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Date: Wed, 19 Aug 2020 20:28:38 +0300 From: Shay Agroskin <shayagr@...zon.com> To: <davem@...emloft.net>, <netdev@...r.kernel.org> CC: Shay Agroskin <shayagr@...zon.com>, <dwmw@...zon.com>, <zorik@...zon.com>, <matua@...zon.com>, <saeedb@...zon.com>, <msw@...zon.com>, <aliguori@...zon.com>, <nafea@...zon.com>, <gtzalik@...zon.com>, <netanel@...zon.com>, <alisaidi@...zon.com>, <benh@...zon.com>, <akiyano@...zon.com>, <sameehj@...zon.com>, <ndagan@...zon.com> Subject: [PATCH V3 net 3/3] net: ena: Make missed_tx stat incremental Most statistics in ena driver are incremented, meaning that a stat's value is a sum of all increases done to it since driver/queue initialization. This patch makes all statistics this way, effectively making missed_tx statistic incremental. Also added a comment regarding rx_drops and tx_drops to make it clearer how these counters are calculated. Fixes: 11095fdb712b ("net: ena: add statistics for missed tx packets") Signed-off-by: Shay Agroskin <shayagr@...zon.com> --- drivers/net/ethernet/amazon/ena/ena_netdev.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/amazon/ena/ena_netdev.c b/drivers/net/ethernet/amazon/ena/ena_netdev.c index 233db15c970d..a3a8edf9a734 100644 --- a/drivers/net/ethernet/amazon/ena/ena_netdev.c +++ b/drivers/net/ethernet/amazon/ena/ena_netdev.c @@ -3687,7 +3687,7 @@ static int check_missing_comp_in_tx_queue(struct ena_adapter *adapter, } u64_stats_update_begin(&tx_ring->syncp); - tx_ring->tx_stats.missed_tx = missed_tx; + tx_ring->tx_stats.missed_tx += missed_tx; u64_stats_update_end(&tx_ring->syncp); return rc; @@ -4556,6 +4556,9 @@ static void ena_keep_alive_wd(void *adapter_data, tx_drops = ((u64)desc->tx_drops_high << 32) | desc->tx_drops_low; u64_stats_update_begin(&adapter->syncp); + /* These stats are accumulated by the device, so the counters indicate + * all drops since last reset. + */ adapter->dev_stats.rx_drops = rx_drops; adapter->dev_stats.tx_drops = tx_drops; u64_stats_update_end(&adapter->syncp); -- 2.17.1
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