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Add LLC and HLC information forwarding to MNCC interface 

low/high layer compatibility are used for capability checking between
caller and called entitiy. The transcoding is performed by libosmogsm.

Related: OS#6152
Depends: libosmocore.git Ia6a2159ecf810a02f85b558026edf20b934567de
Change-Id: I760980a7e17e2fa81615adc69ef85797eb0c07f1
This commit is contained in:
Andreas Eversberg 2023-12-19 12:56:44 +01:00
parent 534847cc65
commit 8c1c145e6e
1 changed files with 18 additions and 0 deletions
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18
src/libmsc/gsm_04_08_cc.c
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@ -645,6 +645,18 @@ static int gsm48_cc_rx_setup(struct gsm_trans *trans, struct msgb *msg)
gsm48_decode_called(&setup.called,
TLVP_VAL(&tp, GSM48_IE_CALLED_BCD)-1);
}
/* low layer compatibility */
if (TLVP_PRESENT(&tp, GSM48_IE_LOWL_COMPAT)) {
setup.fields |= MNCC_F_LOWL_COMPAT;
gsm48_decode_lowl_compat(&setup.llc,
TLVP_VAL(&tp, GSM48_IE_LOWL_COMPAT)-1);
}
/* high layer compatibility */
if (TLVP_PRESENT(&tp, GSM48_IE_HIGHL_COMPAT)) {
setup.fields |= MNCC_F_HIGHL_COMPAT;
gsm48_decode_highl_compat(&setup.hlc,
TLVP_VAL(&tp, GSM48_IE_HIGHL_COMPAT)-1);
}
/* user-user */
if (TLVP_PRESENT(&tp, GSM48_IE_USER_USER)) {
setup.fields |= MNCC_F_USERUSER;
@ -915,6 +927,12 @@ static int gsm48_cc_tx_setup(struct gsm_trans *trans, void *arg)
/* called party BCD number */
if (setup->fields & MNCC_F_CALLED)
gsm48_encode_called(msg, &setup->called);
/* low layer compatibility */
if (setup->fields & MNCC_F_LOWL_COMPAT)
gsm48_encode_lowl_compat(msg, &setup->llc);
/* high layer compatibility */
if (setup->fields & MNCC_F_HIGHL_COMPAT)
gsm48_encode_highl_compat(msg, &setup->hlc);
/* user-user */
if (setup->fields & MNCC_F_USERUSER)
gsm48_encode_useruser(msg, 0, &setup->useruser);