[nrf fromtree] tests: bluetooth: tester: CSIS: Add more commands

- Add command for setting the set size
- Add command for setting the SIRK
- Allows the following tests to pass:
 - CSIS/SR/CN/BV-01-C
 - CSIS/SR/CN/BV-02-C
 - CSIS/SR/CN/BV-03-C
 - CSIS/SR/CN/BV-04-C

Signed-off-by: Alexander Svensen <alexander.svensen@nordicsemi.no>
(cherry picked from commit 52f2686de67817f3ac5aa9ef16c89a0faf110d0b)

Author: alexsven

tests/bluetooth/tester/overlay-le-audio.conf

@@ -130,6 +130,8 @@ CONFIG_BT_HAS_CLIENT=y
 # CSIS
 CONFIG_BT_CSIP_SET_MEMBER=y
 CONFIG_BT_CSIP_SET_MEMBER_ENC_SIRK_SUPPORT=y
+CONFIG_BT_CSIP_SET_MEMBER_SIRK_NOTIFIABLE=y
+CONFIG_BT_CSIP_SET_MEMBER_SIZE_NOTIFIABLE=y
 
 # CSIP
 CONFIG_BT_CSIP_SET_COORDINATOR=y

tests/bluetooth/tester/src/audio/btp/btp_csis.h

@@ -41,3 +41,14 @@ struct btp_csis_get_member_rsi_rp {
 struct btp_csis_sirk_set_type_cmd {
 	uint8_t type;
 } __packed;
+
+#define BTP_CSIS_SET_SIRK 0x05
+struct btp_csis_set_sirk_cmd {
+	uint8_t sirk[BT_CSIP_SIRK_SIZE];
+} __packed;
+
+#define BTP_CSIS_SET_SET_SIZE 0x06
+struct btp_csis_set_set_size_cmd {
+	uint8_t set_size;
+	uint8_t rank;
+} __packed;

tests/bluetooth/tester/src/audio/btp_csis.c

@@ -90,6 +90,38 @@ static uint8_t csis_set_sirk_type(const void *cmd, uint16_t cmd_len, void *rsp,
 	return BTP_STATUS_SUCCESS;
 }
 
+static uint8_t csis_set_sirk(const void *cmd, uint16_t cmd_len, void *rsp, uint16_t *rsp_len)
+{
+	const struct btp_csis_set_sirk_cmd *cp = cmd;
+	int err = -ENOENT;
+
+	LOG_DBG("Setting new SIRK");
+
+	if (csis_svc_inst != NULL) {
+		err = bt_csip_set_member_sirk(csis_svc_inst, cp->sirk);
+	} else {
+		LOG_DBG("No CSIS instance registered");
+	}
+
+	return BTP_STATUS_VAL(err);
+}
+
+static uint8_t csis_set_set_size(const void *cmd, uint16_t cmd_len, void *rsp, uint16_t *rsp_len)
+{
+	const struct btp_csis_set_set_size_cmd *cp = cmd;
+	int err = -ENOENT;
+
+	LOG_DBG("Setting new set size %u and rank %u", cp->set_size, cp->rank);
+
+	if (csis_svc_inst != NULL) {
+		err = bt_csip_set_member_set_size_and_rank(csis_svc_inst, cp->set_size, cp->rank);
+	} else {
+		LOG_DBG("No CSIS instance registered");
+	}
+
+	return BTP_STATUS_VAL(err);
+}
+
 static const struct btp_handler csis_handlers[] = {
 	{
 		.opcode = BTP_CSIS_READ_SUPPORTED_COMMANDS,
@@ -112,6 +144,16 @@ static const struct btp_handler csis_handlers[] = {
 		.expect_len = sizeof(struct btp_csis_sirk_set_type_cmd),
 		.func = csis_set_sirk_type,
 	},
+	{
+		.opcode = BTP_CSIS_SET_SIRK,
+		.expect_len = sizeof(struct btp_csis_set_sirk_cmd),
+		.func = csis_set_sirk,
+	},
+	{
+		.opcode = BTP_CSIS_SET_SET_SIZE,
+		.expect_len = sizeof(struct btp_csis_set_set_size_cmd),
+		.func = csis_set_set_size,
+	},
 };
 
 static void lock_changed_cb(struct bt_conn *conn, struct bt_csip_set_member_svc_inst *svc_inst,