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[GPRS] BSSGP: expose more internal structures / API

This commit is contained in:
Harald Welte 2010-05-17 23:02:42 +02:00
parent 8a521136a4
commit a78b9c270b
2 changed files with 33 additions and 27 deletions
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29
openbsc/include/openbsc/gprs_bssgp.h
View File

@ -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 */

31
openbsc/src/gprs/gprs_bssgp.c
View File

@ -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;
}