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#include "hw/qdev-properties-system.h"
8
9#define MAC_FMT "%02X:%02X:%02X:%02X:%02X:%02X"
10#define MAC_ARG(x) ((uint8_t *)(x))[0], ((uint8_t *)(x))[1], \
11 ((uint8_t *)(x))[2], ((uint8_t *)(x))[3], \
12 ((uint8_t *)(x))[4], ((uint8_t *)(x))[5]
13
14#define MAX_QUEUE_NUM 1024
15
16
17
18
19#define NET_BUFSIZE (4096 + 65536)
20
21struct MACAddr {
22 uint8_t a[6];
23};
24
25
26
27typedef struct NICPeers {
28 NetClientState *ncs[MAX_QUEUE_NUM];
29 int32_t queues;
30} NICPeers;
31
32typedef struct NICConf {
33 MACAddr macaddr;
34 NICPeers peers;
35 int32_t bootindex;
36} NICConf;
37
38#define DEFINE_NIC_PROPERTIES(_state, _conf) \
39 DEFINE_PROP_MACADDR("mac", _state, _conf.macaddr), \
40 DEFINE_PROP_NETDEV("netdev", _state, _conf.peers)
41
42
43
44
45typedef void (NetPoll)(NetClientState *, bool enable);
46typedef bool (NetCanReceive)(NetClientState *);
47typedef ssize_t (NetReceive)(NetClientState *, const uint8_t *, size_t);
48typedef ssize_t (NetReceiveIOV)(NetClientState *, const struct iovec *, int);
49typedef void (NetCleanup) (NetClientState *);
50typedef void (LinkStatusChanged)(NetClientState *);
51typedef void (NetClientDestructor)(NetClientState *);
52typedef RxFilterInfo *(QueryRxFilter)(NetClientState *);
53typedef bool (HasUfo)(NetClientState *);
54typedef bool (HasVnetHdr)(NetClientState *);
55typedef bool (HasVnetHdrLen)(NetClientState *, int);
56typedef void (UsingVnetHdr)(NetClientState *, bool);
57typedef void (SetOffload)(NetClientState *, int, int, int, int, int);
58typedef void (SetVnetHdrLen)(NetClientState *, int);
59typedef int (SetVnetLE)(NetClientState *, bool);
60typedef int (SetVnetBE)(NetClientState *, bool);
61typedef struct SocketReadState SocketReadState;
62typedef void (SocketReadStateFinalize)(SocketReadState *rs);
63typedef void (NetAnnounce)(NetClientState *);
64typedef bool (SetSteeringEBPF)(NetClientState *, int);
65
66typedef struct NetClientInfo {
67 NetClientDriver type;
68 size_t size;
69 NetReceive *receive;
70 NetReceive *receive_raw;
71 NetReceiveIOV *receive_iov;
72 NetCanReceive *can_receive;
73 NetCleanup *cleanup;
74 LinkStatusChanged *link_status_changed;
75 QueryRxFilter *query_rx_filter;
76 NetPoll *poll;
77 HasUfo *has_ufo;
78 HasVnetHdr *has_vnet_hdr;
79 HasVnetHdrLen *has_vnet_hdr_len;
80 UsingVnetHdr *using_vnet_hdr;
81 SetOffload *set_offload;
82 SetVnetHdrLen *set_vnet_hdr_len;
83 SetVnetLE *set_vnet_le;
84 SetVnetBE *set_vnet_be;
85 NetAnnounce *announce;
86 SetSteeringEBPF *set_steering_ebpf;
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 bool is_netdev;
105 bool do_not_pad;
106 QTAILQ_HEAD(, NetFilterState) filters;
107};
108
109typedef struct NICState {
110 NetClientState *ncs;
111 NICConf *conf;
112 void *opaque;
113 bool peer_deleted;
114} NICState;
115
116struct SocketReadState {
117
118 int state;
119
120 bool vnet_hdr;
121 uint32_t index;
122 uint32_t packet_len;
123 uint32_t vnet_hdr_len;
124 uint8_t buf[NET_BUFSIZE];
125 SocketReadStateFinalize *finalize;
126};
127
128int net_fill_rstate(SocketReadState *rs, const uint8_t *buf, int size);
129char *qemu_mac_strdup_printf(const uint8_t *macaddr);
130NetClientState *qemu_find_netdev(const char *id);
131int qemu_find_net_clients_except(const char *id, NetClientState **ncs,
132 NetClientDriver type, int max);
133NetClientState *qemu_new_net_client(NetClientInfo *info,
134 NetClientState *peer,
135 const char *model,
136 const char *name);
137NICState *qemu_new_nic(NetClientInfo *info,
138 NICConf *conf,
139 const char *model,
140 const char *name,
141 void *opaque);
142void qemu_del_nic(NICState *nic);
143NetClientState *qemu_get_subqueue(NICState *nic, int queue_index);
144NetClientState *qemu_get_queue(NICState *nic);
145NICState *qemu_get_nic(NetClientState *nc);
146void *qemu_get_nic_opaque(NetClientState *nc);
147void qemu_del_net_client(NetClientState *nc);
148typedef void (*qemu_nic_foreach)(NICState *nic, void *opaque);
149void qemu_foreach_nic(qemu_nic_foreach func, void *opaque);
150int qemu_can_receive_packet(NetClientState *nc);
151int qemu_can_send_packet(NetClientState *nc);
152ssize_t qemu_sendv_packet(NetClientState *nc, const struct iovec *iov,
153 int iovcnt);
154ssize_t qemu_sendv_packet_async(NetClientState *nc, const struct iovec *iov,
155 int iovcnt, NetPacketSent *sent_cb);
156ssize_t qemu_send_packet(NetClientState *nc, const uint8_t *buf, int size);
157ssize_t qemu_receive_packet(NetClientState *nc, const uint8_t *buf, int size);
158ssize_t qemu_receive_packet_iov(NetClientState *nc,
159 const struct iovec *iov,
160 int iovcnt);
161ssize_t qemu_send_packet_raw(NetClientState *nc, const uint8_t *buf, int size);
162ssize_t qemu_send_packet_async(NetClientState *nc, const uint8_t *buf,
163 int size, NetPacketSent *sent_cb);
164void qemu_purge_queued_packets(NetClientState *nc);
165void qemu_flush_queued_packets(NetClientState *nc);
166void qemu_flush_or_purge_queued_packets(NetClientState *nc, bool purge);
167void qemu_format_nic_info_str(NetClientState *nc, uint8_t macaddr[6]);
168bool qemu_has_ufo(NetClientState *nc);
169bool qemu_has_vnet_hdr(NetClientState *nc);
170bool qemu_has_vnet_hdr_len(NetClientState *nc, int len);
171void qemu_using_vnet_hdr(NetClientState *nc, bool enable);
172void qemu_set_offload(NetClientState *nc, int csum, int tso4, int tso6,
173 int ecn, int ufo);
174void qemu_set_vnet_hdr_len(NetClientState *nc, int len);
175int qemu_set_vnet_le(NetClientState *nc, bool is_le);
176int qemu_set_vnet_be(NetClientState *nc, bool is_be);
177void qemu_macaddr_default_if_unset(MACAddr *macaddr);
178int qemu_show_nic_models(const char *arg, const char *const *models);
179void qemu_check_nic_model(NICInfo *nd, const char *model);
180int qemu_find_nic_model(NICInfo *nd, const char * const *models,
181 const char *default_model);
182
183void print_net_client(Monitor *mon, NetClientState *nc);
184void hmp_info_network(Monitor *mon, const QDict *qdict);
185void net_socket_rs_init(SocketReadState *rs,
186 SocketReadStateFinalize *finalize,
187 bool vnet_hdr);
188NetClientState *qemu_get_peer(NetClientState *nc, int queue_index);
189
190
191
192#define MAX_NICS 8
193
194struct NICInfo {
195 MACAddr macaddr;
196 char *model;
197 char *name;
198 char *devaddr;
199 NetClientState *netdev;
200 int used;
201 int instantiated;
202 int nvectors;
203};
204
205extern int nb_nics;
206extern NICInfo nd_table[MAX_NICS];
207extern const char *host_net_devices[];
208
209
210int net_client_parse(QemuOptsList *opts_list, const char *str);
211void show_netdevs(void);
212int net_init_clients(Error **errp);
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);
218
219int net_hub_id_for_client(NetClientState *nc, int *id);
220NetClientState *net_hub_port_find(int hub_id);
221
222#define DEFAULT_NETWORK_SCRIPT CONFIG_SYSCONFDIR "/qemu-ifup"
223#define DEFAULT_NETWORK_DOWN_SCRIPT CONFIG_SYSCONFDIR "/qemu-ifdown"
224#define DEFAULT_BRIDGE_HELPER CONFIG_QEMU_HELPERDIR "/qemu-bridge-helper"
225#define DEFAULT_BRIDGE_INTERFACE "br0"
226
227void qdev_set_nic_properties(DeviceState *dev, NICInfo *nd);
228
229#define POLYNOMIAL_BE 0x04c11db6
230#define POLYNOMIAL_LE 0xedb88320
231uint32_t net_crc32(const uint8_t *p, int len);
232uint32_t net_crc32_le(const uint8_t *p, int len);
233
234#define vmstate_offset_macaddr(_state, _field) \
235 vmstate_offset_array(_state, _field.a, uint8_t, \
236 sizeof(typeof_field(_state, _field)))
237
238#define VMSTATE_MACADDR(_field, _state) { \
239 .name = (stringify(_field)), \
240 .size = sizeof(MACAddr), \
241 .info = &vmstate_info_buffer, \
242 .flags = VMS_BUFFER, \
243 .offset = vmstate_offset_macaddr(_state, _field), \
244}
245
246static inline bool net_peer_needs_padding(NetClientState *nc)
247{
248 return nc->peer && !nc->peer->do_not_pad;
249}
250
251#endif
252