igb: Allow asymmetric configuration of MTU versus Rx frame size

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Since the igb driver is using page based receive there is no point in
limiting the Rx capabilities of the device.  The driver can receive 9K
jumbo frames at all times.  The only changes needed due to MTU changes are
updates for the FIFO sizes and flow-control watermarks.

Update the maximum frame size to reflect the 9.5K limitation of the
hardware, and replace all instances of max_frame_size with
MAX_JUMBO_FRAME_SIZE when referring to an Rx FIFO or frame.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

...

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Alexander Duyck 2016-01-06 23:10:39 -08:00 • committed by Jeff Kirsher

parent 832e821c51

commit 45693bcb00

2 changed files with 42 additions and 68 deletions

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3

drivers/net/ethernet/intel/igb/e1000_defines.h

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107

drivers/net/ethernet/intel/igb/igb_main.c

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