Drivers: hv: util: Properly handle version negotiations.
The current version negotiation code is not "future proof". Fix this
by allowing each service the flexibility to either specify the highest
version it can support or it can support the highest version number
the host is offering.
Signed-off-by: K. Y. Srinivasan <[email protected]>
Reviewed-by: Haiyang Zhang <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index 5852545..22172bd 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -1035,8 +1035,10 @@
void (*callback) (void *context);
};
+#define MAX_SRV_VER 0x7ffffff
extern void vmbus_prep_negotiate_resp(struct icmsg_hdr *,
- struct icmsg_negotiate *, u8 *);
+ struct icmsg_negotiate *, u8 *, int,
+ int);
int hv_kvp_init(struct hv_util_service *);
void hv_kvp_deinit(void);
