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 */
9 struct sock_ee_data_rfc4884 {
10 __u16 len;
11 __u8 flags;
12 __u8 reserved;
13 };
14
15 struct 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 */
56 struct scm_timestamping {
57 #ifdef __KERNEL__
58 struct __kernel_old_timespec ts[3];
59 #else
60 struct timespec ts[3];
61 #endif
62 };
63
64 struct 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 */
72 enum {
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
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