Matthew Fredrickson | d105e20 | 2010-02-16 22:07:04 +0100 | [diff] [blame] | 1 | /* OpenBSC Abis input driver for DAHDI */ |
Matthew Fredrickson | b5ddc18 | 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 | d105e20 | 2010-02-16 22:07:04 +0100 | [diff] [blame] | 5 | * (C) 2010 by Digium and Matthew Fredrickson <creslin@digium.com> |
Matthew Fredrickson | b5ddc18 | 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> |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 37 | #include <dahdi/user.h> |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 38 | |
| 39 | //#define AF_COMPATIBILITY_FUNC |
| 40 | //#include <compat_af_isdn.h> |
| 41 | #ifndef AF_ISDN |
| 42 | #define AF_ISDN 34 |
| 43 | #define PF_ISDN AF_ISDN |
| 44 | #endif |
| 45 | |
| 46 | #include <openbsc/select.h> |
| 47 | #include <openbsc/msgb.h> |
| 48 | #include <openbsc/debug.h> |
| 49 | #include <openbsc/gsm_data.h> |
| 50 | #include <openbsc/abis_nm.h> |
| 51 | #include <openbsc/abis_rsl.h> |
| 52 | #include <openbsc/subchan_demux.h> |
| 53 | #include <openbsc/e1_input.h> |
| 54 | #include <openbsc/talloc.h> |
| 55 | |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 56 | #include "lapd.h" |
| 57 | |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 58 | #define TS1_ALLOC_SIZE 300 |
| 59 | |
| 60 | struct prim_name { |
| 61 | unsigned int prim; |
| 62 | const char *name; |
| 63 | }; |
| 64 | |
| 65 | const struct prim_name prim_names[] = { |
| 66 | { PH_CONTROL_IND, "PH_CONTROL_IND" }, |
| 67 | { PH_DATA_IND, "PH_DATA_IND" }, |
| 68 | { PH_DATA_CNF, "PH_DATA_CNF" }, |
| 69 | { PH_ACTIVATE_IND, "PH_ACTIVATE_IND" }, |
| 70 | { DL_ESTABLISH_IND, "DL_ESTABLISH_IND" }, |
| 71 | { DL_ESTABLISH_CNF, "DL_ESTABLISH_CNF" }, |
| 72 | { DL_RELEASE_IND, "DL_RELEASE_IND" }, |
| 73 | { DL_RELEASE_CNF, "DL_RELEASE_CNF" }, |
| 74 | { DL_DATA_IND, "DL_DATA_IND" }, |
| 75 | { DL_UNITDATA_IND, "DL_UNITDATA_IND" }, |
| 76 | { DL_INFORMATION_IND, "DL_INFORMATION_IND" }, |
| 77 | { MPH_ACTIVATE_IND, "MPH_ACTIVATE_IND" }, |
| 78 | { MPH_DEACTIVATE_IND, "MPH_DEACTIVATE_IND" }, |
| 79 | }; |
| 80 | |
| 81 | const char *get_prim_name(unsigned int prim) |
| 82 | { |
| 83 | int i; |
| 84 | |
| 85 | for (i = 0; i < ARRAY_SIZE(prim_names); i++) { |
| 86 | if (prim_names[i].prim == prim) |
| 87 | return prim_names[i].name; |
| 88 | } |
| 89 | |
| 90 | return "UNKNOWN"; |
| 91 | } |
| 92 | |
| 93 | static int handle_ts1_read(struct bsc_fd *bfd) |
| 94 | { |
| 95 | struct e1inp_line *line = bfd->data; |
| 96 | unsigned int ts_nr = bfd->priv_nr; |
| 97 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 98 | struct e1inp_sign_link *link; |
Matthew Fredrickson | bc6649e | 2010-02-16 22:01:36 +0100 | [diff] [blame] | 99 | struct msgb *msg = msgb_alloc(TS1_ALLOC_SIZE, "DAHDI TS1"); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 100 | struct sockaddr_mISDN l2addr; |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 101 | struct mISDNhead ah; |
| 102 | struct mISDNhead *hh = &ah; |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 103 | int ret; |
| 104 | |
| 105 | if (!msg) |
| 106 | return -ENOMEM; |
| 107 | |
| 108 | hh = (struct mISDNhead *) msg->data; |
| 109 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 110 | ret = read(bfd->fd, msg->data, TS1_ALLOC_SIZE - 16); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 111 | if (ret < 0) { |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 112 | perror("read "); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 113 | } |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 114 | msgb_put(msg, ret - 2); |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 115 | if (ret <= 3) { |
| 116 | perror("read "); |
| 117 | } |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 118 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 119 | l2addr.sapi = msg->data[0] >> 2; |
| 120 | l2addr.tei = msg->data[1] >> 1; |
| 121 | |
| 122 | DEBUGP(DMI, "<= len = %d, sapi(%d) tei(%d)", |
| 123 | ret, l2addr.sapi, l2addr.tei); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 124 | |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 125 | int ilen; |
| 126 | lapd_mph_type prim; |
| 127 | uint8_t *idata = lapd_receive(msg->data, msg->len, &ilen, &prim, bfd); |
| 128 | |
| 129 | switch (prim) { |
| 130 | case 0: break; |
| 131 | case LAPD_MPH_ACTIVATE_IND: hh->prim = MPH_ACTIVATE_IND; break; |
| 132 | case LAPD_MPH_DEACTIVATE_IND: hh->prim = MPH_DEACTIVATE_IND; break; |
| 133 | case LAPD_DL_DATA_IND: hh->prim = DL_DATA_IND; break; |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 134 | case LAPD_DL_UNITDATA_IND: hh->prim = DL_UNITDATA_IND; break; |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 135 | default: printf("ERROR: unknown prim\n"); |
| 136 | }; |
| 137 | |
| 138 | int pass_on = (prim != 0); |
| 139 | |
| 140 | if (!pass_on) { |
| 141 | return 0; |
| 142 | }; |
| 143 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 144 | //l2addr.sapi = msg->data[0] >> 2; |
| 145 | //l2addr.tei = msg->data[1] >> 1; |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 146 | msgb_pull(msg, 2); |
| 147 | |
| 148 | #if 0 |
| 149 | switch (hh->prim) { |
| 150 | case DL_INFORMATION_IND: |
| 151 | DEBUGP(DMI, "got DL_INFORMATION_IND\n"); |
| 152 | struct sockaddr_mISDN *sa = NULL; |
| 153 | char *lstr = "UNKN"; |
| 154 | |
| 155 | switch (l2addr.tei) { |
| 156 | case TEI_OML: |
| 157 | sa = &e1h->omladdr; |
| 158 | lstr = "OML"; |
| 159 | break; |
| 160 | case TEI_RSL: |
| 161 | sa = &e1h->l2addr; |
| 162 | lstr = "RSL"; |
| 163 | break; |
| 164 | default: |
| 165 | break; |
| 166 | } |
| 167 | if (sa) { |
| 168 | DEBUGP(DMI, "%s use channel(%d) sapi(%d) tei(%d) for now\n", |
| 169 | lstr, l2addr.channel, l2addr.sapi, l2addr.tei); |
| 170 | memcpy(sa, &l2addr, sizeof(l2addr)); |
| 171 | } |
| 172 | break; |
| 173 | case DL_ESTABLISH_IND: |
| 174 | DEBUGP(DMI, "got DL_ESTABLISH_IND\n"); |
| 175 | break; |
| 176 | case DL_ESTABLISH_CNF: |
| 177 | DEBUGP(DMI, "got DL_ESTABLISH_CNF\n"); |
| 178 | break; |
| 179 | case DL_RELEASE_IND: |
| 180 | DEBUGP(DMI, "got DL_RELEASE_IND: E1 Layer 1 disappeared?\n"); |
| 181 | break; |
| 182 | #if 0 |
| 183 | case MPH_ACTIVATE_IND: |
| 184 | DEBUGP(DMI, "got MPH_ACTIVATE_IND\n"); |
| 185 | printf("tei %d, sapi %d\n", l2addr.tei, l2addr.sapi); |
| 186 | if (l2addr.tei == TEI_OML && l2addr.sapi == SAPI_OML) |
| 187 | e1h->cb(EVT_E1_OML_UP, e1h->bts); |
| 188 | else if (l2addr.tei == TEI_RSL && l2addr.sapi == SAPI_RSL) |
| 189 | e1h->cb(EVT_E1_RSL_UP, e1h->bts); |
| 190 | break; |
| 191 | case MPH_DEACTIVATE_IND: |
| 192 | DEBUGP(DMI, "got MPH_DEACTIVATE_IND: TEI link closed?\n"); |
| 193 | if (l2addr.tei == TEI_OML && l2addr.sapi == SAPI_OML) |
| 194 | e1h->cb(EVT_E1_OML_DN, e1h->bts); |
| 195 | else if (l2addr.tei == TEI_RSL && l2addr.sapi == SAPI_RSL) |
| 196 | e1h->cb(EVT_E1_RSL_DN, e1h->bts); |
| 197 | break; |
| 198 | #endif |
| 199 | case DL_DATA_IND: |
| 200 | DEBUGP(DMI, "got DL_DATA_IND\n"); |
| 201 | |
| 202 | ret = msg->len; |
| 203 | msg->l2h = msg->data + 2;// + MISDN_HEADER_LEN; |
| 204 | |
| 205 | #if 0 |
| 206 | if (debug_mask & DMI) { |
| 207 | fprintf(stdout, "RX: "); |
| 208 | hexdump(msgb_l2(msg), ret - (msg->l2h - msg->data));// - MISDN_HEADER_LEN); |
| 209 | } |
| 210 | #endif |
| 211 | switch (l2addr.tei) { |
| 212 | case TEI_OML: |
| 213 | ret = abis_nm_rcvmsg(msg); |
| 214 | break; |
| 215 | case TEI_RSL: |
| 216 | ret = abis_rsl_rcvmsg(msg); |
| 217 | break; |
| 218 | default: |
| 219 | fprintf(stderr, "DATA_IND for unknown TEI\n"); |
| 220 | break; |
| 221 | } |
| 222 | break; |
| 223 | default: |
| 224 | DEBUGP(DMI, "got unexpected 0x%x prim\n", hh->prim); |
| 225 | break; |
| 226 | } |
| 227 | #endif |
| 228 | |
| 229 | |
| 230 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 231 | DEBUGP(DMI, "hh->prim %08x\n", hh->prim); |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 232 | #if 1 |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 233 | switch (hh->prim) { |
| 234 | case DL_INFORMATION_IND: |
| 235 | /* mISDN tells us which channel number is allocated for this |
| 236 | * tuple of (SAPI, TEI). */ |
| 237 | DEBUGP(DMI, "DL_INFORMATION_IND: use channel(%d) sapi(%d) tei(%d) for now\n", |
| 238 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 239 | link = e1inp_lookup_sign_link(e1i_ts, l2addr.tei, l2addr.sapi); |
| 240 | if (!link) { |
| 241 | DEBUGPC(DMI, "mISDN message for unknown sign_link\n"); |
| 242 | msgb_free(msg); |
| 243 | return -EINVAL; |
| 244 | } |
| 245 | /* save the channel number in the driver private struct */ |
| 246 | link->driver.misdn.channel = l2addr.channel; |
| 247 | break; |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 248 | case MPH_ACTIVATE_IND: |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 249 | case DL_ESTABLISH_IND: |
| 250 | DEBUGP(DMI, "DL_ESTABLISH_IND: channel(%d) sapi(%d) tei(%d)\n", |
| 251 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 252 | ret = e1inp_event(e1i_ts, EVT_E1_TEI_UP, l2addr.tei, l2addr.sapi); |
| 253 | break; |
| 254 | case DL_RELEASE_IND: |
| 255 | DEBUGP(DMI, "DL_RELEASE_IND: channel(%d) sapi(%d) tei(%d)\n", |
| 256 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 257 | ret = e1inp_event(e1i_ts, EVT_E1_TEI_DN, l2addr.tei, l2addr.sapi); |
| 258 | break; |
| 259 | case DL_DATA_IND: |
| 260 | case DL_UNITDATA_IND: |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 261 | if (hh->prim == DL_DATA_IND) |
| 262 | msg->l2h = msg->data + 2; |
| 263 | else |
| 264 | msg->l2h = msg->data + 1; |
| 265 | DEBUGP(DMI, "RX: %s\n", hexdump(msgb_l2(msg), ret)); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 266 | ret = e1inp_rx_ts(e1i_ts, msg, l2addr.tei, l2addr.sapi); |
| 267 | break; |
| 268 | case PH_ACTIVATE_IND: |
| 269 | DEBUGP(DMI, "PH_ACTIVATE_IND: channel(%d) sapi(%d) tei(%d)\n", |
| 270 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 271 | break; |
| 272 | case PH_DEACTIVATE_IND: |
| 273 | DEBUGP(DMI, "PH_DEACTIVATE_IND: channel(%d) sapi(%d) tei(%d)\n", |
| 274 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 275 | break; |
| 276 | default: |
| 277 | break; |
| 278 | } |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 279 | #endif |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 280 | DEBUGP(DMI, "Returned ok\n"); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 281 | return ret; |
| 282 | } |
| 283 | |
| 284 | static int ts_want_write(struct e1inp_ts *e1i_ts) |
| 285 | { |
| 286 | /* We never include the mISDN B-Channel FD into the |
| 287 | * writeset, since it doesn't support poll() based |
| 288 | * write flow control */ |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 289 | if (e1i_ts->type == E1INP_TS_TYPE_TRAU) { |
| 290 | fprintf(stderr, "Trying to write TRAU ts\n"); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 291 | return 0; |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 292 | } |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 293 | |
| 294 | e1i_ts->driver.misdn.fd.when |= BSC_FD_WRITE; |
| 295 | |
| 296 | return 0; |
| 297 | } |
| 298 | |
| 299 | static void timeout_ts1_write(void *data) |
| 300 | { |
| 301 | struct e1inp_ts *e1i_ts = (struct e1inp_ts *)data; |
| 302 | |
| 303 | /* trigger write of ts1, due to tx delay timer */ |
| 304 | ts_want_write(e1i_ts); |
| 305 | } |
| 306 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 307 | static void dahdi_write_msg(uint8_t *data, int len, void *cbdata) |
| 308 | { |
| 309 | struct bsc_fd *bfd = cbdata; |
| 310 | int ret; |
| 311 | |
| 312 | ret = write(bfd->fd, data, len + 2); |
| 313 | |
| 314 | if (ret < 0) |
| 315 | fprintf(stderr, "%s write failed %d\n", __func__, ret); |
| 316 | } |
| 317 | |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 318 | static int handle_ts1_write(struct bsc_fd *bfd) |
| 319 | { |
| 320 | struct e1inp_line *line = bfd->data; |
| 321 | unsigned int ts_nr = bfd->priv_nr; |
| 322 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 323 | struct e1inp_sign_link *sign_link; |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 324 | struct msgb *msg; |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 325 | //u_int8_t *l2_data; |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 326 | //int ret; |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 327 | //int no_oml = 0; |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 328 | |
| 329 | bfd->when &= ~BSC_FD_WRITE; |
| 330 | |
| 331 | /* get the next msg for this timeslot */ |
| 332 | msg = e1inp_tx_ts(e1i_ts, &sign_link); |
| 333 | if (!msg) { |
| 334 | /* no message after tx delay timer */ |
| 335 | return 0; |
| 336 | } |
| 337 | |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 338 | lapd_transmit(sign_link->tei, msg->data, msg->len, bfd); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 339 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 340 | //ret = write(bfd->fd, msg->data, msg->len + 2); |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 341 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 342 | #if 0 |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 343 | if (ret < 0) |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 344 | fprintf(stderr, "%s write failed %d\n", __func__, ret); |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 345 | #endif |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 346 | msgb_free(msg); |
| 347 | |
| 348 | /* set tx delay timer for next event */ |
| 349 | e1i_ts->sign.tx_timer.cb = timeout_ts1_write; |
| 350 | e1i_ts->sign.tx_timer.data = e1i_ts; |
| 351 | bsc_schedule_timer(&e1i_ts->sign.tx_timer, 0, 50000); |
| 352 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 353 | return 0; |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 354 | } |
| 355 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 356 | |
| 357 | static int invertbits = 1; |
| 358 | |
| 359 | static u_int8_t flip_table[256]; |
| 360 | |
| 361 | static void init_flip_bits(void) |
| 362 | { |
| 363 | int i,k; |
| 364 | |
| 365 | for (i = 0 ; i < 256 ; i++) { |
| 366 | u_int8_t sample = 0 ; |
| 367 | for (k = 0; k<8; k++) { |
| 368 | if ( i & 1 << k ) sample |= 0x80 >> k; |
| 369 | } |
| 370 | flip_table[i] = sample; |
| 371 | } |
| 372 | } |
| 373 | |
| 374 | static u_int8_t * flip_buf_bits ( u_int8_t * buf , int len) |
| 375 | { |
| 376 | int i; |
| 377 | char * start = buf; |
| 378 | |
| 379 | for (i = 0 ; i < len; i++) { |
| 380 | buf[i] = flip_table[(u_int8_t)buf[i]]; |
| 381 | } |
| 382 | |
| 383 | return start; |
| 384 | } |
| 385 | |
| 386 | #define D_BCHAN_TX_GRAN 1024 |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 387 | /* write to a B channel TS */ |
| 388 | static int handle_tsX_write(struct bsc_fd *bfd) |
| 389 | { |
| 390 | struct e1inp_line *line = bfd->data; |
| 391 | unsigned int ts_nr = bfd->priv_nr; |
| 392 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 393 | u_int8_t tx_buf[D_BCHAN_TX_GRAN]; |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 394 | struct subch_mux *mx = &e1i_ts->trau.mux; |
| 395 | int ret; |
| 396 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 397 | ret = subchan_mux_out(mx, tx_buf, D_BCHAN_TX_GRAN); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 398 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 399 | if (ret != D_BCHAN_TX_GRAN) { |
| 400 | fprintf(stderr, "Huh, got ret of %d\n", ret); |
| 401 | if (ret < 0) |
| 402 | return ret; |
| 403 | } |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 404 | |
| 405 | DEBUGP(DMIB, "BCHAN TX: %s\n", |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 406 | hexdump(tx_buf, D_BCHAN_TX_GRAN)); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 407 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 408 | if (invertbits) { |
| 409 | flip_buf_bits(tx_buf, ret); |
| 410 | } |
| 411 | |
| 412 | ret = write(bfd->fd, tx_buf, ret); |
| 413 | if (ret < D_BCHAN_TX_GRAN) |
| 414 | fprintf(stderr, "send returns %d instead of %lu\n", ret, |
| 415 | D_BCHAN_TX_GRAN); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 416 | |
| 417 | return ret; |
| 418 | } |
| 419 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 420 | #define D_TSX_ALLOC_SIZE 1024 |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 421 | /* FIXME: read from a B channel TS */ |
| 422 | static int handle_tsX_read(struct bsc_fd *bfd) |
| 423 | { |
| 424 | struct e1inp_line *line = bfd->data; |
| 425 | unsigned int ts_nr = bfd->priv_nr; |
| 426 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 427 | struct msgb *msg = msgb_alloc(D_TSX_ALLOC_SIZE, "DAHDI TSx"); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 428 | int ret; |
| 429 | |
| 430 | if (!msg) |
| 431 | return -ENOMEM; |
| 432 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 433 | ret = read(bfd->fd, msg->data, D_TSX_ALLOC_SIZE); |
| 434 | if (ret < 0 || ret != D_TSX_ALLOC_SIZE) { |
| 435 | fprintf(stderr, "read error %d %s\n", ret, strerror(errno)); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 436 | return ret; |
| 437 | } |
| 438 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 439 | if (invertbits) { |
| 440 | flip_buf_bits(msg->data, ret); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 441 | } |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 442 | |
| 443 | msgb_put(msg, ret); |
| 444 | |
| 445 | msg->l2h = msg->data; |
| 446 | DEBUGP(DMIB, "BCHAN RX: %s\n", |
| 447 | hexdump(msgb_l2(msg), ret)); |
| 448 | ret = e1inp_rx_ts(e1i_ts, msg, 0, 0); |
| 449 | /* physical layer indicates that data has been sent, |
| 450 | * we thus can send some more data */ |
| 451 | //ret = handle_tsX_write(bfd); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 452 | msgb_free(msg); |
| 453 | |
| 454 | return ret; |
| 455 | } |
| 456 | |
| 457 | /* callback from select.c in case one of the fd's can be read/written */ |
| 458 | static int dahdi_fd_cb(struct bsc_fd *bfd, unsigned int what) |
| 459 | { |
| 460 | struct e1inp_line *line = bfd->data; |
| 461 | unsigned int ts_nr = bfd->priv_nr; |
| 462 | unsigned int idx = ts_nr-1; |
| 463 | struct e1inp_ts *e1i_ts = &line->ts[idx]; |
| 464 | int rc = 0; |
| 465 | |
| 466 | switch (e1i_ts->type) { |
| 467 | case E1INP_TS_TYPE_SIGN: |
| 468 | if (what & BSC_FD_READ) |
| 469 | rc = handle_ts1_read(bfd); |
| 470 | if (what & BSC_FD_WRITE) |
| 471 | rc = handle_ts1_write(bfd); |
| 472 | break; |
| 473 | case E1INP_TS_TYPE_TRAU: |
| 474 | if (what & BSC_FD_READ) |
| 475 | rc = handle_tsX_read(bfd); |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 476 | if (what & BSC_FD_WRITE) |
| 477 | rc = handle_tsX_write(bfd); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 478 | /* We never include the mISDN B-Channel FD into the |
| 479 | * writeset, since it doesn't support poll() based |
| 480 | * write flow control */ |
| 481 | break; |
| 482 | default: |
| 483 | fprintf(stderr, "unknown E1 TS type %u\n", e1i_ts->type); |
| 484 | break; |
| 485 | } |
| 486 | |
| 487 | return rc; |
| 488 | } |
| 489 | |
| 490 | #if 0 |
| 491 | static int activate_bchan(struct e1inp_line *line, int ts, int act) |
| 492 | { |
| 493 | struct mISDNhead hh; |
| 494 | int ret; |
| 495 | unsigned int idx = ts-1; |
| 496 | struct e1inp_ts *e1i_ts = &line->ts[idx]; |
| 497 | struct bsc_fd *bfd = &e1i_ts->driver.misdn.fd; |
| 498 | |
| 499 | fprintf(stdout, "activate bchan\n"); |
| 500 | if (act) |
| 501 | hh.prim = PH_ACTIVATE_REQ; |
| 502 | else |
| 503 | hh.prim = PH_DEACTIVATE_REQ; |
| 504 | |
| 505 | hh.id = MISDN_ID_ANY; |
| 506 | ret = sendto(bfd->fd, &hh, sizeof(hh), 0, NULL, 0); |
| 507 | if (ret < 0) { |
| 508 | fprintf(stdout, "could not send ACTIVATE_RQ %s\n", |
| 509 | strerror(errno)); |
| 510 | } |
| 511 | |
| 512 | return ret; |
| 513 | } |
| 514 | #endif |
| 515 | |
| 516 | struct e1inp_driver dahdi_driver = { |
| 517 | .name = "DAHDI", |
| 518 | .want_write = ts_want_write, |
| 519 | }; |
| 520 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 521 | void dahdi_set_bufinfo(int fd, int as_sigchan) |
| 522 | { |
| 523 | struct dahdi_bufferinfo bi; |
| 524 | int x = 0; |
| 525 | |
| 526 | if (ioctl(fd, DAHDI_GET_BUFINFO, &bi)) { |
| 527 | fprintf(stderr, "Error getting bufinfo\n"); |
| 528 | exit(-1); |
| 529 | } |
| 530 | |
| 531 | if (as_sigchan) { |
| 532 | bi.numbufs = 4; |
| 533 | bi.bufsize = 512; |
| 534 | } else { |
| 535 | bi.numbufs = 4; |
| 536 | bi.bufsize = D_BCHAN_TX_GRAN; |
| 537 | //bi.txbufpolicy = DAHDI_POLICY_WHEN_FULL; |
| 538 | } |
| 539 | |
| 540 | if (ioctl(fd, DAHDI_SET_BUFINFO, &bi)) { |
| 541 | fprintf(stderr, "Error setting bufinfo\n"); |
| 542 | exit(-1); |
| 543 | } |
| 544 | |
| 545 | if (!as_sigchan) { |
| 546 | if (ioctl(fd, DAHDI_AUDIOMODE, &x)) { |
| 547 | fprintf(stderr, "Error setting bufinfo\n"); |
| 548 | exit(-1); |
| 549 | } |
| 550 | } |
| 551 | |
| 552 | } |
| 553 | |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 554 | static int mi_e1_setup(struct e1inp_line *line, int release_l2) |
| 555 | { |
| 556 | int ts, ret; |
| 557 | |
| 558 | /* TS0 is CRC4, don't need any fd for it */ |
| 559 | for (ts = 1; ts < NUM_E1_TS; ts++) { |
| 560 | unsigned int idx = ts-1; |
| 561 | char openstr[128]; |
| 562 | struct e1inp_ts *e1i_ts = &line->ts[idx]; |
| 563 | struct bsc_fd *bfd = &e1i_ts->driver.misdn.fd; |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 564 | |
| 565 | bfd->data = line; |
| 566 | bfd->priv_nr = ts; |
| 567 | bfd->cb = dahdi_fd_cb; |
| 568 | snprintf(openstr, sizeof(openstr), "/dev/dahdi/%d", ts); |
| 569 | |
| 570 | switch (e1i_ts->type) { |
| 571 | case E1INP_TS_TYPE_NONE: |
| 572 | continue; |
| 573 | break; |
| 574 | case E1INP_TS_TYPE_SIGN: |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 575 | bfd->fd = open(openstr, O_RDWR | O_NONBLOCK); |
| 576 | if (bfd->fd == -1) { |
| 577 | fprintf(stderr, "%s could not open %s %s\n", |
| 578 | __func__, openstr, strerror(errno)); |
| 579 | exit(-1); |
| 580 | } |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 581 | bfd->when = BSC_FD_READ; |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 582 | dahdi_set_bufinfo(bfd->fd, 1); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 583 | break; |
| 584 | case E1INP_TS_TYPE_TRAU: |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 585 | bfd->fd = open(openstr, O_RDWR | O_NONBLOCK); |
| 586 | if (bfd->fd == -1) { |
| 587 | fprintf(stderr, "%s could not open %s %s\n", |
| 588 | __func__, openstr, strerror(errno)); |
| 589 | exit(-1); |
| 590 | } |
| 591 | dahdi_set_bufinfo(bfd->fd, 0); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 592 | /* We never include the mISDN B-Channel FD into the |
| 593 | * writeset, since it doesn't support poll() based |
| 594 | * write flow control */ |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 595 | bfd->when = BSC_FD_READ | BSC_FD_WRITE; |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 596 | break; |
| 597 | } |
| 598 | |
| 599 | if (bfd->fd < 0) { |
| 600 | fprintf(stderr, "%s could not open %s %s\n", |
| 601 | __func__, openstr, strerror(errno)); |
| 602 | return bfd->fd; |
| 603 | } |
| 604 | |
| 605 | ret = bsc_register_fd(bfd); |
| 606 | if (ret < 0) { |
| 607 | fprintf(stderr, "could not register FD: %s\n", |
| 608 | strerror(ret)); |
| 609 | return ret; |
| 610 | } |
| 611 | } |
| 612 | |
| 613 | return 0; |
| 614 | } |
| 615 | |
| 616 | int mi_e1_line_update(struct e1inp_line *line) |
| 617 | { |
| 618 | struct mISDN_devinfo devinfo; |
Matthew Fredrickson | b1cb8eb | 2010-02-17 19:25:39 +0100 | [diff] [blame] | 619 | //int sk, ret, cnt; |
| 620 | int ret; |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 621 | |
| 622 | if (!line->driver) { |
| 623 | /* this must be the first update */ |
Matthew Fredrickson | bc6649e | 2010-02-16 22:01:36 +0100 | [diff] [blame] | 624 | line->driver = &dahdi_driver; |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 625 | } else { |
| 626 | /* this is a subsequent update */ |
| 627 | /* FIXME: first close all sockets */ |
| 628 | fprintf(stderr, "incremental line updates not supported yet\n"); |
| 629 | return 0; |
| 630 | } |
| 631 | |
Matthew Fredrickson | bc6649e | 2010-02-16 22:01:36 +0100 | [diff] [blame] | 632 | if (line->driver != &dahdi_driver) |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 633 | return -EINVAL; |
| 634 | |
Matthew Fredrickson | bc6649e | 2010-02-16 22:01:36 +0100 | [diff] [blame] | 635 | #if 0 |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 636 | /* open the ISDN card device */ |
| 637 | sk = socket(PF_ISDN, SOCK_RAW, ISDN_P_BASE); |
| 638 | if (sk < 0) { |
| 639 | fprintf(stderr, "%s could not open socket %s\n", |
| 640 | __func__, strerror(errno)); |
| 641 | return sk; |
| 642 | } |
| 643 | |
| 644 | ret = ioctl(sk, IMGETCOUNT, &cnt); |
| 645 | if (ret) { |
| 646 | fprintf(stderr, "%s error getting interf count: %s\n", |
| 647 | __func__, strerror(errno)); |
| 648 | close(sk); |
| 649 | return -ENODEV; |
| 650 | } |
| 651 | //DEBUGP(DMI,"%d device%s found\n", cnt, (cnt==1)?"":"s"); |
| 652 | printf("%d device%s found\n", cnt, (cnt==1)?"":"s"); |
| 653 | #if 1 |
| 654 | devinfo.id = line->num; |
| 655 | ret = ioctl(sk, IMGETDEVINFO, &devinfo); |
| 656 | if (ret < 0) { |
| 657 | fprintf(stdout, "error getting info for device %d: %s\n", |
| 658 | line->num, strerror(errno)); |
| 659 | return -ENODEV; |
| 660 | } |
| 661 | fprintf(stdout, " id: %d\n", devinfo.id); |
| 662 | fprintf(stdout, " Dprotocols: %08x\n", devinfo.Dprotocols); |
| 663 | fprintf(stdout, " Bprotocols: %08x\n", devinfo.Bprotocols); |
| 664 | fprintf(stdout, " protocol: %d\n", devinfo.protocol); |
| 665 | fprintf(stdout, " nrbchan: %d\n", devinfo.nrbchan); |
| 666 | fprintf(stdout, " name: %s\n", devinfo.name); |
| 667 | #endif |
| 668 | |
| 669 | if (!(devinfo.Dprotocols & (1 << ISDN_P_NT_E1))) { |
| 670 | fprintf(stderr, "error: card is not of type E1 (NT-mode)\n"); |
| 671 | return -EINVAL; |
| 672 | } |
Matthew Fredrickson | bc6649e | 2010-02-16 22:01:36 +0100 | [diff] [blame] | 673 | #endif |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 674 | init_flip_bits(); |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 675 | |
| 676 | ret = mi_e1_setup(line, 1); |
| 677 | if (ret) |
| 678 | return ret; |
| 679 | |
Matthew Fredrickson | cc2bc35 | 2010-03-15 12:22:37 -0500 | [diff] [blame] | 680 | lapd_transmit_cb = dahdi_write_msg; |
| 681 | |
Matthew Fredrickson | b5ddc18 | 2010-02-16 21:55:50 +0100 | [diff] [blame] | 682 | return 0; |
| 683 | } |
| 684 | |
| 685 | static __attribute__((constructor)) void on_dso_load_sms(void) |
| 686 | { |
| 687 | /* register the driver with the core */ |
| 688 | e1inp_driver_register(&dahdi_driver); |
| 689 | } |