9473939ed7
Although linkspeed and duplex can be set in a linux guest via 'ethtool -s', this requires custom ethtool commands for virtio-net by default. Introduce a new feature flag, VIRTIO_NET_F_SPEED_DUPLEX, which allows the hypervisor to export a linkspeed and duplex setting. The user can subsequently overwrite it later if desired via: 'ethtool -s'. Linkspeed and duplex settings can be set as: '-device virtio-net,speed=10000,duplex=full' where speed is [0...INT_MAX], and duplex is ["half"|"full"]. Signed-off-by: Jason Baron <jbaron@akamai.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Cc: virtio-dev@lists.oasis-open.org Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
111 lines
2.7 KiB
C
111 lines
2.7 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 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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uint16_t rx_queue_size;
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uint16_t tx_queue_size;
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uint16_t mtu;
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int32_t speed;
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char *duplex_str;
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uint8_t duplex;
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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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uint32_t tx_waiting;
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struct {
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VirtQueueElement *elem;
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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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uint64_t host_features;
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uint8_t has_ufo;
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uint32_t 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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bool needs_vnet_hdr_swap;
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bool mtu_bypass_backend;
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} VirtIONet;
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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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