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> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 66 | |
| 67 | #define TS1_ALLOC_SIZE 300 |
| 68 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 69 | /*! \brief driver-specific data for \ref e1inp_line::driver_data */ |
| 70 | struct misdn_line { |
| 71 | int use_userspace_lapd; |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 72 | int unconfirmed_ts[NUM_E1_TS]; |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 73 | int dummy_dchannel; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 74 | }; |
| 75 | |
Harald Welte | 6341aa0 | 2011-08-21 00:55:23 +0200 | [diff] [blame] | 76 | const struct value_string prim_names[] = { |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 77 | { PH_CONTROL_IND, "PH_CONTROL_IND" }, |
| 78 | { PH_DATA_IND, "PH_DATA_IND" }, |
| 79 | { PH_DATA_CNF, "PH_DATA_CNF" }, |
| 80 | { PH_ACTIVATE_IND, "PH_ACTIVATE_IND" }, |
| 81 | { DL_ESTABLISH_IND, "DL_ESTABLISH_IND" }, |
| 82 | { DL_ESTABLISH_CNF, "DL_ESTABLISH_CNF" }, |
| 83 | { DL_RELEASE_IND, "DL_RELEASE_IND" }, |
| 84 | { DL_RELEASE_CNF, "DL_RELEASE_CNF" }, |
| 85 | { DL_DATA_IND, "DL_DATA_IND" }, |
| 86 | { DL_UNITDATA_IND, "DL_UNITDATA_IND" }, |
| 87 | { DL_INFORMATION_IND, "DL_INFORMATION_IND" }, |
| 88 | { MPH_ACTIVATE_IND, "MPH_ACTIVATE_IND" }, |
| 89 | { MPH_DEACTIVATE_IND, "MPH_DEACTIVATE_IND" }, |
Harald Welte | 6341aa0 | 2011-08-21 00:55:23 +0200 | [diff] [blame] | 90 | { 0, NULL } |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 91 | }; |
| 92 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 93 | static int handle_ts1_read(struct osmo_fd *bfd) |
| 94 | { |
| 95 | struct e1inp_line *line = bfd->data; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 96 | struct misdn_line *mline = line->driver_data; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 97 | unsigned int ts_nr = bfd->priv_nr; |
| 98 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 99 | struct e1inp_sign_link *link; |
| 100 | struct msgb *msg = msgb_alloc(TS1_ALLOC_SIZE, "mISDN TS1"); |
| 101 | struct sockaddr_mISDN l2addr; |
| 102 | struct mISDNhead *hh; |
| 103 | socklen_t alen; |
| 104 | int ret; |
| 105 | |
| 106 | if (!msg) |
| 107 | return -ENOMEM; |
| 108 | |
| 109 | hh = (struct mISDNhead *) msg->data; |
| 110 | |
| 111 | alen = sizeof(l2addr); |
| 112 | ret = recvfrom(bfd->fd, msg->data, 300, 0, |
| 113 | (struct sockaddr *) &l2addr, &alen); |
| 114 | if (ret < 0) { |
| 115 | fprintf(stderr, "recvfrom error %s\n", strerror(errno)); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 116 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 117 | return ret; |
| 118 | } |
| 119 | |
| 120 | if (alen != sizeof(l2addr)) { |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 121 | fprintf(stderr, "%s error len\n", __func__); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 122 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 123 | return -EINVAL; |
| 124 | } |
| 125 | |
| 126 | msgb_put(msg, ret); |
| 127 | |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 128 | 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] | 129 | alen, l2addr.dev, l2addr.channel, l2addr.sapi, l2addr.tei); |
| 130 | |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 131 | 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] | 132 | 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] | 133 | |
| 134 | switch (hh->prim) { |
| 135 | case DL_INFORMATION_IND: |
| 136 | /* mISDN tells us which channel number is allocated for this |
| 137 | * tuple of (SAPI, TEI). */ |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 138 | 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] | 139 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 140 | link = e1inp_lookup_sign_link(e1i_ts, l2addr.tei, l2addr.sapi); |
| 141 | if (!link) { |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 142 | 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] | 143 | msgb_free(msg); |
| 144 | return -EINVAL; |
| 145 | } |
| 146 | /* save the channel number in the driver private struct */ |
| 147 | link->driver.misdn.channel = l2addr.channel; |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 148 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 149 | break; |
| 150 | case DL_ESTABLISH_IND: |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 151 | 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] | 152 | l2addr.channel, l2addr.sapi, l2addr.tei); |
| 153 | /* For some strange reason, sometimes the DL_INFORMATION_IND tells |
| 154 | * us the wrong channel, and we only get the real channel number |
| 155 | * during the DL_ESTABLISH_IND */ |
| 156 | link = e1inp_lookup_sign_link(e1i_ts, l2addr.tei, l2addr.sapi); |
| 157 | if (!link) { |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 158 | 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] | 159 | msgb_free(msg); |
| 160 | return -EINVAL; |
| 161 | } |
| 162 | /* save the channel number in the driver private struct */ |
| 163 | link->driver.misdn.channel = l2addr.channel; |
Pablo Neira Ayuso | de66891 | 2011-08-16 17:26:23 +0200 | [diff] [blame] | 164 | 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] | 165 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 166 | break; |
| 167 | case DL_RELEASE_IND: |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 168 | 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] | 169 | l2addr.channel, l2addr.sapi, l2addr.tei); |
Pablo Neira Ayuso | de66891 | 2011-08-16 17:26:23 +0200 | [diff] [blame] | 170 | 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] | 171 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 172 | break; |
| 173 | case DL_DATA_IND: |
| 174 | case DL_UNITDATA_IND: |
| 175 | msg->l2h = msg->data + MISDN_HEADER_LEN; |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 176 | 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] | 177 | if (mline->use_userspace_lapd) { |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 178 | 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] | 179 | msgb_free(msg); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 180 | return -EIO; |
| 181 | } |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 182 | ret = e1inp_rx_ts(e1i_ts, msg, l2addr.tei, l2addr.sapi); |
| 183 | break; |
| 184 | case PH_ACTIVATE_IND: |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 185 | 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] | 186 | l2addr.channel, l2addr.sapi, l2addr.tei); |
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 | break; |
| 189 | case PH_DEACTIVATE_IND: |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 190 | 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] | 191 | l2addr.channel, l2addr.sapi, l2addr.tei); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 192 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 193 | break; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 194 | case PH_DATA_IND: |
| 195 | if (!mline->use_userspace_lapd) { |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 196 | 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] | 197 | return -EIO; |
| 198 | } |
| 199 | /* remove the Misdn Header */ |
| 200 | msgb_pull(msg, MISDN_HEADER_LEN); |
| 201 | /* hand into the LAPD code */ |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 202 | 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] | 203 | ret = e1inp_rx_ts_lapd(e1i_ts, msg); |
| 204 | break; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 205 | default: |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 206 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 207 | break; |
| 208 | } |
| 209 | return ret; |
| 210 | } |
| 211 | |
| 212 | static int ts_want_write(struct e1inp_ts *e1i_ts) |
| 213 | { |
| 214 | /* We never include the mISDN B-Channel FD into the |
| 215 | * writeset, since it doesn't support poll() based |
| 216 | * write flow control */ |
Harald Welte | b3952c6 | 2020-06-20 22:07:36 +0200 | [diff] [blame] | 217 | if (e1i_ts->type == E1INP_TS_TYPE_TRAU || |
| 218 | e1i_ts->type == E1INP_TS_TYPE_I460) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 219 | return 0; |
| 220 | |
Harald Welte | 949b8a2 | 2020-10-18 23:01:53 +0200 | [diff] [blame] | 221 | osmo_fd_write_enable(&e1i_ts->driver.misdn.fd); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 222 | |
| 223 | return 0; |
| 224 | } |
| 225 | |
| 226 | static void timeout_ts1_write(void *data) |
| 227 | { |
| 228 | struct e1inp_ts *e1i_ts = (struct e1inp_ts *)data; |
| 229 | |
| 230 | /* trigger write of ts1, due to tx delay timer */ |
| 231 | ts_want_write(e1i_ts); |
| 232 | } |
| 233 | |
| 234 | static int handle_ts1_write(struct osmo_fd *bfd) |
| 235 | { |
| 236 | struct e1inp_line *line = bfd->data; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 237 | struct misdn_line *mline = line->driver_data; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 238 | unsigned int ts_nr = bfd->priv_nr; |
| 239 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 240 | struct e1inp_sign_link *sign_link; |
| 241 | struct sockaddr_mISDN sa; |
| 242 | struct msgb *msg; |
| 243 | struct mISDNhead *hh; |
| 244 | uint8_t *l2_data; |
| 245 | int ret; |
| 246 | |
Harald Welte | 949b8a2 | 2020-10-18 23:01:53 +0200 | [diff] [blame] | 247 | osmo_fd_write_disable(bfd); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 248 | |
| 249 | /* get the next msg for this timeslot */ |
| 250 | msg = e1inp_tx_ts(e1i_ts, &sign_link); |
| 251 | if (!msg) { |
| 252 | /* no message after tx delay timer */ |
| 253 | return 0; |
| 254 | } |
| 255 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 256 | if (mline->use_userspace_lapd) { |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 257 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "TX %u/%u/%u: %s\n", line->num, sign_link->tei, |
| 258 | sign_link->sapi, osmo_hexdump(msg->data, msg->len)); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 259 | lapd_transmit(e1i_ts->lapd, sign_link->tei, |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 260 | sign_link->sapi, msg); |
Holger Hans Peter Freyther | 5731dd7 | 2013-03-09 17:35:17 +0100 | [diff] [blame] | 261 | ret = 0; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 262 | } else { |
| 263 | l2_data = msg->data; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 264 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 265 | /* prepend the mISDNhead */ |
| 266 | hh = (struct mISDNhead *) msgb_push(msg, sizeof(*hh)); |
| 267 | hh->prim = DL_DATA_REQ; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 268 | |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 269 | 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] | 270 | sign_link->driver.misdn.channel, sign_link->tei, |
| 271 | 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] | 272 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 273 | /* construct the sockaddr */ |
| 274 | sa.family = AF_ISDN; |
| 275 | sa.sapi = sign_link->sapi; |
| 276 | sa.dev = sign_link->tei; |
| 277 | sa.channel = sign_link->driver.misdn.channel; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 278 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 279 | ret = sendto(bfd->fd, msg->data, msg->len, 0, |
| 280 | (struct sockaddr *)&sa, sizeof(sa)); |
| 281 | if (ret < 0) |
| 282 | fprintf(stderr, "%s sendto failed %d\n", __func__, ret); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 283 | |
| 284 | msgb_free(msg); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 285 | } |
| 286 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 287 | |
| 288 | /* set tx delay timer for next event */ |
Pablo Neira Ayuso | b26f2fd | 2017-06-07 18:32:13 +0200 | [diff] [blame] | 289 | 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] | 290 | osmo_timer_schedule(&e1i_ts->sign.tx_timer, 0, e1i_ts->sign.delay); |
| 291 | |
| 292 | return ret; |
| 293 | } |
| 294 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 295 | /*! \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] | 296 | static void misdn_write_msg(struct msgb *msg, void *cbdata) |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 297 | { |
| 298 | struct osmo_fd *bfd = cbdata; |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 299 | struct e1inp_line *line = bfd->data; |
| 300 | unsigned int ts_nr = bfd->priv_nr; |
| 301 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 302 | struct mISDNhead *hh; |
| 303 | int ret; |
| 304 | |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 305 | 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] | 306 | osmo_hexdump(msg->data, msg->len)); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 307 | |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 308 | hh = (struct mISDNhead *) msgb_push(msg, MISDN_HEADER_LEN); |
| 309 | hh->prim = PH_DATA_REQ; |
| 310 | hh->id = 0; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 311 | |
| 312 | ret = write(bfd->fd, msg->data, msg->len); |
| 313 | if (ret < 0) |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 314 | LOGPITS(e1i_ts, DLMI, LOGL_NOTICE, "write failed %d\n", ret); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 315 | |
| 316 | msgb_free(msg); |
| 317 | } |
| 318 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 319 | /* write to a B channel TS */ |
Andreas Eversberg | d73c846 | 2011-12-20 18:56:42 +0100 | [diff] [blame] | 320 | static int handle_tsX_write(struct osmo_fd *bfd, int len) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 321 | { |
| 322 | struct e1inp_line *line = bfd->data; |
| 323 | unsigned int ts_nr = bfd->priv_nr; |
| 324 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 325 | struct mISDNhead *hh; |
Andreas Eversberg | d73c846 | 2011-12-20 18:56:42 +0100 | [diff] [blame] | 326 | uint8_t tx_buf[len + sizeof(*hh)]; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 327 | struct subch_mux *mx = &e1i_ts->trau.mux; |
| 328 | int ret; |
| 329 | |
| 330 | hh = (struct mISDNhead *) tx_buf; |
| 331 | hh->prim = PH_DATA_REQ; |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 332 | hh->id = 0; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 333 | |
Andreas Eversberg | d73c846 | 2011-12-20 18:56:42 +0100 | [diff] [blame] | 334 | subchan_mux_out(mx, tx_buf+sizeof(*hh), len); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 335 | |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 336 | 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] | 337 | |
Andreas Eversberg | d73c846 | 2011-12-20 18:56:42 +0100 | [diff] [blame] | 338 | ret = send(bfd->fd, tx_buf, sizeof(*hh) + len, 0); |
| 339 | if (ret < sizeof(*hh) + len) |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 340 | 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] | 341 | |
| 342 | return ret; |
| 343 | } |
| 344 | |
| 345 | #define TSX_ALLOC_SIZE 4096 |
| 346 | /* FIXME: read from a B channel TS */ |
| 347 | static int handle_tsX_read(struct osmo_fd *bfd) |
| 348 | { |
| 349 | struct e1inp_line *line = bfd->data; |
| 350 | unsigned int ts_nr = bfd->priv_nr; |
| 351 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 352 | struct msgb *msg = msgb_alloc(TSX_ALLOC_SIZE, "mISDN TSx"); |
| 353 | struct mISDNhead *hh; |
| 354 | int ret; |
| 355 | |
| 356 | if (!msg) |
| 357 | return -ENOMEM; |
| 358 | |
| 359 | hh = (struct mISDNhead *) msg->data; |
| 360 | |
| 361 | ret = recv(bfd->fd, msg->data, TSX_ALLOC_SIZE, 0); |
| 362 | if (ret < 0) { |
| 363 | fprintf(stderr, "recvfrom error %s\n", strerror(errno)); |
| 364 | return ret; |
| 365 | } |
| 366 | |
| 367 | msgb_put(msg, ret); |
| 368 | |
| 369 | if (hh->prim != PH_CONTROL_IND) |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 370 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "<= BCHAN len = %d, prim(0x%x) id(0x%x): %s\n", |
| 371 | 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] | 372 | |
| 373 | switch (hh->prim) { |
| 374 | case PH_DATA_IND: |
Andreas Eversberg | 32a2087 | 2022-12-04 13:12:09 +0100 | [diff] [blame^] | 375 | /* remove the Misdn Header */ |
| 376 | msg->l2h = msgb_pull(msg, MISDN_HEADER_LEN); |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 377 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "BCHAN RX: %s\n", |
Andreas Eversberg | 32a2087 | 2022-12-04 13:12:09 +0100 | [diff] [blame^] | 378 | osmo_hexdump(msgb_l2(msg), msgb_l2len(msg))); |
Andreas Eversberg | d73c846 | 2011-12-20 18:56:42 +0100 | [diff] [blame] | 379 | /* the number of bytes received indicates that data to send */ |
| 380 | handle_tsX_write(bfd, msgb_l2len(msg)); |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 381 | return e1inp_rx_ts(e1i_ts, msg, 0, 0); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 382 | case PH_ACTIVATE_IND: |
| 383 | case PH_DATA_CNF: |
Andreas Eversberg | d73c846 | 2011-12-20 18:56:42 +0100 | [diff] [blame] | 384 | break; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 385 | default: |
| 386 | break; |
| 387 | } |
| 388 | /* FIXME: why do we free signalling msgs in the caller, and trau not? */ |
| 389 | msgb_free(msg); |
| 390 | |
| 391 | return ret; |
| 392 | } |
| 393 | |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 394 | /* write to a raw channel TS */ |
| 395 | static int handle_ts_raw_write(struct osmo_fd *bfd, unsigned int len) |
| 396 | { |
| 397 | struct e1inp_line *line = bfd->data; |
| 398 | unsigned int ts_nr = bfd->priv_nr; |
| 399 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 400 | struct msgb *msg; |
| 401 | struct mISDNhead *hh; |
| 402 | int ret; |
| 403 | |
| 404 | /* get the next msg for this timeslot */ |
| 405 | msg = e1inp_tx_ts(e1i_ts, NULL); |
| 406 | if (!msg) |
| 407 | return 0; |
| 408 | |
| 409 | if (msg->len != len) { |
| 410 | /* This might lead to a transmit underrun, as we call tx |
| 411 | * from the rx path, as there's no select/poll on dahdi |
| 412 | * */ |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 413 | LOGPITS(e1i_ts, DLINP, LOGL_NOTICE, "unexpected msg->len = %u, expected %u\n", msg->len, len); |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 414 | } |
| 415 | |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 416 | 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] | 417 | |
| 418 | hh = (struct mISDNhead *) msgb_push(msg, sizeof(*hh)); |
| 419 | hh->prim = PH_DATA_REQ; |
| 420 | hh->id = 0; |
| 421 | |
| 422 | ret = write(bfd->fd, msg->data, msg->len); |
| 423 | if (ret < msg->len) |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 424 | LOGPITS(e1i_ts, DLINP, LOGL_DEBUG, "send returns %d instead of %d\n", ret, msg->len); |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 425 | msgb_free(msg); |
| 426 | |
| 427 | return ret; |
| 428 | } |
| 429 | |
| 430 | static int handle_ts_raw_read(struct osmo_fd *bfd) |
| 431 | { |
| 432 | struct e1inp_line *line = bfd->data; |
| 433 | unsigned int ts_nr = bfd->priv_nr; |
| 434 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 435 | struct msgb *msg = msgb_alloc(TSX_ALLOC_SIZE, "mISDN TS RAW"); |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 436 | struct mISDNhead *hh; |
| 437 | int ret; |
| 438 | |
| 439 | if (!msg) |
| 440 | return -ENOMEM; |
| 441 | |
| 442 | hh = (struct mISDNhead *) msg->data; |
| 443 | |
| 444 | ret = recv(bfd->fd, msg->data, TSX_ALLOC_SIZE, 0); |
| 445 | if (ret < 0) { |
| 446 | fprintf(stderr, "recvfrom error %s\n", strerror(errno)); |
| 447 | return ret; |
| 448 | } |
| 449 | |
| 450 | msgb_put(msg, ret); |
| 451 | |
| 452 | if (hh->prim != PH_CONTROL_IND) |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 453 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "<= RAW CHAN len = %d, prim(0x%x) id(0x%x): %s\n", |
| 454 | ret, hh->prim, hh->id, get_value_string(prim_names, hh->prim)); |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 455 | |
| 456 | switch (hh->prim) { |
| 457 | case PH_DATA_IND: |
Andreas Eversberg | 32a2087 | 2022-12-04 13:12:09 +0100 | [diff] [blame^] | 458 | /* remove the Misdn Header */ |
| 459 | msg->l2h = msgb_pull(msg, MISDN_HEADER_LEN); |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 460 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "RAW CHAN RX: %s\n", |
Andreas Eversberg | 32a2087 | 2022-12-04 13:12:09 +0100 | [diff] [blame^] | 461 | osmo_hexdump(msgb_l2(msg), msgb_l2len(msg))); |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 462 | /* the number of bytes received indicates that data to send */ |
| 463 | handle_ts_raw_write(bfd, msgb_l2len(msg)); |
| 464 | return e1inp_rx_ts(e1i_ts, msg, 0, 0); |
| 465 | case PH_ACTIVATE_IND: |
| 466 | case PH_DATA_CNF: |
| 467 | break; |
| 468 | default: |
| 469 | break; |
| 470 | } |
| 471 | /* FIXME: why do we free signalling msgs in the caller, and trau not? */ |
| 472 | msgb_free(msg); |
| 473 | |
| 474 | return ret; |
| 475 | } |
| 476 | |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 477 | /* write to a hdlc channel TS */ |
| 478 | static int handle_ts_hdlc_write(struct osmo_fd *bfd) |
| 479 | { |
| 480 | struct e1inp_line *line = bfd->data; |
| 481 | struct misdn_line *mline = line->driver_data; |
| 482 | unsigned int ts_nr = bfd->priv_nr; |
| 483 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 484 | struct msgb *msg; |
| 485 | struct mISDNhead *hh; |
| 486 | int ret; |
| 487 | |
| 488 | osmo_fd_write_disable(bfd); |
| 489 | |
| 490 | if (mline->unconfirmed_ts[ts_nr-1]) |
| 491 | return 0; |
| 492 | |
| 493 | /* get the next msg for this timeslot */ |
| 494 | msg = e1inp_tx_ts(e1i_ts, NULL); |
| 495 | if (!msg) |
| 496 | return 0; |
| 497 | |
| 498 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "HDLC CHAN TX: %s\n", osmo_hexdump(msg->data, msg->len)); |
| 499 | |
| 500 | hh = (struct mISDNhead *) msgb_push(msg, sizeof(*hh)); |
| 501 | hh->prim = PH_DATA_REQ; |
| 502 | hh->id = 0; |
| 503 | |
| 504 | ret = write(bfd->fd, msg->data, msg->len); |
| 505 | if (ret < msg->len) |
| 506 | LOGPITS(e1i_ts, DLINP, LOGL_NOTICE, "send returns %d instead of %d\n", ret, msg->len); |
| 507 | else |
| 508 | mline->unconfirmed_ts[ts_nr-1] = 1; |
| 509 | msgb_free(msg); |
| 510 | |
| 511 | |
| 512 | return ret; |
| 513 | } |
| 514 | |
| 515 | static int handle_ts_hdlc_read(struct osmo_fd *bfd) |
| 516 | { |
| 517 | struct e1inp_line *line = bfd->data; |
| 518 | struct misdn_line *mline = line->driver_data; |
| 519 | unsigned int ts_nr = bfd->priv_nr; |
| 520 | struct e1inp_ts *e1i_ts = &line->ts[ts_nr-1]; |
| 521 | struct msgb *msg = msgb_alloc(TSX_ALLOC_SIZE, "mISDN TS HDLC"); |
| 522 | struct mISDNhead *hh; |
| 523 | int ret; |
| 524 | |
| 525 | if (!msg) |
| 526 | return -ENOMEM; |
| 527 | |
| 528 | hh = (struct mISDNhead *) msg->data; |
| 529 | |
| 530 | ret = recv(bfd->fd, msg->data, TSX_ALLOC_SIZE, 0); |
| 531 | if (ret < 0) { |
| 532 | fprintf(stderr, "recvfrom error %s\n", strerror(errno)); |
| 533 | return ret; |
| 534 | } |
| 535 | |
| 536 | msgb_put(msg, ret); |
| 537 | |
| 538 | if (hh->prim != PH_CONTROL_IND) |
| 539 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "<= HDLC CHAN len = %d, prim(0x%x) id(0x%x): %s\n", |
| 540 | ret, hh->prim, hh->id, get_value_string(prim_names, hh->prim)); |
| 541 | |
| 542 | switch (hh->prim) { |
| 543 | case PH_DATA_IND: |
Andreas Eversberg | 32a2087 | 2022-12-04 13:12:09 +0100 | [diff] [blame^] | 544 | /* remove the Misdn Header */ |
| 545 | msgb_pull(msg, MISDN_HEADER_LEN); |
| 546 | msg->l2h = msg->data; |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 547 | LOGPITS(e1i_ts, DLMIB, LOGL_DEBUG, "HDLC CHAN RX: %s\n", |
Andreas Eversberg | 32a2087 | 2022-12-04 13:12:09 +0100 | [diff] [blame^] | 548 | osmo_hexdump(msgb_l2(msg), msgb_l2len(msg))); |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 549 | return e1inp_rx_ts(e1i_ts, msg, 0, 0); |
| 550 | case PH_ACTIVATE_IND: |
| 551 | break; |
| 552 | case PH_DATA_CNF: |
| 553 | mline->unconfirmed_ts[ts_nr-1] = 0; |
| 554 | osmo_fd_write_enable(bfd); |
| 555 | break; |
| 556 | default: |
| 557 | break; |
| 558 | } |
| 559 | /* FIXME: why do we free signalling msgs in the caller, and trau not? */ |
| 560 | msgb_free(msg); |
| 561 | |
| 562 | return ret; |
| 563 | } |
| 564 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 565 | /* callback from select.c in case one of the fd's can be read/written */ |
| 566 | static int misdn_fd_cb(struct osmo_fd *bfd, unsigned int what) |
| 567 | { |
| 568 | struct e1inp_line *line = bfd->data; |
| 569 | unsigned int ts_nr = bfd->priv_nr; |
| 570 | unsigned int idx = ts_nr-1; |
| 571 | struct e1inp_ts *e1i_ts = &line->ts[idx]; |
| 572 | int rc = 0; |
| 573 | |
| 574 | switch (e1i_ts->type) { |
| 575 | case E1INP_TS_TYPE_SIGN: |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 576 | if (what & OSMO_FD_READ) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 577 | rc = handle_ts1_read(bfd); |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 578 | if (what & OSMO_FD_WRITE) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 579 | rc = handle_ts1_write(bfd); |
| 580 | break; |
| 581 | case E1INP_TS_TYPE_TRAU: |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 582 | if (what & OSMO_FD_READ) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 583 | rc = handle_tsX_read(bfd); |
| 584 | /* We never include the mISDN B-Channel FD into the |
| 585 | * writeset, since it doesn't support poll() based |
| 586 | * write flow control */ |
| 587 | break; |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 588 | case E1INP_TS_TYPE_RAW: |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 589 | if (what & OSMO_FD_READ) |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 590 | rc = handle_ts_raw_read(bfd); |
| 591 | /* We never include the mISDN B-Channel FD into the |
| 592 | * writeset, since it doesn't support poll() based |
| 593 | * write flow control */ |
| 594 | break; |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 595 | case E1INP_TS_TYPE_HDLC: |
| 596 | if (what & OSMO_FD_READ) |
| 597 | rc = handle_ts_hdlc_read(bfd); |
| 598 | if (what & OSMO_FD_WRITE) |
| 599 | rc = handle_ts_hdlc_write(bfd); |
| 600 | break; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 601 | default: |
| 602 | fprintf(stderr, "unknown E1 TS type %u\n", e1i_ts->type); |
| 603 | break; |
| 604 | } |
| 605 | |
| 606 | return rc; |
| 607 | } |
| 608 | |
| 609 | static int activate_bchan(struct e1inp_line *line, int ts, int act) |
| 610 | { |
| 611 | struct mISDNhead hh; |
| 612 | int ret; |
| 613 | unsigned int idx = ts-1; |
| 614 | struct e1inp_ts *e1i_ts = &line->ts[idx]; |
| 615 | struct osmo_fd *bfd = &e1i_ts->driver.misdn.fd; |
| 616 | |
| 617 | fprintf(stdout, "activate bchan\n"); |
| 618 | if (act) |
| 619 | hh.prim = PH_ACTIVATE_REQ; |
| 620 | else |
| 621 | hh.prim = PH_DEACTIVATE_REQ; |
| 622 | |
| 623 | hh.id = MISDN_ID_ANY; |
| 624 | ret = sendto(bfd->fd, &hh, sizeof(hh), 0, NULL, 0); |
| 625 | if (ret < 0) { |
| 626 | fprintf(stdout, "could not send ACTIVATE_RQ %s\n", |
| 627 | strerror(errno)); |
| 628 | } |
| 629 | |
| 630 | return ret; |
| 631 | } |
| 632 | |
Pablo Neira Ayuso | 4e862cb | 2011-08-19 18:43:38 +0200 | [diff] [blame] | 633 | static int mi_e1_line_update(struct e1inp_line *line); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 634 | static int mi_e1_line_update_lapd(struct e1inp_line *line); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 635 | |
| 636 | struct e1inp_driver misdn_driver = { |
| 637 | .name = "misdn", |
| 638 | .want_write = ts_want_write, |
| 639 | .default_delay = 50000, |
| 640 | .line_update = &mi_e1_line_update, |
| 641 | }; |
| 642 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 643 | struct e1inp_driver misdn_lapd_driver = { |
| 644 | .name = "misdn_lapd", |
| 645 | .want_write = ts_want_write, |
| 646 | .default_delay = 50000, |
| 647 | .line_update = &mi_e1_line_update_lapd, |
| 648 | }; |
| 649 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 650 | static int mi_e1_setup(struct e1inp_line *line, int release_l2) |
| 651 | { |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 652 | struct misdn_line *mline = line->driver_data; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 653 | int ts, ret; |
| 654 | |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 655 | mline->dummy_dchannel = -1; |
| 656 | if (mline->use_userspace_lapd) { |
| 657 | /* Open dummy d-channel in order to use b-channels. |
| 658 | * Also it is required to define the mode. |
| 659 | */ |
| 660 | if (mline->dummy_dchannel < 0) { |
| 661 | struct sockaddr_mISDN addr; |
| 662 | |
| 663 | mline->dummy_dchannel = socket(PF_ISDN, SOCK_DGRAM, |
| 664 | ISDN_P_NT_E1); |
| 665 | if (mline->dummy_dchannel < 0) { |
| 666 | fprintf(stderr, "%s could not open socket %s\n", |
| 667 | __func__, strerror(errno)); |
| 668 | return mline->dummy_dchannel; |
| 669 | } |
| 670 | memset(&addr, 0, sizeof(addr)); |
| 671 | addr.family = AF_ISDN; |
Andreas Eversberg | 4308667 | 2012-01-18 19:06:12 +0100 | [diff] [blame] | 672 | addr.dev = line->port_nr; |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 673 | addr.channel = 0; |
| 674 | addr.sapi = 0; |
| 675 | addr.tei = GROUP_TEI; |
| 676 | ret = bind(mline->dummy_dchannel, |
| 677 | (struct sockaddr *) &addr, sizeof(addr)); |
| 678 | if (ret < 0) { |
| 679 | fprintf(stderr, "could not bind l2 socket %s\n", |
| 680 | strerror(errno)); |
| 681 | return -EIO; |
| 682 | } |
| 683 | } |
| 684 | } |
| 685 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 686 | /* TS0 is CRC4, don't need any fd for it */ |
| 687 | for (ts = 1; ts < NUM_E1_TS; ts++) { |
| 688 | unsigned int idx = ts-1; |
| 689 | struct e1inp_ts *e1i_ts = &line->ts[idx]; |
| 690 | struct osmo_fd *bfd = &e1i_ts->driver.misdn.fd; |
| 691 | struct sockaddr_mISDN addr; |
| 692 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 693 | switch (e1i_ts->type) { |
| 694 | case E1INP_TS_TYPE_NONE: |
| 695 | continue; |
| 696 | break; |
Harald Welte | 7a228eb | 2016-07-28 11:09:31 +0200 | [diff] [blame] | 697 | case E1INP_TS_TYPE_HDLC: |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 698 | /* TS 16 is the D-channel, so we use D-channel proto */ |
Harald Welte | 7a228eb | 2016-07-28 11:09:31 +0200 | [diff] [blame] | 699 | bfd->fd = socket(PF_ISDN, SOCK_DGRAM, |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 700 | (ts == 16) ? ISDN_P_NT_E1 : ISDN_P_B_HDLC); |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 701 | bfd->when = OSMO_FD_READ; |
Harald Welte | 7a228eb | 2016-07-28 11:09:31 +0200 | [diff] [blame] | 702 | break; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 703 | case E1INP_TS_TYPE_SIGN: |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 704 | if (mline->use_userspace_lapd) |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 705 | bfd->fd = socket(PF_ISDN, SOCK_DGRAM, |
| 706 | ISDN_P_B_HDLC); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 707 | else |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 708 | bfd->fd = socket(PF_ISDN, SOCK_DGRAM, |
| 709 | ISDN_P_LAPD_NT); |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 710 | bfd->when = OSMO_FD_READ; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 711 | break; |
| 712 | case E1INP_TS_TYPE_TRAU: |
Harald Welte | b3952c6 | 2020-06-20 22:07:36 +0200 | [diff] [blame] | 713 | case E1INP_TS_TYPE_I460: |
Harald Welte | a0108e7 | 2016-07-27 21:44:50 +0200 | [diff] [blame] | 714 | case E1INP_TS_TYPE_RAW: |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 715 | bfd->fd = socket(PF_ISDN, SOCK_DGRAM, ISDN_P_B_RAW); |
| 716 | /* We never include the mISDN B-Channel FD into the |
| 717 | * writeset, since it doesn't support poll() based |
| 718 | * write flow control */ |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 719 | bfd->when = OSMO_FD_READ; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 720 | break; |
| 721 | } |
| 722 | |
| 723 | if (bfd->fd < 0) { |
| 724 | fprintf(stderr, "%s could not open socket %s\n", |
| 725 | __func__, strerror(errno)); |
| 726 | return bfd->fd; |
| 727 | } |
| 728 | |
| 729 | memset(&addr, 0, sizeof(addr)); |
| 730 | addr.family = AF_ISDN; |
Harald Welte | c288951 | 2011-09-13 23:49:04 +0100 | [diff] [blame] | 731 | addr.dev = line->port_nr; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 732 | switch (e1i_ts->type) { |
| 733 | case E1INP_TS_TYPE_SIGN: |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 734 | if (mline->use_userspace_lapd) { |
Harald Welte | b903188 | 2020-05-02 21:09:15 +0200 | [diff] [blame] | 735 | char name[32]; |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 736 | addr.channel = ts; |
Harald Welte | b903188 | 2020-05-02 21:09:15 +0200 | [diff] [blame] | 737 | e1inp_ts_name(name, sizeof(name), e1i_ts); |
| 738 | e1i_ts->lapd = lapd_instance_alloc2(1, |
Andreas Eversberg | a7ff001 | 2011-09-26 11:29:30 +0200 | [diff] [blame] | 739 | misdn_write_msg, bfd, e1inp_dlsap_up, |
Harald Welte | b903188 | 2020-05-02 21:09:15 +0200 | [diff] [blame] | 740 | e1i_ts, &lapd_profile_abis, name); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 741 | } else { |
| 742 | addr.channel = 0; |
| 743 | /* SAPI not supported yet in kernel */ |
| 744 | //addr.sapi = e1inp_ts->sign.sapi; |
| 745 | addr.sapi = 0; |
| 746 | addr.tei = GROUP_TEI; |
| 747 | } |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 748 | break; |
Harald Welte | 7a228eb | 2016-07-28 11:09:31 +0200 | [diff] [blame] | 749 | case E1INP_TS_TYPE_HDLC: |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 750 | case E1INP_TS_TYPE_RAW: |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 751 | case E1INP_TS_TYPE_TRAU: |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 752 | /* TS 16 is D-channel, so we use channel 0 */ |
| 753 | addr.channel = (ts == 16) ? 0 : ts; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 754 | break; |
| 755 | default: |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 756 | 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] | 757 | break; |
| 758 | } |
| 759 | |
| 760 | ret = bind(bfd->fd, (struct sockaddr *) &addr, sizeof(addr)); |
| 761 | if (ret < 0) { |
| 762 | fprintf(stderr, "could not bind l2 socket %s\n", |
| 763 | strerror(errno)); |
| 764 | return -EIO; |
| 765 | } |
| 766 | |
| 767 | if (e1i_ts->type == E1INP_TS_TYPE_SIGN) { |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 768 | if (!mline->use_userspace_lapd) { |
| 769 | ret = ioctl(bfd->fd, IMCLEAR_L2, &release_l2); |
| 770 | if (ret < 0) { |
| 771 | fprintf(stderr, "could not send IOCTL IMCLEAN_L2 %s\n", strerror(errno)); |
| 772 | return -EIO; |
| 773 | } |
| 774 | } else |
| 775 | activate_bchan(line, ts, 1); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 776 | } |
| 777 | |
| 778 | /* FIXME: only activate B-Channels once we start to |
| 779 | * use them to conserve CPU power */ |
Andreas Eversberg | 7f5b63e | 2022-12-04 13:10:27 +0100 | [diff] [blame] | 780 | if (e1i_ts->type == E1INP_TS_TYPE_HDLC |
| 781 | || e1i_ts->type == E1INP_TS_TYPE_RAW |
| 782 | || e1i_ts->type == E1INP_TS_TYPE_TRAU) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 783 | activate_bchan(line, ts, 1); |
| 784 | |
Harald Welte | 6e831b7 | 2020-10-18 22:59:58 +0200 | [diff] [blame] | 785 | osmo_fd_setup(bfd, bfd->fd, bfd->when, misdn_fd_cb, line, ts); |
| 786 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 787 | ret = osmo_fd_register(bfd); |
| 788 | if (ret < 0) { |
| 789 | fprintf(stderr, "could not register FD: %s\n", |
Harald Welte | 519217f | 2016-11-26 09:43:46 +0100 | [diff] [blame] | 790 | strerror(-ret)); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 791 | return ret; |
| 792 | } |
| 793 | } |
| 794 | |
| 795 | return 0; |
| 796 | } |
| 797 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 798 | static int _mi_e1_line_update(struct e1inp_line *line) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 799 | { |
| 800 | struct mISDN_devinfo devinfo; |
| 801 | int sk, ret, cnt; |
| 802 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 803 | if (line->driver != &misdn_driver && |
| 804 | line->driver != &misdn_lapd_driver) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 805 | return -EINVAL; |
| 806 | |
| 807 | /* open the ISDN card device */ |
| 808 | sk = socket(PF_ISDN, SOCK_RAW, ISDN_P_BASE); |
| 809 | if (sk < 0) { |
| 810 | fprintf(stderr, "%s could not open socket %s\n", |
| 811 | __func__, strerror(errno)); |
| 812 | return sk; |
| 813 | } |
| 814 | |
| 815 | ret = ioctl(sk, IMGETCOUNT, &cnt); |
| 816 | if (ret) { |
| 817 | fprintf(stderr, "%s error getting interf count: %s\n", |
| 818 | __func__, strerror(errno)); |
| 819 | close(sk); |
| 820 | return -ENODEV; |
| 821 | } |
Harald Welte | b5af099 | 2020-01-12 12:59:52 +0100 | [diff] [blame] | 822 | //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] | 823 | printf("%d device%s found\n", cnt, (cnt==1)?"":"s"); |
| 824 | #if 1 |
Harald Welte | c288951 | 2011-09-13 23:49:04 +0100 | [diff] [blame] | 825 | devinfo.id = line->port_nr; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 826 | ret = ioctl(sk, IMGETDEVINFO, &devinfo); |
| 827 | if (ret < 0) { |
| 828 | fprintf(stdout, "error getting info for device %d: %s\n", |
Harald Welte | c288951 | 2011-09-13 23:49:04 +0100 | [diff] [blame] | 829 | line->port_nr, strerror(errno)); |
Holger Hans Peter Freyther | adfa01f | 2014-12-26 18:13:55 +0100 | [diff] [blame] | 830 | close(sk); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 831 | return -ENODEV; |
| 832 | } |
| 833 | fprintf(stdout, " id: %d\n", devinfo.id); |
| 834 | fprintf(stdout, " Dprotocols: %08x\n", devinfo.Dprotocols); |
| 835 | fprintf(stdout, " Bprotocols: %08x\n", devinfo.Bprotocols); |
| 836 | fprintf(stdout, " protocol: %d\n", devinfo.protocol); |
| 837 | fprintf(stdout, " nrbchan: %d\n", devinfo.nrbchan); |
| 838 | fprintf(stdout, " name: %s\n", devinfo.name); |
| 839 | #endif |
Holger Hans Peter Freyther | 219a6a4 | 2013-07-06 18:49:59 +0200 | [diff] [blame] | 840 | close(sk); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 841 | |
| 842 | if (!(devinfo.Dprotocols & (1 << ISDN_P_NT_E1))) { |
| 843 | fprintf(stderr, "error: card is not of type E1 (NT-mode)\n"); |
| 844 | return -EINVAL; |
| 845 | } |
| 846 | |
| 847 | ret = mi_e1_setup(line, 1); |
| 848 | if (ret) |
| 849 | return ret; |
| 850 | |
| 851 | return 0; |
| 852 | } |
| 853 | |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 854 | static int mi_e1_line_update(struct e1inp_line *line) |
| 855 | { |
| 856 | struct misdn_line *ml; |
| 857 | |
| 858 | if (!line->driver_data) |
| 859 | line->driver_data = talloc_zero(line, struct misdn_line); |
| 860 | |
| 861 | ml = line->driver_data; |
| 862 | ml->use_userspace_lapd = 0; |
| 863 | |
| 864 | return _mi_e1_line_update(line); |
| 865 | } |
| 866 | |
| 867 | static int mi_e1_line_update_lapd(struct e1inp_line *line) |
| 868 | { |
| 869 | struct misdn_line *ml; |
| 870 | |
| 871 | if (!line->driver_data) |
| 872 | line->driver_data = talloc_zero(line, struct misdn_line); |
| 873 | |
| 874 | ml = line->driver_data; |
| 875 | ml->use_userspace_lapd = 1; |
| 876 | |
| 877 | return _mi_e1_line_update(line); |
| 878 | } |
| 879 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 880 | void e1inp_misdn_init(void) |
| 881 | { |
| 882 | /* register the driver with the core */ |
| 883 | e1inp_driver_register(&misdn_driver); |
Harald Welte | ce307b4 | 2011-08-21 01:18:05 +0200 | [diff] [blame] | 884 | e1inp_driver_register(&misdn_lapd_driver); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 885 | } |