/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _UAPI_LINUX_ERRQUEUE_H
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#define _UAPI_LINUX_ERRQUEUE_H
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#include <linux/types.h>
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#include <linux/time_types.h>
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/* RFC 4884: return offset to extension struct + validation */
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struct sock_ee_data_rfc4884 {
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__u16 len;
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__u8 flags;
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__u8 reserved;
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};
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struct sock_extended_err {
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__u32 ee_errno;
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__u8 ee_origin;
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__u8 ee_type;
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__u8 ee_code;
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__u8 ee_pad;
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__u32 ee_info;
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union {
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__u32 ee_data;
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struct sock_ee_data_rfc4884 ee_rfc4884;
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};
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};
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#define SO_EE_ORIGIN_NONE 0
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#define SO_EE_ORIGIN_LOCAL 1
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#define SO_EE_ORIGIN_ICMP 2
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#define SO_EE_ORIGIN_ICMP6 3
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#define SO_EE_ORIGIN_TXSTATUS 4
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#define SO_EE_ORIGIN_ZEROCOPY 5
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#define SO_EE_ORIGIN_TXTIME 6
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#define SO_EE_ORIGIN_TIMESTAMPING SO_EE_ORIGIN_TXSTATUS
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#define SO_EE_OFFENDER(ee) ((struct sockaddr*)((ee)+1))
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#define SO_EE_CODE_ZEROCOPY_COPIED 1
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#define SO_EE_CODE_TXTIME_INVALID_PARAM 1
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#define SO_EE_CODE_TXTIME_MISSED 2
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#define SO_EE_RFC4884_FLAG_INVALID 1
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/**
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* struct scm_timestamping - timestamps exposed through cmsg
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*
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* The timestamping interfaces SO_TIMESTAMPING, MSG_TSTAMP_*
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* communicate network timestamps by passing this struct in a cmsg with
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* recvmsg(). See Documentation/networking/timestamping.rst for details.
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* User space sees a timespec definition that matches either
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* __kernel_timespec or __kernel_old_timespec, in the kernel we
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* require two structure definitions to provide both.
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*/
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struct scm_timestamping {
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#ifdef __KERNEL__
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struct __kernel_old_timespec ts[3];
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#else
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struct timespec ts[3];
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#endif
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};
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struct scm_timestamping64 {
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struct __kernel_timespec ts[3];
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};
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/* The type of scm_timestamping, passed in sock_extended_err ee_info.
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* This defines the type of ts[0]. For SCM_TSTAMP_SND only, if ts[0]
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* is zero, then this is a hardware timestamp and recorded in ts[2].
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*/
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enum {
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SCM_TSTAMP_SND, /* driver passed skb to NIC, or HW */
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SCM_TSTAMP_SCHED, /* data entered the packet scheduler */
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SCM_TSTAMP_ACK, /* data acknowledged by peer */
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};
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#endif /* _UAPI_LINUX_ERRQUEUE_H */
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