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-rw-r--r--tests/agch/agch_test.c244
1 files changed, 244 insertions, 0 deletions
diff --git a/tests/agch/agch_test.c b/tests/agch/agch_test.c
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+++ b/tests/agch/agch_test.c
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+/* testing the agch code */
+
+/* (C) 2011 by Holger Hans Peter Freyther
+ * (C) 2014 by sysmocom s.f.m.c. GmbH
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+#include <osmocom/core/talloc.h>
+
+#include <osmo-bts/bts.h>
+#include <osmo-bts/logging.h>
+#include <osmo-bts/gsm_data.h>
+
+#include <unistd.h>
+
+static struct gsm_bts *bts;
+static struct gsm_bts_role_bts *btsb;
+int pcu_direct = 0;
+
+static const uint8_t static_ilv[] = {
+ 0x08, 0x59, 0x51, 0x30, 0x99, 0x00, 0x00, 0x00, 0x19
+};
+
+static int count_imm_ass_rej_refs(struct gsm48_imm_ass_rej *rej)
+{
+ int count = 0;
+ count++;
+
+ if (memcmp(&rej->req_ref1, &rej->req_ref2, sizeof(rej->req_ref2))) {
+ count++;
+ }
+
+ if (memcmp(&rej->req_ref1, &rej->req_ref3, sizeof(rej->req_ref3))
+ && memcmp(&rej->req_ref2, &rej->req_ref3, sizeof(rej->req_ref3))) {
+ count++;
+ }
+
+ if (memcmp(&rej->req_ref1, &rej->req_ref4, sizeof(rej->req_ref4))
+ && memcmp(&rej->req_ref2, &rej->req_ref4, sizeof(rej->req_ref4))
+ && memcmp(&rej->req_ref3, &rej->req_ref4, sizeof(rej->req_ref4))) {
+ count++;
+ }
+
+ return count;
+}
+
+static void put_imm_ass_rej(struct msgb *msg, int idx, uint8_t wait_ind)
+{
+ /* GSM CCCH - Immediate Assignment Reject */
+ static const unsigned char gsm_a_ccch_data[23] = {
+ 0x4d, 0x06, 0x3a, 0x03, 0x25, 0x00, 0x00, 0x0a,
+ 0x25, 0x00, 0x00, 0x0a, 0x25, 0x00, 0x00, 0x0a,
+ 0x25, 0x00, 0x00, 0x0a, 0x2b, 0x2b, 0x2b
+ };
+
+ struct gsm48_imm_ass_rej *rej;
+ msg->l3h = msgb_put(msg, sizeof(gsm_a_ccch_data));
+ rej = (struct gsm48_imm_ass_rej *)msg->l3h;
+ memmove(msg->l3h, gsm_a_ccch_data, sizeof(gsm_a_ccch_data));
+
+ rej->req_ref1.t1 = idx;
+ rej->wait_ind1 = wait_ind;
+
+ rej->req_ref2.t1 = idx;
+ rej->req_ref3.t1 = idx;
+ rej->req_ref4.t1 = idx;
+}
+
+static void put_imm_ass(struct msgb *msg, int idx)
+{
+ /* GSM CCCH - Immediate Assignment */
+ static const unsigned char gsm_a_ccch_data[23] = {
+ 0x2d, 0x06, 0x3f, 0x03, 0x0c, 0xe3, 0x69, 0x25,
+ 0x00, 0x00, 0x00, 0x00, 0x2b, 0x2b, 0x2b, 0x2b,
+ 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b
+ };
+
+ struct gsm48_imm_ass *ima;
+ msg->l3h = msgb_put(msg, sizeof(gsm_a_ccch_data));
+ ima = (struct gsm48_imm_ass *)msg->l3h;
+ memmove(msg->l3h, gsm_a_ccch_data, sizeof(gsm_a_ccch_data));
+
+ ima->req_ref.t1 = idx;
+}
+
+static void test_agch_queue(void)
+{
+ int rc;
+ uint8_t out_buf[GSM_MACBLOCK_LEN];
+ struct gsm_time g_time;
+ const int num_rounds = 40;
+ const int num_ima_per_round = 2;
+ const int num_rej_per_round = 16;
+
+ int round, idx;
+ int count = 0;
+ struct msgb *msg = NULL;
+ int multiframes = 0;
+ int imm_ass_count = 0;
+ int imm_ass_rej_count = 0;
+ int imm_ass_rej_ref_count = 0;
+
+ g_time.fn = 0;
+ g_time.t1 = 0;
+ g_time.t2 = 0;
+ g_time.t3 = 6;
+
+ printf("Testing AGCH messages queue handling.\n");
+ btsb->agch_max_queue_length = 32;
+
+ for (round = 1; round <= num_rounds; round++) {
+ for (idx = 0; idx < num_ima_per_round; idx++) {
+ msg = msgb_alloc(GSM_MACBLOCK_LEN, __FUNCTION__);
+ put_imm_ass(msg, ++count);
+ bts_agch_enqueue(bts, msg);
+ imm_ass_count++;
+ }
+ for (idx = 0; idx < num_rej_per_round; idx++) {
+ msg = msgb_alloc(GSM_MACBLOCK_LEN, __FUNCTION__);
+ put_imm_ass_rej(msg, ++count, 10);
+ bts_agch_enqueue(bts, msg);
+ imm_ass_rej_count++;
+ imm_ass_rej_ref_count++;
+ }
+ }
+
+ printf("AGCH filled: count %u, imm.ass %d, imm.ass.rej %d (refs %d), "
+ "queue limit %u, occupied %d, "
+ "dropped %llu, merged %llu, rejected %llu, "
+ "ag-res %llu, non-res %llu\n",
+ count, imm_ass_count, imm_ass_rej_count, imm_ass_rej_ref_count,
+ btsb->agch_max_queue_length, btsb->agch_queue_length,
+ btsb->agch_queue_dropped_msgs, btsb->agch_queue_merged_msgs,
+ btsb->agch_queue_rejected_msgs, btsb->agch_queue_agch_msgs,
+ btsb->agch_queue_pch_msgs);
+
+ imm_ass_count = 0;
+ imm_ass_rej_count = 0;
+ imm_ass_rej_ref_count = 0;
+
+ for (idx = 0; 1; idx++) {
+ struct gsm48_imm_ass *ima;
+ int is_agch = (idx % 3) == 0; /* 1 AG reserved, 2 PCH */
+ if (is_agch)
+ multiframes++;
+
+ rc = bts_ccch_copy_msg(bts, out_buf, &g_time, is_agch);
+ ima = (struct gsm48_imm_ass *)out_buf;
+ switch (ima->msg_type) {
+ case GSM48_MT_RR_IMM_ASS:
+ imm_ass_count++;
+ break;
+ case GSM48_MT_RR_IMM_ASS_REJ:
+ imm_ass_rej_count++;
+ imm_ass_rej_ref_count +=
+ count_imm_ass_rej_refs((struct gsm48_imm_ass_rej *)ima);
+ break;
+ default:
+ break;
+ }
+ if (is_agch && rc <= 0)
+ break;
+
+ }
+
+ printf("AGCH drained: multiframes %u, imm.ass %d, imm.ass.rej %d (refs %d), "
+ "queue limit %u, occupied %d, "
+ "dropped %llu, merged %llu, rejected %llu, "
+ "ag-res %llu, non-res %llu\n",
+ multiframes, imm_ass_count, imm_ass_rej_count, imm_ass_rej_ref_count,
+ btsb->agch_max_queue_length, btsb->agch_queue_length,
+ btsb->agch_queue_dropped_msgs, btsb->agch_queue_merged_msgs,
+ btsb->agch_queue_rejected_msgs, btsb->agch_queue_agch_msgs,
+ btsb->agch_queue_pch_msgs);
+}
+
+static void test_agch_queue_length_computation(void)
+{
+ static const int ccch_configs[] = {
+ RSL_BCCH_CCCH_CONF_1_NC,
+ RSL_BCCH_CCCH_CONF_1_C,
+ RSL_BCCH_CCCH_CONF_2_NC,
+ RSL_BCCH_CCCH_CONF_3_NC,
+ RSL_BCCH_CCCH_CONF_4_NC,
+ };
+ static const uint8_t tx_integer[] = {
+ 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16, 20, 25, 32, 50,
+ };
+
+ int T_idx, c_idx, max_len;
+
+ printf("Testing AGCH queue length computation.\n");
+
+ printf("T\t\tBCCH slots\n");
+ printf("\t1(NC)\t1(C)\t2(NC)\t3(NC)\t4(NC)\n");
+ for (T_idx = 0; T_idx < ARRAY_SIZE(tx_integer); T_idx++) {
+ printf("%d", tx_integer[T_idx]);
+ for (c_idx = 0; c_idx < ARRAY_SIZE(ccch_configs); c_idx++) {
+ max_len = bts_agch_max_queue_length(tx_integer[T_idx],
+ ccch_configs[c_idx]);
+ printf("\t%d", max_len);
+ }
+ printf("\n");
+ }
+}
+
+int main(int argc, char **argv)
+{
+ void *tall_msgb_ctx;
+
+ tall_bts_ctx = talloc_named_const(NULL, 1, "OsmoBTS context");
+ tall_msgb_ctx = talloc_named_const(tall_bts_ctx, 1, "msgb");
+ msgb_set_talloc_ctx(tall_msgb_ctx);
+
+ bts_log_init(NULL);
+
+ bts = gsm_bts_alloc(tall_bts_ctx);
+ if (bts_init(bts) < 0) {
+ fprintf(stderr, "unable to open bts\n");
+ exit(1);
+ }
+
+ btsb = bts_role_bts(bts);
+ test_agch_queue_length_computation();
+ test_agch_queue();
+ printf("Success\n");
+
+ return 0;
+}
+
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