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