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 QTAILQ_HEAD(NetFilterHead, NetFilterState) filters; 96 }; 97 98 typedef struct NICState { 99 NetClientState *ncs; 100 NICConf *conf; 101 void *opaque; 102 bool peer_deleted; 103 } NICState; 104 105 char *qemu_mac_strdup_printf(const uint8_t *macaddr); 106 NetClientState *qemu_find_netdev(const char *id); 107 int qemu_find_net_clients_except(const char *id, NetClientState **ncs, 108 NetClientOptionsKind type, int max); 109 NetClientState *qemu_new_net_client(NetClientInfo *info, 110 NetClientState *peer, 111 const char *model, 112 const char *name); 113 NICState *qemu_new_nic(NetClientInfo *info, 114 NICConf *conf, 115 const char *model, 116 const char *name, 117 void *opaque); 118 void qemu_del_nic(NICState *nic); 119 NetClientState *qemu_get_subqueue(NICState *nic, int queue_index); 120 NetClientState *qemu_get_queue(NICState *nic); 121 NICState *qemu_get_nic(NetClientState *nc); 122 void *qemu_get_nic_opaque(NetClientState *nc); 123 void qemu_del_net_client(NetClientState *nc); 124 NetClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id, 125 const char *client_str); 126 typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque); 127 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque); 128 int qemu_can_send_packet(NetClientState *nc); 129 ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, 130 int iovcnt); 131 ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov, 132 int iovcnt, NetPacketSent *sent_cb); 133 void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size); 134 ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size); 135 ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf, 136 int size, NetPacketSent *sent_cb); 137 void qemu_purge_queued_packets(NetClientState *nc); 138 void qemu_flush_queued_packets(NetClientState *nc); 139 void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]); 140 bool qemu_has_ufo(NetClientState *nc); 141 bool qemu_has_vnet_hdr(NetClientState *nc); 142 bool qemu_has_vnet_hdr_len(NetClientState *nc, int len); 143 void qemu_using_vnet_hdr(NetClientState *nc, bool enable); 144 void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, 145 int ecn, int ufo); 146 void qemu_set_vnet_hdr_len(NetClientState *nc, int len); 147 int qemu_set_vnet_le(NetClientState *nc, bool is_le); 148 int qemu_set_vnet_be(NetClientState *nc, bool is_be); 149 void qemu_macaddr_default_if_unset(MACAddr *macaddr); 150 int qemu_show_nic_models(const char *arg, const char *const *models); 151 void qemu_check_nic_model(NICInfo *nd, const char *model); 152 int qemu_find_nic_model(NICInfo *nd, const char * const *models, 153 const char *default_model); 154 155 ssize_t qemu_deliver_packet_iov(NetClientState *sender, 156 unsigned flags, 157 const struct iovec *iov, 158 int iovcnt, 159 void *opaque); 160 161 void print_net_client(Monitor *mon, NetClientState *nc); 162 void hmp_info_network(Monitor *mon, const QDict *qdict); 163 164 /* NIC info */ 165 166 #define MAX_NICS 8 167 168 struct NICInfo { 169 MACAddr macaddr; 170 char *model; 171 char *name; 172 char *devaddr; 173 NetClientState *netdev; 174 int used; /* is this slot in nd_table[] being used? */ 175 int instantiated; /* does this NICInfo correspond to an instantiated NIC? */ 176 int nvectors; 177 }; 178 179 extern int nb_nics; 180 extern NICInfo nd_table[MAX_NICS]; 181 extern int default_net; 182 extern const char *host_net_devices[]; 183 184 /* from net.c */ 185 extern const char *legacy_tftp_prefix; 186 extern const char *legacy_bootp_filename; 187 188 int net_client_init(QemuOpts *opts, int is_netdev, Error **errp); 189 int net_client_parse(QemuOptsList *opts_list, const char *str); 190 int net_init_clients(void); 191 void net_check_clients(void); 192 void net_cleanup(void); 193 void hmp_host_net_add(Monitor *mon, const QDict *qdict); 194 void hmp_host_net_remove(Monitor *mon, const QDict *qdict); 195 void netdev_add(QemuOpts *opts, Error **errp); 196 void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp); 197 198 int net_hub_id_for_client(NetClientState *nc, int *id); 199 NetClientState *net_hub_port_find(int hub_id); 200 201 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup" 202 #define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown" 203 #define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper" 204 #define DEFAULT_BRIDGE_INTERFACE "br0" 205 206 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd); 207 208 #define POLYNOMIAL 0x04c11db6 209 unsigned compute_mcast_idx(const uint8_t *ep); 210 211 #define vmstate_offset_macaddr(_state, _field) \ 212 vmstate_offset_array(_state, _field.a, uint8_t, \ 213 sizeof(typeof_field(_state, _field))) 214 215 #define VMSTATE_MACADDR(_field, _state) { \ 216 .name = (stringify(_field)), \ 217 .size = sizeof(MACAddr), \ 218 .info = &vmstate_info_buffer, \ 219 .flags = VMS_BUFFER, \ 220 .offset = vmstate_offset_macaddr(_state, _field), \ 221 } 222 223 #endif 224