enic: Add Accelerated RFS support

[cascardo/linux.git] / drivers / net / ethernet / cisco / enic / enic.h

diff --git a/drivers/net/ethernet/cisco/enic/enic.h b/drivers/net/ethernet/cisco/enic/enic.h
index 14f465f..b9b9178 100644 (file)
--- a/drivers/net/ethernet/cisco/enic/enic.h
+++ b/drivers/net/ethernet/cisco/enic/enic.h
@@ -99,6 +99,44 @@ struct enic_port_profile {
        u8 mac_addr[ETH_ALEN];
 };
 
+#ifdef CONFIG_RFS_ACCEL
+/* enic_rfs_fltr_node - rfs filter node in hash table
+ *     @@keys: IPv4 5 tuple
+ *     @flow_id: flow_id of clsf filter provided by kernel
+ *     @fltr_id: filter id of clsf filter returned by adaptor
+ *     @rq_id: desired rq index
+ *     @node: hlist_node
+ */
+struct enic_rfs_fltr_node {
+       struct flow_keys keys;
+       u32 flow_id;
+       u16 fltr_id;
+       u16 rq_id;
+       struct hlist_node node;
+};
+
+/* enic_rfs_flw_tbl - rfs flow table
+ *     @max: Maximum number of filters vNIC supports
+ *     @free: Number of free filters available
+ *     @toclean: hash table index to clean next
+ *     @ht_head: hash table list head
+ *     @lock: spin lock
+ *     @rfs_may_expire: timer function for enic_rps_may_expire_flow
+ */
+struct enic_rfs_flw_tbl {
+       u16 max;
+       int free;
+
+#define ENIC_RFS_FLW_BITSHIFT  (10)
+#define ENIC_RFS_FLW_MASK      ((1 << ENIC_RFS_FLW_BITSHIFT) - 1)
+       u16 toclean:ENIC_RFS_FLW_BITSHIFT;
+       struct hlist_head ht_head[1 << ENIC_RFS_FLW_BITSHIFT];
+       spinlock_t lock;
+       struct timer_list rfs_may_expire;
+};
+
+#endif /* CONFIG_RFS_ACCEL */
+
 /* Per-instance private data structure */
 struct enic {
        struct net_device *netdev;
@@ -150,6 +188,9 @@ struct enic {
        /* completion queue cache line section */
        ____cacheline_aligned struct vnic_cq cq[ENIC_CQ_MAX];
        unsigned int cq_count;
+#ifdef CONFIG_RFS_ACCEL
+       struct enic_rfs_flw_tbl rfs_h;
+#endif
 };
 
 static inline struct device *enic_get_dev(struct enic *enic)