MAC_MAX_MTU 27 drivers/net/ethernet/hisilicon/hns/hns_dsaf_rcb.h #define HNS_RCB_MAX_PKT_SIZE MAC_MAX_MTU MAC_MAX_MTU 2358 drivers/net/ethernet/hisilicon/hns/hns_enet.c ndev->max_mtu = MAC_MAX_MTU -