diff options
Diffstat (limited to 'src/libvlr/vlr_sgs.c')
| -rw-r--r-- | src/libvlr/vlr_sgs.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/libvlr/vlr_sgs.c b/src/libvlr/vlr_sgs.c index 538c9f28f..06737db46 100644 --- a/src/libvlr/vlr_sgs.c +++ b/src/libvlr/vlr_sgs.c @@ -101,6 +101,11 @@ int vlr_sgs_loc_update(struct vlr_instance *vlr, struct vlr_sgs_cfg *cfg, vsub->cgi.lai = *new_lai; vsub->cs.lac = vsub->sgs.lai.lac; + /* Subscribers that are created by the SGs location update will not + * expire automatically, however a 2G LU or an implicit IMSI detach + * from EPS services may change this. */ + vsub->expire_lu = VLR_SUBSCRIBER_NO_EXPIRATION; + return 0; } @@ -197,6 +202,15 @@ void vlr_sgs_eps_detach(struct vlr_instance *vlr, const char *imsi, enum sgsap_i } osmo_fsm_inst_dispatch(vsub->sgs_fsm, evt, NULL); + + /* See also 3GPP TS 29.118, 5.4.3 Procedures in the VLR. Detaching from + * EPS services essentially means that the subscriber leaves the 4G RAN + * but continues to live on 2G, this basically turns the subscriber into + * a normal 2G subscriber and we need to make sure that the lu- + * expiration timer is running. */ + if (vsub->expire_lu == VLR_SUBSCRIBER_NO_EXPIRATION) + vlr_subscr_enable_expire_lu(vsub); + vlr_subscr_put(vsub); } |