This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/OpenBSC@lists.osmocom.org/.
Holger Freyther holger at freyther.deFrom: Holger Hans Peter Freyther <holger at moiji-mobile.com>
---
openbsc/include/openbsc/signal.h | 21 ++++++++++++++++++++-
openbsc/src/gprs/gprs_gmm.c | 31 ++++++++++++++++++++++++++++++-
openbsc/src/gprs/gprs_sgsn.c | 19 +++++++++++++++++++
openbsc/src/gprs/sgsn_libgtp.c | 11 +++++++++++
4 files changed, 80 insertions(+), 2 deletions(-)
diff --git a/openbsc/include/openbsc/signal.h b/openbsc/include/openbsc/signal.h
index 39319f1..8f27b38 100644
--- a/openbsc/include/openbsc/signal.h
+++ b/openbsc/include/openbsc/signal.h
@@ -1,5 +1,5 @@
/* Generic signalling/notification infrastructure */
-/* (C) 2009-2010 by Holger Hans Peter Freyther <zecke at selfish.org>
+/* (C) 2009-2010, 2015 by Holger Hans Peter Freyther <zecke at selfish.org>
* (C) 2009 by Harald Welte <laforge at 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
diff --git a/openbsc/src/gprs/gprs_gmm.c b/openbsc/src/gprs/gprs_gmm.c
index 2a856a6..8ada3d4 100644
--- a/openbsc/src/gprs/gprs_gmm.c
+++ b/openbsc/src/gprs/gprs_gmm.c
@@ -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");
diff --git a/openbsc/src/gprs/gprs_sgsn.c b/openbsc/src/gprs/gprs_sgsn.c
index 2f5d39e..5fe4e61 100644
--- a/openbsc/src/gprs/gprs_sgsn.c
+++ b/openbsc/src/gprs/gprs_sgsn.c
@@ -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);
diff --git a/openbsc/src/gprs/sgsn_libgtp.c b/openbsc/src/gprs/sgsn_libgtp.c
index eee3ef2..af5c93d 100644
--- a/openbsc/src/gprs/sgsn_libgtp.c
+++ b/openbsc/src/gprs/sgsn_libgtp.c
@@ -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);
--
2.3.5