Contributors: 9
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Bart De Schuymer |
224 |
49.56% |
4 |
16.00% |
| Florian Westphal |
151 |
33.41% |
2 |
8.00% |
| Jan Engelhardt |
55 |
12.17% |
13 |
52.00% |
| Linus Torvalds |
5 |
1.11% |
1 |
4.00% |
| Herbert Xu |
5 |
1.11% |
1 |
4.00% |
| Thomas Graf |
4 |
0.88% |
1 |
4.00% |
| Andrew Morton |
4 |
0.88% |
1 |
4.00% |
| Gao Feng |
3 |
0.66% |
1 |
4.00% |
| Thomas Gleixner |
1 |
0.22% |
1 |
4.00% |
| Total |
452 |
|
25 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* ebt_mark
*
* Authors:
* Bart De Schuymer <bdschuym@pandora.be>
*
* July, 2002
*
*/
/* The mark target can be used in any chain,
* I believe adding a mangle table just for marking is total overkill.
* Marking a frame doesn't really change anything in the frame anyway.
*/
#include <linux/module.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter_bridge/ebtables.h>
#include <linux/netfilter_bridge/ebt_mark_t.h>
static unsigned int
ebt_mark_tg(struct sk_buff *skb, const struct xt_action_param *par)
{
const struct ebt_mark_t_info *info = par->targinfo;
int action = info->target & -16;
if (action == MARK_SET_VALUE)
skb->mark = info->mark;
else if (action == MARK_OR_VALUE)
skb->mark |= info->mark;
else if (action == MARK_AND_VALUE)
skb->mark &= info->mark;
else
skb->mark ^= info->mark;
return info->target | ~EBT_VERDICT_BITS;
}
static int ebt_mark_tg_check(const struct xt_tgchk_param *par)
{
const struct ebt_mark_t_info *info = par->targinfo;
int tmp;
tmp = info->target | ~EBT_VERDICT_BITS;
if (BASE_CHAIN && tmp == EBT_RETURN)
return -EINVAL;
if (ebt_invalid_target(tmp))
return -EINVAL;
tmp = info->target & ~EBT_VERDICT_BITS;
if (tmp != MARK_SET_VALUE && tmp != MARK_OR_VALUE &&
tmp != MARK_AND_VALUE && tmp != MARK_XOR_VALUE)
return -EINVAL;
return 0;
}
#ifdef CONFIG_NETFILTER_XTABLES_COMPAT
struct compat_ebt_mark_t_info {
compat_ulong_t mark;
compat_uint_t target;
};
static void mark_tg_compat_from_user(void *dst, const void *src)
{
const struct compat_ebt_mark_t_info *user = src;
struct ebt_mark_t_info *kern = dst;
kern->mark = user->mark;
kern->target = user->target;
}
static int mark_tg_compat_to_user(void __user *dst, const void *src)
{
struct compat_ebt_mark_t_info __user *user = dst;
const struct ebt_mark_t_info *kern = src;
if (put_user(kern->mark, &user->mark) ||
put_user(kern->target, &user->target))
return -EFAULT;
return 0;
}
#endif
static struct xt_target ebt_mark_tg_reg __read_mostly = {
.name = "mark",
.revision = 0,
.family = NFPROTO_BRIDGE,
.target = ebt_mark_tg,
.checkentry = ebt_mark_tg_check,
.targetsize = sizeof(struct ebt_mark_t_info),
#ifdef CONFIG_NETFILTER_XTABLES_COMPAT
.compatsize = sizeof(struct compat_ebt_mark_t_info),
.compat_from_user = mark_tg_compat_from_user,
.compat_to_user = mark_tg_compat_to_user,
#endif
.me = THIS_MODULE,
};
static int __init ebt_mark_init(void)
{
return xt_register_target(&ebt_mark_tg_reg);
}
static void __exit ebt_mark_fini(void)
{
xt_unregister_target(&ebt_mark_tg_reg);
}
module_init(ebt_mark_init);
module_exit(ebt_mark_fini);
MODULE_DESCRIPTION("Ebtables: Packet mark modification");
MODULE_LICENSE("GPL");