The C and C++ Include Header Files

/usr/include/linux/errqueue.h


$ cat -n /usr/include/linux/errqueue.h

     1	/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
     2	#ifndef _LINUX_ERRQUEUE_H
     3	#define _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		struct timespec ts[3];
    58	};
    59	
    60	struct scm_timestamping64 {
    61		struct __kernel_timespec ts[3];
    62	};
    63	
    64	/* The type of scm_timestamping, passed in sock_extended_err ee_info.
    65	 * This defines the type of ts[0]. For SCM_TSTAMP_SND only, if ts[0]
    66	 * is zero, then this is a hardware timestamp and recorded in ts[2].
    67	 */
    68	enum {
    69		SCM_TSTAMP_SND,		/* driver passed skb to NIC, or HW */
    70		SCM_TSTAMP_SCHED,	/* data entered the packet scheduler */
    71		SCM_TSTAMP_ACK,		/* data acknowledged by peer */
    72	};
    73	
    74	#endif /* _LINUX_ERRQUEUE_H */