[dpdk-dev] [PATCH] [RFC, v2]: adds support PPS(packet per second) on meter

[Li Zhang <lizh@nvidia.com>]

Currently the flow Meter algorithms in rte_flow
only supports bytes per second(BPS).
Such as Single Rate Three Color Marker (srTCM rfc2697)
This RFC adds the packet per second definition in
Meter algorithms structure,
to support the rte_mtr APIs with type srTCM pps mode.
The below structure will be extended:
rte_mtr_algorithm
rte_mtr_meter_profile
Signed-off-by: Li Zhang <lizh@nvidia.com>
---
 lib/librte_ethdev/rte_mtr.h | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/lib/librte_ethdev/rte_mtr.h b/lib/librte_ethdev/rte_mtr.h
index 916a09c5c3..3e88904faf 100644
--- a/lib/librte_ethdev/rte_mtr.h
+++ b/lib/librte_ethdev/rte_mtr.h
@@ -119,6 +119,9 @@ enum rte_mtr_algorithm {
 
 	/** Two Rate Three Color Marker (trTCM) - IETF RFC 4115. */
 	RTE_MTR_TRTCM_RFC4115,
+
+	/** Single Rate Three Color Marker (srTCM) in Packet per second mode */
+	RTE_MTR_SRTCM_PPS,
 };
 
 /**
@@ -171,6 +174,18 @@ struct rte_mtr_meter_profile {
 			/** Excess Burst Size (EBS) (bytes). */
 			uint64_t ebs;
 		} trtcm_rfc4115;
+
+		/** Items only valid when *alg* is set to srTCM - PPS. */
+		struct {
+			/** Committed Information Rate (CIR)(packets/second). */
+			uint64_t cir;
+
+			/** Committed Burst Size (CBS) (bytes). */
+			uint64_t cbs;
+
+			/** Excess Burst Size (EBS) (bytes). */
+			uint64_t ebs;
+		} srtcm_pps;
 	};
 };
 
@@ -317,6 +332,13 @@ struct rte_mtr_capabilities {
 	 */
 	uint32_t meter_trtcm_rfc4115_n_max;
 
+	/** Maximum number of MTR objects that can have their meter configured
+	 * to run the srTCM packet per second algorithm. The value of 0
+	 * indicates this metering algorithm is not supported.
+	 * The maximum value is *n_max*.
+	 */
+	uint32_t meter_srtcm_pps_n_max;
+
 	/** Maximum traffic rate that can be metered by a single MTR object. For
 	 * srTCM RFC 2697, this is the maximum CIR rate. For trTCM RFC 2698,
 	 * this is the maximum PIR rate. For trTCM RFC 4115, this is the maximum
@@ -342,6 +364,12 @@ struct rte_mtr_capabilities {
 	 */
 	int color_aware_trtcm_rfc4115_supported;
 
+	/**
+	 * When non-zero, it indicates that color aware mode is supported for
+	 * the srTCM packet per second  metering algorithm.
+	 */
+	int color_aware_srtcm_pps_supported;
+
 	/** When non-zero, it indicates that the policer packet recolor actions
 	 * are supported.
 	 * @see enum rte_mtr_policer_action
-- 
2.21.0