From: Alexander Duyck Date: Wed, 9 May 2012 08:09:25 +0000 (+0000) Subject: ixgbe: Drop probe_vf and merge functionality into ixgbe_enable_sriov X-Git-Tag: firefly_0821_release~3680^2~2381^2~35^2~12 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=99d744875d01d57d832b8dbfc36d9a1990d503b8;p=firefly-linux-kernel-4.4.55.git ixgbe: Drop probe_vf and merge functionality into ixgbe_enable_sriov This is meant to fix a bug in which we were not checking for pre-existing VFs if we were not setting the max_vfs value at driver load. What happens now is that we always call ixgbe_enable_sriov and this checks for pre-existing VFs ore requested VFs prior to deciding on no SR-IOV. Signed-off-by: Alexander Duyck Tested-by: Phil Schmitt Tested-by: Sibai Li Signed-off-by: Jeff Kirsher --- diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c index 38d1b65777ad..3ff5aa801a6b 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_lib.c @@ -1061,8 +1061,7 @@ static void ixgbe_set_interrupt_capability(struct ixgbe_adapter *adapter) } adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE; adapter->atr_sample_rate = 0; - if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) - ixgbe_disable_sriov(adapter); + ixgbe_disable_sriov(adapter); adapter->ring_feature[RING_F_RSS].limit = 1; ixgbe_set_num_queues(adapter); diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index f4e53c1a7338..24f2b455a23f 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -4490,6 +4490,12 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter) hw->fc.send_xon = true; hw->fc.disable_fc_autoneg = false; +#ifdef CONFIG_PCI_IOV + /* assign number of SR-IOV VFs */ + if (hw->mac.type != ixgbe_mac_82598EB) + adapter->num_vfs = (max_vfs > 63) ? 0 : max_vfs; + +#endif /* enable itr by default in dynamic mode */ adapter->rx_itr_setting = 1; adapter->tx_itr_setting = 1; @@ -6942,26 +6948,6 @@ static const struct net_device_ops ixgbe_netdev_ops = { .ndo_fdb_dump = ixgbe_ndo_fdb_dump, }; -static void __devinit ixgbe_probe_vf(struct ixgbe_adapter *adapter, - const struct ixgbe_info *ii) -{ -#ifdef CONFIG_PCI_IOV - struct ixgbe_hw *hw = &adapter->hw; - - if (hw->mac.type == ixgbe_mac_82598EB) - return; - - /* The 82599 supports up to 64 VFs per physical function - * but this implementation limits allocation to 63 so that - * basic networking resources are still available to the - * physical function. If the user requests greater thn - * 63 VFs then it is an error - reset to default of zero. - */ - adapter->num_vfs = (max_vfs > 63) ? 0 : max_vfs; - ixgbe_enable_sriov(adapter, ii); -#endif /* CONFIG_PCI_IOV */ -} - /** * ixgbe_wol_supported - Check whether device supports WoL * @hw: hw specific details @@ -7206,8 +7192,10 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev, goto err_sw_init; } - ixgbe_probe_vf(adapter, ii); +#ifdef CONFIG_PCI_IOV + ixgbe_enable_sriov(adapter, ii); +#endif netdev->features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | @@ -7411,8 +7399,7 @@ err_register: ixgbe_release_hw_control(adapter); ixgbe_clear_interrupt_scheme(adapter); err_sw_init: - if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) - ixgbe_disable_sriov(adapter); + ixgbe_disable_sriov(adapter); adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; iounmap(hw->hw_addr); err_ioremap: diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c index a825d4808cd2..593fdd54f9ab 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_sriov.c @@ -82,7 +82,6 @@ void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, const struct ixgbe_info *ii) { struct ixgbe_hw *hw = &adapter->hw; - int err = 0; int num_vf_macvlans, i; struct vf_macvlans *mv_list; int pre_existing_vfs = 0; @@ -106,10 +105,21 @@ void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, "enabled for this device - Please reload all " "VF drivers to avoid spoofed packet errors\n"); } else { + int err; + /* + * The 82599 supports up to 64 VFs per physical function + * but this implementation limits allocation to 63 so that + * basic networking resources are still available to the + * physical function. If the user requests greater thn + * 63 VFs then it is an error - reset to default of zero. + */ + adapter->num_vfs = min_t(unsigned int, adapter->num_vfs, 63); + err = pci_enable_sriov(adapter->pdev, adapter->num_vfs); if (err) { e_err(probe, "Failed to enable PCI sriov: %d\n", err); - goto err_novfs; + adapter->num_vfs = 0; + return; } } @@ -193,11 +203,7 @@ void ixgbe_enable_sriov(struct ixgbe_adapter *adapter, /* Oh oh */ e_err(probe, "Unable to allocate memory for VF Data Storage - " "SRIOV disabled\n"); - pci_disable_sriov(adapter->pdev); - -err_novfs: - adapter->flags &= ~IXGBE_FLAG_SRIOV_ENABLED; - adapter->num_vfs = 0; + ixgbe_disable_sriov(adapter); } #endif /* #ifdef CONFIG_PCI_IOV */ @@ -219,6 +225,10 @@ void ixgbe_disable_sriov(struct ixgbe_adapter *adapter) kfree(adapter->mv_list); adapter->mv_list = NULL; + /* if SR-IOV is already disabled then there is nothing to do */ + if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) + return; + #ifdef CONFIG_PCI_IOV /* disable iov and allow time for transactions to clear */ pci_disable_sriov(adapter->pdev);