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net/queue: introduce NetQueueDeliverFunc

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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>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Yang Hongyang 2015-10-07 11:52:17 +08:00 • committed by Jason Wang
parent fefe2a78ab
commit 3e033a46a7
3 changed files with 18 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

13
include/net/queue.h
View file

@ -34,7 +34,18 @@ typedef void (NetPacketSent) (NetClientState *sender, ssize_t ret);
#define QEMU_NET_PACKET_FLAG_NONE 0 #define QEMU_NET_PACKET_FLAG_NONE 0
#define QEMU_NET_PACKET_FLAG_RAW (1<<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); void qemu_del_net_queue(NetQueue *queue);

2
net/net.c
View file

@ -286,7 +286,7 @@ static void qemu_net_client_setup(NetClientState *nc,
} }
QTAILQ_INSERT_TAIL(&net_clients, nc, next); 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; nc->destructor = destructor;
QTAILQ_INIT(&nc->filters); QTAILQ_INIT(&nc->filters);
} }

8
net/queue.c
View file

@ -52,13 +52,14 @@ struct NetQueue {
void *opaque; void *opaque;
uint32_t nq_maxlen; uint32_t nq_maxlen;
uint32_t nq_count; uint32_t nq_count;
NetQueueDeliverFunc *deliver;
QTAILQ_HEAD(packets, NetPacket) packets; QTAILQ_HEAD(packets, NetPacket) packets;
unsigned delivering : 1; unsigned delivering : 1;
}; };
NetQueue *qemu_new_net_queue(void *opaque) NetQueue *qemu_new_net_queue(NetQueueDeliverFunc *deliver, void *opaque)
{ {
NetQueue *queue; NetQueue *queue;
@ -67,6 +68,7 @@ NetQueue *qemu_new_net_queue(void *opaque)
queue->opaque = opaque; queue->opaque = opaque;
queue->nq_maxlen = 10000; queue->nq_maxlen = 10000;
queue->nq_count = 0; queue->nq_count = 0;
queue->deliver = deliver;
QTAILQ_INIT(&queue->packets); QTAILQ_INIT(&queue->packets);
@ -158,7 +160,7 @@ static ssize_t qemu_net_queue_deliver(NetQueue *queue,
}; };
queue->delivering = 1; 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; queue->delivering = 0;
return ret; return ret;
@ -173,7 +175,7 @@ static ssize_t qemu_net_queue_deliver_iov(NetQueue *queue,
ssize_t ret = -1; ssize_t ret = -1;
queue->delivering = 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; queue->delivering = 0;
return ret; return ret;