netdev - [PATCH net v2 7/9] net: aquantia: Reset driver level statistics to zero on initialization

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Date:   Mon, 11 Dec 2017 15:16:24 +0300
From:   Igor Russkikh <igor.russkikh@...antia.com>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, David Arcari <darcari@...hat.com>,
        Pavel Belous <pavel.belous@...antia.com>,
        Nadezhda Krupnina <Nadezhda.Krupnina@...antia.com>,
        Simon Edelhaus <simon.edelhaus@...antia.com>,
        Igor Russkikh <igor.russkikh@...antia.com>
Subject: [PATCH net v2 7/9] net: aquantia: Reset driver level statistics to zero on initialization

Signed-off-by: Igor Russkikh <igor.russkikh@...antia.com>
---
 drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c | 7 +++++++
 drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c
index b0abd18..331e7b8 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_a0.c
@@ -344,6 +344,13 @@ static int hw_atl_a0_hw_init(struct aq_hw_s *self,
 	hw_atl_a0_hw_rss_set(self, &aq_nic_cfg->aq_rss);
 	hw_atl_a0_hw_rss_hash_set(self, &aq_nic_cfg->aq_rss);
 
+	/* Read initial hardware counters
+	 * and reset current in-driver statistics
+	 */
+	hw_atl_utils_update_stats(self);
+	memset(&PHAL_ATLANTIC_A0->curr_stats, 0,
+	       sizeof(PHAL_ATLANTIC_A0->curr_stats));
+
 	err = aq_hw_err_from_flags(self);
 	if (err < 0)
 		goto err_exit;
diff --git a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
index 36fddb1..1137034 100644
--- a/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
+++ b/drivers/net/ethernet/aquantia/atlantic/hw_atl/hw_atl_b0.c
@@ -397,6 +397,13 @@ static int hw_atl_b0_hw_init(struct aq_hw_s *self,
 	 */
 	aq_hw_write_reg(self, tx_dma_total_req_limit_adr, 24);
 
+	/* Read initial hardware counters
+	 * and reset current in-driver statistics
+	 */
+	hw_atl_utils_update_stats(self);
+	memset(&PHAL_ATLANTIC_B0->curr_stats, 0,
+	       sizeof(PHAL_ATLANTIC_B0->curr_stats));
+
 	err = aq_hw_err_from_flags(self);
 	if (err < 0)
 		goto err_exit;
-- 
2.7.4