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 NetClientOptionsKind 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 QTAILQ_HEAD(NetFilterHead, NetFilterState) filters; 104 }; 105 106 typedef struct NICState { 107 NetClientState *ncs; 108 NICConf *conf; 109 void *opaque; 110 bool peer_deleted; 111 } NICState; 112 113 struct SocketReadState { 114 int state; /* 0 = getting length, 1 = getting data */ 115 uint32_t index; 116 uint32_t packet_len; 117 uint8_t buf[NET_BUFSIZE]; 118 SocketReadStateFinalize *finalize; 119 }; 120 121 int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size); 122 char *qemu_mac_strdup_printf(const uint8_t *macaddr); 123 NetClientState *qemu_find_netdev(const char *id); 124 int qemu_find_net_clients_except(const char *id, NetClientState **ncs, 125 NetClientOptionsKind type, int max); 126 NetClientState *qemu_new_net_client(NetClientInfo *info, 127 NetClientState *peer, 128 const char *model, 129 const char *name); 130 NICState *qemu_new_nic(NetClientInfo *info, 131 NICConf *conf, 132 const char *model, 133 const char *name, 134 void *opaque); 135 void qemu_del_nic(NICState *nic); 136 NetClientState *qemu_get_subqueue(NICState *nic, int queue_index); 137 NetClientState *qemu_get_queue(NICState *nic); 138 NICState *qemu_get_nic(NetClientState *nc); 139 void *qemu_get_nic_opaque(NetClientState *nc); 140 void qemu_del_net_client(NetClientState *nc); 141 NetClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id, 142 const char *client_str); 143 typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque); 144 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque); 145 int qemu_can_send_packet(NetClientState *nc); 146 ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, 147 int iovcnt); 148 ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov, 149 int iovcnt, NetPacketSent *sent_cb); 150 void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size); 151 ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size); 152 ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf, 153 int size, NetPacketSent *sent_cb); 154 void qemu_purge_queued_packets(NetClientState *nc); 155 void qemu_flush_queued_packets(NetClientState *nc); 156 void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]); 157 bool qemu_has_ufo(NetClientState *nc); 158 bool qemu_has_vnet_hdr(NetClientState *nc); 159 bool qemu_has_vnet_hdr_len(NetClientState *nc, int len); 160 void qemu_using_vnet_hdr(NetClientState *nc, bool enable); 161 void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, 162 int ecn, int ufo); 163 void qemu_set_vnet_hdr_len(NetClientState *nc, int len); 164 int qemu_set_vnet_le(NetClientState *nc, bool is_le); 165 int qemu_set_vnet_be(NetClientState *nc, bool is_be); 166 void qemu_macaddr_default_if_unset(MACAddr *macaddr); 167 int qemu_show_nic_models(const char *arg, const char *const *models); 168 void qemu_check_nic_model(NICInfo *nd, const char *model); 169 int qemu_find_nic_model(NICInfo *nd, const char * const *models, 170 const char *default_model); 171 172 ssize_t qemu_deliver_packet_iov(NetClientState *sender, 173 unsigned flags, 174 const struct iovec *iov, 175 int iovcnt, 176 void *opaque); 177 178 void print_net_client(Monitor *mon, NetClientState *nc); 179 void hmp_info_network(Monitor *mon, const QDict *qdict); 180 void net_socket_rs_init(SocketReadState *rs, 181 SocketReadStateFinalize *finalize); 182 183 /* NIC info */ 184 185 #define MAX_NICS 8 186 187 struct NICInfo { 188 MACAddr macaddr; 189 char *model; 190 char *name; 191 char *devaddr; 192 NetClientState *netdev; 193 int used; /* is this slot in nd_table[] being used? */ 194 int instantiated; /* does this NICInfo correspond to an instantiated NIC? */ 195 int nvectors; 196 }; 197 198 extern int nb_nics; 199 extern NICInfo nd_table[MAX_NICS]; 200 extern const char *host_net_devices[]; 201 202 /* from net.c */ 203 extern const char *legacy_tftp_prefix; 204 extern const char *legacy_bootp_filename; 205 206 int net_client_init(QemuOpts *opts, int is_netdev, Error **errp); 207 int net_client_parse(QemuOptsList *opts_list, const char *str); 208 int net_init_clients(void); 209 void net_check_clients(void); 210 void net_cleanup(void); 211 void hmp_host_net_add(Monitor *mon, const QDict *qdict); 212 void hmp_host_net_remove(Monitor *mon, const QDict *qdict); 213 void netdev_add(QemuOpts *opts, Error **errp); 214 void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp); 215 216 int net_hub_id_for_client(NetClientState *nc, int *id); 217 NetClientState *net_hub_port_find(int hub_id); 218 219 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup" 220 #define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown" 221 #define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper" 222 #define DEFAULT_BRIDGE_INTERFACE "br0" 223 224 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd); 225 226 #define POLYNOMIAL 0x04c11db6 227 unsigned compute_mcast_idx(const uint8_t *ep); 228 229 #define vmstate_offset_macaddr(_state, _field) \ 230 vmstate_offset_array(_state, _field.a, uint8_t, \ 231 sizeof(typeof_field(_state, _field))) 232 233 #define VMSTATE_MACADDR(_field, _state) { \ 234 .name = (stringify(_field)), \ 235 .size = sizeof(MACAddr), \ 236 .info = &vmstate_info_buffer, \ 237 .flags = VMS_BUFFER, \ 238 .offset = vmstate_offset_macaddr(_state, _field), \ 239 } 240 241 #endif 242