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ixgbe: fix older devices that do not support IXGBE_MRQC_L3L4TXSWEN 

The enabling L3/L4 filtering for transmit switched packets for all
devices caused unforeseen issue on older devices when trying to send UDP
traffic in an ordered sequence.  This bit was originally intended for X550
devices, which supported this feature, so limit the scope of this bit to
only X550 devices.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
This commit is contained in:
Jeff Kirsher 2019-01-28 09:45:01 -08:00
parent ae3b564179
commit 156a67a906
1 changed files with 5 additions and 2 deletions
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7
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
View File

@ -3953,8 +3953,11 @@ static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter)
else
mrqc = IXGBE_MRQC_VMDQRSS64EN;
/* Enable L3/L4 for Tx Switched packets */
mrqc |= IXGBE_MRQC_L3L4TXSWEN;
/* Enable L3/L4 for Tx Switched packets only for X550,
* older devices do not support this feature
*/
if (hw->mac.type >= ixgbe_mac_X550)
mrqc |= IXGBE_MRQC_L3L4TXSWEN;
} else {
if (tcs > 4)
mrqc = IXGBE_MRQC_RTRSS8TCEN;