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-rw-r--r--include/osmocom/gsm/gsm0808.h5
-rw-r--r--src/gsm/gsm0808.c56
-rw-r--r--src/gsm/libosmogsm.map1
-rw-r--r--tests/gsm0808/gsm0808_test.c50
-rw-r--r--tests/gsm0808/gsm0808_test.ok1
5 files changed, 113 insertions, 0 deletions
diff --git a/include/osmocom/gsm/gsm0808.h b/include/osmocom/gsm/gsm0808.h
index 990fd74d..a9f610a8 100644
--- a/include/osmocom/gsm/gsm0808.h
+++ b/include/osmocom/gsm/gsm0808.h
@@ -42,6 +42,11 @@ struct msgb *gsm0808_create_cipher_reject(uint8_t cause);
struct msgb *gsm0808_create_classmark_update(const uint8_t *cm2, uint8_t cm2_len,
const uint8_t *cm3, uint8_t cm3_len);
struct msgb *gsm0808_create_sapi_reject(uint8_t link_id);
+struct msgb *gsm0808_create_ass(const struct gsm0808_channel_type *ct,
+ const uint16_t *cic,
+ const struct sockaddr_storage *ss,
+ const struct gsm0808_speech_codec_list *scl,
+ const uint32_t *ci);
struct msgb *gsm0808_create_ass_compl(uint8_t rr_cause, uint8_t chosen_channel,
uint8_t encr_alg_id, uint8_t speech_mode,
const struct sockaddr_storage *ss,
diff --git a/src/gsm/gsm0808.c b/src/gsm/gsm0808.c
index 2721a1b1..be58939d 100644
--- a/src/gsm/gsm0808.c
+++ b/src/gsm/gsm0808.c
@@ -238,6 +238,62 @@ struct msgb *gsm0808_create_sapi_reject(uint8_t link_id)
return msg;
}
+struct msgb *gsm0808_create_ass(const struct gsm0808_channel_type *ct,
+ const uint16_t *cic,
+ const struct sockaddr_storage *ss,
+ const struct gsm0808_speech_codec_list *scl,
+ const uint32_t *ci)
+{
+ /* See also: 3GPP TS 48.008 3.2.1.1 ASSIGNMENT REQUEST */
+ struct msgb *msg;
+ uint16_t cic_sw;
+ uint32_t ci_sw;
+
+ /* Mandatory emelent! */
+ OSMO_ASSERT(ct);
+
+ msg =
+ msgb_alloc_headroom(BSSMAP_MSG_SIZE, BSSMAP_MSG_HEADROOM,
+ "bssmap: ass req");
+ if (!msg)
+ return NULL;
+
+ /* Message Type 3.2.2.1 */
+ msgb_v_put(msg, BSS_MAP_MSG_ASSIGMENT_RQST);
+
+ /* Channel Type 3.2.2.11 */
+ gsm0808_enc_channel_type(msg, ct);
+
+ /* Circuit Identity Code 3.2.2.2 */
+ if (cic) {
+ cic_sw = htons(*cic);
+ msgb_tv_fixed_put(msg, GSM0808_IE_CIRCUIT_IDENTITY_CODE,
+ sizeof(cic_sw), (uint8_t *) & cic_sw);
+ }
+
+ /* AoIP: AoIP Transport Layer Address (MGW) 3.2.2.102 */
+ if (ss) {
+ gsm0808_enc_aoip_trasp_addr(msg, ss);
+ }
+
+ /* AoIP: Codec List (MSC Preferred) 3.2.2.103 */
+ if (scl)
+ gsm0808_enc_speech_codec_list(msg, scl);
+
+ /* AoIP: Call Identifier 3.2.2.105 */
+ if (ci) {
+ ci_sw = htonl(*ci);
+ msgb_tv_fixed_put(msg, GSM0808_IE_CALL_ID, sizeof(ci_sw),
+ (uint8_t *) & ci_sw);
+ }
+
+ /* push the bssmap header */
+ msg->l3h =
+ msgb_tv_push(msg, BSSAP_MSG_BSS_MANAGEMENT, msgb_length(msg));
+
+ return msg;
+}
+
struct msgb *gsm0808_create_ass_compl(uint8_t rr_cause, uint8_t chosen_channel,
uint8_t encr_alg_id, uint8_t speech_mode,
const struct sockaddr_storage *ss,
diff --git a/src/gsm/libosmogsm.map b/src/gsm/libosmogsm.map
index ec234189..a4e6083b 100644
--- a/src/gsm/libosmogsm.map
+++ b/src/gsm/libosmogsm.map
@@ -124,6 +124,7 @@ gsm0503_mcs9;
gsm0808_att_tlvdef;
gsm0808_bssap_name;
gsm0808_bssmap_name;
+gsm0808_create_ass;
gsm0808_create_assignment_completed;
gsm0808_create_ass_compl;
gsm0808_create_assignment_failure;
diff --git a/tests/gsm0808/gsm0808_test.c b/tests/gsm0808/gsm0808_test.c
index b0dad7d8..a0ff6d52 100644
--- a/tests/gsm0808/gsm0808_test.c
+++ b/tests/gsm0808/gsm0808_test.c
@@ -262,6 +262,55 @@ static void test_create_sapi_reject()
msgb_free(msg);
}
+static void test_create_ass()
+{
+ static const uint8_t res1[] =
+ { 0x00, 0x0a, 0x01, 0x0b, 0x04, 0x01, 0x0b, 0xa1, 0x25, 0x01, 0x00,
+ 0x04 };
+ static const uint8_t res2[] =
+ { 0x00, 0x20, 0x01, 0x0b, 0x04, 0x01, 0x0b, 0xa1, 0x25, 0x01, 0x00,
+ 0x04, GSM0808_IE_AOIP_TRASP_ADDR, 0x06, 0xc0, 0xa8, 0x64, 0x17,
+ 0x04, 0xd2, GSM0808_IE_SPEECH_CODEC_LIST, 0x07, 0x5f, 0xab, 0xcd,
+ 0xef, 0xa5, 0x9f, 0xf2, GSM0808_IE_CALL_ID, 0xaa, 0xbb, 0xcc,
+ 0xdd };
+
+ struct msgb *msg;
+ struct gsm0808_channel_type ct;
+ uint16_t cic = 0004;
+ struct sockaddr_storage ss;
+ struct sockaddr_in sin;
+ struct gsm0808_speech_codec_list sc_list;
+ uint32_t call_id = 0xAABBCCDD;
+
+ memset(&ct, 0, sizeof(ct));
+ ct.ch_indctr = GSM0808_CHAN_SPEECH;
+ ct.ch_rate_type = GSM0808_SPEECH_HALF_PREF;
+ ct.perm_spch[0] = GSM0808_PERM_FR3;
+ ct.perm_spch[1] = GSM0808_PERM_HR3;
+ ct.perm_spch_len = 2;
+
+ memset(&sin, 0, sizeof(sin));
+ sin.sin_family = AF_INET;
+ sin.sin_port = htons(1234);
+ inet_aton("192.168.100.23", &sin.sin_addr);
+
+ memset(&ss, 0, sizeof(ss));
+ memcpy(&ss, &sin, sizeof(sin));
+
+ setup_codec_list(&sc_list);
+
+ printf("Testing creating Assignment Request\n");
+ msg = gsm0808_create_ass(&ct, &cic, NULL, NULL, NULL);
+ OSMO_ASSERT(msg);
+ VERIFY(msg, res1, ARRAY_SIZE(res1));
+ msgb_free(msg);
+
+ msg = gsm0808_create_ass(&ct, &cic, &ss, &sc_list, &call_id);
+ OSMO_ASSERT(msg);
+ VERIFY(msg, res2, ARRAY_SIZE(res2));
+ msgb_free(msg);
+}
+
static void test_create_ass_compl()
{
static const uint8_t res1[] = {
@@ -786,6 +835,7 @@ int main(int argc, char **argv)
test_create_cipher_reject();
test_create_cm_u();
test_create_sapi_reject();
+ test_create_ass();
test_create_ass_compl();
test_create_ass_compl_aoip();
test_create_ass_fail();
diff --git a/tests/gsm0808/gsm0808_test.ok b/tests/gsm0808/gsm0808_test.ok
index 6170a7ab..52af1342 100644
--- a/tests/gsm0808/gsm0808_test.ok
+++ b/tests/gsm0808/gsm0808_test.ok
@@ -9,6 +9,7 @@ Testing creating Cipher Complete
Testing creating Cipher Reject
Testing creating CM U
Testing creating SAPI Reject
+Testing creating Assignment Request
Testing creating Assignment Complete
Testing creating Assignment Complete (AoIP)
Testing creating Assignment Failure
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-21 21:29:34 +0000