/* * Virtio Network Device * * Copyright IBM, Corp. 2007 * * Authors: * Anthony Liguori * * This work is licensed under the terms of the GNU GPL, version 2. See * the COPYING file in the top-level directory. * */ #ifndef QEMU_VIRTIO_NET_H #define QEMU_VIRTIO_NET_H #include "standard-headers/linux/virtio_net.h" #include "hw/virtio/virtio.h" #define TYPE_VIRTIO_NET "virtio-net-device" #define VIRTIO_NET(obj) \ OBJECT_CHECK(VirtIONet, (obj), TYPE_VIRTIO_NET) #define TX_TIMER_INTERVAL 150000 /* 150 us */ /* Limit the number of packets that can be sent via a single flush * of the TX queue. This gives us a guaranteed exit condition and * ensures fairness in the io path. 256 conveniently matches the * length of the TX queue and shows a good balance of performance * and latency. */ #define TX_BURST 256 typedef struct virtio_net_conf { uint32_t txtimer; int32_t txburst; char *tx; uint16_t rx_queue_size; uint16_t mtu; } virtio_net_conf; /* Maximum packet size we can receive from tap device: header + 64k */ #define VIRTIO_NET_MAX_BUFSIZE (sizeof(struct virtio_net_hdr) + (64 << 10)) typedef struct VirtIONetQueue { VirtQueue *rx_vq; VirtQueue *tx_vq; QEMUTimer *tx_timer; QEMUBH *tx_bh; int tx_waiting; struct { VirtQueueElement *elem; } async_tx; struct VirtIONet *n; } VirtIONetQueue; typedef struct VirtIONet { VirtIODevice parent_obj; uint8_t mac[ETH_ALEN]; uint16_t status; VirtIONetQueue *vqs; VirtQueue *ctrl_vq; NICState *nic; uint32_t tx_timeout; int32_t tx_burst; uint32_t has_vnet_hdr; size_t host_hdr_len; size_t guest_hdr_len; uint32_t host_features; uint8_t has_ufo; int mergeable_rx_bufs; uint8_t promisc; uint8_t allmulti; uint8_t alluni; uint8_t nomulti; uint8_t nouni; uint8_t nobcast; uint8_t vhost_started; struct { uint32_t in_use; uint32_t first_multi; uint8_t multi_overflow; uint8_t uni_overflow; uint8_t *macs; } mac_table; uint32_t *vlans; virtio_net_conf net_conf; NICConf nic_conf; DeviceState *qdev; int multiqueue; uint16_t max_queues; uint16_t curr_queues; size_t config_size; char *netclient_name; char *netclient_type; uint64_t curr_guest_offloads; QEMUTimer *announce_timer; int announce_counter; bool needs_vnet_hdr_swap; } VirtIONet; void virtio_net_set_netclient_name(VirtIONet *n, const char *name, const char *type); #endif