da3e8a2349
So far virtio-net-device can't expose host features to guest while using virtio-mmio because it doesn't set DEFINE_VIRTIO_NET_FEATURES on backend or transport. So the performance is low. The host features belong to the backend while virtio-net-pci, virtio-net-s390 and virtio-net-ccw set the DEFINE_VIRTIO_NET_FEATURES on transports. But they already have the ability to forward property accesses to the backend child. So if we move the host features to backends, it doesn't break the backwards compatibility for them and make host features work while using virtio-mmio. Here we move DEFINE_VIRTIO_NET_FEATURES to the backend virtio-net. The transports just sync the host features from backend. Meanwhile move virtio_net_set_config_size to virtio-net to make sure the config size is correct and don't expose it. Signed-off-by: Shannon Zhao <zhaoshenglong@huawei.com> Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
145 lines
5.0 KiB
C
145 lines
5.0 KiB
C
/*
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* Virtio Network Device
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*
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* Copyright IBM, Corp. 2007
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*
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* Authors:
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* Anthony Liguori <aliguori@us.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#ifndef _QEMU_VIRTIO_NET_H
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#define _QEMU_VIRTIO_NET_H
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#include "standard-headers/linux/virtio_net.h"
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#include "hw/virtio/virtio.h"
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#define TYPE_VIRTIO_NET "virtio-net-device"
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#define VIRTIO_NET(obj) \
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OBJECT_CHECK(VirtIONet, (obj), TYPE_VIRTIO_NET)
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#define VIRTIO_NET_F_CTRL_GUEST_OFFLOADS 2 /* Control channel offload
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* configuration support */
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#define TX_TIMER_INTERVAL 150000 /* 150 us */
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/* Limit the number of packets that can be sent via a single flush
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* of the TX queue. This gives us a guaranteed exit condition and
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* ensures fairness in the io path. 256 conveniently matches the
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* length of the TX queue and shows a good balance of performance
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* and latency. */
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#define TX_BURST 256
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typedef struct virtio_net_conf
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{
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uint32_t txtimer;
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int32_t txburst;
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char *tx;
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} virtio_net_conf;
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/* Maximum packet size we can receive from tap device: header + 64k */
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#define VIRTIO_NET_MAX_BUFSIZE (sizeof(struct virtio_net_hdr) + (64 << 10))
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typedef struct VirtIONetQueue {
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VirtQueue *rx_vq;
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VirtQueue *tx_vq;
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QEMUTimer *tx_timer;
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QEMUBH *tx_bh;
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int tx_waiting;
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struct {
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VirtQueueElement elem;
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ssize_t len;
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} async_tx;
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struct VirtIONet *n;
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} VirtIONetQueue;
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typedef struct VirtIONet {
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VirtIODevice parent_obj;
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uint8_t mac[ETH_ALEN];
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uint16_t status;
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VirtIONetQueue *vqs;
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VirtQueue *ctrl_vq;
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NICState *nic;
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uint32_t tx_timeout;
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int32_t tx_burst;
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uint32_t has_vnet_hdr;
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size_t host_hdr_len;
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size_t guest_hdr_len;
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uint32_t host_features;
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uint8_t has_ufo;
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int mergeable_rx_bufs;
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uint8_t promisc;
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uint8_t allmulti;
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uint8_t alluni;
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uint8_t nomulti;
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uint8_t nouni;
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uint8_t nobcast;
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uint8_t vhost_started;
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struct {
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uint32_t in_use;
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uint32_t first_multi;
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uint8_t multi_overflow;
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uint8_t uni_overflow;
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uint8_t *macs;
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} mac_table;
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uint32_t *vlans;
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virtio_net_conf net_conf;
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NICConf nic_conf;
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DeviceState *qdev;
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int multiqueue;
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uint16_t max_queues;
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uint16_t curr_queues;
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size_t config_size;
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char *netclient_name;
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char *netclient_type;
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uint64_t curr_guest_offloads;
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QEMUTimer *announce_timer;
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int announce_counter;
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} VirtIONet;
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/*
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* Control network offloads
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*
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* Dynamic offloads are available with the
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* VIRTIO_NET_F_CTRL_GUEST_OFFLOADS feature bit.
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*/
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#define VIRTIO_NET_CTRL_GUEST_OFFLOADS 5
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#define VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET 0
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#define DEFINE_VIRTIO_NET_FEATURES(_state, _field) \
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DEFINE_PROP_BIT("any_layout", _state, _field, VIRTIO_F_ANY_LAYOUT, true), \
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DEFINE_PROP_BIT("csum", _state, _field, VIRTIO_NET_F_CSUM, true), \
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DEFINE_PROP_BIT("guest_csum", _state, _field, VIRTIO_NET_F_GUEST_CSUM, true), \
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DEFINE_PROP_BIT("gso", _state, _field, VIRTIO_NET_F_GSO, true), \
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DEFINE_PROP_BIT("guest_tso4", _state, _field, VIRTIO_NET_F_GUEST_TSO4, true), \
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DEFINE_PROP_BIT("guest_tso6", _state, _field, VIRTIO_NET_F_GUEST_TSO6, true), \
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DEFINE_PROP_BIT("guest_ecn", _state, _field, VIRTIO_NET_F_GUEST_ECN, true), \
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DEFINE_PROP_BIT("guest_ufo", _state, _field, VIRTIO_NET_F_GUEST_UFO, true), \
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DEFINE_PROP_BIT("guest_announce", _state, _field, VIRTIO_NET_F_GUEST_ANNOUNCE, true), \
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DEFINE_PROP_BIT("host_tso4", _state, _field, VIRTIO_NET_F_HOST_TSO4, true), \
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DEFINE_PROP_BIT("host_tso6", _state, _field, VIRTIO_NET_F_HOST_TSO6, true), \
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DEFINE_PROP_BIT("host_ecn", _state, _field, VIRTIO_NET_F_HOST_ECN, true), \
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DEFINE_PROP_BIT("host_ufo", _state, _field, VIRTIO_NET_F_HOST_UFO, true), \
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DEFINE_PROP_BIT("mrg_rxbuf", _state, _field, VIRTIO_NET_F_MRG_RXBUF, true), \
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DEFINE_PROP_BIT("status", _state, _field, VIRTIO_NET_F_STATUS, true), \
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DEFINE_PROP_BIT("ctrl_vq", _state, _field, VIRTIO_NET_F_CTRL_VQ, true), \
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DEFINE_PROP_BIT("ctrl_rx", _state, _field, VIRTIO_NET_F_CTRL_RX, true), \
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DEFINE_PROP_BIT("ctrl_vlan", _state, _field, VIRTIO_NET_F_CTRL_VLAN, true), \
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DEFINE_PROP_BIT("ctrl_rx_extra", _state, _field, VIRTIO_NET_F_CTRL_RX_EXTRA, true), \
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DEFINE_PROP_BIT("ctrl_mac_addr", _state, _field, VIRTIO_NET_F_CTRL_MAC_ADDR, true), \
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DEFINE_PROP_BIT("ctrl_guest_offloads", _state, _field, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS, true), \
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DEFINE_PROP_BIT("mq", _state, _field, VIRTIO_NET_F_MQ, false)
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#define DEFINE_VIRTIO_NET_PROPERTIES(_state, _field) \
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DEFINE_PROP_UINT32("x-txtimer", _state, _field.txtimer, TX_TIMER_INTERVAL),\
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DEFINE_PROP_INT32("x-txburst", _state, _field.txburst, TX_BURST), \
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DEFINE_PROP_STRING("tx", _state, _field.tx)
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void virtio_net_set_netclient_name(VirtIONet *n, const char *name,
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const char *type);
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#endif
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