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ixgbe: Fix coexistence of FCoE and Flow Director in 82599

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Fix coexistence of Fiber Channel over Ethernet (FCoE) and Flow Director (FDIR)
in 82599 and remove the disabling of FDIR when FCoE is enabled.

Currently, FDIR is turned off when FCoE is enabled under the assumption that
FCoE is always enabled with DCB being turned on. However, FDIR does not have
to be turned off all the time when FCoE is enabled since FCoE can be enabled
without DCB being turned on, e.g., use link pause only. This patch makes sure
that when DCB is turned on or off, FDIR is turned on or off correspondingly;
and when FCoE is enabled, it does not disable FDIR, rather, it will have FDIR
set up properly so FCoE and FDIR can coexist regardless of DCB being on or off.

Signed-off-by: Yi Zou <yi.zou@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yi Zou 2009-07-09 02:29:50 +00:00 committed by David S. Miller
parent ad46276952
commit 8faa2a786a
2 changed files with 17 additions and 8 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
drivers/net/ixgbe/ixgbe_dcb_nl.c
View file

@ -138,6 +138,10 @@ static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
adapter->hw.fc.requested_mode = ixgbe_fc_none;
}
adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
if (adapter->hw.mac.type == ixgbe_mac_82599EB) {
adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
}
adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
ixgbe_init_interrupt_scheme(adapter);
if (netif_running(netdev))
@ -154,6 +158,8 @@ static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
adapter->dcb_cfg.pfc_mode_enable = false;
adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
if (adapter->hw.mac.type == ixgbe_mac_82599EB)
adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE;
ixgbe_init_interrupt_scheme(adapter);
if (netif_running(netdev))
netdev->netdev_ops->ndo_open(netdev);

19
drivers/net/ixgbe/ixgbe_main.c
View file

@ -3130,7 +3130,11 @@ static inline bool ixgbe_set_fcoe_queues(struct ixgbe_adapter *adapter)
#endif
if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
DPRINTK(PROBE, INFO, "FCOE enabled with RSS \n");
ixgbe_set_rss_queues(adapter);
if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
ixgbe_set_fdir_queues(adapter);
else
ixgbe_set_rss_queues(adapter);
}
/* adding FCoE rx rings to the end */
f->mask = adapter->num_rx_queues;
@ -3388,7 +3392,12 @@ static inline bool ixgbe_cache_ring_fcoe(struct ixgbe_adapter *adapter)
}
#endif /* CONFIG_IXGBE_DCB */
if (adapter->flags & IXGBE_FLAG_RSS_ENABLED) {
ixgbe_cache_ring_rss(adapter);
if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) ||
(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE))
ixgbe_cache_ring_fdir(adapter);
else
ixgbe_cache_ring_rss(adapter);
fcoe_i = f->mask;
}
for (i = 0; i < f->indices; i++, fcoe_i++)
@ -5578,12 +5587,6 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
netdev->features |= NETIF_F_FCOE_CRC;
netdev->features |= NETIF_F_FSO;
netdev->fcoe_ddp_xid = IXGBE_FCOE_DDP_MAX - 1;
DPRINTK(DRV, INFO, "FCoE enabled, "
"disabling Flow Director\n");
adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE;
adapter->flags &=
~IXGBE_FLAG_FDIR_PERFECT_CAPABLE;
adapter->atr_sample_rate = 0;
} else {
adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED;
}