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> |
Max | 1187a77 | 2018-01-26 13:31:42 +0100 | [diff] [blame] | 27 | #include <gprs_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> |
Max | 136ebcc | 2019-03-05 14:59:03 +0100 | [diff] [blame] | 33 | #include <osmocom/core/utils.h> |
| 34 | #include "coding_scheme.h" |
| 35 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 36 | |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 37 | /* Tuning parameters for BSSGP flow control */ |
| 38 | #define FC_DEFAULT_LIFE_TIME_SECS 10 /* experimental value, 10s */ |
| 39 | #define FC_MS_BUCKET_SIZE_BY_BMAX(bmax) ((bmax) / 2 + 500) /* experimental */ |
| 40 | #define FC_FALLBACK_BVC_BUCKET_SIZE 2000 /* e.g. on R = 0, value taken from PCAP files */ |
| 41 | #define FC_MS_MAX_RX_SLOTS 4 /* limit MS default R to 4 TS per MS */ |
| 42 | |
| 43 | /* Constants for BSSGP flow control */ |
| 44 | #define FC_MAX_BUCKET_LEAK_RATE (6553500 / 8) /* Byte/s */ |
| 45 | #define FC_MAX_BUCKET_SIZE 6553500 /* Octets */ |
| 46 | |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 47 | static struct gprs_bssgp_pcu the_pcu = { 0, }; |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 48 | |
Andreas Eversberg | 71cce91 | 2013-01-16 13:49:00 +0100 | [diff] [blame] | 49 | extern void *tall_pcu_ctx; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 50 | extern uint16_t spoof_mcc, spoof_mnc; |
Neels Hofmeyr | bdc55fa | 2018-02-21 00:39:07 +0100 | [diff] [blame] | 51 | extern bool spoof_mnc_3_digits; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 52 | |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 53 | static void bvc_timeout(void *_priv); |
Harald Welte | b26854c | 2019-02-21 17:17:07 +0100 | [diff] [blame] | 54 | static int gprs_ns_reconnect(struct gprs_nsvc *nsvc); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 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; |
Vadim Yanitskiy | 2c076bc | 2019-07-24 18:31:19 +0700 | [diff] [blame] | 90 | char imsi[OSMO_IMSI_BUF_SIZE] = "000"; |
Jacob Erlbeck | 4a07a3b | 2016-01-20 12:22:07 +0100 | [diff] [blame] | 91 | uint8_t ms_class = 0; |
| 92 | uint8_t egprs_ms_class = 0; |
Vadim Yanitskiy | 6170ac0 | 2019-07-24 16:44:13 +0700 | [diff] [blame] | 93 | int rc; |
Jacob Erlbeck | 4a07a3b | 2016-01-20 12:22:07 +0100 | [diff] [blame] | 94 | MS_Radio_Access_capability_t rac; |
Andreas Eversberg | 7d7cf54 | 2012-06-25 09:26:15 +0200 | [diff] [blame] | 95 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 96 | budh = (struct bssgp_ud_hdr *)msgb_bssgph(msg); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 97 | tlli = ntohl(budh->tlli); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 98 | |
Ivan Kluchnikov | 5e0df93 | 2012-06-12 15:33:52 +0400 | [diff] [blame] | 99 | /* LLC_PDU is mandatory IE */ |
| 100 | if (!TLVP_PRESENT(tp, BSSGP_IE_LLC_PDU)) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 101 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 102 | 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] | 103 | return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg); |
| 104 | } |
Ivan Kluchnikov | b172b1b | 2012-06-07 01:51:49 +0400 | [diff] [blame] | 105 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 106 | data = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_LLC_PDU); |
| 107 | len = TLVP_LEN(tp, BSSGP_IE_LLC_PDU); |
Vadim Yanitskiy | 3568fcf | 2020-02-03 16:38:51 +0700 | [diff] [blame] | 108 | if (len > LLC_MAX_LEN) |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 109 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 110 | 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] | 111 | return bssgp_tx_status(BSSGP_CAUSE_COND_IE_ERR, NULL, msg); |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 112 | } |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 113 | |
Andreas Eversberg | e13fa2d | 2012-07-09 17:10:44 +0200 | [diff] [blame] | 114 | /* read IMSI. if no IMSI exists, use first paging block (any paging), |
| 115 | * because during attachment the IMSI might not be known, so the MS |
| 116 | * will listen to all paging blocks. */ |
Vadim Yanitskiy | aad87b6 | 2019-07-24 16:36:45 +0700 | [diff] [blame] | 117 | if (TLVP_PRESENT(tp, BSSGP_IE_IMSI)) |
| 118 | { |
Vadim Yanitskiy | 6170ac0 | 2019-07-24 16:44:13 +0700 | [diff] [blame] | 119 | /* gsm48_mi_to_string() returns number of bytes written, including '\0' */ |
| 120 | rc = gsm48_mi_to_string(imsi, sizeof(imsi), TLVP_VAL(tp, BSSGP_IE_IMSI), |
| 121 | TLVP_LEN(tp, BSSGP_IE_IMSI)); |
| 122 | if (rc != GSM23003_IMSI_MAX_DIGITS + 1) { |
| 123 | LOGP(DBSSGP, LOGL_NOTICE, "Failed to parse IMSI IE (rc=%d)\n", rc); |
| 124 | return bssgp_tx_status(BSSGP_CAUSE_COND_IE_ERR, NULL, msg); |
| 125 | } |
Vadim Yanitskiy | aad87b6 | 2019-07-24 16:36:45 +0700 | [diff] [blame] | 126 | } |
Andreas Eversberg | 51ab134 | 2012-07-13 14:52:50 +0200 | [diff] [blame] | 127 | |
| 128 | /* parse ms radio access capability */ |
Jacob Erlbeck | 4a07a3b | 2016-01-20 12:22:07 +0100 | [diff] [blame] | 129 | if (parse_ra_cap(tp, &rac) >= 0) { |
| 130 | /* Get the EGPRS class from the RA capability */ |
| 131 | ms_class = Decoding::get_ms_class_by_capability(&rac); |
| 132 | egprs_ms_class = |
| 133 | Decoding::get_egprs_ms_class_by_capability(&rac); |
| 134 | LOGP(DBSSGP, LOGL_DEBUG, "Got downlink MS class %d/%d\n", |
| 135 | ms_class, egprs_ms_class); |
| 136 | } |
Andreas Eversberg | 51ab134 | 2012-07-13 14:52:50 +0200 | [diff] [blame] | 137 | |
Andreas Eversberg | 24131bf | 2012-07-21 11:09:58 +0200 | [diff] [blame] | 138 | /* get lifetime */ |
| 139 | uint16_t delay_csec = 0xffff; |
| 140 | if (TLVP_PRESENT(tp, BSSGP_IE_PDU_LIFETIME)) |
| 141 | { |
| 142 | uint8_t lt_len = TLVP_LEN(tp, BSSGP_IE_PDU_LIFETIME); |
Andreas Eversberg | 24131bf | 2012-07-21 11:09:58 +0200 | [diff] [blame] | 143 | if (lt_len == 2) |
Harald Welte | 49b7822 | 2017-06-11 11:27:59 +0200 | [diff] [blame] | 144 | delay_csec = tlvp_val16be(tp, BSSGP_IE_PDU_LIFETIME); |
Andreas Eversberg | 24131bf | 2012-07-21 11:09:58 +0200 | [diff] [blame] | 145 | else |
| 146 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP invalid length of " |
| 147 | "PDU_LIFETIME IE\n"); |
| 148 | } else |
| 149 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP missing mandatory " |
| 150 | "PDU_LIFETIME IE\n"); |
| 151 | |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 152 | /* get optional TLLI old */ |
| 153 | if (TLVP_PRESENT(tp, BSSGP_IE_TLLI)) |
| 154 | { |
| 155 | uint8_t tlli_len = TLVP_LEN(tp, BSSGP_IE_PDU_LIFETIME); |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 156 | if (tlli_len == 2) |
Harald Welte | 49b7822 | 2017-06-11 11:27:59 +0200 | [diff] [blame] | 157 | tlli_old = tlvp_val16be(tp, BSSGP_IE_TLLI); |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 158 | else |
| 159 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP invalid length of " |
| 160 | "TLLI (old) IE\n"); |
| 161 | } |
| 162 | |
Andreas Eversberg | e13fa2d | 2012-07-09 17:10:44 +0200 | [diff] [blame] | 163 | LOGP(DBSSGP, LOGL_INFO, "LLC [SGSN -> PCU] = TLLI: 0x%08x IMSI: %s len: %d\n", tlli, imsi, len); |
Ivan Kluchnikov | 5e0df93 | 2012-06-12 15:33:52 +0400 | [diff] [blame] | 164 | |
Jacob Erlbeck | 9399046 | 2015-05-15 15:50:43 +0200 | [diff] [blame] | 165 | return gprs_rlcmac_dl_tbf::handle(the_pcu.bts, tlli, tlli_old, imsi, |
Jacob Erlbeck | 14e00f8 | 2015-11-27 18:10:39 +0100 | [diff] [blame] | 166 | ms_class, egprs_ms_class, delay_csec, data, len); |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 167 | } |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 168 | |
Vadim Yanitskiy | 0b25f69 | 2020-03-26 03:38:05 +0700 | [diff] [blame] | 169 | /* Returns 0 on success, suggested BSSGP cause otherwise */ |
| 170 | static unsigned int get_paging_mi(const uint8_t **mi, uint8_t *mi_len, |
| 171 | const struct tlv_parsed *tp) |
| 172 | { |
| 173 | static uint8_t tmsi_buf[GSM48_TMSI_LEN]; |
| 174 | |
| 175 | /* Use TMSI (if present) or IMSI */ |
| 176 | if (TLVP_PRESENT(tp, BSSGP_IE_TMSI)) { |
| 177 | /* Be safe against an evil SGSN - check the length */ |
| 178 | if (TLVP_LEN(tp, BSSGP_IE_TMSI) != GSM23003_TMSI_NUM_BYTES) { |
| 179 | LOGP(DBSSGP, LOGL_NOTICE, "TMSI IE has odd length (!= 4)\n"); |
| 180 | return BSSGP_CAUSE_COND_IE_ERR; |
| 181 | } |
| 182 | |
| 183 | /* NOTE: TMSI (unlike IMSI) IE comes without MI type header */ |
| 184 | memcpy(tmsi_buf + 1, TLVP_VAL(tp, BSSGP_IE_TMSI), GSM23003_TMSI_NUM_BYTES); |
| 185 | tmsi_buf[0] = 0xf0 | GSM_MI_TYPE_TMSI; |
| 186 | |
| 187 | *mi_len = GSM48_TMSI_LEN; |
| 188 | *mi = tmsi_buf; |
| 189 | } else if (TLVP_PRESENT(tp, BSSGP_IE_IMSI)) { |
| 190 | *mi_len = TLVP_LEN(tp, BSSGP_IE_IMSI); |
| 191 | *mi = TLVP_VAL(tp, BSSGP_IE_IMSI); |
| 192 | } else { |
| 193 | LOGP(DBSSGP, LOGL_ERROR, "Neither TMSI IE nor IMSI IE is present\n"); |
| 194 | return BSSGP_CAUSE_MISSING_COND_IE; |
| 195 | } |
| 196 | |
| 197 | return 0; |
| 198 | } |
| 199 | |
Pau Espin Pedrol | 65a0d1d | 2019-12-10 19:29:22 +0100 | [diff] [blame] | 200 | static int gprs_bssgp_pcu_rx_paging_cs(struct msgb *msg, struct tlv_parsed *tp) |
| 201 | { |
| 202 | const uint8_t *mi; |
| 203 | uint8_t mi_len; |
Vadim Yanitskiy | 0b25f69 | 2020-03-26 03:38:05 +0700 | [diff] [blame] | 204 | int rc; |
Pau Espin Pedrol | 65a0d1d | 2019-12-10 19:29:22 +0100 | [diff] [blame] | 205 | uint8_t *chan_needed = (uint8_t *)TLVP_VAL(tp, BSSGP_IE_CHAN_NEEDED); |
| 206 | |
Vadim Yanitskiy | 0b25f69 | 2020-03-26 03:38:05 +0700 | [diff] [blame] | 207 | if ((rc = get_paging_mi(&mi, &mi_len, tp)) > 0) |
| 208 | return bssgp_tx_status((enum gprs_bssgp_cause) rc, NULL, msg); |
Pau Espin Pedrol | 65a0d1d | 2019-12-10 19:29:22 +0100 | [diff] [blame] | 209 | |
| 210 | return BTS::main_bts()->add_paging(chan_needed ? *chan_needed : 0, mi, mi_len); |
| 211 | } |
| 212 | |
Pau Espin Pedrol | 3f064f5 | 2019-12-10 17:09:51 +0100 | [diff] [blame] | 213 | 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] | 214 | { |
Vadim Yanitskiy | f497412 | 2020-03-26 01:44:37 +0700 | [diff] [blame] | 215 | char imsi[OSMO_IMSI_BUF_SIZE]; |
Pau Espin Pedrol | d7c3265 | 2019-12-23 12:41:34 +0100 | [diff] [blame] | 216 | uint16_t pgroup; |
Pau Espin Pedrol | 5530f12 | 2019-12-10 19:26:27 +0100 | [diff] [blame] | 217 | const uint8_t *mi; |
| 218 | uint8_t mi_len; |
Vadim Yanitskiy | 6170ac0 | 2019-07-24 16:44:13 +0700 | [diff] [blame] | 219 | int rc; |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 220 | |
Max | f3038e7 | 2019-03-19 15:39:05 +0100 | [diff] [blame] | 221 | if (!TLVP_PRESENT(tp, BSSGP_IE_IMSI)) { |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 222 | LOGP(DBSSGP, LOGL_ERROR, "No IMSI\n"); |
Pau Espin Pedrol | 5530f12 | 2019-12-10 19:26:27 +0100 | [diff] [blame] | 223 | return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg); |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 224 | } |
| 225 | |
Vadim Yanitskiy | 6170ac0 | 2019-07-24 16:44:13 +0700 | [diff] [blame] | 226 | /* gsm48_mi_to_string() returns number of bytes written, including '\0' */ |
| 227 | rc = gsm48_mi_to_string(imsi, sizeof(imsi), TLVP_VAL(tp, BSSGP_IE_IMSI), |
Pau Espin Pedrol | 5530f12 | 2019-12-10 19:26:27 +0100 | [diff] [blame] | 228 | TLVP_LEN(tp, BSSGP_IE_IMSI)); |
Vadim Yanitskiy | 6170ac0 | 2019-07-24 16:44:13 +0700 | [diff] [blame] | 229 | if (rc != GSM23003_IMSI_MAX_DIGITS + 1) { |
| 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 | } |
| 233 | pgroup = imsi2paging_group(imsi); |
| 234 | if (pgroup > 999) { |
| 235 | LOGP(DBSSGP, LOGL_NOTICE, "Failed to compute IMSI %s paging group\n", imsi); |
| 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 | |
Vadim Yanitskiy | 0b25f69 | 2020-03-26 03:38:05 +0700 | [diff] [blame] | 239 | if ((rc = get_paging_mi(&mi, &mi_len, tp)) > 0) |
| 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 | |
| 242 | return gprs_rlcmac_paging_request(mi, mi_len, 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 | eb64d43 | 2019-05-25 03:10:51 +0200 | [diff] [blame] | 552 | int gprs_bssgp_ns_cb(enum gprs_ns_evt event, struct gprs_nsvc *nsvc, struct msgb *msg, uint16_t bvci) |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 553 | { |
| 554 | int rc = 0; |
| 555 | switch (event) { |
| 556 | case GPRS_NS_EVT_UNIT_DATA: |
| 557 | /* hand the message into the BSSGP implementation */ |
| 558 | rc = gprs_bssgp_pcu_rcvmsg(msg); |
| 559 | break; |
| 560 | default: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 561 | LOGP(DPCU, LOGL_NOTICE, "RLCMAC: Unknown event %u from NS\n", event); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 562 | rc = -EIO; |
| 563 | break; |
| 564 | } |
| 565 | return rc; |
| 566 | } |
| 567 | |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 568 | |
| 569 | static int nsvc_signal_cb(unsigned int subsys, unsigned int signal, |
| 570 | void *handler_data, void *signal_data) |
| 571 | { |
| 572 | struct ns_signal_data *nssd; |
| 573 | |
| 574 | if (subsys != SS_L_NS) |
| 575 | return -EINVAL; |
| 576 | |
| 577 | nssd = (struct ns_signal_data *)signal_data; |
Harald Welte | 57d3515 | 2018-07-05 03:11:17 +0200 | [diff] [blame] | 578 | if (signal != S_SNS_CONFIGURED && nssd->nsvc != the_pcu.nsvc) { |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 579 | LOGP(DPCU, LOGL_ERROR, "Signal received of unknown NSVC\n"); |
| 580 | return -EINVAL; |
| 581 | } |
| 582 | |
| 583 | switch (signal) { |
Harald Welte | 57d3515 | 2018-07-05 03:11:17 +0200 | [diff] [blame] | 584 | case S_SNS_CONFIGURED: |
| 585 | the_pcu.bvc_sig_reset = 0; |
| 586 | the_pcu.bvc_reset = 0; |
| 587 | /* There's no NS-RESET / NS-UNBLOCK procedure on IP SNS based NS-VCs */ |
| 588 | the_pcu.nsvc_unblocked = 1; |
| 589 | LOGP(DPCU, LOGL_NOTICE, "NS-VC %d is unblocked.\n", the_pcu.nsvc->nsvci); |
| 590 | bvc_timeout(NULL); |
| 591 | break; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 592 | case S_NS_UNBLOCK: |
Holger Hans Peter Freyther | 4b984b1 | 2013-07-13 12:57:06 +0200 | [diff] [blame] | 593 | if (!the_pcu.nsvc_unblocked) { |
| 594 | the_pcu.nsvc_unblocked = 1; |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 595 | LOGP(DPCU, LOGL_NOTICE, "NS-VC %d is unblocked.\n", |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 596 | the_pcu.nsvc->nsvci); |
| 597 | the_pcu.bvc_sig_reset = 0; |
| 598 | the_pcu.bvc_reset = 0; |
| 599 | the_pcu.bvc_unblocked = 0; |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 600 | bvc_timeout(NULL); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 601 | } |
| 602 | break; |
| 603 | case S_NS_BLOCK: |
Holger Hans Peter Freyther | 4b984b1 | 2013-07-13 12:57:06 +0200 | [diff] [blame] | 604 | if (the_pcu.nsvc_unblocked) { |
| 605 | the_pcu.nsvc_unblocked = 0; |
Holger Hans Peter Freyther | ed70cb7 | 2013-07-13 12:53:46 +0200 | [diff] [blame] | 606 | osmo_timer_del(&the_pcu.bvc_timer); |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 607 | the_pcu.bvc_sig_reset = 0; |
| 608 | the_pcu.bvc_reset = 0; |
| 609 | the_pcu.bvc_unblocked = 0; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 610 | LOGP(DPCU, LOGL_NOTICE, "NS-VC is blocked.\n"); |
| 611 | } |
| 612 | break; |
Jacob Erlbeck | ebebad1 | 2015-08-17 14:43:52 +0200 | [diff] [blame] | 613 | case S_NS_ALIVE_EXP: |
| 614 | LOGP(DPCU, LOGL_NOTICE, "Tns alive expired too often, " |
| 615 | "re-starting RESET procedure\n"); |
| 616 | gprs_ns_reconnect(nssd->nsvc); |
| 617 | break; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 618 | } |
| 619 | |
| 620 | return 0; |
| 621 | } |
| 622 | |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 623 | static unsigned count_pdch(const struct gprs_rlcmac_bts *bts) |
| 624 | { |
| 625 | size_t trx_no, ts_no; |
| 626 | unsigned num_pdch = 0; |
| 627 | |
| 628 | for (trx_no = 0; trx_no < ARRAY_SIZE(bts->trx); ++trx_no) { |
| 629 | const struct gprs_rlcmac_trx *trx = &bts->trx[trx_no]; |
| 630 | |
| 631 | for (ts_no = 0; ts_no < ARRAY_SIZE(trx->pdch); ++ts_no) { |
| 632 | const struct gprs_rlcmac_pdch *pdch = &trx->pdch[ts_no]; |
| 633 | |
| 634 | if (pdch->is_enabled()) |
| 635 | num_pdch += 1; |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | return num_pdch; |
| 640 | } |
| 641 | |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 642 | static uint32_t gprs_bssgp_max_leak_rate(GprsCodingScheme cs, int num_pdch) |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 643 | { |
Max | 51754b6 | 2019-03-13 17:14:13 +0100 | [diff] [blame] | 644 | int bytes_per_rlc_block = cs.maxDataBlockBytes() * num_data_blocks(cs.headerTypeData()); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 645 | |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 646 | /* n byte payload per 20ms */ |
| 647 | return bytes_per_rlc_block * (1000 / 20) * num_pdch; |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 648 | } |
| 649 | |
| 650 | static uint32_t compute_bucket_size(struct gprs_rlcmac_bts *bts, |
| 651 | uint32_t leak_rate, uint32_t fallback) |
| 652 | { |
| 653 | uint32_t bucket_size = 0; |
Jacob Erlbeck | 0288cdb | 2015-05-06 10:47:30 +0200 | [diff] [blame] | 654 | uint16_t bucket_time = bts->fc_bucket_time; |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 655 | |
Jacob Erlbeck | 0288cdb | 2015-05-06 10:47:30 +0200 | [diff] [blame] | 656 | if (bucket_time == 0) |
| 657 | bucket_time = bts->force_llc_lifetime; |
| 658 | |
| 659 | if (bucket_time == 0xffff) |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 660 | bucket_size = FC_MAX_BUCKET_SIZE; |
| 661 | |
Jacob Erlbeck | 0288cdb | 2015-05-06 10:47:30 +0200 | [diff] [blame] | 662 | if (bucket_size == 0 && bucket_time && leak_rate) |
| 663 | bucket_size = (uint64_t)leak_rate * bucket_time / 100; |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 664 | |
| 665 | if (bucket_size == 0 && leak_rate) |
| 666 | bucket_size = leak_rate * FC_DEFAULT_LIFE_TIME_SECS; |
| 667 | |
| 668 | if (bucket_size == 0) |
| 669 | bucket_size = fallback; |
| 670 | |
| 671 | if (bucket_size > FC_MAX_BUCKET_SIZE) |
| 672 | bucket_size = FC_MAX_BUCKET_SIZE; |
| 673 | |
| 674 | return bucket_size; |
| 675 | } |
| 676 | |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 677 | static uint32_t get_and_reset_avg_queue_delay(void) |
| 678 | { |
Pau Espin Pedrol | 1de6873 | 2020-03-11 14:04:52 +0100 | [diff] [blame] | 679 | struct timespec *delay_sum = &the_pcu.queue_delay_sum; |
Jacob Erlbeck | 0ae4313 | 2015-06-11 12:03:18 +0200 | [diff] [blame] | 680 | uint32_t delay_sum_ms = delay_sum->tv_sec * 1000 + |
Pau Espin Pedrol | 1de6873 | 2020-03-11 14:04:52 +0100 | [diff] [blame] | 681 | delay_sum->tv_nsec / 1000000000; |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 682 | uint32_t avg_delay_ms = 0; |
| 683 | |
| 684 | if (the_pcu.queue_delay_count > 0) |
| 685 | avg_delay_ms = delay_sum_ms / the_pcu.queue_delay_count; |
| 686 | |
| 687 | /* Reset accumulator */ |
Pau Espin Pedrol | 1de6873 | 2020-03-11 14:04:52 +0100 | [diff] [blame] | 688 | delay_sum->tv_sec = delay_sum->tv_nsec = 0; |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 689 | the_pcu.queue_delay_count = 0; |
| 690 | |
| 691 | return avg_delay_ms; |
| 692 | } |
| 693 | |
Jacob Erlbeck | 2db0f08 | 2015-09-07 18:49:00 +0200 | [diff] [blame] | 694 | static int get_and_reset_measured_leak_rate(int *usage_by_1000, unsigned num_pdch) |
| 695 | { |
| 696 | int rate; /* byte per second */ |
| 697 | |
| 698 | if (the_pcu.queue_frames_sent == 0) |
| 699 | return -1; |
| 700 | |
| 701 | if (the_pcu.queue_frames_recv == 0) |
| 702 | return -1; |
| 703 | |
| 704 | *usage_by_1000 = the_pcu.queue_frames_recv * 1000 / |
| 705 | the_pcu.queue_frames_sent; |
| 706 | |
| 707 | /* 20ms/num_pdch is the average RLC block duration, so the rate is |
| 708 | * calculated as: |
| 709 | * rate = bytes_recv / (block_dur * block_count) */ |
| 710 | rate = the_pcu.queue_bytes_recv * 1000 * num_pdch / |
| 711 | (20 * the_pcu.queue_frames_recv); |
| 712 | |
| 713 | the_pcu.queue_frames_sent = 0; |
| 714 | the_pcu.queue_bytes_recv = 0; |
| 715 | the_pcu.queue_frames_recv = 0; |
| 716 | |
| 717 | return rate; |
| 718 | } |
| 719 | |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 720 | static GprsCodingScheme max_coding_scheme_dl(struct gprs_rlcmac_bts *bts) |
| 721 | { |
| 722 | int num; |
| 723 | |
| 724 | if (bts->egprs_enabled) { |
| 725 | if (!bts->cs_adj_enabled) { |
| 726 | if (bts->initial_mcs_dl) |
| 727 | num = bts->initial_mcs_dl; |
| 728 | else |
| 729 | num = 1; |
| 730 | } else if (bts->max_mcs_dl) { |
| 731 | num = bts->max_mcs_dl; |
| 732 | } else { |
| 733 | num = 9; |
| 734 | } |
| 735 | |
| 736 | return GprsCodingScheme::getEgprsByNum(num); |
| 737 | } |
| 738 | |
| 739 | if (!bts->cs_adj_enabled) { |
| 740 | if (bts->initial_cs_dl) |
| 741 | num = bts->initial_cs_dl; |
| 742 | else if (bts->cs4) |
| 743 | num = 4; |
| 744 | else if (bts->cs3) |
| 745 | num = 3; |
| 746 | else if (bts->cs2) |
| 747 | num = 2; |
| 748 | else |
| 749 | num = 1; |
| 750 | } else if (bts->max_cs_dl) { |
| 751 | num = bts->max_cs_dl; |
| 752 | } else { |
| 753 | num = 4; |
| 754 | } |
| 755 | |
| 756 | return GprsCodingScheme::getGprsByNum(num); |
| 757 | } |
| 758 | |
Pau Espin Pedrol | 3f064f5 | 2019-12-10 17:09:51 +0100 | [diff] [blame] | 759 | static int gprs_bssgp_tx_fc_bvc(void) |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 760 | { |
Jacob Erlbeck | 87d7341 | 2015-04-21 12:56:48 +0200 | [diff] [blame] | 761 | struct gprs_rlcmac_bts *bts; |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 762 | uint32_t bucket_size; /* oct */ |
| 763 | uint32_t ms_bucket_size; /* oct */ |
| 764 | uint32_t leak_rate; /* oct/s */ |
| 765 | uint32_t ms_leak_rate; /* oct/s */ |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 766 | uint32_t avg_delay_ms; |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 767 | int num_pdch = -1; |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 768 | GprsCodingScheme max_cs_dl; |
Jacob Erlbeck | 87d7341 | 2015-04-21 12:56:48 +0200 | [diff] [blame] | 769 | |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 770 | if (!the_pcu.bctx) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 771 | LOGP(DBSSGP, LOGL_ERROR, "No bctx\n"); |
| 772 | return -EIO; |
| 773 | } |
Jacob Erlbeck | 87d7341 | 2015-04-21 12:56:48 +0200 | [diff] [blame] | 774 | bts = bts_main_data(); |
| 775 | |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 776 | max_cs_dl = max_coding_scheme_dl(bts); |
Jacob Erlbeck | 6eed191 | 2015-07-21 18:29:46 +0200 | [diff] [blame] | 777 | |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 778 | bucket_size = bts->fc_bvc_bucket_size; |
| 779 | leak_rate = bts->fc_bvc_leak_rate; |
| 780 | ms_bucket_size = bts->fc_ms_bucket_size; |
| 781 | ms_leak_rate = bts->fc_ms_leak_rate; |
| 782 | |
| 783 | if (leak_rate == 0) { |
Jacob Erlbeck | 2db0f08 | 2015-09-07 18:49:00 +0200 | [diff] [blame] | 784 | int meas_rate; |
| 785 | int usage; /* in 0..1000 */ |
| 786 | |
| 787 | if (num_pdch < 0) |
| 788 | num_pdch = count_pdch(bts); |
| 789 | |
| 790 | meas_rate = get_and_reset_measured_leak_rate(&usage, num_pdch); |
| 791 | if (meas_rate > 0) { |
| 792 | leak_rate = gprs_bssgp_max_leak_rate(max_cs_dl, num_pdch); |
| 793 | leak_rate = |
| 794 | (meas_rate * usage + leak_rate * (1000 - usage)) / |
| 795 | 1000; |
| 796 | LOGP(DBSSGP, LOGL_DEBUG, |
| 797 | "Estimated BVC leak rate = %d " |
| 798 | "(measured %d, usage %d%%)\n", |
| 799 | leak_rate, meas_rate, usage/10); |
| 800 | } |
| 801 | } |
| 802 | |
| 803 | if (leak_rate == 0) { |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 804 | if (num_pdch < 0) |
| 805 | num_pdch = count_pdch(bts); |
| 806 | |
Jacob Erlbeck | 6eed191 | 2015-07-21 18:29:46 +0200 | [diff] [blame] | 807 | leak_rate = gprs_bssgp_max_leak_rate(max_cs_dl, num_pdch); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 808 | |
| 809 | LOGP(DBSSGP, LOGL_DEBUG, |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 810 | "Computed BVC leak rate = %d, num_pdch = %d, cs = %s\n", |
Max | 136ebcc | 2019-03-05 14:59:03 +0100 | [diff] [blame] | 811 | leak_rate, num_pdch, mcs_name(max_cs_dl)); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 812 | }; |
| 813 | |
| 814 | if (ms_leak_rate == 0) { |
| 815 | int ms_num_pdch; |
Jacob Erlbeck | 7f79f0d | 2015-07-17 11:38:49 +0200 | [diff] [blame] | 816 | int max_pdch = gprs_alloc_max_dl_slots_per_ms(bts); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 817 | |
| 818 | if (num_pdch < 0) |
| 819 | num_pdch = count_pdch(bts); |
| 820 | |
| 821 | ms_num_pdch = num_pdch; |
Jacob Erlbeck | 7f79f0d | 2015-07-17 11:38:49 +0200 | [diff] [blame] | 822 | if (max_pdch > FC_MS_MAX_RX_SLOTS) |
| 823 | max_pdch = FC_MS_MAX_RX_SLOTS; |
| 824 | if (ms_num_pdch > max_pdch) |
| 825 | ms_num_pdch = max_pdch; |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 826 | |
Jacob Erlbeck | 6eed191 | 2015-07-21 18:29:46 +0200 | [diff] [blame] | 827 | 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] | 828 | |
| 829 | /* TODO: To properly support multiple TRX, the per MS leak rate |
| 830 | * should be derived from the max number of PDCH TS per TRX. |
| 831 | */ |
| 832 | LOGP(DBSSGP, LOGL_DEBUG, |
Jacob Erlbeck | 7f28c97 | 2016-02-04 17:54:42 +0100 | [diff] [blame] | 833 | "Computed MS default leak rate = %d, ms_num_pdch = %d, " |
| 834 | "cs = %s\n", |
Max | 136ebcc | 2019-03-05 14:59:03 +0100 | [diff] [blame] | 835 | ms_leak_rate, ms_num_pdch, mcs_name(max_cs_dl)); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 836 | }; |
| 837 | |
| 838 | /* TODO: Force leak_rate to 0 on buffer bloat */ |
| 839 | |
| 840 | if (bucket_size == 0) |
| 841 | bucket_size = compute_bucket_size(bts, leak_rate, |
| 842 | FC_FALLBACK_BVC_BUCKET_SIZE); |
| 843 | |
| 844 | if (ms_bucket_size == 0) |
| 845 | ms_bucket_size = compute_bucket_size(bts, ms_leak_rate, |
| 846 | FC_MS_BUCKET_SIZE_BY_BMAX(bucket_size)); |
| 847 | |
| 848 | if (leak_rate > FC_MAX_BUCKET_LEAK_RATE) |
| 849 | leak_rate = FC_MAX_BUCKET_LEAK_RATE; |
| 850 | |
| 851 | if (ms_leak_rate > FC_MAX_BUCKET_LEAK_RATE) |
| 852 | ms_leak_rate = FC_MAX_BUCKET_LEAK_RATE; |
| 853 | |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 854 | /* Avg queue delay monitoring */ |
| 855 | avg_delay_ms = get_and_reset_avg_queue_delay(); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 856 | |
Jacob Erlbeck | 6eeb7c7 | 2015-05-06 15:26:08 +0200 | [diff] [blame] | 857 | /* Update tag */ |
| 858 | the_pcu.fc_tag += 1; |
| 859 | |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 860 | LOGP(DBSSGP, LOGL_DEBUG, |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 861 | "Sending FLOW CONTROL BVC, Bmax = %d, R = %d, Bmax_MS = %d, " |
| 862 | "R_MS = %d, avg_dly = %d\n", |
| 863 | bucket_size, leak_rate, ms_bucket_size, ms_leak_rate, |
| 864 | avg_delay_ms); |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 865 | |
Jacob Erlbeck | 6eeb7c7 | 2015-05-06 15:26:08 +0200 | [diff] [blame] | 866 | return bssgp_tx_fc_bvc(the_pcu.bctx, the_pcu.fc_tag, |
Jacob Erlbeck | 3d62fc5 | 2015-04-30 15:01:15 +0200 | [diff] [blame] | 867 | bucket_size, leak_rate, |
| 868 | ms_bucket_size, ms_leak_rate, |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 869 | NULL, &avg_delay_ms); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 870 | } |
| 871 | |
| 872 | static void bvc_timeout(void *_priv) |
| 873 | { |
Pau Espin Pedrol | 5211d9d | 2019-09-05 16:20:22 +0200 | [diff] [blame] | 874 | unsigned long secs; |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 875 | if (!the_pcu.bvc_sig_reset) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 876 | LOGP(DBSSGP, LOGL_INFO, "Sending reset on BVCI 0\n"); |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 877 | 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] | 878 | secs = osmo_tdef_get(the_pcu.bts->T_defs_pcu, 2, OSMO_TDEF_S, -1); |
| 879 | osmo_timer_schedule(&the_pcu.bvc_timer, secs, 0); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 880 | return; |
| 881 | } |
| 882 | |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 883 | if (!the_pcu.bvc_reset) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 884 | LOGP(DBSSGP, LOGL_INFO, "Sending reset on BVCI %d\n", |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 885 | the_pcu.bctx->bvci); |
| 886 | 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] | 887 | secs = osmo_tdef_get(the_pcu.bts->T_defs_pcu, 2, OSMO_TDEF_S, -1); |
| 888 | osmo_timer_schedule(&the_pcu.bvc_timer, secs, 0); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 889 | return; |
| 890 | } |
| 891 | |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 892 | if (!the_pcu.bvc_unblocked) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 893 | LOGP(DBSSGP, LOGL_INFO, "Sending unblock on BVCI %d\n", |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 894 | the_pcu.bctx->bvci); |
| 895 | bssgp_tx_bvc_unblock(the_pcu.bctx); |
Pau Espin Pedrol | 5211d9d | 2019-09-05 16:20:22 +0200 | [diff] [blame] | 896 | secs = osmo_tdef_get(the_pcu.bts->T_defs_pcu, 1, OSMO_TDEF_S, -1); |
| 897 | osmo_timer_schedule(&the_pcu.bvc_timer, secs, 0); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 898 | return; |
| 899 | } |
| 900 | |
| 901 | 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] | 902 | the_pcu.bctx->bvci); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 903 | gprs_bssgp_tx_fc_bvc(); |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 904 | 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] | 905 | } |
| 906 | |
Harald Welte | b26854c | 2019-02-21 17:17:07 +0100 | [diff] [blame] | 907 | static int gprs_ns_reconnect(struct gprs_nsvc *nsvc) |
Jacob Erlbeck | ebebad1 | 2015-08-17 14:43:52 +0200 | [diff] [blame] | 908 | { |
| 909 | struct gprs_nsvc *nsvc2; |
| 910 | |
Jacob Erlbeck | ebebad1 | 2015-08-17 14:43:52 +0200 | [diff] [blame] | 911 | if (nsvc != the_pcu.nsvc) { |
| 912 | LOGP(DBSSGP, LOGL_ERROR, "NSVC is invalid\n"); |
| 913 | return -EBADF; |
| 914 | } |
| 915 | |
Harald Welte | 57d3515 | 2018-07-05 03:11:17 +0200 | [diff] [blame] | 916 | if (the_pcu.bts->gb_dialect_sns) |
| 917 | nsvc2 = gprs_ns_nsip_connect_sns(bssgp_nsi, &nsvc->ip.bts_addr, nsvc->nsei, nsvc->nsvci); |
| 918 | else |
| 919 | nsvc2 = gprs_ns_nsip_connect(bssgp_nsi, &nsvc->ip.bts_addr, nsvc->nsei, nsvc->nsvci); |
Jacob Erlbeck | ebebad1 | 2015-08-17 14:43:52 +0200 | [diff] [blame] | 920 | if (!nsvc2) { |
| 921 | LOGP(DBSSGP, LOGL_ERROR, "Failed to reconnect NSVC\n"); |
| 922 | return -EIO; |
| 923 | } |
| 924 | |
| 925 | return 0; |
| 926 | } |
| 927 | |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 928 | /* create BSSGP/NS layer instances */ |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 929 | struct gprs_bssgp_pcu *gprs_bssgp_create_and_connect(struct gprs_rlcmac_bts *bts, |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 930 | uint16_t local_port, uint32_t sgsn_ip, |
Harald Welte | 30a73d8 | 2013-03-10 08:54:30 +0000 | [diff] [blame] | 931 | uint16_t sgsn_port, uint16_t nsei, uint16_t nsvci, uint16_t bvci, |
Neels Hofmeyr | bdc55fa | 2018-02-21 00:39:07 +0100 | [diff] [blame] | 932 | uint16_t mcc, uint16_t mnc, bool mnc_3_digits, uint16_t lac, uint16_t rac, |
Harald Welte | 30a73d8 | 2013-03-10 08:54:30 +0000 | [diff] [blame] | 933 | uint16_t cell_id) |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 934 | { |
| 935 | struct sockaddr_in dest; |
Andreas Eversberg | a3c12fb | 2012-09-28 22:46:33 +0200 | [diff] [blame] | 936 | int rc; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 937 | |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 938 | /* if already created... return the current address */ |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 939 | if (the_pcu.bctx) |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 940 | return &the_pcu; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 941 | |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 942 | the_pcu.bts = bts; |
| 943 | |
Harald Welte | 57d3515 | 2018-07-05 03:11:17 +0200 | [diff] [blame] | 944 | /* don't specify remote IP/port if SNS dialect is in use; Doing so would |
| 945 | * issue a connect() on the socket, which prevents us to dynamically communicate |
| 946 | * with any number of IP-SNS endpoints on the SGSN side */ |
| 947 | if (!bts->gb_dialect_sns) { |
| 948 | bssgp_nsi->nsip.remote_port = sgsn_port; |
| 949 | bssgp_nsi->nsip.remote_ip = sgsn_ip; |
| 950 | } |
Harald Welte | 30a73d8 | 2013-03-10 08:54:30 +0000 | [diff] [blame] | 951 | bssgp_nsi->nsip.local_port = local_port; |
Andreas Eversberg | a3c12fb | 2012-09-28 22:46:33 +0200 | [diff] [blame] | 952 | rc = gprs_ns_nsip_listen(bssgp_nsi); |
| 953 | if (rc < 0) { |
| 954 | LOGP(DBSSGP, LOGL_ERROR, "Failed to create socket\n"); |
Alexander Couzens | 5c3783b | 2019-05-25 05:41:18 +0200 | [diff] [blame] | 955 | gprs_ns_close(bssgp_nsi); |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 956 | return NULL; |
Andreas Eversberg | a3c12fb | 2012-09-28 22:46:33 +0200 | [diff] [blame] | 957 | } |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 958 | |
| 959 | dest.sin_family = AF_INET; |
| 960 | dest.sin_port = htons(sgsn_port); |
| 961 | dest.sin_addr.s_addr = htonl(sgsn_ip); |
| 962 | |
Harald Welte | 57d3515 | 2018-07-05 03:11:17 +0200 | [diff] [blame] | 963 | if (bts->gb_dialect_sns) |
| 964 | the_pcu.nsvc = gprs_ns_nsip_connect_sns(bssgp_nsi, &dest, nsei, nsvci); |
| 965 | else |
| 966 | the_pcu.nsvc = gprs_ns_nsip_connect(bssgp_nsi, &dest, nsei, nsvci); |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 967 | if (!the_pcu.nsvc) { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 968 | LOGP(DBSSGP, LOGL_ERROR, "Failed to create NSVCt\n"); |
Alexander Couzens | 5c3783b | 2019-05-25 05:41:18 +0200 | [diff] [blame] | 969 | gprs_ns_close(bssgp_nsi); |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 970 | return NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 971 | } |
| 972 | |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 973 | the_pcu.bctx = btsctx_alloc(bvci, nsei); |
| 974 | if (!the_pcu.bctx) { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 975 | LOGP(DBSSGP, LOGL_ERROR, "Failed to create BSSGP context\n"); |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 976 | the_pcu.nsvc = NULL; |
Alexander Couzens | 5c3783b | 2019-05-25 05:41:18 +0200 | [diff] [blame] | 977 | gprs_ns_close(bssgp_nsi); |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 978 | return NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 979 | } |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 980 | the_pcu.bctx->ra_id.mcc = spoof_mcc ? : mcc; |
Neels Hofmeyr | bdc55fa | 2018-02-21 00:39:07 +0100 | [diff] [blame] | 981 | if (spoof_mnc) { |
| 982 | the_pcu.bctx->ra_id.mnc = spoof_mnc; |
| 983 | the_pcu.bctx->ra_id.mnc_3_digits = spoof_mnc_3_digits; |
| 984 | } else { |
| 985 | the_pcu.bctx->ra_id.mnc = mnc; |
| 986 | the_pcu.bctx->ra_id.mnc_3_digits = mnc_3_digits; |
| 987 | } |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 988 | the_pcu.bctx->ra_id.lac = lac; |
| 989 | the_pcu.bctx->ra_id.rac = rac; |
| 990 | the_pcu.bctx->cell_id = cell_id; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 991 | |
| 992 | osmo_signal_register_handler(SS_L_NS, nsvc_signal_cb, NULL); |
| 993 | |
Pau Espin Pedrol | a8892a6 | 2019-09-05 16:21:04 +0200 | [diff] [blame] | 994 | osmo_timer_setup(&the_pcu.bvc_timer, bvc_timeout, NULL); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 995 | |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 996 | return &the_pcu; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 997 | } |
| 998 | |
Daniel Willmann | 6d8884d | 2014-06-04 18:30:59 +0200 | [diff] [blame] | 999 | void gprs_bssgp_destroy(void) |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1000 | { |
Jacob Erlbeck | c362df2 | 2016-01-20 22:02:19 +0100 | [diff] [blame] | 1001 | struct gprs_ns_inst *nsi = bssgp_nsi; |
| 1002 | if (!nsi) |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1003 | return; |
| 1004 | |
Jacob Erlbeck | c362df2 | 2016-01-20 22:02:19 +0100 | [diff] [blame] | 1005 | bssgp_nsi = NULL; |
| 1006 | |
Holger Hans Peter Freyther | ed70cb7 | 2013-07-13 12:53:46 +0200 | [diff] [blame] | 1007 | osmo_timer_del(&the_pcu.bvc_timer); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 1008 | |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1009 | osmo_signal_unregister_handler(SS_L_NS, nsvc_signal_cb, NULL); |
| 1010 | |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 1011 | the_pcu.nsvc = NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1012 | |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1013 | /* FIXME: blocking... */ |
Holger Hans Peter Freyther | 40bd0c4 | 2013-07-13 12:58:20 +0200 | [diff] [blame] | 1014 | the_pcu.nsvc_unblocked = 0; |
| 1015 | the_pcu.bvc_sig_reset = 0; |
| 1016 | the_pcu.bvc_reset = 0; |
Pau Espin Pedrol | 3f064f5 | 2019-12-10 17:09:51 +0100 | [diff] [blame] | 1017 | the_pcu.bvc_unblocked = 0; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1018 | |
Jacob Erlbeck | c362df2 | 2016-01-20 22:02:19 +0100 | [diff] [blame] | 1019 | gprs_ns_destroy(nsi); |
| 1020 | |
Vadim Yanitskiy | 0bf622e | 2019-11-09 01:57:17 +0700 | [diff] [blame] | 1021 | bssgp_bvc_ctx_free(the_pcu.bctx); |
Jacob Erlbeck | c362df2 | 2016-01-20 22:02:19 +0100 | [diff] [blame] | 1022 | the_pcu.bctx = NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 1023 | } |
| 1024 | |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 1025 | struct bssgp_bvc_ctx *gprs_bssgp_pcu_current_bctx(void) |
| 1026 | { |
| 1027 | return the_pcu.bctx; |
| 1028 | } |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 1029 | |
Jacob Erlbeck | 2db0f08 | 2015-09-07 18:49:00 +0200 | [diff] [blame] | 1030 | void gprs_bssgp_update_frames_sent() |
| 1031 | { |
| 1032 | the_pcu.queue_frames_sent += 1; |
| 1033 | } |
| 1034 | |
| 1035 | void gprs_bssgp_update_bytes_received(unsigned bytes_recv, unsigned frames_recv) |
| 1036 | { |
| 1037 | the_pcu.queue_bytes_recv += bytes_recv; |
| 1038 | the_pcu.queue_frames_recv += frames_recv; |
| 1039 | } |
| 1040 | |
Pau Espin Pedrol | 1de6873 | 2020-03-11 14:04:52 +0100 | [diff] [blame] | 1041 | void gprs_bssgp_update_queue_delay(const struct timespec *tv_recv, |
| 1042 | const struct timespec *tv_now) |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 1043 | { |
Pau Espin Pedrol | 1de6873 | 2020-03-11 14:04:52 +0100 | [diff] [blame] | 1044 | struct timespec *delay_sum = &the_pcu.queue_delay_sum; |
| 1045 | struct timespec tv_delay; |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 1046 | |
Pau Espin Pedrol | 1de6873 | 2020-03-11 14:04:52 +0100 | [diff] [blame] | 1047 | timespecsub(tv_now, tv_recv, &tv_delay); |
| 1048 | timespecadd(delay_sum, &tv_delay, delay_sum); |
Jacob Erlbeck | 6e4ccec | 2015-05-06 14:24:36 +0200 | [diff] [blame] | 1049 | |
| 1050 | the_pcu.queue_delay_count += 1; |
| 1051 | } |