i40e: Workaround fix for mss < 256 issue

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[ Upstream commit 4f2f017c61 ]

HW/NVM sets a limit of no less than 256 bytes for MSS. Stack can send as
low as 76 bytes MSS. This patch lowers the HW limit to 64 bytes to avoid
MDDs from firing and causing a reset when the MSS is lower than 256.

Change-ID: I36b500a6bb227d283c3e321a7718e0672b11fab0
Signed-off-by: Anjali Singhai Jain <anjali.singhai@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Anjali Singhai Jain 2015-10-21 19:47:07 -04:00 • committed by Greg Kroah-Hartman

parent 2cb99ded2f

commit 410d31b9ff

1 changed files with 27 additions and 0 deletions

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drivers/net/ethernet/intel/i40e/i40e_main.c

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