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 <matthew.vick@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index e86b524..ab4505c 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -2939,6 +2939,7 @@
/* Enable Extended Status in all Receive Descriptors */
rfctl = er32(RFCTL);
rfctl |= E1000_RFCTL_EXTEN;
+ ew32(RFCTL, rfctl);
/*
* 82571 and greater support packet-split where the protocol
@@ -2964,13 +2965,6 @@
if (adapter->rx_ps_pages) {
u32 psrctl = 0;
- /*
- * disable packet split support for IPv6 extension headers,
- * because some malformed IPv6 headers can hang the Rx
- */
- rfctl |= (E1000_RFCTL_IPV6_EX_DIS |
- E1000_RFCTL_NEW_IPV6_EXT_DIS);
-
/* Enable Packet split descriptors */
rctl |= E1000_RCTL_DTYP_PS;
@@ -3009,7 +3003,6 @@
*/
}
- ew32(RFCTL, rfctl);
ew32(RCTL, rctl);
/* just started the receive unit, no need to restart */
adapter->flags &= ~FLAG_RX_RESTART_NOW;