[PATCH 2/2] app/crypto-perf: test queue pair priority

[Akhil Goyal <gakhil@marvell.com>]

Updated the application to test variable queue pair priority.
A mask `--low-prio-qp-mask mask` can be set to lower the priority
of queues which are set in the mask.
This would result in lower performance for those queues.
By default the priority is set as highest.
This option is added just to verify the performance drop
of queues which have lower priority set.

Signed-off-by: Akhil Goyal <gakhil@marvell.com>
Change-Id: I88c3877f86e92a18bdb49c4421957b1c85dd10c8
---
 app/test-crypto-perf/cperf_options.h         |  3 +++
 app/test-crypto-perf/cperf_options_parsing.c | 20 ++++++++++++++++++++
 app/test-crypto-perf/main.c                  |  6 +++++-
 doc/guides/tools/cryptoperf.rst              |  5 +++++
 4 files changed, 33 insertions(+), 1 deletion(-)

diff --git a/app/test-crypto-perf/cperf_options.h b/app/test-crypto-perf/cperf_options.h
index 131ecfdffb..48f409c3ba 100644
--- a/app/test-crypto-perf/cperf_options.h
+++ b/app/test-crypto-perf/cperf_options.h
@@ -32,6 +32,8 @@
 #define CPERF_TEST_FILE		("test-file")
 #define CPERF_TEST_NAME		("test-name")
 
+#define CPERF_LOW_PRIO_QP_MASK	("low-prio-qp-mask")
+
 #define CPERF_CIPHER_ALGO	("cipher-algo")
 #define CPERF_CIPHER_OP		("cipher-op")
 #define CPERF_CIPHER_KEY_SZ	("cipher-key-sz")
@@ -107,6 +109,7 @@ struct cperf_options {
 	uint32_t *imix_buffer_sizes;
 	uint32_t nb_descriptors;
 	uint16_t nb_qps;
+	uint64_t low_prio_qp_mask;
 
 	uint32_t sessionless:1;
 	uint32_t shared_session:1;
diff --git a/app/test-crypto-perf/cperf_options_parsing.c b/app/test-crypto-perf/cperf_options_parsing.c
index c91fcf0479..8c15cd813f 100644
--- a/app/test-crypto-perf/cperf_options_parsing.c
+++ b/app/test-crypto-perf/cperf_options_parsing.c
@@ -37,6 +37,7 @@ usage(char *progname)
 		" --segment-sz N: set the size of the segment to use\n"
 		" --desc-nb N: set number of descriptors for each crypto device\n"
 		" --devtype TYPE: set crypto device type to use\n"
+		" --low-prio-qp-mask mask: set low priority for queues set in mask(hex)\n"
 		" --optype cipher-only / auth-only / cipher-then-auth / auth-then-cipher /\n"
 		"        aead / pdcp / docsis / ipsec / modex / secp256r1 / sm2 / tls-record : set operation type\n"
 		" --sessionless: enable session-less crypto operations\n"
@@ -941,6 +942,22 @@ parse_pmd_cyclecount_delay_ms(struct cperf_options *opts,
 	return 0;
 }
 
+static int
+parse_low_prio_qp_mask(struct cperf_options *opts, const char *arg)
+{
+	char *end = NULL;
+	unsigned long n;
+
+	/* parse hexadecimal string */
+	n = strtoul(arg, &end, 16);
+	if ((optarg[0] == '\0') || (end == NULL) || (*end != '\0'))
+		return -1;
+
+	opts->low_prio_qp_mask = n;
+
+	return 0;
+}
+
 typedef int (*option_parser_t)(struct cperf_options *opts,
 		const char *arg);
 
@@ -962,6 +979,8 @@ static struct option lgopts[] = {
 	{ CPERF_SEGMENT_SIZE, required_argument, 0, 0 },
 	{ CPERF_DESC_NB, required_argument, 0, 0 },
 
+	{ CPERF_LOW_PRIO_QP_MASK, required_argument, 0, 0 },
+
 	{ CPERF_IMIX, required_argument, 0, 0 },
 	{ CPERF_DEVTYPE, required_argument, 0, 0 },
 	{ CPERF_OPTYPE, required_argument, 0, 0 },
@@ -1097,6 +1116,7 @@ cperf_opts_parse_long(int opt_idx, struct cperf_options *opts)
 		{ CPERF_BUFFER_SIZE,	parse_buffer_sz },
 		{ CPERF_SEGMENT_SIZE,	parse_segment_sz },
 		{ CPERF_DESC_NB,	parse_desc_nb },
+		{ CPERF_LOW_PRIO_QP_MASK,	parse_low_prio_qp_mask },
 		{ CPERF_DEVTYPE,	parse_device_type },
 		{ CPERF_OPTYPE,		parse_op_type },
 		{ CPERF_SESSIONLESS,	parse_sessionless },
diff --git a/app/test-crypto-perf/main.c b/app/test-crypto-perf/main.c
index 75810dbf0b..eac87091a1 100644
--- a/app/test-crypto-perf/main.c
+++ b/app/test-crypto-perf/main.c
@@ -249,7 +249,8 @@ cperf_initialize_cryptodev(struct cperf_options *opts, uint8_t *enabled_cdevs)
 		}
 
 		struct rte_cryptodev_qp_conf qp_conf = {
-			.nb_descriptors = opts->nb_descriptors
+			.nb_descriptors = opts->nb_descriptors,
+			.priority = RTE_CRYPTODEV_QP_PRIORITY_HIGHEST
 		};
 
 		/**
@@ -315,6 +316,9 @@ cperf_initialize_cryptodev(struct cperf_options *opts, uint8_t *enabled_cdevs)
 		}
 
 		for (j = 0; j < opts->nb_qps; j++) {
+			if ((1 << j) & opts->low_prio_qp_mask)
+				qp_conf.priority = RTE_CRYPTODEV_QP_PRIORITY_LOWEST;
+
 			ret = rte_cryptodev_queue_pair_setup(cdev_id, j,
 				&qp_conf, socket_id);
 			if (ret < 0) {
diff --git a/doc/guides/tools/cryptoperf.rst b/doc/guides/tools/cryptoperf.rst
index 0510a3bb89..3a16b3a4a6 100644
--- a/doc/guides/tools/cryptoperf.rst
+++ b/doc/guides/tools/cryptoperf.rst
@@ -361,6 +361,11 @@ The following are the application command-line options:
 
         Set TLS/DTLS protocol version for perf test (default is TLS1.2).
 
+* ``--low-prio-qp-mask <mask>``
+
+        Set low priority for queue pairs set in the hexadecimal mask.
+        This is an optional parameter, if not set all queue pairs will be on same high priority.
+
 Test Vector File
 ~~~~~~~~~~~~~~~~
 
-- 
2.25.1