#ifndef _NET_ROUTE_H
#define _NET_ROUTE_H 1

/* 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;
#if __WORDSIZE == 64
    short int rt_pad4[3];
#else
    short int rt_pad4;
#endif
    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

#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) ((uint32_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
