net: rename CONFIG_NET_LL_RX_POLL to CONFIG_NET_RX_BUSY_POLL

[linux-imx.git] / include / linux / netdevice.h

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 96e4c21e15e04e3529021d2e244c41b14d61d05b..9a4156845e9348cb4fe4b803a64041d1db5de377 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -324,12 +324,15 @@ struct napi_struct {
        struct sk_buff          *gro_list;
        struct sk_buff          *skb;
        struct list_head        dev_list;
+       struct hlist_node       napi_hash_node;
+       unsigned int            napi_id;
 };
 
 enum {
        NAPI_STATE_SCHED,       /* Poll is scheduled */
        NAPI_STATE_DISABLE,     /* Disable pending */
        NAPI_STATE_NPSVC,       /* Netpoll - don't dequeue from poll_list */
+       NAPI_STATE_HASHED,      /* In NAPI hash */
 };
 
 enum gro_result {
@@ -445,6 +448,32 @@ static inline bool napi_reschedule(struct napi_struct *napi)
 extern void __napi_complete(struct napi_struct *n);
 extern void napi_complete(struct napi_struct *n);
 
+/**
+ *     napi_by_id - lookup a NAPI by napi_id
+ *     @napi_id: hashed napi_id
+ *
+ * lookup @napi_id in napi_hash table
+ * must be called under rcu_read_lock()
+ */
+extern struct napi_struct *napi_by_id(unsigned int napi_id);
+
+/**
+ *     napi_hash_add - add a NAPI to global hashtable
+ *     @napi: napi context
+ *
+ * generate a new napi_id and store a @napi under it in napi_hash
+ */
+extern void napi_hash_add(struct napi_struct *napi);
+
+/**
+ *     napi_hash_del - remove a NAPI from global table
+ *     @napi: napi context
+ *
+ * Warning: caller must observe rcu grace period
+ * before freeing memory containing @napi
+ */
+extern void napi_hash_del(struct napi_struct *napi);
+
 /**
  *     napi_disable - prevent NAPI from scheduling
  *     @n: napi context
@@ -800,6 +829,7 @@ struct netdev_fcoe_hbainfo {
  * int (*ndo_set_vf_spoofchk)(struct net_device *dev, int vf, bool setting);
  * int (*ndo_get_vf_config)(struct net_device *dev,
  *                         int vf, struct ifla_vf_info *ivf);
+ * int (*ndo_set_vf_link_state)(struct net_device *dev, int vf, int link_state);
  * int (*ndo_set_vf_port)(struct net_device *dev, int vf,
  *                       struct nlattr *port[]);
  * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb);
@@ -942,6 +972,9 @@ struct net_device_ops {
                                                     struct netpoll_info *info,
                                                     gfp_t gfp);
        void                    (*ndo_netpoll_cleanup)(struct net_device *dev);
+#endif
+#ifdef CONFIG_NET_RX_BUSY_POLL
+       int                     (*ndo_busy_poll)(struct napi_struct *dev);
 #endif
        int                     (*ndo_set_vf_mac)(struct net_device *dev,
                                                  int queue, u8 *mac);
@@ -954,6 +987,8 @@ struct net_device_ops {
        int                     (*ndo_get_vf_config)(struct net_device *dev,
                                                     int vf,
                                                     struct ifla_vf_info *ivf);
+       int                     (*ndo_set_vf_link_state)(struct net_device *dev,
+                                                        int vf, int link_state);
        int                     (*ndo_set_vf_port)(struct net_device *dev,
                                                   int vf,
                                                   struct nlattr *port[]);
@@ -1088,6 +1123,8 @@ struct net_device {
         * need to set them appropriately.
         */
        netdev_features_t       hw_enc_features;
+       /* mask of fetures inheritable by MPLS */
+       netdev_features_t       mpls_features;
 
        /* Interface index. Unique device identifier    */
        int                     ifindex;
@@ -1140,8 +1177,10 @@ struct net_device {
        unsigned char           addr_assign_type; /* hw address assignment type */
        unsigned char           addr_len;       /* hardware address length      */
        unsigned char           neigh_priv_len;
-       unsigned short          dev_id;         /* for shared network cards */
-
+       unsigned short          dev_id;         /* Used to differentiate devices
+                                                * that share the same link
+                                                * layer address
+                                                */
        spinlock_t              addr_list_lock;
        struct netdev_hw_addr_list      uc;     /* Unicast mac addresses */
        struct netdev_hw_addr_list      mc;     /* Multicast mac addresses */
@@ -1593,9 +1632,34 @@ struct packet_offload {
 #define NETDEV_RELEASE         0x0012
 #define NETDEV_NOTIFY_PEERS    0x0013
 #define NETDEV_JOIN            0x0014
+#define NETDEV_CHANGEUPPER     0x0015
 
 extern int register_netdevice_notifier(struct notifier_block *nb);
 extern int unregister_netdevice_notifier(struct notifier_block *nb);
+
+struct netdev_notifier_info {
+       struct net_device *dev;
+};
+
+struct netdev_notifier_change_info {
+       struct netdev_notifier_info info; /* must be first */
+       unsigned int flags_changed;
+};
+
+static inline void netdev_notifier_info_init(struct netdev_notifier_info *info,
+                                            struct net_device *dev)
+{
+       info->dev = dev;
+}
+
+static inline struct net_device *
+netdev_notifier_info_to_dev(const struct netdev_notifier_info *info)
+{
+       return info->dev;
+}
+
+extern int call_netdevice_notifiers_info(unsigned long val, struct net_device *dev,
+                                        struct netdev_notifier_info *info);
 extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev);
 
 
@@ -1779,6 +1843,19 @@ static inline int unregister_gifconf(unsigned int family)
        return register_gifconf(family, NULL);
 }
 
+#ifdef CONFIG_NET_FLOW_LIMIT
+#define FLOW_LIMIT_HISTORY     (1 << 7)  /* must be ^2 and !overflow buckets */
+struct sd_flow_limit {
+       u64                     count;
+       unsigned int            num_buckets;
+       unsigned int            history_head;
+       u16                     history[FLOW_LIMIT_HISTORY];
+       u8                      buckets[];
+};
+
+extern int netdev_flow_limit_table_len;
+#endif /* CONFIG_NET_FLOW_LIMIT */
+
 /*
  * Incoming packets are placed on per-cpu queues
  */
@@ -1808,6 +1885,10 @@ struct softnet_data {
        unsigned int            dropped;
        struct sk_buff_head     input_pkt_queue;
        struct napi_struct      backlog;
+
+#ifdef CONFIG_NET_FLOW_LIMIT
+       struct sd_flow_limit __rcu *flow_limit;
+#endif
 };
 
 static inline void input_queue_head_incr(struct softnet_data *sd)