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 QTAILQ_HEAD(NetFilterHead, NetFilterState) filters;
104};
105
106typedef struct NICState {
107 NetClientState *ncs;
108 NICConf *conf;
109 void *opaque;
110 bool peer_deleted;
111} NICState;
112
113struct SocketReadState {
114 int state;
115 uint32_t index;
116 uint32_t packet_len;
117 uint8_t buf[NET_BUFSIZE];
118 SocketReadStateFinalize *finalize;
119};
120
121int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size);
122char *qemu_mac_strdup_printf(const uint8_t *macaddr);
123NetClientState *qemu_find_netdev(const char *id);
124int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
125 NetClientDriver type, int max);
126NetClientState *qemu_new_net_client(NetClientInfo *info,
127 NetClientState *peer,
128 const char *model,
129 const char *name);
130NICState *qemu_new_nic(NetClientInfo *info,
131 NICConf *conf,
132 const char *model,
133 const char *name,
134 void *opaque);
135void qemu_del_nic(NICState *nic);
136NetClientState *qemu_get_subqueue(NICState *nic, int queue_index);
137NetClientState *qemu_get_queue(NICState *nic);
138NICState *qemu_get_nic(NetClientState *nc);
139void *qemu_get_nic_opaque(NetClientState *nc);
140void qemu_del_net_client(NetClientState *nc);
141typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
142void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
143int qemu_can_send_packet(NetClientState *nc);
144ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov,
145 int iovcnt);
146ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov,
147 int iovcnt, NetPacketSent *sent_cb);
148void qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size);
149ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size);
150ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf,
151 int size, NetPacketSent *sent_cb);
152void qemu_purge_queued_packets(NetClientState *nc);
153void qemu_flush_queued_packets(NetClientState *nc);
154void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]);
155bool qemu_has_ufo(NetClientState *nc);
156bool qemu_has_vnet_hdr(NetClientState *nc);
157bool qemu_has_vnet_hdr_len(NetClientState *nc, int len);
158void qemu_using_vnet_hdr(NetClientState *nc, bool enable);
159void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6,
160 int ecn, int ufo);
161void qemu_set_vnet_hdr_len(NetClientState *nc, int len);
162int qemu_set_vnet_le(NetClientState *nc, bool is_le);
163int qemu_set_vnet_be(NetClientState *nc, bool is_be);
164void qemu_macaddr_default_if_unset(MACAddr *macaddr);
165int qemu_show_nic_models(const char *arg, const char *const *models);
166void qemu_check_nic_model(NICInfo *nd, const char *model);
167int qemu_find_nic_model(NICInfo *nd, const char * const *models,
168 const char *default_model);
169
170ssize_t qemu_deliver_packet_iov(NetClientState *sender,
171 unsigned flags,
172 const struct iovec *iov,
173 int iovcnt,
174 void *opaque);
175
176void print_net_client(Monitor *mon, NetClientState *nc);
177void hmp_info_network(Monitor *mon, const QDict *qdict);
178void net_socket_rs_init(SocketReadState *rs,
179 SocketReadStateFinalize *finalize);
180
181
182
183#define MAX_NICS 8
184
185struct NICInfo {
186 MACAddr macaddr;
187 char *model;
188 char *name;
189 char *devaddr;
190 NetClientState *netdev;
191 int used;
192 int instantiated;
193 int nvectors;
194};
195
196extern int nb_nics;
197extern NICInfo nd_table[MAX_NICS];
198extern const char *host_net_devices[];
199
200
201extern const char *legacy_tftp_prefix;
202extern const char *legacy_bootp_filename;
203
204int net_client_init(QemuOpts *opts, bool is_netdev, Error **errp);
205int net_client_parse(QemuOptsList *opts_list, const char *str);
206int net_init_clients(void);
207void net_check_clients(void);
208void net_cleanup(void);
209void hmp_host_net_add(Monitor *mon, const QDict *qdict);
210void hmp_host_net_remove(Monitor *mon, const QDict *qdict);
211void netdev_add(QemuOpts *opts, Error **errp);
212void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp);
213
214int net_hub_id_for_client(NetClientState *nc, int *id);
215NetClientState *net_hub_port_find(int hub_id);
216
217#define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
218#define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
219#define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
220#define DEFAULT_BRIDGE_INTERFACE "br0"
221
222void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
223
224#define POLYNOMIAL 0x04c11db6
225unsigned compute_mcast_idx(const uint8_t *ep);
226
227#define vmstate_offset_macaddr(_state, _field) \
228 vmstate_offset_array(_state, _field.a, uint8_t, \
229 sizeof(typeof_field(_state, _field)))
230
231#define VMSTATE_MACADDR(_field, _state) { \
232 .name = (stringify(_field)), \
233 .size = sizeof(MACAddr), \
234 .info = &vmstate_info_buffer, \
235 .flags = VMS_BUFFER, \
236 .offset = vmstate_offset_macaddr(_state, _field), \
237}
238
239#endif
240
