root / slirp / slirp.c @ ac72472b
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1 | d75a0b97 | bellard | /*
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2 | d75a0b97 | bellard | * libslirp glue
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3 | d75a0b97 | bellard | *
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4 | d75a0b97 | bellard | * Copyright (c) 2004-2008 Fabrice Bellard
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5 | d75a0b97 | bellard | *
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6 | d75a0b97 | bellard | * Permission is hereby granted, free of charge, to any person obtaining a copy
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7 | d75a0b97 | bellard | * of this software and associated documentation files (the "Software"), to deal
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8 | d75a0b97 | bellard | * in the Software without restriction, including without limitation the rights
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9 | d75a0b97 | bellard | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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10 | d75a0b97 | bellard | * copies of the Software, and to permit persons to whom the Software is
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11 | d75a0b97 | bellard | * furnished to do so, subject to the following conditions:
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12 | d75a0b97 | bellard | *
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13 | d75a0b97 | bellard | * The above copyright notice and this permission notice shall be included in
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14 | d75a0b97 | bellard | * all copies or substantial portions of the Software.
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15 | d75a0b97 | bellard | *
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16 | d75a0b97 | bellard | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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17 | d75a0b97 | bellard | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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18 | d75a0b97 | bellard | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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19 | d75a0b97 | bellard | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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20 | d75a0b97 | bellard | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 | d75a0b97 | bellard | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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22 | d75a0b97 | bellard | * THE SOFTWARE.
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23 | d75a0b97 | bellard | */
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24 | e1c5a2b3 | aliguori | #include "qemu-common.h" |
25 | aaf10d9d | Ed Swierk | #include "qemu-timer.h" |
26 | 0580ac91 | blueswir1 | #include "qemu-char.h" |
27 | f0cbd3ec | bellard | #include "slirp.h" |
28 | 062e5527 | aliguori | #include "hw/hw.h" |
29 | f0cbd3ec | bellard | |
30 | f0cbd3ec | bellard | /* host address */
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31 | f0cbd3ec | bellard | struct in_addr our_addr;
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32 | f0cbd3ec | bellard | /* host dns address */
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33 | f0cbd3ec | bellard | struct in_addr dns_addr;
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34 | f0cbd3ec | bellard | /* host loopback address */
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35 | f0cbd3ec | bellard | struct in_addr loopback_addr;
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36 | f0cbd3ec | bellard | |
37 | a13a4126 | Jan Kiszka | /* emulated hosts use the MAC addr 52:55:IP:IP:IP:IP */
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38 | 9634d903 | blueswir1 | static const uint8_t special_ethaddr[6] = { |
39 | a13a4126 | Jan Kiszka | 0x52, 0x55, 0x00, 0x00, 0x00, 0x00 |
40 | f0cbd3ec | bellard | }; |
41 | f0cbd3ec | bellard | |
42 | de806f07 | bellard | static const uint8_t zero_ethaddr[6] = { 0, 0, 0, 0, 0, 0 }; |
43 | f0cbd3ec | bellard | |
44 | f0cbd3ec | bellard | /* XXX: suppress those select globals */
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45 | f0cbd3ec | bellard | fd_set *global_readfds, *global_writefds, *global_xfds; |
46 | f0cbd3ec | bellard | |
47 | f1d99bbd | Jan Kiszka | u_int curtime; |
48 | f1d99bbd | Jan Kiszka | static u_int time_fasttimo, last_slowtimo;
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49 | f1d99bbd | Jan Kiszka | static int do_slowtimo; |
50 | f1d99bbd | Jan Kiszka | |
51 | 23534222 | Blue Swirl | static TAILQ_HEAD(slirp_instances, Slirp) slirp_instances =
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52 | b1c99fcd | Jan Kiszka | TAILQ_HEAD_INITIALIZER(slirp_instances); |
53 | 115defd1 | pbrook | |
54 | f0cbd3ec | bellard | #ifdef _WIN32
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55 | f0cbd3ec | bellard | |
56 | f0cbd3ec | bellard | static int get_dns_addr(struct in_addr *pdns_addr) |
57 | f0cbd3ec | bellard | { |
58 | 379ff53d | bellard | FIXED_INFO *FixedInfo=NULL;
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59 | 379ff53d | bellard | ULONG BufLen; |
60 | 379ff53d | bellard | DWORD ret; |
61 | 379ff53d | bellard | IP_ADDR_STRING *pIPAddr; |
62 | 379ff53d | bellard | struct in_addr tmp_addr;
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63 | 3b46e624 | ths | |
64 | 379ff53d | bellard | FixedInfo = (FIXED_INFO *)GlobalAlloc(GPTR, sizeof(FIXED_INFO));
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65 | 379ff53d | bellard | BufLen = sizeof(FIXED_INFO);
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66 | 3b46e624 | ths | |
67 | 379ff53d | bellard | if (ERROR_BUFFER_OVERFLOW == GetNetworkParams(FixedInfo, &BufLen)) {
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68 | 379ff53d | bellard | if (FixedInfo) {
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69 | 379ff53d | bellard | GlobalFree(FixedInfo); |
70 | 379ff53d | bellard | FixedInfo = NULL;
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71 | 379ff53d | bellard | } |
72 | 379ff53d | bellard | FixedInfo = GlobalAlloc(GPTR, BufLen); |
73 | 379ff53d | bellard | } |
74 | 5fafdf24 | ths | |
75 | 379ff53d | bellard | if ((ret = GetNetworkParams(FixedInfo, &BufLen)) != ERROR_SUCCESS) {
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76 | 379ff53d | bellard | printf("GetNetworkParams failed. ret = %08x\n", (u_int)ret );
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77 | 379ff53d | bellard | if (FixedInfo) {
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78 | 379ff53d | bellard | GlobalFree(FixedInfo); |
79 | 379ff53d | bellard | FixedInfo = NULL;
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80 | 379ff53d | bellard | } |
81 | 379ff53d | bellard | return -1; |
82 | 379ff53d | bellard | } |
83 | 3b46e624 | ths | |
84 | 379ff53d | bellard | pIPAddr = &(FixedInfo->DnsServerList); |
85 | 379ff53d | bellard | inet_aton(pIPAddr->IpAddress.String, &tmp_addr); |
86 | 379ff53d | bellard | *pdns_addr = tmp_addr; |
87 | 379ff53d | bellard | if (FixedInfo) {
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88 | 379ff53d | bellard | GlobalFree(FixedInfo); |
89 | 379ff53d | bellard | FixedInfo = NULL;
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90 | 379ff53d | bellard | } |
91 | 379ff53d | bellard | return 0; |
92 | f0cbd3ec | bellard | } |
93 | f0cbd3ec | bellard | |
94 | df461894 | Jan Kiszka | static void winsock_cleanup(void) |
95 | df461894 | Jan Kiszka | { |
96 | df461894 | Jan Kiszka | WSACleanup(); |
97 | df461894 | Jan Kiszka | } |
98 | df461894 | Jan Kiszka | |
99 | f0cbd3ec | bellard | #else
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100 | f0cbd3ec | bellard | |
101 | f0cbd3ec | bellard | static int get_dns_addr(struct in_addr *pdns_addr) |
102 | f0cbd3ec | bellard | { |
103 | f0cbd3ec | bellard | char buff[512]; |
104 | 363a37d5 | blueswir1 | char buff2[257]; |
105 | f0cbd3ec | bellard | FILE *f; |
106 | f0cbd3ec | bellard | int found = 0; |
107 | f0cbd3ec | bellard | struct in_addr tmp_addr;
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108 | 3b46e624 | ths | |
109 | f0cbd3ec | bellard | f = fopen("/etc/resolv.conf", "r"); |
110 | f0cbd3ec | bellard | if (!f)
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111 | f0cbd3ec | bellard | return -1; |
112 | f0cbd3ec | bellard | |
113 | 31a60e22 | blueswir1 | #ifdef DEBUG
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114 | f0cbd3ec | bellard | lprint("IP address of your DNS(s): ");
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115 | 31a60e22 | blueswir1 | #endif
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116 | f0cbd3ec | bellard | while (fgets(buff, 512, f) != NULL) { |
117 | f0cbd3ec | bellard | if (sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1) { |
118 | f0cbd3ec | bellard | if (!inet_aton(buff2, &tmp_addr))
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119 | f0cbd3ec | bellard | continue;
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120 | f0cbd3ec | bellard | if (tmp_addr.s_addr == loopback_addr.s_addr)
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121 | f0cbd3ec | bellard | tmp_addr = our_addr; |
122 | f0cbd3ec | bellard | /* If it's the first one, set it to dns_addr */
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123 | f0cbd3ec | bellard | if (!found)
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124 | f0cbd3ec | bellard | *pdns_addr = tmp_addr; |
125 | 31a60e22 | blueswir1 | #ifdef DEBUG
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126 | f0cbd3ec | bellard | else
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127 | f0cbd3ec | bellard | lprint(", ");
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128 | 31a60e22 | blueswir1 | #endif
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129 | f0cbd3ec | bellard | if (++found > 3) { |
130 | 31a60e22 | blueswir1 | #ifdef DEBUG
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131 | f0cbd3ec | bellard | lprint("(more)");
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132 | 31a60e22 | blueswir1 | #endif
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133 | f0cbd3ec | bellard | break;
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134 | 31a60e22 | blueswir1 | } |
135 | 31a60e22 | blueswir1 | #ifdef DEBUG
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136 | 31a60e22 | blueswir1 | else
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137 | f0cbd3ec | bellard | lprint("%s", inet_ntoa(tmp_addr));
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138 | 31a60e22 | blueswir1 | #endif
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139 | f0cbd3ec | bellard | } |
140 | f0cbd3ec | bellard | } |
141 | 1d43a717 | bellard | fclose(f); |
142 | f0cbd3ec | bellard | if (!found)
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143 | f0cbd3ec | bellard | return -1; |
144 | f0cbd3ec | bellard | return 0; |
145 | f0cbd3ec | bellard | } |
146 | f0cbd3ec | bellard | |
147 | f0cbd3ec | bellard | #endif
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148 | f0cbd3ec | bellard | |
149 | df461894 | Jan Kiszka | static void slirp_init_once(void) |
150 | 379ff53d | bellard | { |
151 | df461894 | Jan Kiszka | static int initialized; |
152 | df461894 | Jan Kiszka | struct hostent *he;
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153 | df461894 | Jan Kiszka | char our_name[256]; |
154 | df461894 | Jan Kiszka | #ifdef _WIN32
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155 | df461894 | Jan Kiszka | WSADATA Data; |
156 | 379ff53d | bellard | #endif
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157 | 379ff53d | bellard | |
158 | df461894 | Jan Kiszka | if (initialized) {
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159 | df461894 | Jan Kiszka | return;
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160 | df461894 | Jan Kiszka | } |
161 | df461894 | Jan Kiszka | initialized = 1;
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162 | df461894 | Jan Kiszka | |
163 | df461894 | Jan Kiszka | #ifdef _WIN32
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164 | df461894 | Jan Kiszka | WSAStartup(MAKEWORD(2,0), &Data); |
165 | df461894 | Jan Kiszka | atexit(winsock_cleanup); |
166 | df461894 | Jan Kiszka | #endif
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167 | df461894 | Jan Kiszka | |
168 | df461894 | Jan Kiszka | loopback_addr.s_addr = htonl(INADDR_LOOPBACK); |
169 | df461894 | Jan Kiszka | |
170 | df461894 | Jan Kiszka | /* FIXME: This address may change during runtime */
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171 | df461894 | Jan Kiszka | if (gethostname(our_name, sizeof(our_name)) == 0) { |
172 | df461894 | Jan Kiszka | he = gethostbyname(our_name); |
173 | df461894 | Jan Kiszka | if (he) {
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174 | df461894 | Jan Kiszka | our_addr = *(struct in_addr *)he->h_addr;
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175 | df461894 | Jan Kiszka | } |
176 | df461894 | Jan Kiszka | } |
177 | df461894 | Jan Kiszka | if (our_addr.s_addr == 0) { |
178 | df461894 | Jan Kiszka | our_addr = loopback_addr; |
179 | df461894 | Jan Kiszka | } |
180 | df461894 | Jan Kiszka | |
181 | df461894 | Jan Kiszka | /* FIXME: This address may change during runtime */
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182 | df461894 | Jan Kiszka | if (get_dns_addr(&dns_addr) < 0) { |
183 | df461894 | Jan Kiszka | dns_addr = loopback_addr; |
184 | df461894 | Jan Kiszka | } |
185 | df461894 | Jan Kiszka | } |
186 | df461894 | Jan Kiszka | |
187 | 062e5527 | aliguori | static void slirp_state_save(QEMUFile *f, void *opaque); |
188 | 062e5527 | aliguori | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id); |
189 | 062e5527 | aliguori | |
190 | 9f8bd042 | Jan Kiszka | Slirp *slirp_init(int restricted, struct in_addr vnetwork, |
191 | 9f8bd042 | Jan Kiszka | struct in_addr vnetmask, struct in_addr vhost, |
192 | 9f8bd042 | Jan Kiszka | const char *vhostname, const char *tftp_path, |
193 | 9f8bd042 | Jan Kiszka | const char *bootfile, struct in_addr vdhcp_start, |
194 | 9f8bd042 | Jan Kiszka | struct in_addr vnameserver, void *opaque) |
195 | f0cbd3ec | bellard | { |
196 | ad0d8c4c | Jan Kiszka | Slirp *slirp = qemu_mallocz(sizeof(Slirp));
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197 | 460fec67 | Jan Kiszka | |
198 | df461894 | Jan Kiszka | slirp_init_once(); |
199 | 379ff53d | bellard | |
200 | 460fec67 | Jan Kiszka | slirp->restricted = restricted; |
201 | f0cbd3ec | bellard | |
202 | 460fec67 | Jan Kiszka | if_init(slirp); |
203 | 460fec67 | Jan Kiszka | ip_init(slirp); |
204 | f0cbd3ec | bellard | |
205 | f0cbd3ec | bellard | /* Initialise mbufs *after* setting the MTU */
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206 | 460fec67 | Jan Kiszka | m_init(slirp); |
207 | f0cbd3ec | bellard | |
208 | 460fec67 | Jan Kiszka | slirp->vnetwork_addr = vnetwork; |
209 | 460fec67 | Jan Kiszka | slirp->vnetwork_mask = vnetmask; |
210 | 460fec67 | Jan Kiszka | slirp->vhost_addr = vhost; |
211 | c92ef6a2 | Jan Kiszka | if (vhostname) {
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212 | 460fec67 | Jan Kiszka | pstrcpy(slirp->client_hostname, sizeof(slirp->client_hostname),
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213 | 460fec67 | Jan Kiszka | vhostname); |
214 | a13a4126 | Jan Kiszka | } |
215 | ad196a9d | Jan Kiszka | if (tftp_path) {
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216 | 460fec67 | Jan Kiszka | slirp->tftp_prefix = qemu_strdup(tftp_path); |
217 | ad196a9d | Jan Kiszka | } |
218 | ad196a9d | Jan Kiszka | if (bootfile) {
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219 | 460fec67 | Jan Kiszka | slirp->bootp_filename = qemu_strdup(bootfile); |
220 | ad196a9d | Jan Kiszka | } |
221 | 460fec67 | Jan Kiszka | slirp->vdhcp_startaddr = vdhcp_start; |
222 | 460fec67 | Jan Kiszka | slirp->vnameserver_addr = vnameserver; |
223 | ad196a9d | Jan Kiszka | |
224 | 9f8bd042 | Jan Kiszka | slirp->opaque = opaque; |
225 | 9f8bd042 | Jan Kiszka | |
226 | 0a1f851e | Jan Kiszka | register_savevm("slirp", 0, 3, slirp_state_save, slirp_state_load, slirp); |
227 | 9f8bd042 | Jan Kiszka | |
228 | b1c99fcd | Jan Kiszka | TAILQ_INSERT_TAIL(&slirp_instances, slirp, entry); |
229 | ad0d8c4c | Jan Kiszka | |
230 | 9f8bd042 | Jan Kiszka | return slirp;
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231 | f0cbd3ec | bellard | } |
232 | f0cbd3ec | bellard | |
233 | ad0d8c4c | Jan Kiszka | void slirp_cleanup(Slirp *slirp)
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234 | ad0d8c4c | Jan Kiszka | { |
235 | b1c99fcd | Jan Kiszka | TAILQ_REMOVE(&slirp_instances, slirp, entry); |
236 | b1c99fcd | Jan Kiszka | |
237 | ad0d8c4c | Jan Kiszka | unregister_savevm("slirp", slirp);
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238 | ad0d8c4c | Jan Kiszka | |
239 | ad0d8c4c | Jan Kiszka | qemu_free(slirp->tftp_prefix); |
240 | ad0d8c4c | Jan Kiszka | qemu_free(slirp->bootp_filename); |
241 | ad0d8c4c | Jan Kiszka | qemu_free(slirp); |
242 | ad0d8c4c | Jan Kiszka | } |
243 | ad0d8c4c | Jan Kiszka | |
244 | f0cbd3ec | bellard | #define CONN_CANFSEND(so) (((so)->so_state & (SS_FCANTSENDMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED)
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245 | f0cbd3ec | bellard | #define CONN_CANFRCV(so) (((so)->so_state & (SS_FCANTRCVMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED)
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246 | f0cbd3ec | bellard | #define UPD_NFDS(x) if (nfds < (x)) nfds = (x) |
247 | f0cbd3ec | bellard | |
248 | 5fafdf24 | ths | void slirp_select_fill(int *pnfds, |
249 | f0cbd3ec | bellard | fd_set *readfds, fd_set *writefds, fd_set *xfds) |
250 | f0cbd3ec | bellard | { |
251 | b1c99fcd | Jan Kiszka | Slirp *slirp; |
252 | f0cbd3ec | bellard | struct socket *so, *so_next;
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253 | f0cbd3ec | bellard | int nfds;
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254 | f0cbd3ec | bellard | |
255 | b1c99fcd | Jan Kiszka | if (TAILQ_EMPTY(&slirp_instances)) {
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256 | d918f23e | Jan Kiszka | return;
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257 | d918f23e | Jan Kiszka | } |
258 | d918f23e | Jan Kiszka | |
259 | f0cbd3ec | bellard | /* fail safe */
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260 | f0cbd3ec | bellard | global_readfds = NULL;
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261 | f0cbd3ec | bellard | global_writefds = NULL;
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262 | f0cbd3ec | bellard | global_xfds = NULL;
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263 | 3b46e624 | ths | |
264 | f0cbd3ec | bellard | nfds = *pnfds; |
265 | f0cbd3ec | bellard | /*
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266 | f0cbd3ec | bellard | * First, TCP sockets
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267 | f0cbd3ec | bellard | */
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268 | f0cbd3ec | bellard | do_slowtimo = 0;
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269 | d918f23e | Jan Kiszka | |
270 | b1c99fcd | Jan Kiszka | TAILQ_FOREACH(slirp, &slirp_instances, entry) { |
271 | 5fafdf24 | ths | /*
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272 | f0cbd3ec | bellard | * *_slowtimo needs calling if there are IP fragments
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273 | f0cbd3ec | bellard | * in the fragment queue, or there are TCP connections active
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274 | f0cbd3ec | bellard | */
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275 | b1c99fcd | Jan Kiszka | do_slowtimo |= ((slirp->tcb.so_next != &slirp->tcb) || |
276 | 460fec67 | Jan Kiszka | (&slirp->ipq.ip_link != slirp->ipq.ip_link.next)); |
277 | 3b46e624 | ths | |
278 | 460fec67 | Jan Kiszka | for (so = slirp->tcb.so_next; so != &slirp->tcb;
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279 | 460fec67 | Jan Kiszka | so = so_next) { |
280 | f0cbd3ec | bellard | so_next = so->so_next; |
281 | 3b46e624 | ths | |
282 | f0cbd3ec | bellard | /*
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283 | f0cbd3ec | bellard | * See if we need a tcp_fasttimo
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284 | f0cbd3ec | bellard | */
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285 | f0cbd3ec | bellard | if (time_fasttimo == 0 && so->so_tcpcb->t_flags & TF_DELACK) |
286 | f0cbd3ec | bellard | time_fasttimo = curtime; /* Flag when we want a fasttimo */
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287 | 3b46e624 | ths | |
288 | f0cbd3ec | bellard | /*
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289 | f0cbd3ec | bellard | * NOFDREF can include still connecting to local-host,
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290 | f0cbd3ec | bellard | * newly socreated() sockets etc. Don't want to select these.
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291 | f0cbd3ec | bellard | */
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292 | f0cbd3ec | bellard | if (so->so_state & SS_NOFDREF || so->s == -1) |
293 | f0cbd3ec | bellard | continue;
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294 | 3b46e624 | ths | |
295 | f0cbd3ec | bellard | /*
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296 | f0cbd3ec | bellard | * Set for reading sockets which are accepting
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297 | f0cbd3ec | bellard | */
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298 | f0cbd3ec | bellard | if (so->so_state & SS_FACCEPTCONN) {
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299 | f0cbd3ec | bellard | FD_SET(so->s, readfds); |
300 | f0cbd3ec | bellard | UPD_NFDS(so->s); |
301 | f0cbd3ec | bellard | continue;
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302 | f0cbd3ec | bellard | } |
303 | 3b46e624 | ths | |
304 | f0cbd3ec | bellard | /*
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305 | f0cbd3ec | bellard | * Set for writing sockets which are connecting
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306 | f0cbd3ec | bellard | */
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307 | f0cbd3ec | bellard | if (so->so_state & SS_ISFCONNECTING) {
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308 | f0cbd3ec | bellard | FD_SET(so->s, writefds); |
309 | f0cbd3ec | bellard | UPD_NFDS(so->s); |
310 | f0cbd3ec | bellard | continue;
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311 | f0cbd3ec | bellard | } |
312 | 3b46e624 | ths | |
313 | f0cbd3ec | bellard | /*
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314 | f0cbd3ec | bellard | * Set for writing if we are connected, can send more, and
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315 | f0cbd3ec | bellard | * we have something to send
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316 | f0cbd3ec | bellard | */
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317 | f0cbd3ec | bellard | if (CONN_CANFSEND(so) && so->so_rcv.sb_cc) {
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318 | f0cbd3ec | bellard | FD_SET(so->s, writefds); |
319 | f0cbd3ec | bellard | UPD_NFDS(so->s); |
320 | f0cbd3ec | bellard | } |
321 | 3b46e624 | ths | |
322 | f0cbd3ec | bellard | /*
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323 | f0cbd3ec | bellard | * Set for reading (and urgent data) if we are connected, can
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324 | f0cbd3ec | bellard | * receive more, and we have room for it XXX /2 ?
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325 | f0cbd3ec | bellard | */
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326 | f0cbd3ec | bellard | if (CONN_CANFRCV(so) && (so->so_snd.sb_cc < (so->so_snd.sb_datalen/2))) { |
327 | f0cbd3ec | bellard | FD_SET(so->s, readfds); |
328 | f0cbd3ec | bellard | FD_SET(so->s, xfds); |
329 | f0cbd3ec | bellard | UPD_NFDS(so->s); |
330 | f0cbd3ec | bellard | } |
331 | f0cbd3ec | bellard | } |
332 | 3b46e624 | ths | |
333 | f0cbd3ec | bellard | /*
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334 | f0cbd3ec | bellard | * UDP sockets
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335 | f0cbd3ec | bellard | */
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336 | 460fec67 | Jan Kiszka | for (so = slirp->udb.so_next; so != &slirp->udb;
|
337 | 460fec67 | Jan Kiszka | so = so_next) { |
338 | f0cbd3ec | bellard | so_next = so->so_next; |
339 | 3b46e624 | ths | |
340 | f0cbd3ec | bellard | /*
|
341 | f0cbd3ec | bellard | * See if it's timed out
|
342 | f0cbd3ec | bellard | */
|
343 | f0cbd3ec | bellard | if (so->so_expire) {
|
344 | f0cbd3ec | bellard | if (so->so_expire <= curtime) {
|
345 | f0cbd3ec | bellard | udp_detach(so); |
346 | f0cbd3ec | bellard | continue;
|
347 | f0cbd3ec | bellard | } else
|
348 | f0cbd3ec | bellard | do_slowtimo = 1; /* Let socket expire */ |
349 | f0cbd3ec | bellard | } |
350 | 3b46e624 | ths | |
351 | f0cbd3ec | bellard | /*
|
352 | f0cbd3ec | bellard | * When UDP packets are received from over the
|
353 | f0cbd3ec | bellard | * link, they're sendto()'d straight away, so
|
354 | f0cbd3ec | bellard | * no need for setting for writing
|
355 | f0cbd3ec | bellard | * Limit the number of packets queued by this session
|
356 | f0cbd3ec | bellard | * to 4. Note that even though we try and limit this
|
357 | f0cbd3ec | bellard | * to 4 packets, the session could have more queued
|
358 | f0cbd3ec | bellard | * if the packets needed to be fragmented
|
359 | f0cbd3ec | bellard | * (XXX <= 4 ?)
|
360 | f0cbd3ec | bellard | */
|
361 | f0cbd3ec | bellard | if ((so->so_state & SS_ISFCONNECTED) && so->so_queued <= 4) { |
362 | f0cbd3ec | bellard | FD_SET(so->s, readfds); |
363 | f0cbd3ec | bellard | UPD_NFDS(so->s); |
364 | f0cbd3ec | bellard | } |
365 | f0cbd3ec | bellard | } |
366 | b1c99fcd | Jan Kiszka | } |
367 | 5fafdf24 | ths | |
368 | f0cbd3ec | bellard | *pnfds = nfds; |
369 | 5fafdf24 | ths | } |
370 | f0cbd3ec | bellard | |
371 | d918f23e | Jan Kiszka | void slirp_select_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds,
|
372 | d918f23e | Jan Kiszka | int select_error)
|
373 | f0cbd3ec | bellard | { |
374 | b1c99fcd | Jan Kiszka | Slirp *slirp; |
375 | f0cbd3ec | bellard | struct socket *so, *so_next;
|
376 | f0cbd3ec | bellard | int ret;
|
377 | f0cbd3ec | bellard | |
378 | b1c99fcd | Jan Kiszka | if (TAILQ_EMPTY(&slirp_instances)) {
|
379 | d918f23e | Jan Kiszka | return;
|
380 | d918f23e | Jan Kiszka | } |
381 | d918f23e | Jan Kiszka | |
382 | f0cbd3ec | bellard | global_readfds = readfds; |
383 | f0cbd3ec | bellard | global_writefds = writefds; |
384 | f0cbd3ec | bellard | global_xfds = xfds; |
385 | f0cbd3ec | bellard | |
386 | aaf10d9d | Ed Swierk | curtime = qemu_get_clock(rt_clock); |
387 | 5fafdf24 | ths | |
388 | b1c99fcd | Jan Kiszka | TAILQ_FOREACH(slirp, &slirp_instances, entry) { |
389 | f0cbd3ec | bellard | /*
|
390 | 5fafdf24 | ths | * See if anything has timed out
|
391 | f0cbd3ec | bellard | */
|
392 | df5f8956 | bellard | if (time_fasttimo && ((curtime - time_fasttimo) >= 2)) { |
393 | 460fec67 | Jan Kiszka | tcp_fasttimo(slirp); |
394 | f0cbd3ec | bellard | time_fasttimo = 0;
|
395 | f0cbd3ec | bellard | } |
396 | f0cbd3ec | bellard | if (do_slowtimo && ((curtime - last_slowtimo) >= 499)) { |
397 | 460fec67 | Jan Kiszka | ip_slowtimo(slirp); |
398 | 460fec67 | Jan Kiszka | tcp_slowtimo(slirp); |
399 | f0cbd3ec | bellard | last_slowtimo = curtime; |
400 | f0cbd3ec | bellard | } |
401 | 5fafdf24 | ths | |
402 | f0cbd3ec | bellard | /*
|
403 | f0cbd3ec | bellard | * Check sockets
|
404 | f0cbd3ec | bellard | */
|
405 | d918f23e | Jan Kiszka | if (!select_error) {
|
406 | f0cbd3ec | bellard | /*
|
407 | f0cbd3ec | bellard | * Check TCP sockets
|
408 | f0cbd3ec | bellard | */
|
409 | 460fec67 | Jan Kiszka | for (so = slirp->tcb.so_next; so != &slirp->tcb;
|
410 | 460fec67 | Jan Kiszka | so = so_next) { |
411 | f0cbd3ec | bellard | so_next = so->so_next; |
412 | 3b46e624 | ths | |
413 | f0cbd3ec | bellard | /*
|
414 | f0cbd3ec | bellard | * FD_ISSET is meaningless on these sockets
|
415 | f0cbd3ec | bellard | * (and they can crash the program)
|
416 | f0cbd3ec | bellard | */
|
417 | f0cbd3ec | bellard | if (so->so_state & SS_NOFDREF || so->s == -1) |
418 | f0cbd3ec | bellard | continue;
|
419 | 3b46e624 | ths | |
420 | f0cbd3ec | bellard | /*
|
421 | f0cbd3ec | bellard | * Check for URG data
|
422 | f0cbd3ec | bellard | * This will soread as well, so no need to
|
423 | f0cbd3ec | bellard | * test for readfds below if this succeeds
|
424 | f0cbd3ec | bellard | */
|
425 | f0cbd3ec | bellard | if (FD_ISSET(so->s, xfds))
|
426 | f0cbd3ec | bellard | sorecvoob(so); |
427 | f0cbd3ec | bellard | /*
|
428 | f0cbd3ec | bellard | * Check sockets for reading
|
429 | f0cbd3ec | bellard | */
|
430 | f0cbd3ec | bellard | else if (FD_ISSET(so->s, readfds)) { |
431 | f0cbd3ec | bellard | /*
|
432 | f0cbd3ec | bellard | * Check for incoming connections
|
433 | f0cbd3ec | bellard | */
|
434 | f0cbd3ec | bellard | if (so->so_state & SS_FACCEPTCONN) {
|
435 | f0cbd3ec | bellard | tcp_connect(so); |
436 | f0cbd3ec | bellard | continue;
|
437 | f0cbd3ec | bellard | } /* else */
|
438 | f0cbd3ec | bellard | ret = soread(so); |
439 | 3b46e624 | ths | |
440 | f0cbd3ec | bellard | /* Output it if we read something */
|
441 | f0cbd3ec | bellard | if (ret > 0) |
442 | f0cbd3ec | bellard | tcp_output(sototcpcb(so)); |
443 | f0cbd3ec | bellard | } |
444 | 3b46e624 | ths | |
445 | f0cbd3ec | bellard | /*
|
446 | f0cbd3ec | bellard | * Check sockets for writing
|
447 | f0cbd3ec | bellard | */
|
448 | f0cbd3ec | bellard | if (FD_ISSET(so->s, writefds)) {
|
449 | f0cbd3ec | bellard | /*
|
450 | f0cbd3ec | bellard | * Check for non-blocking, still-connecting sockets
|
451 | f0cbd3ec | bellard | */
|
452 | f0cbd3ec | bellard | if (so->so_state & SS_ISFCONNECTING) {
|
453 | f0cbd3ec | bellard | /* Connected */
|
454 | f0cbd3ec | bellard | so->so_state &= ~SS_ISFCONNECTING; |
455 | 3b46e624 | ths | |
456 | 0a656f5f | malc | ret = send(so->s, (const void *) &ret, 0, 0); |
457 | f0cbd3ec | bellard | if (ret < 0) { |
458 | f0cbd3ec | bellard | /* XXXXX Must fix, zero bytes is a NOP */
|
459 | f0cbd3ec | bellard | if (errno == EAGAIN || errno == EWOULDBLOCK ||
|
460 | f0cbd3ec | bellard | errno == EINPROGRESS || errno == ENOTCONN) |
461 | f0cbd3ec | bellard | continue;
|
462 | 3b46e624 | ths | |
463 | f0cbd3ec | bellard | /* else failed */
|
464 | f932b6ce | Jan Kiszka | so->so_state &= SS_PERSISTENT_MASK; |
465 | f932b6ce | Jan Kiszka | so->so_state |= SS_NOFDREF; |
466 | f0cbd3ec | bellard | } |
467 | f0cbd3ec | bellard | /* else so->so_state &= ~SS_ISFCONNECTING; */
|
468 | 3b46e624 | ths | |
469 | f0cbd3ec | bellard | /*
|
470 | f0cbd3ec | bellard | * Continue tcp_input
|
471 | f0cbd3ec | bellard | */
|
472 | f0cbd3ec | bellard | tcp_input((struct mbuf *)NULL, sizeof(struct ip), so); |
473 | f0cbd3ec | bellard | /* continue; */
|
474 | f0cbd3ec | bellard | } else
|
475 | f0cbd3ec | bellard | ret = sowrite(so); |
476 | f0cbd3ec | bellard | /*
|
477 | 5fafdf24 | ths | * XXXXX If we wrote something (a lot), there
|
478 | f0cbd3ec | bellard | * could be a need for a window update.
|
479 | f0cbd3ec | bellard | * In the worst case, the remote will send
|
480 | f0cbd3ec | bellard | * a window probe to get things going again
|
481 | f0cbd3ec | bellard | */
|
482 | f0cbd3ec | bellard | } |
483 | 3b46e624 | ths | |
484 | f0cbd3ec | bellard | /*
|
485 | f0cbd3ec | bellard | * Probe a still-connecting, non-blocking socket
|
486 | f0cbd3ec | bellard | * to check if it's still alive
|
487 | f0cbd3ec | bellard | */
|
488 | f0cbd3ec | bellard | #ifdef PROBE_CONN
|
489 | f0cbd3ec | bellard | if (so->so_state & SS_ISFCONNECTING) {
|
490 | 02d2c54c | bellard | ret = recv(so->s, (char *)&ret, 0,0); |
491 | 3b46e624 | ths | |
492 | f0cbd3ec | bellard | if (ret < 0) { |
493 | f0cbd3ec | bellard | /* XXX */
|
494 | f0cbd3ec | bellard | if (errno == EAGAIN || errno == EWOULDBLOCK ||
|
495 | f0cbd3ec | bellard | errno == EINPROGRESS || errno == ENOTCONN) |
496 | f0cbd3ec | bellard | continue; /* Still connecting, continue */ |
497 | 3b46e624 | ths | |
498 | f0cbd3ec | bellard | /* else failed */
|
499 | f932b6ce | Jan Kiszka | so->so_state &= SS_PERSISTENT_MASK; |
500 | f932b6ce | Jan Kiszka | so->so_state |= SS_NOFDREF; |
501 | 3b46e624 | ths | |
502 | f0cbd3ec | bellard | /* tcp_input will take care of it */
|
503 | f0cbd3ec | bellard | } else {
|
504 | 02d2c54c | bellard | ret = send(so->s, &ret, 0,0); |
505 | f0cbd3ec | bellard | if (ret < 0) { |
506 | f0cbd3ec | bellard | /* XXX */
|
507 | f0cbd3ec | bellard | if (errno == EAGAIN || errno == EWOULDBLOCK ||
|
508 | f0cbd3ec | bellard | errno == EINPROGRESS || errno == ENOTCONN) |
509 | f0cbd3ec | bellard | continue;
|
510 | f0cbd3ec | bellard | /* else failed */
|
511 | f932b6ce | Jan Kiszka | so->so_state &= SS_PERSISTENT_MASK; |
512 | f932b6ce | Jan Kiszka | so->so_state |= SS_NOFDREF; |
513 | f0cbd3ec | bellard | } else
|
514 | f0cbd3ec | bellard | so->so_state &= ~SS_ISFCONNECTING; |
515 | 3b46e624 | ths | |
516 | f0cbd3ec | bellard | } |
517 | f0cbd3ec | bellard | tcp_input((struct mbuf *)NULL, sizeof(struct ip),so); |
518 | f0cbd3ec | bellard | } /* SS_ISFCONNECTING */
|
519 | f0cbd3ec | bellard | #endif
|
520 | f0cbd3ec | bellard | } |
521 | 3b46e624 | ths | |
522 | f0cbd3ec | bellard | /*
|
523 | f0cbd3ec | bellard | * Now UDP sockets.
|
524 | f0cbd3ec | bellard | * Incoming packets are sent straight away, they're not buffered.
|
525 | f0cbd3ec | bellard | * Incoming UDP data isn't buffered either.
|
526 | f0cbd3ec | bellard | */
|
527 | 460fec67 | Jan Kiszka | for (so = slirp->udb.so_next; so != &slirp->udb;
|
528 | 460fec67 | Jan Kiszka | so = so_next) { |
529 | f0cbd3ec | bellard | so_next = so->so_next; |
530 | 3b46e624 | ths | |
531 | f0cbd3ec | bellard | if (so->s != -1 && FD_ISSET(so->s, readfds)) { |
532 | f0cbd3ec | bellard | sorecvfrom(so); |
533 | f0cbd3ec | bellard | } |
534 | f0cbd3ec | bellard | } |
535 | f0cbd3ec | bellard | } |
536 | 5fafdf24 | ths | |
537 | f0cbd3ec | bellard | /*
|
538 | f0cbd3ec | bellard | * See if we can start outputting
|
539 | f0cbd3ec | bellard | */
|
540 | 460fec67 | Jan Kiszka | if (slirp->if_queued) {
|
541 | 460fec67 | Jan Kiszka | if_start(slirp); |
542 | 460fec67 | Jan Kiszka | } |
543 | b1c99fcd | Jan Kiszka | } |
544 | 02d2c54c | bellard | |
545 | 02d2c54c | bellard | /* clear global file descriptor sets.
|
546 | 02d2c54c | bellard | * these reside on the stack in vl.c
|
547 | 02d2c54c | bellard | * so they're unusable if we're not in
|
548 | 02d2c54c | bellard | * slirp_select_fill or slirp_select_poll.
|
549 | 02d2c54c | bellard | */
|
550 | 02d2c54c | bellard | global_readfds = NULL;
|
551 | 02d2c54c | bellard | global_writefds = NULL;
|
552 | 02d2c54c | bellard | global_xfds = NULL;
|
553 | f0cbd3ec | bellard | } |
554 | f0cbd3ec | bellard | |
555 | f0cbd3ec | bellard | #define ETH_ALEN 6 |
556 | f0cbd3ec | bellard | #define ETH_HLEN 14 |
557 | f0cbd3ec | bellard | |
558 | f0cbd3ec | bellard | #define ETH_P_IP 0x0800 /* Internet Protocol packet */ |
559 | f0cbd3ec | bellard | #define ETH_P_ARP 0x0806 /* Address Resolution packet */ |
560 | f0cbd3ec | bellard | |
561 | f0cbd3ec | bellard | #define ARPOP_REQUEST 1 /* ARP request */ |
562 | f0cbd3ec | bellard | #define ARPOP_REPLY 2 /* ARP reply */ |
563 | f0cbd3ec | bellard | |
564 | 5fafdf24 | ths | struct ethhdr
|
565 | f0cbd3ec | bellard | { |
566 | f0cbd3ec | bellard | unsigned char h_dest[ETH_ALEN]; /* destination eth addr */ |
567 | f0cbd3ec | bellard | unsigned char h_source[ETH_ALEN]; /* source ether addr */ |
568 | f0cbd3ec | bellard | unsigned short h_proto; /* packet type ID field */ |
569 | f0cbd3ec | bellard | }; |
570 | f0cbd3ec | bellard | |
571 | f0cbd3ec | bellard | struct arphdr
|
572 | f0cbd3ec | bellard | { |
573 | f0cbd3ec | bellard | unsigned short ar_hrd; /* format of hardware address */ |
574 | f0cbd3ec | bellard | unsigned short ar_pro; /* format of protocol address */ |
575 | f0cbd3ec | bellard | unsigned char ar_hln; /* length of hardware address */ |
576 | f0cbd3ec | bellard | unsigned char ar_pln; /* length of protocol address */ |
577 | f0cbd3ec | bellard | unsigned short ar_op; /* ARP opcode (command) */ |
578 | f0cbd3ec | bellard | |
579 | f0cbd3ec | bellard | /*
|
580 | f0cbd3ec | bellard | * Ethernet looks like this : This bit is variable sized however...
|
581 | f0cbd3ec | bellard | */
|
582 | f0cbd3ec | bellard | unsigned char ar_sha[ETH_ALEN]; /* sender hardware address */ |
583 | a13a4126 | Jan Kiszka | uint32_t ar_sip; /* sender IP address */
|
584 | f0cbd3ec | bellard | unsigned char ar_tha[ETH_ALEN]; /* target hardware address */ |
585 | a13a4126 | Jan Kiszka | uint32_t ar_tip ; /* target IP address */
|
586 | a13a4126 | Jan Kiszka | } __attribute__((packed)); |
587 | f0cbd3ec | bellard | |
588 | 460fec67 | Jan Kiszka | static void arp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
589 | f0cbd3ec | bellard | { |
590 | f0cbd3ec | bellard | struct ethhdr *eh = (struct ethhdr *)pkt; |
591 | f0cbd3ec | bellard | struct arphdr *ah = (struct arphdr *)(pkt + ETH_HLEN); |
592 | f0cbd3ec | bellard | uint8_t arp_reply[ETH_HLEN + sizeof(struct arphdr)]; |
593 | f0cbd3ec | bellard | struct ethhdr *reh = (struct ethhdr *)arp_reply; |
594 | f0cbd3ec | bellard | struct arphdr *rah = (struct arphdr *)(arp_reply + ETH_HLEN); |
595 | f0cbd3ec | bellard | int ar_op;
|
596 | a3d4af03 | bellard | struct ex_list *ex_ptr;
|
597 | f0cbd3ec | bellard | |
598 | f0cbd3ec | bellard | ar_op = ntohs(ah->ar_op); |
599 | f0cbd3ec | bellard | switch(ar_op) {
|
600 | f0cbd3ec | bellard | case ARPOP_REQUEST:
|
601 | 460fec67 | Jan Kiszka | if ((ah->ar_tip & slirp->vnetwork_mask.s_addr) ==
|
602 | 460fec67 | Jan Kiszka | slirp->vnetwork_addr.s_addr) { |
603 | 460fec67 | Jan Kiszka | if (ah->ar_tip == slirp->vnameserver_addr.s_addr ||
|
604 | 460fec67 | Jan Kiszka | ah->ar_tip == slirp->vhost_addr.s_addr) |
605 | a3d4af03 | bellard | goto arp_ok;
|
606 | 460fec67 | Jan Kiszka | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
|
607 | a13a4126 | Jan Kiszka | if (ex_ptr->ex_addr.s_addr == ah->ar_tip)
|
608 | a3d4af03 | bellard | goto arp_ok;
|
609 | a3d4af03 | bellard | } |
610 | a3d4af03 | bellard | return;
|
611 | a3d4af03 | bellard | arp_ok:
|
612 | f0cbd3ec | bellard | /* XXX: make an ARP request to have the client address */
|
613 | 460fec67 | Jan Kiszka | memcpy(slirp->client_ethaddr, eh->h_source, ETH_ALEN); |
614 | f0cbd3ec | bellard | |
615 | f0cbd3ec | bellard | /* ARP request for alias/dns mac address */
|
616 | f0cbd3ec | bellard | memcpy(reh->h_dest, pkt + ETH_ALEN, ETH_ALEN); |
617 | a13a4126 | Jan Kiszka | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4);
|
618 | a13a4126 | Jan Kiszka | memcpy(&reh->h_source[2], &ah->ar_tip, 4); |
619 | f0cbd3ec | bellard | reh->h_proto = htons(ETH_P_ARP); |
620 | f0cbd3ec | bellard | |
621 | f0cbd3ec | bellard | rah->ar_hrd = htons(1);
|
622 | f0cbd3ec | bellard | rah->ar_pro = htons(ETH_P_IP); |
623 | f0cbd3ec | bellard | rah->ar_hln = ETH_ALEN; |
624 | f0cbd3ec | bellard | rah->ar_pln = 4;
|
625 | f0cbd3ec | bellard | rah->ar_op = htons(ARPOP_REPLY); |
626 | f0cbd3ec | bellard | memcpy(rah->ar_sha, reh->h_source, ETH_ALEN); |
627 | a13a4126 | Jan Kiszka | rah->ar_sip = ah->ar_tip; |
628 | f0cbd3ec | bellard | memcpy(rah->ar_tha, ah->ar_sha, ETH_ALEN); |
629 | a13a4126 | Jan Kiszka | rah->ar_tip = ah->ar_sip; |
630 | 9f8bd042 | Jan Kiszka | slirp_output(slirp->opaque, arp_reply, sizeof(arp_reply));
|
631 | f0cbd3ec | bellard | } |
632 | f0cbd3ec | bellard | break;
|
633 | de806f07 | bellard | case ARPOP_REPLY:
|
634 | de806f07 | bellard | /* reply to request of client mac address ? */
|
635 | 460fec67 | Jan Kiszka | if (!memcmp(slirp->client_ethaddr, zero_ethaddr, ETH_ALEN) &&
|
636 | 460fec67 | Jan Kiszka | ah->ar_sip == slirp->client_ipaddr.s_addr) { |
637 | 460fec67 | Jan Kiszka | memcpy(slirp->client_ethaddr, ah->ar_sha, ETH_ALEN); |
638 | de806f07 | bellard | } |
639 | de806f07 | bellard | break;
|
640 | f0cbd3ec | bellard | default:
|
641 | f0cbd3ec | bellard | break;
|
642 | f0cbd3ec | bellard | } |
643 | f0cbd3ec | bellard | } |
644 | f0cbd3ec | bellard | |
645 | 9f8bd042 | Jan Kiszka | void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
646 | f0cbd3ec | bellard | { |
647 | f0cbd3ec | bellard | struct mbuf *m;
|
648 | f0cbd3ec | bellard | int proto;
|
649 | f0cbd3ec | bellard | |
650 | f0cbd3ec | bellard | if (pkt_len < ETH_HLEN)
|
651 | f0cbd3ec | bellard | return;
|
652 | 3b46e624 | ths | |
653 | f0cbd3ec | bellard | proto = ntohs(*(uint16_t *)(pkt + 12));
|
654 | f0cbd3ec | bellard | switch(proto) {
|
655 | f0cbd3ec | bellard | case ETH_P_ARP:
|
656 | 460fec67 | Jan Kiszka | arp_input(slirp, pkt, pkt_len); |
657 | f0cbd3ec | bellard | break;
|
658 | f0cbd3ec | bellard | case ETH_P_IP:
|
659 | 460fec67 | Jan Kiszka | m = m_get(slirp); |
660 | f0cbd3ec | bellard | if (!m)
|
661 | f0cbd3ec | bellard | return;
|
662 | 38f3e7c2 | bellard | /* Note: we add to align the IP header */
|
663 | e8e880a7 | aurel32 | if (M_FREEROOM(m) < pkt_len + 2) { |
664 | e8e880a7 | aurel32 | m_inc(m, pkt_len + 2);
|
665 | e8e880a7 | aurel32 | } |
666 | 38f3e7c2 | bellard | m->m_len = pkt_len + 2;
|
667 | 38f3e7c2 | bellard | memcpy(m->m_data + 2, pkt, pkt_len);
|
668 | f0cbd3ec | bellard | |
669 | 38f3e7c2 | bellard | m->m_data += 2 + ETH_HLEN;
|
670 | 38f3e7c2 | bellard | m->m_len -= 2 + ETH_HLEN;
|
671 | f0cbd3ec | bellard | |
672 | f0cbd3ec | bellard | ip_input(m); |
673 | f0cbd3ec | bellard | break;
|
674 | f0cbd3ec | bellard | default:
|
675 | f0cbd3ec | bellard | break;
|
676 | f0cbd3ec | bellard | } |
677 | f0cbd3ec | bellard | } |
678 | f0cbd3ec | bellard | |
679 | f0cbd3ec | bellard | /* output the IP packet to the ethernet device */
|
680 | 460fec67 | Jan Kiszka | void if_encap(Slirp *slirp, const uint8_t *ip_data, int ip_data_len) |
681 | f0cbd3ec | bellard | { |
682 | f0cbd3ec | bellard | uint8_t buf[1600];
|
683 | f0cbd3ec | bellard | struct ethhdr *eh = (struct ethhdr *)buf; |
684 | f0cbd3ec | bellard | |
685 | f0cbd3ec | bellard | if (ip_data_len + ETH_HLEN > sizeof(buf)) |
686 | f0cbd3ec | bellard | return;
|
687 | de806f07 | bellard | |
688 | 460fec67 | Jan Kiszka | if (!memcmp(slirp->client_ethaddr, zero_ethaddr, ETH_ALEN)) {
|
689 | de806f07 | bellard | uint8_t arp_req[ETH_HLEN + sizeof(struct arphdr)]; |
690 | de806f07 | bellard | struct ethhdr *reh = (struct ethhdr *)arp_req; |
691 | de806f07 | bellard | struct arphdr *rah = (struct arphdr *)(arp_req + ETH_HLEN); |
692 | de806f07 | bellard | const struct ip *iph = (const struct ip *)ip_data; |
693 | de806f07 | bellard | |
694 | de806f07 | bellard | /* If the client addr is not known, there is no point in
|
695 | de806f07 | bellard | sending the packet to it. Normally the sender should have
|
696 | de806f07 | bellard | done an ARP request to get its MAC address. Here we do it
|
697 | de806f07 | bellard | in place of sending the packet and we hope that the sender
|
698 | de806f07 | bellard | will retry sending its packet. */
|
699 | de806f07 | bellard | memset(reh->h_dest, 0xff, ETH_ALEN);
|
700 | a13a4126 | Jan Kiszka | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4);
|
701 | 460fec67 | Jan Kiszka | memcpy(&reh->h_source[2], &slirp->vhost_addr, 4); |
702 | de806f07 | bellard | reh->h_proto = htons(ETH_P_ARP); |
703 | de806f07 | bellard | rah->ar_hrd = htons(1);
|
704 | de806f07 | bellard | rah->ar_pro = htons(ETH_P_IP); |
705 | de806f07 | bellard | rah->ar_hln = ETH_ALEN; |
706 | de806f07 | bellard | rah->ar_pln = 4;
|
707 | de806f07 | bellard | rah->ar_op = htons(ARPOP_REQUEST); |
708 | de806f07 | bellard | /* source hw addr */
|
709 | a13a4126 | Jan Kiszka | memcpy(rah->ar_sha, special_ethaddr, ETH_ALEN - 4);
|
710 | 460fec67 | Jan Kiszka | memcpy(&rah->ar_sha[2], &slirp->vhost_addr, 4); |
711 | de806f07 | bellard | /* source IP */
|
712 | 460fec67 | Jan Kiszka | rah->ar_sip = slirp->vhost_addr.s_addr; |
713 | de806f07 | bellard | /* target hw addr (none) */
|
714 | de806f07 | bellard | memset(rah->ar_tha, 0, ETH_ALEN);
|
715 | de806f07 | bellard | /* target IP */
|
716 | a13a4126 | Jan Kiszka | rah->ar_tip = iph->ip_dst.s_addr; |
717 | 460fec67 | Jan Kiszka | slirp->client_ipaddr = iph->ip_dst; |
718 | 9f8bd042 | Jan Kiszka | slirp_output(slirp->opaque, arp_req, sizeof(arp_req));
|
719 | de806f07 | bellard | } else {
|
720 | 460fec67 | Jan Kiszka | memcpy(eh->h_dest, slirp->client_ethaddr, ETH_ALEN); |
721 | a13a4126 | Jan Kiszka | memcpy(eh->h_source, special_ethaddr, ETH_ALEN - 4);
|
722 | de806f07 | bellard | /* XXX: not correct */
|
723 | 460fec67 | Jan Kiszka | memcpy(&eh->h_source[2], &slirp->vhost_addr, 4); |
724 | de806f07 | bellard | eh->h_proto = htons(ETH_P_IP); |
725 | de806f07 | bellard | memcpy(buf + sizeof(struct ethhdr), ip_data, ip_data_len); |
726 | 9f8bd042 | Jan Kiszka | slirp_output(slirp->opaque, buf, ip_data_len + ETH_HLEN); |
727 | de806f07 | bellard | } |
728 | f0cbd3ec | bellard | } |
729 | 9bf05444 | bellard | |
730 | 9c12a6f2 | Jan Kiszka | /* Drop host forwarding rule, return 0 if found. */
|
731 | 9f8bd042 | Jan Kiszka | int slirp_remove_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
732 | 9f8bd042 | Jan Kiszka | int host_port)
|
733 | c1261d8d | Alexander Graf | { |
734 | c1261d8d | Alexander Graf | struct socket *so;
|
735 | 460fec67 | Jan Kiszka | struct socket *head = (is_udp ? &slirp->udb : &slirp->tcb);
|
736 | 2ad82cf9 | Jan Kiszka | struct sockaddr_in addr;
|
737 | 2ad82cf9 | Jan Kiszka | int port = htons(host_port);
|
738 | 2ad82cf9 | Jan Kiszka | socklen_t addr_len; |
739 | c1261d8d | Alexander Graf | |
740 | c1261d8d | Alexander Graf | for (so = head->so_next; so != head; so = so->so_next) {
|
741 | 2ad82cf9 | Jan Kiszka | addr_len = sizeof(addr);
|
742 | 9c12a6f2 | Jan Kiszka | if ((so->so_state & SS_HOSTFWD) &&
|
743 | 9c12a6f2 | Jan Kiszka | getsockname(so->s, (struct sockaddr *)&addr, &addr_len) == 0 && |
744 | 3c6a0580 | Jan Kiszka | addr.sin_addr.s_addr == host_addr.s_addr && |
745 | 2ad82cf9 | Jan Kiszka | addr.sin_port == port) { |
746 | c1261d8d | Alexander Graf | close(so->s); |
747 | c1261d8d | Alexander Graf | sofree(so); |
748 | 9c12a6f2 | Jan Kiszka | return 0; |
749 | c1261d8d | Alexander Graf | } |
750 | c1261d8d | Alexander Graf | } |
751 | c1261d8d | Alexander Graf | |
752 | 9c12a6f2 | Jan Kiszka | return -1; |
753 | c1261d8d | Alexander Graf | } |
754 | c1261d8d | Alexander Graf | |
755 | 9f8bd042 | Jan Kiszka | int slirp_add_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
756 | 9f8bd042 | Jan Kiszka | int host_port, struct in_addr guest_addr, int guest_port) |
757 | 9bf05444 | bellard | { |
758 | a13a4126 | Jan Kiszka | if (!guest_addr.s_addr) {
|
759 | 460fec67 | Jan Kiszka | guest_addr = slirp->vdhcp_startaddr; |
760 | a13a4126 | Jan Kiszka | } |
761 | 9bf05444 | bellard | if (is_udp) {
|
762 | 460fec67 | Jan Kiszka | if (!udp_listen(slirp, host_addr.s_addr, htons(host_port),
|
763 | 460fec67 | Jan Kiszka | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) |
764 | 9bf05444 | bellard | return -1; |
765 | 9bf05444 | bellard | } else {
|
766 | 460fec67 | Jan Kiszka | if (!tcp_listen(slirp, host_addr.s_addr, htons(host_port),
|
767 | 460fec67 | Jan Kiszka | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) |
768 | 9bf05444 | bellard | return -1; |
769 | 9bf05444 | bellard | } |
770 | 9bf05444 | bellard | return 0; |
771 | 9bf05444 | bellard | } |
772 | a3d4af03 | bellard | |
773 | 9f8bd042 | Jan Kiszka | int slirp_add_exec(Slirp *slirp, int do_pty, const void *args, |
774 | bb53fc53 | Jan Kiszka | struct in_addr *guest_addr, int guest_port) |
775 | a3d4af03 | bellard | { |
776 | bb53fc53 | Jan Kiszka | if (!guest_addr->s_addr) {
|
777 | bb53fc53 | Jan Kiszka | guest_addr->s_addr = slirp->vnetwork_addr.s_addr | |
778 | 460fec67 | Jan Kiszka | (htonl(0x0204) & ~slirp->vnetwork_mask.s_addr);
|
779 | c92ef6a2 | Jan Kiszka | } |
780 | bb53fc53 | Jan Kiszka | if ((guest_addr->s_addr & slirp->vnetwork_mask.s_addr) !=
|
781 | 460fec67 | Jan Kiszka | slirp->vnetwork_addr.s_addr || |
782 | bb53fc53 | Jan Kiszka | guest_addr->s_addr == slirp->vhost_addr.s_addr || |
783 | bb53fc53 | Jan Kiszka | guest_addr->s_addr == slirp->vnameserver_addr.s_addr) { |
784 | a13a4126 | Jan Kiszka | return -1; |
785 | a13a4126 | Jan Kiszka | } |
786 | bb53fc53 | Jan Kiszka | return add_exec(&slirp->exec_list, do_pty, (char *)args, *guest_addr, |
787 | a13a4126 | Jan Kiszka | htons(guest_port)); |
788 | a3d4af03 | bellard | } |
789 | e1c5a2b3 | aliguori | |
790 | e1c5a2b3 | aliguori | ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags) |
791 | e1c5a2b3 | aliguori | { |
792 | e1c5a2b3 | aliguori | if (so->s == -1 && so->extra) { |
793 | e1c5a2b3 | aliguori | qemu_chr_write(so->extra, buf, len); |
794 | e1c5a2b3 | aliguori | return len;
|
795 | e1c5a2b3 | aliguori | } |
796 | e1c5a2b3 | aliguori | |
797 | e1c5a2b3 | aliguori | return send(so->s, buf, len, flags);
|
798 | e1c5a2b3 | aliguori | } |
799 | e1c5a2b3 | aliguori | |
800 | a13a4126 | Jan Kiszka | static struct socket * |
801 | 460fec67 | Jan Kiszka | slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port) |
802 | e1c5a2b3 | aliguori | { |
803 | a13a4126 | Jan Kiszka | struct socket *so;
|
804 | e1c5a2b3 | aliguori | |
805 | 460fec67 | Jan Kiszka | for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) {
|
806 | a13a4126 | Jan Kiszka | if (so->so_faddr.s_addr == guest_addr.s_addr &&
|
807 | a13a4126 | Jan Kiszka | htons(so->so_fport) == guest_port) { |
808 | a13a4126 | Jan Kiszka | return so;
|
809 | a13a4126 | Jan Kiszka | } |
810 | a13a4126 | Jan Kiszka | } |
811 | a13a4126 | Jan Kiszka | return NULL; |
812 | e1c5a2b3 | aliguori | } |
813 | e1c5a2b3 | aliguori | |
814 | 9f8bd042 | Jan Kiszka | size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr,
|
815 | 9f8bd042 | Jan Kiszka | int guest_port)
|
816 | e1c5a2b3 | aliguori | { |
817 | e1c5a2b3 | aliguori | struct iovec iov[2]; |
818 | e1c5a2b3 | aliguori | struct socket *so;
|
819 | e1c5a2b3 | aliguori | |
820 | 460fec67 | Jan Kiszka | so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); |
821 | e1c5a2b3 | aliguori | |
822 | e1c5a2b3 | aliguori | if (!so || so->so_state & SS_NOFDREF)
|
823 | e1c5a2b3 | aliguori | return 0; |
824 | e1c5a2b3 | aliguori | |
825 | e1c5a2b3 | aliguori | if (!CONN_CANFRCV(so) || so->so_snd.sb_cc >= (so->so_snd.sb_datalen/2)) |
826 | e1c5a2b3 | aliguori | return 0; |
827 | e1c5a2b3 | aliguori | |
828 | e1c5a2b3 | aliguori | return sopreprbuf(so, iov, NULL); |
829 | e1c5a2b3 | aliguori | } |
830 | e1c5a2b3 | aliguori | |
831 | 9f8bd042 | Jan Kiszka | void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr, int guest_port, |
832 | c92ef6a2 | Jan Kiszka | const uint8_t *buf, int size) |
833 | e1c5a2b3 | aliguori | { |
834 | e1c5a2b3 | aliguori | int ret;
|
835 | 460fec67 | Jan Kiszka | struct socket *so = slirp_find_ctl_socket(slirp, guest_addr, guest_port);
|
836 | a13a4126 | Jan Kiszka | |
837 | e1c5a2b3 | aliguori | if (!so)
|
838 | e1c5a2b3 | aliguori | return;
|
839 | e1c5a2b3 | aliguori | |
840 | 0580ac91 | blueswir1 | ret = soreadbuf(so, (const char *)buf, size); |
841 | e1c5a2b3 | aliguori | |
842 | e1c5a2b3 | aliguori | if (ret > 0) |
843 | e1c5a2b3 | aliguori | tcp_output(sototcpcb(so)); |
844 | e1c5a2b3 | aliguori | } |
845 | 062e5527 | aliguori | |
846 | 062e5527 | aliguori | static void slirp_tcp_save(QEMUFile *f, struct tcpcb *tp) |
847 | 062e5527 | aliguori | { |
848 | 062e5527 | aliguori | int i;
|
849 | 062e5527 | aliguori | |
850 | 062e5527 | aliguori | qemu_put_sbe16(f, tp->t_state); |
851 | 062e5527 | aliguori | for (i = 0; i < TCPT_NTIMERS; i++) |
852 | 062e5527 | aliguori | qemu_put_sbe16(f, tp->t_timer[i]); |
853 | 062e5527 | aliguori | qemu_put_sbe16(f, tp->t_rxtshift); |
854 | 062e5527 | aliguori | qemu_put_sbe16(f, tp->t_rxtcur); |
855 | 062e5527 | aliguori | qemu_put_sbe16(f, tp->t_dupacks); |
856 | 062e5527 | aliguori | qemu_put_be16(f, tp->t_maxseg); |
857 | 062e5527 | aliguori | qemu_put_sbyte(f, tp->t_force); |
858 | 062e5527 | aliguori | qemu_put_be16(f, tp->t_flags); |
859 | 062e5527 | aliguori | qemu_put_be32(f, tp->snd_una); |
860 | 062e5527 | aliguori | qemu_put_be32(f, tp->snd_nxt); |
861 | 062e5527 | aliguori | qemu_put_be32(f, tp->snd_up); |
862 | 062e5527 | aliguori | qemu_put_be32(f, tp->snd_wl1); |
863 | 062e5527 | aliguori | qemu_put_be32(f, tp->snd_wl2); |
864 | 062e5527 | aliguori | qemu_put_be32(f, tp->iss); |
865 | 062e5527 | aliguori | qemu_put_be32(f, tp->snd_wnd); |
866 | 062e5527 | aliguori | qemu_put_be32(f, tp->rcv_wnd); |
867 | 062e5527 | aliguori | qemu_put_be32(f, tp->rcv_nxt); |
868 | 062e5527 | aliguori | qemu_put_be32(f, tp->rcv_up); |
869 | 062e5527 | aliguori | qemu_put_be32(f, tp->irs); |
870 | 062e5527 | aliguori | qemu_put_be32(f, tp->rcv_adv); |
871 | 062e5527 | aliguori | qemu_put_be32(f, tp->snd_max); |
872 | 062e5527 | aliguori | qemu_put_be32(f, tp->snd_cwnd); |
873 | 062e5527 | aliguori | qemu_put_be32(f, tp->snd_ssthresh); |
874 | 062e5527 | aliguori | qemu_put_sbe16(f, tp->t_idle); |
875 | 062e5527 | aliguori | qemu_put_sbe16(f, tp->t_rtt); |
876 | 062e5527 | aliguori | qemu_put_be32(f, tp->t_rtseq); |
877 | 062e5527 | aliguori | qemu_put_sbe16(f, tp->t_srtt); |
878 | 062e5527 | aliguori | qemu_put_sbe16(f, tp->t_rttvar); |
879 | 062e5527 | aliguori | qemu_put_be16(f, tp->t_rttmin); |
880 | 062e5527 | aliguori | qemu_put_be32(f, tp->max_sndwnd); |
881 | 062e5527 | aliguori | qemu_put_byte(f, tp->t_oobflags); |
882 | 062e5527 | aliguori | qemu_put_byte(f, tp->t_iobc); |
883 | 062e5527 | aliguori | qemu_put_sbe16(f, tp->t_softerror); |
884 | 062e5527 | aliguori | qemu_put_byte(f, tp->snd_scale); |
885 | 062e5527 | aliguori | qemu_put_byte(f, tp->rcv_scale); |
886 | 062e5527 | aliguori | qemu_put_byte(f, tp->request_r_scale); |
887 | 062e5527 | aliguori | qemu_put_byte(f, tp->requested_s_scale); |
888 | 062e5527 | aliguori | qemu_put_be32(f, tp->ts_recent); |
889 | 062e5527 | aliguori | qemu_put_be32(f, tp->ts_recent_age); |
890 | 062e5527 | aliguori | qemu_put_be32(f, tp->last_ack_sent); |
891 | 062e5527 | aliguori | } |
892 | 062e5527 | aliguori | |
893 | 062e5527 | aliguori | static void slirp_sbuf_save(QEMUFile *f, struct sbuf *sbuf) |
894 | 062e5527 | aliguori | { |
895 | 062e5527 | aliguori | uint32_t off; |
896 | 062e5527 | aliguori | |
897 | 062e5527 | aliguori | qemu_put_be32(f, sbuf->sb_cc); |
898 | 062e5527 | aliguori | qemu_put_be32(f, sbuf->sb_datalen); |
899 | 062e5527 | aliguori | off = (uint32_t)(sbuf->sb_wptr - sbuf->sb_data); |
900 | 062e5527 | aliguori | qemu_put_sbe32(f, off); |
901 | 062e5527 | aliguori | off = (uint32_t)(sbuf->sb_rptr - sbuf->sb_data); |
902 | 062e5527 | aliguori | qemu_put_sbe32(f, off); |
903 | 062e5527 | aliguori | qemu_put_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); |
904 | 062e5527 | aliguori | } |
905 | 062e5527 | aliguori | |
906 | 062e5527 | aliguori | static void slirp_socket_save(QEMUFile *f, struct socket *so) |
907 | 062e5527 | aliguori | { |
908 | 062e5527 | aliguori | qemu_put_be32(f, so->so_urgc); |
909 | 062e5527 | aliguori | qemu_put_be32(f, so->so_faddr.s_addr); |
910 | 062e5527 | aliguori | qemu_put_be32(f, so->so_laddr.s_addr); |
911 | 062e5527 | aliguori | qemu_put_be16(f, so->so_fport); |
912 | 062e5527 | aliguori | qemu_put_be16(f, so->so_lport); |
913 | 062e5527 | aliguori | qemu_put_byte(f, so->so_iptos); |
914 | 062e5527 | aliguori | qemu_put_byte(f, so->so_emu); |
915 | 062e5527 | aliguori | qemu_put_byte(f, so->so_type); |
916 | 062e5527 | aliguori | qemu_put_be32(f, so->so_state); |
917 | 062e5527 | aliguori | slirp_sbuf_save(f, &so->so_rcv); |
918 | 062e5527 | aliguori | slirp_sbuf_save(f, &so->so_snd); |
919 | 062e5527 | aliguori | slirp_tcp_save(f, so->so_tcpcb); |
920 | 062e5527 | aliguori | } |
921 | 062e5527 | aliguori | |
922 | 0a1f851e | Jan Kiszka | static void slirp_bootp_save(QEMUFile *f, Slirp *slirp) |
923 | 0a1f851e | Jan Kiszka | { |
924 | 0a1f851e | Jan Kiszka | int i;
|
925 | 0a1f851e | Jan Kiszka | |
926 | 0a1f851e | Jan Kiszka | for (i = 0; i < NB_BOOTP_CLIENTS; i++) { |
927 | 0a1f851e | Jan Kiszka | qemu_put_be16(f, slirp->bootp_clients[i].allocated); |
928 | 0a1f851e | Jan Kiszka | qemu_put_buffer(f, slirp->bootp_clients[i].macaddr, 6);
|
929 | 0a1f851e | Jan Kiszka | } |
930 | 0a1f851e | Jan Kiszka | } |
931 | 0a1f851e | Jan Kiszka | |
932 | 062e5527 | aliguori | static void slirp_state_save(QEMUFile *f, void *opaque) |
933 | 062e5527 | aliguori | { |
934 | 460fec67 | Jan Kiszka | Slirp *slirp = opaque; |
935 | 062e5527 | aliguori | struct ex_list *ex_ptr;
|
936 | 062e5527 | aliguori | |
937 | 460fec67 | Jan Kiszka | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next)
|
938 | 062e5527 | aliguori | if (ex_ptr->ex_pty == 3) { |
939 | 062e5527 | aliguori | struct socket *so;
|
940 | 460fec67 | Jan Kiszka | so = slirp_find_ctl_socket(slirp, ex_ptr->ex_addr, |
941 | 460fec67 | Jan Kiszka | ntohs(ex_ptr->ex_fport)); |
942 | 062e5527 | aliguori | if (!so)
|
943 | 062e5527 | aliguori | continue;
|
944 | 062e5527 | aliguori | |
945 | 062e5527 | aliguori | qemu_put_byte(f, 42);
|
946 | 062e5527 | aliguori | slirp_socket_save(f, so); |
947 | 062e5527 | aliguori | } |
948 | 062e5527 | aliguori | qemu_put_byte(f, 0);
|
949 | 285f7a62 | Jan Kiszka | |
950 | 460fec67 | Jan Kiszka | qemu_put_be16(f, slirp->ip_id); |
951 | 0a1f851e | Jan Kiszka | |
952 | 0a1f851e | Jan Kiszka | slirp_bootp_save(f, slirp); |
953 | 062e5527 | aliguori | } |
954 | 062e5527 | aliguori | |
955 | 062e5527 | aliguori | static void slirp_tcp_load(QEMUFile *f, struct tcpcb *tp) |
956 | 062e5527 | aliguori | { |
957 | 062e5527 | aliguori | int i;
|
958 | 062e5527 | aliguori | |
959 | 062e5527 | aliguori | tp->t_state = qemu_get_sbe16(f); |
960 | 062e5527 | aliguori | for (i = 0; i < TCPT_NTIMERS; i++) |
961 | 062e5527 | aliguori | tp->t_timer[i] = qemu_get_sbe16(f); |
962 | 062e5527 | aliguori | tp->t_rxtshift = qemu_get_sbe16(f); |
963 | 062e5527 | aliguori | tp->t_rxtcur = qemu_get_sbe16(f); |
964 | 062e5527 | aliguori | tp->t_dupacks = qemu_get_sbe16(f); |
965 | 062e5527 | aliguori | tp->t_maxseg = qemu_get_be16(f); |
966 | 062e5527 | aliguori | tp->t_force = qemu_get_sbyte(f); |
967 | 062e5527 | aliguori | tp->t_flags = qemu_get_be16(f); |
968 | 062e5527 | aliguori | tp->snd_una = qemu_get_be32(f); |
969 | 062e5527 | aliguori | tp->snd_nxt = qemu_get_be32(f); |
970 | 062e5527 | aliguori | tp->snd_up = qemu_get_be32(f); |
971 | 062e5527 | aliguori | tp->snd_wl1 = qemu_get_be32(f); |
972 | 062e5527 | aliguori | tp->snd_wl2 = qemu_get_be32(f); |
973 | 062e5527 | aliguori | tp->iss = qemu_get_be32(f); |
974 | 062e5527 | aliguori | tp->snd_wnd = qemu_get_be32(f); |
975 | 062e5527 | aliguori | tp->rcv_wnd = qemu_get_be32(f); |
976 | 062e5527 | aliguori | tp->rcv_nxt = qemu_get_be32(f); |
977 | 062e5527 | aliguori | tp->rcv_up = qemu_get_be32(f); |
978 | 062e5527 | aliguori | tp->irs = qemu_get_be32(f); |
979 | 062e5527 | aliguori | tp->rcv_adv = qemu_get_be32(f); |
980 | 062e5527 | aliguori | tp->snd_max = qemu_get_be32(f); |
981 | 062e5527 | aliguori | tp->snd_cwnd = qemu_get_be32(f); |
982 | 062e5527 | aliguori | tp->snd_ssthresh = qemu_get_be32(f); |
983 | 062e5527 | aliguori | tp->t_idle = qemu_get_sbe16(f); |
984 | 062e5527 | aliguori | tp->t_rtt = qemu_get_sbe16(f); |
985 | 062e5527 | aliguori | tp->t_rtseq = qemu_get_be32(f); |
986 | 062e5527 | aliguori | tp->t_srtt = qemu_get_sbe16(f); |
987 | 062e5527 | aliguori | tp->t_rttvar = qemu_get_sbe16(f); |
988 | 062e5527 | aliguori | tp->t_rttmin = qemu_get_be16(f); |
989 | 062e5527 | aliguori | tp->max_sndwnd = qemu_get_be32(f); |
990 | 062e5527 | aliguori | tp->t_oobflags = qemu_get_byte(f); |
991 | 062e5527 | aliguori | tp->t_iobc = qemu_get_byte(f); |
992 | 062e5527 | aliguori | tp->t_softerror = qemu_get_sbe16(f); |
993 | 062e5527 | aliguori | tp->snd_scale = qemu_get_byte(f); |
994 | 062e5527 | aliguori | tp->rcv_scale = qemu_get_byte(f); |
995 | 062e5527 | aliguori | tp->request_r_scale = qemu_get_byte(f); |
996 | 062e5527 | aliguori | tp->requested_s_scale = qemu_get_byte(f); |
997 | 062e5527 | aliguori | tp->ts_recent = qemu_get_be32(f); |
998 | 062e5527 | aliguori | tp->ts_recent_age = qemu_get_be32(f); |
999 | 062e5527 | aliguori | tp->last_ack_sent = qemu_get_be32(f); |
1000 | 062e5527 | aliguori | tcp_template(tp); |
1001 | 062e5527 | aliguori | } |
1002 | 062e5527 | aliguori | |
1003 | 062e5527 | aliguori | static int slirp_sbuf_load(QEMUFile *f, struct sbuf *sbuf) |
1004 | 062e5527 | aliguori | { |
1005 | 062e5527 | aliguori | uint32_t off, sb_cc, sb_datalen; |
1006 | 062e5527 | aliguori | |
1007 | 062e5527 | aliguori | sb_cc = qemu_get_be32(f); |
1008 | 062e5527 | aliguori | sb_datalen = qemu_get_be32(f); |
1009 | 062e5527 | aliguori | |
1010 | 062e5527 | aliguori | sbreserve(sbuf, sb_datalen); |
1011 | 062e5527 | aliguori | |
1012 | 062e5527 | aliguori | if (sbuf->sb_datalen != sb_datalen)
|
1013 | 062e5527 | aliguori | return -ENOMEM;
|
1014 | 062e5527 | aliguori | |
1015 | 062e5527 | aliguori | sbuf->sb_cc = sb_cc; |
1016 | 062e5527 | aliguori | |
1017 | 062e5527 | aliguori | off = qemu_get_sbe32(f); |
1018 | 062e5527 | aliguori | sbuf->sb_wptr = sbuf->sb_data + off; |
1019 | 062e5527 | aliguori | off = qemu_get_sbe32(f); |
1020 | 062e5527 | aliguori | sbuf->sb_rptr = sbuf->sb_data + off; |
1021 | 062e5527 | aliguori | qemu_get_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); |
1022 | 062e5527 | aliguori | |
1023 | 062e5527 | aliguori | return 0; |
1024 | 062e5527 | aliguori | } |
1025 | 062e5527 | aliguori | |
1026 | 062e5527 | aliguori | static int slirp_socket_load(QEMUFile *f, struct socket *so) |
1027 | 062e5527 | aliguori | { |
1028 | 062e5527 | aliguori | if (tcp_attach(so) < 0) |
1029 | 062e5527 | aliguori | return -ENOMEM;
|
1030 | 062e5527 | aliguori | |
1031 | 062e5527 | aliguori | so->so_urgc = qemu_get_be32(f); |
1032 | 062e5527 | aliguori | so->so_faddr.s_addr = qemu_get_be32(f); |
1033 | 062e5527 | aliguori | so->so_laddr.s_addr = qemu_get_be32(f); |
1034 | 062e5527 | aliguori | so->so_fport = qemu_get_be16(f); |
1035 | 062e5527 | aliguori | so->so_lport = qemu_get_be16(f); |
1036 | 062e5527 | aliguori | so->so_iptos = qemu_get_byte(f); |
1037 | 062e5527 | aliguori | so->so_emu = qemu_get_byte(f); |
1038 | 062e5527 | aliguori | so->so_type = qemu_get_byte(f); |
1039 | 062e5527 | aliguori | so->so_state = qemu_get_be32(f); |
1040 | 062e5527 | aliguori | if (slirp_sbuf_load(f, &so->so_rcv) < 0) |
1041 | 062e5527 | aliguori | return -ENOMEM;
|
1042 | 062e5527 | aliguori | if (slirp_sbuf_load(f, &so->so_snd) < 0) |
1043 | 062e5527 | aliguori | return -ENOMEM;
|
1044 | 062e5527 | aliguori | slirp_tcp_load(f, so->so_tcpcb); |
1045 | 062e5527 | aliguori | |
1046 | 062e5527 | aliguori | return 0; |
1047 | 062e5527 | aliguori | } |
1048 | 062e5527 | aliguori | |
1049 | 0a1f851e | Jan Kiszka | static void slirp_bootp_load(QEMUFile *f, Slirp *slirp) |
1050 | 0a1f851e | Jan Kiszka | { |
1051 | 0a1f851e | Jan Kiszka | int i;
|
1052 | 0a1f851e | Jan Kiszka | |
1053 | 0a1f851e | Jan Kiszka | for (i = 0; i < NB_BOOTP_CLIENTS; i++) { |
1054 | 0a1f851e | Jan Kiszka | slirp->bootp_clients[i].allocated = qemu_get_be16(f); |
1055 | 0a1f851e | Jan Kiszka | qemu_get_buffer(f, slirp->bootp_clients[i].macaddr, 6);
|
1056 | 0a1f851e | Jan Kiszka | } |
1057 | 0a1f851e | Jan Kiszka | } |
1058 | 0a1f851e | Jan Kiszka | |
1059 | 062e5527 | aliguori | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id) |
1060 | 062e5527 | aliguori | { |
1061 | 460fec67 | Jan Kiszka | Slirp *slirp = opaque; |
1062 | 062e5527 | aliguori | struct ex_list *ex_ptr;
|
1063 | 062e5527 | aliguori | int r;
|
1064 | 062e5527 | aliguori | |
1065 | 062e5527 | aliguori | while ((r = qemu_get_byte(f))) {
|
1066 | 062e5527 | aliguori | int ret;
|
1067 | 460fec67 | Jan Kiszka | struct socket *so = socreate(slirp);
|
1068 | 062e5527 | aliguori | |
1069 | 062e5527 | aliguori | if (!so)
|
1070 | 062e5527 | aliguori | return -ENOMEM;
|
1071 | 062e5527 | aliguori | |
1072 | 062e5527 | aliguori | ret = slirp_socket_load(f, so); |
1073 | 062e5527 | aliguori | |
1074 | 062e5527 | aliguori | if (ret < 0) |
1075 | 062e5527 | aliguori | return ret;
|
1076 | 062e5527 | aliguori | |
1077 | 460fec67 | Jan Kiszka | if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) !=
|
1078 | 460fec67 | Jan Kiszka | slirp->vnetwork_addr.s_addr) { |
1079 | 062e5527 | aliguori | return -EINVAL;
|
1080 | a13a4126 | Jan Kiszka | } |
1081 | 460fec67 | Jan Kiszka | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) {
|
1082 | 062e5527 | aliguori | if (ex_ptr->ex_pty == 3 && |
1083 | a13a4126 | Jan Kiszka | so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr && |
1084 | a13a4126 | Jan Kiszka | so->so_fport == ex_ptr->ex_fport) { |
1085 | 062e5527 | aliguori | break;
|
1086 | a13a4126 | Jan Kiszka | } |
1087 | a13a4126 | Jan Kiszka | } |
1088 | 062e5527 | aliguori | if (!ex_ptr)
|
1089 | 062e5527 | aliguori | return -EINVAL;
|
1090 | 062e5527 | aliguori | |
1091 | 0580ac91 | blueswir1 | so->extra = (void *)ex_ptr->ex_exec;
|
1092 | 062e5527 | aliguori | } |
1093 | 062e5527 | aliguori | |
1094 | 285f7a62 | Jan Kiszka | if (version_id >= 2) { |
1095 | 460fec67 | Jan Kiszka | slirp->ip_id = qemu_get_be16(f); |
1096 | 285f7a62 | Jan Kiszka | } |
1097 | 285f7a62 | Jan Kiszka | |
1098 | 0a1f851e | Jan Kiszka | if (version_id >= 3) { |
1099 | 0a1f851e | Jan Kiszka | slirp_bootp_load(f, slirp); |
1100 | 0a1f851e | Jan Kiszka | } |
1101 | 0a1f851e | Jan Kiszka | |
1102 | 062e5527 | aliguori | return 0; |
1103 | 062e5527 | aliguori | } |