Commit af9bf701 authored by Vijayakannan Ayyathurai's avatar Vijayakannan Ayyathurai Committed by David S. Miller
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net: stmmac: add ethtool per-queue irq statistic support 



Adding ethtool per-queue statistics support to show number of interrupts
generated at DMA tx and DMA rx. All the counters are incremented at
dwmac4_dma_interrupt function.

Signed-off-by: default avatarVijayakannan Ayyathurai <vijayakannan.ayyathurai@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 68e9c5de

drivers/net/ethernet/stmicro/stmmac/common.h

+2 −0
Original line number Diff line number Diff line
@@ -60,10 +60,12 @@ 


struct stmmac_txq_stats {

	unsigned long tx_pkt_n;

	unsigned long tx_normal_irq_n;

};



struct stmmac_rxq_stats {

	unsigned long rx_pkt_n;

	unsigned long rx_normal_irq_n;

};



/* Extra statistic and debug information exposed by ethtool */

drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c

+2 −0
Original line number Diff line number Diff line
@@ -170,10 +170,12 @@ int dwmac4_dma_interrupt(void __iomem *ioaddr, 
		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++;

		ret |= handle_rx;

	}

	if (likely(intr_status & DMA_CHAN_STATUS_TI)) {

		x->tx_normal_irq_n++;

		x->txq_stats[chan].tx_normal_irq_n++;

		ret |= handle_tx;

	}

	if (unlikely(intr_status & DMA_CHAN_STATUS_TBU))

drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c

+2 −0
Original line number Diff line number Diff line
@@ -263,11 +263,13 @@ static const struct stmmac_stats stmmac_mmc[] = { 


static const char stmmac_qstats_tx_string[][ETH_GSTRING_LEN] = {

	"tx_pkt_n",

	"tx_irq_n",

#define STMMAC_TXQ_STATS ARRAY_SIZE(stmmac_qstats_tx_string)

};



static const char stmmac_qstats_rx_string[][ETH_GSTRING_LEN] = {

	"rx_pkt_n",

	"rx_irq_n",

#define STMMAC_RXQ_STATS ARRAY_SIZE(stmmac_qstats_rx_string)

};