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-rw-r--r--net/bridge/br_forward.c3
-rw-r--r--net/bridge/br_if.c1
-rw-r--r--net/bridge/br_private.h3
-rw-r--r--net/bridge/br_sysfs_if.c17
4 files changed, 23 insertions, 1 deletions
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index d2c27c8..bc1704a 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -22,7 +22,8 @@
static inline int should_deliver(const struct net_bridge_port *p,
const struct sk_buff *skb)
{
- return (skb->dev != p->dev && p->state == BR_STATE_FORWARDING);
+ return (((p->flags & BR_HAIRPIN_MODE) || skb->dev != p->dev) &&
+ p->state == BR_STATE_FORWARDING);
}
static inline unsigned packet_length(const struct sk_buff *skb)
diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index eb404dc..e486f1f 100644
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -256,6 +256,7 @@ static struct net_bridge_port *new_nbp(struct net_bridge *br,
p->path_cost = port_cost(dev);
p->priority = 0x8000 >> BR_PORT_BITS;
p->port_no = index;
+ p->flags = 0;
br_init_port(p);
p->state = BR_STATE_DISABLED;
br_stp_port_timer_init(p);
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index d5b5537..8319247 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -81,6 +81,9 @@ struct net_bridge_port
struct timer_list message_age_timer;
struct kobject kobj;
struct rcu_head rcu;
+
+ unsigned long flags;
+#define BR_HAIRPIN_MODE 0x00000001
};
struct net_bridge
diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c
index 4a3cdf8..820643a 100644
--- a/net/bridge/br_sysfs_if.c
+++ b/net/bridge/br_sysfs_if.c
@@ -143,6 +143,22 @@ static ssize_t store_flush(struct net_bridge_port *p, unsigned long v)
}
static BRPORT_ATTR(flush, S_IWUSR, NULL, store_flush);
+static ssize_t show_hairpin_mode(struct net_bridge_port *p, char *buf)
+{
+ int hairpin_mode = (p->flags & BR_HAIRPIN_MODE) ? 1 : 0;
+ return sprintf(buf, "%d\n", hairpin_mode);
+}
+static ssize_t store_hairpin_mode(struct net_bridge_port *p, unsigned long v)
+{
+ if (v)
+ p->flags |= BR_HAIRPIN_MODE;
+ else
+ p->flags &= ~BR_HAIRPIN_MODE;
+ return 0;
+}
+static BRPORT_ATTR(hairpin_mode, S_IRUGO | S_IWUSR,
+ show_hairpin_mode, store_hairpin_mode);
+
static struct brport_attribute *brport_attrs[] = {
&brport_attr_path_cost,
&brport_attr_priority,
@@ -159,6 +175,7 @@ static struct brport_attribute *brport_attrs[] = {
&brport_attr_forward_delay_timer,
&brport_attr_hold_timer,
&brport_attr_flush,
+ &brport_attr_hairpin_mode,
NULL
};