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> |
Holger Hans Peter Freyther | 67ed34e | 2013-10-17 17:01:54 +0200 | [diff] [blame] | 24 | #include <bts.h> |
Holger Hans Peter Freyther | 17c31ce | 2013-08-24 18:31:27 +0200 | [diff] [blame] | 25 | #include <tbf.h> |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 26 | |
Jacob Erlbeck | 1e96af6 | 2015-03-17 08:11:25 +0100 | [diff] [blame] | 27 | #define BSSGP_TIMER_T1 30 /* Guards the (un)blocking procedures */ |
| 28 | #define BSSGP_TIMER_T2 30 /* Guards the reset procedure */ |
| 29 | |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 30 | static struct gprs_bssgp_pcu the_pcu = { 0, }; |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 31 | |
Andreas Eversberg | 71cce91 | 2013-01-16 13:49:00 +0100 | [diff] [blame] | 32 | extern void *tall_pcu_ctx; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 33 | extern uint16_t spoof_mcc, spoof_mnc; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 34 | |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 35 | static void bvc_timeout(void *_priv); |
| 36 | |
Andreas Eversberg | 0095074 | 2012-10-08 12:25:55 +0200 | [diff] [blame] | 37 | static int parse_imsi(struct tlv_parsed *tp, char *imsi) |
| 38 | { |
| 39 | uint8_t imsi_len; |
| 40 | uint8_t *bcd_imsi; |
| 41 | int i, j; |
| 42 | |
| 43 | if (!TLVP_PRESENT(tp, BSSGP_IE_IMSI)) |
| 44 | return -EINVAL; |
| 45 | |
| 46 | imsi_len = TLVP_LEN(tp, BSSGP_IE_IMSI); |
| 47 | bcd_imsi = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_IMSI); |
| 48 | |
| 49 | if ((bcd_imsi[0] & 0x08)) |
| 50 | imsi_len = imsi_len * 2 - 1; |
| 51 | else |
| 52 | imsi_len = (imsi_len - 1) * 2; |
| 53 | for (i = 0, j = 0; j < imsi_len && j < 15; j++) |
| 54 | { |
| 55 | if (!(j & 1)) { |
| 56 | imsi[j] = (bcd_imsi[i] >> 4) + '0'; |
| 57 | i++; |
| 58 | } else |
| 59 | imsi[j] = (bcd_imsi[i] & 0xf) + '0'; |
| 60 | } |
| 61 | imsi[j] = '\0'; |
| 62 | |
| 63 | return 0; |
| 64 | } |
| 65 | |
Holger Hans Peter Freyther | 98fe945 | 2013-07-13 15:23:58 +0200 | [diff] [blame] | 66 | static int parse_ra_cap_ms_class(struct tlv_parsed *tp) |
| 67 | { |
| 68 | bitvec *block; |
| 69 | unsigned rp = 0; |
| 70 | uint8_t ms_class = 0; |
| 71 | uint8_t cap_len; |
| 72 | uint8_t *cap; |
| 73 | |
| 74 | if (!TLVP_PRESENT(tp, BSSGP_IE_MS_RADIO_ACCESS_CAP)) |
| 75 | return ms_class; |
| 76 | |
| 77 | cap_len = TLVP_LEN(tp, BSSGP_IE_MS_RADIO_ACCESS_CAP); |
| 78 | cap = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_MS_RADIO_ACCESS_CAP); |
| 79 | |
| 80 | block = bitvec_alloc(cap_len); |
| 81 | bitvec_unpack(block, cap); |
| 82 | bitvec_read_field(block, rp, 4); // Access Technology Type |
| 83 | bitvec_read_field(block, rp, 7); // Length of Access Capabilities |
| 84 | bitvec_read_field(block, rp, 3); // RF Power Capability |
| 85 | if (bitvec_read_field(block, rp, 1)) // A5 Bits Present |
| 86 | bitvec_read_field(block, rp, 7); // A5 Bits |
| 87 | bitvec_read_field(block, rp, 1); // ES IND |
| 88 | bitvec_read_field(block, rp, 1); // PS |
| 89 | bitvec_read_field(block, rp, 1); // VGCS |
| 90 | bitvec_read_field(block, rp, 1); // VBS |
| 91 | if (bitvec_read_field(block, rp, 1)) { // Multislot Cap Present |
| 92 | if (bitvec_read_field(block, rp, 1)) // HSCSD Present |
| 93 | bitvec_read_field(block, rp, 5); // Class |
| 94 | if (bitvec_read_field(block, rp, 1)) { // GPRS Present |
| 95 | ms_class = bitvec_read_field(block, rp, 5); // Class |
| 96 | bitvec_read_field(block, rp, 1); // Ext. |
| 97 | } |
| 98 | if (bitvec_read_field(block, rp, 1)) // SMS Present |
| 99 | bitvec_read_field(block, rp, 4); // SMS Value |
Holger Hans Peter Freyther | 98fe945 | 2013-07-13 15:23:58 +0200 | [diff] [blame] | 100 | } |
| 101 | |
| 102 | bitvec_free(block); |
| 103 | return ms_class; |
| 104 | } |
| 105 | |
Holger Hans Peter Freyther | 90d5df4 | 2013-07-28 21:14:15 +0200 | [diff] [blame] | 106 | 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] | 107 | { |
| 108 | struct bssgp_ud_hdr *budh; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 109 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 110 | uint32_t tlli; |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 111 | uint8_t *data; |
| 112 | uint16_t len; |
Andreas Eversberg | 0095074 | 2012-10-08 12:25:55 +0200 | [diff] [blame] | 113 | char imsi[16] = "000"; |
Andreas Eversberg | 7d7cf54 | 2012-06-25 09:26:15 +0200 | [diff] [blame] | 114 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 115 | budh = (struct bssgp_ud_hdr *)msgb_bssgph(msg); |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 116 | tlli = ntohl(budh->tlli); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 117 | |
Ivan Kluchnikov | 5e0df93 | 2012-06-12 15:33:52 +0400 | [diff] [blame] | 118 | /* LLC_PDU is mandatory IE */ |
| 119 | if (!TLVP_PRESENT(tp, BSSGP_IE_LLC_PDU)) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 120 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 121 | 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] | 122 | return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg); |
| 123 | } |
Ivan Kluchnikov | b172b1b | 2012-06-07 01:51:49 +0400 | [diff] [blame] | 124 | |
Andreas Eversberg | e6228b3 | 2012-07-03 13:36:03 +0200 | [diff] [blame] | 125 | data = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_LLC_PDU); |
| 126 | len = TLVP_LEN(tp, BSSGP_IE_LLC_PDU); |
Holger Hans Peter Freyther | 28e5378 | 2013-11-06 20:23:56 +0100 | [diff] [blame] | 127 | if (len > sizeof(gprs_llc::frame)) |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 128 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 129 | 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] | 130 | return bssgp_tx_status(BSSGP_CAUSE_COND_IE_ERR, NULL, msg); |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 131 | } |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 132 | |
Andreas Eversberg | e13fa2d | 2012-07-09 17:10:44 +0200 | [diff] [blame] | 133 | /* read IMSI. if no IMSI exists, use first paging block (any paging), |
| 134 | * because during attachment the IMSI might not be known, so the MS |
| 135 | * will listen to all paging blocks. */ |
Andreas Eversberg | 0095074 | 2012-10-08 12:25:55 +0200 | [diff] [blame] | 136 | parse_imsi(tp, imsi); |
Andreas Eversberg | 51ab134 | 2012-07-13 14:52:50 +0200 | [diff] [blame] | 137 | |
| 138 | /* parse ms radio access capability */ |
Holger Hans Peter Freyther | 98fe945 | 2013-07-13 15:23:58 +0200 | [diff] [blame] | 139 | uint8_t ms_class = parse_ra_cap_ms_class(tp); |
Andreas Eversberg | 51ab134 | 2012-07-13 14:52:50 +0200 | [diff] [blame] | 140 | |
Andreas Eversberg | 24131bf | 2012-07-21 11:09:58 +0200 | [diff] [blame] | 141 | /* get lifetime */ |
| 142 | uint16_t delay_csec = 0xffff; |
| 143 | if (TLVP_PRESENT(tp, BSSGP_IE_PDU_LIFETIME)) |
| 144 | { |
| 145 | uint8_t lt_len = TLVP_LEN(tp, BSSGP_IE_PDU_LIFETIME); |
| 146 | uint16_t *lt = (uint16_t *) TLVP_VAL(tp, BSSGP_IE_PDU_LIFETIME); |
| 147 | if (lt_len == 2) |
| 148 | delay_csec = ntohs(*lt); |
| 149 | else |
| 150 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP invalid length of " |
| 151 | "PDU_LIFETIME IE\n"); |
| 152 | } else |
| 153 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP missing mandatory " |
| 154 | "PDU_LIFETIME IE\n"); |
| 155 | |
Andreas Eversberg | e13fa2d | 2012-07-09 17:10:44 +0200 | [diff] [blame] | 156 | 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] | 157 | |
Daniel Willmann | 3016888 | 2014-08-07 12:48:29 +0200 | [diff] [blame] | 158 | return gprs_rlcmac_dl_tbf::handle(the_pcu.bts, tlli, imsi, ms_class, delay_csec, data, len); |
Ivan Kluchnikov | c7e7f68 | 2012-06-29 22:53:15 +0400 | [diff] [blame] | 159 | } |
Ivan Kluchnikov | a9e6dc5 | 2012-06-17 08:30:06 +0400 | [diff] [blame] | 160 | |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 161 | int gprs_bssgp_pcu_rx_paging_ps(struct msgb *msg, struct tlv_parsed *tp) |
| 162 | { |
| 163 | char imsi[16]; |
| 164 | uint8_t *ptmsi = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_TMSI); |
| 165 | uint16_t ptmsi_len = TLVP_LEN(tp, BSSGP_IE_TMSI); |
| 166 | |
| 167 | LOGP(DBSSGP, LOGL_NOTICE, " P-TMSI = "); |
| 168 | for (int i = 0; i < ptmsi_len; i++) |
| 169 | { |
| 170 | LOGPC(DBSSGP, LOGL_NOTICE, "%02x", ptmsi[i]); |
| 171 | } |
| 172 | LOGPC(DBSSGP, LOGL_NOTICE, "\n"); |
| 173 | |
| 174 | if (parse_imsi(tp, imsi)) |
| 175 | { |
| 176 | LOGP(DBSSGP, LOGL_ERROR, "No IMSI\n"); |
| 177 | return -EINVAL; |
| 178 | } |
| 179 | |
| 180 | return gprs_rlcmac_paging_request(ptmsi, ptmsi_len, imsi); |
| 181 | } |
| 182 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 183 | /* 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] | 184 | 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] | 185 | { |
| 186 | struct bssgp_normal_hdr *bgph = (struct bssgp_normal_hdr *) msgb_bssgph(msg); |
| 187 | uint8_t pdu_type = bgph->pdu_type; |
| 188 | unsigned rc = 0; |
| 189 | |
Andreas Eversberg | ba1cd9b | 2012-07-25 09:14:09 +0200 | [diff] [blame] | 190 | if (!bctx) |
| 191 | return -EINVAL; |
| 192 | |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 193 | /* If traffic is received on a BVC that is marked as blocked, the |
| 194 | * received PDU shall not be accepted and a STATUS PDU (Cause value: |
| 195 | * BVC Blocked) shall be sent to the peer entity on the signalling BVC */ |
| 196 | if (bctx->state & BVC_S_BLOCKED && pdu_type != BSSGP_PDUT_STATUS) |
| 197 | { |
| 198 | uint16_t bvci = msgb_bvci(msg); |
| 199 | LOGP(DBSSGP, LOGL_NOTICE, "rx BVC_S_BLOCKED\n"); |
| 200 | return bssgp_tx_status(BSSGP_CAUSE_BVCI_BLOCKED, &bvci, msg); |
| 201 | } |
| 202 | |
| 203 | switch (pdu_type) { |
| 204 | case BSSGP_PDUT_DL_UNITDATA: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 205 | 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] | 206 | if (the_pcu.on_dl_unit_data) |
| 207 | the_pcu.on_dl_unit_data(&the_pcu, msg, tp); |
Ivan Kluchnikov | 5e0df93 | 2012-06-12 15:33:52 +0400 | [diff] [blame] | 208 | gprs_bssgp_pcu_rx_dl_ud(msg, tp); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 209 | break; |
| 210 | case BSSGP_PDUT_PAGING_PS: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 211 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_PAGING_PS\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 212 | break; |
| 213 | case BSSGP_PDUT_PAGING_CS: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 214 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_PAGING_CS\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 215 | break; |
| 216 | case BSSGP_PDUT_RA_CAPA_UPDATE_ACK: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 217 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_RA_CAPA_UPDATE_ACK\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 218 | break; |
| 219 | case BSSGP_PDUT_FLOW_CONTROL_BVC_ACK: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 220 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_FLOW_CONTROL_BVC_ACK\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 221 | break; |
| 222 | case BSSGP_PDUT_FLOW_CONTROL_MS_ACK: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 223 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_FLOW_CONTROL_MS_ACK\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 224 | break; |
| 225 | default: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 226 | 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] | 227 | rc = bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg); |
| 228 | break; |
| 229 | } |
| 230 | return rc; |
| 231 | } |
| 232 | |
| 233 | /* 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] | 234 | 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] | 235 | { |
| 236 | struct bssgp_normal_hdr *bgph = (struct bssgp_normal_hdr *) msgb_bssgph(msg); |
| 237 | int rc = 0; |
| 238 | switch (bgph->pdu_type) { |
| 239 | case BSSGP_PDUT_STATUS: |
| 240 | /* Some exception has occurred */ |
| 241 | DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx BVC STATUS\n", bctx->bvci); |
| 242 | /* FIXME: send NM_STATUS.ind to NM */ |
| 243 | break; |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 244 | case BSSGP_PDUT_SUSPEND_ACK: |
| 245 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_SUSPEND_ACK\n"); |
| 246 | break; |
| 247 | case BSSGP_PDUT_SUSPEND_NACK: |
| 248 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_SUSPEND_NACK\n"); |
| 249 | break; |
| 250 | case BSSGP_PDUT_BVC_RESET_ACK: |
| 251 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_BVC_RESET_ACK\n"); |
| 252 | if (!the_pcu.bvc_sig_reset) |
| 253 | the_pcu.bvc_sig_reset = 1; |
| 254 | else |
| 255 | the_pcu.bvc_reset = 1; |
| 256 | bvc_timeout(NULL); |
| 257 | break; |
| 258 | case BSSGP_PDUT_PAGING_PS: |
| 259 | LOGP(DBSSGP, LOGL_NOTICE, "RX: [SGSN->PCU] BSSGP_PDUT_PAGING_PS\n"); |
| 260 | gprs_bssgp_pcu_rx_paging_ps(msg, tp); |
| 261 | break; |
| 262 | case BSSGP_PDUT_PAGING_CS: |
| 263 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_PAGING_CS\n"); |
| 264 | break; |
| 265 | case BSSGP_PDUT_RESUME_ACK: |
| 266 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_RESUME_ACK\n"); |
| 267 | break; |
| 268 | case BSSGP_PDUT_RESUME_NACK: |
| 269 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_RESUME_NACK\n"); |
| 270 | break; |
| 271 | case BSSGP_PDUT_FLUSH_LL: |
| 272 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_FLUSH_LL\n"); |
| 273 | break; |
| 274 | case BSSGP_PDUT_BVC_BLOCK_ACK: |
| 275 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_SUSPEND_ACK\n"); |
| 276 | break; |
| 277 | case BSSGP_PDUT_BVC_UNBLOCK_ACK: |
| 278 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_BVC_UNBLOCK_ACK\n"); |
| 279 | the_pcu.bvc_unblocked = 1; |
Holger Hans Peter Freyther | c0f1644 | 2013-08-22 08:40:33 +0200 | [diff] [blame] | 280 | if (the_pcu.on_unblock_ack) |
| 281 | the_pcu.on_unblock_ack(&the_pcu); |
Holger Hans Peter Freyther | a9744de | 2013-07-28 19:01:20 +0200 | [diff] [blame] | 282 | bvc_timeout(NULL); |
| 283 | break; |
| 284 | case BSSGP_PDUT_SGSN_INVOKE_TRACE: |
| 285 | LOGP(DBSSGP, LOGL_DEBUG, "rx BSSGP_PDUT_SGSN_INVOKE_TRACE\n"); |
| 286 | break; |
| 287 | default: |
| 288 | LOGP(DBSSGP, LOGL_NOTICE, "BSSGP BVCI=%u Rx PDU type 0x%02x unknown\n", bctx->bvci, bgph->pdu_type); |
| 289 | rc = bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg); |
| 290 | break; |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 291 | } |
| 292 | return rc; |
| 293 | } |
| 294 | |
Holger Hans Peter Freyther | 90d5df4 | 2013-07-28 21:14:15 +0200 | [diff] [blame] | 295 | static int gprs_bssgp_pcu_rcvmsg(struct msgb *msg) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 296 | { |
| 297 | struct bssgp_normal_hdr *bgph = (struct bssgp_normal_hdr *) msgb_bssgph(msg); |
| 298 | struct bssgp_ud_hdr *budh = (struct bssgp_ud_hdr *) msgb_bssgph(msg); |
| 299 | struct tlv_parsed tp; |
| 300 | uint8_t pdu_type = bgph->pdu_type; |
| 301 | uint16_t ns_bvci = msgb_bvci(msg); |
| 302 | int data_len; |
| 303 | int rc = 0; |
Andreas Eversberg | 3e372d5 | 2012-07-06 09:28:15 +0200 | [diff] [blame] | 304 | struct bssgp_bvc_ctx *bctx; |
| 305 | |
Jacob Erlbeck | 39645b8 | 2015-03-16 12:27:11 +0100 | [diff] [blame] | 306 | if (pdu_type == BSSGP_PDUT_STATUS) |
| 307 | /* Pass the message to the generic BSSGP parser, which handles |
| 308 | * STATUS message in either direction. */ |
| 309 | return bssgp_rcvmsg(msg); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 310 | |
| 311 | /* Identifiers from DOWN: NSEI, BVCI (both in msg->cb) */ |
| 312 | |
| 313 | /* UNITDATA BSSGP headers have TLLI in front */ |
| 314 | if (pdu_type != BSSGP_PDUT_UL_UNITDATA && pdu_type != BSSGP_PDUT_DL_UNITDATA) |
| 315 | { |
| 316 | data_len = msgb_bssgp_len(msg) - sizeof(*bgph); |
| 317 | rc = bssgp_tlv_parse(&tp, bgph->data, data_len); |
| 318 | } |
| 319 | else |
| 320 | { |
| 321 | data_len = msgb_bssgp_len(msg) - sizeof(*budh); |
| 322 | rc = bssgp_tlv_parse(&tp, budh->data, data_len); |
| 323 | } |
| 324 | |
| 325 | /* look-up or create the BTS context for this BVC */ |
| 326 | bctx = btsctx_by_bvci_nsei(ns_bvci, msgb_nsei(msg)); |
| 327 | |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 328 | if (!bctx |
| 329 | && pdu_type != BSSGP_PDUT_BVC_RESET_ACK |
Andreas Eversberg | 8c3680d | 2012-10-08 12:30:56 +0200 | [diff] [blame] | 330 | && pdu_type != BSSGP_PDUT_BVC_UNBLOCK_ACK |
| 331 | && pdu_type != BSSGP_PDUT_PAGING_PS) |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 332 | { |
| 333 | LOGP(DBSSGP, LOGL_NOTICE, "NSEI=%u/BVCI=%u Rejecting PDU " |
| 334 | "type %u for unknown BVCI\n", msgb_nsei(msg), ns_bvci, |
| 335 | pdu_type); |
| 336 | return bssgp_tx_status(BSSGP_CAUSE_UNKNOWN_BVCI, NULL, msg); |
| 337 | } |
| 338 | |
| 339 | if (bctx) |
| 340 | { |
| 341 | log_set_context(BSC_CTX_BVC, bctx); |
| 342 | rate_ctr_inc(&bctx->ctrg->ctr[BSSGP_CTR_PKTS_IN]); |
| 343 | rate_ctr_add(&bctx->ctrg->ctr[BSSGP_CTR_BYTES_IN], msgb_bssgp_len(msg)); |
| 344 | } |
| 345 | |
| 346 | if (ns_bvci == BVCI_SIGNALLING) |
| 347 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 348 | LOGP(DBSSGP, LOGL_DEBUG, "rx BVCI_SIGNALLING gprs_bssgp_rx_sign\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 349 | rc = gprs_bssgp_pcu_rx_sign(msg, &tp, bctx); |
| 350 | } |
| 351 | else if (ns_bvci == BVCI_PTM) |
| 352 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 353 | LOGP(DBSSGP, LOGL_DEBUG, "rx BVCI_PTM bssgp_tx_status\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 354 | rc = bssgp_tx_status(BSSGP_CAUSE_PDU_INCOMP_FEAT, NULL, msg); |
| 355 | } |
| 356 | else |
| 357 | { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 358 | LOGP(DBSSGP, LOGL_DEBUG, "rx BVCI_PTP gprs_bssgp_rx_ptp\n"); |
Ivan Kluchnikov | 8ee6051 | 2012-03-05 19:24:57 +0400 | [diff] [blame] | 359 | rc = gprs_bssgp_pcu_rx_ptp(msg, &tp, bctx); |
| 360 | } |
| 361 | return rc; |
| 362 | } |
Harald Welte | 477e79e | 2012-06-18 12:21:03 +0800 | [diff] [blame] | 363 | |
Jacob Erlbeck | 39645b8 | 2015-03-16 12:27:11 +0100 | [diff] [blame] | 364 | static void handle_nm_status(struct osmo_bssgp_prim *bp) |
| 365 | { |
| 366 | enum gprs_bssgp_cause cause; |
| 367 | |
| 368 | LOGP(DPCU, LOGL_DEBUG, |
| 369 | "Got NM-STATUS.ind, BVCI=%d, NSEI=%d\n", |
| 370 | bp->bvci, bp->nsei); |
| 371 | |
| 372 | if (!TLVP_PRESENT(bp->tp, BSSGP_IE_CAUSE)) |
| 373 | return; |
| 374 | |
| 375 | cause = (enum gprs_bssgp_cause)*TLVP_VAL(bp->tp, BSSGP_IE_CAUSE); |
| 376 | |
| 377 | if (cause != BSSGP_CAUSE_BVCI_BLOCKED && |
| 378 | cause != BSSGP_CAUSE_UNKNOWN_BVCI) |
| 379 | return; |
| 380 | |
| 381 | if (!TLVP_PRESENT(bp->tp, BSSGP_IE_BVCI)) |
| 382 | return; |
| 383 | |
| 384 | if (gprs_bssgp_pcu_current_bctx()->bvci != bp->bvci) { |
| 385 | LOGP(DPCU, LOGL_NOTICE, |
| 386 | "Received BSSGP STATUS message for an unknown BVCI (%d), " |
| 387 | "ignored\n", |
| 388 | bp->bvci); |
| 389 | return; |
| 390 | } |
| 391 | |
| 392 | switch (cause) { |
| 393 | case BSSGP_CAUSE_BVCI_BLOCKED: |
| 394 | if (the_pcu.bvc_unblocked) { |
| 395 | the_pcu.bvc_unblocked = 0; |
| 396 | bvc_timeout(NULL); |
| 397 | } |
| 398 | break; |
| 399 | |
| 400 | case BSSGP_CAUSE_UNKNOWN_BVCI: |
| 401 | if (the_pcu.bvc_reset) { |
| 402 | the_pcu.bvc_reset = 0; |
| 403 | bvc_timeout(NULL); |
| 404 | } |
| 405 | break; |
| 406 | default: |
| 407 | break; |
| 408 | } |
| 409 | } |
| 410 | |
Harald Welte | 477e79e | 2012-06-18 12:21:03 +0800 | [diff] [blame] | 411 | int bssgp_prim_cb(struct osmo_prim_hdr *oph, void *ctx) |
| 412 | { |
Jacob Erlbeck | 39645b8 | 2015-03-16 12:27:11 +0100 | [diff] [blame] | 413 | struct osmo_bssgp_prim *bp; |
| 414 | bp = container_of(oph, struct osmo_bssgp_prim, oph); |
| 415 | |
| 416 | switch (oph->sap) { |
| 417 | case SAP_BSSGP_NM: |
| 418 | if (oph->primitive == PRIM_NM_STATUS) |
| 419 | handle_nm_status(bp); |
| 420 | break; |
| 421 | default: |
| 422 | break; |
| 423 | } |
Harald Welte | 477e79e | 2012-06-18 12:21:03 +0800 | [diff] [blame] | 424 | return 0; |
| 425 | } |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 426 | |
| 427 | static int sgsn_ns_cb(enum gprs_ns_evt event, struct gprs_nsvc *nsvc, struct msgb *msg, uint16_t bvci) |
| 428 | { |
| 429 | int rc = 0; |
| 430 | switch (event) { |
| 431 | case GPRS_NS_EVT_UNIT_DATA: |
| 432 | /* hand the message into the BSSGP implementation */ |
| 433 | rc = gprs_bssgp_pcu_rcvmsg(msg); |
| 434 | break; |
| 435 | default: |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 436 | LOGP(DPCU, LOGL_NOTICE, "RLCMAC: Unknown event %u from NS\n", event); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 437 | rc = -EIO; |
| 438 | break; |
| 439 | } |
| 440 | return rc; |
| 441 | } |
| 442 | |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 443 | |
| 444 | static int nsvc_signal_cb(unsigned int subsys, unsigned int signal, |
| 445 | void *handler_data, void *signal_data) |
| 446 | { |
| 447 | struct ns_signal_data *nssd; |
| 448 | |
| 449 | if (subsys != SS_L_NS) |
| 450 | return -EINVAL; |
| 451 | |
| 452 | nssd = (struct ns_signal_data *)signal_data; |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 453 | if (nssd->nsvc != the_pcu.nsvc) { |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 454 | LOGP(DPCU, LOGL_ERROR, "Signal received of unknown NSVC\n"); |
| 455 | return -EINVAL; |
| 456 | } |
| 457 | |
| 458 | switch (signal) { |
| 459 | case S_NS_UNBLOCK: |
Holger Hans Peter Freyther | 4b984b1 | 2013-07-13 12:57:06 +0200 | [diff] [blame] | 460 | if (!the_pcu.nsvc_unblocked) { |
| 461 | the_pcu.nsvc_unblocked = 1; |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 462 | LOGP(DPCU, LOGL_NOTICE, "NS-VC %d is unblocked.\n", |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 463 | the_pcu.nsvc->nsvci); |
| 464 | the_pcu.bvc_sig_reset = 0; |
| 465 | the_pcu.bvc_reset = 0; |
| 466 | the_pcu.bvc_unblocked = 0; |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 467 | bvc_timeout(NULL); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 468 | } |
| 469 | break; |
| 470 | case S_NS_BLOCK: |
Holger Hans Peter Freyther | 4b984b1 | 2013-07-13 12:57:06 +0200 | [diff] [blame] | 471 | if (the_pcu.nsvc_unblocked) { |
| 472 | the_pcu.nsvc_unblocked = 0; |
Holger Hans Peter Freyther | ed70cb7 | 2013-07-13 12:53:46 +0200 | [diff] [blame] | 473 | osmo_timer_del(&the_pcu.bvc_timer); |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 474 | the_pcu.bvc_sig_reset = 0; |
| 475 | the_pcu.bvc_reset = 0; |
| 476 | the_pcu.bvc_unblocked = 0; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 477 | LOGP(DPCU, LOGL_NOTICE, "NS-VC is blocked.\n"); |
| 478 | } |
| 479 | break; |
| 480 | } |
| 481 | |
| 482 | return 0; |
| 483 | } |
| 484 | |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 485 | int gprs_bssgp_tx_fc_bvc(void) |
| 486 | { |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 487 | if (!the_pcu.bctx) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 488 | LOGP(DBSSGP, LOGL_ERROR, "No bctx\n"); |
| 489 | return -EIO; |
| 490 | } |
| 491 | /* FIXME: use real values */ |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 492 | 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] | 493 | NULL, NULL); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 494 | } |
| 495 | |
| 496 | static void bvc_timeout(void *_priv) |
| 497 | { |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 498 | if (!the_pcu.bvc_sig_reset) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 499 | LOGP(DBSSGP, LOGL_INFO, "Sending reset on BVCI 0\n"); |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 500 | bssgp_tx_bvc_reset(the_pcu.bctx, 0, BSSGP_CAUSE_OML_INTERV); |
Jacob Erlbeck | 1e96af6 | 2015-03-17 08:11:25 +0100 | [diff] [blame] | 501 | osmo_timer_schedule(&the_pcu.bvc_timer, BSSGP_TIMER_T2, 0); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 502 | return; |
| 503 | } |
| 504 | |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 505 | if (!the_pcu.bvc_reset) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 506 | LOGP(DBSSGP, LOGL_INFO, "Sending reset on BVCI %d\n", |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 507 | the_pcu.bctx->bvci); |
| 508 | bssgp_tx_bvc_reset(the_pcu.bctx, the_pcu.bctx->bvci, BSSGP_CAUSE_OML_INTERV); |
Jacob Erlbeck | 1e96af6 | 2015-03-17 08:11:25 +0100 | [diff] [blame] | 509 | osmo_timer_schedule(&the_pcu.bvc_timer, BSSGP_TIMER_T2, 0); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 510 | return; |
| 511 | } |
| 512 | |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 513 | if (!the_pcu.bvc_unblocked) { |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 514 | LOGP(DBSSGP, LOGL_INFO, "Sending unblock on BVCI %d\n", |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 515 | the_pcu.bctx->bvci); |
| 516 | bssgp_tx_bvc_unblock(the_pcu.bctx); |
Jacob Erlbeck | 1e96af6 | 2015-03-17 08:11:25 +0100 | [diff] [blame] | 517 | osmo_timer_schedule(&the_pcu.bvc_timer, BSSGP_TIMER_T1, 0); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 518 | return; |
| 519 | } |
| 520 | |
| 521 | 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] | 522 | the_pcu.bctx->bvci); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 523 | gprs_bssgp_tx_fc_bvc(); |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 524 | 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] | 525 | } |
| 526 | |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 527 | /* create BSSGP/NS layer instances */ |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 528 | 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] | 529 | uint16_t local_port, uint32_t sgsn_ip, |
Harald Welte | 30a73d8 | 2013-03-10 08:54:30 +0000 | [diff] [blame] | 530 | uint16_t sgsn_port, uint16_t nsei, uint16_t nsvci, uint16_t bvci, |
| 531 | uint16_t mcc, uint16_t mnc, uint16_t lac, uint16_t rac, |
| 532 | uint16_t cell_id) |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 533 | { |
| 534 | struct sockaddr_in dest; |
Andreas Eversberg | a3c12fb | 2012-09-28 22:46:33 +0200 | [diff] [blame] | 535 | int rc; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 536 | |
Andreas Eversberg | 514491d | 2012-09-23 06:42:07 +0200 | [diff] [blame] | 537 | mcc = ((mcc & 0xf00) >> 8) * 100 + ((mcc & 0x0f0) >> 4) * 10 + (mcc & 0x00f); |
| 538 | mnc = ((mnc & 0xf00) >> 8) * 100 + ((mnc & 0x0f0) >> 4) * 10 + (mnc & 0x00f); |
| 539 | cell_id = ntohs(cell_id); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 540 | |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 541 | /* if already created... return the current address */ |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 542 | if (the_pcu.bctx) |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 543 | return &the_pcu; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 544 | |
Holger Hans Peter Freyther | b67a8a3 | 2013-07-28 18:55:14 +0200 | [diff] [blame] | 545 | the_pcu.bts = bts; |
| 546 | |
Andreas Eversberg | 71cce91 | 2013-01-16 13:49:00 +0100 | [diff] [blame] | 547 | bssgp_nsi = gprs_ns_instantiate(&sgsn_ns_cb, tall_pcu_ctx); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 548 | if (!bssgp_nsi) { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 549 | LOGP(DBSSGP, LOGL_ERROR, "Failed to create NS instance\n"); |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 550 | return NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 551 | } |
Harald Welte | de5253a | 2013-01-11 09:45:17 +0100 | [diff] [blame] | 552 | gprs_ns_vty_init(bssgp_nsi); |
Harald Welte | 30a73d8 | 2013-03-10 08:54:30 +0000 | [diff] [blame] | 553 | bssgp_nsi->nsip.local_port = local_port; |
Andreas Eversberg | a3c12fb | 2012-09-28 22:46:33 +0200 | [diff] [blame] | 554 | rc = gprs_ns_nsip_listen(bssgp_nsi); |
| 555 | if (rc < 0) { |
| 556 | LOGP(DBSSGP, LOGL_ERROR, "Failed to create socket\n"); |
| 557 | gprs_ns_destroy(bssgp_nsi); |
| 558 | bssgp_nsi = NULL; |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 559 | return NULL; |
Andreas Eversberg | a3c12fb | 2012-09-28 22:46:33 +0200 | [diff] [blame] | 560 | } |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 561 | |
| 562 | dest.sin_family = AF_INET; |
| 563 | dest.sin_port = htons(sgsn_port); |
| 564 | dest.sin_addr.s_addr = htonl(sgsn_ip); |
| 565 | |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 566 | the_pcu.nsvc = gprs_ns_nsip_connect(bssgp_nsi, &dest, nsei, nsvci); |
| 567 | if (!the_pcu.nsvc) { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 568 | LOGP(DBSSGP, LOGL_ERROR, "Failed to create NSVCt\n"); |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 569 | gprs_ns_destroy(bssgp_nsi); |
| 570 | bssgp_nsi = NULL; |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 571 | return NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 572 | } |
| 573 | |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 574 | the_pcu.bctx = btsctx_alloc(bvci, nsei); |
| 575 | if (!the_pcu.bctx) { |
Andreas Eversberg | 0e40309 | 2012-07-06 11:04:57 +0200 | [diff] [blame] | 576 | LOGP(DBSSGP, LOGL_ERROR, "Failed to create BSSGP context\n"); |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 577 | the_pcu.nsvc = NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 578 | gprs_ns_destroy(bssgp_nsi); |
| 579 | bssgp_nsi = NULL; |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 580 | return NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 581 | } |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 582 | the_pcu.bctx->ra_id.mcc = spoof_mcc ? : mcc; |
| 583 | the_pcu.bctx->ra_id.mnc = spoof_mnc ? : mnc; |
| 584 | the_pcu.bctx->ra_id.lac = lac; |
| 585 | the_pcu.bctx->ra_id.rac = rac; |
| 586 | the_pcu.bctx->cell_id = cell_id; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 587 | |
| 588 | osmo_signal_register_handler(SS_L_NS, nsvc_signal_cb, NULL); |
| 589 | |
Holger Hans Peter Freyther | ed70cb7 | 2013-07-13 12:53:46 +0200 | [diff] [blame] | 590 | the_pcu.bvc_timer.cb = bvc_timeout; |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 591 | |
| 592 | |
Holger Hans Peter Freyther | e8d9a5f | 2013-07-28 19:11:20 +0200 | [diff] [blame] | 593 | return &the_pcu; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 594 | } |
| 595 | |
Daniel Willmann | 6d8884d | 2014-06-04 18:30:59 +0200 | [diff] [blame] | 596 | void gprs_bssgp_destroy(void) |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 597 | { |
| 598 | if (!bssgp_nsi) |
| 599 | return; |
| 600 | |
Holger Hans Peter Freyther | ed70cb7 | 2013-07-13 12:53:46 +0200 | [diff] [blame] | 601 | osmo_timer_del(&the_pcu.bvc_timer); |
Andreas Eversberg | cd8a83a | 2012-09-23 06:41:21 +0200 | [diff] [blame] | 602 | |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 603 | osmo_signal_unregister_handler(SS_L_NS, nsvc_signal_cb, NULL); |
| 604 | |
Holger Hans Peter Freyther | 90f08ef | 2013-07-13 12:45:44 +0200 | [diff] [blame] | 605 | the_pcu.nsvc = NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 606 | |
| 607 | /* FIXME: move this to libgb: btsctx_free() */ |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 608 | llist_del(&the_pcu.bctx->list); |
| 609 | talloc_free(the_pcu.bctx); |
| 610 | the_pcu.bctx = NULL; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 611 | |
| 612 | /* FIXME: blocking... */ |
Holger Hans Peter Freyther | 40bd0c4 | 2013-07-13 12:58:20 +0200 | [diff] [blame] | 613 | the_pcu.nsvc_unblocked = 0; |
| 614 | the_pcu.bvc_sig_reset = 0; |
| 615 | the_pcu.bvc_reset = 0; |
| 616 | the_pcu.bvc_unblocked = 0; |
Andreas Eversberg | bf5a0f6 | 2012-07-06 08:58:22 +0200 | [diff] [blame] | 617 | |
| 618 | gprs_ns_destroy(bssgp_nsi); |
| 619 | bssgp_nsi = NULL; |
| 620 | } |
| 621 | |
Holger Hans Peter Freyther | 90692f9 | 2013-07-13 12:51:16 +0200 | [diff] [blame] | 622 | struct bssgp_bvc_ctx *gprs_bssgp_pcu_current_bctx(void) |
| 623 | { |
| 624 | return the_pcu.bctx; |
| 625 | } |