4b07b3f69a
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>
74 lines
2 KiB
C
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
|