summaryrefslogtreecommitdiffstats
path: root/kernel/linux2.5
diff options
context:
space:
mode:
authorBart De Schuymer <bdschuym@pandora.be>2002-09-10 17:46:06 +0000
committerBart De Schuymer <bdschuym@pandora.be>2002-09-10 17:46:06 +0000
commit8853618a904800e68fc33b5285249ed8bbac7819 (patch)
tree2fa417c4f933a3a36d742f6ccc3ef402642ae702 /kernel/linux2.5
parentd3aaf373c5c7812a0afab3e7c095e6e1d975b0a4 (diff)
prevent bogus NETFILTER_DEBUG messages
Diffstat (limited to 'kernel/linux2.5')
-rw-r--r--kernel/linux2.5/net/bridge/br_forward.c151
1 files changed, 151 insertions, 0 deletions
diff --git a/kernel/linux2.5/net/bridge/br_forward.c b/kernel/linux2.5/net/bridge/br_forward.c
new file mode 100644
index 0000000..d391a4b
--- /dev/null
+++ b/kernel/linux2.5/net/bridge/br_forward.c
@@ -0,0 +1,151 @@
+/*
+ * Forwarding decision
+ * Linux ethernet bridge
+ *
+ * Authors:
+ * Lennert Buytenhek <buytenh@gnu.org>
+ *
+ * $Id: br_forward.c,v 1.1 2002/09/10 17:46:06 bdschuym Exp $
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/skbuff.h>
+#include <linux/if_bridge.h>
+#include <linux/netfilter_bridge.h>
+#include "br_private.h"
+
+static inline int should_deliver(struct net_bridge_port *p, struct sk_buff *skb)
+{
+ if (skb->dev == p->dev ||
+ p->state != BR_STATE_FORWARDING)
+ return 0;
+
+ return 1;
+}
+
+static int __dev_queue_push_xmit(struct sk_buff *skb)
+{
+ skb_push(skb, ETH_HLEN);
+ dev_queue_xmit(skb);
+
+ return 0;
+}
+
+static int __br_forward_finish(struct sk_buff *skb)
+{
+ NF_HOOK(PF_BRIDGE, NF_BR_POST_ROUTING, skb, NULL, skb->dev,
+ __dev_queue_push_xmit);
+
+ return 0;
+}
+
+static void __br_deliver(struct net_bridge_port *to, struct sk_buff *skb)
+{
+ skb->dev = to->dev;
+#ifdef CONFIG_NETFILTER_DEBUG
+ skb->nf_debug = 0;
+#endif
+ NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
+ __br_forward_finish);
+}
+
+static void __br_forward(struct net_bridge_port *to, struct sk_buff *skb)
+{
+ struct net_device *indev;
+
+ indev = skb->dev;
+ skb->dev = to->dev;
+
+ NF_HOOK(PF_BRIDGE, NF_BR_FORWARD, skb, indev, skb->dev,
+ __br_forward_finish);
+}
+
+/* called under bridge lock */
+void br_deliver(struct net_bridge_port *to, struct sk_buff *skb)
+{
+ if (should_deliver(to, skb)) {
+ __br_deliver(to, skb);
+ return;
+ }
+
+ kfree_skb(skb);
+}
+
+/* called under bridge lock */
+void br_forward(struct net_bridge_port *to, struct sk_buff *skb)
+{
+ if (should_deliver(to, skb)) {
+ __br_forward(to, skb);
+ return;
+ }
+
+ kfree_skb(skb);
+}
+
+/* called under bridge lock */
+static void br_flood(struct net_bridge *br, struct sk_buff *skb, int clone,
+ void (*__packet_hook)(struct net_bridge_port *p, struct sk_buff *skb))
+{
+ struct net_bridge_port *p;
+ struct net_bridge_port *prev;
+
+ if (clone) {
+ struct sk_buff *skb2;
+
+ if ((skb2 = skb_clone(skb, GFP_ATOMIC)) == NULL) {
+ br->statistics.tx_dropped++;
+ return;
+ }
+
+ skb = skb2;
+ }
+
+ prev = NULL;
+
+ p = br->port_list;
+ while (p != NULL) {
+ if (should_deliver(p, skb)) {
+ if (prev != NULL) {
+ struct sk_buff *skb2;
+
+ if ((skb2 = skb_clone(skb, GFP_ATOMIC)) == NULL) {
+ br->statistics.tx_dropped++;
+ kfree_skb(skb);
+ return;
+ }
+
+ __packet_hook(prev, skb2);
+ }
+
+ prev = p;
+ }
+
+ p = p->next;
+ }
+
+ if (prev != NULL) {
+ __packet_hook(prev, skb);
+ return;
+ }
+
+ kfree_skb(skb);
+}
+
+/* called under bridge lock */
+void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb, int clone)
+{
+ br_flood(br, skb, clone, __br_deliver);
+}
+
+/* called under bridge lock */
+void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, int clone)
+{
+ br_flood(br, skb, clone, __br_forward);
+}