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

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/**

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* file phonet.h

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* Phonet sockets kernel interface

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* This program is free software; you can redistribute it and/or

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* modify it under the terms of the GNU General Public License

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* version 2 as published by the Free Software Foundation.

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* This program is distributed in the hope that it will be useful, but

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* WITHOUT ANY WARRANTY; without even the implied warranty of

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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

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* General Public License for more details.

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* You should have received a copy of the GNU General Public License

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* along with this program; if not, write to the Free Software

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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA

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* 02110-1301 USA

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#ifndef LINUX_PHONET_H

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#define LINUX_PHONET_H

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#include <linux/types.h>

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#include <linux/socket.h>

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/* Automatic protocol selection */

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#define PN_PROTO_TRANSPORT 0

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/* Phonet datagram socket */

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#define PN_PROTO_PHONET 1

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/* Phonet pipe */

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#define PN_PROTO_PIPE 2

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#define PHONET_NPROTO 3

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/* Socket options for SOL_PNPIPE level */

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#define PNPIPE_ENCAP 1

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#define PNPIPE_IFINDEX 2

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#define PNPIPE_HANDLE 3

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#define PNPIPE_INITSTATE 4

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#define PNADDR_ANY 0

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#define PNADDR_BROADCAST 0xFC

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#define PNPORT_RESOURCE_ROUTING 0

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/* Values for PNPIPE_ENCAP option */

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#define PNPIPE_ENCAP_NONE 0

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#define PNPIPE_ENCAP_IP 1

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/* ioctls */

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#define SIOCPNGETOBJECT (SIOCPROTOPRIVATE + 0)

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#define SIOCPNENABLEPIPE (SIOCPROTOPRIVATE + 13)

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#define SIOCPNADDRESOURCE (SIOCPROTOPRIVATE + 14)

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#define SIOCPNDELRESOURCE (SIOCPROTOPRIVATE + 15)

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/* Phonet protocol header */

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struct phonethdr {

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__u8 pn_rdev;

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__u8 pn_sdev;

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__u8 pn_res;

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__be16 pn_length;

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__u8 pn_robj;

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__u8 pn_sobj;

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} __attribute__((packed));

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/* Common Phonet payload header */

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struct phonetmsg {

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__u8 pn_trans_id; /* transaction ID */

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__u8 pn_msg_id; /* message type */

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union {

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struct {

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__u8 pn_submsg_id; /* message subtype */

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__u8 pn_data[5];

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} base;

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struct {

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__u16 pn_e_res_id; /* extended resource ID */

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__u8 pn_e_submsg_id; /* message subtype */

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__u8 pn_e_data[3];

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} ext;

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} pn_msg_u;

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};

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#define PN_COMMON_MESSAGE 0xF0

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#define PN_COMMGR 0x10

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#define PN_PREFIX 0xE0 /* resource for extended messages */

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#define pn_submsg_id pn_msg_u.base.pn_submsg_id

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#define pn_e_submsg_id pn_msg_u.ext.pn_e_submsg_id

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#define pn_e_res_id pn_msg_u.ext.pn_e_res_id

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#define pn_data pn_msg_u.base.pn_data

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#define pn_e_data pn_msg_u.ext.pn_e_data

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/* data for unreachable errors */

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#define PN_COMM_SERVICE_NOT_IDENTIFIED_RESP 0x01

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#define PN_COMM_ISA_ENTITY_NOT_REACHABLE_RESP 0x14

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#define pn_orig_msg_id pn_data[0]

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#define pn_status pn_data[1]

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#define pn_e_orig_msg_id pn_e_data[0]

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#define pn_e_status pn_e_data[1]

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/* Phonet socket address structure */

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struct sockaddr_pn {

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__kernel_sa_family_t spn_family;

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__u8 spn_obj;

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__u8 spn_dev;

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__u8 spn_resource;

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__u8 spn_zero[sizeof(struct sockaddr) - sizeof(__kernel_sa_family_t) - 3];

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} __attribute__((packed));

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/* Well known address */

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#define PN_DEV_PC 0x10

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static __inline__ __u16 pn_object(__u8 addr, __u16 port)

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{

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return (addr << 8) | (port & 0x3ff);

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}

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static __inline__ __u8 pn_obj(__u16 handle)

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{

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return handle & 0xff;

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}

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static __inline__ __u8 pn_dev(__u16 handle)

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{

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return handle >> 8;

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}

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static __inline__ __u16 pn_port(__u16 handle)

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{

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return handle & 0x3ff;

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}

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static __inline__ __u8 pn_addr(__u16 handle)

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{

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return (handle >> 8) & 0xfc;

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}

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static __inline__ void pn_sockaddr_set_addr(struct sockaddr_pn *spn, __u8 addr)

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{

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spn->spn_dev &= 0x03;

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spn->spn_dev |= addr & 0xfc;

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}

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static __inline__ void pn_sockaddr_set_port(struct sockaddr_pn *spn, __u16 port)

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{

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spn->spn_dev &= 0xfc;

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spn->spn_dev |= (port >> 8) & 0x03;

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spn->spn_obj = port & 0xff;

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}

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static __inline__ void pn_sockaddr_set_object(struct sockaddr_pn *spn,

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__u16 handle)

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{

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spn->spn_dev = pn_dev(handle);

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spn->spn_obj = pn_obj(handle);

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}

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static __inline__ void pn_sockaddr_set_resource(struct sockaddr_pn *spn,

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__u8 resource)

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{

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spn->spn_resource = resource;

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}

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static __inline__ __u8 pn_sockaddr_get_addr(const struct sockaddr_pn *spn)

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{

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return spn->spn_dev & 0xfc;

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}

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static __inline__ __u16 pn_sockaddr_get_port(const struct sockaddr_pn *spn)

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{

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return ((spn->spn_dev & 0x03) << 8) | spn->spn_obj;

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}

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static __inline__ __u16 pn_sockaddr_get_object(const struct sockaddr_pn *spn)

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{

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return pn_object(spn->spn_dev, spn->spn_obj);

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}

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static __inline__ __u8 pn_sockaddr_get_resource(const struct sockaddr_pn *spn)

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{

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return spn->spn_resource;

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}

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/* Phonet device ioctl requests */

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#endif /* LINUX_PHONET_H */

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