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)
116 lines
3.7 KiB
Plaintext
116 lines
3.7 KiB
Plaintext
diff --git a/ixgbe/ixgbe_main.c b/ixgbe/ixgbe_main.c
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index 8ef92d1..6a37803 100644
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--- a/ixgbe/ixgbe_main.c
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+++ b/ixgbe/ixgbe_main.c
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@@ -188,6 +188,22 @@ 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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@@ -745,6 +761,17 @@ static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector,
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unsigned int budget = q_vector->tx.work_limit;
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u16 i = tx_ring->next_to_clean;
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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 true; /* 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_ADV(tx_ring, i);
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@@ -1253,6 +1280,14 @@ static bool ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector,
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u16 cleaned_count = 0;
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bool pkt_is_rsc = false;
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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(adapter->netdev, rx_ring->queue_index, &dummy))
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+ return true;
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+#endif /* DEV_NETMAP */
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i = rx_ring->next_to_clean;
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rx_desc = IXGBE_RX_DESC_ADV(rx_ring, i);
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staterr = le32_to_cpu(rx_desc->wb.upper.status_error);
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@@ -2420,6 +2455,9 @@ 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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@@ -2783,6 +2821,10 @@ 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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@@ -3757,6 +3799,10 @@ 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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@@ -4007,6 +4053,10 @@ 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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@@ -7710,6 +7760,11 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
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e_dev_info("Intel(R) 10 Gigabit Network Connection\n");
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cards_found++;
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+
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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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