pespin has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmo-ggsn/+/37666?usp=email )
Change subject: gtp: Allow UpdatePDPContext initiated by GGSN
......................................................................
gtp: Allow UpdatePDPContext initiated by GGSN
The Update PDP Context procedure can be initiated GGSN -> SGSN, as
described in TS 29.060 7.3.3.
Related: OS#6512
Change-Id: I1c3441c71b90c5bbf6f4545484586222e6180fe1
---
M gtp/gtp.c
1 file changed, 26 insertions(+), 13 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-ggsn refs/changes/66/37666/1
diff --git a/gtp/gtp.c b/gtp/gtp.c
index 8736cad..9b68315 100644
--- a/gtp/gtp.c
+++ b/gtp/gtp.c
@@ -1899,8 +1899,9 @@
}
if (version == 1) {
- /* TEID (mandatory) */
- if (gtpie_gettv4(ie, GTPIE_TEI_DI, 0, &pdp->teid_gn)) {
+ /* TEID (mandatory SGSN->GGSN, Optional SGSN<-GGSN) */
+ if (gtpie_gettv4(ie, GTPIE_TEI_DI, 0, &pdp->teid_gn) &&
+ gsn->mode == GTP_MODE_GGSN) {
rate_ctr_inc2(gsn->ctrg, GSN_CTR_PKT_MISSING);
GTP_LOGPKG(LOGL_ERROR, peer, pack,
len, "Missing mandatory information
field\n");
@@ -1954,9 +1955,10 @@
pdp, GTPCAUSE_MAN_IE_MISSING);
}
- /* SGSN address for user traffic (mandatory) */
+ /* SGSN address for user traffic (mandatory SGSN->GGSN, optional
SGSN<-GGSN) */
if (gtpie_gettlv(ie, GTPIE_GSN_ADDR, 1, &pdp->gsnru.l,
- &pdp->gsnru.v, sizeof(pdp->gsnru.v))) {
+ &pdp->gsnru.v, sizeof(pdp->gsnru.v)) &&
+ gsn->mode == GTP_MODE_GGSN) {
rate_ctr_inc2(gsn->ctrg, GSN_CTR_PKT_MISSING);
GTP_LOGPKG(LOGL_ERROR, peer, pack, len,
"Missing mandatory information field\n");
@@ -1966,9 +1968,10 @@
}
if (version == 1) {
- /* QoS (mandatory) */
+ /* QoS (mandatory SGSN->GGSN, optional SGSN<-GGSN) */
if (gtpie_gettlv(ie, GTPIE_QOS_PROFILE, 0, &pdp->qos_req.l,
- &pdp->qos_req.v, sizeof(pdp->qos_req.v))) {
+ &pdp->qos_req.v, sizeof(pdp->qos_req.v)) &&
+ gsn->mode == GTP_MODE_GGSN) {
rate_ctr_inc2(gsn->ctrg, GSN_CTR_PKT_MISSING);
GTP_LOGPKG(LOGL_ERROR, peer, pack,
len, "Missing mandatory information
field\n");
@@ -1978,7 +1981,7 @@
GTPCAUSE_MAN_IE_MISSING);
}
- /* TFT (conditional) */
+ /* TFT (conditional SGSN->GGSN, optional SGSN<-GGSN) */
if (gtpie_gettlv(ie, GTPIE_TFT, 0, &pdp->tft.l,
&pdp->tft.v, sizeof(pdp->tft.v))) {
}
@@ -2100,8 +2103,7 @@
}
/* Direct Tunnel Flags */
- if (gsn->mode == GTP_MODE_GGSN &&
- gtpie_gettlv(ie, GTPIE_DIR_TUN_FLAGS, 0,
&pdp->dir_tun_flags.l,
+ if (gtpie_gettlv(ie, GTPIE_DIR_TUN_FLAGS, 0,
&pdp->dir_tun_flags.l,
&pdp->dir_tun_flags.v,
sizeof(pdp->dir_tun_flags.v))) {
}
}
@@ -2820,8 +2822,7 @@
}
if ((gsn->mode == GTP_MODE_GGSN) &&
- ((pheader->type == GTP_CREATE_PDP_RSP) ||
- (pheader->type == GTP_UPDATE_PDP_RSP))) {
+ (pheader->type == GTP_CREATE_PDP_RSP)) {
rate_ctr_inc2(gsn->ctrg, GSN_CTR_PKT_UNEXPECT);
GTP_LOGPKG(LOGL_ERROR, &peer, buffer,
status,
@@ -2831,8 +2832,7 @@
}
if ((gsn->mode == GTP_MODE_SGSN) &&
- ((pheader->type == GTP_CREATE_PDP_REQ) ||
- (pheader->type == GTP_UPDATE_PDP_REQ))) {
+ (pheader->type == GTP_CREATE_PDP_REQ)) {
rate_ctr_inc2(gsn->ctrg, GSN_CTR_PKT_UNEXPECT);
GTP_LOGPKG(LOGL_ERROR, &peer, buffer,
status,
--
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Gerrit-Project: osmo-ggsn
Gerrit-Branch: master
Gerrit-Change-Id: I1c3441c71b90c5bbf6f4545484586222e6180fe1
Gerrit-Change-Number: 37666
Gerrit-PatchSet: 1
Gerrit-Owner: pespin <[email protected]>
Gerrit-MessageType: newchange
