cregit-Linux how code gets into the kernel

Release 4.8 net/netfilter/xt_pkttype.c

Directory: net/netfilter
/* (C) 1999-2001 Michal Ludvig <michal@logix.cz>
 *
 * 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/if_ether.h>
#include <linux/if_packet.h>
#include <linux/in.h>
#include <linux/ip.h>
#include <linux/ipv6.h>

#include <linux/netfilter/xt_pkttype.h>
#include <linux/netfilter/x_tables.h>

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Michal Ludvig <michal@logix.cz>");
MODULE_DESCRIPTION("Xtables: link layer packet type match");
MODULE_ALIAS("ipt_pkttype");
MODULE_ALIAS("ip6t_pkttype");


static bool pkttype_mt(const struct sk_buff *skb, struct xt_action_param *par) { const struct xt_pkttype_info *info = par->matchinfo; u_int8_t type; if (skb->pkt_type != PACKET_LOOPBACK) type = skb->pkt_type; else if (par->family == NFPROTO_IPV4 && ipv4_is_multicast(ip_hdr(skb)->daddr)) type = PACKET_MULTICAST; else if (par->family == NFPROTO_IPV6 && ipv6_hdr(skb)->daddr.s6_addr[0] == 0xFF) type = PACKET_MULTICAST; else type = PACKET_BROADCAST; return (type == info->pkttype) ^ info->invert; }

Contributors

PersonTokensPropCommitsCommitProp
jan engelhardtjan engelhardt5448.21%758.33%
harald welteharald welte3127.68%216.67%
phil oesterphil oester2320.54%18.33%
arnaldo carvalho de meloarnaldo carvalho de melo32.68%18.33%
joe perchesjoe perches10.89%18.33%
Total112100.00%12100.00%

static struct xt_match pkttype_mt_reg __read_mostly = { .name = "pkttype", .revision = 0, .family = NFPROTO_UNSPEC, .match = pkttype_mt, .matchsize = sizeof(struct xt_pkttype_info), .me = THIS_MODULE, };
static int __init pkttype_mt_init(void) { return xt_register_match(&pkttype_mt_reg); }

Contributors

PersonTokensPropCommitsCommitProp
harald welteharald welte1168.75%240.00%
jan engelhardtjan engelhardt425.00%240.00%
patrick mchardypatrick mchardy16.25%120.00%
Total16100.00%5100.00%


static void __exit pkttype_mt_exit(void) { xt_unregister_match(&pkttype_mt_reg); }

Contributors

PersonTokensPropCommitsCommitProp
harald welteharald welte1173.33%250.00%
jan engelhardtjan engelhardt426.67%250.00%
Total15100.00%4100.00%

module_init(pkttype_mt_init); module_exit(pkttype_mt_exit);

Overall Contributors

PersonTokensPropCommitsCommitProp
harald welteharald welte12650.81%315.79%
jan engelhardtjan engelhardt7329.44%947.37%
phil oesterphil oester2911.69%15.26%
patrick mchardypatrick mchardy124.84%315.79%
art haasart haas41.61%15.26%
arnaldo carvalho de meloarnaldo carvalho de melo31.21%15.26%
joe perchesjoe perches10.40%15.26%
Total248100.00%19100.00%
Directory: net/netfilter
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.