[GPRS] BSSGP: expose more internal structures / API

2 files changed, 33 insertions, 27 deletions

diff --git a/openbsc/include/openbsc/gprs_bssgp.h b/openbsc/include/openbsc/gprs_bssgp.h
index 8fdef811..f2b94c4d 100644
--- a/openbsc/include/openbsc/gprs_bssgp.h
+++ b/openbsc/include/openbsc/gprs_bssgp.h
@@ -149,6 +149,35 @@ int bssgp_tx_status(uint8_t cause, uint16_t *bvci, struct msgb *orig_msg);
 
 /* gprs_bssgp.c */
 
+#define BVC_S_BLOCKED	0x0001
+
+/* The per-BTS context that we keep on the SGSN side of the BSSGP link */
+struct bssgp_bvc_ctx {
+	struct llist_head list;
+
+	/* parsed RA ID and Cell ID of the remote BTS */
+	struct gprs_ra_id ra_id;
+	uint16_t cell_id;
+
+	/* NSEI and BVCI of underlying Gb link.  Together they
+	 * uniquely identify a link to a BTS (5.4.4) */
+	uint16_t bvci;
+	uint16_t nsei;
+
+	uint32_t state;
+
+	struct rate_ctr_group *ctrg;
+
+	/* we might want to add this as a shortcut later, avoiding the NSVC
+	 * lookup for every packet, similar to a routing cache */
+	//struct gprs_nsvc *nsvc;
+};
+extern struct llist_head bssgp_bvc_ctxts;
+/* Find a BTS Context based on parsed RA ID and Cell ID */
+struct bssgp_bvc_ctx *btsctx_by_raid_cid(const struct gprs_ra_id *raid, uint16_t cid);
+/* Find a BTS context based on BVCI+NSEI tuple */
+struct bssgp_bvc_ctx *btsctx_by_bvci_nsei(uint16_t bvci, uint16_t nsei);
+
 #include <osmocore/tlv.h>
 
 /* BSSGP-UL-UNITDATA.ind */
diff --git a/openbsc/src/gprs/gprs_bssgp.c b/openbsc/src/gprs/gprs_bssgp.c
index f6b02bad..b9c3c783 100644
--- a/openbsc/src/gprs/gprs_bssgp.c
+++ b/openbsc/src/gprs/gprs_bssgp.c
@@ -58,37 +58,14 @@ static const struct rate_ctr_group_desc bssgp_ctrg_desc = {
 	.ctr_desc = bssgp_ctr_description,
 };
 
-#define BVC_S_BLOCKED	0x0001
-
-/* The per-BTS context that we keep on the SGSN side of the BSSGP link */
-struct bssgp_bvc_ctx {
-	struct llist_head list;
-
-	/* parsed RA ID and Cell ID of the remote BTS */
-	struct gprs_ra_id ra_id;
-	uint16_t cell_id;
-
-	/* NSEI and BVCI of underlying Gb link.  Together they
-	 * uniquely identify a link to a BTS (5.4.4) */
-	uint16_t bvci;
-	uint16_t nsei;
-
-	uint32_t state;
-
-	struct rate_ctr_group *ctrg;
-
-	/* we might want to add this as a shortcut later, avoiding the NSVC
-	 * lookup for every packet, similar to a routing cache */
-	//struct gprs_nsvc *nsvc;
-};
-static LLIST_HEAD(bts_ctxts);
+LLIST_HEAD(bssgp_bvc_ctxts);
 
 /* Find a BTS Context based on parsed RA ID and Cell ID */
 struct bssgp_bvc_ctx *btsctx_by_raid_cid(const struct gprs_ra_id *raid, uint16_t cid)
 {
 	struct bssgp_bvc_ctx *bctx;
 
-	llist_for_each_entry(bctx, &bts_ctxts, list) {
+	llist_for_each_entry(bctx, &bssgp_bvc_ctxts, list) {
 		if (!memcmp(&bctx->ra_id, raid, sizeof(bctx->ra_id)) &&
 		    bctx->cell_id == cid)
 			return bctx;
@@ -101,7 +78,7 @@ struct bssgp_bvc_ctx *btsctx_by_bvci_nsei(uint16_t bvci, uint16_t nsei)
 {
 	struct bssgp_bvc_ctx *bctx;
 
-	llist_for_each_entry(bctx, &bts_ctxts, list) {
+	llist_for_each_entry(bctx, &bssgp_bvc_ctxts, list) {
 		if (bctx->nsei == nsei && bctx->bvci == bvci)
 			return bctx;
 	}
@@ -120,7 +97,7 @@ struct bssgp_bvc_ctx *btsctx_alloc(uint16_t bvci, uint16_t nsei)
 	/* FIXME: BVCI is not unique, only BVCI+NSEI ?!? */
 	ctx->ctrg = rate_ctr_group_alloc(ctx, &bssgp_ctrg_desc, bvci);
 
-	llist_add(&ctx->list, &bts_ctxts);
+	llist_add(&ctx->list, &bssgp_bvc_ctxts);
 
 	return ctx;
 }