This allows the RSPRO client FSM to be used by both remsim-client as well as remsim-bankd -- both of which connect as RSPRO client to remsim-server. Change-Id: I57b5f8dc9de522b6ae8ceb030e639b5b8001b55achanges/97/13497/1
parent
228af8a19b
commit
707c85a49b
@ -0,0 +1,230 @@ |
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#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: Remsim Client connection to Bankd |
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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_ESTABLISH), |
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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(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_ESTABLISH: |
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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_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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pdu = rspro_gen_ConnectClientReq(&bc->srv_conn.own_comp_id, bc->srv_conn.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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/* re-create bankd_conn */ |
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if (bc->bankd_conn) { |
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LOGPFSML(fi, LOGL_INFO, "Destroying existing connection to bankd\n"); |
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ipa_client_conn_destroy(bc->bankd_conn); |
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bc->bankd_conn = NULL; |
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} |
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LOGPFSML(fi, LOGL_INFO, "Creating TCP connection to bankd at %s:%u\n", |
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bc->bankd_host, bc->bankd_port); |
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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 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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case BDC_E_TCP_DOWN: |
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/* wait for normal T2 timeout */ |
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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_allstate_action(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_ST_REESTABLISH: |
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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 int remsim_client_bankd_fsm_timer_cb(struct osmo_fsm_inst *fi) |
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{ |
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switch (fi->T) { |
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case 2: |
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/* TCP reconnect failed: retry */ |
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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 1: |
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/* no ClientConnectRes received: disconnect + reconnect */ |
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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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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 = 0, /* S(BDC_E_ESTABLISH) via allstate */ |
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.out_state_mask = S(BDC_ST_REESTABLISH), |
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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) | S(BDC_E_TCP_DOWN), |
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.out_state_mask = S(BDC_ST_ESTABLISHED) | S(BDC_ST_REESTABLISH), |
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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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.allstate_event_mask = S(BDC_E_ESTABLISH), |
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.allstate_action = bdc_allstate_action, |
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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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return 0; |
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} |
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static __attribute__((constructor)) void on_dso_load(void) |
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{ |
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osmo_fsm_register(&remsim_client_bankd_fsm); |
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} |
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@ -0,0 +1,40 @@ |
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#pragma once |
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#include <osmocom/core/fsm.h> |
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#include <osmocom/abis/ipa.h> |
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#include <osmocom/rspro/RsproPDU.h> |
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enum server_conn_fsm_event { |
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SRVC_E_TCP_UP, |
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SRVC_E_TCP_DOWN, |
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SRVC_E_KA_TIMEOUT, |
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SRVC_E_CLIENT_CONN_RES, |
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}; |
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struct rspro_server_conn; |
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/* representing a client-side connection to a RSPRO server */ |
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struct rspro_server_conn { |
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/* state */ |
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struct ipa_client_conn *conn; |
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struct osmo_fsm_inst *fi; |
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struct osmo_fsm_inst *keepalive_fi; |
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int (*handle_rx)(struct rspro_server_conn *conn, const RsproPDU_t *pdu); |
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/* IPA protocol identity */ |
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struct ipaccess_unit ipa_dev; |
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/* our own component ID */ |
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struct app_comp_id own_comp_id; |
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/* remote component ID */ |
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struct app_comp_id peer_comp_id; |
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/* client id and slot number */ |
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ClientSlot_t *clslot; |
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/* configuration */ |
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char *server_host; |
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uint16_t server_port; |
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}; |
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int server_conn_fsm_alloc(void *ctx, struct rspro_server_conn *srvc); |
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extern struct osmo_fsm remsim_client_server_fsm; |
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