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Release 4.15 net/netfilter/xt_NFQUEUE.c

Directory: net/netfilter
/* iptables module for using new netfilter netlink queue
 *
 * (C) 2005 by Harald Welte <laforge@netfilter.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#include <linux/module.h>
#include <linux/skbuff.h>

#include <linux/netfilter.h>
#include <linux/netfilter_arp.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_NFQUEUE.h>

#include <net/netfilter/nf_queue.h>

MODULE_AUTHOR("Harald Welte <laforge@netfilter.org>");
MODULE_DESCRIPTION("Xtables: packet forwarding to netlink");
MODULE_LICENSE("GPL");
MODULE_ALIAS("ipt_NFQUEUE");
MODULE_ALIAS("ip6t_NFQUEUE");
MODULE_ALIAS("arpt_NFQUEUE");


static u32 jhash_initval __read_mostly;


static unsigned int nfqueue_tg(struct sk_buff *skb, const struct xt_action_param *par) { const struct xt_NFQ_info *tinfo = par->targinfo; return NF_QUEUE_NR(tinfo->queuenum); }

Contributors

PersonTokensPropCommitsCommitProp
Harald Welte3083.33%233.33%
Jan Engelhardt513.89%350.00%
Herbert Xu12.78%116.67%
Total36100.00%6100.00%


static unsigned int nfqueue_tg_v1(struct sk_buff *skb, const struct xt_action_param *par) { const struct xt_NFQ_info_v1 *info = par->targinfo; u32 queue = info->queuenum; if (info->queues_total > 1) { queue = nfqueue_hash(skb, queue, info->queues_total, xt_family(par), jhash_initval); } return NF_QUEUE_NR(queue); }

Contributors

PersonTokensPropCommitsCommitProp
Holger Eitzenberger5171.83%125.00%
Eric Leblond1014.08%125.00%
Florian Westphal79.86%125.00%
Pablo Neira Ayuso34.23%125.00%
Total71100.00%4100.00%


static unsigned int nfqueue_tg_v2(struct sk_buff *skb, const struct xt_action_param *par) { const struct xt_NFQ_info_v2 *info = par->targinfo; unsigned int ret = nfqueue_tg_v1(skb, par); if (info->bypass) ret |= NF_VERDICT_FLAG_QUEUE_BYPASS; return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Florian Westphal52100.00%1100.00%
Total52100.00%1100.00%


static int nfqueue_tg_check(const struct xt_tgchk_param *par) { const struct xt_NFQ_info_v3 *info = par->targinfo; u32 maxid; init_hashrandom(&jhash_initval); if (info->queues_total == 0) { pr_err("NFQUEUE: number of total queues is 0\n"); return -EINVAL; } maxid = info->queues_total - 1 + info->queuenum; if (maxid > 0xffff) { pr_err("NFQUEUE: number of queues (%u) out of range (got %u)\n", info->queues_total, maxid); return -ERANGE; } if (par->target->revision == 2 && info->flags > 1) return -EINVAL; if (par->target->revision == 3 && info->flags & ~NFQ_FLAG_MASK) return -EINVAL; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Florian Westphal9271.32%225.00%
Holger Eitzenberger2317.83%112.50%
Jan Engelhardt1310.08%450.00%
Eric Leblond10.78%112.50%
Total129100.00%8100.00%


static unsigned int nfqueue_tg_v3(struct sk_buff *skb, const struct xt_action_param *par) { const struct xt_NFQ_info_v3 *info = par->targinfo; u32 queue = info->queuenum; int ret; if (info->queues_total > 1) { if (info->flags & NFQ_FLAG_CPU_FANOUT) { int cpu = smp_processor_id(); queue = info->queuenum + cpu % info->queues_total; } else { queue = nfqueue_hash(skb, queue, info->queues_total, xt_family(par), jhash_initval); } } ret = NF_QUEUE_NR(queue); if (info->flags & NFQ_FLAG_BYPASS) ret |= NF_VERDICT_FLAG_QUEUE_BYPASS; return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Holger Eitzenberger10889.26%360.00%
Eric Leblond108.26%120.00%
Pablo Neira Ayuso32.48%120.00%
Total121100.00%5100.00%

static struct xt_target nfqueue_tg_reg[] __read_mostly = { { .name = "NFQUEUE", .family = NFPROTO_UNSPEC, .target = nfqueue_tg, .targetsize = sizeof(struct xt_NFQ_info), .me = THIS_MODULE, }, { .name = "NFQUEUE", .revision = 1, .family = NFPROTO_UNSPEC, .checkentry = nfqueue_tg_check, .target = nfqueue_tg_v1, .targetsize = sizeof(struct xt_NFQ_info_v1), .me = THIS_MODULE, }, { .name = "NFQUEUE", .revision = 2, .family = NFPROTO_UNSPEC, .checkentry = nfqueue_tg_check, .target = nfqueue_tg_v2, .targetsize = sizeof(struct xt_NFQ_info_v2), .me = THIS_MODULE, }, { .name = "NFQUEUE", .revision = 3, .family = NFPROTO_UNSPEC, .checkentry = nfqueue_tg_check, .target = nfqueue_tg_v3, .targetsize = sizeof(struct xt_NFQ_info_v3), .me = THIS_MODULE, }, };
static int __init nfqueue_tg_init(void) { return xt_register_targets(nfqueue_tg_reg, ARRAY_SIZE(nfqueue_tg_reg)); }

Contributors

PersonTokensPropCommitsCommitProp
Harald Welte1470.00%250.00%
Jan Engelhardt315.00%125.00%
Patrick McHardy315.00%125.00%
Total20100.00%4100.00%


static void __exit nfqueue_tg_exit(void) { xt_unregister_targets(nfqueue_tg_reg, ARRAY_SIZE(nfqueue_tg_reg)); }

Contributors

PersonTokensPropCommitsCommitProp
Harald Welte1368.42%240.00%
Patrick McHardy315.79%240.00%
Jan Engelhardt315.79%120.00%
Total19100.00%5100.00%

module_init(nfqueue_tg_init); module_exit(nfqueue_tg_exit);

Overall Contributors

PersonTokensPropCommitsCommitProp
Florian Westphal23935.25%312.00%
Holger Eitzenberger22332.89%312.00%
Harald Welte13019.17%28.00%
Jan Engelhardt324.72%936.00%
Eric Leblond263.83%14.00%
Patrick McHardy202.95%416.00%
Pablo Neira Ayuso60.88%14.00%
Herbert Xu10.15%14.00%
Hideaki Yoshifuji / 吉藤英明10.15%14.00%
Total678100.00%25100.00%
Directory: net/netfilter
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