| /* 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 osmo_iuup_cn; |
| struct msgb; |
| |
| typedef int (*osmo_iuup_data_cb_t)(struct msgb *msg, void *node_priv, void *pdu_priv); |
| |
| struct osmo_iuup_cn_cfg { |
| void *node_priv; |
| |
| /* When an IuUP PDU containing voice payload has been received, this callback is invoked to pass |
| * the voice payload towards the Core Network, msgb_l3() pointing at the payload. */ |
| osmo_iuup_data_cb_t rx_payload; |
| |
| /* IuUP handler sends a PDU to the IuUP peer (e.g. the RNC) */ |
| osmo_iuup_data_cb_t tx_msg; |
| }; |
| |
| 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); |
| |
| /* Encapsulate voice stream payload in IuUP and, if appropriate, call the tx_msg() to transmit the |
| * resulting message to the IuUP peer. msgb_l3() should point at the payload data. |
| * pdu_priv is transparently passed on to tx_msg(). |
| * Returns 0 on success, negative on error. */ |
| int osmo_iuup_cn_tx_payload(struct osmo_iuup_cn *cn, struct msgb *payload, void *pdu_priv); |
| |
| /* Feed a received PDU to the IuUP CN node. This function takes ownership of the msgb, it must not be |
| * freed by the caller. */ |
| int osmo_iuup_cn_rx_pdu(struct osmo_iuup_cn *cn, struct msgb *pdu, void *pdu_priv); |