LXR linux/include/uapi/linux/errqueue.h

   1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2#ifndef _UAPI_LINUX_ERRQUEUE_H
   3#define _UAPI_LINUX_ERRQUEUE_H
   4
   5#include <linux/types.h>
   6#include <linux/time_types.h>
   7
   8/* RFC 4884: return offset to extension struct + validation */
   9struct sock_ee_data_rfc4884 {
  10        __u16   len;
  11        __u8    flags;
  12        __u8    reserved;
  13};
  14
  15struct sock_extended_err {
  16        __u32   ee_errno;       
  17        __u8    ee_origin;
  18        __u8    ee_type;
  19        __u8    ee_code;
  20        __u8    ee_pad;
  21        __u32   ee_info;
  22        union   {
  23                __u32   ee_data;
  24                struct sock_ee_data_rfc4884 ee_rfc4884;
  25        };
  26};
  27
  28#define SO_EE_ORIGIN_NONE       0
  29#define SO_EE_ORIGIN_LOCAL      1
  30#define SO_EE_ORIGIN_ICMP       2
  31#define SO_EE_ORIGIN_ICMP6      3
  32#define SO_EE_ORIGIN_TXSTATUS   4
  33#define SO_EE_ORIGIN_ZEROCOPY   5
  34#define SO_EE_ORIGIN_TXTIME     6
  35#define SO_EE_ORIGIN_TIMESTAMPING SO_EE_ORIGIN_TXSTATUS
  36
  37#define SO_EE_OFFENDER(ee)      ((struct sockaddr*)((ee)+1))
  38
  39#define SO_EE_CODE_ZEROCOPY_COPIED      1
  40
  41#define SO_EE_CODE_TXTIME_INVALID_PARAM 1
  42#define SO_EE_CODE_TXTIME_MISSED        2
  43
  44#define SO_EE_RFC4884_FLAG_INVALID      1
  45
  46/**
  47 *      struct scm_timestamping - timestamps exposed through cmsg
  48 *
  49 *      The timestamping interfaces SO_TIMESTAMPING, MSG_TSTAMP_*
  50 *      communicate network timestamps by passing this struct in a cmsg with
  51 *      recvmsg(). See Documentation/networking/timestamping.rst for details.
  52 *      User space sees a timespec definition that matches either
  53 *      __kernel_timespec or __kernel_old_timespec, in the kernel we
  54 *      require two structure definitions to provide both.
  55 */
  56struct scm_timestamping {
  57#ifdef __KERNEL__
  58        struct __kernel_old_timespec ts[3];
  59#else
  60        struct timespec ts[3];
  61#endif
  62};
  63
  64struct scm_timestamping64 {
  65        struct __kernel_timespec ts[3];
  66};
  67
  68/* The type of scm_timestamping, passed in sock_extended_err ee_info.
  69 * This defines the type of ts[0]. For SCM_TSTAMP_SND only, if ts[0]
  70 * is zero, then this is a hardware timestamp and recorded in ts[2].
  71 */
  72enum {
  73        SCM_TSTAMP_SND,         /* driver passed skb to NIC, or HW */
  74        SCM_TSTAMP_SCHED,       /* data entered the packet scheduler */
  75        SCM_TSTAMP_ACK,         /* data acknowledged by peer */
  76};
  77
  78#endif /* _UAPI_LINUX_ERRQUEUE_H */
  79