1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2025-2026 Pouria Mousavizadeh Tehrani <pouria@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _NET_IF_GENEVE_H_ 30 #define _NET_IF_GENEVE_H_ 31 32 #include <sys/types.h> 33 34 #ifdef _KERNEL 35 struct genevehdr { 36 #if BYTE_ORDER == LITTLE_ENDIAN 37 uint8_t geneve_optlen:6, /* Opt Len */ 38 geneve_ver:2; /* version */ 39 uint8_t geneve_flags:6, /* GENEVE Flags */ 40 geneve_critical:1, /* critical options present */ 41 geneve_control:1; /* control packets */ 42 #endif 43 #if BYTE_ORDER == BIG_ENDIAN 44 uint8_t geneve_ver:2, /* version */ 45 geneve_optlen:6; /* Opt Len */ 46 uint8_t geneve_control:1, /* control packets */ 47 geneve_critical:1, /* critical options present */ 48 geneve_flags:6; /* GENEVE Flags */ 49 #endif 50 uint16_t geneve_proto; /* protocol type (follows Ethertypes) */ 51 uint32_t geneve_vni; /* virtual network identifier */ 52 } __packed; 53 54 struct geneveudphdr { 55 struct udphdr geneve_udp; 56 struct genevehdr geneve_hdr; 57 } __packed; 58 #endif /* _KERNEL */ 59 60 struct geneve_params { 61 uint16_t ifla_proto; 62 }; 63 64 #define GENEVE_VNI_MAX (1 << 24) 65 66 #define GENEVE_PROTO_ETHER 0x6558 /* Ethernet */ 67 #define GENEVE_PROTO_INHERIT 0x0 /* inherit inner layer 3 headers */ 68 #define GENEVE_UDPPORT 6081 69 70 #endif /* _NET_IF_GENEVE_H_ */ 71