root/include/uapi/linux/errqueue.h

INCLUDED FROM

#ifndef _UAPI_LINUX_ERRQUEUE_H
#define _UAPI_LINUX_ERRQUEUE_H

#include <linux/types.h>

struct sock_extended_err {
        __u32   ee_errno;       
        __u8    ee_origin;
        __u8    ee_type;
        __u8    ee_code;
        __u8    ee_pad;
        __u32   ee_info;
        __u32   ee_data;
};

#define SO_EE_ORIGIN_NONE       0
#define SO_EE_ORIGIN_LOCAL      1
#define SO_EE_ORIGIN_ICMP       2
#define SO_EE_ORIGIN_ICMP6      3
#define SO_EE_ORIGIN_TXSTATUS   4
#define SO_EE_ORIGIN_TIMESTAMPING SO_EE_ORIGIN_TXSTATUS

#define SO_EE_OFFENDER(ee)      ((struct sockaddr*)((ee)+1))

/**
 *      struct scm_timestamping - timestamps exposed through cmsg
 *
 *      The timestamping interfaces SO_TIMESTAMPING, MSG_TSTAMP_*
 *      communicate network timestamps by passing this struct in a cmsg with
 *      recvmsg(). See Documentation/networking/timestamping.txt for details.
 */
struct scm_timestamping {
        struct timespec ts[3];
};

/* The type of scm_timestamping, passed in sock_extended_err ee_info.
 * This defines the type of ts[0]. For SCM_TSTAMP_SND only, if ts[0]
 * is zero, then this is a hardware timestamp and recorded in ts[2].
 */
enum {
        SCM_TSTAMP_SND,         /* driver passed skb to NIC, or HW */
        SCM_TSTAMP_SCHED,       /* data entered the packet scheduler */
        SCM_TSTAMP_ACK,         /* data acknowledged by peer */
};

#endif /* _UAPI_LINUX_ERRQUEUE_H */