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net: mvpp2: print rx error with rate-limit 

Prevent flood of RX error prints during heavy traffic with weak signal
in link by checking net_ratelimit() before using netdev_err().

Signed-off-by: Yan Markman <ymarkman@marvell.com>
[Antoine: small rework, commit message]
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yan Markman 2018-05-17 10:34:27 +02:00 committed by David S. Miller
parent 5b0ab2f41d
commit 934e0f8330
1 changed files with 8 additions and 6 deletions
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14
drivers/net/ethernet/marvell/mvpp2.c
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@ -6381,21 +6381,23 @@ static void mvpp2_rx_error(struct mvpp2_port *port,
{
u32 status = mvpp2_rxdesc_status_get(port, rx_desc);
size_t sz = mvpp2_rxdesc_size_get(port, rx_desc);
char *err_str = NULL;
switch (status & MVPP2_RXD_ERR_CODE_MASK) {
case MVPP2_RXD_ERR_CRC:
netdev_err(port->dev, "bad rx status %08x (crc error), size=%zu\n",
status, sz);
err_str = "crc";
break;
case MVPP2_RXD_ERR_OVERRUN:
netdev_err(port->dev, "bad rx status %08x (overrun error), size=%zu\n",
status, sz);
err_str = "overrun";
break;
case MVPP2_RXD_ERR_RESOURCE:
netdev_err(port->dev, "bad rx status %08x (resource error), size=%zu\n",
status, sz);
err_str = "resource";
break;
}
if (err_str && net_ratelimit())
netdev_err(port->dev,
"bad rx status %08x (%s error), size=%zu\n",
status, err_str, sz);
}
/* Handle RX checksum offload */