slirp: correct size computation while concatenating mbuf
[qemu.git] / slirp / slirp.h
1 #ifndef SLIRP_H
2 #define SLIRP_H
3
4 #include "slirp_config.h"
5
6 #ifdef _WIN32
7
8 typedef char *caddr_t;
9
10 # include <windows.h>
11 # include <winsock2.h>
12 # include <ws2tcpip.h>
13 # include <sys/timeb.h>
14 # include <iphlpapi.h>
15
16 #else
17 # if !defined(__HAIKU__)
18 # define O_BINARY 0
19 # endif
20 #endif
21
22 #ifdef HAVE_SYS_BITYPES_H
23 # include <sys/bitypes.h>
24 #endif
25
26 #ifndef _WIN32
27 #include <sys/uio.h>
28 #endif
29
30 #ifndef _WIN32
31 #include <netinet/in.h>
32 #include <arpa/inet.h>
33 #endif
34
35 #ifndef NO_UNIX_SOCKETS
36 #include <sys/un.h>
37 #endif
38 #ifdef HAVE_SYS_SIGNAL_H
39 # include <sys/signal.h>
40 #endif
41 #ifndef _WIN32
42 #include <sys/socket.h>
43 #endif
44
45 #if defined(HAVE_SYS_IOCTL_H)
46 # include <sys/ioctl.h>
47 #endif
48
49 #ifdef HAVE_SYS_SELECT_H
50 # include <sys/select.h>
51 #endif
52
53 #ifdef HAVE_SYS_WAIT_H
54 # include <sys/wait.h>
55 #endif
56
57 #ifdef HAVE_SYS_FILIO_H
58 # include <sys/filio.h>
59 #endif
60
61 /* Avoid conflicting with the libc insque() and remque(), which
62 have different prototypes. */
63 #define insque slirp_insque
64 #define remque slirp_remque
65 #define quehead slirp_quehead
66
67 #ifdef HAVE_SYS_STROPTS_H
68 #include <sys/stropts.h>
69 #endif
70
71
72 #include "debug.h"
73
74 #include "qemu/queue.h"
75 #include "qemu/sockets.h"
76 #include "net/eth.h"
77
78 #include "libslirp.h"
79 #include "ip.h"
80 #include "ip6.h"
81 #include "tcp.h"
82 #include "tcp_timer.h"
83 #include "tcp_var.h"
84 #include "tcpip.h"
85 #include "udp.h"
86 #include "ip_icmp.h"
87 #include "ip6_icmp.h"
88 #include "mbuf.h"
89 #include "sbuf.h"
90 #include "socket.h"
91 #include "if.h"
92 #include "main.h"
93 #include "misc.h"
94
95 #include "bootp.h"
96 #include "tftp.h"
97
98 #define ARPOP_REQUEST 1 /* ARP request */
99 #define ARPOP_REPLY 2 /* ARP reply */
100
101 struct ethhdr {
102 unsigned char h_dest[ETH_ALEN]; /* destination eth addr */
103 unsigned char h_source[ETH_ALEN]; /* source ether addr */
104 unsigned short h_proto; /* packet type ID field */
105 };
106
107 struct slirp_arphdr {
108 unsigned short ar_hrd; /* format of hardware address */
109 unsigned short ar_pro; /* format of protocol address */
110 unsigned char ar_hln; /* length of hardware address */
111 unsigned char ar_pln; /* length of protocol address */
112 unsigned short ar_op; /* ARP opcode (command) */
113
114 /*
115 * Ethernet looks like this : This bit is variable sized however...
116 */
117 unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */
118 uint32_t ar_sip; /* sender IP address */
119 unsigned char ar_tha[ETH_ALEN]; /* target hardware address */
120 uint32_t ar_tip; /* target IP address */
121 } QEMU_PACKED;
122
123 #define ARP_TABLE_SIZE 16
124
125 typedef struct ArpTable {
126 struct slirp_arphdr table[ARP_TABLE_SIZE];
127 int next_victim;
128 } ArpTable;
129
130 void arp_table_add(Slirp *slirp, uint32_t ip_addr, uint8_t ethaddr[ETH_ALEN]);
131
132 bool arp_table_search(Slirp *slirp, uint32_t ip_addr,
133 uint8_t out_ethaddr[ETH_ALEN]);
134
135 struct ndpentry {
136 unsigned char eth_addr[ETH_ALEN]; /* sender hardware address */
137 struct in6_addr ip_addr; /* sender IP address */
138 } QEMU_PACKED;
139
140 #define NDP_TABLE_SIZE 16
141
142 typedef struct NdpTable {
143 struct ndpentry table[NDP_TABLE_SIZE];
144 int next_victim;
145 } NdpTable;
146
147 void ndp_table_add(Slirp *slirp, struct in6_addr ip_addr,
148 uint8_t ethaddr[ETH_ALEN]);
149 bool ndp_table_search(Slirp *slirp, struct in6_addr ip_addr,
150 uint8_t out_ethaddr[ETH_ALEN]);
151
152 struct Slirp {
153 QTAILQ_ENTRY(Slirp) entry;
154 u_int time_fasttimo;
155 u_int last_slowtimo;
156 bool do_slowtimo;
157
158 bool in_enabled, in6_enabled;
159
160 /* virtual network configuration */
161 struct in_addr vnetwork_addr;
162 struct in_addr vnetwork_mask;
163 struct in_addr vhost_addr;
164 struct in6_addr vprefix_addr6;
165 uint8_t vprefix_len;
166 struct in6_addr vhost_addr6;
167 struct in_addr vdhcp_startaddr;
168 struct in_addr vnameserver_addr;
169 struct in6_addr vnameserver_addr6;
170
171 struct in_addr client_ipaddr;
172 char client_hostname[33];
173
174 int restricted;
175 struct ex_list *exec_list;
176
177 /* mbuf states */
178 struct quehead m_freelist;
179 struct quehead m_usedlist;
180 int mbuf_alloced;
181
182 /* if states */
183 struct quehead if_fastq; /* fast queue (for interactive data) */
184 struct quehead if_batchq; /* queue for non-interactive data */
185 bool if_start_busy; /* avoid if_start recursion */
186
187 /* ip states */
188 struct ipq ipq; /* ip reass. queue */
189 uint16_t ip_id; /* ip packet ctr, for ids */
190
191 /* bootp/dhcp states */
192 BOOTPClient bootp_clients[NB_BOOTP_CLIENTS];
193 char *bootp_filename;
194 size_t vdnssearch_len;
195 uint8_t *vdnssearch;
196 char *vdomainname;
197
198 /* tcp states */
199 struct socket tcb;
200 struct socket *tcp_last_so;
201 tcp_seq tcp_iss; /* tcp initial send seq # */
202 uint32_t tcp_now; /* for RFC 1323 timestamps */
203
204 /* udp states */
205 struct socket udb;
206 struct socket *udp_last_so;
207
208 /* icmp states */
209 struct socket icmp;
210 struct socket *icmp_last_so;
211
212 /* tftp states */
213 char *tftp_prefix;
214 struct tftp_session tftp_sessions[TFTP_SESSIONS_MAX];
215
216 ArpTable arp_table;
217 NdpTable ndp_table;
218
219 GRand *grand;
220 QEMUTimer *ra_timer;
221
222 void *opaque;
223 };
224
225 extern Slirp *slirp_instance;
226
227 #ifndef NULL
228 #define NULL (void *)0
229 #endif
230
231 void if_start(Slirp *);
232
233 /* ncsi.c */
234 void ncsi_input(Slirp *slirp, const uint8_t *pkt, int pkt_len);
235
236 #ifndef _WIN32
237 #include <netdb.h>
238 #endif
239
240 #define SO_OPTIONS DO_KEEPALIVE
241 #define TCP_MAXIDLE (TCPTV_KEEPCNT * TCPTV_KEEPINTVL)
242
243 /* dnssearch.c */
244 int translate_dnssearch(Slirp *s, const char ** names);
245
246 /* cksum.c */
247 int cksum(struct mbuf *m, int len);
248 int ip6_cksum(struct mbuf *m);
249
250 /* if.c */
251 void if_init(Slirp *);
252 void if_output(struct socket *, struct mbuf *);
253
254 /* ip_input.c */
255 void ip_init(Slirp *);
256 void ip_cleanup(Slirp *);
257 void ip_input(struct mbuf *);
258 void ip_slowtimo(Slirp *);
259 void ip_stripoptions(register struct mbuf *, struct mbuf *);
260
261 /* ip_output.c */
262 int ip_output(struct socket *, struct mbuf *);
263
264 /* ip6_input.c */
265 void ip6_init(Slirp *);
266 void ip6_cleanup(Slirp *);
267 void ip6_input(struct mbuf *);
268
269 /* ip6_output */
270 int ip6_output(struct socket *, struct mbuf *, int fast);
271
272 /* tcp_input.c */
273 void tcp_input(register struct mbuf *, int, struct socket *, unsigned short af);
274 int tcp_mss(register struct tcpcb *, u_int);
275
276 /* tcp_output.c */
277 int tcp_output(register struct tcpcb *);
278 void tcp_setpersist(register struct tcpcb *);
279
280 /* tcp_subr.c */
281 void tcp_init(Slirp *);
282 void tcp_cleanup(Slirp *);
283 void tcp_template(struct tcpcb *);
284 void tcp_respond(struct tcpcb *, register struct tcpiphdr *,
285 register struct mbuf *, tcp_seq, tcp_seq, int, unsigned short);
286 struct tcpcb * tcp_newtcpcb(struct socket *);
287 struct tcpcb * tcp_close(register struct tcpcb *);
288 void tcp_sockclosed(struct tcpcb *);
289 int tcp_fconnect(struct socket *, unsigned short af);
290 void tcp_connect(struct socket *);
291 int tcp_attach(struct socket *);
292 uint8_t tcp_tos(struct socket *);
293 int tcp_emu(struct socket *, struct mbuf *);
294 int tcp_ctl(struct socket *);
295 struct tcpcb *tcp_drop(struct tcpcb *tp, int err);
296
297 #endif