diff options
Diffstat (limited to 'tests/e1inp_ipa_bts_test.c')
-rw-r--r-- | tests/e1inp_ipa_bts_test.c | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/tests/e1inp_ipa_bts_test.c b/tests/e1inp_ipa_bts_test.c new file mode 100644 index 0000000..28e07ab --- /dev/null +++ b/tests/e1inp_ipa_bts_test.c @@ -0,0 +1,323 @@ +#include <stdio.h> +#include <signal.h> +#include <osmocom/core/talloc.h> +#include <string.h> +#include <unistd.h> +#include <osmocom/abis/abis.h> +#include <osmocom/abis/e1_input.h> +#include <osmocom/core/logging.h> +#include <osmocom/core/application.h> +#include <osmocom/abis/ipaccess.h> +#include <osmocom/gsm/protocol/gsm_12_21.h> +#include <osmocom/gsm/ipa.h> + +static void *tall_test; +static struct e1inp_sign_link *oml_sign_link, *rsl_sign_link; + +#define DBTSTEST 0 + +struct log_info_cat bts_test_cat[] = { + [DBTSTEST] = { + .name = "DBTSTEST", + .description = "BTS-mode test", + .color = "\033[1;35m", + .enabled = 1, .loglevel = LOGL_NOTICE, + }, +}; + +const struct log_info bts_test_log_info = { + .filter_fn = NULL, + .cat = bts_test_cat, + .num_cat = ARRAY_SIZE(bts_test_cat), +}; + +enum bts_state_machine { + BTS_TEST_OML_SIGN_LINK_DOWN = 0, + BTS_TEST_OML_SIGN_LINK_UP, + BTS_TEST_OML_WAIT_SW_ACT_ACK, +}; + +static struct osmo_fd bts_eventfd; +static int eventfds[2]; + +static enum bts_state_machine bts_state = BTS_TEST_OML_SIGN_LINK_DOWN; + +static struct e1inp_sign_link * +sign_link_up(void *unit, struct e1inp_line *line, enum e1inp_sign_type type) +{ + struct e1inp_sign_link *sign_link = NULL; + + switch(type) { + case E1INP_SIGN_OML: + LOGP(DBTSTEST, LOGL_NOTICE, "OML link up request received.\n"); + + e1inp_ts_config_sign(&line->ts[E1INP_SIGN_OML - 1], line); + sign_link = oml_sign_link = + e1inp_sign_link_create(&line->ts[E1INP_SIGN_OML - 1], + E1INP_SIGN_OML, NULL, 255, 0); + if (!oml_sign_link) { + LOGP(DBTSTEST, LOGL_ERROR, + "cannot create OML sign link\n"); + } + if (oml_sign_link) { + unsigned int event_type = 0; + + /* tell GSM 12.21 that we're ready via our eventfd. */ + if (write(eventfds[1], &event_type, + sizeof(unsigned int)) < 0) { + LOGP(DBTSTEST, LOGL_ERROR, "cannot write " + "event fd.\n"); + } + /* Now we can send OML messages to the BSC. */ + bts_state = BTS_TEST_OML_SIGN_LINK_UP; + } + e1inp_ipa_bts_rsl_connect_n(line, "127.0.0.1", IPA_TCP_PORT_RSL, 0); + break; + case E1INP_SIGN_RSL: + LOGP(DBTSTEST, LOGL_NOTICE, "RSL link up request received.\n"); + + e1inp_ts_config_sign(&line->ts[E1INP_SIGN_RSL - 1], line); + + sign_link = rsl_sign_link = + e1inp_sign_link_create(&line->ts[E1INP_SIGN_RSL - 1], + E1INP_SIGN_RSL, NULL, 0, 0); + if (!rsl_sign_link) { + LOGP(DBTSTEST, LOGL_ERROR, + "cannot create RSL sign link\n"); + } + break; + default: + return NULL; + } + if (sign_link) + LOGP(DBTSTEST, LOGL_NOTICE, "signal link has been set up.\n"); + + return sign_link; +} + +static void sign_link_down(struct e1inp_line *line) +{ + LOGP(DBTSTEST, LOGL_NOTICE, "signal link has been closed\n"); + e1inp_sign_link_destroy(oml_sign_link); + e1inp_sign_link_destroy(rsl_sign_link); +} + +static int abis_nm_rcvmsg_fom(struct msgb *msg) +{ + struct abis_om_fom_hdr *foh = msgb_l3(msg); + uint8_t mt = foh->msg_type; + int ret = 0; + + switch (mt) { + case NM_MT_SW_ACT_REQ_ACK: /* SW activate request ACK from BSC. */ + LOGP(DBTSTEST, LOGL_NOTICE, "Receive SW Act Req ACK\n"); + break; + default: + LOGP(DBTSTEST, LOGL_ERROR, "unknown OML message\n"); + break; + } + return ret; +} + +static int abis_nm_rcvmsg(struct msgb *msg) +{ + int ret = 0; + struct abis_om_hdr *oh = msgb_l2(msg); + + msg->l3h = (unsigned char *)oh + sizeof(*oh); + switch (oh->mdisc) { + case ABIS_OM_MDISC_FOM: + ret = abis_nm_rcvmsg_fom(msg); + break; + default: + LOGP(DBTSTEST, LOGL_ERROR, "unknown OML message\n"); + break; + } + return ret; +} + +static int sign_link(struct msgb *msg) +{ + int ret = 0; + struct e1inp_sign_link *link = msg->dst; + + switch(link->type) { + case E1INP_SIGN_OML: + LOGP(DBTSTEST, LOGL_NOTICE, "OML message received.\n"); + ret = abis_nm_rcvmsg(msg); + break; + case E1INP_SIGN_RSL: + LOGP(DBTSTEST, LOGL_NOTICE, "RSL message received.\n"); + break; + default: + LOGP(DBTSTEST, LOGL_ERROR, "Unknown signalling message.\n"); + break; + } + msgb_free(msg); + return ret; +} + +static void fill_om_hdr(struct abis_om_hdr *oh, uint8_t len) +{ + oh->mdisc = ABIS_OM_MDISC_FOM; + oh->placement = ABIS_OM_PLACEMENT_ONLY; + oh->sequence = 0; + oh->length = len; +} + +static void fill_om_fom_hdr(struct abis_om_hdr *oh, uint8_t len, + uint8_t msg_type, uint8_t obj_class, + uint8_t bts_nr, uint8_t trx_nr, uint8_t ts_nr) +{ + struct abis_om_fom_hdr *foh = (struct abis_om_fom_hdr *) oh->data; + + fill_om_hdr(oh, len+sizeof(*foh)); + foh->msg_type = msg_type; + foh->obj_class = obj_class; + foh->obj_inst.bts_nr = bts_nr; + foh->obj_inst.trx_nr = trx_nr; + foh->obj_inst.ts_nr = ts_nr; +} + +#define OM_ALLOC_SIZE 1024 +#define OM_HEADROOM_SIZE 128 + +static struct msgb *nm_msgb_alloc(void) +{ + return msgb_alloc_headroom(OM_ALLOC_SIZE, OM_HEADROOM_SIZE, "BTS/test"); +} + +static int abis_nm_sw_act_req(struct e1inp_sign_link *sign_link, + uint8_t obj_class, + uint8_t i1, uint8_t i2, uint8_t i3, + uint8_t *attr, int att_len) +{ + struct abis_om_hdr *oh; + struct msgb *msg = nm_msgb_alloc(); + uint8_t msgtype = NM_MT_SW_ACT_REQ; + + oh = (struct abis_om_hdr *) msgb_put(msg, ABIS_OM_FOM_HDR_SIZE); + fill_om_fom_hdr(oh, att_len, msgtype, obj_class, i1, i2, i3); + + if (attr) { + uint8_t *ptr = msgb_put(msg, att_len); + memcpy(ptr, attr, att_len); + } + msg->dst = sign_link; + return abis_sendmsg(msg); +} + +static int test_bts_gsm_12_21_cb(struct osmo_fd *ofd, unsigned int what) +{ + int ret, event_type; + struct ipaccess_unit *unit = ofd->data; + + if (read(eventfds[0], &event_type, sizeof(unsigned int)) < 0) { + LOGP(DBTSTEST, LOGL_ERROR, "error receiving event\n"); + return 0; + } + + switch(bts_state) { + case BTS_TEST_OML_SIGN_LINK_DOWN: + /* Do nothing until OML link becomes ready. */ + break; + case BTS_TEST_OML_SIGN_LINK_UP: + /* OML link is up, send SW ACT REQ. */ + ret = abis_nm_sw_act_req(oml_sign_link, 0, + unit->bts_id, + unit->trx_id, + 0, NULL, 0); + if (ret < 0) { + LOGP(DBTSTEST, LOGL_ERROR, "cannot send SW ACT REQ\n"); + break; + } + bts_state = BTS_TEST_OML_WAIT_SW_ACT_ACK; + break; + case BTS_TEST_OML_WAIT_SW_ACT_ACK: + /* ... things should continue after this. */ + break; + } + return 0; +} + +static struct e1inp_line *line; + +static void sighandler(int foo) +{ + e1inp_line_put(line); + exit(EXIT_SUCCESS); +} + +int main(void) +{ + struct ipaccess_unit bts_dev_info = { + .site_id = 1801, + .bts_id = 0, + .trx_id = 0, + .unit_name = "testBTS", + .equipvers = "0.1", + .swversion = "0.1", + .mac_addr = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + .location1 = "testBTS", + .location2 = "testBTS", + .serno = "", + }; + + tall_test = talloc_named_const(NULL, 1, "e1inp_test"); + libosmo_abis_init(tall_test); + + osmo_init_logging(&bts_test_log_info); + + struct e1inp_line_ops ops = { + .cfg = { + .ipa = { + .role = E1INP_LINE_R_BTS, + .addr = "127.0.0.1", + .dev = &bts_dev_info, + }, + }, + .sign_link_up = sign_link_up, + .sign_link_down = sign_link_down, + .sign_link = sign_link, + }; + +#define LINENR 0 + + if (signal(SIGINT, sighandler) == SIG_ERR || + signal(SIGTERM, sighandler) == SIG_ERR) { + perror("Cannot set sighandler"); + exit(EXIT_FAILURE); + } + + line = e1inp_line_create(LINENR, "ipa"); + if (line == NULL) { + LOGP(DBTSTEST, LOGL_ERROR, "problem enabling E1 line\n"); + exit(EXIT_FAILURE); + } + e1inp_line_bind_ops(line, &ops); + + if (e1inp_line_update(line) < 0) { + LOGP(DBTSTEST, LOGL_ERROR, "problem enabling E1 line\n"); + exit(EXIT_FAILURE); + } + + LOGP(DBTSTEST, LOGL_NOTICE, "entering main loop\n"); + + if (pipe(eventfds) < 0) { + LOGP(DBTSTEST, LOGL_ERROR, "cannot create pipe fds\n"); + exit(EXIT_FAILURE); + } + bts_eventfd.fd = eventfds[0]; + bts_eventfd.cb = test_bts_gsm_12_21_cb; + bts_eventfd.when = BSC_FD_READ; + bts_eventfd.data = &bts_dev_info; + if (osmo_fd_register(&bts_eventfd) < 0) { + LOGP(DBTSTEST, LOGL_ERROR, "could not register event fd\n"); + exit(EXIT_FAILURE); + } + + while (1) { + osmo_select_main(0); + } + return 0; +} |