diff options
| -rw-r--r-- | drivers/net/ixgbe/ixgbe_dcb_nl.c | 38 |
1 files changed, 26 insertions, 12 deletions
diff --git a/drivers/net/ixgbe/ixgbe_dcb_nl.c b/drivers/net/ixgbe/ixgbe_dcb_nl.c index bf566e8..4805835 100644 --- a/drivers/net/ixgbe/ixgbe_dcb_nl.c +++ b/drivers/net/ixgbe/ixgbe_dcb_nl.c @@ -353,6 +353,7 @@ static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority, static u8 ixgbe_dcbnl_set_all(struct net_device *netdev) { struct ixgbe_adapter *adapter = netdev_priv(netdev); + bool do_reset; int ret; if (!adapter->dcb_set_bitmap) @@ -368,7 +369,9 @@ static u8 ixgbe_dcbnl_set_all(struct net_device *netdev) * Only take down the adapter if the configuration change * requires a reset. */ - if (adapter->dcb_set_bitmap & BIT_RESETLINK) { + do_reset = adapter->dcb_set_bitmap & (BIT_RESETLINK | BIT_APP_UPCHG); + + if (do_reset) { while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) msleep(1); @@ -408,7 +411,7 @@ static u8 ixgbe_dcbnl_set_all(struct net_device *netdev) } } - if (adapter->dcb_set_bitmap & BIT_RESETLINK) { + if (do_reset) { if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) { ixgbe_init_interrupt_scheme(adapter); if (netif_running(netdev)) @@ -430,7 +433,7 @@ static u8 ixgbe_dcbnl_set_all(struct net_device *netdev) if (adapter->dcb_cfg.pfc_mode_enable) adapter->hw.fc.current_mode = ixgbe_fc_pfc; - if (adapter->dcb_set_bitmap & BIT_RESETLINK) + if (do_reset) clear_bit(__IXGBE_RESETTING, &adapter->state); adapter->dcb_set_bitmap = 0x00; return ret; @@ -568,18 +571,29 @@ static u8 ixgbe_dcbnl_setapp(struct net_device *netdev, case DCB_APP_IDTYPE_ETHTYPE: #ifdef IXGBE_FCOE if (id == ETH_P_FCOE) { - u8 tc; - struct ixgbe_adapter *adapter; + u8 old_tc; + struct ixgbe_adapter *adapter = netdev_priv(netdev); - adapter = netdev_priv(netdev); - tc = adapter->fcoe.tc; + /* Get current programmed tc */ + old_tc = adapter->fcoe.tc; rval = ixgbe_fcoe_setapp(adapter, up); - if ((!rval) && (tc != adapter->fcoe.tc) && - (adapter->flags & IXGBE_FLAG_DCB_ENABLED) && - (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) { + + if (rval || + !(adapter->flags & IXGBE_FLAG_DCB_ENABLED) || + !(adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) + break; + + /* The FCoE application priority may be changed multiple + * times in quick sucession with switches that build up + * TLVs. To avoid creating uneeded device resets this + * checks the actual HW configuration and clears + * BIT_APP_UPCHG if a HW configuration change is not + * need + */ + if (old_tc == adapter->fcoe.tc) + adapter->dcb_set_bitmap &= ~BIT_APP_UPCHG; + else adapter->dcb_set_bitmap |= BIT_APP_UPCHG; - adapter->dcb_set_bitmap |= BIT_RESETLINK; - } } #endif break; |