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> |
| 24 | |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 25 | static struct gprs_bssgp_pcu the_pcu = { 0, }; |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 26 | |
Andreas Eversberg | 71cce91 | 2013-01-16 13:49:00 +0100 | [diff] [blame] | 27 | extern void *tall_pcu_ctx; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 28 | extern uint16_t spoof_mcc, spoof_mnc; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 29 | |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 30 | static void bvc_timeout(void *_priv); |
| 31 | |
Andreas Eversberg | 0095074 | 2012-10-08 12:25:55 +0200 | [diff] [blame] | 32 | static int parse_imsi(struct tlv_parsed *tp, char *imsi) |
| 33 | { |
| 34 | uint8_t imsi_len; |
| 35 | uint8_t *bcd_imsi; |
| 36 | int i, j; |
| 37 | |
| 38 | if (!TLVP_PRESENT(tp, BSSGP_IE_IMSI)) |
| 39 | return -EINVAL; |
| 40 | |
| 41 | imsi_len = TLVP_LEN(tp, BSSGP_IE_IMSI); |
| 42 | bcd_imsi = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_IMSI); |
| 43 | |
| 44 | if ((bcd_imsi[0] & 0x08)) |
| 45 | imsi_len = imsi_len * 2 - 1; |
| 46 | else |
| 47 | imsi_len = (imsi_len - 1) * 2; |
| 48 | for (i = 0, j = 0; j < imsi_len && j < 15; j++) |
| 49 | { |
| 50 | if (!(j & 1)) { |
| 51 | imsi[j] = (bcd_imsi[i] >> 4) + '0'; |
| 52 | i++; |
| 53 | } else |
| 54 | imsi[j] = (bcd_imsi[i] & 0xf) + '0'; |
| 55 | } |
| 56 | imsi[j] = '\0'; |
| 57 | |
| 58 | return 0; |
| 59 | } |
| 60 | |
Holger Hans Peter Freyther | 98fe945 | 2013-07-13 15:23:58 +0200 | [diff] [blame] | 61 | static int parse_ra_cap_ms_class(struct tlv_parsed *tp) |
| 62 | { |
| 63 | bitvec *block; |
| 64 | unsigned rp = 0; |
| 65 | uint8_t ms_class = 0; |
| 66 | uint8_t cap_len; |
| 67 | uint8_t *cap; |
| 68 | |
| 69 | if (!TLVP_PRESENT(tp, BSSGP_IE_MS_RADIO_ACCESS_CAP)) |
| 70 | return ms_class; |
| 71 | |
| 72 | cap_len = TLVP_LEN(tp, BSSGP_IE_MS_RADIO_ACCESS_CAP); |
| 73 | cap = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_MS_RADIO_ACCESS_CAP); |
| 74 | |
| 75 | block = bitvec_alloc(cap_len); |
| 76 | bitvec_unpack(block, cap); |
| 77 | bitvec_read_field(block, rp, 4); // Access Technology Type |
| 78 | bitvec_read_field(block, rp, 7); // Length of Access Capabilities |
| 79 | bitvec_read_field(block, rp, 3); // RF Power Capability |
| 80 | if (bitvec_read_field(block, rp, 1)) // A5 Bits Present |
| 81 | bitvec_read_field(block, rp, 7); // A5 Bits |
| 82 | bitvec_read_field(block, rp, 1); // ES IND |
| 83 | bitvec_read_field(block, rp, 1); // PS |
| 84 | bitvec_read_field(block, rp, 1); // VGCS |
| 85 | bitvec_read_field(block, rp, 1); // VBS |
| 86 | if (bitvec_read_field(block, rp, 1)) { // Multislot Cap Present |
| 87 | if (bitvec_read_field(block, rp, 1)) // HSCSD Present |
| 88 | bitvec_read_field(block, rp, 5); // Class |
| 89 | if (bitvec_read_field(block, rp, 1)) { // GPRS Present |
| 90 | ms_class = bitvec_read_field(block, rp, 5); // Class |
| 91 | bitvec_read_field(block, rp, 1); // Ext. |
| 92 | } |
| 93 | if (bitvec_read_field(block, rp, 1)) // SMS Present |
| 94 | bitvec_read_field(block, rp, 4); // SMS Value |
| 95 | bitvec_read_field(block, rp, 4); // SMS Value |
| 96 | } |
| 97 | |
| 98 | bitvec_free(block); |
| 99 | return ms_class; |
| 100 | } |
| 101 | |
Holger Hans Peter Freyther | 90d5df4 | 2013-07-28 21:14:15 +0200 | [diff] [blame] | 102 | 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] | 103 | { |
| 104 | struct bssgp_ud_hdr *budh; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 105 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 106 | int8_t tfi; /* must be signed */ |
Ivan Kluchnikov | 9eb552b | 2012-10-05 18:17:57 +0400 | [diff] [blame] | 107 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 108 | uint32_t tlli; |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 109 | uint8_t *data; |
| 110 | uint16_t len; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 111 | struct gprs_rlcmac_tbf *tbf; |
Andreas Eversberg | 0095074 | 2012-10-08 12:25:55 +0200 | [diff] [blame] | 112 | char imsi[16] = "000"; |
Andreas Eversberg | 7d7cf54 | 2012-06-25 09:26:15 +0200 | [diff] [blame] | 113 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 114 | budh = (struct bssgp_ud_hdr *)msgb_bssgph(msg); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 115 | tlli = ntohl(budh->tlli); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 116 | |
Ivan Kluchnikov | 5e0df93 | 2012-06-12 15:33:52 +0400 | [diff] [blame] | 117 | /* LLC_PDU is mandatory IE */ |
| 118 | if (!TLVP_PRESENT(tp, BSSGP_IE_LLC_PDU)) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 119 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 120 | 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] | 121 | return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg); |
| 122 | } |
Ivan Kluchnikov | b172b1b | 2012-06-07 01:51:49 +0400 | [diff] [blame] | 123 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 124 | data = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_LLC_PDU); |
| 125 | len = TLVP_LEN(tp, BSSGP_IE_LLC_PDU); |
| 126 | if (len > sizeof(tbf->llc_frame)) |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 127 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 128 | 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] | 129 | return bssgp_tx_status(BSSGP_CAUSE_COND_IE_ERR, NULL, msg); |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 130 | } |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 131 | |
Andreas Eversberg | e13fa2d | 2012-07-09 17:10:44 +0200 | [diff] [blame] | 132 | /* read IMSI. if no IMSI exists, use first paging block (any paging), |
| 133 | * because during attachment the IMSI might not be known, so the MS |
| 134 | * will listen to all paging blocks. */ |
Andreas Eversberg | 0095074 | 2012-10-08 12:25:55 +0200 | [diff] [blame] | 135 | parse_imsi(tp, imsi); |
Andreas Eversberg | 51ab134 | 2012-07-13 14:52:50 +0200 | [diff] [blame] | 136 | |
| 137 | /* parse ms radio access capability */ |
Holger Hans Peter Freyther | 98fe945 | 2013-07-13 15:23:58 +0200 | [diff] [blame] | 138 | uint8_t ms_class = parse_ra_cap_ms_class(tp); |
Andreas Eversberg | 51ab134 | 2012-07-13 14:52:50 +0200 | [diff] [blame] | 139 | |
Andreas Eversberg | 24131bf | 2012-07-21 11:09:58 +0200 | [diff] [blame] | 140 | /* get lifetime */ |
| 141 | uint16_t delay_csec = 0xffff; |
| 142 | if (TLVP_PRESENT(tp, BSSGP_IE_PDU_LIFETIME)) |
| 143 | { |
| 144 | uint8_t lt_len = TLVP_LEN(tp, BSSGP_IE_PDU_LIFETIME); |
| 145 | uint16_t *lt = (uint16_t *) TLVP_VAL(tp, BSSGP_IE_PDU_LIFETIME); |
| 146 | if (lt_len == 2) |
| 147 | delay_csec = ntohs(*lt); |
| 148 | else |
| 149 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP invalid length of " |
| 150 | "PDU_LIFETIME IE\n"); |
| 151 | } else |
| 152 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP missing mandatory " |
| 153 | "PDU_LIFETIME IE\n"); |
| 154 | |
Andreas Eversberg | e13fa2d | 2012-07-09 17:10:44 +0200 | [diff] [blame] | 155 | 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] | 156 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 157 | /* check for existing TBF */ |
| 158 | if ((tbf = tbf_by_tlli(tlli, GPRS_RLCMAC_DL_TBF))) { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 159 | LOGP(DRLCMAC, LOGL_INFO, "TBF: APPEND TFI: %u TLLI: 0x%08x\n", tbf->tfi, tbf->tlli); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 160 | if (tbf->state == GPRS_RLCMAC_WAIT_RELEASE) { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 161 | LOGP(DRLCMAC, LOGL_DEBUG, "TBF in WAIT RELEASE state " |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 162 | "(T3193), so reuse TBF\n"); |
| 163 | memcpy(tbf->llc_frame, data, len); |
| 164 | tbf->llc_length = len; |
| 165 | memset(&tbf->dir.dl, 0, sizeof(tbf->dir.dl)); /* reset |
| 166 | rlc states */ |
Andreas Eversberg | a9be154 | 2012-09-27 09:23:24 +0200 | [diff] [blame] | 167 | tbf->state_flags &= GPRS_RLCMAC_FLAG_TO_MASK; /* keep |
| 168 | to flags */ |
| 169 | tbf->state_flags &= ~(1 << GPRS_RLCMAC_FLAG_CCCH); |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 170 | if (!tbf->ms_class && ms_class) |
| 171 | tbf->ms_class = ms_class; |
| 172 | tbf_update(tbf); |
Andreas Eversberg | 7f5352c | 2012-07-23 18:20:36 +0200 | [diff] [blame] | 173 | gprs_rlcmac_trigger_downlink_assignment(tbf, tbf, NULL); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 174 | } else { |
Andreas Eversberg | 24131bf | 2012-07-21 11:09:58 +0200 | [diff] [blame] | 175 | /* the TBF exists, so we must write it in the queue |
| 176 | * we prepend lifetime in front of PDU */ |
Andreas Eversberg | 24131bf | 2012-07-21 11:09:58 +0200 | [diff] [blame] | 177 | struct timeval *tv; |
| 178 | struct msgb *llc_msg = msgb_alloc(len + sizeof(*tv), |
| 179 | "llc_pdu_queue"); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 180 | if (!llc_msg) |
| 181 | return -ENOMEM; |
Andreas Eversberg | 24131bf | 2012-07-21 11:09:58 +0200 | [diff] [blame] | 182 | tv = (struct timeval *)msgb_put(llc_msg, sizeof(*tv)); |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 183 | if (the_pcu.bts->force_llc_lifetime) |
| 184 | delay_csec = the_pcu.bts->force_llc_lifetime; |
Andreas Eversberg | 24131bf | 2012-07-21 11:09:58 +0200 | [diff] [blame] | 185 | /* keep timestap at 0 for infinite delay */ |
| 186 | if (delay_csec != 0xffff) { |
| 187 | /* calculate timestamp of timeout */ |
| 188 | gettimeofday(tv, NULL); |
| 189 | tv->tv_usec += (delay_csec % 100) * 10000; |
| 190 | tv->tv_sec += delay_csec / 100; |
| 191 | if (tv->tv_usec > 999999) { |
| 192 | tv->tv_usec -= 1000000; |
| 193 | tv->tv_sec++; |
| 194 | } |
| 195 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 196 | memcpy(msgb_put(llc_msg, len), data, len); |
| 197 | msgb_enqueue(&tbf->llc_queue, llc_msg); |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 198 | /* set ms class for updating TBF */ |
| 199 | if (!tbf->ms_class && ms_class) |
| 200 | tbf->ms_class = ms_class; |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 201 | } |
| 202 | } else { |
Andreas Eversberg | 02d7cd2 | 2013-01-15 08:59:34 +0100 | [diff] [blame] | 203 | uint8_t trx, ta, ss; |
| 204 | int8_t use_trx; |
Andreas Eversberg | 7f5352c | 2012-07-23 18:20:36 +0200 | [diff] [blame] | 205 | struct gprs_rlcmac_tbf *old_tbf; |
Andreas Eversberg | a004e6a | 2013-05-13 16:45:21 +0200 | [diff] [blame] | 206 | int rc; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 207 | |
| 208 | /* check for uplink data, so we copy our informations */ |
Andreas Eversberg | 7f5352c | 2012-07-23 18:20:36 +0200 | [diff] [blame] | 209 | tbf = tbf_by_tlli(tlli, GPRS_RLCMAC_UL_TBF); |
Andreas Eversberg | 08e93cd | 2012-07-26 08:13:06 +0200 | [diff] [blame] | 210 | if (tbf && tbf->dir.ul.contention_resolution_done |
| 211 | && !tbf->dir.ul.final_ack_sent) { |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 212 | use_trx = tbf->trx; |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 213 | ta = tbf->ta; |
| 214 | ss = 0; |
Andreas Eversberg | 7f5352c | 2012-07-23 18:20:36 +0200 | [diff] [blame] | 215 | old_tbf = tbf; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 216 | } else { |
| 217 | use_trx = -1; |
Andreas Eversberg | a004e6a | 2013-05-13 16:45:21 +0200 | [diff] [blame] | 218 | /* we already have an uplink TBF, so we use that TA */ |
| 219 | if (tbf) |
| 220 | ta = tbf->ta; |
| 221 | else { |
| 222 | /* recall TA */ |
| 223 | rc = recall_timing_advance(tlli); |
| 224 | if (rc < 0) { |
| 225 | LOGP(DRLCMAC, LOGL_NOTICE, "TA unknown" |
| 226 | ", assuming 0\n"); |
| 227 | ta = 0; |
| 228 | } else |
| 229 | ta = rc; |
| 230 | } |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 231 | ss = 1; /* PCH assignment only allows one timeslot */ |
Andreas Eversberg | 7f5352c | 2012-07-23 18:20:36 +0200 | [diff] [blame] | 232 | old_tbf = NULL; |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | // Create new TBF (any TRX) |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 236 | tfi = tfi_alloc(the_pcu.bts, GPRS_RLCMAC_DL_TBF, &trx, use_trx); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 237 | if (tfi < 0) { |
Holger Hans Peter Freyther | 1115f59 | 2012-07-23 10:27:30 +0200 | [diff] [blame] | 238 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH resource\n"); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 239 | /* FIXME: send reject */ |
| 240 | return -EBUSY; |
| 241 | } |
Andreas Eversberg | 51ab134 | 2012-07-13 14:52:50 +0200 | [diff] [blame] | 242 | /* set number of downlink slots according to multislot class */ |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 243 | tbf = tbf_alloc(the_pcu.bts, tbf, GPRS_RLCMAC_DL_TBF, tfi, trx, ms_class, |
Andreas Eversberg | 592e04a | 2012-07-15 06:25:37 +0200 | [diff] [blame] | 244 | ss); |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 245 | if (!tbf) { |
| 246 | LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH ressource\n"); |
| 247 | /* FIXME: send reject */ |
| 248 | return -EBUSY; |
| 249 | } |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 250 | tbf->tlli = tlli; |
| 251 | tbf->tlli_valid = 1; |
Andreas Eversberg | 06f96cd | 2012-07-15 07:12:36 +0200 | [diff] [blame] | 252 | tbf->ta = ta; |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 253 | |
Andreas Eversberg | b0c7ea7 | 2012-07-13 14:46:03 +0200 | [diff] [blame] | 254 | LOGP(DRLCMAC, LOGL_DEBUG, "TBF: [DOWNLINK] START TFI: %d TLLI: 0x%08x \n", tbf->tfi, tbf->tlli); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 255 | |
| 256 | /* new TBF, so put first frame */ |
| 257 | memcpy(tbf->llc_frame, data, len); |
| 258 | tbf->llc_length = len; |
| 259 | |
| 260 | /* trigger downlink assignment and set state to ASSIGN. |
| 261 | * we don't use old_downlink, so the possible uplink is used |
| 262 | * to trigger downlink assignment. if there is no uplink, |
| 263 | * AGCH is used. */ |
Andreas Eversberg | 7f5352c | 2012-07-23 18:20:36 +0200 | [diff] [blame] | 264 | gprs_rlcmac_trigger_downlink_assignment(tbf, old_tbf, imsi); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 265 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 266 | |
Andreas Eversberg | 050ace2 | 2013-03-16 16:22:02 +0100 | [diff] [blame] | 267 | /* store IMSI for debugging purpose */ |
| 268 | strncpy(tbf->meas.imsi, imsi, sizeof(tbf->meas.imsi) - 1); |
| 269 | |
Andreas Eversberg | 5dac2f0 | 2012-06-27 15:52:04 +0200 | [diff] [blame] | 270 | return 0; |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 271 | } |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 272 | |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 273 | int gprs_bssgp_pcu_rx_paging_ps(struct msgb *msg, struct tlv_parsed *tp) |
| 274 | { |
| 275 | char imsi[16]; |
| 276 | uint8_t *ptmsi = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_TMSI); |
| 277 | uint16_t ptmsi_len = TLVP_LEN(tp, BSSGP_IE_TMSI); |
| 278 | |
| 279 | LOGP(DBSSGP, LOGL_NOTICE, " P-TMSI = "); |
| 280 | for (int i = 0; i < ptmsi_len; i++) |
| 281 | { |
| 282 | LOGPC(DBSSGP, LOGL_NOTICE, "%02x", ptmsi[i]); |
| 283 | } |
| 284 | LOGPC(DBSSGP, LOGL_NOTICE, "\n"); |
| 285 | |
| 286 | if (parse_imsi(tp, imsi)) |
| 287 | { |
| 288 | LOGP(DBSSGP, LOGL_ERROR, "No IMSI\n"); |
| 289 | return -EINVAL; |
| 290 | } |
| 291 | |
| 292 | return gprs_rlcmac_paging_request(ptmsi, ptmsi_len, imsi); |
| 293 | } |
| 294 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 295 | /* 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] | 296 | 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] | 297 | { |
| 298 | struct bssgp_normal_hdr *bgph = (struct bssgp_normal_hdr *) msgb_bssgph(msg); |
| 299 | uint8_t pdu_type = bgph->pdu_type; |
| 300 | unsigned rc = 0; |
| 301 | |
Andreas Eversberg | ba1cd9b | 2012-07-25 09:14:09 +0200 | [diff] [blame] | 302 | if (!bctx) |
| 303 | return -EINVAL; |
| 304 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 305 | /* If traffic is received on a BVC that is marked as blocked, the |
| 306 | * received PDU shall not be accepted and a STATUS PDU (Cause value: |
| 307 | * BVC Blocked) shall be sent to the peer entity on the signalling BVC */ |
| 308 | if (bctx->state & BVC_S_BLOCKED && pdu_type != BSSGP_PDUT_STATUS) |
| 309 | { |
| 310 | uint16_t bvci = msgb_bvci(msg); |
| 311 | LOGP(DBSSGP, LOGL_NOTICE, "rx BVC_S_BLOCKED\n"); |
| 312 | return bssgp_tx_status(BSSGP_CAUSE_BVCI_BLOCKED, &bvci, msg); |
| 313 | } |
| 314 | |
| 315 | switch (pdu_type) { |
| 316 | case BSSGP_PDUT_DL_UNITDATA: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 317 | LOGP(DBSSGP, LOGL_DEBUG, "RX: [SGSN->PCU] BSSGP_PDUT_DL_UNITDATA\n"); |
Holger Hans Peter Freyther | 416ce69 | 2013-08-22 08:44:04 +0200 | [diff] [blame^] | 318 | if (the_pcu.on_dl_unit_data) |
| 319 | the_pcu.on_dl_unit_data(&the_pcu, msg, tp); |
Ivan Kluchnikov | 5e0df93 | 2012-06-12 15:33:52 +0400 | [diff] [blame] | 320 | gprs_bssgp_pcu_rx_dl_ud(msg, tp); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 321 | break; |
| 322 | case BSSGP_PDUT_PAGING_PS: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 323 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_PAGING_PS\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 324 | break; |
| 325 | case BSSGP_PDUT_PAGING_CS: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 326 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_PAGING_CS\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 327 | break; |
| 328 | case BSSGP_PDUT_RA_CAPA_UPDATE_ACK: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 329 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_RA_CAPA_UPDATE_ACK\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 330 | break; |
| 331 | case BSSGP_PDUT_FLOW_CONTROL_BVC_ACK: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 332 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_FLOW_CONTROL_BVC_ACK\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 333 | break; |
| 334 | case BSSGP_PDUT_FLOW_CONTROL_MS_ACK: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 335 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_FLOW_CONTROL_MS_ACK\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 336 | break; |
| 337 | default: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 338 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP BVCI=%u PDU type 0x%02x unknown\n", bctx->bvci, pdu_type); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 339 | rc = bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg); |
| 340 | break; |
| 341 | } |
| 342 | return rc; |
| 343 | } |
| 344 | |
| 345 | /* 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] | 346 | 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] | 347 | { |
| 348 | struct bssgp_normal_hdr *bgph = (struct bssgp_normal_hdr *) msgb_bssgph(msg); |
| 349 | int rc = 0; |
| 350 | switch (bgph->pdu_type) { |
| 351 | case BSSGP_PDUT_STATUS: |
| 352 | /* Some exception has occurred */ |
| 353 | DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx BVC STATUS\n", bctx->bvci); |
| 354 | /* FIXME: send NM_STATUS.ind to NM */ |
| 355 | break; |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 356 | case BSSGP_PDUT_SUSPEND_ACK: |
| 357 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_SUSPEND_ACK\n"); |
| 358 | break; |
| 359 | case BSSGP_PDUT_SUSPEND_NACK: |
| 360 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_SUSPEND_NACK\n"); |
| 361 | break; |
| 362 | case BSSGP_PDUT_BVC_RESET_ACK: |
| 363 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_BVC_RESET_ACK\n"); |
| 364 | if (!the_pcu.bvc_sig_reset) |
| 365 | the_pcu.bvc_sig_reset = 1; |
| 366 | else |
| 367 | the_pcu.bvc_reset = 1; |
| 368 | bvc_timeout(NULL); |
| 369 | break; |
| 370 | case BSSGP_PDUT_PAGING_PS: |
| 371 | LOGP(DBSSGP, LOGL_NOTICE, "RX: [SGSN->PCU] BSSGP_PDUT_PAGING_PS\n"); |
| 372 | gprs_bssgp_pcu_rx_paging_ps(msg, tp); |
| 373 | break; |
| 374 | case BSSGP_PDUT_PAGING_CS: |
| 375 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_PAGING_CS\n"); |
| 376 | break; |
| 377 | case BSSGP_PDUT_RESUME_ACK: |
| 378 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_RESUME_ACK\n"); |
| 379 | break; |
| 380 | case BSSGP_PDUT_RESUME_NACK: |
| 381 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_RESUME_NACK\n"); |
| 382 | break; |
| 383 | case BSSGP_PDUT_FLUSH_LL: |
| 384 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_FLUSH_LL\n"); |
| 385 | break; |
| 386 | case BSSGP_PDUT_BVC_BLOCK_ACK: |
| 387 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_SUSPEND_ACK\n"); |
| 388 | break; |
| 389 | case BSSGP_PDUT_BVC_UNBLOCK_ACK: |
| 390 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_BVC_UNBLOCK_ACK\n"); |
| 391 | the_pcu.bvc_unblocked = 1; |
Holger Hans Peter Freyther | c0f1644 | 2013-08-22 08:40:33 +0200 | [diff] [blame] | 392 | if (the_pcu.on_unblock_ack) |
| 393 | the_pcu.on_unblock_ack(&the_pcu); |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 394 | bvc_timeout(NULL); |
| 395 | break; |
| 396 | case BSSGP_PDUT_SGSN_INVOKE_TRACE: |
| 397 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_SGSN_INVOKE_TRACE\n"); |
| 398 | break; |
| 399 | default: |
| 400 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP BVCI=%u Rx PDU type 0x%02x unknown\n", bctx->bvci, bgph->pdu_type); |
| 401 | rc = bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg); |
| 402 | break; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 403 | } |
| 404 | return rc; |
| 405 | } |
| 406 | |
Holger Hans Peter Freyther | 90d5df4 | 2013-07-28 21:14:15 +0200 | [diff] [blame] | 407 | static int gprs_bssgp_pcu_rcvmsg(struct msgb *msg) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 408 | { |
| 409 | struct bssgp_normal_hdr *bgph = (struct bssgp_normal_hdr *) msgb_bssgph(msg); |
| 410 | struct bssgp_ud_hdr *budh = (struct bssgp_ud_hdr *) msgb_bssgph(msg); |
| 411 | struct tlv_parsed tp; |
| 412 | uint8_t pdu_type = bgph->pdu_type; |
| 413 | uint16_t ns_bvci = msgb_bvci(msg); |
| 414 | int data_len; |
| 415 | int rc = 0; |
Andreas Eversberg | 3e372d5 | 2012-07-06 09:28:15 +0200 | [diff] [blame] | 416 | struct bssgp_bvc_ctx *bctx; |
| 417 | |
| 418 | if (pdu_type == BSSGP_PDUT_STATUS) { |
| 419 | LOGP(DBSSGP, LOGL_NOTICE, "NSEI=%u/BVCI=%u received STATUS\n", |
| 420 | msgb_nsei(msg), ns_bvci); |
| 421 | return 0; |
| 422 | } |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 423 | |
| 424 | /* Identifiers from DOWN: NSEI, BVCI (both in msg->cb) */ |
| 425 | |
| 426 | /* UNITDATA BSSGP headers have TLLI in front */ |
| 427 | if (pdu_type != BSSGP_PDUT_UL_UNITDATA && pdu_type != BSSGP_PDUT_DL_UNITDATA) |
| 428 | { |
| 429 | data_len = msgb_bssgp_len(msg) - sizeof(*bgph); |
| 430 | rc = bssgp_tlv_parse(&tp, bgph->data, data_len); |
| 431 | } |
| 432 | else |
| 433 | { |
| 434 | data_len = msgb_bssgp_len(msg) - sizeof(*budh); |
| 435 | rc = bssgp_tlv_parse(&tp, budh->data, data_len); |
| 436 | } |
| 437 | |
| 438 | /* look-up or create the BTS context for this BVC */ |
| 439 | bctx = btsctx_by_bvci_nsei(ns_bvci, msgb_nsei(msg)); |
| 440 | |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 441 | if (!bctx |
| 442 | && pdu_type != BSSGP_PDUT_BVC_RESET_ACK |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 443 | && pdu_type != BSSGP_PDUT_BVC_UNBLOCK_ACK |
| 444 | && pdu_type != BSSGP_PDUT_PAGING_PS) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 445 | { |
| 446 | LOGP(DBSSGP, LOGL_NOTICE, "NSEI=%u/BVCI=%u Rejecting PDU " |
| 447 | "type %u for unknown BVCI\n", msgb_nsei(msg), ns_bvci, |
| 448 | pdu_type); |
| 449 | return bssgp_tx_status(BSSGP_CAUSE_UNKNOWN_BVCI, NULL, msg); |
| 450 | } |
| 451 | |
| 452 | if (bctx) |
| 453 | { |
| 454 | log_set_context(BSC_CTX_BVC, bctx); |
| 455 | rate_ctr_inc(&bctx->ctrg->ctr[BSSGP_CTR_PKTS_IN]); |
| 456 | rate_ctr_add(&bctx->ctrg->ctr[BSSGP_CTR_BYTES_IN], msgb_bssgp_len(msg)); |
| 457 | } |
| 458 | |
| 459 | if (ns_bvci == BVCI_SIGNALLING) |
| 460 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 461 | LOGP(DBSSGP, LOGL_DEBUG, "rx BVCI_SIGNALLING gprs_bssgp_rx_sign\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 462 | rc = gprs_bssgp_pcu_rx_sign(msg, &tp, bctx); |
| 463 | } |
| 464 | else if (ns_bvci == BVCI_PTM) |
| 465 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 466 | LOGP(DBSSGP, LOGL_DEBUG, "rx BVCI_PTM bssgp_tx_status\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 467 | rc = bssgp_tx_status(BSSGP_CAUSE_PDU_INCOMP_FEAT, NULL, msg); |
| 468 | } |
| 469 | else |
| 470 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 471 | LOGP(DBSSGP, LOGL_DEBUG, "rx BVCI_PTP gprs_bssgp_rx_ptp\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 472 | rc = gprs_bssgp_pcu_rx_ptp(msg, &tp, bctx); |
| 473 | } |
| 474 | return rc; |
| 475 | } |
Harald Welte | 477e79e | 2012-06-18 12:21:03 +0800 | [diff] [blame] | 476 | |
| 477 | int bssgp_prim_cb(struct osmo_prim_hdr *oph, void *ctx) |
| 478 | { |
| 479 | return 0; |
| 480 | } |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 481 | |
| 482 | static int sgsn_ns_cb(enum gprs_ns_evt event, struct gprs_nsvc *nsvc, struct msgb *msg, uint16_t bvci) |
| 483 | { |
| 484 | int rc = 0; |
| 485 | switch (event) { |
| 486 | case GPRS_NS_EVT_UNIT_DATA: |
| 487 | /* hand the message into the BSSGP implementation */ |
| 488 | rc = gprs_bssgp_pcu_rcvmsg(msg); |
| 489 | break; |
| 490 | default: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 491 | LOGP(DPCU, LOGL_NOTICE, "RLCMAC: Unknown event %u from NS\n", event); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 492 | rc = -EIO; |
| 493 | break; |
| 494 | } |
| 495 | return rc; |
| 496 | } |
| 497 | |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 498 | |
| 499 | static int nsvc_signal_cb(unsigned int subsys, unsigned int signal, |
| 500 | void *handler_data, void *signal_data) |
| 501 | { |
| 502 | struct ns_signal_data *nssd; |
| 503 | |
| 504 | if (subsys != SS_L_NS) |
| 505 | return -EINVAL; |
| 506 | |
| 507 | nssd = (struct ns_signal_data *)signal_data; |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 508 | if (nssd->nsvc != the_pcu.nsvc) { |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 509 | LOGP(DPCU, LOGL_ERROR, "Signal received of unknown NSVC\n"); |
| 510 | return -EINVAL; |
| 511 | } |
| 512 | |
| 513 | switch (signal) { |
| 514 | case S_NS_UNBLOCK: |
Holger Hans Peter Freyther | 4b984b1 | 2013-07-13 12:57:06 +0200 | [diff] [blame] | 515 | if (!the_pcu.nsvc_unblocked) { |
| 516 | the_pcu.nsvc_unblocked = 1; |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 517 | LOGP(DPCU, LOGL_NOTICE, "NS-VC %d is unblocked.\n", |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 518 | the_pcu.nsvc->nsvci); |
| 519 | the_pcu.bvc_sig_reset = 0; |
| 520 | the_pcu.bvc_reset = 0; |
| 521 | the_pcu.bvc_unblocked = 0; |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 522 | bvc_timeout(NULL); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 523 | } |
| 524 | break; |
| 525 | case S_NS_BLOCK: |
Holger Hans Peter Freyther | 4b984b1 | 2013-07-13 12:57:06 +0200 | [diff] [blame] | 526 | if (the_pcu.nsvc_unblocked) { |
| 527 | the_pcu.nsvc_unblocked = 0; |
Holger Hans Peter Freyther | ed70cb7 | 2013-07-13 12:53:46 +0200 | [diff] [blame] | 528 | osmo_timer_del(&the_pcu.bvc_timer); |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 529 | the_pcu.bvc_sig_reset = 0; |
| 530 | the_pcu.bvc_reset = 0; |
| 531 | the_pcu.bvc_unblocked = 0; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 532 | LOGP(DPCU, LOGL_NOTICE, "NS-VC is blocked.\n"); |
| 533 | } |
| 534 | break; |
| 535 | } |
| 536 | |
| 537 | return 0; |
| 538 | } |
| 539 | |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 540 | int gprs_bssgp_tx_fc_bvc(void) |
| 541 | { |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 542 | if (!the_pcu.bctx) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 543 | LOGP(DBSSGP, LOGL_ERROR, "No bctx\n"); |
| 544 | return -EIO; |
| 545 | } |
| 546 | /* FIXME: use real values */ |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 547 | return bssgp_tx_fc_bvc(the_pcu.bctx, 1, 6553500, 819100, 50000, 50000, |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 548 | NULL, NULL); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 549 | } |
| 550 | |
| 551 | static void bvc_timeout(void *_priv) |
| 552 | { |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 553 | if (!the_pcu.bvc_sig_reset) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 554 | LOGP(DBSSGP, LOGL_INFO, "Sending reset on BVCI 0\n"); |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 555 | bssgp_tx_bvc_reset(the_pcu.bctx, 0, BSSGP_CAUSE_OML_INTERV); |
Holger Hans Peter Freyther | ed70cb7 | 2013-07-13 12:53:46 +0200 | [diff] [blame] | 556 | osmo_timer_schedule(&the_pcu.bvc_timer, 1, 0); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 557 | return; |
| 558 | } |
| 559 | |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 560 | if (!the_pcu.bvc_reset) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 561 | LOGP(DBSSGP, LOGL_INFO, "Sending reset on BVCI %d\n", |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 562 | the_pcu.bctx->bvci); |
| 563 | bssgp_tx_bvc_reset(the_pcu.bctx, the_pcu.bctx->bvci, BSSGP_CAUSE_OML_INTERV); |
Holger Hans Peter Freyther | ed70cb7 | 2013-07-13 12:53:46 +0200 | [diff] [blame] | 564 | osmo_timer_schedule(&the_pcu.bvc_timer, 1, 0); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 565 | return; |
| 566 | } |
| 567 | |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 568 | if (!the_pcu.bvc_unblocked) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 569 | LOGP(DBSSGP, LOGL_INFO, "Sending unblock on BVCI %d\n", |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 570 | the_pcu.bctx->bvci); |
| 571 | bssgp_tx_bvc_unblock(the_pcu.bctx); |
Holger Hans Peter Freyther | ed70cb7 | 2013-07-13 12:53:46 +0200 | [diff] [blame] | 572 | osmo_timer_schedule(&the_pcu.bvc_timer, 1, 0); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 573 | return; |
| 574 | } |
| 575 | |
| 576 | 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] | 577 | the_pcu.bctx->bvci); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 578 | gprs_bssgp_tx_fc_bvc(); |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 579 | 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] | 580 | } |
| 581 | |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 582 | /* create BSSGP/NS layer instances */ |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 583 | 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] | 584 | uint16_t local_port, uint32_t sgsn_ip, |
Harald Welte | 30a73d8 | 2013-03-10 08:54:30 +0000 | [diff] [blame] | 585 | uint16_t sgsn_port, uint16_t nsei, uint16_t nsvci, uint16_t bvci, |
| 586 | uint16_t mcc, uint16_t mnc, uint16_t lac, uint16_t rac, |
| 587 | uint16_t cell_id) |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 588 | { |
| 589 | struct sockaddr_in dest; |
Andreas Eversberg | a3c12fb | 2012-09-28 22:46:33 +0200 | [diff] [blame] | 590 | int rc; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 591 | |
Andreas Eversberg | 514491d | 2012-09-23 06:42:07 +0200 | [diff] [blame] | 592 | mcc = ((mcc & 0xf00) >> 8) * 100 + ((mcc & 0x0f0) >> 4) * 10 + (mcc & 0x00f); |
| 593 | mnc = ((mnc & 0xf00) >> 8) * 100 + ((mnc & 0x0f0) >> 4) * 10 + (mnc & 0x00f); |
| 594 | cell_id = ntohs(cell_id); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 595 | |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 596 | /* if already created... return the current address */ |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 597 | if (the_pcu.bctx) |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 598 | return &the_pcu; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 599 | |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 600 | the_pcu.bts = bts; |
| 601 | |
Andreas Eversberg | 71cce91 | 2013-01-16 13:49:00 +0100 | [diff] [blame] | 602 | bssgp_nsi = gprs_ns_instantiate(&sgsn_ns_cb, tall_pcu_ctx); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 603 | if (!bssgp_nsi) { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 604 | LOGP(DBSSGP, LOGL_ERROR, "Failed to create NS instance\n"); |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 605 | return NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 606 | } |
Harald Welte | de5253a | 2013-01-11 09:45:17 +0100 | [diff] [blame] | 607 | gprs_ns_vty_init(bssgp_nsi); |
Harald Welte | 30a73d8 | 2013-03-10 08:54:30 +0000 | [diff] [blame] | 608 | bssgp_nsi->nsip.local_port = local_port; |
Andreas Eversberg | a3c12fb | 2012-09-28 22:46:33 +0200 | [diff] [blame] | 609 | rc = gprs_ns_nsip_listen(bssgp_nsi); |
| 610 | if (rc < 0) { |
| 611 | LOGP(DBSSGP, LOGL_ERROR, "Failed to create socket\n"); |
| 612 | gprs_ns_destroy(bssgp_nsi); |
| 613 | bssgp_nsi = NULL; |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 614 | return NULL; |
Andreas Eversberg | a3c12fb | 2012-09-28 22:46:33 +0200 | [diff] [blame] | 615 | } |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 616 | |
| 617 | dest.sin_family = AF_INET; |
| 618 | dest.sin_port = htons(sgsn_port); |
| 619 | dest.sin_addr.s_addr = htonl(sgsn_ip); |
| 620 | |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 621 | the_pcu.nsvc = gprs_ns_nsip_connect(bssgp_nsi, &dest, nsei, nsvci); |
| 622 | if (!the_pcu.nsvc) { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 623 | LOGP(DBSSGP, LOGL_ERROR, "Failed to create NSVCt\n"); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 624 | gprs_ns_destroy(bssgp_nsi); |
| 625 | bssgp_nsi = NULL; |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 626 | return NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 627 | } |
| 628 | |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 629 | the_pcu.bctx = btsctx_alloc(bvci, nsei); |
| 630 | if (!the_pcu.bctx) { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 631 | LOGP(DBSSGP, LOGL_ERROR, "Failed to create BSSGP context\n"); |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 632 | the_pcu.nsvc = NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 633 | gprs_ns_destroy(bssgp_nsi); |
| 634 | bssgp_nsi = NULL; |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 635 | return NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 636 | } |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 637 | the_pcu.bctx->ra_id.mcc = spoof_mcc ? : mcc; |
| 638 | the_pcu.bctx->ra_id.mnc = spoof_mnc ? : mnc; |
| 639 | the_pcu.bctx->ra_id.lac = lac; |
| 640 | the_pcu.bctx->ra_id.rac = rac; |
| 641 | the_pcu.bctx->cell_id = cell_id; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 642 | |
| 643 | osmo_signal_register_handler(SS_L_NS, nsvc_signal_cb, NULL); |
| 644 | |
Holger Hans Peter Freyther | ed70cb7 | 2013-07-13 12:53:46 +0200 | [diff] [blame] | 645 | the_pcu.bvc_timer.cb = bvc_timeout; |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 646 | |
| 647 | |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 648 | return &the_pcu; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 649 | } |
| 650 | |
Holger Hans Peter Freyther | a30f476 | 2013-07-11 16:13:38 +0200 | [diff] [blame] | 651 | void gprs_bssgp_destroy_or_exit(void) |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 652 | { |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 653 | if (the_pcu.exit_on_destroy) { |
Holger Hans Peter Freyther | a30f476 | 2013-07-11 16:13:38 +0200 | [diff] [blame] | 654 | LOGP(DBSSGP, LOGL_NOTICE, "Exiting on BSSGP destruction.\n"); |
| 655 | exit(0); |
| 656 | } |
| 657 | |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 658 | if (!bssgp_nsi) |
| 659 | return; |
| 660 | |
Holger Hans Peter Freyther | ed70cb7 | 2013-07-13 12:53:46 +0200 | [diff] [blame] | 661 | osmo_timer_del(&the_pcu.bvc_timer); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 662 | |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 663 | osmo_signal_unregister_handler(SS_L_NS, nsvc_signal_cb, NULL); |
| 664 | |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 665 | the_pcu.nsvc = NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 666 | |
| 667 | /* FIXME: move this to libgb: btsctx_free() */ |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 668 | llist_del(&the_pcu.bctx->list); |
| 669 | talloc_free(the_pcu.bctx); |
| 670 | the_pcu.bctx = NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 671 | |
| 672 | /* FIXME: blocking... */ |
Holger Hans Peter Freyther | 40bd0c4 | 2013-07-13 12:58:20 +0200 | [diff] [blame] | 673 | the_pcu.nsvc_unblocked = 0; |
| 674 | the_pcu.bvc_sig_reset = 0; |
| 675 | the_pcu.bvc_reset = 0; |
| 676 | the_pcu.bvc_unblocked = 0; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 677 | |
| 678 | gprs_ns_destroy(bssgp_nsi); |
| 679 | bssgp_nsi = NULL; |
| 680 | } |
| 681 | |
Holger Hans Peter Freyther | a30f476 | 2013-07-11 16:13:38 +0200 | [diff] [blame] | 682 | void gprs_bssgp_exit_on_destroy(void) |
| 683 | { |
| 684 | LOGP(DBSSGP, LOGL_NOTICE, "Going to quit on BSSGP destruction\n"); |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 685 | the_pcu.exit_on_destroy = 1; |
Holger Hans Peter Freyther | a30f476 | 2013-07-11 16:13:38 +0200 | [diff] [blame] | 686 | } |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 687 | |
| 688 | struct bssgp_bvc_ctx *gprs_bssgp_pcu_current_bctx(void) |
| 689 | { |
| 690 | return the_pcu.bctx; |
| 691 | } |