CSR18_SIFS 237 drivers/net/wireless/ralink/rt2x00/rt2400pci.h #define CSR18_SIFS FIELD32(0x0000ffff) CSR18_SIFS 314 drivers/net/wireless/ralink/rt2x00/rt2500pci.h #define CSR18_SIFS FIELD32(0x000001ff)