvec * dest, uint8_t old_tfi, uint8_t usf, uint16_t arfcn, uint8_t tn, uint8_t ta, uint8_t tsc, uint8_t poll); -void write_packet_downlink_assignment(bitvec * dest, uint8_t old_tfi, +void write_packet_downlink_assignment(RlcMacDownlink_t * block, uint8_t old_tfi, uint8_t old_downlink, uint8_t new_tfi, uint16_t arfcn, uint8_t tn, uint8_t ta, uint8_t tsc, uint8_t poll); -void write_packet_uplink_ack(bitvec * dest, struct gprs_rlcmac_tbf *tbf, +void write_packet_uplink_ack(RlcMacDownlink_t * block, struct gprs_rlcmac_tbf *tbf, uint8_t final); int gprs_rlcmac_tx_ul_ud(gprs_rlcmac_tbf *tbf); diff --git a/src/gprs_rlcmac_data.cpp b/src/gprs_rlcmac_data.cpp index a87fef1b..7beca38f 100644 --- a/src/gprs_rlcmac_data.cpp +++ b/src/gprs_rlcmac_data.cpp @@ -540,9 +540,12 @@ struct msgb *gprs_rlcmac_send_uplink_ack(struct gprs_rlcmac_tbf *tbf, } bitvec_unhex(ack_vec, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); - write_packet_uplink_ack(ack_vec, tbf, final); + RlcMacDownlink_t * mac_control_block = (RlcMacDownlink_t *)malloc(sizeof(RlcMacDownlink_t)); + write_packet_uplink_ack(mac_control_block, tbf, final); + encode_gsm_rlcmac_downlink(ack_vec, mac_control_block); bitvec_pack(ack_vec, msgb_put(msg, 23)); bitvec_free(ack_vec); + free(mac_control_block); if (final) { tbf->poll_state = GPRS_RLCMAC_POLL_SCHED; @@ -1314,17 +1317,18 @@ struct msgb *gprs_rlcmac_send_packet_downlink_assignment( bitvec_unhex(ass_vec, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); LOGP(DRLCMAC, LOGL_INFO, "TBF: START TFI: %u TLLI: 0x%08x Packet Downlink Assignment (PACCH)\n", new_tbf->tfi, new_tbf->tlli); - write_packet_downlink_assignment(ass_vec, tbf->tfi, + 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, 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 Downlink Assignment +++++++++++++++++++++++++\n"); - decode_gsm_rlcmac_downlink(ass_vec, mac_control_block); + encode_gsm_rlcmac_downlink(ass_vec, mac_control_block); LOGPC(DCSN1, LOGL_NOTICE, "\n"); LOGP(DRLCMAC, LOGL_DEBUG, "------------------------- TX : Packet Downlink Assignment -------------------------\n"); + bitvec_pack(ass_vec, msgb_put(msg, 23)); bitvec_free(ass_vec); + free(mac_control_block); #if POLLING_ASSIGNMENT == 1 tbf->poll_state = GPRS_RLCMAC_POLL_SCHED; diff --git a/src/gsmL1prim.h b/src/gsmL1prim.h deleted file mode 100644 index b348a1a4..00000000 --- a/src/gsmL1prim.h +++ /dev/null @@ -1,415 +0,0 @@ -/* -* Copyright 2012 Thomas Cooper <tacooper@vt.edu> -* -* This software is distributed under the terms of the GNU Affero Public License. -* See the COPYING file in the main directory for details. -* -* This use of this software may be subject to additional restrictions. -* See the LEGAL file in the main directory for details. - -This program is free software: you can redistribute it and/or modify -it under the terms of the GNU Affero General Public License as published by -the Free Software Foundation, either version 3 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 Affero General Public License for more details. - -You should have received a copy of the GNU Affero General Public License -along with this program. If not, see <http://www.gnu.org/licenses/>. - -*/ - -#ifndef GSML1PRIM_H -#define GSML1PRIM_H - -#include <stdint.h> - -typedef enum GsmL1_SubCh_t { -GsmL1_SubCh_NA, -} GsmL1_SubCh_t; - -typedef enum GsmL1_Sapi_t { -GsmL1_Sapi_Fcch, -GsmL1_Sapi_Sch, -GsmL1_Sapi_Sacch, -GsmL1_Sapi_Sdcch, -GsmL1_Sapi_Bcch, -GsmL1_Sapi_Pch, -GsmL1_Sapi_Agch, -GsmL1_Sapi_Cbch, -GsmL1_Sapi_Rach, -GsmL1_Sapi_TchF, -GsmL1_Sapi_FacchF, -GsmL1_Sapi_TchH, -GsmL1_Sapi_FacchH, -GsmL1_Sapi_Nch, -GsmL1_Sapi_Pdtch, -GsmL1_Sapi_Pacch, -GsmL1_Sapi_Pbcch, -GsmL1_Sapi_Pagch, -GsmL1_Sapi_Ppch, -GsmL1_Sapi_Pnch, -GsmL1_Sapi_Ptcch, -GsmL1_Sapi_Prach, -GsmL1_Sapi_Idle, -GsmL1_Sapi_NUM, -} GsmL1_Sapi_t; - -typedef enum GsmL1_Status_t { -GsmL1_Status_Success, -GsmL1_Status_Generic, -GsmL1_Status_NoMemory, -GsmL1_Status_Timeout, -GsmL1_Status_InvalidParam, -GsmL1_Status_Busy, -GsmL1_Status_NoRessource, -GsmL1_Status_Uninitialized, -GsmL1_Status_NullInterface, -GsmL1_Status_NullFctnPtr, -GsmL1_Status_BadCrc, -GsmL1_Status_BadUsf, -GsmL1_Status_InvalidCPS, -GsmL1_Status_UnexpectedBurst, -GsmL1_Status_UnavailCodec, -GsmL1_Status_CriticalError, -GsmL1_Status_OverheatError, -GsmL1_Status_DeviceError, -GsmL1_Status_FacchError, -GsmL1_Status_AlreadyDeactivated, -GsmL1_Status_TxBurstFifoOvrn, -GsmL1_Status_TxBurstFifoUndr, -GsmL1_Status_NotSynchronized, -GsmL1_Status_Unsupported, -GSML1_STATUS_NUM, -} GsmL1_Status_t; - -typedef enum GsmL1_PrimId_t { -GsmL1_PrimId_MphInitReq, -GsmL1_PrimId_MphCloseReq, -GsmL1_PrimId_MphConnectReq, -GsmL1_PrimId_MphDisconnectReq, -GsmL1_PrimId_MphActivateReq, -GsmL1_PrimId_MphDeactivateReq, -GsmL1_PrimId_MphConfigReq, -GsmL1_PrimId_MphMeasureReq, -GsmL1_PrimId_MphInitCnf, -GsmL1_PrimId_MphCloseCnf, -GsmL1_PrimId_MphConnectCnf, -GsmL1_PrimId_MphDisconnectCnf, -GsmL1_PrimId_MphActivateCnf, -GsmL1_PrimId_MphDeactivateCnf, -GsmL1_PrimId_MphConfigCnf, -GsmL1_PrimId_MphMeasureCnf, -GsmL1_PrimId_MphTimeInd, -GsmL1_PrimId_MphSyncInd, -GsmL1_PrimId_PhEmptyFrameReq, -GsmL1_PrimId_PhDataReq, -GsmL1_PrimId_PhConnectInd, -GsmL1_PrimId_PhReadyToSendInd, -GsmL1_PrimId_PhDataInd, -GsmL1_PrimId_PhRaInd, -GsmL1_PrimId_NUM, -} GsmL1_PrimId_t; - -typedef enum GsmL1_Dir_t { -GsmL1_Dir_TxDownlink, -GsmL1_Dir_RxUplink, -} GsmL1_Dir_t; - -typedef enum GsmL1_DevType_t { -GsmL1_DevType_TxdRxu, -} GsmL1_DevType_t; - -typedef enum GsmL1_TchPlType_t { -GsmL1_TchPlType_NA, -GsmL1_TchPlType_Efr, -GsmL1_TchPlType_Fr, -GsmL1_TchPlType_Hr, -GsmL1_TchPlType_Amr, -GsmL1_TchPlType_Amr_SidBad, -GsmL1_TchPlType_Amr_Onset, -GsmL1_TchPlType_Amr_Ratscch, -GsmL1_TchPlType_Amr_SidUpdateInH, -GsmL1_TchPlType_Amr_SidFirstP1, -GsmL1_TchPlType_Amr_SidFirstP2, -GsmL1_TchPlType_Amr_SidFirstInH, -GsmL1_TchPlType_Amr_RatscchMarker, -GsmL1_TchPlType_Amr_RatscchData, -} GsmL1_TchPlType_t; - -typedef enum GsmL1_ConfigParamId_t { -GsmL1_ConfigParamId_SetNbTsc, -GsmL1_ConfigParamId_SetTxPowerLevel, -GsmL1_ConfigParamId_SetLogChParams, -GsmL1_ConfigParamId_SetCipheringParams, -} GsmL1_ConfigParamId_t; - -typedef struct GsmL1_DeviceParam_t { -enum GsmL1_DevType_t devType; -int freqBand; -uint16_t u16Arfcn; -uint16_t u16BcchArfcn; -uint8_t u8NbTsc; -uint8_t u8Ncc; -float fRxPowerLevel; -float fTxPowerLevel; -} GsmL1_DeviceParam_t; - -typedef struct GsmL1_MsgUnitParam_t { -uint8_t u8Buffer[256]; -uint8_t u8Size; -} GsmL1_MsgUnitParam_t; - -typedef struct GsmL1_MeasParam_t { -float fRssi; -float fLinkQuality; -float fBer; -int16_t i16BurstTiming; -} GsmL1_MeasParam_t; - -typedef struct GsmL1_LogChParam_t { -union { -struct { -enum GsmL1_TchPlType_t tchPlType; - -enum { -GsmL1_AmrCmiPhase_NA, -GsmL1_AmrCmiPhase_Odd, -} amrCmiPhase; - -enum { -GsmL1_AmrCodecMode_Unset, -} amrInitCodecMode; - -enum { -GsmL1_AmrCodec_Unset, -GsmL1_AmrCodec_4_75, -GsmL1_AmrCodec_5_15, -GsmL1_AmrCodec_5_9, -GsmL1_AmrCodec_6_7, -GsmL1_AmrCodec_7_4, -GsmL1_AmrCodec_7_95, -GsmL1_AmrCodec_10_2, -GsmL1_AmrCodec_12_2, -} amrActiveCodecSet[8]; -} tch; - -struct { -uint8_t u8Bsic; -uint8_t u8NbrOfAgch; -} rach; - -struct { -uint8_t u8MsPowerLevel; -} sacch; - -struct { -uint8_t u8NbrOfAgch; -} agch; -}; -} GsmL1_LogChParam_t; - -typedef enum GsmL1_LogChComb_t { -GsmL1_LogChComb_0, -GsmL1_LogChComb_I, -GsmL1_LogChComb_II, -GsmL1_LogChComb_IV, -GsmL1_LogChComb_V, -GsmL1_LogChComb_VII, -GsmL1_LogChComb_XIII, -} GsmL1_LogChComb_t; - -enum { -GsmL1_FreqBand_850, -GsmL1_FreqBand_900, -GsmL1_FreqBand_1800, -GsmL1_FreqBand_1900, -}; - -typedef struct GsmL1_MphInitReq_t { -struct GsmL1_DeviceParam_t deviceParam; -} GsmL1_MphInitReq_t; - -typedef struct GsmL1_MphCloseReq_t { -uint32_t hLayer1; -} GsmL1_MphCloseReq_t; - -typedef struct GsmL1_MphConnectReq_t { -uint32_t hLayer1; -uint8_t u8Tn; -enum GsmL1_LogChComb_t logChComb; -} GsmL1_MphConnectReq_t; - -typedef struct GsmL1_MphDisconnectReq_t { -uint32_t hLayer1; -} GsmL1_MphDisconnectReq_t; - -typedef struct GsmL1_MphActivateReq_t { -uint32_t hLayer1; -struct GsmL1_LogChParam_t logChPrm; -uint8_t u8Tn; -enum GsmL1_SubCh_t subCh; -enum GsmL1_Dir_t dir; -enum GsmL1_Sapi_t sapi; -uint32_t hLayer2; -float fBFILevel; -} GsmL1_MphActivateReq_t; - -typedef struct GsmL1_MphDeactivateReq_t { -uint32_t hLayer1; -uint8_t u8Tn; -enum GsmL1_SubCh_t subCh; -enum GsmL1_Dir_t dir; -enum GsmL1_Sapi_t sapi; -} GsmL1_MphDeactivateReq_t; - -typedef struct GsmL1_ConfigParam_t { -struct { -enum GsmL1_Sapi_t sapi; -uint8_t u8Tn; -enum GsmL1_SubCh_t subCh; -enum GsmL1_Dir_t dir; -struct GsmL1_LogChParam_t logChParams; -} setLogChParams; -} GsmL1_ConfigParam_t; - -typedef struct GsmL1_MphConfigReq_t { -uint32_t hLayer1; -enum GsmL1_ConfigParamId_t cfgParamId; -struct GsmL1_ConfigParam_t cfgParams; -} GsmL1_MphConfigReq_t; - -typedef struct GsmL1_MphConfigCnf_t { -enum GsmL1_Status_t status; -enum GsmL1_ConfigParamId_t cfgParamId; -struct GsmL1_ConfigParam_t cfgParams; -} GsmL1_MphConfigCnf_t; - -typedef struct GsmL1_MphMeasureReq_t { -uint32_t hLayer1; -} GsmL1_MphMeasureReq_t; - -typedef struct GsmL1_MphInitCnf_t { -uint32_t hLayer1; -enum GsmL1_Status_t status; -} GsmL1_MphInitCnf_t; - -typedef struct GsmL1_MphCloseCnf_t { -enum GsmL1_Status_t status; -} GsmL1_MphCloseCnf_t; - -typedef struct GsmL1_MphConnectCnf_t { -enum GsmL1_Status_t status; -} GsmL1_MphConnectCnf_t; - -typedef struct GsmL1_MphDisconnectCnf_t { -enum GsmL1_Status_t status; -} GsmL1_MphDisconnectCnf_t; - -typedef struct GsmL1_MphActivateCnf_t { -enum GsmL1_Status_t status; -uint8_t u8Tn; -int sapi; -} GsmL1_MphActivateCnf_t; - -typedef struct GsmL1_MphDeactivateCnf_t { -enum GsmL1_Status_t status; -uint8_t u8Tn; -enum GsmL1_Sapi_t sapi; -} GsmL1_MphDeactivateCnf_t; - -typedef struct GsmL1_MphMeasureCnf_t { -enum GsmL1_Status_t status; -} GsmL1_MphMeasureCnf_t; - -typedef struct GsmL1_MphTimeInd_t { -uint32_t u32Fn; -} GsmL1_MphTimeInd_t; - -typedef struct GsmL1_MphSyncInd_t { -} GsmL1_MphSyncInd_t; - -typedef struct GsmL1_PhEmptyFrameReq_t { -uint32_t hLayer1; -uint8_t u8Tn; -uint32_t u32Fn; -enum GsmL1_Sapi_t sapi; -enum GsmL1_SubCh_t subCh; -uint8_t u8BlockNbr; -} GsmL1_PhEmptyFrameReq_t; - -typedef struct GsmL1_PhDataReq_t { -uint32_t hLayer1; -uint8_t u8Tn; -uint32_t u32Fn; -enum GsmL1_Sapi_t sapi; -enum GsmL1_SubCh_t subCh; -uint8_t u8BlockNbr; -struct GsmL1_MsgUnitParam_t msgUnitParam; -} GsmL1_PhDataReq_t; - -typedef struct GsmL1_PhConnectInd_t { -uint8_t u8Tn; -uint8_t u8Tsc; -uint16_t u16Arfcn; -} GsmL1_PhConnectInd_t; - -typedef struct GsmL1_PhReadyToSendInd_t { -uint32_t hLayer1; -uint8_t u8Tn; -uint32_t u32Fn; -enum GsmL1_Sapi_t sapi; -enum GsmL1_SubCh_t subCh; -uint8_t u8BlockNbr; -uint32_t hLayer2; -} GsmL1_PhReadyToSendInd_t; - -typedef struct GsmL1_PhDataInd_t { -struct GsmL1_MeasParam_t measParam; -struct GsmL1_MsgUnitParam_t msgUnitParam; -enum GsmL1_Sapi_t sapi; -uint32_t hLayer2; -} GsmL1_PhDataInd_t; - -typedef struct GsmL1_PhRaInd_t { -struct GsmL1_MeasParam_t measParam; -struct GsmL1_MsgUnitParam_t msgUnitParam; -uint32_t u32Fn; -uint32_t hLayer2; -} GsmL1_PhRaInd_t; - -typedef struct GsmL1_Prim_t { -union { -struct GsmL1_MphInitReq_t mphInitReq; -struct GsmL1_MphCloseReq_t mphCloseReq; -struct GsmL1_MphConnectReq_t mphConnectReq; -struct GsmL1_MphDisconnectReq_t mphDisconnectReq; -struct GsmL1_MphActivateReq_t mphActivateReq; -struct GsmL1_MphDeactivateReq_t mphDeactivateReq; -struct GsmL1_MphConfigReq_t mphConfigReq; -struct GsmL1_MphMeasureReq_t mphMeasureReq; -struct GsmL1_MphInitCnf_t mphInitCnf; -struct GsmL1_MphCloseCnf_t mphCloseCnf; -struct GsmL1_MphConnectCnf_t mphConnectCnf; -struct GsmL1_MphDisconnectCnf_t mphDisconnectCnf; -struct GsmL1_MphActivateCnf_t mphActivateCnf; -struct GsmL1_MphDeactivateCnf_t mphDeactivateCnf; -struct GsmL1_MphConfigCnf_t mphConfigCnf; -struct GsmL1_MphMeasureCnf_t mphMeasureCnf; -struct GsmL1_MphTimeInd_t mphTimeInd; -struct GsmL1_MphSyncInd_t mphSyncInd; -struct GsmL1_PhEmptyFrameReq_t phEmptyFrameReq; -struct GsmL1_PhDataReq_t phDataReq; -struct GsmL1_PhConnectInd_t phConnectInd; -struct GsmL1_PhReadyToSendInd_t phReadyToSendInd; -struct GsmL1_PhDataInd_t phDataInd; -struct GsmL1_PhRaInd_t phRaInd; -} u; - -enum GsmL1_PrimId_t id; -} GsmL1_Prim_t; - -#endif diff --git a/src/openbts_sock.cpp b/src/openbts_sock.cpp new file mode 100644 index 00000000..cbf7adcc --- /dev/null +++ b/src/openbts_sock.cpp @@ -0,0 +1,183 @@ +/* openbts_sock.cpp + * + * Copyright (C) 2012 Ivan Klyuchnikov + * + * 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 <errno.h> +#include <string.h> +#include <gprs_rlcmac.h> +#include <gprs_bssgp_pcu.h> +#include <pcu_l1_if.h> +#include <gprs_debug.h> +#include <bitvector.h> +#include <sys/socket.h> +#include <arpa/inet.h> +extern "C" { +#include <osmocom/core/talloc.h> +#include <osmocom/core/write_queue.h> +#include <osmocom/core/socket.h> +#include <osmocom/core/timer.h> +#include <osmocom/gsm/gsm_utils.h> +#include <pcuif_proto.h> +} + +struct femtol1_hdl { + struct gsm_time gsm_time; + uint32_t hLayer1; /* handle to the L1 instance in the DSP */ + uint32_t dsp_trace_f; + uint16_t clk_cal; + struct llist_head wlc_list; + + void *priv; /* user reference */ + + struct osmo_timer_list alive_timer; + unsigned int alive_prim_cnt; + + struct osmo_fd read_ofd; /* osmo file descriptors */ + struct osmo_wqueue write_q; + + struct { + uint16_t arfcn; + uint8_t tn; + uint8_t tsc; + uint16_t ta; + } channel_info; + +}; + +struct l1fwd_hdl { + struct sockaddr_storage remote_sa; + socklen_t remote_sa_len; + + struct osmo_wqueue udp_wq; + + struct femtol1_hdl *fl1h; +}; + +struct l1fwd_hdl *l1fh = talloc_zero(NULL, struct l1fwd_hdl); + +// TODO: We should move this parameters to config file. +#define PCU_L1_IF_PORT 5944 + +/* OpenBTS socket functions */ + +int pcu_sock_send(struct msgb *msg) +{ + osmo_wqueue_enqueue(&l1fh->udp_wq, msg); + return 0; +} + +/* data has arrived on the udp socket */ +static int udp_read_cb(struct osmo_fd *ofd) +{ + struct msgb *msg = msgb_alloc_headroom(2048, 128, "udp_rx"); + struct l1fwd_hdl *l1fh = (l1fwd_hdl *)ofd->data; + struct femtol1_hdl *fl1h = l1fh->fl1h; + int rc; + + if (!msg) + return -ENOMEM; + + msg->l1h = msg->data; + + l1fh->remote_sa_len = sizeof(l1fh->remote_sa); + rc = recvfrom(ofd->fd, msg->l1h, msgb_tailroom(msg), 0, + (struct sockaddr *) &l1fh->remote_sa, &l1fh->remote_sa_len); + if (rc < 0) { + perror("read from udp"); + msgb_free(msg); + return rc; + } else if (rc == 0) { + perror("len=0 read from udp"); + msgb_free(msg); + return rc; + } + msgb_put(msg, rc); + + struct gsm_pcu_if *pcu_prim = (gsm_pcu_if *)(msg->l1h); + rc = pcu_rx(pcu_prim->msg_type, pcu_prim); + return rc; +} + +/* callback when we can write to the UDP socket */ +static int udp_write_cb(struct osmo_fd *ofd, struct msgb *msg) +{ + int rc; + struct l1fwd_hdl *l1fh = (l1fwd_hdl *)ofd->data; + + //LOGP(DPCU, LOGL_ERROR, "UDP: Writing %u bytes for MQ_L1_WRITE queue\n", msgb_length(msg)); + + rc = sendto(ofd->fd, msgb_data(msg), msgb_length(msg), 0, + (const struct sockaddr *)&l1fh->remote_sa, l1fh->remote_sa_len); + if (rc < 0) { + LOGP(DPCU, LOGL_ERROR, "error writing to L1 msg_queue: %s\n", + strerror(errno)); + return rc; + } else if (rc < (int)msgb_length(msg)) { + LOGP(DPCU, LOGL_ERROR, "short write to L1 msg_queue: " + "%u < %u\n", rc, msgb_length(msg)); + return -EIO; + } + + return 0; +} + +int pcu_l1if_open() +{ + struct femtol1_hdl *fl1h; + int rc; + + /* allocate new femtol1_handle */ + fl1h = talloc_zero(NULL, struct femtol1_hdl); + INIT_LLIST_HEAD(&fl1h->wlc_list); + + l1fh->fl1h = fl1h; + fl1h->priv = l1fh; + + struct osmo_wqueue * queue = &((l1fh->fl1h)->write_q); + osmo_wqueue_init(queue, 10); + queue->bfd.when |= BSC_FD_READ; + queue->bfd.data = l1fh; + queue->bfd.priv_nr = 0; + + /* Open UDP */ + struct osmo_wqueue *wq = &l1fh->udp_wq; + + osmo_wqueue_init(wq, 10); + wq->write_cb = udp_write_cb; + wq->read_cb = udp_read_cb; + wq->bfd.when |= BSC_FD_READ; + wq->bfd.data = l1fh; + wq->bfd.priv_nr = 0; + rc = osmo_sock_init_ofd(&wq->bfd, AF_UNSPEC, SOCK_DGRAM, + IPPROTO_UDP, NULL, PCU_L1_IF_PORT, + OSMO_SOCK_F_BIND); + if (rc < 0) { + perror("sock_init"); + exit(1); + } + + return 0; +} + +void pcu_l1if_close(void) +{ + gprs_bssgp_destroy(); + + /* FIXME: cleanup l1if */ + talloc_free(l1fh->fl1h); +} diff --git a/src/pcu_l1_if.cpp b/src/pcu_l1_if.cpp index 865a9118..fd8b3c34 100644 --- a/src/pcu_l1_if.cpp +++ b/src/pcu_l1_if.cpp @@ -1,6 +1,6 @@ /* pcu_l1_if.cpp * - * Copyright (C) 2012 Ivan Klyuchnikov + * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License @@ -17,62 +17,25 @@ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#include <errno.h> +#include <stdio.h> +#include <unistd.h> +#include <stdlib.h> #include <string.h> -#include <gprs_rlcmac.h> -#include <gprs_bssgp_pcu.h> -#include <pcu_l1_if.h> -#include <gprs_debug.h> -#include <bitvector.h> -#include <gsmL1prim.h> +#include <errno.h> +#include <assert.h> #include <sys/socket.h> -#include <arpa/inet.h> +#include <sys/un.h> extern "C" { #include <osmocom/core/talloc.h> -#include <osmocom/core/write_queue.h> -#include <osmocom/core/socket.h> -#include <osmocom/core/timer.h> -#include <osmocom/gsm/gsm_utils.h> +#include <osmocom/core/select.h> +#include <osmocom/core/msgb.h> } -#define MAX_UDP_LENGTH 1500 - -#define msgb_l1prim(msg) ((GsmL1_Prim_t *)(msg)->l1h) - -struct femtol1_hdl { - struct gsm_time gsm_time; - uint32_t hLayer1; /* handle to the L1 instance in the DSP */ - uint32_t dsp_trace_f; - uint16_t clk_cal; - struct llist_head wlc_list; - - void *priv; /* user reference */ - - struct osmo_timer_list alive_timer; - unsigned int alive_prim_cnt; - - struct osmo_fd read_ofd; /* osmo file descriptors */ - struct osmo_wqueue write_q; - - struct { - uint16_t arfcn; - uint8_t tn; - uint8_t tsc; - uint16_t ta; - } channel_info; - -}; - -struct l1fwd_hdl { - struct sockaddr_storage remote_sa; - socklen_t remote_sa_len; - - struct osmo_wqueue udp_wq; - - struct femtol1_hdl *fl1h; -}; - -struct l1fwd_hdl *l1fh = talloc_zero(NULL, struct l1fwd_hdl); +#include <gprs_rlcmac.h> +#include <pcu_l1_if.h> +#include <gprs_debug.h> +#include <gprs_bssgp_pcu.h> +#include <pcuif_proto.h> // Variable for storage current FN. int frame_number; @@ -87,277 +50,398 @@ void set_current_fn(int fn) frame_number = fn; } -struct msgb *l1p_msgb_alloc(void) +/* + * PCU messages + */ + +struct msgb *pcu_msgb_alloc(uint8_t msg_type, uint8_t bts_nr) { - struct msgb *msg = msgb_alloc(sizeof(GsmL1_Prim_t), "l1_prim"); + struct msgb *msg; + struct gsm_pcu_if *pcu_prim; - if (msg) - msg->l1h = msgb_put(msg, sizeof(GsmL1_Prim_t)); + msg = msgb_alloc(sizeof(struct gsm_pcu_if), "pcu_sock_tx"); + if (!msg) + return NULL; + msgb_put(msg, sizeof(struct gsm_pcu_if)); + pcu_prim = (struct gsm_pcu_if *) msg->data; + pcu_prim->msg_type = msg_type; + pcu_prim->bts_nr = bts_nr; return msg; } -// Send RLC/MAC block to OpenBTS. -void pcu_l1if_tx_pdtch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn, - uint32_t fn, uint8_t block_nr) +static int pcu_tx_act_req(uint8_t trx, uint8_t ts, uint8_t activate) { - struct msgb *nmsg = l1p_msgb_alloc(); - GsmL1_Prim_t *prim = msgb_l1prim(nmsg); - - prim->id = GsmL1_PrimId_PhDataReq; - prim->u.phDataReq.sapi = GsmL1_Sapi_Pdtch; - memcpy(prim->u.phDataReq.msgUnitParam.u8Buffer, msg->data, msg->len); - prim->u.phDataReq.msgUnitParam.u8Size = msg->len; - osmo_wqueue_enqueue(&l1fh->udp_wq, nmsg); - msgb_free(msg); + struct msgb *msg; + struct gsm_pcu_if *pcu_prim; + struct gsm_pcu_if_act_req *act_req; + + LOGP(DL1IF, LOGL_INFO, "Sending %s request: trx=%d ts=%d\n", + (activate) ? "activate" : "deactivate", trx, ts); + + msg = pcu_msgb_alloc(PCU_IF_MSG_ACT_REQ, 0); + if (!msg) + return -ENOMEM; + pcu_prim = (struct gsm_pcu_if *) msg->data; + act_req = &pcu_prim->u.act_req; + act_req->activate = activate; + act_req->trx_nr = trx; + act_req->ts_nr = ts; + + return pcu_sock_send(msg); } -void pcu_l1if_tx_agch(bitvec * block, int plen) +static int pcu_tx_data_req(uint8_t trx, uint8_t ts, uint8_t sapi, + uint16_t arfcn, uint32_t fn, uint8_t block_nr, uint8_t *data, + uint8_t len) { - struct msgb *msg = l1p_msgb_alloc(); - GsmL1_Prim_t *prim = msgb_l1prim(msg); - - prim->id = GsmL1_PrimId_PhDataReq; - prim->u.phDataReq.sapi = GsmL1_Sapi_Agch; - bitvec_pack(block, prim->u.phDataReq.msgUnitParam.u8Buffer); - prim->u.phDataReq.msgUnitParam.u8Size = 22; - osmo_wqueue_enqueue(&l1fh->udp_wq, msg); + struct msgb *msg; + struct gsm_pcu_if *pcu_prim; + struct gsm_pcu_if_data *data_req; + + LOGP(DL1IF, LOGL_DEBUG, "Sending data request: trx=%d ts=%d sapi=%d " + "arfcn=%d fn=%d block=%d data=%s\n", trx, ts, sapi, arfcn, fn, + block_nr, osmo_hexdump(data, len)); + + msg = pcu_msgb_alloc(PCU_IF_MSG_DATA_REQ, 0); + if (!msg) + return -ENOMEM; + pcu_prim = (struct gsm_pcu_if *) msg->data; + data_req = &pcu_prim->u.data_req; + + data_req->sapi = sapi; + data_req->fn = fn; + data_req->arfcn = arfcn; + data_req->trx_nr = trx; + data_req->ts_nr = ts; + data_req->block_nr = block_nr; + memcpy(data_req->data, data, len); + data_req->len = len; + + return pcu_sock_send(msg); } -void pcu_l1if_tx_pch(bitvec * block, int plen, char *imsi) +void pcu_l1if_tx_pdtch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn, + uint32_t fn, uint8_t block_nr) { - struct msgb *msg = l1p_msgb_alloc(); - GsmL1_Prim_t *prim = msgb_l1prim(msg); - - prim->id = GsmL1_PrimId_PhDataReq; - prim->u.phDataReq.sapi = GsmL1_Sapi_Pch; - bitvec_pack(block, prim->u.phDataReq.msgUnitParam.u8Buffer); - prim->u.phDataReq.msgUnitParam.u8Size = 22; - osmo_wqueue_enqueue(&l1fh->udp_wq, msg); + pcu_tx_data_req(trx, ts, PCU_IF_SAPI_PDTCH, arfcn, fn, block_nr, + msg->data, msg->len); + msgb_free(msg); } -int pcu_l1if_rx_pdch(GsmL1_PhDataInd_t *data_ind) +void pcu_l1if_tx_ptcch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn, + uint32_t fn, uint8_t block_nr) { - gprs_rlcmac_rcv_block(data_ind->msgUnitParam.u8Buffer, - data_ind->msgUnitParam.u8Size, data_ind->u32Fn); - - return 0; + pcu_tx_data_req(trx, ts, PCU_IF_SAPI_PTCCH, arfcn, fn, block_nr, + msg->data, msg->len); + msgb_free(msg); } -static int handle_ph_connect_ind(struct femtol1_hdl *fl1, GsmL1_PhConnectInd_t *connect_ind) +void pcu_l1if_tx_agch(bitvec * block, int plen) { - struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; - - bts->trx[0].arfcn = connect_ind->u16Arfcn; - bts->trx[0].pdch[connect_ind->u8Tn].enable = 1; - bts->trx[0].pdch[connect_ind->u8Tn].tsc = connect_ind->u8Tsc; - (l1fh->fl1h)->channel_info.arfcn = connect_ind->u16Arfcn; - (l1fh->fl1h)->channel_info.tn = connect_ind->u8Tn; - (l1fh->fl1h)->channel_info.tsc = connect_ind->u8Tsc; - LOGP(DL1IF, LOGL_NOTICE, "RX: [ PCU <- BTS ] PhConnectInd: ARFCN: %u TN: %u TSC: %u \n", - connect_ind->u16Arfcn, (unsigned)connect_ind->u8Tn, (unsigned)connect_ind->u8Tsc); + uint8_t data[23]; /* prefix PLEN */ + + /* FIXME: why does OpenBTS has no PLEN and no fill in message? */ + bitvec_pack(block, data + 1); + data[0] = (plen << 2) | 0x01; + pcu_tx_data_req(0, 0, PCU_IF_SAPI_AGCH, 0, 0, 0, data, 23); +} - return 0; +void pcu_l1if_tx_pch(bitvec * block, int plen, char *imsi) +{ + uint8_t data[23+3]; /* prefix PLEN */ + + /* paging group */ + if (!imsi || strlen(imsi) < 3) + return; + imsi += strlen(imsi) - 3; + data[0] = imsi[0]; + data[1] = imsi[1]; + data[2] = imsi[2]; + + bitvec_pack(block, data + 3+1); + data[3] = (plen << 2) | 0x01; + pcu_tx_data_req(0, 0, PCU_IF_SAPI_PCH, 0, 0, 0, data, 23+3); } -static int handle_ph_readytosend_ind(struct femtol1_hdl *fl1, GsmL1_PhReadyToSendInd_t *readytosend_ind) +static void pcu_l1if_tx_bcch(uint8_t *data, int len) { - gprs_rlcmac_rcv_rts_block(0,0, (l1fh->fl1h)->channel_info.arfcn, readytosend_ind->u32Fn, 0); - return 1; + pcu_tx_data_req(0, 0, PCU_IF_SAPI_BCCH, 0, 0, 0, data, len); } -static int handle_ph_data_ind(struct femtol1_hdl *fl1, GsmL1_PhDataInd_t *data_ind) +static int pcu_rx_data_ind(struct gsm_pcu_if_data *data_ind) { int rc = 0; + + LOGP(DL1IF, LOGL_DEBUG, "Data indication received: sapi=%d arfcn=%d " + "block=%d data=%s\n", data_ind->sapi, + data_ind->arfcn, data_ind->block_nr, + osmo_hexdump(data_ind->data, data_ind->len)); + switch (data_ind->sapi) { - case GsmL1_Sapi_Rach: - break; - case GsmL1_Sapi_Pdtch: - case GsmL1_Sapi_Pacch: - pcu_l1if_rx_pdch(data_ind); - break; - case GsmL1_Sapi_Pbcch: - case GsmL1_Sapi_Pagch: - case GsmL1_Sapi_Ppch: - case GsmL1_Sapi_Pnch: - case GsmL1_Sapi_Ptcch: - case GsmL1_Sapi_Prach: + case PCU_IF_SAPI_PDTCH: + rc = gprs_rlcmac_rcv_block(data_ind->data, data_ind->len, + data_ind->fn); break; default: - LOGP(DL1IF, LOGL_NOTICE, "Rx PH-DATA.ind for unknown L1 SAPI %u \n", data_ind->sapi); - break; + LOGP(DL1IF, LOGL_ERROR, "Received PCU data indication with " + "unsupported sapi %d\n", data_ind->sapi); + rc = -EINVAL; } return rc; } -static int handle_ph_ra_ind(struct femtol1_hdl *fl1, GsmL1_PhRaInd_t *ra_ind) +static int pcu_rx_rts_req(struct gsm_pcu_if_rts_req *rts_req) { int rc = 0; - (l1fh->fl1h)->channel_info.ta = ra_ind->measParam.i16BurstTiming; - rc = gprs_rlcmac_rcv_rach(ra_ind->msgUnitParam.u8Buffer[0], ra_ind->u32Fn, ra_ind->measParam.i16BurstTiming); - return rc; -} -/* handle any random indication from the L1 */ -int pcu_l1if_handle_l1prim(struct femtol1_hdl *fl1, struct msgb *msg) -{ - GsmL1_Prim_t *l1p = msgb_l1prim(msg); - int rc = 0; + LOGP(DL1IF, LOGL_DEBUG, "RTS request received: trx=%d ts=%d sapi=%d " + "arfcn=%d fn=%d block=%d\n", rts_req->trx_nr, rts_req->ts_nr, + rts_req->sapi, rts_req->arfcn, rts_req->fn, rts_req->block_nr); - switch (l1p->id) { - case GsmL1_PrimId_PhConnectInd: - rc = handle_ph_connect_ind(fl1, &l1p->u.phConnectInd); + switch (rts_req->sapi) { + case PCU_IF_SAPI_PDTCH: + gprs_rlcmac_rcv_rts_block(rts_req->trx_nr, rts_req->ts_nr, + rts_req->arfcn, rts_req->fn, rts_req->block_nr); break; - case GsmL1_PrimId_PhReadyToSendInd: - rc = handle_ph_readytosend_ind(fl1, &l1p->u.phReadyToSendInd); - break; - case GsmL1_PrimId_PhDataInd: - rc = handle_ph_data_ind(fl1, &l1p->u.phDataInd); - break; - case GsmL1_PrimId_PhRaInd: - rc = handle_ph_ra_ind(fl1, &l1p->u.phRaInd); + case PCU_IF_SAPI_PTCCH: + /* FIXME */ + { + struct msgb *msg = msgb_alloc(23, "l1_prim"); + memset(msgb_put(msg, 23), 0x2b, 23); + pcu_l1if_tx_ptcch(msg, rts_req->trx_nr, rts_req->ts_nr, + rts_req->arfcn, rts_req->fn, rts_req->block_nr); + } break; default: - break; + LOGP(DL1IF, LOGL_ERROR, "Received PCU RTS request with " + "unsupported sapi %d\n", rts_req->sapi); + rc = -EINVAL; } - /* Special return value '1' means: do not free */ - if (rc != 1) - msgb_free(msg); - return rc; } -PCU will currently not work without getting a GSM time or BFI indidication. -In order to fix this, i will discuss this on the mailing list. -Andreas - -/* OpenBTS socket functions */ - -// TODO: We should move this parameters to config file. -#define PCU_L1_IF_PORT 5944 - -/* data has arrived on the udp socket */ -static int udp_read_cb(struct osmo_fd *ofd) +static int pcu_rx_rach_ind(struct gsm_pcu_if_rach_ind *rach_ind) { - struct msgb *msg = msgb_alloc_headroom(2048, 128, "udp_rx"); - struct l1fwd_hdl *l1fh = (l1fwd_hdl *)ofd->data; - struct femtol1_hdl *fl1h = l1fh->fl1h; - int rc; - - if (!msg) - return -ENOMEM; + int rc = 0; - msg->l1h = msg->data; + LOGP(DL1IF, LOGL_INFO, "RACH request received: sapi=%d " + "qta=%d, ra=%d, fn=%d\n", rach_ind->sapi, rach_ind->qta, + rach_ind->ra, rach_ind->fn); - l1fh->remote_sa_len = sizeof(l1fh->remote_sa); - rc = recvfrom(ofd->fd, msg->l1h, msgb_tailroom(msg), 0, - (struct sockaddr *) &l1fh->remote_sa, &l1fh->remote_sa_len); - if (rc < 0) { - perror("read from udp"); - msgb_free(msg); - return rc; - } else if (rc == 0) { - perror("len=0 read from udp"); - msgb_free(msg); - return rc; + switch (rach_ind->sapi) { + case PCU_IF_SAPI_RACH: + rc = gprs_rlcmac_rcv_rach(rach_ind->ra, rach_ind->fn, + rach_ind->qta); + break; + default: + LOGP(DL1IF, LOGL_ERROR, "Received PCU rach request with " + "unsupported sapi %d\n", rach_ind->sapi); + rc = -EINVAL; } - msgb_put(msg, rc); - rc = pcu_l1if_handle_l1prim(fl1h, msg); return rc; } -/* callback when we can write to the UDP socket */ -static int udp_write_cb(struct osmo_fd *ofd, struct msgb *msg) +static int pcu_rx_info_ind(struct gsm_pcu_if_info_ind *info_ind) { - int rc; - struct l1fwd_hdl *l1fh = (l1fwd_hdl *)ofd->data; - - //DEBUGP(DGPRS, "UDP: Writing %u bytes for MQ_L1_WRITE queue\n", msgb_l1len(msg)); - - rc = sendto(ofd->fd, msg->l1h, msgb_l1len(msg), 0, - (const struct sockaddr *)&l1fh->remote_sa, l1fh->remote_sa_len); + struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; + int rc = 0; + int trx, ts, tfi; + struct gprs_rlcmac_tbf *tbf; + int i; + + LOGP(DL1IF, LOGL_DEBUG, "Info indication received:\n"); + + if (!(info_ind->flags & PCU_IF_FLAG_ACTIVE)) { + LOGP(DL1IF, LOGL_NOTICE, "BTS not available\n"); +bssgp_failed: + /* free all TBF */ + for (trx = 0; trx < 8; trx++) { + bts->trx[trx].arfcn = info_ind->trx[trx].arfcn; + for (ts = 0; ts < 8; ts++) { + for (tfi = 0; tfi < 32; tfi++) { + tbf = bts->trx[trx].pdch[ts].tbf[tfi]; + if (tbf) + tbf_free(tbf); + } + } + } + gprs_bssgp_destroy(); + return 0; + } + LOGP(DL1IF, LOGL_INFO, "BTS available\n"); + LOGP(DL1IF, LOGL_DEBUG, " mcc=%d\n", info_ind->mcc); + LOGP(DL1IF, LOGL_DEBUG, " mnc=%d\n", info_ind->mnc); + LOGP(DL1IF, LOGL_DEBUG, " lac=%d\n", info_ind->lac); + LOGP(DL1IF, LOGL_DEBUG, " rac=%d\n", info_ind->rac); + LOGP(DL1IF, LOGL_DEBUG, " cell_id=%d\n", info_ind->cell_id); + LOGP(DL1IF, LOGL_DEBUG, " nsei=%d\n", info_ind->nsei); + LOGP(DL1IF, LOGL_DEBUG, " nse_timer=%d %d %d %d %d %d %d\n", + info_ind->nse_timer[0], info_ind->nse_timer[1], + info_ind->nse_timer[2], info_ind->nse_timer[3], + info_ind->nse_timer[4], info_ind->nse_timer[5], + info_ind->nse_timer[6]); + LOGP(DL1IF, LOGL_DEBUG, " cell_timer=%d %d %d %d %d %d %d %d %d %d " + "%d\n", + info_ind->cell_timer[0], info_ind->cell_timer[1], + info_ind->cell_timer[2], info_ind->cell_timer[3], + info_ind->cell_timer[4], info_ind->cell_timer[5], + info_ind->cell_timer[6], info_ind->cell_timer[7], + info_ind->cell_timer[8], info_ind->cell_timer[9], + info_ind->cell_timer[10]); + LOGP(DL1IF, LOGL_DEBUG, " repeat_time=%d\n", info_ind->repeat_time); + LOGP(DL1IF, LOGL_DEBUG, " repeat_count=%d\n", info_ind->repeat_count); + LOGP(DL1IF, LOGL_DEBUG, " bvci=%d\n", info_ind->bvci); + LOGP(DL1IF, LOGL_DEBUG, " t3142=%d\n", info_ind->t3142); + LOGP(DL1IF, LOGL_DEBUG, " t3169=%d\n", info_ind->t3169); + LOGP(DL1IF, LOGL_DEBUG, " t3191=%d\n", info_ind->t3191); + LOGP(DL1IF, LOGL_DEBUG, " t3193=%d (ms)\n", info_ind->t3193_10ms * 10); + LOGP(DL1IF, LOGL_DEBUG, " t3195=%d\n", info_ind->t3195); + LOGP(DL1IF, LOGL_DEBUG, " n3101=%d\n", info_ind->n3101); + LOGP(DL1IF, LOGL_DEBUG, " n3103=%d\n", info_ind->n3103); + LOGP(DL1IF, LOGL_DEBUG, " n3105=%d\n", info_ind->n3105); + LOGP(DL1IF, LOGL_DEBUG, " cv_countdown=%d\n", info_ind->cv_countdown); + LOGP(DL1IF, LOGL_DEBUG, " dl_tbf_ext=%d\n", info_ind->dl_tbf_ext); + LOGP(DL1IF, LOGL_DEBUG, " ul_tbf_ext=%d\n", info_ind->ul_tbf_ext); + for (i = 0; i < 4; i++) { + if ((info_ind->flags & (PCU_IF_FLAG_CS1 << i))) + LOGP(DL1IF, LOGL_DEBUG, " Use CS%d\n", i+1); + } + for (i = 0; i < 9; i++) { + if ((info_ind->flags & (PCU_IF_FLAG_MCS1 << i))) + LOGP(DL1IF, LOGL_DEBUG, " Use MCS%d\n", i+1); + } + LOGP(DL1IF, LOGL_DEBUG, " initial_cs=%d\n", info_ind->initial_cs); + LOGP(DL1IF, LOGL_DEBUG, " initial_mcs=%d\n", info_ind->initial_mcs); + LOGP(DL1IF, LOGL_DEBUG, " nsvci=%d\n", info_ind->nsvci[0]); + LOGP(DL1IF, LOGL_DEBUG, " local_port=%d\n", info_ind->local_port[0]); + LOGP(DL1IF, LOGL_DEBUG, " remote_port=%d\n", info_ind->remote_port[0]); + LOGP(DL1IF, LOGL_DEBUG, " remote_ip=%d\n", info_ind->remote_ip[0]); + + rc = gprs_bssgp_create(info_ind->remote_ip[0], info_ind->remote_port[0], + info_ind->nsei, info_ind->nsvci[0], info_ind->bvci, + info_ind->mcc, info_ind->mnc, info_ind->lac, info_ind->rac, + info_ind->cell_id); if (rc < 0) { - LOGP(DPCU, LOGL_ERROR, "error writing to L1 msg_queue: %s\n", - strerror(errno)); - return rc; - } else if (rc < (int)msgb_l1len(msg)) { - LOGP(DPCU, LOGL_ERROR, "short write to L1 msg_queue: " - "%u < %u\n", rc, msgb_l1len(msg)); - return -EIO; + LOGP(DL1IF, LOGL_NOTICE, "SGSN not available\n"); + goto bssgp_failed; } - return 0; -} - -// TODO: We should move this parameters to config file. -#define SGSN_IP 127.0.0.1 -#define SGSN_PORT 23000 -#define NSEI 3 -#define NSVCI 4 - -#define BVCI 7 + bts->cs1 = !!(info_ind->flags & PCU_IF_FLAG_CS1); + bts->cs2 = !!(info_ind->flags & PCU_IF_FLAG_CS2); + bts->cs3 = !!(info_ind->flags & PCU_IF_FLAG_CS3); + bts->cs4 = !!(info_ind->flags & PCU_IF_FLAG_CS4); + if (!bts->cs1 && !bts->cs2 && !bts->cs3 && !bts->cs4) + bts->cs1 = 1; + if (info_ind->t3142) { /* if timer values are set */ + bts->t3142 = info_ind->t3142; + bts->t3169 = info_ind->t3169; + bts->t3191 = info_ind->t3191; + bts->t3193_msec = info_ind->t3193_10ms * 10; + bts->t3195 = info_ind->t3195; + bts->n3101 = info_ind->n3101; + bts->n3103 = info_ind->n3103; + bts->n3105 = info_ind->n3105; + } + if (info_ind->initial_cs < 1 || info_ind->initial_cs > 4) + bts->initial_cs = 1; + else + bts->initial_cs = info_ind->initial_cs; + + for (trx = 0; trx < 8; trx++) { + bts->trx[trx].arfcn = info_ind->trx[trx].arfcn; + for (ts = 0; ts < 8; ts++) { + if ((info_ind->trx[trx].pdch_mask & (1 << ts))) { + /* FIXME: activate dynamically at RLCMAC */ + if (!bts->trx[trx].pdch[ts].enable) + pcu_tx_act_req(trx, ts, 1); + bts->trx[trx].pdch[ts].enable = 1; + bts->trx[trx].pdch[ts].tsc = + info_ind->trx[trx].tsc[ts]; + LOGP(DL1IF, LOGL_INFO, "PDCH: trx=%d ts=%d\n", + trx, ts); + } else { + if (bts->trx[trx].pdch[ts].enable) + pcu_tx_act_req(trx, ts, 0); + bts->trx[trx].pdch[ts].enable = 0; + /* kick all tbf FIXME: multislot */ + for (tfi = 0; tfi < 32; tfi++) { + tbf = bts->trx[trx].pdch[ts].tbf[tfi]; + if (tbf) + tbf_free(tbf); + } + } + } + } -#define CELL_ID 0 -#define MNC 2 -#define MCC 262 -#define PCU_LAC 1 -#define PCU_RAC 0 + return rc; +} -int pcu_l1if_open() +static int pcu_rx_time_ind(struct gsm_pcu_if_time_ind *time_ind) { - //struct l1fwd_hdl *l1fh; - struct femtol1_hdl *fl1h; - int rc; - - struct sockaddr_in dest; - dest.sin_family = AF_INET; - dest.sin_port = htons(SGSN_PORT); - inet_aton(SGSN_IP, &dest.sin_addr); - - rc = gprs_bssgp_create(ntohl(dest.sin_addr.s_addr), SGSN_PORT, NSEI, NSVCI, BVCI, MCC, MNC, PCU_LAC, PCU_RAC, CELL_ID); - if (rc < 0) - return rc; - - /* allocate new femtol1_handle */ - fl1h = talloc_zero(NULL, struct femtol1_hdl); - INIT_LLIST_HEAD(&fl1h->wlc_list); - - l1fh->fl1h = fl1h; - fl1h->priv = l1fh; - - struct osmo_wqueue * queue = &((l1fh->fl1h)->write_q); - osmo_wqueue_init(queue, 10); - queue->bfd.when |= BSC_FD_READ; - queue->bfd.data = l1fh; - queue->bfd.priv_nr = 0; - - /* Open UDP */ - struct osmo_wqueue *wq = &l1fh->udp_wq; - - osmo_wqueue_init(wq, 10); - wq->write_cb = udp_write_cb; - wq->read_cb = udp_read_cb; - wq->bfd.when |= BSC_FD_READ; - wq->bfd.data = l1fh; - wq->bfd.priv_nr = 0; - rc = osmo_sock_init_ofd(&wq->bfd, AF_UNSPEC, SOCK_DGRAM, - IPPROTO_UDP, NULL, PCU_L1_IF_PORT, - OSMO_SOCK_F_BIND); - if (rc < 0) { - perror("sock_init"); - exit(1); + struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; + int trx, ts, tfi; + struct gprs_rlcmac_tbf *tbf; + uint32_t elapsed; + uint8_t fn13 = time_ind->fn % 13; + + /* omit frame numbers not starting at a MAC block */ + if (fn13 != 0 && fn13 != 4 && fn13 != 8) + return 0; + + LOGP(DL1IF, LOGL_DEBUG, "Time indication received: %d\n", + time_ind->fn % 52); + + set_current_fn(time_ind->fn); + + /* check for poll timeout */ + for (trx = 0; trx < 8; trx++) { + for (ts = 0; ts < 8; ts++) { + for (tfi = 0; tfi < 32; tfi++) { + tbf = bts->trx[trx].pdch[ts].tbf[tfi]; + if (!tbf) + continue; + if (tbf->poll_state != GPRS_RLCMAC_POLL_SCHED) + continue; + elapsed = (frame_number - tbf->poll_fn) + % 2715648; + if (elapsed >= 20 && elapsed < 200) + gprs_rlcmac_poll_timeout(tbf); + } + } } return 0; } -void pcu_l1if_close(void) +int pcu_rx(uint8_t msg_type, struct gsm_pcu_if *pcu_prim) { - gprs_bssgp_destroy(); + int rc = 0; + + switch (msg_type) { + case PCU_IF_MSG_DATA_IND: + rc = pcu_rx_data_ind(&pcu_prim->u.data_ind); + break; + case PCU_IF_MSG_RTS_REQ: + rc = pcu_rx_rts_req(&pcu_prim->u.rts_req); + break; + case PCU_IF_MSG_RACH_IND: + rc = pcu_rx_rach_ind(&pcu_prim->u.rach_ind); + break; + case PCU_IF_MSG_INFO_IND: + rc = pcu_rx_info_ind(&pcu_prim->u.info_ind); + break; + case PCU_IF_MSG_TIME_IND: + rc = pcu_rx_time_ind(&pcu_prim->u.time_ind); + break; + default: + LOGP(DL1IF, LOGL_ERROR, "Received unknwon PCU msg type %d\n", + msg_type); + rc = -EINVAL; + } - /* FIXME: cleanup l1if */ - talloc_free(fl1h); + return rc; } diff --git a/src/pcu_l1_if.h b/src/pcu_l1_if.h index 2aac5531..f3ac5971 100644 --- a/src/pcu_l1_if.h +++ b/src/pcu_l1_if.h @@ -36,9 +36,12 @@ void pcu_l1if_tx_pdtch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn, void pcu_l1if_tx_ptcch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn, uint32_t fn, uint8_t block_nr); void pcu_l1if_tx_agch(bitvec * block, int len); + void pcu_l1if_tx_pch(bitvec * block, int plen, char *imsi); int pcu_l1if_open(void); void pcu_l1if_close(void); +int pcu_rx(uint8_t msg_type, struct gsm_pcu_if *pcu_prim); +int pcu_sock_send(struct msgb *msg); #endif // PCU_L1_IF_H diff --git a/src/pcu_main.cpp b/src/pcu_main.cpp index ea507e5b..6c30c1e4 100644 --- a/src/pcu_main.cpp +++ b/src/pcu_main.cpp @@ -105,8 +105,8 @@ int main(int argc, char *argv[]) "together.\n"); exit(0); } - rc = pcu_l1if_open(); + if (rc < 0) return rc; @@ -124,4 +124,3 @@ int main(int argc, char *argv[]) return 0; } - diff --git a/src/pcuif_proto.h b/src/pcuif_proto.h new file mode 100644 index 00000000..3609f79d --- /dev/null +++ b/src/pcuif_proto.h @@ -0,0 +1,137 @@ +#ifndef _PCUIF_PROTO_H +#define _PCUIF_PROTO_H + +/* msg_type */ +#define PCU_IF_MSG_DATA_REQ 0x00 /* send data to given channel */ +#define PCU_IF_MSG_DATA_IND 0x02 /* receive data from given channel */ +#define PCU_IF_MSG_RTS_REQ 0x10 /* ready to send data to given chan. */ +#define PCU_IF_MSG_RACH_IND 0x22 /* receive rach */ +#define PCU_IF_MSG_INFO_IND 0x32 /* retrieve BTS info */ +#define PCU_IF_MSG_ACT_REQ 0x40 /* activate/deactivate PDCH */ +#define PCU_IF_MSG_TIME_IND 0x52 /* gsm time indication */ + +/* sapi */ +#define PCU_IF_SAPI_RACH 0x01 /* channel request on CCCH */ +#define PCU_IF_SAPI_AGCH 0x02 /* assignment on CCCH */ +#define PCU_IF_SAPI_PCH 0x03 /* paging request on CCCH */ +#define PCU_IF_SAPI_BCCH 0x04 /* SI on BCCH */ +#define PCU_IF_SAPI_PDTCH 0x05 /* packet data/control/ccch block */ +#define PCU_IF_SAPI_PRACH 0x06 /* packet random access channel */ +#define PCU_IF_SAPI_PTCCH 0x07 /* packet TA control channel */ + +/* flags */ +#define PCU_IF_FLAG_ACTIVE (1 << 0)/* BTS is active */ +#define PCU_IF_FLAG_SYSMO (1 << 1)/* access PDCH of sysmoBTS directly */ +#define PCU_IF_FLAG_CS1 (1 << 16) +#define PCU_IF_FLAG_CS2 (1 << 17) +#define PCU_IF_FLAG_CS3 (1 << 18) +#define PCU_IF_FLAG_CS4 (1 << 19) +#define PCU_IF_FLAG_MCS1 (1 << 20) +#define PCU_IF_FLAG_MCS2 (1 << 21) +#define PCU_IF_FLAG_MCS3 (1 << 22) +#define PCU_IF_FLAG_MCS4 (1 << 23) +#define PCU_IF_FLAG_MCS5 (1 << 24) +#define PCU_IF_FLAG_MCS6 (1 << 25) +#define PCU_IF_FLAG_MCS7 (1 << 26) +#define PCU_IF_FLAG_MCS8 (1 << 27) +#define PCU_IF_FLAG_MCS9 (1 << 28) + +struct gsm_pcu_if_data { + uint8_t sapi; + uint8_t len; + uint8_t data[162]; + uint32_t fn; + uint16_t arfcn; + uint8_t trx_nr; + uint8_t ts_nr; + uint8_t block_nr; +} __attribute__ ((packed)); + +struct gsm_pcu_if_rts_req { + uint8_t sapi; + uint8_t spare[3]; + uint32_t fn; + uint16_t arfcn; + uint8_t trx_nr; + uint8_t ts_nr; + uint8_t block_nr; +} __attribute__ ((packed)); + +struct gsm_pcu_if_rach_ind { + uint8_t sapi; + uint8_t ra; + int16_t qta; + uint32_t fn; + uint16_t arfcn; +} __attribute__ ((packed)); + +struct gsm_pcu_if_info_trx { + uint16_t arfcn; + uint8_t pdch_mask; /* PDCH channels per TS */ + uint8_t spare; + uint8_t tsc[8]; /* TSC per channel */ +} __attribute__ ((packed)); + +struct gsm_pcu_if_info_ind { + uint32_t flags; + struct gsm_pcu_if_info_trx trx[8]; /* TRX infos per BTS */ + /* RAI */ + uint16_t mcc, mnc, lac, rac; + /* NSE */ + uint16_t nsei; + uint8_t nse_timer[7]; + uint8_t cell_timer[11]; + /* cell */ + uint16_t cell_id; + uint16_t repeat_time; + uint8_t repeat_count; + uint16_t bvci; + uint8_t t3142; + uint8_t t3169; + uint8_t t3191; + uint8_t t3193_10ms; + uint8_t t3195; + uint8_t n3101; + uint8_t n3103; + uint8_t n3105; + uint8_t cv_countdown; + uint16_t dl_tbf_ext; + uint16_t ul_tbf_ext; + uint8_t initial_cs; + uint8_t initial_mcs; + /* NSVC */ + uint16_t nsvci[2]; + uint16_t local_port[2]; + uint16_t remote_port[2]; + uint32_t remote_ip[2]; +} __attribute__ ((packed)); + +struct gsm_pcu_if_act_req { + uint8_t activate; + uint8_t trx_nr; + uint8_t ts_nr; + uint8_t spare; +} __attribute__ ((packed)); + +struct gsm_pcu_if_time_ind { + uint32_t fn; +} __attribute__ ((packed)); + +struct gsm_pcu_if { + /* context based information */ + uint8_t msg_type; /* message type */ + uint8_t bts_nr; /* bts number */ + uint8_t spare[2]; + + union { + struct gsm_pcu_if_data data_req; + struct gsm_pcu_if_data data_ind; + struct gsm_pcu_if_rts_req rts_req; + struct gsm_pcu_if_rach_ind rach_ind; + struct gsm_pcu_if_info_ind info_ind; + struct gsm_pcu_if_act_req act_req; + struct gsm_pcu_if_time_ind time_ind; + } u; +} __attribute__ ((packed)); + +#endif /* _PCUIF_PROTO_H */ diff --git a/src/sysmo_l1_if.cpp b/src/sysmo_l1_if.cpp deleted file mode 100644 index ceb28d28..00000000 --- a/src/sysmo_l1_if.cpp +++ /dev/null @@ -1,716 +0,0 @@ -/* sysmo_l1_if.cpp - * - * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu> - * - * 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 <stdio.h> -#include <unistd.h> -#include <stdlib.h> -#include <string.h> -#include <errno.h> -#include <assert.h> -#include <sys/socket.h> -#include <sys/un.h> -extern "C" { -#include <osmocom/core/talloc.h> -#include <osmocom/core/select.h> -#include <osmocom/core/msgb.h> -} - -#include <gprs_rlcmac.h> -#include <pcu_l1_if.h> -#include <gprs_debug.h> -#include <gprs_bssgp_pcu.h> -#include "../../osmo-bts/include/osmo-bts/pcuif_proto.h" - -static int pcu_sock_send(struct msgb *msg); -static void pcu_sock_timeout(void *_priv); - -// Variable for storage current FN. -int frame_number; - -int get_current_fn() -{ - return frame_number; -} - -void set_current_fn(int fn) -{ - frame_number = fn; -} - -/* - * PCU messages - */ - -struct msgb *pcu_msgb_alloc(uint8_t msg_type, uint8_t bts_nr) -{ - struct msgb *msg; - struct gsm_pcu_if *pcu_prim; - - msg = msgb_alloc(sizeof(struct gsm_pcu_if), "pcu_sock_tx"); - if (!msg) - return NULL; - msgb_put(msg, sizeof(struct gsm_pcu_if)); - pcu_prim = (struct gsm_pcu_if *) msg->data; - pcu_prim->msg_type = msg_type; - pcu_prim->bts_nr = bts_nr; - - return msg; -} - -static int pcu_tx_act_req(uint8_t trx, uint8_t ts, uint8_t activate) -{ - struct msgb *msg; - struct gsm_pcu_if *pcu_prim; - struct gsm_pcu_if_act_req *act_req; - - LOGP(DL1IF, LOGL_INFO, "Sending %s request: trx=%d ts=%d\n", - (activate) ? "activate" : "deactivate", trx, ts); - - msg = pcu_msgb_alloc(PCU_IF_MSG_ACT_REQ, 0); - if (!msg) - return -ENOMEM; - pcu_prim = (struct gsm_pcu_if *) msg->data; - act_req = &pcu_prim->u.act_req; - act_req->activate = activate; - act_req->trx_nr = trx; - act_req->ts_nr = ts; - - return pcu_sock_send(msg); -} - -static int pcu_tx_data_req(uint8_t trx, uint8_t ts, uint8_t sapi, - uint16_t arfcn, uint32_t fn, uint8_t block_nr, uint8_t *data, - uint8_t len) -{ - struct msgb *msg; - struct gsm_pcu_if *pcu_prim; - struct gsm_pcu_if_data *data_req; - - LOGP(DL1IF, LOGL_DEBUG, "Sending data request: trx=%d ts=%d sapi=%d " - "arfcn=%d fn=%d block=%d data=%s\n", trx, ts, sapi, arfcn, fn, - block_nr, osmo_hexdump(data, len)); - - msg = pcu_msgb_alloc(PCU_IF_MSG_DATA_REQ, 0); - if (!msg) - return -ENOMEM; - pcu_prim = (struct gsm_pcu_if *) msg->data; - data_req = &pcu_prim->u.data_req; - - data_req->sapi = sapi; - data_req->fn = fn; - data_req->arfcn = arfcn; - data_req->trx_nr = trx; - data_req->ts_nr = ts; - data_req->block_nr = block_nr; - memcpy(data_req->data, data, len); - data_req->len = len; - - return pcu_sock_send(msg); -} - -void pcu_l1if_tx_pdtch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn, - uint32_t fn, uint8_t block_nr) -{ - pcu_tx_data_req(trx, ts, PCU_IF_SAPI_PDTCH, arfcn, fn, block_nr, - msg->data, msg->len); - msgb_free(msg); -} - -void pcu_l1if_tx_ptcch(msgb *msg, uint8_t trx, uint8_t ts, uint16_t arfcn, - uint32_t fn, uint8_t block_nr) -{ - pcu_tx_data_req(trx, ts, PCU_IF_SAPI_PTCCH, arfcn, fn, block_nr, - msg->data, msg->len); - msgb_free(msg); -} - -void pcu_l1if_tx_agch(bitvec * block, int plen) -{ - uint8_t data[23]; /* prefix PLEN */ - - /* FIXME: why does OpenBTS has no PLEN and no fill in message? */ - bitvec_pack(block, data + 1); - data[0] = (plen << 2) | 0x01; - pcu_tx_data_req(0, 0, PCU_IF_SAPI_AGCH, 0, 0, 0, data, 23); -} - -void pcu_l1if_tx_pch(bitvec * block, int plen, char *imsi) -{ - uint8_t data[23+3]; /* prefix PLEN */ - - /* paging group */ - if (!imsi || strlen(imsi) < 3) - return; - imsi += strlen(imsi) - 3; - data[0] = imsi[0]; - data[1] = imsi[1]; - data[2] = imsi[2]; - - bitvec_pack(block, data + 3+1); - data[3] = (plen << 2) | 0x01; - pcu_tx_data_req(0, 0, PCU_IF_SAPI_PCH, 0, 0, 0, data, 23+3); -} - -static void pcu_l1if_tx_bcch(uint8_t *data, int len) -{ - pcu_tx_data_req(0, 0, PCU_IF_SAPI_BCCH, 0, 0, 0, data, len); -} - -static int pcu_rx_data_ind(struct gsm_pcu_if_data *data_ind) -{ - int rc = 0; - - LOGP(DL1IF, LOGL_DEBUG, "Data indication received: sapi=%d arfcn=%d " - "block=%d data=%s\n", data_ind->sapi, - data_ind->arfcn, data_ind->block_nr, - osmo_hexdump(data_ind->data, data_ind->len)); - - switch (data_ind->sapi) { - case PCU_IF_SAPI_PDTCH: - rc = gprs_rlcmac_rcv_block(data_ind->data, data_ind->len, - data_ind->fn); - break; - default: - LOGP(DL1IF, LOGL_ERROR, "Received PCU data indication with " - "unsupported sapi %d\n", data_ind->sapi); - rc = -EINVAL; - } - - return rc; -} - -static int pcu_rx_rts_req(struct gsm_pcu_if_rts_req *rts_req) -{ - int rc = 0; - - LOGP(DL1IF, LOGL_DEBUG, "RTS request received: trx=%d ts=%d sapi=%d " - "arfcn=%d fn=%d block=%d\n", rts_req->trx_nr, rts_req->ts_nr, - rts_req->sapi, rts_req->arfcn, rts_req->fn, rts_req->block_nr); - - switch (rts_req->sapi) { - case PCU_IF_SAPI_PDTCH: - gprs_rlcmac_rcv_rts_block(rts_req->trx_nr, rts_req->ts_nr, - rts_req->arfcn, rts_req->fn, rts_req->block_nr); - break; - case PCU_IF_SAPI_PTCCH: - /* FIXME */ - { - struct msgb *msg = msgb_alloc(23, "l1_prim"); - memset(msgb_put(msg, 23), 0x2b, 23); - pcu_l1if_tx_ptcch(msg, rts_req->trx_nr, rts_req->ts_nr, - rts_req->arfcn, rts_req->fn, rts_req->block_nr); - } - break; - default: - LOGP(DL1IF, LOGL_ERROR, "Received PCU RTS request with " - "unsupported sapi %d\n", rts_req->sapi); - rc = -EINVAL; - } - - return rc; -} - -static int pcu_rx_rach_ind(struct gsm_pcu_if_rach_ind *rach_ind) -{ - int rc = 0; - - LOGP(DL1IF, LOGL_INFO, "RACH request received: sapi=%d " - "qta=%d, ra=%d, fn=%d\n", rach_ind->sapi, rach_ind->qta, - rach_ind->ra, rach_ind->fn); - - switch (rach_ind->sapi) { - case PCU_IF_SAPI_RACH: - rc = gprs_rlcmac_rcv_rach(rach_ind->ra, rach_ind->fn, - rach_ind->qta); - break; - default: - LOGP(DL1IF, LOGL_ERROR, "Received PCU rach request with " - "unsupported sapi %d\n", rach_ind->sapi); - rc = -EINVAL; - } - - return rc; -} - -static int pcu_rx_info_ind(struct gsm_pcu_if_info_ind *info_ind) -{ - struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; - int rc = 0; - int trx, ts, tfi; - struct gprs_rlcmac_tbf *tbf; - int i; - - LOGP(DL1IF, LOGL_DEBUG, "Info indication received:\n"); - - if (!(info_ind->flags & PCU_IF_FLAG_ACTIVE)) { - LOGP(DL1IF, LOGL_NOTICE, "BTS not available\n"); -bssgp_failed: - /* free all TBF */ - for (trx = 0; trx < 8; trx++) { - bts->trx[trx].arfcn = info_ind->trx[trx].arfcn; - for (ts = 0; ts < 8; ts++) { - for (tfi = 0; tfi < 32; tfi++) { - tbf = bts->trx[trx].pdch[ts].tbf[tfi]; - if (tbf) - tbf_free(tbf); - } - } - } - gprs_bssgp_destroy(); - return 0; - } - LOGP(DL1IF, LOGL_INFO, "BTS available\n"); - LOGP(DL1IF, LOGL_DEBUG, " mcc=%d\n", info_ind->mcc); - LOGP(DL1IF, LOGL_DEBUG, " mnc=%d\n", info_ind->mnc); - LOGP(DL1IF, LOGL_DEBUG, " lac=%d\n", info_ind->lac); - LOGP(DL1IF, LOGL_DEBUG, " rac=%d\n", info_ind->rac); - LOGP(DL1IF, LOGL_DEBUG, " cell_id=%d\n", info_ind->cell_id); - LOGP(DL1IF, LOGL_DEBUG, " nsei=%d\n", info_ind->nsei); - LOGP(DL1IF, LOGL_DEBUG, " nse_timer=%d %d %d %d %d %d %d\n", - info_ind->nse_timer[0], info_ind->nse_timer[1], - info_ind->nse_timer[2], info_ind->nse_timer[3], - info_ind->nse_timer[4], info_ind->nse_timer[5], - info_ind->nse_timer[6]); - LOGP(DL1IF, LOGL_DEBUG, " cell_timer=%d %d %d %d %d %d %d %d %d %d " - "%d\n", - info_ind->cell_timer[0], info_ind->cell_timer[1], - info_ind->cell_timer[2], info_ind->cell_timer[3], - info_ind->cell_timer[4], info_ind->cell_timer[5], - info_ind->cell_timer[6], info_ind->cell_timer[7], - info_ind->cell_timer[8], info_ind->cell_timer[9], - info_ind->cell_timer[10]); - LOGP(DL1IF, LOGL_DEBUG, " repeat_time=%d\n", info_ind->repeat_time); - LOGP(DL1IF, LOGL_DEBUG, " repeat_count=%d\n", info_ind->repeat_count); - LOGP(DL1IF, LOGL_DEBUG, " bvci=%d\n", info_ind->bvci); - LOGP(DL1IF, LOGL_DEBUG, " t3142=%d\n", info_ind->t3142); - LOGP(DL1IF, LOGL_DEBUG, " t3169=%d\n", info_ind->t3169); - LOGP(DL1IF, LOGL_DEBUG, " t3191=%d\n", info_ind->t3191); - LOGP(DL1IF, LOGL_DEBUG, " t3193=%d (ms)\n", info_ind->t3193_10ms * 10); - LOGP(DL1IF, LOGL_DEBUG, " t3195=%d\n", info_ind->t3195); - LOGP(DL1IF, LOGL_DEBUG, " n3101=%d\n", info_ind->n3101); - LOGP(DL1IF, LOGL_DEBUG, " n3103=%d\n", info_ind->n3103); - LOGP(DL1IF, LOGL_DEBUG, " n3105=%d\n", info_ind->n3105); - LOGP(DL1IF, LOGL_DEBUG, " cv_countdown=%d\n", info_ind->cv_countdown); - LOGP(DL1IF, LOGL_DEBUG, " dl_tbf_ext=%d\n", info_ind->dl_tbf_ext); - LOGP(DL1IF, LOGL_DEBUG, " ul_tbf_ext=%d\n", info_ind->ul_tbf_ext); - for (i = 0; i < 4; i++) { - if ((info_ind->flags & (PCU_IF_FLAG_CS1 << i))) - LOGP(DL1IF, LOGL_DEBUG, " Use CS%d\n", i+1); - } - for (i = 0; i < 9; i++) { - if ((info_ind->flags & (PCU_IF_FLAG_MCS1 << i))) - LOGP(DL1IF, LOGL_DEBUG, " Use MCS%d\n", i+1); - } - LOGP(DL1IF, LOGL_DEBUG, " initial_cs=%d\n", info_ind->initial_cs); - LOGP(DL1IF, LOGL_DEBUG, " initial_mcs=%d\n", info_ind->initial_mcs); - LOGP(DL1IF, LOGL_DEBUG, " nsvci=%d\n", info_ind->nsvci[0]); - LOGP(DL1IF, LOGL_DEBUG, " local_port=%d\n", info_ind->local_port[0]); - LOGP(DL1IF, LOGL_DEBUG, " remote_port=%d\n", info_ind->remote_port[0]); - LOGP(DL1IF, LOGL_DEBUG, " remote_ip=%d\n", info_ind->remote_ip[0]); - - rc = gprs_bssgp_create(info_ind->remote_ip[0], info_ind->remote_port[0], - info_ind->nsei, info_ind->nsvci[0], info_ind->bvci, - info_ind->mcc, info_ind->mnc, info_ind->lac, info_ind->rac, - info_ind->cell_id); - if (rc < 0) { - LOGP(DL1IF, LOGL_NOTICE, "SGSN not available\n"); - goto bssgp_failed; - } - - bts->cs1 = !!(info_ind->flags & PCU_IF_FLAG_CS1); - bts->cs2 = !!(info_ind->flags & PCU_IF_FLAG_CS2); - bts->cs3 = !!(info_ind->flags & PCU_IF_FLAG_CS3); - bts->cs4 = !!(info_ind->flags & PCU_IF_FLAG_CS4); - if (!bts->cs1 && !bts->cs2 && !bts->cs3 && !bts->cs4) - bts->cs1 = 1; - if (info_ind->t3142) { /* if timer values are set */ - bts->t3142 = info_ind->t3142; - bts->t3169 = info_ind->t3169; - bts->t3191 = info_ind->t3191; - bts->t3193_msec = info_ind->t3193_10ms * 10; - bts->t3195 = info_ind->t3195; - bts->n3101 = info_ind->n3101; - bts->n3103 = info_ind->n3103; - bts->n3105 = info_ind->n3105; - } - if (info_ind->initial_cs < 1 || info_ind->initial_cs > 4) - bts->initial_cs = 1; - else - bts->initial_cs = info_ind->initial_cs; - - for (trx = 0; trx < 8; trx++) { - bts->trx[trx].arfcn = info_ind->trx[trx].arfcn; - for (ts = 0; ts < 8; ts++) { - if ((info_ind->trx[trx].pdch_mask & (1 << ts))) { - /* FIXME: activate dynamically at RLCMAC */ - if (!bts->trx[trx].pdch[ts].enable) - pcu_tx_act_req(trx, ts, 1); - bts->trx[trx].pdch[ts].enable = 1; - bts->trx[trx].pdch[ts].tsc = - info_ind->trx[trx].tsc[ts]; - LOGP(DL1IF, LOGL_INFO, "PDCH: trx=%d ts=%d\n", - trx, ts); - } else { - if (bts->trx[trx].pdch[ts].enable) - pcu_tx_act_req(trx, ts, 0); - bts->trx[trx].pdch[ts].enable = 0; - /* kick all tbf FIXME: multislot */ - for (tfi = 0; tfi < 32; tfi++) { - tbf = bts->trx[trx].pdch[ts].tbf[tfi]; - if (tbf) - tbf_free(tbf); - } - } - } - } - - return rc; -} - -static int pcu_rx_time_ind(struct gsm_pcu_if_time_ind *time_ind) -{ - struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; - int trx, ts, tfi; - struct gprs_rlcmac_tbf *tbf; - uint32_t elapsed; - uint8_t fn13 = time_ind->fn % 13; - - /* omit frame numbers not starting at a MAC block */ - if (fn13 != 0 && fn13 != 4 && fn13 != 8) - return 0; - - LOGP(DL1IF, LOGL_DEBUG, "Time indication received: %d\n", - time_ind->fn % 52); - - set_current_fn(time_ind->fn); - - /* check for poll timeout */ - for (trx = 0; trx < 8; trx++) { - for (ts = 0; ts < 8; ts++) { - for (tfi = 0; tfi < 32; tfi++) { - tbf = bts->trx[trx].pdch[ts].tbf[tfi]; - if (!tbf) - continue; - if (tbf->poll_state != GPRS_RLCMAC_POLL_SCHED) - continue; - elapsed = (frame_number - tbf->poll_fn) - % 2715648; - if (elapsed >= 20 && elapsed < 200) - gprs_rlcmac_poll_timeout(tbf); - } - } - } - - return 0; -} - -static int pcu_rx(uint8_t msg_type, struct gsm_pcu_if *pcu_prim) -{ - int rc = 0; - - switch (msg_type) { - case PCU_IF_MSG_DATA_IND: - rc = pcu_rx_data_ind(&pcu_prim->u.data_ind); - break; - case PCU_IF_MSG_RTS_REQ: - rc = pcu_rx_rts_req(&pcu_prim->u.rts_req); - break; - case PCU_IF_MSG_RACH_IND: - rc = pcu_rx_rach_ind(&pcu_prim->u.rach_ind); - break; - case PCU_IF_MSG_INFO_IND: - rc = pcu_rx_info_ind(&pcu_prim->u.info_ind); - break; - case PCU_IF_MSG_TIME_IND: - rc = pcu_rx_time_ind(&pcu_prim->u.time_ind); - break; - default: - LOGP(DL1IF, LOGL_ERROR, "Received unknwon PCU msg type %d\n", - msg_type); - rc = -EINVAL; - } - - return rc; -} - -/* - * SYSMO-PCU socket functions - */ - -struct pcu_sock_state { - struct osmo_fd conn_bfd; /* fd for connection to lcr */ - struct osmo_timer_list timer; /* socket connect retry timer */ - struct llist_head upqueue; /* queue for sending messages */ -} *pcu_sock_state = NULL; - -static int pcu_sock_send(struct msgb *msg) -{ - struct pcu_sock_state *state = pcu_sock_state; - struct osmo_fd *conn_bfd; - - if (!state) { - LOGP(DL1IF, LOGL_NOTICE, "PCU socket not created, dropping " - "message\n"); - return -EINVAL; - } - conn_bfd = &state->conn_bfd; - if (conn_bfd->fd <= 0) { - LOGP(DL1IF, LOGL_NOTICE, "PCU socket not connected, dropping " - "message\n"); - return -EIO; - } - msgb_enqueue(&state->upqueue, msg); - conn_bfd->when |= BSC_FD_WRITE; - - return 0; -} - -static void pcu_sock_close(struct pcu_sock_state *state) -{ - struct osmo_fd *bfd = &state->conn_bfd; - struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; - struct gprs_rlcmac_tbf *tbf; - uint8_t trx, ts, tfi; - - LOGP(DL1IF, LOGL_NOTICE, "PCU socket has LOST connection\n"); - - close(bfd->fd); - bfd->fd = -1; - osmo_fd_unregister(bfd); - - /* flush the queue */ - while (!llist_empty(&state->upqueue)) { - struct msgb *msg = msgb_dequeue(&state->upqueue); - msgb_free(msg); - } - - /* disable all slots, kick all TBFs */ - for (trx = 0; trx < 8; trx++) { - for (ts = 0; ts < 8; ts++) { - bts->trx[trx].pdch[ts].enable = 0; - for (tfi = 0; tfi < 32; tfi++) { - tbf = bts->trx[trx].pdch[ts].tbf[tfi]; - if (tbf) - tbf_free(tbf); - } - } - } - - gprs_bssgp_destroy(); - - state->timer.cb = pcu_sock_timeout; - osmo_timer_schedule(&state->timer, 5, 0); -} - -static int pcu_sock_read(struct osmo_fd *bfd) -{ - struct pcu_sock_state *state = (struct pcu_sock_state *)bfd->data; - struct gsm_pcu_if *pcu_prim; - struct msgb *msg; - int rc; - - msg = msgb_alloc(sizeof(*pcu_prim), "pcu_sock_rx"); - if (!msg) - return -ENOMEM; - - pcu_prim = (struct gsm_pcu_if *) msg->tail; - - rc = recv(bfd->fd, msg->tail, msgb_tailroom(msg), 0); - if (rc == 0) - goto close; - - if (rc < 0) { - if (errno == EAGAIN) - return 0; - goto close; - } - - rc = pcu_rx(pcu_prim->msg_type, pcu_prim); - - /* as we always synchronously process the message in pcu_rx() and - * its callbacks, we can free the message here. */ - msgb_free(msg); - - return rc; - -close: - msgb_free(msg); - pcu_sock_close(state); - return -1; -} - -static int pcu_sock_write(struct osmo_fd *bfd) -{ - struct pcu_sock_state *state = (struct pcu_sock_state *)bfd->data; - int rc; - - while (!llist_empty(&state->upqueue)) { - struct msgb *msg, *msg2; - struct gsm_pcu_if *pcu_prim; - - /* peek at the beginning of the queue */ - msg = llist_entry(state->upqueue.next, struct msgb, list); - pcu_prim = (struct gsm_pcu_if *)msg->data; - - bfd->when &= ~BSC_FD_WRITE; - - /* bug hunter 8-): maybe someone forgot msgb_put(...) ? */ - if (!msgb_length(msg)) { - LOGP(DL1IF, LOGL_ERROR, "message type (%d) with ZERO " - "bytes!\n", pcu_prim->msg_type); - goto dontsend; - } - - /* try to send it over the socket */ - rc = write(bfd->fd, msgb_data(msg), msgb_length(msg)); - if (rc == 0) - goto close; - if (rc < 0) { - if (errno == EAGAIN) { - bfd->when |= BSC_FD_WRITE; - break; - } - goto close; - } - -dontsend: - /* _after_ we send it, we can deueue */ - msg2 = msgb_dequeue(&state->upqueue); - assert(msg == msg2); - msgb_free(msg); - } - return 0; - -close: - pcu_sock_close(state); - - return -1; -} - -static int pcu_sock_cb(struct osmo_fd *bfd, unsigned int flags) -{ - int rc = 0; - - if (flags & BSC_FD_READ) - rc = pcu_sock_read(bfd); - if (rc < 0) - return rc; - - if (flags & BSC_FD_WRITE) - rc = pcu_sock_write(bfd); - - return rc; -} - -int pcu_l1if_open(void) -{ - struct pcu_sock_state *state; - struct osmo_fd *bfd; - struct sockaddr_un local; - unsigned int namelen; - int rc; - - state = pcu_sock_state; - if (!state) { - state = talloc_zero(NULL, struct pcu_sock_state); - if (!state) - return -ENOMEM; - INIT_LLIST_HEAD(&state->upqueue); - } - - bfd = &state->conn_bfd; - - bfd->fd = socket(AF_UNIX, SOCK_SEQPACKET, 0); - if (bfd->fd < 0) { - LOGP(DL1IF, LOGL_ERROR, "Failed to create PCU-SYSMO socket.\n"); - talloc_free(state); - return -1; - } - - local.sun_family = AF_UNIX; - strncpy(local.sun_path, "/tmp/pcu_bts", sizeof(local.sun_path)); - local.sun_path[sizeof(local.sun_path) - 1] = '\0'; - - /* we use the same magic that X11 uses in Xtranssock.c for - * calculating the proper length of the sockaddr */ -#if defined(BSD44SOCKETS) || defined(__UNIXWARE__) - local.sun_len = strlen(local.sun_path); -#endif -#if defined(BSD44SOCKETS) || defined(SUN_LEN) - namelen = SUN_LEN(&local); -#else - namelen = strlen(local.sun_path) + - offsetof(struct sockaddr_un, sun_path); -#endif - rc = connect(bfd->fd, (struct sockaddr *) &local, namelen); - if (rc != 0) { - LOGP(DL1IF, LOGL_ERROR, "Failed to Connect the PCU-SYSMO " - "socket, delaying... '%s'\n", local.sun_path); - close(bfd->fd); - bfd->fd = -1; - state->timer.cb = pcu_sock_timeout; - osmo_timer_schedule(&state->timer, 5, 0); - return 0; - } - - bfd->when = BSC_FD_READ; - bfd->cb = pcu_sock_cb; - bfd->data = state; - - rc = osmo_fd_register(bfd); - if (rc < 0) { - LOGP(DL1IF, LOGL_ERROR, "Could not register PCU fd: %d\n", rc); - close(bfd->fd); - talloc_free(state); - return rc; - } - - LOGP(DL1IF, LOGL_NOTICE, "PCU-SYSMO socket has been connected\n"); - - pcu_sock_state = state; - - return 0; -} - -void pcu_l1if_close(void) -{ - struct pcu_sock_state *state = pcu_sock_state; - struct osmo_fd *bfd; - - if (!state) - return; - - if (osmo_timer_pending(&state->timer)) - osmo_timer_del(&state->timer); - - bfd = &state->conn_bfd; - if (bfd->fd > 0) - pcu_sock_close(state); - talloc_free(state); - pcu_sock_state = NULL; -} - -static void pcu_sock_timeout(void *_priv) -{ - pcu_l1if_open(); -} - - - - diff --git a/src/sysmo_sock.cpp b/src/sysmo_sock.cpp new file mode 100644 index 00000000..8d83ca20 --- /dev/null +++ b/src/sysmo_sock.cpp @@ -0,0 +1,303 @@ +/* sysmo_sock.cpp + * + * Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu> + * + * 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 <stdio.h> +#include <unistd.h> +#include <stdlib.h> +#include <string.h> +#include <errno.h> +#include <assert.h> +#include <sys/socket.h> +#include <sys/un.h> +extern "C" { +#include <osmocom/core/talloc.h> +#include <osmocom/core/select.h> +#include <osmocom/core/msgb.h> +} + +#include <gprs_rlcmac.h> +#include <pcu_l1_if.h> +#include <gprs_debug.h> +#include <gprs_bssgp_pcu.h> +#include <pcuif_proto.h> + + +/* + * SYSMO-PCU socket functions + */ + +struct pcu_sock_state { + struct osmo_fd conn_bfd; /* fd for connection to lcr */ + struct osmo_timer_list timer; /* socket connect retry timer */ + struct llist_head upqueue; /* queue for sending messages */ +} *pcu_sock_state = NULL; + +static void pcu_sock_timeout(void *_priv); + +int pcu_sock_send(struct msgb *msg) +{ + struct pcu_sock_state *state = pcu_sock_state; + struct osmo_fd *conn_bfd; + + if (!state) { + LOGP(DL1IF, LOGL_NOTICE, "PCU socket not created, dropping " + "message\n"); + return -EINVAL; + } + conn_bfd = &state->conn_bfd; + if (conn_bfd->fd <= 0) { + LOGP(DL1IF, LOGL_NOTICE, "PCU socket not connected, dropping " + "message\n"); + return -EIO; + } + msgb_enqueue(&state->upqueue, msg); + conn_bfd->when |= BSC_FD_WRITE; + + return 0; +} + +static void pcu_sock_close(struct pcu_sock_state *state) +{ + struct osmo_fd *bfd = &state->conn_bfd; + struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts; + struct gprs_rlcmac_tbf *tbf; + uint8_t trx, ts, tfi; + + LOGP(DL1IF, LOGL_NOTICE, "PCU socket has LOST connection\n"); + + close(bfd->fd); + bfd->fd = -1; + osmo_fd_unregister(bfd); + + /* flush the queue */ + while (!llist_empty(&state->upqueue)) { + struct msgb *msg = msgb_dequeue(&state->upqueue); + msgb_free(msg); + } + + /* disable all slots, kick all TBFs */ + for (trx = 0; trx < 8; trx++) { + for (ts = 0; ts < 8; ts++) { + bts->trx[trx].pdch[ts].enable = 0; + for (tfi = 0; tfi < 32; tfi++) { + tbf = bts->trx[trx].pdch[ts].tbf[tfi]; + if (tbf) + tbf_free(tbf); + } + } + } + + gprs_bssgp_destroy(); + + state->timer.cb = pcu_sock_timeout; + osmo_timer_schedule(&state->timer, 5, 0); +} + +static int pcu_sock_read(struct osmo_fd *bfd) +{ + struct pcu_sock_state *state = (struct pcu_sock_state *)bfd->data; + struct gsm_pcu_if *pcu_prim; + struct msgb *msg; + int rc; + + msg = msgb_alloc(sizeof(*pcu_prim), "pcu_sock_rx"); + if (!msg) + return -ENOMEM; + + pcu_prim = (struct gsm_pcu_if *) msg->tail; + + rc = recv(bfd->fd, msg->tail, msgb_tailroom(msg), 0); + if (rc == 0) + goto close; + + if (rc < 0) { + if (errno == EAGAIN) + return 0; + goto close; + } + + rc = pcu_rx(pcu_prim->msg_type, pcu_prim); + + /* as we always synchronously process the message in pcu_rx() and + * its callbacks, we can free the message here. */ + msgb_free(msg); + + return rc; + +close: + msgb_free(msg); + pcu_sock_close(state); + return -1; +} + +static int pcu_sock_write(struct osmo_fd *bfd) +{ + struct pcu_sock_state *state = (struct pcu_sock_state *)bfd->data; + int rc; + + while (!llist_empty(&state->upqueue)) { + struct msgb *msg, *msg2; + struct gsm_pcu_if *pcu_prim; + + /* peek at the beginning of the queue */ + msg = llist_entry(state->upqueue.next, struct msgb, list); + pcu_prim = (struct gsm_pcu_if *)msg->data; + + bfd->when &= ~BSC_FD_WRITE; + + /* bug hunter 8-): maybe someone forgot msgb_put(...) ? */ + if (!msgb_length(msg)) { + LOGP(DL1IF, LOGL_ERROR, "message type (%d) with ZERO " + "bytes!\n", pcu_prim->msg_type); + goto dontsend; + } + + /* try to send it over the socket */ + rc = write(bfd->fd, msgb_data(msg), msgb_length(msg)); + if (rc == 0) + goto close; + if (rc < 0) { + if (errno == EAGAIN) { + bfd->when |= BSC_FD_WRITE; + break; + } + goto close; + } + +dontsend: + /* _after_ we send it, we can deueue */ + msg2 = msgb_dequeue(&state->upqueue); + assert(msg == msg2); + msgb_free(msg); + } + return 0; + +close: + pcu_sock_close(state); + + return -1; +} + +static int pcu_sock_cb(struct osmo_fd *bfd, unsigned int flags) +{ + int rc = 0; + + if (flags & BSC_FD_READ) + rc = pcu_sock_read(bfd); + if (rc < 0) + return rc; + + if (flags & BSC_FD_WRITE) + rc = pcu_sock_write(bfd); + + return rc; +} + +int pcu_l1if_open(void) +{ + struct pcu_sock_state *state; + struct osmo_fd *bfd; + struct sockaddr_un local; + unsigned int namelen; + int rc; + + state = pcu_sock_state; + if (!state) { + state = talloc_zero(NULL, struct pcu_sock_state); + if (!state) + return -ENOMEM; + INIT_LLIST_HEAD(&state->upqueue); + } + + bfd = &state->conn_bfd; + + bfd->fd = socket(AF_UNIX, SOCK_SEQPACKET, 0); + if (bfd->fd < 0) { + LOGP(DL1IF, LOGL_ERROR, "Failed to create PCU-SYSMO socket.\n"); + talloc_free(state); + return -1; + } + + local.sun_family = AF_UNIX; + strncpy(local.sun_path, "/tmp/pcu_bts", sizeof(local.sun_path)); + local.sun_path[sizeof(local.sun_path) - 1] = '\0'; + + /* we use the same magic that X11 uses in Xtranssock.c for + * calculating the proper length of the sockaddr */ +#if defined(BSD44SOCKETS) || defined(__UNIXWARE__) + local.sun_len = strlen(local.sun_path); +#endif +#if defined(BSD44SOCKETS) || defined(SUN_LEN) + namelen = SUN_LEN(&local); +#else + namelen = strlen(local.sun_path) + + offsetof(struct sockaddr_un, sun_path); +#endif + rc = connect(bfd->fd, (struct sockaddr *) &local, namelen); + if (rc != 0) { + LOGP(DL1IF, LOGL_ERROR, "Failed to Connect the PCU-SYSMO " + "socket, delaying... '%s'\n", local.sun_path); + close(bfd->fd); + bfd->fd = -1; + state->timer.cb = pcu_sock_timeout; + osmo_timer_schedule(&state->timer, 5, 0); + return 0; + } + + bfd->when = BSC_FD_READ; + bfd->cb = pcu_sock_cb; + bfd->data = state; + + rc = osmo_fd_register(bfd); + if (rc < 0) { + LOGP(DL1IF, LOGL_ERROR, "Could not register PCU fd: %d\n", rc); + close(bfd->fd); + talloc_free(state); + return rc; + } + + LOGP(DL1IF, LOGL_NOTICE, "PCU-SYSMO socket has been connected\n"); + + pcu_sock_state = state; + + return 0; +} + +void pcu_l1if_close(void) +{ + struct pcu_sock_state *state = pcu_sock_state; + struct osmo_fd *bfd; + + if (!state) + return; + + if (osmo_timer_pending(&state->timer)) + osmo_timer_del(&state->timer); + + bfd = &state->conn_bfd; + if (bfd->fd > 0) + pcu_sock_close(state); + talloc_free(state); + pcu_sock_state = NULL; +} + +static void pcu_sock_timeout(void *_priv) +{ + pcu_l1if_open(); +} |