[dpdk-dev] [PATCH v4 06/10] table: added hash_key32 table stats

[Michal Jastrzebski <michalx.k.jastrzebski@intel.com>]

From: Maciej Gajdzica <maciejx.t.gajdzica@intel.com>

Added statistics for hash key32 table.

Signed-off-by: Maciej Gajdzica <maciejx.t.gajdzica@intel.com>
---
 lib/librte_table/rte_table_hash_key32.c |   41 +++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)

diff --git a/lib/librte_table/rte_table_hash_key32.c b/lib/librte_table/rte_table_hash_key32.c
index 6790594..c230629 100644
--- a/lib/librte_table/rte_table_hash_key32.c
+++ b/lib/librte_table/rte_table_hash_key32.c
@@ -46,6 +46,20 @@
 
 #define RTE_BUCKET_ENTRY_VALID						0x1LLU
 
+#ifdef RTE_TABLE_STATS_COLLECT
+
+#define RTE_TABLE_HASH_KEY32_STATS_PKTS_IN_ADD(table, val) \
+	table->stats.n_pkts_in += val
+#define RTE_TABLE_HASH_KEY32_STATS_PKTS_LOOKUP_MISS(table, val) \
+	table->stats.n_pkts_lookup_miss += val
+
+#else
+
+#define RTE_TABLE_HASH_KEY32_STATS_PKTS_IN_ADD(table, val)
+#define RTE_TABLE_HASH_KEY32_STATS_PKTS_LOOKUP_MISS(table, val)
+
+#endif
+
 struct rte_bucket_4_32 {
 	/* Cache line 0 */
 	uint64_t signature[4 + 1];
@@ -61,6 +75,8 @@ struct rte_bucket_4_32 {
 };
 
 struct rte_table_hash {
+	struct rte_table_stats stats;
+
 	/* Input parameters */
 	uint32_t n_buckets;
 	uint32_t n_entries_per_bucket;
@@ -850,6 +866,9 @@ rte_table_hash_lookup_key32_lru(
 	uint32_t pkt11_index, pkt20_index, pkt21_index;
 	uint64_t pkts_mask_out = 0;
 
+	__rte_unused uint32_t n_pkts_in = __builtin_popcountll(pkts_mask);
+	RTE_TABLE_HASH_KEY32_STATS_PKTS_IN_ADD(f, n_pkts_in);
+
 	/* Cannot run the pipeline with less than 5 packets */
 	if (__builtin_popcountll(pkts_mask) < 5) {
 		for ( ; pkts_mask; ) {
@@ -864,6 +883,7 @@ rte_table_hash_lookup_key32_lru(
 		}
 
 		*lookup_hit_mask = pkts_mask_out;
+		RTE_TABLE_HASH_KEY32_STATS_PKTS_LOOKUP_MISS(f, n_pkts_in - __builtin_popcountll(pkts_mask_out));
 		return 0;
 	}
 
@@ -954,6 +974,7 @@ rte_table_hash_lookup_key32_lru(
 		mbuf20, mbuf21, bucket20, bucket21, pkts_mask_out, entries, f);
 
 	*lookup_hit_mask = pkts_mask_out;
+	RTE_TABLE_HASH_KEY32_STATS_PKTS_LOOKUP_MISS(f, n_pkts_in - __builtin_popcountll(pkts_mask_out));
 	return 0;
 } /* rte_table_hash_lookup_key32_lru() */
 
@@ -974,6 +995,9 @@ rte_table_hash_lookup_key32_ext(
 	struct rte_bucket_4_32 *buckets[RTE_PORT_IN_BURST_SIZE_MAX];
 	uint64_t *keys[RTE_PORT_IN_BURST_SIZE_MAX];
 
+	__rte_unused uint32_t n_pkts_in = __builtin_popcountll(pkts_mask);
+	RTE_TABLE_HASH_KEY32_STATS_PKTS_IN_ADD(f, n_pkts_in);
+
 	/* Cannot run the pipeline with less than 5 packets */
 	if (__builtin_popcountll(pkts_mask) < 5) {
 		for ( ; pkts_mask; ) {
@@ -1100,15 +1124,31 @@ grind_next_buckets:
 	}
 
 	*lookup_hit_mask = pkts_mask_out;
+	RTE_TABLE_HASH_KEY32_STATS_PKTS_LOOKUP_MISS(f, n_pkts_in - __builtin_popcountll(pkts_mask_out));
 	return 0;
 } /* rte_table_hash_lookup_key32_ext() */
 
+static int
+rte_table_hash_key32_stats_read(void *table, struct rte_table_stats *stats, int clear)
+{
+	struct rte_table_hash *t = (struct rte_table_hash *) table;
+
+	if (stats != NULL)
+		memcpy(stats, &t->stats, sizeof(t->stats));
+
+	if (clear)
+		memset(&t->stats, 0, sizeof(t->stats));
+
+	return 0;
+}
+
 struct rte_table_ops rte_table_hash_key32_lru_ops = {
 	.f_create = rte_table_hash_create_key32_lru,
 	.f_free = rte_table_hash_free_key32_lru,
 	.f_add = rte_table_hash_entry_add_key32_lru,
 	.f_delete = rte_table_hash_entry_delete_key32_lru,
 	.f_lookup = rte_table_hash_lookup_key32_lru,
+	.f_stats = rte_table_hash_key32_stats_read,
 };
 
 struct rte_table_ops rte_table_hash_key32_ext_ops = {
@@ -1117,4 +1157,5 @@ struct rte_table_ops rte_table_hash_key32_ext_ops = {
 	.f_add = rte_table_hash_entry_add_key32_ext,
 	.f_delete = rte_table_hash_entry_delete_key32_ext,
 	.f_lookup = rte_table_hash_lookup_key32_ext,
+	.f_stats =rte_table_hash_key32_stats_read,
 };
-- 
1.7.9.5