/* Copyright (C) 1997-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* Based on the 4.4BSD and Linux version of this file. */
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#ifndef _NET_ROUTE_H
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#define _NET_ROUTE_H 1
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#include <features.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <bits/wordsize.h>
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/* This structure gets passed by the SIOCADDRT and SIOCDELRT calls. */
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struct rtentry
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{
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unsigned long int rt_pad1;
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struct sockaddr rt_dst; /* Target address. */
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struct sockaddr rt_gateway; /* Gateway addr (RTF_GATEWAY). */
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struct sockaddr rt_genmask; /* Target network mask (IP). */
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unsigned short int rt_flags;
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short int rt_pad2;
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unsigned long int rt_pad3;
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unsigned char rt_tos;
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unsigned char rt_class;
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#if __WORDSIZE == 64
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short int rt_pad4[3];
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#else
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short int rt_pad4;
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#endif
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short int rt_metric; /* +1 for binary compatibility! */
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char *rt_dev; /* Forcing the device at add. */
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unsigned long int rt_mtu; /* Per route MTU/Window. */
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unsigned long int rt_window; /* Window clamping. */
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unsigned short int rt_irtt; /* Initial RTT. */
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};
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/* Compatibility hack. */
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#define rt_mss rt_mtu
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struct in6_rtmsg
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{
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struct in6_addr rtmsg_dst;
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struct in6_addr rtmsg_src;
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struct in6_addr rtmsg_gateway;
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uint32_t rtmsg_type;
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uint16_t rtmsg_dst_len;
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uint16_t rtmsg_src_len;
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uint32_t rtmsg_metric;
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unsigned long int rtmsg_info;
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uint32_t rtmsg_flags;
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int rtmsg_ifindex;
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};
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#define RTF_UP 0x0001 /* Route usable. */
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#define RTF_GATEWAY 0x0002 /* Destination is a gateway. */
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#define RTF_HOST 0x0004 /* Host entry (net otherwise). */
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#define RTF_REINSTATE 0x0008 /* Reinstate route after timeout. */
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#define RTF_DYNAMIC 0x0010 /* Created dyn. (by redirect). */
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#define RTF_MODIFIED 0x0020 /* Modified dyn. (by redirect). */
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#define RTF_MTU 0x0040 /* Specific MTU for this route. */
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#define RTF_MSS RTF_MTU /* Compatibility. */
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#define RTF_WINDOW 0x0080 /* Per route window clamping. */
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#define RTF_IRTT 0x0100 /* Initial round trip time. */
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#define RTF_REJECT 0x0200 /* Reject route. */
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#define RTF_STATIC 0x0400 /* Manually injected route. */
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#define RTF_XRESOLVE 0x0800 /* External resolver. */
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#define RTF_NOFORWARD 0x1000 /* Forwarding inhibited. */
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#define RTF_THROW 0x2000 /* Go to next class. */
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#define RTF_NOPMTUDISC 0x4000 /* Do not send packets with DF. */
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/* for IPv6 */
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#define RTF_DEFAULT 0x00010000 /* default - learned via ND */
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#define RTF_ALLONLINK 0x00020000 /* fallback, no routers on link */
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#define RTF_ADDRCONF 0x00040000 /* addrconf route - RA */
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#define RTF_LINKRT 0x00100000 /* link specific - device match */
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#define RTF_NONEXTHOP 0x00200000 /* route with no nexthop */
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#define RTF_CACHE 0x01000000 /* cache entry */
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#define RTF_FLOW 0x02000000 /* flow significant route */
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#define RTF_POLICY 0x04000000 /* policy route */
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#define RTCF_VALVE 0x00200000
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#define RTCF_MASQ 0x00400000
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#define RTCF_NAT 0x00800000
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#define RTCF_DOREDIRECT 0x01000000
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#define RTCF_LOG 0x02000000
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#define RTCF_DIRECTSRC 0x04000000
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#define RTF_LOCAL 0x80000000
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#define RTF_INTERFACE 0x40000000
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#define RTF_MULTICAST 0x20000000
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#define RTF_BROADCAST 0x10000000
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#define RTF_NAT 0x08000000
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#define RTF_ADDRCLASSMASK 0xF8000000
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#define RT_ADDRCLASS(flags) ((uint32_t) flags >> 23)
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#define RT_TOS(tos) ((tos) & IPTOS_TOS_MASK)
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#define RT_LOCALADDR(flags) ((flags & RTF_ADDRCLASSMASK) \
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== (RTF_LOCAL|RTF_INTERFACE))
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#define RT_CLASS_UNSPEC 0
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#define RT_CLASS_DEFAULT 253
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#define RT_CLASS_MAIN 254
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#define RT_CLASS_LOCAL 255
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#define RT_CLASS_MAX 255
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#define RTMSG_ACK NLMSG_ACK
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#define RTMSG_OVERRUN NLMSG_OVERRUN
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#define RTMSG_NEWDEVICE 0x11
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#define RTMSG_DELDEVICE 0x12
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#define RTMSG_NEWROUTE 0x21
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#define RTMSG_DELROUTE 0x22
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#define RTMSG_NEWRULE 0x31
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#define RTMSG_DELRULE 0x32
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#define RTMSG_CONTROL 0x40
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#define RTMSG_AR_FAILED 0x51 /* Address Resolution failed. */
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#endif /* net/route.h */
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