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 MAC_FMT "%02X:%02X:%02X:%02X:%02X:%02X"
13#define MAC_ARG(x) ((uint8_t *)(x))[0], ((uint8_t *)(x))[1], \
14 ((uint8_t *)(x))[2], ((uint8_t *)(x))[3], \
15 ((uint8_t *)(x))[4], ((uint8_t *)(x))[5]
16
17#define MAX_QUEUE_NUM 1024
18
19
20
21
22#define NET_BUFSIZE (4096 + 65536)
23
24struct MACAddr {
25 uint8_t a[6];
26};
27
28
29
30typedef struct NICPeers {
31 NetClientState *ncs[MAX_QUEUE_NUM];
32 int32_t queues;
33} NICPeers;
34
35typedef struct NICConf {
36 MACAddr macaddr;
37 NICPeers peers;
38 int32_t bootindex;
39} NICConf;
40
41#define DEFINE_NIC_PROPERTIES(_state, _conf) \
42 DEFINE_PROP_MACADDR("mac", _state, _conf.macaddr), \
43 DEFINE_PROP_VLAN("vlan", _state, _conf.peers), \
44 DEFINE_PROP_NETDEV("netdev", _state, _conf.peers)
45
46
47
48
49typedef void (NetPoll)(NetClientState *, bool enable);
50typedef int (NetCanReceive)(NetClientState *);
51typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t);
52typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int);
53typedef void (NetCleanup) (NetClientState *);
54typedef void (LinkStatusChanged)(NetClientState *);
55typedef void (NetClientDestructor)(NetClientState *);
56typedef RxFilterInfo *(QueryRxFilter)(NetClientState *);
57typedef bool (HasUfo)(NetClientState *);
58typedef bool (HasVnetHdr)(NetClientState *);
59typedef bool (HasVnetHdrLen)(NetClientState *, int);
60typedef void (UsingVnetHdr)(NetClientState *, bool);
61typedef void (SetOffload)(NetClientState *, int, int, int, int, int);
62typedef void (SetVnetHdrLen)(NetClientState *, int);
63typedef int (SetVnetLE)(NetClientState *, bool);
64typedef int (SetVnetBE)(NetClientState *, bool);
65typedef struct SocketReadState SocketReadState;
66typedef void (SocketReadStateFinalize)(SocketReadState *rs);
67
68typedef struct NetClientInfo {
69 NetClientDriver type;
70 size_t size;
71 NetReceive *receive;
72 NetReceive *receive_raw;
73 NetReceiveIOV *receive_iov;
74 NetCanReceive *can_receive;
75 NetCleanup *cleanup;
76 LinkStatusChanged *link_status_changed;
77 QueryRxFilter *query_rx_filter;
78 NetPoll *poll;
79 HasUfo *has_ufo;
80 HasVnetHdr *has_vnet_hdr;
81 HasVnetHdrLen *has_vnet_hdr_len;
82 UsingVnetHdr *using_vnet_hdr;
83 SetOffload *set_offload;
84 SetVnetHdrLen *set_vnet_hdr_len;
85 SetVnetLE *set_vnet_le;
86 SetVnetBE *set_vnet_be;
87} NetClientInfo;
88
89struct NetClientState {
90 NetClientInfo *info;
91 int link_down;
92 QTAILQ_ENTRY(NetClientState) next;
93 NetClientState *peer;
94 NetQueue *incoming_queue;
95 char *model;
96 char *name;
97 char info_str[256];
98 unsigned receive_disabled : 1;
99 NetClientDestructor *destructor;
100 unsigned int queue_index;
101 unsigned rxfilter_notify_enabled:1;
102 int vring_enable;
103 int vnet_hdr_len;
104 QTAILQ_HEAD(NetFilterHead, NetFilterState) filters;
105};
106
107typedef struct NICState {
108 NetClientState *ncs;
109 NICConf *conf;
110 void *opaque;
111 bool peer_deleted;
112} NICState;
113
114struct SocketReadState {
115
116 int state;
117
118 bool vnet_hdr;
119 uint32_t index;
120 uint32_t packet_len;
121 uint32_t vnet_hdr_len;
122 uint8_t buf[NET_BUFSIZE];
123 SocketReadStateFinalize *finalize;
124};
125
126int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size);
127char *qemu_mac_strdup_printf(const uint8_t *macaddr);
128NetClientState *qemu_find_netdev(const char *id);
129int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
130 NetClientDriver type, int max);
131NetClientState *qemu_new_net_client(NetClientInfo *info,
132 NetClientState *peer,
133 const char *model,
134 const char *name);
135NICState *qemu_new_nic(NetClientInfo *info,
136 NICConf *conf,
137 const char *model,
138 const char *name,
139 void *opaque);
140void qemu_del_nic(NICState *nic);
141NetClientState *qemu_get_subqueue(NICState *nic, int queue_index);
142NetClientState *qemu_get_queue(NICState *nic);
143NICState *qemu_get_nic(NetClientState *nc);
144void *qemu_get_nic_opaque(NetClientState *nc);
145void qemu_del_net_client(NetClientState *nc);
146typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
147void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
148int qemu_can_send_packet(NetClientState *nc);
149ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov,
150 int iovcnt);
151ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov,
152 int iovcnt, NetPacketSent *sent_cb);
153void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size);
154ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size);
155ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf,
156 int size, NetPacketSent *sent_cb);
157void qemu_purge_queued_packets(NetClientState *nc);
158void qemu_flush_queued_packets(NetClientState *nc);
159void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]);
160bool qemu_has_ufo(NetClientState *nc);
161bool qemu_has_vnet_hdr(NetClientState *nc);
162bool qemu_has_vnet_hdr_len(NetClientState *nc, int len);
163void qemu_using_vnet_hdr(NetClientState *nc, bool enable);
164void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6,
165 int ecn, int ufo);
166void qemu_set_vnet_hdr_len(NetClientState *nc, int len);
167int qemu_set_vnet_le(NetClientState *nc, bool is_le);
168int qemu_set_vnet_be(NetClientState *nc, bool is_be);
169void qemu_macaddr_default_if_unset(MACAddr *macaddr);
170int qemu_show_nic_models(const char *arg, const char *const *models);
171void qemu_check_nic_model(NICInfo *nd, const char *model);
172int qemu_find_nic_model(NICInfo *nd, const char * const *models,
173 const char *default_model);
174
175ssize_t qemu_deliver_packet_iov(NetClientState *sender,
176 unsigned flags,
177 const struct iovec *iov,
178 int iovcnt,
179 void *opaque);
180
181void print_net_client(Monitor *mon, NetClientState *nc);
182void hmp_info_network(Monitor *mon, const QDict *qdict);
183void net_socket_rs_init(SocketReadState *rs,
184 SocketReadStateFinalize *finalize,
185 bool vnet_hdr);
186
187
188
189#define MAX_NICS 8
190
191struct NICInfo {
192 MACAddr macaddr;
193 char *model;
194 char *name;
195 char *devaddr;
196 NetClientState *netdev;
197 int used;
198 int instantiated;
199 int nvectors;
200};
201
202extern int nb_nics;
203extern NICInfo nd_table[MAX_NICS];
204extern const char *host_net_devices[];
205
206
207extern const char *legacy_tftp_prefix;
208extern const char *legacy_bootp_filename;
209
210int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp);
211int net_client_parse(QemuOptsList *opts_list, const char *str);
212int net_init_clients(void);
213void net_check_clients(void);
214void net_cleanup(void);
215void hmp_host_net_add(Monitor *mon, const QDict *qdict);
216void hmp_host_net_remove(Monitor *mon, const QDict *qdict);
217void netdev_add(QemuOpts *opts, Error **errp);
218void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp);
219
220int net_hub_id_for_client(NetClientState *nc, int *id);
221NetClientState *net_hub_port_find(int hub_id);
222
223#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
224#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
225#define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
226#define DEFAULT_BRIDGE_INTERFACE "br0"
227
228void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
229
230#define POLYNOMIAL 0x04c11db6
231unsigned compute_mcast_idx(const uint8_t *ep);
232
233#define vmstate_offset_macaddr(_state, _field) \
234 vmstate_offset_array(_state, _field.a, uint8_t, \
235 sizeof(typeof_field(_state, _field)))
236
237#define VMSTATE_MACADDR(_field, _state) { \
238 .name = (stringify(_field)), \
239 .size = sizeof(MACAddr), \
240 .info = &vmstate_info_buffer, \
241 .flags = VMS_BUFFER, \
242 .offset = vmstate_offset_macaddr(_state, _field), \
243}
244
245#endif
246
