Commit 0d551589 authored by Yi Zou's avatar Yi Zou Committed by David S. Miller

ixgbe: Enable FCoE offload when DCB is enabled for 82599

Currently, FCoE offload feature is turned on when the kernel config has
CONFIG_FCOE or CONFIG_FCOE_MODULE set. However, we really want to turn
FCoE offload on when there is FCoE traffic passing and turn it off when
it's just LAN traffic. Since FCoE depends on a lossless network provided
by DCB, this allows us to have FCoE turned on/off when user turns on DCB
using dcbtool.
Signed-off-by: default avatarYi Zou <yi.zou@intel.com>
Acked-by: default avatarPeter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent dacac4da
......@@ -327,6 +327,7 @@ struct ixgbe_adapter {
#define IXGBE_FLAG_IN_SFP_MOD_TASK (u32)(1 << 25)
#define IXGBE_FLAG_FDIR_HASH_CAPABLE (u32)(1 << 26)
#define IXGBE_FLAG_FDIR_PERFECT_CAPABLE (u32)(1 << 27)
#define IXGBE_FLAG_FCOE_CAPABLE (u32)(1 << 28)
#define IXGBE_FLAG_FCOE_ENABLED (u32)(1 << 29)
u32 flags2;
......
......@@ -139,6 +139,18 @@ static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
}
adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
#ifdef IXGBE_FCOE
/* Turn on FCoE offload */
if ((adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) &&
(!(adapter->flags & IXGBE_FLAG_FCOE_ENABLED))) {
adapter->flags |= IXGBE_FLAG_FCOE_ENABLED;
adapter->ring_feature[RING_F_FCOE].indices =
IXGBE_FCRETA_SIZE;
netdev->features |= NETIF_F_FCOE_CRC;
netdev->features |= NETIF_F_FSO;
netdev->fcoe_ddp_xid = IXGBE_FCOE_DDP_MAX - 1;
}
#endif /* IXGBE_FCOE */
ixgbe_init_interrupt_scheme(adapter);
if (netif_running(netdev))
netdev->netdev_ops->ndo_open(netdev);
......@@ -156,6 +168,18 @@ static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
if (adapter->hw.mac.type == ixgbe_mac_82599EB)
adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
#ifdef IXGBE_FCOE
/* Turn off FCoE offload */
if (adapter->flags & (IXGBE_FLAG_FCOE_CAPABLE |
IXGBE_FLAG_FCOE_ENABLED)) {
adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
adapter->ring_feature[RING_F_FCOE].indices = 0;
netdev->features &= ~NETIF_F_FCOE_CRC;
netdev->features &= ~NETIF_F_FSO;
netdev->fcoe_ddp_xid = 0;
}
#endif /* IXGBE_FCOE */
ixgbe_init_interrupt_scheme(adapter);
if (netif_running(netdev))
netdev->netdev_ops->ndo_open(netdev);
......
......@@ -3806,8 +3806,9 @@ static int __devinit ixgbe_sw_init(struct ixgbe_adapter *adapter)
adapter->atr_sample_rate = 20;
adapter->fdir_pballoc = 0;
#ifdef IXGBE_FCOE
adapter->flags |= IXGBE_FLAG_FCOE_ENABLED;
adapter->ring_feature[RING_F_FCOE].indices = IXGBE_FCRETA_SIZE;
adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE;
adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
adapter->ring_feature[RING_F_FCOE].indices = 0;
#endif /* IXGBE_FCOE */
}
......@@ -5580,16 +5581,11 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
#endif
#ifdef IXGBE_FCOE
if (adapter->flags & IXGBE_FLAG_FCOE_ENABLED) {
if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) {
if (hw->mac.ops.get_device_caps) {
hw->mac.ops.get_device_caps(hw, &device_caps);
if (!(device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)) {
netdev->features |= NETIF_F_FCOE_CRC;
netdev->features |= NETIF_F_FSO;
netdev->fcoe_ddp_xid = IXGBE_FCOE_DDP_MAX - 1;
} else {
adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
}
if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS)
adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE;
}
}
#endif /* IXGBE_FCOE */
......
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