diff options
Diffstat (limited to 'include/osmocom/mgcp/iuup_cn_node.h')
-rw-r--r-- | include/osmocom/mgcp/iuup_cn_node.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/include/osmocom/mgcp/iuup_cn_node.h b/include/osmocom/mgcp/iuup_cn_node.h new file mode 100644 index 000000000..ca69b4db7 --- /dev/null +++ b/include/osmocom/mgcp/iuup_cn_node.h @@ -0,0 +1,47 @@ +/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */ +/* IuUP CN node, minimal implementation */ + +/* _____IuUP_CN_____ + * | | + * UE <--> RNC --PDU-> osmo_iuup_cn_rx_pdu() -+-> ---+-> rx_payload() + * | | | + * | <-PDU-- tx_msg() <-------------+-- <-+--- osmo_iuup_cn_tx_payload() + * | | + * ----------------- + */ + +#pragma once + +struct msgb; + +typedef int (*osmo_iuup_data_cb_t)(struct msgb *msg, void *node_priv); + +struct osmo_iuup_cn_cfg { + void *node_priv; + + /* When the IuUP peer sent a voice packet, the clean RTP without the IuUP header is fed to this + * callback. */ + osmo_iuup_data_cb_t rx_payload; + + /* IuUP handler requests that a PDU shall be sent to the IuUP peer (e.g. the RNC). + * It is guaranteed that the msgb->dst pointer is preserved or copied from the msgb that + * originated the request. */ + osmo_iuup_data_cb_t tx_msg; +}; + +struct osmo_iuup_cn { + struct osmo_iuup_cn_cfg cfg; + char *name; + uint8_t next_frame_nr; + int rtp_payload_type; +}; + +bool osmo_iuup_cn_is_iuup_init(struct msgb *msg); + +struct osmo_iuup_cn *osmo_iuup_cn_init(void *ctx, struct osmo_iuup_cn_cfg *cfg, + const char *name_fmt, ...); +void osmo_iuup_cn_free(struct osmo_iuup_cn *cn); + +int osmo_iuup_cn_tx_payload(struct osmo_iuup_cn *cn, struct msgb *payload); + +int osmo_iuup_cn_rx_pdu(struct osmo_iuup_cn *cn, struct msgb *pdu); |