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, -- To view, visit https://gerrit.osmocom.org/c/osmo-ggsn/+/37666?usp=email To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-ggsn Gerrit-Branch: master Gerrit-Change-Id: I1c3441c71b90c5bbf6f4545484586222e6180fe1 Gerrit-Change-Number: 37666 Gerrit-PatchSet: 1 Gerrit-Owner: pespin <pespin@sysmocom.de> Gerrit-MessageType: newchange