ia64/linux-2.6.18-xen.hg

view net/netfilter/xt_mac.c @ 871:9cbcc9008446

xen/x86: don't initialize cpu_data[]'s apicid field on generic code

Afaict, this is not only redundant with the intialization done in
drivers/xen/core/smpboot.c, but actually results - at least for
secondary CPUs - in the Xen-specific value written to be later
overwritten with whatever the generic code determines (with no
guarantee that the two values are identical).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
author Keir Fraser <keir.fraser@citrix.com>
date Thu May 14 10:09:15 2009 +0100 (2009-05-14)
parents 831230e53067
children
line source
1 /* Kernel module to match MAC address parameters. */
3 /* (C) 1999-2001 Paul `Rusty' Russell
4 * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
11 #include <linux/module.h>
12 #include <linux/skbuff.h>
13 #include <linux/if_ether.h>
14 #include <linux/etherdevice.h>
16 #include <linux/netfilter_ipv4.h>
17 #include <linux/netfilter/xt_mac.h>
18 #include <linux/netfilter/x_tables.h>
20 MODULE_LICENSE("GPL");
21 MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>");
22 MODULE_DESCRIPTION("iptables mac matching module");
23 MODULE_ALIAS("ipt_mac");
24 MODULE_ALIAS("ip6t_mac");
26 static int
27 match(const struct sk_buff *skb,
28 const struct net_device *in,
29 const struct net_device *out,
30 const struct xt_match *match,
31 const void *matchinfo,
32 int offset,
33 unsigned int protoff,
34 int *hotdrop)
35 {
36 const struct xt_mac_info *info = matchinfo;
38 /* Is mac pointer valid? */
39 return (skb->mac.raw >= skb->head
40 && (skb->mac.raw + ETH_HLEN) <= skb->data
41 /* If so, compare... */
42 && ((!compare_ether_addr(eth_hdr(skb)->h_source, info->srcaddr))
43 ^ info->invert));
44 }
46 static struct xt_match mac_match = {
47 .name = "mac",
48 .match = match,
49 .matchsize = sizeof(struct xt_mac_info),
50 .hooks = (1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_IN) |
51 (1 << NF_IP_FORWARD),
52 .family = AF_INET,
53 .me = THIS_MODULE,
54 };
55 static struct xt_match mac6_match = {
56 .name = "mac",
57 .match = match,
58 .matchsize = sizeof(struct xt_mac_info),
59 .hooks = (1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_IN) |
60 (1 << NF_IP_FORWARD),
61 .family = AF_INET6,
62 .me = THIS_MODULE,
63 };
65 static int __init xt_mac_init(void)
66 {
67 int ret;
68 ret = xt_register_match(&mac_match);
69 if (ret)
70 return ret;
72 ret = xt_register_match(&mac6_match);
73 if (ret)
74 xt_unregister_match(&mac_match);
76 return ret;
77 }
79 static void __exit xt_mac_fini(void)
80 {
81 xt_unregister_match(&mac_match);
82 xt_unregister_match(&mac6_match);
83 }
85 module_init(xt_mac_init);
86 module_exit(xt_mac_fini);