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From 59bfe3ad924d00dc9c7a4363fcd3db36ea247988 Mon Sep 17 00:00:00 2001
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Date: Mon, 27 Jan 2020 19:00:59 +0100
Subject: [PATCH 028/116] virtiofsd: get/set features callbacks
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RH-Author: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: <20200127190227.40942-25-dgilbert@redhat.com>
Patchwork-id: 93478
O-Subject: [RHEL-AV-8.2 qemu-kvm PATCH 024/112] virtiofsd: get/set features callbacks
Bugzilla: 1694164
RH-Acked-by: Philippe Mathieu-Daudé <philmd@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Sergio Lopez Pascual <slp@redhat.com>

From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>

Add the get/set features callbacks.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
(cherry picked from commit f2cef5fb9ae20136ca18d16328787b69b3abfa18)
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 tools/virtiofsd/fuse_virtio.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/tools/virtiofsd/fuse_virtio.c b/tools/virtiofsd/fuse_virtio.c
index 1928a20..4819e56 100644
--- a/tools/virtiofsd/fuse_virtio.c
+++ b/tools/virtiofsd/fuse_virtio.c
@@ -46,6 +46,17 @@ struct virtio_fs_config {
     uint32_t num_queues;
 };
 
+/* Callback from libvhost-user */
+static uint64_t fv_get_features(VuDev *dev)
+{
+    return 1ULL << VIRTIO_F_VERSION_1;
+}
+
+/* Callback from libvhost-user */
+static void fv_set_features(VuDev *dev, uint64_t features)
+{
+}
+
 /*
  * Callback from libvhost-user if there's a new fd we're supposed to listen
  * to, typically a queue kick?
@@ -78,7 +89,9 @@ static bool fv_queue_order(VuDev *dev, int qidx)
 }
 
 static const VuDevIface fv_iface = {
-    /* TODO: Add other callbacks */
+    .get_features = fv_get_features,
+    .set_features = fv_set_features,
+
     .queue_is_processed_in_order = fv_queue_order,
 };
 
-- 
1.8.3.1