cregit-Linux how code gets into the kernel

Release 4.11 net/netfilter/xt_state.c

Directory: net/netfilter
/* Kernel module to match connection tracking information. */

/* (C) 1999-2001 Paul `Rusty' Russell
 * (C) 2002-2005 Netfilter Core Team <coreteam@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 <net/netfilter/nf_conntrack.h>
#include <linux/netfilter/x_tables.h>
#include <linux/netfilter/xt_state.h>

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Rusty Russell <rusty@rustcorp.com.au>");
MODULE_DESCRIPTION("ip[6]_tables connection tracking state match module");
MODULE_ALIAS("ipt_state");
MODULE_ALIAS("ip6t_state");


static bool state_mt(const struct sk_buff *skb, struct xt_action_param *par) { const struct xt_state_info *sinfo = par->matchinfo; enum ip_conntrack_info ctinfo; unsigned int statebit; struct nf_conn *ct = nf_ct_get(skb, &ctinfo); if (!ct) statebit = XT_STATE_INVALID; else { if (nf_ct_is_untracked(ct)) statebit = XT_STATE_UNTRACKED; else statebit = XT_STATE_BIT(ctinfo); } return (sinfo->statemask & statebit); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)5056.82%111.11%
Eric Dumazet2123.86%111.11%
Harald Welte910.23%222.22%
Jan Engelhardt66.82%444.44%
Yasuyuki Kozakai22.27%111.11%
Total88100.00%9100.00%


static int state_mt_check(const struct xt_mtchk_param *par) { int ret; ret = nf_ct_netns_get(par->net, par->family); if (ret < 0) pr_info("cannot load conntrack support for proto=%u\n", par->family); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Pablo Neira Ayuso2145.65%114.29%
Jan Engelhardt2043.48%571.43%
Florian Westphal510.87%114.29%
Total46100.00%7100.00%


static void state_mt_destroy(const struct xt_mtdtor_param *par) { nf_ct_netns_put(par->net, par->family); }

Contributors

PersonTokensPropCommitsCommitProp
Pablo Neira Ayuso1356.52%125.00%
Florian Westphal521.74%125.00%
Jan Engelhardt521.74%250.00%
Total23100.00%4100.00%

static struct xt_match state_mt_reg __read_mostly = { .name = "state", .family = NFPROTO_UNSPEC, .checkentry = state_mt_check, .match = state_mt, .destroy = state_mt_destroy, .matchsize = sizeof(struct xt_state_info), .me = THIS_MODULE, };
static int __init state_mt_init(void) { return xt_register_match(&state_mt_reg); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)1062.50%120.00%
Jan Engelhardt425.00%240.00%
Harald Welte16.25%120.00%
Patrick McHardy16.25%120.00%
Total16100.00%5100.00%


static void __exit state_mt_exit(void) { xt_unregister_match(&state_mt_reg); }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)853.33%120.00%
Jan Engelhardt426.67%240.00%
Harald Welte213.33%120.00%
Patrick McHardy16.67%120.00%
Total15100.00%5100.00%

module_init(state_mt_init); module_exit(state_mt_exit);

Overall Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds (pre-git)9232.06%14.35%
Harald Welte5920.56%417.39%
Jan Engelhardt4616.03%1043.48%
Pablo Neira Ayuso4214.63%14.35%
Eric Dumazet217.32%14.35%
Patrick McHardy155.23%417.39%
Florian Westphal103.48%14.35%
Yasuyuki Kozakai20.70%14.35%
Total287100.00%23100.00%
Directory: net/netfilter
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with cregit.