Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 1 | #include <stdint.h> |
| 2 | #include <string.h> |
| 3 | #include <errno.h> |
| 4 | |
| 5 | #include <talloc.h> |
| 6 | |
| 7 | #include <osmocom/core/logging.h> |
| 8 | #include <osmocom/core/utils.h> |
| 9 | #include <osmocom/core/msgb.h> |
| 10 | #include <osmocom/core/fsm.h> |
| 11 | |
| 12 | #include <osmocom/abis/ipa.h> |
| 13 | #include <osmocom/gsm/protocol/ipaccess.h> |
| 14 | |
| 15 | #include "client.h" |
| 16 | #include "rspro_util.h" |
| 17 | |
| 18 | #define S(x) (1 << (x)) |
| 19 | |
| 20 | static void bankd_updown_cb(struct ipa_client_conn *conn, int up) |
| 21 | { |
| 22 | struct bankd_client *bc = conn->data; |
| 23 | |
| 24 | printf("RSPRO link to %s:%d %s\n", conn->addr, conn->port, up ? "UP" : "DOWN"); |
| 25 | |
| 26 | osmo_fsm_inst_dispatch(bc->bankd_fi, up ? BDC_E_TCP_UP: BDC_E_TCP_DOWN, 0); |
| 27 | } |
| 28 | |
| 29 | /*********************************************************************** |
| 30 | * bankd connection FSM |
| 31 | ***********************************************************************/ |
| 32 | |
| 33 | enum bankd_conn_fsm_state { |
| 34 | /* waiting for initial connectiong to remsim-bankd */ |
| 35 | BDC_ST_INIT, |
| 36 | /* bankd connection established, waiting for ClientConnectRes */ |
| 37 | BDC_ST_ESTABLISHED, |
| 38 | /* bankd connection etsablished, ClientConnect succeeded */ |
| 39 | BDC_ST_CONNECTED, |
| 40 | /* connection lost, we're waiting for a re-establish */ |
| 41 | BDC_ST_REESTABLISH, |
| 42 | }; |
| 43 | |
| 44 | static const struct value_string remsim_client_bankd_fsm_event_names[] = { |
| 45 | OSMO_VALUE_STRING(BDC_E_TCP_UP), |
| 46 | OSMO_VALUE_STRING(BDC_E_TCP_DOWN), |
| 47 | OSMO_VALUE_STRING(BDC_E_CLIENT_CONN_RES), |
| 48 | { 0, NULL } |
| 49 | }; |
| 50 | |
| 51 | #define T1_WAIT_CLIENT_CONN_RES 10 |
| 52 | #define T2_RECONNECT 10 |
| 53 | |
| 54 | |
| 55 | static void bdc_st_init_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state) |
| 56 | { |
| 57 | struct bankd_client *bc = (struct bankd_client *) fi->priv; |
| 58 | int rc; |
| 59 | |
| 60 | printf("onenter\n"); |
| 61 | bc->bankd_conn = ipa_client_conn_create(bc, NULL, 0, bc->bankd_host, bc->bankd_port, |
| 62 | bankd_updown_cb, bankd_read_cb, NULL, bc); |
| 63 | if (!bc->bankd_conn) { |
| 64 | fprintf(stderr, "Unable to create socket: %s\n", strerror(errno)); |
| 65 | exit(1); |
| 66 | } |
| 67 | /* Attempt to connect TCP socket */ |
| 68 | rc = ipa_client_conn_open(bc->bankd_conn); |
| 69 | if (rc < 0) { |
| 70 | fprintf(stderr, "Unable to connect: %s\n", strerror(errno)); |
| 71 | exit(1); |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | static void bdc_st_init(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 76 | { |
| 77 | switch (event) { |
| 78 | case BDC_E_TCP_UP: |
| 79 | osmo_fsm_inst_state_chg(fi, BDC_ST_ESTABLISHED, T1_WAIT_CLIENT_CONN_RES, 1); |
| 80 | break; |
| 81 | default: |
| 82 | OSMO_ASSERT(0); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | static void bdc_st_established_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state) |
| 87 | { |
| 88 | struct bankd_client *bc = (struct bankd_client *) fi->priv; |
| 89 | RsproPDU_t *pdu; |
| 90 | |
| 91 | /* FIXME: Send ClientConnReq */ |
| 92 | const ClientSlot_t clslot = { .clientId = 23, .slotNr = 1 }; |
| 93 | pdu = rspro_gen_ConnectClientReq(&bc->own_comp_id, &clslot); |
Harald Welte | f29e0d0 | 2018-08-24 21:42:22 +0200 | [diff] [blame^] | 94 | ipa_client_conn_send_rspro(bc->bankd_conn, pdu); |
Harald Welte | 24173fb | 2018-08-24 20:37:28 +0200 | [diff] [blame] | 95 | } |
| 96 | |
| 97 | static void bdc_st_established(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 98 | { |
| 99 | switch (event) { |
| 100 | case BDC_E_TCP_DOWN: |
| 101 | osmo_fsm_inst_state_chg(fi, BDC_ST_REESTABLISH, T2_RECONNECT, 2); |
| 102 | break; |
| 103 | case BDC_E_CLIENT_CONN_RES: |
| 104 | /* somehow notify the main code? */ |
| 105 | osmo_fsm_inst_state_chg(fi, BDC_ST_CONNECTED, 0, 0); |
| 106 | break; |
| 107 | default: |
| 108 | OSMO_ASSERT(0); |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | static void bdc_st_connected(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 113 | { |
| 114 | switch (event) { |
| 115 | case BDC_E_TCP_DOWN: |
| 116 | osmo_fsm_inst_state_chg(fi, BDC_ST_REESTABLISH, T2_RECONNECT, 2); |
| 117 | break; |
| 118 | default: |
| 119 | OSMO_ASSERT(0); |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | static void bdc_st_reestablish_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state) |
| 124 | { |
| 125 | struct bankd_client *bc = (struct bankd_client *) fi->priv; |
| 126 | int rc; |
| 127 | |
| 128 | /* Attempt to connect TCP socket */ |
| 129 | rc = ipa_client_conn_open(bc->bankd_conn); |
| 130 | if (rc < 0) { |
| 131 | fprintf(stderr, "Unable to connect RSPRO to %s:%d - %s\n", |
| 132 | bc->bankd_conn->addr, bc->bankd_conn->port, strerror(errno)); |
| 133 | /* FIXME: retry? Timer? Abort? */ |
| 134 | OSMO_ASSERT(0); |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | static void bdc_st_reestablish(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 139 | { |
| 140 | switch (event) { |
| 141 | case BDC_E_TCP_UP: |
| 142 | osmo_fsm_inst_state_chg(fi, BDC_ST_ESTABLISHED, T1_WAIT_CLIENT_CONN_RES, 1); |
| 143 | break; |
| 144 | default: |
| 145 | OSMO_ASSERT(0); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | static int remsim_client_bankd_fsm_timer_cb(struct osmo_fsm_inst *fi) |
| 150 | { |
| 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | static const struct osmo_fsm_state bankd_conn_fsm_states[] = { |
| 155 | [BDC_ST_INIT] = { |
| 156 | .name = "INIT", |
| 157 | .in_event_mask = S(BDC_E_TCP_UP), |
| 158 | .out_state_mask = S(BDC_ST_ESTABLISHED), |
| 159 | .action = bdc_st_init, |
| 160 | }, |
| 161 | [BDC_ST_ESTABLISHED] = { |
| 162 | .name = "ESTABLISHED", |
| 163 | .in_event_mask = S(BDC_E_TCP_DOWN) | S(BDC_E_CLIENT_CONN_RES), |
| 164 | .out_state_mask = S(BDC_ST_CONNECTED) | S(BDC_ST_REESTABLISH), |
| 165 | .action = bdc_st_established, |
| 166 | .onenter = bdc_st_established_onenter, |
| 167 | }, |
| 168 | [BDC_ST_CONNECTED] = { |
| 169 | .name = "CONNECTED", |
| 170 | .in_event_mask = S(BDC_E_TCP_DOWN), |
| 171 | .out_state_mask = S(BDC_ST_REESTABLISH), |
| 172 | .action = bdc_st_connected, |
| 173 | }, |
| 174 | [BDC_ST_REESTABLISH] = { |
| 175 | .name = "REESTABLISH", |
| 176 | .in_event_mask = S(BDC_E_TCP_UP), |
| 177 | .out_state_mask = S(BDC_ST_ESTABLISHED), |
| 178 | .action = bdc_st_reestablish, |
| 179 | .onenter = bdc_st_reestablish_onenter, |
| 180 | }, |
| 181 | }; |
| 182 | |
| 183 | struct osmo_fsm remsim_client_bankd_fsm = { |
| 184 | .name = "BANKD_CONN", |
| 185 | .states = bankd_conn_fsm_states, |
| 186 | .num_states = ARRAY_SIZE(bankd_conn_fsm_states), |
| 187 | .timer_cb = remsim_client_bankd_fsm_timer_cb, |
| 188 | .log_subsys = DMAIN, |
| 189 | .event_names = remsim_client_bankd_fsm_event_names, |
| 190 | }; |
| 191 | |
| 192 | int bankd_conn_fsm_alloc(struct bankd_client *bc) |
| 193 | { |
| 194 | struct osmo_fsm_inst *fi; |
| 195 | |
| 196 | fi = osmo_fsm_inst_alloc(&remsim_client_bankd_fsm, bc, bc, LOGL_DEBUG, "bankd"); |
| 197 | if (!fi) |
| 198 | return -1; |
| 199 | |
| 200 | bc->bankd_fi = fi; |
| 201 | /* onenter of the initial state is not automatically executed by osmo_fsm :( */ |
| 202 | bdc_st_init_onenter(fi, 0); |
| 203 | return 0; |
| 204 | } |
| 205 | |
| 206 | /*********************************************************************** |
| 207 | * server connection FSM |
| 208 | ***********************************************************************/ |
| 209 | |
| 210 | enum server_conn_fsm_state { |
| 211 | /* waiting for initial connectiong to remsim-server */ |
| 212 | SRVC_ST_INIT, |
| 213 | /* server connection established, waiting for ClientConnectRes */ |
| 214 | SRVC_ST_ESTABLISHED, |
| 215 | /* server connection etsablished, ClientConnect succeeded */ |
| 216 | SRVC_ST_CONNECTED, |
| 217 | /* connection lost, we're waiting for a re-establish */ |
| 218 | SRVC_ST_REESTABLISH, |
| 219 | }; |
| 220 | |
| 221 | static const struct value_string server_conn_fsm_event_names[] = { |
| 222 | OSMO_VALUE_STRING(SRVC_E_TCP_UP), |
| 223 | OSMO_VALUE_STRING(SRVC_E_TCP_DOWN), |
| 224 | OSMO_VALUE_STRING(SRVC_E_CLIENT_CONN_RES), |
| 225 | { 0, NULL } |
| 226 | }; |
| 227 | |
| 228 | |
| 229 | static void srvc_st_init(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 230 | { |
| 231 | } |
| 232 | |
| 233 | static void srvc_st_established(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 234 | { |
| 235 | } |
| 236 | |
| 237 | static void srvc_st_connected(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 238 | { |
| 239 | } |
| 240 | |
| 241 | static void srvc_st_reestablish(struct osmo_fsm_inst *fi, uint32_t event, void *data) |
| 242 | { |
| 243 | } |
| 244 | |
| 245 | static int server_conn_fsm_timer_cb(struct osmo_fsm_inst *fi) |
| 246 | { |
| 247 | return 0; |
| 248 | } |
| 249 | |
| 250 | static const struct osmo_fsm_state server_conn_fsm_states[] = { |
| 251 | [SRVC_ST_INIT] = { |
| 252 | .name = "INIT", |
| 253 | .in_event_mask = S(SRVC_E_TCP_UP), |
| 254 | .out_state_mask = S(SRVC_ST_ESTABLISHED), |
| 255 | .action = srvc_st_init, |
| 256 | }, |
| 257 | [SRVC_ST_ESTABLISHED] = { |
| 258 | .name = "ESTABLISHED", |
| 259 | .in_event_mask = S(SRVC_E_TCP_DOWN) | S(SRVC_E_CLIENT_CONN_RES), |
| 260 | .out_state_mask = S(SRVC_ST_CONNECTED) | S(SRVC_ST_REESTABLISH), |
| 261 | .action = srvc_st_established, |
| 262 | }, |
| 263 | [SRVC_ST_CONNECTED] = { |
| 264 | .name = "CONNECTED", |
| 265 | .in_event_mask = S(SRVC_E_TCP_DOWN), |
| 266 | .out_state_mask = S(SRVC_ST_REESTABLISH), |
| 267 | .action = srvc_st_connected, |
| 268 | }, |
| 269 | [SRVC_ST_REESTABLISH] = { |
| 270 | .name = "REESTABLISH", |
| 271 | .in_event_mask = S(SRVC_E_TCP_UP), |
| 272 | .out_state_mask = S(SRVC_ST_ESTABLISHED), |
| 273 | .action = srvc_st_reestablish, |
| 274 | }, |
| 275 | }; |
| 276 | |
| 277 | struct osmo_fsm remsim_client_server_fsm = { |
| 278 | .name = "SERVER_CONN", |
| 279 | .states = server_conn_fsm_states, |
| 280 | .num_states = ARRAY_SIZE(server_conn_fsm_states), |
| 281 | .timer_cb = server_conn_fsm_timer_cb, |
| 282 | .log_subsys = DMAIN, |
| 283 | .event_names = server_conn_fsm_event_names, |
| 284 | }; |
| 285 | |
| 286 | int server_conn_fsm_alloc(struct bankd_client *bc) |
| 287 | { |
| 288 | struct osmo_fsm_inst *fi; |
| 289 | |
| 290 | fi = osmo_fsm_inst_alloc(&remsim_client_server_fsm, bc, bc, LOGL_DEBUG, "server"); |
| 291 | if (!fi) |
| 292 | return -1; |
| 293 | |
| 294 | bc->srv_fi = fi; |
| 295 | /* onenter of the initial state is not automatically executed by osmo_fsm :( */ |
| 296 | ///srvc_st_init_onenter(fi, 0); |
| 297 | return 0; |
| 298 | } |