AuxXxilium/linux_dsm_epyc7002
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net, thunderx: Add TX timeout and RX buffer alloc failure stats.

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When system is low on atomic memory, too many error messages are logged.
Since this is not a total failure but a simple switch to non-atomic allocation
better to have a stat.

Also add a stat for reset, kicked due to transmit watchdog timeout.

Signed-off-by: Thanneeru Srinivasulu <tsrinivasulu@caviumnetworks.com>
Signed-off-by: Sunil Goutham <sgoutham@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thanneeru Srinivasulu 2016-02-11 21:50:21 +05:30 committed by David S. Miller
parent 65411adba3
commit a05d484590
4 changed files with 7 additions and 2 deletions
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3
drivers/net/ethernet/cavium/thunder/nic.h
View File

@ -248,10 +248,13 @@ struct nicvf_drv_stats {
u64 rx_frames_jumbo;
u64 rx_drops;
u64 rcv_buffer_alloc_failures;
/* Tx */
u64 tx_frames_ok;
u64 tx_drops;
u64 tx_tso;
u64 tx_timeout;
u64 txq_stop;
u64 txq_wake;
};

2
drivers/net/ethernet/cavium/thunder/nicvf_ethtool.c
View File

@ -89,9 +89,11 @@ static const struct nicvf_stat nicvf_drv_stats[] = {
NICVF_DRV_STAT(rx_frames_1518),
NICVF_DRV_STAT(rx_frames_jumbo),
NICVF_DRV_STAT(rx_drops),
NICVF_DRV_STAT(rcv_buffer_alloc_failures),
NICVF_DRV_STAT(tx_frames_ok),
NICVF_DRV_STAT(tx_tso),
NICVF_DRV_STAT(tx_drops),
NICVF_DRV_STAT(tx_timeout),
NICVF_DRV_STAT(txq_stop),
NICVF_DRV_STAT(txq_wake),
};

1
drivers/net/ethernet/cavium/thunder/nicvf_main.c
View File

@ -1394,6 +1394,7 @@ static void nicvf_tx_timeout(struct net_device *dev)
netdev_warn(dev, "%s: Transmit timed out, resetting\n",
dev->name);
nic->drv_stats.tx_timeout++;
schedule_work(&nic->reset_task);
}

3
drivers/net/ethernet/cavium/thunder/nicvf_queues.c
View File

@ -96,8 +96,7 @@ static inline int nicvf_alloc_rcv_buffer(struct nicvf *nic, gfp_t gfp,
nic->rb_page = alloc_pages(gfp | __GFP_COMP | __GFP_NOWARN,
order);
if (!nic->rb_page) {
netdev_err(nic->netdev,
"Failed to allocate new rcv buffer\n");
nic->drv_stats.rcv_buffer_alloc_failures++;
return -ENOMEM;
}
nic->rb_page_offset = 0;