#ifndef OPENBSC_LAPD_H #define OPENBSC_LAPD_H #include <stdint.h> #include <osmocom/core/linuxlist.h> #include <osmocom/gsm/lapd_core.h> struct lapd_profile { uint8_t k[64]; int n200; int n201; int n202; int t200_sec, t200_usec; int t201_sec, t201_usec; int t202_sec, t202_usec; int t203_sec, t203_usec; int short_address; }; /* predefined lapd profiles (see lapd.c for definition) */ extern const struct lapd_profile lapd_profile_isdn; extern const struct lapd_profile lapd_profile_abis; extern const struct lapd_profile lapd_profile_abis_ericsson; extern const struct lapd_profile lapd_profile_sat; struct lapd_instance { struct llist_head list; /* list of LAPD instances */ int network_side; void (*transmit_cb)(struct msgb *msg, void *cbdata); void *transmit_cbdata; void (*receive_cb)(struct osmo_dlsap_prim *odp, uint8_t tei, uint8_t sapi, void *rx_cbdata); void *receive_cbdata; struct lapd_profile profile; /* must be a copy */ struct llist_head tei_list; /* list of TEI in this LAPD instance */ int pcap_fd; /* PCAP file descriptor */ char *name; /* human-readable name */ }; enum lapd_recv_errors { LAPD_ERR_NONE = 0, LAPD_ERR_BAD_LEN, LAPD_ERR_BAD_ADDR, LAPD_ERR_UNKNOWN_S_CMD, LAPD_ERR_UNKNOWN_U_CMD, LAPD_ERR_UNKNOWN_TEI, LAPD_ERR_BAD_CMD, LAPD_ERR_NO_MEM, __LAPD_ERR_MAX }; struct lapd_tei *lapd_tei_alloc(struct lapd_instance *li, uint8_t tei); int lapd_receive(struct lapd_instance *li, struct msgb *msg, int *error); void lapd_transmit(struct lapd_instance *li, uint8_t tei, uint8_t sapi, struct msgb *msg); struct lapd_instance *lapd_instance_alloc(int network_side, void (*tx_cb)(struct msgb *msg, void *cbdata), void *tx_cbdata, void (*rx_cb)(struct osmo_dlsap_prim *odp, uint8_t tei, uint8_t sapi, void *rx_cbdata), void *rx_cbdata, const struct lapd_profile *profile) OSMO_DEPRECATED("Use lapd_instance_alloc2() instead"); struct lapd_instance *lapd_instance_alloc2(int network_side, void (*tx_cb)(struct msgb *msg, void *cbdata), void *tx_cbdata, void (*rx_cb)(struct osmo_dlsap_prim *odp, uint8_t tei, uint8_t sapi, void *rx_cbdata), void *rx_cbdata, const struct lapd_profile *profile, const char *name); /* In rare cases (e.g. Ericsson's lapd dialect), it may be necessary to * exchange the lapd profile on the fly. lapd_instance_set_profile() * allwos to set the lapd profile on a lapd instance danymically to * one of the lapd profiles define above. */ void lapd_instance_set_profile(struct lapd_instance *li, const struct lapd_profile *profile); void lapd_instance_free(struct lapd_instance *li); /* Start a (user-side) SAP for the specified TEI/SAPI on the LAPD instance */ int lapd_sap_start(struct lapd_instance *li, uint8_t tei, uint8_t sapi); /* Stop a (user-side) SAP for the specified TEI/SAPI on the LAPD instance */ int lapd_sap_stop(struct lapd_instance *li, uint8_t tei, uint8_t sapi); #endif /* OPENBSC_LAPD_H */