[dpdk-dev] [PATCH v2 10/10] table: added lpm table stats

[Michal Jastrzebski]

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

Added lpm table statistics.

Signed-off-by: Maciej Gajdzica <maciejx.t.gajdzica at intel.com>
---
 config/common_bsdapp             |    1 +
 config/common_linuxapp           |    1 +
 lib/librte_table/rte_table_lpm.c |   34 ++++++++++++++++++++++++++++++++++
 3 files changed, 36 insertions(+)

diff --git a/config/common_bsdapp b/config/common_bsdapp
index acd4866..1d0f5b2 100644
--- a/config/common_bsdapp
+++ b/config/common_bsdapp
@@ -408,6 +408,7 @@ CONFIG_RTE_TABLE_HASH_KEY32_STATS_COLLECT=n
 CONFIG_RTE_TABLE_HASH_KEY8_STATS_COLLECT=n
 CONFIG_RTE_TABLE_HASH_LRU_STATS_COLLECT=n
 CONFIG_RTE_TABLE_LPM_IPV6_STATS_COLLECT=n
+CONFIG_RTE_TABLE_LPM_STATS_COLLECT=n

 #
 # Compile librte_pipeline
diff --git a/config/common_linuxapp b/config/common_linuxapp
index 740d769..8b01ca9 100644
--- a/config/common_linuxapp
+++ b/config/common_linuxapp
@@ -415,6 +415,7 @@ CONFIG_RTE_TABLE_HASH_KEY32_STATS_COLLECT=n
 CONFIG_RTE_TABLE_HASH_KEY8_STATS_COLLECT=n
 CONFIG_RTE_TABLE_HASH_LRU_STATS_COLLECT=n
 CONFIG_RTE_TABLE_LPM_IPV6_STATS_COLLECT=n
+CONFIG_RTE_TABLE_LPM_STATS_COLLECT=n

 #
 # Compile librte_pipeline
diff --git a/lib/librte_table/rte_table_lpm.c b/lib/librte_table/rte_table_lpm.c
index 64c684d..7d8f670 100644
--- a/lib/librte_table/rte_table_lpm.c
+++ b/lib/librte_table/rte_table_lpm.c
@@ -46,7 +46,23 @@

 #define RTE_TABLE_LPM_MAX_NEXT_HOPS                        256

+#ifdef RTE_TABLE_LPM_STATS_COLLECT
+
+#define RTE_TABLE_LPM_STATS_PKTS_IN_ADD(table, val) \
+       table->stats.n_pkts_in += val
+#define RTE_TABLE_LPM_STATS_PKTS_LOOKUP_MISS(table, val) \
+       table->stats.n_pkts_lookup_miss += val
+
+#else
+
+#define RTE_TABLE_LPM_STATS_PKTS_IN_ADD(table, val)
+#define RTE_TABLE_LPM_STATS_PKTS_LOOKUP_MISS(table, val)
+
+#endif
+
 struct rte_table_lpm {
+       struct rte_table_stats stats;
+
        /* Input parameters */
        uint32_t entry_size;
        uint32_t entry_unique_size;
@@ -313,6 +329,9 @@ rte_table_lpm_lookup(
        uint64_t pkts_out_mask = 0;
        uint32_t i;

+       __rte_unused uint32_t n_pkts_in = __builtin_popcountll(pkts_mask);
+       RTE_TABLE_LPM_STATS_PKTS_IN_ADD(lpm, n_pkts_in);
+
        pkts_out_mask = 0;
        for (i = 0; i < (uint32_t)(RTE_PORT_IN_BURST_SIZE_MAX -
                __builtin_clzll(pkts_mask)); i++) {
@@ -335,6 +354,20 @@ rte_table_lpm_lookup(
        }

        *lookup_hit_mask = pkts_out_mask;
+       RTE_TABLE_LPM_STATS_PKTS_LOOKUP_MISS(lpm, n_pkts_in - 
__builtin_popcountll(pkts_out_mask));
+       return 0;
+}
+
+static int
+rte_table_lpm_stats_read(void *table, struct rte_table_stats *stats, int clear)
+{
+       struct rte_table_lpm *t = (struct rte_table_lpm *) table;
+
+       if (stats != NULL)
+               memcpy(stats, &t->stats, sizeof(t->stats));
+
+       if (clear)
+               memset(&t->stats, 0, sizeof(t->stats));

        return 0;
 }
@@ -345,4 +378,5 @@ struct rte_table_ops rte_table_lpm_ops = {
        .f_add = rte_table_lpm_entry_add,
        .f_delete = rte_table_lpm_entry_delete,
        .f_lookup = rte_table_lpm_lookup,
+       .f_stats = rte_table_lpm_stats_read,
 };
-- 
1.7.9.5