Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 1 | /* gprs_bssgp_pcu.cpp |
| 2 | * |
| 3 | * Copyright (C) 2012 Ivan Klyuchnikov |
Holger Hans Peter Freyther | 416ce69 | 2013-08-22 08:44:04 +0200 | [diff] [blame] | 4 | * Copyright (C) 2013 by Holger Hans Peter Freyther |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version 2 |
| 9 | * of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 19 | */ |
| 20 | |
| 21 | #include <gprs_rlcmac.h> |
| 22 | #include <gprs_bssgp_pcu.h> |
| 23 | #include <pcu_l1_if.h> |
Max | 1187a77 | 2018-01-26 13:31:42 +0100 | [diff] [blame] | 24 | #include <gprs_debug.h> |
Holger Hans Peter Freyther | 67ed34e | 2013-10-17 17:01:54 +0200 | [diff] [blame] | 25 | #include <bts.h> |
Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 26 | #include <tbf.h> |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 27 | #include <coding_scheme.h> |
Max | 6dc90b8 | 2018-02-19 17:17:28 +0100 | [diff] [blame] | 28 | #include <pdch.h> |
Pau Espin Pedrol | de7bb75 | 2020-01-23 12:37:15 +0100 | [diff] [blame] | 29 | #include <decoding.h> |
Max | 136ebcc | 2019-03-05 14:59:03 +0100 | [diff] [blame] | 30 | |
| 31 | extern "C" { |
Vadim Yanitskiy | 6170ac0 | 2019-07-24 16:44:13 +0700 | [diff] [blame] | 32 | #include <osmocom/gsm/protocol/gsm_23_003.h> |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 33 | #include <osmocom/gprs/protocol/gsm_08_16.h> |
Max | 136ebcc | 2019-03-05 14:59:03 +0100 | [diff] [blame] | 34 | #include <osmocom/core/utils.h> |
| 35 | #include "coding_scheme.h" |
| 36 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 37 | |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 38 | /* Tuning parameters for BSSGP flow control */ |
| 39 | #define FC_DEFAULT_LIFE_TIME_SECS 10 /* experimental value, 10s */ |
| 40 | #define FC_MS_BUCKET_SIZE_BY_BMAX(bmax) ((bmax) / 2 + 500) /* experimental */ |
| 41 | #define FC_FALLBACK_BVC_BUCKET_SIZE 2000 /* e.g. on R = 0, value taken from PCAP files */ |
| 42 | #define FC_MS_MAX_RX_SLOTS 4 /* limit MS default R to 4 TS per MS */ |
| 43 | |
| 44 | /* Constants for BSSGP flow control */ |
| 45 | #define FC_MAX_BUCKET_LEAK_RATE (6553500 / 8) /* Byte/s */ |
| 46 | #define FC_MAX_BUCKET_SIZE 6553500 /* Octets */ |
| 47 | |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 48 | static struct gprs_bssgp_pcu the_pcu = { 0, }; |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 49 | |
Andreas Eversberg | 71cce91 | 2013-01-16 13:49:00 +0100 | [diff] [blame] | 50 | extern void *tall_pcu_ctx; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 51 | extern uint16_t spoof_mcc, spoof_mnc; |
Neels Hofmeyr | bdc55fa | 2018-02-21 00:39:07 +0100 | [diff] [blame] | 52 | extern bool spoof_mnc_3_digits; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 53 | |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 54 | static void bvc_timeout(void *_priv); |
| 55 | |
Jacob Erlbeck | 4a07a3b | 2016-01-20 12:22:07 +0100 | [diff] [blame] | 56 | static int parse_ra_cap(struct tlv_parsed *tp, MS_Radio_Access_capability_t *rac) |
Holger Hans Peter Freyther | 98fe945 | 2013-07-13 15:23:58 +0200 | [diff] [blame] | 57 | { |
| 58 | bitvec *block; |
Holger Hans Peter Freyther | 98fe945 | 2013-07-13 15:23:58 +0200 | [diff] [blame] | 59 | uint8_t cap_len; |
| 60 | uint8_t *cap; |
| 61 | |
Jacob Erlbeck | 4a07a3b | 2016-01-20 12:22:07 +0100 | [diff] [blame] | 62 | memset(rac, 0, sizeof(*rac)); |
| 63 | |
Holger Hans Peter Freyther | 98fe945 | 2013-07-13 15:23:58 +0200 | [diff] [blame] | 64 | if (!TLVP_PRESENT(tp, BSSGP_IE_MS_RADIO_ACCESS_CAP)) |
Jacob Erlbeck | 4a07a3b | 2016-01-20 12:22:07 +0100 | [diff] [blame] | 65 | return -EINVAL; |
Holger Hans Peter Freyther | 98fe945 | 2013-07-13 15:23:58 +0200 | [diff] [blame] | 66 | |
| 67 | cap_len = TLVP_LEN(tp, BSSGP_IE_MS_RADIO_ACCESS_CAP); |
| 68 | cap = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_MS_RADIO_ACCESS_CAP); |
| 69 | |
Jacob Erlbeck | 4a07a3b | 2016-01-20 12:22:07 +0100 | [diff] [blame] | 70 | LOGP(DBSSGP, LOGL_DEBUG, "Got BSSGP RA Capability of size %d\n", cap_len); |
| 71 | |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 72 | block = bitvec_alloc(cap_len, tall_pcu_ctx); |
Holger Hans Peter Freyther | 98fe945 | 2013-07-13 15:23:58 +0200 | [diff] [blame] | 73 | bitvec_unpack(block, cap); |
Jacob Erlbeck | 4a07a3b | 2016-01-20 12:22:07 +0100 | [diff] [blame] | 74 | |
| 75 | /* TS 24.008, 10.5.5.12a */ |
| 76 | decode_gsm_ra_cap(block, rac); |
Holger Hans Peter Freyther | 98fe945 | 2013-07-13 15:23:58 +0200 | [diff] [blame] | 77 | |
| 78 | bitvec_free(block); |
Jacob Erlbeck | 4a07a3b | 2016-01-20 12:22:07 +0100 | [diff] [blame] | 79 | return 0; |
Holger Hans Peter Freyther | 98fe945 | 2013-07-13 15:23:58 +0200 | [diff] [blame] | 80 | } |
| 81 | |
Holger Hans Peter Freyther | 90d5df4 | 2013-07-28 21:14:15 +0200 | [diff] [blame] | 82 | static int gprs_bssgp_pcu_rx_dl_ud(struct msgb *msg, struct tlv_parsed *tp) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 83 | { |
| 84 | struct bssgp_ud_hdr *budh; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 85 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 86 | uint32_t tlli; |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 87 | uint32_t tlli_old = 0; |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 88 | uint8_t *data; |
| 89 | uint16_t len; |
Jacob Erlbeck | 4a07a3b | 2016-01-20 12:22:07 +0100 | [diff] [blame] | 90 | uint8_t ms_class = 0; |
| 91 | uint8_t egprs_ms_class = 0; |
Vadim Yanitskiy | 6170ac0 | 2019-07-24 16:44:13 +0700 | [diff] [blame] | 92 | int rc; |
Jacob Erlbeck | 4a07a3b | 2016-01-20 12:22:07 +0100 | [diff] [blame] | 93 | MS_Radio_Access_capability_t rac; |
Neels Hofmeyr | 0052051 | 2020-08-21 15:44:58 +0200 | [diff] [blame] | 94 | /* TODO: is it really necessary to initialize this as a "000" IMSI? It seems, the function should just return an |
| 95 | * error if no IMSI IE was found. */ |
| 96 | struct osmo_mobile_identity mi_imsi = { |
| 97 | .type = GSM_MI_TYPE_TMSI, |
| 98 | }; |
| 99 | OSMO_STRLCPY_ARRAY(mi_imsi.imsi, "000"); |
Andreas Eversberg | 7d7cf54 | 2012-06-25 09:26:15 +0200 | [diff] [blame] | 100 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 101 | budh = (struct bssgp_ud_hdr *)msgb_bssgph(msg); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 102 | tlli = ntohl(budh->tlli); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 103 | |
Ivan Kluchnikov | 5e0df93 | 2012-06-12 15:33:52 +0400 | [diff] [blame] | 104 | /* LLC_PDU is mandatory IE */ |
| 105 | if (!TLVP_PRESENT(tp, BSSGP_IE_LLC_PDU)) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 106 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 107 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP TLLI=0x%08x Rx UL-UD missing mandatory IE\n", tlli); |
Ivan Kluchnikov | 5e0df93 | 2012-06-12 15:33:52 +0400 | [diff] [blame] | 108 | return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg); |
| 109 | } |
Ivan Kluchnikov | b172b1b | 2012-06-07 01:51:49 +0400 | [diff] [blame] | 110 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 111 | data = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_LLC_PDU); |
| 112 | len = TLVP_LEN(tp, BSSGP_IE_LLC_PDU); |
Vadim Yanitskiy | 3568fcf | 2020-02-03 16:38:51 +0700 | [diff] [blame] | 113 | if (len > LLC_MAX_LEN) |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 114 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 115 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP TLLI=0x%08x Rx UL-UD IE_LLC_PDU too large\n", tlli); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 116 | return bssgp_tx_status(BSSGP_CAUSE_COND_IE_ERR, NULL, msg); |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 117 | } |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 118 | |
Andreas Eversberg | e13fa2d | 2012-07-09 17:10:44 +0200 | [diff] [blame] | 119 | /* read IMSI. if no IMSI exists, use first paging block (any paging), |
| 120 | * because during attachment the IMSI might not be known, so the MS |
| 121 | * will listen to all paging blocks. */ |
Vadim Yanitskiy | aad87b6 | 2019-07-24 16:36:45 +0700 | [diff] [blame] | 122 | if (TLVP_PRESENT(tp, BSSGP_IE_IMSI)) |
| 123 | { |
Neels Hofmeyr | 0052051 | 2020-08-21 15:44:58 +0200 | [diff] [blame] | 124 | rc = osmo_mobile_identity_decode(&mi_imsi, TLVP_VAL(tp, BSSGP_IE_IMSI), TLVP_LEN(tp, BSSGP_IE_IMSI), |
| 125 | true); |
Pau Espin Pedrol | 1d68cdf | 2020-08-26 13:41:45 +0200 | [diff] [blame] | 126 | if (rc < 0 || mi_imsi.type != GSM_MI_TYPE_IMSI) { |
Vadim Yanitskiy | 6170ac0 | 2019-07-24 16:44:13 +0700 | [diff] [blame] | 127 | LOGP(DBSSGP, LOGL_NOTICE, "Failed to parse IMSI IE (rc=%d)\n", rc); |
| 128 | return bssgp_tx_status(BSSGP_CAUSE_COND_IE_ERR, NULL, msg); |
| 129 | } |
Vadim Yanitskiy | aad87b6 | 2019-07-24 16:36:45 +0700 | [diff] [blame] | 130 | } |
Andreas Eversberg | 51ab134 | 2012-07-13 14:52:50 +0200 | [diff] [blame] | 131 | |
| 132 | /* parse ms radio access capability */ |
Jacob Erlbeck | 4a07a3b | 2016-01-20 12:22:07 +0100 | [diff] [blame] | 133 | if (parse_ra_cap(tp, &rac) >= 0) { |
| 134 | /* Get the EGPRS class from the RA capability */ |
| 135 | ms_class = Decoding::get_ms_class_by_capability(&rac); |
| 136 | egprs_ms_class = |
| 137 | Decoding::get_egprs_ms_class_by_capability(&rac); |
| 138 | LOGP(DBSSGP, LOGL_DEBUG, "Got downlink MS class %d/%d\n", |
| 139 | ms_class, egprs_ms_class); |
| 140 | } |
Andreas Eversberg | 51ab134 | 2012-07-13 14:52:50 +0200 | [diff] [blame] | 141 | |
Andreas Eversberg | 24131bf | 2012-07-21 11:09:58 +0200 | [diff] [blame] | 142 | /* get lifetime */ |
| 143 | uint16_t delay_csec = 0xffff; |
| 144 | if (TLVP_PRESENT(tp, BSSGP_IE_PDU_LIFETIME)) |
| 145 | { |
| 146 | uint8_t lt_len = TLVP_LEN(tp, BSSGP_IE_PDU_LIFETIME); |
Andreas Eversberg | 24131bf | 2012-07-21 11:09:58 +0200 | [diff] [blame] | 147 | if (lt_len == 2) |
Harald Welte | 49b7822 | 2017-06-11 11:27:59 +0200 | [diff] [blame] | 148 | delay_csec = tlvp_val16be(tp, BSSGP_IE_PDU_LIFETIME); |
Andreas Eversberg | 24131bf | 2012-07-21 11:09:58 +0200 | [diff] [blame] | 149 | else |
| 150 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP invalid length of " |
| 151 | "PDU_LIFETIME IE\n"); |
| 152 | } else |
| 153 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP missing mandatory " |
| 154 | "PDU_LIFETIME IE\n"); |
| 155 | |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 156 | /* get optional TLLI old */ |
| 157 | if (TLVP_PRESENT(tp, BSSGP_IE_TLLI)) |
| 158 | { |
| 159 | uint8_t tlli_len = TLVP_LEN(tp, BSSGP_IE_PDU_LIFETIME); |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 160 | if (tlli_len == 2) |
Harald Welte | 49b7822 | 2017-06-11 11:27:59 +0200 | [diff] [blame] | 161 | tlli_old = tlvp_val16be(tp, BSSGP_IE_TLLI); |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 162 | else |
| 163 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP invalid length of " |
| 164 | "TLLI (old) IE\n"); |
| 165 | } |
| 166 | |
Neels Hofmeyr | 0052051 | 2020-08-21 15:44:58 +0200 | [diff] [blame] | 167 | LOGP(DBSSGP, LOGL_INFO, "LLC [SGSN -> PCU] = TLLI: 0x%08x IMSI: %s len: %d\n", tlli, mi_imsi.imsi, len); |
Ivan Kluchnikov | 5e0df93 | 2012-06-12 15:33:52 +0400 | [diff] [blame] | 168 | |
Neels Hofmeyr | 0052051 | 2020-08-21 15:44:58 +0200 | [diff] [blame] | 169 | return gprs_rlcmac_dl_tbf::handle(the_pcu.bts, tlli, tlli_old, mi_imsi.imsi, |
Jacob Erlbeck | 14e00f8 | 2015-11-27 18:10:39 +0100 | [diff] [blame] | 170 | ms_class, egprs_ms_class, delay_csec, data, len); |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 171 | } |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 172 | |
Vadim Yanitskiy | 0b25f69 | 2020-03-26 03:38:05 +0700 | [diff] [blame] | 173 | /* Returns 0 on success, suggested BSSGP cause otherwise */ |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 174 | static unsigned int get_paging_mi(struct osmo_mobile_identity *mi, const struct tlv_parsed *tp) |
Vadim Yanitskiy | 0b25f69 | 2020-03-26 03:38:05 +0700 | [diff] [blame] | 175 | { |
Vadim Yanitskiy | 0b25f69 | 2020-03-26 03:38:05 +0700 | [diff] [blame] | 176 | /* Use TMSI (if present) or IMSI */ |
| 177 | if (TLVP_PRESENT(tp, BSSGP_IE_TMSI)) { |
| 178 | /* Be safe against an evil SGSN - check the length */ |
| 179 | if (TLVP_LEN(tp, BSSGP_IE_TMSI) != GSM23003_TMSI_NUM_BYTES) { |
| 180 | LOGP(DBSSGP, LOGL_NOTICE, "TMSI IE has odd length (!= 4)\n"); |
| 181 | return BSSGP_CAUSE_COND_IE_ERR; |
| 182 | } |
| 183 | |
| 184 | /* NOTE: TMSI (unlike IMSI) IE comes without MI type header */ |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 185 | *mi = (struct osmo_mobile_identity){ |
| 186 | .type = GSM_MI_TYPE_TMSI, |
| 187 | }; |
| 188 | mi->tmsi = osmo_load32be(TLVP_VAL(tp, BSSGP_IE_TMSI)); |
Vadim Yanitskiy | 0b25f69 | 2020-03-26 03:38:05 +0700 | [diff] [blame] | 189 | } else if (TLVP_PRESENT(tp, BSSGP_IE_IMSI)) { |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 190 | int rc = osmo_mobile_identity_decode(mi, TLVP_VAL(tp, BSSGP_IE_IMSI), TLVP_LEN(tp, BSSGP_IE_IMSI), |
| 191 | true); |
| 192 | if (rc < 0 || mi->type != GSM_MI_TYPE_IMSI) { |
| 193 | LOGP(DBSSGP, LOGL_ERROR, "Invalid IMSI Mobile Identity\n"); |
| 194 | return BSSGP_CAUSE_COND_IE_ERR; |
| 195 | } |
Vadim Yanitskiy | 0b25f69 | 2020-03-26 03:38:05 +0700 | [diff] [blame] | 196 | } else { |
| 197 | LOGP(DBSSGP, LOGL_ERROR, "Neither TMSI IE nor IMSI IE is present\n"); |
| 198 | return BSSGP_CAUSE_MISSING_COND_IE; |
| 199 | } |
| 200 | |
| 201 | return 0; |
| 202 | } |
| 203 | |
Pau Espin Pedrol | 65a0d1d | 2019-12-10 19:29:22 +0100 | [diff] [blame] | 204 | static int gprs_bssgp_pcu_rx_paging_cs(struct msgb *msg, struct tlv_parsed *tp) |
| 205 | { |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 206 | struct osmo_mobile_identity mi; |
Vadim Yanitskiy | 0b25f69 | 2020-03-26 03:38:05 +0700 | [diff] [blame] | 207 | int rc; |
Pau Espin Pedrol | 65a0d1d | 2019-12-10 19:29:22 +0100 | [diff] [blame] | 208 | uint8_t *chan_needed = (uint8_t *)TLVP_VAL(tp, BSSGP_IE_CHAN_NEEDED); |
| 209 | |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 210 | if ((rc = get_paging_mi(&mi, tp)) > 0) |
Vadim Yanitskiy | 0b25f69 | 2020-03-26 03:38:05 +0700 | [diff] [blame] | 211 | return bssgp_tx_status((enum gprs_bssgp_cause) rc, NULL, msg); |
Pau Espin Pedrol | 65a0d1d | 2019-12-10 19:29:22 +0100 | [diff] [blame] | 212 | |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 213 | return BTS::main_bts()->add_paging(chan_needed ? *chan_needed : 0, &mi); |
Pau Espin Pedrol | 65a0d1d | 2019-12-10 19:29:22 +0100 | [diff] [blame] | 214 | } |
| 215 | |
Pau Espin Pedrol | 3f064f5 | 2019-12-10 17:09:51 +0100 | [diff] [blame] | 216 | static int gprs_bssgp_pcu_rx_paging_ps(struct msgb *msg, struct tlv_parsed *tp) |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 217 | { |
Neels Hofmeyr | 0052051 | 2020-08-21 15:44:58 +0200 | [diff] [blame] | 218 | struct osmo_mobile_identity mi_imsi; |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 219 | struct osmo_mobile_identity paging_mi; |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 220 | uint16_t pgroup; |
Vadim Yanitskiy | 6170ac0 | 2019-07-24 16:44:13 +0700 | [diff] [blame] | 221 | int rc; |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 222 | |
Max | f3038e7 | 2019-03-19 15:39:05 +0100 | [diff] [blame] | 223 | if (!TLVP_PRESENT(tp, BSSGP_IE_IMSI)) { |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 224 | LOGP(DBSSGP, LOGL_ERROR, "No IMSI\n"); |
Pau Espin Pedrol | 5530f12 | 2019-12-10 19:26:27 +0100 | [diff] [blame] | 225 | return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg); |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 226 | } |
| 227 | |
Neels Hofmeyr | 0052051 | 2020-08-21 15:44:58 +0200 | [diff] [blame] | 228 | rc = osmo_mobile_identity_decode(&mi_imsi, TLVP_VAL(tp, BSSGP_IE_IMSI), TLVP_LEN(tp, BSSGP_IE_IMSI), true); |
| 229 | if (rc < 0 || mi_imsi.type != GSM_MI_TYPE_IMSI) { |
Vadim Yanitskiy | 6170ac0 | 2019-07-24 16:44:13 +0700 | [diff] [blame] | 230 | LOGP(DBSSGP, LOGL_NOTICE, "Failed to parse IMSI IE (rc=%d)\n", rc); |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 231 | return bssgp_tx_status(BSSGP_CAUSE_INV_MAND_INF, NULL, msg); |
| 232 | } |
Neels Hofmeyr | 0052051 | 2020-08-21 15:44:58 +0200 | [diff] [blame] | 233 | pgroup = imsi2paging_group(mi_imsi.imsi); |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 234 | if (pgroup > 999) { |
Neels Hofmeyr | 0052051 | 2020-08-21 15:44:58 +0200 | [diff] [blame] | 235 | LOGP(DBSSGP, LOGL_NOTICE, "Failed to compute IMSI %s paging group\n", mi_imsi.imsi); |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 236 | return bssgp_tx_status(BSSGP_CAUSE_INV_MAND_INF, NULL, msg); |
Vadim Yanitskiy | 6170ac0 | 2019-07-24 16:44:13 +0700 | [diff] [blame] | 237 | } |
Max | f3038e7 | 2019-03-19 15:39:05 +0100 | [diff] [blame] | 238 | |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 239 | if ((rc = get_paging_mi(&paging_mi, tp)) > 0) |
Vadim Yanitskiy | 0b25f69 | 2020-03-26 03:38:05 +0700 | [diff] [blame] | 240 | return bssgp_tx_status((enum gprs_bssgp_cause) rc, NULL, msg); |
Pau Espin Pedrol | 5530f12 | 2019-12-10 19:26:27 +0100 | [diff] [blame] | 241 | |
Neels Hofmeyr | 59fc0bd | 2020-08-21 16:21:23 +0200 | [diff] [blame] | 242 | return gprs_rlcmac_paging_request(&paging_mi, pgroup); |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 243 | } |
| 244 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 245 | /* Receive a BSSGP PDU from a BSS on a PTP BVCI */ |
Holger Hans Peter Freyther | 90d5df4 | 2013-07-28 21:14:15 +0200 | [diff] [blame] | 246 | static int gprs_bssgp_pcu_rx_ptp(struct msgb *msg, struct tlv_parsed *tp, struct bssgp_bvc_ctx *bctx) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 247 | { |
| 248 | struct bssgp_normal_hdr *bgph = (struct bssgp_normal_hdr *) msgb_bssgph(msg); |
Max | a49475b | 2017-05-23 17:53:38 +0200 | [diff] [blame] | 249 | enum bssgp_pdu_type pdu_type = (enum bssgp_pdu_type) bgph->pdu_type; |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 250 | int bvci = bctx ? bctx->bvci : -1; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 251 | unsigned rc = 0; |
| 252 | |
Andreas Eversberg | ba1cd9b | 2012-07-25 09:14:09 +0200 | [diff] [blame] | 253 | if (!bctx) |
| 254 | return -EINVAL; |
| 255 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 256 | /* If traffic is received on a BVC that is marked as blocked, the |
| 257 | * received PDU shall not be accepted and a STATUS PDU (Cause value: |
| 258 | * BVC Blocked) shall be sent to the peer entity on the signalling BVC */ |
| 259 | if (bctx->state & BVC_S_BLOCKED && pdu_type != BSSGP_PDUT_STATUS) |
| 260 | { |
| 261 | uint16_t bvci = msgb_bvci(msg); |
| 262 | LOGP(DBSSGP, LOGL_NOTICE, "rx BVC_S_BLOCKED\n"); |
| 263 | return bssgp_tx_status(BSSGP_CAUSE_BVCI_BLOCKED, &bvci, msg); |
| 264 | } |
| 265 | |
| 266 | switch (pdu_type) { |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 267 | case BSSGP_PDUT_STATUS: |
| 268 | /* already handled in libosmogb */ |
| 269 | OSMO_ASSERT(0); |
| 270 | break; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 271 | case BSSGP_PDUT_DL_UNITDATA: |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 272 | LOGP(DBSSGP, LOGL_DEBUG, "Rx BSSGP BVCI=%d (PTP) DL_UNITDATA\n", bvci); |
Holger Hans Peter Freyther | 416ce69 | 2013-08-22 08:44:04 +0200 | [diff] [blame] | 273 | if (the_pcu.on_dl_unit_data) |
| 274 | the_pcu.on_dl_unit_data(&the_pcu, msg, tp); |
Ivan Kluchnikov | 5e0df93 | 2012-06-12 15:33:52 +0400 | [diff] [blame] | 275 | gprs_bssgp_pcu_rx_dl_ud(msg, tp); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 276 | break; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 277 | case BSSGP_PDUT_FLOW_CONTROL_BVC_ACK: |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 278 | case BSSGP_PDUT_FLOW_CONTROL_MS_ACK: |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 279 | LOGP(DBSSGP, LOGL_DEBUG, "Rx BSSGP BVCI=%d (PTP) %s\n", |
| 280 | bvci, bssgp_pdu_str(pdu_type)); |
| 281 | break; |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 282 | case BSSGP_PDUT_PAGING_CS: |
Pau Espin Pedrol | 771de1f | 2019-12-10 19:31:25 +0100 | [diff] [blame] | 283 | gprs_bssgp_pcu_rx_paging_cs(msg, tp); |
| 284 | break; |
| 285 | case BSSGP_PDUT_PAGING_PS: |
| 286 | gprs_bssgp_pcu_rx_paging_ps(msg, tp); |
| 287 | break; |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 288 | case BSSGP_PDUT_RA_CAPABILITY: |
| 289 | case BSSGP_PDUT_RA_CAPA_UPDATE_ACK: |
| 290 | LOGP(DBSSGP, LOGL_INFO, "Rx BSSGP BVCI=%d (PTP) PDU type %s not implemented\n", |
| 291 | bvci, bssgp_pdu_str(pdu_type)); |
| 292 | break; |
| 293 | /* See TS 08.18 5.4.1 */ |
| 294 | case BSSGP_PDUT_SUSPEND: |
| 295 | case BSSGP_PDUT_SUSPEND_ACK: |
| 296 | case BSSGP_PDUT_SUSPEND_NACK: |
| 297 | case BSSGP_PDUT_RESUME: |
| 298 | case BSSGP_PDUT_RESUME_ACK: |
| 299 | case BSSGP_PDUT_RESUME_NACK: |
| 300 | case BSSGP_PDUT_FLUSH_LL: |
| 301 | case BSSGP_PDUT_FLUSH_LL_ACK: |
| 302 | case BSSGP_PDUT_LLC_DISCARD: |
| 303 | case BSSGP_PDUT_BVC_BLOCK: |
| 304 | case BSSGP_PDUT_BVC_BLOCK_ACK: |
| 305 | case BSSGP_PDUT_BVC_UNBLOCK: |
| 306 | case BSSGP_PDUT_BVC_UNBLOCK_ACK: |
| 307 | case BSSGP_PDUT_BVC_RESET: |
| 308 | case BSSGP_PDUT_BVC_RESET_ACK: |
| 309 | case BSSGP_PDUT_SGSN_INVOKE_TRACE: |
| 310 | LOGP(DBSSGP, LOGL_NOTICE, "Rx BSSGP BVCI=%u (PTP) PDU type %s unexpected at PTP\n", |
| 311 | bctx->bvci, bssgp_pdu_str(pdu_type)); |
| 312 | rc = bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 313 | break; |
| 314 | default: |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 315 | LOGP(DBSSGP, LOGL_NOTICE, "Rx BSSGP BVCI=%u (PTP) PDU type %s unknown\n", |
Harald Welte | 356ac61 | 2017-05-25 19:05:32 +0200 | [diff] [blame] | 316 | bctx->bvci, bssgp_pdu_str(pdu_type)); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 317 | rc = bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg); |
| 318 | break; |
| 319 | } |
| 320 | return rc; |
| 321 | } |
| 322 | |
| 323 | /* Receive a BSSGP PDU from a SGSN on a SIGNALLING BVCI */ |
Holger Hans Peter Freyther | 90d5df4 | 2013-07-28 21:14:15 +0200 | [diff] [blame] | 324 | static int gprs_bssgp_pcu_rx_sign(struct msgb *msg, struct tlv_parsed *tp, struct bssgp_bvc_ctx *bctx) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 325 | { |
| 326 | struct bssgp_normal_hdr *bgph = (struct bssgp_normal_hdr *) msgb_bssgph(msg); |
Max | a49475b | 2017-05-23 17:53:38 +0200 | [diff] [blame] | 327 | enum bssgp_pdu_type pdu_type = (enum bssgp_pdu_type) bgph->pdu_type; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 328 | int rc = 0; |
Vadim Yanitskiy | ce27d1e | 2019-11-08 04:18:46 +0700 | [diff] [blame] | 329 | int bvci = bctx ? bctx->bvci : msgb_bvci(msg); |
Max | a49475b | 2017-05-23 17:53:38 +0200 | [diff] [blame] | 330 | switch (pdu_type) { |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 331 | case BSSGP_PDUT_STATUS: |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 332 | /* already handled in libosmogb */ |
| 333 | OSMO_ASSERT(0); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 334 | break; |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 335 | case BSSGP_PDUT_SUSPEND_ACK: |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 336 | case BSSGP_PDUT_RESUME_ACK: |
| 337 | case BSSGP_PDUT_BVC_BLOCK_ACK: |
| 338 | LOGP(DBSSGP, LOGL_DEBUG, "Rx BSSGP BVCI=%d (SIGN) %s\n", |
| 339 | bvci, bssgp_pdu_str(pdu_type)); |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 340 | break; |
| 341 | case BSSGP_PDUT_BVC_RESET_ACK: |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 342 | LOGP(DBSSGP, LOGL_NOTICE, "Rx BSSGP BVCI=%d (SIGN) BVC_RESET_ACK\n", bvci); |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 343 | if (!the_pcu.bvc_sig_reset) |
| 344 | the_pcu.bvc_sig_reset = 1; |
| 345 | else |
| 346 | the_pcu.bvc_reset = 1; |
| 347 | bvc_timeout(NULL); |
| 348 | break; |
Pau Espin Pedrol | 65a0d1d | 2019-12-10 19:29:22 +0100 | [diff] [blame] | 349 | case BSSGP_PDUT_PAGING_CS: |
| 350 | gprs_bssgp_pcu_rx_paging_cs(msg, tp); |
| 351 | break; |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 352 | case BSSGP_PDUT_PAGING_PS: |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 353 | gprs_bssgp_pcu_rx_paging_ps(msg, tp); |
| 354 | break; |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 355 | case BSSGP_PDUT_BVC_UNBLOCK_ACK: |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 356 | LOGP(DBSSGP, LOGL_NOTICE, "Rx BSSGP BVCI=%d (SIGN) BVC_UNBLOCK_ACK\n", bvci); |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 357 | the_pcu.bvc_unblocked = 1; |
Holger Hans Peter Freyther | c0f1644 | 2013-08-22 08:40:33 +0200 | [diff] [blame] | 358 | if (the_pcu.on_unblock_ack) |
| 359 | the_pcu.on_unblock_ack(&the_pcu); |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 360 | bvc_timeout(NULL); |
| 361 | break; |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 362 | case BSSGP_PDUT_SUSPEND_NACK: |
| 363 | case BSSGP_PDUT_RESUME_NACK: |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 364 | case BSSGP_PDUT_FLUSH_LL: |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 365 | case BSSGP_PDUT_SGSN_INVOKE_TRACE: |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 366 | LOGP(DBSSGP, LOGL_INFO, "Rx BSSGP BVCI=%d (SIGN) PDU type %s not implemented\n", |
| 367 | bvci, bssgp_pdu_str(pdu_type)); |
| 368 | break; |
| 369 | /* See TS 08.18 5.4.1 */ |
| 370 | case BSSGP_PDUT_UL_UNITDATA: |
| 371 | case BSSGP_PDUT_DL_UNITDATA: |
| 372 | case BSSGP_PDUT_RA_CAPABILITY: |
| 373 | case BSSGP_PDUT_PTM_UNITDATA: |
| 374 | case BSSGP_PDUT_RA_CAPA_UDPATE: |
| 375 | case BSSGP_PDUT_RA_CAPA_UPDATE_ACK: |
| 376 | case BSSGP_PDUT_RADIO_STATUS: |
| 377 | case BSSGP_PDUT_FLOW_CONTROL_BVC: |
| 378 | case BSSGP_PDUT_FLOW_CONTROL_BVC_ACK: |
| 379 | case BSSGP_PDUT_FLOW_CONTROL_MS: |
| 380 | case BSSGP_PDUT_FLOW_CONTROL_MS_ACK: |
| 381 | case BSSGP_PDUT_DOWNLOAD_BSS_PFC: |
| 382 | case BSSGP_PDUT_CREATE_BSS_PFC: |
| 383 | case BSSGP_PDUT_CREATE_BSS_PFC_ACK: |
| 384 | case BSSGP_PDUT_CREATE_BSS_PFC_NACK: |
| 385 | case BSSGP_PDUT_MODIFY_BSS_PFC: |
| 386 | case BSSGP_PDUT_MODIFY_BSS_PFC_ACK: |
| 387 | case BSSGP_PDUT_DELETE_BSS_PFC: |
| 388 | case BSSGP_PDUT_DELETE_BSS_PFC_ACK: |
| 389 | LOGP(DBSSGP, LOGL_NOTICE, "Rx BSSGP BVCI=%d (SIGN) PDU type %s unexpected at SIGN\n", |
| 390 | bvci, bssgp_pdu_str(pdu_type)); |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 391 | break; |
| 392 | default: |
Harald Welte | 05d7b5d | 2017-07-29 10:16:44 +0200 | [diff] [blame] | 393 | LOGP(DBSSGP, LOGL_NOTICE, "Rx BSSGP BVCI=%d (SIGN) PDU type %s unknown\n", |
Max | a49475b | 2017-05-23 17:53:38 +0200 | [diff] [blame] | 394 | bvci, bssgp_pdu_str(pdu_type)); |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 395 | rc = bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg); |
| 396 | break; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 397 | } |
| 398 | return rc; |
| 399 | } |
| 400 | |
Holger Hans Peter Freyther | 90d5df4 | 2013-07-28 21:14:15 +0200 | [diff] [blame] | 401 | static int gprs_bssgp_pcu_rcvmsg(struct msgb *msg) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 402 | { |
| 403 | struct bssgp_normal_hdr *bgph = (struct bssgp_normal_hdr *) msgb_bssgph(msg); |
| 404 | struct bssgp_ud_hdr *budh = (struct bssgp_ud_hdr *) msgb_bssgph(msg); |
| 405 | struct tlv_parsed tp; |
Max | a49475b | 2017-05-23 17:53:38 +0200 | [diff] [blame] | 406 | enum bssgp_pdu_type pdu_type = (enum bssgp_pdu_type) bgph->pdu_type; |
Max | 2813f93 | 2017-06-27 17:18:40 +0200 | [diff] [blame] | 407 | enum gprs_bssgp_cause cause = BSSGP_CAUSE_OML_INTERV; |
| 408 | uint16_t ns_bvci = msgb_bvci(msg), nsei = msgb_nsei(msg); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 409 | int data_len; |
| 410 | int rc = 0; |
Andreas Eversberg | 3e372d5 | 2012-07-06 09:28:15 +0200 | [diff] [blame] | 411 | struct bssgp_bvc_ctx *bctx; |
| 412 | |
Jacob Erlbeck | 39645b8 | 2015-03-16 12:27:11 +0100 | [diff] [blame] | 413 | if (pdu_type == BSSGP_PDUT_STATUS) |
| 414 | /* Pass the message to the generic BSSGP parser, which handles |
Max | 2813f93 | 2017-06-27 17:18:40 +0200 | [diff] [blame] | 415 | * STATUS and RESET messages in either direction. */ |
Jacob Erlbeck | 39645b8 | 2015-03-16 12:27:11 +0100 | [diff] [blame] | 416 | return bssgp_rcvmsg(msg); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 417 | |
| 418 | /* Identifiers from DOWN: NSEI, BVCI (both in msg->cb) */ |
| 419 | |
| 420 | /* UNITDATA BSSGP headers have TLLI in front */ |
| 421 | if (pdu_type != BSSGP_PDUT_UL_UNITDATA && pdu_type != BSSGP_PDUT_DL_UNITDATA) |
| 422 | { |
| 423 | data_len = msgb_bssgp_len(msg) - sizeof(*bgph); |
| 424 | rc = bssgp_tlv_parse(&tp, bgph->data, data_len); |
| 425 | } |
| 426 | else |
| 427 | { |
| 428 | data_len = msgb_bssgp_len(msg) - sizeof(*budh); |
| 429 | rc = bssgp_tlv_parse(&tp, budh->data, data_len); |
| 430 | } |
Stefan Sperling | 3df1532 | 2018-06-25 12:17:39 +0200 | [diff] [blame] | 431 | if (rc < 0) { |
| 432 | LOGP(DBSSGP, LOGL_ERROR, "Failed to parse BSSGP %s message. Invalid message was: %s\n", |
| 433 | bssgp_pdu_str(pdu_type), msgb_hexdump(msg)); |
Harald Welte | 7b7f204 | 2019-07-21 09:26:20 +0200 | [diff] [blame] | 434 | return bssgp_tx_status(BSSGP_CAUSE_INV_MAND_INF, NULL, msg); |
Stefan Sperling | 3df1532 | 2018-06-25 12:17:39 +0200 | [diff] [blame] | 435 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 436 | |
Max | 2813f93 | 2017-06-27 17:18:40 +0200 | [diff] [blame] | 437 | if (pdu_type == BSSGP_PDUT_BVC_RESET) { |
| 438 | rc = bssgp_rcvmsg(msg); |
| 439 | if (ns_bvci != BVCI_SIGNALLING) |
| 440 | return rc; |
| 441 | |
| 442 | if (TLVP_PRES_LEN(&tp, BSSGP_IE_CAUSE, 1)) |
| 443 | cause = (enum gprs_bssgp_cause)*TLVP_VAL(&tp, BSSGP_IE_CAUSE); |
| 444 | else |
| 445 | LOGP(DBSSGP, LOGL_ERROR, "NSEI=%u BVC RESET without cause?!\n", nsei); |
| 446 | |
| 447 | rc = bssgp_tx_bvc_ptp_reset(nsei, cause); |
| 448 | if (rc < 0) |
| 449 | LOGP(DBSSGP, LOGL_ERROR, "NSEI=%u BVC PTP reset procedure failed: %d\n", nsei, rc); |
| 450 | |
| 451 | return rc; |
| 452 | } |
| 453 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 454 | /* look-up or create the BTS context for this BVC */ |
| 455 | bctx = btsctx_by_bvci_nsei(ns_bvci, msgb_nsei(msg)); |
| 456 | |
Vadim Yanitskiy | ef44414 | 2019-11-08 04:02:31 +0700 | [diff] [blame] | 457 | if (!bctx && ns_bvci != BVCI_SIGNALLING) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 458 | { |
Max | 2813f93 | 2017-06-27 17:18:40 +0200 | [diff] [blame] | 459 | LOGP(DBSSGP, LOGL_NOTICE, "NSEI=%u/BVCI=%u Rejecting PDU type %s for unknown BVCI\n", |
| 460 | nsei, ns_bvci, bssgp_pdu_str(pdu_type)); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 461 | return bssgp_tx_status(BSSGP_CAUSE_UNKNOWN_BVCI, NULL, msg); |
| 462 | } |
| 463 | |
| 464 | if (bctx) |
| 465 | { |
Neels Hofmeyr | a01e2ee | 2017-02-23 18:10:13 +0100 | [diff] [blame] | 466 | log_set_context(LOG_CTX_GB_BVC, bctx); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 467 | rate_ctr_inc(&bctx->ctrg->ctr[BSSGP_CTR_PKTS_IN]); |
| 468 | rate_ctr_add(&bctx->ctrg->ctr[BSSGP_CTR_BYTES_IN], msgb_bssgp_len(msg)); |
| 469 | } |
| 470 | |
| 471 | if (ns_bvci == BVCI_SIGNALLING) |
| 472 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 473 | LOGP(DBSSGP, LOGL_DEBUG, "rx BVCI_SIGNALLING gprs_bssgp_rx_sign\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 474 | rc = gprs_bssgp_pcu_rx_sign(msg, &tp, bctx); |
| 475 | } |
| 476 | else if (ns_bvci == BVCI_PTM) |
| 477 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 478 | LOGP(DBSSGP, LOGL_DEBUG, "rx BVCI_PTM bssgp_tx_status\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 479 | rc = bssgp_tx_status(BSSGP_CAUSE_PDU_INCOMP_FEAT, NULL, msg); |
| 480 | } |
| 481 | else |
| 482 | { |
Pau Espin Pedrol | db12f25 | 2019-12-23 14:27:54 +0100 | [diff] [blame] | 483 | LOGP(DBSSGP, LOGL_DEBUG, "rx BVCI_PTP=%u gprs_bssgp_rx_ptp\n", ns_bvci); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 484 | rc = gprs_bssgp_pcu_rx_ptp(msg, &tp, bctx); |
| 485 | } |
| 486 | return rc; |
| 487 | } |
Harald Welte | 477e79e | 2012-06-18 12:21:03 +0800 | [diff] [blame] | 488 | |
Jacob Erlbeck | 39645b8 | 2015-03-16 12:27:11 +0100 | [diff] [blame] | 489 | static void handle_nm_status(struct osmo_bssgp_prim *bp) |
| 490 | { |
| 491 | enum gprs_bssgp_cause cause; |
| 492 | |
| 493 | LOGP(DPCU, LOGL_DEBUG, |
| 494 | "Got NM-STATUS.ind, BVCI=%d, NSEI=%d\n", |
| 495 | bp->bvci, bp->nsei); |
| 496 | |
| 497 | if (!TLVP_PRESENT(bp->tp, BSSGP_IE_CAUSE)) |
| 498 | return; |
| 499 | |
| 500 | cause = (enum gprs_bssgp_cause)*TLVP_VAL(bp->tp, BSSGP_IE_CAUSE); |
| 501 | |
| 502 | if (cause != BSSGP_CAUSE_BVCI_BLOCKED && |
| 503 | cause != BSSGP_CAUSE_UNKNOWN_BVCI) |
| 504 | return; |
| 505 | |
| 506 | if (!TLVP_PRESENT(bp->tp, BSSGP_IE_BVCI)) |
| 507 | return; |
| 508 | |
| 509 | if (gprs_bssgp_pcu_current_bctx()->bvci != bp->bvci) { |
| 510 | LOGP(DPCU, LOGL_NOTICE, |
| 511 | "Received BSSGP STATUS message for an unknown BVCI (%d), " |
| 512 | "ignored\n", |
| 513 | bp->bvci); |
| 514 | return; |
| 515 | } |
| 516 | |
| 517 | switch (cause) { |
| 518 | case BSSGP_CAUSE_BVCI_BLOCKED: |
| 519 | if (the_pcu.bvc_unblocked) { |
| 520 | the_pcu.bvc_unblocked = 0; |
| 521 | bvc_timeout(NULL); |
| 522 | } |
| 523 | break; |
| 524 | |
| 525 | case BSSGP_CAUSE_UNKNOWN_BVCI: |
| 526 | if (the_pcu.bvc_reset) { |
| 527 | the_pcu.bvc_reset = 0; |
| 528 | bvc_timeout(NULL); |
| 529 | } |
| 530 | break; |
| 531 | default: |
| 532 | break; |
| 533 | } |
| 534 | } |
| 535 | |
Harald Welte | 477e79e | 2012-06-18 12:21:03 +0800 | [diff] [blame] | 536 | int bssgp_prim_cb(struct osmo_prim_hdr *oph, void *ctx) |
| 537 | { |
Jacob Erlbeck | 39645b8 | 2015-03-16 12:27:11 +0100 | [diff] [blame] | 538 | struct osmo_bssgp_prim *bp; |
| 539 | bp = container_of(oph, struct osmo_bssgp_prim, oph); |
| 540 | |
| 541 | switch (oph->sap) { |
| 542 | case SAP_BSSGP_NM: |
| 543 | if (oph->primitive == PRIM_NM_STATUS) |
| 544 | handle_nm_status(bp); |
| 545 | break; |
| 546 | default: |
| 547 | break; |
| 548 | } |
Harald Welte | 477e79e | 2012-06-18 12:21:03 +0800 | [diff] [blame] | 549 | return 0; |
| 550 | } |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 551 | |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 552 | void gprs_ns_prim_status_cb(struct osmo_gprs_ns2_prim *nsp) |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 553 | { |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 554 | switch (nsp->u.status.cause) { |
| 555 | case NS_AFF_CAUSE_SNS_CONFIGURED: |
| 556 | LOGP(DPCU, LOGL_NOTICE, "NS-NSE %d SNS configured.\n", nsp->nsei); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 557 | break; |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 558 | case NS_AFF_CAUSE_RECOVERY: |
| 559 | LOGP(DPCU, LOGL_NOTICE, "NS-NSE %d became available\n", nsp->nsei); |
Holger Hans Peter Freyther | 4b984b1 | 2013-07-13 12:57:06 +0200 | [diff] [blame] | 560 | if (!the_pcu.nsvc_unblocked) { |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 561 | the_pcu.bvc_sig_reset = 0; |
| 562 | the_pcu.bvc_reset = 0; |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 563 | the_pcu.nsvc_unblocked = 1; |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 564 | bvc_timeout(NULL); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 565 | } |
| 566 | break; |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 567 | case NS_AFF_CAUSE_FAILURE: |
| 568 | LOGP(DPCU, LOGL_NOTICE, "NS-NSE %d became unavailable\n", nsp->nsei); |
Holger Hans Peter Freyther | 4b984b1 | 2013-07-13 12:57:06 +0200 | [diff] [blame] | 569 | if (the_pcu.nsvc_unblocked) { |
| 570 | the_pcu.nsvc_unblocked = 0; |
Holger Hans Peter Freyther | ed70cb7 | 2013-07-13 12:53:46 +0200 | [diff] [blame] | 571 | osmo_timer_del(&the_pcu.bvc_timer); |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 572 | the_pcu.bvc_sig_reset = 0; |
| 573 | the_pcu.bvc_reset = 0; |
| 574 | the_pcu.bvc_unblocked = 0; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 575 | } |
| 576 | break; |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 577 | default: |
| 578 | LOGP(DPCU, LOGL_NOTICE, |
| 579 | "NS: %s Unknown prim %d from NS\n", |
| 580 | get_value_string(osmo_prim_op_names, nsp->oph.operation), |
| 581 | nsp->oph.primitive); |
| 582 | break; |
| 583 | } |
| 584 | } |
| 585 | |
| 586 | /* called by the ns layer */ |
| 587 | int gprs_ns_prim_cb(struct osmo_prim_hdr *oph, void *ctx) |
| 588 | { |
| 589 | struct osmo_gprs_ns2_prim *nsp; |
| 590 | int rc = 0; |
| 591 | |
| 592 | if (oph->sap != SAP_NS) |
| 593 | return 0; |
| 594 | |
| 595 | nsp = container_of(oph, struct osmo_gprs_ns2_prim, oph); |
| 596 | |
| 597 | if (oph->operation != PRIM_OP_INDICATION) { |
| 598 | LOGP(DPCU, LOGL_NOTICE, "NS: %s Unknown prim %d from NS\n", |
| 599 | get_value_string(osmo_prim_op_names, oph->operation), |
| 600 | oph->operation); |
| 601 | return 0; |
| 602 | } |
| 603 | |
| 604 | switch (oph->primitive) { |
| 605 | case PRIM_NS_UNIT_DATA: |
| 606 | /* hand the message into the BSSGP implementation */ |
| 607 | /* add required msg fields for Gb layer */ |
| 608 | msgb_bssgph(oph->msg) = oph->msg->l3h; |
| 609 | msgb_bvci(oph->msg) = nsp->bvci; |
| 610 | msgb_nsei(oph->msg) = nsp->nsei; |
| 611 | rc = gprs_bssgp_pcu_rcvmsg(oph->msg); |
| 612 | break; |
| 613 | case PRIM_NS_STATUS: |
| 614 | gprs_ns_prim_status_cb(nsp); |
| 615 | break; |
| 616 | default: |
| 617 | LOGP(DPCU, LOGL_NOTICE, |
| 618 | "NS: %s Unknown prim %d from NS\n", |
| 619 | get_value_string(osmo_prim_op_names, oph->operation), |
| 620 | oph->primitive); |
Jacob Erlbeck | ebebad1 | 2015-08-17 14:43:52 +0200 | [diff] [blame] | 621 | break; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 622 | } |
| 623 | |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 624 | return rc; |
| 625 | } |
| 626 | |
| 627 | /* called by the bssgp layer to send NS PDUs */ |
| 628 | int gprs_gp_send_cb(void *ctx, struct msgb *msg) |
| 629 | { |
| 630 | struct gprs_ns2_inst *nsi = (struct gprs_ns2_inst *) ctx; |
| 631 | struct osmo_gprs_ns2_prim nsp = {}; |
| 632 | nsp.nsei = msgb_nsei(msg); |
| 633 | nsp.bvci = msgb_bvci(msg); |
| 634 | osmo_prim_init(&nsp.oph, SAP_NS, PRIM_NS_UNIT_DATA, |
| 635 | PRIM_OP_REQUEST, msg); |
| 636 | return gprs_ns2_recv_prim(nsi, &nsp.oph); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 637 | } |
| 638 | |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 639 | static unsigned count_pdch(const struct gprs_rlcmac_bts *bts) |
| 640 | { |
| 641 | size_t trx_no, ts_no; |
| 642 | unsigned num_pdch = 0; |
| 643 | |
| 644 | for (trx_no = 0; trx_no < ARRAY_SIZE(bts->trx); ++trx_no) { |
| 645 | const struct gprs_rlcmac_trx *trx = &bts->trx[trx_no]; |
| 646 | |
| 647 | for (ts_no = 0; ts_no < ARRAY_SIZE(trx->pdch); ++ts_no) { |
| 648 | const struct gprs_rlcmac_pdch *pdch = &trx->pdch[ts_no]; |
| 649 | |
| 650 | if (pdch->is_enabled()) |
| 651 | num_pdch += 1; |
| 652 | } |
| 653 | } |
| 654 | |
| 655 | return num_pdch; |
| 656 | } |
| 657 | |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 658 | static uint32_t gprs_bssgp_max_leak_rate(enum CodingScheme cs, int num_pdch) |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 659 | { |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 660 | int bytes_per_rlc_block = mcs_max_data_block_bytes(cs) * num_data_blocks(mcs_header_type(cs)); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 661 | |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 662 | /* n byte payload per 20ms */ |
| 663 | return bytes_per_rlc_block * (1000 / 20) * num_pdch; |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 664 | } |
| 665 | |
| 666 | static uint32_t compute_bucket_size(struct gprs_rlcmac_bts *bts, |
| 667 | uint32_t leak_rate, uint32_t fallback) |
| 668 | { |
| 669 | uint32_t bucket_size = 0; |
Jacob Erlbeck | 0288cdb | 2015-05-06 10:47:30 +0200 | [diff] [blame] | 670 | uint16_t bucket_time = bts->fc_bucket_time; |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 671 | |
Jacob Erlbeck | 0288cdb | 2015-05-06 10:47:30 +0200 | [diff] [blame] | 672 | if (bucket_time == 0) |
| 673 | bucket_time = bts->force_llc_lifetime; |
| 674 | |
| 675 | if (bucket_time == 0xffff) |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 676 | bucket_size = FC_MAX_BUCKET_SIZE; |
| 677 | |
Jacob Erlbeck | 0288cdb | 2015-05-06 10:47:30 +0200 | [diff] [blame] | 678 | if (bucket_size == 0 && bucket_time && leak_rate) |
| 679 | bucket_size = (uint64_t)leak_rate * bucket_time / 100; |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 680 | |
| 681 | if (bucket_size == 0 && leak_rate) |
| 682 | bucket_size = leak_rate * FC_DEFAULT_LIFE_TIME_SECS; |
| 683 | |
| 684 | if (bucket_size == 0) |
| 685 | bucket_size = fallback; |
| 686 | |
| 687 | if (bucket_size > FC_MAX_BUCKET_SIZE) |
| 688 | bucket_size = FC_MAX_BUCKET_SIZE; |
| 689 | |
| 690 | return bucket_size; |
| 691 | } |
| 692 | |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 693 | static uint32_t get_and_reset_avg_queue_delay(void) |
| 694 | { |
Pau Espin Pedrol | 1de6873 | 2020-03-11 14:04:52 +0100 | [diff] [blame] | 695 | struct timespec *delay_sum = &the_pcu.queue_delay_sum; |
Jacob Erlbeck | 0ae4313 | 2015-06-11 12:03:18 +0200 | [diff] [blame] | 696 | uint32_t delay_sum_ms = delay_sum->tv_sec * 1000 + |
Pau Espin Pedrol | 1de6873 | 2020-03-11 14:04:52 +0100 | [diff] [blame] | 697 | delay_sum->tv_nsec / 1000000000; |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 698 | uint32_t avg_delay_ms = 0; |
| 699 | |
| 700 | if (the_pcu.queue_delay_count > 0) |
| 701 | avg_delay_ms = delay_sum_ms / the_pcu.queue_delay_count; |
| 702 | |
| 703 | /* Reset accumulator */ |
Pau Espin Pedrol | 1de6873 | 2020-03-11 14:04:52 +0100 | [diff] [blame] | 704 | delay_sum->tv_sec = delay_sum->tv_nsec = 0; |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 705 | the_pcu.queue_delay_count = 0; |
| 706 | |
| 707 | return avg_delay_ms; |
| 708 | } |
| 709 | |
Jacob Erlbeck | 2db0f08 | 2015-09-07 18:49:00 +0200 | [diff] [blame] | 710 | static int get_and_reset_measured_leak_rate(int *usage_by_1000, unsigned num_pdch) |
| 711 | { |
| 712 | int rate; /* byte per second */ |
| 713 | |
| 714 | if (the_pcu.queue_frames_sent == 0) |
| 715 | return -1; |
| 716 | |
| 717 | if (the_pcu.queue_frames_recv == 0) |
| 718 | return -1; |
| 719 | |
| 720 | *usage_by_1000 = the_pcu.queue_frames_recv * 1000 / |
| 721 | the_pcu.queue_frames_sent; |
| 722 | |
| 723 | /* 20ms/num_pdch is the average RLC block duration, so the rate is |
| 724 | * calculated as: |
| 725 | * rate = bytes_recv / (block_dur * block_count) */ |
| 726 | rate = the_pcu.queue_bytes_recv * 1000 * num_pdch / |
| 727 | (20 * the_pcu.queue_frames_recv); |
| 728 | |
| 729 | the_pcu.queue_frames_sent = 0; |
| 730 | the_pcu.queue_bytes_recv = 0; |
| 731 | the_pcu.queue_frames_recv = 0; |
| 732 | |
| 733 | return rate; |
| 734 | } |
| 735 | |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 736 | static enum CodingScheme max_coding_scheme_dl(struct gprs_rlcmac_bts *bts) |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 737 | { |
| 738 | int num; |
| 739 | |
| 740 | if (bts->egprs_enabled) { |
| 741 | if (!bts->cs_adj_enabled) { |
| 742 | if (bts->initial_mcs_dl) |
| 743 | num = bts->initial_mcs_dl; |
| 744 | else |
| 745 | num = 1; |
| 746 | } else if (bts->max_mcs_dl) { |
| 747 | num = bts->max_mcs_dl; |
| 748 | } else { |
| 749 | num = 9; |
| 750 | } |
| 751 | |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 752 | return mcs_get_egprs_by_num(num); |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 753 | } |
| 754 | |
| 755 | if (!bts->cs_adj_enabled) { |
| 756 | if (bts->initial_cs_dl) |
| 757 | num = bts->initial_cs_dl; |
| 758 | else if (bts->cs4) |
| 759 | num = 4; |
| 760 | else if (bts->cs3) |
| 761 | num = 3; |
| 762 | else if (bts->cs2) |
| 763 | num = 2; |
| 764 | else |
| 765 | num = 1; |
| 766 | } else if (bts->max_cs_dl) { |
| 767 | num = bts->max_cs_dl; |
| 768 | } else { |
| 769 | num = 4; |
| 770 | } |
| 771 | |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 772 | return mcs_get_gprs_by_num(num); |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 773 | } |
| 774 | |
Pau Espin Pedrol | 3f064f5 | 2019-12-10 17:09:51 +0100 | [diff] [blame] | 775 | static int gprs_bssgp_tx_fc_bvc(void) |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 776 | { |
Jacob Erlbeck | 87d7341 | 2015-04-21 12:56:48 +0200 | [diff] [blame] | 777 | struct gprs_rlcmac_bts *bts; |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 778 | uint32_t bucket_size; /* oct */ |
| 779 | uint32_t ms_bucket_size; /* oct */ |
| 780 | uint32_t leak_rate; /* oct/s */ |
| 781 | uint32_t ms_leak_rate; /* oct/s */ |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 782 | uint32_t avg_delay_ms; |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 783 | int num_pdch = -1; |
Pau Espin Pedrol | 2ae8337 | 2020-05-18 11:35:35 +0200 | [diff] [blame] | 784 | enum CodingScheme max_cs_dl; |
Jacob Erlbeck | 87d7341 | 2015-04-21 12:56:48 +0200 | [diff] [blame] | 785 | |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 786 | if (!the_pcu.bctx) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 787 | LOGP(DBSSGP, LOGL_ERROR, "No bctx\n"); |
| 788 | return -EIO; |
| 789 | } |
Jacob Erlbeck | 87d7341 | 2015-04-21 12:56:48 +0200 | [diff] [blame] | 790 | bts = bts_main_data(); |
| 791 | |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 792 | max_cs_dl = max_coding_scheme_dl(bts); |
Jacob Erlbeck | 6eed191 | 2015-07-21 18:29:46 +0200 | [diff] [blame] | 793 | |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 794 | bucket_size = bts->fc_bvc_bucket_size; |
| 795 | leak_rate = bts->fc_bvc_leak_rate; |
| 796 | ms_bucket_size = bts->fc_ms_bucket_size; |
| 797 | ms_leak_rate = bts->fc_ms_leak_rate; |
| 798 | |
| 799 | if (leak_rate == 0) { |
Jacob Erlbeck | 2db0f08 | 2015-09-07 18:49:00 +0200 | [diff] [blame] | 800 | int meas_rate; |
| 801 | int usage; /* in 0..1000 */ |
| 802 | |
| 803 | if (num_pdch < 0) |
| 804 | num_pdch = count_pdch(bts); |
| 805 | |
| 806 | meas_rate = get_and_reset_measured_leak_rate(&usage, num_pdch); |
| 807 | if (meas_rate > 0) { |
| 808 | leak_rate = gprs_bssgp_max_leak_rate(max_cs_dl, num_pdch); |
| 809 | leak_rate = |
| 810 | (meas_rate * usage + leak_rate * (1000 - usage)) / |
| 811 | 1000; |
| 812 | LOGP(DBSSGP, LOGL_DEBUG, |
| 813 | "Estimated BVC leak rate = %d " |
| 814 | "(measured %d, usage %d%%)\n", |
| 815 | leak_rate, meas_rate, usage/10); |
| 816 | } |
| 817 | } |
| 818 | |
| 819 | if (leak_rate == 0) { |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 820 | if (num_pdch < 0) |
| 821 | num_pdch = count_pdch(bts); |
| 822 | |
Jacob Erlbeck | 6eed191 | 2015-07-21 18:29:46 +0200 | [diff] [blame] | 823 | leak_rate = gprs_bssgp_max_leak_rate(max_cs_dl, num_pdch); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 824 | |
| 825 | LOGP(DBSSGP, LOGL_DEBUG, |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 826 | "Computed BVC leak rate = %d, num_pdch = %d, cs = %s\n", |
Max | 136ebcc | 2019-03-05 14:59:03 +0100 | [diff] [blame] | 827 | leak_rate, num_pdch, mcs_name(max_cs_dl)); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 828 | }; |
| 829 | |
| 830 | if (ms_leak_rate == 0) { |
| 831 | int ms_num_pdch; |
Jacob Erlbeck | 7f79f0d | 2015-07-17 11:38:49 +0200 | [diff] [blame] | 832 | int max_pdch = gprs_alloc_max_dl_slots_per_ms(bts); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 833 | |
| 834 | if (num_pdch < 0) |
| 835 | num_pdch = count_pdch(bts); |
| 836 | |
| 837 | ms_num_pdch = num_pdch; |
Jacob Erlbeck | 7f79f0d | 2015-07-17 11:38:49 +0200 | [diff] [blame] | 838 | if (max_pdch > FC_MS_MAX_RX_SLOTS) |
| 839 | max_pdch = FC_MS_MAX_RX_SLOTS; |
| 840 | if (ms_num_pdch > max_pdch) |
| 841 | ms_num_pdch = max_pdch; |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 842 | |
Jacob Erlbeck | 6eed191 | 2015-07-21 18:29:46 +0200 | [diff] [blame] | 843 | ms_leak_rate = gprs_bssgp_max_leak_rate(max_cs_dl, ms_num_pdch); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 844 | |
| 845 | /* TODO: To properly support multiple TRX, the per MS leak rate |
| 846 | * should be derived from the max number of PDCH TS per TRX. |
| 847 | */ |
| 848 | LOGP(DBSSGP, LOGL_DEBUG, |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 849 | "Computed MS default leak rate = %d, ms_num_pdch = %d, " |
| 850 | "cs = %s\n", |
Max | 136ebcc | 2019-03-05 14:59:03 +0100 | [diff] [blame] | 851 | ms_leak_rate, ms_num_pdch, mcs_name(max_cs_dl)); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 852 | }; |
| 853 | |
| 854 | /* TODO: Force leak_rate to 0 on buffer bloat */ |
| 855 | |
| 856 | if (bucket_size == 0) |
| 857 | bucket_size = compute_bucket_size(bts, leak_rate, |
| 858 | FC_FALLBACK_BVC_BUCKET_SIZE); |
| 859 | |
| 860 | if (ms_bucket_size == 0) |
| 861 | ms_bucket_size = compute_bucket_size(bts, ms_leak_rate, |
| 862 | FC_MS_BUCKET_SIZE_BY_BMAX(bucket_size)); |
| 863 | |
| 864 | if (leak_rate > FC_MAX_BUCKET_LEAK_RATE) |
| 865 | leak_rate = FC_MAX_BUCKET_LEAK_RATE; |
| 866 | |
| 867 | if (ms_leak_rate > FC_MAX_BUCKET_LEAK_RATE) |
| 868 | ms_leak_rate = FC_MAX_BUCKET_LEAK_RATE; |
| 869 | |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 870 | /* Avg queue delay monitoring */ |
| 871 | avg_delay_ms = get_and_reset_avg_queue_delay(); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 872 | |
Jacob Erlbeck | 6eeb7c7 | 2015-05-06 15:26:08 +0200 | [diff] [blame] | 873 | /* Update tag */ |
| 874 | the_pcu.fc_tag += 1; |
| 875 | |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 876 | LOGP(DBSSGP, LOGL_DEBUG, |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 877 | "Sending FLOW CONTROL BVC, Bmax = %d, R = %d, Bmax_MS = %d, " |
| 878 | "R_MS = %d, avg_dly = %d\n", |
| 879 | bucket_size, leak_rate, ms_bucket_size, ms_leak_rate, |
| 880 | avg_delay_ms); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 881 | |
Jacob Erlbeck | 6eeb7c7 | 2015-05-06 15:26:08 +0200 | [diff] [blame] | 882 | return bssgp_tx_fc_bvc(the_pcu.bctx, the_pcu.fc_tag, |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 883 | bucket_size, leak_rate, |
| 884 | ms_bucket_size, ms_leak_rate, |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 885 | NULL, &avg_delay_ms); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 886 | } |
| 887 | |
| 888 | static void bvc_timeout(void *_priv) |
| 889 | { |
Pau Espin Pedrol | 5211d9d | 2019-09-05 16:20:22 +0200 | [diff] [blame] | 890 | unsigned long secs; |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 891 | if (!the_pcu.bvc_sig_reset) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 892 | LOGP(DBSSGP, LOGL_INFO, "Sending reset on BVCI 0\n"); |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 893 | bssgp_tx_bvc_reset(the_pcu.bctx, 0, BSSGP_CAUSE_OML_INTERV); |
Pau Espin Pedrol | 5211d9d | 2019-09-05 16:20:22 +0200 | [diff] [blame] | 894 | secs = osmo_tdef_get(the_pcu.bts->T_defs_pcu, 2, OSMO_TDEF_S, -1); |
| 895 | osmo_timer_schedule(&the_pcu.bvc_timer, secs, 0); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 896 | return; |
| 897 | } |
| 898 | |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 899 | if (!the_pcu.bvc_reset) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 900 | LOGP(DBSSGP, LOGL_INFO, "Sending reset on BVCI %d\n", |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 901 | the_pcu.bctx->bvci); |
| 902 | bssgp_tx_bvc_reset(the_pcu.bctx, the_pcu.bctx->bvci, BSSGP_CAUSE_OML_INTERV); |
Pau Espin Pedrol | 5211d9d | 2019-09-05 16:20:22 +0200 | [diff] [blame] | 903 | secs = osmo_tdef_get(the_pcu.bts->T_defs_pcu, 2, OSMO_TDEF_S, -1); |
| 904 | osmo_timer_schedule(&the_pcu.bvc_timer, secs, 0); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 905 | return; |
| 906 | } |
| 907 | |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 908 | if (!the_pcu.bvc_unblocked) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 909 | LOGP(DBSSGP, LOGL_INFO, "Sending unblock on BVCI %d\n", |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 910 | the_pcu.bctx->bvci); |
| 911 | bssgp_tx_bvc_unblock(the_pcu.bctx); |
Pau Espin Pedrol | 5211d9d | 2019-09-05 16:20:22 +0200 | [diff] [blame] | 912 | secs = osmo_tdef_get(the_pcu.bts->T_defs_pcu, 1, OSMO_TDEF_S, -1); |
| 913 | osmo_timer_schedule(&the_pcu.bvc_timer, secs, 0); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 914 | return; |
| 915 | } |
| 916 | |
| 917 | LOGP(DBSSGP, LOGL_DEBUG, "Sending flow control info on BVCI %d\n", |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 918 | the_pcu.bctx->bvci); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 919 | gprs_bssgp_tx_fc_bvc(); |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 920 | osmo_timer_schedule(&the_pcu.bvc_timer, the_pcu.bts->fc_interval, 0); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 921 | } |
| 922 | |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 923 | static int ns_create_nsvc(struct gprs_rlcmac_bts *bts, |
| 924 | uint16_t nsei, |
| 925 | const struct osmo_sockaddr *local, |
| 926 | const struct osmo_sockaddr *remote, |
| 927 | const uint16_t *nsvci, |
| 928 | uint16_t valid) |
Jacob Erlbeck | ebebad1 | 2015-08-17 14:43:52 +0200 | [diff] [blame] | 929 | { |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 930 | int i, rc; |
| 931 | uint16_t binds = 0; |
| 932 | bool nsvcs = false; |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 933 | struct gprs_ns2_vc *nsvc; |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 934 | struct gprs_ns2_vc_bind *bind[PCU_IF_NUM_NSVC] = { }; |
| 935 | |
| 936 | if (!valid) |
| 937 | return -1; |
| 938 | |
| 939 | for (i = 0; i < PCU_IF_NUM_NSVC; i++) { |
| 940 | if (!(valid & (1 << i))) |
| 941 | continue; |
| 942 | |
| 943 | if (!gprs_ns2_ip_bind_by_sockaddr(bts->nsi, &local[i])) { |
| 944 | rc = gprs_ns2_ip_bind(bts->nsi, &local[i], 0, &bind[i]); |
| 945 | if (rc < 0) { |
| 946 | LOGP(DBSSGP, LOGL_ERROR, "Failed to bind to %s\n", osmo_sockaddr_to_str(&local[i])); |
| 947 | continue; |
| 948 | } |
| 949 | } |
| 950 | |
| 951 | binds |= 1 << i; |
| 952 | } |
| 953 | |
| 954 | if (!binds) { |
| 955 | LOGP(DBSSGP, LOGL_ERROR, "Failed to bind to any NS-VC\n"); |
| 956 | return -1; |
| 957 | } |
Jacob Erlbeck | ebebad1 | 2015-08-17 14:43:52 +0200 | [diff] [blame] | 958 | |
Vadim Yanitskiy | 974cc7b | 2020-10-10 06:00:05 +0700 | [diff] [blame] | 959 | bts->nse = gprs_ns2_nse_by_nsei(bts->nsi, nsei); |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 960 | if (!bts->nse) |
| 961 | bts->nse = gprs_ns2_create_nse(bts->nsi, nsei); |
Vadim Yanitskiy | 974cc7b | 2020-10-10 06:00:05 +0700 | [diff] [blame] | 962 | |
Vadim Yanitskiy | 974cc7b | 2020-10-10 06:00:05 +0700 | [diff] [blame] | 963 | if (!bts->nse) { |
| 964 | LOGP(DBSSGP, LOGL_ERROR, "Failed to create NSE\n"); |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 965 | gprs_ns2_free_binds(bts->nsi); |
Vadim Yanitskiy | 974cc7b | 2020-10-10 06:00:05 +0700 | [diff] [blame] | 966 | return 1; |
| 967 | } |
| 968 | |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 969 | for (i = 0; i < PCU_IF_NUM_NSVC; i++) { |
| 970 | if (!(binds & (1 << i))) |
| 971 | continue; |
| 972 | |
| 973 | /* FIXME: for SNS we just use the first successful NS-VC instead of all for the initial connect */ |
| 974 | if (bts->gb_dialect_sns) { |
| 975 | rc = gprs_ns2_ip_connect_sns(bind[i], &remote[i], nsei); |
| 976 | if (!rc) |
| 977 | return rc; |
| 978 | else |
| 979 | LOGP(DBSSGP, LOGL_ERROR, "Failed to connect to (SNS) towards SGSN %s!\n", osmo_sockaddr_to_str(&remote[i])); |
| 980 | } else { |
| 981 | nsvc = gprs_ns2_ip_connect(bind[i], &remote[i], bts->nse, nsvci[i]); |
| 982 | if (nsvc) |
| 983 | nsvcs = true; |
| 984 | else |
| 985 | LOGP(DBSSGP, LOGL_ERROR, "Failed to connect to towards SGSN %s!\n", osmo_sockaddr_to_str(&remote[i])); |
| 986 | } |
Jacob Erlbeck | ebebad1 | 2015-08-17 14:43:52 +0200 | [diff] [blame] | 987 | } |
| 988 | |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 989 | return nsvcs ? 0 : -1; |
| 990 | } |
| 991 | |
| 992 | struct nsvc_cb { |
| 993 | const struct osmo_sockaddr *local; |
| 994 | const struct osmo_sockaddr *remote; |
| 995 | const uint16_t *nsvci; |
| 996 | /* [in] bitmask of valid nsvc in local/remote */ |
| 997 | uint16_t valid; |
| 998 | /* [out] bitmask of found nsvcs */ |
| 999 | uint16_t found; |
| 1000 | }; |
| 1001 | |
| 1002 | static int ns_conf_vc_cb(struct gprs_ns2_vc *nsvc, void *ctx) |
| 1003 | { |
| 1004 | struct nsvc_cb *data = (struct nsvc_cb *) ctx; |
| 1005 | |
| 1006 | for (unsigned int i = 0; i < PCU_IF_NUM_NSVC; i++) { |
| 1007 | if (!(data->valid & (1 << i))) |
| 1008 | continue; |
| 1009 | if (data->found & (1 << i)) |
| 1010 | continue; |
| 1011 | |
| 1012 | if (gprs_ns2_ip_vc_equal(nsvc, &data->local[i], |
| 1013 | &data->remote[i], |
| 1014 | data->nsvci[i])) { |
| 1015 | data->found |= 1 << i; |
| 1016 | return 0; |
| 1017 | } |
| 1018 | } |
| 1019 | |
| 1020 | /* Found an extra nsvc */ |
| 1021 | LOGP(DBSSGP, LOGL_DEBUG, " Removing NSVC %s\n", gprs_ns2_ll_str(nsvc)); |
| 1022 | gprs_ns2_free_nsvc(nsvc); |
| 1023 | |
| 1024 | return 0; |
| 1025 | } |
| 1026 | |
| 1027 | int gprs_ns_config(struct gprs_rlcmac_bts *bts, uint16_t nsei, |
| 1028 | const struct osmo_sockaddr *local, |
| 1029 | const struct osmo_sockaddr *remote, |
| 1030 | uint16_t *nsvci, uint16_t valid) |
| 1031 | { |
| 1032 | int rc = 0; |
| 1033 | if (!bts->nse) { |
| 1034 | /* there shouldn't any previous state. */ |
| 1035 | gprs_ns2_free_nses(bts->nsi); |
| 1036 | gprs_ns2_free_binds(bts->nsi); |
| 1037 | rc = ns_create_nsvc(bts, nsei, local, remote, nsvci, valid); |
| 1038 | } else if (nsei != gprs_ns2_nse_nsei(bts->nse)) { |
| 1039 | /* the NSEI has changed */ |
| 1040 | gprs_ns2_free_nses(bts->nsi); |
| 1041 | gprs_ns2_free_binds(bts->nsi); |
| 1042 | rc = ns_create_nsvc(bts, nsei, local, remote, nsvci, valid); |
| 1043 | } else if (bts->gb_dialect_sns) { |
| 1044 | /* SNS: check if the initial nsvc is the same, if not recreate it */ |
| 1045 | const struct osmo_sockaddr *initial = gprs_ns2_nse_sns_remote(bts->nse); |
| 1046 | for (unsigned int i = 0; i < PCU_IF_NUM_NSVC; i++) { |
| 1047 | if (!(valid & (1 << i))) |
| 1048 | continue; |
| 1049 | |
| 1050 | /* found the initial - everything should be fine */ |
| 1051 | if (!osmo_sockaddr_cmp(initial, &remote[i])) |
| 1052 | return 0; |
| 1053 | } |
| 1054 | |
| 1055 | gprs_ns2_free_nses(bts->nsi); |
| 1056 | gprs_ns2_free_binds(bts->nsi); |
| 1057 | rc = ns_create_nsvc(bts, nsei, local, remote, nsvci, valid); |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 1058 | } else { |
Alexander Couzens | 5bece2a | 2020-10-12 02:27:22 +0200 | [diff] [blame] | 1059 | /* check if all NSVC are still the same. */ |
| 1060 | struct nsvc_cb data = { |
| 1061 | .local = &local[0], |
| 1062 | .remote = &remote[0], |
| 1063 | .nsvci = &nsvci[0], |
| 1064 | .valid = valid, |
| 1065 | .found = 0, |
| 1066 | }; |
| 1067 | |
| 1068 | /* search the current active nsvcs */ |
| 1069 | gprs_ns2_nse_foreach_nsvc(bts->nse, &ns_conf_vc_cb, &data); |
| 1070 | |
| 1071 | /* we found all our valid nsvcs and might have removed all other nsvcs */ |
| 1072 | if (valid == data.found) |
| 1073 | return 0; |
| 1074 | |
| 1075 | /* remove all found nsvcs from the valid field */ |
| 1076 | valid &= ~data.found; |
| 1077 | rc = ns_create_nsvc(bts, nsei, local, remote, nsvci, valid); |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 1078 | } |
| 1079 | |
| 1080 | if (rc) |
| 1081 | LOGP(DBSSGP, LOGL_ERROR, "Failed to connect!\n"); |
| 1082 | |
| 1083 | return rc; |
Jacob Erlbeck | ebebad1 | 2015-08-17 14:43:52 +0200 | [diff] [blame] | 1084 | } |
| 1085 | |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 1086 | struct gprs_bssgp_pcu *gprs_bssgp_init( |
| 1087 | struct gprs_rlcmac_bts *bts, |
| 1088 | uint16_t nsei, uint16_t bvci, |
| 1089 | uint16_t mcc, uint16_t mnc, bool mnc_3_digits, |
| 1090 | uint16_t lac, uint16_t rac, uint16_t cell_id) |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1091 | { |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1092 | |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 1093 | /* if already created... return the current address */ |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 1094 | if (the_pcu.bctx) |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 1095 | return &the_pcu; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1096 | |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 1097 | the_pcu.bts = bts; |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 1098 | the_pcu.bctx = btsctx_alloc(bvci, nsei); |
| 1099 | if (!the_pcu.bctx) { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 1100 | LOGP(DBSSGP, LOGL_ERROR, "Failed to create BSSGP context\n"); |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 1101 | the_pcu.bts->nse = NULL; |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 1102 | return NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1103 | } |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 1104 | the_pcu.bctx->ra_id.mcc = spoof_mcc ? : mcc; |
Neels Hofmeyr | bdc55fa | 2018-02-21 00:39:07 +0100 | [diff] [blame] | 1105 | if (spoof_mnc) { |
| 1106 | the_pcu.bctx->ra_id.mnc = spoof_mnc; |
| 1107 | the_pcu.bctx->ra_id.mnc_3_digits = spoof_mnc_3_digits; |
| 1108 | } else { |
| 1109 | the_pcu.bctx->ra_id.mnc = mnc; |
| 1110 | the_pcu.bctx->ra_id.mnc_3_digits = mnc_3_digits; |
| 1111 | } |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 1112 | the_pcu.bctx->ra_id.lac = lac; |
| 1113 | the_pcu.bctx->ra_id.rac = rac; |
| 1114 | the_pcu.bctx->cell_id = cell_id; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1115 | |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 1116 | osmo_timer_setup(&the_pcu.bvc_timer, bvc_timeout, bts); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 1117 | |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 1118 | return &the_pcu; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1119 | } |
| 1120 | |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 1121 | void gprs_bssgp_destroy(struct gprs_rlcmac_bts *bts) |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1122 | { |
Holger Hans Peter Freyther | ed70cb7 | 2013-07-13 12:53:46 +0200 | [diff] [blame] | 1123 | osmo_timer_del(&the_pcu.bvc_timer); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 1124 | |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1125 | /* FIXME: blocking... */ |
Holger Hans Peter Freyther | 40bd0c4 | 2013-07-13 12:58:20 +0200 | [diff] [blame] | 1126 | the_pcu.nsvc_unblocked = 0; |
| 1127 | the_pcu.bvc_sig_reset = 0; |
| 1128 | the_pcu.bvc_reset = 0; |
Pau Espin Pedrol | 3f064f5 | 2019-12-10 17:09:51 +0100 | [diff] [blame] | 1129 | the_pcu.bvc_unblocked = 0; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1130 | |
Vadim Yanitskiy | 0bf622e | 2019-11-09 01:57:17 +0700 | [diff] [blame] | 1131 | bssgp_bvc_ctx_free(the_pcu.bctx); |
Jacob Erlbeck | c362df2 | 2016-01-20 22:02:19 +0100 | [diff] [blame] | 1132 | the_pcu.bctx = NULL; |
Alexander Couzens | 290d903 | 2020-09-16 21:52:02 +0200 | [diff] [blame] | 1133 | |
| 1134 | gprs_ns2_free(bts->nsi); |
| 1135 | bts->nsi = NULL; |
| 1136 | bts->nse = NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1137 | } |
| 1138 | |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 1139 | struct bssgp_bvc_ctx *gprs_bssgp_pcu_current_bctx(void) |
| 1140 | { |
| 1141 | return the_pcu.bctx; |
| 1142 | } |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 1143 | |
Jacob Erlbeck | 2db0f08 | 2015-09-07 18:49:00 +0200 | [diff] [blame] | 1144 | void gprs_bssgp_update_frames_sent() |
| 1145 | { |
| 1146 | the_pcu.queue_frames_sent += 1; |
| 1147 | } |
| 1148 | |
| 1149 | void gprs_bssgp_update_bytes_received(unsigned bytes_recv, unsigned frames_recv) |
| 1150 | { |
| 1151 | the_pcu.queue_bytes_recv += bytes_recv; |
| 1152 | the_pcu.queue_frames_recv += frames_recv; |
| 1153 | } |
| 1154 | |
Pau Espin Pedrol | 1de6873 | 2020-03-11 14:04:52 +0100 | [diff] [blame] | 1155 | void gprs_bssgp_update_queue_delay(const struct timespec *tv_recv, |
| 1156 | const struct timespec *tv_now) |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 1157 | { |
Pau Espin Pedrol | 1de6873 | 2020-03-11 14:04:52 +0100 | [diff] [blame] | 1158 | struct timespec *delay_sum = &the_pcu.queue_delay_sum; |
| 1159 | struct timespec tv_delay; |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 1160 | |
Pau Espin Pedrol | 1de6873 | 2020-03-11 14:04:52 +0100 | [diff] [blame] | 1161 | timespecsub(tv_now, tv_recv, &tv_delay); |
| 1162 | timespecadd(delay_sum, &tv_delay, delay_sum); |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 1163 | |
| 1164 | the_pcu.queue_delay_count += 1; |
| 1165 | } |