LINUX_B9600
mask = LINUX_B9600; /* XXX default value should this be 0? */
LINUX_B2400, LINUX_B4800, LINUX_B9600, LINUX_B19200, LINUX_B38400,
mask = LINUX_B9600; /* XXX default value should this be 0? */
mask = LINUX_B9600; /* XXX default value */