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authorPeter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>2009-05-17 12:35:16 +0000
committerDavid S. Miller <davem@davemloft.net>2009-05-17 21:04:13 -0700
commit264857b8fe8a16fc95f12e898951fc6bd4bdaa7a (patch)
treeefb090175b49f72170555eab18cdcf1156ed2a4a /drivers/net/ixgbe/ixgbe_dcb_nl.c
parent70b77628d8d943b27cc0f72002b5884028aee38c (diff)
ixgbe: Allow link flow control in DCB mode for 82599 adapters
82599 supports using either link flow control or priority flow control when in DCB mode. The dcbnl interface already supports sending down configurations through rtnetlink that can enable LFC when DCB is enabled, so the driver should take advantage of this. 82598 does not support using LFC when DCB is enabled, so explicitly disable it when we're in DCB mode. This means we always run in PFC mode when DCB is enabled. Signed-off-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ixgbe/ixgbe_dcb_nl.c')
-rw-r--r--drivers/net/ixgbe/ixgbe_dcb_nl.c32
1 files changed, 29 insertions, 3 deletions
diff --git a/drivers/net/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ixgbe/ixgbe_dcb_nl.c
index 5d5d390f84b..6cbff96cc0f 100644
--- a/drivers/net/ixgbe/ixgbe_dcb_nl.c
+++ b/drivers/net/ixgbe/ixgbe_dcb_nl.c
@@ -126,7 +126,10 @@ static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
netdev->netdev_ops->ndo_stop(netdev);
ixgbe_clear_interrupt_scheme(adapter);
- adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
+ if (adapter->hw.mac.type == ixgbe_mac_82598EB) {
+ adapter->last_lfc_mode = adapter->hw.fc.current_mode;
+ adapter->hw.fc.requested_mode = ixgbe_fc_none;
+ }
adapter->flags &= ~IXGBE_FLAG_RSS_ENABLED;
adapter->flags |= IXGBE_FLAG_DCB_ENABLED;
ixgbe_init_interrupt_scheme(adapter);
@@ -135,11 +138,13 @@ static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state)
} else {
/* Turn off DCB */
if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) {
- adapter->hw.fc.requested_mode = ixgbe_fc_default;
if (netif_running(netdev))
netdev->netdev_ops->ndo_stop(netdev);
ixgbe_clear_interrupt_scheme(adapter);
+ adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
+ adapter->temp_dcb_cfg.pfc_mode_enable = false;
+ adapter->dcb_cfg.pfc_mode_enable = false;
adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED;
adapter->flags |= IXGBE_FLAG_RSS_ENABLED;
ixgbe_init_interrupt_scheme(adapter);
@@ -329,9 +334,24 @@ static u8 ixgbe_dcbnl_set_all(struct net_device *netdev)
return ret;
}
+ if (adapter->dcb_cfg.pfc_mode_enable) {
+ if ((adapter->hw.mac.type != ixgbe_mac_82598EB) &&
+ (adapter->hw.fc.current_mode != ixgbe_fc_pfc))
+ adapter->last_lfc_mode = adapter->hw.fc.current_mode;
+ adapter->hw.fc.requested_mode = ixgbe_fc_pfc;
+ } else {
+ if (adapter->hw.mac.type != ixgbe_mac_82598EB)
+ adapter->hw.fc.requested_mode = adapter->last_lfc_mode;
+ else
+ adapter->hw.fc.requested_mode = ixgbe_fc_none;
+ }
+
if (netif_running(netdev))
ixgbe_up(adapter);
+ if (adapter->dcb_cfg.pfc_mode_enable)
+ adapter->hw.fc.current_mode = ixgbe_fc_pfc;
+
adapter->dcb_set_bitmap = 0x00;
clear_bit(__IXGBE_RESETTING, &adapter->state);
return ret;
@@ -409,11 +429,17 @@ static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev)
{
struct ixgbe_adapter *adapter = netdev_priv(netdev);
- return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED);
+ return adapter->dcb_cfg.pfc_mode_enable;
}
static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state)
{
+ struct ixgbe_adapter *adapter = netdev_priv(netdev);
+
+ adapter->temp_dcb_cfg.pfc_mode_enable = state;
+ if (adapter->temp_dcb_cfg.pfc_mode_enable !=
+ adapter->dcb_cfg.pfc_mode_enable)
+ adapter->dcb_set_bitmap |= BIT_PFC;
return;
}