From f6bd5577a39aed21cefd698bc46f70cfeaa0923c Mon Sep 17 00:00:00 2001 From: Matthew Vick Date: Wed, 25 Apr 2012 08:01:05 +0000 Subject: e1000e: Driver workaround for IPv6 Header Extension Erratum. Previously, IPv6 extension header parsing was disabled for all devices supported by e1000e when using packet split mode. However, as per a silicon errata, only certain devices need this restriction and will need to disable IPv6 extension header parsing for all modes. Signed-off-by: Matthew Vick Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/82571.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'drivers/net/ethernet/intel/e1000e/82571.c') diff --git a/drivers/net/ethernet/intel/e1000e/82571.c b/drivers/net/ethernet/intel/e1000e/82571.c index 7b02e87b0b65..98632f4561b2 100644 --- a/drivers/net/ethernet/intel/e1000e/82571.c +++ b/drivers/net/ethernet/intel/e1000e/82571.c @@ -1279,6 +1279,16 @@ static void e1000_initialize_hw_bits_82571(struct e1000_hw *hw) ew32(CTRL_EXT, reg); } + /* + * Disable IPv6 extension header parsing because some malformed + * IPv6 headers can hang the Rx. + */ + if (hw->mac.type <= e1000_82573) { + reg = er32(RFCTL); + reg |= (E1000_RFCTL_IPV6_EX_DIS | E1000_RFCTL_NEW_IPV6_EXT_DIS); + ew32(RFCTL, reg); + } + /* PCI-Ex Control Registers */ switch (hw->mac.type) { case e1000_82574: -- cgit