diff options
Diffstat (limited to 'drivers/net/e1000e/netdev.c')
| -rw-r--r-- | drivers/net/e1000e/netdev.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c index 478c34a47d18..c5f65a29865a 100644 --- a/drivers/net/e1000e/netdev.c +++ b/drivers/net/e1000e/netdev.c @@ -52,7 +52,7 @@ #include "e1000.h" -#define DRV_VERSION "1.0.2-k2" +#define DRV_VERSION "1.0.2-k4" char e1000e_driver_name[] = "e1000e"; const char e1000e_driver_version[] = DRV_VERSION; @@ -4070,6 +4070,22 @@ link_up: } } + /* Simple mode for Interrupt Throttle Rate (ITR) */ + if (adapter->itr_setting == 4) { + /* + * Symmetric Tx/Rx gets a reduced ITR=2000; + * Total asymmetrical Tx or Rx gets ITR=8000; + * everyone else is between 2000-8000. + */ + u32 goc = (adapter->gotc + adapter->gorc) / 10000; + u32 dif = (adapter->gotc > adapter->gorc ? + adapter->gotc - adapter->gorc : + adapter->gorc - adapter->gotc) / 10000; + u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; + + ew32(ITR, 1000000000 / (itr * 256)); + } + /* Cause software interrupt to ensure Rx ring is cleaned */ if (adapter->msix_entries) ew32(ICS, adapter->rx_ring->ims_val); |