virtio-9p/xen-9p: move 9p specific bits to core 9p code

These bits aren't related to the transport so let's move them to the core
code.

Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

4 files changed, 10 insertions, 14 deletions

diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index ab3e22f231..b3048371a8 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -3446,12 +3446,16 @@ static inline bool is_read_only_op(V9fsPDU *pdu)
     }
 }
 
-void pdu_submit(V9fsPDU *pdu)
+void pdu_submit(V9fsPDU *pdu, P9MsgHeader *hdr)
 {
     Coroutine *co;
     CoroutineEntry *handler;
     V9fsState *s = pdu->s;
 
+    pdu->size = le32_to_cpu(hdr->size_le);
+    pdu->id = hdr->id;
+    pdu->tag = le16_to_cpu(hdr->tag_le);
+
     if (pdu->id >= ARRAY_SIZE(pdu_co_handlers) ||
         (pdu_co_handlers[pdu->id] == NULL)) {
         handler = v9fs_op_not_supp;
@@ -3462,6 +3466,8 @@ void pdu_submit(V9fsPDU *pdu)
     if (is_ro_export(&s->ctx) && !is_read_only_op(pdu)) {
         handler = v9fs_fs_ro;
     }
+
+    qemu_co_queue_init(&pdu->complete);
     co = qemu_coroutine_create(handler, pdu);
     qemu_coroutine_enter(co);
 }
diff --git a/hw/9pfs/9p.h b/hw/9pfs/9p.h
index 5312d8a424..c886ba78d2 100644
--- a/hw/9pfs/9p.h
+++ b/hw/9pfs/9p.h
@@ -347,7 +347,7 @@ ssize_t pdu_marshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...);
 ssize_t pdu_unmarshal(V9fsPDU *pdu, size_t offset, const char *fmt, ...);
 V9fsPDU *pdu_alloc(V9fsState *s);
 void pdu_free(V9fsPDU *pdu);
-void pdu_submit(V9fsPDU *pdu);
+void pdu_submit(V9fsPDU *pdu, P9MsgHeader *hdr);
 void v9fs_reset(V9fsState *s);
 
 struct V9fsTransport {
diff --git a/hw/9pfs/virtio-9p-device.c b/hw/9pfs/virtio-9p-device.c
index 3782f43702..245abd8aae 100644
--- a/hw/9pfs/virtio-9p-device.c
+++ b/hw/9pfs/virtio-9p-device.c
@@ -70,13 +70,7 @@ static void handle_9p_output(VirtIODevice *vdev, VirtQueue *vq)
             goto out_free_req;
         }
 
-        pdu->size = le32_to_cpu(out.size_le);
-
-        pdu->id = out.id;
-        pdu->tag = le16_to_cpu(out.tag_le);
-
-        qemu_co_queue_init(&pdu->complete);
-        pdu_submit(pdu);
+        pdu_submit(pdu, &out);
     }
 
     return;
diff --git a/hw/9pfs/xen-9p-backend.c b/hw/9pfs/xen-9p-backend.c
index 5df97c90fa..922cc967be 100644
--- a/hw/9pfs/xen-9p-backend.c
+++ b/hw/9pfs/xen-9p-backend.c
@@ -243,14 +243,10 @@ static int xen_9pfs_receive(Xen9pfsRing *ring)
 
     /* cannot fail, because we only handle one request per ring at a time */
     pdu = pdu_alloc(&ring->priv->state);
-    pdu->size = le32_to_cpu(h.size_le);
-    pdu->id = h.id;
-    pdu->tag = le32_to_cpu(h.tag_le);
     ring->out_size = le32_to_cpu(h.size_le);
     ring->out_cons = cons + le32_to_cpu(h.size_le);
 
-    qemu_co_queue_init(&pdu->complete);
-    pdu_submit(pdu);
+    pdu_submit(pdu, &h);
 
     return 0;
 }