Drivers: hv: Manage signaling state on a per-connection basis
The current code has a global handle for supporting signaling of the host
from guest. Make this a per-channel attribute as on some versions of the
host we can signal on per-channel handle.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index e725026..c6e2c44 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -897,6 +897,27 @@
struct vmbus_channel_close_channel msg;
};
+/* Define connection identifier type. */
+union hv_connection_id {
+ u32 asu32;
+ struct {
+ u32 id:24;
+ u32 reserved:8;
+ } u;
+};
+
+/* Definition of the hv_signal_event hypercall input structure. */
+struct hv_input_signal_event {
+ union hv_connection_id connectionid;
+ u16 flag_number;
+ u16 rsvdz;
+};
+
+struct hv_input_signal_event_buffer {
+ u64 align8;
+ struct hv_input_signal_event event;
+};
+
struct vmbus_channel {
struct list_head listentry;
@@ -946,6 +967,10 @@
*/
bool batched_reading;
+
+ bool is_dedicated_interrupt;
+ struct hv_input_signal_event_buffer sig_buf;
+ struct hv_input_signal_event *sig_event;
};
static inline void set_channel_read_state(struct vmbus_channel *c, bool state)