Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[pandora-kernel.git] / drivers / net / ethernet / intel / e1000e / param.c

diff --git a/drivers/net/ethernet/intel/e1000e/param.c b/drivers/net/ethernet/intel/e1000e/param.c
index feb6eeb..42444d1 100644 (file)
--- a/drivers/net/ethernet/intel/e1000e/param.c
+++ b/drivers/net/ethernet/intel/e1000e/param.c
@@ -106,7 +106,7 @@ E1000_PARAM(RxAbsIntDelay, "Receive Absolute Interrupt Delay");
 /*
  * Interrupt Throttle Rate (interrupts/sec)
  *
- * Valid Range: 100-100000 (0=off, 1=dynamic, 3=dynamic conservative)
+ * Valid Range: 100-100000 or one of: 0=off, 1=dynamic, 3=dynamic conservative
  */
 E1000_PARAM(InterruptThrottleRate, "Interrupt Throttling Rate");
 #define DEFAULT_ITR 3
@@ -389,8 +389,49 @@ void __devinit e1000e_check_options(struct e1000_adapter *adapter)
                                break;
                        }
                } else {
-                       adapter->itr_setting = opt.def;
+                       /*
+                        * If no option specified, use default value and go
+                        * through the logic below to adjust itr/itr_setting
+                        */
+                       adapter->itr = opt.def;
+
+                       /*
+                        * Make sure a message is printed for non-special
+                        * default values
+                        */
+                       if (adapter->itr > 40)
+                               e_info("%s set to default %d\n", opt.name,
+                                      adapter->itr);
+               }
+
+               adapter->itr_setting = adapter->itr;
+               switch (adapter->itr) {
+               case 0:
+                       e_info("%s turned off\n", opt.name);
+                       break;
+               case 1:
+                       e_info("%s set to dynamic mode\n", opt.name);
+                       adapter->itr = 20000;
+                       break;
+               case 3:
+                       e_info("%s set to dynamic conservative mode\n",
+                              opt.name);
                        adapter->itr = 20000;
+                       break;
+               case 4:
+                       e_info("%s set to simplified (2000-8000 ints) mode\n",
+                              opt.name);
+                       break;
+               default:
+                       /*
+                        * Save the setting, because the dynamic bits
+                        * change itr.
+                        *
+                        * Clear the lower two bits because
+                        * they are used as control.
+                        */
+                       adapter->itr_setting &= ~3;
+                       break;
                }
        }
        { /* Interrupt Mode */