PPPIOCSDEBUG (reference) in projects: linux-4.4.14

104 #define PPPIOCSDEBUG	_IOW('t', 64, int)	/* Set debug level */  macro

371 * PPPIOCSDEBUG sets the debug flags for the interface to the value in

588 	case PPPIOCSDEBUG:  in isdn_ppp_ioctl()

/linux-4.4.14/include/uapi/linux/
D	ppp-ioctl.h	`104 #define PPPIOCSDEBUG _IOW('t', 64, int) /* Set debug level */ macro`
/linux-4.4.14/fs/
D	compat_ioctl.c	`1006 COMPATIBLE_IOCTL(PPPIOCSDEBUG)`
/linux-4.4.14/Documentation/networking/
D	ppp_generic.txt	`371 * PPPIOCSDEBUG sets the debug flags for the interface to the value in`
/linux-4.4.14/drivers/net/ppp/
D	ppp_generic.c	`695 case PPPIOCSDEBUG: in ppp_ioctl()`
/linux-4.4.14/drivers/isdn/i4l/
D	isdn_ppp.c	`588 case PPPIOCSDEBUG: in isdn_ppp_ioctl()`