diff options
Diffstat (limited to 'include/osmocom/gprs/bssgp_bvc_fsm.h')
-rw-r--r-- | include/osmocom/gprs/bssgp_bvc_fsm.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/include/osmocom/gprs/bssgp_bvc_fsm.h b/include/osmocom/gprs/bssgp_bvc_fsm.h new file mode 100644 index 00000000..9d3a6205 --- /dev/null +++ b/include/osmocom/gprs/bssgp_bvc_fsm.h @@ -0,0 +1,71 @@ +#pragma once +#include <stdint.h> + +struct gprs_ns2_inst; +struct osmo_fsm_inst; +struct gprs_ra_id; +struct bssgp2_flow_ctrl; + +enum bssp_ptp_bvc_fsm_state { + BSSGP_BVCFSM_S_NULL, + BSSGP_BVCFSM_S_BLOCKED, + BSSGP_BVCFSM_S_WAIT_RESET_ACK, + BSSGP_BVCFSM_S_UNBLOCKED, +}; + +enum bssgp_ptp_bvc_fsm_event { + /* Rx of BSSGP PDUs from the remote side; 'data' is 'struct tlv_parsed', and + * the assumption is that the caller has already validated all mandatory IEs + * are present and of sufficient length */ + BSSGP_BVCFSM_E_RX_BLOCK, + BSSGP_BVCFSM_E_RX_BLOCK_ACK, + BSSGP_BVCFSM_E_RX_UNBLOCK, + BSSGP_BVCFSM_E_RX_UNBLOCK_ACK, + BSSGP_BVCFSM_E_RX_RESET, + BSSGP_BVCFSM_E_RX_RESET_ACK, + BSSGP_BVCFSM_E_RX_FC_BVC, + BSSGP_BVCFSM_E_RX_FC_BVC_ACK, + /* Requests of the local user */ + BSSGP_BVCFSM_E_REQ_BLOCK, /* data: uint8_t *cause */ + BSSGP_BVCFSM_E_REQ_UNBLOCK, + BSSGP_BVCFSM_E_REQ_RESET, /* data: uint8_t *cause */ + BSSGP_BVCFSM_E_REQ_FC_BVC, /* data: struct bssgp2_flow_ctrl */ +}; + +struct bssgp_bvc_fsm_ops { + /* call-back notifying the user of a state change */ + void (*state_chg_notification)(uint16_t nsei, uint16_t bvci, int old_state, int new_state, + void *priv); + /* call-back notifying the user of a BVC-RESET event */ + void (*reset_notification)(uint16_t nsei, uint16_t bvci, const struct gprs_ra_id *ra_id, + uint16_t cell_id, uint8_t cause, void *priv); + void (*rx_fc_bvc)(uint16_t nsei, uint16_t bvci, const struct bssgp2_flow_ctrl *fc, void *priv); + void (*reset_ack_notification)(uint16_t nsei, uint16_t bvci, const struct gprs_ra_id *ra_id, + uint16_t cell_id, uint8_t cause, void *priv); +}; + +struct osmo_fsm_inst * +bssgp_bvc_fsm_alloc_sig_bss(void *ctx, struct gprs_ns2_inst *nsi, uint16_t nsei, uint32_t features); + +struct osmo_fsm_inst * +bssgp_bvc_fsm_alloc_ptp_bss(void *ctx, struct gprs_ns2_inst *nsi, uint16_t nsei, uint16_t bvci, + const struct gprs_ra_id *ra_id, uint16_t cell_id); + +struct osmo_fsm_inst * +bssgp_bvc_fsm_alloc_sig_sgsn(void *ctx, struct gprs_ns2_inst *nsi, uint16_t nsei, uint32_t features); + +struct osmo_fsm_inst * +bssgp_bvc_fsm_alloc_ptp_sgsn(void *ctx, struct gprs_ns2_inst *nsi, uint16_t nsei, uint16_t bvci); + +void bssgp_bvc_fsm_set_ops(struct osmo_fsm_inst *fi, const struct bssgp_bvc_fsm_ops *ops, void *ops_priv); + +bool bssgp_bvc_fsm_is_unblocked(struct osmo_fsm_inst *fi); + +uint8_t bssgp_bvc_fsm_get_block_cause(struct osmo_fsm_inst *fi); + +uint32_t bssgp_bvc_fsm_get_features_advertised(struct osmo_fsm_inst *fi); +uint32_t bssgp_bvc_fsm_get_features_received(struct osmo_fsm_inst *fi); +uint32_t bssgp_bvc_fsm_get_features_negotiated(struct osmo_fsm_inst *fi); + +void bssgp_bvc_fsm_set_max_pdu_len(struct osmo_fsm_inst *fi, uint16_t max_pdu_len); +uint16_t bssgp_bvc_fsm_get_max_pdu_len(const struct osmo_fsm_inst *fi);
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