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fe267a5590
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
138 lines
4.5 KiB
C
138 lines
4.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* Copyright (c) 2014 Andrey V. Elsukov <ae@FreeBSD.org>
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* All rights reserved
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Heiko W.Rupp <hwr@pilhuhn.de>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* $NetBSD: if_gre.h,v 1.13 2003/11/10 08:51:52 wiz Exp $
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* $FreeBSD$
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*/
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#ifndef _NET_IF_GRE_H_
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#define _NET_IF_GRE_H_
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#ifdef _KERNEL
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/* GRE header according to RFC 2784 and RFC 2890 */
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struct grehdr {
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uint16_t gre_flags; /* GRE flags */
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#define GRE_FLAGS_CP 0x8000 /* checksum present */
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#define GRE_FLAGS_KP 0x2000 /* key present */
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#define GRE_FLAGS_SP 0x1000 /* sequence present */
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#define GRE_FLAGS_MASK (GRE_FLAGS_CP|GRE_FLAGS_KP|GRE_FLAGS_SP)
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uint16_t gre_proto; /* protocol type */
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uint32_t gre_opts[0]; /* optional fields */
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} __packed;
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#ifdef INET
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struct greip {
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struct ip gi_ip;
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struct grehdr gi_gre;
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} __packed;
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#endif
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#ifdef INET6
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struct greip6 {
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struct ip6_hdr gi6_ip6;
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struct grehdr gi6_gre;
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} __packed;
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#endif
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struct gre_softc {
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struct ifnet *gre_ifp;
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LIST_ENTRY(gre_softc) gre_list;
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struct rmlock gre_lock;
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int gre_family; /* AF of delivery header */
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uint32_t gre_iseq;
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uint32_t gre_oseq;
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uint32_t gre_key;
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uint32_t gre_options;
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u_int gre_fibnum;
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u_int gre_hlen; /* header size */
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union {
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void *hdr;
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#ifdef INET
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struct greip *gihdr;
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#endif
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#ifdef INET6
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struct greip6 *gi6hdr;
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#endif
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} gre_uhdr;
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const struct encaptab *gre_ecookie;
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};
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#define GRE2IFP(sc) ((sc)->gre_ifp)
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#define GRE_LOCK_INIT(sc) rm_init(&(sc)->gre_lock, "gre softc")
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#define GRE_LOCK_DESTROY(sc) rm_destroy(&(sc)->gre_lock)
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#define GRE_RLOCK_TRACKER struct rm_priotracker gre_tracker
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#define GRE_RLOCK(sc) rm_rlock(&(sc)->gre_lock, &gre_tracker)
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#define GRE_RUNLOCK(sc) rm_runlock(&(sc)->gre_lock, &gre_tracker)
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#define GRE_RLOCK_ASSERT(sc) rm_assert(&(sc)->gre_lock, RA_RLOCKED)
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#define GRE_WLOCK(sc) rm_wlock(&(sc)->gre_lock)
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#define GRE_WUNLOCK(sc) rm_wunlock(&(sc)->gre_lock)
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#define GRE_WLOCK_ASSERT(sc) rm_assert(&(sc)->gre_lock, RA_WLOCKED)
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#define gre_hdr gre_uhdr.hdr
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#define gre_gihdr gre_uhdr.gihdr
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#define gre_gi6hdr gre_uhdr.gi6hdr
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#define gre_oip gre_gihdr->gi_ip
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#define gre_oip6 gre_gi6hdr->gi6_ip6
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int gre_input(struct mbuf **, int *, int);
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#ifdef INET
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int in_gre_attach(struct gre_softc *);
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int in_gre_output(struct mbuf *, int, int);
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#endif
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#ifdef INET6
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int in6_gre_attach(struct gre_softc *);
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int in6_gre_output(struct mbuf *, int, int);
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#endif
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/*
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* CISCO uses special type for GRE tunnel created as part of WCCP
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* connection, while in fact those packets are just IPv4 encapsulated
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* into GRE.
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*/
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#define ETHERTYPE_WCCP 0x883E
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#endif /* _KERNEL */
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#define GRESADDRS _IOW('i', 101, struct ifreq)
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#define GRESADDRD _IOW('i', 102, struct ifreq)
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#define GREGADDRS _IOWR('i', 103, struct ifreq)
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#define GREGADDRD _IOWR('i', 104, struct ifreq)
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#define GRESPROTO _IOW('i' , 105, struct ifreq)
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#define GREGPROTO _IOWR('i', 106, struct ifreq)
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#define GREGKEY _IOWR('i', 107, struct ifreq)
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#define GRESKEY _IOW('i', 108, struct ifreq)
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#define GREGOPTS _IOWR('i', 109, struct ifreq)
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#define GRESOPTS _IOW('i', 110, struct ifreq)
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#define GRE_ENABLE_CSUM 0x0001
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#define GRE_ENABLE_SEQ 0x0002
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#define GRE_OPTMASK (GRE_ENABLE_CSUM|GRE_ENABLE_SEQ)
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#endif /* _NET_IF_GRE_H_ */
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