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
14struct MACAddr {
15 uint8_t a[6];
16};
17
18
19
20typedef struct NICPeers {
21 NetClientState *ncs[MAX_QUEUE_NUM];
22} NICPeers;
23
24typedef struct NICConf {
25 MACAddr macaddr;
26 NICPeers peers;
27 int32_t bootindex;
28 int32_t queues;
29} NICConf;
30
31#define DEFINE_NIC_PROPERTIES(_state, _conf) \
32 DEFINE_PROP_MACADDR("mac", _state, _conf.macaddr), \
33 DEFINE_PROP_VLAN("vlan", _state, _conf.peers), \
34 DEFINE_PROP_NETDEV("netdev", _state, _conf.peers), \
35 DEFINE_PROP_INT32("bootindex", _state, _conf.bootindex, -1)
36
37
38
39
40typedef void (NetPoll)(NetClientState *, bool enable);
41typedef int (NetCanReceive)(NetClientState *);
42typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t);
43typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int);
44typedef void (NetCleanup) (NetClientState *);
45typedef void (LinkStatusChanged)(NetClientState *);
46typedef void (NetClientDestructor)(NetClientState *);
47
48typedef struct NetClientInfo {
49 NetClientOptionsKind type;
50 size_t size;
51 NetReceive *receive;
52 NetReceive *receive_raw;
53 NetReceiveIOV *receive_iov;
54 NetCanReceive *can_receive;
55 NetCleanup *cleanup;
56 LinkStatusChanged *link_status_changed;
57 NetPoll *poll;
58} NetClientInfo;
59
60struct NetClientState {
61 NetClientInfo *info;
62 int link_down;
63 QTAILQ_ENTRY(NetClientState) next;
64 NetClientState *peer;
65 NetQueue *send_queue;
66 char *model;
67 char *name;
68 char info_str[256];
69 unsigned receive_disabled : 1;
70 NetClientDestructor *destructor;
71 unsigned int queue_index;
72};
73
74typedef struct NICState {
75 NetClientState *ncs;
76 NICConf *conf;
77 void *opaque;
78 bool peer_deleted;
79} NICState;
80
81NetClientState *qemu_find_netdev(const char *id);
82int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
83 NetClientOptionsKind type, int max);
84NetClientState *qemu_new_net_client(NetClientInfo *info,
85 NetClientState *peer,
86 const char *model,
87 const char *name);
88NICState *qemu_new_nic(NetClientInfo *info,
89 NICConf *conf,
90 const char *model,
91 const char *name,
92 void *opaque);
93void qemu_del_nic(NICState *nic);
94NetClientState *qemu_get_subqueue(NICState *nic, int queue_index);
95NetClientState *qemu_get_queue(NICState *nic);
96NICState *qemu_get_nic(NetClientState *nc);
97void *qemu_get_nic_opaque(NetClientState *nc);
98void qemu_del_net_client(NetClientState *nc);
99NetClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
100 const char *client_str);
101typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
102void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
103int qemu_can_send_packet(NetClientState *nc);
104ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov,
105 int iovcnt);
106ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov,
107 int iovcnt, NetPacketSent *sent_cb);
108void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size);
109ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size);
110ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf,
111 int size, NetPacketSent *sent_cb);
112void qemu_purge_queued_packets(NetClientState *nc);
113void qemu_flush_queued_packets(NetClientState *nc);
114void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]);
115void qemu_macaddr_default_if_unset(MACAddr *macaddr);
116int qemu_show_nic_models(const char *arg, const char *const *models);
117void qemu_check_nic_model(NICInfo *nd, const char *model);
118int qemu_find_nic_model(NICInfo *nd, const char * const *models,
119 const char *default_model);
120
121ssize_t qemu_deliver_packet(NetClientState *sender,
122 unsigned flags,
123 const uint8_t *data,
124 size_t size,
125 void *opaque);
126ssize_t qemu_deliver_packet_iov(NetClientState *sender,
127 unsigned flags,
128 const struct iovec *iov,
129 int iovcnt,
130 void *opaque);
131
132void print_net_client(Monitor *mon, NetClientState *nc);
133void do_info_network(Monitor *mon, const QDict *qdict);
134
135
136
137#define MAX_NICS 8
138
139struct NICInfo {
140 MACAddr macaddr;
141 char *model;
142 char *name;
143 char *devaddr;
144 NetClientState *netdev;
145 int used;
146 int instantiated;
147 int nvectors;
148};
149
150extern int nb_nics;
151extern NICInfo nd_table[MAX_NICS];
152extern int default_net;
153
154
155extern const char *legacy_tftp_prefix;
156extern const char *legacy_bootp_filename;
157
158int net_client_init(QemuOpts *opts, int is_netdev, Error **errp);
159int net_client_parse(QemuOptsList *opts_list, const char *str);
160int net_init_clients(void);
161void net_check_clients(void);
162void net_cleanup(void);
163void net_host_device_add(Monitor *mon, const QDict *qdict);
164void net_host_device_remove(Monitor *mon, const QDict *qdict);
165void netdev_add(QemuOpts *opts, Error **errp);
166int qmp_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret);
167
168int net_hub_id_for_client(NetClientState *nc, int *id);
169NetClientState *net_hub_port_find(int hub_id);
170
171#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
172#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
173#define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
174#define DEFAULT_BRIDGE_INTERFACE "br0"
175
176void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
177
178#define POLYNOMIAL 0x04c11db6
179unsigned compute_mcast_idx(const uint8_t *ep);
180
181#define vmstate_offset_macaddr(_state, _field) \
182 vmstate_offset_array(_state, _field.a, uint8_t, \
183 sizeof(typeof_field(_state, _field)))
184
185#define VMSTATE_MACADDR(_field, _state) { \
186 .name = (stringify(_field)), \
187 .size = sizeof(MACAddr), \
188 .info = &vmstate_info_buffer, \
189 .flags = VMS_BUFFER, \
190 .offset = vmstate_offset_macaddr(_state, _field), \
191}
192
193#endif
194
