[dpdk-dev] [PATCH v4] add drop statistic for af_packet

[Vadim Podovinnikov <podovinnikov@protei.ru>]

Signed-off-by: Vadim Podovinnikov <podovinnikov@protei.ru>
---
 drivers/net/af_packet/rte_eth_af_packet.c | 33 +++++++++++++++++------
 1 file changed, 25 insertions(+), 8 deletions(-)

diff --git a/drivers/net/af_packet/rte_eth_af_packet.c b/drivers/net/af_packet/rte_eth_af_packet.c
index eee0fbce2..2aa7c0fcc 100644
--- a/drivers/net/af_packet/rte_eth_af_packet.c
+++ b/drivers/net/af_packet/rte_eth_af_packet.c
@@ -52,6 +52,7 @@ struct pkt_rx_queue {
 
 	volatile unsigned long rx_pkts;
 	volatile unsigned long rx_bytes;
+	volatile unsigned long rx_drop;
 };
 
 struct pkt_tx_queue {
@@ -322,6 +323,25 @@ eth_dev_info(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
 	return 0;
 }
 
+static void
+fill_eth_drop_stats(struct rte_eth_dev *dev)
+{
+	unsigned int i, imax;
+	struct pmd_internals *internal = dev->data->dev_private;
+	socklen_t sock_len = sizeof(struct tpacket_stats);
+	struct tpacket_stats st;
+
+	imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
+			internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
+	for (i = 0; i < imax; i++) {
+		memset(&st, 0, sock_len);
+		int rc = getsockopt(internal->rx_queue[i].sockfd, SOL_PACKET,
+					PACKET_STATISTICS, &st, &sock_len);
+		if (rc == 0)
+			internal->rx_queue[i].rx_drop += st.tp_drops;
+	}
+}
+
 static int
 eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats)
 {
@@ -329,22 +349,18 @@ eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *igb_stats)
 	unsigned long rx_total = 0, tx_total = 0, tx_err_total = 0;
 	unsigned long rx_bytes_total = 0, tx_bytes_total = 0, rx_drop = 0;
 	const struct pmd_internals *internal = dev->data->dev_private;
-	socklen_t sock_len = sizeof(struct tpacket_stats);
-	struct tpacket_stats st;
+
+	fill_eth_drop_stats(dev);
 
 	imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
 	        internal->nb_queues : RTE_ETHDEV_QUEUE_STAT_CNTRS);
 	for (i = 0; i < imax; i++) {
 		igb_stats->q_ipackets[i] = internal->rx_queue[i].rx_pkts;
 		igb_stats->q_ibytes[i] = internal->rx_queue[i].rx_bytes;
+		igb_stats->q_errors[i] = internal->rx_queue[i].rx_drop;
 		rx_total += igb_stats->q_ipackets[i];
 		rx_bytes_total += igb_stats->q_ibytes[i];
-
-		memset(&st, 0, sock_len);
-		int rc = getsockopt(internal->rx_queue[i].sockfd, SOL_PACKET,
-					PACKET_STATISTICS, &st, &sock_len);
-		if (rc == 0)
-			rx_drop += st.tp_drops;
+		rx_drop += igb_stats->q_errors[i];
 	}
 
 	imax = (internal->nb_queues < RTE_ETHDEV_QUEUE_STAT_CNTRS ?
@@ -375,6 +391,7 @@ eth_stats_reset(struct rte_eth_dev *dev)
 	for (i = 0; i < internal->nb_queues; i++) {
 		internal->rx_queue[i].rx_pkts = 0;
 		internal->rx_queue[i].rx_bytes = 0;
+		internal->rx_queue[i].rx_drop = 0;
 	}
 
 	for (i = 0; i < internal->nb_queues; i++) {
-- 
2.24.0