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    Subject[SR-IOV driver example 2/3] PF driver: integrate with SR-IOV core
    This patch integrates the IGB driver with the SR-IOV core. It shows how
    the SR-IOV API is used to support the capability. Obviously people does
    not need to put much effort to integrate the PF driver with SR-IOV core.
    All SR-IOV standard stuff are handled by SR-IOV core and PF driver only
    concerns the device specific resource allocation and deallocation once it
    gets the necessary information (i.e. number of Virtual Functions) from
    the callback function.

    ---
    drivers/net/igb/igb_main.c | 30 ++++++++++++++++++++++++++++++
    1 files changed, 30 insertions(+), 0 deletions(-)

    diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
    index bc063d4..b8c7dc6 100644
    --- a/drivers/net/igb/igb_main.c
    +++ b/drivers/net/igb/igb_main.c
    @@ -139,6 +139,7 @@ void igb_set_mc_list_pools(struct igb_adapter *, struct e1000_hw *, int, u16);
    static int igb_vmm_control(struct igb_adapter *, bool);
    static int igb_set_vf_mac(struct net_device *, int, u8*);
    static void igb_mbox_handler(struct igb_adapter *);
    +static int igb_virtual(struct pci_dev *, int);
    #endif

    static int igb_suspend(struct pci_dev *, pm_message_t);
    @@ -184,6 +185,9 @@ static struct pci_driver igb_driver = {
    #endif
    .shutdown = igb_shutdown,
    .err_handler = &igb_err_handler,
    +#ifdef CONFIG_PCI_IOV
    + .virtual = igb_virtual
    +#endif
    };

    static int global_quad_port_a; /* global quad port a indication */
    @@ -5107,6 +5111,32 @@ void igb_set_mc_list_pools(struct igb_adapter *adapter,
    reg_data |= (1 << 25);
    wr32(E1000_VMOLR(pool), reg_data);
    }
    +
    +static int
    +igb_virtual(struct pci_dev *pdev, int nr_virtfn)
    +{
    + unsigned char my_mac_addr[6] = {0x00, 0xDE, 0xAD, 0xBE, 0xEF, 0xFF};
    + struct net_device *netdev = pci_get_drvdata(pdev);
    + struct igb_adapter *adapter = netdev_priv(netdev);
    + int i;
    +
    + if (nr_virtfn > 7)
    + return -EINVAL;
    +
    + if (nr_virtfn) {
    + for (i = 0; i < nr_virtfn; i++) {
    + printk(KERN_INFO "SR-IOV: VF %d is enabled\n", i);
    + my_mac_addr[5] = (unsigned char)i;
    + igb_set_vf_mac(netdev, i, my_mac_addr);
    + igb_set_vf_vmolr(adapter, i);
    + }
    + } else
    + printk(KERN_INFO "SR-IOV is disabled\n");
    +
    + adapter->vfs_allocated_count = nr_virtfn;
    +
    + return 0;
    +}
    #endif

    /* igb_main.c */
    --
    1.5.4.4


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