diff options
| author | Daniel Willmann <dwillmann@sysmocom.de> | 2016-02-25 15:22:57 +0100 |
|---|---|---|
| committer | Neels Hofmeyr <nhofmeyr@sysmocom.de> | 2016-03-03 16:19:12 +0100 |
| commit | a0da2dbe9e8db9bed591bdcedb26a601adcf1a32 (patch) | |
| tree | 65388b1aadf3077e370f02c19a3c7b33a966920a /openbsc/src/gprs | |
| parent | 7df570525181d3ff4305d5e690f10f99e5426332 (diff) | |
WIP: gprs_gmm: Get mm ctx from RA update in Iu mode
Iu mode doesn't have tlli, so look up according to p-tmsi
Diffstat (limited to 'openbsc/src/gprs')
| -rw-r--r-- | openbsc/src/gprs/gprs_gmm.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/openbsc/src/gprs/gprs_gmm.c b/openbsc/src/gprs/gprs_gmm.c index ee3f9bfed..47302a359 100644 --- a/openbsc/src/gprs/gprs_gmm.c +++ b/openbsc/src/gprs/gprs_gmm.c @@ -1284,7 +1284,19 @@ static int gsm48_rx_gmm_ra_upd_req(struct sgsn_mm_ctx *mmctx, struct msgb *msg, * is an optimization to avoid the RA reject (impl detached) * below, which will cause a new attach cycle. */ /* Look-up the MM context based on old RA-ID and TLLI */ - mmctx = sgsn_mm_ctx_by_tlli_and_ptmsi(msgb_tlli(msg), &old_ra_id); + if (!msg->dst) { + mmctx = sgsn_mm_ctx_by_tlli_and_ptmsi(msgb_tlli(msg), &old_ra_id); + } else if (TLVP_PRESENT(&tp, GSM48_IE_GMM_ALLOC_PTMSI)) { + /* In Iu mode search only for ptmsi */ + char mi_string[GSM48_MI_SIZE]; + uint8_t mi_len = TLVP_LEN(&tp, GSM48_IE_GMM_ALLOC_PTMSI); + uint8_t *mi = TLVP_VAL(&tp, GSM48_IE_GMM_ALLOC_PTMSI); + uint8_t mi_type = *mi & GSM_MI_TYPE_MASK; + gsm48_mi_to_string(mi_string, sizeof(mi_string), mi, mi_len); + + if (mi_type == GSM_MI_TYPE_TMSI) + mmctx = sgsn_mm_ctx_by_ptmsi(mi_string); + } if (mmctx) { LOGMMCTXP(LOGL_INFO, mmctx, "Looked up by matching TLLI and P_TMSI. " |