@@ -34,7 +34,18 @@ typedef void (NetPacketSent) (NetClientState *sender, ssize_t ret);
#define QEMU_NET_PACKET_FLAG_NONE 0
#define QEMU_NET_PACKET_FLAG_RAW (1<<0)
-NetQueue *qemu_new_net_queue(void *opaque);
+/* Returns:
+ * >0 - success
+ * 0 - queue packet for future redelivery
+ * <0 - failure (discard packet)
+ */
+typedef ssize_t (NetQueueDeliverFunc)(NetClientState *sender,
+ unsigned flags,
+ const struct iovec *iov,
+ int iovcnt,
+ void *opaque);
+
+NetQueue *qemu_new_net_queue(NetQueueDeliverFunc *deliver, void *opaque);
void qemu_del_net_queue(NetQueue *queue);
@@ -286,7 +286,7 @@ static void qemu_net_client_setup(NetClientState *nc,
}
QTAILQ_INSERT_TAIL(&net_clients, nc, next);
- nc->incoming_queue = qemu_new_net_queue(nc);
+ nc->incoming_queue = qemu_new_net_queue(qemu_deliver_packet_iov, nc);
nc->destructor = destructor;
QTAILQ_INIT(&nc->filters);
}
@@ -52,13 +52,14 @@ struct NetQueue {
void *opaque;
uint32_t nq_maxlen;
uint32_t nq_count;
+ NetQueueDeliverFunc *deliver;
QTAILQ_HEAD(packets, NetPacket) packets;
unsigned delivering : 1;
};
-NetQueue *qemu_new_net_queue(void *opaque)
+NetQueue *qemu_new_net_queue(NetQueueDeliverFunc *deliver, void *opaque)
{
NetQueue *queue;
@@ -67,6 +68,7 @@ NetQueue *qemu_new_net_queue(void *opaque)
queue->opaque = opaque;
queue->nq_maxlen = 10000;
queue->nq_count = 0;
+ queue->deliver = deliver;
QTAILQ_INIT(&queue->packets);
@@ -158,7 +160,7 @@ static ssize_t qemu_net_queue_deliver(NetQueue *queue,
};
queue->delivering = 1;
- ret = qemu_deliver_packet_iov(sender, flags, &iov, 1, queue->opaque);
+ ret = queue->deliver(sender, flags, &iov, 1, queue->opaque);
queue->delivering = 0;
return ret;
@@ -173,7 +175,7 @@ static ssize_t qemu_net_queue_deliver_iov(NetQueue *queue,
ssize_t ret = -1;
queue->delivering = 1;
- ret = qemu_deliver_packet_iov(sender, flags, iov, iovcnt, queue->opaque);
+ ret = queue->deliver(sender, flags, iov, iovcnt, queue->opaque);
queue->delivering = 0;
return ret;
net/queue.c has logic to send/queue/flush packets but a qemu_deliver_packet_iov() call is hardcoded. Abstract this func so that we can use our own deliver function in netfilter. Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com> Cc: Stefan Hajnoczi <stefanha@redhat.com> --- include/net/queue.h | 13 ++++++++++++- net/net.c | 2 +- net/queue.c | 8 +++++--- 3 files changed, 18 insertions(+), 5 deletions(-)