diff options
| author | Alexander Duyck <aduyck@mirantis.com> | 2016-01-06 23:10:39 -0800 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2016-02-15 16:27:21 -0800 |
| commit | 45693bcb00cbd379c373ab22ccd9a9d4755cc7ed (patch) | |
| tree | 1e40a93205813f2996bb874301dabdc3d1fb0506 /drivers/net/ethernet/intel/igb/e1000_defines.h | |
| parent | 832e821c51e381966464c8a0f30f12eb1514eba0 (diff) | |
igb: Allow asymmetric configuration of MTU versus Rx frame size
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>
Diffstat (limited to 'drivers/net/ethernet/intel/igb/e1000_defines.h')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/e1000_defines.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/igb/e1000_defines.h b/drivers/net/ethernet/intel/igb/e1000_defines.h index c3c598c347a9..e9f23ee8f15e 100644 --- a/drivers/net/ethernet/intel/igb/e1000_defines.h +++ b/drivers/net/ethernet/intel/igb/e1000_defines.h @@ -356,7 +356,8 @@ /* Ethertype field values */ #define ETHERNET_IEEE_VLAN_TYPE 0x8100 /* 802.3ac packet */ -#define MAX_JUMBO_FRAME_SIZE 0x3F00 +/* As per the EAS the maximum supported size is 9.5KB (9728 bytes) */ +#define MAX_JUMBO_FRAME_SIZE 0x2600 /* PBA constants */ #define E1000_PBA_34K 0x0022 |