From: Pawel Wodkowski <pawelx.wdkow...@intel.com>

This patch adds statistics collection for librte_pipeline.
Those statistics ale disabled by default during build time.

This patchset depends on patchset:
port: added port statistics

Signed-off-by: Pawel Wodkowski <pawelx.wodkowski at intel.com>
---
 config/common_bsdapp               |   1 +
 config/common_linuxapp             |   1 +
 lib/librte_pipeline/rte_pipeline.c | 185 ++++++++++++++++++++++++++++++++++---
 lib/librte_pipeline/rte_pipeline.h |  99 ++++++++++++++++++++
 4 files changed, 275 insertions(+), 11 deletions(-)

diff --git a/config/common_bsdapp b/config/common_bsdapp
index 829591c..25147b8 100644
--- a/config/common_bsdapp
+++ b/config/common_bsdapp
@@ -413,6 +413,7 @@ CONFIG_RTE_TABLE_LPM_STATS_COLLECT=n
 # Compile librte_pipeline
 #
 CONFIG_RTE_LIBRTE_PIPELINE=y
+CONFIG_RTE_PIPELINE_STATS_COLLECT=n

 #
 # Compile librte_kni
diff --git a/config/common_linuxapp b/config/common_linuxapp
index 891b5da..1497aa0 100644
--- a/config/common_linuxapp
+++ b/config/common_linuxapp
@@ -420,6 +420,7 @@ CONFIG_RTE_TABLE_LPM_STATS_COLLECT=n
 # Compile librte_pipeline
 #
 CONFIG_RTE_LIBRTE_PIPELINE=y
+CONFIG_RTE_PIPELINE_STATS_COLLECT=n

 #
 # Compile librte_kni
diff --git a/lib/librte_pipeline/rte_pipeline.c 
b/lib/librte_pipeline/rte_pipeline.c
index 36d92c9..69bf003 100644
--- a/lib/librte_pipeline/rte_pipeline.c
+++ b/lib/librte_pipeline/rte_pipeline.c
@@ -48,6 +48,17 @@

 #define RTE_TABLE_INVALID                                 UINT32_MAX

+#ifdef RTE_PIPELINE_STATS_COLLECT
+#define RTE_PIPELINE_STATS_ADD(counter, val) \
+       ({ (counter) += (val); })
+
+#define RTE_PIPELINE_STATS_ADD_M(counter, mask) \
+       ({ (counter) += __builtin_popcountll(mask); })
+#else
+#define RTE_PIPELINE_STATS_ADD(counter, val)
+#define RTE_PIPELINE_STATS_ADD_M(counter, mask)
+#endif
+
 struct rte_port_in {
        /* Input parameters */
        struct rte_port_in_ops ops;
@@ -63,6 +74,8 @@ struct rte_port_in {

        /* List of enabled ports */
        struct rte_port_in *next;
+
+       uint64_t n_pkts_dropped_by_ah;
 };

 struct rte_port_out {
@@ -74,6 +87,8 @@ struct rte_port_out {

        /* Handle to low-level port */
        void *h_port;
+
+       uint64_t n_pkts_dropped_by_ah;
 };

 struct rte_table {
@@ -90,6 +105,12 @@ struct rte_table {

        /* Handle to the low-level table object */
        void *h_table;
+
+       /* Stats for this table. */
+       uint64_t n_pkts_dropped_by_lkp_hit_ah;
+       uint64_t n_pkts_dropped_by_lkp_miss_ah;
+       uint64_t n_pkts_dropped_lkp_hit;
+       uint64_t n_pkts_dropped_lkp_miss;
 };

 #define RTE_PIPELINE_MAX_NAME_SZ                           124
@@ -1040,6 +1061,8 @@ rte_pipeline_action_handler_port_bulk(struct rte_pipeline 
*p,

                port_out->f_action_bulk(p->pkts, &pkts_mask, port_out->arg_ah);
                p->action_mask0[RTE_PIPELINE_ACTION_DROP] |= pkts_mask ^  mask;
+               RTE_PIPELINE_STATS_ADD_M(port_out->n_pkts_dropped_by_ah,
+                               pkts_mask ^  mask);
        }

        /* Output port TX */
@@ -1071,6 +1094,9 @@ rte_pipeline_action_handler_port(struct rte_pipeline *p, 
uint64_t pkts_mask)
                                p->action_mask0[RTE_PIPELINE_ACTION_DROP] |=
                                        (pkt_mask ^ 1LLU) << i;

+                               
RTE_PIPELINE_STATS_ADD(port_out->n_pkts_dropped_by_ah,
+                                               pkt_mask ^ 1LLU);
+
                                /* Output port TX */
                                if (pkt_mask != 0)
                                        port_out->ops.f_tx(port_out->h_port,
@@ -1104,6 +1130,9 @@ rte_pipeline_action_handler_port(struct rte_pipeline *p, 
uint64_t pkts_mask)
                                p->action_mask0[RTE_PIPELINE_ACTION_DROP] |=
                                        (pkt_mask ^ 1LLU) << i;

+                               
RTE_PIPELINE_STATS_ADD(port_out->n_pkts_dropped_by_ah,
+                                               pkt_mask ^ 1LLU);
+
                                /* Output port TX */
                                if (pkt_mask != 0)
                                        port_out->ops.f_tx(port_out->h_port,
@@ -1140,6 +1169,9 @@ rte_pipeline_action_handler_port_meta(struct rte_pipeline 
*p,
                                p->action_mask0[RTE_PIPELINE_ACTION_DROP] |=
                                        (pkt_mask ^ 1LLU) << i;

+                               
RTE_PIPELINE_STATS_ADD(port_out->n_pkts_dropped_by_ah,
+                                               pkt_mask ^ 1ULL);
+
                                /* Output port TX */
                                if (pkt_mask != 0)
                                        port_out->ops.f_tx(port_out->h_port,
@@ -1174,6 +1206,9 @@ rte_pipeline_action_handler_port_meta(struct rte_pipeline 
*p,
                                p->action_mask0[RTE_PIPELINE_ACTION_DROP] |=
                                        (pkt_mask ^ 1LLU) << i;

+                               
RTE_PIPELINE_STATS_ADD(port_out->n_pkts_dropped_by_ah,
+                                               pkt_mask ^ 1ULL);
+
                                /* Output port TX */
                                if (pkt_mask != 0)
                                        port_out->ops.f_tx(port_out->h_port,
@@ -1232,10 +1267,10 @@ rte_pipeline_run(struct rte_pipeline *p)
                if (port_in->f_action != NULL) {
                        uint64_t mask = pkts_mask;

-                       port_in->f_action(p->pkts, n_pkts, &pkts_mask,
-                               port_in->arg_ah);
-                       p->action_mask0[RTE_PIPELINE_ACTION_DROP] |=
-                               pkts_mask ^ mask;
+                       port_in->f_action(p->pkts, n_pkts, &pkts_mask, 
port_in->arg_ah);
+                       mask ^= pkts_mask;
+                       p->action_mask0[RTE_PIPELINE_ACTION_DROP] |= mask;
+                       RTE_PIPELINE_STATS_ADD_M(port_in->n_pkts_dropped_by_ah, 
mask);
                }

                /* Table */
@@ -1261,9 +1296,10 @@ rte_pipeline_run(struct rte_pipeline *p)
                                        table->f_action_miss(p->pkts,
                                                &lookup_miss_mask,
                                                default_entry, table->arg_ah);
-                                       p->action_mask0[
-                                               RTE_PIPELINE_ACTION_DROP] |=
-                                               lookup_miss_mask ^ mask;
+                                       mask ^= lookup_miss_mask;
+                                       
p->action_mask0[RTE_PIPELINE_ACTION_DROP] |= mask;
+                                       RTE_PIPELINE_STATS_ADD_M(
+                                               
table->n_pkts_dropped_by_lkp_miss_ah, mask);
                                }

                                /* Table reserved actions */
@@ -1277,6 +1313,10 @@ rte_pipeline_run(struct rte_pipeline *p)
                                        uint32_t pos = default_entry->action;

                                        p->action_mask0[pos] = lookup_miss_mask;
+                                       if (pos == RTE_PIPELINE_ACTION_DROP) {
+                                               
RTE_PIPELINE_STATS_ADD_M(table->n_pkts_dropped_lkp_miss,
+                                                       lookup_miss_mask);
+                                       }
                                }
                        }

@@ -1289,9 +1329,10 @@ rte_pipeline_run(struct rte_pipeline *p)
                                        table->f_action_hit(p->pkts,
                                                &lookup_hit_mask,
                                                p->entries, table->arg_ah);
-                                       p->action_mask0[
-                                               RTE_PIPELINE_ACTION_DROP] |=
-                                               lookup_hit_mask ^ mask;
+                                       mask ^= lookup_hit_mask;
+                                       
p->action_mask0[RTE_PIPELINE_ACTION_DROP] |= mask;
+                                       RTE_PIPELINE_STATS_ADD_M(
+                                               
table->n_pkts_dropped_by_lkp_hit_ah, mask);
                                }

                                /* Table reserved actions */
@@ -1308,6 +1349,9 @@ rte_pipeline_run(struct rte_pipeline *p)
                                p->action_mask0[RTE_PIPELINE_ACTION_TABLE] |=
                                        p->action_mask1[
                                                RTE_PIPELINE_ACTION_TABLE];
+
+                               
RTE_PIPELINE_STATS_ADD_M(table->n_pkts_dropped_lkp_hit,
+                                               
p->action_mask1[RTE_PIPELINE_ACTION_DROP]);
                        }

                        /* Prepare for next iteration */
@@ -1370,9 +1414,128 @@ rte_pipeline_port_out_packet_insert(struct rte_pipeline 
*p,

                if (pkt_mask != 0) /* Output port TX */
                        port_out->ops.f_tx(port_out->h_port, pkt);
-               else
+               else {
                        rte_pktmbuf_free(pkt);
+                       RTE_PIPELINE_STATS_ADD(port_out->n_pkts_dropped_by_ah, 
1);
+               }
+       }
+
+       return 0;
+}
+
+int rte_pipeline_port_in_stats_read(struct rte_pipeline *p, uint32_t port_id,
+       struct rte_pipeline_port_in_stats *stats, int clear)
+{
+       struct rte_port_in *port;
+       int retval;
+
+       if (p == NULL) {
+               RTE_LOG(ERR, PIPELINE, "%s: pipeline parameter NULL\n",
+                       __func__);
+               return -EINVAL;
+       }
+
+       if (port_id >= p->num_ports_in) {
+               RTE_LOG(ERR, PIPELINE,
+                       "%s: port IN ID %u is out of range\n",
+                       __func__, port_id);
+               return -EINVAL;
+       }
+
+       port = &p->ports_in[port_id];
+
+       if (port->ops.f_stats != NULL) {
+               retval = port->ops.f_stats(port->h_port, &stats->stats, clear);
+               if (retval)
+                       return retval;
+       } else if (stats != NULL)
+               memset(&stats->stats, 0, sizeof(stats->stats));
+
+       if (stats != NULL)
+               stats->n_pkts_dropped_by_ah = port->n_pkts_dropped_by_ah;
+
+       if (clear != 0)
+               port->n_pkts_dropped_by_ah = 0;
+
+       return 0;
+}
+
+int rte_pipeline_port_out_stats_read(struct rte_pipeline *p, uint32_t port_id,
+       struct rte_pipeline_port_out_stats *stats, int clear)
+{
+       struct rte_port_out *port;
+       int retval;
+
+       if (p == NULL) {
+               RTE_LOG(ERR, PIPELINE, "%s: pipeline parameter NULL\n", 
__func__);
+               return -EINVAL;
+       }
+
+       if (port_id >= p->num_ports_out) {
+               RTE_LOG(ERR, PIPELINE,
+                       "%s: port OUT ID %u is out of range\n", __func__, 
port_id);
+               return -EINVAL;
+       }
+
+       port = &p->ports_out[port_id];
+       if (port->ops.f_stats != NULL) {
+               retval = port->ops.f_stats(port->h_port, &stats->stats, clear);
+               if (retval != 0)
+                       return retval;
+       } else if (stats != NULL)
+               memset(&stats->stats, 0, sizeof(stats->stats));
+
+       if (stats != NULL)
+               stats->n_pkts_dropped_by_ah = port->n_pkts_dropped_by_ah;
+
+       if (clear != 0)
+               port->n_pkts_dropped_by_ah = 0;
+
+       return 0;
+}
+
+int rte_pipeline_table_stats_read(struct rte_pipeline *p, uint32_t table_id,
+       struct rte_pipeline_table_stats *stats, int clear)
+{
+       struct rte_table *table;
+       int retval;
+
+       if (p == NULL) {
+               RTE_LOG(ERR, PIPELINE, "%s: pipeline parameter NULL\n",
+                       __func__);
+               return -EINVAL;
+       }
+
+       if (table_id >= p->num_tables) {
+               RTE_LOG(ERR, PIPELINE,
+                               "%s: table %u is out of range\n", __func__, 
table_id);
+               return -EINVAL;
+       }
+
+       table = &p->tables[table_id];
+       if (table->ops.f_stats != NULL) {
+               retval = table->ops.f_stats(table->h_table, &stats->stats, 
clear);
+               if (retval != 0)
+                       return retval;
+       } else if (stats != NULL)
+               memset(&stats->stats, 0, sizeof(stats->stats));
+
+       if (stats != NULL) {
+               stats->n_pkts_dropped_by_lkp_hit_ah =
+                       table->n_pkts_dropped_by_lkp_hit_ah;
+               stats->n_pkts_dropped_by_lkp_miss_ah =
+                       table->n_pkts_dropped_by_lkp_miss_ah;
+               stats->n_pkts_dropped_lkp_hit = table->n_pkts_dropped_lkp_hit;
+               stats->n_pkts_dropped_lkp_miss = table->n_pkts_dropped_lkp_miss;
+       }
+
+       if (clear != 0) {
+               table->n_pkts_dropped_by_lkp_hit_ah = 0;
+               table->n_pkts_dropped_by_lkp_miss_ah = 0;
+               table->n_pkts_dropped_lkp_hit = 0;
+               table->n_pkts_dropped_lkp_miss = 0;
        }

        return 0;
 }
+
diff --git a/lib/librte_pipeline/rte_pipeline.h 
b/lib/librte_pipeline/rte_pipeline.h
index fb1014a..a7757c6 100644
--- a/lib/librte_pipeline/rte_pipeline.h
+++ b/lib/librte_pipeline/rte_pipeline.h
@@ -111,6 +111,45 @@ struct rte_pipeline_params {
        uint32_t offset_port_id;
 };

+/** Pipeline port in stats. */
+struct rte_pipeline_port_in_stats {
+       /** Port in stats. */
+       struct rte_port_in_stats stats;
+
+       /** Number of packets dropped by action handler. */
+       uint64_t n_pkts_dropped_by_ah;
+
+};
+
+/** Pipeline port out stats. */
+struct rte_pipeline_port_out_stats {
+       /** Port out stats. */
+       struct rte_port_out_stats stats;
+
+       /** Number of packets dropped by action handler. */
+       uint64_t n_pkts_dropped_by_ah;
+};
+
+/** Pipeline table stats. */
+struct rte_pipeline_table_stats {
+       /** Table stats. */
+       struct rte_table_stats stats;
+
+       /** Number of packets dropped by lookup hit action handler. */
+       uint64_t n_pkts_dropped_by_lkp_hit_ah;
+
+       /** Number of packets dropped by lookup miss action handler. */
+       uint64_t n_pkts_dropped_by_lkp_miss_ah;
+
+       /** Number of packets dropped by pipeline in behalf of this table based 
on
+        * on action specified in table entry. */
+       uint64_t n_pkts_dropped_lkp_hit;
+
+       /** Number of packets dropped by pipeline in behalf of this table based 
on
+        * on action specified in table entry. */
+       uint64_t n_pkts_dropped_lkp_miss;
+};
+
 /**
  * Pipeline create
  *
@@ -425,6 +464,26 @@ int rte_pipeline_table_entry_delete(struct rte_pipeline *p,
        int *key_found,
        struct rte_pipeline_table_entry *entry);

+/**
+ * Read pipeline table stats.
+ *
+ * This function reads table statistics identified by *table_id* of given
+ * pipeline *p*.
+ *
+ * @param p
+ *   Handle to pipeline instance.
+ * @param table_id
+ *   Port ID what stats will be returned.
+ * @param stats
+ *   Statistics buffer.
+ * @param clear
+ *   If not 0 clear stats after reading.
+ * @return
+ *   0 on success, error code otherwise
+ */
+int rte_pipeline_table_stats_read(struct rte_pipeline *p, uint32_t table_id,
+       struct rte_pipeline_table_stats *stats, int clear);
+
 /*
  * Port IN
  *
@@ -539,6 +598,26 @@ int rte_pipeline_port_in_enable(struct rte_pipeline *p,
 int rte_pipeline_port_in_disable(struct rte_pipeline *p,
        uint32_t port_id);

+/**
+ * Read pipeline port in stats.
+ *
+ * This function reads port in statistics identified by *port_id* of given
+ * pipeline *p*.
+ *
+ * @param p
+ *   Handle to pipeline instance.
+ * @param port_id
+ *   Port ID what stats will be returned.
+ * @param stats
+ *   Statistics buffer.
+ * @param clear
+ *   If not 0 clear stats after reading.
+ * @return
+ *   0 on success, error code otherwise
+ */
+int rte_pipeline_port_in_stats_read(struct rte_pipeline *p, uint32_t port_id,
+       struct rte_pipeline_port_in_stats *stats, int clear);
+
 /*
  * Port OUT
  *
@@ -657,6 +736,26 @@ int rte_pipeline_port_out_packet_insert(struct 
rte_pipeline *p,
        uint32_t port_id,
        struct rte_mbuf *pkt);

+/**
+ * Read pipeline port out stats.
+ *
+ * This function reads port out statistics identified by *port_id* of given
+ * pipeline *p*.
+ *
+ * @param p
+ *   Handle to pipeline instance.
+ * @param port_id
+ *   Port ID what stats will be returned.
+ * @param stats
+ *   Statistics buffer.
+ * @param clear
+ *   If not 0 clear stats after reading.
+ * @return
+ *   0 on success, error code otherwise
+ */
+int rte_pipeline_port_out_stats_read(struct rte_pipeline *p, uint32_t port_id,
+       struct rte_pipeline_port_out_stats *stats, int clear);
+
 #ifdef __cplusplus
 }
 #endif
-- 
1.9.1

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