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 MAC_FMT "%02X:%02X:%02X:%02X:%02X:%02X" 13 #define MAC_ARG(x) ((uint8_t *)(x))[0], ((uint8_t *)(x))[1], \ 14 ((uint8_t *)(x))[2], ((uint8_t *)(x))[3], \ 15 ((uint8_t *)(x))[4], ((uint8_t *)(x))[5] 16 17 #define MAX_QUEUE_NUM 1024 18 19 /* Maximum GSO packet size (64k) plus plenty of room for 20 * the ethernet and virtio_net headers 21 */ 22 #define NET_BUFSIZE (4096 + 65536) 23 24 struct MACAddr { 25 uint8_t a[6]; 26 }; 27 28 /* qdev nic properties */ 29 30 typedef struct NICPeers { 31 NetClientState *ncs[MAX_QUEUE_NUM]; 32 int32_t queues; 33 } NICPeers; 34 35 typedef struct NICConf { 36 MACAddr macaddr; 37 NICPeers peers; 38 int32_t bootindex; 39 } NICConf; 40 41 #define DEFINE_NIC_PROPERTIES(_state, _conf) \ 42 DEFINE_PROP_MACADDR("mac", _state, _conf.macaddr), \ 43 DEFINE_PROP_VLAN("vlan", _state, _conf.peers), \ 44 DEFINE_PROP_NETDEV("netdev", _state, _conf.peers) 45 46 47 /* Net clients */ 48 49 typedef void (NetPoll)(NetClientState *, bool enable); 50 typedef int (NetCanReceive)(NetClientState *); 51 typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t); 52 typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int); 53 typedef void (NetCleanup) (NetClientState *); 54 typedef void (LinkStatusChanged)(NetClientState *); 55 typedef void (NetClientDestructor)(NetClientState *); 56 typedef RxFilterInfo *(QueryRxFilter)(NetClientState *); 57 typedef bool (HasUfo)(NetClientState *); 58 typedef bool (HasVnetHdr)(NetClientState *); 59 typedef bool (HasVnetHdrLen)(NetClientState *, int); 60 typedef void (UsingVnetHdr)(NetClientState *, bool); 61 typedef void (SetOffload)(NetClientState *, int, int, int, int, int); 62 typedef void (SetVnetHdrLen)(NetClientState *, int); 63 typedef int (SetVnetLE)(NetClientState *, bool); 64 typedef int (SetVnetBE)(NetClientState *, bool); 65 typedef struct SocketReadState SocketReadState; 66 typedef void (SocketReadStateFinalize)(SocketReadState *rs); 67 68 typedef struct NetClientInfo { 69 NetClientDriver type; 70 size_t size; 71 NetReceive *receive; 72 NetReceive *receive_raw; 73 NetReceiveIOV *receive_iov; 74 NetCanReceive *can_receive; 75 NetCleanup *cleanup; 76 LinkStatusChanged *link_status_changed; 77 QueryRxFilter *query_rx_filter; 78 NetPoll *poll; 79 HasUfo *has_ufo; 80 HasVnetHdr *has_vnet_hdr; 81 HasVnetHdrLen *has_vnet_hdr_len; 82 UsingVnetHdr *using_vnet_hdr; 83 SetOffload *set_offload; 84 SetVnetHdrLen *set_vnet_hdr_len; 85 SetVnetLE *set_vnet_le; 86 SetVnetBE *set_vnet_be; 87 } NetClientInfo; 88 89 struct NetClientState { 90 NetClientInfo *info; 91 int link_down; 92 QTAILQ_ENTRY(NetClientState) next; 93 NetClientState *peer; 94 NetQueue *incoming_queue; 95 char *model; 96 char *name; 97 char info_str[256]; 98 unsigned receive_disabled : 1; 99 NetClientDestructor *destructor; 100 unsigned int queue_index; 101 unsigned rxfilter_notify_enabled:1; 102 int vring_enable; 103 int vnet_hdr_len; 104 QTAILQ_HEAD(NetFilterHead, NetFilterState) filters; 105 }; 106 107 typedef struct NICState { 108 NetClientState *ncs; 109 NICConf *conf; 110 void *opaque; 111 bool peer_deleted; 112 } NICState; 113 114 struct SocketReadState { 115 /* 0 = getting length, 1 = getting vnet header length, 2 = getting data */ 116 int state; 117 /* This flag decide whether to read the vnet_hdr_len field */ 118 bool vnet_hdr; 119 uint32_t index; 120 uint32_t packet_len; 121 uint32_t vnet_hdr_len; 122 uint8_t buf[NET_BUFSIZE]; 123 SocketReadStateFinalize *finalize; 124 }; 125 126 int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size); 127 char *qemu_mac_strdup_printf(const uint8_t *macaddr); 128 NetClientState *qemu_find_netdev(const char *id); 129 int qemu_find_net_clients_except(const char *id, NetClientState **ncs, 130 NetClientDriver type, int max); 131 NetClientState *qemu_new_net_client(NetClientInfo *info, 132 NetClientState *peer, 133 const char *model, 134 const char *name); 135 NICState *qemu_new_nic(NetClientInfo *info, 136 NICConf *conf, 137 const char *model, 138 const char *name, 139 void *opaque); 140 void qemu_del_nic(NICState *nic); 141 NetClientState *qemu_get_subqueue(NICState *nic, int queue_index); 142 NetClientState *qemu_get_queue(NICState *nic); 143 NICState *qemu_get_nic(NetClientState *nc); 144 void *qemu_get_nic_opaque(NetClientState *nc); 145 void qemu_del_net_client(NetClientState *nc); 146 typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque); 147 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque); 148 int qemu_can_send_packet(NetClientState *nc); 149 ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, 150 int iovcnt); 151 ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov, 152 int iovcnt, NetPacketSent *sent_cb); 153 void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size); 154 ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size); 155 ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf, 156 int size, NetPacketSent *sent_cb); 157 void qemu_purge_queued_packets(NetClientState *nc); 158 void qemu_flush_queued_packets(NetClientState *nc); 159 void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]); 160 bool qemu_has_ufo(NetClientState *nc); 161 bool qemu_has_vnet_hdr(NetClientState *nc); 162 bool qemu_has_vnet_hdr_len(NetClientState *nc, int len); 163 void qemu_using_vnet_hdr(NetClientState *nc, bool enable); 164 void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, 165 int ecn, int ufo); 166 void qemu_set_vnet_hdr_len(NetClientState *nc, int len); 167 int qemu_set_vnet_le(NetClientState *nc, bool is_le); 168 int qemu_set_vnet_be(NetClientState *nc, bool is_be); 169 void qemu_macaddr_default_if_unset(MACAddr *macaddr); 170 int qemu_show_nic_models(const char *arg, const char *const *models); 171 void qemu_check_nic_model(NICInfo *nd, const char *model); 172 int qemu_find_nic_model(NICInfo *nd, const char * const *models, 173 const char *default_model); 174 175 ssize_t qemu_deliver_packet_iov(NetClientState *sender, 176 unsigned flags, 177 const struct iovec *iov, 178 int iovcnt, 179 void *opaque); 180 181 void print_net_client(Monitor *mon, NetClientState *nc); 182 void hmp_info_network(Monitor *mon, const QDict *qdict); 183 void net_socket_rs_init(SocketReadState *rs, 184 SocketReadStateFinalize *finalize, 185 bool vnet_hdr); 186 187 /* NIC info */ 188 189 #define MAX_NICS 8 190 191 struct NICInfo { 192 MACAddr macaddr; 193 char *model; 194 char *name; 195 char *devaddr; 196 NetClientState *netdev; 197 int used; /* is this slot in nd_table[] being used? */ 198 int instantiated; /* does this NICInfo correspond to an instantiated NIC? */ 199 int nvectors; 200 }; 201 202 extern int nb_nics; 203 extern NICInfo nd_table[MAX_NICS]; 204 extern const char *host_net_devices[]; 205 206 /* from net.c */ 207 extern const char *legacy_tftp_prefix; 208 extern const char *legacy_bootp_filename; 209 210 int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp); 211 int net_client_parse(QemuOptsList *opts_list, const char *str); 212 int net_init_clients(void); 213 void net_check_clients(void); 214 void net_cleanup(void); 215 void hmp_host_net_add(Monitor *mon, const QDict *qdict); 216 void hmp_host_net_remove(Monitor *mon, const QDict *qdict); 217 void netdev_add(QemuOpts *opts, Error **errp); 218 void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp); 219 220 int net_hub_id_for_client(NetClientState *nc, int *id); 221 NetClientState *net_hub_port_find(int hub_id); 222 223 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup" 224 #define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown" 225 #define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper" 226 #define DEFAULT_BRIDGE_INTERFACE "br0" 227 228 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd); 229 230 #define POLYNOMIAL 0x04c11db6 231 unsigned compute_mcast_idx(const uint8_t *ep); 232 233 #define vmstate_offset_macaddr(_state, _field) \ 234 vmstate_offset_array(_state, _field.a, uint8_t, \ 235 sizeof(typeof_field(_state, _field))) 236 237 #define VMSTATE_MACADDR(_field, _state) { \ 238 .name = (stringify(_field)), \ 239 .size = sizeof(MACAddr), \ 240 .info = &vmstate_info_buffer, \ 241 .flags = VMS_BUFFER, \ 242 .offset = vmstate_offset_macaddr(_state, _field), \ 243 } 244 245 #endif 246