2.6.37-stable review patch. If anyone has any objections, please let us know.
------------------ From: Don Skidmore <[email protected]> commit a124339ad28389093ed15eca990d39c51c5736cc upstream. We have found a hardware erratum on 82599 hardware that can lead to unpredictable behavior when Header Splitting mode is enabled. So we are no longer enabling this feature on affected hardware. Please see the 82599 Specification Update for more information. Signed-off-by: Don Skidmore <[email protected]> Tested-by: Stephen Ko <[email protected]> Signed-off-by: Jeff Kirsher <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/net/ixgbe/ixgbe_main.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) --- a/drivers/net/ixgbe/ixgbe_main.c +++ b/drivers/net/ixgbe/ixgbe_main.c @@ -2912,9 +2912,16 @@ static void ixgbe_set_rx_buffer_len(stru u32 mhadd, hlreg0; /* Decide whether to use packet split mode or not */ + /* On by default */ + adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; + /* Do not use packet split if we're in SR-IOV Mode */ - if (!adapter->num_vfs) - adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; + if (adapter->num_vfs) + adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED; + + /* Disable packet split due to 82599 erratum #45 */ + if (hw->mac.type == ixgbe_mac_82599EB) + adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED; /* Set the RX buffer length according to the mode */ if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
