Matthew Fredrickson | ab27bdd | 2010-02-16 22:07:04 +0100 | [diff] [blame] | 1 | /* OpenBSC Abis input driver for DAHDI */ |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 2 | |
| 3 | /* (C) 2008-2009 by Harald Welte <laforge@gnumonks.org> |
| 4 | * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org> |
Matthew Fredrickson | ab27bdd | 2010-02-16 22:07:04 +0100 | [diff] [blame] | 5 | * (C) 2010 by Digium and Matthew Fredrickson <creslin@digium.com> |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 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 General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 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 General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 21 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | #include <stdio.h> |
| 26 | #include <unistd.h> |
| 27 | #include <stdlib.h> |
| 28 | #include <errno.h> |
| 29 | #include <string.h> |
| 30 | #include <time.h> |
| 31 | #include <sys/fcntl.h> |
| 32 | #include <sys/types.h> |
| 33 | #include <sys/socket.h> |
| 34 | #include <sys/ioctl.h> |
| 35 | #include <arpa/inet.h> |
| 36 | #include <mISDNif.h> |
| 37 | |
| 38 | //#define AF_COMPATIBILITY_FUNC |
| 39 | //#include <compat_af_isdn.h> |
| 40 | #ifndef AF_ISDN |
| 41 | #define AF_ISDN 34 |
| 42 | #define PF_ISDN AF_ISDN |
| 43 | #endif |
| 44 | |
| 45 | #include <openbsc/select.h> |
| 46 | #include <openbsc/msgb.h> |
| 47 | #include <openbsc/debug.h> |
| 48 | #include <openbsc/gsm_data.h> |
| 49 | #include <openbsc/abis_nm.h> |
| 50 | #include <openbsc/abis_rsl.h> |
| 51 | #include <openbsc/subchan_demux.h> |
| 52 | #include <openbsc/e1_input.h> |
| 53 | #include <openbsc/talloc.h> |
| 54 | |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 55 | #include "lapd.h" |
| 56 | |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 57 | #define TS1_ALLOC_SIZE 300 |
| 58 | |
| 59 | struct prim_name { |
| 60 | unsigned int prim; |
| 61 | const char *name; |
| 62 | }; |
| 63 | |
| 64 | const struct prim_name prim_names[] = { |
| 65 | { PH_CONTROL_IND, "PH_CONTROL_IND" }, |
| 66 | { PH_DATA_IND, "PH_DATA_IND" }, |
| 67 | { PH_DATA_CNF, "PH_DATA_CNF" }, |
| 68 | { PH_ACTIVATE_IND, "PH_ACTIVATE_IND" }, |
| 69 | { DL_ESTABLISH_IND, "DL_ESTABLISH_IND" }, |
| 70 | { DL_ESTABLISH_CNF, "DL_ESTABLISH_CNF" }, |
| 71 | { DL_RELEASE_IND, "DL_RELEASE_IND" }, |
| 72 | { DL_RELEASE_CNF, "DL_RELEASE_CNF" }, |
| 73 | { DL_DATA_IND, "DL_DATA_IND" }, |
| 74 | { DL_UNITDATA_IND, "DL_UNITDATA_IND" }, |
| 75 | { DL_INFORMATION_IND, "DL_INFORMATION_IND" }, |
| 76 | { MPH_ACTIVATE_IND, "MPH_ACTIVATE_IND" }, |
| 77 | { MPH_DEACTIVATE_IND, "MPH_DEACTIVATE_IND" }, |
| 78 | }; |
| 79 | |
| 80 | const char *get_prim_name(unsigned int prim) |
| 81 | { |
| 82 | int i; |
| 83 | |
| 84 | for (i = 0; i < ARRAY_SIZE(prim_names); i++) { |
| 85 | if (prim_names[i].prim == prim) |
| 86 | return prim_names[i].name; |
| 87 | } |
| 88 | |
| 89 | return "UNKNOWN"; |
| 90 | } |
| 91 | |
| 92 | static int handle_ts1_read(struct bsc_fd *bfd) |
| 93 | { |
| 94 | struct e1inp_line *line = bfd->data; |
| 95 | unsigned int ts_nr = bfd->priv_nr; |
| 96 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 97 | struct e1inp_sign_link *link; |
Matthew Fredrickson | 124c80e | 2010-02-16 22:01:36 +0100 | [diff] [blame] | 98 | struct msgb *msg = msgb_alloc(TS1_ALLOC_SIZE, "DAHDI TS1"); |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 99 | struct sockaddr_mISDN l2addr; |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 100 | struct mISDNhead ah; |
| 101 | struct mISDNhead *hh = &ah; |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 102 | int ret; |
| 103 | |
| 104 | if (!msg) |
| 105 | return -ENOMEM; |
| 106 | |
| 107 | hh = (struct mISDNhead *) msg->data; |
| 108 | |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 109 | ret = read(bfd->fd, &msg->data, TS1_ALLOC_SIZE - 16); |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 110 | if (ret < 0) { |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 111 | perror("read "); |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 112 | } |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 113 | msgb_put(msg, ret); |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 114 | if (ret <= 3) { |
| 115 | perror("read "); |
| 116 | } |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 117 | |
| 118 | DEBUGP(DMI, "<= len = %d, prim(0x%x) id(0x%x): %s\n", |
| 119 | ret, hh->prim, hh->id, get_prim_name(hh->prim)); |
| 120 | |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 121 | int ilen; |
| 122 | lapd_mph_type prim; |
| 123 | uint8_t *idata = lapd_receive(msg->data, msg->len, &ilen, &prim, bfd); |
| 124 | |
| 125 | switch (prim) { |
| 126 | case 0: break; |
| 127 | case LAPD_MPH_ACTIVATE_IND: hh->prim = MPH_ACTIVATE_IND; break; |
| 128 | case LAPD_MPH_DEACTIVATE_IND: hh->prim = MPH_DEACTIVATE_IND; break; |
| 129 | case LAPD_DL_DATA_IND: hh->prim = DL_DATA_IND; break; |
| 130 | default: printf("ERROR: unknown prim\n"); |
| 131 | }; |
| 132 | |
| 133 | int pass_on = (prim != 0); |
| 134 | |
| 135 | if (!pass_on) { |
| 136 | return 0; |
| 137 | }; |
| 138 | |
| 139 | l2addr.sapi = msg->data[0] >> 2; |
| 140 | l2addr.tei = msg->data[1] >> 1; |
| 141 | msgb_pull(msg, 2); |
| 142 | |
| 143 | #if 0 |
| 144 | switch (hh->prim) { |
| 145 | case DL_INFORMATION_IND: |
| 146 | DEBUGP(DMI, "got DL_INFORMATION_IND\n"); |
| 147 | struct sockaddr_mISDN *sa = NULL; |
| 148 | char *lstr = "UNKN"; |
| 149 | |
| 150 | switch (l2addr.tei) { |
| 151 | case TEI_OML: |
| 152 | sa = &e1h->omladdr; |
| 153 | lstr = "OML"; |
| 154 | break; |
| 155 | case TEI_RSL: |
| 156 | sa = &e1h->l2addr; |
| 157 | lstr = "RSL"; |
| 158 | break; |
| 159 | default: |
| 160 | break; |
| 161 | } |
| 162 | if (sa) { |
| 163 | DEBUGP(DMI, "%s use channel(%d) sapi(%d) tei(%d) for now\n", |
| 164 | lstr, l2addr.channel, l2addr.sapi, l2addr.tei); |
| 165 | memcpy(sa, &l2addr, sizeof(l2addr)); |
| 166 | } |
| 167 | break; |
| 168 | case DL_ESTABLISH_IND: |
| 169 | DEBUGP(DMI, "got DL_ESTABLISH_IND\n"); |
| 170 | break; |
| 171 | case DL_ESTABLISH_CNF: |
| 172 | DEBUGP(DMI, "got DL_ESTABLISH_CNF\n"); |
| 173 | break; |
| 174 | case DL_RELEASE_IND: |
| 175 | DEBUGP(DMI, "got DL_RELEASE_IND: E1 Layer 1 disappeared?\n"); |
| 176 | break; |
| 177 | #if 0 |
| 178 | case MPH_ACTIVATE_IND: |
| 179 | DEBUGP(DMI, "got MPH_ACTIVATE_IND\n"); |
| 180 | printf("tei %d, sapi %d\n", l2addr.tei, l2addr.sapi); |
| 181 | if (l2addr.tei == TEI_OML && l2addr.sapi == SAPI_OML) |
| 182 | e1h->cb(EVT_E1_OML_UP, e1h->bts); |
| 183 | else if (l2addr.tei == TEI_RSL && l2addr.sapi == SAPI_RSL) |
| 184 | e1h->cb(EVT_E1_RSL_UP, e1h->bts); |
| 185 | break; |
| 186 | case MPH_DEACTIVATE_IND: |
| 187 | DEBUGP(DMI, "got MPH_DEACTIVATE_IND: TEI link closed?\n"); |
| 188 | if (l2addr.tei == TEI_OML && l2addr.sapi == SAPI_OML) |
| 189 | e1h->cb(EVT_E1_OML_DN, e1h->bts); |
| 190 | else if (l2addr.tei == TEI_RSL && l2addr.sapi == SAPI_RSL) |
| 191 | e1h->cb(EVT_E1_RSL_DN, e1h->bts); |
| 192 | break; |
| 193 | #endif |
| 194 | case DL_DATA_IND: |
| 195 | DEBUGP(DMI, "got DL_DATA_IND\n"); |
| 196 | |
| 197 | ret = msg->len; |
| 198 | msg->l2h = msg->data + 2;// + MISDN_HEADER_LEN; |
| 199 | |
| 200 | #if 0 |
| 201 | if (debug_mask & DMI) { |
| 202 | fprintf(stdout, "RX: "); |
| 203 | hexdump(msgb_l2(msg), ret - (msg->l2h - msg->data));// - MISDN_HEADER_LEN); |
| 204 | } |
| 205 | #endif |
| 206 | switch (l2addr.tei) { |
| 207 | case TEI_OML: |
| 208 | ret = abis_nm_rcvmsg(msg); |
| 209 | break; |
| 210 | case TEI_RSL: |
| 211 | ret = abis_rsl_rcvmsg(msg); |
| 212 | break; |
| 213 | default: |
| 214 | fprintf(stderr, "DATA_IND for unknown TEI\n"); |
| 215 | break; |
| 216 | } |
| 217 | break; |
| 218 | default: |
| 219 | DEBUGP(DMI, "got unexpected 0x%x prim\n", hh->prim); |
| 220 | break; |
| 221 | } |
| 222 | #endif |
| 223 | |
| 224 | |
| 225 | |
| 226 | #if 1 |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 227 | switch (hh->prim) { |
| 228 | case DL_INFORMATION_IND: |
| 229 | /* mISDN tells us which channel number is allocated for this |
| 230 | * tuple of (SAPI, TEI). */ |
| 231 | DEBUGP(DMI, "DL_INFORMATION_IND: use channel(%d) sapi(%d) tei(%d) for now\n", |
| 232 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 233 | link = e1inp_lookup_sign_link(e1i_ts, l2addr.tei, l2addr.sapi); |
| 234 | if (!link) { |
| 235 | DEBUGPC(DMI, "mISDN message for unknown sign_link\n"); |
| 236 | msgb_free(msg); |
| 237 | return -EINVAL; |
| 238 | } |
| 239 | /* save the channel number in the driver private struct */ |
| 240 | link->driver.misdn.channel = l2addr.channel; |
| 241 | break; |
| 242 | case DL_ESTABLISH_IND: |
| 243 | DEBUGP(DMI, "DL_ESTABLISH_IND: channel(%d) sapi(%d) tei(%d)\n", |
| 244 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 245 | ret = e1inp_event(e1i_ts, EVT_E1_TEI_UP, l2addr.tei, l2addr.sapi); |
| 246 | break; |
| 247 | case DL_RELEASE_IND: |
| 248 | DEBUGP(DMI, "DL_RELEASE_IND: channel(%d) sapi(%d) tei(%d)\n", |
| 249 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 250 | ret = e1inp_event(e1i_ts, EVT_E1_TEI_DN, l2addr.tei, l2addr.sapi); |
| 251 | break; |
| 252 | case DL_DATA_IND: |
| 253 | case DL_UNITDATA_IND: |
| 254 | msg->l2h = msg->data + MISDN_HEADER_LEN; |
| 255 | DEBUGP(DMI, "RX: %s\n", hexdump(msgb_l2(msg), ret - MISDN_HEADER_LEN)); |
| 256 | ret = e1inp_rx_ts(e1i_ts, msg, l2addr.tei, l2addr.sapi); |
| 257 | break; |
| 258 | case PH_ACTIVATE_IND: |
| 259 | DEBUGP(DMI, "PH_ACTIVATE_IND: channel(%d) sapi(%d) tei(%d)\n", |
| 260 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 261 | break; |
| 262 | case PH_DEACTIVATE_IND: |
| 263 | DEBUGP(DMI, "PH_DEACTIVATE_IND: channel(%d) sapi(%d) tei(%d)\n", |
| 264 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 265 | break; |
| 266 | default: |
| 267 | break; |
| 268 | } |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 269 | #endif |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 270 | return ret; |
| 271 | } |
| 272 | |
| 273 | static int ts_want_write(struct e1inp_ts *e1i_ts) |
| 274 | { |
| 275 | /* We never include the mISDN B-Channel FD into the |
| 276 | * writeset, since it doesn't support poll() based |
| 277 | * write flow control */ |
| 278 | if (e1i_ts->type == E1INP_TS_TYPE_TRAU) |
| 279 | return 0; |
| 280 | |
| 281 | e1i_ts->driver.misdn.fd.when |= BSC_FD_WRITE; |
| 282 | |
| 283 | return 0; |
| 284 | } |
| 285 | |
| 286 | static void timeout_ts1_write(void *data) |
| 287 | { |
| 288 | struct e1inp_ts *e1i_ts = (struct e1inp_ts *)data; |
| 289 | |
| 290 | /* trigger write of ts1, due to tx delay timer */ |
| 291 | ts_want_write(e1i_ts); |
| 292 | } |
| 293 | |
| 294 | static int handle_ts1_write(struct bsc_fd *bfd) |
| 295 | { |
| 296 | struct e1inp_line *line = bfd->data; |
| 297 | unsigned int ts_nr = bfd->priv_nr; |
| 298 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 299 | struct e1inp_sign_link *sign_link; |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 300 | struct msgb *msg; |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 301 | //u_int8_t *l2_data; |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 302 | int ret; |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 303 | //int no_oml = 0; |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 304 | |
| 305 | bfd->when &= ~BSC_FD_WRITE; |
| 306 | |
| 307 | /* get the next msg for this timeslot */ |
| 308 | msg = e1inp_tx_ts(e1i_ts, &sign_link); |
| 309 | if (!msg) { |
| 310 | /* no message after tx delay timer */ |
| 311 | return 0; |
| 312 | } |
| 313 | |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 314 | #if 0 |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 315 | DEBUGP(DMI, "TX TEI(%d) SAPI(%d): %s\n", sign_link->tei, |
| 316 | sign_link->sapi, hexdump(l2_data, msg->len - MISDN_HEADER_LEN)); |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 317 | #endif |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 318 | |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 319 | lapd_transmit(sign_link->tei, msg->data, msg->len, bfd); |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 320 | |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 321 | ret = write(bfd->fd, msg->data, msg->len + 2); |
| 322 | |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 323 | if (ret < 0) |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 324 | fprintf(stderr, "%s write failed %d\n", __func__, ret); |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 325 | msgb_free(msg); |
| 326 | |
| 327 | /* set tx delay timer for next event */ |
| 328 | e1i_ts->sign.tx_timer.cb = timeout_ts1_write; |
| 329 | e1i_ts->sign.tx_timer.data = e1i_ts; |
| 330 | bsc_schedule_timer(&e1i_ts->sign.tx_timer, 0, 50000); |
| 331 | |
| 332 | return ret; |
| 333 | } |
| 334 | |
| 335 | #define BCHAN_TX_GRAN 160 |
| 336 | /* write to a B channel TS */ |
| 337 | static int handle_tsX_write(struct bsc_fd *bfd) |
| 338 | { |
| 339 | struct e1inp_line *line = bfd->data; |
| 340 | unsigned int ts_nr = bfd->priv_nr; |
| 341 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 342 | struct mISDNhead *hh; |
| 343 | u_int8_t tx_buf[BCHAN_TX_GRAN + sizeof(*hh)]; |
| 344 | struct subch_mux *mx = &e1i_ts->trau.mux; |
| 345 | int ret; |
| 346 | |
| 347 | hh = (struct mISDNhead *) tx_buf; |
| 348 | hh->prim = PH_DATA_REQ; |
| 349 | |
| 350 | subchan_mux_out(mx, tx_buf+sizeof(*hh), BCHAN_TX_GRAN); |
| 351 | |
| 352 | DEBUGP(DMIB, "BCHAN TX: %s\n", |
| 353 | hexdump(tx_buf+sizeof(*hh), BCHAN_TX_GRAN)); |
| 354 | |
| 355 | ret = send(bfd->fd, tx_buf, sizeof(*hh) + BCHAN_TX_GRAN, 0); |
| 356 | if (ret < sizeof(*hh) + BCHAN_TX_GRAN) |
| 357 | DEBUGP(DMIB, "send returns %d instead of %lu\n", ret, |
| 358 | sizeof(*hh) + BCHAN_TX_GRAN); |
| 359 | |
| 360 | return ret; |
| 361 | } |
| 362 | |
| 363 | #define TSX_ALLOC_SIZE 4096 |
| 364 | /* FIXME: read from a B channel TS */ |
| 365 | static int handle_tsX_read(struct bsc_fd *bfd) |
| 366 | { |
| 367 | struct e1inp_line *line = bfd->data; |
| 368 | unsigned int ts_nr = bfd->priv_nr; |
| 369 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 370 | struct msgb *msg = msgb_alloc(TSX_ALLOC_SIZE, "DAHDI TSx"); |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 371 | struct mISDNhead ah; |
| 372 | struct mISDNhead *hh = &ah; |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 373 | int ret; |
| 374 | |
| 375 | if (!msg) |
| 376 | return -ENOMEM; |
| 377 | |
| 378 | hh = (struct mISDNhead *) msg->data; |
| 379 | |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 380 | ret = read(bfd->fd, msg->data, TSX_ALLOC_SIZE); |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 381 | if (ret < 0) { |
| 382 | fprintf(stderr, "read error %s\n", strerror(errno)); |
| 383 | return ret; |
| 384 | } |
| 385 | |
| 386 | msgb_put(msg, ret - 2); |
| 387 | |
| 388 | if (hh->prim != PH_CONTROL_IND) |
| 389 | DEBUGP(DMIB, "<= BCHAN len = %d, prim(0x%x) id(0x%x): %s\n", |
| 390 | ret, hh->prim, hh->id, get_prim_name(hh->prim)); |
| 391 | |
| 392 | switch (hh->prim) { |
| 393 | case PH_DATA_IND: |
| 394 | msg->l2h = msg->data + MISDN_HEADER_LEN; |
| 395 | DEBUGP(DMIB, "BCHAN RX: %s\n", |
| 396 | hexdump(msgb_l2(msg), ret - MISDN_HEADER_LEN)); |
| 397 | ret = e1inp_rx_ts(e1i_ts, msg, 0, 0); |
| 398 | break; |
| 399 | case PH_ACTIVATE_IND: |
| 400 | case PH_DATA_CNF: |
| 401 | /* physical layer indicates that data has been sent, |
| 402 | * we thus can send some more data */ |
| 403 | ret = handle_tsX_write(bfd); |
| 404 | default: |
| 405 | break; |
| 406 | } |
| 407 | /* FIXME: why do we free signalling msgs in the caller, and trau not? */ |
| 408 | msgb_free(msg); |
| 409 | |
| 410 | return ret; |
| 411 | } |
| 412 | |
| 413 | /* callback from select.c in case one of the fd's can be read/written */ |
| 414 | static int dahdi_fd_cb(struct bsc_fd *bfd, unsigned int what) |
| 415 | { |
| 416 | struct e1inp_line *line = bfd->data; |
| 417 | unsigned int ts_nr = bfd->priv_nr; |
| 418 | unsigned int idx = ts_nr-1; |
| 419 | struct e1inp_ts *e1i_ts = &line->ts[idx]; |
| 420 | int rc = 0; |
| 421 | |
| 422 | switch (e1i_ts->type) { |
| 423 | case E1INP_TS_TYPE_SIGN: |
| 424 | if (what & BSC_FD_READ) |
| 425 | rc = handle_ts1_read(bfd); |
| 426 | if (what & BSC_FD_WRITE) |
| 427 | rc = handle_ts1_write(bfd); |
| 428 | break; |
| 429 | case E1INP_TS_TYPE_TRAU: |
| 430 | if (what & BSC_FD_READ) |
| 431 | rc = handle_tsX_read(bfd); |
| 432 | /* We never include the mISDN B-Channel FD into the |
| 433 | * writeset, since it doesn't support poll() based |
| 434 | * write flow control */ |
| 435 | break; |
| 436 | default: |
| 437 | fprintf(stderr, "unknown E1 TS type %u\n", e1i_ts->type); |
| 438 | break; |
| 439 | } |
| 440 | |
| 441 | return rc; |
| 442 | } |
| 443 | |
| 444 | #if 0 |
| 445 | static int activate_bchan(struct e1inp_line *line, int ts, int act) |
| 446 | { |
| 447 | struct mISDNhead hh; |
| 448 | int ret; |
| 449 | unsigned int idx = ts-1; |
| 450 | struct e1inp_ts *e1i_ts = &line->ts[idx]; |
| 451 | struct bsc_fd *bfd = &e1i_ts->driver.misdn.fd; |
| 452 | |
| 453 | fprintf(stdout, "activate bchan\n"); |
| 454 | if (act) |
| 455 | hh.prim = PH_ACTIVATE_REQ; |
| 456 | else |
| 457 | hh.prim = PH_DEACTIVATE_REQ; |
| 458 | |
| 459 | hh.id = MISDN_ID_ANY; |
| 460 | ret = sendto(bfd->fd, &hh, sizeof(hh), 0, NULL, 0); |
| 461 | if (ret < 0) { |
| 462 | fprintf(stdout, "could not send ACTIVATE_RQ %s\n", |
| 463 | strerror(errno)); |
| 464 | } |
| 465 | |
| 466 | return ret; |
| 467 | } |
| 468 | #endif |
| 469 | |
| 470 | struct e1inp_driver dahdi_driver = { |
| 471 | .name = "DAHDI", |
| 472 | .want_write = ts_want_write, |
| 473 | }; |
| 474 | |
| 475 | static int mi_e1_setup(struct e1inp_line *line, int release_l2) |
| 476 | { |
| 477 | int ts, ret; |
| 478 | |
| 479 | /* TS0 is CRC4, don't need any fd for it */ |
| 480 | for (ts = 1; ts < NUM_E1_TS; ts++) { |
| 481 | unsigned int idx = ts-1; |
| 482 | char openstr[128]; |
| 483 | struct e1inp_ts *e1i_ts = &line->ts[idx]; |
| 484 | struct bsc_fd *bfd = &e1i_ts->driver.misdn.fd; |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 485 | |
| 486 | bfd->data = line; |
| 487 | bfd->priv_nr = ts; |
| 488 | bfd->cb = dahdi_fd_cb; |
| 489 | snprintf(openstr, sizeof(openstr), "/dev/dahdi/%d", ts); |
| 490 | |
| 491 | switch (e1i_ts->type) { |
| 492 | case E1INP_TS_TYPE_NONE: |
| 493 | continue; |
| 494 | break; |
| 495 | case E1INP_TS_TYPE_SIGN: |
| 496 | bfd->fd = open(openstr, O_RDWR); |
| 497 | bfd->when = BSC_FD_READ; |
| 498 | break; |
| 499 | case E1INP_TS_TYPE_TRAU: |
| 500 | bfd->fd = open(openstr, O_RDWR); |
| 501 | /* We never include the mISDN B-Channel FD into the |
| 502 | * writeset, since it doesn't support poll() based |
| 503 | * write flow control */ |
| 504 | bfd->when = BSC_FD_READ; |
| 505 | break; |
| 506 | } |
| 507 | |
| 508 | if (bfd->fd < 0) { |
| 509 | fprintf(stderr, "%s could not open %s %s\n", |
| 510 | __func__, openstr, strerror(errno)); |
| 511 | return bfd->fd; |
| 512 | } |
| 513 | |
| 514 | ret = bsc_register_fd(bfd); |
| 515 | if (ret < 0) { |
| 516 | fprintf(stderr, "could not register FD: %s\n", |
| 517 | strerror(ret)); |
| 518 | return ret; |
| 519 | } |
| 520 | } |
| 521 | |
| 522 | return 0; |
| 523 | } |
| 524 | |
| 525 | int mi_e1_line_update(struct e1inp_line *line) |
| 526 | { |
| 527 | struct mISDN_devinfo devinfo; |
Matthew Fredrickson | 73448bf | 2010-02-17 19:25:39 +0100 | [diff] [blame^] | 528 | //int sk, ret, cnt; |
| 529 | int ret; |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 530 | |
| 531 | if (!line->driver) { |
| 532 | /* this must be the first update */ |
Matthew Fredrickson | 124c80e | 2010-02-16 22:01:36 +0100 | [diff] [blame] | 533 | line->driver = &dahdi_driver; |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 534 | } else { |
| 535 | /* this is a subsequent update */ |
| 536 | /* FIXME: first close all sockets */ |
| 537 | fprintf(stderr, "incremental line updates not supported yet\n"); |
| 538 | return 0; |
| 539 | } |
| 540 | |
Matthew Fredrickson | 124c80e | 2010-02-16 22:01:36 +0100 | [diff] [blame] | 541 | if (line->driver != &dahdi_driver) |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 542 | return -EINVAL; |
| 543 | |
Matthew Fredrickson | 124c80e | 2010-02-16 22:01:36 +0100 | [diff] [blame] | 544 | #if 0 |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 545 | /* open the ISDN card device */ |
| 546 | sk = socket(PF_ISDN, SOCK_RAW, ISDN_P_BASE); |
| 547 | if (sk < 0) { |
| 548 | fprintf(stderr, "%s could not open socket %s\n", |
| 549 | __func__, strerror(errno)); |
| 550 | return sk; |
| 551 | } |
| 552 | |
| 553 | ret = ioctl(sk, IMGETCOUNT, &cnt); |
| 554 | if (ret) { |
| 555 | fprintf(stderr, "%s error getting interf count: %s\n", |
| 556 | __func__, strerror(errno)); |
| 557 | close(sk); |
| 558 | return -ENODEV; |
| 559 | } |
| 560 | //DEBUGP(DMI,"%d device%s found\n", cnt, (cnt==1)?"":"s"); |
| 561 | printf("%d device%s found\n", cnt, (cnt==1)?"":"s"); |
| 562 | #if 1 |
| 563 | devinfo.id = line->num; |
| 564 | ret = ioctl(sk, IMGETDEVINFO, &devinfo); |
| 565 | if (ret < 0) { |
| 566 | fprintf(stdout, "error getting info for device %d: %s\n", |
| 567 | line->num, strerror(errno)); |
| 568 | return -ENODEV; |
| 569 | } |
| 570 | fprintf(stdout, " id: %d\n", devinfo.id); |
| 571 | fprintf(stdout, " Dprotocols: %08x\n", devinfo.Dprotocols); |
| 572 | fprintf(stdout, " Bprotocols: %08x\n", devinfo.Bprotocols); |
| 573 | fprintf(stdout, " protocol: %d\n", devinfo.protocol); |
| 574 | fprintf(stdout, " nrbchan: %d\n", devinfo.nrbchan); |
| 575 | fprintf(stdout, " name: %s\n", devinfo.name); |
| 576 | #endif |
| 577 | |
| 578 | if (!(devinfo.Dprotocols & (1 << ISDN_P_NT_E1))) { |
| 579 | fprintf(stderr, "error: card is not of type E1 (NT-mode)\n"); |
| 580 | return -EINVAL; |
| 581 | } |
Matthew Fredrickson | 124c80e | 2010-02-16 22:01:36 +0100 | [diff] [blame] | 582 | #endif |
Matthew Fredrickson | 7a9f985 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 583 | |
| 584 | ret = mi_e1_setup(line, 1); |
| 585 | if (ret) |
| 586 | return ret; |
| 587 | |
| 588 | return 0; |
| 589 | } |
| 590 | |
| 591 | static __attribute__((constructor)) void on_dso_load_sms(void) |
| 592 | { |
| 593 | /* register the driver with the core */ |
| 594 | e1inp_driver_register(&dahdi_driver); |
| 595 | } |