[Qemu-devel] [PATCH 2/2] spice-char: notify the server when chardev is writable

[Marc-André Lureau]

The spice server is polling on write, unless
SPICE_CHAR_DEVICE_NOTIFY_WRITABLE flag is set. In this case, qemu must
call spice_server_char_device_wakeup() when the frontend is writable.

Signed-off-by: Marc-André Lureau <marcandre.lur...@gmail.com>
---
 spice-qemu-char.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/spice-qemu-char.c b/spice-qemu-char.c
index 8106e06..3de01d1 100644
--- a/spice-qemu-char.c
+++ b/spice-qemu-char.c
@@ -111,6 +111,9 @@ static SpiceCharDeviceInterface vmc_interface = {
 #if SPICE_SERVER_VERSION >= 0x000c02
     .event              = vmc_event,
 #endif
+#if SPICE_SERVER_VERSION >= 0x000c06
+    .flags              = SPICE_CHAR_DEVICE_NOTIFY_WRITABLE,
+#endif
 };
 
 
@@ -261,6 +264,13 @@ static void print_allowed_subtypes(void)
     fprintf(stderr, "\n");
 }
 
+static void spice_chr_accept_input(struct CharDriverState *chr)
+{
+    SpiceCharDriver *s = chr->opaque;
+
+    spice_server_char_device_wakeup(&s->sin);
+}
+
 static CharDriverState *chr_open(const char *subtype,
     void (*set_fe_open)(struct CharDriverState *, int))
 
@@ -280,6 +290,7 @@ static CharDriverState *chr_open(const char *subtype,
     chr->chr_set_fe_open = set_fe_open;
     chr->explicit_be_open = true;
     chr->chr_fe_event = spice_chr_fe_event;
+    chr->chr_accept_input = spice_chr_accept_input;
 
     QLIST_INSERT_HEAD(&spice_chars, s, next);
 
-- 
1.9.3