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| author | Alexander Duyck <alexander.h.duyck@intel.com> | 2008-07-09 00:14:44 +0200 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-07-11 07:20:33 +0200 |
| commit | 6eb5a7f1dbd56883680290f6a0bd2d8d15f8ff58 (patch) | |
| tree | ee4b0be39dba02863ae3e260b2b8c210e7535929 /drivers/net/igb/igb_ethtool.c | |
| parent | igb: unused variable warning in igb remove (diff) | |
| download | linux-6eb5a7f1dbd56883680290f6a0bd2d8d15f8ff58.tar.xz linux-6eb5a7f1dbd56883680290f6a0bd2d8d15f8ff58.zip | |
igb: Improve multiqueue AIM support
Improve multiqueue performance
Change itr_val to reflect ITR timer value instead of ints/sec
Cleaned up AIM algorithms in general
Based on work by Mitch Williams
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/net/igb/igb_ethtool.c')
| -rw-r--r-- | drivers/net/igb/igb_ethtool.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/net/igb/igb_ethtool.c b/drivers/net/igb/igb_ethtool.c index 7db183093768..11aee1309951 100644 --- a/drivers/net/igb/igb_ethtool.c +++ b/drivers/net/igb/igb_ethtool.c @@ -1861,6 +1861,8 @@ static int igb_set_coalesce(struct net_device *netdev, struct ethtool_coalesce *ec) { struct igb_adapter *adapter = netdev_priv(netdev); + struct e1000_hw *hw = &adapter->hw; + int i; if ((ec->rx_coalesce_usecs > IGB_MAX_ITR_USECS) || ((ec->rx_coalesce_usecs > 3) && @@ -1869,13 +1871,16 @@ static int igb_set_coalesce(struct net_device *netdev, return -EINVAL; /* convert to rate of irq's per second */ - if (ec->rx_coalesce_usecs <= 3) + if (ec->rx_coalesce_usecs && ec->rx_coalesce_usecs <= 3) { adapter->itr_setting = ec->rx_coalesce_usecs; - else - adapter->itr_setting = (1000000 / ec->rx_coalesce_usecs); + adapter->itr = IGB_START_ITR; + } else { + adapter->itr_setting = ec->rx_coalesce_usecs << 2; + adapter->itr = adapter->itr_setting; + } - if (netif_running(netdev)) - igb_reinit_locked(adapter); + for (i = 0; i < adapter->num_rx_queues; i++) + wr32(adapter->rx_ring[i].itr_register, adapter->itr); return 0; } @@ -1888,7 +1893,7 @@ static int igb_get_coalesce(struct net_device *netdev, if (adapter->itr_setting <= 3) ec->rx_coalesce_usecs = adapter->itr_setting; else - ec->rx_coalesce_usecs = 1000000 / adapter->itr_setting; + ec->rx_coalesce_usecs = adapter->itr_setting >> 2; return 0; } |