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net: bcmgenet: log RX buffer allocation and RX/TX dma failures

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To help troubleshoot heavy memory pressure conditions, add a bunch of
statistics counter to log RX buffer allocation and RX/TX DMA mapping
failures. These are reported like any other counters through the ethtool
stats interface.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli
2014-11-19 10:29:56 -08:00
committed by David S. Miller
parent 60b4ea1781
commit 44c8bc3ce3
2 changed files with 12 additions and 1 deletions
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3
drivers/net/ethernet/broadcom/genet/bcmgenet.h
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@@ -143,6 +143,9 @@ struct bcmgenet_mib_counters {
u32 rbuf_ovflow_cnt;
u32 rbuf_err_cnt;
u32 mdf_err_cnt;
u32 alloc_rx_buff_failed;
u32 rx_dma_failed;
u32 tx_dma_failed;
};
#define UMAC_HD_BKP_CTRL 0x004