Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1 | /* OpenBSC Abis input driver for ip.access */ |
| 2 | |
| 3 | /* (C) 2009 by Harald Welte <laforge@gnumonks.org> |
| 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> |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 53 | |
Pablo Neira Ayuso | 54b4979 | 2011-06-07 12:15:26 +0200 | [diff] [blame] | 54 | static void *tall_ipa_ctx; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 55 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 56 | #define TS1_ALLOC_SIZE 900 |
| 57 | |
Daniel Willmann | 8598072 | 2014-01-09 14:30:55 +0100 | [diff] [blame] | 58 | #define DEFAULT_TCP_KEEPALIVE_IDLE_TIMEOUT 30 |
| 59 | #define DEFAULT_TCP_KEEPALIVE_INTERVAL 3 |
| 60 | #define DEFAULT_TCP_KEEPALIVE_RETRY_COUNT 10 |
| 61 | |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 62 | static inline struct e1inp_ts *ipaccess_line_ts(struct osmo_fd *bfd, struct e1inp_line *line) |
| 63 | { |
| 64 | if (bfd->priv_nr == E1INP_SIGN_OML) |
| 65 | return e1inp_line_ipa_oml_ts(line); |
| 66 | else |
| 67 | return e1inp_line_ipa_rsl_ts(line, bfd->priv_nr - E1INP_SIGN_RSL); |
| 68 | } |
| 69 | |
| 70 | static inline void ipaccess_keepalive_fsm_cleanup(struct e1inp_ts *e1i_ts) |
| 71 | { |
| 72 | struct osmo_fsm_inst *ka_fsm; |
| 73 | |
| 74 | ka_fsm = e1i_ts->driver.ipaccess.ka_fsm; |
| 75 | if (ka_fsm) { |
| 76 | ipa_keepalive_fsm_stop(ka_fsm); |
| 77 | e1i_ts->driver.ipaccess.ka_fsm = NULL; |
| 78 | } |
| 79 | } |
| 80 | |
Harald Welte | 10b4130 | 2013-06-30 14:05:49 +0200 | [diff] [blame] | 81 | 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] | 82 | { |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 83 | int ret = 1; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 84 | struct e1inp_ts *e1i_ts = ipaccess_line_ts(bfd, line); |
| 85 | |
| 86 | ipaccess_keepalive_fsm_cleanup(e1i_ts); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 87 | |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 88 | /* Error case: we did not see any ID_RESP yet for this socket. */ |
| 89 | if (bfd->fd != -1) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 90 | LOGP(DLINP, LOGL_ERROR, "Forcing socket shutdown with " |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 91 | "no signal link set\n"); |
Pablo Neira Ayuso | 9621b41 | 2011-07-07 16:19:21 +0200 | [diff] [blame] | 92 | osmo_fd_unregister(bfd); |
| 93 | close(bfd->fd); |
| 94 | bfd->fd = -1; |
Pau Espin Pedrol | b8ea0ff | 2020-07-14 13:28:27 +0200 | [diff] [blame^] | 95 | /* This is BSC code, ipaccess_drop() is only called for |
| 96 | accepted() sockets, hence the bfd holds a reference to |
| 97 | e1inp_line in ->data that needs to be released */ |
| 98 | OSMO_ASSERT(bfd->data == line); |
| 99 | bfd->data = NULL; |
| 100 | e1inp_line_put2(line, "ipa_bfd"); |
| 101 | |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 102 | ret = -ENOENT; |
Pablo Neira Ayuso | 9621b41 | 2011-07-07 16:19:21 +0200 | [diff] [blame] | 103 | } |
Pablo Neira Ayuso | 6cc3f92 | 2012-08-22 13:57:58 +0200 | [diff] [blame] | 104 | |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 105 | msgb_free(e1i_ts->pending_msg); |
| 106 | e1i_ts->pending_msg = NULL; |
| 107 | |
Pablo Neira Ayuso | 6cc3f92 | 2012-08-22 13:57:58 +0200 | [diff] [blame] | 108 | /* e1inp_sign_link_destroy releases the socket descriptors for us. */ |
| 109 | line->ops->sign_link_down(line); |
| 110 | |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 111 | return ret; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 112 | } |
| 113 | |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 114 | static void ipa_bsc_keepalive_write_server_cb(struct osmo_fsm_inst *fi, void *conn, struct msgb *msg) |
| 115 | { |
| 116 | struct osmo_fd *bfd = (struct osmo_fd *)conn; |
| 117 | write(bfd->fd, msg->data, msg->len); |
| 118 | msgb_free(msg); |
| 119 | } |
| 120 | |
| 121 | static int ipa_bsc_keepalive_timeout_cb(struct osmo_fsm_inst *fi, void *data) |
| 122 | { |
| 123 | struct osmo_fd *bfd = (struct osmo_fd *)data; |
| 124 | |
| 125 | if (bfd->fd == -1) |
| 126 | return 1; |
| 127 | |
| 128 | ipaccess_drop(bfd, (struct e1inp_line *)bfd->data); |
| 129 | return 1; |
| 130 | } |
| 131 | |
| 132 | static void ipaccess_bsc_keepalive_fsm_alloc(struct e1inp_ts *e1i_ts, struct osmo_fd *bfd, const char *id) |
| 133 | { |
| 134 | struct e1inp_line *line = e1i_ts->line; |
| 135 | struct osmo_fsm_inst *ka_fsm; |
| 136 | |
| 137 | ipaccess_keepalive_fsm_cleanup(e1i_ts); |
| 138 | if (!line->ipa_kap) |
| 139 | return; |
| 140 | |
| 141 | ka_fsm = ipa_generic_conn_alloc_keepalive_fsm(tall_ipa_ctx, bfd, line->ipa_kap, id); |
| 142 | e1i_ts->driver.ipaccess.ka_fsm = ka_fsm; |
| 143 | if (!ka_fsm) |
| 144 | return; |
| 145 | |
| 146 | ipa_keepalive_fsm_set_timeout_cb(ka_fsm, ipa_bsc_keepalive_timeout_cb); |
| 147 | ipa_keepalive_fsm_set_send_cb(ka_fsm, ipa_bsc_keepalive_write_server_cb); |
| 148 | ipa_keepalive_fsm_start(ka_fsm); |
| 149 | } |
| 150 | |
| 151 | static void ipa_bts_keepalive_write_client_cb(struct osmo_fsm_inst *fi, void *conn, struct msgb *msg) { |
| 152 | struct ipa_client_conn *link = (struct ipa_client_conn *)conn; |
| 153 | int ret = 0; |
| 154 | |
| 155 | ret = ipa_send(link->ofd->fd, msg->data, msg->len); |
| 156 | if (ret != msg->len) { |
| 157 | LOGP(DLINP, LOGL_ERROR, "cannot send message. Reason: %s\n", strerror(errno)); |
| 158 | } |
| 159 | msgb_free(msg); |
| 160 | } |
| 161 | |
| 162 | static void update_fd_settings(struct e1inp_line *line, int fd); |
| 163 | static void ipaccess_bts_updown_cb(struct ipa_client_conn *link, int up); |
| 164 | |
| 165 | static int ipa_bts_keepalive_timeout_cb(struct osmo_fsm_inst *fi, void *conn) { |
| 166 | ipaccess_bts_updown_cb(conn, false); |
| 167 | return 1; |
| 168 | } |
| 169 | |
| 170 | static void ipaccess_bts_keepalive_fsm_alloc(struct e1inp_ts *e1i_ts, struct ipa_client_conn *client, const char *id) |
| 171 | { |
| 172 | struct e1inp_line *line = e1i_ts->line; |
| 173 | struct osmo_fsm_inst *ka_fsm; |
| 174 | |
| 175 | ipaccess_keepalive_fsm_cleanup(e1i_ts); |
| 176 | if (!line->ipa_kap) |
| 177 | return; |
| 178 | |
| 179 | ka_fsm = ipa_client_conn_alloc_keepalive_fsm(client, line->ipa_kap, id); |
| 180 | e1i_ts->driver.ipaccess.ka_fsm = ka_fsm; |
| 181 | if (!ka_fsm) |
| 182 | return; |
| 183 | |
| 184 | ipa_keepalive_fsm_set_timeout_cb(ka_fsm, ipa_bts_keepalive_timeout_cb); |
| 185 | ipa_keepalive_fsm_set_send_cb(ka_fsm, ipa_bts_keepalive_write_client_cb); |
| 186 | } |
| 187 | |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 188 | /* Returns -1 on error, and 0 or 1 on success. If -1 or 1 is returned, line has |
| 189 | * been released and should not be used anymore by the caller. */ |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 190 | static int ipaccess_rcvmsg(struct e1inp_line *line, struct msgb *msg, |
| 191 | struct osmo_fd *bfd) |
| 192 | { |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 193 | struct tlv_parsed tlvp; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 194 | uint8_t msg_type = *(msg->l2h); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 195 | struct ipaccess_unit unit_data = {}; |
| 196 | struct e1inp_sign_link *sign_link; |
| 197 | char *unitid; |
| 198 | int len, ret; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 199 | struct e1inp_ts *e1i_ts; |
| 200 | struct osmo_fsm_inst *ka_fsm; |
| 201 | |
| 202 | /* peek the pong for our keepalive fsm */ |
| 203 | e1i_ts = ipaccess_line_ts(bfd, line); |
| 204 | ka_fsm = e1i_ts->driver.ipaccess.ka_fsm; |
| 205 | if (ka_fsm && msg_type == IPAC_MSGT_PONG) |
| 206 | ipa_keepalive_fsm_pong_received(ka_fsm); |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 207 | |
Pablo Neira Ayuso | eb43413 | 2011-07-07 19:19:46 +0200 | [diff] [blame] | 208 | /* Handle IPA PING, PONG and ID_ACK messages. */ |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 209 | ret = ipa_ccm_rcvmsg_base(msg, bfd); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 210 | switch(ret) { |
| 211 | case -1: |
| 212 | /* error in IPA control message handling */ |
| 213 | goto err; |
| 214 | case 1: |
| 215 | /* this is an IPA control message, skip further processing */ |
Pablo Neira Ayuso | eb43413 | 2011-07-07 19:19:46 +0200 | [diff] [blame] | 216 | return 0; |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 217 | case 0: |
| 218 | /* this is not an IPA control message, continue */ |
| 219 | break; |
| 220 | default: |
| 221 | LOGP(DLINP, LOGL_ERROR, "Unexpected return from " |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 222 | "ipa_ccm_rcvmsg_base " |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 223 | "(ret=%d)\n", ret); |
| 224 | goto err; |
| 225 | } |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 226 | |
| 227 | switch (msg_type) { |
| 228 | case IPAC_MSGT_ID_RESP: |
Pau Espin Pedrol | 30e80d5 | 2020-07-14 13:23:05 +0200 | [diff] [blame] | 229 | DEBUGP(DLMI, "ID_RESP "); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 230 | /* parse tags, search for Unit ID */ |
Harald Welte | 82eb55e | 2018-08-01 13:22:55 +0200 | [diff] [blame] | 231 | 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] | 232 | DEBUGPC(DLMI, "\n"); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 233 | if (ret < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 234 | LOGP(DLINP, LOGL_ERROR, "IPA response message " |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 235 | "with malformed TLVs\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 236 | goto err; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 237 | } |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 238 | if (!TLVP_PRESENT(&tlvp, IPAC_IDTAG_UNIT)) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 239 | LOGP(DLINP, LOGL_ERROR, "IPA response message " |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 240 | "without unit ID\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 241 | goto err; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 242 | |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 243 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 244 | len = TLVP_LEN(&tlvp, IPAC_IDTAG_UNIT); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 245 | if (len < 1) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 246 | LOGP(DLINP, LOGL_ERROR, "IPA response message " |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 247 | "with too small unit ID\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 248 | goto err; |
| 249 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 250 | unitid = (char *) TLVP_VAL(&tlvp, IPAC_IDTAG_UNIT); |
| 251 | unitid[len - 1] = '\0'; |
Vadim Yanitskiy | 1c94f6a | 2019-12-02 02:16:07 +0700 | [diff] [blame] | 252 | ret = ipa_parse_unitid(unitid, &unit_data); |
| 253 | if (ret) { |
| 254 | LOGP(DLINP, LOGL_ERROR, "Failed to parse unit ID '%s'\n", unitid); |
| 255 | goto err; |
| 256 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 257 | |
Pablo Neira Ayuso | f163d23 | 2011-06-25 18:42:55 +0200 | [diff] [blame] | 258 | if (!line->ops->sign_link_up) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 259 | LOGP(DLINP, LOGL_ERROR, |
Pablo Neira Ayuso | cd8d2e5 | 2011-07-02 17:05:21 +0200 | [diff] [blame] | 260 | "Unable to set signal link, closing socket.\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 261 | goto err; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 262 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 263 | /* the BSC creates the new sign links at this stage. */ |
| 264 | if (bfd->priv_nr == E1INP_SIGN_OML) { |
| 265 | sign_link = |
| 266 | line->ops->sign_link_up(&unit_data, line, |
| 267 | E1INP_SIGN_OML); |
| 268 | if (sign_link == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 269 | LOGP(DLINP, LOGL_ERROR, |
Pablo Neira Ayuso | cd8d2e5 | 2011-07-02 17:05:21 +0200 | [diff] [blame] | 270 | "Unable to set signal link, " |
| 271 | "closing socket.\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 272 | goto err; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 273 | } |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 274 | |
| 275 | ipaccess_bsc_keepalive_fsm_alloc(e1i_ts, bfd, "oml_bsc_to_bts"); |
| 276 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 277 | } else if (bfd->priv_nr == E1INP_SIGN_RSL) { |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 278 | struct e1inp_ts *ts; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 279 | struct osmo_fd *newbfd; |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 280 | struct e1inp_line *new_line; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 281 | |
| 282 | sign_link = |
| 283 | line->ops->sign_link_up(&unit_data, line, |
| 284 | E1INP_SIGN_RSL); |
| 285 | if (sign_link == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 286 | LOGP(DLINP, LOGL_ERROR, |
Pablo Neira Ayuso | cd8d2e5 | 2011-07-02 17:05:21 +0200 | [diff] [blame] | 287 | "Unable to set signal link, " |
| 288 | "closing socket.\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 289 | goto err; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 290 | } |
Pablo Neira Ayuso | db1c8a7 | 2011-07-08 15:12:03 +0200 | [diff] [blame] | 291 | /* this is a bugtrap, the BSC should be using the |
| 292 | * virtual E1 line used by OML for this RSL link. */ |
| 293 | if (sign_link->ts->line == line) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 294 | LOGP(DLINP, LOGL_ERROR, |
Pablo Neira Ayuso | db1c8a7 | 2011-07-08 15:12:03 +0200 | [diff] [blame] | 295 | "Fix your BSC, you should use the " |
| 296 | "E1 line used by the OML link for " |
| 297 | "your RSL link.\n"); |
| 298 | return 0; |
| 299 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 300 | /* Finally, we know which OML link is associated with |
| 301 | * this RSL link, attach it to this socket. */ |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 302 | bfd->data = new_line = sign_link->ts->line; |
Pau Espin Pedrol | 5196cd5 | 2020-07-14 17:52:09 +0200 | [diff] [blame] | 303 | e1inp_line_get2(new_line, "ipa_bfd"); |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 304 | 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] | 305 | newbfd = &ts->driver.ipaccess.fd; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 306 | |
| 307 | /* get rid of our old temporary bfd */ |
Pau Espin Pedrol | 56ae85f | 2018-08-22 13:11:19 +0200 | [diff] [blame] | 308 | /* preserve 'newbfd->when' flags potentially set by sign_link_up() */ |
Pau Espin Pedrol | 67902bb | 2018-08-23 14:35:08 +0200 | [diff] [blame] | 309 | osmo_fd_setup(newbfd, bfd->fd, newbfd->when | bfd->when, bfd->cb, |
Pau Espin Pedrol | 56ae85f | 2018-08-22 13:11:19 +0200 | [diff] [blame] | 310 | bfd->data, E1INP_SIGN_RSL + unit_data.trx_id); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 311 | osmo_fd_unregister(bfd); |
| 312 | bfd->fd = -1; |
Harald Welte | ae3a993 | 2016-11-26 09:25:23 +0100 | [diff] [blame] | 313 | ret = osmo_fd_register(newbfd); |
| 314 | if (ret < 0) { |
| 315 | LOGP(DLINP, LOGL_ERROR, |
| 316 | "could not register FD\n"); |
| 317 | goto err; |
| 318 | } |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 319 | /* now we can release the dummy RSL line. */ |
Pau Espin Pedrol | 5196cd5 | 2020-07-14 17:52:09 +0200 | [diff] [blame] | 320 | e1inp_line_put2(line, "ipa_bfd"); |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 321 | |
| 322 | e1i_ts = ipaccess_line_ts(newbfd, new_line); |
| 323 | 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] | 324 | return 1; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 325 | } |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 326 | break; |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 327 | default: |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 328 | LOGP(DLINP, LOGL_ERROR, "Unknown IPA message type\n"); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 329 | goto err; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 330 | } |
| 331 | return 0; |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 332 | err: |
| 333 | osmo_fd_unregister(bfd); |
Harald Welte | b4a7db0 | 2019-07-21 11:51:56 +0200 | [diff] [blame] | 334 | if (bfd->fd != -1) { |
| 335 | close(bfd->fd); |
| 336 | bfd->fd = -1; |
| 337 | } |
Pau Espin Pedrol | 5196cd5 | 2020-07-14 17:52:09 +0200 | [diff] [blame] | 338 | e1inp_line_put2(line, "ipa_bfd"); |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 339 | return -1; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 340 | } |
| 341 | |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 342 | /* 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] | 343 | static int handle_ts1_read(struct osmo_fd *bfd) |
| 344 | { |
| 345 | struct e1inp_line *line = bfd->data; |
| 346 | unsigned int ts_nr = bfd->priv_nr; |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 347 | struct e1inp_ts *e1i_ts; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 348 | struct e1inp_sign_link *link; |
| 349 | struct ipaccess_head *hh; |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 350 | struct msgb *msg = NULL; |
Max | c9fa25e | 2017-01-09 13:23:15 +0100 | [diff] [blame] | 351 | int ret, rc; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 352 | |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 353 | e1i_ts = ipaccess_line_ts(bfd, line); |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 354 | 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] | 355 | if (ret < 0) { |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 356 | if (ret == -EAGAIN) |
| 357 | return 0; |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 358 | LOGP(DLINP, LOGL_NOTICE, "Sign link problems, " |
Jacob Erlbeck | 98af3c3 | 2014-03-31 10:53:32 +0200 | [diff] [blame] | 359 | "closing socket. Reason: %s\n", strerror(-ret)); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 360 | goto err; |
| 361 | } else if (ret == 0) { |
| 362 | LOGP(DLINP, LOGL_NOTICE, "Sign link vanished, dead socket\n"); |
| 363 | goto err; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 364 | } |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 365 | 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] | 366 | |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 367 | hh = (struct ipaccess_head *) msg->data; |
| 368 | if (hh->proto == IPAC_PROTO_IPACCESS) { |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 369 | ret = ipaccess_rcvmsg(line, msg, bfd); |
| 370 | /* BIG FAT WARNING: bfd might no longer exist here (ret != 0), |
| 371 | * since ipaccess_rcvmsg() might have free'd it !!! */ |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 372 | msgb_free(msg); |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 373 | return ret != 0 ? -EBADF : 0; |
Holger Hans Peter Freyther | 63ddf46 | 2013-12-28 21:19:19 +0100 | [diff] [blame] | 374 | } else if (e1i_ts->type == E1INP_TS_TYPE_NONE) { |
| 375 | /* this sign link is not know yet.. complain. */ |
| 376 | LOGP(DLINP, LOGL_ERROR, "Timeslot is not configured.\n"); |
Holger Hans Peter Freyther | 63ddf46 | 2013-12-28 21:19:19 +0100 | [diff] [blame] | 377 | goto err_msg; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 378 | } |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 379 | |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 380 | link = e1inp_lookup_sign_link(e1i_ts, hh->proto, 0); |
| 381 | if (!link) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 382 | LOGP(DLINP, LOGL_ERROR, "no matching signalling link for " |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 383 | "hh->proto=0x%02x\n", hh->proto); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 384 | goto err_msg; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 385 | } |
| 386 | msg->dst = link; |
| 387 | |
| 388 | /* XXX better use e1inp_ts_rx? */ |
Pablo Neira Ayuso | f163d23 | 2011-06-25 18:42:55 +0200 | [diff] [blame] | 389 | if (!e1i_ts->line->ops->sign_link) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 390 | LOGP(DLINP, LOGL_ERROR, "Fix your application, " |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 391 | "no action set for signalling messages.\n"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 392 | goto err_msg; |
Pablo Neira Ayuso | 5a4b7c5 | 2011-06-07 14:07:48 +0200 | [diff] [blame] | 393 | } |
Max | c9fa25e | 2017-01-09 13:23:15 +0100 | [diff] [blame] | 394 | rc = e1i_ts->line->ops->sign_link(msg); |
| 395 | if (rc < 0) { |
Pablo Neira Ayuso | a49c24d | 2012-10-16 11:24:08 +0200 | [diff] [blame] | 396 | /* Don't close the signalling link if the upper layers report |
| 397 | * an error, that's too strict. BTW, the signalling layer is |
| 398 | * resposible for releasing the message. |
| 399 | */ |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 400 | LOGP(DLINP, LOGL_ERROR, "Bad signalling message," |
Max | c9fa25e | 2017-01-09 13:23:15 +0100 | [diff] [blame] | 401 | " sign_link returned error: %s.\n", strerror(-rc)); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 402 | } |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 403 | |
Pau Espin Pedrol | ed122f3 | 2018-08-28 18:25:02 +0200 | [diff] [blame] | 404 | return rc; |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 405 | err_msg: |
| 406 | msgb_free(msg); |
Pablo Neira Ayuso | 466c546 | 2011-07-07 19:17:20 +0200 | [diff] [blame] | 407 | err: |
Harald Welte | 10b4130 | 2013-06-30 14:05:49 +0200 | [diff] [blame] | 408 | ipaccess_drop(bfd, line); |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 409 | return -EBADF; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 410 | } |
| 411 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 412 | static int ts_want_write(struct e1inp_ts *e1i_ts) |
| 413 | { |
| 414 | e1i_ts->driver.ipaccess.fd.when |= BSC_FD_WRITE; |
| 415 | |
| 416 | return 0; |
| 417 | } |
| 418 | |
Pablo Neira Ayuso | add3ec8 | 2011-07-05 14:45:46 +0200 | [diff] [blame] | 419 | static void ipaccess_close(struct e1inp_sign_link *sign_link) |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 420 | { |
Pablo Neira Ayuso | add3ec8 | 2011-07-05 14:45:46 +0200 | [diff] [blame] | 421 | struct e1inp_ts *e1i_ts = sign_link->ts; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 422 | struct osmo_fd *bfd = &e1i_ts->driver.ipaccess.fd; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 423 | struct e1inp_line *line = e1i_ts->line; |
| 424 | |
| 425 | /* line might not exist if != bsc||bts */ |
| 426 | if (line) { |
| 427 | /* depending on caller the fsm might be dead */ |
| 428 | struct osmo_fsm_inst* ka_fsm = ipaccess_line_ts(bfd, line)->driver.ipaccess.ka_fsm; |
| 429 | if (ka_fsm) |
| 430 | ipa_keepalive_fsm_stop(ka_fsm); |
| 431 | |
| 432 | } |
| 433 | |
Holger Hans Peter Freyther | 55467f0 | 2011-12-28 19:47:07 +0100 | [diff] [blame] | 434 | return e1inp_close_socket(e1i_ts, sign_link, bfd); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 435 | } |
| 436 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 437 | static void timeout_ts1_write(void *data) |
| 438 | { |
| 439 | struct e1inp_ts *e1i_ts = (struct e1inp_ts *)data; |
| 440 | |
| 441 | /* trigger write of ts1, due to tx delay timer */ |
| 442 | ts_want_write(e1i_ts); |
| 443 | } |
| 444 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 445 | 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] | 446 | { |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 447 | unsigned int ts_nr = bfd->priv_nr; |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 448 | struct e1inp_ts *e1i_ts; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 449 | struct e1inp_sign_link *sign_link; |
| 450 | struct msgb *msg; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 451 | int ret; |
| 452 | |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 453 | e1i_ts = ipaccess_line_ts(bfd, line); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 454 | bfd->when &= ~BSC_FD_WRITE; |
| 455 | |
| 456 | /* get the next msg for this timeslot */ |
| 457 | msg = e1inp_tx_ts(e1i_ts, &sign_link); |
| 458 | if (!msg) { |
| 459 | /* no message after tx delay timer */ |
| 460 | return 0; |
| 461 | } |
| 462 | |
| 463 | switch (sign_link->type) { |
| 464 | case E1INP_SIGN_OML: |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 465 | case E1INP_SIGN_RSL: |
Harald Welte | 46fc7e2 | 2014-08-18 19:04:26 +0200 | [diff] [blame] | 466 | case E1INP_SIGN_OSMO: |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 467 | break; |
| 468 | default: |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 469 | bfd->when |= BSC_FD_WRITE; /* come back for more msg */ |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 470 | ret = -EINVAL; |
| 471 | goto out; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 472 | } |
| 473 | |
| 474 | msg->l2h = msg->data; |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 475 | ipa_prepend_header(msg, sign_link->tei); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 476 | |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 477 | DEBUGP(DLMI, "TX %u: %s\n", ts_nr, osmo_hexdump(msg->l2h, msgb_l2len(msg))); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 478 | |
| 479 | ret = send(bfd->fd, msg->data, msg->len, 0); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 480 | if (ret != msg->len) { |
| 481 | LOGP(DLINP, LOGL_ERROR, "failed to send A-bis IPA signalling " |
| 482 | "message. Reason: %s\n", strerror(errno)); |
| 483 | goto err; |
| 484 | } |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 485 | |
| 486 | /* set tx delay timer for next event */ |
Pablo Neira Ayuso | b26f2fd | 2017-06-07 18:32:13 +0200 | [diff] [blame] | 487 | 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] | 488 | |
| 489 | /* Reducing this might break the nanoBTS 900 init. */ |
| 490 | osmo_timer_schedule(&e1i_ts->sign.tx_timer, 0, e1i_ts->sign.delay); |
| 491 | |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 492 | out: |
| 493 | msgb_free(msg); |
| 494 | return ret; |
| 495 | err: |
Harald Welte | 10b4130 | 2013-06-30 14:05:49 +0200 | [diff] [blame] | 496 | ipaccess_drop(bfd, line); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 497 | msgb_free(msg); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 498 | return ret; |
| 499 | } |
| 500 | |
Pablo Neira Ayuso | 88136fc | 2011-07-08 16:21:55 +0200 | [diff] [blame] | 501 | static int handle_ts1_write(struct osmo_fd *bfd) |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 502 | { |
| 503 | struct e1inp_line *line = bfd->data; |
| 504 | |
| 505 | return __handle_ts1_write(bfd, line); |
| 506 | } |
| 507 | |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 508 | static int ipaccess_bts_write_cb(struct ipa_client_conn *link) |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 509 | { |
| 510 | struct e1inp_line *line = link->line; |
| 511 | |
| 512 | return __handle_ts1_write(link->ofd, line); |
| 513 | } |
| 514 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 515 | /* 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] | 516 | int ipaccess_fd_cb(struct osmo_fd *bfd, unsigned int what) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 517 | { |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 518 | int rc = 0; |
| 519 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 520 | if (what & BSC_FD_READ) |
| 521 | rc = handle_ts1_read(bfd); |
Pau Espin Pedrol | 7edc25d | 2018-05-23 14:57:03 +0200 | [diff] [blame] | 522 | if (rc != -EBADF && (what & BSC_FD_WRITE)) |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 523 | rc = handle_ts1_write(bfd); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 524 | |
| 525 | return rc; |
| 526 | } |
| 527 | |
Pablo Neira Ayuso | 4e862cb | 2011-08-19 18:43:38 +0200 | [diff] [blame] | 528 | static int ipaccess_line_update(struct e1inp_line *line); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 529 | |
| 530 | struct e1inp_driver ipaccess_driver = { |
| 531 | .name = "ipa", |
| 532 | .want_write = ts_want_write, |
| 533 | .line_update = ipaccess_line_update, |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 534 | .close = ipaccess_close, |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 535 | .default_delay = 0, |
Jacob Erlbeck | 8fe1571 | 2014-01-09 14:30:58 +0100 | [diff] [blame] | 536 | .has_keepalive = 1, |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 537 | }; |
| 538 | |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 539 | static void update_fd_settings(struct e1inp_line *line, int fd) |
| 540 | { |
| 541 | int ret; |
| 542 | int val; |
| 543 | |
Jacob Erlbeck | 8fe1571 | 2014-01-09 14:30:58 +0100 | [diff] [blame] | 544 | if (line->keepalive_num_probes) { |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 545 | /* Enable TCP keepalive to find out if the connection is gone */ |
| 546 | val = 1; |
| 547 | ret = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, &val, sizeof(val)); |
| 548 | if (ret < 0) |
| 549 | LOGP(DLINP, LOGL_NOTICE, "Failed to set keepalive: %s\n", |
| 550 | strerror(errno)); |
| 551 | else |
| 552 | LOGP(DLINP, LOGL_NOTICE, "Keepalive is set: %i\n", ret); |
| 553 | |
| 554 | #if defined(TCP_KEEPIDLE) && defined(TCP_KEEPINTVL) && defined(TCP_KEEPCNT) |
| 555 | /* The following options are not portable! */ |
Jacob Erlbeck | 8fe1571 | 2014-01-09 14:30:58 +0100 | [diff] [blame] | 556 | val = line->keepalive_idle_timeout > 0 ? |
| 557 | line->keepalive_idle_timeout : |
| 558 | DEFAULT_TCP_KEEPALIVE_IDLE_TIMEOUT; |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 559 | ret = setsockopt(fd, IPPROTO_TCP, TCP_KEEPIDLE, |
| 560 | &val, sizeof(val)); |
| 561 | if (ret < 0) |
| 562 | LOGP(DLINP, LOGL_NOTICE, |
| 563 | "Failed to set keepalive idle time: %s\n", |
| 564 | strerror(errno)); |
Jacob Erlbeck | 8fe1571 | 2014-01-09 14:30:58 +0100 | [diff] [blame] | 565 | val = line->keepalive_probe_interval > -1 ? |
| 566 | line->keepalive_probe_interval : |
| 567 | DEFAULT_TCP_KEEPALIVE_INTERVAL; |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 568 | ret = setsockopt(fd, IPPROTO_TCP, TCP_KEEPINTVL, |
| 569 | &val, sizeof(val)); |
| 570 | if (ret < 0) |
| 571 | LOGP(DLINP, LOGL_NOTICE, |
| 572 | "Failed to set keepalive interval: %s\n", |
| 573 | strerror(errno)); |
Jacob Erlbeck | 8fe1571 | 2014-01-09 14:30:58 +0100 | [diff] [blame] | 574 | val = line->keepalive_num_probes > 0 ? |
| 575 | line->keepalive_num_probes : |
| 576 | DEFAULT_TCP_KEEPALIVE_RETRY_COUNT; |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 577 | ret = setsockopt(fd, IPPROTO_TCP, TCP_KEEPCNT, |
| 578 | &val, sizeof(val)); |
| 579 | if (ret < 0) |
| 580 | LOGP(DLINP, LOGL_NOTICE, |
| 581 | "Failed to set keepalive count: %s\n", |
| 582 | strerror(errno)); |
Eric Wild | 6eb186c | 2019-06-21 15:26:25 +0200 | [diff] [blame] | 583 | #if defined(TCP_USER_TIMEOUT) |
| 584 | val = 1000 * line->keepalive_num_probes * |
| 585 | line->keepalive_probe_interval + |
| 586 | line->keepalive_idle_timeout; |
| 587 | ret = setsockopt(fd, IPPROTO_TCP, TCP_USER_TIMEOUT, |
| 588 | &val, sizeof(val)); |
| 589 | if (ret < 0) |
| 590 | LOGP(DLINP, LOGL_NOTICE, |
| 591 | "Failed to set user timoeut: %s\n", |
| 592 | strerror(errno)); |
| 593 | #endif |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 594 | #endif |
Holger Hans Peter Freyther | f465a4c | 2014-02-03 09:34:02 +0100 | [diff] [blame] | 595 | } |
Oliver Smith | 62725d0 | 2020-04-17 10:57:46 +0200 | [diff] [blame] | 596 | |
| 597 | val = 1; |
| 598 | ret = setsockopt(fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val)); |
| 599 | if (ret < 0) |
| 600 | 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] | 601 | } |
| 602 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 603 | /* callback of the OML listening filedescriptor */ |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 604 | 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] | 605 | { |
| 606 | int ret; |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 607 | int i; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 608 | struct e1inp_line *line; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 609 | struct e1inp_ts *e1i_ts; |
| 610 | struct osmo_fd *bfd; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 611 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 612 | /* clone virtual E1 line for this new OML link. */ |
Pau Espin Pedrol | 5196cd5 | 2020-07-14 17:52:09 +0200 | [diff] [blame] | 613 | line = e1inp_line_clone(tall_ipa_ctx, link->line, "ipa_bfd"); |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 614 | if (line == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 615 | LOGP(DLINP, LOGL_ERROR, "could not clone E1 line\n"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 616 | return -ENOMEM; |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 617 | } |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 618 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 619 | /* create virrtual E1 timeslots for signalling */ |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 620 | e1inp_ts_config_sign(e1inp_line_ipa_oml_ts(line), line); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 621 | |
| 622 | /* initialize the fds */ |
| 623 | for (i = 0; i < ARRAY_SIZE(line->ts); ++i) |
| 624 | line->ts[i].driver.ipaccess.fd.fd = -1; |
| 625 | |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 626 | e1i_ts = e1inp_line_ipa_oml_ts(line); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 627 | |
Pablo Neira Ayuso | 93c6201 | 2011-06-26 19:12:47 +0200 | [diff] [blame] | 628 | bfd = &e1i_ts->driver.ipaccess.fd; |
Pau Espin Pedrol | 56ae85f | 2018-08-22 13:11:19 +0200 | [diff] [blame] | 629 | osmo_fd_setup(bfd, fd, BSC_FD_READ, ipaccess_fd_cb, line, E1INP_SIGN_OML); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 630 | ret = osmo_fd_register(bfd); |
| 631 | if (ret < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 632 | LOGP(DLINP, LOGL_ERROR, "could not register FD\n"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 633 | goto err_line; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 634 | } |
| 635 | |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 636 | update_fd_settings(line, bfd->fd); |
Daniel Willmann | 8598072 | 2014-01-09 14:30:55 +0100 | [diff] [blame] | 637 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 638 | /* Request ID. FIXME: request LOCATION, HW/SW VErsion, Unit Name, Serno */ |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 639 | ret = ipa_ccm_send_id_req(bfd->fd); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 640 | if (ret < 0) { |
| 641 | LOGP(DLINP, LOGL_ERROR, "could not send ID REQ. Reason: %s\n", |
| 642 | strerror(errno)); |
| 643 | goto err_socket; |
| 644 | } |
| 645 | return ret; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 646 | |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 647 | err_socket: |
| 648 | osmo_fd_unregister(bfd); |
| 649 | err_line: |
| 650 | close(bfd->fd); |
| 651 | bfd->fd = -1; |
Pau Espin Pedrol | 5196cd5 | 2020-07-14 17:52:09 +0200 | [diff] [blame] | 652 | e1inp_line_put2(line, "ipa_bfd"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 653 | return ret; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 654 | } |
| 655 | |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 656 | 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] | 657 | { |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 658 | struct e1inp_line *line; |
| 659 | struct e1inp_ts *e1i_ts; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 660 | struct osmo_fd *bfd; |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 661 | int i, ret; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 662 | |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 663 | /* 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] | 664 | * allocate a temporary E1 line until we have received ID. */ |
Pau Espin Pedrol | 5196cd5 | 2020-07-14 17:52:09 +0200 | [diff] [blame] | 665 | line = e1inp_line_clone(tall_ipa_ctx, link->line, "ipa_bfd"); |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 666 | if (line == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 667 | LOGP(DLINP, LOGL_ERROR, "could not clone E1 line\n"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 668 | return -ENOMEM; |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 669 | } |
| 670 | /* initialize the fds */ |
| 671 | for (i = 0; i < ARRAY_SIZE(line->ts); ++i) |
| 672 | line->ts[i].driver.ipaccess.fd.fd = -1; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 673 | |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 674 | /* we need this to initialize this in case to avoid crashes in case |
| 675 | * 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] | 676 | e1inp_ts_config_sign(e1inp_line_ipa_oml_ts(line), line); |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 677 | |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 678 | e1i_ts = e1inp_line_ipa_rsl_ts(line, 0); |
Pablo Neira Ayuso | 3832c4f | 2011-07-07 17:47:26 +0200 | [diff] [blame] | 679 | |
| 680 | bfd = &e1i_ts->driver.ipaccess.fd; |
Pau Espin Pedrol | 56ae85f | 2018-08-22 13:11:19 +0200 | [diff] [blame] | 681 | osmo_fd_setup(bfd, fd, BSC_FD_READ, ipaccess_fd_cb, line, E1INP_SIGN_RSL); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 682 | ret = osmo_fd_register(bfd); |
| 683 | if (ret < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 684 | LOGP(DLINP, LOGL_ERROR, "could not register FD\n"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 685 | goto err_line; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 686 | } |
| 687 | /* Request ID. FIXME: request LOCATION, HW/SW VErsion, Unit Name, Serno */ |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 688 | ret = ipa_ccm_send_id_req(bfd->fd); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 689 | if (ret < 0) { |
| 690 | LOGP(DLINP, LOGL_ERROR, "could not send ID REQ. Reason: %s\n", |
| 691 | strerror(errno)); |
| 692 | goto err_socket; |
| 693 | } |
Jacob Erlbeck | a4ec51e | 2014-01-09 14:30:56 +0100 | [diff] [blame] | 694 | update_fd_settings(line, bfd->fd); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 695 | return ret; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 696 | |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 697 | err_socket: |
| 698 | osmo_fd_unregister(bfd); |
| 699 | err_line: |
| 700 | close(bfd->fd); |
| 701 | bfd->fd = -1; |
Pau Espin Pedrol | 5196cd5 | 2020-07-14 17:52:09 +0200 | [diff] [blame] | 702 | e1inp_line_put2(line, "ipa_bfd"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 703 | return ret; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 704 | } |
| 705 | |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 706 | #define IPA_STRING_MAX 64 |
| 707 | |
| 708 | static struct msgb * |
Max | 7139352 | 2018-01-08 15:42:00 +0100 | [diff] [blame] | 709 | 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] | 710 | { |
| 711 | struct msgb *nmsg; |
| 712 | char str[IPA_STRING_MAX]; |
| 713 | uint8_t *tag; |
| 714 | |
| 715 | memset(str, 0, sizeof(str)); |
| 716 | |
| 717 | nmsg = ipa_msg_alloc(0); |
| 718 | if (!nmsg) |
| 719 | return NULL; |
| 720 | |
| 721 | *msgb_put(nmsg, 1) = IPAC_MSGT_ID_RESP; |
| 722 | while (len) { |
| 723 | if (len < 2) { |
| 724 | LOGP(DLINP, LOGL_NOTICE, |
| 725 | "Short read of ipaccess tag\n"); |
| 726 | msgb_free(nmsg); |
| 727 | return NULL; |
| 728 | } |
| 729 | switch (data[1]) { |
| 730 | case IPAC_IDTAG_UNIT: |
| 731 | snprintf(str, sizeof(str), "%u/%u/%u", |
| 732 | dev->site_id, dev->bts_id, trx_nr); |
| 733 | break; |
| 734 | case IPAC_IDTAG_MACADDR: |
| 735 | snprintf(str, sizeof(str), |
| 736 | "%02x:%02x:%02x:%02x:%02x:%02x", |
| 737 | dev->mac_addr[0], dev->mac_addr[1], |
| 738 | dev->mac_addr[2], dev->mac_addr[3], |
| 739 | dev->mac_addr[4], dev->mac_addr[5]); |
| 740 | break; |
| 741 | case IPAC_IDTAG_LOCATION1: |
| 742 | if (dev->location1) |
Stefan Sperling | 961776a | 2018-12-06 13:09:48 +0100 | [diff] [blame] | 743 | osmo_strlcpy(str, dev->location1, sizeof(str)); |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 744 | break; |
| 745 | case IPAC_IDTAG_LOCATION2: |
| 746 | if (dev->location2) |
Stefan Sperling | 961776a | 2018-12-06 13:09:48 +0100 | [diff] [blame] | 747 | osmo_strlcpy(str, dev->location2, sizeof(str)); |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 748 | break; |
| 749 | case IPAC_IDTAG_EQUIPVERS: |
| 750 | if (dev->equipvers) |
Stefan Sperling | 961776a | 2018-12-06 13:09:48 +0100 | [diff] [blame] | 751 | osmo_strlcpy(str, dev->equipvers, sizeof(str)); |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 752 | break; |
| 753 | case IPAC_IDTAG_SWVERSION: |
| 754 | if (dev->swversion) |
Neels Hofmeyr | 4c57eef | 2018-07-26 17:28:24 +0200 | [diff] [blame] | 755 | osmo_strlcpy(str, dev->swversion, sizeof(str)); |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 756 | break; |
| 757 | case IPAC_IDTAG_UNITNAME: |
| 758 | snprintf(str, sizeof(str), |
| 759 | "%s-%02x-%02x-%02x-%02x-%02x-%02x", |
| 760 | dev->unit_name, |
| 761 | dev->mac_addr[0], dev->mac_addr[1], |
| 762 | dev->mac_addr[2], dev->mac_addr[3], |
| 763 | dev->mac_addr[4], dev->mac_addr[5]); |
| 764 | break; |
| 765 | case IPAC_IDTAG_SERNR: |
| 766 | if (dev->serno) |
Stefan Sperling | 961776a | 2018-12-06 13:09:48 +0100 | [diff] [blame] | 767 | osmo_strlcpy(str, dev->serno, sizeof(str)); |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 768 | break; |
| 769 | default: |
| 770 | LOGP(DLINP, LOGL_NOTICE, |
| 771 | "Unknown ipaccess tag 0x%02x\n", *data); |
| 772 | msgb_free(nmsg); |
| 773 | return NULL; |
| 774 | } |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 775 | |
| 776 | LOGP(DLINP, LOGL_INFO, " tag %d: %s\n", data[1], str); |
| 777 | tag = msgb_put(nmsg, 3 + strlen(str) + 1); |
| 778 | tag[0] = 0x00; |
| 779 | tag[1] = 1 + strlen(str) + 1; |
| 780 | tag[2] = data[1]; |
| 781 | memcpy(tag + 3, str, strlen(str) + 1); |
| 782 | data += 2; |
| 783 | len -= 2; |
| 784 | } |
| 785 | ipa_msg_push_header(nmsg, IPAC_PROTO_IPACCESS); |
| 786 | return nmsg; |
| 787 | } |
| 788 | |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 789 | static struct msgb *ipa_bts_id_ack(void) |
| 790 | { |
| 791 | struct msgb *nmsg2; |
| 792 | |
Pablo Neira Ayuso | 88136fc | 2011-07-08 16:21:55 +0200 | [diff] [blame] | 793 | nmsg2 = ipa_msg_alloc(0); |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 794 | if (!nmsg2) |
| 795 | return NULL; |
| 796 | |
| 797 | *msgb_put(nmsg2, 1) = IPAC_MSGT_ID_ACK; |
Pablo Neira Ayuso | 88136fc | 2011-07-08 16:21:55 +0200 | [diff] [blame] | 798 | ipa_msg_push_header(nmsg2, IPAC_PROTO_IPACCESS); |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 799 | |
| 800 | return nmsg2; |
| 801 | } |
| 802 | |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 803 | static void ipaccess_bts_updown_cb(struct ipa_client_conn *link, int up) |
| 804 | { |
| 805 | struct e1inp_line *line = link->line; |
| 806 | |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 807 | if (up) { |
| 808 | struct osmo_fsm_inst *ka_fsm = ipaccess_line_ts(link->ofd, line)->driver.ipaccess.ka_fsm; |
| 809 | |
| 810 | update_fd_settings(line, link->ofd->fd); |
| 811 | if (ka_fsm && line->ipa_kap) |
| 812 | ipa_keepalive_fsm_start(ka_fsm); |
| 813 | return; |
| 814 | } |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 815 | |
| 816 | if (line->ops->sign_link_down) |
| 817 | line->ops->sign_link_down(line); |
| 818 | } |
| 819 | |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 820 | /* handle incoming message to BTS, check if it is an IPA CCM, and if yes, |
| 821 | * handle it accordingly (PING/PONG/ID_REQ/ID_RESP/ID_ACK) */ |
| 822 | int ipaccess_bts_handle_ccm(struct ipa_client_conn *link, |
| 823 | struct ipaccess_unit *dev, struct msgb *msg) |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 824 | { |
| 825 | struct ipaccess_head *hh = (struct ipaccess_head *) msg->data; |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 826 | struct msgb *rmsg; |
| 827 | int ret = 0; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 828 | /* line might not exist if != bsc||bts */ |
| 829 | struct e1inp_line *line = link->line; |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 830 | |
| 831 | /* special handling for IPA CCM. */ |
| 832 | if (hh->proto == IPAC_PROTO_IPACCESS) { |
| 833 | uint8_t msg_type = *(msg->l2h); |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 834 | struct osmo_fsm_inst* ka_fsm = NULL; |
| 835 | |
| 836 | /* peek the pong for our keepalive fsm */ |
| 837 | if (line && msg_type == IPAC_MSGT_PONG) { |
| 838 | ka_fsm = ipaccess_line_ts(link->ofd, line)->driver.ipaccess.ka_fsm; |
| 839 | ipa_keepalive_fsm_pong_received(ka_fsm); |
| 840 | } |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 841 | |
| 842 | /* ping, pong and acknowledgment cases. */ |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 843 | ret = ipa_ccm_rcvmsg_bts_base(msg, link->ofd); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 844 | if (ret < 0) |
| 845 | goto err; |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 846 | |
| 847 | /* this is a request for identification from the BSC. */ |
| 848 | if (msg_type == IPAC_MSGT_ID_GET) { |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 849 | uint8_t *data = msgb_l2(msg); |
| 850 | int len = msgb_l2len(msg); |
Andreas Eversberg | f422a75 | 2014-01-21 14:54:41 +0100 | [diff] [blame] | 851 | int trx_nr = 0; |
| 852 | |
| 853 | if (link->ofd->priv_nr >= E1INP_SIGN_RSL) |
| 854 | trx_nr = link->ofd->priv_nr - E1INP_SIGN_RSL; |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 855 | |
Vadim Yanitskiy | 69ae238 | 2019-12-02 02:42:43 +0700 | [diff] [blame] | 856 | 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] | 857 | dev->site_id, dev->bts_id, trx_nr); |
Harald Welte | e416e2e | 2017-05-26 13:11:59 +0200 | [diff] [blame] | 858 | rmsg = ipa_bts_id_resp(dev, data + 1, len - 1, trx_nr); |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 859 | ret = ipa_send(link->ofd->fd, rmsg->data, rmsg->len); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 860 | if (ret != rmsg->len) { |
| 861 | LOGP(DLINP, LOGL_ERROR, "cannot send ID_RESP " |
| 862 | "message. Reason: %s\n", strerror(errno)); |
| 863 | goto err_rmsg; |
| 864 | } |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 865 | msgb_free(rmsg); |
| 866 | |
| 867 | /* send ID_ACK. */ |
| 868 | rmsg = ipa_bts_id_ack(); |
Harald Welte | b65f58f | 2014-08-20 22:04:11 +0200 | [diff] [blame] | 869 | ret = ipa_send(link->ofd->fd, rmsg->data, rmsg->len); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 870 | if (ret != rmsg->len) { |
| 871 | LOGP(DLINP, LOGL_ERROR, "cannot send ID_ACK " |
| 872 | "message. Reason: %s\n", strerror(errno)); |
| 873 | goto err_rmsg; |
| 874 | } |
Pablo Neira Ayuso | dfafe68 | 2011-07-02 14:32:32 +0200 | [diff] [blame] | 875 | msgb_free(rmsg); |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 876 | } |
| 877 | return 1; |
| 878 | } |
Harald Welte | 6eddd47 | 2013-06-30 20:18:53 +0200 | [diff] [blame] | 879 | |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 880 | return 0; |
| 881 | |
| 882 | err_rmsg: |
| 883 | msgb_free(rmsg); |
| 884 | err: |
| 885 | ipa_client_conn_close(link); |
| 886 | return -1; |
| 887 | } |
| 888 | |
| 889 | static int ipaccess_bts_read_cb(struct ipa_client_conn *link, struct msgb *msg) |
| 890 | { |
| 891 | struct ipaccess_head *hh = (struct ipaccess_head *) msg->data; |
| 892 | struct e1inp_ts *e1i_ts = NULL; |
| 893 | struct e1inp_sign_link *sign_link; |
Neels Hofmeyr | fe67311 | 2018-08-24 17:43:45 +0200 | [diff] [blame] | 894 | uint8_t msg_type = *(msg->l2h); |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 895 | int ret = 0; |
| 896 | |
| 897 | /* special handling for IPA CCM. */ |
| 898 | if (hh->proto == IPAC_PROTO_IPACCESS) { |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 899 | /* this is a request for identification from the BSC. */ |
| 900 | if (msg_type == IPAC_MSGT_ID_GET) { |
| 901 | if (!link->line->ops->sign_link_up) { |
| 902 | LOGP(DLINP, LOGL_ERROR, |
| 903 | "Unable to set signal link, " |
| 904 | "closing socket.\n"); |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 905 | goto err; |
| 906 | } |
| 907 | } |
| 908 | } |
| 909 | |
| 910 | /* core CCM handling */ |
| 911 | ret = ipaccess_bts_handle_ccm(link, link->line->ops->cfg.ipa.dev, msg); |
| 912 | if (ret < 0) |
| 913 | goto err; |
| 914 | |
| 915 | if (ret == 1 && hh->proto == IPAC_PROTO_IPACCESS) { |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 916 | if (msg_type == IPAC_MSGT_ID_GET) { |
Harald Welte | 6eddd47 | 2013-06-30 20:18:53 +0200 | [diff] [blame] | 917 | sign_link = link->line->ops->sign_link_up(msg, |
| 918 | link->line, |
| 919 | link->ofd->priv_nr); |
| 920 | if (sign_link == NULL) { |
| 921 | LOGP(DLINP, LOGL_ERROR, |
| 922 | "Unable to set signal link, " |
| 923 | "closing socket.\n"); |
Harald Welte | 6eddd47 | 2013-06-30 20:18:53 +0200 | [diff] [blame] | 924 | goto err; |
| 925 | } |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 926 | } |
Pablo Neira Ayuso | 84e5cb9 | 2012-08-23 23:41:54 +0200 | [diff] [blame] | 927 | msgb_free(msg); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 928 | return ret; |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 929 | } else if (link->port == IPA_TCP_PORT_OML) |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 930 | e1i_ts = e1inp_line_ipa_oml_ts(link->line); |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 931 | else if (link->port == IPA_TCP_PORT_RSL) |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 932 | 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] | 933 | |
Pablo Neira Ayuso | b948701 | 2013-07-05 14:38:43 +0200 | [diff] [blame] | 934 | OSMO_ASSERT(e1i_ts != NULL); |
| 935 | |
Neels Hofmeyr | fe67311 | 2018-08-24 17:43:45 +0200 | [diff] [blame] | 936 | if (e1i_ts->type == E1INP_TS_TYPE_NONE) { |
| 937 | LOGP(DLINP, LOGL_ERROR, "Signalling link not initialized. Discarding." |
| 938 | " port=%u msg_type=%u\n", link->port, msg_type); |
Neels Hofmeyr | fe67311 | 2018-08-24 17:43:45 +0200 | [diff] [blame] | 939 | goto err; |
| 940 | } |
Pau Espin Pedrol | 7ad2b15 | 2018-08-28 17:37:59 +0200 | [diff] [blame] | 941 | |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 942 | /* look up for some existing signaling link. */ |
| 943 | sign_link = e1inp_lookup_sign_link(e1i_ts, hh->proto, 0); |
| 944 | if (sign_link == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 945 | LOGP(DLINP, LOGL_ERROR, "no matching signalling link for " |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 946 | "hh->proto=0x%02x\n", hh->proto); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 947 | goto err; |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 948 | } |
| 949 | msg->dst = sign_link; |
| 950 | |
| 951 | /* XXX better use e1inp_ts_rx? */ |
Pablo Neira Ayuso | f163d23 | 2011-06-25 18:42:55 +0200 | [diff] [blame] | 952 | if (!link->line->ops->sign_link) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 953 | LOGP(DLINP, LOGL_ERROR, "Fix your application, " |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 954 | "no action set for signalling messages.\n"); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 955 | goto err; |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 956 | } |
Pau Espin Pedrol | ed122f3 | 2018-08-28 18:25:02 +0200 | [diff] [blame] | 957 | return link->line->ops->sign_link(msg); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 958 | |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 959 | err: |
Harald Welte | 783715b | 2014-08-17 18:24:51 +0200 | [diff] [blame] | 960 | ipa_client_conn_close(link); |
Pablo Neira Ayuso | 1e40194 | 2012-08-22 14:16:24 +0200 | [diff] [blame] | 961 | msgb_free(msg); |
Pau Espin Pedrol | 7ad2b15 | 2018-08-28 17:37:59 +0200 | [diff] [blame] | 962 | return -EBADF; |
Pablo Neira Ayuso | 591ddad | 2011-06-21 18:16:42 +0200 | [diff] [blame] | 963 | } |
| 964 | |
Pablo Neira Ayuso | d621640 | 2011-08-31 16:47:44 +0200 | [diff] [blame] | 965 | struct ipaccess_line { |
Oliver Smith | 65ae42c | 2020-01-22 11:24:52 +0100 | [diff] [blame] | 966 | bool line_already_initialized; |
Pablo Neira Ayuso | d621640 | 2011-08-31 16:47:44 +0200 | [diff] [blame] | 967 | }; |
| 968 | |
Pablo Neira Ayuso | 4e862cb | 2011-08-19 18:43:38 +0200 | [diff] [blame] | 969 | static int ipaccess_line_update(struct e1inp_line *line) |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 970 | { |
| 971 | int ret = -ENOENT; |
Pablo Neira Ayuso | d621640 | 2011-08-31 16:47:44 +0200 | [diff] [blame] | 972 | struct ipaccess_line *il; |
| 973 | |
| 974 | if (!line->driver_data) |
| 975 | line->driver_data = talloc_zero(line, struct ipaccess_line); |
| 976 | |
| 977 | if (!line->driver_data) { |
| 978 | LOGP(DLINP, LOGL_ERROR, "ipaccess: OOM in line update\n"); |
| 979 | return -ENOMEM; |
| 980 | } |
| 981 | il = line->driver_data; |
| 982 | |
| 983 | /* We only initialize this line once. */ |
| 984 | if (il->line_already_initialized) |
| 985 | return 0; |
| 986 | |
Oliver Smith | 65ae42c | 2020-01-22 11:24:52 +0100 | [diff] [blame] | 987 | il->line_already_initialized = true; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 988 | |
Pablo Neira Ayuso | 4e862cb | 2011-08-19 18:43:38 +0200 | [diff] [blame] | 989 | switch(line->ops->cfg.ipa.role) { |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 990 | case E1INP_LINE_R_BSC: { |
| 991 | struct ipa_server_link *oml_link, *rsl_link; |
Max | 4c4a1c2 | 2016-12-30 15:10:47 +0100 | [diff] [blame] | 992 | const char *ipa = e1inp_ipa_get_bind_addr(); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 993 | |
Max | 4c4a1c2 | 2016-12-30 15:10:47 +0100 | [diff] [blame] | 994 | LOGP(DLINP, LOGL_NOTICE, "enabling ipaccess BSC mode on %s " |
| 995 | "with OML %u and RSL %u TCP ports\n", ipa, |
| 996 | IPA_TCP_PORT_OML, IPA_TCP_PORT_RSL); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 997 | |
Max | 4c4a1c2 | 2016-12-30 15:10:47 +0100 | [diff] [blame] | 998 | oml_link = ipa_server_link_create(tall_ipa_ctx, line, ipa, |
Neels Hofmeyr | 0db1d43 | 2016-02-22 13:29:09 +0100 | [diff] [blame] | 999 | IPA_TCP_PORT_OML, |
Pablo Neira Ayuso | e009f4a | 2011-06-23 13:36:34 +0200 | [diff] [blame] | 1000 | ipaccess_bsc_oml_cb, NULL); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1001 | if (oml_link == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1002 | LOGP(DLINP, LOGL_ERROR, "cannot create OML " |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1003 | "BSC link: %s\n", strerror(errno)); |
| 1004 | return -ENOMEM; |
Pablo Neira Ayuso | f67471f | 2011-06-07 11:25:49 +0200 | [diff] [blame] | 1005 | } |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1006 | if (ipa_server_link_open(oml_link) < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1007 | LOGP(DLINP, LOGL_ERROR, "cannot open OML BSC link: %s\n", |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1008 | strerror(errno)); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1009 | ipa_server_link_destroy(oml_link); |
| 1010 | return -EIO; |
Pablo Neira Ayuso | f67471f | 2011-06-07 11:25:49 +0200 | [diff] [blame] | 1011 | } |
Max | 4c4a1c2 | 2016-12-30 15:10:47 +0100 | [diff] [blame] | 1012 | rsl_link = ipa_server_link_create(tall_ipa_ctx, line, ipa, |
Neels Hofmeyr | 0db1d43 | 2016-02-22 13:29:09 +0100 | [diff] [blame] | 1013 | IPA_TCP_PORT_RSL, |
Pablo Neira Ayuso | e009f4a | 2011-06-23 13:36:34 +0200 | [diff] [blame] | 1014 | ipaccess_bsc_rsl_cb, NULL); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1015 | if (rsl_link == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1016 | LOGP(DLINP, LOGL_ERROR, "cannot create RSL " |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1017 | "BSC link: %s\n", strerror(errno)); |
| 1018 | return -ENOMEM; |
| 1019 | } |
| 1020 | if (ipa_server_link_open(rsl_link) < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1021 | LOGP(DLINP, LOGL_ERROR, "cannot open RSL BSC link: %s\n", |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1022 | strerror(errno)); |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1023 | ipa_server_link_destroy(rsl_link); |
| 1024 | return -EIO; |
| 1025 | } |
| 1026 | ret = 0; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1027 | break; |
Pablo Neira Ayuso | 986191f | 2011-06-21 19:56:26 +0200 | [diff] [blame] | 1028 | } |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1029 | case E1INP_LINE_R_BTS: { |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1030 | struct ipa_client_conn *link; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 1031 | struct e1inp_ts *e1i_ts; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1032 | |
Max | 4c4a1c2 | 2016-12-30 15:10:47 +0100 | [diff] [blame] | 1033 | LOGP(DLINP, LOGL_NOTICE, "enabling ipaccess BTS mode, " |
| 1034 | "OML connecting to %s:%u\n", line->ops->cfg.ipa.addr, |
| 1035 | IPA_TCP_PORT_OML); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1036 | |
Pau Espin Pedrol | b6e28bf | 2019-11-08 17:30:28 +0100 | [diff] [blame] | 1037 | link = ipa_client_conn_create2(tall_ipa_ctx, |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 1038 | e1inp_line_ipa_oml_ts(line), |
Pablo Neira Ayuso | 00af772 | 2011-09-08 12:47:06 +0200 | [diff] [blame] | 1039 | E1INP_SIGN_OML, |
Pau Espin Pedrol | b6e28bf | 2019-11-08 17:30:28 +0100 | [diff] [blame] | 1040 | NULL, 0, |
Pablo Neira Ayuso | 4e862cb | 2011-08-19 18:43:38 +0200 | [diff] [blame] | 1041 | line->ops->cfg.ipa.addr, |
| 1042 | IPA_TCP_PORT_OML, |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 1043 | ipaccess_bts_updown_cb, |
Harald Welte | a3e9dd5 | 2013-06-30 14:25:07 +0200 | [diff] [blame] | 1044 | ipaccess_bts_read_cb, |
Pablo Neira Ayuso | c9c4fd3 | 2011-06-30 12:19:42 +0200 | [diff] [blame] | 1045 | ipaccess_bts_write_cb, |
Harald Welte | 10b4130 | 2013-06-30 14:05:49 +0200 | [diff] [blame] | 1046 | line); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1047 | if (link == NULL) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1048 | LOGP(DLINP, LOGL_ERROR, "cannot create OML " |
Pablo Neira Ayuso | 29465d3 | 2011-06-21 14:21:33 +0200 | [diff] [blame] | 1049 | "BTS link: %s\n", strerror(errno)); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1050 | return -ENOMEM; |
| 1051 | } |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 1052 | if (ipa_client_conn_open(link) < 0) { |
Harald Welte | cc2241b | 2011-07-19 16:06:06 +0200 | [diff] [blame] | 1053 | LOGP(DLINP, LOGL_ERROR, "cannot open OML BTS link: %s\n", |
Pablo Neira Ayuso | 29465d3 | 2011-06-21 14:21:33 +0200 | [diff] [blame] | 1054 | strerror(errno)); |
Pablo Neira Ayuso | f099567 | 2011-09-08 12:58:38 +0200 | [diff] [blame] | 1055 | ipa_client_conn_close(link); |
| 1056 | ipa_client_conn_destroy(link); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1057 | return -EIO; |
| 1058 | } |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 1059 | |
| 1060 | e1i_ts = e1inp_line_ipa_oml_ts(line); |
| 1061 | ipaccess_bts_keepalive_fsm_alloc(e1i_ts, link, "oml_bts_to_bsc"); |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1062 | ret = 0; |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1063 | break; |
Pablo Neira Ayuso | 96e8128 | 2011-06-09 15:06:11 +0200 | [diff] [blame] | 1064 | } |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1065 | default: |
| 1066 | break; |
| 1067 | } |
| 1068 | return ret; |
| 1069 | } |
| 1070 | |
Andreas Eversberg | f422a75 | 2014-01-21 14:54:41 +0100 | [diff] [blame] | 1071 | |
| 1072 | /* backwards compatibility */ |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1073 | int e1inp_ipa_bts_rsl_connect(struct e1inp_line *line, |
| 1074 | const char *rem_addr, uint16_t rem_port) |
| 1075 | { |
Andreas Eversberg | f422a75 | 2014-01-21 14:54:41 +0100 | [diff] [blame] | 1076 | return e1inp_ipa_bts_rsl_connect_n(line, rem_addr, rem_port, 0); |
| 1077 | } |
| 1078 | |
| 1079 | int e1inp_ipa_bts_rsl_connect_n(struct e1inp_line *line, |
| 1080 | const char *rem_addr, uint16_t rem_port, |
| 1081 | uint8_t trx_nr) |
| 1082 | { |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1083 | struct ipa_client_conn *rsl_link; |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 1084 | struct e1inp_ts *e1i_ts = e1inp_line_ipa_rsl_ts(line, trx_nr); |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1085 | |
Andreas Eversberg | f422a75 | 2014-01-21 14:54:41 +0100 | [diff] [blame] | 1086 | if (E1INP_SIGN_RSL+trx_nr-1 >= NUM_E1_TS) { |
| 1087 | LOGP(DLINP, LOGL_ERROR, "cannot create RSL BTS link: " |
| 1088 | "trx_nr (%d) out of range\n", trx_nr); |
| 1089 | return -EINVAL; |
| 1090 | } |
Andreas Eversberg | f422a75 | 2014-01-21 14:54:41 +0100 | [diff] [blame] | 1091 | |
Pau Espin Pedrol | b6e28bf | 2019-11-08 17:30:28 +0100 | [diff] [blame] | 1092 | rsl_link = ipa_client_conn_create2(tall_ipa_ctx, |
Pau Espin Pedrol | b5cfc6b | 2018-10-02 21:22:18 +0200 | [diff] [blame] | 1093 | e1inp_line_ipa_rsl_ts(line, trx_nr), |
Andreas Eversberg | f422a75 | 2014-01-21 14:54:41 +0100 | [diff] [blame] | 1094 | E1INP_SIGN_RSL+trx_nr, |
Pau Espin Pedrol | b6e28bf | 2019-11-08 17:30:28 +0100 | [diff] [blame] | 1095 | NULL, 0, |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1096 | rem_addr, rem_port, |
Harald Welte | 51de9ca | 2013-06-30 20:13:16 +0200 | [diff] [blame] | 1097 | ipaccess_bts_updown_cb, |
Harald Welte | a3e9dd5 | 2013-06-30 14:25:07 +0200 | [diff] [blame] | 1098 | ipaccess_bts_read_cb, |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1099 | ipaccess_bts_write_cb, |
Harald Welte | 10b4130 | 2013-06-30 14:05:49 +0200 | [diff] [blame] | 1100 | line); |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1101 | if (rsl_link == NULL) { |
| 1102 | LOGP(DLINP, LOGL_ERROR, "cannot create RSL " |
| 1103 | "BTS link: %s\n", strerror(errno)); |
| 1104 | return -ENOMEM; |
| 1105 | } |
| 1106 | if (ipa_client_conn_open(rsl_link) < 0) { |
| 1107 | LOGP(DLINP, LOGL_ERROR, "cannot open RSL BTS link: %s\n", |
| 1108 | strerror(errno)); |
| 1109 | ipa_client_conn_close(rsl_link); |
| 1110 | ipa_client_conn_destroy(rsl_link); |
| 1111 | return -EIO; |
| 1112 | } |
Eric Wild | ef1f327 | 2019-07-10 18:10:31 +0200 | [diff] [blame] | 1113 | |
| 1114 | ipaccess_bts_keepalive_fsm_alloc(e1i_ts, rsl_link, "rsl_bts_to_bsc"); |
Harald Welte | 84f67b2 | 2013-06-30 13:13:59 +0200 | [diff] [blame] | 1115 | return 0; |
| 1116 | } |
| 1117 | |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1118 | void e1inp_ipaccess_init(void) |
| 1119 | { |
Pablo Neira Ayuso | 54b4979 | 2011-06-07 12:15:26 +0200 | [diff] [blame] | 1120 | tall_ipa_ctx = talloc_named_const(libosmo_abis_ctx, 1, "ipa"); |
Pablo Neira Ayuso | 0ba77d5 | 2011-06-05 18:32:44 +0200 | [diff] [blame] | 1121 | e1inp_driver_register(&ipaccess_driver); |
| 1122 | } |
Neels Hofmeyr | 0db1d43 | 2016-02-22 13:29:09 +0100 | [diff] [blame] | 1123 | |
| 1124 | void e1inp_ipa_set_bind_addr(const char *ip_bind_addr) |
| 1125 | { |
| 1126 | talloc_free((char*)ipaccess_driver.bind_addr); |
| 1127 | ipaccess_driver.bind_addr = NULL; |
| 1128 | |
| 1129 | if (ip_bind_addr) |
| 1130 | ipaccess_driver.bind_addr = talloc_strdup(tall_ipa_ctx, |
| 1131 | ip_bind_addr); |
| 1132 | } |
| 1133 | |
| 1134 | const char *e1inp_ipa_get_bind_addr(void) |
| 1135 | { |
| 1136 | return ipaccess_driver.bind_addr? |
| 1137 | ipaccess_driver.bind_addr |
| 1138 | : "0.0.0.0"; |
| 1139 | } |