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| author | Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> | 2009-07-30 12:26:00 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-07-30 19:00:30 -0700 |
| commit | 0a924578bc4a2823a95c151f56975c71f5c156bb (patch) | |
| tree | 58af9e5303f5c5d552541290a5194b0d743cd1bd /drivers/net/ixgbe/ixgbe.h | |
| parent | 0c19d6af9253f19b41821c29b9c49c2214f19425 (diff) | |
| download | op-kernel-dev-0a924578bc4a2823a95c151f56975c71f5c156bb.zip op-kernel-dev-0a924578bc4a2823a95c151f56975c71f5c156bb.tar.gz | |
ixgbe: Fix RSC completion delay causing Rx interrupts to stop
When a user disables interrupt throttling with ethtool on 82599 devices,
the interrupt timer may not be re-enabled if hardware RSC is running. The
RSC completions in hardware don't complete before the next ITR event tries
to fire, so the ITR timer never gets re-armed. This patch increases the
amount of time between interrupts when throttling is disabled (rx-usecs =
0) when the hardware RSC deature is enabled.
Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@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/ixgbe.h')
| -rw-r--r-- | drivers/net/ixgbe/ixgbe.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h index 1b12c7b..e11d83d 100644 --- a/drivers/net/ixgbe/ixgbe.h +++ b/drivers/net/ixgbe/ixgbe.h @@ -96,6 +96,8 @@ #define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000 #define IXGBE_TX_FLAGS_VLAN_SHIFT 16 +#define IXGBE_MAX_RSC_INT_RATE 162760 + /* wrapper around a pointer to a socket buffer, * so a DMA handle can be stored along with the buffer */ struct ixgbe_tx_buffer { |
