56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
|
||
|
|
/*
|
||
|
|
* SR-IPv6 implementation
|
||
|
|
*
|
||
|
|
* Author:
|
||
|
|
* David Lebrun <david.lebrun@uclouvain.be>
|
||
|
|
*
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License
|
||
|
|
* as published by the Free Software Foundation; either version
|
||
|
|
* 2 of the License, or (at your option) any later version.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _UAPI_LINUX_SEG6_H
|
||
|
|
#define _UAPI_LINUX_SEG6_H
|
||
|
|
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/in6.h> /* For struct in6_addr. */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* SRH
|
||
|
|
*/
|
||
|
|
struct ipv6_sr_hdr {
|
||
|
|
__u8 nexthdr;
|
||
|
|
__u8 hdrlen;
|
||
|
|
__u8 type;
|
||
|
|
__u8 segments_left;
|
||
|
|
__u8 first_segment; /* Represents the last_entry field of SRH */
|
||
|
|
__u8 flags;
|
||
|
|
__u16 tag;
|
||
|
|
|
||
|
|
struct in6_addr segments[0];
|
||
|
|
};
|
||
|
|
|
||
|
|
#define SR6_FLAG1_PROTECTED (1 << 6)
|
||
|
|
#define SR6_FLAG1_OAM (1 << 5)
|
||
|
|
#define SR6_FLAG1_ALERT (1 << 4)
|
||
|
|
#define SR6_FLAG1_HMAC (1 << 3)
|
||
|
|
|
||
|
|
#define SR6_TLV_INGRESS 1
|
||
|
|
#define SR6_TLV_EGRESS 2
|
||
|
|
#define SR6_TLV_OPAQUE 3
|
||
|
|
#define SR6_TLV_PADDING 4
|
||
|
|
#define SR6_TLV_HMAC 5
|
||
|
|
|
||
|
|
#define sr_has_hmac(srh) ((srh)->flags & SR6_FLAG1_HMAC)
|
||
|
|
|
||
|
|
struct sr6_tlv {
|
||
|
|
__u8 type;
|
||
|
|
__u8 len;
|
||
|
|
__u8 data[0];
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|