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     NET_CLIENT_TYPE_BRIDGE,
  41
  42     NET_CLIENT_TYPE_MAX
  43 } net_client_type;
  44
  45 typedef void (NetPoll)(VLANClientState *, bool enable);
  46 typedef int (NetCanReceive)(VLANClientState *);
  47 typedef ssize_t (NetReceive)(VLANClientState *, const uint8_t *, size_t);
  48 typedef ssize_t (NetReceiveIOV)(VLANClientState *, const struct iovec *, int);
  49 typedef void (NetCleanup) (VLANClientState *);
  50 typedef void (LinkStatusChanged)(VLANClientState *);
  51
  52 typedef struct NetClientInfo {
  53     net_client_type type;
  54     size_t size;
  55     NetReceive *receive;
  56     NetReceive *receive_raw;
  57     NetReceiveIOV *receive_iov;
  58     NetCanReceive *can_receive;
  59     NetCleanup *cleanup;
  60     LinkStatusChanged *link_status_changed;
  61     NetPoll *poll;
  62 } NetClientInfo;
  63
  64 struct VLANClientState {
  65     NetClientInfo *info;
  66     int link_down;
  67     QTAILQ_ENTRY(VLANClientState) next;
  68     struct VLANState *vlan;
  69     VLANClientState *peer;
  70     NetQueue *send_queue;
  71     char *model;
  72     char *name;
  73     char info_str[256];
  74     unsigned receive_disabled : 1;
  75 };
  76
  77 typedef struct NICState {
  78     VLANClientState nc;
  79     NICConf *conf;
  80     void *opaque;
  81     bool peer_deleted;
  82 } NICState;
  83
  84 struct VLANState {
  85     int id;
  86     QTAILQ_HEAD(, VLANClientState) clients;
  87     QTAILQ_ENTRY(VLANState) next;
  88     NetQueue *send_queue;
  89 };
  90
  91 VLANState *qemu_find_vlan(int id, int allocate);
  92 VLANClientState *qemu_find_netdev(const char *id);
  93 VLANClientState *qemu_new_net_client(NetClientInfo *info,
  94                                      VLANState *vlan,
  95                                      VLANClientState *peer,
  96                                      const char *model,
  97                                      const char *name);
  98 NICState *qemu_new_nic(NetClientInfo *info,
  99                        NICConf *conf,
 100                        const char *model,
 101                        const char *name,
 102                        void *opaque);
 103 void qemu_del_vlan_client(VLANClientState *vc);
 104 VLANClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
 105                                                const char *client_str);
 106 typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
 107 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
 108 int qemu_can_send_packet(VLANClientState *vc);
 109 ssize_t qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov,
 110                           int iovcnt);
 111 ssize_t qemu_sendv_packet_async(VLANClientState *vc, const struct iovec *iov,
 112                                 int iovcnt, NetPacketSent *sent_cb);
 113 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size);
 114 ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size);
 115 ssize_t qemu_send_packet_async(VLANClientState *vc, const uint8_t *buf,
 116                                int size, NetPacketSent *sent_cb);
 117 void qemu_purge_queued_packets(VLANClientState *vc);
 118 void qemu_flush_queued_packets(VLANClientState *vc);
 119 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]);
 120 void qemu_macaddr_default_if_unset(MACAddr *macaddr);
 121 int qemu_show_nic_models(const char *arg, const char *const *models);
 122 void qemu_check_nic_model(NICInfo *nd, const char *model);
 123 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
 124                         const char *default_model);
 125
 126 void do_info_network(Monitor *mon);
 127
 128 /* NIC info */
 129
 130 #define MAX_NICS 8
 131
 132 struct NICInfo {
 133     MACAddr macaddr;
 134     char *model;
 135     char *name;
 136     char *devaddr;
 137     VLANState *vlan;
 138     VLANClientState *netdev;
 139     int used;         /* is this slot in nd_table[] being used? */
 140     int instantiated; /* does this NICInfo correspond to an instantiated NIC? */
 141     int nvectors;
 142 };
 143
 144 extern int nb_nics;
 145 extern NICInfo nd_table[MAX_NICS];
 146 extern int default_net;
 147
 148 /* BT HCI info */
 149
 150 struct HCIInfo {
 151     int (*bdaddr_set)(struct HCIInfo *hci, const uint8_t *bd_addr);
 152     void (*cmd_send)(struct HCIInfo *hci, const uint8_t *data, int len);
 153     void (*sco_send)(struct HCIInfo *hci, const uint8_t *data, int len);
 154     void (*acl_send)(struct HCIInfo *hci, const uint8_t *data, int len);
 155     void *opaque;
 156     void (*evt_recv)(void *opaque, const uint8_t *data, int len);
 157     void (*acl_recv)(void *opaque, const uint8_t *data, int len);
 158 };
 159
 160 struct HCIInfo *qemu_next_hci(void);
 161
 162 /* from net.c */
 163 extern const char *legacy_tftp_prefix;
 164 extern const char *legacy_bootp_filename;
 165
 166 int net_client_init(QemuOpts *opts, int is_netdev, Error **errp);
 167 int net_client_parse(QemuOptsList *opts_list, const char *str);
 168 int net_init_clients(void);
 169 void net_check_clients(void);
 170 void net_cleanup(void);
 171 void net_host_device_add(Monitor *mon, const QDict *qdict);
 172 void net_host_device_remove(Monitor *mon, const QDict *qdict);
 173 void netdev_add(QemuOpts *opts, Error **errp);
 174 int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret);
 175 int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
 176
 177 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
 178 #define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
 179 #define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
 180 #define DEFAULT_BRIDGE_INTERFACE "br0"
 181
 182 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
 183
 184 int net_handle_fd_param(Monitor *mon, const char *param);
 185
 186 #define POLYNOMIAL 0x04c11db6
 187 unsigned compute_mcast_idx(const uint8_t *ep);
 188
 189 #define vmstate_offset_macaddr(_state, _field)                       \
 190     vmstate_offset_array(_state, _field.a, uint8_t,                \
 191                          sizeof(typeof_field(_state, _field)))
 192
 193 #define VMSTATE_MACADDR(_field, _state) {                            \
 194     .name       = (stringify(_field)),                               \
 195     .size       = sizeof(MACAddr),                                   \
 196     .info       = &vmstate_info_buffer,                              \
 197     .flags      = VMS_BUFFER,                                        \
 198     .offset     = vmstate_offset_macaddr(_state, _field),            \
 199 }
 200
 201 #endif