net.h

   1 #ifndef QEMU_NET_H
   2 #define QEMU_NET_H
   3
   4 #include "qemu-queue.h"
   5 #include "qemu-common.h"
   6 #include "qdict.h"
   7 #include "qemu-option.h"
   8 #include "net/queue.h"
   9 #include "vmstate.h"
  10
  11 struct MACAddr {
  12     uint8_t a[6];
  13 };
  14
  15 /* qdev nic properties */
  16
  17 typedef struct NICConf {
  18     MACAddr macaddr;
  19     VLANState *vlan;
  20     VLANClientState *peer;
  21     int32_t bootindex;
  22 } NICConf;
  23
  24 #define DEFINE_NIC_PROPERTIES(_state, _conf)                            \
  25     DEFINE_PROP_MACADDR("mac",   _state, _conf.macaddr),                \
  26     DEFINE_PROP_VLAN("vlan",     _state, _conf.vlan),                   \
  27     DEFINE_PROP_NETDEV("netdev", _state, _conf.peer),                   \
  28     DEFINE_PROP_INT32("bootindex", _state, _conf.bootindex, -1)
  29
  30 /* VLANs support */
  31
  32 typedef enum {
  33     NET_CLIENT_TYPE_NONE,
  34     NET_CLIENT_TYPE_NIC,
  35     NET_CLIENT_TYPE_USER,
  36     NET_CLIENT_TYPE_TAP,
  37     NET_CLIENT_TYPE_SOCKET,
  38     NET_CLIENT_TYPE_VDE,
  39     NET_CLIENT_TYPE_DUMP,
  40
  41     NET_CLIENT_TYPE_MAX
  42 } net_client_type;
  43
  44 typedef void (NetPoll)(VLANClientState *, bool enable);
  45 typedef int (NetCanReceive)(VLANClientState *);
  46 typedef ssize_t (NetReceive)(VLANClientState *, const uint8_t *, size_t);
  47 typedef ssize_t (NetReceiveIOV)(VLANClientState *, const struct iovec *, int);
  48 typedef void (NetCleanup) (VLANClientState *);
  49 typedef void (LinkStatusChanged)(VLANClientState *);
  50
  51 typedef struct NetClientInfo {
  52     net_client_type type;
  53     size_t size;
  54     NetReceive *receive;
  55     NetReceive *receive_raw;
  56     NetReceiveIOV *receive_iov;
  57     NetCanReceive *can_receive;
  58     NetCleanup *cleanup;
  59     LinkStatusChanged *link_status_changed;
  60     NetPoll *poll;
  61 } NetClientInfo;
  62
  63 struct VLANClientState {
  64     NetClientInfo *info;
  65     int link_down;
  66     QTAILQ_ENTRY(VLANClientState) next;
  67     struct VLANState *vlan;
  68     VLANClientState *peer;
  69     NetQueue *send_queue;
  70     char *model;
  71     char *name;
  72     char info_str[256];
  73     unsigned receive_disabled : 1;
  74 };
  75
  76 typedef struct NICState {
  77     VLANClientState nc;
  78     NICConf *conf;
  79     void *opaque;
  80     bool peer_deleted;
  81 } NICState;
  82
  83 struct VLANState {
  84     int id;
  85     QTAILQ_HEAD(, VLANClientState) clients;
  86     QTAILQ_ENTRY(VLANState) next;
  87     NetQueue *send_queue;
  88 };
  89
  90 VLANState *qemu_find_vlan(int id, int allocate);
  91 VLANClientState *qemu_find_netdev(const char *id);
  92 VLANClientState *qemu_new_net_client(NetClientInfo *info,
  93                                      VLANState *vlan,
  94                                      VLANClientState *peer,
  95                                      const char *model,
  96                                      const char *name);
  97 NICState *qemu_new_nic(NetClientInfo *info,
  98                        NICConf *conf,
  99                        const char *model,
 100                        const char *name,
 101                        void *opaque);
 102 void qemu_del_vlan_client(VLANClientState *vc);
 103 VLANClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
 104                                                const char *client_str);
 105 typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
 106 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
 107 int qemu_can_send_packet(VLANClientState *vc);
 108 ssize_t qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov,
 109                           int iovcnt);
 110 ssize_t qemu_sendv_packet_async(VLANClientState *vc, const struct iovec *iov,
 111                                 int iovcnt, NetPacketSent *sent_cb);
 112 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size);
 113 ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size);
 114 ssize_t qemu_send_packet_async(VLANClientState *vc, const uint8_t *buf,
 115                                int size, NetPacketSent *sent_cb);
 116 void qemu_purge_queued_packets(VLANClientState *vc);
 117 void qemu_flush_queued_packets(VLANClientState *vc);
 118 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]);
 119 void qemu_macaddr_default_if_unset(MACAddr *macaddr);
 120 int qemu_show_nic_models(const char *arg, const char *const *models);
 121 void qemu_check_nic_model(NICInfo *nd, const char *model);
 122 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
 123                         const char *default_model);
 124
 125 void do_info_network(Monitor *mon);
 126
 127 /* NIC info */
 128
 129 #define MAX_NICS 8
 130
 131 struct NICInfo {
 132     MACAddr macaddr;
 133     char *model;
 134     char *name;
 135     char *devaddr;
 136     VLANState *vlan;
 137     VLANClientState *netdev;
 138     int used;         /* is this slot in nd_table[] being used? */
 139     int instantiated; /* does this NICInfo correspond to an instantiated NIC? */
 140     int nvectors;
 141 };
 142
 143 extern int nb_nics;
 144 extern NICInfo nd_table[MAX_NICS];
 145 extern int default_net;
 146
 147 /* BT HCI info */
 148
 149 struct HCIInfo {
 150     int (*bdaddr_set)(struct HCIInfo *hci, const uint8_t *bd_addr);
 151     void (*cmd_send)(struct HCIInfo *hci, const uint8_t *data, int len);
 152     void (*sco_send)(struct HCIInfo *hci, const uint8_t *data, int len);
 153     void (*acl_send)(struct HCIInfo *hci, const uint8_t *data, int len);
 154     void *opaque;
 155     void (*evt_recv)(void *opaque, const uint8_t *data, int len);
 156     void (*acl_recv)(void *opaque, const uint8_t *data, int len);
 157 };
 158
 159 struct HCIInfo *qemu_next_hci(void);
 160
 161 /* from net.c */
 162 extern const char *legacy_tftp_prefix;
 163 extern const char *legacy_bootp_filename;
 164
 165 int net_client_init(Monitor *mon, QemuOpts *opts, int is_netdev);
 166 int net_client_parse(QemuOptsList *opts_list, const char *str);
 167 int net_init_clients(void);
 168 void net_check_clients(void);
 169 void net_cleanup(void);
 170 void net_host_device_add(Monitor *mon, const QDict *qdict);
 171 void net_host_device_remove(Monitor *mon, const QDict *qdict);
 172 int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data);
 173 int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
 174
 175 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
 176 #define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
 177
 178 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
 179
 180 int net_handle_fd_param(Monitor *mon, const char *param);
 181
 182 #define vmstate_offset_macaddr(_state, _field)                       \
 183     vmstate_offset_array(_state, _field.a, uint8_t,                \
 184                          sizeof(typeof_field(_state, _field)))
 185
 186 #define VMSTATE_MACADDR(_field, _state) {                            \
 187     .name       = (stringify(_field)),                               \
 188     .size       = sizeof(MACAddr),                                   \
 189     .info       = &vmstate_info_buffer,                              \
 190     .flags      = VMS_BUFFER,                                        \
 191     .offset     = vmstate_offset_macaddr(_state, _field),            \
 192 }
 193
 194 #endif