kernel-fxtec-pro1x/include/net/phonet/phonet.h
Remi Denis-Courmont 4b07b3f69a Phonet: PF_PHONET protocol family support
This is the basis for the Phonet protocol families, and introduces
the ETH_P_PHONET packet type and the PF_PHONET socket family.

Signed-off-by: Remi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-22 20:02:10 -07:00

74 lines
2 KiB
C

/*
* File: af_phonet.h
*
* Phonet sockets kernel definitions
*
* Copyright (C) 2008 Nokia Corporation.
*
* 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 AF_PHONET_H
#define AF_PHONET_H
/*
* The lower layers may not require more space, ever. Make sure it's
* enough.
*/
#define MAX_PHONET_HEADER 8
static inline struct phonethdr *pn_hdr(struct sk_buff *skb)
{
return (struct phonethdr *)skb_network_header(skb);
}
/*
* Get the other party's sockaddr from received skb. The skb begins
* with a Phonet header.
*/
static inline
void pn_skb_get_src_sockaddr(struct sk_buff *skb, struct sockaddr_pn *sa)
{
struct phonethdr *ph = pn_hdr(skb);
u16 obj = pn_object(ph->pn_sdev, ph->pn_sobj);
sa->spn_family = AF_PHONET;
pn_sockaddr_set_object(sa, obj);
pn_sockaddr_set_resource(sa, ph->pn_res);
memset(sa->spn_zero, 0, sizeof(sa->spn_zero));
}
static inline
void pn_skb_get_dst_sockaddr(struct sk_buff *skb, struct sockaddr_pn *sa)
{
struct phonethdr *ph = pn_hdr(skb);
u16 obj = pn_object(ph->pn_rdev, ph->pn_robj);
sa->spn_family = AF_PHONET;
pn_sockaddr_set_object(sa, obj);
pn_sockaddr_set_resource(sa, ph->pn_res);
memset(sa->spn_zero, 0, sizeof(sa->spn_zero));
}
/* Protocols in Phonet protocol family. */
struct phonet_protocol {
struct proto *prot;
int sock_type;
};
int phonet_proto_register(int protocol, struct phonet_protocol *pp);
void phonet_proto_unregister(int protocol, struct phonet_protocol *pp);
#endif