#ifndef _OSMOCOM_LAPDM_H #define _OSMOCOM_LAPDM_H #include #include #include #include enum lapdm_state { LAPDm_STATE_IDLE, LAPDm_STATE_SABM_SENT, LAPDm_STATE_MF_EST, LAPDm_STATE_TIMER_RECOV, LAPDm_STATE_OWN_RCVR_BUSY, LAPDm_STATE_NULL, }; struct lapdm_entity; struct osmocom_ms; /* TS 04.06 / Section 3.5.2 */ struct lapdm_datalink { uint8_t V_send; /* seq nr of next I frame to be transmitted */ uint8_t V_ack; /* last frame ACKed by peer */ uint8_t N_send; /* ? set to V_send at Tx time*/ uint8_t V_recv; /* seq nr of next I frame expected to be received */ uint8_t N_recv; /* expected send seq nr of the next received I frame */ enum lapdm_state state; struct timer_list t200; uint8_t retrans_ctr; struct lapdm_entity *entity; }; enum lapdm_dl_sapi { DL_SAPI0 = 0, DL_SAPI3 = 1, _NR_DL_SAPI }; struct lapdm_entity { struct lapdm_datalink datalink[_NR_DL_SAPI]; struct osmocom_ms *ms; }; /* initialize a LAPDm entity */ void lapdm_init(struct lapdm_entity *le, struct osmocom_ms *ms); /* input into layer2 (from layer 1) */ int l2_ph_data_ind(struct msgb *msg, struct lapdm_entity *le, struct l1ctl_info_dl *l1i); /* input into layer2 (from layer 3) */ int rslms_recvmsg(struct msgb *msg, struct osmocom_ms *ms); /* sending messages up from L2 to L3 */ int rslms_sendmsg(struct msgb *msg, struct osmocom_ms *ms); #endif /* _OSMOCOM_LAPDM_H */