MODULE_LICENSE("GPL");
MODULE_AUTHOR("Bart De Schuymer <bdschuym@pandora.be>");
-MODULE_DESCRIPTION("iptables bridge physical device match module");
+MODULE_DESCRIPTION("Xtables: Bridge physical device match");
MODULE_ALIAS("ipt_physdev");
MODULE_ALIAS("ip6t_physdev");
+
static bool
-physdev_mt(const struct sk_buff *skb, const struct net_device *in,
- const struct net_device *out, const struct xt_match *match,
- const void *matchinfo, int offset, unsigned int protoff,
- bool *hotdrop)
+physdev_mt(const struct sk_buff *skb, const struct xt_match_param *par)
{
- int i;
- static const char nulldevname[IFNAMSIZ];
- const struct xt_physdev_info *info = matchinfo;
- bool ret;
+ static const char nulldevname[IFNAMSIZ] __attribute__((aligned(sizeof(long))));
+ const struct xt_physdev_info *info = par->matchinfo;
+ unsigned long ret;
const char *indev, *outdev;
const struct nf_bridge_info *nf_bridge;
if (!(info->bitmask & XT_PHYSDEV_OP_IN))
goto match_outdev;
indev = nf_bridge->physindev ? nf_bridge->physindev->name : nulldevname;
- for (i = 0, ret = false; i < IFNAMSIZ/sizeof(unsigned int); i++) {
- ret |= (((const unsigned int *)indev)[i]
- ^ ((const unsigned int *)info->physindev)[i])
- & ((const unsigned int *)info->in_mask)[i];
- }
+ ret = ifname_compare_aligned(indev, info->physindev, info->in_mask);
if (!ret ^ !(info->invert & XT_PHYSDEV_OP_IN))
return false;
return true;
outdev = nf_bridge->physoutdev ?
nf_bridge->physoutdev->name : nulldevname;
- for (i = 0, ret = false; i < IFNAMSIZ/sizeof(unsigned int); i++) {
- ret |= (((const unsigned int *)outdev)[i]
- ^ ((const unsigned int *)info->physoutdev)[i])
- & ((const unsigned int *)info->out_mask)[i];
- }
+ ret = ifname_compare_aligned(outdev, info->physoutdev, info->out_mask);
- return ret ^ !(info->invert & XT_PHYSDEV_OP_OUT);
+ return (!!ret ^ !(info->invert & XT_PHYSDEV_OP_OUT));
}
-static bool
-physdev_mt_check(const char *tablename, const void *ip,
- const struct xt_match *match, void *matchinfo,
- unsigned int hook_mask)
+static bool physdev_mt_check(const struct xt_mtchk_param *par)
{
- const struct xt_physdev_info *info = matchinfo;
+ const struct xt_physdev_info *info = par->matchinfo;
if (!(info->bitmask & XT_PHYSDEV_OP_MASK) ||
info->bitmask & ~XT_PHYSDEV_OP_MASK)
if (info->bitmask & XT_PHYSDEV_OP_OUT &&
(!(info->bitmask & XT_PHYSDEV_OP_BRIDGED) ||
info->invert & XT_PHYSDEV_OP_BRIDGED) &&
- hook_mask & ((1 << NF_INET_LOCAL_OUT) | (1 << NF_INET_FORWARD) |
- (1 << NF_INET_POST_ROUTING))) {
+ par->hook_mask & ((1 << NF_INET_LOCAL_OUT) |
+ (1 << NF_INET_FORWARD) | (1 << NF_INET_POST_ROUTING))) {
printk(KERN_WARNING "physdev match: using --physdev-out in the "
"OUTPUT, FORWARD and POSTROUTING chains for non-bridged "
"traffic is not supported anymore.\n");
- if (hook_mask & (1 << NF_INET_LOCAL_OUT))
+ if (par->hook_mask & (1 << NF_INET_LOCAL_OUT))
return false;
}
return true;
}
-static struct xt_match physdev_mt_reg[] __read_mostly = {
- {
- .name = "physdev",
- .family = AF_INET,
- .checkentry = physdev_mt_check,
- .match = physdev_mt,
- .matchsize = sizeof(struct xt_physdev_info),
- .me = THIS_MODULE,
- },
- {
- .name = "physdev",
- .family = AF_INET6,
- .checkentry = physdev_mt_check,
- .match = physdev_mt,
- .matchsize = sizeof(struct xt_physdev_info),
- .me = THIS_MODULE,
- },
+static struct xt_match physdev_mt_reg __read_mostly = {
+ .name = "physdev",
+ .revision = 0,
+ .family = NFPROTO_UNSPEC,
+ .checkentry = physdev_mt_check,
+ .match = physdev_mt,
+ .matchsize = sizeof(struct xt_physdev_info),
+ .me = THIS_MODULE,
};
static int __init physdev_mt_init(void)
{
- return xt_register_matches(physdev_mt_reg, ARRAY_SIZE(physdev_mt_reg));
+ return xt_register_match(&physdev_mt_reg);
}
static void __exit physdev_mt_exit(void)
{
- xt_unregister_matches(physdev_mt_reg, ARRAY_SIZE(physdev_mt_reg));
+ xt_unregister_match(&physdev_mt_reg);
}
module_init(physdev_mt_init);