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Diffstat (limited to 'openbsc/src/gprs/gprs_gmm.c')
-rw-r--r--openbsc/src/gprs/gprs_gmm.c69
1 files changed, 47 insertions, 22 deletions
diff --git a/openbsc/src/gprs/gprs_gmm.c b/openbsc/src/gprs/gprs_gmm.c
index 9e7197a9e..6c2213fb6 100644
--- a/openbsc/src/gprs/gprs_gmm.c
+++ b/openbsc/src/gprs/gprs_gmm.c
@@ -60,6 +60,8 @@
#define PTMSI_ALLOC
+int gprs_transp_upd_key(struct sgsn_mm_ctx *mm);
+
extern struct sgsn_instance *sgsn;
static const struct tlv_definition gsm48_gmm_att_tlvdef = {
@@ -132,12 +134,11 @@ time_t gprs_max_time_to_idle(void)
static int gsm48_gmm_sendmsg(struct msgb *msg, int command,
struct sgsn_mm_ctx *mm)
{
- if (mm) {
+ if (mm)
rate_ctr_inc(&mm->ctrg->ctr[GMM_CTR_PKTS_SIG_OUT]);
- if (mm->ran_type == MM_CTX_T_UTRAN_Iu)
- return gprs_iu_tx(msg, GPRS_SAPI_GMM, mm);
- }
-#warning "How to catch Iu-mode messages without MM context?"
+
+ if (msg->dst)
+ return gprs_iu_tx(msg, GPRS_SAPI_GMM, mm);
/* caller needs to provide TLLI, BVCI and NSEI */
return gprs_llc_tx_ui(msg, GPRS_SAPI_GMM, command, mm);
@@ -150,6 +151,7 @@ static void gmm_copy_id(struct msgb *msg, const struct msgb *old)
msgb_tlli(msg) = msgb_tlli(old);
msgb_bvci(msg) = msgb_bvci(old);
msgb_nsei(msg) = msgb_nsei(old);
+ msg->dst = old->dst;
}
/* Store BVCI/NSEI in MM context */
@@ -165,6 +167,7 @@ static void mmctx2msgid(struct msgb *msg, const struct sgsn_mm_ctx *mm)
msgb_tlli(msg) = mm->gb.tlli;
msgb_bvci(msg) = mm->gb.bvci;
msgb_nsei(msg) = mm->gb.nsei;
+ msg->dst = mm->iu.ue_ctx;
}
static void mm_ctx_cleanup_free(struct sgsn_mm_ctx *ctx, const char *log_text)
@@ -531,7 +534,11 @@ static int gsm48_rx_gmm_auth_ciph_resp(struct sgsn_mm_ctx *ctx,
/* FIXME: enable LLC cipheirng */
/* Check if we can let the mobile station enter */
- return gsm48_gmm_authorize(ctx);
+ rc = gsm48_gmm_authorize(ctx);
+
+ gprs_transp_upd_key(ctx);
+
+ return rc;
}
static void extract_subscr_msisdn(struct sgsn_mm_ctx *ctx)
@@ -837,7 +844,7 @@ static int gsm48_rx_gmm_att_req(struct sgsn_mm_ctx *ctx, struct msgb *msg,
uint32_t tmsi;
char mi_string[GSM48_MI_SIZE];
struct gprs_ra_id ra_id;
- uint16_t cid;
+ uint16_t cid = 0;
enum gsm48_gmm_cause reject_cause;
int rc;
@@ -847,8 +854,8 @@ static int gsm48_rx_gmm_att_req(struct sgsn_mm_ctx *ctx, struct msgb *msg,
* with a foreign TLLI (P-TMSI that was allocated to the MS before),
* or with random TLLI. */
-#error "how to obtain RA_ID in Iu case?"
- cid = bssgp_parse_cell_id(&ra_id, msgb_bcid(msg));
+ if (!msg->dst)
+ cid = bssgp_parse_cell_id(&ra_id, msgb_bcid(msg));
/* MS network capability 10.5.5.12 */
msnc_len = *cur++;
@@ -900,7 +907,10 @@ static int gsm48_rx_gmm_att_req(struct sgsn_mm_ctx *ctx, struct msgb *msg,
#if 0
return gsm48_tx_gmm_att_rej(msg, GMM_CAUSE_IMSI_UNKNOWN);
#else
- ctx = sgsn_mm_ctx_alloc(0, &ra_id);
+ if (msg->dst)
+ ctx = sgsn_mm_ctx_alloc_iu(msg->dst);
+ else
+ ctx = sgsn_mm_ctx_alloc(0, &ra_id);
if (!ctx) {
reject_cause = GMM_CAUSE_NET_FAIL;
goto rejected;
@@ -923,7 +933,10 @@ static int gsm48_rx_gmm_att_req(struct sgsn_mm_ctx *ctx, struct msgb *msg,
if (!ctx) {
/* Allocate a context as most of our code expects one.
* Context will not have an IMSI ultil ID RESP is received */
- ctx = sgsn_mm_ctx_alloc(msgb_tlli(msg), &ra_id);
+ if (msg->dst)
+ ctx = sgsn_mm_ctx_alloc_iu(msg->dst);
+ else
+ ctx = sgsn_mm_ctx_alloc(msgb_tlli(msg), &ra_id);
ctx->p_tmsi = tmsi;
}
if (ctx->ran_type == MM_CTX_T_GERAN_Gb) {
@@ -938,12 +951,22 @@ static int gsm48_rx_gmm_att_req(struct sgsn_mm_ctx *ctx, struct msgb *msg,
reject_cause = GMM_CAUSE_MS_ID_NOT_DERIVED;
goto rejected;
}
+ {
+ ctx->auth_state = SGSN_AUTH_AUTHENTICATE;
+ /* Ki 000102030405060708090a0b0c0d0e0f */
+ ctx->auth_triplet = (struct gsm_auth_tuple ) {
+ .key_seq = 0,
+ .rand = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 },
+ .sres = { 0x61, 0xb5, 0x69, 0xf5 },
+ .kc = { 0xd9, 0xd9, 0xc2, 0xed, 0x62, 0x7d, 0x68, 0x00 },
+ };
+ }
/* Update MM Context with currient RA and Cell ID */
ctx->ra = ra_id;
if (ctx->ran_type == MM_CTX_T_GERAN_Gb)
ctx->gb.cell_id = cid;
- else if (ctx->ran_type == MM_CTX_T_UTRAN_Iu)
- ctx->iu.sac = sac;
+ //else if (ctx->ran_type == MM_CTX_T_UTRAN_Iu)
+ //ctx->iu.sac = sac;
/* Update MM Context with other data */
ctx->drx_parms = drx_par;
@@ -1180,7 +1203,7 @@ static int gsm48_rx_gmm_ra_upd_req(struct sgsn_mm_ctx *mmctx, struct msgb *msg,
break;
}
-#error "Differentiate look-up between Iu and Gb"
+#warning "Differentiate look-up between Iu and Gb"
/* Look-up the MM context based on old RA-ID and TLLI */
mmctx = sgsn_mm_ctx_by_tlli(msgb_tlli(msg), &old_ra_id);
if (!mmctx || mmctx->mm_state == GMM_DEREGISTERED) {
@@ -1203,9 +1226,9 @@ static int gsm48_rx_gmm_ra_upd_req(struct sgsn_mm_ctx *mmctx, struct msgb *msg,
rate_ctr_inc(&mmctx->ctrg->ctr[GMM_CTR_PKTS_SIG_IN]);
/* Update the MM context with the new RA-ID */
-#error "how to obtain RA_ID in Iu case?"
- bssgp_parse_cell_id(&mmctx->ra, msgb_bcid(msg));
+#warning "how to obtain RA_ID in Iu case?"
if (mmctx->ran_type == MM_CTX_T_GERAN_Gb) {
+ bssgp_parse_cell_id(&mmctx->ra, msgb_bcid(msg));
/* Update the MM context with the new (i.e. foreign) TLLI */
mmctx->gb.tlli = msgb_tlli(msg);
}
@@ -1263,7 +1286,7 @@ rejected:
if (mmctx)
mm_ctx_cleanup_free(mmctx, "GPRS RA UPDATE REJ");
else {
- if (mmctx->ran_type == MM_CTX_T_GERAN_Gb) {
+ if (llme) {
/* TLLI unassignment */
gprs_llgmm_assign(llme, llme->tlli, 0xffffffff,
GPRS_ALGO_GEA0, NULL);
@@ -2101,20 +2124,22 @@ int gsm0408_gprs_force_reattach(struct sgsn_mm_ctx *mmctx)
/* Main entry point for incoming 04.08 GPRS messages from Iu */
int gsm0408_gprs_rcvmsg_iu(struct msgb *msg, struct gprs_ra_id *ra_id,
- uint16_t *sai, uint32_t conn_id)
+ uint16_t *sai)
{
struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_gmmh(msg);
uint8_t pdisc = gh->proto_discr & 0x0f;
struct sgsn_mm_ctx *mmctx;
int rc = -EINVAL;
- mmctx = sgsn_mm_ctx_by_conn_id(conn_id);
+ DEBUGP(DMM, "rcvmsg_iu(%s)\n", osmo_hexdump(msgb_gmmh(msg), msgb_l3len(msg)));
+
+ mmctx = sgsn_mm_ctx_by_ue_ctx(msg->dst);
if (mmctx) {
rate_ctr_inc(&mmctx->ctrg->ctr[GMM_CTR_PKTS_SIG_IN]);
if (ra_id)
- memcpy(&mmctx->ra_id, ra_id, sizeof(mmctx->ra_id));
- if (sai)
- mmctx->iu.sai = *sai;
+ memcpy(&mmctx->ra, ra_id, sizeof(mmctx->ra));
+ //if (sai)
+ //mmctx->iu.sai = *sai;
}
/* MMCTX can be NULL */
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-03 18:39:05 +0000