/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

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#ifndef _LINUX_DN_H

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#define _LINUX_DN_H

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#include <linux/ioctl.h>

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#include <linux/types.h>

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#include <linux/if_ether.h>

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/*

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DECnet Data Structures and Constants

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*/

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/*

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* DNPROTO_NSP can't be the same as SOL_SOCKET,

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* so increment each by one (compared to ULTRIX)

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*/

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#define DNPROTO_NSP 2 /* NSP protocol number */

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#define DNPROTO_ROU 3 /* Routing protocol number */

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#define DNPROTO_NML 4 /* Net mgt protocol number */

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#define DNPROTO_EVL 5 /* Evl protocol number (usr) */

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#define DNPROTO_EVR 6 /* Evl protocol number (evl) */

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#define DNPROTO_NSPT 7 /* NSP trace protocol number */

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#define DN_ADDL 2

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#define DN_MAXADDL 2 /* ULTRIX headers have 20 here, but pathworks has 2 */

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#define DN_MAXOPTL 16

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#define DN_MAXOBJL 16

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#define DN_MAXACCL 40

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#define DN_MAXALIASL 128

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#define DN_MAXNODEL 256

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#define DNBUFSIZE 65023

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/*

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* SET/GET Socket options - must match the DSO_ numbers below

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*/

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#define SO_CONDATA 1

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#define SO_CONACCESS 2

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#define SO_PROXYUSR 3

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#define SO_LINKINFO 7

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#define DSO_CONDATA 1 /* Set/Get connect data */

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#define DSO_DISDATA 10 /* Set/Get disconnect data */

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#define DSO_CONACCESS 2 /* Set/Get connect access data */

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#define DSO_ACCEPTMODE 4 /* Set/Get accept mode */

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#define DSO_CONACCEPT 5 /* Accept deferred connection */

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#define DSO_CONREJECT 6 /* Reject deferred connection */

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#define DSO_LINKINFO 7 /* Set/Get link information */

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#define DSO_STREAM 8 /* Set socket type to stream */

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#define DSO_SEQPACKET 9 /* Set socket type to sequenced packet */

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#define DSO_MAXWINDOW 11 /* Maximum window size allowed */

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#define DSO_NODELAY 12 /* Turn off nagle */

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#define DSO_CORK 13 /* Wait for more data! */

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#define DSO_SERVICES 14 /* NSP Services field */

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#define DSO_INFO 15 /* NSP Info field */

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#define DSO_MAX 15 /* Maximum option number */

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/* LINK States */

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#define LL_INACTIVE 0

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#define LL_CONNECTING 1

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#define LL_RUNNING 2

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#define LL_DISCONNECTING 3

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#define ACC_IMMED 0

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#define ACC_DEFER 1

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#define SDF_WILD 1 /* Wild card object */

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#define SDF_PROXY 2 /* Addr eligible for proxy */

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#define SDF_UICPROXY 4 /* Use uic-based proxy */

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/* Structures */

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struct dn_naddr {

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__le16 a_len;

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__u8 a_addr[DN_MAXADDL]; /* Two bytes little endian */

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};

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struct sockaddr_dn {

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__u16 sdn_family;

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__u8 sdn_flags;

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__u8 sdn_objnum;

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__le16 sdn_objnamel;

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__u8 sdn_objname[DN_MAXOBJL];

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struct dn_naddr sdn_add;

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};

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#define sdn_nodeaddrl sdn_add.a_len /* Node address length */

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#define sdn_nodeaddr sdn_add.a_addr /* Node address */

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/*

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* DECnet set/get DSO_CONDATA, DSO_DISDATA (optional data) structure

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*/

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struct optdata_dn {

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__le16 opt_status; /* Extended status return */

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#define opt_sts opt_status

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__le16 opt_optl; /* Length of user data */

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__u8 opt_data[16]; /* User data */

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};

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struct accessdata_dn {

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__u8 acc_accl;

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__u8 acc_acc[DN_MAXACCL];

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__u8 acc_passl;

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__u8 acc_pass[DN_MAXACCL];

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__u8 acc_userl;

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__u8 acc_user[DN_MAXACCL];

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};

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/*

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* DECnet logical link information structure

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*/

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struct linkinfo_dn {

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__u16 idn_segsize; /* Segment size for link */

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__u8 idn_linkstate; /* Logical link state */

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};

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/*

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* Ethernet address format (for DECnet)

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*/

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union etheraddress {

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__u8 dne_addr[ETH_ALEN]; /* Full ethernet address */

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struct {

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__u8 dne_hiord[4]; /* DECnet HIORD prefix */

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__u8 dne_nodeaddr[2]; /* DECnet node address */

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} dne_remote;

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};

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/*

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* DECnet physical socket address format

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*/

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struct dn_addr {

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__le16 dna_family; /* AF_DECnet */

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union etheraddress dna_netaddr; /* DECnet ethernet address */

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};

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#define DECNET_IOCTL_BASE 0x89 /* PROTOPRIVATE range */

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#define SIOCSNETADDR _IOW(DECNET_IOCTL_BASE, 0xe0, struct dn_naddr)

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#define SIOCGNETADDR _IOR(DECNET_IOCTL_BASE, 0xe1, struct dn_naddr)

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#define OSIOCSNETADDR _IOW(DECNET_IOCTL_BASE, 0xe0, int)

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#define OSIOCGNETADDR _IOR(DECNET_IOCTL_BASE, 0xe1, int)

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#endif /* _LINUX_DN_H */

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