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From ff519e2acd463bff6c5bb4e8d7ed350c9bae885b Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Sat, 19 Oct 2019 10:13:21 +0200
Subject: [PATCH 1/7] net: mvneta: introduce mvneta_update_stats routine
Introduce mvneta_update_stats routine to collect {rx/tx} statistics
(packets and bytes). This is a preliminary patch to add XDP support to
mvneta driver
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/ethernet/marvell/mvneta.c | 43 ++++++++++++++-------------
1 file changed, 22 insertions(+), 21 deletions(-)
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -1913,6 +1913,23 @@ static void mvneta_rxq_drop_pkts(struct
}
}
+static void
+mvneta_update_stats(struct mvneta_port *pp, u32 pkts,
+ u32 len, bool tx)
+{
+ struct mvneta_pcpu_stats *stats = this_cpu_ptr(pp->stats);
+
+ u64_stats_update_begin(&stats->syncp);
+ if (tx) {
+ stats->tx_packets += pkts;
+ stats->tx_bytes += len;
+ } else {
+ stats->rx_packets += pkts;
+ stats->rx_bytes += len;
+ }
+ u64_stats_update_end(&stats->syncp);
+}
+
static inline
int mvneta_rx_refill_queue(struct mvneta_port *pp, struct mvneta_rx_queue *rxq)
{
@@ -2093,14 +2110,8 @@ static int mvneta_rx_swbm(struct napi_st
rxq->left_size = 0;
}
- if (rcvd_pkts) {
- struct mvneta_pcpu_stats *stats = this_cpu_ptr(pp->stats);
-
- u64_stats_update_begin(&stats->syncp);
- stats->rx_packets += rcvd_pkts;
- stats->rx_bytes += rcvd_bytes;
- u64_stats_update_end(&stats->syncp);
- }
+ if (rcvd_pkts)
+ mvneta_update_stats(pp, rcvd_pkts, rcvd_bytes, false);
/* return some buffers to hardware queue, one at a time is too slow */
refill = mvneta_rx_refill_queue(pp, rxq);
@@ -2223,14 +2234,8 @@ err_drop_frame:
napi_gro_receive(napi, skb);
}
- if (rcvd_pkts) {
- struct mvneta_pcpu_stats *stats = this_cpu_ptr(pp->stats);
-
- u64_stats_update_begin(&stats->syncp);
- stats->rx_packets += rcvd_pkts;
- stats->rx_bytes += rcvd_bytes;
- u64_stats_update_end(&stats->syncp);
- }
+ if (rcvd_pkts)
+ mvneta_update_stats(pp, rcvd_pkts, rcvd_bytes, false);
/* Update rxq management counters */
mvneta_rxq_desc_num_update(pp, rxq, rx_done, rx_done);
@@ -2476,7 +2481,6 @@ static netdev_tx_t mvneta_tx(struct sk_b
out:
if (frags > 0) {
- struct mvneta_pcpu_stats *stats = this_cpu_ptr(pp->stats);
struct netdev_queue *nq = netdev_get_tx_queue(dev, txq_id);
netdev_tx_sent_queue(nq, len);
@@ -2491,10 +2495,7 @@ out:
else
txq->pending += frags;
- u64_stats_update_begin(&stats->syncp);
- stats->tx_packets++;
- stats->tx_bytes += len;
- u64_stats_update_end(&stats->syncp);
+ mvneta_update_stats(pp, 1, len, true);
} else {
dev->stats.tx_dropped++;
dev_kfree_skb_any(skb);
|
