| #ifndef _E1_INPUT_H |
| #define _E1_INPUT_H |
| |
| #include <stdlib.h> |
| |
| #include <openbsc/linuxlist.h> |
| #include <openbsc/gsm_data.h> |
| #include <openbsc/msgb.h> |
| #include <openbsc/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, |
| }; |
| |
| 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, |
| }; |
| |
| /* 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 { |
| struct llist_head sign_links; |
| } 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; |
| |
| } driver; |
| }; |
| |
| struct e1inp_driver { |
| struct llist_head list; |
| const char *name; |
| int (*want_write)(struct e1inp_ts *ts); |
| }; |
| |
| 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); |
| |
| /* register a line with the E1 core */ |
| int e1inp_line_register(struct e1inp_line *line); |
| |
| /* 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); |
| |
| /* 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); |
| |
| /* e1_config.c */ |
| int e1_config(struct gsm_bts *bts); |
| int ia_config(struct gsm_bts *bts); |
| int ipaccess_setup(struct e1inp_line *line); |
| |
| |
| #endif /* _E1_INPUT_H */ |