net/queue.h

   1 /*
   2  * Copyright (c) 2003-2008 Fabrice Bellard
   3  * Copyright (c) 2009 Red Hat, Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy
   6  * of this software and associated documentation files (the "Software"), to deal
   7  * in the Software without restriction, including without limitation the rights
   8  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   9  * copies of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  21  * THE SOFTWARE.
  22  */
  23
  24 #ifndef QEMU_NET_QUEUE_H
  25 #define QEMU_NET_QUEUE_H
  26
  27 #include "qemu-common.h"
  28
  29 typedef struct NetPacket NetPacket;
  30 typedef struct NetQueue NetQueue;
  31
  32 typedef void (NetPacketSent) (VLANClientState *sender, ssize_t ret);
  33
  34 typedef ssize_t (NetPacketDeliver) (VLANClientState *sender,
  35                                     unsigned flags,
  36                                     const uint8_t *buf,
  37                                     size_t size,
  38                                     void *opaque);
  39
  40 typedef ssize_t (NetPacketDeliverIOV) (VLANClientState *sender,
  41                                        unsigned flags,
  42                                        const struct iovec *iov,
  43                                        int iovcnt,
  44                                        void *opaque);
  45
  46 #define QEMU_NET_PACKET_FLAG_NONE  0
  47 #define QEMU_NET_PACKET_FLAG_RAW  (1<<0)
  48
  49 NetQueue *qemu_new_net_queue(NetPacketDeliver *deliver,
  50                              NetPacketDeliverIOV *deliver_iov,
  51                              void *opaque);
  52 void qemu_del_net_queue(NetQueue *queue);
  53
  54 ssize_t qemu_net_queue_send(NetQueue *queue,
  55                             VLANClientState *sender,
  56                             unsigned flags,
  57                             const uint8_t *data,
  58                             size_t size,
  59                             NetPacketSent *sent_cb);
  60
  61 ssize_t qemu_net_queue_send_iov(NetQueue *queue,
  62                                 VLANClientState *sender,
  63                                 unsigned flags,
  64                                 const struct iovec *iov,
  65                                 int iovcnt,
  66                                 NetPacketSent *sent_cb);
  67
  68 void qemu_net_queue_purge(NetQueue *queue, VLANClientState *from);
  69 void qemu_net_queue_flush(NetQueue *queue);
  70
  71 #endif /* QEMU_NET_QUEUE_H */