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List: e1000-devel
Subject: [E1000-devel] [rfc 1/3 v3] [rfc 1/4] igb: Add igb_cleanup_vf()
From: Simon Horman <horms () verge ! net ! au>
Date: 2009-11-26 0:05:39
Message-ID: 20091126000758.275292536 () vergenet ! net
[Download RAW message or body]
Move virtual function cleanup code into igb_cleanup_vf() and for the sake
of symmetry rename igb_probe_vfs() as igb_init_vf().
Although these functions aren't entirely symmetrical it should aid
maintenance by making the relationship between initialisation and cleanup
more obvious.
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
---
Thu, 05 Nov 2009 11:58:48 +1100
* Initial post
Wed, 25 Nov 2009 15:43:45 +1100
* Actually remove adapter->vfs_allocated_count = 0 from outside of
igb_cleanup_vf()
* Up-port to current net-next
Thu, 26 Nov 2009 10:29:02 +1100
As per suggestion from Alexander Duyck
* Use igb_cleanup_vf() in igb_remove()
Index: net-next-2.6/drivers/net/igb/igb_main.c
===================================================================
--- net-next-2.6.orig/drivers/net/igb/igb_main.c 2009-11-26 10:31:13.000000000 +1100
+++ net-next-2.6/drivers/net/igb/igb_main.c 2009-11-26 10:32:02.000000000 +1100
@@ -92,6 +92,7 @@ void igb_update_stats(struct igb_adapter
static int igb_probe(struct pci_dev *, const struct pci_device_id *);
static void __devexit igb_remove(struct pci_dev *pdev);
static int igb_sw_init(struct igb_adapter *);
+static void igb_cleanup_vf(struct igb_adapter * adapter);
static int igb_open(struct net_device *);
static int igb_close(struct net_device *);
static void igb_configure_tx(struct igb_adapter *);
@@ -701,22 +702,7 @@ static void igb_set_interrupt_capability
/* If we can't do MSI-X, try MSI */
msi_only:
-#ifdef CONFIG_PCI_IOV
- /* disable SR-IOV for non MSI-X configurations */
- if (adapter->vf_data) {
- struct e1000_hw *hw = &adapter->hw;
- /* disable iov and allow time for transactions to clear */
- pci_disable_sriov(adapter->pdev);
- msleep(500);
-
- kfree(adapter->vf_data);
- adapter->vf_data = NULL;
- wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
- msleep(100);
- dev_info(&adapter->pdev->dev, "IOV Disabled\n");
- }
-#endif
- adapter->vfs_allocated_count = 0;
+ igb_cleanup_vf(adapter);
adapter->rss_queues = 1;
adapter->flags |= IGB_FLAG_QUEUE_PAIRS;
adapter->num_rx_queues = 1;
@@ -1725,21 +1711,7 @@ static void __devexit igb_remove(struct
igb_reset_phy(hw);
igb_clear_interrupt_scheme(adapter);
-
-#ifdef CONFIG_PCI_IOV
- /* reclaim resources allocated to VFs */
- if (adapter->vf_data) {
- /* disable iov and allow time for transactions to clear */
- pci_disable_sriov(pdev);
- msleep(500);
-
- kfree(adapter->vf_data);
- adapter->vf_data = NULL;
- wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
- msleep(100);
- dev_info(&pdev->dev, "IOV Disabled\n");
- }
-#endif
+ igb_cleanup_vf(adapter);
iounmap(hw->hw_addr);
if (hw->flash_address)
@@ -1755,7 +1727,7 @@ static void __devexit igb_remove(struct
}
/**
- * igb_probe_vfs - Initialize vf data storage and add VFs to pci config space
+ * igb_init_vf - Initialize vf data storage and add VFs to pci config space
* @adapter: board private structure to initialize
*
* This function initializes the vf specific data storage and then attempts to
@@ -1763,7 +1735,7 @@ static void __devexit igb_remove(struct
* mor expensive time wise to disable SR-IOV than it is to allocate and free
* the memory for the VFs.
**/
-static void __devinit igb_probe_vfs(struct igb_adapter * adapter)
+static void __devinit igb_init_vf(struct igb_adapter * adapter)
{
#ifdef CONFIG_PCI_IOV
struct pci_dev *pdev = adapter->pdev;
@@ -1909,6 +1881,35 @@ static void igb_init_hw_timer(struct igb
}
/**
+ * igb_cleanup_vf - Clean up vf data and remove vfs from pci config space
+ * @adapter: board private structure to initialize
+ *
+ * This function cleans-up the vf specific data storage and then attempts to
+ * deallocate the VFs.
+ **/
+static void igb_cleanup_vf(struct igb_adapter * adapter)
+{
+#ifdef CONFIG_PCI_IOV
+ struct e1000_hw *hw = &adapter->hw;
+
+ if (!adapter->vf_data)
+ return;
+
+ /* disable iov and allow time for transactions to clear */
+ pci_disable_sriov(adapter->pdev);
+ msleep(500);
+
+ kfree(adapter->vf_data);
+ adapter->vf_data = NULL;
+ adapter->vfs_allocated_count = 0;
+
+ wr32(E1000_IOVCTL, E1000_IOVCTL_REUSE_VFQ);
+ msleep(100);
+ dev_info(&adapter->pdev->dev, "IOV Disabled\n");
+#endif
+}
+
+/**
* igb_sw_init - Initialize general software structures (struct igb_adapter)
* @adapter: board private structure to initialize
*
@@ -1955,7 +1956,7 @@ static int __devinit igb_sw_init(struct
}
igb_init_hw_timer(adapter);
- igb_probe_vfs(adapter);
+ igb_init_vf(adapter);
/* Explicitly disable IRQ since the NIC can be in any state. */
igb_irq_disable(adapter);
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