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
15
16
17#define NET_BUFSIZE (4096 + 65536)
18
19struct MACAddr {
20 uint8_t a[6];
21};
22
23
24
25typedef struct NICPeers {
26 NetClientState *ncs[MAX_QUEUE_NUM];
27} NICPeers;
28
29typedef struct NICConf {
30 MACAddr macaddr;
31 NICPeers peers;
32 int32_t bootindex;
33 int32_t queues;
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 DEFINE_PROP_INT32("bootindex", _state, _conf.bootindex, -1)
41
42
43
44
45typedef void (NetPoll)(NetClientState *, bool enable);
46typedef int (NetCanReceive)(NetClientState *);
47typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t);
48typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int);
49typedef void (NetCleanup) (NetClientState *);
50typedef void (LinkStatusChanged)(NetClientState *);
51typedef void (NetClientDestructor)(NetClientState *);
52
53typedef struct NetClientInfo {
54 NetClientOptionsKind type;
55 size_t size;
56 NetReceive *receive;
57 NetReceive *receive_raw;
58 NetReceiveIOV *receive_iov;
59 NetCanReceive *can_receive;
60 NetCleanup *cleanup;
61 LinkStatusChanged *link_status_changed;
62 NetPoll *poll;
63} NetClientInfo;
64
65struct NetClientState {
66 NetClientInfo *info;
67 int link_down;
68 QTAILQ_ENTRY(NetClientState) next;
69 NetClientState *peer;
70 NetQueue *send_queue;
71 char *model;
72 char *name;
73 char info_str[256];
74 unsigned receive_disabled : 1;
75 NetClientDestructor *destructor;
76 unsigned int queue_index;
77};
78
79typedef struct NICState {
80 NetClientState *ncs;
81 NICConf *conf;
82 void *opaque;
83 bool peer_deleted;
84} NICState;
85
86NetClientState *qemu_find_netdev(const char *id);
87int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
88 NetClientOptionsKind type, int max);
89NetClientState *qemu_new_net_client(NetClientInfo *info,
90 NetClientState *peer,
91 const char *model,
92 const char *name);
93NICState *qemu_new_nic(NetClientInfo *info,
94 NICConf *conf,
95 const char *model,
96 const char *name,
97 void *opaque);
98void qemu_del_nic(NICState *nic);
99NetClientState *qemu_get_subqueue(NICState *nic, int queue_index);
100NetClientState *qemu_get_queue(NICState *nic);
101NICState *qemu_get_nic(NetClientState *nc);
102void *qemu_get_nic_opaque(NetClientState *nc);
103void qemu_del_net_client(NetClientState *nc);
104NetClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
105 const char *client_str);
106typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
107void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
108int qemu_can_send_packet(NetClientState *nc);
109ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov,
110 int iovcnt);
111ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov,
112 int iovcnt, NetPacketSent *sent_cb);
113void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size);
114ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size);
115ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf,
116 int size, NetPacketSent *sent_cb);
117void qemu_purge_queued_packets(NetClientState *nc);
118void qemu_flush_queued_packets(NetClientState *nc);
119void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]);
120void qemu_macaddr_default_if_unset(MACAddr *macaddr);
121int qemu_show_nic_models(const char *arg, const char *const *models);
122void qemu_check_nic_model(NICInfo *nd, const char *model);
123int qemu_find_nic_model(NICInfo *nd, const char * const *models,
124 const char *default_model);
125
126ssize_t qemu_deliver_packet(NetClientState *sender,
127 unsigned flags,
128 const uint8_t *data,
129 size_t size,
130 void *opaque);
131ssize_t qemu_deliver_packet_iov(NetClientState *sender,
132 unsigned flags,
133 const struct iovec *iov,
134 int iovcnt,
135 void *opaque);
136
137void print_net_client(Monitor *mon, NetClientState *nc);
138void do_info_network(Monitor *mon, const QDict *qdict);
139
140
141
142#define MAX_NICS 8
143
144struct NICInfo {
145 MACAddr macaddr;
146 char *model;
147 char *name;
148 char *devaddr;
149 NetClientState *netdev;
150 int used;
151 int instantiated;
152 int nvectors;
153};
154
155extern int nb_nics;
156extern NICInfo nd_table[MAX_NICS];
157extern int default_net;
158
159
160extern const char *legacy_tftp_prefix;
161extern const char *legacy_bootp_filename;
162
163int net_client_init(QemuOpts *opts, int is_netdev, Error **errp);
164int net_client_parse(QemuOptsList *opts_list, const char *str);
165int net_init_clients(void);
166void net_check_clients(void);
167void net_cleanup(void);
168void net_host_device_add(Monitor *mon, const QDict *qdict);
169void net_host_device_remove(Monitor *mon, const QDict *qdict);
170void netdev_add(QemuOpts *opts, Error **errp);
171int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret);
172
173int net_hub_id_for_client(NetClientState *nc, int *id);
174NetClientState *net_hub_port_find(int hub_id);
175
176#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
177#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
178#define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
179#define DEFAULT_BRIDGE_INTERFACE "br0"
180
181void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
182
183#define POLYNOMIAL 0x04c11db6
184unsigned compute_mcast_idx(const uint8_t *ep);
185
186#define vmstate_offset_macaddr(_state, _field) \
187 vmstate_offset_array(_state, _field.a, uint8_t, \
188 sizeof(typeof_field(_state, _field)))
189
190#define VMSTATE_MACADDR(_field, _state) { \
191 .name = (stringify(_field)), \
192 .size = sizeof(MACAddr), \
193 .info = &vmstate_info_buffer, \
194 .flags = VMS_BUFFER, \
195 .offset = vmstate_offset_macaddr(_state, _field), \
196}
197
198#endif
199
