diff options
| author |   Lendacky, Thomas <Thomas.Lendacky@amd.com> | 2015-09-30 08:53:10 -0500 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2015-10-05 03:23:26 -0700 |
| commit | 72c9ac4e1f4faf1f4e7252319ab8af2517891ae5 (patch) | |
| tree | 5d3690dc1ba6f970ebc84c9f4cdc6cf6fd208df6 | |
| parent | amd-xgbe: Simplify calculation and setting of queue fifos (diff) | |
| download | linux-dev-72c9ac4e1f4faf1f4e7252319ab8af2517891ae5.tar.xz linux-dev-72c9ac4e1f4faf1f4e7252319ab8af2517891ae5.zip | |
amd-xgbe: Add receive buffer unavailable statistic
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>
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe-drv.c | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe.h | 1 |
3 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c index aae9d5ecd182..24212d256a01 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-drv.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-drv.c @@ -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); diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c b/drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c index 95b63730aa58..204fb3afb182 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c +++ b/drivers/net/ethernet/amd/xgbe/xgbe-ethtool.c @@ -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) diff --git a/drivers/net/ethernet/amd/xgbe/xgbe.h b/drivers/net/ethernet/amd/xgbe/xgbe.h index 5f9a1ab1e387..a5f5a7869609 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe.h @@ -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 { |