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/**
* file phonet.h
*
* Phonet sockets kernel interface
*
* Copyright (C) 2008 Nokia Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifndef LINUX_PHONET_H
#define LINUX_PHONET_H
/* Automatic protocol selection */
#define PN_PROTO_TRANSPORT 0
/* Phonet datagram socket */
#define PN_PROTO_PHONET 1
#define PHONET_NPROTO 2
#define PNADDR_ANY 0
#define PNPORT_RESOURCE_ROUTING 0
/* Phonet protocol header */
struct phonethdr {
__u8 pn_rdev;
__u8 pn_sdev;
__u8 pn_res;
__be16 pn_length;
__u8 pn_robj;
__u8 pn_sobj;
} __attribute__((packed));
/* Phonet socket address structure */
struct sockaddr_pn {
sa_family_t spn_family;
__u8 spn_obj;
__u8 spn_dev;
__u8 spn_resource;
__u8 spn_zero[sizeof(struct sockaddr) - sizeof(sa_family_t) - 3];
} __attribute__ ((packed));
static inline __u16 pn_object(__u8 addr, __u16 port)
{
return (addr << 8) | (port & 0x3ff);
}
static inline __u8 pn_obj(__u16 handle)
{
return handle & 0xff;
}
static inline __u8 pn_dev(__u16 handle)
{
return handle >> 8;
}
static inline __u16 pn_port(__u16 handle)
{
return handle & 0x3ff;
}
static inline __u8 pn_addr(__u16 handle)
{
return (handle >> 8) & 0xfc;
}
static inline void pn_sockaddr_set_addr(struct sockaddr_pn *spn, __u8 addr)
{
spn->spn_dev &= 0x03;
spn->spn_dev |= addr & 0xfc;
}
static inline void pn_sockaddr_set_port(struct sockaddr_pn *spn, __u16 port)
{
spn->spn_dev &= 0xfc;
spn->spn_dev |= (port >> 8) & 0x03;
spn->spn_obj = port & 0xff;
}
static inline void pn_sockaddr_set_object(struct sockaddr_pn *spn,
__u16 handle)
{
spn->spn_dev = pn_dev(handle);
spn->spn_obj = pn_obj(handle);
}
static inline void pn_sockaddr_set_resource(struct sockaddr_pn *spn,
__u8 resource)
{
spn->spn_resource = resource;
}
static inline __u8 pn_sockaddr_get_addr(const struct sockaddr_pn *spn)
{
return spn->spn_dev & 0xfc;
}
static inline __u16 pn_sockaddr_get_port(const struct sockaddr_pn *spn)
{
return ((spn->spn_dev & 0x03) << 8) | spn->spn_obj;
}
static inline __u16 pn_sockaddr_get_object(const struct sockaddr_pn *spn)
{
return pn_object(spn->spn_dev, spn->spn_obj);
}
static inline __u8 pn_sockaddr_get_resource(const struct sockaddr_pn *spn)
{
return spn->spn_resource;
}
#endif
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