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Message-ID: <ZQHKiU6SNtq7t1Fi@xhacker>
Date: Wed, 13 Sep 2023 22:43:21 +0800
From: Jisheng Zhang <jszhang@...nel.org>
To: Sasha Levin <sashal@...nel.org>
Cc: linux-kernel@...r.kernel.org, stable@...r.kernel.org,
Jakub Kicinski <kuba@...nel.org>, alexandre.torgue@...s.st.com,
joabreu@...opsys.com, davem@...emloft.net, edumazet@...gle.com,
pabeni@...hat.com, mcoquelin.stm32@...il.com, wens@...e.org,
jernej.skrabec@...il.com, samuel@...lland.org,
netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev
Subject: Re: [PATCH AUTOSEL 6.5 05/45] net: stmmac: use per-queue 64 bit
statistics where necessary
On Fri, Sep 08, 2023 at 02:12:46PM -0400, Sasha Levin wrote:
> From: Jisheng Zhang <jszhang@...nel.org>
>
> [ Upstream commit 133466c3bbe171f826294161db203f7670bb30c8 ]
>
> Currently, there are two major issues with stmmac driver statistics
> First of all, statistics in stmmac_extra_stats, stmmac_rxq_stats
> and stmmac_txq_stats are 32 bit variables on 32 bit platforms. This
> can cause some stats to overflow after several minutes of
> high traffic, for example rx_pkt_n, tx_pkt_n and so on.
>
> Secondly, if HW supports multiqueues, there are frequent cacheline
> ping pongs on some driver statistic vars, for example, normal_irq_n,
> tx_pkt_n and so on. What's more, frequent cacheline ping pongs on
> normal_irq_n happens in ISR, this makes the situation worse.
>
> To improve the driver, we convert those statistics to 64 bit, implement
> ndo_get_stats64 and update .get_ethtool_stats implementation
> accordingly. We also use per-queue statistics where necessary to remove
> the cacheline ping pongs as much as possible to make multiqueue
> operations faster. Those statistics which are not possible to overflow
> and not frequently updated are kept as is.
Hi Sasha,
This patch cause a bug report recently[1], and I'm trying to fix it. So
could this back-port-to-stable tree be hold on until the fix is merged.
PS: If we want to apply this patch to stable tree, besides the above
fix, we also need to apply below preparation commit:
2eb85b750512 ("net: stmmac: don't clear network statistics in .ndo_open())
Thanks in advance
Link: https://lore.kernel.org/netdev/20230911171102.cwieugrpthm7ywbm@pengutronix.de/ [1]
>
> Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
> Link: https://lore.kernel.org/r/20230717160630.1892-3-jszhang@kernel.org
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
> drivers/net/ethernet/stmicro/stmmac/common.h | 39 ++--
> .../net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 12 +-
> .../ethernet/stmicro/stmmac/dwmac100_dma.c | 7 +-
> .../ethernet/stmicro/stmmac/dwmac4_descs.c | 16 +-
> .../net/ethernet/stmicro/stmmac/dwmac4_lib.c | 15 +-
> .../net/ethernet/stmicro/stmmac/dwmac_lib.c | 12 +-
> .../ethernet/stmicro/stmmac/dwxgmac2_descs.c | 6 +-
> .../ethernet/stmicro/stmmac/dwxgmac2_dma.c | 14 +-
> .../net/ethernet/stmicro/stmmac/enh_desc.c | 20 +-
> drivers/net/ethernet/stmicro/stmmac/hwif.h | 12 +-
> .../net/ethernet/stmicro/stmmac/norm_desc.c | 15 +-
> drivers/net/ethernet/stmicro/stmmac/stmmac.h | 2 +
> .../ethernet/stmicro/stmmac/stmmac_ethtool.c | 123 ++++++++---
> .../net/ethernet/stmicro/stmmac/stmmac_main.c | 200 ++++++++++++++----
> 14 files changed, 335 insertions(+), 158 deletions(-)
>
> diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
> index 16e67c18b6f71..57f2137bbe9d9 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/common.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/common.h
> @@ -59,13 +59,25 @@
> /* #define FRAME_FILTER_DEBUG */
>
> struct stmmac_txq_stats {
> - unsigned long tx_pkt_n;
> - unsigned long tx_normal_irq_n;
> + u64 tx_bytes;
> + u64 tx_packets;
> + u64 tx_pkt_n;
> + u64 tx_normal_irq_n;
> + u64 napi_poll;
> + u64 tx_clean;
> + u64 tx_set_ic_bit;
> + u64 tx_tso_frames;
> + u64 tx_tso_nfrags;
> + struct u64_stats_sync syncp;
> };
>
> struct stmmac_rxq_stats {
> - unsigned long rx_pkt_n;
> - unsigned long rx_normal_irq_n;
> + u64 rx_bytes;
> + u64 rx_packets;
> + u64 rx_pkt_n;
> + u64 rx_normal_irq_n;
> + u64 napi_poll;
> + struct u64_stats_sync syncp;
> };
>
> /* Extra statistic and debug information exposed by ethtool */
> @@ -81,6 +93,7 @@ struct stmmac_extra_stats {
> unsigned long tx_frame_flushed;
> unsigned long tx_payload_error;
> unsigned long tx_ip_header_error;
> + unsigned long tx_collision;
> /* Receive errors */
> unsigned long rx_desc;
> unsigned long sa_filter_fail;
> @@ -113,14 +126,6 @@ struct stmmac_extra_stats {
> /* Tx/Rx IRQ Events */
> unsigned long rx_early_irq;
> unsigned long threshold;
> - unsigned long tx_pkt_n;
> - unsigned long rx_pkt_n;
> - unsigned long normal_irq_n;
> - unsigned long rx_normal_irq_n;
> - unsigned long napi_poll;
> - unsigned long tx_normal_irq_n;
> - unsigned long tx_clean;
> - unsigned long tx_set_ic_bit;
> unsigned long irq_receive_pmt_irq_n;
> /* MMC info */
> unsigned long mmc_tx_irq_n;
> @@ -190,18 +195,16 @@ struct stmmac_extra_stats {
> unsigned long mtl_rx_fifo_ctrl_active;
> unsigned long mac_rx_frame_ctrl_fifo;
> unsigned long mac_gmii_rx_proto_engine;
> - /* TSO */
> - unsigned long tx_tso_frames;
> - unsigned long tx_tso_nfrags;
> /* EST */
> unsigned long mtl_est_cgce;
> unsigned long mtl_est_hlbs;
> unsigned long mtl_est_hlbf;
> unsigned long mtl_est_btre;
> unsigned long mtl_est_btrlm;
> - /* per queue statistics */
> - struct stmmac_txq_stats txq_stats[MTL_MAX_TX_QUEUES];
> - struct stmmac_rxq_stats rxq_stats[MTL_MAX_RX_QUEUES];
> + unsigned long rx_dropped;
> + unsigned long rx_errors;
> + unsigned long tx_dropped;
> + unsigned long tx_errors;
> };
>
> /* Safety Feature statistics exposed by ethtool */
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
> index 1e714380d1250..b20f8ba34efd9 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
> @@ -440,8 +440,10 @@ static int sun8i_dwmac_dma_interrupt(struct stmmac_priv *priv,
> struct stmmac_extra_stats *x, u32 chan,
> u32 dir)
> {
> - u32 v;
> + struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[chan];
> + struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[chan];
> int ret = 0;
> + u32 v;
>
> v = readl(ioaddr + EMAC_INT_STA);
>
> @@ -452,7 +454,9 @@ static int sun8i_dwmac_dma_interrupt(struct stmmac_priv *priv,
>
> if (v & EMAC_TX_INT) {
> ret |= handle_tx;
> - x->tx_normal_irq_n++;
> + u64_stats_update_begin(&tx_q->txq_stats.syncp);
> + tx_q->txq_stats.tx_normal_irq_n++;
> + u64_stats_update_end(&tx_q->txq_stats.syncp);
> }
>
> if (v & EMAC_TX_DMA_STOP_INT)
> @@ -474,7 +478,9 @@ static int sun8i_dwmac_dma_interrupt(struct stmmac_priv *priv,
>
> if (v & EMAC_RX_INT) {
> ret |= handle_rx;
> - x->rx_normal_irq_n++;
> + u64_stats_update_begin(&rx_q->rxq_stats.syncp);
> + rx_q->rxq_stats.rx_normal_irq_n++;
> + u64_stats_update_end(&rx_q->rxq_stats.syncp);
> }
>
> if (v & EMAC_RX_BUF_UA_INT)
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
> index 1c32b1788f02e..dea270f60cc3e 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
> @@ -82,29 +82,24 @@ static void dwmac100_dump_dma_regs(struct stmmac_priv *priv,
> }
>
> /* DMA controller has two counters to track the number of the missed frames. */
> -static void dwmac100_dma_diagnostic_fr(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> +static void dwmac100_dma_diagnostic_fr(struct stmmac_extra_stats *x,
> void __iomem *ioaddr)
> {
> u32 csr8 = readl(ioaddr + DMA_MISSED_FRAME_CTR);
>
> if (unlikely(csr8)) {
> if (csr8 & DMA_MISSED_FRAME_OVE) {
> - stats->rx_over_errors += 0x800;
> x->rx_overflow_cntr += 0x800;
> } else {
> unsigned int ove_cntr;
> ove_cntr = ((csr8 & DMA_MISSED_FRAME_OVE_CNTR) >> 17);
> - stats->rx_over_errors += ove_cntr;
> x->rx_overflow_cntr += ove_cntr;
> }
>
> if (csr8 & DMA_MISSED_FRAME_OVE_M) {
> - stats->rx_missed_errors += 0xffff;
> x->rx_missed_cntr += 0xffff;
> } else {
> unsigned int miss_f = (csr8 & DMA_MISSED_FRAME_M_CNTR);
> - stats->rx_missed_errors += miss_f;
> x->rx_missed_cntr += miss_f;
> }
> }
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
> index 6a011d8633e8e..89a14084c6117 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c
> @@ -13,8 +13,7 @@
> #include "dwmac4.h"
> #include "dwmac4_descs.h"
>
> -static int dwmac4_wrback_get_tx_status(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> +static int dwmac4_wrback_get_tx_status(struct stmmac_extra_stats *x,
> struct dma_desc *p,
> void __iomem *ioaddr)
> {
> @@ -40,15 +39,13 @@ static int dwmac4_wrback_get_tx_status(struct net_device_stats *stats,
> x->tx_frame_flushed++;
> if (unlikely(tdes3 & TDES3_LOSS_CARRIER)) {
> x->tx_losscarrier++;
> - stats->tx_carrier_errors++;
> }
> if (unlikely(tdes3 & TDES3_NO_CARRIER)) {
> x->tx_carrier++;
> - stats->tx_carrier_errors++;
> }
> if (unlikely((tdes3 & TDES3_LATE_COLLISION) ||
> (tdes3 & TDES3_EXCESSIVE_COLLISION)))
> - stats->collisions +=
> + x->tx_collision +=
> (tdes3 & TDES3_COLLISION_COUNT_MASK)
> >> TDES3_COLLISION_COUNT_SHIFT;
>
> @@ -73,8 +70,7 @@ static int dwmac4_wrback_get_tx_status(struct net_device_stats *stats,
> return ret;
> }
>
> -static int dwmac4_wrback_get_rx_status(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> +static int dwmac4_wrback_get_rx_status(struct stmmac_extra_stats *x,
> struct dma_desc *p)
> {
> unsigned int rdes1 = le32_to_cpu(p->des1);
> @@ -93,7 +89,7 @@ static int dwmac4_wrback_get_rx_status(struct net_device_stats *stats,
>
> if (unlikely(rdes3 & RDES3_ERROR_SUMMARY)) {
> if (unlikely(rdes3 & RDES3_GIANT_PACKET))
> - stats->rx_length_errors++;
> + x->rx_length++;
> if (unlikely(rdes3 & RDES3_OVERFLOW_ERROR))
> x->rx_gmac_overflow++;
>
> @@ -103,10 +99,8 @@ static int dwmac4_wrback_get_rx_status(struct net_device_stats *stats,
> if (unlikely(rdes3 & RDES3_RECEIVE_ERROR))
> x->rx_mii++;
>
> - if (unlikely(rdes3 & RDES3_CRC_ERROR)) {
> + if (unlikely(rdes3 & RDES3_CRC_ERROR))
> x->rx_crc_errors++;
> - stats->rx_crc_errors++;
> - }
>
> if (unlikely(rdes3 & RDES3_DRIBBLE_ERROR))
> x->dribbling_bit++;
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
> index 03ceb6a940732..980e5f8a37ec5 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
> @@ -171,6 +171,8 @@ int dwmac4_dma_interrupt(struct stmmac_priv *priv, void __iomem *ioaddr,
> const struct dwmac4_addrs *dwmac4_addrs = priv->plat->dwmac4_addrs;
> u32 intr_status = readl(ioaddr + DMA_CHAN_STATUS(dwmac4_addrs, chan));
> u32 intr_en = readl(ioaddr + DMA_CHAN_INTR_ENA(dwmac4_addrs, chan));
> + struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[chan];
> + struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[chan];
> int ret = 0;
>
> if (dir == DMA_DIR_RX)
> @@ -198,18 +200,19 @@ int dwmac4_dma_interrupt(struct stmmac_priv *priv, void __iomem *ioaddr,
> }
> }
> /* TX/RX NORMAL interrupts */
> - if (likely(intr_status & DMA_CHAN_STATUS_NIS))
> - x->normal_irq_n++;
> if (likely(intr_status & DMA_CHAN_STATUS_RI)) {
> - x->rx_normal_irq_n++;
> - x->rxq_stats[chan].rx_normal_irq_n++;
> + u64_stats_update_begin(&rx_q->rxq_stats.syncp);
> + rx_q->rxq_stats.rx_normal_irq_n++;
> + u64_stats_update_end(&rx_q->rxq_stats.syncp);
> ret |= handle_rx;
> }
> if (likely(intr_status & DMA_CHAN_STATUS_TI)) {
> - x->tx_normal_irq_n++;
> - x->txq_stats[chan].tx_normal_irq_n++;
> + u64_stats_update_begin(&tx_q->txq_stats.syncp);
> + tx_q->txq_stats.tx_normal_irq_n++;
> + u64_stats_update_end(&tx_q->txq_stats.syncp);
> ret |= handle_tx;
> }
> +
> if (unlikely(intr_status & DMA_CHAN_STATUS_TBU))
> ret |= handle_tx;
> if (unlikely(intr_status & DMA_CHAN_STATUS_ERI))
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
> index 0b6f999a83052..aaa09b16b016f 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
> @@ -10,6 +10,7 @@
> #include <linux/iopoll.h>
> #include "common.h"
> #include "dwmac_dma.h"
> +#include "stmmac.h"
>
> #define GMAC_HI_REG_AE 0x80000000
>
> @@ -161,6 +162,8 @@ static void show_rx_process_state(unsigned int status)
> int dwmac_dma_interrupt(struct stmmac_priv *priv, void __iomem *ioaddr,
> struct stmmac_extra_stats *x, u32 chan, u32 dir)
> {
> + struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[chan];
> + struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[chan];
> int ret = 0;
> /* read the status register (CSR5) */
> u32 intr_status = readl(ioaddr + DMA_STATUS);
> @@ -208,17 +211,20 @@ int dwmac_dma_interrupt(struct stmmac_priv *priv, void __iomem *ioaddr,
> }
> /* TX/RX NORMAL interrupts */
> if (likely(intr_status & DMA_STATUS_NIS)) {
> - x->normal_irq_n++;
> if (likely(intr_status & DMA_STATUS_RI)) {
> u32 value = readl(ioaddr + DMA_INTR_ENA);
> /* to schedule NAPI on real RIE event. */
> if (likely(value & DMA_INTR_ENA_RIE)) {
> - x->rx_normal_irq_n++;
> + u64_stats_update_begin(&rx_q->rxq_stats.syncp);
> + rx_q->rxq_stats.rx_normal_irq_n++;
> + u64_stats_update_end(&rx_q->rxq_stats.syncp);
> ret |= handle_rx;
> }
> }
> if (likely(intr_status & DMA_STATUS_TI)) {
> - x->tx_normal_irq_n++;
> + u64_stats_update_begin(&tx_q->txq_stats.syncp);
> + tx_q->txq_stats.tx_normal_irq_n++;
> + u64_stats_update_end(&tx_q->txq_stats.syncp);
> ret |= handle_tx;
> }
> if (unlikely(intr_status & DMA_STATUS_ERI))
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
> index 13c347ee8be9c..fc82862a612c7 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_descs.c
> @@ -8,8 +8,7 @@
> #include "common.h"
> #include "dwxgmac2.h"
>
> -static int dwxgmac2_get_tx_status(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> +static int dwxgmac2_get_tx_status(struct stmmac_extra_stats *x,
> struct dma_desc *p, void __iomem *ioaddr)
> {
> unsigned int tdes3 = le32_to_cpu(p->des3);
> @@ -23,8 +22,7 @@ static int dwxgmac2_get_tx_status(struct net_device_stats *stats,
> return ret;
> }
>
> -static int dwxgmac2_get_rx_status(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> +static int dwxgmac2_get_rx_status(struct stmmac_extra_stats *x,
> struct dma_desc *p)
> {
> unsigned int rdes3 = le32_to_cpu(p->des3);
> diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
> index 070bd912580b7..3b5f8c595219b 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
> @@ -337,6 +337,8 @@ static int dwxgmac2_dma_interrupt(struct stmmac_priv *priv,
> struct stmmac_extra_stats *x, u32 chan,
> u32 dir)
> {
> + struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[chan];
> + struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[chan];
> u32 intr_status = readl(ioaddr + XGMAC_DMA_CH_STATUS(chan));
> u32 intr_en = readl(ioaddr + XGMAC_DMA_CH_INT_EN(chan));
> int ret = 0;
> @@ -364,16 +366,16 @@ static int dwxgmac2_dma_interrupt(struct stmmac_priv *priv,
>
> /* TX/RX NORMAL interrupts */
> if (likely(intr_status & XGMAC_NIS)) {
> - x->normal_irq_n++;
> -
> if (likely(intr_status & XGMAC_RI)) {
> - x->rx_normal_irq_n++;
> - x->rxq_stats[chan].rx_normal_irq_n++;
> + u64_stats_update_begin(&rx_q->rxq_stats.syncp);
> + rx_q->rxq_stats.rx_normal_irq_n++;
> + u64_stats_update_end(&rx_q->rxq_stats.syncp);
> ret |= handle_rx;
> }
> if (likely(intr_status & (XGMAC_TI | XGMAC_TBU))) {
> - x->tx_normal_irq_n++;
> - x->txq_stats[chan].tx_normal_irq_n++;
> + u64_stats_update_begin(&tx_q->txq_stats.syncp);
> + tx_q->txq_stats.tx_normal_irq_n++;
> + u64_stats_update_end(&tx_q->txq_stats.syncp);
> ret |= handle_tx;
> }
> }
> diff --git a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
> index a91d8f13a931d..937b7a0466fca 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/enh_desc.c
> @@ -12,8 +12,7 @@
> #include "common.h"
> #include "descs_com.h"
>
> -static int enh_desc_get_tx_status(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> +static int enh_desc_get_tx_status(struct stmmac_extra_stats *x,
> struct dma_desc *p, void __iomem *ioaddr)
> {
> unsigned int tdes0 = le32_to_cpu(p->des0);
> @@ -38,15 +37,13 @@ static int enh_desc_get_tx_status(struct net_device_stats *stats,
>
> if (unlikely(tdes0 & ETDES0_LOSS_CARRIER)) {
> x->tx_losscarrier++;
> - stats->tx_carrier_errors++;
> }
> if (unlikely(tdes0 & ETDES0_NO_CARRIER)) {
> x->tx_carrier++;
> - stats->tx_carrier_errors++;
> }
> if (unlikely((tdes0 & ETDES0_LATE_COLLISION) ||
> (tdes0 & ETDES0_EXCESSIVE_COLLISIONS)))
> - stats->collisions +=
> + x->tx_collision +=
> (tdes0 & ETDES0_COLLISION_COUNT_MASK) >> 3;
>
> if (unlikely(tdes0 & ETDES0_EXCESSIVE_DEFERRAL))
> @@ -117,8 +114,7 @@ static int enh_desc_coe_rdes0(int ipc_err, int type, int payload_err)
> return ret;
> }
>
> -static void enh_desc_get_ext_status(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> +static void enh_desc_get_ext_status(struct stmmac_extra_stats *x,
> struct dma_extended_desc *p)
> {
> unsigned int rdes0 = le32_to_cpu(p->basic.des0);
> @@ -182,8 +178,7 @@ static void enh_desc_get_ext_status(struct net_device_stats *stats,
> }
> }
>
> -static int enh_desc_get_rx_status(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> +static int enh_desc_get_rx_status(struct stmmac_extra_stats *x,
> struct dma_desc *p)
> {
> unsigned int rdes0 = le32_to_cpu(p->des0);
> @@ -193,14 +188,14 @@ static int enh_desc_get_rx_status(struct net_device_stats *stats,
> return dma_own;
>
> if (unlikely(!(rdes0 & RDES0_LAST_DESCRIPTOR))) {
> - stats->rx_length_errors++;
> + x->rx_length++;
> return discard_frame;
> }
>
> if (unlikely(rdes0 & RDES0_ERROR_SUMMARY)) {
> if (unlikely(rdes0 & RDES0_DESCRIPTOR_ERROR)) {
> x->rx_desc++;
> - stats->rx_length_errors++;
> + x->rx_length++;
> }
> if (unlikely(rdes0 & RDES0_OVERFLOW_ERROR))
> x->rx_gmac_overflow++;
> @@ -209,7 +204,7 @@ static int enh_desc_get_rx_status(struct net_device_stats *stats,
> pr_err("\tIPC Csum Error/Giant frame\n");
>
> if (unlikely(rdes0 & RDES0_COLLISION))
> - stats->collisions++;
> + x->rx_collision++;
> if (unlikely(rdes0 & RDES0_RECEIVE_WATCHDOG))
> x->rx_watchdog++;
>
> @@ -218,7 +213,6 @@ static int enh_desc_get_rx_status(struct net_device_stats *stats,
>
> if (unlikely(rdes0 & RDES0_CRC_ERROR)) {
> x->rx_crc_errors++;
> - stats->rx_crc_errors++;
> }
> ret = discard_frame;
> }
> diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
> index 6ee7cf07cfd76..652af8f6e75ff 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
> @@ -57,8 +57,7 @@ struct stmmac_desc_ops {
> /* Last tx segment reports the transmit status */
> int (*get_tx_ls)(struct dma_desc *p);
> /* Return the transmit status looking at the TDES1 */
> - int (*tx_status)(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> + int (*tx_status)(struct stmmac_extra_stats *x,
> struct dma_desc *p, void __iomem *ioaddr);
> /* Get the buffer size from the descriptor */
> int (*get_tx_len)(struct dma_desc *p);
> @@ -67,11 +66,9 @@ struct stmmac_desc_ops {
> /* Get the receive frame size */
> int (*get_rx_frame_len)(struct dma_desc *p, int rx_coe_type);
> /* Return the reception status looking at the RDES1 */
> - int (*rx_status)(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> + int (*rx_status)(struct stmmac_extra_stats *x,
> struct dma_desc *p);
> - void (*rx_extended_status)(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> + void (*rx_extended_status)(struct stmmac_extra_stats *x,
> struct dma_extended_desc *p);
> /* Set tx timestamp enable bit */
> void (*enable_tx_timestamp) (struct dma_desc *p);
> @@ -191,8 +188,7 @@ struct stmmac_dma_ops {
> void (*dma_tx_mode)(struct stmmac_priv *priv, void __iomem *ioaddr,
> int mode, u32 channel, int fifosz, u8 qmode);
> /* To track extra statistic (if supported) */
> - void (*dma_diagnostic_fr)(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> + void (*dma_diagnostic_fr)(struct stmmac_extra_stats *x,
> void __iomem *ioaddr);
> void (*enable_dma_transmission) (void __iomem *ioaddr);
> void (*enable_dma_irq)(struct stmmac_priv *priv, void __iomem *ioaddr,
> diff --git a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
> index 350e6670a5766..68a7cfcb1d8f3 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/norm_desc.c
> @@ -12,8 +12,7 @@
> #include "common.h"
> #include "descs_com.h"
>
> -static int ndesc_get_tx_status(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> +static int ndesc_get_tx_status(struct stmmac_extra_stats *x,
> struct dma_desc *p, void __iomem *ioaddr)
> {
> unsigned int tdes0 = le32_to_cpu(p->des0);
> @@ -31,15 +30,12 @@ static int ndesc_get_tx_status(struct net_device_stats *stats,
> if (unlikely(tdes0 & TDES0_ERROR_SUMMARY)) {
> if (unlikely(tdes0 & TDES0_UNDERFLOW_ERROR)) {
> x->tx_underflow++;
> - stats->tx_fifo_errors++;
> }
> if (unlikely(tdes0 & TDES0_NO_CARRIER)) {
> x->tx_carrier++;
> - stats->tx_carrier_errors++;
> }
> if (unlikely(tdes0 & TDES0_LOSS_CARRIER)) {
> x->tx_losscarrier++;
> - stats->tx_carrier_errors++;
> }
> if (unlikely((tdes0 & TDES0_EXCESSIVE_DEFERRAL) ||
> (tdes0 & TDES0_EXCESSIVE_COLLISIONS) ||
> @@ -47,7 +43,7 @@ static int ndesc_get_tx_status(struct net_device_stats *stats,
> unsigned int collisions;
>
> collisions = (tdes0 & TDES0_COLLISION_COUNT_MASK) >> 3;
> - stats->collisions += collisions;
> + x->tx_collision += collisions;
> }
> ret = tx_err;
> }
> @@ -70,8 +66,7 @@ static int ndesc_get_tx_len(struct dma_desc *p)
> * and, if required, updates the multicast statistics.
> * In case of success, it returns good_frame because the GMAC device
> * is supposed to be able to compute the csum in HW. */
> -static int ndesc_get_rx_status(struct net_device_stats *stats,
> - struct stmmac_extra_stats *x,
> +static int ndesc_get_rx_status(struct stmmac_extra_stats *x,
> struct dma_desc *p)
> {
> int ret = good_frame;
> @@ -81,7 +76,7 @@ static int ndesc_get_rx_status(struct net_device_stats *stats,
> return dma_own;
>
> if (unlikely(!(rdes0 & RDES0_LAST_DESCRIPTOR))) {
> - stats->rx_length_errors++;
> + x->rx_length++;
> return discard_frame;
> }
>
> @@ -96,11 +91,9 @@ static int ndesc_get_rx_status(struct net_device_stats *stats,
> x->ipc_csum_error++;
> if (unlikely(rdes0 & RDES0_COLLISION)) {
> x->rx_collision++;
> - stats->collisions++;
> }
> if (unlikely(rdes0 & RDES0_CRC_ERROR)) {
> x->rx_crc_errors++;
> - stats->rx_crc_errors++;
> }
> ret = discard_frame;
> }
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> index 07ea5ab0a60ba..4ce5eaaae5135 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> @@ -77,6 +77,7 @@ struct stmmac_tx_queue {
> dma_addr_t dma_tx_phy;
> dma_addr_t tx_tail_addr;
> u32 mss;
> + struct stmmac_txq_stats txq_stats;
> };
>
> struct stmmac_rx_buffer {
> @@ -121,6 +122,7 @@ struct stmmac_rx_queue {
> unsigned int len;
> unsigned int error;
> } state;
> + struct stmmac_rxq_stats rxq_stats;
> };
>
> struct stmmac_channel {
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
> index 2ae73ab842d45..b7ac7abecdd35 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
> @@ -89,14 +89,6 @@ static const struct stmmac_stats stmmac_gstrings_stats[] = {
> /* Tx/Rx IRQ Events */
> STMMAC_STAT(rx_early_irq),
> STMMAC_STAT(threshold),
> - STMMAC_STAT(tx_pkt_n),
> - STMMAC_STAT(rx_pkt_n),
> - STMMAC_STAT(normal_irq_n),
> - STMMAC_STAT(rx_normal_irq_n),
> - STMMAC_STAT(napi_poll),
> - STMMAC_STAT(tx_normal_irq_n),
> - STMMAC_STAT(tx_clean),
> - STMMAC_STAT(tx_set_ic_bit),
> STMMAC_STAT(irq_receive_pmt_irq_n),
> /* MMC info */
> STMMAC_STAT(mmc_tx_irq_n),
> @@ -163,9 +155,6 @@ static const struct stmmac_stats stmmac_gstrings_stats[] = {
> STMMAC_STAT(mtl_rx_fifo_ctrl_active),
> STMMAC_STAT(mac_rx_frame_ctrl_fifo),
> STMMAC_STAT(mac_gmii_rx_proto_engine),
> - /* TSO */
> - STMMAC_STAT(tx_tso_frames),
> - STMMAC_STAT(tx_tso_nfrags),
> /* EST */
> STMMAC_STAT(mtl_est_cgce),
> STMMAC_STAT(mtl_est_hlbs),
> @@ -175,6 +164,23 @@ static const struct stmmac_stats stmmac_gstrings_stats[] = {
> };
> #define STMMAC_STATS_LEN ARRAY_SIZE(stmmac_gstrings_stats)
>
> +/* statistics collected in queue which will be summed up for all TX or RX
> + * queues, or summed up for both TX and RX queues(napi_poll, normal_irq_n).
> + */
> +static const char stmmac_qstats_string[][ETH_GSTRING_LEN] = {
> + "rx_pkt_n",
> + "rx_normal_irq_n",
> + "tx_pkt_n",
> + "tx_normal_irq_n",
> + "tx_clean",
> + "tx_set_ic_bit",
> + "tx_tso_frames",
> + "tx_tso_nfrags",
> + "normal_irq_n",
> + "napi_poll",
> +};
> +#define STMMAC_QSTATS ARRAY_SIZE(stmmac_qstats_string)
> +
> /* HW MAC Management counters (if supported) */
> #define STMMAC_MMC_STAT(m) \
> { #m, sizeof_field(struct stmmac_counters, m), \
> @@ -535,23 +541,44 @@ static void stmmac_get_per_qstats(struct stmmac_priv *priv, u64 *data)
> {
> u32 tx_cnt = priv->plat->tx_queues_to_use;
> u32 rx_cnt = priv->plat->rx_queues_to_use;
> + unsigned int start;
> int q, stat;
> + u64 *pos;
> char *p;
>
> + pos = data;
> for (q = 0; q < tx_cnt; q++) {
> - p = (char *)priv + offsetof(struct stmmac_priv,
> - xstats.txq_stats[q].tx_pkt_n);
> + struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[q];
> + struct stmmac_txq_stats snapshot;
> +
> + data = pos;
> + do {
> + start = u64_stats_fetch_begin(&tx_q->txq_stats.syncp);
> + snapshot = tx_q->txq_stats;
> + } while (u64_stats_fetch_retry(&tx_q->txq_stats.syncp, start));
> +
> + p = (char *)&snapshot + offsetof(struct stmmac_txq_stats, tx_pkt_n);
> for (stat = 0; stat < STMMAC_TXQ_STATS; stat++) {
> - *data++ = (*(unsigned long *)p);
> - p += sizeof(unsigned long);
> + *data++ += (*(u64 *)p);
> + p += sizeof(u64);
> }
> }
> +
> + pos = data;
> for (q = 0; q < rx_cnt; q++) {
> - p = (char *)priv + offsetof(struct stmmac_priv,
> - xstats.rxq_stats[q].rx_pkt_n);
> + struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[q];
> + struct stmmac_rxq_stats snapshot;
> +
> + data = pos;
> + do {
> + start = u64_stats_fetch_begin(&rx_q->rxq_stats.syncp);
> + snapshot = rx_q->rxq_stats;
> + } while (u64_stats_fetch_retry(&rx_q->rxq_stats.syncp, start));
> +
> + p = (char *)&snapshot + offsetof(struct stmmac_rxq_stats, rx_pkt_n);
> for (stat = 0; stat < STMMAC_RXQ_STATS; stat++) {
> - *data++ = (*(unsigned long *)p);
> - p += sizeof(unsigned long);
> + *data++ += (*(u64 *)p);
> + p += sizeof(u64);
> }
> }
> }
> @@ -562,8 +589,10 @@ static void stmmac_get_ethtool_stats(struct net_device *dev,
> struct stmmac_priv *priv = netdev_priv(dev);
> u32 rx_queues_count = priv->plat->rx_queues_to_use;
> u32 tx_queues_count = priv->plat->tx_queues_to_use;
> + u64 napi_poll = 0, normal_irq_n = 0;
> + int i, j = 0, pos, ret;
> unsigned long count;
> - int i, j = 0, ret;
> + unsigned int start;
>
> if (priv->dma_cap.asp) {
> for (i = 0; i < STMMAC_SAFETY_FEAT_SIZE; i++) {
> @@ -574,8 +603,7 @@ static void stmmac_get_ethtool_stats(struct net_device *dev,
> }
>
> /* Update the DMA HW counters for dwmac10/100 */
> - ret = stmmac_dma_diagnostic_fr(priv, &dev->stats, (void *) &priv->xstats,
> - priv->ioaddr);
> + ret = stmmac_dma_diagnostic_fr(priv, &priv->xstats, priv->ioaddr);
> if (ret) {
> /* If supported, for new GMAC chips expose the MMC counters */
> if (priv->dma_cap.rmon) {
> @@ -606,6 +634,48 @@ static void stmmac_get_ethtool_stats(struct net_device *dev,
> data[j++] = (stmmac_gstrings_stats[i].sizeof_stat ==
> sizeof(u64)) ? (*(u64 *)p) : (*(u32 *)p);
> }
> +
> + pos = j;
> + for (i = 0; i < rx_queues_count; i++) {
> + struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[i];
> + struct stmmac_rxq_stats snapshot;
> +
> + j = pos;
> + do {
> + start = u64_stats_fetch_begin(&rx_q->rxq_stats.syncp);
> + snapshot = rx_q->rxq_stats;
> + } while (u64_stats_fetch_retry(&rx_q->rxq_stats.syncp, start));
> +
> + data[j++] += snapshot.rx_pkt_n;
> + data[j++] += snapshot.rx_normal_irq_n;
> + normal_irq_n += snapshot.rx_normal_irq_n;
> + napi_poll += snapshot.napi_poll;
> + }
> +
> + pos = j;
> + for (i = 0; i < tx_queues_count; i++) {
> + struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[i];
> + struct stmmac_txq_stats snapshot;
> +
> + j = pos;
> + do {
> + start = u64_stats_fetch_begin(&tx_q->txq_stats.syncp);
> + snapshot = tx_q->txq_stats;
> + } while (u64_stats_fetch_retry(&tx_q->txq_stats.syncp, start));
> +
> + data[j++] += snapshot.tx_pkt_n;
> + data[j++] += snapshot.tx_normal_irq_n;
> + normal_irq_n += snapshot.tx_normal_irq_n;
> + data[j++] += snapshot.tx_clean;
> + data[j++] += snapshot.tx_set_ic_bit;
> + data[j++] += snapshot.tx_tso_frames;
> + data[j++] += snapshot.tx_tso_nfrags;
> + napi_poll += snapshot.napi_poll;
> + }
> + normal_irq_n += priv->xstats.rx_early_irq;
> + data[j++] = normal_irq_n;
> + data[j++] = napi_poll;
> +
> stmmac_get_per_qstats(priv, &data[j]);
> }
>
> @@ -618,7 +688,7 @@ static int stmmac_get_sset_count(struct net_device *netdev, int sset)
>
> switch (sset) {
> case ETH_SS_STATS:
> - len = STMMAC_STATS_LEN +
> + len = STMMAC_STATS_LEN + STMMAC_QSTATS +
> STMMAC_TXQ_STATS * tx_cnt +
> STMMAC_RXQ_STATS * rx_cnt;
>
> @@ -691,8 +761,11 @@ static void stmmac_get_strings(struct net_device *dev, u32 stringset, u8 *data)
> p += ETH_GSTRING_LEN;
> }
> for (i = 0; i < STMMAC_STATS_LEN; i++) {
> - memcpy(p, stmmac_gstrings_stats[i].stat_string,
> - ETH_GSTRING_LEN);
> + memcpy(p, stmmac_gstrings_stats[i].stat_string, ETH_GSTRING_LEN);
> + p += ETH_GSTRING_LEN;
> + }
> + for (i = 0; i < STMMAC_QSTATS; i++) {
> + memcpy(p, stmmac_qstats_string[i], ETH_GSTRING_LEN);
> p += ETH_GSTRING_LEN;
> }
> stmmac_get_qstats_string(priv, p);
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index 4727f7be4f86e..78d4143f5dea3 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -2432,6 +2432,8 @@ static bool stmmac_xdp_xmit_zc(struct stmmac_priv *priv, u32 queue, u32 budget)
> struct dma_desc *tx_desc = NULL;
> struct xdp_desc xdp_desc;
> bool work_done = true;
> + u32 tx_set_ic_bit = 0;
> + unsigned long flags;
>
> /* Avoids TX time-out as we are sharing with slow path */
> txq_trans_cond_update(nq);
> @@ -2492,7 +2494,7 @@ static bool stmmac_xdp_xmit_zc(struct stmmac_priv *priv, u32 queue, u32 budget)
> if (set_ic) {
> tx_q->tx_count_frames = 0;
> stmmac_set_tx_ic(priv, tx_desc);
> - priv->xstats.tx_set_ic_bit++;
> + tx_set_ic_bit++;
> }
>
> stmmac_prepare_tx_desc(priv, tx_desc, 1, xdp_desc.len,
> @@ -2504,6 +2506,9 @@ static bool stmmac_xdp_xmit_zc(struct stmmac_priv *priv, u32 queue, u32 budget)
> tx_q->cur_tx = STMMAC_GET_ENTRY(tx_q->cur_tx, priv->dma_conf.dma_tx_size);
> entry = tx_q->cur_tx;
> }
> + flags = u64_stats_update_begin_irqsave(&tx_q->txq_stats.syncp);
> + tx_q->txq_stats.tx_set_ic_bit += tx_set_ic_bit;
> + u64_stats_update_end_irqrestore(&tx_q->txq_stats.syncp, flags);
>
> if (tx_desc) {
> stmmac_flush_tx_descriptors(priv, queue);
> @@ -2545,11 +2550,11 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue)
> struct stmmac_tx_queue *tx_q = &priv->dma_conf.tx_queue[queue];
> unsigned int bytes_compl = 0, pkts_compl = 0;
> unsigned int entry, xmits = 0, count = 0;
> + u32 tx_packets = 0, tx_errors = 0;
> + unsigned long flags;
>
> __netif_tx_lock_bh(netdev_get_tx_queue(priv->dev, queue));
>
> - priv->xstats.tx_clean++;
> -
> tx_q->xsk_frames_done = 0;
>
> entry = tx_q->dirty_tx;
> @@ -2580,8 +2585,7 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue)
> else
> p = tx_q->dma_tx + entry;
>
> - status = stmmac_tx_status(priv, &priv->dev->stats,
> - &priv->xstats, p, priv->ioaddr);
> + status = stmmac_tx_status(priv, &priv->xstats, p, priv->ioaddr);
> /* Check if the descriptor is owned by the DMA */
> if (unlikely(status & tx_dma_own))
> break;
> @@ -2597,13 +2601,11 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue)
> if (likely(!(status & tx_not_ls))) {
> /* ... verify the status error condition */
> if (unlikely(status & tx_err)) {
> - priv->dev->stats.tx_errors++;
> + tx_errors++;
> if (unlikely(status & tx_err_bump_tc))
> stmmac_bump_dma_threshold(priv, queue);
> } else {
> - priv->dev->stats.tx_packets++;
> - priv->xstats.tx_pkt_n++;
> - priv->xstats.txq_stats[queue].tx_pkt_n++;
> + tx_packets++;
> }
> if (skb)
> stmmac_get_tx_hwtstamp(priv, p, skb);
> @@ -2707,6 +2709,14 @@ static int stmmac_tx_clean(struct stmmac_priv *priv, int budget, u32 queue)
> STMMAC_COAL_TIMER(priv->tx_coal_timer[queue]),
> HRTIMER_MODE_REL);
>
> + flags = u64_stats_update_begin_irqsave(&tx_q->txq_stats.syncp);
> + tx_q->txq_stats.tx_packets += tx_packets;
> + tx_q->txq_stats.tx_pkt_n += tx_packets;
> + tx_q->txq_stats.tx_clean++;
> + u64_stats_update_end_irqrestore(&tx_q->txq_stats.syncp, flags);
> +
> + priv->xstats.tx_errors += tx_errors;
> +
> __netif_tx_unlock_bh(netdev_get_tx_queue(priv->dev, queue));
>
> /* Combine decisions from TX clean and XSK TX */
> @@ -2734,7 +2744,7 @@ static void stmmac_tx_err(struct stmmac_priv *priv, u32 chan)
> tx_q->dma_tx_phy, chan);
> stmmac_start_tx_dma(priv, chan);
>
> - priv->dev->stats.tx_errors++;
> + priv->xstats.tx_errors++;
> netif_tx_wake_queue(netdev_get_tx_queue(priv->dev, chan));
> }
>
> @@ -4110,6 +4120,7 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
> struct stmmac_tx_queue *tx_q;
> bool has_vlan, set_ic;
> u8 proto_hdr_len, hdr;
> + unsigned long flags;
> u32 pay_len, mss;
> dma_addr_t des;
> int i;
> @@ -4258,7 +4269,6 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
>
> tx_q->tx_count_frames = 0;
> stmmac_set_tx_ic(priv, desc);
> - priv->xstats.tx_set_ic_bit++;
> }
>
> /* We've used all descriptors we need for this skb, however,
> @@ -4274,9 +4284,13 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
> netif_tx_stop_queue(netdev_get_tx_queue(priv->dev, queue));
> }
>
> - dev->stats.tx_bytes += skb->len;
> - priv->xstats.tx_tso_frames++;
> - priv->xstats.tx_tso_nfrags += nfrags;
> + flags = u64_stats_update_begin_irqsave(&tx_q->txq_stats.syncp);
> + tx_q->txq_stats.tx_bytes += skb->len;
> + tx_q->txq_stats.tx_tso_frames++;
> + tx_q->txq_stats.tx_tso_nfrags += nfrags;
> + if (set_ic)
> + tx_q->txq_stats.tx_set_ic_bit++;
> + u64_stats_update_end_irqrestore(&tx_q->txq_stats.syncp, flags);
>
> if (priv->sarc_type)
> stmmac_set_desc_sarc(priv, first, priv->sarc_type);
> @@ -4326,7 +4340,7 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
> dma_map_err:
> dev_err(priv->device, "Tx dma map failed\n");
> dev_kfree_skb(skb);
> - priv->dev->stats.tx_dropped++;
> + priv->xstats.tx_dropped++;
> return NETDEV_TX_OK;
> }
>
> @@ -4352,6 +4366,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
> struct stmmac_tx_queue *tx_q;
> bool has_vlan, set_ic;
> int entry, first_tx;
> + unsigned long flags;
> dma_addr_t des;
>
> tx_q = &priv->dma_conf.tx_queue[queue];
> @@ -4480,7 +4495,6 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
>
> tx_q->tx_count_frames = 0;
> stmmac_set_tx_ic(priv, desc);
> - priv->xstats.tx_set_ic_bit++;
> }
>
> /* We've used all descriptors we need for this skb, however,
> @@ -4507,7 +4521,11 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
> netif_tx_stop_queue(netdev_get_tx_queue(priv->dev, queue));
> }
>
> - dev->stats.tx_bytes += skb->len;
> + flags = u64_stats_update_begin_irqsave(&tx_q->txq_stats.syncp);
> + tx_q->txq_stats.tx_bytes += skb->len;
> + if (set_ic)
> + tx_q->txq_stats.tx_set_ic_bit++;
> + u64_stats_update_end_irqrestore(&tx_q->txq_stats.syncp, flags);
>
> if (priv->sarc_type)
> stmmac_set_desc_sarc(priv, first, priv->sarc_type);
> @@ -4569,7 +4587,7 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
> dma_map_err:
> netdev_err(priv->dev, "Tx DMA map failed\n");
> dev_kfree_skb(skb);
> - priv->dev->stats.tx_dropped++;
> + priv->xstats.tx_dropped++;
> return NETDEV_TX_OK;
> }
>
> @@ -4770,9 +4788,12 @@ static int stmmac_xdp_xmit_xdpf(struct stmmac_priv *priv, int queue,
> set_ic = false;
>
> if (set_ic) {
> + unsigned long flags;
> tx_q->tx_count_frames = 0;
> stmmac_set_tx_ic(priv, tx_desc);
> - priv->xstats.tx_set_ic_bit++;
> + flags = u64_stats_update_begin_irqsave(&tx_q->txq_stats.syncp);
> + tx_q->txq_stats.tx_set_ic_bit++;
> + u64_stats_update_end_irqrestore(&tx_q->txq_stats.syncp, flags);
> }
>
> stmmac_enable_dma_transmission(priv, priv->ioaddr);
> @@ -4917,16 +4938,18 @@ static void stmmac_dispatch_skb_zc(struct stmmac_priv *priv, u32 queue,
> struct dma_desc *p, struct dma_desc *np,
> struct xdp_buff *xdp)
> {
> + struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
> struct stmmac_channel *ch = &priv->channel[queue];
> unsigned int len = xdp->data_end - xdp->data;
> enum pkt_hash_types hash_type;
> int coe = priv->hw->rx_csum;
> + unsigned long flags;
> struct sk_buff *skb;
> u32 hash;
>
> skb = stmmac_construct_skb_zc(ch, xdp);
> if (!skb) {
> - priv->dev->stats.rx_dropped++;
> + priv->xstats.rx_dropped++;
> return;
> }
>
> @@ -4945,8 +4968,10 @@ static void stmmac_dispatch_skb_zc(struct stmmac_priv *priv, u32 queue,
> skb_record_rx_queue(skb, queue);
> napi_gro_receive(&ch->rxtx_napi, skb);
>
> - priv->dev->stats.rx_packets++;
> - priv->dev->stats.rx_bytes += len;
> + flags = u64_stats_update_begin_irqsave(&rx_q->rxq_stats.syncp);
> + rx_q->rxq_stats.rx_pkt_n++;
> + rx_q->rxq_stats.rx_bytes += len;
> + u64_stats_update_end_irqrestore(&rx_q->rxq_stats.syncp, flags);
> }
>
> static bool stmmac_rx_refill_zc(struct stmmac_priv *priv, u32 queue, u32 budget)
> @@ -5023,9 +5048,11 @@ static int stmmac_rx_zc(struct stmmac_priv *priv, int limit, u32 queue)
> unsigned int count = 0, error = 0, len = 0;
> int dirty = stmmac_rx_dirty(priv, queue);
> unsigned int next_entry = rx_q->cur_rx;
> + u32 rx_errors = 0, rx_dropped = 0;
> unsigned int desc_size;
> struct bpf_prog *prog;
> bool failure = false;
> + unsigned long flags;
> int xdp_status = 0;
> int status = 0;
>
> @@ -5081,8 +5108,7 @@ static int stmmac_rx_zc(struct stmmac_priv *priv, int limit, u32 queue)
> p = rx_q->dma_rx + entry;
>
> /* read the status of the incoming frame */
> - status = stmmac_rx_status(priv, &priv->dev->stats,
> - &priv->xstats, p);
> + status = stmmac_rx_status(priv, &priv->xstats, p);
> /* check if managed by the DMA otherwise go ahead */
> if (unlikely(status & dma_own))
> break;
> @@ -5104,8 +5130,7 @@ static int stmmac_rx_zc(struct stmmac_priv *priv, int limit, u32 queue)
> break;
>
> if (priv->extend_desc)
> - stmmac_rx_extended_status(priv, &priv->dev->stats,
> - &priv->xstats,
> + stmmac_rx_extended_status(priv, &priv->xstats,
> rx_q->dma_erx + entry);
> if (unlikely(status == discard_frame)) {
> xsk_buff_free(buf->xdp);
> @@ -5113,7 +5138,7 @@ static int stmmac_rx_zc(struct stmmac_priv *priv, int limit, u32 queue)
> dirty++;
> error = 1;
> if (!priv->hwts_rx_en)
> - priv->dev->stats.rx_errors++;
> + rx_errors++;
> }
>
> if (unlikely(error && (status & rx_not_ls)))
> @@ -5161,7 +5186,7 @@ static int stmmac_rx_zc(struct stmmac_priv *priv, int limit, u32 queue)
> break;
> case STMMAC_XDP_CONSUMED:
> xsk_buff_free(buf->xdp);
> - priv->dev->stats.rx_dropped++;
> + rx_dropped++;
> break;
> case STMMAC_XDP_TX:
> case STMMAC_XDP_REDIRECT:
> @@ -5182,8 +5207,12 @@ static int stmmac_rx_zc(struct stmmac_priv *priv, int limit, u32 queue)
>
> stmmac_finalize_xdp_rx(priv, xdp_status);
>
> - priv->xstats.rx_pkt_n += count;
> - priv->xstats.rxq_stats[queue].rx_pkt_n += count;
> + flags = u64_stats_update_begin_irqsave(&rx_q->rxq_stats.syncp);
> + rx_q->rxq_stats.rx_pkt_n += count;
> + u64_stats_update_end_irqrestore(&rx_q->rxq_stats.syncp, flags);
> +
> + priv->xstats.rx_dropped += rx_dropped;
> + priv->xstats.rx_errors += rx_errors;
>
> if (xsk_uses_need_wakeup(rx_q->xsk_pool)) {
> if (failure || stmmac_rx_dirty(priv, queue) > 0)
> @@ -5207,6 +5236,7 @@ static int stmmac_rx_zc(struct stmmac_priv *priv, int limit, u32 queue)
> */
> static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
> {
> + u32 rx_errors = 0, rx_dropped = 0, rx_bytes = 0, rx_packets = 0;
> struct stmmac_rx_queue *rx_q = &priv->dma_conf.rx_queue[queue];
> struct stmmac_channel *ch = &priv->channel[queue];
> unsigned int count = 0, error = 0, len = 0;
> @@ -5216,6 +5246,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
> unsigned int desc_size;
> struct sk_buff *skb = NULL;
> struct stmmac_xdp_buff ctx;
> + unsigned long flags;
> int xdp_status = 0;
> int buf_sz;
>
> @@ -5271,8 +5302,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
> p = rx_q->dma_rx + entry;
>
> /* read the status of the incoming frame */
> - status = stmmac_rx_status(priv, &priv->dev->stats,
> - &priv->xstats, p);
> + status = stmmac_rx_status(priv, &priv->xstats, p);
> /* check if managed by the DMA otherwise go ahead */
> if (unlikely(status & dma_own))
> break;
> @@ -5289,14 +5319,13 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
> prefetch(np);
>
> if (priv->extend_desc)
> - stmmac_rx_extended_status(priv, &priv->dev->stats,
> - &priv->xstats, rx_q->dma_erx + entry);
> + stmmac_rx_extended_status(priv, &priv->xstats, rx_q->dma_erx + entry);
> if (unlikely(status == discard_frame)) {
> page_pool_recycle_direct(rx_q->page_pool, buf->page);
> buf->page = NULL;
> error = 1;
> if (!priv->hwts_rx_en)
> - priv->dev->stats.rx_errors++;
> + rx_errors++;
> }
>
> if (unlikely(error && (status & rx_not_ls)))
> @@ -5364,7 +5393,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
> virt_to_head_page(ctx.xdp.data),
> sync_len, true);
> buf->page = NULL;
> - priv->dev->stats.rx_dropped++;
> + rx_dropped++;
>
> /* Clear skb as it was set as
> * status by XDP program.
> @@ -5393,7 +5422,7 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
>
> skb = napi_alloc_skb(&ch->rx_napi, buf1_len);
> if (!skb) {
> - priv->dev->stats.rx_dropped++;
> + rx_dropped++;
> count++;
> goto drain_data;
> }
> @@ -5453,8 +5482,8 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
> napi_gro_receive(&ch->rx_napi, skb);
> skb = NULL;
>
> - priv->dev->stats.rx_packets++;
> - priv->dev->stats.rx_bytes += len;
> + rx_packets++;
> + rx_bytes += len;
> count++;
> }
>
> @@ -5469,8 +5498,14 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit, u32 queue)
>
> stmmac_rx_refill(priv, queue);
>
> - priv->xstats.rx_pkt_n += count;
> - priv->xstats.rxq_stats[queue].rx_pkt_n += count;
> + flags = u64_stats_update_begin_irqsave(&rx_q->rxq_stats.syncp);
> + rx_q->rxq_stats.rx_packets += rx_packets;
> + rx_q->rxq_stats.rx_bytes += rx_bytes;
> + rx_q->rxq_stats.rx_pkt_n += count;
> + u64_stats_update_end_irqrestore(&rx_q->rxq_stats.syncp, flags);
> +
> + priv->xstats.rx_dropped += rx_dropped;
> + priv->xstats.rx_errors += rx_errors;
>
> return count;
> }
> @@ -5480,10 +5515,15 @@ static int stmmac_napi_poll_rx(struct napi_struct *napi, int budget)
> struct stmmac_channel *ch =
> container_of(napi, struct stmmac_channel, rx_napi);
> struct stmmac_priv *priv = ch->priv_data;
> + struct stmmac_rx_queue *rx_q;
> u32 chan = ch->index;
> + unsigned long flags;
> int work_done;
>
> - priv->xstats.napi_poll++;
> + rx_q = &priv->dma_conf.rx_queue[chan];
> + flags = u64_stats_update_begin_irqsave(&rx_q->rxq_stats.syncp);
> + rx_q->rxq_stats.napi_poll++;
> + u64_stats_update_end_irqrestore(&rx_q->rxq_stats.syncp, flags);
>
> work_done = stmmac_rx(priv, budget, chan);
> if (work_done < budget && napi_complete_done(napi, work_done)) {
> @@ -5502,10 +5542,15 @@ static int stmmac_napi_poll_tx(struct napi_struct *napi, int budget)
> struct stmmac_channel *ch =
> container_of(napi, struct stmmac_channel, tx_napi);
> struct stmmac_priv *priv = ch->priv_data;
> + struct stmmac_tx_queue *tx_q;
> u32 chan = ch->index;
> + unsigned long flags;
> int work_done;
>
> - priv->xstats.napi_poll++;
> + tx_q = &priv->dma_conf.tx_queue[chan];
> + flags = u64_stats_update_begin_irqsave(&tx_q->txq_stats.syncp);
> + tx_q->txq_stats.napi_poll++;
> + u64_stats_update_end_irqrestore(&tx_q->txq_stats.syncp, flags);
>
> work_done = stmmac_tx_clean(priv, budget, chan);
> work_done = min(work_done, budget);
> @@ -5527,9 +5572,20 @@ static int stmmac_napi_poll_rxtx(struct napi_struct *napi, int budget)
> container_of(napi, struct stmmac_channel, rxtx_napi);
> struct stmmac_priv *priv = ch->priv_data;
> int rx_done, tx_done, rxtx_done;
> + struct stmmac_rx_queue *rx_q;
> + struct stmmac_tx_queue *tx_q;
> u32 chan = ch->index;
> + unsigned long flags;
> +
> + rx_q = &priv->dma_conf.rx_queue[chan];
> + flags = u64_stats_update_begin_irqsave(&rx_q->rxq_stats.syncp);
> + rx_q->rxq_stats.napi_poll++;
> + u64_stats_update_end_irqrestore(&rx_q->rxq_stats.syncp, flags);
>
> - priv->xstats.napi_poll++;
> + tx_q = &priv->dma_conf.tx_queue[chan];
> + flags = u64_stats_update_begin_irqsave(&tx_q->txq_stats.syncp);
> + tx_q->txq_stats.napi_poll++;
> + u64_stats_update_end_irqrestore(&tx_q->txq_stats.syncp, flags);
>
> tx_done = stmmac_tx_clean(priv, budget, chan);
> tx_done = min(tx_done, budget);
> @@ -6788,6 +6844,56 @@ int stmmac_xsk_wakeup(struct net_device *dev, u32 queue, u32 flags)
> return 0;
> }
>
> +static void stmmac_get_stats64(struct net_device *dev, struct rtnl_link_stats64 *stats)
> +{
> + struct stmmac_priv *priv = netdev_priv(dev);
> + u32 tx_cnt = priv->plat->tx_queues_to_use;
> + u32 rx_cnt = priv->plat->rx_queues_to_use;
> + unsigned int start;
> + int q;
> +
> + for (q = 0; q < tx_cnt; q++) {
> + struct stmmac_txq_stats *txq_stats = &priv->dma_conf.tx_queue[q].txq_stats;
> + u64 tx_packets;
> + u64 tx_bytes;
> +
> + do {
> + start = u64_stats_fetch_begin(&txq_stats->syncp);
> + tx_packets = txq_stats->tx_packets;
> + tx_bytes = txq_stats->tx_bytes;
> + } while (u64_stats_fetch_retry(&txq_stats->syncp, start));
> +
> + stats->tx_packets += tx_packets;
> + stats->tx_bytes += tx_bytes;
> + }
> +
> + for (q = 0; q < rx_cnt; q++) {
> + struct stmmac_rxq_stats *rxq_stats = &priv->dma_conf.rx_queue[q].rxq_stats;
> + u64 rx_packets;
> + u64 rx_bytes;
> +
> + do {
> + start = u64_stats_fetch_begin(&rxq_stats->syncp);
> + rx_packets = rxq_stats->rx_packets;
> + rx_bytes = rxq_stats->rx_bytes;
> + } while (u64_stats_fetch_retry(&rxq_stats->syncp, start));
> +
> + stats->rx_packets += rx_packets;
> + stats->rx_bytes += rx_bytes;
> + }
> +
> + stats->rx_dropped = priv->xstats.rx_dropped;
> + stats->rx_errors = priv->xstats.rx_errors;
> + stats->tx_dropped = priv->xstats.tx_dropped;
> + stats->tx_errors = priv->xstats.tx_errors;
> + stats->tx_carrier_errors = priv->xstats.tx_losscarrier + priv->xstats.tx_carrier;
> + stats->collisions = priv->xstats.tx_collision + priv->xstats.rx_collision;
> + stats->rx_length_errors = priv->xstats.rx_length;
> + stats->rx_crc_errors = priv->xstats.rx_crc_errors;
> + stats->rx_over_errors = priv->xstats.rx_overflow_cntr;
> + stats->rx_missed_errors = priv->xstats.rx_missed_cntr;
> +}
> +
> static const struct net_device_ops stmmac_netdev_ops = {
> .ndo_open = stmmac_open,
> .ndo_start_xmit = stmmac_xmit,
> @@ -6798,6 +6904,7 @@ static const struct net_device_ops stmmac_netdev_ops = {
> .ndo_set_rx_mode = stmmac_set_rx_mode,
> .ndo_tx_timeout = stmmac_tx_timeout,
> .ndo_eth_ioctl = stmmac_ioctl,
> + .ndo_get_stats64 = stmmac_get_stats64,
> .ndo_setup_tc = stmmac_setup_tc,
> .ndo_select_queue = stmmac_select_queue,
> #ifdef CONFIG_NET_POLL_CONTROLLER
> @@ -7160,6 +7267,11 @@ int stmmac_dvr_probe(struct device *device,
> priv->device = device;
> priv->dev = ndev;
>
> + for (i = 0; i < MTL_MAX_RX_QUEUES; i++)
> + u64_stats_init(&priv->dma_conf.rx_queue[i].rxq_stats.syncp);
> + for (i = 0; i < MTL_MAX_TX_QUEUES; i++)
> + u64_stats_init(&priv->dma_conf.tx_queue[i].txq_stats.syncp);
> +
> stmmac_set_ethtool_ops(ndev);
> priv->pause = pause;
> priv->plat = plat_dat;
> --
> 2.40.1
>
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