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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105// SPDX-License-Identifier: GPL-2.0-only/* * xt_mark - Netfilter module to match NFMARK value * * (C) 1999-2001 Marc Boucher <marc@mbsi.ca> * Copyright © CC Computer Consultants GmbH, 2007 - 2008 * Jan Engelhardt <jengelh@medozas.de> */
#include <linux/module.h>#include <linux/skbuff.h>
#include <linux/netfilter/xt_mark.h>#include <linux/netfilter/x_tables.h>
MODULE_LICENSE("GPL");MODULE_AUTHOR("Marc Boucher <marc@mbsi.ca>");MODULE_DESCRIPTION("Xtables: packet mark operations");MODULE_ALIAS("ipt_mark");MODULE_ALIAS("ip6t_mark");MODULE_ALIAS("ipt_MARK");MODULE_ALIAS("ip6t_MARK");MODULE_ALIAS("arpt_MARK");
static unsigned intmark_tg(struct sk_buff *skb, const struct xt_action_param *par){ const struct xt_mark_tginfo2 *info = par->targinfo;
skb->mark = (skb->mark & ~info->mask) ^ info->mark; return XT_CONTINUE;}
static boolmark_mt(const struct sk_buff *skb, struct xt_action_param *par){ const struct xt_mark_mtinfo1 *info = par->matchinfo;
return ((skb->mark & info->mask) == info->mark) ^ info->invert;}
static struct xt_target mark_tg_reg[] __read_mostly = { { .name = "MARK", .revision = 2, .family = NFPROTO_IPV4, .target = mark_tg, .targetsize = sizeof(struct xt_mark_tginfo2), .me = THIS_MODULE, },#if IS_ENABLED(CONFIG_IP_NF_ARPTABLES) || IS_ENABLED(CONFIG_NFT_COMPAT_ARP) { .name = "MARK", .revision = 2, .family = NFPROTO_ARP, .target = mark_tg, .targetsize = sizeof(struct xt_mark_tginfo2), .me = THIS_MODULE, },#endif#if IS_ENABLED(CONFIG_IP6_NF_IPTABLES) { .name = "MARK", .revision = 2, .family = NFPROTO_IPV6, .target = mark_tg, .targetsize = sizeof(struct xt_mark_tginfo2), .me = THIS_MODULE, },#endif};
static struct xt_match mark_mt_reg __read_mostly = { .name = "mark", .revision = 1, .family = NFPROTO_UNSPEC, .match = mark_mt, .matchsize = sizeof(struct xt_mark_mtinfo1), .me = THIS_MODULE,};
static int __init mark_mt_init(void){ int ret;
ret = xt_register_targets(mark_tg_reg, ARRAY_SIZE(mark_tg_reg)); if (ret < 0) return ret; ret = xt_register_match(&mark_mt_reg); if (ret < 0) { xt_unregister_targets(mark_tg_reg, ARRAY_SIZE(mark_tg_reg)); return ret; } return 0;}
static void __exit mark_mt_exit(void){ xt_unregister_match(&mark_mt_reg); xt_unregister_targets(mark_tg_reg, ARRAY_SIZE(mark_tg_reg));}
module_init(mark_mt_init);module_exit(mark_mt_exit);