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 int32_t queues;
28} NICPeers;
29
30typedef struct NICConf {
31 MACAddr macaddr;
32 NICPeers peers;
33 int32_t bootindex;
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
41
42
43
44typedef void (NetPoll)(NetClientState *, bool enable);
45typedef int (NetCanReceive)(NetClientState *);
46typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t);
47typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int);
48typedef void (NetCleanup) (NetClientState *);
49typedef void (LinkStatusChanged)(NetClientState *);
50typedef void (NetClientDestructor)(NetClientState *);
51typedef RxFilterInfo *(QueryRxFilter)(NetClientState *);
52typedef bool (HasUfo)(NetClientState *);
53typedef bool (HasVnetHdr)(NetClientState *);
54typedef bool (HasVnetHdrLen)(NetClientState *, int);
55typedef void (UsingVnetHdr)(NetClientState *, bool);
56typedef void (SetOffload)(NetClientState *, int, int, int, int, int);
57typedef void (SetVnetHdrLen)(NetClientState *, int);
58typedef int (SetVnetLE)(NetClientState *, bool);
59typedef int (SetVnetBE)(NetClientState *, bool);
60
61typedef struct NetClientInfo {
62 NetClientOptionsKind type;
63 size_t size;
64 NetReceive *receive;
65 NetReceive *receive_raw;
66 NetReceiveIOV *receive_iov;
67 NetCanReceive *can_receive;
68 NetCleanup *cleanup;
69 LinkStatusChanged *link_status_changed;
70 QueryRxFilter *query_rx_filter;
71 NetPoll *poll;
72 HasUfo *has_ufo;
73 HasVnetHdr *has_vnet_hdr;
74 HasVnetHdrLen *has_vnet_hdr_len;
75 UsingVnetHdr *using_vnet_hdr;
76 SetOffload *set_offload;
77 SetVnetHdrLen *set_vnet_hdr_len;
78 SetVnetLE *set_vnet_le;
79 SetVnetBE *set_vnet_be;
80} NetClientInfo;
81
82struct NetClientState {
83 NetClientInfo *info;
84 int link_down;
85 QTAILQ_ENTRY(NetClientState) next;
86 NetClientState *peer;
87 NetQueue *incoming_queue;
88 char *model;
89 char *name;
90 char info_str[256];
91 unsigned receive_disabled : 1;
92 NetClientDestructor *destructor;
93 unsigned int queue_index;
94 unsigned rxfilter_notify_enabled:1;
95 QTAILQ_HEAD(NetFilterHead, NetFilterState) filters;
96};
97
98typedef struct NICState {
99 NetClientState *ncs;
100 NICConf *conf;
101 void *opaque;
102 bool peer_deleted;
103} NICState;
104
105char *qemu_mac_strdup_printf(const uint8_t *macaddr);
106NetClientState *qemu_find_netdev(const char *id);
107int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
108 NetClientOptionsKind type, int max);
109NetClientState *qemu_new_net_client(NetClientInfo *info,
110 NetClientState *peer,
111 const char *model,
112 const char *name);
113NICState *qemu_new_nic(NetClientInfo *info,
114 NICConf *conf,
115 const char *model,
116 const char *name,
117 void *opaque);
118void qemu_del_nic(NICState *nic);
119NetClientState *qemu_get_subqueue(NICState *nic, int queue_index);
120NetClientState *qemu_get_queue(NICState *nic);
121NICState *qemu_get_nic(NetClientState *nc);
122void *qemu_get_nic_opaque(NetClientState *nc);
123void qemu_del_net_client(NetClientState *nc);
124NetClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
125 const char *client_str);
126typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
127void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
128int qemu_can_send_packet(NetClientState *nc);
129ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov,
130 int iovcnt);
131ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov,
132 int iovcnt, NetPacketSent *sent_cb);
133void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size);
134ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size);
135ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf,
136 int size, NetPacketSent *sent_cb);
137void qemu_purge_queued_packets(NetClientState *nc);
138void qemu_flush_queued_packets(NetClientState *nc);
139void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]);
140bool qemu_has_ufo(NetClientState *nc);
141bool qemu_has_vnet_hdr(NetClientState *nc);
142bool qemu_has_vnet_hdr_len(NetClientState *nc, int len);
143void qemu_using_vnet_hdr(NetClientState *nc, bool enable);
144void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6,
145 int ecn, int ufo);
146void qemu_set_vnet_hdr_len(NetClientState *nc, int len);
147int qemu_set_vnet_le(NetClientState *nc, bool is_le);
148int qemu_set_vnet_be(NetClientState *nc, bool is_be);
149void qemu_macaddr_default_if_unset(MACAddr *macaddr);
150int qemu_show_nic_models(const char *arg, const char *const *models);
151void qemu_check_nic_model(NICInfo *nd, const char *model);
152int qemu_find_nic_model(NICInfo *nd, const char * const *models,
153 const char *default_model);
154
155ssize_t qemu_deliver_packet_iov(NetClientState *sender,
156 unsigned flags,
157 const struct iovec *iov,
158 int iovcnt,
159 void *opaque);
160
161void print_net_client(Monitor *mon, NetClientState *nc);
162void hmp_info_network(Monitor *mon, const QDict *qdict);
163
164
165
166#define MAX_NICS 8
167
168struct NICInfo {
169 MACAddr macaddr;
170 char *model;
171 char *name;
172 char *devaddr;
173 NetClientState *netdev;
174 int used;
175 int instantiated;
176 int nvectors;
177};
178
179extern int nb_nics;
180extern NICInfo nd_table[MAX_NICS];
181extern int default_net;
182extern const char *host_net_devices[];
183
184
185extern const char *legacy_tftp_prefix;
186extern const char *legacy_bootp_filename;
187
188int net_client_init(QemuOpts *opts, int is_netdev, Error **errp);
189int net_client_parse(QemuOptsList *opts_list, const char *str);
190int net_init_clients(void);
191void net_check_clients(void);
192void net_cleanup(void);
193void hmp_host_net_add(Monitor *mon, const QDict *qdict);
194void hmp_host_net_remove(Monitor *mon, const QDict *qdict);
195void netdev_add(QemuOpts *opts, Error **errp);
196void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp);
197
198int net_hub_id_for_client(NetClientState *nc, int *id);
199NetClientState *net_hub_port_find(int hub_id);
200
201#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
202#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
203#define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
204#define DEFAULT_BRIDGE_INTERFACE "br0"
205
206void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
207
208#define POLYNOMIAL 0x04c11db6
209unsigned compute_mcast_idx(const uint8_t *ep);
210
211#define vmstate_offset_macaddr(_state, _field) \
212 vmstate_offset_array(_state, _field.a, uint8_t, \
213 sizeof(typeof_field(_state, _field)))
214
215#define VMSTATE_MACADDR(_field, _state) { \
216 .name = (stringify(_field)), \
217 .size = sizeof(MACAddr), \
218 .info = &vmstate_info_buffer, \
219 .flags = VMS_BUFFER, \
220 .offset = vmstate_offset_macaddr(_state, _field), \
221}
222
223#endif
224
