299 lines
7.8 KiB
C
299 lines
7.8 KiB
C
#include <stdint.h>
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#include <string.h>
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#include <errno.h>
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#include <talloc.h>
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#include <osmocom/core/logging.h>
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#include <osmocom/core/utils.h>
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#include <osmocom/core/msgb.h>
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#include <osmocom/core/fsm.h>
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#include <osmocom/abis/ipa.h>
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#include <osmocom/gsm/protocol/ipaccess.h>
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#include "client.h"
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#include "rspro_util.h"
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#define S(x) (1 << (x))
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static void bankd_updown_cb(struct ipa_client_conn *conn, int up)
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{
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struct bankd_client *bc = conn->data;
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printf("RSPRO link to %s:%d %s\n", conn->addr, conn->port, up ? "UP" : "DOWN");
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osmo_fsm_inst_dispatch(bc->bankd_fi, up ? BDC_E_TCP_UP: BDC_E_TCP_DOWN, 0);
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}
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/***********************************************************************
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* bankd connection FSM
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***********************************************************************/
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enum bankd_conn_fsm_state {
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/* waiting for initial connectiong to remsim-bankd */
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BDC_ST_INIT,
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/* bankd connection established, waiting for ClientConnectRes */
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BDC_ST_ESTABLISHED,
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/* bankd connection etsablished, ClientConnect succeeded */
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BDC_ST_CONNECTED,
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/* connection lost, we're waiting for a re-establish */
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BDC_ST_REESTABLISH,
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};
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static const struct value_string remsim_client_bankd_fsm_event_names[] = {
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OSMO_VALUE_STRING(BDC_E_TCP_UP),
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OSMO_VALUE_STRING(BDC_E_TCP_DOWN),
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OSMO_VALUE_STRING(BDC_E_CLIENT_CONN_RES),
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{ 0, NULL }
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};
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#define T1_WAIT_CLIENT_CONN_RES 10
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#define T2_RECONNECT 10
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static void bdc_st_init_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state)
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{
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struct bankd_client *bc = (struct bankd_client *) fi->priv;
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int rc;
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printf("onenter\n");
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bc->bankd_conn = ipa_client_conn_create(bc, NULL, 0, bc->bankd_host, bc->bankd_port,
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bankd_updown_cb, bankd_read_cb, NULL, bc);
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if (!bc->bankd_conn) {
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fprintf(stderr, "Unable to create socket: %s\n", strerror(errno));
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exit(1);
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}
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/* Attempt to connect TCP socket */
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rc = ipa_client_conn_open(bc->bankd_conn);
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if (rc < 0) {
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fprintf(stderr, "Unable to connect: %s\n", strerror(errno));
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exit(1);
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}
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}
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static void bdc_st_init(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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switch (event) {
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case BDC_E_TCP_UP:
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osmo_fsm_inst_state_chg(fi, BDC_ST_ESTABLISHED, T1_WAIT_CLIENT_CONN_RES, 1);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static void bdc_st_established_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state)
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{
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struct bankd_client *bc = (struct bankd_client *) fi->priv;
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RsproPDU_t *pdu;
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/* FIXME: Send ClientConnReq */
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const ClientSlot_t clslot = { .clientId = 23, .slotNr = 1 };
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pdu = rspro_gen_ConnectClientReq(&bc->own_comp_id, &clslot);
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ipa_client_conn_send_rspro(bc->bankd_conn, pdu);
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}
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static void bdc_st_established(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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switch (event) {
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case BDC_E_TCP_DOWN:
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osmo_fsm_inst_state_chg(fi, BDC_ST_REESTABLISH, T2_RECONNECT, 2);
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break;
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case BDC_E_CLIENT_CONN_RES:
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/* somehow notify the main code? */
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osmo_fsm_inst_state_chg(fi, BDC_ST_CONNECTED, 0, 0);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static void bdc_st_connected(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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switch (event) {
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case BDC_E_TCP_DOWN:
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osmo_fsm_inst_state_chg(fi, BDC_ST_REESTABLISH, T2_RECONNECT, 2);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static void bdc_st_reestablish_onenter(struct osmo_fsm_inst *fi, uint32_t prev_state)
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{
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struct bankd_client *bc = (struct bankd_client *) fi->priv;
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int rc;
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/* Attempt to connect TCP socket */
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rc = ipa_client_conn_open(bc->bankd_conn);
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if (rc < 0) {
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fprintf(stderr, "Unable to connect RSPRO to %s:%d - %s\n",
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bc->bankd_conn->addr, bc->bankd_conn->port, strerror(errno));
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/* FIXME: retry? Timer? Abort? */
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OSMO_ASSERT(0);
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}
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}
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static void bdc_st_reestablish(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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switch (event) {
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case BDC_E_TCP_UP:
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osmo_fsm_inst_state_chg(fi, BDC_ST_ESTABLISHED, T1_WAIT_CLIENT_CONN_RES, 1);
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break;
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default:
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OSMO_ASSERT(0);
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}
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}
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static int remsim_client_bankd_fsm_timer_cb(struct osmo_fsm_inst *fi)
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{
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return 0;
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}
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static const struct osmo_fsm_state bankd_conn_fsm_states[] = {
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[BDC_ST_INIT] = {
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.name = "INIT",
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.in_event_mask = S(BDC_E_TCP_UP),
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.out_state_mask = S(BDC_ST_ESTABLISHED),
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.action = bdc_st_init,
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},
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[BDC_ST_ESTABLISHED] = {
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.name = "ESTABLISHED",
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.in_event_mask = S(BDC_E_TCP_DOWN) | S(BDC_E_CLIENT_CONN_RES),
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.out_state_mask = S(BDC_ST_CONNECTED) | S(BDC_ST_REESTABLISH),
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.action = bdc_st_established,
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.onenter = bdc_st_established_onenter,
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},
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[BDC_ST_CONNECTED] = {
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.name = "CONNECTED",
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.in_event_mask = S(BDC_E_TCP_DOWN),
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.out_state_mask = S(BDC_ST_REESTABLISH),
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.action = bdc_st_connected,
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},
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[BDC_ST_REESTABLISH] = {
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.name = "REESTABLISH",
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.in_event_mask = S(BDC_E_TCP_UP),
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.out_state_mask = S(BDC_ST_ESTABLISHED),
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.action = bdc_st_reestablish,
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.onenter = bdc_st_reestablish_onenter,
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},
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};
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struct osmo_fsm remsim_client_bankd_fsm = {
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.name = "BANKD_CONN",
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.states = bankd_conn_fsm_states,
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.num_states = ARRAY_SIZE(bankd_conn_fsm_states),
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.timer_cb = remsim_client_bankd_fsm_timer_cb,
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.log_subsys = DMAIN,
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.event_names = remsim_client_bankd_fsm_event_names,
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};
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int bankd_conn_fsm_alloc(struct bankd_client *bc)
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{
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struct osmo_fsm_inst *fi;
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fi = osmo_fsm_inst_alloc(&remsim_client_bankd_fsm, bc, bc, LOGL_DEBUG, "bankd");
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if (!fi)
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return -1;
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bc->bankd_fi = fi;
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/* onenter of the initial state is not automatically executed by osmo_fsm :( */
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bdc_st_init_onenter(fi, 0);
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return 0;
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}
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/***********************************************************************
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* server connection FSM
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***********************************************************************/
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enum server_conn_fsm_state {
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/* waiting for initial connectiong to remsim-server */
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SRVC_ST_INIT,
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/* server connection established, waiting for ClientConnectRes */
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SRVC_ST_ESTABLISHED,
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/* server connection etsablished, ClientConnect succeeded */
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SRVC_ST_CONNECTED,
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/* connection lost, we're waiting for a re-establish */
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SRVC_ST_REESTABLISH,
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};
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static const struct value_string server_conn_fsm_event_names[] = {
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OSMO_VALUE_STRING(SRVC_E_TCP_UP),
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OSMO_VALUE_STRING(SRVC_E_TCP_DOWN),
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OSMO_VALUE_STRING(SRVC_E_CLIENT_CONN_RES),
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{ 0, NULL }
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};
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static void srvc_st_init(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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}
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static void srvc_st_established(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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}
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static void srvc_st_connected(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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}
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static void srvc_st_reestablish(struct osmo_fsm_inst *fi, uint32_t event, void *data)
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{
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}
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static int server_conn_fsm_timer_cb(struct osmo_fsm_inst *fi)
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{
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return 0;
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}
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static const struct osmo_fsm_state server_conn_fsm_states[] = {
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[SRVC_ST_INIT] = {
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.name = "INIT",
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.in_event_mask = S(SRVC_E_TCP_UP),
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.out_state_mask = S(SRVC_ST_ESTABLISHED),
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.action = srvc_st_init,
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},
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[SRVC_ST_ESTABLISHED] = {
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.name = "ESTABLISHED",
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.in_event_mask = S(SRVC_E_TCP_DOWN) | S(SRVC_E_CLIENT_CONN_RES),
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.out_state_mask = S(SRVC_ST_CONNECTED) | S(SRVC_ST_REESTABLISH),
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.action = srvc_st_established,
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},
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[SRVC_ST_CONNECTED] = {
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.name = "CONNECTED",
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.in_event_mask = S(SRVC_E_TCP_DOWN),
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.out_state_mask = S(SRVC_ST_REESTABLISH),
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.action = srvc_st_connected,
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},
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[SRVC_ST_REESTABLISH] = {
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.name = "REESTABLISH",
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.in_event_mask = S(SRVC_E_TCP_UP),
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.out_state_mask = S(SRVC_ST_ESTABLISHED),
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.action = srvc_st_reestablish,
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},
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};
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struct osmo_fsm remsim_client_server_fsm = {
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.name = "SERVER_CONN",
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.states = server_conn_fsm_states,
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.num_states = ARRAY_SIZE(server_conn_fsm_states),
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.timer_cb = server_conn_fsm_timer_cb,
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.log_subsys = DMAIN,
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.event_names = server_conn_fsm_event_names,
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};
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int server_conn_fsm_alloc(struct bankd_client *bc)
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{
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struct osmo_fsm_inst *fi;
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fi = osmo_fsm_inst_alloc(&remsim_client_server_fsm, bc, bc, LOGL_DEBUG, "server");
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if (!fi)
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return -1;
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bc->srv_fi = fi;
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/* onenter of the initial state is not automatically executed by osmo_fsm :( */
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///srvc_st_init_onenter(fi, 0);
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return 0;
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}
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