libosmogb: move files to proper location and fix build

1 files changed, 0 insertions, 919 deletions

diff --git a/openbsc/src/libgb/gprs_bssgp.c b/openbsc/src/libgb/gprs_bssgp.c
deleted file mode 100644
index 4b8c7302..00000000
--- a/openbsc/src/libgb/gprs_bssgp.c
+++ /dev/null
@@ -1,919 +0,0 @@
-/* GPRS BSSGP protocol implementation as per 3GPP TS 08.18 */
-
-/* (C) 2009-2012 by Harald Welte <laforge@gnumonks.org>
- *
- * All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- *
- * TODO:
- *  o  properly count incoming BVC-RESET packets in counter group
- *  o  set log context as early as possible for outgoing packets
- */
-
-#include <errno.h>
-#include <stdint.h>
-
-#include <netinet/in.h>
-
-#include <osmocom/core/msgb.h>
-#include <osmocom/gsm/tlv.h>
-#include <osmocom/core/talloc.h>
-#include <osmocom/core/rate_ctr.h>
-
-#include <osmocom/gprs/gprs_bssgp.h>
-#include <osmocom/gprs/gprs_ns.h>
-
-#include "common_vty.h"
-
-void *bssgp_tall_ctx = NULL;
-
-static const struct rate_ctr_desc bssgp_ctr_description[] = {
-	{ "packets.in",	"Packets at BSSGP Level ( In)" },
-	{ "packets.out","Packets at BSSGP Level (Out)" },
-	{ "bytes.in",	"Bytes at BSSGP Level   ( In)" },
-	{ "bytes.out",	"Bytes at BSSGP Level   (Out)" },
-	{ "blocked",	"BVC Blocking count" },
-	{ "discarded",	"BVC LLC Discarded count" },
-};
-
-static const struct rate_ctr_group_desc bssgp_ctrg_desc = {
-	.group_name_prefix = "bssgp.bss_ctx",
-	.group_description = "BSSGP Peer Statistics",
-	.num_ctr = ARRAY_SIZE(bssgp_ctr_description),
-	.ctr_desc = bssgp_ctr_description,
-};
-
-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, &bssgp_bvc_ctxts, list) {
-		if (!memcmp(&bctx->ra_id, raid, sizeof(bctx->ra_id)) &&
-		    bctx->cell_id == cid)
-			return bctx;
-	}
-	return NULL;
-}
-
-/* Find a BTS context based on BVCI+NSEI tuple */
-struct bssgp_bvc_ctx *btsctx_by_bvci_nsei(uint16_t bvci, uint16_t nsei)
-{
-	struct bssgp_bvc_ctx *bctx;
-
-	llist_for_each_entry(bctx, &bssgp_bvc_ctxts, list) {
-		if (bctx->nsei == nsei && bctx->bvci == bvci)
-			return bctx;
-	}
-	return NULL;
-}
-
-struct bssgp_bvc_ctx *btsctx_alloc(uint16_t bvci, uint16_t nsei)
-{
-	struct bssgp_bvc_ctx *ctx;
-
-	ctx = talloc_zero(bssgp_tall_ctx, struct bssgp_bvc_ctx);
-	if (!ctx)
-		return NULL;
-	ctx->bvci = bvci;
-	ctx->nsei = nsei;
-	/* FIXME: BVCI is not unique, only BVCI+NSEI ?!? */
-	ctx->ctrg = rate_ctr_group_alloc(ctx, &bssgp_ctrg_desc, bvci);
-
-	llist_add(&ctx->list, &bssgp_bvc_ctxts);
-
-	return ctx;
-}
-
-/* Chapter 10.4.5: Flow Control BVC ACK */
-static int bssgp_tx_fc_bvc_ack(uint16_t nsei, uint8_t tag, uint16_t ns_bvci)
-{
-	struct msgb *msg = bssgp_msgb_alloc();
-	struct bssgp_normal_hdr *bgph =
-			(struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph));
-
-	msgb_nsei(msg) = nsei;
-	msgb_bvci(msg) = ns_bvci;
-
-	bgph->pdu_type = BSSGP_PDUT_FLOW_CONTROL_BVC_ACK;
-	msgb_tvlv_put(msg, BSSGP_IE_TAG, 1, &tag);
-
-	return gprs_ns_sendmsg(bssgp_nsi, msg);
-}
-
-/* 10.3.7 SUSPEND-ACK PDU */
-int bssgp_tx_suspend_ack(uint16_t nsei, uint32_t tlli,
-			 const struct gprs_ra_id *ra_id, uint8_t suspend_ref)
-{
-	struct msgb *msg = bssgp_msgb_alloc();
-	struct bssgp_normal_hdr *bgph =
-		(struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph));
-	uint32_t _tlli;
-	uint8_t ra[6];
-
-	msgb_nsei(msg) = nsei;
-	msgb_bvci(msg) = 0; /* Signalling */
-	bgph->pdu_type = BSSGP_PDUT_SUSPEND_ACK;
-
-	_tlli = htonl(tlli);
-	msgb_tvlv_put(msg, BSSGP_IE_TLLI, 4, (uint8_t *) &_tlli);
-	gsm48_construct_ra(ra, ra_id);
-	msgb_tvlv_put(msg, BSSGP_IE_ROUTEING_AREA, 6, ra);
-	msgb_tvlv_put(msg, BSSGP_IE_SUSPEND_REF_NR, 1, &suspend_ref);
-
-	return gprs_ns_sendmsg(bssgp_nsi, msg);
-}
-
-/* 10.3.8 SUSPEND-NACK PDU */
-int bssgp_tx_suspend_nack(uint16_t nsei, uint32_t tlli,
-			  const struct gprs_ra_id *ra_id,
-			  uint8_t *cause)
-{
-	struct msgb *msg = bssgp_msgb_alloc();
-	struct bssgp_normal_hdr *bgph =
-		(struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph));
-	uint32_t _tlli;
-	uint8_t ra[6];
-
-	msgb_nsei(msg) = nsei;
-	msgb_bvci(msg) = 0; /* Signalling */
-	bgph->pdu_type = BSSGP_PDUT_SUSPEND_NACK;
-
-	_tlli = htonl(tlli);
-	msgb_tvlv_put(msg, BSSGP_IE_TLLI, 4, (uint8_t *) &_tlli);
-	gsm48_construct_ra(ra, ra_id);
-	msgb_tvlv_put(msg, BSSGP_IE_ROUTEING_AREA, 6, ra);
-	if (cause)
-		msgb_tvlv_put(msg, BSSGP_IE_CAUSE, 1, cause);
-
-	return gprs_ns_sendmsg(bssgp_nsi, msg);
-}
-
-/* 10.3.10 RESUME-ACK PDU */
-int bssgp_tx_resume_ack(uint16_t nsei, uint32_t tlli,
-			const struct gprs_ra_id *ra_id)
-{
-	struct msgb *msg = bssgp_msgb_alloc();
-	struct bssgp_normal_hdr *bgph =
-		(struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph));
-	uint32_t _tlli;
-	uint8_t ra[6];
-
-	msgb_nsei(msg) = nsei;
-	msgb_bvci(msg) = 0; /* Signalling */
-	bgph->pdu_type = BSSGP_PDUT_RESUME_ACK;
-
-	_tlli = htonl(tlli);
-	msgb_tvlv_put(msg, BSSGP_IE_TLLI, 4, (uint8_t *) &_tlli);
-	gsm48_construct_ra(ra, ra_id);
-	msgb_tvlv_put(msg, BSSGP_IE_ROUTEING_AREA, 6, ra);
-
-	return gprs_ns_sendmsg(bssgp_nsi, msg);
-}
-
-/* 10.3.11 RESUME-NACK PDU */
-int bssgp_tx_resume_nack(uint16_t nsei, uint32_t tlli,
-			 const struct gprs_ra_id *ra_id, uint8_t *cause)
-{
-	struct msgb *msg = bssgp_msgb_alloc();
-	struct bssgp_normal_hdr *bgph =
-		(struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph));
-	uint32_t _tlli;
-	uint8_t ra[6];
-
-	msgb_nsei(msg) = nsei;
-	msgb_bvci(msg) = 0; /* Signalling */
-	bgph->pdu_type = BSSGP_PDUT_SUSPEND_NACK;
-
-	_tlli = htonl(tlli);
-	msgb_tvlv_put(msg, BSSGP_IE_TLLI, 4, (uint8_t *) &_tlli);
-	gsm48_construct_ra(ra, ra_id);
-	msgb_tvlv_put(msg, BSSGP_IE_ROUTEING_AREA, 6, ra);
-	if (cause)
-		msgb_tvlv_put(msg, BSSGP_IE_CAUSE, 1, cause);
-
-	return gprs_ns_sendmsg(bssgp_nsi, msg);
-}
-
-uint16_t bssgp_parse_cell_id(struct gprs_ra_id *raid, const uint8_t *buf)
-{
-	/* 6 octets RAC */
-	gsm48_parse_ra(raid, buf);
-	/* 2 octets CID */
-	return ntohs(*(uint16_t *) (buf+6));
-}
-
-int bssgp_create_cell_id(uint8_t *buf, const struct gprs_ra_id *raid,
-			 uint16_t cid)
-{
-	uint16_t *out_cid = (uint16_t *) (buf + 6);
-	/* 6 octets RAC */
-	gsm48_construct_ra(buf, raid);
-	/* 2 octets CID */
-	*out_cid = htons(cid);
-
-	return 8;
-}
-
-/* Chapter 8.4 BVC-Reset Procedure */
-static int bssgp_rx_bvc_reset(struct msgb *msg, struct tlv_parsed *tp,	
-			      uint16_t ns_bvci)
-{
-	struct osmo_bssgp_prim nmp;
-	struct bssgp_bvc_ctx *bctx;
-	uint16_t nsei = msgb_nsei(msg);
-	uint16_t bvci;
-	int rc;
-
-	bvci = ntohs(*(uint16_t *)TLVP_VAL(tp, BSSGP_IE_BVCI));
-	DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx RESET cause=%s\n", bvci,
-		bssgp_cause_str(*TLVP_VAL(tp, BSSGP_IE_CAUSE)));
-
-	/* look-up or create the BTS context for this BVC */
-	bctx = btsctx_by_bvci_nsei(bvci, nsei);
-	if (!bctx)
-		bctx = btsctx_alloc(bvci, nsei);
-
-	/* As opposed to NS-VCs, BVCs are NOT blocked after RESET */
-	bctx->state &= ~BVC_S_BLOCKED;
-
-	/* When we receive a BVC-RESET PDU (at least of a PTP BVCI), the BSS
-	 * informs us about its RAC + Cell ID, so we can create a mapping */
-	if (bvci != 0 && bvci != 1) {
-		if (!TLVP_PRESENT(tp, BSSGP_IE_CELL_ID)) {
-			LOGP(DBSSGP, LOGL_ERROR, "BSSGP BVCI=%u Rx RESET "
-				"missing mandatory IE\n", bvci);
-			return -EINVAL;
-		}
-		/* actually extract RAC / CID */
-		bctx->cell_id = bssgp_parse_cell_id(&bctx->ra_id,
-						TLVP_VAL(tp, BSSGP_IE_CELL_ID));
-		LOGP(DBSSGP, LOGL_NOTICE, "Cell %u-%u-%u-%u CI %u on BVCI %u\n",
-			bctx->ra_id.mcc, bctx->ra_id.mnc, bctx->ra_id.lac,
-			bctx->ra_id.rac, bctx->cell_id, bvci);
-	}
-
-	/* Send NM_BVC_RESET.ind to NM */
-	memset(&nmp, 0, sizeof(nmp));
-	nmp.nsei = nsei;
-	nmp.bvci = bvci;
-	nmp.tp = tp;
-	nmp.ra_id = &bctx->ra_id;
-	osmo_prim_init(&nmp.oph, SAP_BSSGP_NM, PRIM_NM_BVC_RESET,
-			PRIM_OP_INDICATION, msg);
-	bssgp_prim_cb(&nmp.oph, NULL);
-
-	/* Acknowledge the RESET to the BTS */
-	rc = bssgp_tx_simple_bvci(BSSGP_PDUT_BVC_RESET_ACK,
-				  nsei, bvci, ns_bvci);
-	return 0;
-}
-
-static int bssgp_rx_bvc_block(struct msgb *msg, struct tlv_parsed *tp)
-{
-	struct osmo_bssgp_prim nmp;
-	uint16_t bvci;
-	struct bssgp_bvc_ctx *ptp_ctx;
-
-	bvci = ntohs(*(uint16_t *)TLVP_VAL(tp, BSSGP_IE_BVCI));
-	if (bvci == BVCI_SIGNALLING) {
-		/* 8.3.2: Signalling BVC shall never be blocked */
-		LOGP(DBSSGP, LOGL_ERROR, "NSEI=%u/BVCI=%u "
-			"received block for signalling BVC!?!\n",
-			msgb_nsei(msg), msgb_bvci(msg));
-		return 0;
-	}
-
-	LOGP(DBSSGP, LOGL_INFO, "BSSGP Rx BVCI=%u BVC-BLOCK\n", bvci);
-
-	ptp_ctx = btsctx_by_bvci_nsei(bvci, msgb_nsei(msg));
-	if (!ptp_ctx)
-		return bssgp_tx_status(BSSGP_CAUSE_UNKNOWN_BVCI, &bvci, msg);
-
-	ptp_ctx->state |= BVC_S_BLOCKED;
-	rate_ctr_inc(&ptp_ctx->ctrg->ctr[BSSGP_CTR_BLOCKED]);
-
-	/* Send NM_BVC_BLOCK.ind to NM */
-	memset(&nmp, 0, sizeof(nmp));
-	nmp.nsei = msgb_nsei(msg);
-	nmp.bvci = bvci;
-	nmp.tp = tp;
-	osmo_prim_init(&nmp.oph, SAP_BSSGP_NM, PRIM_NM_BVC_BLOCK,
-			PRIM_OP_INDICATION, msg);
-	bssgp_prim_cb(&nmp.oph, NULL);
-
-	/* We always acknowledge the BLOCKing */
-	return bssgp_tx_simple_bvci(BSSGP_PDUT_BVC_BLOCK_ACK, msgb_nsei(msg),
-				    bvci, msgb_bvci(msg));
-};
-
-static int bssgp_rx_bvc_unblock(struct msgb *msg, struct tlv_parsed *tp)
-{
-	struct osmo_bssgp_prim nmp;
-	uint16_t bvci;
-	struct bssgp_bvc_ctx *ptp_ctx;
-
-	bvci = ntohs(*(uint16_t *)TLVP_VAL(tp, BSSGP_IE_BVCI));
-	if (bvci == BVCI_SIGNALLING) {
-		/* 8.3.2: Signalling BVC shall never be blocked */
-		LOGP(DBSSGP, LOGL_ERROR, "NSEI=%u/BVCI=%u "
-			"received unblock for signalling BVC!?!\n",
-			msgb_nsei(msg), msgb_bvci(msg));
-		return 0;
-	}
-
-	DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx BVC-UNBLOCK\n", bvci);
-
-	ptp_ctx = btsctx_by_bvci_nsei(bvci, msgb_nsei(msg));
-	if (!ptp_ctx)
-		return bssgp_tx_status(BSSGP_CAUSE_UNKNOWN_BVCI, &bvci, msg);
-
-	ptp_ctx->state &= ~BVC_S_BLOCKED;
-
-	/* Send NM_BVC_UNBLOCK.ind to NM */
-	memset(&nmp, 0, sizeof(nmp));
-	nmp.nsei = msgb_nsei(msg);
-	nmp.bvci = bvci;
-	nmp.tp = tp;
-	osmo_prim_init(&nmp.oph, SAP_BSSGP_NM, PRIM_NM_BVC_UNBLOCK,
-			PRIM_OP_INDICATION, msg);
-	bssgp_prim_cb(&nmp.oph, NULL);
-
-	/* We always acknowledge the unBLOCKing */
-	return bssgp_tx_simple_bvci(BSSGP_PDUT_BVC_UNBLOCK_ACK, msgb_nsei(msg),
-				    bvci, msgb_bvci(msg));
-};
-
-/* Uplink unit-data */
-static int bssgp_rx_ul_ud(struct msgb *msg, struct tlv_parsed *tp,
-			  struct bssgp_bvc_ctx *ctx)
-{
-	struct osmo_bssgp_prim gbp;
-	struct bssgp_ud_hdr *budh = (struct bssgp_ud_hdr *) msgb_bssgph(msg);
-
-	/* extract TLLI and parse TLV IEs */
-	msgb_tlli(msg) = ntohl(budh->tlli);
-
-	DEBUGP(DBSSGP, "BSSGP TLLI=0x%08x Rx UPLINK-UNITDATA\n", msgb_tlli(msg));
-
-	/* Cell ID and LLC_PDU are the only mandatory IE */
-	if (!TLVP_PRESENT(tp, BSSGP_IE_CELL_ID) ||
-	    !TLVP_PRESENT(tp, BSSGP_IE_LLC_PDU)) {
-		LOGP(DBSSGP, LOGL_ERROR, "BSSGP TLLI=0x%08x Rx UL-UD "
-			"missing mandatory IE\n", msgb_tlli(msg));
-		return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg);
-	}
-
-	/* store pointer to LLC header and CELL ID in msgb->cb */
-	msgb_llch(msg) = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_LLC_PDU);
-	msgb_bcid(msg) = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_CELL_ID);
-
-	/* Send BSSGP_UL_UD.ind to NM */
-	memset(&gbp, 0, sizeof(gbp));
-	gbp.nsei = ctx->nsei;
-	gbp.bvci = ctx->bvci;
-	gbp.tlli = msgb_tlli(msg);
-	gbp.tp = tp;
-	osmo_prim_init(&gbp.oph, SAP_BSSGP_LL, PRIM_BSSGP_UL_UD,
-			PRIM_OP_INDICATION, msg);
-	return bssgp_prim_cb(&gbp.oph, NULL);
-}
-
-static int bssgp_rx_suspend(struct msgb *msg, struct tlv_parsed *tp,
-			    struct bssgp_bvc_ctx *ctx)
-{
-	struct osmo_bssgp_prim gbp;
-	struct bssgp_normal_hdr *bgph =
-			(struct bssgp_normal_hdr *) msgb_bssgph(msg);
-	struct gprs_ra_id raid;
-	uint32_t tlli;
-	int rc;
-
-	if (!TLVP_PRESENT(tp, BSSGP_IE_TLLI) ||
-	    !TLVP_PRESENT(tp, BSSGP_IE_ROUTEING_AREA)) {
-		LOGP(DBSSGP, LOGL_ERROR, "BSSGP BVCI=%u Rx SUSPEND "
-			"missing mandatory IE\n", ctx->bvci);
-		return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg);
-	}
-
-	tlli = ntohl(*(uint32_t *)TLVP_VAL(tp, BSSGP_IE_TLLI));
-
-	DEBUGP(DBSSGP, "BSSGP BVCI=%u TLLI=0x%08x Rx SUSPEND\n",
-		ctx->bvci, tlli);
-
-	gsm48_parse_ra(&raid, TLVP_VAL(tp, BSSGP_IE_ROUTEING_AREA));
-
-	/* Inform GMM about the SUSPEND request */
-	memset(&gbp, 0, sizeof(gbp));
-	gbp.nsei = msgb_nsei(msg);
-	gbp.bvci = ctx->bvci;
-	gbp.tlli = tlli;
-	gbp.ra_id = &raid;
-	osmo_prim_init(&gbp.oph, SAP_BSSGP_GMM, PRIM_BSSGP_GMM_SUSPEND,
-			PRIM_OP_REQUEST, msg);
-
-	rc = bssgp_prim_cb(&gbp.oph, NULL);
-	if (rc < 0)
-		return bssgp_tx_suspend_nack(msgb_nsei(msg), tlli, &raid, NULL);
-
-	bssgp_tx_suspend_ack(msgb_nsei(msg), tlli, &raid, 0);
-
-	return 0;
-}
-
-static int bssgp_rx_resume(struct msgb *msg, struct tlv_parsed *tp,
-			   struct bssgp_bvc_ctx *ctx)
-{
-	struct osmo_bssgp_prim gbp;
-	struct bssgp_normal_hdr *bgph =
-			(struct bssgp_normal_hdr *) msgb_bssgph(msg);
-	struct gprs_ra_id raid;
-	uint32_t tlli;
-	uint8_t suspend_ref;
-	int rc;
-
-	if (!TLVP_PRESENT(tp, BSSGP_IE_TLLI) ||
-	    !TLVP_PRESENT(tp, BSSGP_IE_ROUTEING_AREA) ||
-	    !TLVP_PRESENT(tp, BSSGP_IE_SUSPEND_REF_NR)) {
-		LOGP(DBSSGP, LOGL_ERROR, "BSSGP BVCI=%u Rx RESUME "
-			"missing mandatory IE\n", ctx->bvci);
-		return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg);
-	}
-
-	tlli = ntohl(*(uint32_t *)TLVP_VAL(tp, BSSGP_IE_TLLI));
-	suspend_ref = *TLVP_VAL(tp, BSSGP_IE_SUSPEND_REF_NR);
-
-	DEBUGP(DBSSGP, "BSSGP BVCI=%u TLLI=0x%08x Rx RESUME\n", ctx->bvci, tlli);
-
-	gsm48_parse_ra(&raid, TLVP_VAL(tp, BSSGP_IE_ROUTEING_AREA));
-
-	/* Inform GMM about the RESUME request */
-	memset(&gbp, 0, sizeof(gbp));
-	gbp.nsei = msgb_nsei(msg);
-	gbp.bvci = ctx->bvci;
-	gbp.tlli = tlli;
-	gbp.ra_id = &raid;
-	gbp.u.resume.suspend_ref = suspend_ref;
-	osmo_prim_init(&gbp.oph, SAP_BSSGP_GMM, PRIM_BSSGP_GMM_RESUME,
-			PRIM_OP_REQUEST, msg);
-
-	rc = bssgp_prim_cb(&gbp.oph, NULL);
-	if (rc < 0)
-		return bssgp_tx_resume_nack(msgb_nsei(msg), tlli, &raid,
-					    NULL);
-
-	bssgp_tx_resume_ack(msgb_nsei(msg), tlli, &raid);
-	return 0;
-}
-
-
-static int bssgp_rx_llc_disc(struct msgb *msg, struct tlv_parsed *tp,
-			     struct bssgp_bvc_ctx *ctx)
-{
-	struct osmo_bssgp_prim nmp;
-	uint32_t tlli = 0;
-
-	if (!TLVP_PRESENT(tp, BSSGP_IE_TLLI) ||
-	    !TLVP_PRESENT(tp, BSSGP_IE_LLC_FRAMES_DISCARDED) ||
-	    !TLVP_PRESENT(tp, BSSGP_IE_BVCI) ||
-	    !TLVP_PRESENT(tp, BSSGP_IE_NUM_OCT_AFF)) {
-		LOGP(DBSSGP, LOGL_ERROR, "BSSGP BVCI=%u Rx LLC DISCARDED "
-			"missing mandatory IE\n", ctx->bvci);
-	}
-
-	if (TLVP_PRESENT(tp, BSSGP_IE_TLLI))
-		tlli = ntohl(*(uint32_t *)TLVP_VAL(tp, BSSGP_IE_TLLI));
-
-	DEBUGP(DBSSGP, "BSSGP BVCI=%u TLLI=%08x Rx LLC DISCARDED\n",
-		ctx->bvci, tlli);
-
-	rate_ctr_inc(&ctx->ctrg->ctr[BSSGP_CTR_DISCARDED]);
-
-	/* send NM_LLC_DISCARDED to NM */
-	memset(&nmp, 0, sizeof(nmp));
-	nmp.nsei = msgb_nsei(msg);
-	nmp.bvci = ctx->bvci;
-	nmp.tlli = tlli;
-	nmp.tp = tp;
-	osmo_prim_init(&nmp.oph, SAP_BSSGP_NM, PRIM_NM_LLC_DISCARDED,
-			PRIM_OP_INDICATION, msg);
-
-	return bssgp_prim_cb(&nmp.oph, NULL);
-}
-
-static int bssgp_rx_fc_bvc(struct msgb *msg, struct tlv_parsed *tp,
-			   struct bssgp_bvc_ctx *bctx)
-{
-
-	DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx Flow Control BVC\n",
-		bctx->bvci);
-
-	if (!TLVP_PRESENT(tp, BSSGP_IE_TAG) ||
-	    !TLVP_PRESENT(tp, BSSGP_IE_BVC_BUCKET_SIZE) ||
-	    !TLVP_PRESENT(tp, BSSGP_IE_BUCKET_LEAK_RATE) ||
-	    !TLVP_PRESENT(tp, BSSGP_IE_BMAX_DEFAULT_MS) ||
-	    !TLVP_PRESENT(tp, BSSGP_IE_R_DEFAULT_MS)) {
-		LOGP(DBSSGP, LOGL_ERROR, "BSSGP BVCI=%u Rx FC BVC "
-			"missing mandatory IE\n", bctx->bvci);
-		return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg);
-	}
-
-	/* FIXME: actually implement flow control */
-
-	/* Send FLOW_CONTROL_BVC_ACK */
-	return bssgp_tx_fc_bvc_ack(msgb_nsei(msg), *TLVP_VAL(tp, BSSGP_IE_TAG),
-				   msgb_bvci(msg));
-}
-
-/* Receive a BSSGP PDU from a BSS on a PTP BVCI */
-static int bssgp_rx_ptp(struct msgb *msg, struct tlv_parsed *tp,
-			struct bssgp_bvc_ctx *bctx)
-{
-	struct bssgp_normal_hdr *bgph =
-			(struct bssgp_normal_hdr *) msgb_bssgph(msg);
-	uint8_t pdu_type = bgph->pdu_type;
-	int rc = 0;
-
-	/* If traffic is received on a BVC that is marked as blocked, the
-	 * received PDU shall not be accepted and a STATUS PDU (Cause value:
-	 * BVC Blocked) shall be sent to the peer entity on the signalling BVC */
-	if (bctx->state & BVC_S_BLOCKED && pdu_type != BSSGP_PDUT_STATUS) {
-		uint16_t bvci = msgb_bvci(msg);
-		return bssgp_tx_status(BSSGP_CAUSE_BVCI_BLOCKED, &bvci, msg);
-	}
-
-	switch (pdu_type) {
-	case BSSGP_PDUT_UL_UNITDATA:
-		/* some LLC data from the MS */
-		rc = bssgp_rx_ul_ud(msg, tp, bctx);
-		break;
-	case BSSGP_PDUT_RA_CAPABILITY:
-		/* BSS requests RA capability or IMSI */
-		DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx RA CAPABILITY UPDATE\n",
-			bctx->bvci);
-		/* FIXME: send GMM_RA_CAPABILITY_UPDATE.ind to GMM */
-		/* FIXME: send RA_CAPA_UPDATE_ACK */
-		break;
-	case BSSGP_PDUT_RADIO_STATUS:
-		DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx RADIO STATUS\n", bctx->bvci);
-		/* BSS informs us of some exception */
-		/* FIXME: send GMM_RADIO_STATUS.ind to GMM */
-		break;
-	case BSSGP_PDUT_FLOW_CONTROL_BVC:
-		/* BSS informs us of available bandwidth in Gb interface */
-		rc = bssgp_rx_fc_bvc(msg, tp, bctx);
-		break;
-	case BSSGP_PDUT_FLOW_CONTROL_MS:
-		/* BSS informs us of available bandwidth to one MS */
-		DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx Flow Control MS\n",
-			bctx->bvci);
-		/* FIXME: actually implement flow control */
-		/* FIXME: Send FLOW_CONTROL_MS_ACK */
-		break;
-	case BSSGP_PDUT_STATUS:
-		/* Some exception has occurred */
-		/* FIXME: send NM_STATUS.ind to NM */
-	case BSSGP_PDUT_DOWNLOAD_BSS_PFC:
-	case BSSGP_PDUT_CREATE_BSS_PFC_ACK:
-	case BSSGP_PDUT_CREATE_BSS_PFC_NACK:
-	case BSSGP_PDUT_MODIFY_BSS_PFC:
-	case BSSGP_PDUT_DELETE_BSS_PFC_ACK:
-		DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx PDU type 0x%02x not [yet] "
-			"implemented\n", bctx->bvci, pdu_type);
-		rc = bssgp_tx_status(BSSGP_CAUSE_PDU_INCOMP_FEAT, NULL, msg);
-		break;
-	/* those only exist in the SGSN -> BSS direction */
-	case BSSGP_PDUT_DL_UNITDATA:
-	case BSSGP_PDUT_PAGING_PS:
-	case BSSGP_PDUT_PAGING_CS:
-	case BSSGP_PDUT_RA_CAPA_UPDATE_ACK:
-	case BSSGP_PDUT_FLOW_CONTROL_BVC_ACK:
-	case BSSGP_PDUT_FLOW_CONTROL_MS_ACK:
-		DEBUGP(DBSSGP, "BSSGP BVCI=%u PDU type 0x%02x only exists "
-			"in DL\n", bctx->bvci, pdu_type);
-		bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg);
-		rc = -EINVAL;
-		break;
-	default:
-		DEBUGP(DBSSGP, "BSSGP BVCI=%u PDU type 0x%02x unknown\n",
-			bctx->bvci, pdu_type);
-		rc = bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg);
-		break;
-	}
-
-	return rc;
-}
-
-/* Receive a BSSGP PDU from a BSS on a SIGNALLING BVCI */
-static int bssgp_rx_sign(struct msgb *msg, struct tlv_parsed *tp,
-			 struct bssgp_bvc_ctx *bctx)
-{
-	struct bssgp_normal_hdr *bgph =
-			(struct bssgp_normal_hdr *) msgb_bssgph(msg);
-	uint8_t pdu_type = bgph->pdu_type;
-	int rc = 0;
-	uint16_t ns_bvci = msgb_bvci(msg);
-	uint16_t bvci;
-
-	switch (bgph->pdu_type) {
-	case BSSGP_PDUT_SUSPEND:
-		/* MS wants to suspend */
-		rc = bssgp_rx_suspend(msg, tp, bctx);
-		break;
-	case BSSGP_PDUT_RESUME:
-		/* MS wants to resume */
-		rc = bssgp_rx_resume(msg, tp, bctx);
-		break;
-	case BSSGP_PDUT_FLUSH_LL_ACK:
-		/* BSS informs us it has performed LL FLUSH */
-		DEBUGP(DBSSGP, "BSSGP Rx BVCI=%u FLUSH LL ACK\n", bctx->bvci);
-		/* FIXME: send NM_FLUSH_LL.res to NM */
-		break;
-	case BSSGP_PDUT_LLC_DISCARD:
-		/* BSS informs that some LLC PDU's have been discarded */
-		rc = bssgp_rx_llc_disc(msg, tp, bctx);
-		break;
-	case BSSGP_PDUT_BVC_BLOCK:
-		/* BSS tells us that BVC shall be blocked */
-		if (!TLVP_PRESENT(tp, BSSGP_IE_BVCI) ||
-		    !TLVP_PRESENT(tp, BSSGP_IE_CAUSE)) {
-			LOGP(DBSSGP, LOGL_ERROR, "BSSGP Rx BVC-BLOCK "
-				"missing mandatory IE\n");
-			goto err_mand_ie;
-		}
-		rc = bssgp_rx_bvc_block(msg, tp);
-		break;
-	case BSSGP_PDUT_BVC_UNBLOCK:
-		/* BSS tells us that BVC shall be unblocked */
-		if (!TLVP_PRESENT(tp, BSSGP_IE_BVCI)) {
-			LOGP(DBSSGP, LOGL_ERROR, "BSSGP Rx BVC-UNBLOCK "
-				"missing mandatory IE\n");
-			goto err_mand_ie;
-		}
-		rc = bssgp_rx_bvc_unblock(msg, tp);
-		break;
-	case BSSGP_PDUT_BVC_RESET:
-		/* BSS tells us that BVC init is required */
-		if (!TLVP_PRESENT(tp, BSSGP_IE_BVCI) ||
-		    !TLVP_PRESENT(tp, BSSGP_IE_CAUSE)) {
-			LOGP(DBSSGP, LOGL_ERROR, "BSSGP Rx BVC-RESET "
-				"missing mandatory IE\n");
-			goto err_mand_ie;
-		}
-		rc = bssgp_rx_bvc_reset(msg, tp, ns_bvci);
-		break;
-	case BSSGP_PDUT_STATUS:
-		/* Some exception has occurred */
-		DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx BVC STATUS\n", bctx->bvci);
-		/* FIXME: send NM_STATUS.ind to NM */
-		break;
-	/* those only exist in the SGSN -> BSS direction */
-	case BSSGP_PDUT_PAGING_PS:
-	case BSSGP_PDUT_PAGING_CS:
-	case BSSGP_PDUT_SUSPEND_ACK:
-	case BSSGP_PDUT_SUSPEND_NACK:
-	case BSSGP_PDUT_RESUME_ACK:
-	case BSSGP_PDUT_RESUME_NACK:
-	case BSSGP_PDUT_FLUSH_LL:
-	case BSSGP_PDUT_BVC_BLOCK_ACK:
-	case BSSGP_PDUT_BVC_UNBLOCK_ACK:
-	case BSSGP_PDUT_SGSN_INVOKE_TRACE:
-		DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx PDU type 0x%02x only exists "
-			"in DL\n", bctx->bvci, pdu_type);
-		bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg);
-		rc = -EINVAL;
-		break;
-	default:
-		DEBUGP(DBSSGP, "BSSGP BVCI=%u Rx PDU type 0x%02x unknown\n",
-			bctx->bvci, pdu_type);
-		rc = bssgp_tx_status(BSSGP_CAUSE_PROTO_ERR_UNSPEC, NULL, msg);
-		break;
-	}
-
-	return rc;
-err_mand_ie:
-	return bssgp_tx_status(BSSGP_CAUSE_MISSING_MAND_IE, NULL, msg);
-}
-
-/* We expect msgb_bssgph() to point to the BSSGP header */
-int bssgp_rcvmsg(struct msgb *msg)
-{
-	struct bssgp_normal_hdr *bgph =
-			(struct bssgp_normal_hdr *) msgb_bssgph(msg);
-	struct bssgp_ud_hdr *budh = (struct bssgp_ud_hdr *) msgb_bssgph(msg);
-	struct tlv_parsed tp;
-	struct bssgp_bvc_ctx *bctx;
-	uint8_t pdu_type = bgph->pdu_type;
-	uint16_t ns_bvci = msgb_bvci(msg);
-	int data_len;
-	int rc = 0;
-
-	/* Identifiers from DOWN: NSEI, BVCI (both in msg->cb) */
-
-	/* UNITDATA BSSGP headers have TLLI in front */
-	if (pdu_type != BSSGP_PDUT_UL_UNITDATA &&
-	    pdu_type != BSSGP_PDUT_DL_UNITDATA) {
-		data_len = msgb_bssgp_len(msg) - sizeof(*bgph);
-		rc = bssgp_tlv_parse(&tp, bgph->data, data_len);
-	} else {
-		data_len = msgb_bssgp_len(msg) - sizeof(*budh);
-		rc = bssgp_tlv_parse(&tp, budh->data, data_len);
-	}
-
-	/* look-up or create the BTS context for this BVC */
-	bctx = btsctx_by_bvci_nsei(ns_bvci, msgb_nsei(msg));
-	/* Only a RESET PDU can create a new BVC context */
-	if (!bctx && pdu_type != BSSGP_PDUT_BVC_RESET) {
-		LOGP(DBSSGP, LOGL_NOTICE, "NSEI=%u/BVCI=%u Rejecting PDU "
-			"type %u for unknown BVCI\n", msgb_nsei(msg), ns_bvci,
-			pdu_type);
-		return bssgp_tx_status(BSSGP_CAUSE_UNKNOWN_BVCI, NULL, msg);
-	}
-
-	if (bctx) {
-		log_set_context(GPRS_CTX_BVC, bctx);
-		rate_ctr_inc(&bctx->ctrg->ctr[BSSGP_CTR_PKTS_IN]);
-		rate_ctr_add(&bctx->ctrg->ctr[BSSGP_CTR_BYTES_IN],
-			     msgb_bssgp_len(msg));
-	}
-
-	if (ns_bvci == BVCI_SIGNALLING)
-		rc = bssgp_rx_sign(msg, &tp, bctx);
-	else if (ns_bvci == BVCI_PTM)
-		rc = bssgp_tx_status(BSSGP_CAUSE_PDU_INCOMP_FEAT, NULL, msg);
-	else
-		rc = bssgp_rx_ptp(msg, &tp, bctx);
-
-	return rc;
-}
-
-int bssgp_tx_dl_ud(struct msgb *msg, uint16_t pdu_lifetime,
-		   struct bssgp_dl_ud_par *dup)
-{
-	struct bssgp_bvc_ctx *bctx;
-	struct bssgp_ud_hdr *budh;
-	uint8_t llc_pdu_tlv_hdr_len = 2;
-	uint8_t *llc_pdu_tlv;
-	uint16_t msg_len = msg->len;
-	uint16_t bvci = msgb_bvci(msg);
-	uint16_t nsei = msgb_nsei(msg);
-	uint16_t _pdu_lifetime = htons(pdu_lifetime); /* centi-seconds */
-	uint16_t drx_params;
-
-	/* Identifiers from UP: TLLI, BVCI, NSEI (all in msgb->cb) */
-	if (bvci <= BVCI_PTM ) {
-		LOGP(DBSSGP, LOGL_ERROR, "Cannot send DL-UD to BVCI %u\n",
-			bvci);
-		return -EINVAL;
-	}
-
-	bctx = btsctx_by_bvci_nsei(bvci, nsei);
-	if (!bctx) {
-		/* FIXME: don't simply create missing context, but reject message */
-		bctx = btsctx_alloc(bvci, nsei);
-	}
-
-	if (msg->len > TVLV_MAX_ONEBYTE)
-		llc_pdu_tlv_hdr_len += 1;
-
-	/* prepend the tag and length of the LLC-PDU TLV */
-	llc_pdu_tlv = msgb_push(msg, llc_pdu_tlv_hdr_len);
-	llc_pdu_tlv[0] = BSSGP_IE_LLC_PDU;
-	if (llc_pdu_tlv_hdr_len > 2) {
-		llc_pdu_tlv[1] = msg_len >> 8;
-		llc_pdu_tlv[2] = msg_len & 0xff;
-	} else {
-		llc_pdu_tlv[1] = msg_len & 0x7f;
-		llc_pdu_tlv[1] |= 0x80;
-	}
-
-	/* FIXME: optional elements: Alignment, UTRAN CCO, LSA, PFI */
-
-	if (dup) {
-		/* Old TLLI to help BSS map from old->new */
-		if (dup->tlli) {
-			uint32_t tlli = htonl(*dup->tlli);
-			msgb_tvlv_push(msg, BSSGP_IE_TLLI, 4, (uint8_t *) &tlli);
-		}
-
-		/* IMSI */
-		if (strlen(dup->imsi)) {
-			uint8_t mi[10];
-			int imsi_len = gsm48_generate_mid_from_imsi(mi, dup->imsi);
-			if (imsi_len > 2)
-				msgb_tvlv_push(msg, BSSGP_IE_IMSI,
-						imsi_len-2, mi+2);
-		}
-
-		/* DRX parameters */
-		drx_params = htons(dup->drx_parms);
-		msgb_tvlv_push(msg, BSSGP_IE_DRX_PARAMS, 2,
-				(uint8_t *) &drx_params);
-
-		/* FIXME: Priority */
-
-		/* MS Radio Access Capability */
-		if (dup->ms_ra_cap.len)
-			msgb_tvlv_push(msg, BSSGP_IE_MS_RADIO_ACCESS_CAP,
-					dup->ms_ra_cap.len, dup->ms_ra_cap.v);
-
-	}
-
-	/* prepend the pdu lifetime */
-	msgb_tvlv_push(msg, BSSGP_IE_PDU_LIFETIME, 2, (uint8_t *)&_pdu_lifetime);
-
-	/* prepend the QoS profile, TLLI and pdu type */
-	budh = (struct bssgp_ud_hdr *) msgb_push(msg, sizeof(*budh));
-	memcpy(budh->qos_profile, dup->qos_profile, sizeof(budh->qos_profile));
-	budh->tlli = htonl(msgb_tlli(msg));
-	budh->pdu_type = BSSGP_PDUT_DL_UNITDATA;
-
-	rate_ctr_inc(&bctx->ctrg->ctr[BSSGP_CTR_PKTS_OUT]);
-	rate_ctr_add(&bctx->ctrg->ctr[BSSGP_CTR_BYTES_OUT], msg->len);
-
-	/* Identifiers down: BVCI, NSEI (in msgb->cb) */
-
-	return gprs_ns_sendmsg(bssgp_nsi, msg);
-}
-
-/* Send a single GMM-PAGING.req to a given NSEI/NS-BVCI */
-int bssgp_tx_paging(uint16_t nsei, uint16_t ns_bvci,
-		     struct bssgp_paging_info *pinfo)
-{
-	struct msgb *msg = bssgp_msgb_alloc();
-	struct bssgp_normal_hdr *bgph =
-			(struct bssgp_normal_hdr *) msgb_put(msg, sizeof(*bgph));
-	uint16_t drx_params = htons(pinfo->drx_params);
-	uint8_t mi[10];
-	int imsi_len = gsm48_generate_mid_from_imsi(mi, pinfo->imsi);
-	uint8_t ra[6];
-
-	if (imsi_len < 2)
-		return -EINVAL;
-
-	msgb_nsei(msg) = nsei;
-	msgb_bvci(msg) = ns_bvci;
-
-	if (pinfo->mode == BSSGP_PAGING_PS)
-		bgph->pdu_type = BSSGP_PDUT_PAGING_PS;
-	else
-		bgph->pdu_type = BSSGP_PDUT_PAGING_CS;
-	/* IMSI */
-	msgb_tvlv_put(msg, BSSGP_IE_IMSI, imsi_len-2, mi+2);
-	/* DRX Parameters */
-	msgb_tvlv_put(msg, BSSGP_IE_DRX_PARAMS, 2,
-			(uint8_t *) &drx_params);
-	/* Scope */
-	switch (pinfo->scope) {
-	case BSSGP_PAGING_BSS_AREA:
-		{
-			uint8_t null = 0;
-			msgb_tvlv_put(msg, BSSGP_IE_BSS_AREA_ID, 1, &null);
-		}
-		break;
-	case BSSGP_PAGING_LOCATION_AREA:
-		gsm48_construct_ra(ra, &pinfo->raid);
-		msgb_tvlv_put(msg, BSSGP_IE_LOCATION_AREA, 4, ra);
-		break;
-	case BSSGP_PAGING_ROUTEING_AREA:
-		gsm48_construct_ra(ra, &pinfo->raid);
-		msgb_tvlv_put(msg, BSSGP_IE_ROUTEING_AREA, 6, ra);
-		break;
-	case BSSGP_PAGING_BVCI:
-		{
-			uint16_t bvci = htons(pinfo->bvci);
-			msgb_tvlv_put(msg, BSSGP_IE_BVCI, 2, (uint8_t *)&bvci);
-		}
-		break;
-	}
-	/* QoS profile mandatory for PS */
-	if (pinfo->mode == BSSGP_PAGING_PS)
-		msgb_tvlv_put(msg, BSSGP_IE_QOS_PROFILE, 3, pinfo->qos);
-
-	/* Optional (P-)TMSI */
-	if (pinfo->ptmsi) {
-		uint32_t ptmsi = htonl(*pinfo->ptmsi);
-		msgb_tvlv_put(msg, BSSGP_IE_TMSI, 4, (uint8_t *) &ptmsi);
-	}
-
-	return gprs_ns_sendmsg(bssgp_nsi, msg);
-}
-
-void bssgp_set_log_ss(int ss)
-{
-	DBSSGP = ss;
-}