diff --git a/doc/guides/cryptodevs/scheduler.rst b/doc/guides/cryptodevs/scheduler.rst
index 0482331..ddc02b4 100644
--- a/doc/guides/cryptodevs/scheduler.rst
+++ b/doc/guides/cryptodevs/scheduler.rst
@@ -154,6 +154,13 @@ operation:
    its own, by making use of the available CPU cycles to deal with smaller
    crypto workloads.
 
+   The threshold is set to 128 bytes by default. It can be updated by calling
+   function **rte_cryptodev_scheduler_option_set**. The parameter of
+   **option_type** must be **CDEV_SCHED_OPTION_THRESHOLD** and **option** should
+   point to a rte_cryptodev_scheduler_threshold_option structure filled with
+   appropriate threshold value. Please NOTE this threshold has be a power-of-2
+   unsigned integer.
+
 *   **CDEV_SCHED_MODE_FAILOVER:**
 
    *Initialization mode parameter*: **fail-over**
diff --git a/doc/guides/rel_notes/release_17_05.rst b/doc/guides/rel_notes/release_17_05.rst
index 3a2cb12..73217c5 100644
--- a/doc/guides/rel_notes/release_17_05.rst
+++ b/doc/guides/rel_notes/release_17_05.rst
@@ -231,7 +231,6 @@ New Features
   the scheduler will enqueue the incoming crypto operation burst to the
   primary slave. When one or more crypto operations fail to be enqueued,
   then they will be enqueued to the secondary slave.
-
 * **Updated the QAT PMD.**
 
   The QAT PMD has been updated with additional support for:
@@ -252,6 +251,14 @@ New Features
 
   * DES DOCSIS BPI algorithm.
 
+* **Added mode specific option support to Cryptodev Scheduler PMD.**
+
+  Originally, different modes of the cryptodev scheduler have no way to be
+  individually configured. By introducing this feature,each scheduling mode
+  now can be individually configured by the newly added APIs. E.g., the
+  packet-size based distribution mode now can be configured the threshold
+  values.
+
 Resolved Issues
 ---------------
 
diff --git a/drivers/crypto/scheduler/rte_cryptodev_scheduler.c b/drivers/crypto/scheduler/rte_cryptodev_scheduler.c
index 6018857..6a1ff21 100644
--- a/drivers/crypto/scheduler/rte_cryptodev_scheduler.c
+++ b/drivers/crypto/scheduler/rte_cryptodev_scheduler.c
@@ -466,6 +466,8 @@ rte_cryptodev_scheduler_load_user_scheduler(uint8_t scheduler_id,
 	sched_ctx->ops.scheduler_stop = scheduler->ops->scheduler_stop;
 	sched_ctx->ops.slave_attach = scheduler->ops->slave_attach;
 	sched_ctx->ops.slave_detach = scheduler->ops->slave_detach;
+	sched_ctx->ops.option_set = scheduler->ops->option_set;
+	sched_ctx->ops.option_get = scheduler->ops->option_get;
 
 	if (sched_ctx->private_ctx)
 		rte_free(sched_ctx->private_ctx);
@@ -515,3 +517,64 @@ rte_cryptodev_scheduler_slaves_get(uint8_t scheduler_id, uint8_t *slaves)
 
 	return (int)nb_slaves;
 }
+
+int
+rte_cryptodev_scheduler_option_set(uint8_t scheduler_id,
+		enum rte_cryptodev_schedule_option_type option_type,
+		void *option)
+{
+	struct rte_cryptodev *dev = rte_cryptodev_pmd_get_dev(scheduler_id);
+	struct scheduler_ctx *sched_ctx;
+
+	if (option_type == CDEV_SCHED_OPTION_NOT_SET ||
+			option_type >= CDEV_SCHED_OPTION_COUNT) {
+		CS_LOG_ERR("Invalid option parameter");
+		return -EINVAL;
+	}
+
+	if (!option) {
+		CS_LOG_ERR("Invalid option parameter");
+		return -EINVAL;
+	}
+
+	if (dev->data->dev_started) {
+		CS_LOG_ERR("Illegal operation");
+		return -EBUSY;
+	}
+
+	sched_ctx = dev->data->dev_private;
+
+	RTE_FUNC_PTR_OR_ERR_RET(*sched_ctx->ops.option_set, -ENOTSUP);
+
+	return (*sched_ctx->ops.option_set)(dev, option_type, option);
+}
+
+int
+rte_cryptodev_scheduler_option_get(uint8_t scheduler_id,
+		enum rte_cryptodev_schedule_option_type option_type,
+		void *option)
+{
+	struct rte_cryptodev *dev = rte_cryptodev_pmd_get_dev(scheduler_id);
+	struct scheduler_ctx *sched_ctx;
+
+	if (!dev) {
+		CS_LOG_ERR("Operation not supported");
+		return -ENOTSUP;
+	}
+
+	if (!option) {
+		CS_LOG_ERR("Invalid option parameter");
+		return -EINVAL;
+	}
+
+	if (dev->dev_type != RTE_CRYPTODEV_SCHEDULER_PMD) {
+		CS_LOG_ERR("Operation not supported");
+		return -ENOTSUP;
+	}
+
+	sched_ctx = dev->data->dev_private;
+
+	RTE_FUNC_PTR_OR_ERR_RET(*sched_ctx->ops.option_get, -ENOTSUP);
+
+	return (*sched_ctx->ops.option_get)(dev, option_type, option);
+}
diff --git a/drivers/crypto/scheduler/rte_cryptodev_scheduler.h b/drivers/crypto/scheduler/rte_cryptodev_scheduler.h
index 1da096b..7b01d6f 100644
--- a/drivers/crypto/scheduler/rte_cryptodev_scheduler.h
+++ b/drivers/crypto/scheduler/rte_cryptodev_scheduler.h
@@ -70,6 +70,23 @@ enum rte_cryptodev_scheduler_mode {
 #define RTE_CRYPTODEV_SCHEDULER_NAME_MAX_LEN	(64)
 #define RTE_CRYPTODEV_SCHEDULER_DESC_MAX_LEN	(256)
 
+/**
+ * Crypto scheduler option types
+ */
+enum rte_cryptodev_schedule_option_type {
+	CDEV_SCHED_OPTION_NOT_SET = 0,
+	CDEV_SCHED_OPTION_THRESHOLD,
+
+	CDEV_SCHED_OPTION_COUNT
+};
+
+/**
+ * Threshold option structure
+ */
+struct rte_cryptodev_scheduler_threshold_option {
+	uint32_t threshold;
+};
+
 struct rte_cryptodev_scheduler;
 
 /**
@@ -178,6 +195,44 @@ rte_cryptodev_scheduler_ordering_get(uint8_t scheduler_id);
 int
 rte_cryptodev_scheduler_slaves_get(uint8_t scheduler_id, uint8_t *slaves);
 
+/**
+ * Set the mode specific option
+ *
+ * @param dev_id
+ *   The target scheduler device ID
+ * @param option_type
+ *   The option type enumerate
+ * @param option
+ *   The specific mode's option structure
+ *
+ * @return
+ *  - 0 if successful
+ *  - negative integer if otherwise.
+ */
+int
+rte_cryptodev_scheduler_option_set(uint8_t scheduler_id,
+		enum rte_cryptodev_schedule_option_type option_type,
+		void *option);
+
+/**
+ * Set the mode specific option
+ *
+ * @param dev_id
+ *   The target scheduler device ID
+ * @param option_type
+ *   The option type enumerate
+ * @param option
+ *   If successful, the function will write back the current
+ *
+ * @return
+ *  - 0 if successful
+ *  - negative integer if otherwise.
+ */
+int
+rte_cryptodev_scheduler_option_get(uint8_t scheduler_id,
+		enum rte_cryptodev_schedule_option_type option_type,
+		void *option);
+
 typedef uint16_t (*rte_cryptodev_scheduler_burst_enqueue_t)(void *qp_ctx,
 		struct rte_crypto_op **ops, uint16_t nb_ops);
 
diff --git a/drivers/crypto/scheduler/rte_cryptodev_scheduler_operations.h b/drivers/crypto/scheduler/rte_cryptodev_scheduler_operations.h
index 93cf123..42fe9e6 100644
--- a/drivers/crypto/scheduler/rte_cryptodev_scheduler_operations.h
+++ b/drivers/crypto/scheduler/rte_cryptodev_scheduler_operations.h
@@ -53,6 +53,16 @@ typedef int (*rte_cryptodev_scheduler_config_queue_pair)(
 typedef int (*rte_cryptodev_scheduler_create_private_ctx)(
 		struct rte_cryptodev *dev);
 
+typedef int (*rte_cryptodev_scheduler_config_option_set)(
+		struct rte_cryptodev *dev,
+		uint32_t option_type,
+		void *option);
+
+typedef int (*rte_cryptodev_scheduler_config_option_get)(
+		struct rte_cryptodev *dev,
+		uint32_t option_type,
+		void *option);
+
 struct rte_cryptodev_scheduler_ops {
 	rte_cryptodev_scheduler_slave_attach_t slave_attach;
 	rte_cryptodev_scheduler_slave_attach_t slave_detach;
@@ -63,6 +73,9 @@ struct rte_cryptodev_scheduler_ops {
 	rte_cryptodev_scheduler_config_queue_pair config_queue_pair;
 
 	rte_cryptodev_scheduler_create_private_ctx create_private_ctx;
+
+	rte_cryptodev_scheduler_config_option_set option_set;
+	rte_cryptodev_scheduler_config_option_get option_get;
 };
 
 #ifdef __cplusplus
diff --git a/drivers/crypto/scheduler/rte_pmd_crypto_scheduler_version.map b/drivers/crypto/scheduler/rte_pmd_crypto_scheduler_version.map
index 69cf0c6..e7ca188 100644
--- a/drivers/crypto/scheduler/rte_pmd_crypto_scheduler_version.map
+++ b/drivers/crypto/scheduler/rte_pmd_crypto_scheduler_version.map
@@ -14,6 +14,8 @@ DPDK_17.02 {
 DPDK_17.05 {
 	global:
 
+	rte_cryptodev_scheduler_option_get;
+	rte_cryptodev_scheduler_option_set;
 	rte_cryptodev_scheduler_slaves_get;
 
 } DPDK_17.02;
diff --git a/drivers/crypto/scheduler/scheduler_failover.c b/drivers/crypto/scheduler/scheduler_failover.c
index 6359f04..2471a5f 100644
--- a/drivers/crypto/scheduler/scheduler_failover.c
+++ b/drivers/crypto/scheduler/scheduler_failover.c
@@ -271,6 +271,8 @@ struct rte_cryptodev_scheduler_ops scheduler_fo_ops = {
 	scheduler_stop,
 	scheduler_config_qp,
 	scheduler_create_private_ctx,
+	NULL,	/* option_set */
+	NULL	/*option_get */
 };
 
 struct rte_cryptodev_scheduler fo_scheduler = {
diff --git a/drivers/crypto/scheduler/scheduler_pkt_size_distr.c b/drivers/crypto/scheduler/scheduler_pkt_size_distr.c
index 1066451..94196d9 100644
--- a/drivers/crypto/scheduler/scheduler_pkt_size_distr.c
+++ b/drivers/crypto/scheduler/scheduler_pkt_size_distr.c
@@ -399,6 +399,51 @@ scheduler_create_private_ctx(struct rte_cryptodev *dev)
 
 	return 0;
 }
+static int
+scheduler_option_set(struct rte_cryptodev *dev, uint32_t option_type,
+		void *option)
+{
+	struct psd_scheduler_ctx *psd_ctx = ((struct scheduler_ctx *)
+			dev->data->dev_private)->private_ctx;
+	uint32_t threshold;
+
+	if ((enum rte_cryptodev_schedule_option_type)option_type !=
+			CDEV_SCHED_OPTION_THRESHOLD) {
+		CS_LOG_ERR("Option not supported");
+		return -EINVAL;
+	}
+
+	threshold = ((struct rte_cryptodev_scheduler_threshold_option *)
+			option)->threshold;
+	if (!rte_is_power_of_2(threshold)) {
+		CS_LOG_ERR("Threshold is not power of 2");
+		return -EINVAL;
+	}
+
+	psd_ctx->threshold = ~(threshold - 1);
+
+	return 0;
+}
+
+static int
+scheduler_option_get(struct rte_cryptodev *dev, uint32_t option_type,
+		void *option)
+{
+	struct psd_scheduler_ctx *psd_ctx = ((struct scheduler_ctx *)
+			dev->data->dev_private)->private_ctx;
+	struct rte_cryptodev_scheduler_threshold_option *threshold_option;
+
+	if ((enum rte_cryptodev_schedule_option_type)option_type !=
+			CDEV_SCHED_OPTION_THRESHOLD) {
+		CS_LOG_ERR("Option not supported");
+		return -EINVAL;
+	}
+
+	threshold_option = option;
+	threshold_option->threshold = (~psd_ctx->threshold) + 1;
+
+	return 0;
+}
 
 struct rte_cryptodev_scheduler_ops scheduler_ps_ops = {
 	slave_attach,
@@ -407,6 +452,8 @@ struct rte_cryptodev_scheduler_ops scheduler_ps_ops = {
 	scheduler_stop,
 	scheduler_config_qp,
 	scheduler_create_private_ctx,
+	scheduler_option_set,
+	scheduler_option_get
 };
 
 struct rte_cryptodev_scheduler psd_scheduler = {
diff --git a/drivers/crypto/scheduler/scheduler_roundrobin.c b/drivers/crypto/scheduler/scheduler_roundrobin.c
index 1fb6ce7..f618d6c 100644
--- a/drivers/crypto/scheduler/scheduler_roundrobin.c
+++ b/drivers/crypto/scheduler/scheduler_roundrobin.c
@@ -265,7 +265,9 @@ struct rte_cryptodev_scheduler_ops scheduler_rr_ops = {
 	scheduler_start,
 	scheduler_stop,
 	scheduler_config_qp,
-	scheduler_create_private_ctx
+	scheduler_create_private_ctx,
+	NULL,	/* option_set */
+	NULL	/*option_get */
 };
 
 struct rte_cryptodev_scheduler scheduler = {
