d6085e3ace
The virtio_net offload APIs are used on the NIC's peer (i.e. the tap device). The API was defined to implicitly use nc->peer, saving the caller the trouble. This wasn't ideal because: 1. There are callers who have the peer but not the NIC. Currently they are forced to bypass the API and access peer->info->... directly. 2. The rest of the net.h API uses nc, not nc->peer, so it is inconsistent. This patch pushes nc->peer back up to callers. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
221 lines
7.9 KiB
C
221 lines
7.9 KiB
C
#ifndef QEMU_NET_H
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#define QEMU_NET_H
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#include "qemu/queue.h"
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#include "qemu-common.h"
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#include "qapi/qmp/qdict.h"
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#include "qemu/option.h"
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#include "net/queue.h"
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#include "migration/vmstate.h"
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#include "qapi-types.h"
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#define MAX_QUEUE_NUM 1024
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/* Maximum GSO packet size (64k) plus plenty of room for
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* the ethernet and virtio_net headers
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*/
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#define NET_BUFSIZE (4096 + 65536)
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struct MACAddr {
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uint8_t a[6];
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};
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/* qdev nic properties */
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typedef struct NICPeers {
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NetClientState *ncs[MAX_QUEUE_NUM];
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} NICPeers;
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typedef struct NICConf {
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MACAddr macaddr;
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NICPeers peers;
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int32_t bootindex;
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int32_t queues;
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} NICConf;
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#define DEFINE_NIC_PROPERTIES(_state, _conf) \
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DEFINE_PROP_MACADDR("mac", _state, _conf.macaddr), \
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DEFINE_PROP_VLAN("vlan", _state, _conf.peers), \
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DEFINE_PROP_NETDEV("netdev", _state, _conf.peers), \
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DEFINE_PROP_INT32("bootindex", _state, _conf.bootindex, -1)
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/* Net clients */
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typedef void (NetPoll)(NetClientState *, bool enable);
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typedef int (NetCanReceive)(NetClientState *);
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typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t);
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typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int);
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typedef void (NetCleanup) (NetClientState *);
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typedef void (LinkStatusChanged)(NetClientState *);
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typedef void (NetClientDestructor)(NetClientState *);
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typedef RxFilterInfo *(QueryRxFilter)(NetClientState *);
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typedef bool (HasUfo)(NetClientState *);
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typedef bool (HasVnetHdr)(NetClientState *);
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typedef bool (HasVnetHdrLen)(NetClientState *, int);
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typedef void (UsingVnetHdr)(NetClientState *, bool);
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typedef void (SetOffload)(NetClientState *, int, int, int, int, int);
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typedef void (SetVnetHdrLen)(NetClientState *, int);
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typedef struct NetClientInfo {
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NetClientOptionsKind type;
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size_t size;
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NetReceive *receive;
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NetReceive *receive_raw;
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NetReceiveIOV *receive_iov;
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NetCanReceive *can_receive;
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NetCleanup *cleanup;
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LinkStatusChanged *link_status_changed;
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QueryRxFilter *query_rx_filter;
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NetPoll *poll;
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HasUfo *has_ufo;
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HasVnetHdr *has_vnet_hdr;
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HasVnetHdrLen *has_vnet_hdr_len;
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UsingVnetHdr *using_vnet_hdr;
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SetOffload *set_offload;
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SetVnetHdrLen *set_vnet_hdr_len;
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} NetClientInfo;
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struct NetClientState {
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NetClientInfo *info;
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int link_down;
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QTAILQ_ENTRY(NetClientState) next;
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NetClientState *peer;
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NetQueue *incoming_queue;
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char *model;
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char *name;
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char info_str[256];
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unsigned receive_disabled : 1;
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NetClientDestructor *destructor;
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unsigned int queue_index;
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unsigned rxfilter_notify_enabled:1;
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};
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typedef struct NICState {
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NetClientState *ncs;
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NICConf *conf;
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void *opaque;
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bool peer_deleted;
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} NICState;
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NetClientState *qemu_find_netdev(const char *id);
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int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
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NetClientOptionsKind type, int max);
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NetClientState *qemu_new_net_client(NetClientInfo *info,
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NetClientState *peer,
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const char *model,
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const char *name);
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NICState *qemu_new_nic(NetClientInfo *info,
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NICConf *conf,
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const char *model,
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const char *name,
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void *opaque);
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void qemu_del_nic(NICState *nic);
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NetClientState *qemu_get_subqueue(NICState *nic, int queue_index);
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NetClientState *qemu_get_queue(NICState *nic);
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NICState *qemu_get_nic(NetClientState *nc);
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void *qemu_get_nic_opaque(NetClientState *nc);
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void qemu_del_net_client(NetClientState *nc);
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NetClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
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const char *client_str);
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typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
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void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
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int qemu_can_send_packet(NetClientState *nc);
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ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov,
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int iovcnt);
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ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov,
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int iovcnt, NetPacketSent *sent_cb);
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void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size);
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ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size);
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ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf,
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int size, NetPacketSent *sent_cb);
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void qemu_purge_queued_packets(NetClientState *nc);
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void qemu_flush_queued_packets(NetClientState *nc);
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void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]);
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bool qemu_has_ufo(NetClientState *nc);
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bool qemu_has_vnet_hdr(NetClientState *nc);
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bool qemu_has_vnet_hdr_len(NetClientState *nc, int len);
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void qemu_using_vnet_hdr(NetClientState *nc, bool enable);
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void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6,
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int ecn, int ufo);
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void qemu_set_vnet_hdr_len(NetClientState *nc, int len);
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void qemu_macaddr_default_if_unset(MACAddr *macaddr);
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int qemu_show_nic_models(const char *arg, const char *const *models);
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void qemu_check_nic_model(NICInfo *nd, const char *model);
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int qemu_find_nic_model(NICInfo *nd, const char * const *models,
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const char *default_model);
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ssize_t qemu_deliver_packet(NetClientState *sender,
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unsigned flags,
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const uint8_t *data,
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size_t size,
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void *opaque);
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ssize_t qemu_deliver_packet_iov(NetClientState *sender,
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unsigned flags,
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const struct iovec *iov,
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int iovcnt,
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void *opaque);
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void print_net_client(Monitor *mon, NetClientState *nc);
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void do_info_network(Monitor *mon, const QDict *qdict);
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/* NIC info */
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#define MAX_NICS 8
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struct NICInfo {
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MACAddr macaddr;
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char *model;
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char *name;
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char *devaddr;
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NetClientState *netdev;
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int used; /* is this slot in nd_table[] being used? */
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int instantiated; /* does this NICInfo correspond to an instantiated NIC? */
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int nvectors;
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};
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extern int nb_nics;
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extern NICInfo nd_table[MAX_NICS];
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extern int default_net;
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/* from net.c */
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extern const char *legacy_tftp_prefix;
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extern const char *legacy_bootp_filename;
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int net_client_init(QemuOpts *opts, int is_netdev, Error **errp);
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int net_client_parse(QemuOptsList *opts_list, const char *str);
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int net_init_clients(void);
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void net_check_clients(void);
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void net_cleanup(void);
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void net_host_device_add(Monitor *mon, const QDict *qdict);
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void net_host_device_remove(Monitor *mon, const QDict *qdict);
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void netdev_add(QemuOpts *opts, Error **errp);
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int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret);
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int net_hub_id_for_client(NetClientState *nc, int *id);
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NetClientState *net_hub_port_find(int hub_id);
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#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
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#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
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#define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
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#define DEFAULT_BRIDGE_INTERFACE "br0"
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void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
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#define POLYNOMIAL 0x04c11db6
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unsigned compute_mcast_idx(const uint8_t *ep);
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#define vmstate_offset_macaddr(_state, _field) \
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vmstate_offset_array(_state, _field.a, uint8_t, \
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sizeof(typeof_field(_state, _field)))
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#define VMSTATE_MACADDR(_field, _state) { \
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.name = (stringify(_field)), \
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.size = sizeof(MACAddr), \
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.info = &vmstate_info_buffer, \
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.flags = VMS_BUFFER, \
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.offset = vmstate_offset_macaddr(_state, _field), \
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}
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#endif
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