qemu/queue.h: leave head structs anonymous unless necessary

Most list head structs need not be given a name.  In most cases the
name is given just in case one is going to use QTAILQ_LAST, QTAILQ_PREV
or reverse iteration, but this does not apply to lists of other kinds,
and even for QTAILQ in practice this is only rarely needed.  In addition,
we will soon reimplement those macros completely so that they do not
need a name for the head struct.  So clean up everything, not giving a
name except in the rare case where it is necessary.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

accel/kvm/kvm-all.c

@@ -86,7 +86,7 @@ struct KVMState
     int robust_singlestep;
     int debugregs;
 #ifdef KVM_CAP_SET_GUEST_DEBUG
-    struct kvm_sw_breakpoint_head kvm_sw_breakpoints;
+    QTAILQ_HEAD(, kvm_sw_breakpoint) kvm_sw_breakpoints;
 #endif
     int many_ioeventfds;
     int intx_set_mask;
@@ -102,7 +102,7 @@ struct KVMState
     int nr_allocated_irq_routes;
     unsigned long *used_gsi_bitmap;
     unsigned int gsi_count;
-    QTAILQ_HEAD(msi_hashtab, KVMMSIRoute) msi_hashtab[KVM_MSI_HASHTAB_SIZE];
+    QTAILQ_HEAD(, KVMMSIRoute) msi_hashtab[KVM_MSI_HASHTAB_SIZE];
 #endif
     KVMMemoryListener memory_listener;
     QLIST_HEAD(, KVMParkedVcpu) kvm_parked_vcpus;

block/gluster.c

@@ -72,7 +72,7 @@ typedef struct ListElement {
     GlfsPreopened saved;
 } ListElement;
 
-static QLIST_HEAD(glfs_list, ListElement) glfs_list;
+static QLIST_HEAD(, ListElement) glfs_list;
 
 static QemuOptsList qemu_gluster_create_opts = {
     .name = "qemu-gluster-create-opts",

block/mirror.c

@@ -72,7 +72,7 @@ typedef struct MirrorBlockJob {
     unsigned long *in_flight_bitmap;
     int in_flight;
     int64_t bytes_in_flight;
-    QTAILQ_HEAD(MirrorOpList, MirrorOp) ops_in_flight;
+    QTAILQ_HEAD(, MirrorOp) ops_in_flight;
     int ret;
     bool unmap;
     int target_cluster_size;

block/qcow2-bitmap.c

@@ -77,8 +77,6 @@ typedef struct Qcow2BitmapTable {
     uint32_t size; /* number of 64bit entries */
     QSIMPLEQ_ENTRY(Qcow2BitmapTable) entry;
 } Qcow2BitmapTable;
-typedef QSIMPLEQ_HEAD(Qcow2BitmapTableList, Qcow2BitmapTable)
-    Qcow2BitmapTableList;
 
 typedef struct Qcow2Bitmap {
     Qcow2BitmapTable table;
@@ -1316,7 +1314,7 @@ void qcow2_store_persistent_dirty_bitmaps(BlockDriverState *bs, Error **errp)
     int ret;
     Qcow2BitmapList *bm_list;
     Qcow2Bitmap *bm;
-    Qcow2BitmapTableList drop_tables;
+    QSIMPLEQ_HEAD(, Qcow2BitmapTable) drop_tables;
     Qcow2BitmapTable *tb, *tb_next;
 
     if (!bdrv_has_changed_persistent_bitmaps(bs)) {

block/qcow2.h

@@ -278,7 +278,10 @@ typedef struct BDRVQcow2State {
     QEMUTimer *cache_clean_timer;
     unsigned cache_clean_interval;
 
-    QLIST_HEAD(QCowClusterAlloc, QCowL2Meta) cluster_allocs;
+    uint8_t *cluster_cache;
+    uint8_t *cluster_data;
+    uint64_t cluster_cache_offset;
+    QLIST_HEAD(, QCowL2Meta) cluster_allocs;
 
     uint64_t *refcount_table;
     uint64_t refcount_table_offset;

block/sheepdog.c

@@ -391,12 +391,12 @@ struct BDRVSheepdogState {
     uint32_t aioreq_seq_num;
 
     /* Every aio request must be linked to either of these queues. */
-    QLIST_HEAD(inflight_aio_head, AIOReq) inflight_aio_head;
-    QLIST_HEAD(failed_aio_head, AIOReq) failed_aio_head;
+    QLIST_HEAD(, AIOReq) inflight_aio_head;
+    QLIST_HEAD(, AIOReq) failed_aio_head;
 
     CoMutex queue_lock;
     CoQueue overlapping_queue;
-    QLIST_HEAD(inflight_aiocb_head, SheepdogAIOCB) inflight_aiocb_head;
+    QLIST_HEAD(, SheepdogAIOCB) inflight_aiocb_head;
 };
 
 typedef struct BDRVSheepdogReopenState {

block/vhdx.h

@@ -398,7 +398,7 @@ typedef struct BDRVVHDXState {
 
     bool log_replayed_on_open;
 
-    QLIST_HEAD(VHDXRegionHead, VHDXRegionEntry) regions;
+    QLIST_HEAD(, VHDXRegionEntry) regions;
 } BDRVVHDXState;
 
 void vhdx_guid_generate(MSGUID *guid);

blockdev.c

@@ -2266,7 +2266,7 @@ void qmp_transaction(TransactionActionList *dev_list,
     BlkActionState *state, *next;
     Error *local_err = NULL;
 
-    QSIMPLEQ_HEAD(snap_bdrv_states, BlkActionState) snap_bdrv_states;
+    QSIMPLEQ_HEAD(, BlkActionState) snap_bdrv_states;
     QSIMPLEQ_INIT(&snap_bdrv_states);
 
     /* Does this transaction get canceled as a group on failure?

contrib/ivshmem-client/ivshmem-client.h

@@ -46,9 +46,7 @@ typedef struct IvshmemClientPeer {
     int vectors[IVSHMEM_CLIENT_MAX_VECTORS]; /**< one fd per vector */
     unsigned vectors_count;                  /**< number of vectors */
 } IvshmemClientPeer;
-QTAILQ_HEAD(IvshmemClientPeerList, IvshmemClientPeer);
 
-typedef struct IvshmemClientPeerList IvshmemClientPeerList;
 typedef struct IvshmemClient IvshmemClient;
 
 /**
@@ -73,7 +71,7 @@ struct IvshmemClient {
     int sock_fd;                        /**< unix sock filedesc */
     int shm_fd;                         /**< shm file descriptor */
 
-    IvshmemClientPeerList peer_list;    /**< list of peers */
+    QTAILQ_HEAD(, IvshmemClientPeer) peer_list;    /**< list of peers */
     IvshmemClientPeer local;            /**< our own infos */
 
     IvshmemClientNotifCb notif_cb;      /**< notification callback */

contrib/ivshmem-server/ivshmem-server.h

@@ -52,9 +52,6 @@ typedef struct IvshmemServerPeer {
     EventNotifier vectors[IVSHMEM_SERVER_MAX_VECTORS]; /**< one per vector */
     unsigned vectors_count;                  /**< number of vectors */
 } IvshmemServerPeer;
-QTAILQ_HEAD(IvshmemServerPeerList, IvshmemServerPeer);
-
-typedef struct IvshmemServerPeerList IvshmemServerPeerList;
 
 /**
  * Structure describing an ivshmem server
@@ -72,7 +69,7 @@ typedef struct IvshmemServer {
     unsigned n_vectors;              /**< number of vectors */
     uint16_t cur_id;                 /**< id to be given to next client */
     bool verbose;                    /**< true in verbose mode */
-    IvshmemServerPeerList peer_list; /**< list of peers */
+    QTAILQ_HEAD(, IvshmemServerPeer) peer_list; /**< list of peers */
 } IvshmemServer;
 
 /**

exec.c

@@ -3471,7 +3471,7 @@ typedef struct MapClient {
 } MapClient;
 
 QemuMutex map_client_list_lock;
-static QLIST_HEAD(map_client_list, MapClient) map_client_list
+static QLIST_HEAD(, MapClient) map_client_list
     = QLIST_HEAD_INITIALIZER(map_client_list);
 
 static void cpu_unregister_map_client_do(MapClient *client)

fsdev/qemu-fsdev.c

@@ -18,7 +18,7 @@
 #include "qemu/error-report.h"
 #include "qemu/option.h"
 
-static QTAILQ_HEAD(FsDriverEntry_head, FsDriverListEntry) fsdriver_entries =
+static QTAILQ_HEAD(, FsDriverListEntry) fsdriver_entries =
     QTAILQ_HEAD_INITIALIZER(fsdriver_entries);
 
 static FsDriverTable FsDrivers[] = {

hw/block/nvme.h

@@ -29,8 +29,8 @@ typedef struct NvmeSQueue {
     uint64_t    dma_addr;
     QEMUTimer   *timer;
     NvmeRequest *io_req;
-    QTAILQ_HEAD(sq_req_list, NvmeRequest) req_list;
-    QTAILQ_HEAD(out_req_list, NvmeRequest) out_req_list;
+    QTAILQ_HEAD(, NvmeRequest) req_list;
+    QTAILQ_HEAD(, NvmeRequest) out_req_list;
     QTAILQ_ENTRY(NvmeSQueue) entry;
 } NvmeSQueue;
 
@@ -45,8 +45,8 @@ typedef struct NvmeCQueue {
     uint32_t    size;
     uint64_t    dma_addr;
     QEMUTimer   *timer;
-    QTAILQ_HEAD(sq_list, NvmeSQueue) sq_list;
-    QTAILQ_HEAD(cq_req_list, NvmeRequest) req_list;
+    QTAILQ_HEAD(, NvmeSQueue) sq_list;
+    QTAILQ_HEAD(, NvmeRequest) req_list;
 } NvmeCQueue;
 
 typedef struct NvmeNamespace {

hw/block/xen_disk.c

@@ -82,9 +82,9 @@ struct XenBlkDev {
     int                 more_work;
 
     /* request lists */
-    QLIST_HEAD(inflight_head, ioreq) inflight;
-    QLIST_HEAD(finished_head, ioreq) finished;
-    QLIST_HEAD(freelist_head, ioreq) freelist;
+    QLIST_HEAD(, ioreq) inflight;
+    QLIST_HEAD(, ioreq) finished;
+    QLIST_HEAD(, ioreq) freelist;
     int                 requests_total;
     int                 requests_inflight;
     int                 requests_finished;

hw/core/reset.c

@@ -35,7 +35,7 @@ typedef struct QEMUResetEntry {
     void *opaque;
 } QEMUResetEntry;
 
-static QTAILQ_HEAD(reset_handlers, QEMUResetEntry) reset_handlers =
+static QTAILQ_HEAD(, QEMUResetEntry) reset_handlers =
     QTAILQ_HEAD_INITIALIZER(reset_handlers);
 
 void qemu_register_reset(QEMUResetHandler *func, void *opaque)

hw/i386/xen/xen-mapcache.c

@@ -71,7 +71,7 @@ typedef struct MapCacheRev {
 typedef struct MapCache {
     MapCacheEntry *entry;
     unsigned long nr_buckets;
-    QTAILQ_HEAD(map_cache_head, MapCacheRev) locked_entries;
+    QTAILQ_HEAD(, MapCacheRev) locked_entries;
 
     /* For most cases (>99.9%), the page address is the same. */
     MapCacheEntry *last_entry;

hw/ppc/spapr_iommu.c

@@ -42,7 +42,7 @@ enum sPAPRTCEAccess {
 #define IOMMU_PAGE_SIZE(shift)      (1ULL << (shift))
 #define IOMMU_PAGE_MASK(shift)      (~(IOMMU_PAGE_SIZE(shift) - 1))
 
-static QLIST_HEAD(spapr_tce_tables, sPAPRTCETable) spapr_tce_tables;
+static QLIST_HEAD(, sPAPRTCETable) spapr_tce_tables;
 
 sPAPRTCETable *spapr_tce_find_by_liobn(target_ulong liobn)
 {

hw/usb/ccid-card-emulated.c

@@ -119,11 +119,11 @@ struct EmulatedState {
     char    *db;
     uint8_t  atr[MAX_ATR_SIZE];
     uint8_t  atr_length;
-    QSIMPLEQ_HEAD(event_list, EmulEvent) event_list;
+    QSIMPLEQ_HEAD(, EmulEvent) event_list;
     QemuMutex event_list_mutex;
     QemuThread event_thread_id;
     VReader *reader;
-    QSIMPLEQ_HEAD(guest_apdu_list, EmulEvent) guest_apdu_list;
+    QSIMPLEQ_HEAD(, EmulEvent) guest_apdu_list;
     QemuMutex vreader_mutex; /* and guest_apdu_list mutex */
     QemuMutex handle_apdu_mutex;
     QemuCond handle_apdu_cond;

hw/usb/dev-network.c

@@ -648,7 +648,7 @@ typedef struct USBNetState {
     char usbstring_mac[13];
     NICState *nic;
     NICConf conf;
-    QTAILQ_HEAD(rndis_resp_head, rndis_response) rndis_resp;
+    QTAILQ_HEAD(, rndis_response) rndis_resp;
 } USBNetState;
 
 #define TYPE_USB_NET "usb-net"

hw/usb/xen-usb.c

@@ -72,7 +72,7 @@ struct usbback_stub {
     USBPort       port;
     unsigned int  speed;
     bool          attached;
-    QTAILQ_HEAD(submit_q_head, usbback_req) submit_q;
+    QTAILQ_HEAD(, usbback_req) submit_q;
 };
 
 struct usbback_req {
@@ -108,8 +108,8 @@ struct usbback_info {
     int                      num_ports;
     int                      usb_ver;
     bool                     ring_error;
-    QTAILQ_HEAD(req_free_q_head, usbback_req) req_free_q;
-    QSIMPLEQ_HEAD(hotplug_q_head, usbback_hotplug) hotplug_q;
+    QTAILQ_HEAD(, usbback_req) req_free_q;
+    QSIMPLEQ_HEAD(, usbback_hotplug) hotplug_q;
     struct usbback_stub      ports[USBBACK_MAXPORTS];
     struct usbback_stub      *addr_table[USB_DEV_ADDR_SIZE];
     QEMUBH                   *bh;