xref: /linux/include/uapi/linux/errqueue.h (revision 307797159ac25fe5a2048bf5c6a5718298edca57)
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_TXTIME	6
24 #define SO_EE_ORIGIN_TIMESTAMPING SO_EE_ORIGIN_TXSTATUS
25 
26 #define SO_EE_OFFENDER(ee)	((struct sockaddr*)((ee)+1))
27 
28 #define SO_EE_CODE_ZEROCOPY_COPIED	1
29 
30 #define SO_EE_CODE_TXTIME_INVALID_PARAM	1
31 #define SO_EE_CODE_TXTIME_MISSED	2
32 
33 /**
34  *	struct scm_timestamping - timestamps exposed through cmsg
35  *
36  *	The timestamping interfaces SO_TIMESTAMPING, MSG_TSTAMP_*
37  *	communicate network timestamps by passing this struct in a cmsg with
38  *	recvmsg(). See Documentation/networking/timestamping.txt for details.
39  */
40 struct scm_timestamping {
41 	struct timespec ts[3];
42 };
43 
44 /* The type of scm_timestamping, passed in sock_extended_err ee_info.
45  * This defines the type of ts[0]. For SCM_TSTAMP_SND only, if ts[0]
46  * is zero, then this is a hardware timestamp and recorded in ts[2].
47  */
48 enum {
49 	SCM_TSTAMP_SND,		/* driver passed skb to NIC, or HW */
50 	SCM_TSTAMP_SCHED,	/* data entered the packet scheduler */
51 	SCM_TSTAMP_ACK,		/* data acknowledged by peer */
52 };
53 
54 #endif /* _UAPI_LINUX_ERRQUEUE_H */
55