ia64/linux-2.6.18-xen.hg

view net/ipv6/protocol.c @ 673:3161879fdf22

[IA64] xencomm: support XENMEM_add_to_physmap and XENMEM_remove_from_phsymap

support XENMEM_add_to_physmap and XENMEM_remove_from_phsymap.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author Isaku Yamahata <yamahata@valinux.co.jp>
date Tue Sep 16 21:26:15 2008 +0900 (2008-09-16)
parents 831230e53067
children
line source
1 /*
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.
5 *
6 * PF_INET6 protocol dispatch tables.
7 *
8 * Version: $Id: protocol.c,v 1.10 2001/05/18 02:25:49 davem Exp $
9 *
10 * Authors: Pedro Roque <roque@di.fc.ul.pt>
11 *
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.
16 */
18 /*
19 * Changes:
20 *
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.
24 */
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>
36 #include <net/sock.h>
37 #include <net/snmp.h>
39 #include <net/ipv6.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)
47 {
48 int ret, hash = protocol & (MAX_INET_PROTOS - 1);
50 spin_lock_bh(&inet6_proto_lock);
52 if (inet6_protos[hash]) {
53 ret = -1;
54 } else {
55 inet6_protos[hash] = prot;
56 ret = 0;
57 }
59 spin_unlock_bh(&inet6_proto_lock);
61 return ret;
62 }
64 /*
65 * Remove a protocol from the hash tables.
66 */
68 int inet6_del_protocol(struct inet6_protocol *prot, unsigned char protocol)
69 {
70 int ret, hash = protocol & (MAX_INET_PROTOS - 1);
72 spin_lock_bh(&inet6_proto_lock);
74 if (inet6_protos[hash] != prot) {
75 ret = -1;
76 } else {
77 inet6_protos[hash] = NULL;
78 ret = 0;
79 }
81 spin_unlock_bh(&inet6_proto_lock);
83 synchronize_net();
85 return ret;
86 }