add ran_infra.force_mgw_codecs_to_ran
Indicate in the ran_infra data structure whether a RAN needs specific codecs to be set up on the RAN facing MGW endpoint. This allows setting forced RAN codecs as first-class citizen in the ran_infra data structure, instead of special cases in the code (for IuUP on IuCS). Will be used in subsequent commit I37f65c36af2679ecba1040a11a9aa0eb9481d817, submitted separately for easier readability. Change-Id: I37f65c36af2679ecba1040a11a9aa0eb9481d817
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@ -4,6 +4,7 @@
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#include <osmocom/gsm/gsup.h>
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#include <osmocom/msc/sccp_ran.h>
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#include <osmocom/msc/ran_msg.h>
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#include <osmocom/msc/sdp_msg.h>
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struct osmo_tdef;
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@ -25,6 +26,10 @@ struct ran_infra {
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const ran_dec_l2_t ran_dec_l2;
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const ran_encode_t ran_encode;
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struct sccp_ran_inst *sri;
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/* To always set up the MGW endpoint facing the RAN side with specific codecs, list those here. Otherwise leave
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* empty (to use the result of codecs filtering). This exists for IuCS, to always set the MGW endpoint facing
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* RAN to IUFP, to decapsulate the IuUP headers. */
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struct sdp_audio_codecs force_mgw_codecs_to_ran;
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};
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extern struct ran_infra msc_ran_infra[];
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@ -1791,6 +1791,8 @@ static int msc_a_start_assignment(struct msc_a *msc_a, struct gsm_trans *cc_tran
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return osmo_fsm_inst_dispatch(msc_a->c.fi, MSC_EV_CALL_LEG_RTP_LOCAL_ADDR_AVAILABLE, cl->rtp[RTP_TO_RAN]);
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if (msc_a->c.ran->type == OSMO_RAT_UTRAN_IU) {
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/* FUTURE: ran_infra->force_mgw_codecs_to_ran is intended to be used here instead of the special
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* condition on OSMO_RAT_UTRAN_IU and the mgcp_codecs value CODEC_IUFP */
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codec = CODEC_IUFP;
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codec_ptr = &codec;
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} else {
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@ -108,6 +108,16 @@ struct ran_infra msc_ran_infra[] = {
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.ran_dec_l2 = ran_iu_decode_l2,
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.ran_encode = ran_iu_encode,
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#endif
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.force_mgw_codecs_to_ran = {
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.count = 1,
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.codec = {
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{
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.payload_type = 96,
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.subtype_name = "VND.3GPP.IUFP",
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.rate = 16000,
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},
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},
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},
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},
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[OSMO_RAT_EUTRAN_SGS] = {
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.type = OSMO_RAT_EUTRAN_SGS,
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@ -408,6 +408,16 @@ struct ran_infra test_ran_infra[] = {
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.log_subsys = DIUCS,
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.tdefs = msc_tdefs_utran,
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.ran_encode = dont_ran_encode,
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.force_mgw_codecs_to_ran = {
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.count = 1,
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.codec = {
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{
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.payload_type = 96,
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.subtype_name = "VND.3GPP.IUFP",
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.rate = 16000,
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},
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},
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},
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},
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};
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