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amd-xgbe: Add receive buffer unavailable statistic

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Add a statistic that tracks how many times an interrupt is generated for
a receive buffer not being available to the hardware which prevents the
hardware from being able to DMA the received data.

Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lendacky, Thomas 2015-09-30 08:53:10 -05:00 committed by David S. Miller
parent 9c439e4b73
commit 72c9ac4e1f
3 changed files with 5 additions and 0 deletions
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3
drivers/net/ethernet/amd/xgbe/xgbe-drv.c
View File

@ -360,6 +360,9 @@ static irqreturn_t xgbe_isr(int irq, void *data)
}
}
if (XGMAC_GET_BITS(dma_ch_isr, DMA_CH_SR, RBU))
pdata->ext_stats.rx_buffer_unavailable++;
/* Restart the device on a Fatal Bus Error */
if (XGMAC_GET_BITS(dma_ch_isr, DMA_CH_SR, FBE))
schedule_work(&pdata->restart_work);

1
drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c
View File

@ -179,6 +179,7 @@ static const struct xgbe_stats xgbe_gstring_stats[] = {
XGMAC_MMC_STAT("rx_watchdog_errors", rxwatchdogerror),
XGMAC_MMC_STAT("rx_pause_frames", rxpauseframes),
XGMAC_EXT_STAT("rx_split_header_packets", rx_split_header_packets),
XGMAC_EXT_STAT("rx_buffer_unavailable", rx_buffer_unavailable),
};
#define XGBE_STATS_COUNT ARRAY_SIZE(xgbe_gstring_stats)

1
drivers/net/ethernet/amd/xgbe/xgbe.h
View File

@ -582,6 +582,7 @@ struct xgbe_mmc_stats {
struct xgbe_ext_stats {
u64 tx_tso_packets;
u64 rx_split_header_packets;
u64 rx_buffer_unavailable;
};
struct xgbe_hw_if {