pespin has uploaded this change for review.
gtp: Set Direct Tunnel Flags DTI during UpdatePDPCtx
This is required as per TS 28.060 to tell the GGSN that the remote
Address/TEID it is receiving it's the one of the RNC.
Upon receiving a GTPU Error Indication, the GGSN knowing it's using
DirectTunnel, can then update the SGSN with UpdatePDPContextReq with
Direct Tunnel Flags DTI=1 EI=1 and then the SGSN can decide whether
reconfigure the Direct Tunnel or switch to 2-leg tunnel until the
connection with RNC/UE can be reestablished.
Depends: osmo-ggsn.git Change-Id Ia3e360a35d30858eab1e438dc2508fd756c2e22e
Related: SYS#5435
Change-Id: Iefe73eeea41df0c55db673194c9e9547504cbf0d
---
M src/sgsn/gprs_ranap.c
1 file changed, 21 insertions(+), 0 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-sgsn refs/changes/96/37596/1
diff --git a/src/sgsn/gprs_ranap.c b/src/sgsn/gprs_ranap.c
index 5e0d8ed..51954ce 100644
--- a/src/sgsn/gprs_ranap.c
+++ b/src/sgsn/gprs_ranap.c
@@ -103,6 +103,8 @@
LOGP(DRANAP, LOGL_DEBUG, "Updating TEID on RNC side from 0x%08x to 0x%08x\n",
pdp->lib->teid_own, tei);
pdp->lib->teid_own = tei;
+ pdp->lib->dir_tun_flags.l = 1;
+ pdp->lib->dir_tun_flags.v[0] = 0x01; /* Set DTI flag in Direct Tunnel Flags */
require_pdp_update = true;
}
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