- patches.arch/x86_mce_intel_decode_physical_address.patch:

[linux-flexiantxendom0-3.2.10.git] / net / bridge / br_device.c

diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index 90a9024..eedf2c9 100644 (file)
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -13,8 +13,11 @@
 
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
+#include <linux/netpoll.h>
 #include <linux/etherdevice.h>
 #include <linux/ethtool.h>
+#include <linux/list.h>
+#include <linux/netfilter_bridge.h>
 
 #include <asm/uaccess.h>
 #include "br_private.h"
@@ -26,16 +29,24 @@ netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
        const unsigned char *dest = skb->data;
        struct net_bridge_fdb_entry *dst;
        struct net_bridge_mdb_entry *mdst;
+       struct br_cpu_netstats *brstats = this_cpu_ptr(br->stats);
 
-       BR_INPUT_SKB_CB(skb)->brdev = dev;
+#ifdef CONFIG_BRIDGE_NETFILTER
+       if (skb->nf_bridge && (skb->nf_bridge->mask & BRNF_BRIDGED_DNAT)) {
+               br_nf_pre_routing_finish_bridge_slow(skb);
+               return NETDEV_TX_OK;
+       }
+#endif
 
-       dev->stats.tx_packets++;
-       dev->stats.tx_bytes += skb->len;
+       brstats->tx_packets++;
+       brstats->tx_bytes += skb->len;
+
+       BR_INPUT_SKB_CB(skb)->brdev = dev;
 
        skb_reset_mac_header(skb);
        skb_pull(skb, ETH_HLEN);
 
-       if (dest[0] & 1) {
+       if (is_multicast_ether_addr(dest)) {
                if (br_multicast_rcv(br, NULL, skb))
                        goto out;
 
@@ -81,6 +92,31 @@ static int br_dev_stop(struct net_device *dev)
        return 0;
 }
 
+static struct net_device_stats *br_get_stats(struct net_device *dev)
+{
+       struct net_bridge *br = netdev_priv(dev);
+       struct net_device_stats *stats = &dev->stats;
+       struct br_cpu_netstats sum = { 0 };
+       unsigned int cpu;
+
+       for_each_possible_cpu(cpu) {
+               const struct br_cpu_netstats *bstats
+                       = per_cpu_ptr(br->stats, cpu);
+
+               sum.tx_bytes   += bstats->tx_bytes;
+               sum.tx_packets += bstats->tx_packets;
+               sum.rx_bytes   += bstats->rx_bytes;
+               sum.rx_packets += bstats->rx_packets;
+       }
+
+       stats->tx_bytes   = sum.tx_bytes;
+       stats->tx_packets = sum.tx_packets;
+       stats->rx_bytes   = sum.rx_bytes;
+       stats->rx_packets = sum.rx_packets;
+
+       return stats;
+}
+
 static int br_change_mtu(struct net_device *dev, int new_mtu)
 {
        struct net_bridge *br = netdev_priv(dev);
@@ -162,6 +198,78 @@ static int br_set_tx_csum(struct net_device *dev, u32 data)
        return 0;
 }
 
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static bool br_devices_support_netpoll(struct net_bridge *br)
+{
+       struct net_bridge_port *p;
+       bool ret = true;
+       int count = 0;
+       unsigned long flags;
+
+       spin_lock_irqsave(&br->lock, flags);
+       list_for_each_entry(p, &br->port_list, list) {
+               count++;
+               if ((p->dev->priv_flags & IFF_DISABLE_NETPOLL) ||
+                   !p->dev->netdev_ops->ndo_poll_controller)
+                       ret = false;
+       }
+       spin_unlock_irqrestore(&br->lock, flags);
+       return count != 0 && ret;
+}
+
+static void br_poll_controller(struct net_device *br_dev)
+{
+       struct netpoll *np = br_dev->npinfo->netpoll;
+
+       if (np->real_dev != br_dev)
+               netpoll_poll_dev(np->real_dev);
+}
+
+void br_netpoll_cleanup(struct net_device *dev)
+{
+       struct net_bridge *br = netdev_priv(dev);
+       struct net_bridge_port *p, *n;
+       const struct net_device_ops *ops;
+
+       br->dev->npinfo = NULL;
+       list_for_each_entry_safe(p, n, &br->port_list, list) {
+               if (p->dev) {
+                       ops = p->dev->netdev_ops;
+                       if (ops->ndo_netpoll_cleanup)
+                               ops->ndo_netpoll_cleanup(p->dev);
+                       else
+                               p->dev->npinfo = NULL;
+               }
+       }
+}
+
+void br_netpoll_disable(struct net_bridge *br,
+                       struct net_device *dev)
+{
+       if (br_devices_support_netpoll(br))
+               br->dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
+       if (dev->netdev_ops->ndo_netpoll_cleanup)
+               dev->netdev_ops->ndo_netpoll_cleanup(dev);
+       else
+               dev->npinfo = NULL;
+}
+
+void br_netpoll_enable(struct net_bridge *br,
+                      struct net_device *dev)
+{
+       if (br_devices_support_netpoll(br)) {
+               br->dev->priv_flags &= ~IFF_DISABLE_NETPOLL;
+               if (br->dev->npinfo)
+                       dev->npinfo = br->dev->npinfo;
+       } else if (!(br->dev->priv_flags & IFF_DISABLE_NETPOLL)) {
+               br->dev->priv_flags |= IFF_DISABLE_NETPOLL;
+               br_info(br,"new device %s does not support netpoll (disabling)",
+                       dev->name);
+       }
+}
+
+#endif
+
 static const struct ethtool_ops br_ethtool_ops = {
        .get_drvinfo    = br_getinfo,
        .get_link       = ethtool_op_get_link,
@@ -180,19 +288,32 @@ static const struct net_device_ops br_netdev_ops = {
        .ndo_open                = br_dev_open,
        .ndo_stop                = br_dev_stop,
        .ndo_start_xmit          = br_dev_xmit,
+       .ndo_get_stats           = br_get_stats,
        .ndo_set_mac_address     = br_set_mac_address,
        .ndo_set_multicast_list  = br_dev_set_multicast_list,
        .ndo_change_mtu          = br_change_mtu,
        .ndo_do_ioctl            = br_dev_ioctl,
+#ifdef CONFIG_NET_POLL_CONTROLLER
+       .ndo_netpoll_cleanup     = br_netpoll_cleanup,
+       .ndo_poll_controller     = br_poll_controller,
+#endif
 };
 
+static void br_dev_free(struct net_device *dev)
+{
+       struct net_bridge *br = netdev_priv(dev);
+
+       free_percpu(br->stats);
+       free_netdev(dev);
+}
+
 void br_dev_setup(struct net_device *dev)
 {
        random_ether_addr(dev->dev_addr);
        ether_setup(dev);
 
        dev->netdev_ops = &br_netdev_ops;
-       dev->destructor = free_netdev;
+       dev->destructor = br_dev_free;
        SET_ETHTOOL_OPS(dev, &br_ethtool_ops);
        dev->tx_queue_len = 0;
        dev->priv_flags = IFF_EBRIDGE;