1 #ifndef QEMU_NET_H 2 #define QEMU_NET_H 3 4 #include "qemu/queue.h" 5 #include "qemu-common.h" 6 #include "qapi/qmp/qdict.h" 7 #include "qemu/option.h" 8 #include "net/queue.h" 9 #include "migration/vmstate.h" 10 #include "qapi-types.h" 11 12 #define MAX_QUEUE_NUM 1024 13 14 /* Maximum GSO packet size (64k) plus plenty of room for 15 * the ethernet and virtio_net headers 16 */ 17 #define NET_BUFSIZE (4096 + 65536) 18 19 struct MACAddr { 20 uint8_t a[6]; 21 }; 22 23 /* qdev nic properties */ 24 25 typedef struct NICPeers { 26 NetClientState *ncs[MAX_QUEUE_NUM]; 27 } NICPeers; 28 29 typedef struct NICConf { 30 MACAddr macaddr; 31 NICPeers peers; 32 int32_t bootindex; 33 int32_t queues; 34 } NICConf; 35 36 #define DEFINE_NIC_PROPERTIES(_state, _conf) \ 37 DEFINE_PROP_MACADDR("mac", _state, _conf.macaddr), \ 38 DEFINE_PROP_VLAN("vlan", _state, _conf.peers), \ 39 DEFINE_PROP_NETDEV("netdev", _state, _conf.peers), \ 40 DEFINE_PROP_INT32("bootindex", _state, _conf.bootindex, -1) 41 42 43 /* Net clients */ 44 45 typedef void (NetPoll)(NetClientState *, bool enable); 46 typedef int (NetCanReceive)(NetClientState *); 47 typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t); 48 typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int); 49 typedef void (NetCleanup) (NetClientState *); 50 typedef void (LinkStatusChanged)(NetClientState *); 51 typedef void (NetClientDestructor)(NetClientState *); 52 typedef RxFilterInfo *(QueryRxFilter)(NetClientState *); 53 54 typedef struct NetClientInfo { 55 NetClientOptionsKind type; 56 size_t size; 57 NetReceive *receive; 58 NetReceive *receive_raw; 59 NetReceiveIOV *receive_iov; 60 NetCanReceive *can_receive; 61 NetCleanup *cleanup; 62 LinkStatusChanged *link_status_changed; 63 QueryRxFilter *query_rx_filter; 64 NetPoll *poll; 65 } NetClientInfo; 66 67 struct NetClientState { 68 NetClientInfo *info; 69 int link_down; 70 QTAILQ_ENTRY(NetClientState) next; 71 NetClientState *peer; 72 NetQueue *incoming_queue; 73 char *model; 74 char *name; 75 char info_str[256]; 76 unsigned receive_disabled : 1; 77 NetClientDestructor *destructor; 78 unsigned int queue_index; 79 unsigned rxfilter_notify_enabled:1; 80 }; 81 82 typedef struct NICState { 83 NetClientState *ncs; 84 NICConf *conf; 85 void *opaque; 86 bool peer_deleted; 87 } NICState; 88 89 NetClientState *qemu_find_netdev(const char *id); 90 int qemu_find_net_clients_except(const char *id, NetClientState **ncs, 91 NetClientOptionsKind type, int max); 92 NetClientState *qemu_new_net_client(NetClientInfo *info, 93 NetClientState *peer, 94 const char *model, 95 const char *name); 96 NICState *qemu_new_nic(NetClientInfo *info, 97 NICConf *conf, 98 const char *model, 99 const char *name, 100 void *opaque); 101 void qemu_del_nic(NICState *nic); 102 NetClientState *qemu_get_subqueue(NICState *nic, int queue_index); 103 NetClientState *qemu_get_queue(NICState *nic); 104 NICState *qemu_get_nic(NetClientState *nc); 105 void *qemu_get_nic_opaque(NetClientState *nc); 106 void qemu_del_net_client(NetClientState *nc); 107 NetClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id, 108 const char *client_str); 109 typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque); 110 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque); 111 int qemu_can_send_packet(NetClientState *nc); 112 ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, 113 int iovcnt); 114 ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov, 115 int iovcnt, NetPacketSent *sent_cb); 116 void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size); 117 ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size); 118 ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf, 119 int size, NetPacketSent *sent_cb); 120 void qemu_purge_queued_packets(NetClientState *nc); 121 void qemu_flush_queued_packets(NetClientState *nc); 122 void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]); 123 void qemu_macaddr_default_if_unset(MACAddr *macaddr); 124 int qemu_show_nic_models(const char *arg, const char *const *models); 125 void qemu_check_nic_model(NICInfo *nd, const char *model); 126 int qemu_find_nic_model(NICInfo *nd, const char * const *models, 127 const char *default_model); 128 129 ssize_t qemu_deliver_packet(NetClientState *sender, 130 unsigned flags, 131 const uint8_t *data, 132 size_t size, 133 void *opaque); 134 ssize_t qemu_deliver_packet_iov(NetClientState *sender, 135 unsigned flags, 136 const struct iovec *iov, 137 int iovcnt, 138 void *opaque); 139 140 void print_net_client(Monitor *mon, NetClientState *nc); 141 void do_info_network(Monitor *mon, const QDict *qdict); 142 143 /* NIC info */ 144 145 #define MAX_NICS 8 146 147 struct NICInfo { 148 MACAddr macaddr; 149 char *model; 150 char *name; 151 char *devaddr; 152 NetClientState *netdev; 153 int used; /* is this slot in nd_table[] being used? */ 154 int instantiated; /* does this NICInfo correspond to an instantiated NIC? */ 155 int nvectors; 156 }; 157 158 extern int nb_nics; 159 extern NICInfo nd_table[MAX_NICS]; 160 extern int default_net; 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); 175 176 int net_hub_id_for_client(NetClientState *nc, int *id); 177 NetClientState *net_hub_port_find(int hub_id); 178 179 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup" 180 #define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown" 181 #define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper" 182 #define DEFAULT_BRIDGE_INTERFACE "br0" 183 184 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd); 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 202