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authorBart De Schuymer <bdschuym@pandora.be>2002-09-16 20:02:51 +0000
committerBart De Schuymer <bdschuym@pandora.be>2002-09-16 20:02:51 +0000
commite5ed21681d65767a0bfdbb30e92d6c40fdca8ea6 (patch)
tree7d971fe7893bebc62c5e0e3c53ead74b5e5696bb /kernel/linux2.5/net/bridge/netfilter/ebt_redirect.c
parent20c2d493985a28abbec31f908d0b2c03ada4c45e (diff)
*** empty log message ***
Diffstat (limited to 'kernel/linux2.5/net/bridge/netfilter/ebt_redirect.c')
-rw-r--r--kernel/linux2.5/net/bridge/netfilter/ebt_redirect.c70
1 files changed, 70 insertions, 0 deletions
diff --git a/kernel/linux2.5/net/bridge/netfilter/ebt_redirect.c b/kernel/linux2.5/net/bridge/netfilter/ebt_redirect.c
new file mode 100644
index 0000000..c8ed4cb
--- /dev/null
+++ b/kernel/linux2.5/net/bridge/netfilter/ebt_redirect.c
@@ -0,0 +1,70 @@
+/*
+ * ebt_redirect
+ *
+ * Authors:
+ * Bart De Schuymer <bart.de.schuymer@pandora.be>
+ *
+ * April, 2002
+ *
+ */
+
+#include <linux/netfilter_bridge/ebtables.h>
+#include <linux/netfilter_bridge/ebt_redirect.h>
+#include <linux/module.h>
+#include <net/sock.h>
+#include "../br_private.h"
+
+static int ebt_target_redirect(struct sk_buff **pskb, unsigned int hooknr,
+ const struct net_device *in, const struct net_device *out,
+ const void *data, unsigned int datalen)
+{
+ struct ebt_redirect_info *info = (struct ebt_redirect_info *)data;
+
+ if (hooknr != NF_BR_BROUTING)
+ memcpy((**pskb).mac.ethernet->h_dest,
+ in->br_port->br->dev.dev_addr, ETH_ALEN);
+ else {
+ memcpy((**pskb).mac.ethernet->h_dest,
+ in->dev_addr, ETH_ALEN);
+ (*pskb)->pkt_type = PACKET_HOST;
+ }
+ return info->target;
+}
+
+static int ebt_target_redirect_check(const char *tablename, unsigned int hookmask,
+ const struct ebt_entry *e, void *data, unsigned int datalen)
+{
+ struct ebt_redirect_info *info = (struct ebt_redirect_info *)data;
+
+ if (datalen != sizeof(struct ebt_redirect_info))
+ return -EINVAL;
+ if (BASE_CHAIN && info->target == EBT_RETURN)
+ return -EINVAL;
+ CLEAR_BASE_CHAIN_BIT;
+ if ( (strcmp(tablename, "nat") || hookmask & ~(1 << NF_BR_PRE_ROUTING)) &&
+ (strcmp(tablename, "broute") || hookmask & ~(1 << NF_BR_BROUTING)) )
+ return -EINVAL;
+ if (INVALID_TARGET)
+ return -EINVAL;
+ return 0;
+}
+
+static struct ebt_target redirect_target =
+{
+ {NULL, NULL}, EBT_REDIRECT_TARGET, ebt_target_redirect,
+ ebt_target_redirect_check, NULL, THIS_MODULE
+};
+
+static int __init init(void)
+{
+ return ebt_register_target(&redirect_target);
+}
+
+static void __exit fini(void)
+{
+ ebt_unregister_target(&redirect_target);
+}
+
+module_init(init);
+module_exit(fini);
+MODULE_LICENSE("GPL");