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gbproxy: Explicitly convert PTMSI to TLLI

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This patch modifies the new_ptmsi handling by setting its two most
significant bits before using it as TLLI.

Sponsored-by: On-Waves ehf
This commit is contained in:
Jacob Erlbeck
2014-08-06 18:50:05 +02:00
parent 690768a171
commit fb22ac52b0
1 changed files with 6 additions and 3 deletions
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9
openbsc/src/gprs/gb_proxy.c
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@@ -1289,8 +1289,10 @@ static void gbprox_update_state(struct gbproxy_peer *peer,
}
if (parse_ctx->new_ptmsi_enc && parse_ctx->to_bss && parse_ctx->imsi) {
/* A new TLLI (PTMSI) has been signaled in the message */
/* A new PTMSI has been signaled in the message,
* register new TLLI */
uint32_t new_ptmsi;
uint32_t new_tlli;
if (!parse_mi_tmsi(parse_ctx->new_ptmsi_enc, GSM48_TMSI_LEN,
&new_ptmsi)) {
LOGP(DGPRS, LOGL_ERROR,
@@ -1298,9 +1300,10 @@ static void gbprox_update_state(struct gbproxy_peer *peer,
parse_ctx->tlli);
return;
}
new_tlli = gprs_tmsi2tlli(new_ptmsi, TLLI_LOCAL);
LOGP(DGPRS, LOGL_INFO,
"Got new TLLI/PTMSI %08x (current is %08x)\n",
new_ptmsi, parse_ctx->tlli);
"Got new TLLI/PTMSI %08x/%08x (current is %08x)\n",
new_tlli, new_ptmsi, parse_ctx->tlli);
gbprox_register_tlli(peer, new_ptmsi,
parse_ctx->imsi, parse_ctx->imsi_len);
} else if (parse_ctx->tlli && parse_ctx->imsi) {