From: Alexander Duyck Date: Fri, 25 May 2012 06:38:18 +0000 (+0000) Subject: ixgbe: Enable FCoE FSO and CRC offloads based on CAPABLE instead of ENABLED flag X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=a58915c7ecba89bef0914664ecf87c2156c68630;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git ixgbe: Enable FCoE FSO and CRC offloads based on CAPABLE instead of ENABLED flag Instead of only setting the FCOE segmentation offload and CRC offload flags if we enable FCoE, we could just set them always since there are no modifications needed to the hardware or adapter FCoE structure in order to use these features. The advantage to this is that if FCoE enablement fails, for example because SR-IOV was enabled on 82599, we will still have use of the FCoE segmentation offload and Tx/Rx CRC offloads which should still help to improve the FCoE performance. Signed-off-by: Alexander Duyck Tested-by: Phil Schmitt Tested-by: Ross Brattain Signed-off-by: Jeff Kirsher --- diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c index e79ba392734..ae73ef14fdf 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_fcoe.c @@ -616,11 +616,11 @@ void ixgbe_configure_fcoe(struct ixgbe_adapter *adapter) int i, fcoe_q, fcoe_i; u32 etqf; - /* leave registers unconfigued if FCoE is disabled */ - if (!(adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) + /* Minimal functionality for FCoE requires at least CRC offloads */ + if (!(adapter->netdev->features & NETIF_F_FCOE_CRC)) return; - /* Enable L2 EtherType filter for FCoE, necessary for FCoE Rx CRC */ + /* Enable L2 EtherType filter for FCoE, needed for FCoE CRC and DDP */ etqf = ETH_P_FCOE | IXGBE_ETQF_FCOE | IXGBE_ETQF_FILTER_EN; if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { etqf |= IXGBE_ETQF_POOL_ENABLE; @@ -629,6 +629,10 @@ void ixgbe_configure_fcoe(struct ixgbe_adapter *adapter) IXGBE_WRITE_REG(hw, IXGBE_ETQF(IXGBE_ETQF_FILTER_FCOE), etqf); IXGBE_WRITE_REG(hw, IXGBE_ETQS(IXGBE_ETQF_FILTER_FCOE), 0); + /* leave registers un-configured if FCoE is disabled */ + if (!(adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) + return; + /* Use one or more Rx queues for FCoE by redirection table */ for (i = 0; i < IXGBE_FCRETA_SIZE; i++) { fcoe_i = fcoe->offset + (i % fcoe->indices); @@ -804,7 +808,7 @@ int ixgbe_fcoe_enable(struct net_device *netdev) /* enable FCoE and notify stack */ adapter->flags |= IXGBE_FLAG_FCOE_ENABLED; - netdev->features |= NETIF_F_FSO | NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU; + netdev->features |= NETIF_F_FCOE_MTU; netdev_features_change(netdev); /* release existing queues and reallocate them */ @@ -844,9 +848,7 @@ int ixgbe_fcoe_disable(struct net_device *netdev) /* disable FCoE and notify stack */ adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED; - netdev->features &= ~(NETIF_F_FCOE_CRC | - NETIF_F_FSO | - NETIF_F_FCOE_MTU); + netdev->features &= ~NETIF_F_FCOE_MTU; netdev_features_change(netdev); diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index aa0155848d3..c521007c54b 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -6382,7 +6382,7 @@ netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb, #ifdef IXGBE_FCOE /* setup tx offload for FCoE */ if ((protocol == __constant_htons(ETH_P_FCOE)) && - (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) { + (tx_ring->netdev->features & (NETIF_F_FSO | NETIF_F_FCOE_CRC))) { tso = ixgbe_fso(tx_ring, first, &hdr_len); if (tso < 0) goto out_drop; @@ -7257,6 +7257,9 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev, adapter->ring_feature[RING_F_FCOE].limit = IXGBE_FCRETA_SIZE; + netdev->features |= NETIF_F_FSO | + NETIF_F_FCOE_CRC; + netdev->vlan_features |= NETIF_F_FSO | NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU;