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igb: disable IPv6 extension header processing 

Disable IPv6 extension header processing as per hardware errata.

Also fix copyright date.

Signed-off-by: Todd Fujinaka <todd.fujinaka@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Todd Fujinaka 2015-04-17 11:24:38 -07:00 committed by Jeff Kirsher
parent 011cb197a8
commit 8d0a88a959
2 changed files with 10 additions and 5 deletions
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12
drivers/net/ethernet/intel/igb/e1000_82575.c
View File

@ -1,5 +1,5 @@
/* Intel(R) Gigabit Ethernet Linux driver
* Copyright(c) 2007-2014 Intel Corporation.
* Copyright(c) 2007-2015 Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
@ -1900,8 +1900,8 @@ static void igb_clear_hw_cntrs_82575(struct e1000_hw *hw)
* igb_rx_fifo_flush_82575 - Clean rx fifo after RX enable
* @hw: pointer to the HW structure
*
* After rx enable if managability is enabled then there is likely some
* bad data at the start of the fifo and possibly in the DMA fifo. This
* After rx enable if manageability is enabled then there is likely some
* bad data at the start of the fifo and possibly in the DMA fifo. This
* function clears the fifos and flushes any packets that came in as rx was
* being enabled.
**/
@ -1910,6 +1910,11 @@ void igb_rx_fifo_flush_82575(struct e1000_hw *hw)
u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled;
int i, ms_wait;
/* disable IPv6 options as per hardware errata */
rfctl = rd32(E1000_RFCTL);
rfctl |= E1000_RFCTL_IPV6_EX_DIS;
wr32(E1000_RFCTL, rfctl);
if (hw->mac.type != e1000_82575 ||
!(rd32(E1000_MANC) & E1000_MANC_RCV_TCO_EN))
return;
@ -1937,7 +1942,6 @@ void igb_rx_fifo_flush_82575(struct e1000_hw *hw)
* incoming packets are rejected. Set enable and wait 2ms so that
* any packet that was coming in as RCTL.EN was set is flushed
*/
rfctl = rd32(E1000_RFCTL);
wr32(E1000_RFCTL, rfctl & ~E1000_RFCTL_LEF);
rlpml = rd32(E1000_RLPML);

3
drivers/net/ethernet/intel/igb/e1000_defines.h
View File

@ -344,7 +344,8 @@
#define E1000_RXCSUM_PCSD 0x00002000 /* packet checksum disabled */
/* Header split receive */
#define E1000_RFCTL_LEF 0x00040000
#define E1000_RFCTL_IPV6_EX_DIS 0x00010000
#define E1000_RFCTL_LEF 0x00040000
/* Collision related configuration parameters */
#define E1000_COLLISION_THRESHOLD 15