Harald Welte | 3dcdd20 | 2019-03-09 13:06:46 +0100 | [diff] [blame] | 1 | /* (C) 2018-2019 by Harald Welte <laforge@gnumonks.org> |
| 2 | * |
| 3 | * All Rights Reserved |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along |
| 18 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 19 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | */ |
| 22 | |
| 23 | |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 24 | #include <stdint.h> |
| 25 | #include <string.h> |
| 26 | #include <errno.h> |
| 27 | |
| 28 | #include <talloc.h> |
| 29 | |
| 30 | #include <osmocom/core/logging.h> |
| 31 | #include <osmocom/core/utils.h> |
| 32 | #include <osmocom/core/msgb.h> |
| 33 | #include <osmocom/core/fsm.h> |
| 34 | |
| 35 | #include <osmocom/abis/ipa.h> |
| 36 | #include <osmocom/gsm/protocol/ipaccess.h> |
| 37 | |
| 38 | #include "client.h" |
| 39 | #include "rspro_util.h" |
| 40 | |
| 41 | #define S(x) (1 << (x)) |
| 42 | |
Harald Welte | 707c85a | 2019-03-09 12:56:35 +0100 | [diff] [blame] | 43 | #define T1_WAIT_CLIENT_CONN_RES 10 |
| 44 | #define T2_RECONNECT 10 |
| 45 | |
| 46 | /*********************************************************************** |
| 47 | * server connection FSM: remsim-{client,bankd} to remsim-server |
| 48 | ***********************************************************************/ |
| 49 | |
Harald Welte | 7f0e82f | 2018-10-14 20:07:59 +0200 | [diff] [blame] | 50 | static void push_and_send(struct ipa_client_conn *ipa, struct msgb *msg_tx) |
| 51 | { |
| 52 | ipa_prepend_header_ext(msg_tx, IPAC_PROTO_EXT_RSPRO); |
| 53 | ipa_msg_push_header(msg_tx, IPAC_PROTO_OSMO); |
| 54 | ipa_client_conn_send(ipa, msg_tx); |
| 55 | /* msg_tx is now queued and will be freed. */ |
| 56 | } |
| 57 | |
Harald Welte | a844bb0 | 2019-03-09 13:38:50 +0100 | [diff] [blame] | 58 | int ipa_client_conn_send_rspro(struct ipa_client_conn *ipa, RsproPDU_t *rspro) |
Harald Welte | 7f0e82f | 2018-10-14 20:07:59 +0200 | [diff] [blame] | 59 | { |
| 60 | struct msgb *msg = rspro_enc_msg(rspro); |
Harald Welte | 2eee450 | 2019-03-30 08:50:35 +0100 | [diff] [blame] | 61 | if (!msg) { |
Harald Welte | a8b86ce | 2019-03-31 14:59:20 +0200 | [diff] [blame] | 62 | LOGP(DMAIN, LOGL_ERROR, "Error encoding RSPRO: %s\n", rspro_msgt_name(rspro)); |
| 63 | osmo_log_backtrace(DMAIN, LOGL_ERROR); |
Harald Welte | 2eee450 | 2019-03-30 08:50:35 +0100 | [diff] [blame] | 64 | ASN_STRUCT_FREE(asn_DEF_RsproPDU, rspro); |
Harald Welte | a844bb0 | 2019-03-09 13:38:50 +0100 | [diff] [blame] | 65 | return -1; |
Harald Welte | 2eee450 | 2019-03-30 08:50:35 +0100 | [diff] [blame] | 66 | } |
Harald Welte | 7f0e82f | 2018-10-14 20:07:59 +0200 | [diff] [blame] | 67 | push_and_send(ipa, msg); |
Harald Welte | a844bb0 | 2019-03-09 13:38:50 +0100 | [diff] [blame] | 68 | return 0; |
| 69 | } |
| 70 | |
| 71 | int server_conn_send_rspro(struct rspro_server_conn *srvc, RsproPDU_t *rspro) |
| 72 | { |
Harald Welte | a8b86ce | 2019-03-31 14:59:20 +0200 | [diff] [blame] | 73 | if (!rspro) { |
| 74 | LOGPFSML(srvc->fi, LOGL_ERROR, "Attempt to transmit NULL\n"); |
| 75 | osmo_log_backtrace(DMAIN, LOGL_ERROR); |
| 76 | return -EINVAL; |
| 77 | } |
Harald Welte | b49ac9c | 2019-03-09 20:36:07 +0100 | [diff] [blame] | 78 | LOGPFSM(srvc->fi, "Tx RSPRO %s\n", rspro_msgt_name(rspro)); |
Harald Welte | a844bb0 | 2019-03-09 13:38:50 +0100 | [diff] [blame] | 79 | return ipa_client_conn_send_rspro(srvc->conn, rspro); |
Harald Welte | 7f0e82f | 2018-10-14 20:07:59 +0200 | [diff] [blame] | 80 | } |
| 81 | |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 82 | enum server_conn_fsm_state { |
| 83 | /* waiting for initial connectiong to remsim-server */ |
| 84 | SRVC_ST_INIT, |
| 85 | /* server connection established, waiting for ClientConnectRes */ |
| 86 | SRVC_ST_ESTABLISHED, |
| 87 | /* server connection etsablished, ClientConnect succeeded */ |
| 88 | SRVC_ST_CONNECTED, |
| 89 | /* connection lost, we're waiting for a re-establish */ |
| 90 | SRVC_ST_REESTABLISH, |
| 91 | }; |
| 92 | |
| 93 | static const struct value_string server_conn_fsm_event_names[] = { |
| 94 | OSMO_VALUE_STRING(SRVC_E_TCP_UP), |
| 95 | OSMO_VALUE_STRING(SRVC_E_TCP_DOWN), |
Harald Welte | 03b2411 | 2019-03-08 19:43:02 +0100 | [diff] [blame] | 96 | OSMO_VALUE_STRING(SRVC_E_KA_TIMEOUT), |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 97 | OSMO_VALUE_STRING(SRVC_E_CLIENT_CONN_RES), |
| 98 | { 0, NULL } |
| 99 | }; |
| 100 | |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 101 | static void srvc_updown_cb(struct ipa_client_conn *conn, int up) |
| 102 | { |
| 103 | struct rspro_server_conn *srvc = conn->data; |
| 104 | |
Harald Welte | e57334e | 2019-03-27 22:58:10 +0100 | [diff] [blame] | 105 | LOGPFSM(srvc->fi, "RSPRO link to %s:%d %s\n", conn->addr, conn->port, up ? "UP" : "DOWN"); |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 106 | |
| 107 | osmo_fsm_inst_dispatch(srvc->fi, up ? SRVC_E_TCP_UP: SRVC_E_TCP_DOWN, 0); |
| 108 | } |
| 109 | |
| 110 | static int srvc_read_cb(struct ipa_client_conn *conn, struct msgb *msg) |
| 111 | { |
| 112 | struct ipaccess_head *hh = (struct ipaccess_head *) msg->data; |
| 113 | struct ipaccess_head_ext *he = (struct ipaccess_head_ext *) msgb_l2(msg); |
| 114 | struct rspro_server_conn *srvc = conn->data; |
Harald Welte | f9995a3 | 2018-10-14 20:40:05 +0200 | [diff] [blame] | 115 | RsproPDU_t *pdu; |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 116 | int rc; |
| 117 | |
| 118 | if (msgb_length(msg) < sizeof(*hh)) |
| 119 | goto invalid; |
| 120 | msg->l2h = &hh->data[0]; |
Harald Welte | 1a17104 | 2019-03-08 19:18:52 +0100 | [diff] [blame] | 121 | switch (hh->proto) { |
Harald Welte | 03b2411 | 2019-03-08 19:43:02 +0100 | [diff] [blame] | 122 | case IPAC_PROTO_IPACCESS: |
| 123 | rc = ipaccess_bts_handle_ccm(srvc->conn, &srvc->ipa_dev, msg); |
| 124 | if (rc < 0) |
| 125 | break; |
| 126 | switch (hh->data[0]) { |
| 127 | case IPAC_MSGT_PONG: |
| 128 | ipa_keepalive_fsm_pong_received(srvc->keepalive_fi); |
| 129 | rc = 0; |
| 130 | break; |
| 131 | default: |
| 132 | break; |
| 133 | } |
| 134 | break; |
Harald Welte | 1a17104 | 2019-03-08 19:18:52 +0100 | [diff] [blame] | 135 | case IPAC_PROTO_OSMO: |
| 136 | if (!he || msgb_l2len(msg) < sizeof(*he)) |
| 137 | goto invalid; |
| 138 | msg->l2h = &he->data[0]; |
| 139 | switch (he->proto) { |
| 140 | case IPAC_PROTO_EXT_RSPRO: |
Harald Welte | e57334e | 2019-03-27 22:58:10 +0100 | [diff] [blame] | 141 | LOGPFSM(srvc->fi, "Received RSPRO %s\n", msgb_hexdump(msg)); |
Harald Welte | 1a17104 | 2019-03-08 19:18:52 +0100 | [diff] [blame] | 142 | pdu = rspro_dec_msg(msg); |
| 143 | if (!pdu) |
| 144 | goto invalid; |
| 145 | rc = srvc->handle_rx(srvc, pdu); |
| 146 | ASN_STRUCT_FREE(asn_DEF_RsproPDU, pdu); |
| 147 | break; |
| 148 | default: |
| 149 | goto invalid; |
| 150 | } |
| 151 | break; |
| 152 | default: |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 153 | goto invalid; |
Harald Welte | 1a17104 | 2019-03-08 19:18:52 +0100 | [diff] [blame] | 154 | } |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 155 | |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 156 | return rc; |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 157 | |
| 158 | invalid: |
Harald Welte | e57334e | 2019-03-27 22:58:10 +0100 | [diff] [blame] | 159 | LOGPFSML(srvc->fi, LOGL_ERROR, "Error decoding PDU\n"); |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 160 | msgb_free(msg); |
| 161 | return -1; |
| 162 | } |
| 163 | |
Harald Welte | 03b2411 | 2019-03-08 19:43:02 +0100 | [diff] [blame] | 164 | static const struct ipa_keepalive_params ka_params = { |
| 165 | .interval = 30, |
| 166 | .wait_for_resp = 10, |
| 167 | }; |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 168 | |
| 169 | static void srvc_st_init_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state) |
| 170 | { |
| 171 | struct rspro_server_conn *srvc = (struct rspro_server_conn *) fi->priv; |
| 172 | int rc; |
| 173 | |
Harald Welte | 098ef87 | 2018-10-14 20:08:50 +0200 | [diff] [blame] | 174 | srvc->conn = ipa_client_conn_create(fi, NULL, 0, srvc->server_host, srvc->server_port, |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 175 | srvc_updown_cb, srvc_read_cb, NULL, srvc); |
| 176 | if (!srvc->conn) { |
Harald Welte | 03b2411 | 2019-03-08 19:43:02 +0100 | [diff] [blame] | 177 | LOGPFSM(fi, "Unable to create socket: %s\n", strerror(errno)); |
| 178 | goto out_fi; |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 179 | } |
Harald Welte | 03b2411 | 2019-03-08 19:43:02 +0100 | [diff] [blame] | 180 | |
| 181 | srvc->keepalive_fi = ipa_client_conn_alloc_keepalive_fsm(srvc->conn, &ka_params, fi->id); |
| 182 | if (!srvc->keepalive_fi) { |
| 183 | LOGPFSM(fi, "Unable to create keepalive FSM\n"); |
| 184 | goto out_conn; |
| 185 | } |
| 186 | /* ensure parent is notified once keepalive FSM instance is dying */ |
| 187 | osmo_fsm_inst_change_parent(srvc->keepalive_fi, srvc->fi, SRVC_E_KA_TIMEOUT); |
| 188 | |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 189 | /* Attempt to connect TCP socket */ |
| 190 | rc = ipa_client_conn_open(srvc->conn); |
| 191 | if (rc < 0) { |
Harald Welte | e57334e | 2019-03-27 22:58:10 +0100 | [diff] [blame] | 192 | LOGPFSML(fi, LOGL_NOTICE, "Unable to connect: %s\n", strerror(errno)); |
Harald Welte | 03b2411 | 2019-03-08 19:43:02 +0100 | [diff] [blame] | 193 | goto out_ka; |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 194 | } |
Harald Welte | 03b2411 | 2019-03-08 19:43:02 +0100 | [diff] [blame] | 195 | |
| 196 | return; |
| 197 | |
| 198 | out_ka: |
| 199 | osmo_fsm_inst_term(srvc->keepalive_fi, OSMO_FSM_TERM_ERROR, NULL); |
| 200 | out_conn: |
| 201 | ipa_client_conn_destroy(srvc->conn); |
| 202 | out_fi: |
| 203 | osmo_fsm_inst_term(fi, OSMO_FSM_TERM_ERROR, NULL); |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 204 | } |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 205 | |
| 206 | static void srvc_st_init(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 207 | { |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 208 | switch (event) { |
| 209 | case SRVC_E_TCP_UP: |
| 210 | osmo_fsm_inst_state_chg(fi, SRVC_ST_ESTABLISHED, T1_WAIT_CLIENT_CONN_RES, 1); |
| 211 | break; |
Harald Welte | 52cc7db | 2018-09-24 11:51:51 +0200 | [diff] [blame] | 212 | case SRVC_E_TCP_DOWN: |
| 213 | osmo_fsm_inst_state_chg(fi, SRVC_ST_REESTABLISH, T2_RECONNECT, 2); |
| 214 | break; |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 215 | default: |
| 216 | OSMO_ASSERT(0); |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | static void srvc_st_established_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state) |
| 221 | { |
| 222 | struct rspro_server_conn *srvc = (struct rspro_server_conn *) fi->priv; |
| 223 | RsproPDU_t *pdu; |
| 224 | |
Harald Welte | 03b2411 | 2019-03-08 19:43:02 +0100 | [diff] [blame] | 225 | ipa_keepalive_fsm_start(srvc->keepalive_fi); |
| 226 | |
Harald Welte | 707c85a | 2019-03-09 12:56:35 +0100 | [diff] [blame] | 227 | if (srvc->own_comp_id.type == ComponentType_remsimClient) |
| 228 | pdu = rspro_gen_ConnectClientReq(&srvc->own_comp_id, srvc->clslot); |
| 229 | else |
Harald Welte | 4fa407a | 2019-04-01 21:05:06 +0200 | [diff] [blame] | 230 | pdu = rspro_gen_ConnectBankReq(&srvc->own_comp_id, srvc->bankd.bank_id, |
| 231 | srvc->bankd.num_slots); |
Harald Welte | a844bb0 | 2019-03-09 13:38:50 +0100 | [diff] [blame] | 232 | server_conn_send_rspro(srvc, pdu); |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | static void srvc_st_established(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 236 | { |
Harald Welte | 4e7a285 | 2019-03-17 21:01:50 +0100 | [diff] [blame] | 237 | struct rspro_server_conn *srvc = (struct rspro_server_conn *) fi->priv; |
| 238 | RsproPDU_t *pdu = NULL; |
| 239 | e_ResultCode res; |
| 240 | |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 241 | switch (event) { |
| 242 | case SRVC_E_TCP_DOWN: |
Harald Welte | 03b2411 | 2019-03-08 19:43:02 +0100 | [diff] [blame] | 243 | case SRVC_E_KA_TIMEOUT: |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 244 | osmo_fsm_inst_state_chg(fi, SRVC_ST_REESTABLISH, T2_RECONNECT, 2); |
| 245 | break; |
| 246 | case SRVC_E_CLIENT_CONN_RES: |
Harald Welte | 4e7a285 | 2019-03-17 21:01:50 +0100 | [diff] [blame] | 247 | pdu = data; |
| 248 | res = rspro_get_result(pdu); |
| 249 | if (res != ResultCode_ok) { |
| 250 | ipa_client_conn_close(srvc->conn); |
| 251 | osmo_fsm_inst_dispatch(fi, SRVC_E_TCP_DOWN, NULL); |
| 252 | } else { |
| 253 | /* somehow notify the main code? */ |
| 254 | osmo_fsm_inst_state_chg(fi, SRVC_ST_CONNECTED, 0, 0); |
| 255 | } |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 256 | break; |
| 257 | default: |
| 258 | OSMO_ASSERT(0); |
| 259 | } |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 260 | } |
| 261 | |
| 262 | static void srvc_st_connected(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 263 | { |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 264 | switch (event) { |
| 265 | case SRVC_E_TCP_DOWN: |
Harald Welte | 03b2411 | 2019-03-08 19:43:02 +0100 | [diff] [blame] | 266 | case SRVC_E_KA_TIMEOUT: |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 267 | osmo_fsm_inst_state_chg(fi, SRVC_ST_REESTABLISH, T2_RECONNECT, 2); |
| 268 | break; |
| 269 | default: |
| 270 | OSMO_ASSERT(0); |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | static void srvc_st_reestablish_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state) |
| 275 | { |
| 276 | struct rspro_server_conn *srvc = (struct rspro_server_conn *) fi->priv; |
| 277 | int rc; |
| 278 | |
Harald Welte | 03b2411 | 2019-03-08 19:43:02 +0100 | [diff] [blame] | 279 | ipa_keepalive_fsm_stop(srvc->keepalive_fi); |
| 280 | |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 281 | /* Attempt to connect TCP socket */ |
| 282 | rc = ipa_client_conn_open(srvc->conn); |
| 283 | if (rc < 0) { |
Harald Welte | e57334e | 2019-03-27 22:58:10 +0100 | [diff] [blame] | 284 | LOGPFSM(fi, "Unable to connect RSPRO to %s:%d - %s\n", |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 285 | srvc->server_host, srvc->server_port, strerror(errno)); |
| 286 | /* FIXME: retry? Timer? Abort? */ |
| 287 | OSMO_ASSERT(0); |
| 288 | } |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 289 | } |
| 290 | |
| 291 | static void srvc_st_reestablish(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 292 | { |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 293 | switch (event) { |
Harald Welte | 52cc7db | 2018-09-24 11:51:51 +0200 | [diff] [blame] | 294 | case SRVC_E_TCP_UP: |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 295 | osmo_fsm_inst_state_chg(fi, SRVC_ST_ESTABLISHED, T1_WAIT_CLIENT_CONN_RES, 1); |
| 296 | break; |
Harald Welte | 52cc7db | 2018-09-24 11:51:51 +0200 | [diff] [blame] | 297 | case SRVC_E_TCP_DOWN: |
| 298 | /* wait for normal T2 call-back */ |
| 299 | break; |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 300 | default: |
| 301 | OSMO_ASSERT(0); |
| 302 | } |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 303 | } |
| 304 | |
| 305 | static int server_conn_fsm_timer_cb(struct osmo_fsm_inst *fi) |
| 306 | { |
Harald Welte | a025e70 | 2019-03-09 21:39:09 +0100 | [diff] [blame] | 307 | struct rspro_server_conn *srvc = (struct rspro_server_conn *) fi->priv; |
| 308 | |
Harald Welte | 52cc7db | 2018-09-24 11:51:51 +0200 | [diff] [blame] | 309 | switch (fi->T) { |
| 310 | case 2: |
| 311 | osmo_fsm_inst_state_chg(fi, SRVC_ST_REESTABLISH, T2_RECONNECT, 2); |
| 312 | break; |
| 313 | case 1: |
Harald Welte | f511667 | 2019-04-02 20:55:06 +0200 | [diff] [blame] | 314 | /* close connection and re-start connection attempt */ |
Harald Welte | a025e70 | 2019-03-09 21:39:09 +0100 | [diff] [blame] | 315 | ipa_client_conn_close(srvc->conn); |
| 316 | osmo_fsm_inst_dispatch(fi, SRVC_E_TCP_DOWN, NULL); |
Harald Welte | 52cc7db | 2018-09-24 11:51:51 +0200 | [diff] [blame] | 317 | break; |
| 318 | default: |
| 319 | OSMO_ASSERT(0); |
| 320 | } |
| 321 | |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 322 | return 0; |
| 323 | } |
| 324 | |
| 325 | static const struct osmo_fsm_state server_conn_fsm_states[] = { |
| 326 | [SRVC_ST_INIT] = { |
| 327 | .name = "INIT", |
Harald Welte | 52cc7db | 2018-09-24 11:51:51 +0200 | [diff] [blame] | 328 | .in_event_mask = S(SRVC_E_TCP_UP) | S(SRVC_E_TCP_DOWN), |
| 329 | .out_state_mask = S(SRVC_ST_ESTABLISHED) | S(SRVC_ST_REESTABLISH), |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 330 | .action = srvc_st_init, |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 331 | .onenter = srvc_st_init_onenter, |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 332 | }, |
| 333 | [SRVC_ST_ESTABLISHED] = { |
| 334 | .name = "ESTABLISHED", |
Harald Welte | 03b2411 | 2019-03-08 19:43:02 +0100 | [diff] [blame] | 335 | .in_event_mask = S(SRVC_E_TCP_DOWN) | S(SRVC_E_KA_TIMEOUT) | S(SRVC_E_CLIENT_CONN_RES), |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 336 | .out_state_mask = S(SRVC_ST_CONNECTED) | S(SRVC_ST_REESTABLISH), |
| 337 | .action = srvc_st_established, |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 338 | .onenter = srvc_st_established_onenter, |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 339 | }, |
| 340 | [SRVC_ST_CONNECTED] = { |
| 341 | .name = "CONNECTED", |
Harald Welte | 03b2411 | 2019-03-08 19:43:02 +0100 | [diff] [blame] | 342 | .in_event_mask = S(SRVC_E_TCP_DOWN) | S(SRVC_E_KA_TIMEOUT), |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 343 | .out_state_mask = S(SRVC_ST_REESTABLISH), |
| 344 | .action = srvc_st_connected, |
| 345 | }, |
| 346 | [SRVC_ST_REESTABLISH] = { |
| 347 | .name = "REESTABLISH", |
Harald Welte | 52cc7db | 2018-09-24 11:51:51 +0200 | [diff] [blame] | 348 | .in_event_mask = S(SRVC_E_TCP_UP) | S(SRVC_E_TCP_DOWN), |
| 349 | .out_state_mask = S(SRVC_ST_ESTABLISHED) | S(SRVC_ST_REESTABLISH), |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 350 | .action = srvc_st_reestablish, |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 351 | .onenter = srvc_st_reestablish_onenter, |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 352 | }, |
| 353 | }; |
| 354 | |
Harald Welte | 3cded63 | 2019-03-09 12:59:41 +0100 | [diff] [blame] | 355 | struct osmo_fsm rspro_client_server_fsm = { |
| 356 | .name = "RSPRO_CLIENT", |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 357 | .states = server_conn_fsm_states, |
| 358 | .num_states = ARRAY_SIZE(server_conn_fsm_states), |
| 359 | .timer_cb = server_conn_fsm_timer_cb, |
| 360 | .log_subsys = DMAIN, |
| 361 | .event_names = server_conn_fsm_event_names, |
| 362 | }; |
| 363 | |
Harald Welte | 098ef87 | 2018-10-14 20:08:50 +0200 | [diff] [blame] | 364 | int server_conn_fsm_alloc(void *ctx, struct rspro_server_conn *srvc) |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 365 | { |
| 366 | struct osmo_fsm_inst *fi; |
| 367 | |
Harald Welte | 3cded63 | 2019-03-09 12:59:41 +0100 | [diff] [blame] | 368 | fi = osmo_fsm_inst_alloc(&rspro_client_server_fsm, ctx, srvc, LOGL_DEBUG, "server"); |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 369 | if (!fi) |
| 370 | return -1; |
| 371 | |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 372 | srvc->fi = fi; |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 373 | /* onenter of the initial state is not automatically executed by osmo_fsm :( */ |
Harald Welte | 84ba234 | 2018-08-24 22:20:20 +0200 | [diff] [blame] | 374 | srvc_st_init_onenter(fi, 0); |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 375 | return 0; |
| 376 | } |
Harald Welte | 7fc64bc | 2019-03-02 12:55:59 +0100 | [diff] [blame] | 377 | |
| 378 | static __attribute__((constructor)) void on_dso_load(void) |
| 379 | { |
Harald Welte | 3cded63 | 2019-03-09 12:59:41 +0100 | [diff] [blame] | 380 | osmo_fsm_register(&rspro_client_server_fsm); |
Harald Welte | 7fc64bc | 2019-03-02 12:55:59 +0100 | [diff] [blame] | 381 | } |