sipcap/netmap/LINUX/final-patches/diff--ixgbe--30900--30a00

diff --git a/ixgbe/ixgbe_main.c b/ixgbe/ixgbe_main.c
index 79f4a26..4b8a25b 100644
--- a/ixgbe/ixgbe_main.c
+++ b/ixgbe/ixgbe_main.c
@@ -202,6 +202,22 @@ static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = {
 	{}
 };
 
+#if defined(CONFIG_NETMAP) || defined(CONFIG_NETMAP_MODULE)
+/*
+ * The #ifdef DEV_NETMAP / #endif blocks in this file are meant to
+ * be a reference on how to implement netmap support in a driver.
+ * Additional comments are in ixgbe_netmap_linux.h .
+ *
+ * The code is originally developed on FreeBSD and in the interest
+ * of maintainability we try to limit differences between the two systems.
+ *
+ * <ixgbe_netmap_linux.h> contains functions for netmap support
+ * that extend the standard driver.
+ * It also defines DEV_NETMAP so further conditional sections use
+ * that instead of CONFIG_NETMAP
+ */
+#include <ixgbe_netmap_linux.h>
+#endif
 
 /*
  * ixgbe_regdump - register printout routine
@@ -826,6 +842,17 @@ static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
 	if (test_bit(__IXGBE_DOWN, &adapter->state))
 		return true;
 
+#ifdef DEV_NETMAP
+	/*
+	 * In netmap mode, all the work is done in the context
+	 * of the client thread. Interrupt handlers only wake up
+	 * clients, which may be sleeping on individual rings
+	 * or on a global resource for all rings.
+	 */
+	if (netmap_tx_irq(adapter->netdev, tx_ring->queue_index))
+		return 1; /* seems to be ignored */
+#endif /* DEV_NETMAP */
+
 	tx_buffer = &tx_ring->tx_buffer_info[i];
 	tx_desc = IXGBE_TX_DESC(tx_ring, i);
 	i -= tx_ring->count;
@@ -1860,6 +1887,15 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
 #endif /* IXGBE_FCOE */
 	u16 cleaned_count = ixgbe_desc_unused(rx_ring);
 
+#ifdef DEV_NETMAP
+	/*
+	 * 	 Same as the txeof routine: only wakeup clients on intr.
+	 */
+	int dummy;
+	if (netmap_rx_irq(rx_ring->netdev, rx_ring->queue_index, &dummy))
+		return true; /* no more interrupts */
+#endif /* DEV_NETMAP */
+
 	do {
 		union ixgbe_adv_rx_desc *rx_desc;
 		struct sk_buff *skb;
@@ -2846,6 +2882,9 @@ void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter,
 	} while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE));
 	if (!wait_loop)
 		e_err(drv, "Could not enable Tx Queue %d\n", reg_idx);
+#ifdef DEV_NETMAP
+	ixgbe_netmap_configure_tx_ring(adapter, reg_idx);
+#endif /* DEV_NETMAP */
 }
 
 static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
@@ -3207,6 +3246,10 @@ void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
 	IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
 
 	ixgbe_rx_desc_queue_enable(adapter, ring);
+#ifdef DEV_NETMAP
+	if (ixgbe_netmap_configure_rx_ring(adapter, reg_idx))
+		return;
+#endif /* DEV_NETMAP */
 	ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring));
 }
 
@@ -4155,6 +4198,10 @@ static void ixgbe_up_complete(struct ixgbe_adapter *adapter)
 	/* enable transmits */
 	netif_tx_start_all_queues(adapter->netdev);
 
+#ifdef DEV_NETMAP
+	netmap_enable_all_rings(adapter->netdev);
+#endif
+
 	/* bring the link up in the watchdog, this could race with our first
 	 * link up interrupt but shouldn't be a problem */
 	adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
@@ -4402,6 +4449,10 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
 
 	ixgbe_napi_disable_all(adapter);
 
+#ifdef DEV_NETMAP
+	netmap_disable_all_rings(netdev);
+#endif
+
 	adapter->flags2 &= ~(IXGBE_FLAG2_FDIR_REQUIRES_REINIT |
 			     IXGBE_FLAG2_RESET_REQUESTED);
 	adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
@@ -4976,6 +5027,7 @@ static int ixgbe_open(struct net_device *netdev)
 
 	ixgbe_up_complete(adapter);
 
+
 	return 0;
 
 err_set_queues:
@@ -7619,6 +7671,10 @@ skip_sriov:
 	ixgbe_dbg_adapter_init(adapter);
 #endif /* CONFIG_DEBUG_FS */
 
+#ifdef DEV_NETMAP
+	ixgbe_netmap_attach(adapter);
+#endif /* DEV_NETMAP */
+
 	return 0;
 
 err_register:
@@ -7653,6 +7709,10 @@ static void ixgbe_remove(struct pci_dev *pdev)
 	struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
 	struct net_device *netdev = adapter->netdev;
 
+#ifdef DEV_NETMAP
+	netmap_detach(netdev);
+#endif /* DEV_NETMAP */
+
 #ifdef CONFIG_DEBUG_FS
 	ixgbe_dbg_adapter_exit(adapter);
 #endif /*CONFIG_DEBUG_FS */