diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_common.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_common.c | 35 |
1 files changed, 22 insertions, 13 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c index 981b8a7b100d..bdc55819179d 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_common.c @@ -271,6 +271,7 @@ out: **/ s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw) { + s32 ret_val; u32 ctrl_ext; /* Set the media type */ @@ -292,12 +293,15 @@ s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw) IXGBE_WRITE_FLUSH(hw); /* Setup flow control */ - ixgbe_setup_fc(hw); + ret_val = ixgbe_setup_fc(hw); + if (!ret_val) + goto out; /* Clear adapter stopped flag */ hw->adapter_stopped = false; - return 0; +out: + return ret_val; } /** @@ -2106,19 +2110,25 @@ s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw) u32 fcrtl, fcrth; int i; - /* - * Validate the water mark configuration for packet buffer 0. Zero - * water marks indicate that the packet buffer was not configured - * and the watermarks for packet buffer 0 should always be configured. - */ - if (!hw->fc.low_water || - !hw->fc.high_water[0] || - !hw->fc.pause_time) { - hw_dbg(hw, "Invalid water mark configuration\n"); + /* Validate the water mark configuration. */ + if (!hw->fc.pause_time) { ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS; goto out; } + /* Low water mark of zero causes XOFF floods */ + for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { + if ((hw->fc.current_mode & ixgbe_fc_tx_pause) && + hw->fc.high_water[i]) { + if (!hw->fc.low_water[i] || + hw->fc.low_water[i] >= hw->fc.high_water[i]) { + hw_dbg(hw, "Invalid water mark configuration\n"); + ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS; + goto out; + } + } + } + /* Negotiate the fc mode to use */ ixgbe_fc_autoneg(hw); @@ -2181,12 +2191,11 @@ s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw) IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg); IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg); - fcrtl = (hw->fc.low_water << 10) | IXGBE_FCRTL_XONE; - /* Set up and enable Rx high/low water mark thresholds, enable XON. */ for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { if ((hw->fc.current_mode & ixgbe_fc_tx_pause) && hw->fc.high_water[i]) { + fcrtl = (hw->fc.low_water[i] << 10) | IXGBE_FCRTL_XONE; IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(i), fcrtl); fcrth = (hw->fc.high_water[i] << 10) | IXGBE_FCRTH_FCEN; } else { |