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- // SPDX-License-Identifier: GPL-2.0-only
- /*
- * (C) 2014 by Pablo Neira Ayuso <pablo@netfilter.org>
- */
- #include <linux/module.h>
- #include <linux/spinlock.h>
- #include <linux/skbuff.h>
- #include <linux/if_bridge.h>
- #include <linux/ip.h>
- #include <net/route.h>
- #include <linux/netfilter.h>
- #include <net/netfilter/nf_log.h>
- static void nf_log_bridge_packet(struct net *net, u_int8_t pf,
- unsigned int hooknum,
- const struct sk_buff *skb,
- const struct net_device *in,
- const struct net_device *out,
- const struct nf_loginfo *loginfo,
- const char *prefix)
- {
- nf_log_l2packet(net, pf, eth_hdr(skb)->h_proto, hooknum, skb,
- in, out, loginfo, prefix);
- }
- static struct nf_logger nf_bridge_logger __read_mostly = {
- .name = "nf_log_bridge",
- .type = NF_LOG_TYPE_LOG,
- .logfn = nf_log_bridge_packet,
- .me = THIS_MODULE,
- };
- static int __net_init nf_log_bridge_net_init(struct net *net)
- {
- return nf_log_set(net, NFPROTO_BRIDGE, &nf_bridge_logger);
- }
- static void __net_exit nf_log_bridge_net_exit(struct net *net)
- {
- nf_log_unset(net, &nf_bridge_logger);
- }
- static struct pernet_operations nf_log_bridge_net_ops = {
- .init = nf_log_bridge_net_init,
- .exit = nf_log_bridge_net_exit,
- };
- static int __init nf_log_bridge_init(void)
- {
- int ret;
- /* Request to load the real packet loggers. */
- nf_logger_request_module(NFPROTO_IPV4, NF_LOG_TYPE_LOG);
- nf_logger_request_module(NFPROTO_IPV6, NF_LOG_TYPE_LOG);
- nf_logger_request_module(NFPROTO_ARP, NF_LOG_TYPE_LOG);
- ret = register_pernet_subsys(&nf_log_bridge_net_ops);
- if (ret < 0)
- return ret;
- nf_log_register(NFPROTO_BRIDGE, &nf_bridge_logger);
- return 0;
- }
- static void __exit nf_log_bridge_exit(void)
- {
- unregister_pernet_subsys(&nf_log_bridge_net_ops);
- nf_log_unregister(&nf_bridge_logger);
- }
- module_init(nf_log_bridge_init);
- module_exit(nf_log_bridge_exit);
- MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>");
- MODULE_DESCRIPTION("Netfilter bridge packet logging");
- MODULE_LICENSE("GPL");
- MODULE_ALIAS_NF_LOGGER(AF_BRIDGE, 0);
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