int e1_reconfig_bts(struct gsm_bts *bts)
{
struct gsm_e1_subslot *e1_link = &bts->oml_e1_link;
struct e1inp_ts *sign_ts;
struct e1inp_line *line;
struct e1inp_sign_link *oml_link;
struct gsm_bts_trx *trx;
struct timespec tp;
int rc;
DEBUGP(DLMI, "e1_reconfig_bts(%u)\n", bts->nr);
line = e1inp_line_find(e1_link->e1_nr);
if (!line) {
LOGP(DLINP, LOGL_ERROR, "BTS %u OML link referring to "
"non-existing E1 line %u\n", bts->nr, e1_link->e1_nr);
return -ENOMEM;
}
if (!bts->model->e1line_bind_ops) {
LOGP(DLINP, LOGL_ERROR, "no callback to bind E1 line operations\n");
return -EINVAL;
}
if (!line->ops)
bts->model->e1line_bind_ops(line);
/* skip signal link initialization, this is done later for these BTS. */
if (bts->type == GSM_BTS_TYPE_NANOBTS ||
bts->type == GSM_BTS_TYPE_OSMOBTS)
return e1inp_line_update(line);
/* OML link */
if (!e1_link->e1_ts) {
LOGP(DLINP, LOGL_ERROR, "BTS %u OML link without timeslot?\n",
bts->nr);
return -EINVAL;
}
sign_ts = &line->ts[e1_link->e1_ts-1];
e1inp_ts_config_sign(sign_ts, line);
oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML,
bts->c0, bts->oml_tei, SAPI_OML);
if (!oml_link) {
LOGP(DLINP, LOGL_ERROR, "BTS %u OML link creation failed\n",
bts->nr);
return -ENOMEM;
}
if (bts->oml_link)
e1inp_sign_link_destroy(bts->oml_link);
bts->oml_link = oml_link;
rc = clock_gettime(CLOCK_MONOTONIC, &tp);
bts->uptime = (rc < 0) ? 0 : tp.tv_sec; /* we don't need sub-second precision for uptime */
llist_for_each_entry(trx, &bts->trx_list, list)
e1_reconfig_trx(trx);
/* notify E1 input something has changed */
return e1inp_line_update(line);
}
int e1_reconfig_trx(struct gsm_bts_trx *trx)
{
struct gsm_e1_subslot *e1_link = &trx->rsl_e1_link;
struct e1inp_ts *sign_ts;
struct e1inp_line *line;
struct e1inp_sign_link *rsl_link;
int i;
if (!e1_link->e1_ts) {
LOGP(DLINP, LOGL_ERROR, "TRX (%u/%u) RSL link without "
"timeslot?\n", trx->bts->nr, trx->nr);
return -EINVAL;
}
/* RSL Link */
line = e1inp_line_find(e1_link->e1_nr);
if (!line) {
LOGP(DLINP, LOGL_ERROR, "TRX (%u/%u) RSL link referring "
"to non-existing E1 line %u\n", trx->bts->nr,
trx->nr, e1_link->e1_nr);
return -ENOMEM;
}
sign_ts = &line->ts[e1_link->e1_ts-1];
e1inp_ts_config_sign(sign_ts, line);
/* Ericsson RBS have a per-TRX OML link in parallel to RSL */
if (trx->bts->type == GSM_BTS_TYPE_RBS2000) {
struct e1inp_sign_link *oml_link;
oml_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_OML, trx,
trx->rsl_tei, SAPI_OML);
if (!oml_link) {
LOGP(DLINP, LOGL_ERROR, "TRX (%u/%u) OML link creation "
"failed\n", trx->bts->nr, trx->nr);
return -ENOMEM;
}
if (trx->oml_link)
e1inp_sign_link_destroy(trx->oml_link);
trx->oml_link = oml_link;
}
rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL,
trx, trx->rsl_tei, SAPI_RSL);
if (!rsl_link) {
LOGP(DLINP, LOGL_ERROR, "TRX (%u/%u) RSL link creation "
"failed\n", trx->bts->nr, trx->nr);
return -ENOMEM;
}
if (trx->rsl_link)
e1inp_sign_link_destroy(trx->rsl_link);
trx->rsl_link = rsl_link;
for (i = 0; i < TRX_NR_TS; i++)
e1_reconfig_ts(&trx->ts[i]);
return 0;
}
/* callback of the OML listening filedescriptor */
static int listen_fd_cb(struct osmo_fd *listen_bfd, unsigned int what)
{
int ret;
int idx = 0;
int i;
struct e1inp_line *line;
struct e1inp_ts *e1i_ts;
struct osmo_fd *bfd;
struct sockaddr_in sa;
socklen_t sa_len = sizeof(sa);
if (!(what & BSC_FD_READ))
return 0;
ret = accept(listen_bfd->fd, (struct sockaddr *) &sa, &sa_len);
if (ret < 0) {
perror("accept");
return ret;
}
LOGP(DLINP, LOGL_NOTICE, "accept()ed new HSL link from %s\n",
inet_ntoa(sa.sin_addr));
/* clone virtual E1 line for this new signalling link. */
line = e1inp_line_clone(tall_hsl_ctx, listen_bfd->data);
if (line == NULL) {
LOGP(DLINP, LOGL_ERROR, "could not clone E1 line\n");
return -1;
}
/* create virrtual E1 timeslots for signalling */
e1inp_ts_config_sign(&line->ts[1-1], line);
/* initialize the fds */
for (i = 0; i < ARRAY_SIZE(line->ts); ++i)
line->ts[i].driver.ipaccess.fd.fd = -1;
e1i_ts = &line->ts[idx];
bfd = &e1i_ts->driver.ipaccess.fd;
bfd->fd = ret;
bfd->data = line;
bfd->priv_nr = PRIV_OML;
bfd->cb = hsl_fd_cb;
bfd->when = BSC_FD_READ;
ret = osmo_fd_register(bfd);
if (ret < 0) {
LOGP(DLINP, LOGL_ERROR, "could not register FD\n");
close(bfd->fd);
e1inp_line_put(line);
return ret;
}
return ret;
}
