Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1 | /* OpenBSC Abis input driver for ip.access */ |
| 2 | |
Harald Welte | 4154755 | 2021-04-28 18:23:21 +0200 | [diff] [blame] | 3 | /* (C) 2009-2021 by Harald Welte <laforge@gnumonks.org> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 4 | * (C) 2010 by Holger Hans Peter Freyther |
| 5 | * (C) 2010 by On-Waves |
| 6 | * |
| 7 | * All Rights Reserved |
| 8 | * |
Harald Welte | 323d39d | 2017-11-13 01:09:21 +0900 | [diff] [blame] | 9 | * SPDX-License-Identifier: AGPL-3.0+ |
| 10 | * |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU Affero General Public License as published by |
| 13 | * the Free Software Foundation; either version 3 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU Affero General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU Affero General Public License |
| 22 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 23 | * |
| 24 | */ |
| 25 | |
| 26 | #include "internal.h" |
| 27 | |
| 28 | #include <stdio.h> |
| 29 | #include <unistd.h> |
| 30 | #include <stdlib.h> |
Pablo Neira Ayuso | eb43413 | 2011-07-07 19:19:46 +0200 | [diff] [blame] | 31 | #include <stdbool.h> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 32 | #include <errno.h> |
Daniel Willmann | 8598072 | 2014-01-09 14:30:55 +0100 | [diff] [blame] | 33 | #include <netinet/tcp.h> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 34 | #include <string.h> |
| 35 | #include <time.h> |
Holger Hans Peter Freyther | 2547458 | 2017-01-23 19:49:07 +0100 | [diff] [blame] | 36 | #include <fcntl.h> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 37 | #include <sys/socket.h> |
| 38 | #include <sys/ioctl.h> |
| 39 | #include <arpa/inet.h> |
| 40 | |
| 41 | #include <osmocom/core/select.h> |
| 42 | #include <osmocom/gsm/tlv.h> |
| 43 | #include <osmocom/core/msgb.h> |
Harald Welte | f5efba4 | 2014-08-18 17:30:36 +0200 | [diff] [blame] | 44 | #include <osmocom/core/macaddr.h> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 45 | #include <osmocom/core/logging.h> |
Harald Welte | 71d87b2 | 2011-07-18 14:49:56 +0200 | [diff] [blame] | 46 | #include <osmocom/core/talloc.h> |
Pablo Neira Ayuso | 177094b | 2011-06-07 12:21:51 +0200 | [diff] [blame] | 47 | #include <osmocom/abis/e1_input.h> |
| 48 | #include <osmocom/abis/ipaccess.h> |
Pablo Neira Ayuso | f67471f | 2011-06-07 11:25:49 +0200 | [diff] [blame] | 49 | #include <osmocom/core/socket.h> |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 50 | #include <osmocom/abis/ipa.h> |
Pablo Neira Ayuso | ef13269 | 2013-07-08 01:17:27 +0200 | [diff] [blame] | 51 | #include <osmocom/core/backtrace.h> |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 52 | #include <osmocom/gsm/ipa.h> |
Philipp Maier | f5f31d3 | 2021-12-06 16:46:40 +0100 | [diff] [blame] | 53 | #include <osmocom/core/stats_tcp.h> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 54 | |
Harald Welte | 4154755 | 2021-04-28 18:23:21 +0200 | [diff] [blame] | 55 | /* global parameters of IPA input driver */ |
| 56 | struct ipa_pars g_e1inp_ipaccess_pars; |
| 57 | |
Pablo Neira Ayuso | 54b4979 | 2011-06-07 12:15:26 +0200 | [diff] [blame] | 58 | static void *tall_ipa_ctx; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 59 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 60 | #define TS1_ALLOC_SIZE 900 |
| 61 | |
Daniel Willmann | 8598072 | 2014-01-09 14:30:55 +0100 | [diff] [blame] | 62 | #define DEFAULT_TCP_KEEPALIVE_IDLE_TIMEOUT 30 |
| 63 | #define DEFAULT_TCP_KEEPALIVE_INTERVAL 3 |
| 64 | #define DEFAULT_TCP_KEEPALIVE_RETRY_COUNT 10 |
| 65 | |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 66 | static inline struct e1inp_ts *ipaccess_line_ts(struct osmo_fd *bfd, struct e1inp_line *line) |
| 67 | { |
| 68 | if (bfd->priv_nr == E1INP_SIGN_OML) |
| 69 | return e1inp_line_ipa_oml_ts(line); |
| 70 | else |
| 71 | return e1inp_line_ipa_rsl_ts(line, bfd->priv_nr - E1INP_SIGN_RSL); |
| 72 | } |
| 73 | |
| 74 | static inline void ipaccess_keepalive_fsm_cleanup(struct e1inp_ts *e1i_ts) |
| 75 | { |
| 76 | struct osmo_fsm_inst *ka_fsm; |
| 77 | |
| 78 | ka_fsm = e1i_ts->driver.ipaccess.ka_fsm; |
| 79 | if (ka_fsm) { |
| 80 | ipa_keepalive_fsm_stop(ka_fsm); |
| 81 | e1i_ts->driver.ipaccess.ka_fsm = NULL; |
| 82 | } |
| 83 | } |
| 84 | |
Harald Welte | 10b4130 | 2013-06-30 14:05:49 +0200 | [diff] [blame] | 85 | static int ipaccess_drop(struct osmo_fd *bfd, struct e1inp_line *line) |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 86 | { |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 87 | int ret = 1; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 88 | struct e1inp_ts *e1i_ts = ipaccess_line_ts(bfd, line); |
Pau Espin Pedrol | deb5c4f | 2020-07-31 12:55:01 +0200 | [diff] [blame] | 89 | e1inp_line_get2(line, __func__); |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 90 | |
| 91 | ipaccess_keepalive_fsm_cleanup(e1i_ts); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 92 | |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 93 | /* Error case: we did not see any ID_RESP yet for this socket. */ |
| 94 | if (bfd->fd != -1) { |
Pau Espin Pedrol | 91314c1 | 2020-11-23 14:45:03 +0100 | [diff] [blame] | 95 | LOGPITS(e1i_ts, DLINP, LOGL_NOTICE, "Forcing socket shutdown\n"); |
Pablo Neira Ayuso | 9621b41 | 2011-07-07 16:19:21 +0200 | [diff] [blame] | 96 | osmo_fd_unregister(bfd); |
| 97 | close(bfd->fd); |
| 98 | bfd->fd = -1; |
Pau Espin Pedrol | 9af069d | 2020-11-23 14:54:00 +0100 | [diff] [blame] | 99 | switch (line->ops->cfg.ipa.role) { |
| 100 | case E1INP_LINE_R_BSC: |
| 101 | /* This is BSC code, ipaccess_drop() is only called for |
| 102 | accepted() sockets, hence the bfd holds a reference to |
| 103 | e1inp_line in ->data that needs to be released */ |
| 104 | OSMO_ASSERT(bfd->data == line); |
| 105 | bfd->data = NULL; |
| 106 | e1inp_line_put2(line, "ipa_bfd"); |
| 107 | break; |
| 108 | case E1INP_LINE_R_BTS: |
| 109 | /* BTS code: bfd->data contains pointer to struct |
| 110 | * ipa_client_conn. Leave it alive so it reconnects. |
| 111 | */ |
| 112 | break; |
| 113 | default: |
| 114 | break; |
| 115 | } |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 116 | ret = -ENOENT; |
Pau Espin Pedrol | 91314c1 | 2020-11-23 14:45:03 +0100 | [diff] [blame] | 117 | } else { |
| 118 | LOGPITS(e1i_ts, DLINP, LOGL_ERROR, |
| 119 | "Forcing socket shutdown with no signal link set\n"); |
Pablo Neira Ayuso | 9621b41 | 2011-07-07 16:19:21 +0200 | [diff] [blame] | 120 | } |
Pablo Neira Ayuso | 6cc3f92 | 2012-08-22 13:57:58 +0200 | [diff] [blame] | 121 | |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 122 | msgb_free(e1i_ts->pending_msg); |
| 123 | e1i_ts->pending_msg = NULL; |
| 124 | |
Pablo Neira Ayuso | 6cc3f92 | 2012-08-22 13:57:58 +0200 | [diff] [blame] | 125 | /* e1inp_sign_link_destroy releases the socket descriptors for us. */ |
| 126 | line->ops->sign_link_down(line); |
| 127 | |
Pau Espin Pedrol | deb5c4f | 2020-07-31 12:55:01 +0200 | [diff] [blame] | 128 | e1inp_line_put2(line, __func__); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 129 | return ret; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 130 | } |
| 131 | |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 132 | static void ipa_bsc_keepalive_write_server_cb(struct osmo_fsm_inst *fi, void *conn, struct msgb *msg) |
| 133 | { |
| 134 | struct osmo_fd *bfd = (struct osmo_fd *)conn; |
| 135 | write(bfd->fd, msg->data, msg->len); |
| 136 | msgb_free(msg); |
| 137 | } |
| 138 | |
| 139 | static int ipa_bsc_keepalive_timeout_cb(struct osmo_fsm_inst *fi, void *data) |
| 140 | { |
| 141 | struct osmo_fd *bfd = (struct osmo_fd *)data; |
| 142 | |
| 143 | if (bfd->fd == -1) |
| 144 | return 1; |
| 145 | |
| 146 | ipaccess_drop(bfd, (struct e1inp_line *)bfd->data); |
| 147 | return 1; |
| 148 | } |
| 149 | |
| 150 | static void ipaccess_bsc_keepalive_fsm_alloc(struct e1inp_ts *e1i_ts, struct osmo_fd *bfd, const char *id) |
| 151 | { |
| 152 | struct e1inp_line *line = e1i_ts->line; |
| 153 | struct osmo_fsm_inst *ka_fsm; |
| 154 | |
| 155 | ipaccess_keepalive_fsm_cleanup(e1i_ts); |
| 156 | if (!line->ipa_kap) |
| 157 | return; |
| 158 | |
| 159 | ka_fsm = ipa_generic_conn_alloc_keepalive_fsm(tall_ipa_ctx, bfd, line->ipa_kap, id); |
| 160 | e1i_ts->driver.ipaccess.ka_fsm = ka_fsm; |
| 161 | if (!ka_fsm) |
| 162 | return; |
| 163 | |
| 164 | ipa_keepalive_fsm_set_timeout_cb(ka_fsm, ipa_bsc_keepalive_timeout_cb); |
| 165 | ipa_keepalive_fsm_set_send_cb(ka_fsm, ipa_bsc_keepalive_write_server_cb); |
| 166 | ipa_keepalive_fsm_start(ka_fsm); |
| 167 | } |
| 168 | |
| 169 | static void ipa_bts_keepalive_write_client_cb(struct osmo_fsm_inst *fi, void *conn, struct msgb *msg) { |
| 170 | struct ipa_client_conn *link = (struct ipa_client_conn *)conn; |
| 171 | int ret = 0; |
| 172 | |
| 173 | ret = ipa_send(link->ofd->fd, msg->data, msg->len); |
| 174 | if (ret != msg->len) { |
| 175 | LOGP(DLINP, LOGL_ERROR, "cannot send message. Reason: %s\n", strerror(errno)); |
| 176 | } |
| 177 | msgb_free(msg); |
| 178 | } |
| 179 | |
| 180 | static void update_fd_settings(struct e1inp_line *line, int fd); |
| 181 | static void ipaccess_bts_updown_cb(struct ipa_client_conn *link, int up); |
| 182 | |
| 183 | static int ipa_bts_keepalive_timeout_cb(struct osmo_fsm_inst *fi, void *conn) { |
| 184 | ipaccess_bts_updown_cb(conn, false); |
| 185 | return 1; |
| 186 | } |
| 187 | |
| 188 | static void ipaccess_bts_keepalive_fsm_alloc(struct e1inp_ts *e1i_ts, struct ipa_client_conn *client, const char *id) |
| 189 | { |
| 190 | struct e1inp_line *line = e1i_ts->line; |
| 191 | struct osmo_fsm_inst *ka_fsm; |
| 192 | |
| 193 | ipaccess_keepalive_fsm_cleanup(e1i_ts); |
| 194 | if (!line->ipa_kap) |
| 195 | return; |
| 196 | |
| 197 | ka_fsm = ipa_client_conn_alloc_keepalive_fsm(client, line->ipa_kap, id); |
| 198 | e1i_ts->driver.ipaccess.ka_fsm = ka_fsm; |
| 199 | if (!ka_fsm) |
| 200 | return; |
| 201 | |
| 202 | ipa_keepalive_fsm_set_timeout_cb(ka_fsm, ipa_bts_keepalive_timeout_cb); |
| 203 | ipa_keepalive_fsm_set_send_cb(ka_fsm, ipa_bts_keepalive_write_client_cb); |
| 204 | } |
| 205 | |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 206 | /* Returns -1 on error, and 0 or 1 on success. If -1 or 1 is returned, line has |
| 207 | * been released and should not be used anymore by the caller. */ |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 208 | static int ipaccess_rcvmsg(struct e1inp_line *line, struct msgb *msg, |
| 209 | struct osmo_fd *bfd) |
| 210 | { |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 211 | struct tlv_parsed tlvp; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 212 | uint8_t msg_type = *(msg->l2h); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 213 | struct ipaccess_unit unit_data = {}; |
| 214 | struct e1inp_sign_link *sign_link; |
| 215 | char *unitid; |
| 216 | int len, ret; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 217 | struct e1inp_ts *e1i_ts; |
| 218 | struct osmo_fsm_inst *ka_fsm; |
| 219 | |
| 220 | /* peek the pong for our keepalive fsm */ |
| 221 | e1i_ts = ipaccess_line_ts(bfd, line); |
| 222 | ka_fsm = e1i_ts->driver.ipaccess.ka_fsm; |
| 223 | if (ka_fsm && msg_type == IPAC_MSGT_PONG) |
| 224 | ipa_keepalive_fsm_pong_received(ka_fsm); |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 225 | |
Pablo Neira Ayuso | eb43413 | 2011-07-07 19:19:46 +0200 | [diff] [blame] | 226 | /* Handle IPA PING, PONG and ID_ACK messages. */ |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 227 | ret = ipa_ccm_rcvmsg_base(msg, bfd); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 228 | switch(ret) { |
| 229 | case -1: |
| 230 | /* error in IPA control message handling */ |
| 231 | goto err; |
| 232 | case 1: |
| 233 | /* this is an IPA control message, skip further processing */ |
Pablo Neira Ayuso | eb43413 | 2011-07-07 19:19:46 +0200 | [diff] [blame] | 234 | return 0; |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 235 | case 0: |
| 236 | /* this is not an IPA control message, continue */ |
| 237 | break; |
| 238 | default: |
| 239 | LOGP(DLINP, LOGL_ERROR, "Unexpected return from " |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 240 | "ipa_ccm_rcvmsg_base " |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 241 | "(ret=%d)\n", ret); |
| 242 | goto err; |
| 243 | } |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 244 | |
| 245 | switch (msg_type) { |
| 246 | case IPAC_MSGT_ID_RESP: |
Pau Espin Pedrol | 30e80d5 | 2020-07-14 13:23:05 +0200 | [diff] [blame] | 247 | DEBUGP(DLMI, "ID_RESP "); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 248 | /* parse tags, search for Unit ID */ |
Harald Welte | 82eb55e | 2018-08-01 13:22:55 +0200 | [diff] [blame] | 249 | ret = ipa_ccm_id_resp_parse(&tlvp, (const uint8_t *)msg->l2h+1, msgb_l2len(msg)-1); |
Pau Espin Pedrol | 30e80d5 | 2020-07-14 13:23:05 +0200 | [diff] [blame] | 250 | DEBUGPC(DLMI, "\n"); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 251 | if (ret < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 252 | LOGP(DLINP, LOGL_ERROR, "IPA response message " |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 253 | "with malformed TLVs\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 254 | goto err; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 255 | } |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 256 | if (!TLVP_PRESENT(&tlvp, IPAC_IDTAG_UNIT)) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 257 | LOGP(DLINP, LOGL_ERROR, "IPA response message " |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 258 | "without unit ID\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 259 | goto err; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 260 | |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 261 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 262 | len = TLVP_LEN(&tlvp, IPAC_IDTAG_UNIT); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 263 | if (len < 1) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 264 | LOGP(DLINP, LOGL_ERROR, "IPA response message " |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 265 | "with too small unit ID\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 266 | goto err; |
| 267 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 268 | unitid = (char *) TLVP_VAL(&tlvp, IPAC_IDTAG_UNIT); |
| 269 | unitid[len - 1] = '\0'; |
Vadim Yanitskiy | 1c94f6a | 2019-12-02 02:16:07 +0700 | [diff] [blame] | 270 | ret = ipa_parse_unitid(unitid, &unit_data); |
| 271 | if (ret) { |
| 272 | LOGP(DLINP, LOGL_ERROR, "Failed to parse unit ID '%s'\n", unitid); |
| 273 | goto err; |
| 274 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 275 | |
Pablo Neira Ayuso | f163d23 | 2011-06-25 18:42:55 +0200 | [diff] [blame] | 276 | if (!line->ops->sign_link_up) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 277 | LOGP(DLINP, LOGL_ERROR, |
Pablo Neira Ayuso | cd8d2e5 | 2011-07-02 17:05:21 +0200 | [diff] [blame] | 278 | "Unable to set signal link, closing socket.\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 279 | goto err; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 280 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 281 | /* the BSC creates the new sign links at this stage. */ |
| 282 | if (bfd->priv_nr == E1INP_SIGN_OML) { |
| 283 | sign_link = |
| 284 | line->ops->sign_link_up(&unit_data, line, |
| 285 | E1INP_SIGN_OML); |
| 286 | if (sign_link == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 287 | LOGP(DLINP, LOGL_ERROR, |
Pablo Neira Ayuso | cd8d2e5 | 2011-07-02 17:05:21 +0200 | [diff] [blame] | 288 | "Unable to set signal link, " |
| 289 | "closing socket.\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 290 | goto err; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 291 | } |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 292 | |
| 293 | ipaccess_bsc_keepalive_fsm_alloc(e1i_ts, bfd, "oml_bsc_to_bts"); |
| 294 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 295 | } else if (bfd->priv_nr == E1INP_SIGN_RSL) { |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 296 | struct e1inp_ts *ts; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 297 | struct osmo_fd *newbfd; |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 298 | struct e1inp_line *new_line; |
Michael Iedema | ee2589e | 2022-05-03 07:27:38 -0700 | [diff] [blame] | 299 | char tcp_stat_name[64]; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 300 | |
| 301 | sign_link = |
| 302 | line->ops->sign_link_up(&unit_data, line, |
| 303 | E1INP_SIGN_RSL); |
| 304 | if (sign_link == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 305 | LOGP(DLINP, LOGL_ERROR, |
Pablo Neira Ayuso | cd8d2e5 | 2011-07-02 17:05:21 +0200 | [diff] [blame] | 306 | "Unable to set signal link, " |
| 307 | "closing socket.\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 308 | goto err; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 309 | } |
Pau Espin Pedrol | 8a4e3d9 | 2020-07-14 21:20:55 +0200 | [diff] [blame] | 310 | /* Finally, we know which OML link is associated with |
| 311 | * this RSL link, attach it to this socket. */ |
| 312 | new_line = sign_link->ts->line; |
Pablo Neira Ayuso | db1c8a7 | 2011-07-08 15:12:03 +0200 | [diff] [blame] | 313 | /* this is a bugtrap, the BSC should be using the |
| 314 | * virtual E1 line used by OML for this RSL link. */ |
Pau Espin Pedrol | 8a4e3d9 | 2020-07-14 21:20:55 +0200 | [diff] [blame] | 315 | if (new_line == line) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 316 | LOGP(DLINP, LOGL_ERROR, |
Pablo Neira Ayuso | db1c8a7 | 2011-07-08 15:12:03 +0200 | [diff] [blame] | 317 | "Fix your BSC, you should use the " |
| 318 | "E1 line used by the OML link for " |
| 319 | "your RSL link.\n"); |
| 320 | return 0; |
| 321 | } |
Pau Espin Pedrol | 5196cd5 | 2020-07-14 17:52:09 +0200 | [diff] [blame] | 322 | e1inp_line_get2(new_line, "ipa_bfd"); |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 323 | ts = e1inp_line_ipa_rsl_ts(new_line, unit_data.trx_id); |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 324 | newbfd = &ts->driver.ipaccess.fd; |
Pau Espin Pedrol | 815117c | 2020-07-14 21:19:16 +0200 | [diff] [blame] | 325 | OSMO_ASSERT(newbfd != bfd); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 326 | |
Pau Espin Pedrol | 56ae85f | 2018-08-22 13:11:19 +0200 | [diff] [blame] | 327 | /* preserve 'newbfd->when' flags potentially set by sign_link_up() */ |
Pau Espin Pedrol | 67902bb | 2018-08-23 14:35:08 +0200 | [diff] [blame] | 328 | osmo_fd_setup(newbfd, bfd->fd, newbfd->when | bfd->when, bfd->cb, |
Pau Espin Pedrol | 8a4e3d9 | 2020-07-14 21:20:55 +0200 | [diff] [blame] | 329 | new_line, E1INP_SIGN_RSL + unit_data.trx_id); |
| 330 | |
| 331 | |
| 332 | /* now we can release the dummy RSL line (old temporary bfd). */ |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 333 | osmo_fd_unregister(bfd); |
| 334 | bfd->fd = -1; |
Pau Espin Pedrol | 8a4e3d9 | 2020-07-14 21:20:55 +0200 | [diff] [blame] | 335 | /* bfd->data holds a reference to line, drop it */ |
| 336 | OSMO_ASSERT(bfd->data == line); |
| 337 | bfd->data = NULL; |
| 338 | e1inp_line_put2(line, "ipa_bfd"); |
| 339 | |
Harald Welte | ae3a993 | 2016-11-26 09:25:23 +0100 | [diff] [blame] | 340 | ret = osmo_fd_register(newbfd); |
| 341 | if (ret < 0) { |
| 342 | LOGP(DLINP, LOGL_ERROR, |
| 343 | "could not register FD\n"); |
| 344 | goto err; |
| 345 | } |
Michael Iedema | ee2589e | 2022-05-03 07:27:38 -0700 | [diff] [blame] | 346 | snprintf(tcp_stat_name, sizeof(tcp_stat_name), "site.%u.bts.%u.ipa-rsl.%u", |
| 347 | unit_data.site_id, unit_data.bts_id, unit_data.trx_id); |
Michael Iedema | 2966786 | 2022-02-24 09:25:20 -0800 | [diff] [blame] | 348 | osmo_stats_tcp_osmo_fd_register(newbfd, tcp_stat_name); |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 349 | |
| 350 | e1i_ts = ipaccess_line_ts(newbfd, new_line); |
| 351 | ipaccess_bsc_keepalive_fsm_alloc(e1i_ts, newbfd, "rsl_bsc_to_bts"); |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 352 | return 1; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 353 | } |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 354 | break; |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 355 | default: |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 356 | LOGP(DLINP, LOGL_ERROR, "Unknown IPA message type\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 357 | goto err; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 358 | } |
| 359 | return 0; |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 360 | err: |
Harald Welte | b4a7db0 | 2019-07-21 11:51:56 +0200 | [diff] [blame] | 361 | if (bfd->fd != -1) { |
Pau Espin Pedrol | dc55a5f | 2020-07-14 21:14:34 +0200 | [diff] [blame] | 362 | osmo_fd_unregister(bfd); |
Harald Welte | b4a7db0 | 2019-07-21 11:51:56 +0200 | [diff] [blame] | 363 | close(bfd->fd); |
| 364 | bfd->fd = -1; |
Pau Espin Pedrol | dc55a5f | 2020-07-14 21:14:34 +0200 | [diff] [blame] | 365 | /* This is a BSC accepted socket, bfd->data holds a reference to line, drop it */ |
| 366 | OSMO_ASSERT(bfd->data == line); |
| 367 | bfd->data = NULL; |
| 368 | e1inp_line_put2(line, "ipa_bfd"); |
Harald Welte | b4a7db0 | 2019-07-21 11:51:56 +0200 | [diff] [blame] | 369 | } |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 370 | return -1; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 371 | } |
| 372 | |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 373 | /* Returns -EBADF if bfd cannot be used by the caller anymore after return. */ |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 374 | static int handle_ts1_read(struct osmo_fd *bfd) |
| 375 | { |
| 376 | struct e1inp_line *line = bfd->data; |
| 377 | unsigned int ts_nr = bfd->priv_nr; |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 378 | struct e1inp_ts *e1i_ts; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 379 | struct e1inp_sign_link *link; |
| 380 | struct ipaccess_head *hh; |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 381 | struct msgb *msg = NULL; |
Max | c9fa25e | 2017-01-09 13:23:15 +0100 | [diff] [blame] | 382 | int ret, rc; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 383 | |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 384 | e1i_ts = ipaccess_line_ts(bfd, line); |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 385 | ret = ipa_msg_recv_buffered(bfd->fd, &msg, &e1i_ts->pending_msg); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 386 | if (ret < 0) { |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 387 | if (ret == -EAGAIN) |
| 388 | return 0; |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 389 | LOGP(DLINP, LOGL_NOTICE, "Sign link problems, " |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 390 | "closing socket. Reason: %s\n", strerror(-ret)); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 391 | goto err; |
| 392 | } else if (ret == 0) { |
| 393 | LOGP(DLINP, LOGL_NOTICE, "Sign link vanished, dead socket\n"); |
| 394 | goto err; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 395 | } |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 396 | DEBUGP(DLMI, "RX %u: %s\n", ts_nr, osmo_hexdump(msgb_l2(msg), msgb_l2len(msg))); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 397 | |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 398 | hh = (struct ipaccess_head *) msg->data; |
| 399 | if (hh->proto == IPAC_PROTO_IPACCESS) { |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 400 | ret = ipaccess_rcvmsg(line, msg, bfd); |
| 401 | /* BIG FAT WARNING: bfd might no longer exist here (ret != 0), |
| 402 | * since ipaccess_rcvmsg() might have free'd it !!! */ |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 403 | msgb_free(msg); |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 404 | return ret != 0 ? -EBADF : 0; |
Holger Hans Peter Freyther | 63ddf46 | 2013-12-28 21:19:19 +0100 | [diff] [blame] | 405 | } else if (e1i_ts->type == E1INP_TS_TYPE_NONE) { |
| 406 | /* this sign link is not know yet.. complain. */ |
| 407 | LOGP(DLINP, LOGL_ERROR, "Timeslot is not configured.\n"); |
Holger Hans Peter Freyther | 63ddf46 | 2013-12-28 21:19:19 +0100 | [diff] [blame] | 408 | goto err_msg; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 409 | } |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 410 | |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 411 | link = e1inp_lookup_sign_link(e1i_ts, hh->proto, 0); |
| 412 | if (!link) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 413 | LOGP(DLINP, LOGL_ERROR, "no matching signalling link for " |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 414 | "hh->proto=0x%02x\n", hh->proto); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 415 | goto err_msg; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 416 | } |
| 417 | msg->dst = link; |
| 418 | |
| 419 | /* XXX better use e1inp_ts_rx? */ |
Pablo Neira Ayuso | f163d23 | 2011-06-25 18:42:55 +0200 | [diff] [blame] | 420 | if (!e1i_ts->line->ops->sign_link) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 421 | LOGP(DLINP, LOGL_ERROR, "Fix your application, " |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 422 | "no action set for signalling messages.\n"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 423 | goto err_msg; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 424 | } |
Max | c9fa25e | 2017-01-09 13:23:15 +0100 | [diff] [blame] | 425 | rc = e1i_ts->line->ops->sign_link(msg); |
| 426 | if (rc < 0) { |
Pablo Neira Ayuso | a49c24d | 2012-10-16 11:24:08 +0200 | [diff] [blame] | 427 | /* Don't close the signalling link if the upper layers report |
| 428 | * an error, that's too strict. BTW, the signalling layer is |
| 429 | * resposible for releasing the message. |
| 430 | */ |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 431 | LOGP(DLINP, LOGL_ERROR, "Bad signalling message," |
Max | c9fa25e | 2017-01-09 13:23:15 +0100 | [diff] [blame] | 432 | " sign_link returned error: %s.\n", strerror(-rc)); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 433 | } |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 434 | |
Pau Espin Pedrol | ed122f3 | 2018-08-28 18:25:02 +0200 | [diff] [blame] | 435 | return rc; |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 436 | err_msg: |
| 437 | msgb_free(msg); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 438 | err: |
Harald Welte | 10b4130 | 2013-06-30 14:05:49 +0200 | [diff] [blame] | 439 | ipaccess_drop(bfd, line); |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 440 | return -EBADF; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 441 | } |
| 442 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 443 | static int ts_want_write(struct e1inp_ts *e1i_ts) |
| 444 | { |
Harald Welte | 949b8a2 | 2020-10-18 23:01:53 +0200 | [diff] [blame] | 445 | osmo_fd_write_enable(&e1i_ts->driver.ipaccess.fd); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 446 | |
| 447 | return 0; |
| 448 | } |
| 449 | |
Pablo Neira Ayuso | add3ec8 | 2011-07-05 14:45:46 +0200 | [diff] [blame] | 450 | static void ipaccess_close(struct e1inp_sign_link *sign_link) |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 451 | { |
Pablo Neira Ayuso | add3ec8 | 2011-07-05 14:45:46 +0200 | [diff] [blame] | 452 | struct e1inp_ts *e1i_ts = sign_link->ts; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 453 | struct osmo_fd *bfd = &e1i_ts->driver.ipaccess.fd; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 454 | struct e1inp_line *line = e1i_ts->line; |
| 455 | |
| 456 | /* line might not exist if != bsc||bts */ |
| 457 | if (line) { |
| 458 | /* depending on caller the fsm might be dead */ |
| 459 | struct osmo_fsm_inst* ka_fsm = ipaccess_line_ts(bfd, line)->driver.ipaccess.ka_fsm; |
| 460 | if (ka_fsm) |
| 461 | ipa_keepalive_fsm_stop(ka_fsm); |
| 462 | |
| 463 | } |
| 464 | |
Pau Espin Pedrol | 8737ad4 | 2020-07-14 21:11:56 +0200 | [diff] [blame] | 465 | e1inp_int_snd_event(e1i_ts, sign_link, S_L_INP_TEI_DN); |
| 466 | /* the first e1inp_sign_link_destroy call closes the socket. */ |
| 467 | if (bfd->fd != -1) { |
| 468 | osmo_fd_unregister(bfd); |
| 469 | close(bfd->fd); |
| 470 | bfd->fd = -1; |
| 471 | /* If The bfd holds a reference to e1inp_line in ->data (BSC |
| 472 | * accepted() sockets), then release it */ |
| 473 | if (bfd->data == line) { |
| 474 | bfd->data = NULL; |
| 475 | e1inp_line_put2(line, "ipa_bfd"); |
| 476 | } |
| 477 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 478 | } |
| 479 | |
Pau Espin Pedrol | 90df035 | 2022-05-09 12:59:35 +0200 | [diff] [blame] | 480 | static bool e1i_ts_has_pending_tx_msgs(struct e1inp_ts *e1i_ts) |
| 481 | { |
| 482 | struct e1inp_sign_link *link; |
| 483 | llist_for_each_entry(link, &e1i_ts->sign.sign_links, list) { |
| 484 | if (!llist_empty(&link->tx_list)) { |
| 485 | return true; |
| 486 | } |
| 487 | } |
| 488 | return false; |
| 489 | } |
| 490 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 491 | static void timeout_ts1_write(void *data) |
| 492 | { |
| 493 | struct e1inp_ts *e1i_ts = (struct e1inp_ts *)data; |
| 494 | |
| 495 | /* trigger write of ts1, due to tx delay timer */ |
Pau Espin Pedrol | 90df035 | 2022-05-09 12:59:35 +0200 | [diff] [blame] | 496 | if (e1i_ts_has_pending_tx_msgs(e1i_ts)) |
| 497 | ts_want_write(e1i_ts); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 498 | } |
| 499 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 500 | static int __handle_ts1_write(struct osmo_fd *bfd, struct e1inp_line *line) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 501 | { |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 502 | unsigned int ts_nr = bfd->priv_nr; |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 503 | struct e1inp_ts *e1i_ts; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 504 | struct e1inp_sign_link *sign_link; |
| 505 | struct msgb *msg; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 506 | int ret; |
| 507 | |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 508 | e1i_ts = ipaccess_line_ts(bfd, line); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 509 | |
| 510 | /* get the next msg for this timeslot */ |
| 511 | msg = e1inp_tx_ts(e1i_ts, &sign_link); |
| 512 | if (!msg) { |
| 513 | /* no message after tx delay timer */ |
Harald Welte | 28fea77 | 2022-05-06 19:38:33 +0000 | [diff] [blame] | 514 | osmo_fd_write_disable(bfd); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 515 | return 0; |
| 516 | } |
| 517 | |
| 518 | switch (sign_link->type) { |
| 519 | case E1INP_SIGN_OML: |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 520 | case E1INP_SIGN_RSL: |
Harald Welte | 46fc7e2 | 2014-08-18 19:04:26 +0200 | [diff] [blame] | 521 | case E1INP_SIGN_OSMO: |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 522 | break; |
| 523 | default: |
Pau Espin Pedrol | d20a10c | 2022-05-09 12:45:07 +0200 | [diff] [blame] | 524 | /* leave WRITE flag enabled, come back for more msg */ |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 525 | ret = -EINVAL; |
| 526 | goto out; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 527 | } |
| 528 | |
| 529 | msg->l2h = msg->data; |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 530 | ipa_prepend_header(msg, sign_link->tei); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 531 | |
Vadim Yanitskiy | 77a7cf4 | 2020-11-29 20:39:57 +0100 | [diff] [blame] | 532 | LOGPITS(e1i_ts, DLMI, LOGL_DEBUG, "TX %u: %s\n", ts_nr, |
Pau Espin Pedrol | 3bdf59b | 2020-11-23 13:47:16 +0100 | [diff] [blame] | 533 | osmo_hexdump(msg->l2h, msgb_l2len(msg))); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 534 | |
| 535 | ret = send(bfd->fd, msg->data, msg->len, 0); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 536 | if (ret != msg->len) { |
Pau Espin Pedrol | 3bdf59b | 2020-11-23 13:47:16 +0100 | [diff] [blame] | 537 | LOGPITS(e1i_ts, DLINP, LOGL_ERROR, "failed to send A-bis IPA signalling " |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 538 | "message. Reason: %s\n", strerror(errno)); |
| 539 | goto err; |
| 540 | } |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 541 | |
Harald Welte | 28fea77 | 2022-05-06 19:38:33 +0000 | [diff] [blame] | 542 | /* this is some ancient code that apparently exists to slow down writes towards |
| 543 | * some even more ancient nanoBTS 900 units. See git commit |
| 544 | * d49fc5ae24fc9d44d2b284392ab619cc7a69a876 of openbsc.git (now osmo-bsc.git) */ |
| 545 | if (e1i_ts->sign.delay) { |
| 546 | osmo_fd_write_disable(bfd); |
| 547 | /* set tx delay timer for next event */ |
| 548 | osmo_timer_setup(&e1i_ts->sign.tx_timer, timeout_ts1_write, e1i_ts); |
| 549 | osmo_timer_schedule(&e1i_ts->sign.tx_timer, 0, e1i_ts->sign.delay); |
Pau Espin Pedrol | 90df035 | 2022-05-09 12:59:35 +0200 | [diff] [blame] | 550 | } else { |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 551 | out: |
Pau Espin Pedrol | 90df035 | 2022-05-09 12:59:35 +0200 | [diff] [blame] | 552 | if (!e1i_ts_has_pending_tx_msgs(e1i_ts)) |
| 553 | osmo_fd_write_disable(bfd); |
| 554 | } |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 555 | msgb_free(msg); |
| 556 | return ret; |
| 557 | err: |
Harald Welte | 10b4130 | 2013-06-30 14:05:49 +0200 | [diff] [blame] | 558 | ipaccess_drop(bfd, line); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 559 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 560 | return ret; |
| 561 | } |
| 562 | |
Pablo Neira Ayuso | 88136fc | 2011-07-08 16:21:55 +0200 | [diff] [blame] | 563 | static int handle_ts1_write(struct osmo_fd *bfd) |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 564 | { |
| 565 | struct e1inp_line *line = bfd->data; |
| 566 | |
| 567 | return __handle_ts1_write(bfd, line); |
| 568 | } |
| 569 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 570 | static int ipaccess_bts_write_cb(struct ipa_client_conn *link) |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 571 | { |
| 572 | struct e1inp_line *line = link->line; |
| 573 | |
| 574 | return __handle_ts1_write(link->ofd, line); |
| 575 | } |
| 576 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 577 | /* callback from select.c in case one of the fd's can be read/written */ |
Pablo Neira Ayuso | 495ddb6 | 2011-07-08 21:04:11 +0200 | [diff] [blame] | 578 | int ipaccess_fd_cb(struct osmo_fd *bfd, unsigned int what) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 579 | { |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 580 | int rc = 0; |
| 581 | |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 582 | if (what & OSMO_FD_READ) |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 583 | rc = handle_ts1_read(bfd); |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 584 | if (rc != -EBADF && (what & OSMO_FD_WRITE)) |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 585 | rc = handle_ts1_write(bfd); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 586 | |
| 587 | return rc; |
| 588 | } |
| 589 | |
Pablo Neira Ayuso | 4e862cb | 2011-08-19 18:43:38 +0200 | [diff] [blame] | 590 | static int ipaccess_line_update(struct e1inp_line *line); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 591 | |
| 592 | struct e1inp_driver ipaccess_driver = { |
| 593 | .name = "ipa", |
| 594 | .want_write = ts_want_write, |
| 595 | .line_update = ipaccess_line_update, |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 596 | .close = ipaccess_close, |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 597 | .default_delay = 0, |
Jacob Erlbeck | 8fe1571 | 2014-01-09 14:30:58 +0100 | [diff] [blame] | 598 | .has_keepalive = 1, |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 599 | }; |
| 600 | |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 601 | static void update_fd_settings(struct e1inp_line *line, int fd) |
| 602 | { |
| 603 | int ret; |
| 604 | int val; |
| 605 | |
Jacob Erlbeck | 8fe1571 | 2014-01-09 14:30:58 +0100 | [diff] [blame] | 606 | if (line->keepalive_num_probes) { |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 607 | /* Enable TCP keepalive to find out if the connection is gone */ |
| 608 | val = 1; |
| 609 | ret = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &val, sizeof(val)); |
| 610 | if (ret < 0) |
| 611 | LOGP(DLINP, LOGL_NOTICE, "Failed to set keepalive: %s\n", |
| 612 | strerror(errno)); |
| 613 | else |
| 614 | LOGP(DLINP, LOGL_NOTICE, "Keepalive is set: %i\n", ret); |
| 615 | |
| 616 | #if defined(TCP_KEEPIDLE) && defined(TCP_KEEPINTVL) && defined(TCP_KEEPCNT) |
| 617 | /* The following options are not portable! */ |
Jacob Erlbeck | 8fe1571 | 2014-01-09 14:30:58 +0100 | [diff] [blame] | 618 | val = line->keepalive_idle_timeout > 0 ? |
| 619 | line->keepalive_idle_timeout : |
| 620 | DEFAULT_TCP_KEEPALIVE_IDLE_TIMEOUT; |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 621 | ret = setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE, |
| 622 | &val, sizeof(val)); |
| 623 | if (ret < 0) |
| 624 | LOGP(DLINP, LOGL_NOTICE, |
| 625 | "Failed to set keepalive idle time: %s\n", |
| 626 | strerror(errno)); |
Jacob Erlbeck | 8fe1571 | 2014-01-09 14:30:58 +0100 | [diff] [blame] | 627 | val = line->keepalive_probe_interval > -1 ? |
| 628 | line->keepalive_probe_interval : |
| 629 | DEFAULT_TCP_KEEPALIVE_INTERVAL; |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 630 | ret = setsockopt(fd, IPPROTO_TCP, TCP_KEEPINTVL, |
| 631 | &val, sizeof(val)); |
| 632 | if (ret < 0) |
| 633 | LOGP(DLINP, LOGL_NOTICE, |
| 634 | "Failed to set keepalive interval: %s\n", |
| 635 | strerror(errno)); |
Jacob Erlbeck | 8fe1571 | 2014-01-09 14:30:58 +0100 | [diff] [blame] | 636 | val = line->keepalive_num_probes > 0 ? |
| 637 | line->keepalive_num_probes : |
| 638 | DEFAULT_TCP_KEEPALIVE_RETRY_COUNT; |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 639 | ret = setsockopt(fd, IPPROTO_TCP, TCP_KEEPCNT, |
| 640 | &val, sizeof(val)); |
| 641 | if (ret < 0) |
| 642 | LOGP(DLINP, LOGL_NOTICE, |
| 643 | "Failed to set keepalive count: %s\n", |
| 644 | strerror(errno)); |
Eric Wild | 6eb186c | 2019-06-21 15:26:25 +0200 | [diff] [blame] | 645 | #if defined(TCP_USER_TIMEOUT) |
| 646 | val = 1000 * line->keepalive_num_probes * |
| 647 | line->keepalive_probe_interval + |
| 648 | line->keepalive_idle_timeout; |
| 649 | ret = setsockopt(fd, IPPROTO_TCP, TCP_USER_TIMEOUT, |
| 650 | &val, sizeof(val)); |
| 651 | if (ret < 0) |
| 652 | LOGP(DLINP, LOGL_NOTICE, |
| 653 | "Failed to set user timoeut: %s\n", |
| 654 | strerror(errno)); |
| 655 | #endif |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 656 | #endif |
Holger Hans Peter Freyther | f465a4c | 2014-02-03 09:34:02 +0100 | [diff] [blame] | 657 | } |
Oliver Smith | 62725d0 | 2020-04-17 10:57:46 +0200 | [diff] [blame] | 658 | |
| 659 | val = 1; |
| 660 | ret = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val)); |
| 661 | if (ret < 0) |
| 662 | LOGP(DLINP, LOGL_ERROR, "Failed to set TCP_NODELAY: %s\n", strerror(errno)); |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 663 | } |
| 664 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 665 | /* callback of the OML listening filedescriptor */ |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 666 | static int ipaccess_bsc_oml_cb(struct ipa_server_link *link, int fd) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 667 | { |
| 668 | int ret; |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 669 | int i; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 670 | struct e1inp_line *line; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 671 | struct e1inp_ts *e1i_ts; |
| 672 | struct osmo_fd *bfd; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 673 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 674 | /* clone virtual E1 line for this new OML link. */ |
Pau Espin Pedrol | 5196cd5 | 2020-07-14 17:52:09 +0200 | [diff] [blame] | 675 | line = e1inp_line_clone(tall_ipa_ctx, link->line, "ipa_bfd"); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 676 | if (line == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 677 | LOGP(DLINP, LOGL_ERROR, "could not clone E1 line\n"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 678 | return -ENOMEM; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 679 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 680 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 681 | /* create virrtual E1 timeslots for signalling */ |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 682 | e1inp_ts_config_sign(e1inp_line_ipa_oml_ts(line), line); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 683 | |
| 684 | /* initialize the fds */ |
| 685 | for (i = 0; i < ARRAY_SIZE(line->ts); ++i) |
| 686 | line->ts[i].driver.ipaccess.fd.fd = -1; |
| 687 | |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 688 | e1i_ts = e1inp_line_ipa_oml_ts(line); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 689 | |
Pablo Neira Ayuso | 93c6201 | 2011-06-26 19:12:47 +0200 | [diff] [blame] | 690 | bfd = &e1i_ts->driver.ipaccess.fd; |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 691 | osmo_fd_setup(bfd, fd, OSMO_FD_READ, ipaccess_fd_cb, line, E1INP_SIGN_OML); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 692 | ret = osmo_fd_register(bfd); |
| 693 | if (ret < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 694 | LOGP(DLINP, LOGL_ERROR, "could not register FD\n"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 695 | goto err_line; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 696 | } |
Philipp Maier | f5f31d3 | 2021-12-06 16:46:40 +0100 | [diff] [blame] | 697 | osmo_stats_tcp_osmo_fd_register(bfd, "ipa-oml"); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 698 | |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 699 | update_fd_settings(line, bfd->fd); |
Daniel Willmann | 8598072 | 2014-01-09 14:30:55 +0100 | [diff] [blame] | 700 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 701 | /* Request ID. FIXME: request LOCATION, HW/SW VErsion, Unit Name, Serno */ |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 702 | ret = ipa_ccm_send_id_req(bfd->fd); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 703 | if (ret < 0) { |
| 704 | LOGP(DLINP, LOGL_ERROR, "could not send ID REQ. Reason: %s\n", |
| 705 | strerror(errno)); |
| 706 | goto err_socket; |
| 707 | } |
| 708 | return ret; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 709 | |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 710 | err_socket: |
| 711 | osmo_fd_unregister(bfd); |
| 712 | err_line: |
| 713 | close(bfd->fd); |
| 714 | bfd->fd = -1; |
Pau Espin Pedrol | a2ff733 | 2020-07-14 21:12:50 +0200 | [diff] [blame] | 715 | bfd->data = NULL; |
Pau Espin Pedrol | 5196cd5 | 2020-07-14 17:52:09 +0200 | [diff] [blame] | 716 | e1inp_line_put2(line, "ipa_bfd"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 717 | return ret; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 718 | } |
| 719 | |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 720 | static int ipaccess_bsc_rsl_cb(struct ipa_server_link *link, int fd) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 721 | { |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 722 | struct e1inp_line *line; |
| 723 | struct e1inp_ts *e1i_ts; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 724 | struct osmo_fd *bfd; |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 725 | int i, ret; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 726 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 727 | /* We don't know yet which OML link to associate it with. Thus, we |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 728 | * allocate a temporary E1 line until we have received ID. */ |
Pau Espin Pedrol | 5196cd5 | 2020-07-14 17:52:09 +0200 | [diff] [blame] | 729 | line = e1inp_line_clone(tall_ipa_ctx, link->line, "ipa_bfd"); |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 730 | if (line == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 731 | LOGP(DLINP, LOGL_ERROR, "could not clone E1 line\n"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 732 | return -ENOMEM; |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 733 | } |
| 734 | /* initialize the fds */ |
| 735 | for (i = 0; i < ARRAY_SIZE(line->ts); ++i) |
| 736 | line->ts[i].driver.ipaccess.fd.fd = -1; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 737 | |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 738 | /* we need this to initialize this in case to avoid crashes in case |
| 739 | * that the socket is closed before we've seen an ID_RESP. */ |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 740 | e1inp_ts_config_sign(e1inp_line_ipa_oml_ts(line), line); |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 741 | |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 742 | e1i_ts = e1inp_line_ipa_rsl_ts(line, 0); |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 743 | |
| 744 | bfd = &e1i_ts->driver.ipaccess.fd; |
Harald Welte | de3959e | 2020-10-18 22:28:50 +0200 | [diff] [blame] | 745 | osmo_fd_setup(bfd, fd, OSMO_FD_READ, ipaccess_fd_cb, line, E1INP_SIGN_RSL); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 746 | ret = osmo_fd_register(bfd); |
| 747 | if (ret < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 748 | LOGP(DLINP, LOGL_ERROR, "could not register FD\n"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 749 | goto err_line; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 750 | } |
Philipp Maier | f5f31d3 | 2021-12-06 16:46:40 +0100 | [diff] [blame] | 751 | osmo_stats_tcp_osmo_fd_register(bfd, "ipa-rsl"); |
| 752 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 753 | /* Request ID. FIXME: request LOCATION, HW/SW VErsion, Unit Name, Serno */ |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 754 | ret = ipa_ccm_send_id_req(bfd->fd); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 755 | if (ret < 0) { |
| 756 | LOGP(DLINP, LOGL_ERROR, "could not send ID REQ. Reason: %s\n", |
| 757 | strerror(errno)); |
| 758 | goto err_socket; |
| 759 | } |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 760 | update_fd_settings(line, bfd->fd); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 761 | return ret; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 762 | |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 763 | err_socket: |
| 764 | osmo_fd_unregister(bfd); |
| 765 | err_line: |
| 766 | close(bfd->fd); |
| 767 | bfd->fd = -1; |
Pau Espin Pedrol | a2ff733 | 2020-07-14 21:12:50 +0200 | [diff] [blame] | 768 | bfd->data = NULL; |
Pau Espin Pedrol | 5196cd5 | 2020-07-14 17:52:09 +0200 | [diff] [blame] | 769 | e1inp_line_put2(line, "ipa_bfd"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 770 | return ret; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 771 | } |
| 772 | |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 773 | #define IPA_STRING_MAX 64 |
| 774 | |
| 775 | static struct msgb * |
Max | 7139352 | 2018-01-08 15:42:00 +0100 | [diff] [blame] | 776 | ipa_bts_id_resp(const struct ipaccess_unit *dev, uint8_t *data, int len, int trx_nr) |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 777 | { |
| 778 | struct msgb *nmsg; |
| 779 | char str[IPA_STRING_MAX]; |
| 780 | uint8_t *tag; |
| 781 | |
| 782 | memset(str, 0, sizeof(str)); |
| 783 | |
| 784 | nmsg = ipa_msg_alloc(0); |
| 785 | if (!nmsg) |
| 786 | return NULL; |
| 787 | |
| 788 | *msgb_put(nmsg, 1) = IPAC_MSGT_ID_RESP; |
| 789 | while (len) { |
| 790 | if (len < 2) { |
| 791 | LOGP(DLINP, LOGL_NOTICE, |
| 792 | "Short read of ipaccess tag\n"); |
| 793 | msgb_free(nmsg); |
| 794 | return NULL; |
| 795 | } |
| 796 | switch (data[1]) { |
| 797 | case IPAC_IDTAG_UNIT: |
| 798 | snprintf(str, sizeof(str), "%u/%u/%u", |
| 799 | dev->site_id, dev->bts_id, trx_nr); |
| 800 | break; |
| 801 | case IPAC_IDTAG_MACADDR: |
| 802 | snprintf(str, sizeof(str), |
| 803 | "%02x:%02x:%02x:%02x:%02x:%02x", |
| 804 | dev->mac_addr[0], dev->mac_addr[1], |
| 805 | dev->mac_addr[2], dev->mac_addr[3], |
| 806 | dev->mac_addr[4], dev->mac_addr[5]); |
| 807 | break; |
| 808 | case IPAC_IDTAG_LOCATION1: |
| 809 | if (dev->location1) |
Stefan Sperling | 961776a | 2018-12-06 13:09:48 +0100 | [diff] [blame] | 810 | osmo_strlcpy(str, dev->location1, sizeof(str)); |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 811 | break; |
| 812 | case IPAC_IDTAG_LOCATION2: |
| 813 | if (dev->location2) |
Stefan Sperling | 961776a | 2018-12-06 13:09:48 +0100 | [diff] [blame] | 814 | osmo_strlcpy(str, dev->location2, sizeof(str)); |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 815 | break; |
| 816 | case IPAC_IDTAG_EQUIPVERS: |
| 817 | if (dev->equipvers) |
Stefan Sperling | 961776a | 2018-12-06 13:09:48 +0100 | [diff] [blame] | 818 | osmo_strlcpy(str, dev->equipvers, sizeof(str)); |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 819 | break; |
| 820 | case IPAC_IDTAG_SWVERSION: |
| 821 | if (dev->swversion) |
Neels Hofmeyr | 4c57eef | 2018-07-26 17:28:24 +0200 | [diff] [blame] | 822 | osmo_strlcpy(str, dev->swversion, sizeof(str)); |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 823 | break; |
| 824 | case IPAC_IDTAG_UNITNAME: |
| 825 | snprintf(str, sizeof(str), |
| 826 | "%s-%02x-%02x-%02x-%02x-%02x-%02x", |
| 827 | dev->unit_name, |
| 828 | dev->mac_addr[0], dev->mac_addr[1], |
| 829 | dev->mac_addr[2], dev->mac_addr[3], |
| 830 | dev->mac_addr[4], dev->mac_addr[5]); |
| 831 | break; |
| 832 | case IPAC_IDTAG_SERNR: |
| 833 | if (dev->serno) |
Stefan Sperling | 961776a | 2018-12-06 13:09:48 +0100 | [diff] [blame] | 834 | osmo_strlcpy(str, dev->serno, sizeof(str)); |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 835 | break; |
| 836 | default: |
| 837 | LOGP(DLINP, LOGL_NOTICE, |
| 838 | "Unknown ipaccess tag 0x%02x\n", *data); |
| 839 | msgb_free(nmsg); |
| 840 | return NULL; |
| 841 | } |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 842 | |
| 843 | LOGP(DLINP, LOGL_INFO, " tag %d: %s\n", data[1], str); |
| 844 | tag = msgb_put(nmsg, 3 + strlen(str) + 1); |
| 845 | tag[0] = 0x00; |
| 846 | tag[1] = 1 + strlen(str) + 1; |
| 847 | tag[2] = data[1]; |
| 848 | memcpy(tag + 3, str, strlen(str) + 1); |
| 849 | data += 2; |
| 850 | len -= 2; |
| 851 | } |
| 852 | ipa_msg_push_header(nmsg, IPAC_PROTO_IPACCESS); |
| 853 | return nmsg; |
| 854 | } |
| 855 | |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 856 | static struct msgb *ipa_bts_id_ack(void) |
| 857 | { |
| 858 | struct msgb *nmsg2; |
| 859 | |
Pablo Neira Ayuso | 88136fc | 2011-07-08 16:21:55 +0200 | [diff] [blame] | 860 | nmsg2 = ipa_msg_alloc(0); |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 861 | if (!nmsg2) |
| 862 | return NULL; |
| 863 | |
| 864 | *msgb_put(nmsg2, 1) = IPAC_MSGT_ID_ACK; |
Pablo Neira Ayuso | 88136fc | 2011-07-08 16:21:55 +0200 | [diff] [blame] | 865 | ipa_msg_push_header(nmsg2, IPAC_PROTO_IPACCESS); |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 866 | |
| 867 | return nmsg2; |
| 868 | } |
| 869 | |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 870 | static void ipaccess_bts_updown_cb(struct ipa_client_conn *link, int up) |
| 871 | { |
| 872 | struct e1inp_line *line = link->line; |
| 873 | |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 874 | if (up) { |
| 875 | struct osmo_fsm_inst *ka_fsm = ipaccess_line_ts(link->ofd, line)->driver.ipaccess.ka_fsm; |
| 876 | |
| 877 | update_fd_settings(line, link->ofd->fd); |
| 878 | if (ka_fsm && line->ipa_kap) |
| 879 | ipa_keepalive_fsm_start(ka_fsm); |
| 880 | return; |
| 881 | } |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 882 | |
| 883 | if (line->ops->sign_link_down) |
| 884 | line->ops->sign_link_down(line); |
| 885 | } |
| 886 | |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 887 | /* handle incoming message to BTS, check if it is an IPA CCM, and if yes, |
| 888 | * handle it accordingly (PING/PONG/ID_REQ/ID_RESP/ID_ACK) */ |
| 889 | int ipaccess_bts_handle_ccm(struct ipa_client_conn *link, |
| 890 | struct ipaccess_unit *dev, struct msgb *msg) |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 891 | { |
| 892 | struct ipaccess_head *hh = (struct ipaccess_head *) msg->data; |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 893 | struct msgb *rmsg; |
| 894 | int ret = 0; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 895 | /* line might not exist if != bsc||bts */ |
| 896 | struct e1inp_line *line = link->line; |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 897 | |
| 898 | /* special handling for IPA CCM. */ |
| 899 | if (hh->proto == IPAC_PROTO_IPACCESS) { |
| 900 | uint8_t msg_type = *(msg->l2h); |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 901 | struct osmo_fsm_inst* ka_fsm = NULL; |
| 902 | |
| 903 | /* peek the pong for our keepalive fsm */ |
| 904 | if (line && msg_type == IPAC_MSGT_PONG) { |
| 905 | ka_fsm = ipaccess_line_ts(link->ofd, line)->driver.ipaccess.ka_fsm; |
| 906 | ipa_keepalive_fsm_pong_received(ka_fsm); |
| 907 | } |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 908 | |
| 909 | /* ping, pong and acknowledgment cases. */ |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 910 | ret = ipa_ccm_rcvmsg_bts_base(msg, link->ofd); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 911 | if (ret < 0) |
| 912 | goto err; |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 913 | |
| 914 | /* this is a request for identification from the BSC. */ |
| 915 | if (msg_type == IPAC_MSGT_ID_GET) { |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 916 | uint8_t *data = msgb_l2(msg); |
| 917 | int len = msgb_l2len(msg); |
Andreas Eversberg | f422a75 | 2014-01-21 14:54:41 +0100 | [diff] [blame] | 918 | int trx_nr = 0; |
| 919 | |
| 920 | if (link->ofd->priv_nr >= E1INP_SIGN_RSL) |
| 921 | trx_nr = link->ofd->priv_nr - E1INP_SIGN_RSL; |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 922 | |
Vadim Yanitskiy | 69ae238 | 2019-12-02 02:42:43 +0700 | [diff] [blame] | 923 | LOGP(DLINP, LOGL_NOTICE, "received ID_GET for unit ID %u/%u/%u\n", |
Pau Espin Pedrol | dd95eb6 | 2018-10-02 20:05:28 +0200 | [diff] [blame] | 924 | dev->site_id, dev->bts_id, trx_nr); |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 925 | rmsg = ipa_bts_id_resp(dev, data + 1, len - 1, trx_nr); |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 926 | ret = ipa_send(link->ofd->fd, rmsg->data, rmsg->len); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 927 | if (ret != rmsg->len) { |
| 928 | LOGP(DLINP, LOGL_ERROR, "cannot send ID_RESP " |
| 929 | "message. Reason: %s\n", strerror(errno)); |
| 930 | goto err_rmsg; |
| 931 | } |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 932 | msgb_free(rmsg); |
| 933 | |
| 934 | /* send ID_ACK. */ |
| 935 | rmsg = ipa_bts_id_ack(); |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 936 | ret = ipa_send(link->ofd->fd, rmsg->data, rmsg->len); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 937 | if (ret != rmsg->len) { |
| 938 | LOGP(DLINP, LOGL_ERROR, "cannot send ID_ACK " |
| 939 | "message. Reason: %s\n", strerror(errno)); |
| 940 | goto err_rmsg; |
| 941 | } |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 942 | msgb_free(rmsg); |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 943 | } |
| 944 | return 1; |
| 945 | } |
Harald Welte | 6eddd47 | 2013-06-30 20:18:53 +0200 | [diff] [blame] | 946 | |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 947 | return 0; |
| 948 | |
| 949 | err_rmsg: |
| 950 | msgb_free(rmsg); |
| 951 | err: |
| 952 | ipa_client_conn_close(link); |
| 953 | return -1; |
| 954 | } |
| 955 | |
| 956 | static int ipaccess_bts_read_cb(struct ipa_client_conn *link, struct msgb *msg) |
| 957 | { |
| 958 | struct ipaccess_head *hh = (struct ipaccess_head *) msg->data; |
| 959 | struct e1inp_ts *e1i_ts = NULL; |
| 960 | struct e1inp_sign_link *sign_link; |
Neels Hofmeyr | fe67311 | 2018-08-24 17:43:45 +0200 | [diff] [blame] | 961 | uint8_t msg_type = *(msg->l2h); |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 962 | int ret = 0; |
| 963 | |
| 964 | /* special handling for IPA CCM. */ |
| 965 | if (hh->proto == IPAC_PROTO_IPACCESS) { |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 966 | /* this is a request for identification from the BSC. */ |
| 967 | if (msg_type == IPAC_MSGT_ID_GET) { |
| 968 | if (!link->line->ops->sign_link_up) { |
| 969 | LOGP(DLINP, LOGL_ERROR, |
| 970 | "Unable to set signal link, " |
| 971 | "closing socket.\n"); |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 972 | goto err; |
| 973 | } |
| 974 | } |
| 975 | } |
| 976 | |
| 977 | /* core CCM handling */ |
| 978 | ret = ipaccess_bts_handle_ccm(link, link->line->ops->cfg.ipa.dev, msg); |
| 979 | if (ret < 0) |
| 980 | goto err; |
| 981 | |
| 982 | if (ret == 1 && hh->proto == IPAC_PROTO_IPACCESS) { |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 983 | if (msg_type == IPAC_MSGT_ID_GET) { |
Harald Welte | 6eddd47 | 2013-06-30 20:18:53 +0200 | [diff] [blame] | 984 | sign_link = link->line->ops->sign_link_up(msg, |
| 985 | link->line, |
| 986 | link->ofd->priv_nr); |
| 987 | if (sign_link == NULL) { |
| 988 | LOGP(DLINP, LOGL_ERROR, |
| 989 | "Unable to set signal link, " |
| 990 | "closing socket.\n"); |
Harald Welte | 6eddd47 | 2013-06-30 20:18:53 +0200 | [diff] [blame] | 991 | goto err; |
| 992 | } |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 993 | } |
Pablo Neira Ayuso | 84e5cb9 | 2012-08-23 23:41:54 +0200 | [diff] [blame] | 994 | msgb_free(msg); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 995 | return ret; |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 996 | } else if (link->port == IPA_TCP_PORT_OML) |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 997 | e1i_ts = e1inp_line_ipa_oml_ts(link->line); |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 998 | else if (link->port == IPA_TCP_PORT_RSL) |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 999 | e1i_ts = e1inp_line_ipa_rsl_ts(link->line, link->ofd->priv_nr - E1INP_SIGN_RSL); |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 1000 | |
Pablo Neira Ayuso | b948701 | 2013-07-05 14:38:43 +0200 | [diff] [blame] | 1001 | OSMO_ASSERT(e1i_ts != NULL); |
| 1002 | |
Neels Hofmeyr | fe67311 | 2018-08-24 17:43:45 +0200 | [diff] [blame] | 1003 | if (e1i_ts->type == E1INP_TS_TYPE_NONE) { |
| 1004 | LOGP(DLINP, LOGL_ERROR, "Signalling link not initialized. Discarding." |
| 1005 | " port=%u msg_type=%u\n", link->port, msg_type); |
Neels Hofmeyr | fe67311 | 2018-08-24 17:43:45 +0200 | [diff] [blame] | 1006 | goto err; |
| 1007 | } |
Pau Espin Pedrol | 7ad2b15 | 2018-08-28 17:37:59 +0200 | [diff] [blame] | 1008 | |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 1009 | /* look up for some existing signaling link. */ |
| 1010 | sign_link = e1inp_lookup_sign_link(e1i_ts, hh->proto, 0); |
| 1011 | if (sign_link == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1012 | LOGP(DLINP, LOGL_ERROR, "no matching signalling link for " |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 1013 | "hh->proto=0x%02x\n", hh->proto); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 1014 | goto err; |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 1015 | } |
| 1016 | msg->dst = sign_link; |
| 1017 | |
| 1018 | /* XXX better use e1inp_ts_rx? */ |
Pablo Neira Ayuso | f163d23 | 2011-06-25 18:42:55 +0200 | [diff] [blame] | 1019 | if (!link->line->ops->sign_link) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1020 | LOGP(DLINP, LOGL_ERROR, "Fix your application, " |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 1021 | "no action set for signalling messages.\n"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 1022 | goto err; |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 1023 | } |
Pau Espin Pedrol | ed122f3 | 2018-08-28 18:25:02 +0200 | [diff] [blame] | 1024 | return link->line->ops->sign_link(msg); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 1025 | |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 1026 | err: |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 1027 | ipa_client_conn_close(link); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 1028 | msgb_free(msg); |
Pau Espin Pedrol | 7ad2b15 | 2018-08-28 17:37:59 +0200 | [diff] [blame] | 1029 | return -EBADF; |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 1030 | } |
| 1031 | |
Pablo Neira Ayuso | d621640 | 2011-08-31 16:47:44 +0200 | [diff] [blame] | 1032 | struct ipaccess_line { |
Oliver Smith | 65ae42c | 2020-01-22 11:24:52 +0100 | [diff] [blame] | 1033 | bool line_already_initialized; |
Pau Espin Pedrol | 92aee51 | 2021-10-11 12:14:36 +0200 | [diff] [blame] | 1034 | struct ipa_client_conn *ipa_cli[NUM_E1_TS]; /* 0=OML, 1+N=TRX_N */ |
Pablo Neira Ayuso | d621640 | 2011-08-31 16:47:44 +0200 | [diff] [blame] | 1035 | }; |
| 1036 | |
Pablo Neira Ayuso | 4e862cb | 2011-08-19 18:43:38 +0200 | [diff] [blame] | 1037 | static int ipaccess_line_update(struct e1inp_line *line) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1038 | { |
| 1039 | int ret = -ENOENT; |
Pablo Neira Ayuso | d621640 | 2011-08-31 16:47:44 +0200 | [diff] [blame] | 1040 | struct ipaccess_line *il; |
| 1041 | |
| 1042 | if (!line->driver_data) |
| 1043 | line->driver_data = talloc_zero(line, struct ipaccess_line); |
| 1044 | |
| 1045 | if (!line->driver_data) { |
| 1046 | LOGP(DLINP, LOGL_ERROR, "ipaccess: OOM in line update\n"); |
| 1047 | return -ENOMEM; |
| 1048 | } |
| 1049 | il = line->driver_data; |
| 1050 | |
Pablo Neira Ayuso | 4e862cb | 2011-08-19 18:43:38 +0200 | [diff] [blame] | 1051 | switch(line->ops->cfg.ipa.role) { |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1052 | case E1INP_LINE_R_BSC: { |
Pau Espin Pedrol | d2d28d8 | 2021-09-29 14:15:56 +0200 | [diff] [blame] | 1053 | /* We only initialize this line once. */ |
| 1054 | if (il->line_already_initialized) |
| 1055 | return 0; |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1056 | struct ipa_server_link *oml_link, *rsl_link; |
Max | 4c4a1c2 | 2016-12-30 15:10:47 +0100 | [diff] [blame] | 1057 | const char *ipa = e1inp_ipa_get_bind_addr(); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1058 | |
Max | 4c4a1c2 | 2016-12-30 15:10:47 +0100 | [diff] [blame] | 1059 | LOGP(DLINP, LOGL_NOTICE, "enabling ipaccess BSC mode on %s " |
| 1060 | "with OML %u and RSL %u TCP ports\n", ipa, |
| 1061 | IPA_TCP_PORT_OML, IPA_TCP_PORT_RSL); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1062 | |
Max | 4c4a1c2 | 2016-12-30 15:10:47 +0100 | [diff] [blame] | 1063 | oml_link = ipa_server_link_create(tall_ipa_ctx, line, ipa, |
Neels Hofmeyr | 0db1d43 | 2016-02-22 13:29:09 +0100 | [diff] [blame] | 1064 | IPA_TCP_PORT_OML, |
Pablo Neira Ayuso | e009f4a | 2011-06-23 13:36:34 +0200 | [diff] [blame] | 1065 | ipaccess_bsc_oml_cb, NULL); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1066 | if (oml_link == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1067 | LOGP(DLINP, LOGL_ERROR, "cannot create OML " |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1068 | "BSC link: %s\n", strerror(errno)); |
| 1069 | return -ENOMEM; |
Pablo Neira Ayuso | f67471f | 2011-06-07 11:25:49 +0200 | [diff] [blame] | 1070 | } |
Harald Welte | 4154755 | 2021-04-28 18:23:21 +0200 | [diff] [blame] | 1071 | oml_link->dscp = g_e1inp_ipaccess_pars.oml.dscp; |
| 1072 | oml_link->priority = g_e1inp_ipaccess_pars.oml.priority; |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1073 | if (ipa_server_link_open(oml_link) < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1074 | LOGP(DLINP, LOGL_ERROR, "cannot open OML BSC link: %s\n", |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1075 | strerror(errno)); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1076 | ipa_server_link_destroy(oml_link); |
| 1077 | return -EIO; |
Pablo Neira Ayuso | f67471f | 2011-06-07 11:25:49 +0200 | [diff] [blame] | 1078 | } |
Max | 4c4a1c2 | 2016-12-30 15:10:47 +0100 | [diff] [blame] | 1079 | rsl_link = ipa_server_link_create(tall_ipa_ctx, line, ipa, |
Neels Hofmeyr | 0db1d43 | 2016-02-22 13:29:09 +0100 | [diff] [blame] | 1080 | IPA_TCP_PORT_RSL, |
Pablo Neira Ayuso | e009f4a | 2011-06-23 13:36:34 +0200 | [diff] [blame] | 1081 | ipaccess_bsc_rsl_cb, NULL); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1082 | if (rsl_link == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1083 | LOGP(DLINP, LOGL_ERROR, "cannot create RSL " |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1084 | "BSC link: %s\n", strerror(errno)); |
| 1085 | return -ENOMEM; |
| 1086 | } |
Harald Welte | 4154755 | 2021-04-28 18:23:21 +0200 | [diff] [blame] | 1087 | rsl_link->dscp = g_e1inp_ipaccess_pars.rsl.dscp; |
| 1088 | rsl_link->priority = g_e1inp_ipaccess_pars.rsl.priority; |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1089 | if (ipa_server_link_open(rsl_link) < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1090 | LOGP(DLINP, LOGL_ERROR, "cannot open RSL BSC link: %s\n", |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1091 | strerror(errno)); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1092 | ipa_server_link_destroy(rsl_link); |
| 1093 | return -EIO; |
| 1094 | } |
| 1095 | ret = 0; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1096 | break; |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1097 | } |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1098 | case E1INP_LINE_R_BTS: { |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1099 | struct ipa_client_conn *link; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 1100 | struct e1inp_ts *e1i_ts; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1101 | |
Max | 4c4a1c2 | 2016-12-30 15:10:47 +0100 | [diff] [blame] | 1102 | LOGP(DLINP, LOGL_NOTICE, "enabling ipaccess BTS mode, " |
| 1103 | "OML connecting to %s:%u\n", line->ops->cfg.ipa.addr, |
| 1104 | IPA_TCP_PORT_OML); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1105 | |
Pau Espin Pedrol | d2d28d8 | 2021-09-29 14:15:56 +0200 | [diff] [blame] | 1106 | /* Drop previous line */ |
Pau Espin Pedrol | 92aee51 | 2021-10-11 12:14:36 +0200 | [diff] [blame] | 1107 | if (il->ipa_cli[0]) { |
| 1108 | ipa_client_conn_close(il->ipa_cli[0]); |
| 1109 | ipa_client_conn_destroy(il->ipa_cli[0]); |
| 1110 | il->ipa_cli[0] = NULL; |
Pau Espin Pedrol | d2d28d8 | 2021-09-29 14:15:56 +0200 | [diff] [blame] | 1111 | } |
| 1112 | |
Pau Espin Pedrol | b6e28bf | 2019-11-08 17:30:28 +0100 | [diff] [blame] | 1113 | link = ipa_client_conn_create2(tall_ipa_ctx, |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 1114 | e1inp_line_ipa_oml_ts(line), |
Pablo Neira Ayuso | 00af772 | 2011-09-08 12:47:06 +0200 | [diff] [blame] | 1115 | E1INP_SIGN_OML, |
Pau Espin Pedrol | b6e28bf | 2019-11-08 17:30:28 +0100 | [diff] [blame] | 1116 | NULL, 0, |
Pablo Neira Ayuso | 4e862cb | 2011-08-19 18:43:38 +0200 | [diff] [blame] | 1117 | line->ops->cfg.ipa.addr, |
| 1118 | IPA_TCP_PORT_OML, |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 1119 | ipaccess_bts_updown_cb, |
Harald Welte | a3e9dd5 | 2013-06-30 14:25:07 +0200 | [diff] [blame] | 1120 | ipaccess_bts_read_cb, |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 1121 | ipaccess_bts_write_cb, |
Harald Welte | 10b4130 | 2013-06-30 14:05:49 +0200 | [diff] [blame] | 1122 | line); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1123 | if (link == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1124 | LOGP(DLINP, LOGL_ERROR, "cannot create OML " |
Pablo Neira Ayuso | 29465d3 | 2011-06-21 14:21:33 +0200 | [diff] [blame] | 1125 | "BTS link: %s\n", strerror(errno)); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1126 | return -ENOMEM; |
| 1127 | } |
Harald Welte | 4154755 | 2021-04-28 18:23:21 +0200 | [diff] [blame] | 1128 | link->dscp = g_e1inp_ipaccess_pars.oml.dscp; |
| 1129 | link->priority = g_e1inp_ipaccess_pars.oml.priority; |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 1130 | if (ipa_client_conn_open(link) < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1131 | LOGP(DLINP, LOGL_ERROR, "cannot open OML BTS link: %s\n", |
Pablo Neira Ayuso | 29465d3 | 2011-06-21 14:21:33 +0200 | [diff] [blame] | 1132 | strerror(errno)); |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 1133 | ipa_client_conn_close(link); |
| 1134 | ipa_client_conn_destroy(link); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1135 | return -EIO; |
| 1136 | } |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 1137 | |
| 1138 | e1i_ts = e1inp_line_ipa_oml_ts(line); |
| 1139 | ipaccess_bts_keepalive_fsm_alloc(e1i_ts, link, "oml_bts_to_bsc"); |
Pau Espin Pedrol | 92aee51 | 2021-10-11 12:14:36 +0200 | [diff] [blame] | 1140 | il->ipa_cli[0] = link; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1141 | ret = 0; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1142 | break; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1143 | } |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1144 | default: |
| 1145 | break; |
| 1146 | } |
Philipp Maier | ea0f1bd | 2021-05-20 21:01:23 +0200 | [diff] [blame] | 1147 | |
| 1148 | il->line_already_initialized = true; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1149 | return ret; |
| 1150 | } |
| 1151 | |
Andreas Eversberg | f422a75 | 2014-01-21 14:54:41 +0100 | [diff] [blame] | 1152 | /* backwards compatibility */ |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1153 | int e1inp_ipa_bts_rsl_connect(struct e1inp_line *line, |
| 1154 | const char *rem_addr, uint16_t rem_port) |
| 1155 | { |
Andreas Eversberg | f422a75 | 2014-01-21 14:54:41 +0100 | [diff] [blame] | 1156 | return e1inp_ipa_bts_rsl_connect_n(line, rem_addr, rem_port, 0); |
| 1157 | } |
| 1158 | |
| 1159 | int e1inp_ipa_bts_rsl_connect_n(struct e1inp_line *line, |
| 1160 | const char *rem_addr, uint16_t rem_port, |
| 1161 | uint8_t trx_nr) |
| 1162 | { |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1163 | struct ipa_client_conn *rsl_link; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 1164 | struct e1inp_ts *e1i_ts = e1inp_line_ipa_rsl_ts(line, trx_nr); |
Pau Espin Pedrol | 92aee51 | 2021-10-11 12:14:36 +0200 | [diff] [blame] | 1165 | struct ipaccess_line *il; |
Pau Espin Pedrol | 57a148f | 2022-09-15 18:54:21 +0200 | [diff] [blame^] | 1166 | int rc; |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1167 | |
Andreas Eversberg | f422a75 | 2014-01-21 14:54:41 +0100 | [diff] [blame] | 1168 | if (E1INP_SIGN_RSL+trx_nr-1 >= NUM_E1_TS) { |
| 1169 | LOGP(DLINP, LOGL_ERROR, "cannot create RSL BTS link: " |
| 1170 | "trx_nr (%d) out of range\n", trx_nr); |
| 1171 | return -EINVAL; |
| 1172 | } |
Andreas Eversberg | f422a75 | 2014-01-21 14:54:41 +0100 | [diff] [blame] | 1173 | |
Pau Espin Pedrol | 57a148f | 2022-09-15 18:54:21 +0200 | [diff] [blame^] | 1174 | /* Drop previous line */ |
| 1175 | if ((rc = e1inp_ipa_bts_rsl_close_n(line, trx_nr)) < 0) |
| 1176 | return rc; |
| 1177 | |
Pau Espin Pedrol | 92aee51 | 2021-10-11 12:14:36 +0200 | [diff] [blame] | 1178 | if (!line->driver_data) |
| 1179 | line->driver_data = talloc_zero(line, struct ipaccess_line); |
| 1180 | il = line->driver_data; |
| 1181 | |
Pau Espin Pedrol | b6e28bf | 2019-11-08 17:30:28 +0100 | [diff] [blame] | 1182 | rsl_link = ipa_client_conn_create2(tall_ipa_ctx, |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 1183 | e1inp_line_ipa_rsl_ts(line, trx_nr), |
Andreas Eversberg | f422a75 | 2014-01-21 14:54:41 +0100 | [diff] [blame] | 1184 | E1INP_SIGN_RSL+trx_nr, |
Pau Espin Pedrol | b6e28bf | 2019-11-08 17:30:28 +0100 | [diff] [blame] | 1185 | NULL, 0, |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1186 | rem_addr, rem_port, |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 1187 | ipaccess_bts_updown_cb, |
Harald Welte | a3e9dd5 | 2013-06-30 14:25:07 +0200 | [diff] [blame] | 1188 | ipaccess_bts_read_cb, |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1189 | ipaccess_bts_write_cb, |
Harald Welte | 10b4130 | 2013-06-30 14:05:49 +0200 | [diff] [blame] | 1190 | line); |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1191 | if (rsl_link == NULL) { |
| 1192 | LOGP(DLINP, LOGL_ERROR, "cannot create RSL " |
| 1193 | "BTS link: %s\n", strerror(errno)); |
| 1194 | return -ENOMEM; |
| 1195 | } |
Harald Welte | 4154755 | 2021-04-28 18:23:21 +0200 | [diff] [blame] | 1196 | rsl_link->dscp = g_e1inp_ipaccess_pars.rsl.dscp; |
| 1197 | rsl_link->priority = g_e1inp_ipaccess_pars.rsl.priority; |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1198 | if (ipa_client_conn_open(rsl_link) < 0) { |
| 1199 | LOGP(DLINP, LOGL_ERROR, "cannot open RSL BTS link: %s\n", |
| 1200 | strerror(errno)); |
| 1201 | ipa_client_conn_close(rsl_link); |
| 1202 | ipa_client_conn_destroy(rsl_link); |
| 1203 | return -EIO; |
| 1204 | } |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 1205 | ipaccess_bts_keepalive_fsm_alloc(e1i_ts, rsl_link, "rsl_bts_to_bsc"); |
Pau Espin Pedrol | 92aee51 | 2021-10-11 12:14:36 +0200 | [diff] [blame] | 1206 | il->ipa_cli[1 + trx_nr] = rsl_link; |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1207 | return 0; |
| 1208 | } |
| 1209 | |
Pau Espin Pedrol | 57a148f | 2022-09-15 18:54:21 +0200 | [diff] [blame^] | 1210 | /* Close the underlying IPA TCP socket of an RSL link */ |
| 1211 | int e1inp_ipa_bts_rsl_close_n(struct e1inp_line *line, uint8_t trx_nr) |
| 1212 | { |
| 1213 | struct ipaccess_line *il; |
| 1214 | |
| 1215 | if (E1INP_SIGN_RSL+trx_nr-1 >= NUM_E1_TS) { |
| 1216 | LOGP(DLINP, LOGL_ERROR, |
| 1217 | "cannot close RSL BTS link: trx_nr (%d) out of range\n", trx_nr); |
| 1218 | return -EINVAL; |
| 1219 | } |
| 1220 | |
| 1221 | il = line->driver_data; |
| 1222 | if (!il) |
| 1223 | return 0; /* Nothing to do, no lines created */ |
| 1224 | |
| 1225 | if (il->ipa_cli[1 + trx_nr]) { |
| 1226 | ipa_client_conn_close(il->ipa_cli[1 + trx_nr]); |
| 1227 | ipa_client_conn_destroy(il->ipa_cli[1 + trx_nr]); |
| 1228 | il->ipa_cli[1 + trx_nr] = NULL; |
| 1229 | } |
| 1230 | return 0; |
| 1231 | } |
| 1232 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1233 | void e1inp_ipaccess_init(void) |
| 1234 | { |
Pablo Neira Ayuso | 54b4979 | 2011-06-07 12:15:26 +0200 | [diff] [blame] | 1235 | tall_ipa_ctx = talloc_named_const(libosmo_abis_ctx, 1, "ipa"); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1236 | e1inp_driver_register(&ipaccess_driver); |
| 1237 | } |
Neels Hofmeyr | 0db1d43 | 2016-02-22 13:29:09 +0100 | [diff] [blame] | 1238 | |
| 1239 | void e1inp_ipa_set_bind_addr(const char *ip_bind_addr) |
| 1240 | { |
| 1241 | talloc_free((char*)ipaccess_driver.bind_addr); |
| 1242 | ipaccess_driver.bind_addr = NULL; |
| 1243 | |
| 1244 | if (ip_bind_addr) |
| 1245 | ipaccess_driver.bind_addr = talloc_strdup(tall_ipa_ctx, |
| 1246 | ip_bind_addr); |
| 1247 | } |
| 1248 | |
| 1249 | const char *e1inp_ipa_get_bind_addr(void) |
| 1250 | { |
| 1251 | return ipaccess_driver.bind_addr? |
| 1252 | ipaccess_driver.bind_addr |
| 1253 | : "0.0.0.0"; |
| 1254 | } |