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Diffstat (limited to 'target/linux/generic/patches-3.8/642-bridge_port_isolate.patch')
-rw-r--r--target/linux/generic/patches-3.8/642-bridge_port_isolate.patch103
1 files changed, 103 insertions, 0 deletions
diff --git a/target/linux/generic/patches-3.8/642-bridge_port_isolate.patch b/target/linux/generic/patches-3.8/642-bridge_port_isolate.patch
new file mode 100644
index 0000000000..395dd955ea
--- /dev/null
+++ b/target/linux/generic/patches-3.8/642-bridge_port_isolate.patch
@@ -0,0 +1,103 @@
+--- a/net/bridge/br_private.h
++++ b/net/bridge/br_private.h
+@@ -139,6 +139,7 @@ struct net_bridge_port
+ #define BR_BPDU_GUARD 0x00000002
+ #define BR_ROOT_BLOCK 0x00000004
+ #define BR_MULTICAST_FAST_LEAVE 0x00000008
++#define BR_ISOLATE_MODE 0x00000010
+
+ #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+ u32 multicast_startup_queries_sent;
+--- a/net/bridge/br_sysfs_if.c
++++ b/net/bridge/br_sysfs_if.c
+@@ -159,6 +159,22 @@ BRPORT_ATTR_FLAG(hairpin_mode, BR_HAIRPI
+ BRPORT_ATTR_FLAG(bpdu_guard, BR_BPDU_GUARD);
+ BRPORT_ATTR_FLAG(root_block, BR_ROOT_BLOCK);
+
++static ssize_t show_isolate_mode(struct net_bridge_port *p, char *buf)
++{
++ int isolate_mode = (p->flags & BR_ISOLATE_MODE) ? 1 : 0;
++ return sprintf(buf, "%d\n", isolate_mode);
++}
++static ssize_t store_isolate_mode(struct net_bridge_port *p, unsigned long v)
++{
++ if (v)
++ p->flags |= BR_ISOLATE_MODE;
++ else
++ p->flags &= ~BR_ISOLATE_MODE;
++ return 0;
++}
++static BRPORT_ATTR(isolate_mode, S_IRUGO | S_IWUSR,
++ show_isolate_mode, store_isolate_mode);
++
+ #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
+ static ssize_t show_multicast_router(struct net_bridge_port *p, char *buf)
+ {
+@@ -199,6 +215,7 @@ static const struct brport_attribute *br
+ &brport_attr_multicast_router,
+ &brport_attr_multicast_fast_leave,
+ #endif
++ &brport_attr_isolate_mode,
+ NULL
+ };
+
+--- a/net/bridge/br_input.c
++++ b/net/bridge/br_input.c
+@@ -95,7 +95,8 @@ int br_handle_frame_finish(struct sk_buf
+ skb2 = skb;
+
+ br->dev->stats.multicast++;
+- } else if ((dst = __br_fdb_get(br, dest)) && dst->is_local) {
++ } else if ((p->flags & BR_ISOLATE_MODE) ||
++ ((dst = __br_fdb_get(br, dest)) && dst->is_local)) {
+ skb2 = skb;
+ /* Do not forward the packet since it's local. */
+ skb = NULL;
+--- a/net/bridge/br_forward.c
++++ b/net/bridge/br_forward.c
+@@ -110,7 +110,7 @@ void br_deliver(const struct net_bridge_
+ /* called with rcu_read_lock */
+ void br_forward(const struct net_bridge_port *to, struct sk_buff *skb, struct sk_buff *skb0)
+ {
+- if (should_deliver(to, skb)) {
++ if (should_deliver(to, skb) && !(to->flags & BR_ISOLATE_MODE)) {
+ if (skb0)
+ deliver_clone(to, skb, __br_forward);
+ else
+@@ -165,7 +165,8 @@ out:
+ static void br_flood(struct net_bridge *br, struct sk_buff *skb,
+ struct sk_buff *skb0,
+ void (*__packet_hook)(const struct net_bridge_port *p,
+- struct sk_buff *skb))
++ struct sk_buff *skb),
++ bool forward)
+ {
+ struct net_bridge_port *p;
+ struct net_bridge_port *prev;
+@@ -173,6 +174,9 @@ static void br_flood(struct net_bridge *
+ prev = NULL;
+
+ list_for_each_entry_rcu(p, &br->port_list, list) {
++ if (forward && (p->flags & BR_ISOLATE_MODE))
++ continue;
++
+ prev = maybe_deliver(prev, p, skb, __packet_hook);
+ if (IS_ERR(prev))
+ goto out;
+@@ -196,14 +200,14 @@ out:
+ /* called with rcu_read_lock */
+ void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb)
+ {
+- br_flood(br, skb, NULL, __br_deliver);
++ br_flood(br, skb, NULL, __br_deliver, false);
+ }
+
+ /* called under bridge lock */
+ void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
+ struct sk_buff *skb2)
+ {
+- br_flood(br, skb, skb2, __br_forward);
++ br_flood(br, skb, skb2, __br_forward, true);
+ }
+
+ #ifdef CONFIG_BRIDGE_IGMP_SNOOPING