diff options
Diffstat (limited to 'gtp/gtp.c')
| -rw-r--r-- | gtp/gtp.c | 39 |
1 files changed, 33 insertions, 6 deletions
@@ -2581,17 +2581,44 @@ int gtp_error_ind_resp(struct gsn_t *gsn, int version, int gtp_error_ind_conf(struct gsn_t *gsn, int version, struct sockaddr_in *peer, void *pack, unsigned len) { + union gtpie_member *ie[GTPIE_SIZE]; struct pdp_t *pdp; /* Find the context in question */ - if (pdp_tidget(&pdp, be64toh(((union gtp_packet *)pack)->gtp0.h.tid))) { - gsn->err_unknownpdp++; - GTP_LOGPKG(LOGL_ERROR, peer, pack, len, - "Unknown PDP context\n"); - return EOF; + if (version == 0) { + if (pdp_tidget(&pdp, be64toh(((union gtp_packet *)pack)->gtp0.h.tid))) { + gsn->err_unknownpdp++; + GTP_LOGPKG(LOGL_ERROR, peer, pack, len, + "Unknown PDP context\n"); + return EOF; + } + } else if (version == 1) { + /* we have to look-up based on the *peer* TEID */ + int hlen = get_hlen(pack); + uint32_t teid_gn; + + /* Decode information elements */ + if (gtpie_decaps(ie, version, pack + hlen, len - hlen)) { + gsn->invalid++; + GTP_LOGPKG(LOGL_ERROR, peer, pack, len, + "Invalid message format\n"); + return EOF; + } + + if (gtpie_gettv4(ie, GTPIE_TEI_DI, 0, &teid_gn)) { + gsn->missing++; + GTP_LOGPKG(LOGL_ERROR, peer, pack, len, + "Missing mandatory information field\n"); + return EOF; + } + + if (pdp_getgtp1_peer_d(&pdp, peer, teid_gn)) { + gsn->err_unknownpdp++; + GTP_LOGPKG(LOGL_ERROR, peer, pack, len, "Unknown PDP context\n"); + return EOF; + } } - gsn->err_unknownpdp++; /* TODO: Change counter */ GTP_LOGPKG(LOGL_ERROR, peer, pack, len, "Received Error Indication\n"); |