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path: root/drivers/net/xen-netback/common.h
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Diffstat (limited to 'drivers/net/xen-netback/common.h')
-rw-r--r--drivers/net/xen-netback/common.h74
1 files changed, 66 insertions, 8 deletions
diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h
index f44b38846420..84d6cbdd11b2 100644
--- a/drivers/net/xen-netback/common.h
+++ b/drivers/net/xen-netback/common.h
@@ -220,6 +220,35 @@ struct xenvif_mcast_addr {
#define XEN_NETBK_MCAST_MAX 64
+#define XEN_NETBK_MAX_HASH_KEY_SIZE 40
+#define XEN_NETBK_MAX_HASH_MAPPING_SIZE 128
+#define XEN_NETBK_HASH_TAG_SIZE 40
+
+struct xenvif_hash_cache_entry {
+ struct list_head link;
+ struct rcu_head rcu;
+ u8 tag[XEN_NETBK_HASH_TAG_SIZE];
+ unsigned int len;
+ u32 val;
+ int seq;
+};
+
+struct xenvif_hash_cache {
+ spinlock_t lock;
+ struct list_head list;
+ unsigned int count;
+ atomic_t seq;
+};
+
+struct xenvif_hash {
+ unsigned int alg;
+ u32 flags;
+ u8 key[XEN_NETBK_MAX_HASH_KEY_SIZE];
+ u32 mapping[XEN_NETBK_MAX_HASH_MAPPING_SIZE];
+ unsigned int size;
+ struct xenvif_hash_cache cache;
+};
+
struct xenvif {
/* Unique identifier for this interface. */
domid_t domid;
@@ -251,6 +280,8 @@ struct xenvif {
unsigned int num_queues; /* active queues, resource allocated */
unsigned int stalled_queues;
+ struct xenvif_hash hash;
+
struct xenbus_watch credit_watch;
struct xenbus_watch mcast_ctrl_watch;
@@ -260,6 +291,11 @@ struct xenvif {
struct dentry *xenvif_dbg_root;
#endif
+ struct xen_netif_ctrl_back_ring ctrl;
+ struct task_struct *ctrl_task;
+ wait_queue_head_t ctrl_wq;
+ unsigned int ctrl_irq;
+
/* Miscellaneous private stuff. */
struct net_device *dev;
};
@@ -285,10 +321,15 @@ struct xenvif *xenvif_alloc(struct device *parent,
int xenvif_init_queue(struct xenvif_queue *queue);
void xenvif_deinit_queue(struct xenvif_queue *queue);
-int xenvif_connect(struct xenvif_queue *queue, unsigned long tx_ring_ref,
- unsigned long rx_ring_ref, unsigned int tx_evtchn,
- unsigned int rx_evtchn);
-void xenvif_disconnect(struct xenvif *vif);
+int xenvif_connect_data(struct xenvif_queue *queue,
+ unsigned long tx_ring_ref,
+ unsigned long rx_ring_ref,
+ unsigned int tx_evtchn,
+ unsigned int rx_evtchn);
+void xenvif_disconnect_data(struct xenvif *vif);
+int xenvif_connect_ctrl(struct xenvif *vif, grant_ref_t ring_ref,
+ unsigned int evtchn);
+void xenvif_disconnect_ctrl(struct xenvif *vif);
void xenvif_free(struct xenvif *vif);
int xenvif_xenbus_init(void);
@@ -300,10 +341,10 @@ int xenvif_queue_stopped(struct xenvif_queue *queue);
void xenvif_wake_queue(struct xenvif_queue *queue);
/* (Un)Map communication rings. */
-void xenvif_unmap_frontend_rings(struct xenvif_queue *queue);
-int xenvif_map_frontend_rings(struct xenvif_queue *queue,
- grant_ref_t tx_ring_ref,
- grant_ref_t rx_ring_ref);
+void xenvif_unmap_frontend_data_rings(struct xenvif_queue *queue);
+int xenvif_map_frontend_data_rings(struct xenvif_queue *queue,
+ grant_ref_t tx_ring_ref,
+ grant_ref_t rx_ring_ref);
/* Check for SKBs from frontend and schedule backend processing */
void xenvif_napi_schedule_or_enable_events(struct xenvif_queue *queue);
@@ -318,6 +359,8 @@ void xenvif_kick_thread(struct xenvif_queue *queue);
int xenvif_dealloc_kthread(void *data);
+int xenvif_ctrl_kthread(void *data);
+
void xenvif_rx_queue_tail(struct xenvif_queue *queue, struct sk_buff *skb);
void xenvif_carrier_on(struct xenvif *vif);
@@ -341,6 +384,7 @@ extern bool separate_tx_rx_irq;
extern unsigned int rx_drain_timeout_msecs;
extern unsigned int rx_stall_timeout_msecs;
extern unsigned int xenvif_max_queues;
+extern unsigned int xenvif_hash_cache_size;
#ifdef CONFIG_DEBUG_FS
extern struct dentry *xen_netback_dbg_root;
@@ -354,4 +398,18 @@ void xenvif_skb_zerocopy_complete(struct xenvif_queue *queue);
bool xenvif_mcast_match(struct xenvif *vif, const u8 *addr);
void xenvif_mcast_addr_list_free(struct xenvif *vif);
+/* Hash */
+void xenvif_init_hash(struct xenvif *vif);
+void xenvif_deinit_hash(struct xenvif *vif);
+
+u32 xenvif_set_hash_alg(struct xenvif *vif, u32 alg);
+u32 xenvif_get_hash_flags(struct xenvif *vif, u32 *flags);
+u32 xenvif_set_hash_flags(struct xenvif *vif, u32 flags);
+u32 xenvif_set_hash_key(struct xenvif *vif, u32 gref, u32 len);
+u32 xenvif_set_hash_mapping_size(struct xenvif *vif, u32 size);
+u32 xenvif_set_hash_mapping(struct xenvif *vif, u32 gref, u32 len,
+ u32 off);
+
+void xenvif_set_skb_hash(struct xenvif *vif, struct sk_buff *skb);
+
#endif /* __XEN_NETBACK__COMMON_H__ */