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Diffstat (limited to 'net/netfilter/xt_CONNMARK.c')
-rw-r--r--net/netfilter/xt_CONNMARK.c261
1 files changed, 0 insertions, 261 deletions
diff --git a/net/netfilter/xt_CONNMARK.c b/net/netfilter/xt_CONNMARK.c
deleted file mode 100644
index 5fecfb4794b..00000000000
--- a/net/netfilter/xt_CONNMARK.c
+++ /dev/null
@@ -1,261 +0,0 @@
-/*
- * xt_CONNMARK - Netfilter module to modify the connection mark values
- *
- * Copyright (C) 2002,2004 MARA Systems AB <http://www.marasystems.com>
- * by Henrik Nordstrom <hno@marasystems.com>
- * Copyright © CC Computer Consultants GmbH, 2007 - 2008
- * Jan Engelhardt <jengelh@computergmbh.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-#include <linux/module.h>
-#include <linux/skbuff.h>
-#include <linux/ip.h>
-#include <net/checksum.h>
-
-MODULE_AUTHOR("Henrik Nordstrom <hno@marasystems.com>");
-MODULE_DESCRIPTION("Xtables: connection mark modification");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("ipt_CONNMARK");
-MODULE_ALIAS("ip6t_CONNMARK");
-
-#include <linux/netfilter/x_tables.h>
-#include <linux/netfilter/xt_CONNMARK.h>
-#include <net/netfilter/nf_conntrack_ecache.h>
-
-static unsigned int
-connmark_tg_v0(struct sk_buff *skb, const struct net_device *in,
- const struct net_device *out, unsigned int hooknum,
- const struct xt_target *target, const void *targinfo)
-{
- const struct xt_connmark_target_info *markinfo = targinfo;
- struct nf_conn *ct;
- enum ip_conntrack_info ctinfo;
- u_int32_t diff;
- u_int32_t mark;
- u_int32_t newmark;
-
- ct = nf_ct_get(skb, &ctinfo);
- if (ct) {
- switch(markinfo->mode) {
- case XT_CONNMARK_SET:
- newmark = (ct->mark & ~markinfo->mask) | markinfo->mark;
- if (newmark != ct->mark) {
- ct->mark = newmark;
- nf_conntrack_event_cache(IPCT_MARK, skb);
- }
- break;
- case XT_CONNMARK_SAVE:
- newmark = (ct->mark & ~markinfo->mask) |
- (skb->mark & markinfo->mask);
- if (ct->mark != newmark) {
- ct->mark = newmark;
- nf_conntrack_event_cache(IPCT_MARK, skb);
- }
- break;
- case XT_CONNMARK_RESTORE:
- mark = skb->mark;
- diff = (ct->mark ^ mark) & markinfo->mask;
- skb->mark = mark ^ diff;
- break;
- }
- }
-
- return XT_CONTINUE;
-}
-
-static unsigned int
-connmark_tg(struct sk_buff *skb, const struct net_device *in,
- const struct net_device *out, unsigned int hooknum,
- const struct xt_target *target, const void *targinfo)
-{
- const struct xt_connmark_tginfo1 *info = targinfo;
- enum ip_conntrack_info ctinfo;
- struct nf_conn *ct;
- u_int32_t newmark;
-
- ct = nf_ct_get(skb, &ctinfo);
- if (ct == NULL)
- return XT_CONTINUE;
-
- switch (info->mode) {
- case XT_CONNMARK_SET:
- newmark = (ct->mark & ~info->ctmask) ^ info->ctmark;
- if (ct->mark != newmark) {
- ct->mark = newmark;
- nf_conntrack_event_cache(IPCT_MARK, skb);
- }
- break;
- case XT_CONNMARK_SAVE:
- newmark = (ct->mark & ~info->ctmask) ^
- (skb->mark & info->nfmask);
- if (ct->mark != newmark) {
- ct->mark = newmark;
- nf_conntrack_event_cache(IPCT_MARK, skb);
- }
- break;
- case XT_CONNMARK_RESTORE:
- newmark = (skb->mark & ~info->nfmask) ^
- (ct->mark & info->ctmask);
- skb->mark = newmark;
- break;
- }
-
- return XT_CONTINUE;
-}
-
-static bool
-connmark_tg_check_v0(const char *tablename, const void *entry,
- const struct xt_target *target, void *targinfo,
- unsigned int hook_mask)
-{
- const struct xt_connmark_target_info *matchinfo = targinfo;
-
- if (matchinfo->mode == XT_CONNMARK_RESTORE) {
- if (strcmp(tablename, "mangle") != 0) {
- printk(KERN_WARNING "CONNMARK: restore can only be "
- "called from \"mangle\" table, not \"%s\"\n",
- tablename);
- return false;
- }
- }
- if (matchinfo->mark > 0xffffffff || matchinfo->mask > 0xffffffff) {
- printk(KERN_WARNING "CONNMARK: Only supports 32bit mark\n");
- return false;
- }
- if (nf_ct_l3proto_try_module_get(target->family) < 0) {
- printk(KERN_WARNING "can't load conntrack support for "
- "proto=%u\n", target->family);
- return false;
- }
- return true;
-}
-
-static bool
-connmark_tg_check(const char *tablename, const void *entry,
- const struct xt_target *target, void *targinfo,
- unsigned int hook_mask)
-{
- if (nf_ct_l3proto_try_module_get(target->family) < 0) {
- printk(KERN_WARNING "cannot load conntrack support for "
- "proto=%u\n", target->family);
- return false;
- }
- return true;
-}
-
-static void
-connmark_tg_destroy(const struct xt_target *target, void *targinfo)
-{
- nf_ct_l3proto_module_put(target->family);
-}
-
-#ifdef CONFIG_COMPAT
-struct compat_xt_connmark_target_info {
- compat_ulong_t mark, mask;
- u_int8_t mode;
- u_int8_t __pad1;
- u_int16_t __pad2;
-};
-
-static void connmark_tg_compat_from_user_v0(void *dst, void *src)
-{
- const struct compat_xt_connmark_target_info *cm = src;
- struct xt_connmark_target_info m = {
- .mark = cm->mark,
- .mask = cm->mask,
- .mode = cm->mode,
- };
- memcpy(dst, &m, sizeof(m));
-}
-
-static int connmark_tg_compat_to_user_v0(void __user *dst, void *src)
-{
- const struct xt_connmark_target_info *m = src;
- struct compat_xt_connmark_target_info cm = {
- .mark = m->mark,
- .mask = m->mask,
- .mode = m->mode,
- };
- return copy_to_user(dst, &cm, sizeof(cm)) ? -EFAULT : 0;
-}
-#endif /* CONFIG_COMPAT */
-
-static struct xt_target connmark_tg_reg[] __read_mostly = {
- {
- .name = "CONNMARK",
- .revision = 0,
- .family = AF_INET,
- .checkentry = connmark_tg_check_v0,
- .destroy = connmark_tg_destroy,
- .target = connmark_tg_v0,
- .targetsize = sizeof(struct xt_connmark_target_info),
-#ifdef CONFIG_COMPAT
- .compatsize = sizeof(struct compat_xt_connmark_target_info),
- .compat_from_user = connmark_tg_compat_from_user_v0,
- .compat_to_user = connmark_tg_compat_to_user_v0,
-#endif
- .me = THIS_MODULE
- },
- {
- .name = "CONNMARK",
- .revision = 0,
- .family = AF_INET6,
- .checkentry = connmark_tg_check_v0,
- .destroy = connmark_tg_destroy,
- .target = connmark_tg_v0,
- .targetsize = sizeof(struct xt_connmark_target_info),
-#ifdef CONFIG_COMPAT
- .compatsize = sizeof(struct compat_xt_connmark_target_info),
- .compat_from_user = connmark_tg_compat_from_user_v0,
- .compat_to_user = connmark_tg_compat_to_user_v0,
-#endif
- .me = THIS_MODULE
- },
- {
- .name = "CONNMARK",
- .revision = 1,
- .family = AF_INET,
- .checkentry = connmark_tg_check,
- .target = connmark_tg,
- .targetsize = sizeof(struct xt_connmark_tginfo1),
- .destroy = connmark_tg_destroy,
- .me = THIS_MODULE,
- },
- {
- .name = "CONNMARK",
- .revision = 1,
- .family = AF_INET6,
- .checkentry = connmark_tg_check,
- .target = connmark_tg,
- .targetsize = sizeof(struct xt_connmark_tginfo1),
- .destroy = connmark_tg_destroy,
- .me = THIS_MODULE,
- },
-};
-
-static int __init connmark_tg_init(void)
-{
- return xt_register_targets(connmark_tg_reg,
- ARRAY_SIZE(connmark_tg_reg));
-}
-
-static void __exit connmark_tg_exit(void)
-{
- xt_unregister_targets(connmark_tg_reg, ARRAY_SIZE(connmark_tg_reg));
-}
-
-module_init(connmark_tg_init);
-module_exit(connmark_tg_exit);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 02:02:49 +0000