Symbol: E1000_TXDCTL_WTHRESH
usr/src/grub/grub-0.97/netboot/e1000_hw.h
1283
#define E1000_TXDCTL_WTHRESH 0x00FF0000 /* TXDCTL Writeback Threshold */
usr/src/uts/common/io/e1000api/e1000_defines.h
673
#define E1000_TXDCTL_WTHRESH 0x003F0000 /* TXDCTL Writeback Threshold */