From c9aa596ad26ee9fa1d4f7433485a668e3485d4ca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= <eperezma@redhat.com>
Date: Tue, 6 Sep 2022 17:07:17 +0200
Subject: [PATCH] vdpa: validate MQ CVQ commands
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So we are sure we can update the device model properly before sending to
the device.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: fangyi <eric.fangyi@huawei.com>
---
 net/vhost-vdpa.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index b32fe5e68a..831709a270 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -494,6 +494,15 @@ static bool vhost_vdpa_net_cvq_validate_cmd(const void *out_buf, size_t len)
                           __func__, ctrl.cmd);
         };
         break;
+    case VIRTIO_NET_CTRL_MQ:
+        switch (ctrl.cmd) {
+        case VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET:
+            return true;
+        default:
+            qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid mq cmd %u\n",
+                          __func__, ctrl.cmd);
+        };
+        break;
     default:
         qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid control class %u\n",
                       __func__, ctrl.class);
-- 
2.27.0