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[GPRS] SGSN: Pass BSSGP SUSPEND/RESUME up to GMM and alter MMCTX state

This commit is contained in:
Harald Welte 2010-06-09 11:22:47 +02:00 committed by Holger Hans Peter Freyther
parent f54e7e2102
commit 5bfe499366
3 changed files with 68 additions and 4 deletions
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4
openbsc/include/openbsc/gprs_gmm.h
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@ -11,4 +11,8 @@ int gsm48_tx_gsm_deact_pdp_acc(struct sgsn_pdp_ctx *pdp);
int gsm0408_gprs_rcvmsg(struct msgb *msg, struct gprs_llc_llme *llme);
int gprs_gmm_rx_suspend(struct gprs_ra_id *raid, uint32_t tlli);
int gprs_gmm_rx_resume(struct gprs_ra_id *raid, uint32_t tlli,
uint8_t suspend_ref);
#endif /* _GPRS_GMM_H */

20
openbsc/src/gprs/gprs_bssgp.c
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@ -40,6 +40,7 @@
#include <openbsc/gprs_llc.h>
#include <openbsc/gprs_ns.h>
#include <openbsc/gprs_sgsn.h>
#include <openbsc/gprs_gmm.h>
void *bssgp_tall_ctx = NULL;
@ -363,6 +364,7 @@ static int bssgp_rx_suspend(struct msgb *msg, struct tlv_parsed *tp,
(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)) {
@ -378,8 +380,11 @@ static int bssgp_rx_suspend(struct msgb *msg, struct tlv_parsed *tp,
gsm48_parse_ra(&raid, TLVP_VAL(tp, BSSGP_IE_ROUTEING_AREA));
/* FIXME: pass the SUSPEND request to GMM */
/* SEND SUSPEND_ACK or SUSPEND_NACK */
/* Inform GMM about the SUSPEND request */
rc = gprs_gmm_rx_suspend(&raid, tlli);
if (rc < 0)
return bssgp_tx_suspend_nack(msgb_nsei(msg), tlli, NULL);
bssgp_tx_suspend_ack(msgb_nsei(msg), tlli, &raid, 0);
return 0;
@ -392,6 +397,8 @@ static int bssgp_rx_resume(struct msgb *msg, struct tlv_parsed *tp,
(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) ||
@ -402,13 +409,18 @@ static int bssgp_rx_resume(struct msgb *msg, struct tlv_parsed *tp,
}
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 RESUME\n", ctx->bvci, tlli);
gsm48_parse_ra(&raid, TLVP_VAL(tp, BSSGP_IE_ROUTEING_AREA));
/* FIXME: pass the RESUME request to GMM */
/* SEND RESUME_ACK or RESUME_NACK */
/* Inform GMM about the RESUME request */
rc = gprs_gmm_rx_resume(&raid, tlli, suspend_ref);
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;
}

48
openbsc/src/gprs/gprs_gmm.c
View File

@ -1270,3 +1270,51 @@ int gsm0408_gprs_rcvmsg(struct msgb *msg, struct gprs_llc_llme *llme)
return rc;
}
int gprs_gmm_rx_suspend(struct gprs_ra_id *raid, uint32_t tlli)
{
struct sgsn_mm_ctx *mmctx;
mmctx = sgsn_mm_ctx_by_tlli(tlli, raid);
if (!mmctx) {
LOGP(DMM, LOGL_NOTICE, "SUSPEND request for unknown "
"TLLI=%08x\n", tlli);
return -EINVAL;
}
if (mmctx->mm_state != GMM_REGISTERED_NORMAL) {
LOGP(DMM, LOGL_NOTICE, "SUSPEND request while state "
"!= REGISTERED (TLLI=%08x)\n", tlli);
return -EINVAL;
}
/* Transition from REGISTERED_NORMAL to REGISTERED_SUSPENDED */
mmctx->mm_state = GMM_REGISTERED_SUSPENDED;
return 0;
}
int gprs_gmm_rx_resume(struct gprs_ra_id *raid, uint32_t tlli,
uint8_t suspend_ref)
{
struct sgsn_mm_ctx *mmctx;
/* FIXME: make use of suspend reference? */
mmctx = sgsn_mm_ctx_by_tlli(tlli, raid);
if (!mmctx) {
LOGP(DMM, LOGL_NOTICE, "RESUME request for unknown "
"TLLI=%08x\n", tlli);
return -EINVAL;
}
if (mmctx->mm_state != GMM_REGISTERED_SUSPENDED) {
LOGP(DMM, LOGL_NOTICE, "RESUME request while state "
"!= SUSPENDED (TLLI=%08x)\n", tlli);
/* FIXME: should we not simply ignore it? */
return -EINVAL;
}
/* Transition from SUSPENDED to NORMAL */
mmctx->mm_state = GMM_REGISTERED_NORMAL;
return 0;
}