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| author | Govindarajulu Varadarajan <_govind@gmx.com> | 2014-07-02 15:42:15 +0530 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-07-07 21:33:46 -0700 |
| commit | a16a3361927f75e6032df110920c83ca6c5045d3 (patch) | |
| tree | fa137120fad58594d535c208aebb1d15fd67a240 /drivers/net/ethernet/cisco/enic/enic_ethtool.c | |
| parent | e721f87d806f2a959d6a530be18dabee6097aa79 (diff) | |
| download | blackbird-op-linux-a16a3361927f75e6032df110920c83ca6c5045d3.tar.gz blackbird-op-linux-a16a3361927f75e6032df110920c83ca6c5045d3.zip | |
enic: fix return values in enic_set_coalesce
enic_set_coalesce() has two problems.
* It should return -EINVAL and not -EOPNOTSUPP for invalid coalesce values.
* In case of MSIX, enic_set_coalesce return error after applying requested
coalescing setting partially. We should either apply all the setting requeste
and return success or apply non and return error.
* This patch also simplifies the algo.
This was introduced by
'7c2ce6e60f703 enic: Add support for adaptive interrupt coalescing'
These changes were suggested by Ben Hutchings here
http://www.spinics.net/lists/netdev/msg283972.html
Also change enic driver version.
Signed-off-by: Govindarajulu Varadarajan <_govind@gmx.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/cisco/enic/enic_ethtool.c')
| -rw-r--r-- | drivers/net/ethernet/cisco/enic/enic_ethtool.c | 27 |
1 files changed, 11 insertions, 16 deletions
diff --git a/drivers/net/ethernet/cisco/enic/enic_ethtool.c b/drivers/net/ethernet/cisco/enic/enic_ethtool.c index 2e50b5489d20..c75f84b42751 100644 --- a/drivers/net/ethernet/cisco/enic/enic_ethtool.c +++ b/drivers/net/ethernet/cisco/enic/enic_ethtool.c @@ -231,7 +231,7 @@ static int enic_set_coalesce(struct net_device *netdev, if (ecmd->use_adaptive_rx_coalesce || ecmd->rx_coalesce_usecs_low || ecmd->rx_coalesce_usecs_high) - return -EOPNOTSUPP; + return -EINVAL; intr = enic_legacy_io_intr(); vnic_intr_coalescing_timer_set(&enic->intr[intr], @@ -243,34 +243,29 @@ static int enic_set_coalesce(struct net_device *netdev, if (ecmd->use_adaptive_rx_coalesce || ecmd->rx_coalesce_usecs_low || ecmd->rx_coalesce_usecs_high) - return -EOPNOTSUPP; + return -EINVAL; vnic_intr_coalescing_timer_set(&enic->intr[0], tx_coalesce_usecs); break; case VNIC_DEV_INTR_MODE_MSIX: + if (ecmd->rx_coalesce_usecs_high && + (rx_coalesce_usecs_high < + rx_coalesce_usecs_low + ENIC_AIC_LARGE_PKT_DIFF)) + return -EINVAL; + for (i = 0; i < enic->wq_count; i++) { intr = enic_msix_wq_intr(enic, i); vnic_intr_coalescing_timer_set(&enic->intr[intr], tx_coalesce_usecs); } - if (rxcoal->use_adaptive_rx_coalesce) { - if (!ecmd->use_adaptive_rx_coalesce) { - rxcoal->use_adaptive_rx_coalesce = 0; - enic_intr_coal_set_rx(enic, rx_coalesce_usecs); - } - } else { - if (ecmd->use_adaptive_rx_coalesce) - rxcoal->use_adaptive_rx_coalesce = 1; - else - enic_intr_coal_set_rx(enic, rx_coalesce_usecs); - } + rxcoal->use_adaptive_rx_coalesce = + !!ecmd->use_adaptive_rx_coalesce; + if (!rxcoal->use_adaptive_rx_coalesce) + enic_intr_coal_set_rx(enic, rx_coalesce_usecs); if (ecmd->rx_coalesce_usecs_high) { - if (rx_coalesce_usecs_high < - (rx_coalesce_usecs_low + ENIC_AIC_LARGE_PKT_DIFF)) - return -EINVAL; rxcoal->range_end = rx_coalesce_usecs_high; rxcoal->small_pkt_range_start = rx_coalesce_usecs_low; rxcoal->large_pkt_range_start = rx_coalesce_usecs_low + |
