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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.h30
1 files changed, 28 insertions, 2 deletions
diff --git a/drivers/net/xen-netback/common.h b/drivers/net/xen-netback/common.h
index 2532ce85d718..ef3026f46a37 100644
--- a/drivers/net/xen-netback/common.h
+++ b/drivers/net/xen-netback/common.h
@@ -44,6 +44,7 @@
#include <xen/interface/grant_table.h>
#include <xen/grant_table.h>
#include <xen/xenbus.h>
+#include <linux/debugfs.h>
typedef unsigned int pending_ring_idx_t;
#define INVALID_PENDING_RING_IDX (~0U)
@@ -175,9 +176,9 @@ struct xenvif_queue { /* Per-queue data for xenvif */
struct xen_netif_rx_back_ring rx;
struct sk_buff_head rx_queue;
RING_IDX rx_last_skb_slots;
- bool rx_queue_purge;
+ unsigned long status;
- struct timer_list wake_queue;
+ struct timer_list rx_stalled;
struct gnttab_copy grant_copy_op[MAX_GRANT_COPY_OPS];
@@ -197,6 +198,20 @@ struct xenvif_queue { /* Per-queue data for xenvif */
struct xenvif_stats stats;
};
+enum state_bit_shift {
+ /* This bit marks that the vif is connected */
+ VIF_STATUS_CONNECTED,
+ /* This bit signals the RX thread that queuing was stopped (in
+ * start_xmit), and either the timer fired or an RX interrupt came
+ */
+ QUEUE_STATUS_RX_PURGE_EVENT,
+ /* This bit tells the interrupt handler that this queue was the reason
+ * for the carrier off, so it should kick the thread. Only queues which
+ * brought it down can turn on the carrier.
+ */
+ QUEUE_STATUS_RX_STALLED
+};
+
struct xenvif {
/* Unique identifier for this interface. */
domid_t domid;
@@ -219,11 +234,16 @@ struct xenvif {
* frontend is rogue.
*/
bool disabled;
+ unsigned long status;
/* Queues */
struct xenvif_queue *queues;
unsigned int num_queues; /* active queues, resource allocated */
+#ifdef CONFIG_DEBUG_FS
+ struct dentry *xenvif_dbg_root;
+#endif
+
/* Miscellaneous private stuff. */
struct net_device *dev;
};
@@ -297,10 +317,16 @@ static inline pending_ring_idx_t nr_pending_reqs(struct xenvif_queue *queue)
/* Callback from stack when TX packet can be released */
void xenvif_zerocopy_callback(struct ubuf_info *ubuf, bool zerocopy_success);
+irqreturn_t xenvif_interrupt(int irq, void *dev_id);
+
extern bool separate_tx_rx_irq;
extern unsigned int rx_drain_timeout_msecs;
extern unsigned int rx_drain_timeout_jiffies;
extern unsigned int xenvif_max_queues;
+#ifdef CONFIG_DEBUG_FS
+extern struct dentry *xen_netback_dbg_root;
+#endif
+
#endif /* __XEN_NETBACK__COMMON_H__ */