Contributors: 7
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Florian Westphal |
195 |
43.24% |
2 |
9.52% |
| Bart De Schuymer |
189 |
41.91% |
2 |
9.52% |
| Jan Engelhardt |
55 |
12.20% |
13 |
61.90% |
| Linus Torvalds |
5 |
1.11% |
1 |
4.76% |
| Andrew Morton |
4 |
0.89% |
1 |
4.76% |
| Thomas Graf |
2 |
0.44% |
1 |
4.76% |
| Thomas Gleixner |
1 |
0.22% |
1 |
4.76% |
| Total |
451 |
|
21 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* ebt_mark_m
*
* Authors:
* Bart De Schuymer <bdschuym@pandora.be>
*
* July, 2002
*
*/
#include <linux/module.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_bridge/ebtables.h>
#include <linux/netfilter_bridge/ebt_mark_m.h>
static bool
ebt_mark_mt(const struct sk_buff *skb, struct xt_action_param *par)
{
const struct ebt_mark_m_info *info = par->matchinfo;
if (info->bitmask & EBT_MARK_OR)
return !!(skb->mark & info->mask) ^ info->invert;
return ((skb->mark & info->mask) == info->mark) ^ info->invert;
}
static int ebt_mark_mt_check(const struct xt_mtchk_param *par)
{
const struct ebt_mark_m_info *info = par->matchinfo;
if (info->bitmask & ~EBT_MARK_MASK)
return -EINVAL;
if ((info->bitmask & EBT_MARK_OR) && (info->bitmask & EBT_MARK_AND))
return -EINVAL;
if (!info->bitmask)
return -EINVAL;
return 0;
}
#ifdef CONFIG_NETFILTER_XTABLES_COMPAT
struct compat_ebt_mark_m_info {
compat_ulong_t mark, mask;
uint8_t invert, bitmask;
};
static void mark_mt_compat_from_user(void *dst, const void *src)
{
const struct compat_ebt_mark_m_info *user = src;
struct ebt_mark_m_info *kern = dst;
kern->mark = user->mark;
kern->mask = user->mask;
kern->invert = user->invert;
kern->bitmask = user->bitmask;
}
static int mark_mt_compat_to_user(void __user *dst, const void *src)
{
struct compat_ebt_mark_m_info __user *user = dst;
const struct ebt_mark_m_info *kern = src;
if (put_user(kern->mark, &user->mark) ||
put_user(kern->mask, &user->mask) ||
put_user(kern->invert, &user->invert) ||
put_user(kern->bitmask, &user->bitmask))
return -EFAULT;
return 0;
}
#endif
static struct xt_match ebt_mark_mt_reg __read_mostly = {
.name = "mark_m",
.revision = 0,
.family = NFPROTO_BRIDGE,
.match = ebt_mark_mt,
.checkentry = ebt_mark_mt_check,
.matchsize = sizeof(struct ebt_mark_m_info),
#ifdef CONFIG_NETFILTER_XTABLES_COMPAT
.compatsize = sizeof(struct compat_ebt_mark_m_info),
.compat_from_user = mark_mt_compat_from_user,
.compat_to_user = mark_mt_compat_to_user,
#endif
.me = THIS_MODULE,
};
static int __init ebt_mark_m_init(void)
{
return xt_register_match(&ebt_mark_mt_reg);
}
static void __exit ebt_mark_m_fini(void)
{
xt_unregister_match(&ebt_mark_mt_reg);
}
module_init(ebt_mark_m_init);
module_exit(ebt_mark_m_fini);
MODULE_DESCRIPTION("Ebtables: Packet mark match");
MODULE_LICENSE("GPL");