[dpdk-dev] [PATCH v2 2/2] crypto/scheduler: add packet-size-distr mode param parse

[Fan Zhang <roy.fan.zhang@intel.com>]

This patch adds packet-size-distr mode specific parameter parser
to support different threshold packet size value other than default
128 bytes.

Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com>
---
 doc/guides/cryptodevs/scheduler.rst                |  7 ++-
 drivers/crypto/scheduler/rte_cryptodev_scheduler.h |  1 +
 drivers/crypto/scheduler/scheduler_pmd.c           | 53 ++++++++++++++++++++++
 3 files changed, 60 insertions(+), 1 deletion(-)

diff --git a/doc/guides/cryptodevs/scheduler.rst b/doc/guides/cryptodevs/scheduler.rst
index 4d7f5b152..a754a27e6 100644
--- a/doc/guides/cryptodevs/scheduler.rst
+++ b/doc/guides/cryptodevs/scheduler.rst
@@ -137,7 +137,12 @@ operation:
    **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.
+   unsigned integer. It is possible to use **mode_param** initialization
+   parameter to achieve the same purpose. For example:
+
+   ... --vdev "crypto_scheduler,mode=packet-size-distr,mode_param=threshold:512" ...
+
+   The above parameter will overwrite the threshold value to 512.
 
 *   **CDEV_SCHED_MODE_FAILOVER:**
 
diff --git a/drivers/crypto/scheduler/rte_cryptodev_scheduler.h b/drivers/crypto/scheduler/rte_cryptodev_scheduler.h
index 1c164da7c..3faea4099 100644
--- a/drivers/crypto/scheduler/rte_cryptodev_scheduler.h
+++ b/drivers/crypto/scheduler/rte_cryptodev_scheduler.h
@@ -76,6 +76,7 @@ enum rte_cryptodev_schedule_option_type {
 /**
  * Threshold option structure
  */
+#define RTE_CRYPTODEV_SCHEDULER_PARAM_THRES	"threshold"
 struct rte_cryptodev_scheduler_threshold_option {
 	uint32_t threshold;	/**< Threshold for packet-size mode */
 };
diff --git a/drivers/crypto/scheduler/scheduler_pmd.c b/drivers/crypto/scheduler/scheduler_pmd.c
index ac9185e65..a9221a946 100644
--- a/drivers/crypto/scheduler/scheduler_pmd.c
+++ b/drivers/crypto/scheduler/scheduler_pmd.c
@@ -71,6 +71,8 @@ const struct scheduler_parse_map scheduler_ordering_map[] = {
 		{"disable", 0}
 };
 
+#define CDEV_SCHED_MODE_PARAM_SEP_CHAR		':'
+
 static int
 cryptodev_scheduler_create(const char *name,
 		struct rte_vdev_device *vdev,
@@ -110,6 +112,15 @@ cryptodev_scheduler_create(const char *name,
 
 	if (init_params->mode > CDEV_SCHED_MODE_USERDEFINED &&
 			init_params->mode < CDEV_SCHED_MODE_COUNT) {
+		union {
+			struct rte_cryptodev_scheduler_threshold_option
+					threshold_option;
+		} option;
+		enum rte_cryptodev_schedule_option_type option_type;
+		char param_name[RTE_CRYPTODEV_SCHEDULER_NAME_MAX_LEN] = {0};
+		char param_val[RTE_CRYPTODEV_SCHEDULER_NAME_MAX_LEN] = {0};
+		char *s, *end;
+
 		ret = rte_cryptodev_scheduler_mode_set(dev->data->dev_id,
 			init_params->mode);
 		if (ret < 0) {
@@ -125,6 +136,48 @@ cryptodev_scheduler_create(const char *name,
 					scheduler_mode_map[i].name);
 			break;
 		}
+
+		if (strlen(init_params->mode_param_str) > 0) {
+			s = strchr(init_params->mode_param_str,
+					CDEV_SCHED_MODE_PARAM_SEP_CHAR);
+			if (s == NULL) {
+				CR_SCHED_LOG(ERR, "Invalid mode param");
+				return -EINVAL;
+			}
+
+			strlcpy(param_name, init_params->mode_param_str,
+					s - init_params->mode_param_str + 1);
+			s++;
+			strlcpy(param_val, s,
+					RTE_CRYPTODEV_SCHEDULER_NAME_MAX_LEN);
+
+			switch (init_params->mode) {
+			case CDEV_SCHED_MODE_PKT_SIZE_DISTR:
+				if (strcmp(param_name,
+					RTE_CRYPTODEV_SCHEDULER_PARAM_THRES)
+						!= 0) {
+					CR_SCHED_LOG(ERR, "Invalid mode param");
+					return -EINVAL;
+				}
+				option_type = CDEV_SCHED_OPTION_THRESHOLD;
+
+				option.threshold_option.threshold =
+						strtoul(param_val, &end, 0);
+				break;
+			default:
+				CR_SCHED_LOG(ERR, "Invalid mode param");
+				return -EINVAL;
+			}
+
+			if (sched_ctx->ops.option_set(dev, option_type,
+					(void *)&option) < 0) {
+				CR_SCHED_LOG(ERR, "Invalid mode param");
+				return -EINVAL;
+			}
+
+			RTE_LOG(INFO, PMD, "  Sched mode param (%s = %s)\n",
+					param_name, param_val);
+		}
 	}
 
 	sched_ctx->reordering_enabled = init_params->enable_ordering;
-- 
2.13.6