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bonding: ratelimit failed speed/duplex update warning
bond_miimon_commit() handles the UP transition for each slave of a bond
in the case of MII. It is triggered 10 times per second for the default
MII Polling interval of 100ms. For device drivers that do not implement
__ethtool_get_link_ksettings() the call to bond_update_speed_duplex()
fails persistently while the MII status could remain UP. That is, in
this and other cases where the speed/duplex update keeps failing over a
longer period of time while the MII state is UP, a warning is printed
every MII polling interval.
To address these excessive warnings net_ratelimit() should be used.
Printing a warning once would not be sufficient since the call to
bond_update_speed_duplex() could recover to succeed and fail again
later. In that case there would be no new indication what went wrong.
Fixes: b5bf0f5b16
(bonding: correctly update link status during mii-commit phase)
Signed-off-by: Andreas Born <futur.andy@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
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@ -2144,9 +2144,10 @@ static void bond_miimon_commit(struct bonding *bond)
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if (bond_update_speed_duplex(slave) &&
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bond_needs_speed_duplex(bond)) {
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slave->link = BOND_LINK_DOWN;
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netdev_warn(bond->dev,
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"failed to get link speed/duplex for %s\n",
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slave->dev->name);
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if (net_ratelimit())
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netdev_warn(bond->dev,
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"failed to get link speed/duplex for %s\n",
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slave->dev->name);
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continue;
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}
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bond_set_slave_link_state(slave, BOND_LINK_UP,
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