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authorPravin Kumarvel <pmanohar@radisys.com>2016-12-12 17:20:39 +0530
committerPravin Kumarvel <pmanohar@radisys.com>2016-12-12 17:20:39 +0530
commit1611df5226199da2bf2fba3d22d93cc1a6c6c777 (patch)
tree9639b03380f63d70f50f8cbdcf2902999bbce7c9
parentb8e8d0a4023d6916a6b2042f81ef17d32e8675c4 (diff)
Support Deactivate PDP Context Request from network
Enable Deactivate PDP context based on the IMSI of the subscriber. When there are PDP contexts present for a MM context, PDP context will be deactivated along with GMM Detach(MM context deletion). If there are no PDP present, MM context will be deleted to avoid further PDP context request from the MS. Test cases is added to check this functionality. Change-Id: Ia0a41aa2218ec2fda4ea17a37c8cc55cba63dd13
-rw-r--r--openbsc/include/openbsc/gprs_sgsn.h2
-rw-r--r--openbsc/src/gprs/gprs_sgsn.c38
-rw-r--r--openbsc/tests/sgsn/sgsn_test.c136
-rw-r--r--openbsc/tests/sgsn/sgsn_test.ok4
4 files changed, 180 insertions, 0 deletions
diff --git a/openbsc/include/openbsc/gprs_sgsn.h b/openbsc/include/openbsc/gprs_sgsn.h
index 24e286c70..b3f250dc5 100644
--- a/openbsc/include/openbsc/gprs_sgsn.h
+++ b/openbsc/include/openbsc/gprs_sgsn.h
@@ -369,6 +369,8 @@ void sgsn_inst_init(void);
* ottherwise lost state (recovery procedure) */
int drop_all_pdp_for_ggsn(struct sgsn_ggsn_ctx *ggsn);
+void drop_gmm_ctx_for_ms(const char *imsi);
+
char *gprs_pdpaddr2str(uint8_t *pdpa, uint8_t len);
/*
diff --git a/openbsc/src/gprs/gprs_sgsn.c b/openbsc/src/gprs/gprs_sgsn.c
index e5a54d9b4..8558029a1 100644
--- a/openbsc/src/gprs/gprs_sgsn.c
+++ b/openbsc/src/gprs/gprs_sgsn.c
@@ -667,6 +667,44 @@ static void drop_one_pdp(struct sgsn_pdp_ctx *pdp)
}
}
+/*
+ * High-level function to be called for PDP deactivation initiated from SGSN VTY.
+ * When there are PDP contexts present for a MM context, PDP context will be
+ * deactivated along with GMM Detach(MM context deletion).
+ * If there are no PDP present, MM context will be deleted to avoid further
+ * PDP context activation for that MS.
+ */
+void drop_gmm_ctx_for_ms(const char *imsi)
+{
+ OSMO_ASSERT(imsi != NULL);
+ struct sgsn_mm_ctx *mm;
+ struct sgsn_pdp_ctx *pdp;
+
+ /* Search the MM context subscriber */
+ mm = sgsn_mm_ctx_by_imsi(imsi);
+ LOGMMCTXP(LOGL_INFO, mm,
+ "SGSN intiated Deactivate PDP request for %s\n", imsi);
+ if (mm) {
+ /* Search the PDP for this subscriber */
+ if (llist_empty(&mm->pdp_list)) {
+ /*
+ * Deleting mm context for the subscriber when no PDP
+ * context is present.
+ */
+ gsm0408_gprs_access_cancelled(mm, GMM_CAUSE_GPRS_NOTALLOWED);
+ LOGMMCTXP(LOGL_NOTICE, mm, "No PDP context to deactivate\n");
+ } else {
+ llist_for_each_entry(pdp, &mm->pdp_list, list) {
+ gsm48_tx_gsm_deact_pdp_req(pdp, GSM_CAUSE_DEACT_REGULAR);
+ LOGPDPCTXP(LOGL_INFO, pdp, "PDP Deactivation "
+ "Successful\n");
+ }
+ }
+ } else
+ LOGMMCTXP(LOGL_NOTICE, mm,
+ "No MM context to deactivate for %s\n", imsi);
+}
+
/* High-level function to be called in case a GGSN has disappeared or
* otherwise lost state (recovery procedure) */
int drop_all_pdp_for_ggsn(struct sgsn_ggsn_ctx *ggsn)
diff --git a/openbsc/tests/sgsn/sgsn_test.c b/openbsc/tests/sgsn/sgsn_test.c
index e7b74585b..6f01d4417 100644
--- a/openbsc/tests/sgsn/sgsn_test.c
+++ b/openbsc/tests/sgsn/sgsn_test.c
@@ -38,14 +38,17 @@
#include <osmocom/core/rate_ctr.h>
#include <stdio.h>
+#include <gtp.h>
void *tall_bsc_ctx;
+struct gsn_t gsn_ctx;
static struct sgsn_instance sgsn_inst = {
.config_file = "osmo_sgsn.cfg",
.cfg = {
.gtp_statedir = "./",
.auth_policy = SGSN_AUTH_POLICY_CLOSED,
},
+ .gsn = &gsn_ctx,
};
struct sgsn_instance *sgsn = &sgsn_inst;
unsigned sgsn_tx_counter = 0;
@@ -2363,6 +2366,138 @@ static void test_ggsn_selection(void)
cleanup_test();
}
+static void test_pdp_deactivation_with_pdp_ctx(void)
+{
+ struct apn_ctx *actxs[4];
+ struct sgsn_ggsn_ctx *ggc, *ggcs[3];
+ struct gsm_subscriber *s1;
+ const char *imsi1 = "1234567890";
+ struct sgsn_mm_ctx *ctx;
+ struct gprs_ra_id raid = { 0, };
+ uint32_t local_tlli = 0xffeeddcc;
+ enum gsm48_gsm_cause gsm_cause;
+ struct tlv_parsed tp;
+ uint8_t apn_enc[GSM_APN_LENGTH + 10];
+ struct sgsn_subscriber_pdp_data *pdp_data;
+ char apn_str[GSM_APN_LENGTH];
+
+ printf("Testing Pdp deactivation for MS with pdp ctx\n");
+
+ gprs_gsup_client_send_cb = my_gprs_gsup_client_send_dummy;
+
+ /* Check for emptiness */
+ OSMO_ASSERT(gprs_subscr_get_by_imsi(imsi1) == NULL);
+
+ /* Create a context */
+ OSMO_ASSERT(count(gprs_llme_list()) == 0);
+ ctx = alloc_mm_ctx(local_tlli, &raid);
+ strncpy(ctx->imsi, imsi1, sizeof(ctx->imsi) - 1);
+
+ /* Allocate and attach a subscriber */
+ s1 = gprs_subscr_get_or_create_by_mmctx(ctx);
+ assert_subscr(s1, imsi1);
+
+ struct sgsn_pdp_ctx *pdp;
+
+ tp.lv[GSM48_IE_GSM_APN].len = 0;
+ tp.lv[GSM48_IE_GSM_APN].val = apn_enc;
+
+ tp.lv[OSMO_IE_GSM_REQ_PDP_ADDR].len = 2;
+ tp.lv[OSMO_IE_GSM_REQ_PDP_ADDR].val = apn_enc;
+
+ tp.lv[OSMO_IE_GSM_REQ_QOS].len = 14;
+ tp.lv[OSMO_IE_GSM_REQ_QOS].val = apn_enc;
+
+ ggcs[0] = sgsn_ggsn_ctx_find_alloc(0);
+
+ actxs[0] = sgsn_apn_ctx_find_alloc("test.apn", "123456");
+ actxs[0]->ggsn = ggcs[0];
+
+ pdp_data = sgsn_subscriber_pdp_data_alloc(s1->sgsn_data);
+ pdp_data->context_id = 1;
+ pdp_data->pdp_type = 0x0121;
+ strncpy(pdp_data->apn_str, "*", sizeof(pdp_data->apn_str)-1);
+
+ /* Resolve GGSNs */
+ tp.lv[GSM48_IE_GSM_APN].len =
+ gprs_str_to_apn(apn_enc, sizeof(apn_enc), "Test.Apn");
+
+ ggc = sgsn_mm_ctx_find_ggsn_ctx(ctx, &tp, &gsm_cause, apn_str);
+
+ OSMO_ASSERT(ggc != NULL);
+ OSMO_ASSERT(ggc->id == 0);
+
+ ggc = sgsn_ggsn_ctx_alloc(ggc->id);
+ /* Create a pdp context */
+ pdp = sgsn_create_pdp_ctx(ggc, ctx, 5, &tp);
+
+ /* Intiate PDP deactivation for imsi1 */
+ drop_gmm_ctx_for_ms(imsi1);
+ gsm48_tx_gsm_deact_pdp_acc(pdp);
+ gsm0408_gprs_access_cancelled(ctx, GMM_CAUSE_GPRS_NOTALLOWED);
+
+ /* Cleanup */
+
+ subscr_put(s1);
+
+ sgsn_apn_ctx_free(actxs[0]);
+ sgsn_ggsn_ctx_free(ggcs[0]);
+ sgsn_ggsn_ctx_free(ggc);
+ talloc_free(pdp);
+
+ cleanup_test();
+}
+
+static void test_pdp_deactivation_with_only_mm_ctx(void)
+{
+ struct gsm_subscriber *s1;
+ const char *imsi1 = "1234567890";
+ struct sgsn_mm_ctx *ctx;
+ struct gprs_ra_id raid = { 0, };
+ uint32_t local_tlli = 0xffeeddcc;
+
+ printf("Testing Pdp deactivation for MS with only MM ctx\n");
+
+ gprs_gsup_client_send_cb = my_gprs_gsup_client_send_dummy;
+
+ /* Check for emptiness */
+ OSMO_ASSERT(gprs_subscr_get_by_imsi(imsi1) == NULL);
+
+ /* Create a context */
+ OSMO_ASSERT(count(gprs_llme_list()) == 0);
+ ctx = alloc_mm_ctx(local_tlli, &raid);
+ strncpy(ctx->imsi, imsi1, sizeof(ctx->imsi) - 1);
+
+ /* Allocate and attach a subscriber */
+ s1 = gprs_subscr_get_or_create_by_mmctx(ctx);
+ assert_subscr(s1, imsi1);
+
+ /* Intiate PDP deactivation for imsi1 */
+ drop_gmm_ctx_for_ms(imsi1);
+
+ cleanup_test();
+}
+
+static void test_pdp_deactivation_without_mm_ctx(void)
+{
+ const char *imsi1 = "1234567890";
+
+ printf("Testing Pdp deactivation for MS without MM ctx\n");
+
+ /* Intiate PDP deactivation for imsi1 */
+ drop_gmm_ctx_for_ms(imsi1);
+
+ cleanup_test();
+}
+
+static void test_pdp_deactivation(void)
+{
+ printf("Testing pdp deactivation\n");
+
+ test_pdp_deactivation_with_pdp_ctx();
+ test_pdp_deactivation_without_mm_ctx();
+ test_pdp_deactivation_with_only_mm_ctx();
+}
static struct log_info_cat gprs_categories[] = {
[DMM] = {
.name = "DMM",
@@ -2454,6 +2589,7 @@ int main(int argc, char **argv)
test_gmm_routing_areas();
test_apn_matching();
test_ggsn_selection();
+ test_pdp_deactivation();
printf("Done\n");
talloc_report_full(osmo_sgsn_ctx, stderr);
diff --git a/openbsc/tests/sgsn/sgsn_test.ok b/openbsc/tests/sgsn/sgsn_test.ok
index c7a53b9e5..c36b64341 100644
--- a/openbsc/tests/sgsn/sgsn_test.ok
+++ b/openbsc/tests/sgsn/sgsn_test.ok
@@ -34,4 +34,8 @@ Testing routing area changes
- RA Update Request (RA 2 -> RA 2)
Testing APN matching
Testing GGSN selection
+Testing pdp deactivation
+Testing Pdp deactivation for MS with pdp ctx
+Testing Pdp deactivation for MS without MM ctx
+Testing Pdp deactivation for MS with only MM ctx
Done