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authorPeter Maydell <peter.maydell@linaro.org>2024-11-26 14:06:39 +0000
committerPeter Maydell <peter.maydell@linaro.org>2024-11-26 14:06:40 +0000
commitba54a7e6b86884e43bed2d2f5a79c719059652a8 (patch)
tree2083dac95fa0bc1deb753a5eeb6a50ec293537e6
parent1af7cba50c58efc207c368cbc8b61166889873b2 (diff)
parent9379ea9db3c0064fa2787db0794a23a30f7b2d2d (diff)
downloadfocaccia-qemu-ba54a7e6b86884e43bed2d2f5a79c719059652a8.tar.gz
focaccia-qemu-ba54a7e6b86884e43bed2d2f5a79c719059652a8.zip
Merge tag 'net-pull-request' of https://github.com/jasowang/qemu into staging
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# gpg: Signature made Tue 26 Nov 2024 03:57:24 GMT
# gpg:                using RSA key 215D46F48246689EC77F3562EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [marginal]
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 215D 46F4 8246 689E C77F  3562 EF04 965B 398D 6211

* tag 'net-pull-request' of https://github.com/jasowang/qemu:
  virtio-net: Add queues before loading them

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--hw/net/virtio-net.c10
-rw-r--r--hw/virtio/virtio.c7
-rw-r--r--include/hw/virtio/virtio.h2
3 files changed, 19 insertions, 0 deletions
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index bc0f31b666..6e8c51a2db 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -3064,6 +3064,15 @@ static void virtio_net_set_multiqueue(VirtIONet *n, int multiqueue)
     virtio_net_set_queue_pairs(n);
 }
 
+static int virtio_net_pre_load_queues(VirtIODevice *vdev)
+{
+    virtio_net_set_multiqueue(VIRTIO_NET(vdev),
+                              virtio_has_feature(vdev->guest_features, VIRTIO_NET_F_RSS) ||
+                              virtio_has_feature(vdev->guest_features, VIRTIO_NET_F_MQ));
+
+    return 0;
+}
+
 static int virtio_net_post_load_device(void *opaque, int version_id)
 {
     VirtIONet *n = opaque;
@@ -4073,6 +4082,7 @@ static void virtio_net_class_init(ObjectClass *klass, void *data)
     vdc->guest_notifier_mask = virtio_net_guest_notifier_mask;
     vdc->guest_notifier_pending = virtio_net_guest_notifier_pending;
     vdc->legacy_features |= (0x1 << VIRTIO_NET_F_GSO);
+    vdc->pre_load_queues = virtio_net_pre_load_queues;
     vdc->post_load = virtio_net_post_load_virtio;
     vdc->vmsd = &vmstate_virtio_net_device;
     vdc->primary_unplug_pending = primary_unplug_pending;
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index a26f18908e..f12c4aa81e 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -3255,6 +3255,13 @@ virtio_load(VirtIODevice *vdev, QEMUFile *f, int version_id)
         config_len--;
     }
 
+    if (vdc->pre_load_queues) {
+        ret = vdc->pre_load_queues(vdev);
+        if (ret) {
+            return ret;
+        }
+    }
+
     num = qemu_get_be32(f);
 
     if (num > VIRTIO_QUEUE_MAX) {
diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h
index f526ecc8fc..6386910280 100644
--- a/include/hw/virtio/virtio.h
+++ b/include/hw/virtio/virtio.h
@@ -210,6 +210,8 @@ struct VirtioDeviceClass {
     void (*guest_notifier_mask)(VirtIODevice *vdev, int n, bool mask);
     int (*start_ioeventfd)(VirtIODevice *vdev);
     void (*stop_ioeventfd)(VirtIODevice *vdev);
+    /* Called before loading queues. Useful to add queues before loading. */
+    int (*pre_load_queues)(VirtIODevice *vdev);
     /* Saving and loading of a device; trying to deprecate save/load
      * use vmsd for new devices.
      */