ICE_ETH_PKT_HDR_PAD
#define ICE_MAX_MTU (ICE_AQ_SET_MAC_FRAME_SIZE_MAX - ICE_ETH_PKT_HDR_PAD)
unsigned int frame_size = vsi->netdev->mtu + ICE_ETH_PKT_HDR_PAD;
if (new_mtu + ICE_ETH_PKT_HDR_PAD > frame_size) {
frame_size - ICE_ETH_PKT_HDR_PAD);