Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1 | /* OpenBSC Abis input driver for ip.access */ |
| 2 | |
| 3 | /* (C) 2009 by Harald Welte <laforge@gnumonks.org> |
| 4 | * (C) 2010 by Holger Hans Peter Freyther |
| 5 | * (C) 2010 by On-Waves |
| 6 | * |
| 7 | * All Rights Reserved |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU Affero General Public License as published by |
| 11 | * the Free Software Foundation; either version 3 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU Affero General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU Affero General Public License |
| 20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include "internal.h" |
| 25 | |
| 26 | #include <stdio.h> |
| 27 | #include <unistd.h> |
| 28 | #include <stdlib.h> |
| 29 | #include <errno.h> |
| 30 | #include <string.h> |
| 31 | #include <time.h> |
| 32 | #include <sys/fcntl.h> |
| 33 | #include <sys/socket.h> |
| 34 | #include <sys/ioctl.h> |
| 35 | #include <arpa/inet.h> |
| 36 | |
| 37 | #include <osmocom/core/select.h> |
| 38 | #include <osmocom/gsm/tlv.h> |
| 39 | #include <osmocom/core/msgb.h> |
| 40 | #include <osmocom/core/logging.h> |
| 41 | #include <talloc.h> |
Pablo Neira Ayuso | 177094b | 2011-06-07 12:21:51 +0200 | [diff] [blame] | 42 | #include <osmocom/abis/e1_input.h> |
| 43 | #include <osmocom/abis/ipaccess.h> |
Pablo Neira Ayuso | f67471f | 2011-06-07 11:25:49 +0200 | [diff] [blame] | 44 | #include <osmocom/core/socket.h> |
Pablo Neira Ayuso | 0b099b2 | 2011-06-09 13:14:11 +0200 | [diff] [blame] | 45 | #include <osmocom/abis/logging.h> |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 46 | #include <osmocom/abis/ipa.h> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 47 | |
Pablo Neira Ayuso | 54b4979 | 2011-06-07 12:15:26 +0200 | [diff] [blame] | 48 | static void *tall_ipa_ctx; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 49 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 50 | #define TS1_ALLOC_SIZE 900 |
| 51 | |
| 52 | /* |
| 53 | * Common propietary IPA messages: |
| 54 | * - PONG: in reply to PING. |
| 55 | * - ID_REQUEST: first messages once OML has been established. |
| 56 | * - ID_ACK: in reply to ID_ACK. |
| 57 | */ |
| 58 | const uint8_t ipa_pong_msg[] = { |
| 59 | 0, 1, IPAC_PROTO_IPACCESS, IPAC_MSGT_PONG |
| 60 | }; |
| 61 | |
| 62 | const uint8_t ipa_id_ack_msg[] = { |
| 63 | 0, 1, IPAC_PROTO_IPACCESS, IPAC_MSGT_ID_ACK |
| 64 | }; |
| 65 | |
| 66 | const uint8_t ipa_id_req_msg[] = { |
| 67 | 0, 17, IPAC_PROTO_IPACCESS, IPAC_MSGT_ID_GET, |
| 68 | 0x01, IPAC_IDTAG_UNIT, |
| 69 | 0x01, IPAC_IDTAG_MACADDR, |
| 70 | 0x01, IPAC_IDTAG_LOCATION1, |
| 71 | 0x01, IPAC_IDTAG_LOCATION2, |
| 72 | 0x01, IPAC_IDTAG_EQUIPVERS, |
| 73 | 0x01, IPAC_IDTAG_SWVERSION, |
| 74 | 0x01, IPAC_IDTAG_UNITNAME, |
| 75 | 0x01, IPAC_IDTAG_SERNR, |
| 76 | }; |
| 77 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 78 | static const char *idtag_names[] = { |
| 79 | [IPAC_IDTAG_SERNR] = "Serial_Number", |
| 80 | [IPAC_IDTAG_UNITNAME] = "Unit_Name", |
| 81 | [IPAC_IDTAG_LOCATION1] = "Location_1", |
| 82 | [IPAC_IDTAG_LOCATION2] = "Location_2", |
| 83 | [IPAC_IDTAG_EQUIPVERS] = "Equipment_Version", |
| 84 | [IPAC_IDTAG_SWVERSION] = "Software_Version", |
| 85 | [IPAC_IDTAG_IPADDR] = "IP_Address", |
| 86 | [IPAC_IDTAG_MACADDR] = "MAC_Address", |
| 87 | [IPAC_IDTAG_UNIT] = "Unit_ID", |
| 88 | }; |
| 89 | |
| 90 | const char *ipaccess_idtag_name(uint8_t tag) |
| 91 | { |
| 92 | if (tag >= ARRAY_SIZE(idtag_names)) |
| 93 | return "unknown"; |
| 94 | |
| 95 | return idtag_names[tag]; |
| 96 | } |
| 97 | |
| 98 | int ipaccess_idtag_parse(struct tlv_parsed *dec, unsigned char *buf, int len) |
| 99 | { |
| 100 | uint8_t t_len; |
| 101 | uint8_t t_tag; |
| 102 | uint8_t *cur = buf; |
| 103 | |
| 104 | memset(dec, 0, sizeof(*dec)); |
| 105 | |
| 106 | while (len >= 2) { |
| 107 | len -= 2; |
| 108 | t_len = *cur++; |
| 109 | t_tag = *cur++; |
| 110 | |
| 111 | if (t_len > len + 1) { |
| 112 | LOGP(DMI, LOGL_ERROR, "The tag does not fit: %d\n", t_len); |
| 113 | return -EINVAL; |
| 114 | } |
| 115 | |
| 116 | DEBUGPC(DMI, "%s='%s' ", ipaccess_idtag_name(t_tag), cur); |
| 117 | |
| 118 | dec->lv[t_tag].len = t_len; |
| 119 | dec->lv[t_tag].val = cur; |
| 120 | |
| 121 | cur += t_len; |
| 122 | len -= t_len; |
| 123 | } |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | int ipaccess_parse_unitid(const char *str, struct ipaccess_unit *unit_data) |
| 128 | { |
| 129 | unsigned long ul; |
| 130 | char *endptr; |
| 131 | const char *nptr; |
| 132 | |
| 133 | nptr = str; |
| 134 | ul = strtoul(nptr, &endptr, 10); |
| 135 | if (endptr <= nptr) |
| 136 | return -EINVAL; |
Pablo Neira Ayuso | 62d345a | 2011-07-05 16:37:37 +0200 | [diff] [blame^] | 137 | unit_data->site_id = ul & 0xffff; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 138 | |
| 139 | if (*endptr++ != '/') |
| 140 | return -EINVAL; |
| 141 | |
| 142 | nptr = endptr; |
| 143 | ul = strtoul(nptr, &endptr, 10); |
| 144 | if (endptr <= nptr) |
| 145 | return -EINVAL; |
Pablo Neira Ayuso | 62d345a | 2011-07-05 16:37:37 +0200 | [diff] [blame^] | 146 | unit_data->bts_id = ul & 0xffff; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 147 | |
| 148 | if (*endptr++ != '/') |
| 149 | return -EINVAL; |
| 150 | |
| 151 | nptr = endptr; |
| 152 | ul = strtoul(nptr, &endptr, 10); |
| 153 | if (endptr <= nptr) |
| 154 | return -EINVAL; |
Pablo Neira Ayuso | 62d345a | 2011-07-05 16:37:37 +0200 | [diff] [blame^] | 155 | unit_data->trx_id = ul & 0xffff; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 156 | |
| 157 | return 0; |
| 158 | } |
| 159 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 160 | static int ipaccess_send(int fd, const void *msg, size_t msglen) |
| 161 | { |
| 162 | int ret; |
| 163 | |
| 164 | ret = write(fd, msg, msglen); |
| 165 | if (ret < 0) |
| 166 | return ret; |
| 167 | if (ret < msglen) { |
| 168 | LOGP(DINP, LOGL_ERROR, "ipaccess_send: short write\n"); |
| 169 | return -EIO; |
| 170 | } |
| 171 | return ret; |
| 172 | } |
| 173 | |
| 174 | int ipaccess_send_pong(int fd) |
| 175 | { |
| 176 | return ipaccess_send(fd, ipa_pong_msg, sizeof(ipa_pong_msg)); |
| 177 | } |
| 178 | |
| 179 | int ipaccess_send_id_ack(int fd) |
| 180 | { |
| 181 | return ipaccess_send(fd, ipa_id_ack_msg, sizeof(ipa_id_ack_msg)); |
| 182 | } |
| 183 | |
| 184 | int ipaccess_send_id_req(int fd) |
| 185 | { |
| 186 | return ipaccess_send(fd, ipa_id_req_msg, sizeof(ipa_id_req_msg)); |
| 187 | } |
| 188 | |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 189 | /* base handling of the ip.access protocol */ |
| 190 | int ipaccess_rcvmsg_base(struct msgb *msg, |
| 191 | struct osmo_fd *bfd) |
| 192 | { |
| 193 | uint8_t msg_type = *(msg->l2h); |
| 194 | int ret = 0; |
| 195 | |
| 196 | switch (msg_type) { |
| 197 | case IPAC_MSGT_PING: |
| 198 | ret = ipaccess_send_pong(bfd->fd); |
| 199 | break; |
| 200 | case IPAC_MSGT_PONG: |
| 201 | DEBUGP(DMI, "PONG!\n"); |
| 202 | break; |
| 203 | case IPAC_MSGT_ID_ACK: |
| 204 | DEBUGP(DMI, "ID_ACK? -> ACK!\n"); |
| 205 | ret = ipaccess_send_id_ack(bfd->fd); |
| 206 | break; |
| 207 | } |
| 208 | return 0; |
| 209 | } |
| 210 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 211 | /* base handling of the ip.access protocol */ |
| 212 | int ipaccess_rcvmsg_bts_base(struct msgb *msg, |
| 213 | struct osmo_fd *bfd) |
| 214 | { |
| 215 | uint8_t msg_type = *(msg->l2h); |
| 216 | int ret = 0; |
| 217 | |
| 218 | switch (msg_type) { |
| 219 | case IPAC_MSGT_PING: |
| 220 | ret = ipaccess_send_pong(bfd->fd); |
| 221 | break; |
| 222 | case IPAC_MSGT_PONG: |
| 223 | DEBUGP(DMI, "PONG!\n"); |
| 224 | break; |
| 225 | case IPAC_MSGT_ID_ACK: |
| 226 | DEBUGP(DMI, "ID_ACK\n"); |
| 227 | break; |
| 228 | } |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | static void ipaccess_drop(struct osmo_fd *bfd) |
| 233 | { |
| 234 | struct e1inp_line *line = bfd->data; |
| 235 | |
| 236 | /* e1inp_sign_link_destroy releases the socket descriptors for us. */ |
| 237 | line->ops->sign_link_down(line); |
| 238 | |
| 239 | /* RSL connection without ID_RESP, release temporary socket. */ |
| 240 | if (line->ts[E1INP_SIGN_OML-1].type == E1INP_SIGN_NONE) |
| 241 | talloc_free(bfd); |
| 242 | } |
| 243 | |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 244 | static int ipaccess_rcvmsg(struct e1inp_line *line, struct msgb *msg, |
| 245 | struct osmo_fd *bfd) |
| 246 | { |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 247 | struct tlv_parsed tlvp; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 248 | uint8_t msg_type = *(msg->l2h); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 249 | struct ipaccess_unit unit_data = {}; |
| 250 | struct e1inp_sign_link *sign_link; |
| 251 | char *unitid; |
| 252 | int len, ret; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 253 | |
| 254 | /* handle base messages */ |
| 255 | ipaccess_rcvmsg_base(msg, bfd); |
| 256 | |
| 257 | switch (msg_type) { |
| 258 | case IPAC_MSGT_ID_RESP: |
| 259 | DEBUGP(DMI, "ID_RESP\n"); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 260 | /* parse tags, search for Unit ID */ |
| 261 | ret = ipaccess_idtag_parse(&tlvp, (uint8_t *)msg->l2h + 2, |
| 262 | msgb_l2len(msg)-2); |
| 263 | DEBUGP(DMI, "\n"); |
| 264 | if (ret < 0) { |
| 265 | LOGP(DINP, LOGL_ERROR, "ignoring IPA response message " |
| 266 | "with malformed TLVs\n"); |
| 267 | return ret; |
| 268 | } |
| 269 | if (!TLVP_PRESENT(&tlvp, IPAC_IDTAG_UNIT)) |
| 270 | break; |
| 271 | |
| 272 | len = TLVP_LEN(&tlvp, IPAC_IDTAG_UNIT); |
| 273 | if (len < 1) |
| 274 | break; |
| 275 | |
| 276 | unitid = (char *) TLVP_VAL(&tlvp, IPAC_IDTAG_UNIT); |
| 277 | unitid[len - 1] = '\0'; |
| 278 | ipaccess_parse_unitid(unitid, &unit_data); |
| 279 | |
Pablo Neira Ayuso | f163d23 | 2011-06-25 18:42:55 +0200 | [diff] [blame] | 280 | if (!line->ops->sign_link_up) { |
Pablo Neira Ayuso | cd8d2e5 | 2011-07-02 17:05:21 +0200 | [diff] [blame] | 281 | LOGP(DINP, LOGL_ERROR, |
| 282 | "Unable to set signal link, closing socket.\n"); |
| 283 | osmo_fd_unregister(bfd); |
| 284 | close(bfd->fd); |
| 285 | bfd->fd = -1; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 286 | return -EINVAL; |
| 287 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 288 | /* the BSC creates the new sign links at this stage. */ |
| 289 | if (bfd->priv_nr == E1INP_SIGN_OML) { |
| 290 | sign_link = |
| 291 | line->ops->sign_link_up(&unit_data, line, |
| 292 | E1INP_SIGN_OML); |
| 293 | if (sign_link == NULL) { |
| 294 | LOGP(DINP, LOGL_ERROR, |
Pablo Neira Ayuso | cd8d2e5 | 2011-07-02 17:05:21 +0200 | [diff] [blame] | 295 | "Unable to set signal link, " |
| 296 | "closing socket.\n"); |
| 297 | osmo_fd_unregister(bfd); |
| 298 | close(bfd->fd); |
| 299 | bfd->fd = -1; |
| 300 | return -EINVAL; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 301 | } |
| 302 | } else if (bfd->priv_nr == E1INP_SIGN_RSL) { |
| 303 | struct e1inp_ts *e1i_ts; |
| 304 | struct osmo_fd *newbfd; |
| 305 | |
| 306 | sign_link = |
| 307 | line->ops->sign_link_up(&unit_data, line, |
| 308 | E1INP_SIGN_RSL); |
| 309 | if (sign_link == NULL) { |
Pablo Neira Ayuso | cd8d2e5 | 2011-07-02 17:05:21 +0200 | [diff] [blame] | 310 | LOGP(DINP, LOGL_ERROR, |
| 311 | "Unable to set signal link, " |
| 312 | "closing socket.\n"); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 313 | osmo_fd_unregister(bfd); |
| 314 | close(bfd->fd); |
| 315 | bfd->fd = -1; |
| 316 | talloc_free(bfd); |
| 317 | return 0; |
| 318 | } |
| 319 | /* Finally, we know which OML link is associated with |
| 320 | * this RSL link, attach it to this socket. */ |
| 321 | bfd->data = line = sign_link->ts->line; |
| 322 | e1i_ts = &line->ts[E1INP_SIGN_RSL+unit_data.trx_id-1]; |
| 323 | newbfd = &e1i_ts->driver.ipaccess.fd; |
| 324 | |
| 325 | /* get rid of our old temporary bfd */ |
| 326 | memcpy(newbfd, bfd, sizeof(*newbfd)); |
| 327 | newbfd->priv_nr = E1INP_SIGN_RSL + unit_data.trx_id; |
| 328 | osmo_fd_unregister(bfd); |
| 329 | bfd->fd = -1; |
| 330 | talloc_free(bfd); |
| 331 | osmo_fd_register(newbfd); |
| 332 | } |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 333 | break; |
| 334 | } |
| 335 | return 0; |
| 336 | } |
| 337 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 338 | static int handle_ts1_read(struct osmo_fd *bfd) |
| 339 | { |
| 340 | struct e1inp_line *line = bfd->data; |
| 341 | unsigned int ts_nr = bfd->priv_nr; |
Pablo Neira Ayuso | 29465d3 | 2011-06-21 14:21:33 +0200 | [diff] [blame] | 342 | struct e1inp_ts *e1i_ts = NULL; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 343 | struct e1inp_sign_link *link; |
| 344 | struct ipaccess_head *hh; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 345 | struct msgb *msg; |
| 346 | int ret = 0, error; |
| 347 | |
Pablo Neira Ayuso | 7a24940 | 2011-06-21 14:15:46 +0200 | [diff] [blame] | 348 | error = ipa_msg_recv(bfd->fd, &msg); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 349 | if (error < 0) |
| 350 | return error; |
| 351 | else if (error == 0) { |
| 352 | ipaccess_drop(bfd); |
| 353 | LOGP(DINP, LOGL_NOTICE, "Sign link vanished, dead socket\n"); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 354 | return error; |
| 355 | } |
| 356 | DEBUGP(DMI, "RX %u: %s\n", ts_nr, osmo_hexdump(msgb_l2(msg), msgb_l2len(msg))); |
| 357 | |
Pablo Neira Ayuso | 29465d3 | 2011-06-21 14:21:33 +0200 | [diff] [blame] | 358 | /* Now that we're sure that we've got a line for socket. */ |
| 359 | e1i_ts = &line->ts[ts_nr-1]; |
| 360 | |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 361 | hh = (struct ipaccess_head *) msg->data; |
| 362 | if (hh->proto == IPAC_PROTO_IPACCESS) { |
| 363 | ipaccess_rcvmsg(line, msg, bfd); |
| 364 | msgb_free(msg); |
| 365 | return ret; |
| 366 | } |
| 367 | /* BIG FAT WARNING: bfd might no longer exist here, since ipaccess_rcvmsg() |
| 368 | * might have free'd it !!! */ |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 369 | |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 370 | link = e1inp_lookup_sign_link(e1i_ts, hh->proto, 0); |
| 371 | if (!link) { |
| 372 | LOGP(DINP, LOGL_ERROR, "no matching signalling link for " |
| 373 | "hh->proto=0x%02x\n", hh->proto); |
| 374 | msgb_free(msg); |
| 375 | return -EIO; |
| 376 | } |
| 377 | msg->dst = link; |
| 378 | |
| 379 | /* XXX better use e1inp_ts_rx? */ |
Pablo Neira Ayuso | f163d23 | 2011-06-25 18:42:55 +0200 | [diff] [blame] | 380 | if (!e1i_ts->line->ops->sign_link) { |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 381 | LOGP(DINP, LOGL_ERROR, "Fix your application, " |
| 382 | "no action set for signalling messages.\n"); |
| 383 | return -ENOENT; |
| 384 | } |
Pablo Neira Ayuso | dbd82fb | 2011-07-05 15:29:23 +0200 | [diff] [blame] | 385 | e1i_ts->line->ops->sign_link(msg); |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 386 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 387 | return ret; |
| 388 | } |
| 389 | |
| 390 | void ipaccess_prepend_header_ext(struct msgb *msg, int proto) |
| 391 | { |
| 392 | struct ipaccess_head_ext *hh_ext; |
| 393 | |
| 394 | /* prepend the osmo ip.access header extension */ |
| 395 | hh_ext = (struct ipaccess_head_ext *) msgb_push(msg, sizeof(*hh_ext)); |
| 396 | hh_ext->proto = proto; |
| 397 | } |
| 398 | |
| 399 | void ipaccess_prepend_header(struct msgb *msg, int proto) |
| 400 | { |
| 401 | struct ipaccess_head *hh; |
| 402 | |
| 403 | /* prepend the ip.access header */ |
| 404 | hh = (struct ipaccess_head *) msgb_push(msg, sizeof(*hh)); |
| 405 | hh->len = htons(msg->len - sizeof(*hh)); |
| 406 | hh->proto = proto; |
| 407 | } |
| 408 | |
| 409 | static int ts_want_write(struct e1inp_ts *e1i_ts) |
| 410 | { |
| 411 | e1i_ts->driver.ipaccess.fd.when |= BSC_FD_WRITE; |
| 412 | |
| 413 | return 0; |
| 414 | } |
| 415 | |
Pablo Neira Ayuso | add3ec8 | 2011-07-05 14:45:46 +0200 | [diff] [blame] | 416 | static void ipaccess_close(struct e1inp_sign_link *sign_link) |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 417 | { |
Pablo Neira Ayuso | add3ec8 | 2011-07-05 14:45:46 +0200 | [diff] [blame] | 418 | struct e1inp_ts *e1i_ts = sign_link->ts; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 419 | struct osmo_fd *bfd = &e1i_ts->driver.ipaccess.fd; |
Pablo Neira Ayuso | add3ec8 | 2011-07-05 14:45:46 +0200 | [diff] [blame] | 420 | e1inp_event(e1i_ts, S_INP_TEI_DN, sign_link->tei, sign_link->sapi); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 421 | osmo_fd_unregister(bfd); |
| 422 | close(bfd->fd); |
| 423 | bfd->fd = -1; |
| 424 | } |
| 425 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 426 | static void timeout_ts1_write(void *data) |
| 427 | { |
| 428 | struct e1inp_ts *e1i_ts = (struct e1inp_ts *)data; |
| 429 | |
| 430 | /* trigger write of ts1, due to tx delay timer */ |
| 431 | ts_want_write(e1i_ts); |
| 432 | } |
| 433 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 434 | static int __handle_ts1_write(struct osmo_fd *bfd, struct e1inp_line *line) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 435 | { |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 436 | unsigned int ts_nr = bfd->priv_nr; |
| 437 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 438 | struct e1inp_sign_link *sign_link; |
| 439 | struct msgb *msg; |
| 440 | uint8_t proto; |
| 441 | int ret; |
| 442 | |
| 443 | bfd->when &= ~BSC_FD_WRITE; |
| 444 | |
| 445 | /* get the next msg for this timeslot */ |
| 446 | msg = e1inp_tx_ts(e1i_ts, &sign_link); |
| 447 | if (!msg) { |
| 448 | /* no message after tx delay timer */ |
| 449 | return 0; |
| 450 | } |
| 451 | |
| 452 | switch (sign_link->type) { |
| 453 | case E1INP_SIGN_OML: |
| 454 | proto = IPAC_PROTO_OML; |
| 455 | break; |
| 456 | case E1INP_SIGN_RSL: |
| 457 | proto = IPAC_PROTO_RSL; |
| 458 | break; |
| 459 | default: |
| 460 | msgb_free(msg); |
| 461 | bfd->when |= BSC_FD_WRITE; /* come back for more msg */ |
| 462 | return -EINVAL; |
| 463 | } |
| 464 | |
| 465 | msg->l2h = msg->data; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 466 | /* This is an IPA CCM, it already contains the header, skip. */ |
| 467 | if (msgb_tailroom(msg) < sizeof(struct ipaccess_head)) |
| 468 | ipaccess_prepend_header(msg, sign_link->tei); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 469 | |
| 470 | DEBUGP(DMI, "TX %u: %s\n", ts_nr, osmo_hexdump(msg->l2h, msgb_l2len(msg))); |
| 471 | |
| 472 | ret = send(bfd->fd, msg->data, msg->len, 0); |
| 473 | msgb_free(msg); |
| 474 | |
| 475 | /* set tx delay timer for next event */ |
| 476 | e1i_ts->sign.tx_timer.cb = timeout_ts1_write; |
| 477 | e1i_ts->sign.tx_timer.data = e1i_ts; |
| 478 | |
| 479 | /* Reducing this might break the nanoBTS 900 init. */ |
| 480 | osmo_timer_schedule(&e1i_ts->sign.tx_timer, 0, e1i_ts->sign.delay); |
| 481 | |
| 482 | return ret; |
| 483 | } |
| 484 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 485 | int handle_ts1_write(struct osmo_fd *bfd) |
| 486 | { |
| 487 | struct e1inp_line *line = bfd->data; |
| 488 | |
| 489 | return __handle_ts1_write(bfd, line); |
| 490 | } |
| 491 | |
| 492 | int ipaccess_bts_write_cb(struct ipa_client_link *link) |
| 493 | { |
| 494 | struct e1inp_line *line = link->line; |
| 495 | |
| 496 | return __handle_ts1_write(link->ofd, line); |
| 497 | } |
| 498 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 499 | /* callback from select.c in case one of the fd's can be read/written */ |
| 500 | static int ipaccess_fd_cb(struct osmo_fd *bfd, unsigned int what) |
| 501 | { |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 502 | int rc = 0; |
| 503 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 504 | if (what & BSC_FD_READ) |
| 505 | rc = handle_ts1_read(bfd); |
| 506 | if (what & BSC_FD_WRITE) |
| 507 | rc = handle_ts1_write(bfd); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 508 | |
| 509 | return rc; |
| 510 | } |
| 511 | |
Pablo Neira Ayuso | c00ee73 | 2011-06-21 12:22:49 +0200 | [diff] [blame] | 512 | static int ipaccess_line_update(struct e1inp_line *line, |
| 513 | enum e1inp_line_role role, const char *addr); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 514 | |
| 515 | struct e1inp_driver ipaccess_driver = { |
| 516 | .name = "ipa", |
| 517 | .want_write = ts_want_write, |
| 518 | .line_update = ipaccess_line_update, |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 519 | .close = ipaccess_close, |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 520 | .default_delay = 0, |
| 521 | }; |
| 522 | |
| 523 | /* callback of the OML listening filedescriptor */ |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 524 | static int ipaccess_bsc_oml_cb(struct ipa_server_link *link, int fd) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 525 | { |
| 526 | int ret; |
| 527 | int idx = 0; |
| 528 | int i; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 529 | struct e1inp_line *line; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 530 | struct e1inp_ts *e1i_ts; |
| 531 | struct osmo_fd *bfd; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 532 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 533 | /* clone virtual E1 line for this new OML link. */ |
| 534 | line = talloc_zero(tall_ipa_ctx, struct e1inp_line); |
| 535 | if (line == NULL) { |
| 536 | LOGP(DINP, LOGL_ERROR, "could not clone E1 line\n"); |
| 537 | return -1; |
| 538 | } |
| 539 | memcpy(line, link->line, sizeof(struct e1inp_line)); |
| 540 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 541 | /* create virrtual E1 timeslots for signalling */ |
Pablo Neira Ayuso | 5930185 | 2011-06-27 15:44:23 +0200 | [diff] [blame] | 542 | e1inp_ts_config_sign(&line->ts[E1INP_SIGN_OML-1], line); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 543 | |
| 544 | /* initialize the fds */ |
| 545 | for (i = 0; i < ARRAY_SIZE(line->ts); ++i) |
| 546 | line->ts[i].driver.ipaccess.fd.fd = -1; |
| 547 | |
| 548 | e1i_ts = &line->ts[idx]; |
| 549 | |
Pablo Neira Ayuso | 93c6201 | 2011-06-26 19:12:47 +0200 | [diff] [blame] | 550 | bfd = &e1i_ts->driver.ipaccess.fd; |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 551 | bfd->fd = fd; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 552 | bfd->data = line; |
Pablo Neira Ayuso | f163d23 | 2011-06-25 18:42:55 +0200 | [diff] [blame] | 553 | bfd->priv_nr = E1INP_SIGN_OML; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 554 | bfd->cb = ipaccess_fd_cb; |
| 555 | bfd->when = BSC_FD_READ; |
| 556 | ret = osmo_fd_register(bfd); |
| 557 | if (ret < 0) { |
| 558 | LOGP(DINP, LOGL_ERROR, "could not register FD\n"); |
| 559 | close(bfd->fd); |
| 560 | return ret; |
| 561 | } |
| 562 | |
| 563 | /* Request ID. FIXME: request LOCATION, HW/SW VErsion, Unit Name, Serno */ |
| 564 | ret = ipaccess_send_id_req(bfd->fd); |
| 565 | |
| 566 | return ret; |
| 567 | } |
| 568 | |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 569 | static int ipaccess_bsc_rsl_cb(struct ipa_server_link *link, int fd) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 570 | { |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 571 | struct osmo_fd *bfd; |
| 572 | int ret; |
| 573 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 574 | /* We don't know yet which OML link to associate it with. Thus, we |
| 575 | * allocate a temporary bfd until we have received ID. */ |
Pablo Neira Ayuso | 54b4979 | 2011-06-07 12:15:26 +0200 | [diff] [blame] | 576 | bfd = talloc_zero(tall_ipa_ctx, struct osmo_fd); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 577 | if (!bfd) |
| 578 | return -ENOMEM; |
| 579 | |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 580 | bfd->fd = fd; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 581 | /* This dummy line is replaced once we can attach it to the OML link */ |
| 582 | bfd->data = link->line; |
Pablo Neira Ayuso | f163d23 | 2011-06-25 18:42:55 +0200 | [diff] [blame] | 583 | bfd->priv_nr = E1INP_SIGN_RSL; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 584 | bfd->cb = ipaccess_fd_cb; |
| 585 | bfd->when = BSC_FD_READ; |
| 586 | ret = osmo_fd_register(bfd); |
| 587 | if (ret < 0) { |
| 588 | LOGP(DINP, LOGL_ERROR, "could not register FD\n"); |
| 589 | close(bfd->fd); |
| 590 | talloc_free(bfd); |
| 591 | return ret; |
| 592 | } |
| 593 | /* Request ID. FIXME: request LOCATION, HW/SW VErsion, Unit Name, Serno */ |
| 594 | ret = ipaccess_send_id_req(bfd->fd); |
| 595 | |
| 596 | return 0; |
| 597 | } |
| 598 | |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 599 | static struct msgb *abis_msgb_alloc(int headroom) |
| 600 | { |
| 601 | struct msgb *nmsg; |
| 602 | |
| 603 | headroom += sizeof(struct ipaccess_head); |
| 604 | |
| 605 | nmsg = msgb_alloc_headroom(1200 + headroom, headroom, "dummy BTS"); |
| 606 | if (!nmsg) |
| 607 | return NULL; |
| 608 | return nmsg; |
| 609 | } |
| 610 | |
| 611 | static void abis_push_ipa(struct msgb *msg, uint8_t proto) |
| 612 | { |
| 613 | struct ipaccess_head *nhh; |
| 614 | |
| 615 | msg->l2h = msg->data; |
| 616 | nhh = (struct ipaccess_head *) msgb_push(msg, sizeof(*nhh)); |
| 617 | nhh->proto = proto; |
| 618 | nhh->len = htons(msgb_l2len(msg)); |
| 619 | } |
| 620 | |
| 621 | static struct msgb * |
| 622 | ipa_bts_id_resp(struct ipaccess_unit *dev, uint8_t *data, int len) |
| 623 | { |
| 624 | struct msgb *nmsg; |
| 625 | char str[64]; |
| 626 | uint8_t *tag; |
| 627 | |
| 628 | nmsg = abis_msgb_alloc(0); |
| 629 | if (!nmsg) |
| 630 | return NULL; |
| 631 | |
| 632 | *msgb_put(nmsg, 1) = IPAC_MSGT_ID_RESP; |
| 633 | while (len) { |
| 634 | if (len < 2) { |
| 635 | LOGP(DINP, LOGL_NOTICE, |
| 636 | "Short read of ipaccess tag\n"); |
| 637 | msgb_free(nmsg); |
| 638 | return NULL; |
| 639 | } |
| 640 | switch (data[1]) { |
| 641 | case IPAC_IDTAG_UNIT: |
| 642 | sprintf(str, "%u/%u/%u", |
| 643 | dev->site_id, dev->bts_id, dev->trx_id); |
| 644 | break; |
| 645 | case IPAC_IDTAG_MACADDR: |
| 646 | sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x", |
| 647 | dev->mac_addr[0], dev->mac_addr[1], |
| 648 | dev->mac_addr[2], dev->mac_addr[3], |
| 649 | dev->mac_addr[4], dev->mac_addr[5]); |
| 650 | break; |
| 651 | case IPAC_IDTAG_LOCATION1: |
| 652 | strcpy(str, dev->location1); |
| 653 | break; |
| 654 | case IPAC_IDTAG_LOCATION2: |
| 655 | strcpy(str, dev->location2); |
| 656 | break; |
| 657 | case IPAC_IDTAG_EQUIPVERS: |
| 658 | strcpy(str, dev->equipvers); |
| 659 | break; |
| 660 | case IPAC_IDTAG_SWVERSION: |
| 661 | strcpy(str, dev->swversion); |
| 662 | break; |
| 663 | case IPAC_IDTAG_UNITNAME: |
| 664 | sprintf(str, "%s-%02x-%02x-%02x-%02x-%02x-%02x", |
| 665 | dev->unit_name, |
| 666 | dev->mac_addr[0], dev->mac_addr[1], |
| 667 | dev->mac_addr[2], dev->mac_addr[3], |
| 668 | dev->mac_addr[4], dev->mac_addr[5]); |
| 669 | break; |
| 670 | case IPAC_IDTAG_SERNR: |
| 671 | strcpy(str, dev->serno); |
| 672 | break; |
| 673 | default: |
| 674 | LOGP(DINP, LOGL_NOTICE, |
| 675 | "Unknown ipaccess tag 0x%02x\n", *data); |
| 676 | msgb_free(nmsg); |
| 677 | return NULL; |
| 678 | } |
| 679 | LOGP(DINP, LOGL_INFO, " tag %d: %s\n", data[1], str); |
| 680 | tag = msgb_put(nmsg, 3 + strlen(str) + 1); |
| 681 | tag[0] = 0x00; |
| 682 | tag[1] = 1 + strlen(str) + 1; |
| 683 | tag[2] = data[1]; |
| 684 | memcpy(tag + 3, str, strlen(str) + 1); |
| 685 | data += 2; |
| 686 | len -= 2; |
| 687 | } |
| 688 | abis_push_ipa(nmsg, IPAC_PROTO_IPACCESS); |
| 689 | return nmsg; |
| 690 | } |
| 691 | |
| 692 | static struct msgb *ipa_bts_id_ack(void) |
| 693 | { |
| 694 | struct msgb *nmsg2; |
| 695 | |
| 696 | nmsg2 = abis_msgb_alloc(0); |
| 697 | if (!nmsg2) |
| 698 | return NULL; |
| 699 | |
| 700 | *msgb_put(nmsg2, 1) = IPAC_MSGT_ID_ACK; |
| 701 | abis_push_ipa(nmsg2, IPAC_PROTO_IPACCESS); |
| 702 | |
| 703 | return nmsg2; |
| 704 | } |
| 705 | |
Pablo Neira Ayuso | c07a8e7 | 2011-06-21 19:50:04 +0200 | [diff] [blame] | 706 | static int ipaccess_bts_cb(struct ipa_client_link *link, struct msgb *msg) |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 707 | { |
| 708 | struct ipaccess_head *hh = (struct ipaccess_head *) msg->data; |
| 709 | struct e1inp_ts *e1i_ts = NULL; |
| 710 | struct e1inp_sign_link *sign_link; |
| 711 | |
| 712 | /* special handling for IPA CCM. */ |
| 713 | if (hh->proto == IPAC_PROTO_IPACCESS) { |
| 714 | uint8_t msg_type = *(msg->l2h); |
| 715 | |
| 716 | /* ping, pong and acknowledgment cases. */ |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 717 | ipaccess_rcvmsg_bts_base(msg, link->ofd); |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 718 | |
| 719 | /* this is a request for identification from the BSC. */ |
| 720 | if (msg_type == IPAC_MSGT_ID_GET) { |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 721 | struct e1inp_sign_link *sign_link; |
| 722 | struct msgb *rmsg; |
| 723 | uint8_t *data = msgb_l2(msg); |
| 724 | int len = msgb_l2len(msg); |
| 725 | |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 726 | LOGP(DINP, LOGL_NOTICE, "received ID get\n"); |
Pablo Neira Ayuso | f163d23 | 2011-06-25 18:42:55 +0200 | [diff] [blame] | 727 | if (!link->line->ops->sign_link_up) { |
Pablo Neira Ayuso | cd8d2e5 | 2011-07-02 17:05:21 +0200 | [diff] [blame] | 728 | LOGP(DINP, LOGL_ERROR, |
| 729 | "Unable to set signal link, " |
| 730 | "closing socket.\n"); |
| 731 | osmo_fd_unregister(link->ofd); |
| 732 | close(link->ofd->fd); |
| 733 | link->ofd->fd = -1; |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 734 | return -EINVAL; |
| 735 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 736 | sign_link = link->line->ops->sign_link_up(msg, |
| 737 | link->line, |
| 738 | link->ofd->priv_nr); |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 739 | if (sign_link == NULL) { |
| 740 | LOGP(DINP, LOGL_ERROR, |
Pablo Neira Ayuso | cd8d2e5 | 2011-07-02 17:05:21 +0200 | [diff] [blame] | 741 | "Unable to set signal link, " |
| 742 | "closing socket.\n"); |
| 743 | osmo_fd_unregister(link->ofd); |
| 744 | close(link->ofd->fd); |
| 745 | link->ofd->fd = -1; |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 746 | return -EINVAL; |
| 747 | } |
| 748 | rmsg = ipa_bts_id_resp(link->line->ops->data, |
| 749 | data + 1, len - 1); |
| 750 | ipaccess_send(link->ofd->fd, rmsg->data, rmsg->len); |
| 751 | msgb_free(rmsg); |
| 752 | |
| 753 | /* send ID_ACK. */ |
| 754 | rmsg = ipa_bts_id_ack(); |
| 755 | ipaccess_send(link->ofd->fd, rmsg->data, rmsg->len); |
| 756 | msgb_free(rmsg); |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 757 | } |
| 758 | return 0; |
| 759 | } else if (link->port == IPA_TCP_PORT_OML) |
| 760 | e1i_ts = &link->line->ts[0]; |
| 761 | else if (link->port == IPA_TCP_PORT_RSL) |
| 762 | e1i_ts = &link->line->ts[1]; |
| 763 | |
| 764 | /* look up for some existing signaling link. */ |
| 765 | sign_link = e1inp_lookup_sign_link(e1i_ts, hh->proto, 0); |
| 766 | if (sign_link == NULL) { |
| 767 | LOGP(DINP, LOGL_ERROR, "no matching signalling link for " |
| 768 | "hh->proto=0x%02x\n", hh->proto); |
| 769 | msgb_free(msg); |
| 770 | return -EIO; |
| 771 | } |
| 772 | msg->dst = sign_link; |
| 773 | |
| 774 | /* XXX better use e1inp_ts_rx? */ |
Pablo Neira Ayuso | f163d23 | 2011-06-25 18:42:55 +0200 | [diff] [blame] | 775 | if (!link->line->ops->sign_link) { |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 776 | LOGP(DINP, LOGL_ERROR, "Fix your application, " |
| 777 | "no action set for signalling messages.\n"); |
| 778 | return -ENOENT; |
| 779 | } |
Pablo Neira Ayuso | dbd82fb | 2011-07-05 15:29:23 +0200 | [diff] [blame] | 780 | link->line->ops->sign_link(msg); |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 781 | return 0; |
| 782 | } |
| 783 | |
Pablo Neira Ayuso | c00ee73 | 2011-06-21 12:22:49 +0200 | [diff] [blame] | 784 | static int ipaccess_line_update(struct e1inp_line *line, |
| 785 | enum e1inp_line_role role, const char *addr) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 786 | { |
| 787 | int ret = -ENOENT; |
| 788 | |
| 789 | switch(role) { |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 790 | case E1INP_LINE_R_BSC: { |
| 791 | struct ipa_server_link *oml_link, *rsl_link; |
| 792 | |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 793 | LOGP(DINP, LOGL_NOTICE, "enabling ipaccess BSC mode\n"); |
| 794 | |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 795 | oml_link = ipa_server_link_create(tall_ipa_ctx, line, |
| 796 | "0.0.0.0", IPA_TCP_PORT_OML, |
Pablo Neira Ayuso | e009f4a | 2011-06-23 13:36:34 +0200 | [diff] [blame] | 797 | ipaccess_bsc_oml_cb, NULL); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 798 | if (oml_link == NULL) { |
| 799 | LOGP(DINP, LOGL_ERROR, "cannot create OML " |
| 800 | "BSC link: %s\n", strerror(errno)); |
| 801 | return -ENOMEM; |
Pablo Neira Ayuso | f67471f | 2011-06-07 11:25:49 +0200 | [diff] [blame] | 802 | } |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 803 | if (ipa_server_link_open(oml_link) < 0) { |
| 804 | LOGP(DINP, LOGL_ERROR, "cannot open OML BSC link: %s\n", |
| 805 | strerror(errno)); |
| 806 | ipa_server_link_close(oml_link); |
| 807 | ipa_server_link_destroy(oml_link); |
| 808 | return -EIO; |
Pablo Neira Ayuso | f67471f | 2011-06-07 11:25:49 +0200 | [diff] [blame] | 809 | } |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 810 | rsl_link = ipa_server_link_create(tall_ipa_ctx, line, |
| 811 | "0.0.0.0", IPA_TCP_PORT_RSL, |
Pablo Neira Ayuso | e009f4a | 2011-06-23 13:36:34 +0200 | [diff] [blame] | 812 | ipaccess_bsc_rsl_cb, NULL); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 813 | if (rsl_link == NULL) { |
| 814 | LOGP(DINP, LOGL_ERROR, "cannot create RSL " |
| 815 | "BSC link: %s\n", strerror(errno)); |
| 816 | return -ENOMEM; |
| 817 | } |
| 818 | if (ipa_server_link_open(rsl_link) < 0) { |
| 819 | LOGP(DINP, LOGL_ERROR, "cannot open RSL BSC link: %s\n", |
| 820 | strerror(errno)); |
| 821 | ipa_server_link_close(rsl_link); |
| 822 | ipa_server_link_destroy(rsl_link); |
| 823 | return -EIO; |
| 824 | } |
| 825 | ret = 0; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 826 | break; |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 827 | } |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 828 | case E1INP_LINE_R_BTS: { |
Pablo Neira Ayuso | c07a8e7 | 2011-06-21 19:50:04 +0200 | [diff] [blame] | 829 | struct ipa_client_link *link, *rsl_link; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 830 | |
| 831 | LOGP(DINP, LOGL_NOTICE, "enabling ipaccess BTS mode\n"); |
| 832 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 833 | link = ipa_client_link_create(tall_ipa_ctx, |
| 834 | &line->ts[E1INP_SIGN_OML-1], |
| 835 | "ipa", E1INP_SIGN_OML, |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 836 | addr, IPA_TCP_PORT_OML, |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 837 | ipaccess_bts_cb, |
| 838 | ipaccess_bts_write_cb, |
| 839 | NULL); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 840 | if (link == NULL) { |
Pablo Neira Ayuso | 29465d3 | 2011-06-21 14:21:33 +0200 | [diff] [blame] | 841 | LOGP(DINP, LOGL_ERROR, "cannot create OML " |
| 842 | "BTS link: %s\n", strerror(errno)); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 843 | return -ENOMEM; |
| 844 | } |
| 845 | if (ipa_client_link_open(link) < 0) { |
Pablo Neira Ayuso | 29465d3 | 2011-06-21 14:21:33 +0200 | [diff] [blame] | 846 | LOGP(DINP, LOGL_ERROR, "cannot open OML BTS link: %s\n", |
| 847 | strerror(errno)); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 848 | ipa_client_link_close(link); |
| 849 | ipa_client_link_destroy(link); |
| 850 | return -EIO; |
| 851 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 852 | rsl_link = ipa_client_link_create(tall_ipa_ctx, |
| 853 | &line->ts[E1INP_SIGN_RSL-1], |
| 854 | "ipa", E1INP_SIGN_RSL, |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 855 | addr, IPA_TCP_PORT_RSL, |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 856 | ipaccess_bts_cb, |
| 857 | ipaccess_bts_write_cb, |
| 858 | NULL); |
Pablo Neira Ayuso | 29465d3 | 2011-06-21 14:21:33 +0200 | [diff] [blame] | 859 | if (rsl_link == NULL) { |
| 860 | LOGP(DINP, LOGL_ERROR, "cannot create RSL " |
| 861 | "BTS link: %s\n", strerror(errno)); |
| 862 | return -ENOMEM; |
| 863 | } |
| 864 | if (ipa_client_link_open(rsl_link) < 0) { |
| 865 | LOGP(DINP, LOGL_ERROR, "cannot open RSL BTS link: %s\n", |
| 866 | strerror(errno)); |
| 867 | ipa_client_link_close(rsl_link); |
| 868 | ipa_client_link_destroy(rsl_link); |
| 869 | return -EIO; |
| 870 | } |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 871 | ret = 0; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 872 | break; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 873 | } |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 874 | default: |
| 875 | break; |
| 876 | } |
| 877 | return ret; |
| 878 | } |
| 879 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 880 | void e1inp_ipaccess_init(void) |
| 881 | { |
Pablo Neira Ayuso | 54b4979 | 2011-06-07 12:15:26 +0200 | [diff] [blame] | 882 | tall_ipa_ctx = talloc_named_const(libosmo_abis_ctx, 1, "ipa"); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 883 | e1inp_driver_register(&ipaccess_driver); |
| 884 | } |