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authorDon Skidmore <donald.c.skidmore@intel.com>2009-08-11 09:18:14 -0400
committerDavid S. Miller <davem@davemloft.net>2009-08-13 19:33:02 -0400
commit237057ad3fe5644fa471be474a160de2fc2e5870 (patch)
treec43d3273ff97a2151fba336667b36bca2eb6b368 /drivers/net/ixgbe
parent993e6f2fd487e2acddd711f79cf48f3420731382 (diff)
ixgbe: fix issues setting rx-usecs with legacy interrupts
Currently setting rx-usecs when the interface is in legacy interrupt mode it is not immediate. We were only setting EITR for each MSIx vector and since this count would be zero for legacy mode it wasn't set until after a reset. This patch corrects that by checking what mode we are in and then setting EITR accordingly. Signed-off-by: Don Skidmore <donald.skidmore@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ixgbe')
-rw-r--r--drivers/net/ixgbe/ixgbe_ethtool.c27
1 files changed, 19 insertions, 8 deletions
diff --git a/drivers/net/ixgbe/ixgbe_ethtool.c b/drivers/net/ixgbe/ixgbe_ethtool.c
index 79144e950a3..dff8dfac7ed 100644
--- a/drivers/net/ixgbe/ixgbe_ethtool.c
+++ b/drivers/net/ixgbe/ixgbe_ethtool.c
@@ -1948,6 +1948,7 @@ static int ixgbe_set_coalesce(struct net_device *netdev,
1948 struct ethtool_coalesce *ec) 1948 struct ethtool_coalesce *ec)
1949{ 1949{
1950 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1950 struct ixgbe_adapter *adapter = netdev_priv(netdev);
1951 struct ixgbe_q_vector *q_vector;
1951 int i; 1952 int i;
1952 1953
1953 if (ec->tx_max_coalesced_frames_irq) 1954 if (ec->tx_max_coalesced_frames_irq)
@@ -1982,14 +1983,24 @@ static int ixgbe_set_coalesce(struct net_device *netdev,
1982 adapter->itr_setting = 0; 1983 adapter->itr_setting = 0;
1983 } 1984 }
1984 1985
1985 for (i = 0; i < adapter->num_msix_vectors - NON_Q_VECTORS; i++) { 1986 /* MSI/MSIx Interrupt Mode */
1986 struct ixgbe_q_vector *q_vector = adapter->q_vector[i]; 1987 if (adapter->flags &
1987 if (q_vector->txr_count && !q_vector->rxr_count) 1988 (IXGBE_FLAG_MSIX_ENABLED | IXGBE_FLAG_MSI_ENABLED)) {
1988 /* tx vector gets half the rate */ 1989 int num_vectors = adapter->num_msix_vectors - NON_Q_VECTORS;
1989 q_vector->eitr = (adapter->eitr_param >> 1); 1990 for (i = 0; i < num_vectors; i++) {
1990 else 1991 q_vector = adapter->q_vector[i];
1991 /* rx only or mixed */ 1992 if (q_vector->txr_count && !q_vector->rxr_count)
1992 q_vector->eitr = adapter->eitr_param; 1993 /* tx vector gets half the rate */
1994 q_vector->eitr = (adapter->eitr_param >> 1);
1995 else
1996 /* rx only or mixed */
1997 q_vector->eitr = adapter->eitr_param;
1998 ixgbe_write_eitr(q_vector);
1999 }
2000 /* Legacy Interrupt Mode */
2001 } else {
2002 q_vector = adapter->q_vector[0];
2003 q_vector->eitr = adapter->eitr_param;
1993 ixgbe_write_eitr(q_vector); 2004 ixgbe_write_eitr(q_vector);
1994 } 2005 }
1995 2006