diff options
author | Holger Hans Peter Freyther <zecke@selfish.org> | 2010-05-15 22:09:39 +0800 |
---|---|---|
committer | Holger Hans Peter Freyther <zecke@selfish.org> | 2010-05-15 23:55:28 +0800 |
commit | 57900f00088e99731ad0d22cb1701eaa22cc25f0 (patch) | |
tree | b3120019d88429f73f666b4c97045f691959202b | |
parent | 66ac860f6213a18ee18e135e2367d09f59539339 (diff) |
[nat] Check proto descriptor and the message type
-rw-r--r-- | openbsc/src/nat/bsc_nat_utils.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/openbsc/src/nat/bsc_nat_utils.c b/openbsc/src/nat/bsc_nat_utils.c index 2e0c5a45a..d5cad896f 100644 --- a/openbsc/src/nat/bsc_nat_utils.c +++ b/openbsc/src/nat/bsc_nat_utils.c @@ -345,9 +345,11 @@ int bsc_nat_filter_sccp_cr(struct bsc_connection *bsc, struct msgb *msg, struct hdr48 = (struct gsm48_hdr *) TLVP_VAL(&tp, GSM0808_IE_LAYER_3_INFORMATION); - if (hdr48->msg_type == GSM48_MT_MM_LOC_UPD_REQUEST) { + if (hdr48->proto_discr == GSM48_PDISC_MM && + hdr48->msg_type == GSM48_MT_MM_LOC_UPD_REQUEST) { return _cr_check_loc_upd(bsc, &hdr48->data[0], hdr48_len - sizeof(*hdr48)); - } else if (hdr48->msg_type == GSM48_MT_MM_CM_SERV_REQ) { + } else if (hdr48->proto_discr == GSM48_PDISC_MM && + hdr48->msg_type == GSM48_MT_MM_CM_SERV_REQ) { return _cr_check_cm_serv_req(bsc, &hdr48->data[0], hdr48_len - sizeof(*hdr48)); } else { return 0; |