include/uapi/linux/ppp_defs.h

Source file repositories/reference/linux-study-clean/include/uapi/linux/ppp_defs.h

File Facts

System
Linux kernel
Corpus path
include/uapi/linux/ppp_defs.h
Extension
.h
Size
5572 bytes
Lines
166
Domain
Core OS
Bucket
Core Kernel Interface
Inferred role
Core OS: implementation source
Status
source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

struct pppstat	{
    __u32	ppp_discards;	/* # frames discarded */

    __u32	ppp_ibytes;	/* bytes received */
    __u32	ppp_ioctects;	/* bytes received not in error */
    __u32	ppp_ipackets;	/* packets received */
    __u32	ppp_ierrors;	/* receive errors */
    __u32	ppp_ilqrs;	/* # LQR frames received */

    __u32	ppp_obytes;	/* raw bytes sent */
    __u32	ppp_ooctects;	/* frame bytes sent */
    __u32	ppp_opackets;	/* packets sent */
    __u32	ppp_oerrors;	/* transmit errors */ 
    __u32	ppp_olqrs;	/* # LQR frames sent */
};

struct vjstat {
    __u32	vjs_packets;	/* outbound packets */
    __u32	vjs_compressed;	/* outbound compressed packets */
    __u32	vjs_searches;	/* searches for connection state */
    __u32	vjs_misses;	/* times couldn't find conn. state */
    __u32	vjs_uncompressedin; /* inbound uncompressed packets */
    __u32	vjs_compressedin;   /* inbound compressed packets */
    __u32	vjs_errorin;	/* inbound unknown type packets */
    __u32	vjs_tossed;	/* inbound packets tossed because of error */
};

struct compstat {
    __u32	unc_bytes;	/* total uncompressed bytes */
    __u32	unc_packets;	/* total uncompressed packets */
    __u32	comp_bytes;	/* compressed bytes */
    __u32	comp_packets;	/* compressed packets */
    __u32	inc_bytes;	/* incompressible bytes */
    __u32	inc_packets;	/* incompressible packets */

    /* the compression ratio is defined as in_count / bytes_out */
    __u32       in_count;	/* Bytes received */
    __u32       bytes_out;	/* Bytes transmitted */

    double	ratio;		/* not computed in kernel. */
};

struct ppp_stats {
    struct pppstat	p;	/* basic PPP statistics */
    struct vjstat	vj;	/* VJ header compression statistics */
};

struct ppp_comp_stats {
    struct compstat	c;	/* packet compression statistics */
    struct compstat	d;	/* packet decompression statistics */
};

/*
 * The following structure records the time in seconds since
 * the last NP packet was sent or received.
 *
 * Linux implements both 32-bit and 64-bit time_t versions
 * for compatibility with user space that defines ppp_idle
 * based on the libc time_t.
 */
struct ppp_idle {
    __kernel_old_time_t xmit_idle;	/* time since last NP packet sent */
    __kernel_old_time_t recv_idle;	/* time since last NP packet received */
};

struct ppp_idle32 {
    __s32 xmit_idle;		/* time since last NP packet sent */
    __s32 recv_idle;		/* time since last NP packet received */
};

struct ppp_idle64 {
    __s64 xmit_idle;		/* time since last NP packet sent */
    __s64 recv_idle;		/* time since last NP packet received */
};

#endif /* _UAPI_PPP_DEFS_H_ */

Annotation

Implementation Notes