diff options
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/filter.h | 77 | ||||
| -rw-r--r-- | include/net/net.h | 6 | ||||
| -rw-r--r-- | include/net/queue.h | 20 |
3 files changed, 97 insertions, 6 deletions
diff --git a/include/net/filter.h b/include/net/filter.h new file mode 100644 index 0000000000..2deda362a6 --- /dev/null +++ b/include/net/filter.h @@ -0,0 +1,77 @@ +/* + * Copyright (c) 2015 FUJITSU LIMITED + * Author: Yang Hongyang <yanghy@cn.fujitsu.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * later. See the COPYING file in the top-level directory. + */ + +#ifndef QEMU_NET_FILTER_H +#define QEMU_NET_FILTER_H + +#include "qom/object.h" +#include "qemu-common.h" +#include "qemu/typedefs.h" +#include "net/queue.h" + +#define TYPE_NETFILTER "netfilter" +#define NETFILTER(obj) \ + OBJECT_CHECK(NetFilterState, (obj), TYPE_NETFILTER) +#define NETFILTER_GET_CLASS(obj) \ + OBJECT_GET_CLASS(NetFilterClass, (obj), TYPE_NETFILTER) +#define NETFILTER_CLASS(klass) \ + OBJECT_CLASS_CHECK(NetFilterClass, (klass), TYPE_NETFILTER) + +typedef void (FilterSetup) (NetFilterState *nf, Error **errp); +typedef void (FilterCleanup) (NetFilterState *nf); +/* + * Return: + * 0: finished handling the packet, we should continue + * size: filter stolen this packet, we stop pass this packet further + */ +typedef ssize_t (FilterReceiveIOV)(NetFilterState *nc, + NetClientState *sender, + unsigned flags, + const struct iovec *iov, + int iovcnt, + NetPacketSent *sent_cb); + +typedef struct NetFilterClass { + ObjectClass parent_class; + + /* optional */ + FilterSetup *setup; + FilterCleanup *cleanup; + /* mandatory */ + FilterReceiveIOV *receive_iov; +} NetFilterClass; + + +struct NetFilterState { + /* private */ + Object parent; + + /* protected */ + char *netdev_id; + NetClientState *netdev; + NetFilterDirection direction; + char info_str[256]; + QTAILQ_ENTRY(NetFilterState) next; +}; + +ssize_t qemu_netfilter_receive(NetFilterState *nf, + NetFilterDirection direction, + NetClientState *sender, + unsigned flags, + const struct iovec *iov, + int iovcnt, + NetPacketSent *sent_cb); + +/* pass the packet to the next filter */ +ssize_t qemu_netfilter_pass_to_next(NetClientState *sender, + unsigned flags, + const struct iovec *iov, + int iovcnt, + void *opaque); + +#endif /* QEMU_NET_FILTER_H */ diff --git a/include/net/net.h b/include/net/net.h index 6a6cbef24a..7af3e15f83 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -92,6 +92,7 @@ struct NetClientState { NetClientDestructor *destructor; unsigned int queue_index; unsigned rxfilter_notify_enabled:1; + QTAILQ_HEAD(, NetFilterState) filters; }; typedef struct NICState { @@ -151,11 +152,6 @@ void qemu_check_nic_model(NICInfo *nd, const char *model); int qemu_find_nic_model(NICInfo *nd, const char * const *models, const char *default_model); -ssize_t qemu_deliver_packet(NetClientState *sender, - unsigned flags, - const uint8_t *data, - size_t size, - void *opaque); ssize_t qemu_deliver_packet_iov(NetClientState *sender, unsigned flags, const struct iovec *iov, diff --git a/include/net/queue.h b/include/net/queue.h index fc02b33915..5469fdbeaa 100644 --- a/include/net/queue.h +++ b/include/net/queue.h @@ -34,7 +34,25 @@ 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_net_queue_append_iov(NetQueue *queue, + NetClientState *sender, + unsigned flags, + const struct iovec *iov, + int iovcnt, + NetPacketSent *sent_cb); void qemu_del_net_queue(NetQueue *queue); |