[NETFILTER]: Rename ipt_iprange to xt_iprange
This patch moves ipt_iprange to xt_iprange, in preparation for adding
IPv6 support to xt_iprange.
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/netfilter/xt_iprange.c b/net/netfilter/xt_iprange.c
new file mode 100644
index 0000000..c57a6cf
--- /dev/null
+++ b/net/netfilter/xt_iprange.c
@@ -0,0 +1,76 @@
+/*
+ * xt_iprange - Netfilter module to match IP address ranges
+ *
+ * (C) 2003 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
+ *
+ * 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/ip.h>
+#include <linux/netfilter/x_tables.h>
+#include <linux/netfilter_ipv4/ipt_iprange.h>
+
+static bool
+iprange_mt_v0(const struct sk_buff *skb, const struct net_device *in,
+ const struct net_device *out, const struct xt_match *match,
+ const void *matchinfo, int offset, unsigned int protoff,
+ bool *hotdrop)
+{
+ const struct ipt_iprange_info *info = matchinfo;
+ const struct iphdr *iph = ip_hdr(skb);
+
+ if (info->flags & IPRANGE_SRC) {
+ if ((ntohl(iph->saddr) < ntohl(info->src.min_ip)
+ || ntohl(iph->saddr) > ntohl(info->src.max_ip))
+ ^ !!(info->flags & IPRANGE_SRC_INV)) {
+ pr_debug("src IP %u.%u.%u.%u NOT in range %s"
+ "%u.%u.%u.%u-%u.%u.%u.%u\n",
+ NIPQUAD(iph->saddr),
+ info->flags & IPRANGE_SRC_INV ? "(INV) " : "",
+ NIPQUAD(info->src.min_ip),
+ NIPQUAD(info->src.max_ip));
+ return false;
+ }
+ }
+ if (info->flags & IPRANGE_DST) {
+ if ((ntohl(iph->daddr) < ntohl(info->dst.min_ip)
+ || ntohl(iph->daddr) > ntohl(info->dst.max_ip))
+ ^ !!(info->flags & IPRANGE_DST_INV)) {
+ pr_debug("dst IP %u.%u.%u.%u NOT in range %s"
+ "%u.%u.%u.%u-%u.%u.%u.%u\n",
+ NIPQUAD(iph->daddr),
+ info->flags & IPRANGE_DST_INV ? "(INV) " : "",
+ NIPQUAD(info->dst.min_ip),
+ NIPQUAD(info->dst.max_ip));
+ return false;
+ }
+ }
+ return true;
+}
+
+static struct xt_match iprange_mt_reg __read_mostly = {
+ .name = "iprange",
+ .family = AF_INET,
+ .match = iprange_mt_v0,
+ .matchsize = sizeof(struct ipt_iprange_info),
+ .me = THIS_MODULE
+};
+
+static int __init iprange_mt_init(void)
+{
+ return xt_register_match(&iprange_mt_reg);
+}
+
+static void __exit iprange_mt_exit(void)
+{
+ xt_unregister_match(&iprange_mt_reg);
+}
+
+module_init(iprange_mt_init);
+module_exit(iprange_mt_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
+MODULE_DESCRIPTION("Xtables: arbitrary IPv4 range matching");
