commit cc1f0f45425d0cca41ad421623f92bebc93a21a9
author Jason Wang <jasowang@redhat.com> Wed Jan 30 19:12:23 2013 +0800
committer Anthony Liguori <aliguori@us.ibm.com> Fri Feb 01 11:03:00 2013 -0600
tree 8015fb30e1da7eab59fbbf236f790500a47cbea0
parent b356f76de31e343121cdab3a01b39182edce9519

net: introduce qemu_get_nic()

To support multiqueue, this patch introduces a helper qemu_get_nic() to get
NICState from a NetClientState. The following patches would refactor this helper
to support multiqueue.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

hw/usb/dev-network.c

diff --git a/hw/usb/dev-network.c b/hw/usb/dev-network.c
index a131f9c..abc6eac 100644
--- a/hw/usb/dev-network.c
+++ b/hw/usb/dev-network.c
@@ -1261,7 +1261,7 @@
 
 static ssize_t usbnet_receive(NetClientState *nc, const uint8_t *buf, size_t size)
 {
-    USBNetState *s = DO_UPCAST(NICState, nc, nc)->opaque;
+    USBNetState *s = qemu_get_nic_opaque(nc);
     uint8_t *in_buf = s->in_buf;
     size_t total_size = size;
 
@@ -1308,7 +1308,7 @@
 
 static int usbnet_can_receive(NetClientState *nc)
 {
-    USBNetState *s = DO_UPCAST(NICState, nc, nc)->opaque;
+    USBNetState *s = qemu_get_nic_opaque(nc);
 
     if (is_rndis(s) && s->rndis_state != RNDIS_DATA_INITIALIZED) {
         return 1;
@@ -1319,7 +1319,7 @@
 
 static void usbnet_cleanup(NetClientState *nc)
 {
-    USBNetState *s = DO_UPCAST(NICState, nc, nc)->opaque;
+    USBNetState *s = qemu_get_nic_opaque(nc);
 
     s->nic = NULL;
 }