text: /* Copyright (C) 1997 Free Software Foundation, Inc..
     This file is part of the GNU C Library.
  
     The GNU C Library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     License as published by the Free Software Foundation; either
     version 2.1 of the License, or (at your option) any later version.
  
     The GNU C Library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
     License along with the GNU C Library; if not, see
     <http://www.gnu.org/licenses/>.  */
  
  /* Based on the 4.4BSD and Linux version of this file.  */
  
  #ifndef _NET_ROUTE_H
  
  #define _NET_ROUTE_H	1
  #include <features.h>
  
  #include <sys/socket.h>
  #include <sys/types.h>
  #include <netinet/in.h>
  
  
  /* This structure gets passed by the SIOCADDRT and SIOCDELRT calls. */
  struct rtentry
    {
      unsigned long int rt_pad1;
      struct sockaddr rt_dst;		/* Target address.  */
      struct sockaddr rt_gateway;		/* Gateway addr (RTF_GATEWAY).  */
      struct sockaddr rt_genmask;		/* Target network mask (IP).  */
      unsigned short int rt_flags;
      short int rt_pad2;
      unsigned long int rt_pad3;
      unsigned char rt_tos;
      unsigned char rt_class;
      short int rt_pad4;
      short int rt_metric;		/* +1 for binary compatibility!  */
      char *rt_dev;			/* Forcing the device at add.  */
      unsigned long int rt_mtu;		/* Per route MTU/Window.  */
      unsigned long int rt_window;	/* Window clamping.  */
      unsigned short int rt_irtt;		/* Initial RTT.  */
    };
  /* Compatibility hack.  */
  #define rt_mss	rt_mtu
  
  
  struct in6_rtmsg
    {
      struct in6_addr rtmsg_dst;
      struct in6_addr rtmsg_src;
      struct in6_addr rtmsg_gateway;
      u_int32_t rtmsg_type;
      u_int16_t rtmsg_dst_len;
      u_int16_t rtmsg_src_len;
      u_int32_t rtmsg_metric;
      unsigned long int rtmsg_info;
      u_int32_t rtmsg_flags;
      int rtmsg_ifindex;
    };
  
  
  #define	RTF_UP		0x0001		/* Route usable.  */
  #define	RTF_GATEWAY	0x0002		/* Destination is a gateway.  */
  
  #define	RTF_HOST	0x0004		/* Host entry (net otherwise).  */
  #define RTF_REINSTATE	0x0008		/* Reinstate route after timeout.  */
  #define	RTF_DYNAMIC	0x0010		/* Created dyn. (by redirect).  */
  #define	RTF_MODIFIED	0x0020		/* Modified dyn. (by redirect).  */
  #define RTF_MTU		0x0040		/* Specific MTU for this route.  */
  #define RTF_MSS		RTF_MTU		/* Compatibility.  */
  #define RTF_WINDOW	0x0080		/* Per route window clamping.  */
  #define RTF_IRTT	0x0100		/* Initial round trip time.  */
  #define RTF_REJECT	0x0200		/* Reject route.  */
  #define	RTF_STATIC	0x0400		/* Manually injected route.  */
  #define	RTF_XRESOLVE	0x0800		/* External resolver.  */
  #define RTF_NOFORWARD   0x1000		/* Forwarding inhibited.  */
  #define RTF_THROW	0x2000		/* Go to next class.  */
  #define RTF_NOPMTUDISC  0x4000		/* Do not send packets with DF.  */
  
  /* for IPv6 */
  #define RTF_DEFAULT	0x00010000	/* default - learned via ND	*/
  #define RTF_ALLONLINK	0x00020000	/* fallback, no routers on link	*/
  #define RTF_ADDRCONF	0x00040000	/* addrconf route - RA		*/
  
  #define RTF_LINKRT	0x00100000	/* link specific - device match	*/
  #define RTF_NONEXTHOP	0x00200000	/* route with no nexthop	*/
  
  #define RTF_CACHE	0x01000000	/* cache entry			*/
  #define RTF_FLOW	0x02000000	/* flow significant route	*/
  #define RTF_POLICY	0x04000000	/* policy route			*/
  
  #define RTCF_VALVE	0x00200000
  #define RTCF_MASQ	0x00400000
  #define RTCF_NAT	0x00800000
  #define RTCF_DOREDIRECT 0x01000000
  #define RTCF_LOG	0x02000000
  #define RTCF_DIRECTSRC	0x04000000
  
  #define RTF_LOCAL	0x80000000
  #define RTF_INTERFACE	0x40000000
  #define RTF_MULTICAST	0x20000000
  #define RTF_BROADCAST	0x10000000
  #define RTF_NAT		0x08000000
  
  #define RTF_ADDRCLASSMASK	0xF8000000
  #define RT_ADDRCLASS(flags)	((__u_int32_t) flags >> 23)
  
  #define RT_TOS(tos)		((tos) & IPTOS_TOS_MASK)
  
  #define RT_LOCALADDR(flags)	((flags & RTF_ADDRCLASSMASK) \
  				 == (RTF_LOCAL|RTF_INTERFACE))
  
  #define RT_CLASS_UNSPEC		0
  #define RT_CLASS_DEFAULT	253
  
  #define RT_CLASS_MAIN		254
  #define RT_CLASS_LOCAL		255
  #define RT_CLASS_MAX		255
  
  
  #define RTMSG_ACK		NLMSG_ACK
  #define RTMSG_OVERRUN		NLMSG_OVERRUN
  
  #define RTMSG_NEWDEVICE		0x11
  #define RTMSG_DELDEVICE		0x12
  #define RTMSG_NEWROUTE		0x21
  #define RTMSG_DELROUTE		0x22
  #define RTMSG_NEWRULE		0x31
  #define RTMSG_DELRULE		0x32
  #define RTMSG_CONTROL		0x40
  
  #define RTMSG_AR_FAILED		0x51	/* Address Resolution failed.  */
  
  #endif /* net/route.h */
  