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path: root/net/bridge/br_forward.c
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Diffstat (limited to 'net/bridge/br_forward.c')
-rw-r--r--net/bridge/br_forward.c51
1 files changed, 35 insertions, 16 deletions
diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index 7a241c396981..a98ef1393097 100644
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -15,6 +15,7 @@
#include <linux/slab.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
+#include <linux/netpoll.h>
#include <linux/skbuff.h>
#include <linux/if_vlan.h>
#include <linux/netfilter_bridge.h>
@@ -44,13 +45,19 @@ int br_dev_queue_push_xmit(struct sk_buff *skb)
if (packet_length(skb) > skb->dev->mtu && !skb_is_gso(skb))
kfree_skb(skb);
else {
- /* ip_refrag calls ip_fragment, doesn't copy the MAC header. */
+ /* ip_fragment doesn't copy the MAC header */
if (nf_bridge_maybe_copy_header(skb))
kfree_skb(skb);
else {
skb_push(skb, ETH_HLEN);
- dev_queue_xmit(skb);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ if (unlikely(skb->dev->priv_flags & IFF_IN_NETPOLL)) {
+ netpoll_send_skb(skb->dev->npinfo->netpoll, skb);
+ skb->dev->priv_flags &= ~IFF_IN_NETPOLL;
+ } else
+#endif
+ dev_queue_xmit(skb);
}
}
@@ -59,16 +66,30 @@ int br_dev_queue_push_xmit(struct sk_buff *skb)
int br_forward_finish(struct sk_buff *skb)
{
- return NF_HOOK(PF_BRIDGE, NF_BR_POST_ROUTING, skb, NULL, skb->dev,
+ return NF_HOOK(NFPROTO_BRIDGE, NF_BR_POST_ROUTING, skb, NULL, skb->dev,
br_dev_queue_push_xmit);
}
static void __br_deliver(const struct net_bridge_port *to, struct sk_buff *skb)
{
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ struct net_bridge *br = to->br;
+ if (unlikely(br->dev->priv_flags & IFF_IN_NETPOLL)) {
+ struct netpoll *np;
+ to->dev->npinfo = skb->dev->npinfo;
+ np = skb->dev->npinfo->netpoll;
+ np->real_dev = np->dev = to->dev;
+ to->dev->priv_flags |= IFF_IN_NETPOLL;
+ }
+#endif
skb->dev = to->dev;
- NF_HOOK(PF_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
- br_forward_finish);
+ NF_HOOK(NFPROTO_BRIDGE, NF_BR_LOCAL_OUT, skb, NULL, skb->dev,
+ br_forward_finish);
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ if (skb->dev->npinfo)
+ skb->dev->npinfo->netpoll->dev = br->dev;
+#endif
}
static void __br_forward(const struct net_bridge_port *to, struct sk_buff *skb)
@@ -84,8 +105,8 @@ static void __br_forward(const struct net_bridge_port *to, struct sk_buff *skb)
skb->dev = to->dev;
skb_forward_csum(skb);
- NF_HOOK(PF_BRIDGE, NF_BR_FORWARD, skb, indev, skb->dev,
- br_forward_finish);
+ NF_HOOK(NFPROTO_BRIDGE, NF_BR_FORWARD, skb, indev, skb->dev,
+ br_forward_finish);
}
/* called with rcu_read_lock */
@@ -208,17 +229,15 @@ static void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
{
struct net_device *dev = BR_INPUT_SKB_CB(skb)->brdev;
struct net_bridge *br = netdev_priv(dev);
- struct net_bridge_port *port;
- struct net_bridge_port *lport, *rport;
- struct net_bridge_port *prev;
+ struct net_bridge_port *prev = NULL;
struct net_bridge_port_group *p;
struct hlist_node *rp;
- prev = NULL;
-
- rp = br->router_list.first;
- p = mdst ? mdst->ports : NULL;
+ rp = rcu_dereference(br->router_list.first);
+ p = mdst ? rcu_dereference(mdst->ports) : NULL;
while (p || rp) {
+ struct net_bridge_port *port, *lport, *rport;
+
lport = p ? p->port : NULL;
rport = rp ? hlist_entry(rp, struct net_bridge_port, rlist) :
NULL;
@@ -231,9 +250,9 @@ static void br_multicast_flood(struct net_bridge_mdb_entry *mdst,
goto out;
if ((unsigned long)lport >= (unsigned long)port)
- p = p->next;
+ p = rcu_dereference(p->next);
if ((unsigned long)rport >= (unsigned long)port)
- rp = rp->next;
+ rp = rcu_dereference(rp->next);
}
if (!prev)