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| 1 | /* Copyright (C) 1997-2022 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 | #define _NET_ROUTE_H 1 |
| 22 | |
| 23 | #include <features.h> |
| 24 | #include <sys/socket.h> |
| 25 | #include <sys/types.h> |
| 26 | #include <netinet/in.h> |
| 27 | #include <bits/wordsize.h> |
| 28 | |
| 29 | |
| 30 | /* This structure gets passed by the SIOCADDRT and SIOCDELRT calls. */ |
| 31 | struct rtentry |
| 32 | { |
| 33 | unsigned long int rt_pad1; |
| 34 | struct sockaddr rt_dst; /* Target address. */ |
| 35 | struct sockaddr rt_gateway; /* Gateway addr (RTF_GATEWAY). */ |
| 36 | struct sockaddr rt_genmask; /* Target network mask (IP). */ |
| 37 | unsigned short int rt_flags; |
| 38 | short int rt_pad2; |
| 39 | unsigned long int rt_pad3; |
| 40 | unsigned char rt_tos; |
| 41 | unsigned char rt_class; |
| 42 | #if __WORDSIZE == 64 |
| 43 | short int rt_pad4[3]; |
| 44 | #else |
| 45 | short int rt_pad4; |
| 46 | #endif |
| 47 | short int rt_metric; /* +1 for binary compatibility! */ |
| 48 | char *rt_dev; /* Forcing the device at add. */ |
| 49 | unsigned long int rt_mtu; /* Per route MTU/Window. */ |
| 50 | unsigned long int rt_window; /* Window clamping. */ |
| 51 | unsigned short int rt_irtt; /* Initial RTT. */ |
| 52 | }; |
| 53 | /* Compatibility hack. */ |
| 54 | #define rt_mss rt_mtu |
| 55 | |
| 56 | |
| 57 | struct in6_rtmsg |
| 58 | { |
| 59 | struct in6_addr rtmsg_dst; |
| 60 | struct in6_addr rtmsg_src; |
| 61 | struct in6_addr rtmsg_gateway; |
| 62 | uint32_t rtmsg_type; |
| 63 | uint16_t rtmsg_dst_len; |
| 64 | uint16_t rtmsg_src_len; |
| 65 | uint32_t rtmsg_metric; |
| 66 | unsigned long int rtmsg_info; |
| 67 | uint32_t rtmsg_flags; |
| 68 | int rtmsg_ifindex; |
| 69 | }; |
| 70 | |
| 71 | |
| 72 | #define RTF_UP 0x0001 /* Route usable. */ |
| 73 | #define RTF_GATEWAY 0x0002 /* Destination is a gateway. */ |
| 74 | |
| 75 | #define RTF_HOST 0x0004 /* Host entry (net otherwise). */ |
| 76 | #define RTF_REINSTATE 0x0008 /* Reinstate route after timeout. */ |
| 77 | #define RTF_DYNAMIC 0x0010 /* Created dyn. (by redirect). */ |
| 78 | #define RTF_MODIFIED 0x0020 /* Modified dyn. (by redirect). */ |
| 79 | #define RTF_MTU 0x0040 /* Specific MTU for this route. */ |
| 80 | #define RTF_MSS RTF_MTU /* Compatibility. */ |
| 81 | #define RTF_WINDOW 0x0080 /* Per route window clamping. */ |
| 82 | #define RTF_IRTT 0x0100 /* Initial round trip time. */ |
| 83 | #define RTF_REJECT 0x0200 /* Reject route. */ |
| 84 | #define RTF_STATIC 0x0400 /* Manually injected route. */ |
| 85 | #define RTF_XRESOLVE 0x0800 /* External resolver. */ |
| 86 | #define RTF_NOFORWARD 0x1000 /* Forwarding inhibited. */ |
| 87 | #define RTF_THROW 0x2000 /* Go to next class. */ |
| 88 | #define RTF_NOPMTUDISC 0x4000 /* Do not send packets with DF. */ |
| 89 | |
| 90 | /* for IPv6 */ |
| 91 | #define RTF_DEFAULT 0x00010000 /* default - learned via ND */ |
| 92 | #define RTF_ALLONLINK 0x00020000 /* fallback, no routers on link */ |
| 93 | #define RTF_ADDRCONF 0x00040000 /* addrconf route - RA */ |
| 94 | |
| 95 | #define RTF_LINKRT 0x00100000 /* link specific - device match */ |
| 96 | #define RTF_NONEXTHOP 0x00200000 /* route with no nexthop */ |
| 97 | |
| 98 | #define RTF_CACHE 0x01000000 /* cache entry */ |
| 99 | #define RTF_FLOW 0x02000000 /* flow significant route */ |
| 100 | #define RTF_POLICY 0x04000000 /* policy route */ |
| 101 | |
| 102 | #define RTCF_VALVE 0x00200000 |
| 103 | #define RTCF_MASQ 0x00400000 |
| 104 | #define RTCF_NAT 0x00800000 |
| 105 | #define RTCF_DOREDIRECT 0x01000000 |
| 106 | #define RTCF_LOG 0x02000000 |
| 107 | #define RTCF_DIRECTSRC 0x04000000 |
| 108 | |
| 109 | #define RTF_LOCAL 0x80000000 |
| 110 | #define RTF_INTERFACE 0x40000000 |
| 111 | #define RTF_MULTICAST 0x20000000 |
| 112 | #define RTF_BROADCAST 0x10000000 |
| 113 | #define RTF_NAT 0x08000000 |
| 114 | |
| 115 | #define RTF_ADDRCLASSMASK 0xF8000000 |
| 116 | #define RT_ADDRCLASS(flags) ((uint32_t) flags >> 23) |
| 117 | |
| 118 | #define RT_TOS(tos) ((tos) & IPTOS_TOS_MASK) |
| 119 | |
| 120 | #define RT_LOCALADDR(flags) ((flags & RTF_ADDRCLASSMASK) \ |
| 121 | == (RTF_LOCAL|RTF_INTERFACE)) |
| 122 | |
| 123 | #define RT_CLASS_UNSPEC 0 |
| 124 | #define RT_CLASS_DEFAULT 253 |
| 125 | |
| 126 | #define RT_CLASS_MAIN 254 |
| 127 | #define RT_CLASS_LOCAL 255 |
| 128 | #define RT_CLASS_MAX 255 |
| 129 | |
| 130 | |
| 131 | #define RTMSG_ACK NLMSG_ACK |
| 132 | #define RTMSG_OVERRUN NLMSG_OVERRUN |
| 133 | |
| 134 | #define RTMSG_NEWDEVICE 0x11 |
| 135 | #define RTMSG_DELDEVICE 0x12 |
| 136 | #define RTMSG_NEWROUTE 0x21 |
| 137 | #define RTMSG_DELROUTE 0x22 |
| 138 | #define RTMSG_NEWRULE 0x31 |
| 139 | #define RTMSG_DELRULE 0x32 |
| 140 | #define RTMSG_CONTROL 0x40 |
| 141 | |
| 142 | #define RTMSG_AR_FAILED 0x51 /* Address Resolution failed. */ |
| 143 | |
| 144 | #endif /* net/route.h */ |
| 145 |
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