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igb: report unsupported ethtool settings in set_coalesce

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There are many settings possible using ethtool -C/--coalesce, but not
all of them are supported in igb. Report failure when an unsupported
option is set.

Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Todd Fujinaka 2015-06-04 14:26:56 -07:00 committed by Jeff Kirsher
parent 7faae96421
commit 0c5bbeb883
1 changed files with 21 additions and 0 deletions
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21
drivers/net/ethernet/intel/igb/igb_ethtool.c
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@ -2159,6 +2159,27 @@ static int igb_set_coalesce(struct net_device *netdev,
struct igb_adapter *adapter = netdev_priv(netdev);
int i;
if (ec->rx_max_coalesced_frames ||
ec->rx_coalesce_usecs_irq ||
ec->rx_max_coalesced_frames_irq ||
ec->tx_max_coalesced_frames ||
ec->tx_coalesce_usecs_irq ||
ec->stats_block_coalesce_usecs ||
ec->use_adaptive_rx_coalesce ||
ec->use_adaptive_tx_coalesce ||
ec->pkt_rate_low ||
ec->rx_coalesce_usecs_low ||
ec->rx_max_coalesced_frames_low ||
ec->tx_coalesce_usecs_low ||
ec->tx_max_coalesced_frames_low ||
ec->pkt_rate_high ||
ec->rx_coalesce_usecs_high ||
ec->rx_max_coalesced_frames_high ||
ec->tx_coalesce_usecs_high ||
ec->tx_max_coalesced_frames_high ||
ec->rate_sample_interval)
return -ENOTSUPP;
if ((ec->rx_coalesce_usecs > IGB_MAX_ITR_USECS) ||
((ec->rx_coalesce_usecs > 3) &&
(ec->rx_coalesce_usecs < IGB_MIN_ITR_USECS)) ||