mirror of
https://github.com/torvalds/linux.git
synced 2024-11-11 14:42:24 +00:00
90 lines
2.0 KiB
C
90 lines
2.0 KiB
C
/*
|
|
* INET An implementation of the TCP/IP protocol suite for the LINUX
|
|
* operating system. INET is implemented using the BSD Socket
|
|
* interface as the means of communication with the user level.
|
|
*
|
|
* PF_INET6 protocol dispatch tables.
|
|
*
|
|
* Version: $Id: protocol.c,v 1.10 2001/05/18 02:25:49 davem Exp $
|
|
*
|
|
* Authors: Pedro Roque <roque@di.fc.ul.pt>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
/*
|
|
* Changes:
|
|
*
|
|
* Vince Laviano (vince@cs.stanford.edu) 16 May 2001
|
|
* - Removed unused variable 'inet6_protocol_base'
|
|
* - Modified inet6_del_protocol() to correctly maintain copy bit.
|
|
*/
|
|
|
|
#include <linux/errno.h>
|
|
#include <linux/types.h>
|
|
#include <linux/socket.h>
|
|
#include <linux/sockios.h>
|
|
#include <linux/net.h>
|
|
#include <linux/in6.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/if_arp.h>
|
|
|
|
#include <net/sock.h>
|
|
#include <net/snmp.h>
|
|
|
|
#include <net/ipv6.h>
|
|
#include <net/protocol.h>
|
|
|
|
struct inet6_protocol *inet6_protos[MAX_INET_PROTOS];
|
|
static DEFINE_SPINLOCK(inet6_proto_lock);
|
|
|
|
|
|
int inet6_add_protocol(struct inet6_protocol *prot, unsigned char protocol)
|
|
{
|
|
int ret, hash = protocol & (MAX_INET_PROTOS - 1);
|
|
|
|
spin_lock_bh(&inet6_proto_lock);
|
|
|
|
if (inet6_protos[hash]) {
|
|
ret = -1;
|
|
} else {
|
|
inet6_protos[hash] = prot;
|
|
ret = 0;
|
|
}
|
|
|
|
spin_unlock_bh(&inet6_proto_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
EXPORT_SYMBOL(inet6_add_protocol);
|
|
|
|
/*
|
|
* Remove a protocol from the hash tables.
|
|
*/
|
|
|
|
int inet6_del_protocol(struct inet6_protocol *prot, unsigned char protocol)
|
|
{
|
|
int ret, hash = protocol & (MAX_INET_PROTOS - 1);
|
|
|
|
spin_lock_bh(&inet6_proto_lock);
|
|
|
|
if (inet6_protos[hash] != prot) {
|
|
ret = -1;
|
|
} else {
|
|
inet6_protos[hash] = NULL;
|
|
ret = 0;
|
|
}
|
|
|
|
spin_unlock_bh(&inet6_proto_lock);
|
|
|
|
synchronize_net();
|
|
|
|
return ret;
|
|
}
|
|
|
|
EXPORT_SYMBOL(inet6_del_protocol);
|