projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1fddf4ba PNA |
1 | /* |
| 2 | * (C) 2016 by Pablo Neira Ayuso <[email protected]> | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License version 2 as | |
| 6 | * published by the Free Software Foundation. | |
| 7 | */ | |
| 8 | ||
| 9 | #include <linux/module.h> | |
| 10 | #include <linux/spinlock.h> | |
| 11 | #include <linux/skbuff.h> | |
| 12 | #include <linux/ip.h> | |
| 13 | #include <net/route.h> | |
| 14 | ||
| 15 | #include <linux/netfilter.h> | |
| 16 | #include <net/netfilter/nf_log.h> | |
| 17 | ||
| 18 | static void nf_log_netdev_packet(struct net *net, u_int8_t pf, | |
| 19 | unsigned int hooknum, | |
| 20 | const struct sk_buff *skb, | |
| 21 | const struct net_device *in, | |
| 22 | const struct net_device *out, | |
| 23 | const struct nf_loginfo *loginfo, | |
| 24 | const char *prefix) | |
| 25 | { | |
| 673ab46f LZ |
26 | nf_log_l2packet(net, pf, skb->protocol, hooknum, skb, in, out, |
| 27 | loginfo, prefix); | |
| 1fddf4ba PNA |
28 | } |
| 29 | ||
| 30 | static struct nf_logger nf_netdev_logger __read_mostly = { | |
| 31 | .name = "nf_log_netdev", | |
| 32 | .type = NF_LOG_TYPE_LOG, | |
| 33 | .logfn = nf_log_netdev_packet, | |
| 34 | .me = THIS_MODULE, | |
| 35 | }; | |
| 36 | ||
| 37 | static int __net_init nf_log_netdev_net_init(struct net *net) | |
| 38 | { | |
| 39 | return nf_log_set(net, NFPROTO_NETDEV, &nf_netdev_logger); | |
| 40 | } | |
| 41 | ||
| 42 | static void __net_exit nf_log_netdev_net_exit(struct net *net) | |
| 43 | { | |
| 44 | nf_log_unset(net, &nf_netdev_logger); | |
| 45 | } | |
| 46 | ||
| 47 | static struct pernet_operations nf_log_netdev_net_ops = { | |
| 48 | .init = nf_log_netdev_net_init, | |
| 49 | .exit = nf_log_netdev_net_exit, | |
| 50 | }; | |
| 51 | ||
| 52 | static int __init nf_log_netdev_init(void) | |
| 53 | { | |
| 54 | int ret; | |
| 55 | ||
| 56 | /* Request to load the real packet loggers. */ | |
| 57 | nf_logger_request_module(NFPROTO_IPV4, NF_LOG_TYPE_LOG); | |
| 58 | nf_logger_request_module(NFPROTO_IPV6, NF_LOG_TYPE_LOG); | |
| 59 | nf_logger_request_module(NFPROTO_ARP, NF_LOG_TYPE_LOG); | |
| 60 | ||
| 61 | ret = register_pernet_subsys(&nf_log_netdev_net_ops); | |
| 62 | if (ret < 0) | |
| 63 | return ret; | |
| 64 | ||
| 65 | nf_log_register(NFPROTO_NETDEV, &nf_netdev_logger); | |
| 66 | return 0; | |
| 67 | } | |
| 68 | ||
| 69 | static void __exit nf_log_netdev_exit(void) | |
| 70 | { | |
| 71 | unregister_pernet_subsys(&nf_log_netdev_net_ops); | |
| 72 | nf_log_unregister(&nf_netdev_logger); | |
| 73 | } | |
| 74 | ||
| 75 | module_init(nf_log_netdev_init); | |
| 76 | module_exit(nf_log_netdev_exit); | |
| 77 | ||
| 78 | MODULE_AUTHOR("Pablo Neira Ayuso <[email protected]>"); | |
| 79 | MODULE_DESCRIPTION("Netfilter netdev packet logging"); | |
| 80 | MODULE_LICENSE("GPL"); | |
| 81 | MODULE_ALIAS_NF_LOGGER(5, 0); /* NFPROTO_NETDEV */ |