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net: net_client_init(): use error_set()
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1 #ifndef QEMU_NET_H
2 #define QEMU_NET_H
3
4 #include "qemu-queue.h"
5 #include "qemu-common.h"
6 #include "qdict.h"
7 #include "qemu-option.h"
8 #include "net/queue.h"
9 #include "vmstate.h"
10
11 struct MACAddr {
12     uint8_t a[6];
13 };
14
15 /* qdev nic properties */
16
17 typedef struct NICConf {
18     MACAddr macaddr;
19     VLANState *vlan;
20     VLANClientState *peer;
21     int32_t bootindex;
22 } NICConf;
23
24 #define DEFINE_NIC_PROPERTIES(_state, _conf)                            \
25     DEFINE_PROP_MACADDR("mac",   _state, _conf.macaddr),                \
26     DEFINE_PROP_VLAN("vlan",     _state, _conf.vlan),                   \
27     DEFINE_PROP_NETDEV("netdev", _state, _conf.peer),                   \
28     DEFINE_PROP_INT32("bootindex", _state, _conf.bootindex, -1)
29
30 /* VLANs support */
31
32 typedef enum {
33     NET_CLIENT_TYPE_NONE,
34     NET_CLIENT_TYPE_NIC,
35     NET_CLIENT_TYPE_USER,
36     NET_CLIENT_TYPE_TAP,
37     NET_CLIENT_TYPE_SOCKET,
38     NET_CLIENT_TYPE_VDE,
39     NET_CLIENT_TYPE_DUMP,
40     NET_CLIENT_TYPE_BRIDGE,
41
42     NET_CLIENT_TYPE_MAX
43 } net_client_type;
44
45 typedef void (NetPoll)(VLANClientState *, bool enable);
46 typedef int (NetCanReceive)(VLANClientState *);
47 typedef ssize_t (NetReceive)(VLANClientState *, const uint8_t *, size_t);
48 typedef ssize_t (NetReceiveIOV)(VLANClientState *, const struct iovec *, int);
49 typedef void (NetCleanup) (VLANClientState *);
50 typedef void (LinkStatusChanged)(VLANClientState *);
51
52 typedef struct NetClientInfo {
53     net_client_type type;
54     size_t size;
55     NetReceive *receive;
56     NetReceive *receive_raw;
57     NetReceiveIOV *receive_iov;
58     NetCanReceive *can_receive;
59     NetCleanup *cleanup;
60     LinkStatusChanged *link_status_changed;
61     NetPoll *poll;
62 } NetClientInfo;
63
64 struct VLANClientState {
65     NetClientInfo *info;
66     int link_down;
67     QTAILQ_ENTRY(VLANClientState) next;
68     struct VLANState *vlan;
69     VLANClientState *peer;
70     NetQueue *send_queue;
71     char *model;
72     char *name;
73     char info_str[256];
74     unsigned receive_disabled : 1;
75 };
76
77 typedef struct NICState {
78     VLANClientState nc;
79     NICConf *conf;
80     void *opaque;
81     bool peer_deleted;
82 } NICState;
83
84 struct VLANState {
85     int id;
86     QTAILQ_HEAD(, VLANClientState) clients;
87     QTAILQ_ENTRY(VLANState) next;
88     NetQueue *send_queue;
89 };
90
91 VLANState *qemu_find_vlan(int id, int allocate);
92 VLANClientState *qemu_find_netdev(const char *id);
93 VLANClientState *qemu_new_net_client(NetClientInfo *info,
94                                      VLANState *vlan,
95                                      VLANClientState *peer,
96                                      const char *model,
97                                      const char *name);
98 NICState *qemu_new_nic(NetClientInfo *info,
99                        NICConf *conf,
100                        const char *model,
101                        const char *name,
102                        void *opaque);
103 void qemu_del_vlan_client(VLANClientState *vc);
104 VLANClientState *qemu_find_vlan_client_by_name(Monitor *mon, int vlan_id,
105                                                const char *client_str);
106 typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
107 void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
108 int qemu_can_send_packet(VLANClientState *vc);
109 ssize_t qemu_sendv_packet(VLANClientState *vc, const struct iovec *iov,
110                           int iovcnt);
111 ssize_t qemu_sendv_packet_async(VLANClientState *vc, const struct iovec *iov,
112                                 int iovcnt, NetPacketSent *sent_cb);
113 void qemu_send_packet(VLANClientState *vc, const uint8_t *buf, int size);
114 ssize_t qemu_send_packet_raw(VLANClientState *vc, const uint8_t *buf, int size);
115 ssize_t qemu_send_packet_async(VLANClientState *vc, const uint8_t *buf,
116                                int size, NetPacketSent *sent_cb);
117 void qemu_purge_queued_packets(VLANClientState *vc);
118 void qemu_flush_queued_packets(VLANClientState *vc);
119 void qemu_format_nic_info_str(VLANClientState *vc, uint8_t macaddr[6]);
120 void qemu_macaddr_default_if_unset(MACAddr *macaddr);
121 int qemu_show_nic_models(const char *arg, const char *const *models);
122 void qemu_check_nic_model(NICInfo *nd, const char *model);
123 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
124                         const char *default_model);
125
126 void do_info_network(Monitor *mon);
127
128 /* NIC info */
129
130 #define MAX_NICS 8
131
132 struct NICInfo {
133     MACAddr macaddr;
134     char *model;
135     char *name;
136     char *devaddr;
137     VLANState *vlan;
138     VLANClientState *netdev;
139     int used;         /* is this slot in nd_table[] being used? */
140     int instantiated; /* does this NICInfo correspond to an instantiated NIC? */
141     int nvectors;
142 };
143
144 extern int nb_nics;
145 extern NICInfo nd_table[MAX_NICS];
146 extern int default_net;
147
148 /* BT HCI info */
149
150 struct HCIInfo {
151     int (*bdaddr_set)(struct HCIInfo *hci, const uint8_t *bd_addr);
152     void (*cmd_send)(struct HCIInfo *hci, const uint8_t *data, int len);
153     void (*sco_send)(struct HCIInfo *hci, const uint8_t *data, int len);
154     void (*acl_send)(struct HCIInfo *hci, const uint8_t *data, int len);
155     void *opaque;
156     void (*evt_recv)(void *opaque, const uint8_t *data, int len);
157     void (*acl_recv)(void *opaque, const uint8_t *data, int len);
158 };
159
160 struct HCIInfo *qemu_next_hci(void);
161
162 /* from net.c */
163 extern const char *legacy_tftp_prefix;
164 extern const char *legacy_bootp_filename;
165
166 int net_client_init(QemuOpts *opts, int is_netdev, Error **errp);
167 int net_client_parse(QemuOptsList *opts_list, const char *str);
168 int net_init_clients(void);
169 void net_check_clients(void);
170 void net_cleanup(void);
171 void net_host_device_add(Monitor *mon, const QDict *qdict);
172 void net_host_device_remove(Monitor *mon, const QDict *qdict);
173 int do_netdev_add(Monitor *mon, const QDict *qdict, QObject **ret_data);
174 int do_netdev_del(Monitor *mon, const QDict *qdict, QObject **ret_data);
175
176 #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup"
177 #define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown"
178 #define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
179 #define DEFAULT_BRIDGE_INTERFACE "br0"
180
181 void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
182
183 int net_handle_fd_param(Monitor *mon, const char *param);
184
185 #define POLYNOMIAL 0x04c11db6
186 unsigned compute_mcast_idx(const uint8_t *ep);
187
188 #define vmstate_offset_macaddr(_state, _field)                       \
189     vmstate_offset_array(_state, _field.a, uint8_t,                \
190                          sizeof(typeof_field(_state, _field)))
191
192 #define VMSTATE_MACADDR(_field, _state) {                            \
193     .name       = (stringify(_field)),                               \
194     .size       = sizeof(MACAddr),                                   \
195     .info       = &vmstate_info_buffer,                              \
196     .flags      = VMS_BUFFER,                                        \
197     .offset     = vmstate_offset_macaddr(_state, _field),            \
198 }
199
200 #endif
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