queue.h (3299B)
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 28 typedef struct NetPacket NetPacket; 29 typedef struct NetQueue NetQueue; 30 31 typedef void (NetPacketSent) (NetClientState *sender, ssize_t ret); 32 33 #define QEMU_NET_PACKET_FLAG_NONE 0 34 #define QEMU_NET_PACKET_FLAG_RAW (1<<0) 35 36 /* Returns: 37 * >0 - success 38 * 0 - queue packet for future redelivery 39 * <0 - failure (discard packet) 40 */ 41 typedef ssize_t (NetQueueDeliverFunc)(NetClientState *sender, 42 unsigned flags, 43 const struct iovec *iov, 44 int iovcnt, 45 void *opaque); 46 47 NetQueue *qemu_new_net_queue(NetQueueDeliverFunc *deliver, void *opaque); 48 49 void qemu_net_queue_append_iov(NetQueue *queue, 50 NetClientState *sender, 51 unsigned flags, 52 const struct iovec *iov, 53 int iovcnt, 54 NetPacketSent *sent_cb); 55 56 void qemu_del_net_queue(NetQueue *queue); 57 58 ssize_t qemu_net_queue_receive(NetQueue *queue, 59 const uint8_t *data, 60 size_t size); 61 62 ssize_t qemu_net_queue_receive_iov(NetQueue *queue, 63 const struct iovec *iov, 64 int iovcnt); 65 66 ssize_t qemu_net_queue_send(NetQueue *queue, 67 NetClientState *sender, 68 unsigned flags, 69 const uint8_t *data, 70 size_t size, 71 NetPacketSent *sent_cb); 72 73 ssize_t qemu_net_queue_send_iov(NetQueue *queue, 74 NetClientState *sender, 75 unsigned flags, 76 const struct iovec *iov, 77 int iovcnt, 78 NetPacketSent *sent_cb); 79 80 void qemu_net_queue_purge(NetQueue *queue, NetClientState *from); 81 bool qemu_net_queue_flush(NetQueue *queue); 82 83 #endif /* QEMU_NET_QUEUE_H */