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osmo-sgsn
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sgsn: Add various signals consumed by CDR or other client code

This commit is contained in:
Holger Hans Peter Freyther 2015-05-02 19:55:38 +02:00
parent 20de3ae17c
commit b100895557
4 changed files with 80 additions and 2 deletions
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21
openbsc/include/openbsc/signal.h
View File

@ -1,5 +1,5 @@
/* Generic signalling/notification infrastructure */
/* (C) 2009-2010 by Holger Hans Peter Freyther <zecke@selfish.org>
/* (C) 2009-2010, 2015 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2009 by Harald Welte <laforge@gnumonks.org>
* (C) 2010 by On-Waves
* All Rights Reserved
@ -46,6 +46,7 @@ enum signal_subsystems {
SS_MSC,
SS_HO,
SS_CCCH,
SS_SGSN,
};
/* SS_PAGING signals */
@ -241,4 +242,22 @@ struct ccch_signal_data {
uint16_t rach_access_count;
};
/* GPRS SGSN signals SS_SGSN */
enum signal_sgsn {
S_SGSN_ATTACH,
S_SGSN_DETACH,
S_SGSN_UPDATE,
S_SGSN_PDP_ACT,
S_SGSN_PDP_DEACT,
S_SGSN_PDP_TERMINATE,
S_SGSN_PDP_FREE,
S_SGSN_MM_FREE,
};
struct sgsn_mm_ctx;
struct sgsn_signal_data {
struct sgsn_mm_ctx *mm;
struct sgsn_pdp_ctx *pdp; /* non-NULL for PDP_ACT, PDP_DEACT, PDP_FREE */
};
#endif

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

@ -52,6 +52,7 @@
#include <openbsc/gprs_gmm.h>
#include <openbsc/gprs_utils.h>
#include <openbsc/sgsn.h>
#include <openbsc/signal.h>
#include <pdp.h>
@ -580,6 +581,10 @@ static void extract_subscr_msisdn(struct sgsn_mm_ctx *ctx)
/* Check if we can already authorize a subscriber */
static int gsm48_gmm_authorize(struct sgsn_mm_ctx *ctx)
{
#ifndef PTMSI_ALLOC
struct sgsn_signal_data sig_data;
#endif
/* Request IMSI and IMEI from the MS if they are unknown */
if (!strlen(ctx->imei)) {
ctx->t3370_id_type = GSM_MI_TYPE_IMEI;
@ -643,6 +648,9 @@ static int gsm48_gmm_authorize(struct sgsn_mm_ctx *ctx)
mmctx_timer_start(ctx, 3350, GSM0408_T3350_SECS);
ctx->t3350_mode = GMM_T3350_MODE_ATT;
#else
memset(&sig_data, 0, sizeof(sig_data));
sig_data.mm = mmctx;
osmo_signal_dispatch(SS_SGSN, S_SGSN_ATTACH, &sig_data);
ctx->mm_state = GMM_REGISTERED_NORMAL;
#endif
@ -976,8 +984,13 @@ static int gsm48_rx_gmm_det_req(struct sgsn_mm_ctx *ctx, struct msgb *msg)
rc = gsm48_tx_gmm_det_ack_oldmsg(msg, 0);
}
if (ctx)
if (ctx) {
struct sgsn_signal_data sig_data;
memset(&sig_data, 0, sizeof(sig_data));
sig_data.mm = ctx;
osmo_signal_dispatch(SS_SGSN, S_SGSN_DETACH, &sig_data);
mm_ctx_cleanup_free(ctx, "GPRS DETACH REQUEST");
}
return rc;
}
@ -1083,6 +1096,9 @@ static void process_ms_ctx_status(struct sgsn_mm_ctx *mmctx,
static int gsm48_rx_gmm_ra_upd_req(struct sgsn_mm_ctx *mmctx, struct msgb *msg,
struct gprs_llc_llme *llme)
{
#ifndef PTMSI_ALLOC
struct sgsn_signal_data sig_data;
#endif
struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_gmmh(msg);
uint8_t *cur = gh->data;
uint8_t ms_ra_acc_cap_len;
@ -1168,6 +1184,10 @@ static int gsm48_rx_gmm_ra_upd_req(struct sgsn_mm_ctx *mmctx, struct msgb *msg,
#else
/* Make sure we are NORMAL (i.e. not SUSPENDED anymore) */
mmctx->mm_state = GMM_REGISTERED_NORMAL;
memset(&sig_data, 0, sizeof(sig_data));
sig_data.mm = mmctx;
osmo_signal_dispatch(SS_SGSN, S_SGSN_UPDATE, &sig_data);
#endif
/* Even if there is no P-TMSI allocated, the MS will switch from
* foreign TLLI to local TLLI */
@ -1217,6 +1237,7 @@ static int gsm48_rx_gmm_status(struct sgsn_mm_ctx *mmctx, struct msgb *msg)
static int gsm0408_rcv_gmm(struct sgsn_mm_ctx *mmctx, struct msgb *msg,
struct gprs_llc_llme *llme)
{
struct sgsn_signal_data sig_data;
struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_gmmh(msg);
int rc;
@ -1298,6 +1319,10 @@ static int gsm0408_rcv_gmm(struct sgsn_mm_ctx *mmctx, struct msgb *msg,
GPRS_ALGO_GEA0, NULL);
mmctx->mm_state = GMM_REGISTERED_NORMAL;
rc = 0;
memset(&sig_data, 0, sizeof(sig_data));
sig_data.mm = mmctx;
osmo_signal_dispatch(SS_SGSN, S_SGSN_ATTACH, &sig_data);
break;
case GSM48_MT_GMM_RA_UPD_COMPL:
/* only in case SGSN offered new P-TMSI */
@ -1312,6 +1337,10 @@ static int gsm0408_rcv_gmm(struct sgsn_mm_ctx *mmctx, struct msgb *msg,
GPRS_ALGO_GEA0, NULL);
mmctx->mm_state = GMM_REGISTERED_NORMAL;
rc = 0;
memset(&sig_data, 0, sizeof(sig_data));
sig_data.mm = mmctx;
osmo_signal_dispatch(SS_SGSN, S_SGSN_UPDATE, &sig_data);
break;
case GSM48_MT_GMM_PTMSI_REALL_COMPL:
LOGMMCTXP(LOGL_INFO, mmctx, "-> PTMSI REALLLICATION COMPLETE\n");

19
openbsc/src/gprs/gprs_sgsn.c
View File

@ -36,6 +36,7 @@
#include <openbsc/gsm_04_08_gprs.h>
#include <openbsc/gprs_gmm.h>
#include <openbsc/gprs_utils.h>
#include <openbsc/signal.h>
#include "openbsc/gprs_llc.h"
#include <time.h>
@ -204,6 +205,7 @@ void sgsn_mm_ctx_cleanup_free(struct sgsn_mm_ctx *mm)
struct gprs_llc_llme *llme = mm->llme;
uint32_t tlli = mm->tlli;
struct sgsn_pdp_ctx *pdp, *pdp2;
struct sgsn_signal_data sig_data;
/* delete all existing PDP contexts for this MS */
llist_for_each_entry_safe(pdp, pdp2, &mm->pdp_list, list) {
@ -217,6 +219,11 @@ void sgsn_mm_ctx_cleanup_free(struct sgsn_mm_ctx *mm)
osmo_timer_del(&mm->timer);
}
memset(&sig_data, 0, sizeof(sig_data));
sig_data.mm = mm;
osmo_signal_dispatch(SS_SGSN, S_SGSN_MM_FREE, &sig_data);
/* Detach from subscriber which is possibly freed then */
if (mm->subscr) {
struct gsm_subscriber *subscr = subscr_get(mm->subscr);
@ -289,6 +296,8 @@ struct sgsn_pdp_ctx *sgsn_pdp_ctx_alloc(struct sgsn_mm_ctx *mm,
*/
void sgsn_pdp_ctx_terminate(struct sgsn_pdp_ctx *pdp)
{
struct sgsn_signal_data sig_data;
OSMO_ASSERT(pdp->mm != NULL);
/* There might still be pending callbacks in libgtp. So the parts of
@ -299,6 +308,10 @@ void sgsn_pdp_ctx_terminate(struct sgsn_pdp_ctx *pdp)
/* Force the deactivation of the SNDCP layer */
sndcp_sm_deactivate_ind(&pdp->mm->llme->lle[pdp->sapi], pdp->nsapi);
memset(&sig_data, 0, sizeof(sig_data));
sig_data.pdp = pdp;
osmo_signal_dispatch(SS_SGSN, S_SGSN_PDP_TERMINATE, &sig_data);
/* Detach from MM context */
llist_del(&pdp->list);
pdp->mm = NULL;
@ -313,6 +326,12 @@ void sgsn_pdp_ctx_terminate(struct sgsn_pdp_ctx *pdp)
*/
void sgsn_pdp_ctx_free(struct sgsn_pdp_ctx *pdp)
{
struct sgsn_signal_data sig_data;
memset(&sig_data, 0, sizeof(sig_data));
sig_data.pdp = pdp;
osmo_signal_dispatch(SS_SGSN, S_SGSN_PDP_FREE, &sig_data);
rate_ctr_group_free(pdp->ctrg);
if (pdp->mm)
llist_del(&pdp->list);

11
openbsc/src/gprs/sgsn_libgtp.c
View File

@ -287,6 +287,7 @@ static const struct cause_map gtp2sm_cause_map[] = {
/* The GGSN has confirmed the creation of a PDP Context */
static int create_pdp_conf(struct pdp_t *pdp, void *cbp, int cause)
{
struct sgsn_signal_data sig_data;
struct sgsn_pdp_ctx *pctx = cbp;
uint8_t reject_cause;
@ -322,6 +323,11 @@ static int create_pdp_conf(struct pdp_t *pdp, void *cbp, int cause)
/* Activate the SNDCP layer */
sndcp_sm_activate_ind(&pctx->mm->llme->lle[pctx->sapi], pctx->nsapi);
/* Inform others about it */
memset(&sig_data, 0, sizeof(sig_data));
sig_data.pdp = pctx;
osmo_signal_dispatch(SS_SGSN, S_SGSN_PDP_ACT, &sig_data);
/* Send PDP CTX ACT to MS */
return gsm48_tx_gsm_act_pdp_acc(pctx);
@ -349,12 +355,17 @@ reject:
/* Confirmation of a PDP Context Delete */
static int delete_pdp_conf(struct pdp_t *pdp, void *cbp, int cause)
{
struct sgsn_signal_data sig_data;
struct sgsn_pdp_ctx *pctx = cbp;
int rc = 0;
LOGPDPCTXP(LOGL_INFO, pctx, "Received DELETE PDP CTX CONF, cause=%d(%s)\n",
cause, get_value_string(gtp_cause_strs, cause));
memset(&sig_data, 0, sizeof(sig_data));
sig_data.pdp = pctx;
osmo_signal_dispatch(SS_SGSN, S_SGSN_PDP_DEACT, &sig_data);
if (pctx->mm) {
/* Deactivate the SNDCP layer */
sndcp_sm_deactivate_ind(&pctx->mm->llme->lle[pctx->sapi], pctx->nsapi);