/***
|
*
|
* ipv4/protocol.c
|
*
|
* rtnet - real-time networking subsystem
|
* Copyright (C) 1999, 2000 Zentropic Computing, LLC
|
* 2002 Ulrich Marx <marx@kammer.uni-hannover.de>
|
* 2004, 2005 Jan Kiszka <jan.kiszka@web.de>
|
*
|
* This program is free software; you can redistribute it and/or modify
|
* it under the terms of the GNU General Public License as published by
|
* the Free Software Foundation; either version 2 of the License, or
|
* (at your option) any later version.
|
*
|
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
|
*
|
*/
|
|
#include <linux/socket.h>
|
#include <linux/in.h>
|
|
#include <rtnet_socket.h>
|
#include <ipv4/protocol.h>
|
|
struct rtinet_protocol *rt_inet_protocols[MAX_RT_INET_PROTOCOLS];
|
|
/***
|
* rt_inet_add_protocol
|
*/
|
void rt_inet_add_protocol(struct rtinet_protocol *prot)
|
{
|
unsigned char hash = rt_inet_hashkey(prot->protocol);
|
|
if (rt_inet_protocols[hash] == NULL)
|
rt_inet_protocols[hash] = prot;
|
}
|
EXPORT_SYMBOL_GPL(rt_inet_add_protocol);
|
|
/***
|
* rt_inet_del_protocol
|
*/
|
void rt_inet_del_protocol(struct rtinet_protocol *prot)
|
{
|
unsigned char hash = rt_inet_hashkey(prot->protocol);
|
|
if (prot == rt_inet_protocols[hash])
|
rt_inet_protocols[hash] = NULL;
|
}
|
EXPORT_SYMBOL_GPL(rt_inet_del_protocol);
|
|
/***
|
* rt_inet_socket - initialize an Internet socket
|
* @sock: socket structure
|
* @protocol: protocol id
|
*/
|
int rt_inet_socket(struct rtdm_fd *fd, int protocol)
|
{
|
struct rtinet_protocol *prot;
|
|
if (protocol == 0)
|
switch (rtdm_fd_to_context(fd)->device->driver->socket_type) {
|
case SOCK_DGRAM:
|
protocol = IPPROTO_UDP;
|
break;
|
case SOCK_STREAM:
|
protocol = IPPROTO_TCP;
|
break;
|
}
|
|
prot = rt_inet_protocols[rt_inet_hashkey(protocol)];
|
|
/* create the socket (call the socket creator) */
|
if ((prot != NULL) && (prot->protocol == protocol))
|
return prot->init_socket(fd);
|
else {
|
rtdm_printk("RTnet: protocol with id %d not found\n", protocol);
|
|
return -ENOPROTOOPT;
|
}
|
}
|
EXPORT_SYMBOL_GPL(rt_inet_socket);
|
