Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / net / netfilter / xt_NFLOG.c

diff --git a/kernel/net/netfilter/xt_NFLOG.c b/kernel/net/netfilter/xt_NFLOG.c
new file mode 100644 (file)
index 0000000..fb7497c
--- /dev/null
+++ b/kernel/net/netfilter/xt_NFLOG.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2006 Patrick McHardy <kaber@trash.net>
+ *
+ * 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/init.h>
+#include <linux/skbuff.h>
+
+#include <linux/netfilter/x_tables.h>
+#include <linux/netfilter/xt_NFLOG.h>
+#include <net/netfilter/nf_log.h>
+#include <net/netfilter/nfnetlink_log.h>
+
+MODULE_AUTHOR("Patrick McHardy <kaber@trash.net>");
+MODULE_DESCRIPTION("Xtables: packet logging to netlink using NFLOG");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("ipt_NFLOG");
+MODULE_ALIAS("ip6t_NFLOG");
+
+static unsigned int
+nflog_tg(struct sk_buff *skb, const struct xt_action_param *par)
+{
+       const struct xt_nflog_info *info = par->targinfo;
+       struct nf_loginfo li;
+       struct net *net = dev_net(par->in ? par->in : par->out);
+
+       li.type              = NF_LOG_TYPE_ULOG;
+       li.u.ulog.copy_len   = info->len;
+       li.u.ulog.group      = info->group;
+       li.u.ulog.qthreshold = info->threshold;
+
+       nfulnl_log_packet(net, par->family, par->hooknum, skb, par->in,
+                         par->out, &li, info->prefix);
+       return XT_CONTINUE;
+}
+
+static int nflog_tg_check(const struct xt_tgchk_param *par)
+{
+       const struct xt_nflog_info *info = par->targinfo;
+
+       if (info->flags & ~XT_NFLOG_MASK)
+               return -EINVAL;
+       if (info->prefix[sizeof(info->prefix) - 1] != '\0')
+               return -EINVAL;
+       return 0;
+}
+
+static struct xt_target nflog_tg_reg __read_mostly = {
+       .name       = "NFLOG",
+       .revision   = 0,
+       .family     = NFPROTO_UNSPEC,
+       .checkentry = nflog_tg_check,
+       .target     = nflog_tg,
+       .targetsize = sizeof(struct xt_nflog_info),
+       .me         = THIS_MODULE,
+};
+
+static int __init nflog_tg_init(void)
+{
+       return xt_register_target(&nflog_tg_reg);
+}
+
+static void __exit nflog_tg_exit(void)
+{
+       xt_unregister_target(&nflog_tg_reg);
+}
+
+module_init(nflog_tg_init);
+module_exit(nflog_tg_exit);