[PATCH 04/12] vdpa: factor out vhost_vdpa_net_get_nc_vdpa

[Si-Wei Liu <si-wei.liu@oracle.com>]

Introduce new API. No functional change on existing API.

Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
---
 net/vhost-vdpa.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 06c83b4..4168cad 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -281,13 +281,18 @@ static ssize_t vhost_vdpa_receive(NetClientState *nc, const uint8_t *buf,
 }
 
 
-/** From any vdpa net client, get the netclient of the first queue pair */
-static VhostVDPAState *vhost_vdpa_net_first_nc_vdpa(VhostVDPAState *s)
+/** From any vdpa net client, get the netclient of the i-th queue pair */
+static VhostVDPAState *vhost_vdpa_net_get_nc_vdpa(VhostVDPAState *s, int i)
 {
     NICState *nic = qemu_get_nic(s->nc.peer);
-    NetClientState *nc0 = qemu_get_peer(nic->ncs, 0);
+    NetClientState *nc_i = qemu_get_peer(nic->ncs, i);
+
+    return DO_UPCAST(VhostVDPAState, nc, nc_i);
+}
 
-    return DO_UPCAST(VhostVDPAState, nc, nc0);
+static VhostVDPAState *vhost_vdpa_net_first_nc_vdpa(VhostVDPAState *s)
+{
+    return vhost_vdpa_net_get_nc_vdpa(s, 0);
 }
 
 static void vhost_vdpa_net_log_global_enable(VhostVDPAState *s, bool enable)
-- 
1.8.3.1