From: Jacob Keller <jacob.e.keller@xxxxxxxxx> [ Upstream commit 8c7ee6d2cacc7794a91875ef5fd8284b4a900d8c ] 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@xxxxxxxxx> Signed-off-by: Jacob Keller <jacob.e.keller@xxxxxxxxx> Acked-by: Bruce Allan <bruce.w.allan@xxxxxxxxx> Tested-by: Krishneil Singh <krishneil.k.singh@xxxxxxxxx> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@xxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx> --- drivers/net/ethernet/intel/fm10k/fm10k.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/intel/fm10k/fm10k.h b/drivers/net/ethernet/intel/fm10k/fm10k.h index 1444020..48809e5 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 -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html