diff options
Diffstat (limited to 'include/net/net.h')
| -rw-r--r-- | include/net/net.h | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/include/net/net.h b/include/net/net.h new file mode 100644 index 000000000..523136c7a --- /dev/null +++ b/include/net/net.h @@ -0,0 +1,258 @@ +#ifndef QEMU_NET_H +#define QEMU_NET_H + +#include "qemu/queue.h" +#include "qapi/qapi-types-net.h" +#include "net/queue.h" +#include "hw/qdev-properties-system.h" + +#define MAC_FMT "%02X:%02X:%02X:%02X:%02X:%02X" +#define MAC_ARG(x) ((uint8_t *)(x))[0], ((uint8_t *)(x))[1], \ + ((uint8_t *)(x))[2], ((uint8_t *)(x))[3], \ + ((uint8_t *)(x))[4], ((uint8_t *)(x))[5] + +#define MAX_QUEUE_NUM 1024 + +/* Maximum GSO packet size (64k) plus plenty of room for + * the ethernet and virtio_net headers + */ +#define NET_BUFSIZE (4096 + 65536) + +struct MACAddr { + uint8_t a[6]; +}; + +/* qdev nic properties */ + +typedef struct NICPeers { + NetClientState *ncs[MAX_QUEUE_NUM]; + int32_t queues; +} NICPeers; + +typedef struct NICConf { + MACAddr macaddr; + NICPeers peers; + int32_t bootindex; +} NICConf; + +#define DEFINE_NIC_PROPERTIES(_state, _conf) \ + DEFINE_PROP_MACADDR("mac", _state, _conf.macaddr), \ + DEFINE_PROP_NETDEV("netdev", _state, _conf.peers) + + +/* Net clients */ + +typedef void (NetPoll)(NetClientState *, bool enable); +typedef bool (NetCanReceive)(NetClientState *); +typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t); +typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int); +typedef void (NetCleanup) (NetClientState *); +typedef void (LinkStatusChanged)(NetClientState *); +typedef void (NetClientDestructor)(NetClientState *); +typedef RxFilterInfo *(QueryRxFilter)(NetClientState *); +typedef bool (HasUfo)(NetClientState *); +typedef bool (HasVnetHdr)(NetClientState *); +typedef bool (HasVnetHdrLen)(NetClientState *, int); +typedef void (UsingVnetHdr)(NetClientState *, bool); +typedef void (SetOffload)(NetClientState *, int, int, int, int, int); +typedef void (SetVnetHdrLen)(NetClientState *, int); +typedef int (SetVnetLE)(NetClientState *, bool); +typedef int (SetVnetBE)(NetClientState *, bool); +typedef struct SocketReadState SocketReadState; +typedef void (SocketReadStateFinalize)(SocketReadState *rs); +typedef void (NetAnnounce)(NetClientState *); +typedef bool (SetSteeringEBPF)(NetClientState *, int); +typedef bool (NetCheckPeerType)(NetClientState *, ObjectClass *, Error **); + +typedef struct NetClientInfo { + NetClientDriver type; + size_t size; + NetReceive *receive; + NetReceive *receive_raw; + NetReceiveIOV *receive_iov; + NetCanReceive *can_receive; + NetCleanup *cleanup; + LinkStatusChanged *link_status_changed; + QueryRxFilter *query_rx_filter; + NetPoll *poll; + HasUfo *has_ufo; + HasVnetHdr *has_vnet_hdr; + HasVnetHdrLen *has_vnet_hdr_len; + UsingVnetHdr *using_vnet_hdr; + SetOffload *set_offload; + SetVnetHdrLen *set_vnet_hdr_len; + SetVnetLE *set_vnet_le; + SetVnetBE *set_vnet_be; + NetAnnounce *announce; + SetSteeringEBPF *set_steering_ebpf; + NetCheckPeerType *check_peer_type; +} NetClientInfo; + +struct NetClientState { + NetClientInfo *info; + int link_down; + QTAILQ_ENTRY(NetClientState) next; + NetClientState *peer; + NetQueue *incoming_queue; + char *model; + char *name; + char info_str[256]; + unsigned receive_disabled : 1; + NetClientDestructor *destructor; + unsigned int queue_index; + unsigned rxfilter_notify_enabled:1; + int vring_enable; + int vnet_hdr_len; + bool is_netdev; + bool do_not_pad; /* do not pad to the minimum ethernet frame length */ + bool is_datapath; + QTAILQ_HEAD(, NetFilterState) filters; +}; + +typedef struct NICState { + NetClientState *ncs; + NICConf *conf; + void *opaque; + bool peer_deleted; +} NICState; + +struct SocketReadState { + /* 0 = getting length, 1 = getting vnet header length, 2 = getting data */ + int state; + /* This flag decide whether to read the vnet_hdr_len field */ + bool vnet_hdr; + uint32_t index; + uint32_t packet_len; + uint32_t vnet_hdr_len; + uint8_t buf[NET_BUFSIZE]; + SocketReadStateFinalize *finalize; +}; + +int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size); +char *qemu_mac_strdup_printf(const uint8_t *macaddr); +NetClientState *qemu_find_netdev(const char *id); +int qemu_find_net_clients_except(const char *id, NetClientState **ncs, + NetClientDriver type, int max); +NetClientState *qemu_new_net_client(NetClientInfo *info, + NetClientState *peer, + const char *model, + const char *name); +NetClientState *qemu_new_net_control_client(NetClientInfo *info, + NetClientState *peer, + const char *model, + const char *name); +NICState *qemu_new_nic(NetClientInfo *info, + NICConf *conf, + const char *model, + const char *name, + void *opaque); +void qemu_del_nic(NICState *nic); +NetClientState *qemu_get_subqueue(NICState *nic, int queue_index); +NetClientState *qemu_get_queue(NICState *nic); +NICState *qemu_get_nic(NetClientState *nc); +void *qemu_get_nic_opaque(NetClientState *nc); +void qemu_del_net_client(NetClientState *nc); +typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque); +void qemu_foreach_nic(qemu_nic_foreach func, void *opaque); +int qemu_can_receive_packet(NetClientState *nc); +int qemu_can_send_packet(NetClientState *nc); +ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, + int iovcnt); +ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov, + int iovcnt, NetPacketSent *sent_cb); +ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size); +ssize_t qemu_receive_packet(NetClientState *nc, const uint8_t *buf, int size); +ssize_t qemu_receive_packet_iov(NetClientState *nc, + const struct iovec *iov, + int iovcnt); +ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size); +ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf, + int size, NetPacketSent *sent_cb); +void qemu_purge_queued_packets(NetClientState *nc); +void qemu_flush_queued_packets(NetClientState *nc); +void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge); +void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]); +bool qemu_has_ufo(NetClientState *nc); +bool qemu_has_vnet_hdr(NetClientState *nc); +bool qemu_has_vnet_hdr_len(NetClientState *nc, int len); +void qemu_using_vnet_hdr(NetClientState *nc, bool enable); +void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, + int ecn, int ufo); +void qemu_set_vnet_hdr_len(NetClientState *nc, int len); +int qemu_set_vnet_le(NetClientState *nc, bool is_le); +int qemu_set_vnet_be(NetClientState *nc, bool is_be); +void qemu_macaddr_default_if_unset(MACAddr *macaddr); +int qemu_show_nic_models(const char *arg, const char *const *models); +void qemu_check_nic_model(NICInfo *nd, const char *model); +int qemu_find_nic_model(NICInfo *nd, const char * const *models, + const char *default_model); + +void print_net_client(Monitor *mon, NetClientState *nc); +void hmp_info_network(Monitor *mon, const QDict *qdict); +void net_socket_rs_init(SocketReadState *rs, + SocketReadStateFinalize *finalize, + bool vnet_hdr); +NetClientState *qemu_get_peer(NetClientState *nc, int queue_index); + +/* NIC info */ + +#define MAX_NICS 8 + +struct NICInfo { + MACAddr macaddr; + char *model; + char *name; + char *devaddr; + NetClientState *netdev; + int used; /* is this slot in nd_table[] being used? */ + int instantiated; /* does this NICInfo correspond to an instantiated NIC? */ + int nvectors; +}; + +extern int nb_nics; +extern NICInfo nd_table[MAX_NICS]; +extern const char *host_net_devices[]; + +/* from net.c */ +int net_client_parse(QemuOptsList *opts_list, const char *str); +void show_netdevs(void); +int net_init_clients(Error **errp); +void net_check_clients(void); +void net_cleanup(void); +void hmp_host_net_add(Monitor *mon, const QDict *qdict); +void hmp_host_net_remove(Monitor *mon, const QDict *qdict); +void netdev_add(QemuOpts *opts, Error **errp); + +int net_hub_id_for_client(NetClientState *nc, int *id); +NetClientState *net_hub_port_find(int hub_id); + +#define DEFAULT_NETWORK_SCRIPT CONFIG_SYSCONFDIR "/qemu-ifup" +#define DEFAULT_NETWORK_DOWN_SCRIPT CONFIG_SYSCONFDIR "/qemu-ifdown" +#define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper" +#define DEFAULT_BRIDGE_INTERFACE "br0" + +void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd); + +#define POLYNOMIAL_BE 0x04c11db6 +#define POLYNOMIAL_LE 0xedb88320 +uint32_t net_crc32(const uint8_t *p, int len); +uint32_t net_crc32_le(const uint8_t *p, int len); + +#define vmstate_offset_macaddr(_state, _field) \ + vmstate_offset_array(_state, _field.a, uint8_t, \ + sizeof(typeof_field(_state, _field))) + +#define VMSTATE_MACADDR(_field, _state) { \ + .name = (stringify(_field)), \ + .size = sizeof(MACAddr), \ + .info = &vmstate_info_buffer, \ + .flags = VMS_BUFFER, \ + .offset = vmstate_offset_macaddr(_state, _field), \ +} + +static inline bool net_peer_needs_padding(NetClientState *nc) +{ + return nc->peer && !nc->peer->do_not_pad; +} + +#endif |