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 #include "qapi-types.h"
  11
  12 struct MACAddr {
  13     uint8_t a[6];
  14 };
  15
  16 /* qdev nic properties */
  17
  18 typedef struct NICConf {
  19     MACAddr macaddr;
  20     VLANState *vlan;
  21     VLANClientState *peer;
  22     int32_t bootindex;
  23 } NICConf;
  24
  25 #define DEFINE_NIC_PROPERTIES(_state, _conf)                            \
  26     DEFINE_PROP_MACADDR("mac",   _state, _conf.macaddr),                \
  27     DEFINE_PROP_VLAN("vlan",     _state, _conf.peer),                   \
  28     DEFINE_PROP_NETDEV("netdev", _state, _conf.peer),                   \
  29     DEFINE_PROP_INT32("bootindex", _state, _conf.bootindex, -1)
  30
  31 /* VLANs support */
  32
  33 typedef void (NetPoll)(VLANClientState *, bool enable);
  34 typedef int (NetCanReceive)(VLANClientState *);
  35 typedef ssize_t (NetReceive)(VLANClientState *, const uint8_t *, size_t);
  36 typedef ssize_t (NetReceiveIOV)(VLANClientState *, const struct iovec *, int);
  37 typedef void (NetCleanup) (VLANClientState *);
  38 typedef void (LinkStatusChanged)(VLANClientState *);
  39
  40 typedef struct NetClientInfo {
  41     NetClientOptionsKind type;
  42     size_t size;
  43     NetReceive *receive;
  44     NetReceive *receive_raw;
  45     NetReceiveIOV *receive_iov;
  46     NetCanReceive *can_receive;
  47     NetCleanup *cleanup;
  48     LinkStatusChanged *link_status_changed;
  49     NetPoll *poll;
  50 } NetClientInfo;
  51
  52 struct VLANClientState {
  53     NetClientInfo *info;
  54     int link_down;
  55     QTAILQ_ENTRY(VLANClientState) next;
  56     struct VLANState *vlan;
  57     VLANClientState *peer;
  58     NetQueue *send_queue;
  59     char *model;
  60     char *name;
  61     char info_str[256];
  62     unsigned receive_disabled : 1;
  63 };
  64
  65 typedef struct NICState {
  66     VLANClientState nc;
  67     NICConf *conf;
  68     void *opaque;
  69     bool peer_deleted;
  70 } NICState;
  71
  72 struct VLANState {
  73     int id;
  74     QTAILQ_HEAD(, VLANClientState) clients;
  75     QTAILQ_ENTRY(VLANState) next;
  76     NetQueue *send_queue;
  77 };
  78
  79 VLANClientState *qemu_find_netdev(const char *id);
  80 VLANClientState *qemu_new_net_client(NetClientInfo *info,
  81                                      VLANClientState *peer,
  82                                      const char *model,
  83                                      const char *name);
  84 NICState *qemu_new_nic(NetClientInfo *info,
  85                        NICConf *conf,
  86                        const char *model,
  87                        const char *name,
  88                        void *opaque);
  89 void qemu_del_vlan_client(VLANClientState *vc);
  90 VLANClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
  91                                                const char *client_str);
  92 typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
  93 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
  94 int qemu_can_send_packet(VLANClientState *vc);
  95 ssize_t qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov,
  96                           int iovcnt);
  97 ssize_t qemu_sendv_packet_async(VLANClientState *vc, const struct iovec *iov,
  98                                 int iovcnt, NetPacketSent *sent_cb);
  99 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size);
 100 ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size);
 101 ssize_t qemu_send_packet_async(VLANClientState *vc, const uint8_t *buf,
 102                                int size, NetPacketSent *sent_cb);
 103 void qemu_purge_queued_packets(VLANClientState *vc);
 104 void qemu_flush_queued_packets(VLANClientState *vc);
 105 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]);
 106 void qemu_macaddr_default_if_unset(MACAddr *macaddr);
 107 int qemu_show_nic_models(const char *arg, const char *const *models);
 108 void qemu_check_nic_model(NICInfo *nd, const char *model);
 109 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
 110                         const char *default_model);
 111
 112 void do_info_network(Monitor *mon);
 113
 114 /* NIC info */
 115
 116 #define MAX_NICS 8
 117
 118 struct NICInfo {
 119     MACAddr macaddr;
 120     char *model;
 121     char *name;
 122     char *devaddr;
 123     VLANState *vlan;
 124     VLANClientState *netdev;
 125     int used;         /* is this slot in nd_table[] being used? */
 126     int instantiated; /* does this NICInfo correspond to an instantiated NIC? */
 127     int nvectors;
 128 };
 129
 130 extern int nb_nics;
 131 extern NICInfo nd_table[MAX_NICS];
 132 extern int default_net;
 133
 134 /* BT HCI info */
 135
 136 struct HCIInfo {
 137     int (*bdaddr_set)(struct HCIInfo *hci, const uint8_t *bd_addr);
 138     void (*cmd_send)(struct HCIInfo *hci, const uint8_t *data, int len);
 139     void (*sco_send)(struct HCIInfo *hci, const uint8_t *data, int len);
 140     void (*acl_send)(struct HCIInfo *hci, const uint8_t *data, int len);
 141     void *opaque;
 142     void (*evt_recv)(void *opaque, const uint8_t *data, int len);
 143     void (*acl_recv)(void *opaque, const uint8_t *data, int len);
 144 };
 145
 146 struct HCIInfo *qemu_next_hci(void);
 147
 148 /* from net.c */
 149 extern const char *legacy_tftp_prefix;
 150 extern const char *legacy_bootp_filename;
 151
 152 int net_client_init(QemuOpts *opts, int is_netdev, Error **errp);
 153 int net_client_parse(QemuOptsList *opts_list, const char *str);
 154 int net_init_clients(void);
 155 void net_check_clients(void);
 156 void net_cleanup(void);
 157 void net_host_device_add(Monitor *mon, const QDict *qdict);
 158 void net_host_device_remove(Monitor *mon, const QDict *qdict);
 159 void netdev_add(QemuOpts *opts, Error **errp);
 160 int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret);
 161
 162 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
 163 #define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
 164 #define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
 165 #define DEFAULT_BRIDGE_INTERFACE "br0"
 166
 167 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
 168
 169 int net_handle_fd_param(Monitor *mon, const char *param);
 170
 171 #define POLYNOMIAL 0x04c11db6
 172 unsigned compute_mcast_idx(const uint8_t *ep);
 173
 174 #define vmstate_offset_macaddr(_state, _field)                       \
 175     vmstate_offset_array(_state, _field.a, uint8_t,                \
 176                          sizeof(typeof_field(_state, _field)))
 177
 178 #define VMSTATE_MACADDR(_field, _state) {                            \
 179     .name       = (stringify(_field)),                               \
 180     .size       = sizeof(MACAddr),                                   \
 181     .info       = &vmstate_info_buffer,                              \
 182     .flags      = VMS_BUFFER,                                        \
 183     .offset     = vmstate_offset_macaddr(_state, _field),            \
 184 }
 185
 186 #endif