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f2a65b8bbb
This should really be using the FSM in libosmocore/laforge/iu_up: take the best of both sides and integate in the libosmocore FSM implementation, then use it here. - in libosmocore, the FSM definition is nicer. - here, we have correct header checksums. This patch here also adds RTP header stripping/adding functionality, after introducing using msgb to pass data around. Change-Id: Ibc70e0aa00476926dd1f4ea8139c34f31f9cdfa3
42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
/* A Media Gateway Control Protocol Media Gateway: RFC 3435 */
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/* IuUP CN node, minimal implementation */
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/* _____IuUP_CN_____
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* | |
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* UE <--> RNC --PDU-> osmo_iuup_cn_rx_pdu() -+-> ---+-> rx_payload()
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* | | |
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* | <-PDU-- tx_msg() <-------------+-- <-+--- osmo_iuup_cn_tx_payload()
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* | |
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* -----------------
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*/
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#pragma once
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struct osmo_iuup_cn;
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struct msgb;
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typedef int (*osmo_iuup_data_cb_t)(struct msgb *msg, void *node_priv);
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struct osmo_iuup_cn_cfg {
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void *node_priv;
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/* When the IuUP peer sent a voice packet, the clean RTP without the IuUP header is fed to this
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* callback. */
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osmo_iuup_data_cb_t rx_payload;
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/* IuUP handler requests that a PDU shall be sent to the IuUP peer (e.g. the RNC).
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* It is guaranteed that the msgb->dst pointer is preserved or copied from the msgb that
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* originated the request. */
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osmo_iuup_data_cb_t tx_msg;
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};
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bool osmo_iuup_cn_is_iuup_init(struct msgb *msg);
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struct osmo_iuup_cn *osmo_iuup_cn_init(void *ctx, struct osmo_iuup_cn_cfg *cfg,
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const char *name_fmt, ...);
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void osmo_iuup_cn_free(struct osmo_iuup_cn *cn);
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int osmo_iuup_cn_tx_payload(struct osmo_iuup_cn *cn, struct msgb *payload);
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int osmo_iuup_cn_rx_pdu(struct osmo_iuup_cn *cn, struct msgb *pdu);
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