1 | #ifndef QEMU_NET_H |
2 | #define QEMU_NET_H |
3 | |
4 | #include "qemu/queue.h" |
5 | #include "qapi/qapi-types-net.h" |
6 | #include "net/queue.h" |
7 | |
8 | #define MAC_FMT "%02X:%02X:%02X:%02X:%02X:%02X" |
9 | #define MAC_ARG(x) ((uint8_t *)(x))[0], ((uint8_t *)(x))[1], \ |
10 | ((uint8_t *)(x))[2], ((uint8_t *)(x))[3], \ |
11 | ((uint8_t *)(x))[4], ((uint8_t *)(x))[5] |
12 | |
13 | #define MAX_QUEUE_NUM 1024 |
14 | |
15 | /* Maximum GSO packet size (64k) plus plenty of room for |
16 | * the ethernet and virtio_net headers |
17 | */ |
18 | #define NET_BUFSIZE (4096 + 65536) |
19 | |
20 | struct MACAddr { |
21 | uint8_t a[6]; |
22 | }; |
23 | |
24 | /* qdev nic properties */ |
25 | |
26 | typedef struct NICPeers { |
27 | NetClientState *ncs[MAX_QUEUE_NUM]; |
28 | int32_t queues; |
29 | } NICPeers; |
30 | |
31 | typedef struct NICConf { |
32 | MACAddr macaddr; |
33 | NICPeers peers; |
34 | int32_t bootindex; |
35 | } NICConf; |
36 | |
37 | #define DEFINE_NIC_PROPERTIES(_state, _conf) \ |
38 | DEFINE_PROP_MACADDR("mac", _state, _conf.macaddr), \ |
39 | DEFINE_PROP_NETDEV("netdev", _state, _conf.peers) |
40 | |
41 | |
42 | /* Net clients */ |
43 | |
44 | typedef void (NetPoll)(NetClientState *, bool enable); |
45 | typedef int (NetCanReceive)(NetClientState *); |
46 | typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t); |
47 | typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int); |
48 | typedef void (NetCleanup) (NetClientState *); |
49 | typedef void (LinkStatusChanged)(NetClientState *); |
50 | typedef void (NetClientDestructor)(NetClientState *); |
51 | typedef RxFilterInfo *(QueryRxFilter)(NetClientState *); |
52 | typedef bool (HasUfo)(NetClientState *); |
53 | typedef bool (HasVnetHdr)(NetClientState *); |
54 | typedef bool (HasVnetHdrLen)(NetClientState *, int); |
55 | typedef void (UsingVnetHdr)(NetClientState *, bool); |
56 | typedef void (SetOffload)(NetClientState *, int, int, int, int, int); |
57 | typedef void (SetVnetHdrLen)(NetClientState *, int); |
58 | typedef int (SetVnetLE)(NetClientState *, bool); |
59 | typedef int (SetVnetBE)(NetClientState *, bool); |
60 | typedef struct SocketReadState SocketReadState; |
61 | typedef void (SocketReadStateFinalize)(SocketReadState *rs); |
62 | typedef void (NetAnnounce)(NetClientState *); |
63 | |
64 | typedef struct NetClientInfo { |
65 | NetClientDriver type; |
66 | size_t size; |
67 | NetReceive *receive; |
68 | NetReceive *receive_raw; |
69 | NetReceiveIOV *receive_iov; |
70 | NetCanReceive *can_receive; |
71 | NetCleanup *cleanup; |
72 | LinkStatusChanged *link_status_changed; |
73 | QueryRxFilter *query_rx_filter; |
74 | NetPoll *poll; |
75 | HasUfo *has_ufo; |
76 | HasVnetHdr *has_vnet_hdr; |
77 | HasVnetHdrLen *has_vnet_hdr_len; |
78 | UsingVnetHdr *using_vnet_hdr; |
79 | SetOffload *set_offload; |
80 | SetVnetHdrLen *set_vnet_hdr_len; |
81 | SetVnetLE *set_vnet_le; |
82 | SetVnetBE *set_vnet_be; |
83 | NetAnnounce *announce; |
84 | } NetClientInfo; |
85 | |
86 | struct NetClientState { |
87 | NetClientInfo *info; |
88 | int link_down; |
89 | QTAILQ_ENTRY(NetClientState) next; |
90 | NetClientState *peer; |
91 | NetQueue *incoming_queue; |
92 | char *model; |
93 | char *name; |
94 | char info_str[256]; |
95 | unsigned receive_disabled : 1; |
96 | NetClientDestructor *destructor; |
97 | unsigned int queue_index; |
98 | unsigned rxfilter_notify_enabled:1; |
99 | int vring_enable; |
100 | int vnet_hdr_len; |
101 | QTAILQ_HEAD(, NetFilterState) filters; |
102 | }; |
103 | |
104 | typedef struct NICState { |
105 | NetClientState *ncs; |
106 | NICConf *conf; |
107 | void *opaque; |
108 | bool peer_deleted; |
109 | } NICState; |
110 | |
111 | struct SocketReadState { |
112 | /* 0 = getting length, 1 = getting vnet header length, 2 = getting data */ |
113 | int state; |
114 | /* This flag decide whether to read the vnet_hdr_len field */ |
115 | bool vnet_hdr; |
116 | uint32_t index; |
117 | uint32_t packet_len; |
118 | uint32_t vnet_hdr_len; |
119 | uint8_t buf[NET_BUFSIZE]; |
120 | SocketReadStateFinalize *finalize; |
121 | }; |
122 | |
123 | int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size); |
124 | char *qemu_mac_strdup_printf(const uint8_t *macaddr); |
125 | NetClientState *qemu_find_netdev(const char *id); |
126 | int qemu_find_net_clients_except(const char *id, NetClientState **ncs, |
127 | NetClientDriver type, int max); |
128 | NetClientState *qemu_new_net_client(NetClientInfo *info, |
129 | NetClientState *peer, |
130 | const char *model, |
131 | const char *name); |
132 | NICState *qemu_new_nic(NetClientInfo *info, |
133 | NICConf *conf, |
134 | const char *model, |
135 | const char *name, |
136 | void *opaque); |
137 | void qemu_del_nic(NICState *nic); |
138 | NetClientState *qemu_get_subqueue(NICState *nic, int queue_index); |
139 | NetClientState *qemu_get_queue(NICState *nic); |
140 | NICState *qemu_get_nic(NetClientState *nc); |
141 | void *qemu_get_nic_opaque(NetClientState *nc); |
142 | void qemu_del_net_client(NetClientState *nc); |
143 | typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque); |
144 | void qemu_foreach_nic(qemu_nic_foreach func, void *opaque); |
145 | int qemu_can_send_packet(NetClientState *nc); |
146 | ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov, |
147 | int iovcnt); |
148 | ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov, |
149 | int iovcnt, NetPacketSent *sent_cb); |
150 | ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size); |
151 | ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size); |
152 | ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf, |
153 | int size, NetPacketSent *sent_cb); |
154 | void qemu_purge_queued_packets(NetClientState *nc); |
155 | void qemu_flush_queued_packets(NetClientState *nc); |
156 | void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge); |
157 | void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]); |
158 | bool qemu_has_ufo(NetClientState *nc); |
159 | bool qemu_has_vnet_hdr(NetClientState *nc); |
160 | bool qemu_has_vnet_hdr_len(NetClientState *nc, int len); |
161 | void qemu_using_vnet_hdr(NetClientState *nc, bool enable); |
162 | void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6, |
163 | int ecn, int ufo); |
164 | void qemu_set_vnet_hdr_len(NetClientState *nc, int len); |
165 | int qemu_set_vnet_le(NetClientState *nc, bool is_le); |
166 | int qemu_set_vnet_be(NetClientState *nc, bool is_be); |
167 | void qemu_macaddr_default_if_unset(MACAddr *macaddr); |
168 | int qemu_show_nic_models(const char *arg, const char *const *models); |
169 | void qemu_check_nic_model(NICInfo *nd, const char *model); |
170 | int qemu_find_nic_model(NICInfo *nd, const char * const *models, |
171 | const char *default_model); |
172 | |
173 | void print_net_client(Monitor *mon, NetClientState *nc); |
174 | void hmp_info_network(Monitor *mon, const QDict *qdict); |
175 | void net_socket_rs_init(SocketReadState *rs, |
176 | SocketReadStateFinalize *finalize, |
177 | bool vnet_hdr); |
178 | |
179 | /* NIC info */ |
180 | |
181 | #define MAX_NICS 8 |
182 | |
183 | struct NICInfo { |
184 | MACAddr macaddr; |
185 | char *model; |
186 | char *name; |
187 | char *devaddr; |
188 | NetClientState *netdev; |
189 | int used; /* is this slot in nd_table[] being used? */ |
190 | int instantiated; /* does this NICInfo correspond to an instantiated NIC? */ |
191 | int nvectors; |
192 | }; |
193 | |
194 | extern int nb_nics; |
195 | extern NICInfo nd_table[MAX_NICS]; |
196 | extern const char *host_net_devices[]; |
197 | |
198 | /* from net.c */ |
199 | int net_client_parse(QemuOptsList *opts_list, const char *str); |
200 | int net_init_clients(Error **errp); |
201 | void net_check_clients(void); |
202 | void net_cleanup(void); |
203 | void hmp_host_net_add(Monitor *mon, const QDict *qdict); |
204 | void hmp_host_net_remove(Monitor *mon, const QDict *qdict); |
205 | void netdev_add(QemuOpts *opts, Error **errp); |
206 | void qmp_netdev_add(QDict *qdict, QObject **ret, Error **errp); |
207 | |
208 | int net_hub_id_for_client(NetClientState *nc, int *id); |
209 | NetClientState *net_hub_port_find(int hub_id); |
210 | |
211 | #define DEFAULT_NETWORK_SCRIPT "/etc/qemu-ifup" |
212 | #define DEFAULT_NETWORK_DOWN_SCRIPT "/etc/qemu-ifdown" |
213 | #define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper" |
214 | #define DEFAULT_BRIDGE_INTERFACE "br0" |
215 | |
216 | void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd); |
217 | |
218 | #define POLYNOMIAL_BE 0x04c11db6 |
219 | #define POLYNOMIAL_LE 0xedb88320 |
220 | uint32_t net_crc32(const uint8_t *p, int len); |
221 | uint32_t net_crc32_le(const uint8_t *p, int len); |
222 | |
223 | #define vmstate_offset_macaddr(_state, _field) \ |
224 | vmstate_offset_array(_state, _field.a, uint8_t, \ |
225 | sizeof(typeof_field(_state, _field))) |
226 | |
227 | #define VMSTATE_MACADDR(_field, _state) { \ |
228 | .name = (stringify(_field)), \ |
229 | .size = sizeof(MACAddr), \ |
230 | .info = &vmstate_info_buffer, \ |
231 | .flags = VMS_BUFFER, \ |
232 | .offset = vmstate_offset_macaddr(_state, _field), \ |
233 | } |
234 | |
235 | #endif |
236 | |