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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: Vijayakannan Ayyathurai <vijayakannan.ayyathurai@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vijayakannan Ayyathurai 2021-08-16 14:16:00 +08:00 committed by David S. Miller
parent 68e9c5dee1
commit af9bf70154
3 changed files with 6 additions and 0 deletions
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2
drivers/net/ethernet/stmicro/stmmac/common.h
View File

@ -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 */

2
drivers/net/ethernet/stmicro/stmmac/dwmac4_lib.c
View File

@ -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))

2
drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
View File

@ -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)
};