[RFC v3 1/8] net: introduce qemu_get_peer

[Cindy Lu <lulu@redhat.com>]

This is a small function that can get the peer from given NetClientState and queue_index

Signed-off-by: Cindy Lu <lulu@redhat.com>
---
 include/net/net.h | 1 +
 net/net.c         | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/include/net/net.h b/include/net/net.h
index 39085d9444..e7ef42d62b 100644
--- a/include/net/net.h
+++ b/include/net/net.h
@@ -176,6 +176,7 @@ void hmp_info_network(Monitor *mon, const QDict *qdict);
 void net_socket_rs_init(SocketReadState *rs,
                         SocketReadStateFinalize *finalize,
                         bool vnet_hdr);
+NetClientState *qemu_get_peer(NetClientState *nc, int queue_index);
 
 /* NIC info */
 
diff --git a/net/net.c b/net/net.c
index 38778e831d..599fb61028 100644
--- a/net/net.c
+++ b/net/net.c
@@ -324,6 +324,12 @@ void *qemu_get_nic_opaque(NetClientState *nc)
 
     return nic->opaque;
 }
+NetClientState *qemu_get_peer(NetClientState *nc, int queue_index)
+{
+    assert(nc != NULL);
+    NetClientState *ncs = nc + queue_index;
+    return ncs->peer;
+}
 
 static void qemu_cleanup_net_client(NetClientState *nc)
 {
-- 
2.21.1