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 int32_t queues; 28 } NICPeers; 29 30 typedef struct NICConf { 31 MACAddr macaddr; 32 NICPeers peers; 33 int32_t bootindex; 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 41 42 /* Net clients */ 43 44 typedef void (NetPoll)(NetClientState *, bool enable); 45 typedef int (NetCanReceive)(NetClientState *); 46 typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t); 47 typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int); 48 typedef void (NetCleanup) (NetClientState *); 49 typedef void (LinkStatusChanged)(NetClientState *); 50 typedef void (NetClientDestructor)(NetClientState *); 51 typedef RxFilterInfo *(QueryRxFilter)(NetClientState *); 52 typedef bool (HasUfo)(NetClientState *); 53 typedef bool (HasVnetHdr)(NetClientState *); 54 typedef bool (HasVnetHdrLen)(NetClientState *, int); 55 typedef void (UsingVnetHdr)(NetClientState *, bool); 56 typedef void (SetOffload)(NetClientState *, int, int, int, int, int); 57 typedef void (SetVnetHdrLen)(NetClientState *, int); 58 typedef int (SetVnetLE)(NetClientState *, bool); 59 typedef int (SetVnetBE)(NetClientState *, bool); 60 61 typedef struct NetClientInfo { 62 NetClientOptionsKind type; 63 size_t size; 64 NetReceive *receive; 65 NetReceive *receive_raw; 66 NetReceiveIOV *receive_iov; 67 NetCanReceive *can_receive; 68 NetCleanup *cleanup; 69 LinkStatusChanged *link_status_changed; 70 QueryRxFilter *query_rx_filter; 71 NetPoll *poll; 72 HasUfo *has_ufo; 73 HasVnetHdr *has_vnet_hdr; 74 HasVnetHdrLen *has_vnet_hdr_len; 75 UsingVnetHdr *using_vnet_hdr; 76 SetOffload *set_offload; 77 SetVnetHdrLen *set_vnet_hdr_len; 78 SetVnetLE *set_vnet_le; 79 SetVnetBE *set_vnet_be; 80 } NetClientInfo; 81 82 struct NetClientState { 83 NetClientInfo *info; 84 int link_down; 85 QTAILQ_ENTRY(NetClientState) next; 86 NetClientState *peer; 87 NetQueue *incoming_queue; 88 char *model; 89 char *name; 90 char info_str[256]; 91 unsigned receive_disabled : 1; 92 NetClientDestructor *destructor; 93 unsigned int queue_index; 94 unsigned rxfilter_notify_enabled:1; 95 }; 96 97 typedef struct NICState { 98 NetClientState *ncs; 99 NICConf *conf; 100 void *opaque; 101 bool peer_deleted; 102 } NICState; 103 104 char *qemu_mac_strdup_printf(const uint8_t *macaddr); 105 NetClientState *qemu_find_netdev(const char *id); 106 int qemu_find_net_clients_except(const char *id, NetClientState **ncs, 107 NetClientOptionsKind type, int max); 108 NetClientState *qemu_new_net_client(NetClientInfo *info, 109 NetClientState *peer, 110 const char *model, 111 const char *name); 112 NICState *qemu_new_nic(NetClientInfo *info, 113 NICConf *conf, 114 const char *model, 115 const char *name, 116 void *opaque); 117 void qemu_del_nic(NICState *nic); 118 NetClientState *qemu_get_subqueue(NICState *nic, int queue_index); 119 NetClientState *qemu_get_queue(NICState *nic); 120 NICState *qemu_get_nic(NetClientState *nc); 121 void *qemu_get_nic_opaque(NetClientState *nc); 122 void qemu_del_net_client(NetClientState *nc); 123 NetClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id, 124 const char *client_str); 125 typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque); 126 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque); 127 int qemu_can_send_packet(NetClientState *nc); 128 ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, 129 int iovcnt); 130 ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov, 131 int iovcnt, NetPacketSent *sent_cb); 132 void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size); 133 ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size); 134 ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf, 135 int size, NetPacketSent *sent_cb); 136 void qemu_purge_queued_packets(NetClientState *nc); 137 void qemu_flush_queued_packets(NetClientState *nc); 138 void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]); 139 bool qemu_has_ufo(NetClientState *nc); 140 bool qemu_has_vnet_hdr(NetClientState *nc); 141 bool qemu_has_vnet_hdr_len(NetClientState *nc, int len); 142 void qemu_using_vnet_hdr(NetClientState *nc, bool enable); 143 void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, 144 int ecn, int ufo); 145 void qemu_set_vnet_hdr_len(NetClientState *nc, int len); 146 int qemu_set_vnet_le(NetClientState *nc, bool is_le); 147 int qemu_set_vnet_be(NetClientState *nc, bool is_be); 148 void qemu_macaddr_default_if_unset(MACAddr *macaddr); 149 int qemu_show_nic_models(const char *arg, const char *const *models); 150 void qemu_check_nic_model(NICInfo *nd, const char *model); 151 int qemu_find_nic_model(NICInfo *nd, const char * const *models, 152 const char *default_model); 153 154 ssize_t qemu_deliver_packet(NetClientState *sender, 155 unsigned flags, 156 const uint8_t *data, 157 size_t size, 158 void *opaque); 159 ssize_t qemu_deliver_packet_iov(NetClientState *sender, 160 unsigned flags, 161 const struct iovec *iov, 162 int iovcnt, 163 void *opaque); 164 165 void print_net_client(Monitor *mon, NetClientState *nc); 166 void hmp_info_network(Monitor *mon, const QDict *qdict); 167 168 /* NIC info */ 169 170 #define MAX_NICS 8 171 172 struct NICInfo { 173 MACAddr macaddr; 174 char *model; 175 char *name; 176 char *devaddr; 177 NetClientState *netdev; 178 int used; /* is this slot in nd_table[] being used? */ 179 int instantiated; /* does this NICInfo correspond to an instantiated NIC? */ 180 int nvectors; 181 }; 182 183 extern int nb_nics; 184 extern NICInfo nd_table[MAX_NICS]; 185 extern int default_net; 186 extern const char *host_net_devices[]; 187 188 /* from net.c */ 189 extern const char *legacy_tftp_prefix; 190 extern const char *legacy_bootp_filename; 191 192 int net_client_init(QemuOpts *opts, int is_netdev, Error **errp); 193 int net_client_parse(QemuOptsList *opts_list, const char *str); 194 int net_init_clients(void); 195 void net_check_clients(void); 196 void net_cleanup(void); 197 void hmp_host_net_add(Monitor *mon, const QDict *qdict); 198 void hmp_host_net_remove(Monitor *mon, const QDict *qdict); 199 void netdev_add(QemuOpts *opts, Error **errp); 200 void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp); 201 202 int net_hub_id_for_client(NetClientState *nc, int *id); 203 NetClientState *net_hub_port_find(int hub_id); 204 205 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup" 206 #define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown" 207 #define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper" 208 #define DEFAULT_BRIDGE_INTERFACE "br0" 209 210 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd); 211 212 #define POLYNOMIAL 0x04c11db6 213 unsigned compute_mcast_idx(const uint8_t *ep); 214 215 #define vmstate_offset_macaddr(_state, _field) \ 216 vmstate_offset_array(_state, _field.a, uint8_t, \ 217 sizeof(typeof_field(_state, _field))) 218 219 #define VMSTATE_MACADDR(_field, _state) { \ 220 .name = (stringify(_field)), \ 221 .size = sizeof(MACAddr), \ 222 .info = &vmstate_info_buffer, \ 223 .flags = VMS_BUFFER, \ 224 .offset = vmstate_offset_macaddr(_state, _field), \ 225 } 226 227 #endif 228