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authorDon Skidmore <donald.c.skidmore@intel.com>2011-01-18 17:53:47 -0500
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-02-08 04:19:29 -0500
commita124339ad28389093ed15eca990d39c51c5736cc (patch)
tree7f0e21b33e95fa4c7389fb00f454c7aac072308f /drivers/net/ixgbe
parent2c4db944a29c624dd5e4b9c44fc6c9901831d2d5 (diff)
ixgbe: fix for 82599 erratum on Header Splitting
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. CC: stable@kernel.org Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com> Tested-by: Stephen Ko <stephen.s.ko@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ixgbe')
-rw-r--r--drivers/net/ixgbe/ixgbe_main.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index 44a1cf040c3e..d6c21a386791 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -3176,9 +3176,16 @@ static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter)
3176 u32 mhadd, hlreg0; 3176 u32 mhadd, hlreg0;
3177 3177
3178 /* Decide whether to use packet split mode or not */ 3178 /* Decide whether to use packet split mode or not */
3179 /* On by default */
3180 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED;
3181
3179 /* Do not use packet split if we're in SR-IOV Mode */ 3182 /* Do not use packet split if we're in SR-IOV Mode */
3180 if (!adapter->num_vfs) 3183 if (adapter->num_vfs)
3181 adapter->flags |= IXGBE_FLAG_RX_PS_ENABLED; 3184 adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
3185
3186 /* Disable packet split due to 82599 erratum #45 */
3187 if (hw->mac.type == ixgbe_mac_82599EB)
3188 adapter->flags &= ~IXGBE_FLAG_RX_PS_ENABLED;
3182 3189
3183 /* Set the RX buffer length according to the mode */ 3190 /* Set the RX buffer length according to the mode */
3184 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) { 3191 if (adapter->flags & IXGBE_FLAG_RX_PS_ENABLED) {