net.h 6.1 KB
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#ifndef QEMU_NET_H
#define QEMU_NET_H

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#include "qemu-queue.h"
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#include "qemu-common.h"
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#include "qdict.h"
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#include "qemu-option.h"
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#include "net/queue.h"
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#include "vmstate.h"
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#include "qapi-types.h"
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struct MACAddr {
    uint8_t a[6];
};

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/* qdev nic properties */

typedef struct NICConf {
    MACAddr macaddr;
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    NetClientState *peer;
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    int32_t bootindex;
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} NICConf;

#define DEFINE_NIC_PROPERTIES(_state, _conf)                            \
    DEFINE_PROP_MACADDR("mac",   _state, _conf.macaddr),                \
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    DEFINE_PROP_VLAN("vlan",     _state, _conf.peer),                   \
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    DEFINE_PROP_NETDEV("netdev", _state, _conf.peer),                   \
    DEFINE_PROP_INT32("bootindex", _state, _conf.bootindex, -1)
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/* Net clients */
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typedef void (NetPoll)(NetClientState *, bool enable);
typedef int (NetCanReceive)(NetClientState *);
typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t);
typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int);
typedef void (NetCleanup) (NetClientState *);
typedef void (LinkStatusChanged)(NetClientState *);
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typedef struct NetClientInfo {
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    NetClientOptionsKind type;
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    size_t size;
    NetReceive *receive;
    NetReceive *receive_raw;
    NetReceiveIOV *receive_iov;
    NetCanReceive *can_receive;
    NetCleanup *cleanup;
    LinkStatusChanged *link_status_changed;
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    NetPoll *poll;
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} NetClientInfo;

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struct NetClientState {
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    NetClientInfo *info;
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    int link_down;
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    QTAILQ_ENTRY(NetClientState) next;
    NetClientState *peer;
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    NetQueue *send_queue;
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    char *model;
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    char *name;
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    char info_str[256];
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    unsigned receive_disabled : 1;
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};

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typedef struct NICState {
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    NetClientState nc;
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    NICConf *conf;
    void *opaque;
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    bool peer_deleted;
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} NICState;

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NetClientState *qemu_find_netdev(const char *id);
NetClientState *qemu_new_net_client(NetClientInfo *info,
                                    NetClientState *peer,
                                    const char *model,
                                    const char *name);
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NICState *qemu_new_nic(NetClientInfo *info,
                       NICConf *conf,
                       const char *model,
                       const char *name,
                       void *opaque);
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void qemu_del_net_client(NetClientState *nc);
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NetClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
                                              const char *client_str);
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typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
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int qemu_can_send_packet(NetClientState *nc);
ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov,
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                          int iovcnt);
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ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov,
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                                int iovcnt, NetPacketSent *sent_cb);
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void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size);
ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size);
ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf,
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                               int size, NetPacketSent *sent_cb);
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void qemu_purge_queued_packets(NetClientState *nc);
void qemu_flush_queued_packets(NetClientState *nc);
void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]);
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void qemu_macaddr_default_if_unset(MACAddr *macaddr);
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int qemu_show_nic_models(const char *arg, const char *const *models);
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void qemu_check_nic_model(NICInfo *nd, const char *model);
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int qemu_find_nic_model(NICInfo *nd, const char * const *models,
                        const char *default_model);
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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,
                            int iovcnt,
                            void *opaque);

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void print_net_client(Monitor *mon, NetClientState *nc);
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void do_info_network(Monitor *mon);
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/* NIC info */

#define MAX_NICS 8

struct NICInfo {
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    MACAddr macaddr;
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    char *model;
    char *name;
    char *devaddr;
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    NetClientState *netdev;
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    int used;         /* is this slot in nd_table[] being used? */
    int instantiated; /* does this NICInfo correspond to an instantiated NIC? */
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    int nvectors;
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};

extern int nb_nics;
extern NICInfo nd_table[MAX_NICS];
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extern int default_net;
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/* from net.c */
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extern const char *legacy_tftp_prefix;
extern const char *legacy_bootp_filename;

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int net_client_init(QemuOpts *opts, int is_netdev, Error **errp);
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int net_client_parse(QemuOptsList *opts_list, const char *str);
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int net_init_clients(void);
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void net_check_clients(void);
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void net_cleanup(void);
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void net_host_device_add(Monitor *mon, const QDict *qdict);
void net_host_device_remove(Monitor *mon, const QDict *qdict);
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void netdev_add(QemuOpts *opts, Error **errp);
int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret);
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int net_hub_id_for_client(NetClientState *nc, int *id);
NetClientState *net_hub_port_find(int hub_id);

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#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
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#define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
#define DEFAULT_BRIDGE_INTERFACE "br0"
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void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
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#define POLYNOMIAL 0x04c11db6
unsigned compute_mcast_idx(const uint8_t *ep);

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#define vmstate_offset_macaddr(_state, _field)                       \
    vmstate_offset_array(_state, _field.a, uint8_t,                \
                         sizeof(typeof_field(_state, _field)))

#define VMSTATE_MACADDR(_field, _state) {                            \
    .name       = (stringify(_field)),                               \
    .size       = sizeof(MACAddr),                                   \
    .info       = &vmstate_info_buffer,                              \
    .flags      = VMS_BUFFER,                                        \
    .offset     = vmstate_offset_macaddr(_state, _field),            \
}

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#endif