Merge tag 'net-pull-request' of https://github.com/jasowang/qemu into staging

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# gpg: Signature made Mon 14 Jul 2025 01:28:27 EDT
# gpg:                using RSA key 215D46F48246689EC77F3562EF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@redhat.com>" [full]
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* tag 'net-pull-request' of https://github.com/jasowang/qemu:
  net/passt: Implement vhost-user backend support
  net: Add passt network backend
  net: Add is_vhost_user flag to vhost_net struct
  net: Allow network backends to advertise max TX queue size
  net: Add save_acked_features callback to vhost_net
  net: Add get_acked_features callback to VhostNetOptions
  net: Consolidate vhost feature bits into vhost_net structure
  net: Add get_vhost_net callback to NetClientInfo
  vhost_net: Rename vhost_set_vring_enable() for clarity
  net: Define net_client_set_link()
  net: Refactor stream logic for reuse in '-net passt'
  virtio-net: Add queues for RSS during migration
  net: fix buffer overflow in af_xdp_umem_create()

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 24 insertions, 12 deletions

diff --git a/net/net.c b/net/net.c
index 39d6f28158..90f69fdf39 100644
--- a/net/net.c
+++ b/net/net.c
@@ -1248,6 +1248,9 @@ static int (* const net_client_init_fun[NET_CLIENT_DRIVER__MAX])(
     const char *name,
     NetClientState *peer, Error **errp) = {
         [NET_CLIENT_DRIVER_NIC]       = net_init_nic,
+#ifdef CONFIG_PASST
+        [NET_CLIENT_DRIVER_PASST]     = net_init_passt,
+#endif
 #ifdef CONFIG_SLIRP
         [NET_CLIENT_DRIVER_USER]      = net_init_slirp,
 #endif
@@ -1353,6 +1356,7 @@ void show_netdevs(void)
         "dgram",
         "hubport",
         "tap",
+        "passt",
 #ifdef CONFIG_SLIRP
         "user",
 #endif
@@ -1601,21 +1605,11 @@ void colo_notify_filters_event(int event, Error **errp)
     }
 }
 
-void qmp_set_link(const char *name, bool up, Error **errp)
+void net_client_set_link(NetClientState **ncs, int queues, bool up)
 {
-    NetClientState *ncs[MAX_QUEUE_NUM];
     NetClientState *nc;
-    int queues, i;
-
-    queues = qemu_find_net_clients_except(name, ncs,
-                                          NET_CLIENT_DRIVER__MAX,
-                                          MAX_QUEUE_NUM);
+    int i;
 
-    if (queues == 0) {
-        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
-                  "Device '%s' not found", name);
-        return;
-    }
     nc = ncs[0];
 
     for (i = 0; i < queues; i++) {
@@ -1646,6 +1640,24 @@ void qmp_set_link(const char *name, bool up, Error **errp)
     }
 }
 
+void qmp_set_link(const char *name, bool up, Error **errp)
+{
+    NetClientState *ncs[MAX_QUEUE_NUM];
+    int queues;
+
+    queues = qemu_find_net_clients_except(name, ncs,
+                                          NET_CLIENT_DRIVER__MAX,
+                                          MAX_QUEUE_NUM);
+
+    if (queues == 0) {
+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,
+                  "Device '%s' not found", name);
+        return;
+    }
+
+    net_client_set_link(ncs, queues, up);
+}
+
 static void net_vm_change_state_handler(void *opaque, bool running,
                                         RunState state)
 {