[S] Change in osmo-msc[master]: Add LLC and HLC information forwarding to MNCC interface

[laforge]

laforge has submitted this change. ( 
https://gerrit.osmocom.org/c/osmo-msc/+/35393?usp=email )

Change subject: Add LLC and HLC information forwarding to MNCC interface
......................................................................

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
---
M src/libmsc/gsm_04_08_cc.c
1 file changed, 34 insertions(+), 0 deletions(-)

Approvals:
  Jenkins Builder: Verified
  laforge: Looks good to me, approved
  fixeria: Looks good to me, but someone else must approve




diff --git a/src/libmsc/gsm_04_08_cc.c b/src/libmsc/gsm_04_08_cc.c
index f6ec81b..63b1699 100644
--- a/src/libmsc/gsm_04_08_cc.c
+++ b/src/libmsc/gsm_04_08_cc.c
@@ -654,6 +654,20 @@
                gsm48_decode_called(&setup.called,
                              TLVP_VAL(&tp, GSM48_IE_CALLED_BCD)-1);
        }
+       /* low layer compatibility */
+       if (TLVP_PRESENT(&tp, GSM48_IE_LOWL_COMPAT) && TLVP_LEN(&tp, 
GSM48_IE_LOWL_COMPAT) > 0 &&
+           TLVP_LEN(&tp, GSM48_IE_LOWL_COMPAT) <= sizeof(setup.llc.compat)) {
+               setup.fields |= MNCC_F_LOWL_COMPAT;
+               setup.llc.len = TLVP_LEN(&tp, GSM48_IE_LOWL_COMPAT);
+               memcpy(setup.llc.compat, TLVP_VAL(&tp, GSM48_IE_LOWL_COMPAT), 
setup.llc.len);
+       }
+       /* high layer compatibility */
+       if (TLVP_PRESENT(&tp, GSM48_IE_HIGHL_COMPAT) && TLVP_LEN(&tp, 
GSM48_IE_HIGHL_COMPAT) > 0 &&
+           TLVP_LEN(&tp, GSM48_IE_HIGHL_COMPAT) <= sizeof(setup.hlc.compat)) {
+               setup.fields |= MNCC_F_HIGHL_COMPAT;
+               setup.hlc.len = TLVP_LEN(&tp, GSM48_IE_HIGHL_COMPAT);
+               memcpy(setup.hlc.compat, TLVP_VAL(&tp, GSM48_IE_HIGHL_COMPAT), 
setup.hlc.len);
+       }
        /* user-user */
        if (TLVP_PRESENT(&tp, GSM48_IE_USER_USER)) {
                setup.fields |= MNCC_F_USERUSER;
@@ -961,6 +975,12 @@
        /* 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 && setup->llc.len > 0 && 
setup->llc.len <= sizeof(setup->llc.compat))
+               msgb_tlv_put(msg, GSM48_IE_LOWL_COMPAT, setup->llc.len, 
setup->llc.compat);
+       /* high layer compatibility */
+       if (setup->fields & MNCC_F_HIGHL_COMPAT && setup->hlc.len > 0 && 
setup->hlc.len <= sizeof(setup->hlc.compat))
+               msgb_tlv_put(msg, GSM48_IE_HIGHL_COMPAT, setup->hlc.len, 
setup->hlc.compat);
        /* user-user */
        if (setup->fields & MNCC_F_USERUSER)
                gsm48_encode_useruser(msg, 0, &setup->useruser);

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Gerrit-Project: osmo-msc
Gerrit-Branch: master
Gerrit-Change-Id: I760980a7e17e2fa81615adc69ef85797eb0c07f1
Gerrit-Change-Number: 35393
Gerrit-PatchSet: 7
Gerrit-Owner: jolly <andr...@eversberg.eu>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: fixeria <vyanits...@sysmocom.de>
Gerrit-Reviewer: laforge <lafo...@osmocom.org>
Gerrit-MessageType: merged