netdev - [PATCH v3 net-next 06/13] net: atlantic: additional per-queue stats

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Date:   Mon, 20 Jul 2020 21:32:37 +0300
From:   Mark Starovoytov <mstarovoitov@...vell.com>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
CC:     Igor Russkikh <irusskikh@...vell.com>, <netdev@...r.kernel.org>,
        "Dmitry Bogdanov" <dbogdanov@...vell.com>,
        Mark Starovoytov <mstarovoitov@...vell.com>
Subject: [PATCH v3 net-next 06/13] net: atlantic: additional per-queue stats

From: Dmitry Bogdanov <dbogdanov@...vell.com>

This patch adds additional per-queue stats, these could
be useful for debugging and diagnostics.

Signed-off-by: Dmitry Bogdanov <dbogdanov@...vell.com>
Signed-off-by: Mark Starovoytov <mstarovoitov@...vell.com>
Signed-off-by: Igor Russkikh <irusskikh@...vell.com>
---
 .../net/ethernet/aquantia/atlantic/aq_ethtool.c    |  3 +++
 drivers/net/ethernet/aquantia/atlantic/aq_ring.c   | 14 ++++++++++++++
 drivers/net/ethernet/aquantia/atlantic/aq_ring.h   |  3 +++
 drivers/net/ethernet/aquantia/atlantic/aq_vec.c    |  3 +++
 4 files changed, 23 insertions(+)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c b/drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c
index 98ba8355a0f0..9e18d30d2e44 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ethtool.c
@@ -94,6 +94,9 @@ static const char * const aq_ethtool_queue_rx_stat_names[] = {
 	"%sQueue[%d] InJumboPackets",
 	"%sQueue[%d] InLroPackets",
 	"%sQueue[%d] InErrors",
+	"%sQueue[%d] AllocFails",
+	"%sQueue[%d] SkbAllocFails",
+	"%sQueue[%d] Polls",
 };
 
 static const char * const aq_ethtool_queue_tx_stat_names[] = {
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
index b51ab2dbf6fe..4f913658eea4 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c
@@ -94,6 +94,11 @@ static int aq_get_rxpages(struct aq_ring_s *self, struct aq_ring_buff_s *rxbuf,
 	if (!rxbuf->rxdata.page) {
 		ret = aq_get_rxpage(&rxbuf->rxdata, order,
 				    aq_nic_get_dev(self->aq_nic));
+		if (ret) {
+			u64_stats_update_begin(&self->stats.rx.syncp);
+			self->stats.rx.alloc_fails++;
+			u64_stats_update_end(&self->stats.rx.syncp);
+		}
 		return ret;
 	}
 
@@ -414,6 +419,9 @@ int aq_ring_rx_clean(struct aq_ring_s *self,
 			skb = build_skb(aq_buf_vaddr(&buff->rxdata),
 					AQ_CFG_RX_FRAME_MAX);
 			if (unlikely(!skb)) {
+				u64_stats_update_begin(&self->stats.rx.syncp);
+				self->stats.rx.skb_alloc_fails++;
+				u64_stats_update_end(&self->stats.rx.syncp);
 				err = -ENOMEM;
 				goto err_exit;
 			}
@@ -427,6 +435,9 @@ int aq_ring_rx_clean(struct aq_ring_s *self,
 		} else {
 			skb = napi_alloc_skb(napi, AQ_CFG_RX_HDR_SIZE);
 			if (unlikely(!skb)) {
+				u64_stats_update_begin(&self->stats.rx.syncp);
+				self->stats.rx.skb_alloc_fails++;
+				u64_stats_update_end(&self->stats.rx.syncp);
 				err = -ENOMEM;
 				goto err_exit;
 			}
@@ -599,6 +610,9 @@ unsigned int aq_ring_fill_stats_data(struct aq_ring_s *self, u64 *data)
 			data[++count] = self->stats.rx.jumbo_packets;
 			data[++count] = self->stats.rx.lro_packets;
 			data[++count] = self->stats.rx.errors;
+			data[++count] = self->stats.rx.alloc_fails;
+			data[++count] = self->stats.rx.skb_alloc_fails;
+			data[++count] = self->stats.rx.polls;
 		} while (u64_stats_fetch_retry_irq(&self->stats.rx.syncp, start));
 	} else {
 		/* This data should mimic aq_ethtool_queue_tx_stat_names structure */
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.h b/drivers/net/ethernet/aquantia/atlantic/aq_ring.h
index c92c3a0651a9..93659e58f1ce 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.h
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.h
@@ -95,6 +95,9 @@ struct aq_ring_stats_rx_s {
 	u64 bytes;
 	u64 lro_packets;
 	u64 jumbo_packets;
+	u64 alloc_fails;
+	u64 skb_alloc_fails;
+	u64 polls;
 	u64 pg_losts;
 	u64 pg_flips;
 	u64 pg_reuses;
diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_vec.c b/drivers/net/ethernet/aquantia/atlantic/aq_vec.c
index b008d12e923a..d281322d7dd2 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_vec.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_vec.c
@@ -45,6 +45,9 @@ static int aq_vec_poll(struct napi_struct *napi, int budget)
 	} else {
 		for (i = 0U, ring = self->ring[0];
 			self->tx_rings > i; ++i, ring = self->ring[i]) {
+			u64_stats_update_begin(&ring[AQ_VEC_RX_ID].stats.rx.syncp);
+			ring[AQ_VEC_RX_ID].stats.rx.polls++;
+			u64_stats_update_end(&ring[AQ_VEC_RX_ID].stats.rx.syncp);
 			if (self->aq_hw_ops->hw_ring_tx_head_update) {
 				err = self->aq_hw_ops->hw_ring_tx_head_update(
 							self->aq_hw,
-- 
2.25.1