Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/net/ipv4/netfilter/ipt_mac.c b/net/ipv4/netfilter/ipt_mac.c
new file mode 100644
index 0000000..11a459e
--- /dev/null
+++ b/net/ipv4/netfilter/ipt_mac.c
@@ -0,0 +1,79 @@
+/* Kernel module to match MAC address parameters. */
+
+/* (C) 1999-2001 Paul `Rusty' Russell
+ * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
+ *
+ * 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/netfilter_ipv4/ipt_mac.h>
+#include <linux/netfilter_ipv4/ip_tables.h>
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Netfilter Core Team <coreteam@netfilter.org>");
+MODULE_DESCRIPTION("iptables mac matching module");
+
+static int
+match(const struct sk_buff *skb,
+ const struct net_device *in,
+ const struct net_device *out,
+ const void *matchinfo,
+ int offset,
+ int *hotdrop)
+{
+ const struct ipt_mac_info *info = matchinfo;
+
+ /* Is mac pointer valid? */
+ return (skb->mac.raw >= skb->head
+ && (skb->mac.raw + ETH_HLEN) <= skb->data
+ /* If so, compare... */
+ && ((memcmp(eth_hdr(skb)->h_source, info->srcaddr, ETH_ALEN)
+ == 0) ^ info->invert));
+}
+
+static int
+ipt_mac_checkentry(const char *tablename,
+ const struct ipt_ip *ip,
+ void *matchinfo,
+ unsigned int matchsize,
+ unsigned int hook_mask)
+{
+ /* FORWARD isn't always valid, but it's nice to be able to do --RR */
+ if (hook_mask
+ & ~((1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_IN)
+ | (1 << NF_IP_FORWARD))) {
+ printk("ipt_mac: only valid for PRE_ROUTING, LOCAL_IN or FORWARD.\n");
+ return 0;
+ }
+
+ if (matchsize != IPT_ALIGN(sizeof(struct ipt_mac_info)))
+ return 0;
+
+ return 1;
+}
+
+static struct ipt_match mac_match = {
+ .name = "mac",
+ .match = &match,
+ .checkentry = &ipt_mac_checkentry,
+ .me = THIS_MODULE,
+};
+
+static int __init init(void)
+{
+ return ipt_register_match(&mac_match);
+}
+
+static void __exit fini(void)
+{
+ ipt_unregister_match(&mac_match);
+}
+
+module_init(init);
+module_exit(fini);