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freebsd-ports/net/bird2/files/extra-patch-netlink-route/patch-sysdep_bsd-netlink_netlink-route.h
Marek Zarychta 8a57d5eba5 net/bird2: update 2.14 -> 2.15.1 
- Port was updated to the most recent version.
- Extra patches for fixing netlink headers were prepared (see PR 277618).
- The default flavor of the port for FreeBSD 14.0 and later is now "netlink".
  The rtsock flavor is still available as bird2-rtsock.
  There is no change for FreeBSD versions < 14.0. Here we still use rtsock
  as a default flavor.

Changelog: https://bird.network.cz/pipermail/bird-users/2024-March/017468.html
	   https://bird.network.cz/pipermail/bird-users/2024-March/017517.html

PR: 277891
2024-03-26 11:32:40 +01:00

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--- /dev/null 2024-03-22 15:39:07.538356000 +0100
+++ sysdep/bsd-netlink/netlink-route.h 2024-03-22 15:39:02.226088000 +0100
@@ -0,0 +1,367 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2022 Alexander V. Chernikov <melifaro@FreeBSD.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * Route-related (RTM_<NEW|DEL|GET>ROUTE) message header and attributes.
+ */
+
+#ifndef _NETLINK_ROUTE_ROUTE_H_
+#define _NETLINK_ROUTE_ROUTE_H_
+
+/* Base header for all of the relevant messages */
+struct rtmsg {
+ unsigned char rtm_family; /* address family */
+ unsigned char rtm_dst_len; /* Prefix length */
+ unsigned char rtm_src_len; /* Source prefix length (not used) */
+ unsigned char rtm_tos; /* Type of service (not used) */
+ unsigned char rtm_table; /* rtable id */
+ unsigned char rtm_protocol; /* Routing protocol id (RTPROT_) */
+ unsigned char rtm_scope; /* Route distance (RT_SCOPE_) */
+ unsigned char rtm_type; /* Route type (RTN_) */
+ unsigned rtm_flags; /* Route flags (RTM_F_) */
+};
+
+/*
+ * RFC 3549, 3.1.1, route type (rtm_type field).
+ */
+enum {
+ RTN_UNSPEC,
+ RTN_UNICAST, /* Unicast route */
+ RTN_LOCAL, /* Accept locally (not supported) */
+ RTN_BROADCAST, /* Accept locally as broadcast, send as broadcast */
+ RTN_ANYCAST, /* Accept locally as broadcast, but send as unicast */
+ RTN_MULTICAST, /* Multicast route */
+ RTN_BLACKHOLE, /* Drop traffic towards destination */
+ RTN_UNREACHABLE, /* Destination is unreachable */
+ RTN_PROHIBIT, /* Administratively prohibited */
+ RTN_THROW, /* Not in this table (not supported) */
+ RTN_NAT, /* Translate this address (not supported) */
+ RTN_XRESOLVE, /* Use external resolver (not supported) */
+ __RTN_MAX,
+};
+#define RTN_MAX (__RTN_MAX - 1)
+
+/*
+ * RFC 3549, 3.1.1, protocol (Identifies what/who added the route).
+ * Values larger than RTPROT_STATIC(4) are not interpreted by the
+ * kernel, they are just for user information.
+ */
+#define RTPROT_UNSPEC 0
+#define RTPROT_REDIRECT 1 /* Route installed by ICMP redirect */
+#define RTPROT_KERNEL 2 /* Route installed by kernel */
+#define RTPROT_BOOT 3 /* Route installed during boot */
+#define RTPROT_STATIC 4 /* Route installed by administrator */
+
+#define RTPROT_GATED 8
+#define RTPROT_RA 9
+#define RTPROT_MRT 1
+#define RTPROT_ZEBRA 11
+#define RTPROT_BIRD 12
+#define RTPROT_DNROUTED 13
+#define RTPROT_XORP 14
+#define RTPROT_NTK 15
+#define RTPROT_DHCP 16
+#define RTPROT_MROUTED 17
+#define RTPROT_KEEPALIVED 18
+#define RTPROT_BABEL 42
+#define RTPROT_OPENR 99
+#define RTPROT_BGP 186
+#define RTPROT_ISIS 187
+#define RTPROT_OSPF 188
+#define RTPROT_RIP 189
+#define RTPROT_EIGRP 192
+
+/*
+ * RFC 3549 3.1.1 Route scope (valid distance to destination).
+ *
+ * The values between RT_SCOPE_UNIVERSE(0) and RT_SCOPE_SITE(200)
+ * are available to the user.
+ */
+enum rt_scope_t {
+ RT_SCOPE_UNIVERSE = 0,
+ /* User defined values */
+ RT_SCOPE_SITE = 200,
+ RT_SCOPE_LINK = 253,
+ RT_SCOPE_HOST = 254,
+ RT_SCOPE_NOWHERE = 255
+};
+
+/*
+ * RFC 3549 3.1.1 Route flags (rtm_flags).
+ * Is a composition of RTNH_F flags (0x1..0x40 range), RTM_F flags (below)
+ * and per-protocol (IPv4/IPv6) flags.
+ */
+#define RTM_F_NOTIFY 0x00000100 /* not supported */
+#define RTM_F_CLONED 0x00000200 /* not supported */
+#define RTM_F_EQUALIZE 0x00000400 /* not supported */
+#define RTM_F_PREFIX 0x00000800 /* not supported */
+#define RTM_F_LOOKUP_TABLE 0x00001000 /* not supported */
+#define RTM_F_FIB_MATCH 0x00002000 /* not supported */
+#define RTM_F_OFFLOAD 0x00004000 /* not supported */
+#define RTM_F_TRAP 0x00008000 /* not supported */
+#define RTM_F_OFFLOAD_FAILED 0x20000000 /* not supported */
+
+/* Compatibility handling helpers */
+#ifndef _KERNEL
+#define NL_RTM_HDRLEN ((int)sizeof(struct rtmsg))
+#define RTM_RTA(_rtm) ((struct rtattr *)((char *)(_rtm) + NL_RTM_HDRLEN))
+#define RTM_PAYLOAD(_hdr) NLMSG_PAYLOAD((_hdr), NL_RTM_HDRLEN)
+#endif
+
+/*
+ * Routing table identifiers.
+ * FreeBSD route table numbering starts from 0, where 0 is a valid default routing table.
+ * Indicating "all tables" via netlink can be done by not including RTA_TABLE attribute
+ * and keeping rtm_table=0 (compatibility) or setting RTA_TABLE value to RT_TABLE_UNSPEC.
+ */
+#define RT_TABLE_MAIN 0 /* RT_DEFAULT_FIB */
+#define RT_TABLE_UNSPEC 0xFFFFFFFF /* RT_ALL_FIBS */
+
+enum rtattr_type_t {
+ NL_RTA_UNSPEC,
+ NL_RTA_DST = 1, /* binary, IPv4/IPv6 destination */
+ NL_RTA_SRC = 2, /* binary, preferred source address */
+ NL_RTA_IIF = 3, /* not supported */
+ NL_RTA_OIF = 4, /* u32, transmit ifindex */
+ NL_RTA_GATEWAY = 5, /* binary: IPv4/IPv6 gateway */
+ NL_RTA_PRIORITY = 6, /* not supported */
+ NL_RTA_PREFSRC = 7, /* not supported */
+ NL_RTA_METRICS = 8, /* nested, list of NL_RTAX* attrs */
+ NL_RTA_MULTIPATH = 9, /* binary, array of struct rtnexthop */
+ NL_RTA_PROTOINFO = 10, /* not supported / deprecated */
+ NL_RTA_KNH_ID = 10, /* u32, FreeBSD specific, kernel nexthop index */
+ NL_RTA_FLOW = 11, /* not supported */
+ NL_RTA_CACHEINFO = 12, /* not supported */
+ NL_RTA_SESSION = 13, /* not supported / deprecated */
+ NL_RTA_WEIGHT = 13, /* u32, FreeBSD specific, path weight */
+ NL_RTA_MP_ALGO = 14, /* not supported / deprecated */
+ NL_RTA_RTFLAGS = 14, /* u32, FreeBSD specific, path flags (RTF_)*/
+ NL_RTA_TABLE = 15, /* u32, fibnum */
+ NL_RTA_MARK = 16, /* not supported */
+ NL_RTA_MFC_STATS = 17, /* not supported */
+ NL_RTA_VIA = 18, /* binary, struct rtvia */
+ NL_RTA_NEWDST = 19, /* not supported */
+ NL_RTA_PREF = 20, /* not supported */
+ NL_RTA_ENCAP_TYPE = 21, /* not supported */
+ NL_RTA_ENCAP = 22, /* not supported */
+ NL_RTA_EXPIRES = 23, /* u32, seconds till expiration */
+ NL_RTA_PAD = 24, /* not supported */
+ NL_RTA_UID = 25, /* not supported */
+ NL_RTA_TTL_PROPAGATE = 26, /* not supported */
+ NL_RTA_IP_PROTO = 27, /* not supported */
+ NL_RTA_SPORT = 28, /* not supported */
+ NL_RTA_DPORT = 29, /* not supported */
+ NL_RTA_NH_ID = 30, /* u32, nexthop/nexthop group index */
+ __RTA_MAX
+};
+#define NL_RTA_MAX (__RTA_MAX - 1)
+
+/*
+ * Attributes that can be used as filters:
+ *
+ */
+
+#ifndef _KERNEL
+/*
+ * RTA_* space has clashes with rtsock namespace.
+ * Use NL_RTA_ prefix in the kernel and map to
+ * RTA_ for userland.
+ */
+#define RTA_UNSPEC NL_RTA_UNSPEC
+#define RTA_DST NL_RTA_DST
+#define RTA_SRC NL_RTA_SRC
+#define RTA_IIF NL_RTA_IIF
+#define RTA_OIF NL_RTA_OIF
+#define RTA_GATEWAY NL_RTA_GATEWAY
+#define RTA_PRIORITY NL_RTA_PRIORITY
+#define RTA_PREFSRC NL_RTA_PREFSRC
+#define RTA_METRICS NL_RTA_METRICS
+#define RTA_MULTIPATH NL_RTA_MULTIPATH
+#define RTA_PROTOINFO NL_RTA_PROTOINFO
+#define RTA_KNH_ID NL_RTA_KNH_ID
+#define RTA_FLOW NL_RTA_FLOW
+#define RTA_CACHEINFO NL_RTA_CACHEINFO
+#define RTA_SESSION NL_RTA_SESSION
+#define RTA_MP_ALGO NL_RTA_MP_ALGO
+#define RTA_TABLE NL_RTA_TABLE
+#define RTA_MARK NL_RTA_MARK
+#define RTA_MFC_STATS NL_RTA_MFC_STATS
+#define RTA_VIA NL_RTA_VIA
+#define RTA_NEWDST NL_RTA_NEWDST
+#define RTA_PREF NL_RTA_PREF
+#define RTA_ENCAP_TYPE NL_RTA_ENCAP_TYPE
+#define RTA_ENCAP NL_RTA_ENCAP
+#define RTA_EXPIRES NL_RTA_EXPIRES
+#define RTA_PAD NL_RTA_PAD
+#define RTA_UID NL_RTA_UID
+#define RTA_TTL_PROPAGATE NL_RTA_TTL_PROPAGATE
+#define RTA_IP_PROTO NL_RTA_IP_PROTO
+#define RTA_SPORT NL_RTA_SPORT
+#define RTA_DPORT NL_RTA_DPORT
+#define RTA_NH_ID NL_RTA_NH_ID
+#define RTA_MAX NL_RTA_MAX
+#endif
+
+/* route attribute header */
+struct rtattr {
+ unsigned short rta_len;
+ unsigned short rta_type;
+};
+
+#define NL_RTA_ALIGN_SIZE NL_ITEM_ALIGN_SIZE
+#define NL_RTA_ALIGN NL_ITEM_ALIGN
+#define NL_RTA_HDRLEN ((int)sizeof(struct rtattr))
+#define NL_RTA_DATA_LEN(_rta) ((int)((_rta)->rta_len - NL_RTA_HDRLEN))
+#define NL_RTA_DATA(_rta) NL_ITEM_DATA(_rta, NL_RTA_HDRLEN)
+#define NL_RTA_DATA_CONST(_rta) NL_ITEM_DATA_CONST(_rta, NL_RTA_HDRLEN)
+
+/* Compatibility attribute handling helpers */
+#ifndef _KERNEL
+#define RTA_ALIGNTO NL_RTA_ALIGN_SIZE
+#define RTA_ALIGN(_len) NL_RTA_ALIGN(_len)
+#define _RTA_LEN(_rta) ((int)(_rta)->rta_len)
+#define _RTA_ALIGNED_LEN(_rta) RTA_ALIGN(_RTA_LEN(_rta))
+#define RTA_OK(_rta, _len) NL_ITEM_OK(_rta, _len, NL_RTA_HDRLEN, _RTA_LEN)
+#define RTA_NEXT(_rta, _len) NL_ITEM_ITER(_rta, _len, _RTA_ALIGNED_LEN)
+#define RTA_LENGTH(_len) (NL_RTA_HDRLEN + (_len))
+#define RTA_SPACE(_len) RTA_ALIGN(RTA_LENGTH(_len))
+#define RTA_DATA(_rta) NL_RTA_DATA(_rta)
+#define RTA_PAYLOAD(_rta) ((int)(_RTA_LEN(_rta) - NL_RTA_HDRLEN))
+#endif
+
+/* RTA attribute headers */
+
+/* RTA_VIA */
+struct rtvia {
+ sa_family_t rtvia_family;
+ uint8_t rtvia_addr[0];
+};
+
+/*
+ * RTA_METRICS is a nested attribute, consisting of a list of
+ * TLVs with types defined below.
+ */
+ enum {
+ NL_RTAX_UNSPEC,
+ NL_RTAX_LOCK = 1, /* not supported */
+ NL_RTAX_MTU = 2, /* desired path MTU */
+ NL_RTAX_WINDOW = 3, /* not supported */
+ NL_RTAX_RTT = 4, /* not supported */
+ NL_RTAX_RTTVAR = 5, /* not supported */
+ NL_RTAX_SSTHRESH = 6, /* not supported */
+ NL_RTAX_CWND = 7, /* not supported */
+ NL_RTAX_ADVMSS = 8, /* not supported */
+ NL_RTAX_REORDERING = 9, /* not supported */
+ NL_RTAX_HOPLIMIT = 10, /* not supported */
+ NL_RTAX_INITCWND = 11, /* not supporrted */
+ NL_RTAX_FEATURES = 12, /* not supported */
+ NL_RTAX_RTO_MIN = 13, /* not supported */
+ NL_RTAX_INITRWND = 14, /* not supported */
+ NL_RTAX_QUICKACK = 15, /* not supported */
+ NL_RTAX_CC_ALGO = 16, /* not supported */
+ NL_RTAX_FASTOPEN_NO_COOKIE = 17, /* not supported */
+ __NL_RTAX_MAX
+};
+#define NL_RTAX_MAX (__NL_RTAX_MAX - 1)
+
+#define RTAX_FEATURE_ECN (1 << 0)
+#define RTAX_FEATURE_SACK (1 << 1)
+#define RTAX_FEATURE_TIMESTAMP (1 << 2)
+#define RTAX_FEATURE_ALLFRAG (1 << 3)
+
+#define RTAX_FEATURE_MASK \
+ (RTAX_FEATURE_ECN | RTAX_FEATURE_SACK | RTAX_FEATURE_TIMESTAMP | \
+ RTAX_FEATURE_ALLFRAG)
+
+#ifndef _KERNEL
+
+/*
+ * RTAX_* space clashes with rtsock namespace.
+ * Use NL_RTAX_ prefix in the kernel and map to
+ * RTAX_ for userland.
+ */
+#define RTAX_UNSPEC NL_RTAX_UNSPEC
+#define RTAX_LOCK NL_RTAX_LOCK
+#define RTAX_MTU NL_RTAX_MTU
+#define RTAX_WINDOW NL_RTAX_WINDOW
+#define RTAX_RTT NL_RTAX_RTT
+#define RTAX_RTTVAR NL_RTAX_RTTVAR
+#define RTAX_SSTHRESH NL_RTAX_SSTHRESH
+#define RTAX_CWND NL_RTAX_CWND
+#define RTAX_ADVMSS NL_RTAX_ADVMSS
+#define RTAX_REORDERING NL_RTAX_REORDERING
+#define RTAX_HOPLIMIT NL_RTAX_HOPLIMIT
+#define RTAX_INITCWND NL_RTAX_INITCWND
+#define RTAX_FEATURES NL_RTAX_FEATURES
+#define RTAX_RTO_MIN NL_RTAX_RTO_MIN
+#define RTAX_INITRWND NL_RTAX_INITRWND
+#define RTAX_QUICKACK NL_RTAX_QUICKACK
+#define RTAX_CC_ALGO NL_RTAX_CC_ALGO
+#define RTAX_FASTOPEN_NO_COOKIE NL_RTAX_FASTOPEN_NO_COOKIE
+#endif
+
+/*
+ * RTA_MULTIPATH consists of an array of rtnexthop structures.
+ * Each rtnexthop structure contains RTA_GATEWAY or RTA_VIA
+ * attribute following the header.
+ */
+struct rtnexthop {
+ unsigned short rtnh_len;
+ unsigned char rtnh_flags;
+ unsigned char rtnh_hops; /* nexthop weight */
+ int rtnh_ifindex;
+};
+
+/* rtnh_flags */
+#define RTNH_F_DEAD 0x01 /* not supported */
+#define RTNH_F_PERVASIVE 0x02 /* not supported */
+#define RTNH_F_ONLINK 0x04 /* not supported */
+#define RTNH_F_OFFLOAD 0x08 /* not supported */
+#define RTNH_F_LINKDOWN 0x10 /* not supported */
+#define RTNH_F_UNRESOLVED 0x20 /* not supported */
+#define RTNH_F_TRAP 0x40 /* not supported */
+
+#define RTNH_COMPARE_MASK (RTNH_F_DEAD | RTNH_F_LINKDOWN | \
+ RTNH_F_OFFLOAD | RTNH_F_TRAP)
+
+/* Macros to handle hexthops */
+#define RTNH_ALIGNTO NL_ITEM_ALIGN_SIZE
+#define RTNH_ALIGN(_len) NL_ITEM_ALIGN(_len)
+#define RTNH_HDRLEN ((int)sizeof(struct rtnexthop))
+#define _RTNH_LEN(_nh) ((int)(_nh)->rtnh_len)
+#define _RTNH_ALIGNED_LEN(_nh) RTNH_ALIGN(_RTNH_LEN(_nh))
+#define RTNH_OK(_nh, _len) NL_ITEM_OK(_nh, _len, RTNH_HDRLEN, _RTNH_LEN)
+#define RTNH_NEXT(_nh) ((struct rtnexthop *)((char *)(_nh) + _RTNH_ALIGNED_LEN(_nh)))
+#define RTNH_LENGTH(_len) (RTNH_HDRLEN + (_len))
+#define RTNH_SPACE(_len) RTNH_ALIGN(RTNH_LENGTH(_len))
+#define RTNH_DATA(_nh) ((struct rtattr *)NL_ITEM_DATA(_nh, RTNH_HDRLEN))
+
+struct rtgenmsg {
+ unsigned char rtgen_family;
+};
+
+#endif
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