Patchwork [01/15] net: move net-queue.[ch] under net/

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Submitter Mark McLoughlin
Date Oct. 22, 2009, 4:49 p.m.
Message ID <1256230156-29652-2-git-send-email-markmc@redhat.com>
Download mbox | patch
Permalink /patch/36719/
State New
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Mark McLoughlin - Oct. 22, 2009, 4:49 p.m.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
---
 Makefile    |    6 +-
 net-queue.c |  260 -----------------------------------------------------------
 net-queue.h |   71 ----------------
 net.h       |    2 +-
 net/queue.c |  260 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 net/queue.h |   71 ++++++++++++++++
 6 files changed, 337 insertions(+), 333 deletions(-)
 delete mode 100644 net-queue.c
 delete mode 100644 net-queue.h
 create mode 100644 net/queue.c
 create mode 100644 net/queue.h

Patch

diff --git a/Makefile b/Makefile
index e78a3d0..6fb89fb 100644
--- a/Makefile
+++ b/Makefile
@@ -86,6 +86,10 @@  block-nested-$(CONFIG_CURL) += curl.o
 
 block-obj-y +=  $(addprefix block/, $(block-nested-y))
 
+net-obj-y = net.o
+net-nested-y = queue.o
+net-obj-y += $(addprefix net/, $(net-nested-y))
+
 ######################################################################
 # libqemu_common.a: Target independent part of system emulation. The
 # long term path is to suppress *all* target specific code in case of
@@ -93,6 +97,7 @@  block-obj-y +=  $(addprefix block/, $(block-nested-y))
 # CPUs and machines.
 
 obj-y = $(block-obj-y)
+obj-y += $(net-obj-y)
 obj-y += readline.o console.o
 
 obj-y += tcg-runtime.o host-utils.o
@@ -121,7 +126,6 @@  obj-$(CONFIG_SD) += sd.o
 obj-y += bt.o bt-host.o bt-vhci.o bt-l2cap.o bt-sdp.o bt-hci.o bt-hid.o usb-bt.o
 obj-y += bt-hci-csr.o
 obj-y += buffered_file.o migration.o migration-tcp.o qemu-sockets.o
-obj-y += net.o net-queue.o
 obj-y += qemu-char.o aio.o net-checksum.o savevm.o
 obj-y += msmouse.o ps2.o
 obj-y += qdev.o qdev-properties.o
diff --git a/net-queue.c b/net-queue.c
deleted file mode 100644
index f6b01e9..0000000
--- a/net-queue.c
+++ /dev/null
@@ -1,260 +0,0 @@ 
-/*
- * Copyright (c) 2003-2008 Fabrice Bellard
- * Copyright (c) 2009 Red Hat, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "net-queue.h"
-#include "qemu-queue.h"
-
-/* The delivery handler may only return zero if it will call
- * qemu_net_queue_flush() when it determines that it is once again able
- * to deliver packets. It must also call qemu_net_queue_purge() in its
- * cleanup path.
- *
- * If a sent callback is provided to send(), the caller must handle a
- * zero return from the delivery handler by not sending any more packets
- * until we have invoked the callback. Only in that case will we queue
- * the packet.
- *
- * If a sent callback isn't provided, we just drop the packet to avoid
- * unbounded queueing.
- */
-
-struct NetPacket {
-    QTAILQ_ENTRY(NetPacket) entry;
-    VLANClientState *sender;
-    unsigned flags;
-    int size;
-    NetPacketSent *sent_cb;
-    uint8_t data[0];
-};
-
-struct NetQueue {
-    NetPacketDeliver *deliver;
-    NetPacketDeliverIOV *deliver_iov;
-    void *opaque;
-
-    QTAILQ_HEAD(packets, NetPacket) packets;
-
-    unsigned delivering : 1;
-};
-
-NetQueue *qemu_new_net_queue(NetPacketDeliver *deliver,
-                             NetPacketDeliverIOV *deliver_iov,
-                             void *opaque)
-{
-    NetQueue *queue;
-
-    queue = qemu_mallocz(sizeof(NetQueue));
-
-    queue->deliver = deliver;
-    queue->deliver_iov = deliver_iov;
-    queue->opaque = opaque;
-
-    QTAILQ_INIT(&queue->packets);
-
-    queue->delivering = 0;
-
-    return queue;
-}
-
-void qemu_del_net_queue(NetQueue *queue)
-{
-    NetPacket *packet, *next;
-
-    QTAILQ_FOREACH_SAFE(packet, &queue->packets, entry, next) {
-        QTAILQ_REMOVE(&queue->packets, packet, entry);
-        qemu_free(packet);
-    }
-
-    qemu_free(queue);
-}
-
-static ssize_t qemu_net_queue_append(NetQueue *queue,
-                                     VLANClientState *sender,
-                                     unsigned flags,
-                                     const uint8_t *buf,
-                                     size_t size,
-                                     NetPacketSent *sent_cb)
-{
-    NetPacket *packet;
-
-    packet = qemu_malloc(sizeof(NetPacket) + size);
-    packet->sender = sender;
-    packet->flags = flags;
-    packet->size = size;
-    packet->sent_cb = sent_cb;
-    memcpy(packet->data, buf, size);
-
-    QTAILQ_INSERT_TAIL(&queue->packets, packet, entry);
-
-    return size;
-}
-
-static ssize_t qemu_net_queue_append_iov(NetQueue *queue,
-                                         VLANClientState *sender,
-                                         unsigned flags,
-                                         const struct iovec *iov,
-                                         int iovcnt,
-                                         NetPacketSent *sent_cb)
-{
-    NetPacket *packet;
-    size_t max_len = 0;
-    int i;
-
-    for (i = 0; i < iovcnt; i++) {
-        max_len += iov[i].iov_len;
-    }
-
-    packet = qemu_malloc(sizeof(NetPacket) + max_len);
-    packet->sender = sender;
-    packet->sent_cb = sent_cb;
-    packet->flags = flags;
-    packet->size = 0;
-
-    for (i = 0; i < iovcnt; i++) {
-        size_t len = iov[i].iov_len;
-
-        memcpy(packet->data + packet->size, iov[i].iov_base, len);
-        packet->size += len;
-    }
-
-    QTAILQ_INSERT_TAIL(&queue->packets, packet, entry);
-
-    return packet->size;
-}
-
-static ssize_t qemu_net_queue_deliver(NetQueue *queue,
-                                      VLANClientState *sender,
-                                      unsigned flags,
-                                      const uint8_t *data,
-                                      size_t size)
-{
-    ssize_t ret = -1;
-
-    queue->delivering = 1;
-    ret = queue->deliver(sender, flags, data, size, queue->opaque);
-    queue->delivering = 0;
-
-    return ret;
-}
-
-static ssize_t qemu_net_queue_deliver_iov(NetQueue *queue,
-                                          VLANClientState *sender,
-                                          unsigned flags,
-                                          const struct iovec *iov,
-                                          int iovcnt)
-{
-    ssize_t ret = -1;
-
-    queue->delivering = 1;
-    ret = queue->deliver_iov(sender, flags, iov, iovcnt, queue->opaque);
-    queue->delivering = 0;
-
-    return ret;
-}
-
-ssize_t qemu_net_queue_send(NetQueue *queue,
-                            VLANClientState *sender,
-                            unsigned flags,
-                            const uint8_t *data,
-                            size_t size,
-                            NetPacketSent *sent_cb)
-{
-    ssize_t ret;
-
-    if (queue->delivering) {
-        return qemu_net_queue_append(queue, sender, flags, data, size, NULL);
-    }
-
-    ret = qemu_net_queue_deliver(queue, sender, flags, data, size);
-    if (ret == 0 && sent_cb != NULL) {
-        qemu_net_queue_append(queue, sender, flags, data, size, sent_cb);
-        return 0;
-    }
-
-    qemu_net_queue_flush(queue);
-
-    return ret;
-}
-
-ssize_t qemu_net_queue_send_iov(NetQueue *queue,
-                                VLANClientState *sender,
-                                unsigned flags,
-                                const struct iovec *iov,
-                                int iovcnt,
-                                NetPacketSent *sent_cb)
-{
-    ssize_t ret;
-
-    if (queue->delivering) {
-        return qemu_net_queue_append_iov(queue, sender, flags, iov, iovcnt, NULL);
-    }
-
-    ret = qemu_net_queue_deliver_iov(queue, sender, flags, iov, iovcnt);
-    if (ret == 0 && sent_cb != NULL) {
-        qemu_net_queue_append_iov(queue, sender, flags, iov, iovcnt, sent_cb);
-        return 0;
-    }
-
-    qemu_net_queue_flush(queue);
-
-    return ret;
-}
-
-void qemu_net_queue_purge(NetQueue *queue, VLANClientState *from)
-{
-    NetPacket *packet, *next;
-
-    QTAILQ_FOREACH_SAFE(packet, &queue->packets, entry, next) {
-        if (packet->sender == from) {
-            QTAILQ_REMOVE(&queue->packets, packet, entry);
-            qemu_free(packet);
-        }
-    }
-}
-
-void qemu_net_queue_flush(NetQueue *queue)
-{
-    while (!QTAILQ_EMPTY(&queue->packets)) {
-        NetPacket *packet;
-        int ret;
-
-        packet = QTAILQ_FIRST(&queue->packets);
-        QTAILQ_REMOVE(&queue->packets, packet, entry);
-
-        ret = qemu_net_queue_deliver(queue,
-                                     packet->sender,
-                                     packet->flags,
-                                     packet->data,
-                                     packet->size);
-        if (ret == 0 && packet->sent_cb != NULL) {
-            QTAILQ_INSERT_HEAD(&queue->packets, packet, entry);
-            break;
-        }
-
-        if (packet->sent_cb) {
-            packet->sent_cb(packet->sender, ret);
-        }
-
-        qemu_free(packet);
-    }
-}
diff --git a/net-queue.h b/net-queue.h
deleted file mode 100644
index a31958e..0000000
--- a/net-queue.h
+++ /dev/null
@@ -1,71 +0,0 @@ 
-/*
- * Copyright (c) 2003-2008 Fabrice Bellard
- * Copyright (c) 2009 Red Hat, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#ifndef QEMU_NET_QUEUE_H
-#define QEMU_NET_QUEUE_H
-
-#include "qemu-common.h"
-
-typedef struct NetPacket NetPacket;
-typedef struct NetQueue NetQueue;
-
-typedef void (NetPacketSent) (VLANClientState *sender, ssize_t ret);
-
-typedef ssize_t (NetPacketDeliver) (VLANClientState *sender,
-                                    unsigned flags,
-                                    const uint8_t *buf,
-                                    size_t size,
-                                    void *opaque);
-
-typedef ssize_t (NetPacketDeliverIOV) (VLANClientState *sender,
-                                       unsigned flags,
-                                       const struct iovec *iov,
-                                       int iovcnt,
-                                       void *opaque);
-
-#define QEMU_NET_PACKET_FLAG_NONE  0
-#define QEMU_NET_PACKET_FLAG_RAW  (1<<0)
-
-NetQueue *qemu_new_net_queue(NetPacketDeliver *deliver,
-                             NetPacketDeliverIOV *deliver_iov,
-                             void *opaque);
-void qemu_del_net_queue(NetQueue *queue);
-
-ssize_t qemu_net_queue_send(NetQueue *queue,
-                            VLANClientState *sender,
-                            unsigned flags,
-                            const uint8_t *data,
-                            size_t size,
-                            NetPacketSent *sent_cb);
-
-ssize_t qemu_net_queue_send_iov(NetQueue *queue,
-                                VLANClientState *sender,
-                                unsigned flags,
-                                const struct iovec *iov,
-                                int iovcnt,
-                                NetPacketSent *sent_cb);
-
-void qemu_net_queue_purge(NetQueue *queue, VLANClientState *from);
-void qemu_net_queue_flush(NetQueue *queue);
-
-#endif /* QEMU_NET_QUEUE_H */
diff --git a/net.h b/net.h
index 7e6cbf4..9ebb978 100644
--- a/net.h
+++ b/net.h
@@ -5,7 +5,7 @@ 
 #include "qemu-common.h"
 #include "qdict.h"
 #include "qemu-option.h"
-#include "net-queue.h"
+#include "net/queue.h"
 
 /* VLANs support */
 
diff --git a/net/queue.c b/net/queue.c
new file mode 100644
index 0000000..e91a9a5
--- /dev/null
+++ b/net/queue.c
@@ -0,0 +1,260 @@ 
+/*
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ * Copyright (c) 2009 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "net/queue.h"
+#include "qemu-queue.h"
+
+/* The delivery handler may only return zero if it will call
+ * qemu_net_queue_flush() when it determines that it is once again able
+ * to deliver packets. It must also call qemu_net_queue_purge() in its
+ * cleanup path.
+ *
+ * If a sent callback is provided to send(), the caller must handle a
+ * zero return from the delivery handler by not sending any more packets
+ * until we have invoked the callback. Only in that case will we queue
+ * the packet.
+ *
+ * If a sent callback isn't provided, we just drop the packet to avoid
+ * unbounded queueing.
+ */
+
+struct NetPacket {
+    QTAILQ_ENTRY(NetPacket) entry;
+    VLANClientState *sender;
+    unsigned flags;
+    int size;
+    NetPacketSent *sent_cb;
+    uint8_t data[0];
+};
+
+struct NetQueue {
+    NetPacketDeliver *deliver;
+    NetPacketDeliverIOV *deliver_iov;
+    void *opaque;
+
+    QTAILQ_HEAD(packets, NetPacket) packets;
+
+    unsigned delivering : 1;
+};
+
+NetQueue *qemu_new_net_queue(NetPacketDeliver *deliver,
+                             NetPacketDeliverIOV *deliver_iov,
+                             void *opaque)
+{
+    NetQueue *queue;
+
+    queue = qemu_mallocz(sizeof(NetQueue));
+
+    queue->deliver = deliver;
+    queue->deliver_iov = deliver_iov;
+    queue->opaque = opaque;
+
+    QTAILQ_INIT(&queue->packets);
+
+    queue->delivering = 0;
+
+    return queue;
+}
+
+void qemu_del_net_queue(NetQueue *queue)
+{
+    NetPacket *packet, *next;
+
+    QTAILQ_FOREACH_SAFE(packet, &queue->packets, entry, next) {
+        QTAILQ_REMOVE(&queue->packets, packet, entry);
+        qemu_free(packet);
+    }
+
+    qemu_free(queue);
+}
+
+static ssize_t qemu_net_queue_append(NetQueue *queue,
+                                     VLANClientState *sender,
+                                     unsigned flags,
+                                     const uint8_t *buf,
+                                     size_t size,
+                                     NetPacketSent *sent_cb)
+{
+    NetPacket *packet;
+
+    packet = qemu_malloc(sizeof(NetPacket) + size);
+    packet->sender = sender;
+    packet->flags = flags;
+    packet->size = size;
+    packet->sent_cb = sent_cb;
+    memcpy(packet->data, buf, size);
+
+    QTAILQ_INSERT_TAIL(&queue->packets, packet, entry);
+
+    return size;
+}
+
+static ssize_t qemu_net_queue_append_iov(NetQueue *queue,
+                                         VLANClientState *sender,
+                                         unsigned flags,
+                                         const struct iovec *iov,
+                                         int iovcnt,
+                                         NetPacketSent *sent_cb)
+{
+    NetPacket *packet;
+    size_t max_len = 0;
+    int i;
+
+    for (i = 0; i < iovcnt; i++) {
+        max_len += iov[i].iov_len;
+    }
+
+    packet = qemu_malloc(sizeof(NetPacket) + max_len);
+    packet->sender = sender;
+    packet->sent_cb = sent_cb;
+    packet->flags = flags;
+    packet->size = 0;
+
+    for (i = 0; i < iovcnt; i++) {
+        size_t len = iov[i].iov_len;
+
+        memcpy(packet->data + packet->size, iov[i].iov_base, len);
+        packet->size += len;
+    }
+
+    QTAILQ_INSERT_TAIL(&queue->packets, packet, entry);
+
+    return packet->size;
+}
+
+static ssize_t qemu_net_queue_deliver(NetQueue *queue,
+                                      VLANClientState *sender,
+                                      unsigned flags,
+                                      const uint8_t *data,
+                                      size_t size)
+{
+    ssize_t ret = -1;
+
+    queue->delivering = 1;
+    ret = queue->deliver(sender, flags, data, size, queue->opaque);
+    queue->delivering = 0;
+
+    return ret;
+}
+
+static ssize_t qemu_net_queue_deliver_iov(NetQueue *queue,
+                                          VLANClientState *sender,
+                                          unsigned flags,
+                                          const struct iovec *iov,
+                                          int iovcnt)
+{
+    ssize_t ret = -1;
+
+    queue->delivering = 1;
+    ret = queue->deliver_iov(sender, flags, iov, iovcnt, queue->opaque);
+    queue->delivering = 0;
+
+    return ret;
+}
+
+ssize_t qemu_net_queue_send(NetQueue *queue,
+                            VLANClientState *sender,
+                            unsigned flags,
+                            const uint8_t *data,
+                            size_t size,
+                            NetPacketSent *sent_cb)
+{
+    ssize_t ret;
+
+    if (queue->delivering) {
+        return qemu_net_queue_append(queue, sender, flags, data, size, NULL);
+    }
+
+    ret = qemu_net_queue_deliver(queue, sender, flags, data, size);
+    if (ret == 0 && sent_cb != NULL) {
+        qemu_net_queue_append(queue, sender, flags, data, size, sent_cb);
+        return 0;
+    }
+
+    qemu_net_queue_flush(queue);
+
+    return ret;
+}
+
+ssize_t qemu_net_queue_send_iov(NetQueue *queue,
+                                VLANClientState *sender,
+                                unsigned flags,
+                                const struct iovec *iov,
+                                int iovcnt,
+                                NetPacketSent *sent_cb)
+{
+    ssize_t ret;
+
+    if (queue->delivering) {
+        return qemu_net_queue_append_iov(queue, sender, flags, iov, iovcnt, NULL);
+    }
+
+    ret = qemu_net_queue_deliver_iov(queue, sender, flags, iov, iovcnt);
+    if (ret == 0 && sent_cb != NULL) {
+        qemu_net_queue_append_iov(queue, sender, flags, iov, iovcnt, sent_cb);
+        return 0;
+    }
+
+    qemu_net_queue_flush(queue);
+
+    return ret;
+}
+
+void qemu_net_queue_purge(NetQueue *queue, VLANClientState *from)
+{
+    NetPacket *packet, *next;
+
+    QTAILQ_FOREACH_SAFE(packet, &queue->packets, entry, next) {
+        if (packet->sender == from) {
+            QTAILQ_REMOVE(&queue->packets, packet, entry);
+            qemu_free(packet);
+        }
+    }
+}
+
+void qemu_net_queue_flush(NetQueue *queue)
+{
+    while (!QTAILQ_EMPTY(&queue->packets)) {
+        NetPacket *packet;
+        int ret;
+
+        packet = QTAILQ_FIRST(&queue->packets);
+        QTAILQ_REMOVE(&queue->packets, packet, entry);
+
+        ret = qemu_net_queue_deliver(queue,
+                                     packet->sender,
+                                     packet->flags,
+                                     packet->data,
+                                     packet->size);
+        if (ret == 0 && packet->sent_cb != NULL) {
+            QTAILQ_INSERT_HEAD(&queue->packets, packet, entry);
+            break;
+        }
+
+        if (packet->sent_cb) {
+            packet->sent_cb(packet->sender, ret);
+        }
+
+        qemu_free(packet);
+    }
+}
diff --git a/net/queue.h b/net/queue.h
new file mode 100644
index 0000000..a31958e
--- /dev/null
+++ b/net/queue.h
@@ -0,0 +1,71 @@ 
+/*
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ * Copyright (c) 2009 Red Hat, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef QEMU_NET_QUEUE_H
+#define QEMU_NET_QUEUE_H
+
+#include "qemu-common.h"
+
+typedef struct NetPacket NetPacket;
+typedef struct NetQueue NetQueue;
+
+typedef void (NetPacketSent) (VLANClientState *sender, ssize_t ret);
+
+typedef ssize_t (NetPacketDeliver) (VLANClientState *sender,
+                                    unsigned flags,
+                                    const uint8_t *buf,
+                                    size_t size,
+                                    void *opaque);
+
+typedef ssize_t (NetPacketDeliverIOV) (VLANClientState *sender,
+                                       unsigned flags,
+                                       const struct iovec *iov,
+                                       int iovcnt,
+                                       void *opaque);
+
+#define QEMU_NET_PACKET_FLAG_NONE  0
+#define QEMU_NET_PACKET_FLAG_RAW  (1<<0)
+
+NetQueue *qemu_new_net_queue(NetPacketDeliver *deliver,
+                             NetPacketDeliverIOV *deliver_iov,
+                             void *opaque);
+void qemu_del_net_queue(NetQueue *queue);
+
+ssize_t qemu_net_queue_send(NetQueue *queue,
+                            VLANClientState *sender,
+                            unsigned flags,
+                            const uint8_t *data,
+                            size_t size,
+                            NetPacketSent *sent_cb);
+
+ssize_t qemu_net_queue_send_iov(NetQueue *queue,
+                                VLANClientState *sender,
+                                unsigned flags,
+                                const struct iovec *iov,
+                                int iovcnt,
+                                NetPacketSent *sent_cb);
+
+void qemu_net_queue_purge(NetQueue *queue, VLANClientState *from);
+void qemu_net_queue_flush(NetQueue *queue);
+
+#endif /* QEMU_NET_QUEUE_H */