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TOMOYO Linux Cross Reference
Linux/include/uapi/linux/if_arp.h

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  1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
  2 /*
  3  * INET         An implementation of the TCP/IP protocol suite for the LINUX
  4  *              operating system.  INET is implemented using the  BSD Socket
  5  *              interface as the means of communication with the user level.
  6  *
  7  *              Global definitions for the ARP (RFC 826) protocol.
  8  *
  9  * Version:     @(#)if_arp.h    1.0.1   04/16/93
 10  *
 11  * Authors:     Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988
 12  *              Portions taken from the KA9Q/NOS (v2.00m PA0GRI) source.
 13  *              Ross Biro
 14  *              Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
 15  *              Florian La Roche,
 16  *              Jonathan Layes <layes@loran.com>
 17  *              Arnaldo Carvalho de Melo <acme@conectiva.com.br> ARPHRD_HWX25
 18  *
 19  *              This program is free software; you can redistribute it and/or
 20  *              modify it under the terms of the GNU General Public License
 21  *              as published by the Free Software Foundation; either version
 22  *              2 of the License, or (at your option) any later version.
 23  */
 24 #ifndef _UAPI_LINUX_IF_ARP_H
 25 #define _UAPI_LINUX_IF_ARP_H
 26 
 27 #include <linux/netdevice.h>
 28 
 29 /* ARP protocol HARDWARE identifiers. */
 30 #define ARPHRD_NETROM   0               /* from KA9Q: NET/ROM pseudo    */
 31 #define ARPHRD_ETHER    1               /* Ethernet 10Mbps              */
 32 #define ARPHRD_EETHER   2               /* Experimental Ethernet        */
 33 #define ARPHRD_AX25     3               /* AX.25 Level 2                */
 34 #define ARPHRD_PRONET   4               /* PROnet token ring            */
 35 #define ARPHRD_CHAOS    5               /* Chaosnet                     */
 36 #define ARPHRD_IEEE802  6               /* IEEE 802.2 Ethernet/TR/TB    */
 37 #define ARPHRD_ARCNET   7               /* ARCnet                       */
 38 #define ARPHRD_APPLETLK 8               /* APPLEtalk                    */
 39 #define ARPHRD_DLCI     15              /* Frame Relay DLCI             */
 40 #define ARPHRD_ATM      19              /* ATM                          */
 41 #define ARPHRD_METRICOM 23              /* Metricom STRIP (new IANA id) */
 42 #define ARPHRD_IEEE1394 24              /* IEEE 1394 IPv4 - RFC 2734    */
 43 #define ARPHRD_EUI64    27              /* EUI-64                       */
 44 #define ARPHRD_INFINIBAND 32            /* InfiniBand                   */
 45 
 46 /* Dummy types for non ARP hardware */
 47 #define ARPHRD_SLIP     256
 48 #define ARPHRD_CSLIP    257
 49 #define ARPHRD_SLIP6    258
 50 #define ARPHRD_CSLIP6   259
 51 #define ARPHRD_RSRVD    260             /* Notional KISS type           */
 52 #define ARPHRD_ADAPT    264
 53 #define ARPHRD_ROSE     270
 54 #define ARPHRD_X25      271             /* CCITT X.25                   */
 55 #define ARPHRD_HWX25    272             /* Boards with X.25 in firmware */
 56 #define ARPHRD_CAN      280             /* Controller Area Network      */
 57 #define ARPHRD_PPP      512
 58 #define ARPHRD_CISCO    513             /* Cisco HDLC                   */
 59 #define ARPHRD_HDLC     ARPHRD_CISCO
 60 #define ARPHRD_LAPB     516             /* LAPB                         */
 61 #define ARPHRD_DDCMP    517             /* Digital's DDCMP protocol     */
 62 #define ARPHRD_RAWHDLC  518             /* Raw HDLC                     */
 63 #define ARPHRD_RAWIP    519             /* Raw IP                       */
 64 
 65 #define ARPHRD_TUNNEL   768             /* IPIP tunnel                  */
 66 #define ARPHRD_TUNNEL6  769             /* IP6IP6 tunnel                */
 67 #define ARPHRD_FRAD     770             /* Frame Relay Access Device    */
 68 #define ARPHRD_SKIP     771             /* SKIP vif                     */
 69 #define ARPHRD_LOOPBACK 772             /* Loopback device              */
 70 #define ARPHRD_LOCALTLK 773             /* Localtalk device             */
 71 #define ARPHRD_FDDI     774             /* Fiber Distributed Data Interface */
 72 #define ARPHRD_BIF      775             /* AP1000 BIF                   */
 73 #define ARPHRD_SIT      776             /* sit0 device - IPv6-in-IPv4   */
 74 #define ARPHRD_IPDDP    777             /* IP over DDP tunneller        */
 75 #define ARPHRD_IPGRE    778             /* GRE over IP                  */
 76 #define ARPHRD_PIMREG   779             /* PIMSM register interface     */
 77 #define ARPHRD_HIPPI    780             /* High Performance Parallel Interface */
 78 #define ARPHRD_ASH      781             /* Nexus 64Mbps Ash             */
 79 #define ARPHRD_ECONET   782             /* Acorn Econet                 */
 80 #define ARPHRD_IRDA     783             /* Linux-IrDA                   */
 81 /* ARP works differently on different FC media .. so  */
 82 #define ARPHRD_FCPP     784             /* Point to point fibrechannel  */
 83 #define ARPHRD_FCAL     785             /* Fibrechannel arbitrated loop */
 84 #define ARPHRD_FCPL     786             /* Fibrechannel public loop     */
 85 #define ARPHRD_FCFABRIC 787             /* Fibrechannel fabric          */
 86         /* 787->799 reserved for fibrechannel media types */
 87 #define ARPHRD_IEEE802_TR 800           /* Magic type ident for TR      */
 88 #define ARPHRD_IEEE80211 801            /* IEEE 802.11                  */
 89 #define ARPHRD_IEEE80211_PRISM 802      /* IEEE 802.11 + Prism2 header  */
 90 #define ARPHRD_IEEE80211_RADIOTAP 803   /* IEEE 802.11 + radiotap header */
 91 #define ARPHRD_IEEE802154         804
 92 #define ARPHRD_IEEE802154_MONITOR 805   /* IEEE 802.15.4 network monitor */
 93 
 94 #define ARPHRD_PHONET   820             /* PhoNet media type            */
 95 #define ARPHRD_PHONET_PIPE 821          /* PhoNet pipe header           */
 96 #define ARPHRD_CAIF     822             /* CAIF media type              */
 97 #define ARPHRD_IP6GRE   823             /* GRE over IPv6                */
 98 #define ARPHRD_NETLINK  824             /* Netlink header               */
 99 #define ARPHRD_6LOWPAN  825             /* IPv6 over LoWPAN             */
100 #define ARPHRD_VSOCKMON 826             /* Vsock monitor header         */
101 
102 #define ARPHRD_VOID       0xFFFF        /* Void type, nothing is known */
103 #define ARPHRD_NONE       0xFFFE        /* zero header length */
104 
105 /* ARP protocol opcodes. */
106 #define ARPOP_REQUEST   1               /* ARP request                  */
107 #define ARPOP_REPLY     2               /* ARP reply                    */
108 #define ARPOP_RREQUEST  3               /* RARP request                 */
109 #define ARPOP_RREPLY    4               /* RARP reply                   */
110 #define ARPOP_InREQUEST 8               /* InARP request                */
111 #define ARPOP_InREPLY   9               /* InARP reply                  */
112 #define ARPOP_NAK       10              /* (ATM)ARP NAK                 */
113 
114 
115 /* ARP ioctl request. */
116 struct arpreq {
117         struct sockaddr arp_pa;         /* protocol address              */
118         struct sockaddr arp_ha;         /* hardware address              */
119         int             arp_flags;      /* flags                         */
120         struct sockaddr arp_netmask;    /* netmask (only for proxy arps) */
121         char            arp_dev[IFNAMSIZ];
122 };
123 
124 struct arpreq_old {
125         struct sockaddr arp_pa;         /* protocol address              */
126         struct sockaddr arp_ha;         /* hardware address              */
127         int             arp_flags;      /* flags                         */
128         struct sockaddr arp_netmask;    /* netmask (only for proxy arps) */
129 };
130 
131 /* ARP Flag values. */
132 #define ATF_COM         0x02            /* completed entry (ha valid)   */
133 #define ATF_PERM        0x04            /* permanent entry              */
134 #define ATF_PUBL        0x08            /* publish entry                */
135 #define ATF_USETRAILERS 0x10            /* has requested trailers       */
136 #define ATF_NETMASK     0x20            /* want to use a netmask (only
137                                            for proxy entries) */
138 #define ATF_DONTPUB     0x40            /* don't answer this addresses  */
139 
140 /*
141  *      This structure defines an ethernet arp header.
142  */
143 
144 struct arphdr {
145         __be16          ar_hrd;         /* format of hardware address   */
146         __be16          ar_pro;         /* format of protocol address   */
147         unsigned char   ar_hln;         /* length of hardware address   */
148         unsigned char   ar_pln;         /* length of protocol address   */
149         __be16          ar_op;          /* ARP opcode (command)         */
150 
151 #if 0
152          /*
153           *      Ethernet looks like this : This bit is variable sized however...
154           */
155         unsigned char           ar_sha[ETH_ALEN];       /* sender hardware address      */
156         unsigned char           ar_sip[4];              /* sender IP address            */
157         unsigned char           ar_tha[ETH_ALEN];       /* target hardware address      */
158         unsigned char           ar_tip[4];              /* target IP address            */
159 #endif
160 
161 };
162 
163 
164 #endif /* _UAPI_LINUX_IF_ARP_H */
165 

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