ccdba9490b
- add netmap (FreeBSD header files need to be updated with this) - move prototype perl scripts to prototype/ folder - create basic structure for sipcap app (no code yet)
135 lines
4.1 KiB
Plaintext
135 lines
4.1 KiB
Plaintext
diff --git a/ixgbe/ixgbe_main.c b/ixgbe/ixgbe_main.c
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index 79f4a26..4b8a25b 100644
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--- a/ixgbe/ixgbe_main.c
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+++ b/ixgbe/ixgbe_main.c
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@@ -202,6 +202,22 @@ static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = {
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{}
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};
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+#if defined(CONFIG_NETMAP) || defined(CONFIG_NETMAP_MODULE)
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+/*
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+ * The #ifdef DEV_NETMAP / #endif blocks in this file are meant to
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+ * be a reference on how to implement netmap support in a driver.
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+ * Additional comments are in ixgbe_netmap_linux.h .
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+ *
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+ * The code is originally developed on FreeBSD and in the interest
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+ * of maintainability we try to limit differences between the two systems.
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+ *
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+ * <ixgbe_netmap_linux.h> contains functions for netmap support
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+ * that extend the standard driver.
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+ * It also defines DEV_NETMAP so further conditional sections use
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+ * that instead of CONFIG_NETMAP
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+ */
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+#include <ixgbe_netmap_linux.h>
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+#endif
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/*
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* ixgbe_regdump - register printout routine
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@@ -826,6 +842,17 @@ static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
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if (test_bit(__IXGBE_DOWN, &adapter->state))
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return true;
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+#ifdef DEV_NETMAP
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+ /*
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+ * In netmap mode, all the work is done in the context
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+ * of the client thread. Interrupt handlers only wake up
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+ * clients, which may be sleeping on individual rings
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+ * or on a global resource for all rings.
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+ */
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+ if (netmap_tx_irq(adapter->netdev, tx_ring->queue_index))
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+ return 1; /* seems to be ignored */
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+#endif /* DEV_NETMAP */
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+
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tx_buffer = &tx_ring->tx_buffer_info[i];
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tx_desc = IXGBE_TX_DESC(tx_ring, i);
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i -= tx_ring->count;
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@@ -1860,6 +1887,15 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
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#endif /* IXGBE_FCOE */
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u16 cleaned_count = ixgbe_desc_unused(rx_ring);
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+#ifdef DEV_NETMAP
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+ /*
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+ * Same as the txeof routine: only wakeup clients on intr.
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+ */
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+ int dummy;
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+ if (netmap_rx_irq(rx_ring->netdev, rx_ring->queue_index, &dummy))
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+ return true; /* no more interrupts */
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+#endif /* DEV_NETMAP */
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+
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do {
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union ixgbe_adv_rx_desc *rx_desc;
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struct sk_buff *skb;
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@@ -2846,6 +2882,9 @@ void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter,
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} while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE));
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if (!wait_loop)
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e_err(drv, "Could not enable Tx Queue %d\n", reg_idx);
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+#ifdef DEV_NETMAP
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+ ixgbe_netmap_configure_tx_ring(adapter, reg_idx);
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+#endif /* DEV_NETMAP */
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}
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static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter)
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@@ -3207,6 +3246,10 @@ void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter,
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IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl);
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ixgbe_rx_desc_queue_enable(adapter, ring);
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+#ifdef DEV_NETMAP
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+ if (ixgbe_netmap_configure_rx_ring(adapter, reg_idx))
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+ return;
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+#endif /* DEV_NETMAP */
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ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring));
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}
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@@ -4155,6 +4198,10 @@ static void ixgbe_up_complete(struct ixgbe_adapter *adapter)
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/* enable transmits */
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netif_tx_start_all_queues(adapter->netdev);
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+#ifdef DEV_NETMAP
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+ netmap_enable_all_rings(adapter->netdev);
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+#endif
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+
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/* bring the link up in the watchdog, this could race with our first
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* link up interrupt but shouldn't be a problem */
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adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE;
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@@ -4402,6 +4449,10 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
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ixgbe_napi_disable_all(adapter);
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+#ifdef DEV_NETMAP
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+ netmap_disable_all_rings(netdev);
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+#endif
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+
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adapter->flags2 &= ~(IXGBE_FLAG2_FDIR_REQUIRES_REINIT |
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IXGBE_FLAG2_RESET_REQUESTED);
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adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE;
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@@ -4976,6 +5027,7 @@ static int ixgbe_open(struct net_device *netdev)
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ixgbe_up_complete(adapter);
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+
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return 0;
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err_set_queues:
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@@ -7619,6 +7671,10 @@ skip_sriov:
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ixgbe_dbg_adapter_init(adapter);
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#endif /* CONFIG_DEBUG_FS */
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+#ifdef DEV_NETMAP
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+ ixgbe_netmap_attach(adapter);
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+#endif /* DEV_NETMAP */
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+
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return 0;
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err_register:
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@@ -7653,6 +7709,10 @@ static void ixgbe_remove(struct pci_dev *pdev)
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struct ixgbe_adapter *adapter = pci_get_drvdata(pdev);
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struct net_device *netdev = adapter->netdev;
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+#ifdef DEV_NETMAP
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+ netmap_detach(netdev);
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+#endif /* DEV_NETMAP */
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+
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#ifdef CONFIG_DEBUG_FS
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ixgbe_dbg_adapter_exit(adapter);
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#endif /*CONFIG_DEBUG_FS */
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