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authorK. Y. Srinivasan <kys@microsoft.com>2012-12-01 18:46:45 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-01-17 23:34:37 +0400
commitb3bf60c7b4665d40b8eae2217b54c4745f49f470 (patch)
tree8d07f29611a65b6b4b06ab95365aadcd77fdf399 /include/linux/hyperv.h
parenteafa7072e7cd806dff42b705284ca26189e527a4 (diff)
downloadlinux-b3bf60c7b4665d40b8eae2217b54c4745f49f470.tar.xz
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>
Diffstat (limited to 'include/linux/hyperv.h')
-rw-r--r--include/linux/hyperv.h25
1 files changed, 25 insertions, 0 deletions
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index e72502689cdc..c6e2c44a1be9 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -897,6 +897,27 @@ struct vmbus_close_msg {
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 @@ struct vmbus_channel {
*/
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)