IuPS: osmo-sgsn: add core IuPS impl, call iu_init()
Add main Iu entry points for IuPS:
* gsm0408_gprs_rcvmsg_iu()
* sgsn_ranap_iu_event()
* sgsn_ranap_rab_ass_resp()
Add main MM context management for IuPS:
* sgsn_mm_ctx_by_ue_ctx()
* sgsn_mm_ctx_alloc_iu()
Call iu_init() from sgsn_main.c.
Add asn_debug impl ("extern" from libasn1c).
Initialize asn_debug VTY command (iu_vty_init()).
osmo-sgsn build: add libiu and libasn1c, libosmo-sigtran, libosmo-ranap
Change-Id: I469ae6ca9ef254d04ee0d2d79bdd65aebcd027b5
diff --git a/openbsc/src/gprs/gprs_sgsn.c b/openbsc/src/gprs/gprs_sgsn.c
index 9cd992b..19b0a1b 100644
--- a/openbsc/src/gprs/gprs_sgsn.c
+++ b/openbsc/src/gprs/gprs_sgsn.c
@@ -39,6 +39,7 @@
#include <openbsc/gprs_utils.h>
#include <openbsc/signal.h>
#include "openbsc/gprs_llc.h"
+#include <openbsc/iu.h>
#include <pdp.h>
@@ -130,6 +131,20 @@
sgsn->rate_ctrs = rate_ctr_group_alloc(tall_bsc_ctx, &sgsn_ctrg_desc, 0);
}
+/* look-up an SGSN MM context based on Iu UE context (struct ue_conn_ctx)*/
+struct sgsn_mm_ctx *sgsn_mm_ctx_by_ue_ctx(const void *uectx)
+{
+ struct sgsn_mm_ctx *ctx;
+
+ llist_for_each_entry(ctx, &sgsn_mm_ctxts, list) {
+ if (ctx->ran_type == MM_CTX_T_UTRAN_Iu
+ && uectx == ctx->iu.ue_ctx)
+ return ctx;
+ }
+
+ return NULL;
+}
+
/* look-up a SGSN MM context based on TLLI + RAI */
struct sgsn_mm_ctx *sgsn_mm_ctx_by_tlli(uint32_t tlli,
const struct gprs_ra_id *raid)
@@ -218,6 +233,32 @@
return ctx;
}
+/* Allocate a new SGSN MM context */
+struct sgsn_mm_ctx *sgsn_mm_ctx_alloc_iu(void *uectx)
+{
+ struct sgsn_mm_ctx *ctx;
+
+ ctx = talloc_zero(tall_bsc_ctx, struct sgsn_mm_ctx);
+ if (!ctx)
+ return NULL;
+
+ ctx->ran_type = MM_CTX_T_UTRAN_Iu;
+ ctx->iu.ue_ctx = uectx;
+ ctx->mm_state = GMM_DEREGISTERED;
+ ctx->auth_triplet.key_seq = GSM_KEY_SEQ_INVAL;
+ ctx->ctrg = rate_ctr_group_alloc(ctx, &mmctx_ctrg_desc, 0);
+
+ /* Need to get RAID from IU conn */
+ ctx->ra = ctx->iu.ue_ctx->ra_id;
+
+ INIT_LLIST_HEAD(&ctx->pdp_list);
+
+ llist_add(&ctx->list, &sgsn_mm_ctxts);
+
+ return ctx;
+}
+
+
/* this is a hard _free_ function, it doesn't clean up the PDP contexts
* in libgtp! */
static void sgsn_mm_ctx_free(struct sgsn_mm_ctx *mm)