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
   7 struct sock_extended_err {
   8         __u32   ee_errno;
   9         __u8    ee_origin;
  10         __u8    ee_type;
  11         __u8    ee_code;
  12         __u8    ee_pad;
  13         __u32   ee_info;
  14         __u32   ee_data;
  15 };
  16
  17 #define SO_EE_ORIGIN_NONE       0
  18 #define SO_EE_ORIGIN_LOCAL      1
  19 #define SO_EE_ORIGIN_ICMP       2
  20 #define SO_EE_ORIGIN_ICMP6      3
  21 #define SO_EE_ORIGIN_TXSTATUS   4
  22 #define SO_EE_ORIGIN_ZEROCOPY   5
  23 #define SO_EE_ORIGIN_TIMESTAMPING SO_EE_ORIGIN_TXSTATUS
  24
  25 #define SO_EE_OFFENDER(ee)      ((struct sockaddr*)((ee)+1))
  26
  27 #define SO_EE_CODE_ZEROCOPY_COPIED      1
  28
  29 /**
  30  *      struct scm_timestamping - timestamps exposed through cmsg
  31  *
  32  *      The timestamping interfaces SO_TIMESTAMPING, MSG_TSTAMP_*
  33  *      communicate network timestamps by passing this struct in a cmsg with
  34  *      recvmsg(). See Documentation/networking/timestamping.txt for details.
  35  */
  36 struct scm_timestamping {
  37         struct timespec ts[3];
  38 };
  39
  40 /* The type of scm_timestamping, passed in sock_extended_err ee_info.
  41  * This defines the type of ts[0]. For SCM_TSTAMP_SND only, if ts[0]
  42  * is zero, then this is a hardware timestamp and recorded in ts[2].
  43  */
  44 enum {
  45         SCM_TSTAMP_SND,         /* driver passed skb to NIC, or HW */
  46         SCM_TSTAMP_SCHED,       /* data entered the packet scheduler */
  47         SCM_TSTAMP_ACK,         /* data acknowledged by peer */
  48 };
  49
  50 #endif /* _UAPI_LINUX_ERRQUEUE_H */