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-rw-r--r--include/openbsc/e1_input.h187
1 files changed, 187 insertions, 0 deletions
diff --git a/include/openbsc/e1_input.h b/include/openbsc/e1_input.h
new file mode 100644
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--- /dev/null
+++ b/include/openbsc/e1_input.h
@@ -0,0 +1,187 @@
+#ifndef _E1_INPUT_H
+#define _E1_INPUT_H
+
+#include <stdlib.h>
+#include <netinet/in.h>
+
+#include <osmocore/linuxlist.h>
+#include <openbsc/gsm_data.h>
+#include <osmocore/msgb.h>
+#include <osmocore/select.h>
+#include <openbsc/subchan_demux.h>
+
+#define NUM_E1_TS 32
+
+enum e1inp_sign_type {
+ E1INP_SIGN_NONE,
+ E1INP_SIGN_OML,
+ E1INP_SIGN_RSL,
+};
+const char *e1inp_signtype_name(enum e1inp_sign_type tp);
+
+struct e1inp_ts;
+
+struct e1inp_sign_link {
+ /* list of signalling links */
+ struct llist_head list;
+
+ /* to which timeslot do we belong? */
+ struct e1inp_ts *ts;
+
+ enum e1inp_sign_type type;
+
+ /* trx for msg->trx of received msgs */
+ struct gsm_bts_trx *trx;
+
+ /* msgb queue of to-be-transmitted msgs */
+ struct llist_head tx_list;
+
+ /* SAPI and TEI on the E1 TS */
+ u_int8_t sapi;
+ u_int8_t tei;
+
+ union {
+ struct {
+ u_int8_t channel;
+ } misdn;
+ } driver;
+};
+
+enum e1inp_ts_type {
+ E1INP_TS_TYPE_NONE,
+ E1INP_TS_TYPE_SIGN,
+ E1INP_TS_TYPE_TRAU,
+};
+const char *e1inp_tstype_name(enum e1inp_ts_type tp);
+
+/* A timeslot in the E1 interface */
+struct e1inp_ts {
+ enum e1inp_ts_type type;
+ int num;
+
+ /* to which line do we belong ? */
+ struct e1inp_line *line;
+
+ union {
+ struct {
+ /* list of all signalling links on this TS */
+ struct llist_head sign_links;
+ /* delay for the queue */
+ int delay;
+ /* timer when to dequeue next frame */
+ struct timer_list tx_timer;
+ } sign;
+ struct {
+ /* subchannel demuxer for frames from E1 */
+ struct subch_demux demux;
+ /* subchannel muxer for frames to E1 */
+ struct subch_mux mux;
+ } trau;
+ };
+ union {
+ struct {
+ /* mISDN driver has one fd for each ts */
+ struct bsc_fd fd;
+ } misdn;
+ struct {
+ /* ip.access driver has one fd for each ts */
+ struct bsc_fd fd;
+ } ipaccess;
+ struct {
+ /* DAHDI driver has one fd for each ts */
+ struct bsc_fd fd;
+ struct lapd_instance *lapd;
+ } dahdi;
+ } driver;
+};
+
+struct e1inp_driver {
+ struct llist_head list;
+ const char *name;
+ int (*want_write)(struct e1inp_ts *ts);
+ int (*line_update)(struct e1inp_line *line);
+ int default_delay;
+};
+
+struct e1inp_line {
+ struct llist_head list;
+ unsigned int num;
+ const char *name;
+
+ /* array of timestlots */
+ struct e1inp_ts ts[NUM_E1_TS];
+
+ struct e1inp_driver *driver;
+ void *driver_data;
+};
+
+/* register a driver with the E1 core */
+int e1inp_driver_register(struct e1inp_driver *drv);
+
+/* fine a previously registered driver */
+struct e1inp_driver *e1inp_driver_find(const char *name);
+
+/* register a line with the E1 core */
+int e1inp_line_register(struct e1inp_line *line);
+
+/* get a line by its ID */
+struct e1inp_line *e1inp_line_get(u_int8_t e1_nr);
+
+/* create a line in the E1 input core */
+struct e1inp_line *e1inp_line_create(u_int8_t e1_nr, const char *driver_name);
+
+/* find a sign_link for given TEI and SAPI in a TS */
+struct e1inp_sign_link *
+e1inp_lookup_sign_link(struct e1inp_ts *ts, u_int8_t tei,
+ u_int8_t sapi);
+
+/* create a new signalling link in a E1 timeslot */
+struct e1inp_sign_link *
+e1inp_sign_link_create(struct e1inp_ts *ts, enum e1inp_sign_type type,
+ struct gsm_bts_trx *trx, u_int8_t tei,
+ u_int8_t sapi);
+
+/* configure and initialize one e1inp_ts */
+int e1inp_ts_config(struct e1inp_ts *ts, struct e1inp_line *line,
+ enum e1inp_ts_type type);
+
+/* Call from the Stack: configuration of this TS has changed */
+int e1inp_update_ts(struct e1inp_ts *ts);
+
+/* Receive a packet from the E1 driver */
+int e1inp_rx_ts(struct e1inp_ts *ts, struct msgb *msg,
+ u_int8_t tei, u_int8_t sapi);
+
+/* called by driver if it wants to transmit on a given TS */
+struct msgb *e1inp_tx_ts(struct e1inp_ts *e1i_ts,
+ struct e1inp_sign_link **sign_link);
+
+/* called by driver in case some kind of link state event */
+int e1inp_event(struct e1inp_ts *ts, int evt, u_int8_t tei, u_int8_t sapi);
+
+/* Write LAPD frames to the fd. */
+void e1_set_pcap_fd(int fd);
+
+/* called by TRAU muxer to obtain the destination mux entity */
+struct subch_mux *e1inp_get_mux(u_int8_t e1_nr, u_int8_t ts_nr);
+
+void e1inp_sign_link_destroy(struct e1inp_sign_link *link);
+int e1inp_line_update(struct e1inp_line *line);
+
+/* e1_config.c */
+int e1_reconfig_ts(struct gsm_bts_trx_ts *ts);
+int e1_reconfig_trx(struct gsm_bts_trx *trx);
+int e1_reconfig_bts(struct gsm_bts *bts);
+
+int ia_config_connect(struct gsm_bts *bts, struct sockaddr_in *sin);
+int ipaccess_setup(struct gsm_network *gsmnet);
+
+extern struct llist_head e1inp_driver_list;
+extern struct llist_head e1inp_line_list;
+
+int e1inp_vty_init(void);
+void e1inp_init(void);
+
+int _abis_nm_sendmsg(struct msgb *msg, int to_trx_oml);
+
+#endif /* _E1_INPUT_H */