640b8a1c58
This allows external vhost-net devices to modify the state of the VirtIO device model once the vhost-vdpa device has acknowledged the control commands. Signed-off-by: Eugenio Pérez <eperezma@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
232 lines
6.4 KiB
C
232 lines
6.4 KiB
C
/*
|
|
* Virtio Network Device
|
|
*
|
|
* Copyright IBM, Corp. 2007
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
*
|
|
* 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 "qemu/units.h"
|
|
#include "standard-headers/linux/virtio_net.h"
|
|
#include "hw/virtio/virtio.h"
|
|
#include "net/announce.h"
|
|
#include "qemu/option_int.h"
|
|
#include "qom/object.h"
|
|
|
|
#include "ebpf/ebpf_rss.h"
|
|
|
|
#define TYPE_VIRTIO_NET "virtio-net-device"
|
|
OBJECT_DECLARE_SIMPLE_TYPE(VirtIONet, 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
|
|
|
|
/* Maximum VIRTIO_NET_CTRL_MAC_TABLE_SET unicast + multicast entries. */
|
|
#define MAC_TABLE_ENTRIES 64
|
|
|
|
typedef struct virtio_net_conf
|
|
{
|
|
uint32_t txtimer;
|
|
int32_t txburst;
|
|
char *tx;
|
|
uint16_t rx_queue_size;
|
|
uint16_t tx_queue_size;
|
|
uint16_t mtu;
|
|
int32_t speed;
|
|
char *duplex_str;
|
|
uint8_t duplex;
|
|
char *primary_id_str;
|
|
} virtio_net_conf;
|
|
|
|
/* Coalesced packets type & status */
|
|
typedef enum {
|
|
RSC_COALESCE, /* Data been coalesced */
|
|
RSC_FINAL, /* Will terminate current connection */
|
|
RSC_NO_MATCH, /* No matched in the buffer pool */
|
|
RSC_BYPASS, /* Packet to be bypass, not tcp, tcp ctrl, etc */
|
|
RSC_CANDIDATE /* Data want to be coalesced */
|
|
} CoalesceStatus;
|
|
|
|
typedef struct VirtioNetRscStat {
|
|
uint32_t received;
|
|
uint32_t coalesced;
|
|
uint32_t over_size;
|
|
uint32_t cache;
|
|
uint32_t empty_cache;
|
|
uint32_t no_match_cache;
|
|
uint32_t win_update;
|
|
uint32_t no_match;
|
|
uint32_t tcp_syn;
|
|
uint32_t tcp_ctrl_drain;
|
|
uint32_t dup_ack;
|
|
uint32_t dup_ack1;
|
|
uint32_t dup_ack2;
|
|
uint32_t pure_ack;
|
|
uint32_t ack_out_of_win;
|
|
uint32_t data_out_of_win;
|
|
uint32_t data_out_of_order;
|
|
uint32_t data_after_pure_ack;
|
|
uint32_t bypass_not_tcp;
|
|
uint32_t tcp_option;
|
|
uint32_t tcp_all_opt;
|
|
uint32_t ip_frag;
|
|
uint32_t ip_ecn;
|
|
uint32_t ip_hacked;
|
|
uint32_t ip_option;
|
|
uint32_t purge_failed;
|
|
uint32_t drain_failed;
|
|
uint32_t final_failed;
|
|
int64_t timer;
|
|
} VirtioNetRscStat;
|
|
|
|
/* Rsc unit general info used to checking if can coalescing */
|
|
typedef struct VirtioNetRscUnit {
|
|
void *ip; /* ip header */
|
|
uint16_t *ip_plen; /* data len pointer in ip header field */
|
|
struct tcp_header *tcp; /* tcp header */
|
|
uint16_t tcp_hdrlen; /* tcp header len */
|
|
uint16_t payload; /* pure payload without virtio/eth/ip/tcp */
|
|
} VirtioNetRscUnit;
|
|
|
|
/* Coalesced segment */
|
|
typedef struct VirtioNetRscSeg {
|
|
QTAILQ_ENTRY(VirtioNetRscSeg) next;
|
|
void *buf;
|
|
size_t size;
|
|
uint16_t packets;
|
|
uint16_t dup_ack;
|
|
bool is_coalesced; /* need recal ipv4 header checksum, mark here */
|
|
VirtioNetRscUnit unit;
|
|
NetClientState *nc;
|
|
} VirtioNetRscSeg;
|
|
|
|
|
|
/* Chain is divided by protocol(ipv4/v6) and NetClientInfo */
|
|
typedef struct VirtioNetRscChain {
|
|
QTAILQ_ENTRY(VirtioNetRscChain) next;
|
|
VirtIONet *n; /* VirtIONet */
|
|
uint16_t proto;
|
|
uint8_t gso_type;
|
|
uint16_t max_payload;
|
|
QEMUTimer *drain_timer;
|
|
QTAILQ_HEAD(, VirtioNetRscSeg) buffers;
|
|
VirtioNetRscStat stat;
|
|
} VirtioNetRscChain;
|
|
|
|
/* Maximum packet size we can receive from tap device: header + 64k */
|
|
#define VIRTIO_NET_MAX_BUFSIZE (sizeof(struct virtio_net_hdr) + (64 * KiB))
|
|
|
|
#define VIRTIO_NET_RSS_MAX_KEY_SIZE 40
|
|
#define VIRTIO_NET_RSS_MAX_TABLE_LEN 128
|
|
|
|
typedef struct VirtioNetRssData {
|
|
bool enabled;
|
|
bool enabled_software_rss;
|
|
bool redirect;
|
|
bool populate_hash;
|
|
uint32_t hash_types;
|
|
uint8_t key[VIRTIO_NET_RSS_MAX_KEY_SIZE];
|
|
uint16_t indirections_len;
|
|
uint16_t *indirections_table;
|
|
uint16_t default_queue;
|
|
} VirtioNetRssData;
|
|
|
|
typedef struct VirtIONetQueue {
|
|
VirtQueue *rx_vq;
|
|
VirtQueue *tx_vq;
|
|
QEMUTimer *tx_timer;
|
|
QEMUBH *tx_bh;
|
|
uint32_t tx_waiting;
|
|
struct {
|
|
VirtQueueElement *elem;
|
|
} async_tx;
|
|
struct VirtIONet *n;
|
|
} VirtIONetQueue;
|
|
|
|
struct VirtIONet {
|
|
VirtIODevice parent_obj;
|
|
uint8_t mac[ETH_ALEN];
|
|
uint16_t status;
|
|
VirtIONetQueue *vqs;
|
|
VirtQueue *ctrl_vq;
|
|
NICState *nic;
|
|
/* RSC Chains - temporary storage of coalesced data,
|
|
all these data are lost in case of migration */
|
|
QTAILQ_HEAD(, VirtioNetRscChain) rsc_chains;
|
|
uint32_t tx_timeout;
|
|
int32_t tx_burst;
|
|
uint32_t has_vnet_hdr;
|
|
size_t host_hdr_len;
|
|
size_t guest_hdr_len;
|
|
uint64_t host_features;
|
|
uint32_t rsc_timeout;
|
|
uint8_t rsc4_enabled;
|
|
uint8_t rsc6_enabled;
|
|
uint8_t has_ufo;
|
|
uint32_t 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_queue_pairs;
|
|
uint16_t curr_queue_pairs;
|
|
uint16_t max_ncs;
|
|
size_t config_size;
|
|
char *netclient_name;
|
|
char *netclient_type;
|
|
uint64_t curr_guest_offloads;
|
|
/* used on saved state restore phase to preserve the curr_guest_offloads */
|
|
uint64_t saved_guest_offloads;
|
|
AnnounceTimer announce_timer;
|
|
bool needs_vnet_hdr_swap;
|
|
bool mtu_bypass_backend;
|
|
/* primary failover device is hidden*/
|
|
bool failover_primary_hidden;
|
|
bool failover;
|
|
DeviceListener primary_listener;
|
|
QDict *primary_opts;
|
|
bool primary_opts_from_json;
|
|
Notifier migration_state;
|
|
VirtioNetRssData rss_data;
|
|
struct NetRxPkt *rx_pkt;
|
|
struct EBPFRSSContext ebpf_rss;
|
|
};
|
|
|
|
size_t virtio_net_handle_ctrl_iov(VirtIODevice *vdev,
|
|
const struct iovec *in_sg, unsigned in_num,
|
|
const struct iovec *out_sg,
|
|
unsigned out_num);
|
|
void virtio_net_set_netclient_name(VirtIONet *n, const char *name,
|
|
const char *type);
|
|
|
|
#endif
|