tests/9p: convert v9fs_tflush() to declarative arguments

Use declarative function arguments for function v9fs_tflush().

Signed-off-by: Christian Schoenebeck <qemu_oss@crudebyte.com>
Message-Id: <91b7b154298c500d100b05137146c2905c3acdec.1664917004.git.qemu_oss@crudebyte.com>

tests/qtest/libqos/virtio-9p-client.c

@@ -733,14 +733,29 @@ void v9fs_rwrite(P9Req *req, uint32_t *count)
 }
 
 /* size[4] Tflush tag[2] oldtag[2] */
-P9Req *v9fs_tflush(QVirtio9P *v9p, uint16_t oldtag, uint16_t tag)
+TFlushRes v9fs_tflush(TFlushOpt opt)
 {
     P9Req *req;
+    uint32_t err;
 
-    req = v9fs_req_init(v9p,  2, P9_TFLUSH, tag);
+    g_assert(opt.client);
-    v9fs_uint32_write(req, oldtag);
+
+    req = v9fs_req_init(opt.client, 2, P9_TFLUSH, opt.tag);
+    v9fs_uint32_write(req, opt.oldtag);
     v9fs_req_send(req);
-    return req;
+
+    if (!opt.requestOnly) {
+        v9fs_req_wait_for_reply(req, NULL);
+        if (opt.expectErr) {
+            v9fs_rlerror(req, &err);
+            g_assert_cmpint(err, ==, opt.expectErr);
+        } else {
+            v9fs_rflush(req);
+        }
+        req = NULL; /* request was freed */
+    }
+
+    return (TFlushRes) { .req = req };
 }
 
 /* size[4] Rflush tag[2] */

tests/qtest/libqos/virtio-9p-client.h

@@ -267,6 +267,26 @@ typedef struct TWriteRes {
     uint32_t count;
 } TWriteRes;
 
+/* options for 'Tflush' 9p request */
+typedef struct TFlushOpt {
+    /* 9P client being used (mandatory) */
+    QVirtio9P *client;
+    /* user supplied tag number being returned with response (optional) */
+    uint16_t tag;
+    /* message to flush (required) */
+    uint16_t oldtag;
+    /* only send Tflush request but not wait for a reply? (optional) */
+    bool requestOnly;
+    /* do we expect an Rlerror response, if yes which error code? (optional) */
+    uint32_t expectErr;
+} TFlushOpt;
+
+/* result of 'Tflush' 9p request */
+typedef struct TFlushRes {
+    /* if requestOnly was set: request object for further processing */
+    P9Req *req;
+} TFlushRes;
+
 void v9fs_set_allocator(QGuestAllocator *t_alloc);
 void v9fs_memwrite(P9Req *req, const void *addr, size_t len);
 void v9fs_memskip(P9Req *req, size_t len);
@@ -304,7 +324,7 @@ TLOpenRes v9fs_tlopen(TLOpenOpt);
 void v9fs_rlopen(P9Req *req, v9fs_qid *qid, uint32_t *iounit);
 TWriteRes v9fs_twrite(TWriteOpt);
 void v9fs_rwrite(P9Req *req, uint32_t *count);
-P9Req *v9fs_tflush(QVirtio9P *v9p, uint16_t oldtag, uint16_t tag);
+TFlushRes v9fs_tflush(TFlushOpt);
 void v9fs_rflush(P9Req *req);
 P9Req *v9fs_tmkdir(QVirtio9P *v9p, uint32_t dfid, const char *name,
                    uint32_t mode, uint32_t gid, uint16_t tag);

tests/qtest/virtio-9p-test.c

@@ -23,6 +23,7 @@
 #define treaddir(...) v9fs_treaddir((TReadDirOpt) __VA_ARGS__)
 #define tlopen(...) v9fs_tlopen((TLOpenOpt) __VA_ARGS__)
 #define twrite(...) v9fs_twrite((TWriteOpt) __VA_ARGS__)
+#define tflush(...) v9fs_tflush((TFlushOpt) __VA_ARGS__)
 
 static void pci_config(void *obj, void *data, QGuestAllocator *t_alloc)
 {
@@ -420,7 +421,9 @@ static void fs_flush_success(void *obj, void *data, QGuestAllocator *t_alloc)
         .requestOnly = true
     }).req;
 
-    flush_req = v9fs_tflush(v9p, req->tag, 1);
+    flush_req = tflush({
+        .client = v9p, .oldtag = req->tag, .tag = 1, .requestOnly = true
+    }).req;
 
     /* The write request is supposed to be flushed: the server should just
      * mark the write request as used and reply to the flush request.
@@ -459,7 +462,9 @@ static void fs_flush_ignored(void *obj, void *data, QGuestAllocator *t_alloc)
         .requestOnly = true
     }).req;
 
-    flush_req = v9fs_tflush(v9p, req->tag, 1);
+    flush_req = tflush({
+        .client = v9p, .oldtag = req->tag, .tag = 1, .requestOnly = true
+    }).req;
 
     /* The write request is supposed to complete. The server should
      * reply to the write request and the flush request.