diff options
Diffstat (limited to 'openbsc/src/gprs/gb_proxy_tlli.c')
| -rw-r--r-- | openbsc/src/gprs/gb_proxy_tlli.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/openbsc/src/gprs/gb_proxy_tlli.c b/openbsc/src/gprs/gb_proxy_tlli.c index 138837eff..467006e87 100644 --- a/openbsc/src/gprs/gb_proxy_tlli.c +++ b/openbsc/src/gprs/gb_proxy_tlli.c @@ -557,9 +557,14 @@ struct gbproxy_link_info *gbproxy_update_link_state_dl( /* A new P-TMSI has been signalled in the message, * register new TLLI */ uint32_t new_sgsn_ptmsi; - uint32_t new_bss_ptmsi; + uint32_t new_bss_ptmsi = GSM_RESERVED_TMSI; gprs_parse_tmsi(parse_ctx->new_ptmsi_enc, &new_sgsn_ptmsi); - new_bss_ptmsi = gbproxy_make_bss_ptmsi(peer, new_sgsn_ptmsi); + + if (link_info->sgsn_tlli.ptmsi == new_sgsn_ptmsi) + new_bss_ptmsi = link_info->tlli.ptmsi; + + if (new_bss_ptmsi == GSM_RESERVED_TMSI) + new_bss_ptmsi = gbproxy_make_bss_ptmsi(peer, new_sgsn_ptmsi); LOGP(DGPRS, LOGL_INFO, "Got new PTMSI %08x from SGSN, using %08x for BSS\n", |