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 *);
52typedef RxFilterInfo *(QueryRxFilter)(NetClientState *);
53
54typedef struct NetClientInfo {
55 NetClientOptionsKind type;
56 size_t size;
57 NetReceive *receive;
58 NetReceive *receive_raw;
59 NetReceiveIOV *receive_iov;
60 NetCanReceive *can_receive;
61 NetCleanup *cleanup;
62 LinkStatusChanged *link_status_changed;
63 QueryRxFilter *query_rx_filter;
64 NetPoll *poll;
65} NetClientInfo;
66
67struct NetClientState {
68 NetClientInfo *info;
69 int link_down;
70 QTAILQ_ENTRY(NetClientState) next;
71 NetClientState *peer;
72 NetQueue *incoming_queue;
73 char *model;
74 char *name;
75 char info_str[256];
76 unsigned receive_disabled : 1;
77 NetClientDestructor *destructor;
78 unsigned int queue_index;
79 unsigned rxfilter_notify_enabled:1;
80};
81
82typedef struct NICState {
83 NetClientState *ncs;
84 NICConf *conf;
85 void *opaque;
86 bool peer_deleted;
87} NICState;
88
89NetClientState *qemu_find_netdev(const char *id);
90int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
91 NetClientOptionsKind type, int max);
92NetClientState *qemu_new_net_client(NetClientInfo *info,
93 NetClientState *peer,
94 const char *model,
95 const char *name);
96NICState *qemu_new_nic(NetClientInfo *info,
97 NICConf *conf,
98 const char *model,
99 const char *name,
100 void *opaque);
101void qemu_del_nic(NICState *nic);
102NetClientState *qemu_get_subqueue(NICState *nic, int queue_index);
103NetClientState *qemu_get_queue(NICState *nic);
104NICState *qemu_get_nic(NetClientState *nc);
105void *qemu_get_nic_opaque(NetClientState *nc);
106void qemu_del_net_client(NetClientState *nc);
107NetClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
108 const char *client_str);
109typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
110void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
111int qemu_can_send_packet(NetClientState *nc);
112ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov,
113 int iovcnt);
114ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov,
115 int iovcnt, NetPacketSent *sent_cb);
116void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size);
117ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size);
118ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf,
119 int size, NetPacketSent *sent_cb);
120void qemu_purge_queued_packets(NetClientState *nc);
121void qemu_flush_queued_packets(NetClientState *nc);
122void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]);
123void qemu_macaddr_default_if_unset(MACAddr *macaddr);
124int qemu_show_nic_models(const char *arg, const char *const *models);
125void qemu_check_nic_model(NICInfo *nd, const char *model);
126int qemu_find_nic_model(NICInfo *nd, const char * const *models,
127 const char *default_model);
128
129ssize_t qemu_deliver_packet(NetClientState *sender,
130 unsigned flags,
131 const uint8_t *data,
132 size_t size,
133 void *opaque);
134ssize_t qemu_deliver_packet_iov(NetClientState *sender,
135 unsigned flags,
136 const struct iovec *iov,
137 int iovcnt,
138 void *opaque);
139
140void print_net_client(Monitor *mon, NetClientState *nc);
141void do_info_network(Monitor *mon, const QDict *qdict);
142
143
144
145#define MAX_NICS 8
146
147struct NICInfo {
148 MACAddr macaddr;
149 char *model;
150 char *name;
151 char *devaddr;
152 NetClientState *netdev;
153 int used;
154 int instantiated;
155 int nvectors;
156};
157
158extern int nb_nics;
159extern NICInfo nd_table[MAX_NICS];
160extern int default_net;
161
162
163extern const char *legacy_tftp_prefix;
164extern const char *legacy_bootp_filename;
165
166int net_client_init(QemuOpts *opts, int is_netdev, Error **errp);
167int net_client_parse(QemuOptsList *opts_list, const char *str);
168int net_init_clients(void);
169void net_check_clients(void);
170void net_cleanup(void);
171void net_host_device_add(Monitor *mon, const QDict *qdict);
172void net_host_device_remove(Monitor *mon, const QDict *qdict);
173void netdev_add(QemuOpts *opts, Error **errp);
174int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret);
175
176int net_hub_id_for_client(NetClientState *nc, int *id);
177NetClientState *net_hub_port_find(int hub_id);
178
179#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
180#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
181#define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
182#define DEFAULT_BRIDGE_INTERFACE "br0"
183
184void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
185
186#define POLYNOMIAL 0x04c11db6
187unsigned compute_mcast_idx(const uint8_t *ep);
188
189#define vmstate_offset_macaddr(_state, _field) \
190 vmstate_offset_array(_state, _field.a, uint8_t, \
191 sizeof(typeof_field(_state, _field)))
192
193#define VMSTATE_MACADDR(_field, _state) { \
194 .name = (stringify(_field)), \
195 .size = sizeof(MACAddr), \
196 .info = &vmstate_info_buffer, \
197 .flags = VMS_BUFFER, \
198 .offset = vmstate_offset_macaddr(_state, _field), \
199}
200
201#endif
202
