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Commit 493004d0 authored by David Ertman's avatar David Ertman Committed by Jeff Kirsher
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e1000e: Fix CRC errors with jumbo traffic 



Modifying the jumbo frame workaround for 82579, i217 and i218 client parts
to increase the gap between the read and write pointers in the Tx FIFO.

Signed-off-by: default avatarDave Ertman <david.m.ertman@intel.com>
Tested-by: default avatarAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
parent e90dd264

drivers/net/ethernet/intel/e1000e/defines.h

+1 −0
Original line number Diff line number Diff line
@@ -342,6 +342,7 @@ 
#define E1000_TIPG_IPGR2_SHIFT  20



#define MAX_JUMBO_FRAME_SIZE    0x3F00

#define E1000_TX_PTR_GAP		0x1F



/* Extended Configuration Control and Size */

#define E1000_EXTCNF_CTRL_MDIO_SW_OWNERSHIP      0x00000020

drivers/net/ethernet/intel/e1000e/ich8lan.c

+1 −1
Original line number Diff line number Diff line
@@ -2444,7 +2444,7 @@ s32 e1000_lv_jumbo_workaround_ich8lan(struct e1000_hw *hw, bool enable) 
			return ret_val;

		e1e_rphy(hw, PHY_REG(776, 20), &data);

		data &= ~(0x3FF << 2);

		data |= (0x1A << 2);

		data |= (E1000_TX_PTR_GAP << 2);

		ret_val = e1e_wphy(hw, PHY_REG(776, 20), data);

		if (ret_val)

			return ret_val;