src: port openBSC over libosmo-abis
This is a big patch that ports openBSC over libosmo-abis.
Sorry, the changes that are included here are all dependent
of libosmo-abis, splitting them into smaller pieces would
leave the repository in some intermediate state, which is
not desired.
The main changes are:
- The directory libabis/ has been removed as it now lives in
libosmo-abis.
- new configuration file format for nanoBTS and HSL femto, we
need to define the virtual e1_line and attach it to the OML
link.
- all the existing BTS drivers (nanoBTS, hsl femto, Nokia site,
BS11 and rbs2000) now use the new libosmo-abis framework.
- use r232 input driver available in libosmo-abis for bs11_config.
- use ipa_msg_recv instead of old ipaccess_read_msg function.
- delete definition of gsm_e1_subslot and input_signal_data.
These structures now lives in libosmo-abis.
Most of this patch are deletions of libabis/ which has been
moved to libosmo-abis.
This patch also modifies openBSC to use all the new definitions
available in libosmocore and libosmo-abis. In order to do that,
we have replaced the following:
- DINP, DMI, DMIB and DMUX by their respective DL* correspondences.
- SS_GLOBAL by SS_L_GLOBAL
- SS_INPUT by SS_L_INPUT
- S_GLOBAL_SHUTDOWN by S_L_GLOBAL_SHUTDOWN
- SS_INPUT by SS_L_INPUT
- S_INP_* by S_L_INP_* sub-signals
- E1INP_NODE by L_E1INP_NODE vty node
This patch has been tested with:
- one nanoBTS
- the HSL femto with the examples available under libosmo-abis
- BS11 with both dahdi and misdn drivers.
diff --git a/openbsc/src/libbsc/bts_hsl_femtocell.c b/openbsc/src/libbsc/bts_hsl_femtocell.c
index 8463202..ebab34a 100644
--- a/openbsc/src/libbsc/bts_hsl_femtocell.c
+++ b/openbsc/src/libbsc/bts_hsl_femtocell.c
@@ -28,13 +28,18 @@
#include <openbsc/abis_nm.h>
#include <openbsc/abis_rsl.h>
#include <openbsc/signal.h>
-#include <openbsc/e1_input.h>
+#include <openbsc/debug.h>
+#include <osmocom/core/logging.h>
+#include <osmocom/abis/e1_input.h>
+#include <osmocom/abis/ipaccess.h>
static int bts_model_hslfemto_start(struct gsm_network *net);
+static void bts_model_hslfemto_e1line_bind_ops(struct e1inp_line *line);
static struct gsm_bts_model model_hslfemto = {
.type = GSM_BTS_TYPE_HSL_FEMTO,
.start = bts_model_hslfemto_start,
+ .e1line_bind_ops = &bts_model_hslfemto_e1line_bind_ops,
.nm_att_tlvdef = {
.def = {
/* no HSL specific OML attributes that we know of */
@@ -121,7 +126,7 @@
cur = msgb_put(msg, sizeof(oml_arfcn_bsic));
memcpy(msg->data, oml_arfcn_bsic, sizeof(oml_arfcn_bsic));
msg->dst = bts->c0->rsl_link;
- _abis_nm_sendmsg(msg, 0);
+ abis_sendmsg(msg);
/* Delay the OPSTART until after SI have been set via RSL */
//abis_nm_opstart(bts, NM_OC_BTS, 255, 255, 255);
@@ -135,11 +140,11 @@
{
struct input_signal_data *isd = signal_data;
- if (subsys != SS_INPUT)
+ if (subsys != SS_L_INPUT)
return 0;
switch (signal) {
- case S_INP_TEI_UP:
+ case S_L_INP_TEI_UP:
switch (isd->link_type) {
case E1INP_SIGN_OML:
if (isd->trx->bts->type == GSM_BTS_TYPE_HSL_FEMTO)
@@ -151,6 +156,8 @@
return 0;
}
+static struct gsm_network *hsl_gsmnet;
+
static int bts_model_hslfemto_start(struct gsm_network *net)
{
model_hslfemto.features.data = &model_hslfemto._features_data[0];
@@ -159,13 +166,147 @@
gsm_btsmodel_set_feature(&model_hslfemto, BTS_FEAT_GPRS);
gsm_btsmodel_set_feature(&model_hslfemto, BTS_FEAT_EGPRS);
- osmo_signal_register_handler(SS_INPUT, inp_sig_cb, NULL);
+ osmo_signal_register_handler(SS_L_INPUT, inp_sig_cb, NULL);
- /* Call A-bis input driver, start socket for OML and RSL. */
- return hsl_setup(net);
+ hsl_gsmnet = net;
+ return 0;
}
int bts_model_hslfemto_init(void)
{
return gsm_bts_model_register(&model_hslfemto);
}
+
+#define OML_UP 0x0001
+#define RSL_UP 0x0002
+
+struct gsm_bts *find_bts_by_serno(struct gsm_network *net, uint64_t serno)
+{
+ struct gsm_bts *bts;
+
+ llist_for_each_entry(bts, &net->bts_list, list) {
+ if (bts->type != GSM_BTS_TYPE_HSL_FEMTO)
+ continue;
+
+ if (serno == bts->hsl.serno)
+ return bts;
+ }
+ return NULL;
+}
+
+/* This function is called once the OML/RSL link becomes up. */
+static struct e1inp_sign_link *
+hsl_sign_link_up(void *unit_data, struct e1inp_line *line,
+ enum e1inp_sign_type type)
+{
+ struct hsl_unit *dev = unit_data;
+ struct gsm_bts *bts;
+
+ bts = find_bts_by_serno(hsl_gsmnet, dev->serno);
+ if (!bts) {
+ LOGP(DLINP, LOGL_ERROR, "Unable to find BTS config for "
+ "serial number %lx\n", dev->serno);
+ return NULL;
+ }
+ DEBUGP(DLINP, "Identified HSL BTS Serial Number %lx\n", dev->serno);
+
+ /* we shouldn't hardcode it, but HSL femto also hardcodes it... */
+ bts->oml_tei = 255;
+ bts->c0->rsl_tei = 0;
+ bts->oml_link = e1inp_sign_link_create(&line->ts[E1INP_SIGN_OML-1],
+ E1INP_SIGN_OML, bts->c0,
+ bts->oml_tei, 0);
+ bts->c0->rsl_link = e1inp_sign_link_create(&line->ts[E1INP_SIGN_OML-1],
+ E1INP_SIGN_RSL, bts->c0,
+ bts->c0->rsl_tei, 0);
+ e1inp_event(&line->ts[E1INP_SIGN_OML-1], S_L_INP_TEI_UP, 255, 0);
+ e1inp_event(&line->ts[E1INP_SIGN_OML-1], S_L_INP_TEI_UP, 0, 0);
+ bts->ip_access.flags |= OML_UP;
+ bts->ip_access.flags |= (RSL_UP << 0);
+
+ return bts->oml_link;
+}
+
+void hsl_drop_oml(struct gsm_bts *bts)
+{
+ struct e1inp_line *line;
+
+ if (!bts->oml_link)
+ return;
+
+ line = bts->oml_link->ts->line;
+ e1inp_sign_link_destroy(bts->oml_link);
+ bts->oml_link = NULL;
+
+ e1inp_sign_link_destroy(bts->c0->rsl_link);
+ bts->c0->rsl_link = NULL;
+
+ bts->ip_access.flags = 0;
+}
+
+static void hsl_sign_link_down(struct e1inp_line *line)
+{
+ /* No matter what link went down, we close both signal links. */
+ struct e1inp_ts *ts = &line->ts[E1INP_SIGN_OML-1];
+ struct e1inp_sign_link *link;
+
+ llist_for_each_entry(link, &ts->sign.sign_links, list) {
+ struct gsm_bts *bts = link->trx->bts;
+
+ hsl_drop_oml(bts);
+ /* Yes, we only use the first element of the list. */
+ break;
+ }
+}
+
+/* This function is called if we receive one OML/RSL message. */
+static int hsl_sign_link(struct msgb *msg)
+{
+ int ret = 0;
+ struct e1inp_sign_link *link = msg->dst;
+ struct e1inp_ts *e1i_ts = link->ts;
+
+ switch (link->type) {
+ case E1INP_SIGN_OML:
+ if (!(link->trx->bts->ip_access.flags & OML_UP)) {
+ e1inp_event(e1i_ts, S_L_INP_TEI_UP,
+ link->tei, link->sapi);
+ link->trx->bts->ip_access.flags |= OML_UP;
+ }
+ ret = abis_nm_rcvmsg(msg);
+ break;
+ case E1INP_SIGN_RSL:
+ if (!(link->trx->bts->ip_access.flags &
+ (RSL_UP << link->trx->nr))) {
+ e1inp_event(e1i_ts, S_L_INP_TEI_UP,
+ link->tei, link->sapi);
+ link->trx->bts->ip_access.flags |=
+ (RSL_UP << link->trx->nr);
+ }
+ ret = abis_rsl_rcvmsg(msg);
+ break;
+ default:
+ LOGP(DLINP, LOGL_ERROR, "Unknown signal link type %d\n",
+ link->type);
+ msgb_free(msg);
+ break;
+ }
+ return ret;
+}
+
+static struct e1inp_line_ops hsl_e1inp_line_ops = {
+ .cfg = {
+ .ipa = {
+ .addr = "0.0.0.0",
+ .role = E1INP_LINE_R_BSC,
+ },
+ },
+ .sign_link_up = hsl_sign_link_up,
+ .sign_link_down = hsl_sign_link_down,
+ .sign_link = hsl_sign_link,
+};
+
+static void bts_model_hslfemto_e1line_bind_ops(struct e1inp_line *line)
+{
+ e1inp_line_bind_ops(line, &hsl_e1inp_line_ops);
+}