net: change netdev->features to u32

[karo-tx-linux.git] / include / linux / netdevice.h

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 371fa8839d51f78c7a73d700da25e29f6035b546..0de3c59720fa1543af48645244a09250caa4df17 100644 (file)
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -554,14 +554,16 @@ struct rps_map {
 #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16)))
 
 /*
- * 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.
+ * The rps_dev_flow structure contains the mapping of a flow to a CPU, the
+ * tail pointer for that CPU's input queue at the time of last enqueue, and
+ * a hardware filter index.
  */
 struct rps_dev_flow {
        u16 cpu;
-       u16 fill;
+       u16 filter;
        unsigned int last_qtail;
 };
+#define RPS_NO_FILTER 0xffff
 
 /*
  * The rps_dev_flow_table structure contains a table of flow mappings.
@@ -611,6 +613,11 @@ static inline void rps_reset_sock_flow(struct rps_sock_flow_table *table,
 
 extern struct rps_sock_flow_table __rcu *rps_sock_flow_table;
 
+#ifdef CONFIG_RFS_ACCEL
+extern bool rps_may_expire_flow(struct net_device *dev, u16 rxq_index,
+                               u32 flow_id, u16 filter_id);
+#endif
+
 /* This structure contains an instance of an RX queue. */
 struct netdev_rx_queue {
        struct rps_map __rcu            *rps_map;
@@ -769,6 +776,13 @@ struct netdev_tc_txq {
  *     is always called from the stack with the rtnl lock held and netif tx
  *     queues stopped. This allows the netdevice to perform queue management
  *     safely.
+ *
+ *     RFS acceleration.
+ * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb,
+ *                         u16 rxq_index, u32 flow_id);
+ *     Set hardware filter for RFS.  rxq_index is the target queue index;
+ *     flow_id is a flow ID to be passed to rps_may_expire_flow() later.
+ *     Return the filter ID on success, or a negative error code.
  */
 #define HAVE_NET_DEVICE_OPS
 struct net_device_ops {
@@ -842,6 +856,12 @@ struct net_device_ops {
        int                     (*ndo_fcoe_get_wwn)(struct net_device *dev,
                                                    u64 *wwn, int type);
 #endif
+#ifdef CONFIG_RFS_ACCEL
+       int                     (*ndo_rx_flow_steer)(struct net_device *dev,
+                                                    const struct sk_buff *skb,
+                                                    u16 rxq_index,
+                                                    u32 flow_id);
+#endif
 };
 
 /*
@@ -894,7 +914,11 @@ struct net_device {
        struct list_head        unreg_list;
 
        /* Net device features */
-       unsigned long           features;
+       u32                     features;
+
+       /* VLAN feature mask */
+       u32                     vlan_features;
+
 #define NETIF_F_SG             1       /* Scatter/gather IO. */
 #define NETIF_F_IP_CSUM                2       /* Can checksum TCP/UDP over IPv4. */
 #define NETIF_F_NO_CSUM                4       /* Does not require checksum. F.e. loopack. */
@@ -1056,6 +1080,13 @@ struct net_device {
 
        /* Number of RX queues currently active in device */
        unsigned int            real_num_rx_queues;
+
+#ifdef CONFIG_RFS_ACCEL
+       /* CPU reverse-mapping for RX completion interrupts, indexed
+        * by RX queue number.  Assigned by driver.  This must only be
+        * set if the ndo_rx_flow_steer operation is defined. */
+       struct cpu_rmap         *rx_cpu_rmap;
+#endif
 #endif
 
        rx_handler_func_t __rcu *rx_handler;
@@ -1149,9 +1180,6 @@ struct net_device {
        /* rtnetlink link ops */
        const struct rtnl_link_ops *rtnl_link_ops;
 
-       /* VLAN feature mask */
-       unsigned long vlan_features;
-
        /* for setting kernel sock attribute on TCP connection setup */
 #define GSO_MAX_SIZE           65536
        unsigned int            gso_max_size;
@@ -1374,7 +1402,7 @@ struct packet_type {
                                         struct packet_type *,
                                         struct net_device *);
        struct sk_buff          *(*gso_segment)(struct sk_buff *skb,
-                                               int features);
+                                               u32 features);
        int                     (*gso_send_check)(struct sk_buff *skb);
        struct sk_buff          **(*gro_receive)(struct sk_buff **head,
                                               struct sk_buff *skb);
@@ -2343,7 +2371,7 @@ extern int                netdev_tstamp_prequeue;
 extern int             weight_p;
 extern int             netdev_set_master(struct net_device *dev, struct net_device *master);
 extern int skb_checksum_help(struct sk_buff *skb);
-extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features);
+extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, u32 features);
 #ifdef CONFIG_BUG
 extern void netdev_rx_csum_fault(struct net_device *dev);
 #else
@@ -2370,22 +2398,21 @@ extern char *netdev_drivername(const struct net_device *dev, char *buffer, int l
 
 extern void linkwatch_run_queue(void);
 
-unsigned long netdev_increment_features(unsigned long all, unsigned long one,
-                                       unsigned long mask);
-unsigned long netdev_fix_features(unsigned long features, const char *name);
+u32 netdev_increment_features(u32 all, u32 one, u32 mask);
+u32 netdev_fix_features(u32 features, const char *name);
 
 void netif_stacked_transfer_operstate(const struct net_device *rootdev,
                                        struct net_device *dev);
 
-int netif_skb_features(struct sk_buff *skb);
+u32 netif_skb_features(struct sk_buff *skb);
 
-static inline int net_gso_ok(int features, int gso_type)
+static inline int net_gso_ok(u32 features, int gso_type)
 {
        int feature = gso_type << NETIF_F_GSO_SHIFT;
        return (features & feature) == feature;
 }
 
-static inline int skb_gso_ok(struct sk_buff *skb, int features)
+static inline int skb_gso_ok(struct sk_buff *skb, u32 features)
 {
        return net_gso_ok(features, skb_shinfo(skb)->gso_type) &&
               (!skb_has_frag_list(skb) || (features & NETIF_F_FRAGLIST));