Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 1 | /* GPRS SGSN integration with libgtp of OpenGGSN */ |
Harald Welte | 993d060 | 2010-06-04 17:43:19 +0200 | [diff] [blame] | 2 | /* libgtp implements the GPRS Tunelling Protocol GTP per TS 09.60 / 29.060 */ |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 3 | |
| 4 | /* (C) 2010 by Harald Welte <laforge@gnumonks.org> |
Holger Hans Peter Freyther | 85531cc | 2010-10-06 20:37:09 +0800 | [diff] [blame] | 5 | * (C) 2010 by On-Waves |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 6 | * All Rights Reserved |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 9 | * it under the terms of the GNU Affero General Public License as published by |
| 10 | * the Free Software Foundation; either version 3 of the License, or |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 16 | * GNU Affero General Public License for more details. |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 17 | * |
Harald Welte | 9af6ddf | 2011-01-01 15:25:50 +0100 | [diff] [blame] | 18 | * You should have received a copy of the GNU Affero General Public License |
| 19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 20 | * |
| 21 | */ |
| 22 | |
| 23 | #include <unistd.h> |
| 24 | #include <stdio.h> |
| 25 | #include <stdlib.h> |
| 26 | #include <string.h> |
| 27 | #include <getopt.h> |
| 28 | #include <errno.h> |
| 29 | #include <signal.h> |
| 30 | #include <sys/fcntl.h> |
| 31 | #include <sys/stat.h> |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 32 | #include <sys/socket.h> |
| 33 | #include <netinet/in.h> |
| 34 | #include <arpa/inet.h> |
| 35 | |
Pablo Neira Ayuso | 136f453 | 2011-03-22 16:47:59 +0100 | [diff] [blame] | 36 | #include <osmocom/core/talloc.h> |
| 37 | #include <osmocom/core/select.h> |
| 38 | #include <osmocom/core/rate_ctr.h> |
Harald Welte | 6abf94e | 2010-05-18 10:35:06 +0200 | [diff] [blame] | 39 | #include <openbsc/gsm_04_08_gprs.h> |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 40 | |
| 41 | #include <openbsc/signal.h> |
| 42 | #include <openbsc/debug.h> |
| 43 | #include <openbsc/sgsn.h> |
Harald Welte | ebabdea | 2010-06-01 18:28:10 +0200 | [diff] [blame] | 44 | #include <openbsc/gprs_llc.h> |
| 45 | #include <openbsc/gprs_bssgp.h> |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 46 | #include <openbsc/gprs_sgsn.h> |
Harald Welte | 6abf94e | 2010-05-18 10:35:06 +0200 | [diff] [blame] | 47 | #include <openbsc/gprs_gmm.h> |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 48 | |
| 49 | #include <gtp.h> |
| 50 | #include <pdp.h> |
| 51 | |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 52 | const struct value_string gtp_cause_strs[] = { |
| 53 | { GTPCAUSE_REQ_IMSI, "Request IMSI" }, |
| 54 | { GTPCAUSE_REQ_IMEI, "Request IMEI" }, |
| 55 | { GTPCAUSE_REQ_IMSI_IMEI, "Request IMSI and IMEI" }, |
| 56 | { GTPCAUSE_NO_ID_NEEDED, "No identity needed" }, |
| 57 | { GTPCAUSE_MS_REFUSES_X, "MS refuses" }, |
| 58 | { GTPCAUSE_MS_NOT_RESP_X, "MS is not GPRS responding" }, |
| 59 | { GTPCAUSE_ACC_REQ, "Request accepted" }, |
| 60 | { GTPCAUSE_NON_EXIST, "Non-existent" }, |
| 61 | { GTPCAUSE_INVALID_MESSAGE, "Invalid message format" }, |
| 62 | { GTPCAUSE_IMSI_NOT_KNOWN, "IMSI not known" }, |
| 63 | { GTPCAUSE_MS_DETACHED, "MS is GPRS detached" }, |
| 64 | { GTPCAUSE_MS_NOT_RESP, "MS is not GPRS responding" }, |
| 65 | { GTPCAUSE_MS_REFUSES, "MS refuses" }, |
| 66 | { GTPCAUSE_NO_RESOURCES, "No resources available" }, |
| 67 | { GTPCAUSE_NOT_SUPPORTED, "Service not supported" }, |
| 68 | { GTPCAUSE_MAN_IE_INCORRECT, "Mandatory IE incorrect" }, |
| 69 | { GTPCAUSE_MAN_IE_MISSING, "Mandatory IE missing" }, |
| 70 | { GTPCAUSE_OPT_IE_INCORRECT, "Optional IE incorrect" }, |
| 71 | { GTPCAUSE_SYS_FAIL, "System failure" }, |
| 72 | { GTPCAUSE_ROAMING_REST, "Roaming restrictions" }, |
| 73 | { GTPCAUSE_PTIMSI_MISMATCH, "P-TMSI Signature mismatch" }, |
| 74 | { GTPCAUSE_CONN_SUSP, "GPRS connection suspended" }, |
| 75 | { GTPCAUSE_AUTH_FAIL, "Authentication failure" }, |
| 76 | { GTPCAUSE_USER_AUTH_FAIL, "User authentication failed" }, |
| 77 | { GTPCAUSE_CONTEXT_NOT_FOUND, "Context not found" }, |
| 78 | { GTPCAUSE_ADDR_OCCUPIED, "All dynamic PDP addresses occupied" }, |
| 79 | { GTPCAUSE_NO_MEMORY, "No memory is available" }, |
| 80 | { GTPCAUSE_RELOC_FAIL, "Relocation failure" }, |
| 81 | { GTPCAUSE_UNKNOWN_MAN_EXTHEADER, "Unknown mandatory ext. header" }, |
| 82 | { GTPCAUSE_SEM_ERR_TFT, "Semantic error in TFT operation" }, |
| 83 | { GTPCAUSE_SYN_ERR_TFT, "Syntactic error in TFT operation" }, |
| 84 | { GTPCAUSE_SEM_ERR_FILTER, "Semantic errors in packet filter" }, |
| 85 | { GTPCAUSE_SYN_ERR_FILTER, "Syntactic errors in packet filter" }, |
| 86 | { GTPCAUSE_MISSING_APN, "Missing or unknown APN" }, |
| 87 | { GTPCAUSE_UNKNOWN_PDP, "Unknown PDP address or PDP type" }, |
| 88 | { 0, NULL } |
| 89 | }; |
| 90 | |
Harald Welte | 6add7c2 | 2010-07-02 22:47:39 +0200 | [diff] [blame] | 91 | /* Generate the GTP IMSI IE according to 09.60 Section 7.9.2 */ |
| 92 | static uint64_t imsi_str2gtp(char *str) |
| 93 | { |
| 94 | uint64_t imsi64 = 0; |
| 95 | unsigned int n; |
| 96 | unsigned int imsi_len = strlen(str); |
| 97 | |
| 98 | if (imsi_len > 16) { |
| 99 | LOGP(DGPRS, LOGL_NOTICE, "IMSI length > 16 not supported!\n"); |
| 100 | return 0; |
| 101 | } |
| 102 | |
| 103 | for (n = 0; n < 16; n++) { |
| 104 | uint64_t val; |
| 105 | if (n < imsi_len) |
| 106 | val = (str[n]-'0') & 0xf; |
| 107 | else |
| 108 | val = 0xf; |
| 109 | imsi64 |= (val << (n*4)); |
| 110 | } |
| 111 | return imsi64; |
| 112 | } |
| 113 | |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 114 | /* generate a PDP context based on the IE's from the 04.08 message, |
| 115 | * and send the GTP create pdp context request to the GGSN */ |
Harald Welte | 77289c2 | 2010-05-18 14:32:29 +0200 | [diff] [blame] | 116 | struct sgsn_pdp_ctx *sgsn_create_pdp_ctx(struct sgsn_ggsn_ctx *ggsn, |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 117 | struct sgsn_mm_ctx *mmctx, |
| 118 | uint16_t nsapi, |
| 119 | struct tlv_parsed *tp) |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 120 | { |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 121 | struct sgsn_pdp_ctx *pctx; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 122 | struct pdp_t *pdp; |
Harald Welte | 6add7c2 | 2010-07-02 22:47:39 +0200 | [diff] [blame] | 123 | uint64_t imsi_ui64; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 124 | int rc; |
| 125 | |
Harald Welte | 77289c2 | 2010-05-18 14:32:29 +0200 | [diff] [blame] | 126 | LOGP(DGPRS, LOGL_ERROR, "Create PDP Context\n"); |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 127 | pctx = sgsn_pdp_ctx_alloc(mmctx, nsapi); |
| 128 | if (!pctx) { |
| 129 | LOGP(DGPRS, LOGL_ERROR, "Couldn't allocate PDP Ctx\n"); |
| 130 | return NULL; |
| 131 | } |
| 132 | |
Harald Welte | 6add7c2 | 2010-07-02 22:47:39 +0200 | [diff] [blame] | 133 | imsi_ui64 = imsi_str2gtp(mmctx->imsi); |
| 134 | |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 135 | rc = pdp_newpdp(&pdp, imsi_ui64, nsapi, NULL); |
| 136 | if (rc) { |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 137 | LOGP(DGPRS, LOGL_ERROR, "Out of libgtp PDP Contexts\n"); |
| 138 | return NULL; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 139 | } |
Harald Welte | bb1c805 | 2010-06-03 06:38:38 +0200 | [diff] [blame] | 140 | pdp->priv = pctx; |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 141 | pctx->lib = pdp; |
| 142 | pctx->ggsn = ggsn; |
| 143 | |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 144 | //pdp->peer = /* sockaddr_in of GGSN (receive) */ |
| 145 | //pdp->ipif = /* not used by library */ |
| 146 | pdp->version = ggsn->gtp_version; |
| 147 | pdp->hisaddr0 = ggsn->remote_addr; |
| 148 | pdp->hisaddr1 = ggsn->remote_addr; |
| 149 | //pdp->cch_pdp = 512; /* Charging Flat Rate */ |
| 150 | |
| 151 | /* MS provided APN, subscription not verified */ |
| 152 | pdp->selmode = 0x01; |
| 153 | |
| 154 | /* IMSI, TEID/TEIC, FLLU/FLLC, TID, NSAPI set in pdp_newpdp */ |
| 155 | |
| 156 | /* FIXME: MSISDN in BCD format from mmctx */ |
| 157 | //pdp->msisdn.l/.v |
| 158 | |
| 159 | /* End User Address from GMM requested PDP address */ |
| 160 | pdp->eua.l = TLVP_LEN(tp, OSMO_IE_GSM_REQ_PDP_ADDR); |
| 161 | if (pdp->eua.l > sizeof(pdp->eua.v)) |
| 162 | pdp->eua.l = sizeof(pdp->eua.v); |
| 163 | memcpy(pdp->eua.v, TLVP_VAL(tp, OSMO_IE_GSM_REQ_PDP_ADDR), |
| 164 | pdp->eua.l); |
| 165 | /* Highest 4 bits of first byte need to be set to 1, otherwise |
| 166 | * the IE is identical with the 04.08 PDP Address IE */ |
| 167 | pdp->eua.v[0] |= 0xf0; |
| 168 | |
| 169 | /* APN name from GMM */ |
| 170 | pdp->apn_use.l = TLVP_LEN(tp, GSM48_IE_GSM_APN); |
| 171 | if (pdp->apn_use.l > sizeof(pdp->apn_use.v)) |
| 172 | pdp->apn_use.l = sizeof(pdp->apn_use.v); |
| 173 | memcpy(pdp->apn_use.v, TLVP_VAL(tp, GSM48_IE_GSM_APN), |
| 174 | pdp->apn_use.l); |
| 175 | |
| 176 | /* Protocol Configuration Options from GMM */ |
| 177 | pdp->pco_req.l = TLVP_LEN(tp, GSM48_IE_GSM_PROTO_CONF_OPT); |
| 178 | if (pdp->pco_req.l > sizeof(pdp->pco_req.v)) |
| 179 | pdp->pco_req.l = sizeof(pdp->pco_req.v); |
| 180 | memcpy(pdp->pco_req.v, TLVP_VAL(tp, GSM48_IE_GSM_PROTO_CONF_OPT), |
| 181 | pdp->pco_req.l); |
| 182 | |
| 183 | /* QoS options from GMM */ |
| 184 | pdp->qos_req.l = TLVP_LEN(tp, OSMO_IE_GSM_REQ_QOS); |
| 185 | if (pdp->qos_req.l > sizeof(pdp->qos_req.v)) |
| 186 | pdp->qos_req.l = sizeof(pdp->qos_req.v); |
| 187 | memcpy(pdp->qos_req.v, TLVP_VAL(tp, OSMO_IE_GSM_REQ_QOS), |
| 188 | pdp->qos_req.l); |
| 189 | |
| 190 | /* SGSN address for control plane */ |
Harald Welte | 61ca7ce | 2010-06-02 23:17:33 +0200 | [diff] [blame] | 191 | pdp->gsnlc.l = sizeof(sgsn->cfg.gtp_listenaddr.sin_addr); |
| 192 | memcpy(pdp->gsnlc.v, &sgsn->cfg.gtp_listenaddr.sin_addr, |
| 193 | sizeof(sgsn->cfg.gtp_listenaddr.sin_addr)); |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 194 | |
| 195 | /* SGSN address for user plane */ |
Harald Welte | 61ca7ce | 2010-06-02 23:17:33 +0200 | [diff] [blame] | 196 | pdp->gsnlu.l = sizeof(sgsn->cfg.gtp_listenaddr.sin_addr); |
| 197 | memcpy(pdp->gsnlu.v, &sgsn->cfg.gtp_listenaddr.sin_addr, |
| 198 | sizeof(sgsn->cfg.gtp_listenaddr.sin_addr)); |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 199 | |
Harald Welte | 6abf94e | 2010-05-18 10:35:06 +0200 | [diff] [blame] | 200 | /* change pdp state to 'requested' */ |
| 201 | pctx->state = PDP_STATE_CR_REQ; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 202 | |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 203 | rc = gtp_create_context_req(ggsn->gsn, pdp, pctx); |
| 204 | /* FIXME */ |
| 205 | |
| 206 | return pctx; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 207 | } |
| 208 | |
Harald Welte | 3357add | 2010-12-24 19:21:13 +0100 | [diff] [blame] | 209 | /* SGSN wants to delete a PDP context */ |
Harald Welte | 77289c2 | 2010-05-18 14:32:29 +0200 | [diff] [blame] | 210 | int sgsn_delete_pdp_ctx(struct sgsn_pdp_ctx *pctx) |
| 211 | { |
| 212 | LOGP(DGPRS, LOGL_ERROR, "Delete PDP Context\n"); |
| 213 | |
| 214 | /* FIXME: decide if we need teardown or not ! */ |
| 215 | return gtp_delete_context_req(pctx->ggsn->gsn, pctx->lib, pctx, 1); |
| 216 | } |
Harald Welte | 6abf94e | 2010-05-18 10:35:06 +0200 | [diff] [blame] | 217 | |
| 218 | struct cause_map { |
| 219 | uint8_t cause_in; |
| 220 | uint8_t cause_out; |
| 221 | }; |
| 222 | |
| 223 | static uint8_t cause_map(const struct cause_map *map, uint8_t in, uint8_t deflt) |
| 224 | { |
| 225 | const struct cause_map *m; |
| 226 | |
| 227 | for (m = map; m->cause_in && m->cause_out; m++) { |
| 228 | if (m->cause_in == in) |
| 229 | return m->cause_out; |
| 230 | } |
| 231 | return deflt; |
| 232 | } |
| 233 | |
| 234 | /* how do we map from gtp cause to SM cause */ |
| 235 | static const struct cause_map gtp2sm_cause_map[] = { |
| 236 | { GTPCAUSE_NO_RESOURCES, GSM_CAUSE_INSUFF_RSRC }, |
| 237 | { GTPCAUSE_NOT_SUPPORTED, GSM_CAUSE_SERV_OPT_NOTSUPP }, |
| 238 | { GTPCAUSE_MAN_IE_INCORRECT, GSM_CAUSE_INV_MAND_INFO }, |
| 239 | { GTPCAUSE_MAN_IE_MISSING, GSM_CAUSE_INV_MAND_INFO }, |
| 240 | { GTPCAUSE_OPT_IE_INCORRECT, GSM_CAUSE_PROTO_ERR_UNSPEC }, |
| 241 | { GTPCAUSE_SYS_FAIL, GSM_CAUSE_NET_FAIL }, |
| 242 | { GTPCAUSE_ROAMING_REST, GSM_CAUSE_REQ_SERV_OPT_NOTSUB }, |
| 243 | { GTPCAUSE_PTIMSI_MISMATCH, GSM_CAUSE_PROTO_ERR_UNSPEC }, |
| 244 | { GTPCAUSE_CONN_SUSP, GSM_CAUSE_PROTO_ERR_UNSPEC }, |
| 245 | { GTPCAUSE_AUTH_FAIL, GSM_CAUSE_AUTH_FAILED }, |
| 246 | { GTPCAUSE_USER_AUTH_FAIL, GSM_CAUSE_ACT_REJ_GGSN }, |
| 247 | { GTPCAUSE_CONTEXT_NOT_FOUND, GSM_CAUSE_PROTO_ERR_UNSPEC }, |
| 248 | { GTPCAUSE_ADDR_OCCUPIED, GSM_CAUSE_INSUFF_RSRC }, |
| 249 | { GTPCAUSE_NO_MEMORY, GSM_CAUSE_INSUFF_RSRC }, |
| 250 | { GTPCAUSE_RELOC_FAIL, GSM_CAUSE_PROTO_ERR_UNSPEC }, |
| 251 | { GTPCAUSE_UNKNOWN_MAN_EXTHEADER, GSM_CAUSE_PROTO_ERR_UNSPEC }, |
| 252 | { GTPCAUSE_MISSING_APN, GSM_CAUSE_MISSING_APN }, |
| 253 | { GTPCAUSE_UNKNOWN_PDP, GSM_CAUSE_UNKNOWN_PDP }, |
| 254 | { 0, 0 } |
| 255 | }; |
| 256 | |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 257 | /* The GGSN has confirmed the creation of a PDP Context */ |
| 258 | static int create_pdp_conf(struct pdp_t *pdp, void *cbp, int cause) |
| 259 | { |
Harald Welte | d193cb3 | 2010-05-17 22:58:03 +0200 | [diff] [blame] | 260 | struct sgsn_pdp_ctx *pctx = cbp; |
Harald Welte | 6abf94e | 2010-05-18 10:35:06 +0200 | [diff] [blame] | 261 | uint8_t reject_cause; |
Harald Welte | f11b6d2 | 2010-06-02 10:09:50 +0200 | [diff] [blame] | 262 | int rc; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 263 | |
| 264 | DEBUGP(DGPRS, "Received CREATE PDP CTX CONF, cause=%d(%s)\n", |
| 265 | cause, get_value_string(gtp_cause_strs, cause)); |
| 266 | |
| 267 | /* Check for cause value if it was really successful */ |
| 268 | if (cause < 0) { |
| 269 | LOGP(DGPRS, LOGL_NOTICE, "Create PDP ctx req timed out\n"); |
Harald Welte | 1371f7d | 2010-06-01 11:52:41 +0200 | [diff] [blame] | 270 | if (pdp && pdp->version == 1) { |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 271 | pdp->version = 0; |
Harald Welte | 8fc1a46 | 2010-05-17 00:53:10 +0200 | [diff] [blame] | 272 | gtp_create_context_req(sgsn->gsn, pdp, cbp); |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 273 | return 0; |
| 274 | } else { |
Harald Welte | 6abf94e | 2010-05-18 10:35:06 +0200 | [diff] [blame] | 275 | reject_cause = GSM_CAUSE_NET_FAIL; |
| 276 | goto reject; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 277 | } |
| 278 | } |
| 279 | |
| 280 | /* Check for cause value if it was really successful */ |
| 281 | if (cause != GTPCAUSE_ACC_REQ) { |
Harald Welte | 6abf94e | 2010-05-18 10:35:06 +0200 | [diff] [blame] | 282 | reject_cause = cause_map(gtp2sm_cause_map, cause, |
| 283 | GSM_CAUSE_ACT_REJ_GGSN); |
| 284 | goto reject; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 285 | } |
| 286 | |
Harald Welte | ebabdea | 2010-06-01 18:28:10 +0200 | [diff] [blame] | 287 | /* Activate the SNDCP layer */ |
| 288 | sndcp_sm_activate_ind(&pctx->mm->llme->lle[pctx->sapi], pctx->nsapi); |
| 289 | |
Harald Welte | 6abf94e | 2010-05-18 10:35:06 +0200 | [diff] [blame] | 290 | /* Send PDP CTX ACT to MS */ |
| 291 | return gsm48_tx_gsm_act_pdp_acc(pctx); |
| 292 | |
| 293 | reject: |
| 294 | pctx->state = PDP_STATE_NONE; |
Harald Welte | 1371f7d | 2010-06-01 11:52:41 +0200 | [diff] [blame] | 295 | if (pdp) |
| 296 | pdp_freepdp(pdp); |
Harald Welte | 6abf94e | 2010-05-18 10:35:06 +0200 | [diff] [blame] | 297 | /* Send PDP CTX ACT REJ to MS */ |
Harald Welte | f11b6d2 | 2010-06-02 10:09:50 +0200 | [diff] [blame] | 298 | rc = gsm48_tx_gsm_act_pdp_rej(pctx->mm, pctx->ti, reject_cause, |
Harald Welte | 6abf94e | 2010-05-18 10:35:06 +0200 | [diff] [blame] | 299 | 0, NULL); |
Harald Welte | f11b6d2 | 2010-06-02 10:09:50 +0200 | [diff] [blame] | 300 | sgsn_pdp_ctx_free(pctx); |
Harald Welte | 6abf94e | 2010-05-18 10:35:06 +0200 | [diff] [blame] | 301 | |
| 302 | return EOF; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 303 | } |
| 304 | |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 305 | /* Confirmation of a PDP Context Delete */ |
Harald Welte | 77289c2 | 2010-05-18 14:32:29 +0200 | [diff] [blame] | 306 | static int delete_pdp_conf(struct pdp_t *pdp, void *cbp, int cause) |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 307 | { |
Harald Welte | 77289c2 | 2010-05-18 14:32:29 +0200 | [diff] [blame] | 308 | struct sgsn_pdp_ctx *pctx = cbp; |
| 309 | int rc; |
| 310 | |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 311 | DEBUGP(DGPRS, "Received DELETE PDP CTX CONF, cause=%d(%s)\n", |
| 312 | cause, get_value_string(gtp_cause_strs, cause)); |
Harald Welte | 77289c2 | 2010-05-18 14:32:29 +0200 | [diff] [blame] | 313 | |
Harald Welte | 8fc60f0 | 2010-06-28 22:21:57 +0200 | [diff] [blame] | 314 | /* Deactivate the SNDCP layer */ |
| 315 | sndcp_sm_deactivate_ind(&pctx->mm->llme->lle[pctx->sapi], pctx->nsapi); |
| 316 | |
Harald Welte | 77289c2 | 2010-05-18 14:32:29 +0200 | [diff] [blame] | 317 | /* Confirm deactivation of PDP context to MS */ |
| 318 | rc = gsm48_tx_gsm_deact_pdp_acc(pctx); |
| 319 | |
| 320 | sgsn_pdp_ctx_free(pctx); |
| 321 | |
| 322 | return rc; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 323 | } |
| 324 | |
| 325 | /* Confirmation of an GTP ECHO request */ |
Harald Welte | a9b473a | 2010-12-24 21:13:26 +0100 | [diff] [blame] | 326 | static int echo_conf(struct pdp_t *pdp, void *cbp, int recovery) |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 327 | { |
| 328 | if (recovery < 0) { |
| 329 | DEBUGP(DGPRS, "GTP Echo Request timed out\n"); |
| 330 | /* FIXME: if version == 1, retry with version 0 */ |
| 331 | } else { |
| 332 | DEBUGP(DGPRS, "GTP Rx Echo Response\n"); |
Harald Welte | a9b473a | 2010-12-24 21:13:26 +0100 | [diff] [blame] | 333 | } |
| 334 | return 0; |
| 335 | } |
| 336 | |
| 337 | /* Any message received by GGSN contains a recovery IE */ |
| 338 | static int cb_recovery(struct sockaddr_in *peer, uint8_t recovery) |
| 339 | { |
| 340 | struct sgsn_ggsn_ctx *ggsn; |
| 341 | |
| 342 | ggsn = sgsn_ggsn_ctx_by_addr(&peer->sin_addr); |
| 343 | if (!ggsn) { |
| 344 | DEBUGP(DGPRS, "Received Recovery IE for unknown GGSN\n"); |
| 345 | return -EINVAL; |
| 346 | } |
| 347 | |
| 348 | if (ggsn->remote_restart_ctr == -1) { |
| 349 | /* First received ECHO RESPONSE, note the restart ctr */ |
| 350 | ggsn->remote_restart_ctr = recovery; |
| 351 | } else if (ggsn->remote_restart_ctr != recovery) { |
| 352 | /* counter has changed (GGSN restart): release all PDP */ |
| 353 | LOGP(DGPRS, LOGL_NOTICE, "GGSN recovery (%u->%u), " |
| 354 | "releasing all PDP contexts\n", |
| 355 | ggsn->remote_restart_ctr, recovery); |
| 356 | ggsn->remote_restart_ctr = recovery; |
| 357 | drop_all_pdp_for_ggsn(ggsn); |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 358 | } |
| 359 | return 0; |
| 360 | } |
| 361 | |
| 362 | /* libgtp callback for confirmations */ |
| 363 | static int cb_conf(int type, int cause, struct pdp_t *pdp, void *cbp) |
| 364 | { |
| 365 | DEBUGP(DGPRS, "libgtp cb_conf(type=%d, cause=%d, pdp=%p, cbp=%p)\n", |
| 366 | type, cause, pdp, cbp); |
| 367 | |
| 368 | if (cause == EOF) |
| 369 | LOGP(DGPRS, LOGL_ERROR, "libgtp EOF (type=%u, pdp=%p, cbp=%p)\n", |
| 370 | type, pdp, cbp); |
| 371 | |
| 372 | switch (type) { |
| 373 | case GTP_ECHO_REQ: |
Harald Welte | 3357add | 2010-12-24 19:21:13 +0100 | [diff] [blame] | 374 | /* libgtp hands us the RECOVERY number instead of a cause */ |
Harald Welte | a9b473a | 2010-12-24 21:13:26 +0100 | [diff] [blame] | 375 | return echo_conf(pdp, cbp, cause); |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 376 | case GTP_CREATE_PDP_REQ: |
| 377 | return create_pdp_conf(pdp, cbp, cause); |
| 378 | case GTP_DELETE_PDP_REQ: |
Harald Welte | 77289c2 | 2010-05-18 14:32:29 +0200 | [diff] [blame] | 379 | return delete_pdp_conf(pdp, cbp, cause); |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 380 | default: |
| 381 | break; |
| 382 | } |
| 383 | return 0; |
| 384 | } |
| 385 | |
| 386 | /* Called whenever a PDP context is deleted for any reason */ |
| 387 | static int cb_delete_context(struct pdp_t *pdp) |
| 388 | { |
| 389 | LOGP(DGPRS, LOGL_INFO, "PDP Context was deleted\n"); |
| 390 | return 0; |
| 391 | } |
| 392 | |
| 393 | /* Called when we receive a Version Not Supported message */ |
| 394 | static int cb_unsup_ind(struct sockaddr_in *peer) |
| 395 | { |
| 396 | LOGP(DGPRS, LOGL_INFO, "GTP Version not supported Indication " |
| 397 | "from %s:%u\n", inet_ntoa(peer->sin_addr), |
| 398 | ntohs(peer->sin_port)); |
| 399 | return 0; |
| 400 | } |
| 401 | |
| 402 | /* Called when we receive a Supported Ext Headers Notification */ |
| 403 | static int cb_extheader_ind(struct sockaddr_in *peer) |
| 404 | { |
| 405 | LOGP(DGPRS, LOGL_INFO, "GTP Supported Ext Headers Noficiation " |
| 406 | "from %s:%u\n", inet_ntoa(peer->sin_addr), |
| 407 | ntohs(peer->sin_port)); |
| 408 | return 0; |
| 409 | } |
| 410 | |
| 411 | /* Called whenever we recive a DATA packet */ |
Harald Welte | bb1c805 | 2010-06-03 06:38:38 +0200 | [diff] [blame] | 412 | static int cb_data_ind(struct pdp_t *lib, void *packet, unsigned int len) |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 413 | { |
Harald Welte | bb35c45 | 2010-06-09 16:22:28 +0200 | [diff] [blame] | 414 | struct bssgp_paging_info pinfo; |
Harald Welte | bb1c805 | 2010-06-03 06:38:38 +0200 | [diff] [blame] | 415 | struct sgsn_pdp_ctx *pdp; |
Harald Welte | bb35c45 | 2010-06-09 16:22:28 +0200 | [diff] [blame] | 416 | struct sgsn_mm_ctx *mm; |
| 417 | struct msgb *msg; |
Harald Welte | bb1c805 | 2010-06-03 06:38:38 +0200 | [diff] [blame] | 418 | uint8_t *ud; |
Harald Welte | bb35c45 | 2010-06-09 16:22:28 +0200 | [diff] [blame] | 419 | int rc; |
Harald Welte | bb1c805 | 2010-06-03 06:38:38 +0200 | [diff] [blame] | 420 | |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 421 | DEBUGP(DGPRS, "GTP DATA IND from GGSN, length=%u\n", len); |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 422 | |
Harald Welte | bb1c805 | 2010-06-03 06:38:38 +0200 | [diff] [blame] | 423 | pdp = lib->priv; |
| 424 | if (!pdp) { |
| 425 | DEBUGP(DGPRS, "GTP DATA IND from GGSN for unknown PDP\n"); |
| 426 | return -EIO; |
| 427 | } |
Harald Welte | bb35c45 | 2010-06-09 16:22:28 +0200 | [diff] [blame] | 428 | mm = pdp->mm; |
Harald Welte | bb1c805 | 2010-06-03 06:38:38 +0200 | [diff] [blame] | 429 | |
Sylvain Munaut | 5914bad | 2010-06-09 20:49:24 +0200 | [diff] [blame] | 430 | msg = msgb_alloc_headroom(len+256, 128, "GTP->SNDCP"); |
Harald Welte | bb1c805 | 2010-06-03 06:38:38 +0200 | [diff] [blame] | 431 | ud = msgb_put(msg, len); |
| 432 | memcpy(ud, packet, len); |
| 433 | |
Harald Welte | bb35c45 | 2010-06-09 16:22:28 +0200 | [diff] [blame] | 434 | msgb_tlli(msg) = mm->tlli; |
| 435 | msgb_bvci(msg) = mm->bvci; |
| 436 | msgb_nsei(msg) = mm->nsei; |
Harald Welte | bb1c805 | 2010-06-03 06:38:38 +0200 | [diff] [blame] | 437 | |
Harald Welte | bb35c45 | 2010-06-09 16:22:28 +0200 | [diff] [blame] | 438 | switch (mm->mm_state) { |
| 439 | case GMM_REGISTERED_SUSPENDED: |
| 440 | /* initiate PS PAGING procedure */ |
| 441 | memset(&pinfo, 0, sizeof(pinfo)); |
| 442 | pinfo.mode = BSSGP_PAGING_PS; |
| 443 | pinfo.scope = BSSGP_PAGING_BVCI; |
| 444 | pinfo.bvci = mm->bvci; |
| 445 | pinfo.imsi = mm->imsi; |
Harald Welte | 937a9ec | 2010-07-01 11:53:25 +0200 | [diff] [blame] | 446 | pinfo.ptmsi = &mm->p_tmsi; |
Harald Welte | bb35c45 | 2010-06-09 16:22:28 +0200 | [diff] [blame] | 447 | pinfo.drx_params = mm->drx_parms; |
| 448 | pinfo.qos[0] = 0; // FIXME |
| 449 | rc = gprs_bssgp_tx_paging(mm->nsei, 0, &pinfo); |
Harald Welte | efbdee9 | 2010-06-10 00:20:12 +0200 | [diff] [blame] | 450 | rate_ctr_inc(&mm->ctrg->ctr[GMM_CTR_PAGING_PS]); |
Harald Welte | bb35c45 | 2010-06-09 16:22:28 +0200 | [diff] [blame] | 451 | /* FIXME: queue the packet we received from GTP */ |
| 452 | break; |
| 453 | case GMM_REGISTERED_NORMAL: |
| 454 | break; |
| 455 | default: |
| 456 | LOGP(DGPRS, LOGL_ERROR, "GTP DATA IND for TLLI %08X in state " |
| 457 | "%u\n", mm->tlli, mm->mm_state); |
| 458 | msgb_free(msg); |
| 459 | return -1; |
| 460 | } |
| 461 | |
Harald Welte | efbdee9 | 2010-06-10 00:20:12 +0200 | [diff] [blame] | 462 | rate_ctr_inc(&pdp->ctrg->ctr[PDP_CTR_PKTS_UDATA_OUT]); |
| 463 | rate_ctr_add(&pdp->ctrg->ctr[PDP_CTR_BYTES_UDATA_OUT], len); |
| 464 | rate_ctr_inc(&mm->ctrg->ctr[GMM_CTR_PKTS_UDATA_OUT]); |
| 465 | rate_ctr_add(&mm->ctrg->ctr[GMM_CTR_BYTES_UDATA_OUT], len); |
| 466 | |
Harald Welte | bb35c45 | 2010-06-09 16:22:28 +0200 | [diff] [blame] | 467 | return sndcp_unitdata_req(msg, &mm->llme->lle[pdp->sapi], |
| 468 | pdp->nsapi, mm); |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 469 | } |
| 470 | |
Harald Welte | ebabdea | 2010-06-01 18:28:10 +0200 | [diff] [blame] | 471 | /* Called by SNDCP when it has received/re-assembled a N-PDU */ |
Harald Welte | 8911cef | 2010-07-01 19:56:19 +0200 | [diff] [blame] | 472 | int sgsn_rx_sndcp_ud_ind(struct gprs_ra_id *ra_id, int32_t tlli, uint8_t nsapi, |
| 473 | struct msgb *msg, uint32_t npdu_len, uint8_t *npdu) |
Harald Welte | ebabdea | 2010-06-01 18:28:10 +0200 | [diff] [blame] | 474 | { |
| 475 | struct sgsn_mm_ctx *mmctx; |
| 476 | struct sgsn_pdp_ctx *pdp; |
Harald Welte | ebabdea | 2010-06-01 18:28:10 +0200 | [diff] [blame] | 477 | |
| 478 | /* look-up the MM context for this message */ |
Harald Welte | 8911cef | 2010-07-01 19:56:19 +0200 | [diff] [blame] | 479 | mmctx = sgsn_mm_ctx_by_tlli(tlli, ra_id); |
Harald Welte | ebabdea | 2010-06-01 18:28:10 +0200 | [diff] [blame] | 480 | if (!mmctx) { |
| 481 | LOGP(DGPRS, LOGL_ERROR, |
| 482 | "Cannot find MM CTX for TLLI %08x\n", tlli); |
| 483 | return -EIO; |
| 484 | } |
| 485 | /* look-up the PDP context for this message */ |
| 486 | pdp = sgsn_pdp_ctx_by_nsapi(mmctx, nsapi); |
| 487 | if (!pdp) { |
| 488 | LOGP(DGPRS, LOGL_ERROR, "Cannot find PDP CTX for " |
| 489 | "TLLI=%08x, NSAPI=%u\n", tlli, nsapi); |
| 490 | return -EIO; |
| 491 | } |
| 492 | if (!pdp->lib) { |
| 493 | LOGP(DGPRS, LOGL_ERROR, "PDP CTX without libgtp\n"); |
| 494 | return -EIO; |
| 495 | } |
Harald Welte | efbdee9 | 2010-06-10 00:20:12 +0200 | [diff] [blame] | 496 | |
| 497 | rate_ctr_inc(&pdp->ctrg->ctr[PDP_CTR_PKTS_UDATA_IN]); |
| 498 | rate_ctr_add(&pdp->ctrg->ctr[PDP_CTR_BYTES_UDATA_IN], npdu_len); |
| 499 | rate_ctr_inc(&mmctx->ctrg->ctr[GMM_CTR_PKTS_UDATA_IN]); |
| 500 | rate_ctr_add(&mmctx->ctrg->ctr[GMM_CTR_BYTES_UDATA_IN], npdu_len); |
| 501 | |
| 502 | return gtp_data_req(pdp->ggsn->gsn, pdp->lib, npdu, npdu_len); |
Harald Welte | ebabdea | 2010-06-01 18:28:10 +0200 | [diff] [blame] | 503 | } |
| 504 | |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 505 | /* libgtp select loop integration */ |
Pablo Neira Ayuso | 4db9299 | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 506 | static int sgsn_gtp_fd_cb(struct osmo_fd *fd, unsigned int what) |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 507 | { |
| 508 | struct sgsn_instance *sgi = fd->data; |
| 509 | int rc; |
| 510 | |
| 511 | if (!(what & BSC_FD_READ)) |
| 512 | return 0; |
| 513 | |
| 514 | switch (fd->priv_nr) { |
| 515 | case 0: |
| 516 | rc = gtp_decaps0(sgi->gsn); |
| 517 | break; |
| 518 | case 1: |
| 519 | rc = gtp_decaps1c(sgi->gsn); |
| 520 | break; |
| 521 | case 2: |
| 522 | rc = gtp_decaps1u(sgi->gsn); |
| 523 | break; |
Harald Welte | cd4dd4d | 2010-05-18 17:20:49 +0200 | [diff] [blame] | 524 | default: |
| 525 | rc = -EINVAL; |
| 526 | break; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 527 | } |
| 528 | return rc; |
| 529 | } |
| 530 | |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 531 | static void sgsn_gtp_tmr_start(struct sgsn_instance *sgi) |
| 532 | { |
Harald Welte | b4a3129 | 2010-05-18 18:24:53 +0200 | [diff] [blame] | 533 | struct timeval next; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 534 | |
| 535 | /* Retrieve next retransmission as struct timeval */ |
| 536 | gtp_retranstimeout(sgi->gsn, &next); |
| 537 | |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 538 | /* re-schedule the timer */ |
Pablo Neira Ayuso | bf540cb | 2011-05-06 12:11:06 +0200 | [diff] [blame] | 539 | osmo_timer_schedule(&sgi->gtp_timer, next.tv_sec, next.tv_usec/1000); |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 540 | } |
| 541 | |
| 542 | /* timer callback for libgtp retransmissions and ping */ |
| 543 | static void sgsn_gtp_tmr_cb(void *data) |
| 544 | { |
| 545 | struct sgsn_instance *sgi = data; |
| 546 | |
| 547 | /* Do all the retransmissions as needed */ |
| 548 | gtp_retrans(sgi->gsn); |
| 549 | |
| 550 | sgsn_gtp_tmr_start(sgi); |
| 551 | } |
| 552 | |
| 553 | int sgsn_gtp_init(struct sgsn_instance *sgi) |
| 554 | { |
| 555 | int rc; |
| 556 | struct gsn_t *gsn; |
| 557 | |
| 558 | rc = gtp_new(&sgi->gsn, sgi->cfg.gtp_statedir, |
| 559 | &sgi->cfg.gtp_listenaddr.sin_addr, GTP_MODE_SGSN); |
| 560 | if (rc) { |
| 561 | LOGP(DGPRS, LOGL_ERROR, "Failed to create GTP: %d\n", rc); |
| 562 | return rc; |
| 563 | } |
| 564 | gsn = sgi->gsn; |
| 565 | |
| 566 | sgi->gtp_fd0.fd = gsn->fd0; |
| 567 | sgi->gtp_fd0.priv_nr = 0; |
| 568 | sgi->gtp_fd0.data = sgi; |
Harald Welte | 322a5ee | 2010-05-18 13:13:11 +0200 | [diff] [blame] | 569 | sgi->gtp_fd0.when = BSC_FD_READ; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 570 | sgi->gtp_fd0.cb = sgsn_gtp_fd_cb; |
Pablo Neira Ayuso | 4db9299 | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 571 | rc = osmo_fd_register(&sgi->gtp_fd0); |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 572 | if (rc < 0) |
| 573 | return rc; |
| 574 | |
| 575 | sgi->gtp_fd1c.fd = gsn->fd1c; |
| 576 | sgi->gtp_fd1c.priv_nr = 1; |
| 577 | sgi->gtp_fd1c.data = sgi; |
Harald Welte | 322a5ee | 2010-05-18 13:13:11 +0200 | [diff] [blame] | 578 | sgi->gtp_fd1c.when = BSC_FD_READ; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 579 | sgi->gtp_fd1c.cb = sgsn_gtp_fd_cb; |
Pablo Neira Ayuso | 4db9299 | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 580 | osmo_fd_register(&sgi->gtp_fd1c); |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 581 | if (rc < 0) |
| 582 | return rc; |
| 583 | |
| 584 | sgi->gtp_fd1u.fd = gsn->fd1u; |
| 585 | sgi->gtp_fd1u.priv_nr = 2; |
| 586 | sgi->gtp_fd1u.data = sgi; |
Harald Welte | 322a5ee | 2010-05-18 13:13:11 +0200 | [diff] [blame] | 587 | sgi->gtp_fd1u.when = BSC_FD_READ; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 588 | sgi->gtp_fd1u.cb = sgsn_gtp_fd_cb; |
Pablo Neira Ayuso | 4db9299 | 2011-05-06 12:11:23 +0200 | [diff] [blame] | 589 | osmo_fd_register(&sgi->gtp_fd1u); |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 590 | if (rc < 0) |
| 591 | return rc; |
| 592 | |
| 593 | /* Start GTP re-transmission timer */ |
| 594 | sgi->gtp_timer.cb = sgsn_gtp_tmr_cb; |
Harald Welte | 51537ee | 2010-05-18 18:28:13 +0200 | [diff] [blame] | 595 | sgi->gtp_timer.data = sgi; |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 596 | sgsn_gtp_tmr_start(sgi); |
| 597 | |
| 598 | /* Register callbackcs with libgtp */ |
| 599 | gtp_set_cb_delete_context(gsn, cb_delete_context); |
| 600 | gtp_set_cb_conf(gsn, cb_conf); |
Harald Welte | a9b473a | 2010-12-24 21:13:26 +0100 | [diff] [blame] | 601 | gtp_set_cb_recovery(gsn, cb_recovery); |
Harald Welte | 2720e73 | 2010-05-17 00:44:57 +0200 | [diff] [blame] | 602 | gtp_set_cb_data_ind(gsn, cb_data_ind); |
| 603 | gtp_set_cb_unsup_ind(gsn, cb_unsup_ind); |
| 604 | gtp_set_cb_extheader_ind(gsn, cb_extheader_ind); |
| 605 | |
| 606 | return 0; |
| 607 | } |