1  /* Copyright (C) 1997-2023 Free Software Foundation, Inc..
       2     This file is part of the GNU C Library.
       3  
       4     The GNU C Library is free software; you can redistribute it and/or
       5     modify it under the terms of the GNU Lesser General Public
       6     License as published by the Free Software Foundation; either
       7     version 2.1 of the License, or (at your option) any later version.
       8  
       9     The GNU C Library is distributed in the hope that it will be useful,
      10     but WITHOUT ANY WARRANTY; without even the implied warranty of
      11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12     Lesser General Public License for more details.
      13  
      14     You should have received a copy of the GNU Lesser General Public
      15     License along with the GNU C Library; if not, see
      16     <https://www.gnu.org/licenses/>.  */
      17  
      18  /* Based on the 4.4BSD and Linux version of this file.  */
      19  
      20  #ifndef _NET_ROUTE_H
      21  
      22  #define _NET_ROUTE_H	1
      23  #include <features.h>
      24  
      25  #include <sys/socket.h>
      26  #include <sys/types.h>
      27  #include <netinet/in.h>
      28  #include <net/if.h>
      29  
      30  
      31  typedef struct ifrtreq
      32    {
      33      char ifname[IF_NAMESIZE];
      34      in_addr_t rt_dest;
      35      in_addr_t rt_mask;
      36      in_addr_t rt_gateway;
      37      int rt_flags;
      38      int rt_metric;
      39      int rt_mtu;
      40      int rt_window;
      41      int rt_irtt;
      42      int rt_tos;
      43      int rt_class;
      44    } ifrtreq_t;
      45  #define _IOT_ifrtreq _IOT (_IOTS(char), IF_NAMESIZE, _IOTS(int), 10, 0, 0)
      46  
      47  
      48  #define	RTF_UP		0x0001		/* Route usable.  */
      49  #define	RTF_GATEWAY	0x0002		/* Destination is a gateway.  */
      50  
      51  #define	RTF_HOST	0x0004		/* Host entry (net otherwise).  */
      52  #define RTF_REINSTATE	0x0008		/* Reinstate route after timeout.  */
      53  #define	RTF_DYNAMIC	0x0010		/* Created dyn. (by redirect).  */
      54  #define	RTF_MODIFIED	0x0020		/* Modified dyn. (by redirect).  */
      55  #define RTF_MTU		0x0040		/* Specific MTU for this route.  */
      56  #define RTF_MSS		RTF_MTU		/* Compatibility.  */
      57  #define RTF_WINDOW	0x0080		/* Per route window clamping.  */
      58  #define RTF_IRTT	0x0100		/* Initial round trip time.  */
      59  #define RTF_REJECT	0x0200		/* Reject route.  */
      60  #define	RTF_STATIC	0x0400		/* Manually injected route.  */
      61  #define	RTF_XRESOLVE	0x0800		/* External resolver.  */
      62  #define RTF_NOFORWARD   0x1000		/* Forwarding inhibited.  */
      63  #define RTF_THROW	0x2000		/* Go to next class.  */
      64  #define RTF_NOPMTUDISC  0x4000		/* Do not send packets with DF.  */
      65  
      66  /* for IPv6 */
      67  #define RTF_DEFAULT	0x00010000	/* default - learned via ND	*/
      68  #define RTF_ALLONLINK	0x00020000	/* fallback, no routers on link	*/
      69  #define RTF_ADDRCONF	0x00040000	/* addrconf route - RA		*/
      70  
      71  #define RTF_LINKRT	0x00100000	/* link specific - device match	*/
      72  #define RTF_NONEXTHOP	0x00200000	/* route with no nexthop	*/
      73  
      74  #define RTF_CACHE	0x01000000	/* cache entry			*/
      75  #define RTF_FLOW	0x02000000	/* flow significant route	*/
      76  #define RTF_POLICY	0x04000000	/* policy route			*/
      77  
      78  #define RTCF_VALVE	0x00200000
      79  #define RTCF_MASQ	0x00400000
      80  #define RTCF_NAT	0x00800000
      81  #define RTCF_DOREDIRECT 0x01000000
      82  #define RTCF_LOG	0x02000000
      83  #define RTCF_DIRECTSRC	0x04000000
      84  
      85  #define RTF_LOCAL	0x80000000
      86  #define RTF_INTERFACE	0x40000000
      87  #define RTF_MULTICAST	0x20000000
      88  #define RTF_BROADCAST	0x10000000
      89  #define RTF_NAT		0x08000000
      90  
      91  #define RTF_ADDRCLASSMASK	0xF8000000
      92  #define RT_ADDRCLASS(flags)	((uint32_t) flags >> 23)
      93  
      94  #define RT_TOS(tos)		((tos) & IPTOS_TOS_MASK)
      95  
      96  #define RT_LOCALADDR(flags)	((flags & RTF_ADDRCLASSMASK) \
      97  				 == (RTF_LOCAL|RTF_INTERFACE))
      98  
      99  #define RT_CLASS_UNSPEC		0
     100  #define RT_CLASS_DEFAULT	253
     101  
     102  #define RT_CLASS_MAIN		254
     103  #define RT_CLASS_LOCAL		255
     104  #define RT_CLASS_MAX		255
     105  
     106  
     107  #define RTMSG_ACK		NLMSG_ACK
     108  #define RTMSG_OVERRUN		NLMSG_OVERRUN
     109  
     110  #define RTMSG_NEWDEVICE		0x11
     111  #define RTMSG_DELDEVICE		0x12
     112  #define RTMSG_NEWROUTE		0x21
     113  #define RTMSG_DELROUTE		0x22
     114  #define RTMSG_NEWRULE		0x31
     115  #define RTMSG_DELRULE		0x32
     116  #define RTMSG_CONTROL		0x40
     117  
     118  #define RTMSG_AR_FAILED		0x51	/* Address Resolution failed.  */
     119  
     120  #endif /* net/route.h */