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-rw-r--r--openbsc/src/libiu/iu.c64
1 files changed, 29 insertions, 35 deletions
diff --git a/openbsc/src/libiu/iu.c b/openbsc/src/libiu/iu.c
index 2381c3c1c..a0d79793e 100644
--- a/openbsc/src/libiu/iu.c
+++ b/openbsc/src/libiu/iu.c
@@ -116,42 +116,36 @@ int iu_rab_deact(struct ue_conn_ctx *ue_ctx, uint8_t rab_id)
return -1;
}
-int gprs_transp_upd_key(struct sgsn_mm_ctx *mm)
+int iu_tx_sec_mode_cmd(struct ue_conn_ctx *uectx, struct gsm_auth_tuple *tp)
{
- struct gsm_auth_tuple *tp = &mm->auth_triplet;
-
- if (mm->ran_type == MM_CTX_T_UTRAN_Iu) {
- struct ue_conn_ctx *uectx;
- struct osmo_scu_prim *prim;
- struct msgb *msg;
- uint8_t ik[16];
- uint8_t ck[16];
- unsigned int i;
-
- uectx = mm->iu.ue_ctx;
-
- /* C4 function to dervie CK from Kc */
- memcpy(ck, tp->kc, 8);
- memcpy(ck+8, tp->kc, 8);
-
- /* C5 function to derive IK from Kc */
- for (i = 0; i < 4; i++)
- ik[i] = tp->kc[i] ^ tp->kc[i+4];
- memcpy(ik+4, tp->kc, 8);
- for (i = 12; i < 16; i++)
- ik[i] = ik[i-12];
-
- /* crate RANAP message */
- msg = ranap_new_msg_sec_mod_cmd(ik, NULL);
- msg->l2h = msg->data;
- /* wrap RANAP message in SCCP N-DATA.req */
- prim = (struct osmo_scu_prim *) msgb_push(msg, sizeof(*prim));
- prim->u.data.conn_id = uectx->conn_id;
- osmo_prim_init(&prim->oph, SCCP_SAP_USER,
- OSMO_SCU_PRIM_N_DATA,
- PRIM_OP_REQUEST, msg);
- osmo_sua_user_link_down(uectx->link, &prim->oph);
- }
+ struct osmo_scu_prim *prim;
+ struct msgb *msg;
+ uint8_t ik[16];
+ uint8_t ck[16];
+ unsigned int i;
+
+ /* C4 function to dervie CK from Kc */
+ memcpy(ck, tp->kc, 8);
+ memcpy(ck+8, tp->kc, 8);
+
+ /* C5 function to derive IK from Kc */
+ for (i = 0; i < 4; i++)
+ ik[i] = tp->kc[i] ^ tp->kc[i+4];
+ memcpy(ik+4, tp->kc, 8);
+ for (i = 12; i < 16; i++)
+ ik[i] = ik[i-12];
+
+ /* crate RANAP message */
+ msg = ranap_new_msg_sec_mod_cmd(ik, NULL);
+ msg->l2h = msg->data;
+ /* wrap RANAP message in SCCP N-DATA.req */
+ prim = (struct osmo_scu_prim *) msgb_push(msg, sizeof(*prim));
+ prim->u.data.conn_id = uectx->conn_id;
+ osmo_prim_init(&prim->oph, SCCP_SAP_USER,
+ OSMO_SCU_PRIM_N_DATA,
+ PRIM_OP_REQUEST, msg);
+ osmo_sua_user_link_down(uectx->link, &prim->oph);
+
return 0;
}