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| author |   Jacob Keller <jacob.e.keller@intel.com> | 2015-08-25 13:49:11 -0700 |
|---|---|---|
| committer |   Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2015-11-23 11:08:47 -0800 |
| commit | 8c7ee6d2cacc7794a91875ef5fd8284b4a900d8c (patch) | |
| tree | cc9ad543baeae04ba65ec13fefa5ef14346ba4d0 /drivers/net/ethernet/intel/fm10k | |
| parent | fm10k: do not assume VF always has 1 queue (diff) | |
| download | linux-dev-8c7ee6d2cacc7794a91875ef5fd8284b4a900d8c.tar.xz linux-dev-8c7ee6d2cacc7794a91875ef5fd8284b4a900d8c.zip | |
fm10k: Correct MTU for jumbo frames
Based on hardware testing, the host interface supports up to 15368 bytes
as the maximum frame size. To determine the correct MTU, we subtract 8
for the internal switch tag, 14 for the L2 header, and 4 for the
appended FCS header, resulting in 15342 bytes of payload for our maximum
MTU on jumbo frames.
Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Krishneil Singh <krishneil.k.singh@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/fm10k')
| -rw-r--r-- | drivers/net/ethernet/intel/fm10k/fm10k.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k.h b/drivers/net/ethernet/intel/fm10k/fm10k.h index 14440200499b..48809e5d3f79 100644 --- a/drivers/net/ethernet/intel/fm10k/fm10k.h +++ b/drivers/net/ethernet/intel/fm10k/fm10k.h @@ -33,7 +33,7 @@ #include "fm10k_pf.h" #include "fm10k_vf.h" -#define FM10K_MAX_JUMBO_FRAME_SIZE 15358 /* Maximum supported size 15K */ +#define FM10K_MAX_JUMBO_FRAME_SIZE 15342 /* Maximum supported size 15K */ #define MAX_QUEUES FM10K_MAX_QUEUES_PF |