Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1 | /* OpenBSC Abis input driver for mISDNuser */ |
| 2 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 3 | /* (C) 2008-2011 by Harald Welte <laforge@gnumonks.org> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 4 | * (C) 2009 by Holger Hans Peter Freyther <zecke@selfish.org> |
| 5 | * |
| 6 | * All Rights Reserved |
| 7 | * |
Harald Welte | 323d39d | 2017-11-13 01:09:21 +0900 | [diff] [blame] | 8 | * SPDX-License-Identifier: AGPL-3.0+ |
| 9 | * |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU Affero General Public License as published by |
| 12 | * the Free Software Foundation; either version 3 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU Affero General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU Affero General Public License |
| 21 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 22 | * |
| 23 | */ |
| 24 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 25 | /*! \file misdn.c |
| 26 | * \brief Osmocom A-bis input driver for mISDN |
| 27 | * |
| 28 | * This driver has two modes of operations, exported via two different |
| 29 | * \ref e1_input_driver structures: |
| 30 | * "misdn" is the classic version and it uses the in-kernel LAPD |
| 31 | * implementation. This is somewhat limited in e.g. the fact that |
| 32 | * you can only have one E1 timeslot in signaling mode. |
| 33 | * "misdn_lapd" is a newer version which uses userspace LAPD code |
| 34 | * contained in libosmo-abis. It offers the same flexibilty as the |
| 35 | * DAHDI driver, i.e. any number of signaling slots. |
| 36 | */ |
| 37 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 38 | #include "internal.h" |
| 39 | |
| 40 | #include <stdio.h> |
| 41 | #include <unistd.h> |
| 42 | #include <stdlib.h> |
| 43 | #include <errno.h> |
| 44 | #include <string.h> |
| 45 | #include <time.h> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 46 | #include <sys/socket.h> |
Holger Hans Peter Freyther | 2547458 | 2017-01-23 19:49:07 +0100 | [diff] [blame] | 47 | #include <sys/types.h> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 48 | #include <sys/ioctl.h> |
| 49 | #include <arpa/inet.h> |
| 50 | #include <mISDNif.h> |
| 51 | |
| 52 | //#define AF_COMPATIBILITY_FUNC |
| 53 | //#include <compat_af_isdn.h> |
| 54 | #ifndef AF_ISDN |
| 55 | #define AF_ISDN 34 |
| 56 | #define PF_ISDN AF_ISDN |
| 57 | #endif |
| 58 | |
| 59 | #include <osmocom/core/select.h> |
Harald Welte | 6341aa0 | 2011-08-21 00:55:23 +0200 | [diff] [blame] | 60 | #include <osmocom/core/utils.h> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 61 | #include <osmocom/core/msgb.h> |
| 62 | #include <osmocom/core/logging.h> |
Pablo Neira Ayuso | 177094b | 2011-06-07 12:21:51 +0200 | [diff] [blame] | 63 | #include <osmocom/abis/e1_input.h> |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 64 | #include <osmocom/abis/lapd.h> |
Harald Welte | 71d87b2 | 2011-07-18 14:49:56 +0200 | [diff] [blame] | 65 | #include <osmocom/core/talloc.h> |
Andreas Eversberg | f78c84b | 2023-01-03 20:40:11 +0100 | [diff] [blame] | 66 | #include <osmocom/core/signal.h> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 67 | |
| 68 | #define TS1_ALLOC_SIZE 300 |
| 69 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 70 | /*! \brief driver-specific data for \ref e1inp_line::driver_data */ |
| 71 | struct misdn_line { |
| 72 | int use_userspace_lapd; |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 73 | int unconfirmed_ts[NUM_E1_TS]; |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 74 | int dummy_dchannel; |
Andreas Eversberg | f78c84b | 2023-01-03 20:40:11 +0100 | [diff] [blame] | 75 | int los, ais, rai; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 76 | }; |
| 77 | |
Harald Welte | 6341aa0 | 2011-08-21 00:55:23 +0200 | [diff] [blame] | 78 | const struct value_string prim_names[] = { |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 79 | { PH_CONTROL_IND, "PH_CONTROL_IND" }, |
| 80 | { PH_DATA_IND, "PH_DATA_IND" }, |
| 81 | { PH_DATA_CNF, "PH_DATA_CNF" }, |
| 82 | { PH_ACTIVATE_IND, "PH_ACTIVATE_IND" }, |
| 83 | { DL_ESTABLISH_IND, "DL_ESTABLISH_IND" }, |
| 84 | { DL_ESTABLISH_CNF, "DL_ESTABLISH_CNF" }, |
| 85 | { DL_RELEASE_IND, "DL_RELEASE_IND" }, |
| 86 | { DL_RELEASE_CNF, "DL_RELEASE_CNF" }, |
| 87 | { DL_DATA_IND, "DL_DATA_IND" }, |
| 88 | { DL_UNITDATA_IND, "DL_UNITDATA_IND" }, |
| 89 | { DL_INFORMATION_IND, "DL_INFORMATION_IND" }, |
| 90 | { MPH_ACTIVATE_IND, "MPH_ACTIVATE_IND" }, |
| 91 | { MPH_DEACTIVATE_IND, "MPH_DEACTIVATE_IND" }, |
Harald Welte | 6341aa0 | 2011-08-21 00:55:23 +0200 | [diff] [blame] | 92 | { 0, NULL } |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 93 | }; |
| 94 | |
Andreas Eversberg | f78c84b | 2023-01-03 20:40:11 +0100 | [diff] [blame] | 95 | static int mph_information_ind(struct e1inp_line *line, uint32_t info) |
| 96 | { |
| 97 | struct misdn_line *mline = line->driver_data; |
| 98 | struct input_signal_data isd; |
| 99 | unsigned int signal; |
| 100 | int was_alarm, is_alarm; |
| 101 | |
| 102 | memset(&isd, 0, sizeof(isd)); |
| 103 | isd.line = line; |
| 104 | |
| 105 | was_alarm = mline->los || mline->ais || mline->rai; |
| 106 | |
| 107 | if ((info & ~L1_SIGNAL_SA_MASK) == L1_SIGNAL_SA_BITS) { |
| 108 | isd.sa_bits = info & L1_SIGNAL_SA_MASK; |
| 109 | LOGP(DLMI, LOGL_DEBUG, "%s: Sa61/6=%d, Sa62=%d, Sa63=%d, Sa64=%d, Sa4=%d, Sa5=%d, Sa7=%d, Sa8=%d\n", |
| 110 | get_value_string(e1inp_signal_names, S_L_INP_LINE_SA_BITS), |
| 111 | isd.sa_bits & 1, (isd.sa_bits >> 1) & 1, (isd.sa_bits >> 2) & 1, (isd.sa_bits >> 3) & 1, |
| 112 | (isd.sa_bits >> 4) & 1, (isd.sa_bits >> 5) & 1, (isd.sa_bits >> 6) & 1, isd.sa_bits >> 7); |
| 113 | osmo_signal_dispatch(SS_L_INPUT, S_L_INP_LINE_SA_BITS, &isd); |
| 114 | return 0; |
| 115 | } |
| 116 | |
| 117 | switch (info) { |
| 118 | case L1_SIGNAL_LOS_OFF: |
| 119 | signal = S_L_INP_LINE_NOLOS; |
| 120 | mline->los = 0; |
| 121 | break; |
| 122 | case L1_SIGNAL_LOS_ON: |
| 123 | signal = S_L_INP_LINE_LOS; |
| 124 | mline->los = 1; |
| 125 | break; |
| 126 | case L1_SIGNAL_AIS_OFF: |
| 127 | signal = S_L_INP_LINE_NOAIS; |
| 128 | mline->ais = 0; |
| 129 | break; |
| 130 | case L1_SIGNAL_AIS_ON: |
| 131 | signal = S_L_INP_LINE_AIS; |
| 132 | mline->ais = 1; |
| 133 | break; |
| 134 | case L1_SIGNAL_RDI_OFF: |
| 135 | signal = S_L_INP_LINE_NORAI; |
| 136 | mline->rai = 0; |
| 137 | break; |
| 138 | case L1_SIGNAL_RDI_ON: |
| 139 | signal = S_L_INP_LINE_RAI; |
| 140 | mline->rai = 1; |
| 141 | break; |
| 142 | default: |
| 143 | LOGP(DLMI, LOGL_DEBUG, "Unknown MPH_INFORMATION_IND: 0x%04x\n", info); |
| 144 | return -EINVAL; |
| 145 | } |
| 146 | |
| 147 | LOGP(DLMI, LOGL_DEBUG, "%s\n", get_value_string(e1inp_signal_names, signal)); |
| 148 | osmo_signal_dispatch(SS_L_INPUT, signal, &isd); |
| 149 | |
| 150 | is_alarm = mline->los || mline->ais || mline->rai; |
| 151 | |
| 152 | if (!was_alarm && is_alarm) { |
| 153 | osmo_signal_dispatch(SS_L_INPUT, S_L_INP_LINE_ALARM, &isd); |
| 154 | LOGP(DLMI, LOGL_DEBUG, "%s\n", get_value_string(e1inp_signal_names, S_L_INP_LINE_ALARM)); |
| 155 | } |
| 156 | if (was_alarm && !is_alarm) { |
| 157 | osmo_signal_dispatch(SS_L_INPUT, S_L_INP_LINE_NOALARM, &isd); |
| 158 | LOGP(DLMI, LOGL_DEBUG, "%s\n", get_value_string(e1inp_signal_names, S_L_INP_LINE_NOALARM)); |
| 159 | } |
| 160 | |
| 161 | return 0; |
| 162 | } |
| 163 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 164 | static int handle_ts1_read(struct osmo_fd *bfd) |
| 165 | { |
| 166 | struct e1inp_line *line = bfd->data; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 167 | struct misdn_line *mline = line->driver_data; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 168 | unsigned int ts_nr = bfd->priv_nr; |
| 169 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 170 | struct e1inp_sign_link *link; |
| 171 | struct msgb *msg = msgb_alloc(TS1_ALLOC_SIZE, "mISDN TS1"); |
| 172 | struct sockaddr_mISDN l2addr; |
| 173 | struct mISDNhead *hh; |
| 174 | socklen_t alen; |
| 175 | int ret; |
| 176 | |
| 177 | if (!msg) |
| 178 | return -ENOMEM; |
| 179 | |
| 180 | hh = (struct mISDNhead *) msg->data; |
| 181 | |
| 182 | alen = sizeof(l2addr); |
| 183 | ret = recvfrom(bfd->fd, msg->data, 300, 0, |
| 184 | (struct sockaddr *) &l2addr, &alen); |
| 185 | if (ret < 0) { |
| 186 | fprintf(stderr, "recvfrom error %s\n", strerror(errno)); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 187 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 188 | return ret; |
| 189 | } |
| 190 | |
| 191 | if (alen != sizeof(l2addr)) { |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 192 | fprintf(stderr, "%s error len\n", __func__); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 193 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 194 | return -EINVAL; |
| 195 | } |
| 196 | |
| 197 | msgb_put(msg, ret); |
| 198 | |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 199 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "alen =%d, dev(%d) channel(%d) sapi(%d) tei(%d)\n", |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 200 | alen, l2addr.dev, l2addr.channel, l2addr.sapi, l2addr.tei); |
| 201 | |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 202 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "<= len = %d, prim(0x%x) id(0x%x): %s\n", |
Harald Welte | 6341aa0 | 2011-08-21 00:55:23 +0200 | [diff] [blame] | 203 | ret, hh->prim, hh->id, get_value_string(prim_names, hh->prim)); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 204 | |
| 205 | switch (hh->prim) { |
| 206 | case DL_INFORMATION_IND: |
| 207 | /* mISDN tells us which channel number is allocated for this |
| 208 | * tuple of (SAPI, TEI). */ |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 209 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "DL_INFORMATION_IND: use channel(%d) sapi(%d) tei(%d) for now\n", |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 210 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 211 | link = e1inp_lookup_sign_link(e1i_ts, l2addr.tei, l2addr.sapi); |
| 212 | if (!link) { |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 213 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "mISDN message for unknown sign_link\n"); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 214 | msgb_free(msg); |
| 215 | return -EINVAL; |
| 216 | } |
| 217 | /* save the channel number in the driver private struct */ |
| 218 | link->driver.misdn.channel = l2addr.channel; |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 219 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 220 | break; |
| 221 | case DL_ESTABLISH_IND: |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 222 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "DL_ESTABLISH_IND: channel(%d) sapi(%d) tei(%d)\n", |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 223 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 224 | /* For some strange reason, sometimes the DL_INFORMATION_IND tells |
| 225 | * us the wrong channel, and we only get the real channel number |
| 226 | * during the DL_ESTABLISH_IND */ |
| 227 | link = e1inp_lookup_sign_link(e1i_ts, l2addr.tei, l2addr.sapi); |
| 228 | if (!link) { |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 229 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "mISDN message for unknown sign_link\n"); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 230 | msgb_free(msg); |
| 231 | return -EINVAL; |
| 232 | } |
| 233 | /* save the channel number in the driver private struct */ |
| 234 | link->driver.misdn.channel = l2addr.channel; |
Pablo Neira Ayuso | de66891 | 2011-08-16 17:26:23 +0200 | [diff] [blame] | 235 | ret = e1inp_event(e1i_ts, S_L_INP_TEI_UP, l2addr.tei, l2addr.sapi); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 236 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 237 | break; |
| 238 | case DL_RELEASE_IND: |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 239 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "DL_RELEASE_IND: channel(%d) sapi(%d) tei(%d)\n", |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 240 | l2addr.channel, l2addr.sapi, l2addr.tei); |
Pablo Neira Ayuso | de66891 | 2011-08-16 17:26:23 +0200 | [diff] [blame] | 241 | ret = e1inp_event(e1i_ts, S_L_INP_TEI_DN, l2addr.tei, l2addr.sapi); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 242 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 243 | break; |
| 244 | case DL_DATA_IND: |
| 245 | case DL_UNITDATA_IND: |
| 246 | msg->l2h = msg->data + MISDN_HEADER_LEN; |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 247 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "RX: %s\n", osmo_hexdump(msgb_l2(msg), ret - MISDN_HEADER_LEN)); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 248 | if (mline->use_userspace_lapd) { |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 249 | LOGPITS(e1i_ts, DLMI, LOGL_ERROR, "DL_DATA_IND but userspace LAPD ?!?\n"); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 250 | msgb_free(msg); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 251 | return -EIO; |
| 252 | } |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 253 | ret = e1inp_rx_ts(e1i_ts, msg, l2addr.tei, l2addr.sapi); |
| 254 | break; |
| 255 | case PH_ACTIVATE_IND: |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 256 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "PH_ACTIVATE_IND: channel(%d) sapi(%d) tei(%d)\n", |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 257 | l2addr.channel, l2addr.sapi, l2addr.tei); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 258 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 259 | break; |
| 260 | case PH_DEACTIVATE_IND: |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 261 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "PH_DEACTIVATE_IND: channel(%d) sapi(%d) tei(%d)\n", |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 262 | l2addr.channel, l2addr.sapi, l2addr.tei); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 263 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 264 | break; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 265 | case PH_DATA_IND: |
| 266 | if (!mline->use_userspace_lapd) { |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 267 | LOGPITS(e1i_ts, DLMI, LOGL_ERROR, "PH_DATA_IND but kernel LAPD ?!?\n"); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 268 | return -EIO; |
| 269 | } |
| 270 | /* remove the Misdn Header */ |
| 271 | msgb_pull(msg, MISDN_HEADER_LEN); |
| 272 | /* hand into the LAPD code */ |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 273 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "RX: %s\n", osmo_hexdump(msg->data, msg->len)); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 274 | ret = e1inp_rx_ts_lapd(e1i_ts, msg); |
| 275 | break; |
Andreas Eversberg | f78c84b | 2023-01-03 20:40:11 +0100 | [diff] [blame] | 276 | case MPH_INFORMATION_IND: |
| 277 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "MPH_INFORMATION_IND\n"); |
| 278 | /* remove the Misdn Header */ |
| 279 | msgb_pull(msg, MISDN_HEADER_LEN); |
| 280 | mph_information_ind(line, *((uint32_t *)msg->data)); |
| 281 | msgb_free(msg); |
| 282 | break; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 283 | default: |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 284 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 285 | break; |
| 286 | } |
| 287 | return ret; |
| 288 | } |
| 289 | |
| 290 | static int ts_want_write(struct e1inp_ts *e1i_ts) |
| 291 | { |
| 292 | /* We never include the mISDN B-Channel FD into the |
| 293 | * writeset, since it doesn't support poll() based |
| 294 | * write flow control */ |
Harald Welte | b3952c6 | 2020-06-20 22:07:36 +0200 | [diff] [blame] | 295 | if (e1i_ts->type == E1INP_TS_TYPE_TRAU || |
| 296 | e1i_ts->type == E1INP_TS_TYPE_I460) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 297 | return 0; |
| 298 | |
Harald Welte | 949b8a2 | 2020-10-18 23:01:53 +0200 | [diff] [blame] | 299 | osmo_fd_write_enable(&e1i_ts->driver.misdn.fd); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 300 | |
| 301 | return 0; |
| 302 | } |
| 303 | |
Andreas Eversberg | 982e5aa | 2023-01-03 20:40:58 +0100 | [diff] [blame] | 304 | static int set_sa_bits(struct e1inp_line *line, uint8_t sa_bits) |
| 305 | { |
| 306 | struct e1inp_ts *e1i_ts = &line->ts[16-1]; |
| 307 | struct osmo_fd *bfd = &e1i_ts->driver.misdn.fd; |
| 308 | uint8_t buffer[sizeof(struct mISDNhead) + sizeof(uint32_t)]; |
| 309 | struct mISDNhead *hh = (struct mISDNhead *)buffer; |
| 310 | uint32_t *info = (uint32_t *)(buffer + sizeof(struct mISDNhead)); |
| 311 | int ret; |
| 312 | |
| 313 | LOGP(DLMI, LOGL_DEBUG, "MPH_INFORMATION_REQ: Sa4=%d, Sa5=%d, Sa6=%d, Sa7=%d, Sa8=%d\n", |
| 314 | (sa_bits >> 4) & 1, (sa_bits >> 5) & 1, sa_bits & 1, (sa_bits >> 6) & 1, sa_bits >> 7); |
| 315 | |
| 316 | hh->prim = MPH_INFORMATION_REQ; |
| 317 | hh->id = TEI_SAPI | (GROUP_TEI << 8); /* manager address */ |
| 318 | *info = L1_SIGNAL_SA_BITS | sa_bits; |
| 319 | |
| 320 | ret = write(bfd->fd, &buffer, sizeof(buffer)); |
| 321 | if (ret < 0) |
| 322 | LOGP(DLINP, LOGL_ERROR, "MPH_INFORMATION_REQ returns %d\n", ret); |
| 323 | return ret; |
| 324 | } |
| 325 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 326 | static void timeout_ts1_write(void *data) |
| 327 | { |
| 328 | struct e1inp_ts *e1i_ts = (struct e1inp_ts *)data; |
| 329 | |
| 330 | /* trigger write of ts1, due to tx delay timer */ |
| 331 | ts_want_write(e1i_ts); |
| 332 | } |
| 333 | |
| 334 | static int handle_ts1_write(struct osmo_fd *bfd) |
| 335 | { |
| 336 | struct e1inp_line *line = bfd->data; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 337 | struct misdn_line *mline = line->driver_data; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 338 | unsigned int ts_nr = bfd->priv_nr; |
| 339 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 340 | struct e1inp_sign_link *sign_link; |
| 341 | struct sockaddr_mISDN sa; |
| 342 | struct msgb *msg; |
| 343 | struct mISDNhead *hh; |
| 344 | uint8_t *l2_data; |
| 345 | int ret; |
| 346 | |
Harald Welte | 949b8a2 | 2020-10-18 23:01:53 +0200 | [diff] [blame] | 347 | osmo_fd_write_disable(bfd); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 348 | |
| 349 | /* get the next msg for this timeslot */ |
| 350 | msg = e1inp_tx_ts(e1i_ts, &sign_link); |
| 351 | if (!msg) { |
| 352 | /* no message after tx delay timer */ |
| 353 | return 0; |
| 354 | } |
| 355 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 356 | if (mline->use_userspace_lapd) { |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 357 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "TX %u/%u/%u: %s\n", line->num, sign_link->tei, |
| 358 | sign_link->sapi, osmo_hexdump(msg->data, msg->len)); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 359 | lapd_transmit(e1i_ts->lapd, sign_link->tei, |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 360 | sign_link->sapi, msg); |
Holger Hans Peter Freyther | 5731dd7 | 2013-03-09 17:35:17 +0100 | [diff] [blame] | 361 | ret = 0; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 362 | } else { |
| 363 | l2_data = msg->data; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 364 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 365 | /* prepend the mISDNhead */ |
| 366 | hh = (struct mISDNhead *) msgb_push(msg, sizeof(*hh)); |
| 367 | hh->prim = DL_DATA_REQ; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 368 | |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 369 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "TX channel(%d) TEI(%d) SAPI(%d): %s\n", |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 370 | sign_link->driver.misdn.channel, sign_link->tei, |
| 371 | sign_link->sapi, osmo_hexdump(l2_data, msg->len - MISDN_HEADER_LEN)); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 372 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 373 | /* construct the sockaddr */ |
| 374 | sa.family = AF_ISDN; |
| 375 | sa.sapi = sign_link->sapi; |
| 376 | sa.dev = sign_link->tei; |
| 377 | sa.channel = sign_link->driver.misdn.channel; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 378 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 379 | ret = sendto(bfd->fd, msg->data, msg->len, 0, |
| 380 | (struct sockaddr *)&sa, sizeof(sa)); |
| 381 | if (ret < 0) |
| 382 | fprintf(stderr, "%s sendto failed %d\n", __func__, ret); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 383 | |
| 384 | msgb_free(msg); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 385 | } |
| 386 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 387 | |
| 388 | /* set tx delay timer for next event */ |
Pablo Neira Ayuso | b26f2fd | 2017-06-07 18:32:13 +0200 | [diff] [blame] | 389 | osmo_timer_setup(&e1i_ts->sign.tx_timer, timeout_ts1_write, e1i_ts); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 390 | osmo_timer_schedule(&e1i_ts->sign.tx_timer, 0, e1i_ts->sign.delay); |
| 391 | |
| 392 | return ret; |
| 393 | } |
| 394 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 395 | /*! \brief call-back from LAPD code, called when it wants to Tx data */ |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 396 | static void misdn_write_msg(struct msgb *msg, void *cbdata) |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 397 | { |
| 398 | struct osmo_fd *bfd = cbdata; |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 399 | struct e1inp_line *line = bfd->data; |
| 400 | unsigned int ts_nr = bfd->priv_nr; |
| 401 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 402 | struct mISDNhead *hh; |
| 403 | int ret; |
| 404 | |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 405 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "PH_DATA_REQ: len=%d %s\n", msg->len, |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 406 | osmo_hexdump(msg->data, msg->len)); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 407 | |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 408 | hh = (struct mISDNhead *) msgb_push(msg, MISDN_HEADER_LEN); |
| 409 | hh->prim = PH_DATA_REQ; |
| 410 | hh->id = 0; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 411 | |
| 412 | ret = write(bfd->fd, msg->data, msg->len); |
| 413 | if (ret < 0) |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 414 | LOGPITS(e1i_ts, DLMI, LOGL_NOTICE, "write failed %d\n", ret); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 415 | |
| 416 | msgb_free(msg); |
| 417 | } |
| 418 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 419 | /* write to a B channel TS */ |
Andreas Eversberg | d73c846 | 2011-12-20 18:56:42 +0100 | [diff] [blame] | 420 | static int handle_tsX_write(struct osmo_fd *bfd, int len) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 421 | { |
| 422 | struct e1inp_line *line = bfd->data; |
| 423 | unsigned int ts_nr = bfd->priv_nr; |
| 424 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 425 | struct mISDNhead *hh; |
Andreas Eversberg | d73c846 | 2011-12-20 18:56:42 +0100 | [diff] [blame] | 426 | uint8_t tx_buf[len + sizeof(*hh)]; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 427 | struct subch_mux *mx = &e1i_ts->trau.mux; |
| 428 | int ret; |
| 429 | |
| 430 | hh = (struct mISDNhead *) tx_buf; |
| 431 | hh->prim = PH_DATA_REQ; |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 432 | hh->id = 0; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 433 | |
Andreas Eversberg | d73c846 | 2011-12-20 18:56:42 +0100 | [diff] [blame] | 434 | subchan_mux_out(mx, tx_buf+sizeof(*hh), len); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 435 | |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 436 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "BCHAN TX: %s\n", osmo_hexdump(tx_buf+sizeof(*hh), len)); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 437 | |
Andreas Eversberg | d73c846 | 2011-12-20 18:56:42 +0100 | [diff] [blame] | 438 | ret = send(bfd->fd, tx_buf, sizeof(*hh) + len, 0); |
| 439 | if (ret < sizeof(*hh) + len) |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 440 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "send returns %d instead of %zu\n", ret, sizeof(*hh) + len); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 441 | |
| 442 | return ret; |
| 443 | } |
| 444 | |
| 445 | #define TSX_ALLOC_SIZE 4096 |
| 446 | /* FIXME: read from a B channel TS */ |
| 447 | static int handle_tsX_read(struct osmo_fd *bfd) |
| 448 | { |
| 449 | struct e1inp_line *line = bfd->data; |
| 450 | unsigned int ts_nr = bfd->priv_nr; |
| 451 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 452 | struct msgb *msg = msgb_alloc(TSX_ALLOC_SIZE, "mISDN TSx"); |
| 453 | struct mISDNhead *hh; |
| 454 | int ret; |
| 455 | |
| 456 | if (!msg) |
| 457 | return -ENOMEM; |
| 458 | |
| 459 | hh = (struct mISDNhead *) msg->data; |
| 460 | |
| 461 | ret = recv(bfd->fd, msg->data, TSX_ALLOC_SIZE, 0); |
| 462 | if (ret < 0) { |
| 463 | fprintf(stderr, "recvfrom error %s\n", strerror(errno)); |
| 464 | return ret; |
| 465 | } |
| 466 | |
| 467 | msgb_put(msg, ret); |
| 468 | |
| 469 | if (hh->prim != PH_CONTROL_IND) |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 470 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "<= BCHAN len = %d, prim(0x%x) id(0x%x): %s\n", |
| 471 | ret, hh->prim, hh->id, get_value_string(prim_names, hh->prim)); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 472 | |
| 473 | switch (hh->prim) { |
| 474 | case PH_DATA_IND: |
Andreas Eversberg | 32a2087 | 2022-12-04 13:12:09 +0100 | [diff] [blame] | 475 | /* remove the Misdn Header */ |
| 476 | msg->l2h = msgb_pull(msg, MISDN_HEADER_LEN); |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 477 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "BCHAN RX: %s\n", |
Andreas Eversberg | 32a2087 | 2022-12-04 13:12:09 +0100 | [diff] [blame] | 478 | osmo_hexdump(msgb_l2(msg), msgb_l2len(msg))); |
Andreas Eversberg | d73c846 | 2011-12-20 18:56:42 +0100 | [diff] [blame] | 479 | /* the number of bytes received indicates that data to send */ |
| 480 | handle_tsX_write(bfd, msgb_l2len(msg)); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 481 | return e1inp_rx_ts(e1i_ts, msg, 0, 0); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 482 | case PH_ACTIVATE_IND: |
| 483 | case PH_DATA_CNF: |
Andreas Eversberg | d73c846 | 2011-12-20 18:56:42 +0100 | [diff] [blame] | 484 | break; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 485 | default: |
| 486 | break; |
| 487 | } |
| 488 | /* FIXME: why do we free signalling msgs in the caller, and trau not? */ |
| 489 | msgb_free(msg); |
| 490 | |
| 491 | return ret; |
| 492 | } |
| 493 | |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 494 | /* write to a raw channel TS */ |
Andreas Eversberg | 79c4932 | 2022-12-04 13:13:12 +0100 | [diff] [blame] | 495 | static int handle_ts_raw_write(struct osmo_fd *bfd) |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 496 | { |
| 497 | struct e1inp_line *line = bfd->data; |
Andreas Eversberg | 79c4932 | 2022-12-04 13:13:12 +0100 | [diff] [blame] | 498 | struct misdn_line *mline = line->driver_data; |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 499 | unsigned int ts_nr = bfd->priv_nr; |
| 500 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 501 | struct msgb *msg; |
| 502 | struct mISDNhead *hh; |
| 503 | int ret; |
| 504 | |
Andreas Eversberg | 79c4932 | 2022-12-04 13:13:12 +0100 | [diff] [blame] | 505 | osmo_fd_write_disable(bfd); |
| 506 | |
| 507 | if (mline->unconfirmed_ts[ts_nr-1]) |
| 508 | return 0; |
| 509 | |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 510 | /* get the next msg for this timeslot */ |
| 511 | msg = e1inp_tx_ts(e1i_ts, NULL); |
| 512 | if (!msg) |
| 513 | return 0; |
| 514 | |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 515 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "RAW CHAN TX: %s\n", osmo_hexdump(msg->data, msg->len)); |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 516 | |
Andreas Eversberg | bbc4745 | 2023-01-03 20:41:40 +0100 | [diff] [blame^] | 517 | osmo_revbytebits_buf(msg->data, msg->len); |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 518 | hh = (struct mISDNhead *) msgb_push(msg, sizeof(*hh)); |
| 519 | hh->prim = PH_DATA_REQ; |
| 520 | hh->id = 0; |
| 521 | |
| 522 | ret = write(bfd->fd, msg->data, msg->len); |
| 523 | if (ret < msg->len) |
Andreas Eversberg | 79c4932 | 2022-12-04 13:13:12 +0100 | [diff] [blame] | 524 | LOGPITS(e1i_ts, DLINP, LOGL_NOTICE, "send returns %d instead of %d\n", ret, msg->len); |
| 525 | else |
| 526 | mline->unconfirmed_ts[ts_nr-1] = 1; |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 527 | msgb_free(msg); |
| 528 | |
Andreas Eversberg | 79c4932 | 2022-12-04 13:13:12 +0100 | [diff] [blame] | 529 | |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 530 | return ret; |
| 531 | } |
| 532 | |
| 533 | static int handle_ts_raw_read(struct osmo_fd *bfd) |
| 534 | { |
| 535 | struct e1inp_line *line = bfd->data; |
Andreas Eversberg | 79c4932 | 2022-12-04 13:13:12 +0100 | [diff] [blame] | 536 | struct misdn_line *mline = line->driver_data; |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 537 | unsigned int ts_nr = bfd->priv_nr; |
| 538 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 539 | struct msgb *msg = msgb_alloc(TSX_ALLOC_SIZE, "mISDN TS RAW"); |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 540 | struct mISDNhead *hh; |
| 541 | int ret; |
| 542 | |
| 543 | if (!msg) |
| 544 | return -ENOMEM; |
| 545 | |
| 546 | hh = (struct mISDNhead *) msg->data; |
| 547 | |
| 548 | ret = recv(bfd->fd, msg->data, TSX_ALLOC_SIZE, 0); |
| 549 | if (ret < 0) { |
| 550 | fprintf(stderr, "recvfrom error %s\n", strerror(errno)); |
| 551 | return ret; |
| 552 | } |
| 553 | |
| 554 | msgb_put(msg, ret); |
| 555 | |
| 556 | if (hh->prim != PH_CONTROL_IND) |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 557 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "<= RAW CHAN len = %d, prim(0x%x) id(0x%x): %s\n", |
| 558 | ret, hh->prim, hh->id, get_value_string(prim_names, hh->prim)); |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 559 | |
| 560 | switch (hh->prim) { |
| 561 | case PH_DATA_IND: |
Andreas Eversberg | 32a2087 | 2022-12-04 13:12:09 +0100 | [diff] [blame] | 562 | /* remove the Misdn Header */ |
| 563 | msg->l2h = msgb_pull(msg, MISDN_HEADER_LEN); |
Andreas Eversberg | bbc4745 | 2023-01-03 20:41:40 +0100 | [diff] [blame^] | 564 | osmo_revbytebits_buf(msg->data, msg->len); |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 565 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "RAW CHAN RX: %s\n", |
Andreas Eversberg | 32a2087 | 2022-12-04 13:12:09 +0100 | [diff] [blame] | 566 | osmo_hexdump(msgb_l2(msg), msgb_l2len(msg))); |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 567 | return e1inp_rx_ts(e1i_ts, msg, 0, 0); |
| 568 | case PH_ACTIVATE_IND: |
Andreas Eversberg | 79c4932 | 2022-12-04 13:13:12 +0100 | [diff] [blame] | 569 | break; |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 570 | case PH_DATA_CNF: |
Andreas Eversberg | 79c4932 | 2022-12-04 13:13:12 +0100 | [diff] [blame] | 571 | mline->unconfirmed_ts[ts_nr-1] = 0; |
| 572 | osmo_fd_write_enable(bfd); |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 573 | break; |
| 574 | default: |
| 575 | break; |
| 576 | } |
| 577 | /* FIXME: why do we free signalling msgs in the caller, and trau not? */ |
| 578 | msgb_free(msg); |
| 579 | |
| 580 | return ret; |
| 581 | } |
| 582 | |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 583 | /* write to a hdlc channel TS */ |
| 584 | static int handle_ts_hdlc_write(struct osmo_fd *bfd) |
| 585 | { |
| 586 | struct e1inp_line *line = bfd->data; |
| 587 | struct misdn_line *mline = line->driver_data; |
| 588 | unsigned int ts_nr = bfd->priv_nr; |
| 589 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 590 | struct msgb *msg; |
| 591 | struct mISDNhead *hh; |
| 592 | int ret; |
| 593 | |
| 594 | osmo_fd_write_disable(bfd); |
| 595 | |
| 596 | if (mline->unconfirmed_ts[ts_nr-1]) |
| 597 | return 0; |
| 598 | |
| 599 | /* get the next msg for this timeslot */ |
| 600 | msg = e1inp_tx_ts(e1i_ts, NULL); |
| 601 | if (!msg) |
| 602 | return 0; |
| 603 | |
| 604 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "HDLC CHAN TX: %s\n", osmo_hexdump(msg->data, msg->len)); |
| 605 | |
| 606 | hh = (struct mISDNhead *) msgb_push(msg, sizeof(*hh)); |
| 607 | hh->prim = PH_DATA_REQ; |
| 608 | hh->id = 0; |
| 609 | |
| 610 | ret = write(bfd->fd, msg->data, msg->len); |
| 611 | if (ret < msg->len) |
| 612 | LOGPITS(e1i_ts, DLINP, LOGL_NOTICE, "send returns %d instead of %d\n", ret, msg->len); |
| 613 | else |
| 614 | mline->unconfirmed_ts[ts_nr-1] = 1; |
| 615 | msgb_free(msg); |
| 616 | |
| 617 | |
| 618 | return ret; |
| 619 | } |
| 620 | |
| 621 | static int handle_ts_hdlc_read(struct osmo_fd *bfd) |
| 622 | { |
| 623 | struct e1inp_line *line = bfd->data; |
| 624 | struct misdn_line *mline = line->driver_data; |
| 625 | unsigned int ts_nr = bfd->priv_nr; |
| 626 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 627 | struct msgb *msg = msgb_alloc(TSX_ALLOC_SIZE, "mISDN TS HDLC"); |
| 628 | struct mISDNhead *hh; |
| 629 | int ret; |
| 630 | |
| 631 | if (!msg) |
| 632 | return -ENOMEM; |
| 633 | |
| 634 | hh = (struct mISDNhead *) msg->data; |
| 635 | |
| 636 | ret = recv(bfd->fd, msg->data, TSX_ALLOC_SIZE, 0); |
| 637 | if (ret < 0) { |
| 638 | fprintf(stderr, "recvfrom error %s\n", strerror(errno)); |
| 639 | return ret; |
| 640 | } |
| 641 | |
| 642 | msgb_put(msg, ret); |
| 643 | |
| 644 | if (hh->prim != PH_CONTROL_IND) |
| 645 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "<= HDLC CHAN len = %d, prim(0x%x) id(0x%x): %s\n", |
| 646 | ret, hh->prim, hh->id, get_value_string(prim_names, hh->prim)); |
| 647 | |
| 648 | switch (hh->prim) { |
| 649 | case PH_DATA_IND: |
Andreas Eversberg | 32a2087 | 2022-12-04 13:12:09 +0100 | [diff] [blame] | 650 | /* remove the Misdn Header */ |
| 651 | msgb_pull(msg, MISDN_HEADER_LEN); |
| 652 | msg->l2h = msg->data; |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 653 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "HDLC CHAN RX: %s\n", |
Andreas Eversberg | 32a2087 | 2022-12-04 13:12:09 +0100 | [diff] [blame] | 654 | osmo_hexdump(msgb_l2(msg), msgb_l2len(msg))); |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 655 | return e1inp_rx_ts(e1i_ts, msg, 0, 0); |
| 656 | case PH_ACTIVATE_IND: |
| 657 | break; |
| 658 | case PH_DATA_CNF: |
| 659 | mline->unconfirmed_ts[ts_nr-1] = 0; |
| 660 | osmo_fd_write_enable(bfd); |
| 661 | break; |
Andreas Eversberg | f78c84b | 2023-01-03 20:40:11 +0100 | [diff] [blame] | 662 | case MPH_INFORMATION_IND: |
| 663 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "MPH_INFORMATION_IND\n"); |
| 664 | /* remove the Misdn Header */ |
| 665 | msgb_pull(msg, MISDN_HEADER_LEN); |
| 666 | mph_information_ind(line, *((uint32_t *)msg->data)); |
| 667 | break; |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 668 | default: |
| 669 | break; |
| 670 | } |
| 671 | /* FIXME: why do we free signalling msgs in the caller, and trau not? */ |
| 672 | msgb_free(msg); |
| 673 | |
| 674 | return ret; |
| 675 | } |
| 676 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 677 | /* callback from select.c in case one of the fd's can be read/written */ |
| 678 | static int misdn_fd_cb(struct osmo_fd *bfd, unsigned int what) |
| 679 | { |
| 680 | struct e1inp_line *line = bfd->data; |
| 681 | unsigned int ts_nr = bfd->priv_nr; |
| 682 | unsigned int idx = ts_nr-1; |
| 683 | struct e1inp_ts *e1i_ts = &line->ts[idx]; |
| 684 | int rc = 0; |
| 685 | |
| 686 | switch (e1i_ts->type) { |
| 687 | case E1INP_TS_TYPE_SIGN: |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 688 | if (what & OSMO_FD_READ) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 689 | rc = handle_ts1_read(bfd); |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 690 | if (what & OSMO_FD_WRITE) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 691 | rc = handle_ts1_write(bfd); |
| 692 | break; |
| 693 | case E1INP_TS_TYPE_TRAU: |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 694 | if (what & OSMO_FD_READ) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 695 | rc = handle_tsX_read(bfd); |
| 696 | /* We never include the mISDN B-Channel FD into the |
| 697 | * writeset, since it doesn't support poll() based |
| 698 | * write flow control */ |
| 699 | break; |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 700 | case E1INP_TS_TYPE_RAW: |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 701 | if (what & OSMO_FD_READ) |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 702 | rc = handle_ts_raw_read(bfd); |
Andreas Eversberg | 79c4932 | 2022-12-04 13:13:12 +0100 | [diff] [blame] | 703 | if (what & OSMO_FD_WRITE) |
| 704 | rc = handle_ts_raw_write(bfd); |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 705 | break; |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 706 | case E1INP_TS_TYPE_HDLC: |
| 707 | if (what & OSMO_FD_READ) |
| 708 | rc = handle_ts_hdlc_read(bfd); |
| 709 | if (what & OSMO_FD_WRITE) |
| 710 | rc = handle_ts_hdlc_write(bfd); |
| 711 | break; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 712 | default: |
| 713 | fprintf(stderr, "unknown E1 TS type %u\n", e1i_ts->type); |
| 714 | break; |
| 715 | } |
| 716 | |
| 717 | return rc; |
| 718 | } |
| 719 | |
| 720 | static int activate_bchan(struct e1inp_line *line, int ts, int act) |
| 721 | { |
| 722 | struct mISDNhead hh; |
| 723 | int ret; |
| 724 | unsigned int idx = ts-1; |
| 725 | struct e1inp_ts *e1i_ts = &line->ts[idx]; |
| 726 | struct osmo_fd *bfd = &e1i_ts->driver.misdn.fd; |
| 727 | |
| 728 | fprintf(stdout, "activate bchan\n"); |
| 729 | if (act) |
| 730 | hh.prim = PH_ACTIVATE_REQ; |
| 731 | else |
| 732 | hh.prim = PH_DEACTIVATE_REQ; |
| 733 | |
| 734 | hh.id = MISDN_ID_ANY; |
| 735 | ret = sendto(bfd->fd, &hh, sizeof(hh), 0, NULL, 0); |
| 736 | if (ret < 0) { |
| 737 | fprintf(stdout, "could not send ACTIVATE_RQ %s\n", |
| 738 | strerror(errno)); |
| 739 | } |
| 740 | |
| 741 | return ret; |
| 742 | } |
| 743 | |
Pablo Neira Ayuso | 4e862cb | 2011-08-19 18:43:38 +0200 | [diff] [blame] | 744 | static int mi_e1_line_update(struct e1inp_line *line); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 745 | static int mi_e1_line_update_lapd(struct e1inp_line *line); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 746 | |
| 747 | struct e1inp_driver misdn_driver = { |
| 748 | .name = "misdn", |
| 749 | .want_write = ts_want_write, |
Andreas Eversberg | 982e5aa | 2023-01-03 20:40:58 +0100 | [diff] [blame] | 750 | .set_sa_bits = set_sa_bits, |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 751 | .default_delay = 50000, |
| 752 | .line_update = &mi_e1_line_update, |
| 753 | }; |
| 754 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 755 | struct e1inp_driver misdn_lapd_driver = { |
| 756 | .name = "misdn_lapd", |
| 757 | .want_write = ts_want_write, |
| 758 | .default_delay = 50000, |
| 759 | .line_update = &mi_e1_line_update_lapd, |
| 760 | }; |
| 761 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 762 | static int mi_e1_setup(struct e1inp_line *line, int release_l2) |
| 763 | { |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 764 | struct misdn_line *mline = line->driver_data; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 765 | int ts, ret; |
| 766 | |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 767 | mline->dummy_dchannel = -1; |
| 768 | if (mline->use_userspace_lapd) { |
| 769 | /* Open dummy d-channel in order to use b-channels. |
| 770 | * Also it is required to define the mode. |
| 771 | */ |
| 772 | if (mline->dummy_dchannel < 0) { |
| 773 | struct sockaddr_mISDN addr; |
| 774 | |
| 775 | mline->dummy_dchannel = socket(PF_ISDN, SOCK_DGRAM, |
| 776 | ISDN_P_NT_E1); |
| 777 | if (mline->dummy_dchannel < 0) { |
| 778 | fprintf(stderr, "%s could not open socket %s\n", |
| 779 | __func__, strerror(errno)); |
| 780 | return mline->dummy_dchannel; |
| 781 | } |
| 782 | memset(&addr, 0, sizeof(addr)); |
| 783 | addr.family = AF_ISDN; |
Andreas Eversberg | 4308667 | 2012-01-18 19:06:12 +0100 | [diff] [blame] | 784 | addr.dev = line->port_nr; |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 785 | addr.channel = 0; |
| 786 | addr.sapi = 0; |
| 787 | addr.tei = GROUP_TEI; |
| 788 | ret = bind(mline->dummy_dchannel, |
| 789 | (struct sockaddr *) &addr, sizeof(addr)); |
| 790 | if (ret < 0) { |
| 791 | fprintf(stderr, "could not bind l2 socket %s\n", |
| 792 | strerror(errno)); |
| 793 | return -EIO; |
| 794 | } |
| 795 | } |
| 796 | } |
| 797 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 798 | /* TS0 is CRC4, don't need any fd for it */ |
| 799 | for (ts = 1; ts < NUM_E1_TS; ts++) { |
| 800 | unsigned int idx = ts-1; |
| 801 | struct e1inp_ts *e1i_ts = &line->ts[idx]; |
| 802 | struct osmo_fd *bfd = &e1i_ts->driver.misdn.fd; |
| 803 | struct sockaddr_mISDN addr; |
| 804 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 805 | switch (e1i_ts->type) { |
| 806 | case E1INP_TS_TYPE_NONE: |
| 807 | continue; |
| 808 | break; |
Harald Welte | 7a228eb | 2016-07-28 11:09:31 +0200 | [diff] [blame] | 809 | case E1INP_TS_TYPE_HDLC: |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 810 | /* TS 16 is the D-channel, so we use D-channel proto */ |
Harald Welte | 7a228eb | 2016-07-28 11:09:31 +0200 | [diff] [blame] | 811 | bfd->fd = socket(PF_ISDN, SOCK_DGRAM, |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 812 | (ts == 16) ? ISDN_P_NT_E1 : ISDN_P_B_HDLC); |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 813 | bfd->when = OSMO_FD_READ; |
Harald Welte | 7a228eb | 2016-07-28 11:09:31 +0200 | [diff] [blame] | 814 | break; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 815 | case E1INP_TS_TYPE_SIGN: |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 816 | if (mline->use_userspace_lapd) |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 817 | bfd->fd = socket(PF_ISDN, SOCK_DGRAM, |
| 818 | ISDN_P_B_HDLC); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 819 | else |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 820 | bfd->fd = socket(PF_ISDN, SOCK_DGRAM, |
| 821 | ISDN_P_LAPD_NT); |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 822 | bfd->when = OSMO_FD_READ; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 823 | break; |
| 824 | case E1INP_TS_TYPE_TRAU: |
Harald Welte | b3952c6 | 2020-06-20 22:07:36 +0200 | [diff] [blame] | 825 | case E1INP_TS_TYPE_I460: |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 826 | case E1INP_TS_TYPE_RAW: |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 827 | bfd->fd = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_RAW); |
| 828 | /* We never include the mISDN B-Channel FD into the |
| 829 | * writeset, since it doesn't support poll() based |
| 830 | * write flow control */ |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 831 | bfd->when = OSMO_FD_READ; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 832 | break; |
| 833 | } |
| 834 | |
| 835 | if (bfd->fd < 0) { |
| 836 | fprintf(stderr, "%s could not open socket %s\n", |
| 837 | __func__, strerror(errno)); |
| 838 | return bfd->fd; |
| 839 | } |
| 840 | |
| 841 | memset(&addr, 0, sizeof(addr)); |
| 842 | addr.family = AF_ISDN; |
Harald Welte | c288951 | 2011-09-13 23:49:04 +0100 | [diff] [blame] | 843 | addr.dev = line->port_nr; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 844 | switch (e1i_ts->type) { |
| 845 | case E1INP_TS_TYPE_SIGN: |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 846 | if (mline->use_userspace_lapd) { |
Harald Welte | b903188 | 2020-05-02 21:09:15 +0200 | [diff] [blame] | 847 | char name[32]; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 848 | addr.channel = ts; |
Harald Welte | b903188 | 2020-05-02 21:09:15 +0200 | [diff] [blame] | 849 | e1inp_ts_name(name, sizeof(name), e1i_ts); |
| 850 | e1i_ts->lapd = lapd_instance_alloc2(1, |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 851 | misdn_write_msg, bfd, e1inp_dlsap_up, |
Harald Welte | b903188 | 2020-05-02 21:09:15 +0200 | [diff] [blame] | 852 | e1i_ts, &lapd_profile_abis, name); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 853 | } else { |
| 854 | addr.channel = 0; |
| 855 | /* SAPI not supported yet in kernel */ |
| 856 | //addr.sapi = e1inp_ts->sign.sapi; |
| 857 | addr.sapi = 0; |
| 858 | addr.tei = GROUP_TEI; |
| 859 | } |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 860 | break; |
Harald Welte | 7a228eb | 2016-07-28 11:09:31 +0200 | [diff] [blame] | 861 | case E1INP_TS_TYPE_HDLC: |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 862 | case E1INP_TS_TYPE_RAW: |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 863 | case E1INP_TS_TYPE_TRAU: |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 864 | /* TS 16 is D-channel, so we use channel 0 */ |
| 865 | addr.channel = (ts == 16) ? 0 : ts; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 866 | break; |
| 867 | default: |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 868 | LOGPITS(e1i_ts, DLMI, LOGL_ERROR, "unsupported E1 TS type: %u\n", e1i_ts->type); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 869 | break; |
| 870 | } |
| 871 | |
| 872 | ret = bind(bfd->fd, (struct sockaddr *) &addr, sizeof(addr)); |
| 873 | if (ret < 0) { |
| 874 | fprintf(stderr, "could not bind l2 socket %s\n", |
| 875 | strerror(errno)); |
| 876 | return -EIO; |
| 877 | } |
| 878 | |
| 879 | if (e1i_ts->type == E1INP_TS_TYPE_SIGN) { |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 880 | if (!mline->use_userspace_lapd) { |
| 881 | ret = ioctl(bfd->fd, IMCLEAR_L2, &release_l2); |
| 882 | if (ret < 0) { |
| 883 | fprintf(stderr, "could not send IOCTL IMCLEAN_L2 %s\n", strerror(errno)); |
| 884 | return -EIO; |
| 885 | } |
| 886 | } else |
| 887 | activate_bchan(line, ts, 1); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 888 | } |
| 889 | |
| 890 | /* FIXME: only activate B-Channels once we start to |
| 891 | * use them to conserve CPU power */ |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 892 | if (e1i_ts->type == E1INP_TS_TYPE_HDLC |
| 893 | || e1i_ts->type == E1INP_TS_TYPE_RAW |
| 894 | || e1i_ts->type == E1INP_TS_TYPE_TRAU) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 895 | activate_bchan(line, ts, 1); |
| 896 | |
Harald Welte | 6e831b7 | 2020-10-18 22:59:58 +0200 | [diff] [blame] | 897 | osmo_fd_setup(bfd, bfd->fd, bfd->when, misdn_fd_cb, line, ts); |
| 898 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 899 | ret = osmo_fd_register(bfd); |
| 900 | if (ret < 0) { |
| 901 | fprintf(stderr, "could not register FD: %s\n", |
Harald Welte | 519217f | 2016-11-26 09:43:46 +0100 | [diff] [blame] | 902 | strerror(-ret)); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 903 | return ret; |
| 904 | } |
| 905 | } |
| 906 | |
| 907 | return 0; |
| 908 | } |
| 909 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 910 | static int _mi_e1_line_update(struct e1inp_line *line) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 911 | { |
| 912 | struct mISDN_devinfo devinfo; |
| 913 | int sk, ret, cnt; |
| 914 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 915 | if (line->driver != &misdn_driver && |
| 916 | line->driver != &misdn_lapd_driver) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 917 | return -EINVAL; |
| 918 | |
| 919 | /* open the ISDN card device */ |
| 920 | sk = socket(PF_ISDN, SOCK_RAW, ISDN_P_BASE); |
| 921 | if (sk < 0) { |
| 922 | fprintf(stderr, "%s could not open socket %s\n", |
| 923 | __func__, strerror(errno)); |
| 924 | return sk; |
| 925 | } |
| 926 | |
| 927 | ret = ioctl(sk, IMGETCOUNT, &cnt); |
| 928 | if (ret) { |
| 929 | fprintf(stderr, "%s error getting interf count: %s\n", |
| 930 | __func__, strerror(errno)); |
| 931 | close(sk); |
| 932 | return -ENODEV; |
| 933 | } |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 934 | //LOGPIL(line, DLMI, LOGL_DEBUG, "%d device%s found\n", cnt, (cnt==1)?"":"s"); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 935 | printf("%d device%s found\n", cnt, (cnt==1)?"":"s"); |
| 936 | #if 1 |
Andreas Eversberg | d2b951f | 2022-12-04 13:12:33 +0100 | [diff] [blame] | 937 | memset(&devinfo, 0, sizeof(devinfo)); |
Harald Welte | c288951 | 2011-09-13 23:49:04 +0100 | [diff] [blame] | 938 | devinfo.id = line->port_nr; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 939 | ret = ioctl(sk, IMGETDEVINFO, &devinfo); |
| 940 | if (ret < 0) { |
| 941 | fprintf(stdout, "error getting info for device %d: %s\n", |
Harald Welte | c288951 | 2011-09-13 23:49:04 +0100 | [diff] [blame] | 942 | line->port_nr, strerror(errno)); |
Holger Hans Peter Freyther | adfa01f | 2014-12-26 18:13:55 +0100 | [diff] [blame] | 943 | close(sk); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 944 | return -ENODEV; |
| 945 | } |
| 946 | fprintf(stdout, " id: %d\n", devinfo.id); |
| 947 | fprintf(stdout, " Dprotocols: %08x\n", devinfo.Dprotocols); |
| 948 | fprintf(stdout, " Bprotocols: %08x\n", devinfo.Bprotocols); |
| 949 | fprintf(stdout, " protocol: %d\n", devinfo.protocol); |
| 950 | fprintf(stdout, " nrbchan: %d\n", devinfo.nrbchan); |
| 951 | fprintf(stdout, " name: %s\n", devinfo.name); |
| 952 | #endif |
Holger Hans Peter Freyther | 219a6a4 | 2013-07-06 18:49:59 +0200 | [diff] [blame] | 953 | close(sk); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 954 | |
| 955 | if (!(devinfo.Dprotocols & (1 << ISDN_P_NT_E1))) { |
| 956 | fprintf(stderr, "error: card is not of type E1 (NT-mode)\n"); |
| 957 | return -EINVAL; |
| 958 | } |
| 959 | |
| 960 | ret = mi_e1_setup(line, 1); |
| 961 | if (ret) |
| 962 | return ret; |
| 963 | |
| 964 | return 0; |
| 965 | } |
| 966 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 967 | static int mi_e1_line_update(struct e1inp_line *line) |
| 968 | { |
| 969 | struct misdn_line *ml; |
| 970 | |
| 971 | if (!line->driver_data) |
| 972 | line->driver_data = talloc_zero(line, struct misdn_line); |
| 973 | |
| 974 | ml = line->driver_data; |
| 975 | ml->use_userspace_lapd = 0; |
| 976 | |
| 977 | return _mi_e1_line_update(line); |
| 978 | } |
| 979 | |
| 980 | static int mi_e1_line_update_lapd(struct e1inp_line *line) |
| 981 | { |
| 982 | struct misdn_line *ml; |
| 983 | |
| 984 | if (!line->driver_data) |
| 985 | line->driver_data = talloc_zero(line, struct misdn_line); |
| 986 | |
| 987 | ml = line->driver_data; |
| 988 | ml->use_userspace_lapd = 1; |
| 989 | |
| 990 | return _mi_e1_line_update(line); |
| 991 | } |
| 992 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 993 | void e1inp_misdn_init(void) |
| 994 | { |
| 995 | /* register the driver with the core */ |
| 996 | e1inp_driver_register(&misdn_driver); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 997 | e1inp_driver_register(&misdn_lapd_driver); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 998 | } |