codec_pref: check bts codec support

The vty option bts->codec-support allows the user to set the supported
codecs per BTS level. However, those values are currently only used to
make the handover decision but the logic that handles the BSSMAP
ASSIGNMENT REQUEST does not check those flags.

- Do not ignore bts->codec-support flags on BSSMAP ASSIGNMENT REQUEST

Change-Id: I285234e9c81de74d9fb9907fca2c443b08537435
Closes: OS#3361
diff --git a/tests/codec_pref/codec_pref_test.c b/tests/codec_pref/codec_pref_test.c
index 73547ad..385854f 100644
--- a/tests/codec_pref/codec_pref_test.c
+++ b/tests/codec_pref/codec_pref_test.c
@@ -270,9 +270,62 @@
 	}
 }
 
+/* Generate a realitically looking bts codec configuration */
+static void make_bts_config(struct gsm_bts *bts, uint8_t config_no)
+{
+	/* Note: FR is supported by all BTSs, so there is no flag for it */
+
+	OSMO_ASSERT(config_no < N_CONFIG_VARIANTS);
+
+	bts->codec.hr = 0;
+	bts->codec.efr = 0;
+	bts->codec.amr = 0;
+
+	switch (config_no) {
+	case 0:
+		/* FR1 (implicit) only */
+		break;
+	case 1:
+		/* HR1 only (+FR implicit) */
+		bts->codec.hr = 1;
+		break;
+	case 2:
+		/* FR2 only (+FR implicit)  */
+		bts->codec.efr = 1;
+		break;
+	case 3:
+		/* FR3 only (+FR implicit) */
+		bts->codec.amr = 1;
+		break;
+	case 4:
+		/* HR3 only (+FR implicit) */
+		bts->codec.amr = 1;
+		break;
+	case 5:
+		/* FR1 (implicit) and HR1 */
+		bts->codec.hr = 1;
+		break;
+	case 6:
+		/* FR1 (implicit), FR2 and HR1 */
+		bts->codec.efr = 1;
+		bts->codec.hr = 1;
+		break;
+	case 7:
+		/* FR1 (implicit), FR3 and HR3 */
+		bts->codec.amr = 1;
+		break;
+	case 8:
+		/* FR1 (implicit), FR2, FR3, HR1 and HR3 */
+		bts->codec.hr = 1;
+		bts->codec.efr = 1;
+		bts->codec.amr = 1;
+		break;
+	}
+}
+
 /* Try execute match_codec_pref(), display input and output parameters */
-static int test_match_codec_pref(const struct gsm0808_channel_type *ct,
-				 const struct gsm0808_speech_codec_list *scl, const struct bsc_msc_data *msc)
+static int test_match_codec_pref(const struct gsm0808_channel_type *ct, const struct gsm0808_speech_codec_list *scl,
+				 const struct bsc_msc_data *msc, struct gsm_bts *bts)
 {
 	int rc;
 	unsigned int i;
@@ -296,7 +349,13 @@
 		else
 			printf("   audio_support[%u]=FR%u\n", i, msc->audio_support[i]->ver);
 
-	rc = match_codec_pref(&full_rate, &chan_mode, ct, scl, msc);
+	printf(" * BTS: audio support settings:\n");
+	printf("   (GSM-FR implicitly supported)\n");
+	printf("   codec->hr=%u\n", bts->codec.hr);
+	printf("   codec->efr=%u\n", bts->codec.efr);
+	printf("   codec->amr=%u\n", bts->codec.amr);
+
+	rc = match_codec_pref(&full_rate, &chan_mode, ct, scl, msc, bts);
 	printf(" * result: rc=%i, full_rate=%i, chan_mode=%s\n", rc, full_rate, gsm48_chan_mode_name(chan_mode));
 
 	printf("\n");
@@ -311,6 +370,7 @@
 	struct gsm0808_channel_type ct_msc;
 	struct gsm0808_speech_codec_list scl_ms;
 	struct bsc_msc_data msc_local;
+	struct gsm_bts bts_local;
 	int rc;
 
 	printf("============== test_one_to_one ==============\n\n");
@@ -321,7 +381,8 @@
 		make_msc_config(&msc_local, i);
 		make_scl_config(&scl_ms, i);
 		make_ct_config(&ct_msc, i);
-		rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local);
+		make_bts_config(&bts_local, i);
+		rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
 		OSMO_ASSERT(rc == 0);
 	}
 
@@ -335,6 +396,7 @@
 	struct gsm0808_channel_type ct_msc;
 	struct gsm0808_speech_codec_list scl_ms;
 	struct bsc_msc_data msc_local;
+	struct gsm_bts bts_local;
 	int rc;
 
 	printf("============== test_ms ==============\n\n");
@@ -343,9 +405,10 @@
 
 	make_msc_config(&msc_local, 8);
 	make_ct_config(&ct_msc, 8);
+	make_bts_config(&bts_local, 8);
 	for (i = 0; i < N_CONFIG_VARIANTS; i++) {
 		make_scl_config(&scl_ms, i);
-		rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local);
+		rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
 		OSMO_ASSERT(rc == 0);
 	}
 
@@ -359,6 +422,7 @@
 	struct gsm0808_channel_type ct_msc;
 	struct gsm0808_speech_codec_list scl_ms;
 	struct bsc_msc_data msc_local;
+	struct gsm_bts bts_local;
 	int rc;
 
 	printf("============== test_ct ==============\n\n");
@@ -367,9 +431,10 @@
 
 	make_msc_config(&msc_local, 8);
 	make_scl_config(&scl_ms, 8);
+	make_bts_config(&bts_local, 8);
 	for (i = 0; i < N_CONFIG_VARIANTS; i++) {
 		make_ct_config(&ct_msc, i);
-		rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local);
+		rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
 		OSMO_ASSERT(rc == 0);
 	}
 
@@ -383,6 +448,7 @@
 	struct gsm0808_channel_type ct_msc;
 	struct gsm0808_speech_codec_list scl_ms;
 	struct bsc_msc_data msc_local;
+	struct gsm_bts bts_local;
 	int rc;
 
 	printf("============== test_msc ==============\n\n");
@@ -391,9 +457,10 @@
 
 	make_ct_config(&ct_msc, 8);
 	make_scl_config(&scl_ms, 8);
+	make_bts_config(&bts_local, 8);
 	for (i = 0; i < N_CONFIG_VARIANTS; i++) {
 		make_msc_config(&msc_local, 8);
-		rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local);
+		rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
 		OSMO_ASSERT(rc == 0);
 	}
 
@@ -406,6 +473,7 @@
 	struct gsm0808_channel_type ct_msc;
 	struct gsm0808_speech_codec_list scl_ms;
 	struct bsc_msc_data msc_local;
+	struct gsm_bts bts_local;
 	int rc;
 
 	printf("============== test_selected_working ==============\n\n");
@@ -415,19 +483,43 @@
 	make_scl_config(&scl_ms, 6);
 	make_ct_config(&ct_msc, 5);
 	make_msc_config(&msc_local, 7);
-	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local);
+	make_bts_config(&bts_local, 8);
+	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
 	OSMO_ASSERT(rc == 0);
 
 	make_scl_config(&scl_ms, 0);
 	make_ct_config(&ct_msc, 5);
 	make_msc_config(&msc_local, 7);
-	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local);
+	make_bts_config(&bts_local, 8);
+	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
 	OSMO_ASSERT(rc == 0);
 
 	make_scl_config(&scl_ms, 1);
 	make_ct_config(&ct_msc, 5);
 	make_msc_config(&msc_local, 6);
-	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local);
+	make_bts_config(&bts_local, 8);
+	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
+	OSMO_ASSERT(rc == 0);
+
+	make_scl_config(&scl_ms, 6);
+	make_ct_config(&ct_msc, 5);
+	make_msc_config(&msc_local, 7);
+	make_bts_config(&bts_local, 4);
+	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
+	OSMO_ASSERT(rc == 0);
+
+	make_scl_config(&scl_ms, 0);
+	make_ct_config(&ct_msc, 5);
+	make_msc_config(&msc_local, 7);
+	make_bts_config(&bts_local, 2);
+	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
+	OSMO_ASSERT(rc == 0);
+
+	make_scl_config(&scl_ms, 1);
+	make_ct_config(&ct_msc, 5);
+	make_msc_config(&msc_local, 6);
+	make_bts_config(&bts_local, 1);
+	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
 	OSMO_ASSERT(rc == 0);
 
 	free_msc_config(&msc_local);
@@ -439,6 +531,7 @@
 	struct gsm0808_channel_type ct_msc;
 	struct gsm0808_speech_codec_list scl_ms;
 	struct bsc_msc_data msc_local;
+	struct gsm_bts bts_local;
 	int rc;
 
 	printf("============== test_selected_non_working ==============\n\n");
@@ -448,19 +541,43 @@
 	make_scl_config(&scl_ms, 1);
 	make_ct_config(&ct_msc, 5);
 	make_msc_config(&msc_local, 7);
-	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local);
+	make_bts_config(&bts_local, 8);
+	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
 	OSMO_ASSERT(rc == -1);
 
 	make_scl_config(&scl_ms, 1);
 	make_ct_config(&ct_msc, 5);
 	make_msc_config(&msc_local, 7);
-	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local);
+	make_bts_config(&bts_local, 8);
+	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
 	OSMO_ASSERT(rc == -1);
 
 	make_scl_config(&scl_ms, 1);
 	make_ct_config(&ct_msc, 4);
 	make_msc_config(&msc_local, 6);
-	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local);
+	make_bts_config(&bts_local, 8);
+	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
+	OSMO_ASSERT(rc == -1);
+
+	make_scl_config(&scl_ms, 1);
+	make_ct_config(&ct_msc, 2);
+	make_msc_config(&msc_local, 7);
+	make_bts_config(&bts_local, 8);
+	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
+	OSMO_ASSERT(rc == -1);
+
+	make_scl_config(&scl_ms, 1);
+	make_ct_config(&ct_msc, 5);
+	make_msc_config(&msc_local, 4);
+	make_bts_config(&bts_local, 8);
+	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
+	OSMO_ASSERT(rc == -1);
+
+	make_scl_config(&scl_ms, 8);
+	make_ct_config(&ct_msc, 4);
+	make_msc_config(&msc_local, 6);
+	make_bts_config(&bts_local, 7);
+	rc = test_match_codec_pref(&ct_msc, &scl_ms, &msc_local, &bts_local);
 	OSMO_ASSERT(rc == -1);
 
 	free_msc_config(&msc_local);