2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
6 * PF_INET6 protocol dispatch tables.
8 * Version: $Id: protocol.c,v 1.10 2001/05/18 02:25:49 davem Exp $
10 * Authors: Pedro Roque <roque@di.fc.ul.pt>
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version
15 * 2 of the License, or (at your option) any later version.
21 * Vince Laviano (vince@cs.stanford.edu) 16 May 2001
22 * - Removed unused variable 'inet6_protocol_base'
23 * - Modified inet6_del_protocol() to correctly maintain copy bit.
26 #include <linux/errno.h>
27 #include <linux/types.h>
28 #include <linux/socket.h>
29 #include <linux/sockios.h>
30 #include <linux/sched.h>
31 #include <linux/net.h>
32 #include <linux/in6.h>
33 #include <linux/netdevice.h>
34 #include <linux/if_arp.h>
40 #include <net/protocol.h>
42 struct inet6_protocol *inet6_protos[MAX_INET_PROTOS];
43 static DEFINE_SPINLOCK(inet6_proto_lock);
46 int inet6_add_protocol(struct inet6_protocol *prot, unsigned char protocol)
48 int ret, hash = protocol & (MAX_INET_PROTOS - 1);
50 spin_lock_bh(&inet6_proto_lock);
52 if (inet6_protos[hash]) {
55 inet6_protos[hash] = prot;
59 spin_unlock_bh(&inet6_proto_lock);
65 * Remove a protocol from the hash tables.
68 int inet6_del_protocol(struct inet6_protocol *prot, unsigned char protocol)
70 int ret, hash = protocol & (MAX_INET_PROTOS - 1);
72 spin_lock_bh(&inet6_proto_lock);
74 if (inet6_protos[hash] != prot) {
77 inet6_protos[hash] = NULL;
81 spin_unlock_bh(&inet6_proto_lock);