[PATCH 01/12] vdpa: add back vhost_vdpa_net_first_nc_vdpa

[Si-Wei Liu]

Previous commits had it removed. Now adding it back because
this function will be needed by future patches.

Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
---
 net/vhost-vdpa.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 46e350a..4479ffa 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -280,6 +280,16 @@ static ssize_t vhost_vdpa_receive(NetClientState *nc, 
const uint8_t *buf,
     return size;
 }
 
+
+/** From any vdpa net client, get the netclient of the first queue pair */
+static VhostVDPAState *vhost_vdpa_net_first_nc_vdpa(VhostVDPAState *s)
+{
+    NICState *nic = qemu_get_nic(s->nc.peer);
+    NetClientState *nc0 = qemu_get_peer(nic->ncs, 0);
+
+    return DO_UPCAST(VhostVDPAState, nc, nc0);
+}
+
 static void vhost_vdpa_net_log_global_enable(VhostVDPAState *s, bool enable)
 {
     struct vhost_vdpa *v = &s->vhost_vdpa;
@@ -492,7 +502,7 @@ dma_map_err:
 
 static int vhost_vdpa_net_cvq_start(NetClientState *nc)
 {
-    VhostVDPAState *s;
+    VhostVDPAState *s, *s0;
     struct vhost_vdpa *v;
     int64_t cvq_group;
     int r;
@@ -503,7 +513,8 @@ static int vhost_vdpa_net_cvq_start(NetClientState *nc)
     s = DO_UPCAST(VhostVDPAState, nc, nc);
     v = &s->vhost_vdpa;
 
-    v->shadow_vqs_enabled = v->shared->shadow_data;
+    s0 = vhost_vdpa_net_first_nc_vdpa(s);
+    v->shadow_vqs_enabled = s0->vhost_vdpa.shadow_vqs_enabled;
     s->vhost_vdpa.address_space_id = VHOST_VDPA_GUEST_PA_ASID;
 
     if (v->shared->shadow_data) {
-- 
1.8.3.1