ixgbe: Move poll routine in order to improve readability
Alexander Duyck [Wed, 8 Feb 2012 07:51:27 +0000 (07:51 +0000)]
This change relocates the ixgbe_poll routine so it is right next to the
interrupt routine that schedules and calls it.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

index 6453e3a..73bba8b 100644 (file)
@@ -2308,6 +2308,55 @@ static irqreturn_t ixgbe_msix_clean_rings(int irq, void *data)
 }
 
 /**
+ * ixgbe_poll - NAPI Rx polling callback
+ * @napi: structure for representing this polling device
+ * @budget: how many packets driver is allowed to clean
+ *
+ * This function is used for legacy and MSI, NAPI mode
+ **/
+static int ixgbe_poll(struct napi_struct *napi, int budget)
+{
+       struct ixgbe_q_vector *q_vector =
+                               container_of(napi, struct ixgbe_q_vector, napi);
+       struct ixgbe_adapter *adapter = q_vector->adapter;
+       struct ixgbe_ring *ring;
+       int per_ring_budget;
+       bool clean_complete = true;
+
+#ifdef CONFIG_IXGBE_DCA
+       if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
+               ixgbe_update_dca(q_vector);
+#endif
+
+       ixgbe_for_each_ring(ring, q_vector->tx)
+               clean_complete &= !!ixgbe_clean_tx_irq(q_vector, ring);
+
+       /* attempt to distribute budget to each queue fairly, but don't allow
+        * the budget to go below 1 because we'll exit polling */
+       if (q_vector->rx.count > 1)
+               per_ring_budget = max(budget/q_vector->rx.count, 1);
+       else
+               per_ring_budget = budget;
+
+       ixgbe_for_each_ring(ring, q_vector->rx)
+               clean_complete &= ixgbe_clean_rx_irq(q_vector, ring,
+                                                    per_ring_budget);
+
+       /* If all work not completed, return budget and keep polling */
+       if (!clean_complete)
+               return budget;
+
+       /* all work done, exit the polling mode */
+       napi_complete(napi);
+       if (adapter->rx_itr_setting & 1)
+               ixgbe_set_itr(q_vector);
+       if (!test_bit(__IXGBE_DOWN, &adapter->state))
+               ixgbe_irq_enable_queues(adapter, ((u64)1 << q_vector->v_idx));
+
+       return 0;
+}
+
+/**
  * ixgbe_request_msix_irqs - Initialize MSI-X interrupts
  * @adapter: board private structure
  *
@@ -4254,55 +4303,6 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
 }
 
 /**
- * ixgbe_poll - NAPI Rx polling callback
- * @napi: structure for representing this polling device
- * @budget: how many packets driver is allowed to clean
- *
- * This function is used for legacy and MSI, NAPI mode
- **/
-static int ixgbe_poll(struct napi_struct *napi, int budget)
-{
-       struct ixgbe_q_vector *q_vector =
-                               container_of(napi, struct ixgbe_q_vector, napi);
-       struct ixgbe_adapter *adapter = q_vector->adapter;
-       struct ixgbe_ring *ring;
-       int per_ring_budget;
-       bool clean_complete = true;
-
-#ifdef CONFIG_IXGBE_DCA
-       if (adapter->flags & IXGBE_FLAG_DCA_ENABLED)
-               ixgbe_update_dca(q_vector);
-#endif
-
-       ixgbe_for_each_ring(ring, q_vector->tx)
-               clean_complete &= !!ixgbe_clean_tx_irq(q_vector, ring);
-
-       /* attempt to distribute budget to each queue fairly, but don't allow
-        * the budget to go below 1 because we'll exit polling */
-       if (q_vector->rx.count > 1)
-               per_ring_budget = max(budget/q_vector->rx.count, 1);
-       else
-               per_ring_budget = budget;
-
-       ixgbe_for_each_ring(ring, q_vector->rx)
-               clean_complete &= ixgbe_clean_rx_irq(q_vector, ring,
-                                                    per_ring_budget);
-
-       /* If all work not completed, return budget and keep polling */
-       if (!clean_complete)
-               return budget;
-
-       /* all work done, exit the polling mode */
-       napi_complete(napi);
-       if (adapter->rx_itr_setting & 1)
-               ixgbe_set_itr(q_vector);
-       if (!test_bit(__IXGBE_DOWN, &adapter->state))
-               ixgbe_irq_enable_queues(adapter, ((u64)1 << q_vector->v_idx));
-
-       return 0;
-}
-
-/**
  * ixgbe_tx_timeout - Respond to a Tx Hang
  * @netdev: network interface device structure
  **/