cellular-infrastructure
/
osmo-gbproxy
mirror of https://gerrit.osmocom.org/osmo-gbproxy
9
0
Fork 0
Code Issues Releases Wiki Activity

gbproxy: Route STATUS in PtP-BVC by TLLI/TMSI as well 

Related: SYS#5235, OS#4892
Change-Id: Ib31c60ba840522719f307df089efeb8f4da1d9ae
This commit is contained in:
Daniel Willmann 2021-10-29 18:28:13 +02:00
parent 6ec5f95748
commit 5a14837753
1 changed files with 21 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
src/gb_proxy.c
View File

@ -380,6 +380,8 @@ static int gbprox_bss2sgsn_tlli(struct gbproxy_cell *cell, struct msgb *msg, con
return gbprox_relay2peer(msg, sgsn_bvc, sig_bvci ? 0 : sgsn_bvc->bvci);
}
static int gbproxy_tlli_from_status_pdu(struct tlv_parsed *tp, uint32_t *tlli, char *log_pfx);
/* Receive an incoming PTP message from a BSS-side NS-VC */
static int gbprox_rx_ptp_from_bss(struct gbproxy_nse *nse, struct msgb *msg, uint16_t ns_bvci)
{
@ -496,12 +498,28 @@ static int gbprox_rx_ptp_from_bss(struct gbproxy_nse *nse, struct msgb *msg, uin
osmo_fsm_inst_dispatch(bss_bvc->fi, BSSGP_BVCFSM_E_RX_FC_BVC, msg);
break;
case BSSGP_PDUT_STATUS:
/* TODO: Implement by inspecting the contained PDU */
if (!TLVP_PRESENT(&tp, BSSGP_IE_PDU_IN_ERROR))
{
struct gbproxy_sgsn *sgsn;
/* Check if the status needs to be terminated locally */
uint8_t cause = *TLVP_VAL(&tp, BSSGP_IE_CAUSE);
LOGPNSE(nse, LOGL_NOTICE, "Rx STATUS cause=0x%02x(%s)\n", cause,
bssgp_cause_str(cause));
if (gbproxy_tlli_from_status_pdu(&tp, &tlli, log_pfx) == 0)
sgsn = gbproxy_select_sgsn(nse->cfg, &tlli);
else
sgsn = gbproxy_select_sgsn(nse->cfg, NULL);
if (!sgsn) {
rc = -EINVAL;
break;
LOGPBVC(bss_bvc, LOGL_ERROR, "Rx %s: Implementation missing\n", pdut_name);
}
rc = gbprox_relay2nse(msg, sgsn->nse, ns_bvci);
break;
}
}
return 0;
}