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Date: Wed, 12 Sep 2007 11:13:07 -0700
From: Auke Kok <auke-jan.h.kok@...el.com>
To: akpm@...ux-foundation.org, davem@...emloft.net
Cc: netdev@...r.kernel.org, jeff@...zik.org, jesse.brandeburg@...el.com
Subject: [PATCH] [-MM,
FIX] ixgbe: incorporate napi_struct changes from net-2.6.24.git
This incorporates the new napi_struct changes into ixgbe.
Signed-off-by: Auke Kok <auke-jan.h.kok@...el.com>
---
drivers/net/ixgbe/ixgbe.h | 1 +
drivers/net/ixgbe/ixgbe_main.c | 62 +++++++++++++++++-----------------------
2 files changed, 27 insertions(+), 36 deletions(-)
diff --git a/drivers/net/ixgbe/ixgbe.h b/drivers/net/ixgbe/ixgbe.h
index b24803f..c160a7d 100644
--- a/drivers/net/ixgbe/ixgbe.h
+++ b/drivers/net/ixgbe/ixgbe.h
@@ -179,6 +179,7 @@ struct ixgbe_adapter {
/* TX */
struct ixgbe_ring *tx_ring; /* One per active queue */
+ struct napi_struct napi;
u64 restart_queue;
u64 lsc_int;
u64 hw_tso_ctxt;
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 23fb1ed..a08a462 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -557,14 +557,15 @@ static irqreturn_t ixgbe_msix_clean_rx(int irq, void *data)
struct ixgbe_adapter *adapter = rxr->adapter;
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, rxr->eims_value);
- netif_rx_schedule(adapter->netdev);
+ netif_rx_schedule(adapter->netdev, &adapter->napi);
return IRQ_HANDLED;
}
-static int ixgbe_clean_rxonly(struct net_device *netdev, int *budget)
+static int ixgbe_clean_rxonly(struct napi_struct *napi, int budget)
{
- struct ixgbe_adapter *adapter = netdev_priv(netdev);
- int work_to_do = min(*budget, netdev->quota);
+ struct ixgbe_adapter *adapter = container_of(napi,
+ struct ixgbe_adapter, napi);
+ struct net_device *netdev = adapter->netdev;
int work_done = 0;
struct ixgbe_ring *rxr = adapter->rx_ring;
@@ -572,22 +573,18 @@ static int ixgbe_clean_rxonly(struct net_device *netdev, int *budget)
if (!netif_carrier_ok(netdev))
goto quit_polling;
- ixgbe_clean_rx_irq(adapter, rxr, &work_done, work_to_do);
-
- *budget -= work_done;
- netdev->quota -= work_done;
+ ixgbe_clean_rx_irq(adapter, rxr, &work_done, budget);
/* If no Tx and not enough Rx work done, exit the polling mode */
- if ((work_done == 0) || !netif_running(netdev)) {
+ if ((work_done < budget) || !netif_running(netdev)) {
quit_polling:
- netif_rx_complete(netdev);
+ netif_rx_complete(netdev, napi);
if (!test_bit(__IXGBE_DOWN, &adapter->state))
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS,
rxr->eims_value);
- return 0;
}
- return 1;
+ return work_done;
}
/**
@@ -669,7 +666,8 @@ static int ixgbe_setup_msix(struct ixgbe_adapter *adapter)
goto release_irqs;
}
- adapter->netdev->poll = ixgbe_clean_rxonly;
+ /* FIXME: implement netif_napi_remove() instead */
+ adapter->napi.poll = ixgbe_clean_rxonly;
adapter->flags |= IXGBE_FLAG_MSIX_ENABLED;
return 0;
@@ -713,12 +711,12 @@ static irqreturn_t ixgbe_intr(int irq, void *data)
if (!test_bit(__IXGBE_DOWN, &adapter->state))
mod_timer(&adapter->watchdog_timer, jiffies);
}
- if (netif_rx_schedule_prep(netdev)) {
+ if (netif_rx_schedule_prep(netdev, &adapter->napi)) {
/* Disable interrupts and register for poll. The flush of the
* posted write is intentionally left out. */
atomic_inc(&adapter->irq_sem);
IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0);
- __netif_rx_schedule(netdev);
+ __netif_rx_schedule(netdev, &adapter->napi);
}
return IRQ_HANDLED;
@@ -1218,7 +1216,7 @@ static int ixgbe_up_complete(struct ixgbe_adapter *adapter)
ixgbe_configure_msi_and_legacy(adapter);
clear_bit(__IXGBE_DOWN, &adapter->state);
- netif_poll_enable(netdev);
+ napi_enable(&adapter->napi);
ixgbe_irq_enable(adapter);
/* bring the link up in the watchdog, this could race with our first
@@ -1412,7 +1410,7 @@ void ixgbe_down(struct ixgbe_adapter *adapter)
ixgbe_irq_disable(adapter);
- netif_poll_disable(netdev);
+ napi_disable(&adapter->napi);
del_timer_sync(&adapter->watchdog_timer);
netif_carrier_off(netdev);
@@ -1464,11 +1462,12 @@ static void ixgbe_shutdown(struct pci_dev *pdev)
* ixgbe_clean - NAPI Rx polling callback
* @adapter: board private structure
**/
-static int ixgbe_clean(struct net_device *netdev, int *budget)
+static int ixgbe_clean(struct napi_struct *napi, int budget)
{
- struct ixgbe_adapter *adapter = netdev_priv(netdev);
- int work_to_do = min(*budget, netdev->quota);
- int tx_cleaned, work_done = 0;
+ struct ixgbe_adapter *adapter = container_of(napi,
+ struct ixgbe_adapter, napi);
+ struct net_device *netdev = adapter->netdev;
+ int tx_cleaned = 0, work_done = 0;
/* Keep link state information with original netdev */
if (!netif_carrier_ok(adapter->netdev))
@@ -1477,24 +1476,17 @@ static int ixgbe_clean(struct net_device *netdev, int *budget)
/* In non-MSIX case, there is no multi-Tx/Rx queue */
tx_cleaned = ixgbe_clean_tx_irq(adapter, adapter->tx_ring);
ixgbe_clean_rx_irq(adapter, &adapter->rx_ring[0], &work_done,
- work_to_do);
-
- *budget -= work_done;
- netdev->quota -= work_done;
+ budget);
/* If no Tx and not enough Rx work done, exit the polling mode */
- if ((!tx_cleaned && (work_done == 0)) ||
+ if ((!tx_cleaned && (work_done < budget)) ||
!netif_running(adapter->netdev)) {
quit_polling:
- netif_rx_complete(netdev);
- if (test_bit(__IXGBE_DOWN, &adapter->state))
- atomic_dec(&adapter->irq_sem);
- else
- ixgbe_irq_enable(adapter);
- return 0;
+ netif_rx_complete(netdev, napi);
+ ixgbe_irq_enable(adapter);
}
- return 1;
+ return work_done;
}
/**
@@ -2592,8 +2584,7 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
ixgbe_set_ethtool_ops(netdev);
netdev->tx_timeout = &ixgbe_tx_timeout;
netdev->watchdog_timeo = 5 * HZ;
- netdev->poll = &ixgbe_clean;
- netdev->weight = 64;
+ netif_napi_add(netdev, &adapter->napi, ixgbe_clean, 64);
netdev->vlan_rx_register = ixgbe_vlan_rx_register;
netdev->vlan_rx_add_vid = ixgbe_vlan_rx_add_vid;
netdev->vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid;
@@ -2698,7 +2689,6 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
netif_carrier_off(netdev);
netif_stop_queue(netdev);
- netif_poll_disable(netdev);
strcpy(netdev->name, "eth%d");
err = register_netdev(netdev);
-
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