FC_DEFAULT_HI_THRESH 2431 dev/pci/if_em_hw.h #define FC_DEFAULT_HI_THRESH        (0x8000)    /* 32KB */
FC_DEFAULT_HI_THRESH  704 dev/pci/ixgb_hw.h #define FC_DEFAULT_HI_THRESH        (0x8000)	/* 32KB */