Defined in 4 files as a macro:
- drivers/net/ethernet/intel/e1000/e1000_hw.h, line 1490 (as a macro)
- drivers/net/ethernet/intel/e1000e/defines.h, line 234 (as a macro)
- drivers/net/ethernet/intel/igb/e1000_defines.h, line 241 (as a macro)
- drivers/net/ethernet/intel/igbvf/defines.h, line 71 (as a macro)