qcacmn: Add histogram framework for DP path

A new framework added to calculate the per packet level
histogram

Change-Id: Iac52f7a672fa2afe1d6aec26931a8bc3115c6a98

dp/inc/cdp_txrx_hist_struct.h

@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2020 The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for
+ * any purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all
+ * copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
+ * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
+ * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
+ * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+ * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/**
+ * @file cdp_txrx_hist_struct.h
+ * @brief Define the host data path histogram data types
+ */
+#ifndef _CDP_TXRX_HIST_STRUCT_H_
+#define _CDP_TXRX_HIST_STRUCT_H_
+
+/*
+ * cdp_hist_bucket_index : Histogram Bucket
+ * @CDP_HIST_BUCKET_0: Bucket Index 0
+ * @CDP_HIST_BUCKET_1: Bucket Index 1
+ * @CDP_HIST_BUCKET_2: Bucket Index 2
+ * @CDP_HIST_BUCKET_3: Bucket Index 3
+ * @CDP_HIST_BUCKET_4: Bucket Index 4
+ * @CDP_HIST_BUCKET_5: Bucket Index 5
+ * @CDP_HIST_BUCKET_6: Bucket Index 6
+ * @CDP_HIST_BUCKET_7: Bucket Index 7
+ * @CDP_HIST_BUCKET_8: Bucket Index 8
+ * @CDP_HIST_BUCKET_9: Bucket Index 9
+ */
+enum cdp_hist_bucket_index {
+	CDP_HIST_BUCKET_0,
+	CDP_HIST_BUCKET_1,
+	CDP_HIST_BUCKET_2,
+	CDP_HIST_BUCKET_3,
+	CDP_HIST_BUCKET_4,
+	CDP_HIST_BUCKET_5,
+	CDP_HIST_BUCKET_6,
+	CDP_HIST_BUCKET_7,
+	CDP_HIST_BUCKET_8,
+	CDP_HIST_BUCKET_9,
+	CDP_HIST_BUCKET_MAX,
+};
+
+/*
+ * cdp_hist_types: Histogram Types
+ * @CDP_HIST_TYPE_SW_ENQEUE_DELAY: From stack to HW enqueue delay
+ * @CDP_HIST_TYPE_HW_COMP_DELAY: From HW enqueue to completion delay
+ * @CDP_HIST_TYPE_REAP_STACK: Rx HW reap to stack deliver delay
+ */
+enum cdp_hist_types {
+	CDP_HIST_TYPE_SW_ENQEUE_DELAY,
+	CDP_HIST_TYPE_HW_COMP_DELAY,
+	CDP_HIST_TYPE_REAP_STACK,
+	CDP_HIST_TYPE_MAX,
+};
+
+/*
+ * cdp_hist_bucket: Histogram Bucket
+ * @hist_type: Histogram type
+ * @freq: Frequency
+ */
+struct cdp_hist_bucket {
+	enum cdp_hist_types hist_type;
+	uint64_t freq[CDP_HIST_BUCKET_MAX];
+};
+
+/*
+ * cdp_hist_stats : Histogram of a stats type
+ * @hist: Frequency distribution
+ * @max: Max frequency
+ * @min: Minimum frequency
+ * @avg: Average frequency
+ */
+struct cdp_hist_stats {
+	struct cdp_hist_bucket hist;
+	int max;
+	int min;
+	int avg;
+};
+#endif /* _CDP_TXRX_HIST_STRUCT_H_ */