X-Git-Url: http://bbs.cooldavid.org/git/?a=blobdiff_plain;f=include%2Flinux%2Fnetdevice.h;h=badf9285fe0dbda63b24b6fccc05dcb90d2c4289;hb=1d24eb4815d1e0e8b451ecc546645f8ef1176d4f;hp=072652d94d9f5afe908f982c1acce9339bfbfc32;hpb=e596c79050eafea89cf9fe26b7a807643a2a9904;p=net-next-2.6.git

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 072652d94d9..badf9285fe0 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -503,6 +503,10 @@ struct netdev_queue {
 	struct Qdisc		*qdisc;
 	unsigned long		state;
 	struct Qdisc		*qdisc_sleeping;
+#ifdef CONFIG_RPS
+	struct kobject		kobj;
+#endif
+
 /*
  * write mostly part
  */
@@ -529,6 +533,30 @@ struct rps_map {
 };
 #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16)))
 
+/*
+ * This structure holds an XPS map which can be of variable length.  The
+ * map is an array of queues.
+ */
+struct xps_map {
+	unsigned int len;
+	unsigned int alloc_len;
+	struct rcu_head rcu;
+	u16 queues[0];
+};
+#define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + (_num * sizeof(u16)))
+#define XPS_MIN_MAP_ALLOC ((L1_CACHE_BYTES - sizeof(struct xps_map))	\
+    / sizeof(u16))
+
+/*
+ * This structure holds all XPS maps for device.  Maps are indexed by CPU.
+ */
+struct xps_dev_maps {
+	struct rcu_head rcu;
+	struct xps_map *cpu_map[0];
+};
+#define XPS_DEV_MAPS_SIZE (sizeof(struct xps_dev_maps) +		\
+    (nr_cpu_ids * sizeof(struct xps_map *)))
+
 /*
  * The rps_dev_flow structure contains the mapping of a flow to a CPU and the
  * tail pointer for that CPU's input queue at the time of last enqueue.
@@ -592,8 +620,7 @@ struct netdev_rx_queue {
 	struct rps_map __rcu		*rps_map;
 	struct rps_dev_flow_table __rcu	*rps_flow_table;
 	struct kobject			kobj;
-	struct netdev_rx_queue		*first;
-	atomic_t			count;
+	struct net_device		*dev;
 } ____cacheline_aligned_in_smp;
 #endif /* CONFIG_RPS */
 
@@ -951,7 +978,7 @@ struct net_device {
 #endif
 	void 			*atalk_ptr;	/* AppleTalk link 	*/
 	struct in_device __rcu	*ip_ptr;	/* IPv4 specific data	*/
-	void                    *dn_ptr;        /* DECnet specific data */
+	struct dn_dev __rcu     *dn_ptr;        /* DECnet specific data */
 	struct inet6_dev __rcu	*ip6_ptr;       /* IPv6 specific data */
 	void			*ec_ptr;	/* Econet specific data	*/
 	void			*ax25_ptr;	/* AX.25 specific data */
@@ -995,8 +1022,8 @@ struct net_device {
 	unsigned int		real_num_rx_queues;
 #endif
 
-	rx_handler_func_t	*rx_handler;
-	void			*rx_handler_data;
+	rx_handler_func_t __rcu	*rx_handler;
+	void __rcu		*rx_handler_data;
 
 	struct netdev_queue __rcu *ingress_queue;
 
@@ -1017,6 +1044,8 @@ struct net_device {
 	unsigned long		tx_queue_len;	/* Max frames per queue allowed */
 	spinlock_t		tx_global_lock;
 
+	struct xps_dev_maps	*xps_maps;
+
 	/* These may be needed for future network-power-down code. */
 
 	/*
@@ -1554,6 +1583,11 @@ static inline void netif_tx_wake_all_queues(struct net_device *dev)
 
 static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue)
 {
+	if (WARN_ON(!dev_queue)) {
+		printk(KERN_INFO "netif_stop_queue() cannot be called before "
+		       "register_netdev()");
+		return;
+	}
 	set_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
 }
 
@@ -2234,6 +2268,8 @@ unsigned long netdev_fix_features(unsigned long features, const char *name);
 void netif_stacked_transfer_operstate(const struct net_device *rootdev,
 					struct net_device *dev);
 
+int netif_get_vlan_features(struct sk_buff *skb, struct net_device *dev);
+
 static inline int net_gso_ok(int features, int gso_type)
 {
 	int feature = gso_type << NETIF_F_GSO_SHIFT;
@@ -2249,10 +2285,7 @@ static inline int skb_gso_ok(struct sk_buff *skb, int features)
 static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
 {
 	if (skb_is_gso(skb)) {
-		int features = dev->features;
-
-		if (skb->protocol == htons(ETH_P_8021Q) || skb->vlan_tci)
-			features &= dev->vlan_features;
+		int features = netif_get_vlan_features(skb, dev);
 
 		return (!skb_gso_ok(skb, features) ||
 			unlikely(skb->ip_summed != CHECKSUM_PARTIAL));