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