bellard | d75a0b9 | 2008-10-17 17:31:57 +0000 | [diff] [blame] | 1 | /* |
| 2 | * libslirp glue |
| 3 | * |
| 4 | * Copyright (c) 2004-2008 Fabrice Bellard |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 24 | #include "qemu-common.h" |
Paolo Bonzini | 1de7afc | 2012-12-17 18:20:00 +0100 | [diff] [blame] | 25 | #include "qemu/timer.h" |
Paolo Bonzini | dccfcd0 | 2013-04-08 16:55:25 +0200 | [diff] [blame] | 26 | #include "sysemu/char.h" |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 27 | #include "slirp.h" |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 28 | #include "hw/hw.h" |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 29 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 30 | /* host loopback address */ |
| 31 | struct in_addr loopback_addr; |
Anders Waldenborg | 648cd33 | 2012-07-13 22:54:17 +0200 | [diff] [blame] | 32 | /* host loopback network mask */ |
Anthony Liguori | 0b8db8f | 2012-08-06 19:31:55 -0500 | [diff] [blame] | 33 | unsigned long loopback_mask; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 34 | |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 35 | /* emulated hosts use the MAC addr 52:55:IP:IP:IP:IP */ |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 36 | static const uint8_t special_ethaddr[ETH_ALEN] = { |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 37 | 0x52, 0x55, 0x00, 0x00, 0x00, 0x00 |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 38 | }; |
| 39 | |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 40 | static const uint8_t zero_ethaddr[ETH_ALEN] = { 0, 0, 0, 0, 0, 0 }; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 41 | |
Jan Kiszka | f1d99bb | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 42 | u_int curtime; |
Jan Kiszka | f1d99bb | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 43 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 44 | static QTAILQ_HEAD(slirp_instances, Slirp) slirp_instances = |
| 45 | QTAILQ_HEAD_INITIALIZER(slirp_instances); |
pbrook | 115defd | 2006-04-16 11:06:58 +0000 | [diff] [blame] | 46 | |
Stefan Weil | 9e3a95e | 2009-08-31 16:29:34 +0200 | [diff] [blame] | 47 | static struct in_addr dns_addr; |
| 48 | static u_int dns_addr_time; |
Ed Swierk | df7a86e | 2009-08-20 19:00:31 -0700 | [diff] [blame] | 49 | |
Liu Ping Fan | 9b0ca6c | 2013-08-25 10:01:20 +0800 | [diff] [blame] | 50 | #define TIMEOUT_FAST 2 /* milliseconds */ |
| 51 | #define TIMEOUT_SLOW 499 /* milliseconds */ |
| 52 | /* for the aging of certain requests like DNS */ |
| 53 | #define TIMEOUT_DEFAULT 1000 /* milliseconds */ |
| 54 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 55 | #ifdef _WIN32 |
| 56 | |
Ed Swierk | df7a86e | 2009-08-20 19:00:31 -0700 | [diff] [blame] | 57 | int get_dns_addr(struct in_addr *pdns_addr) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 58 | { |
bellard | 379ff53 | 2004-07-12 22:33:07 +0000 | [diff] [blame] | 59 | FIXED_INFO *FixedInfo=NULL; |
| 60 | ULONG BufLen; |
| 61 | DWORD ret; |
| 62 | IP_ADDR_STRING *pIPAddr; |
| 63 | struct in_addr tmp_addr; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 64 | |
Liu Ping Fan | 9b0ca6c | 2013-08-25 10:01:20 +0800 | [diff] [blame] | 65 | if (dns_addr.s_addr != 0 && (curtime - dns_addr_time) < TIMEOUT_DEFAULT) { |
Ed Swierk | df7a86e | 2009-08-20 19:00:31 -0700 | [diff] [blame] | 66 | *pdns_addr = dns_addr; |
| 67 | return 0; |
| 68 | } |
| 69 | |
bellard | 379ff53 | 2004-07-12 22:33:07 +0000 | [diff] [blame] | 70 | FixedInfo = (FIXED_INFO *)GlobalAlloc(GPTR, sizeof(FIXED_INFO)); |
| 71 | BufLen = sizeof(FIXED_INFO); |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 72 | |
bellard | 379ff53 | 2004-07-12 22:33:07 +0000 | [diff] [blame] | 73 | if (ERROR_BUFFER_OVERFLOW == GetNetworkParams(FixedInfo, &BufLen)) { |
| 74 | if (FixedInfo) { |
| 75 | GlobalFree(FixedInfo); |
| 76 | FixedInfo = NULL; |
| 77 | } |
| 78 | FixedInfo = GlobalAlloc(GPTR, BufLen); |
| 79 | } |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 80 | |
bellard | 379ff53 | 2004-07-12 22:33:07 +0000 | [diff] [blame] | 81 | if ((ret = GetNetworkParams(FixedInfo, &BufLen)) != ERROR_SUCCESS) { |
| 82 | printf("GetNetworkParams failed. ret = %08x\n", (u_int)ret ); |
| 83 | if (FixedInfo) { |
| 84 | GlobalFree(FixedInfo); |
| 85 | FixedInfo = NULL; |
| 86 | } |
| 87 | return -1; |
| 88 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 89 | |
bellard | 379ff53 | 2004-07-12 22:33:07 +0000 | [diff] [blame] | 90 | pIPAddr = &(FixedInfo->DnsServerList); |
| 91 | inet_aton(pIPAddr->IpAddress.String, &tmp_addr); |
| 92 | *pdns_addr = tmp_addr; |
Ed Swierk | df7a86e | 2009-08-20 19:00:31 -0700 | [diff] [blame] | 93 | dns_addr = tmp_addr; |
| 94 | dns_addr_time = curtime; |
bellard | 379ff53 | 2004-07-12 22:33:07 +0000 | [diff] [blame] | 95 | if (FixedInfo) { |
| 96 | GlobalFree(FixedInfo); |
| 97 | FixedInfo = NULL; |
| 98 | } |
| 99 | return 0; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 100 | } |
| 101 | |
Jan Kiszka | df46189 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 102 | static void winsock_cleanup(void) |
| 103 | { |
| 104 | WSACleanup(); |
| 105 | } |
| 106 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 107 | #else |
| 108 | |
Blue Swirl | 1e6eec8 | 2009-09-05 10:14:07 +0000 | [diff] [blame] | 109 | static struct stat dns_addr_stat; |
Ed Swierk | df7a86e | 2009-08-20 19:00:31 -0700 | [diff] [blame] | 110 | |
| 111 | int get_dns_addr(struct in_addr *pdns_addr) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 112 | { |
| 113 | char buff[512]; |
blueswir1 | 363a37d | 2008-08-21 17:58:08 +0000 | [diff] [blame] | 114 | char buff2[257]; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 115 | FILE *f; |
| 116 | int found = 0; |
| 117 | struct in_addr tmp_addr; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 118 | |
Ed Swierk | df7a86e | 2009-08-20 19:00:31 -0700 | [diff] [blame] | 119 | if (dns_addr.s_addr != 0) { |
| 120 | struct stat old_stat; |
Liu Ping Fan | 9b0ca6c | 2013-08-25 10:01:20 +0800 | [diff] [blame] | 121 | if ((curtime - dns_addr_time) < TIMEOUT_DEFAULT) { |
Ed Swierk | df7a86e | 2009-08-20 19:00:31 -0700 | [diff] [blame] | 122 | *pdns_addr = dns_addr; |
| 123 | return 0; |
| 124 | } |
| 125 | old_stat = dns_addr_stat; |
| 126 | if (stat("/etc/resolv.conf", &dns_addr_stat) != 0) |
| 127 | return -1; |
| 128 | if ((dns_addr_stat.st_dev == old_stat.st_dev) |
| 129 | && (dns_addr_stat.st_ino == old_stat.st_ino) |
| 130 | && (dns_addr_stat.st_size == old_stat.st_size) |
| 131 | && (dns_addr_stat.st_mtime == old_stat.st_mtime)) { |
| 132 | *pdns_addr = dns_addr; |
| 133 | return 0; |
| 134 | } |
| 135 | } |
| 136 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 137 | f = fopen("/etc/resolv.conf", "r"); |
| 138 | if (!f) |
| 139 | return -1; |
| 140 | |
blueswir1 | 31a60e2 | 2007-10-26 18:42:59 +0000 | [diff] [blame] | 141 | #ifdef DEBUG |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 142 | lprint("IP address of your DNS(s): "); |
blueswir1 | 31a60e2 | 2007-10-26 18:42:59 +0000 | [diff] [blame] | 143 | #endif |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 144 | while (fgets(buff, 512, f) != NULL) { |
| 145 | if (sscanf(buff, "nameserver%*[ \t]%256s", buff2) == 1) { |
| 146 | if (!inet_aton(buff2, &tmp_addr)) |
| 147 | continue; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 148 | /* If it's the first one, set it to dns_addr */ |
Ed Swierk | df7a86e | 2009-08-20 19:00:31 -0700 | [diff] [blame] | 149 | if (!found) { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 150 | *pdns_addr = tmp_addr; |
Ed Swierk | df7a86e | 2009-08-20 19:00:31 -0700 | [diff] [blame] | 151 | dns_addr = tmp_addr; |
| 152 | dns_addr_time = curtime; |
| 153 | } |
blueswir1 | 31a60e2 | 2007-10-26 18:42:59 +0000 | [diff] [blame] | 154 | #ifdef DEBUG |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 155 | else |
| 156 | lprint(", "); |
blueswir1 | 31a60e2 | 2007-10-26 18:42:59 +0000 | [diff] [blame] | 157 | #endif |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 158 | if (++found > 3) { |
blueswir1 | 31a60e2 | 2007-10-26 18:42:59 +0000 | [diff] [blame] | 159 | #ifdef DEBUG |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 160 | lprint("(more)"); |
blueswir1 | 31a60e2 | 2007-10-26 18:42:59 +0000 | [diff] [blame] | 161 | #endif |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 162 | break; |
blueswir1 | 31a60e2 | 2007-10-26 18:42:59 +0000 | [diff] [blame] | 163 | } |
| 164 | #ifdef DEBUG |
| 165 | else |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 166 | lprint("%s", inet_ntoa(tmp_addr)); |
blueswir1 | 31a60e2 | 2007-10-26 18:42:59 +0000 | [diff] [blame] | 167 | #endif |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 168 | } |
| 169 | } |
bellard | 1d43a71 | 2004-07-05 21:18:42 +0000 | [diff] [blame] | 170 | fclose(f); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 171 | if (!found) |
| 172 | return -1; |
| 173 | return 0; |
| 174 | } |
| 175 | |
| 176 | #endif |
| 177 | |
Jan Kiszka | df46189 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 178 | static void slirp_init_once(void) |
bellard | 379ff53 | 2004-07-12 22:33:07 +0000 | [diff] [blame] | 179 | { |
Jan Kiszka | df46189 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 180 | static int initialized; |
Jan Kiszka | df46189 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 181 | #ifdef _WIN32 |
| 182 | WSADATA Data; |
bellard | 379ff53 | 2004-07-12 22:33:07 +0000 | [diff] [blame] | 183 | #endif |
| 184 | |
Jan Kiszka | df46189 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 185 | if (initialized) { |
| 186 | return; |
| 187 | } |
| 188 | initialized = 1; |
| 189 | |
| 190 | #ifdef _WIN32 |
| 191 | WSAStartup(MAKEWORD(2,0), &Data); |
| 192 | atexit(winsock_cleanup); |
| 193 | #endif |
| 194 | |
| 195 | loopback_addr.s_addr = htonl(INADDR_LOOPBACK); |
Anders Waldenborg | 648cd33 | 2012-07-13 22:54:17 +0200 | [diff] [blame] | 196 | loopback_mask = htonl(IN_CLASSA_NET); |
Jan Kiszka | df46189 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 197 | } |
| 198 | |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 199 | static void slirp_state_save(QEMUFile *f, void *opaque); |
| 200 | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id); |
| 201 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 202 | Slirp *slirp_init(int restricted, struct in_addr vnetwork, |
| 203 | struct in_addr vnetmask, struct in_addr vhost, |
| 204 | const char *vhostname, const char *tftp_path, |
| 205 | const char *bootfile, struct in_addr vdhcp_start, |
Klaus Stengel | 63d2960 | 2012-10-27 19:53:39 +0200 | [diff] [blame] | 206 | struct in_addr vnameserver, const char **vdnssearch, |
| 207 | void *opaque) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 208 | { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 209 | Slirp *slirp = g_malloc0(sizeof(Slirp)); |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 210 | |
Jan Kiszka | df46189 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 211 | slirp_init_once(); |
bellard | 379ff53 | 2004-07-12 22:33:07 +0000 | [diff] [blame] | 212 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 213 | slirp->restricted = restricted; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 214 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 215 | if_init(slirp); |
| 216 | ip_init(slirp); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 217 | |
| 218 | /* Initialise mbufs *after* setting the MTU */ |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 219 | m_init(slirp); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 220 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 221 | slirp->vnetwork_addr = vnetwork; |
| 222 | slirp->vnetwork_mask = vnetmask; |
| 223 | slirp->vhost_addr = vhost; |
Jan Kiszka | c92ef6a | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 224 | if (vhostname) { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 225 | pstrcpy(slirp->client_hostname, sizeof(slirp->client_hostname), |
| 226 | vhostname); |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 227 | } |
Markus Armbruster | c64f50d | 2013-01-22 11:07:57 +0100 | [diff] [blame] | 228 | slirp->tftp_prefix = g_strdup(tftp_path); |
| 229 | slirp->bootp_filename = g_strdup(bootfile); |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 230 | slirp->vdhcp_startaddr = vdhcp_start; |
| 231 | slirp->vnameserver_addr = vnameserver; |
Jan Kiszka | ad196a9 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 232 | |
Klaus Stengel | 63d2960 | 2012-10-27 19:53:39 +0200 | [diff] [blame] | 233 | if (vdnssearch) { |
| 234 | translate_dnssearch(slirp, vdnssearch); |
| 235 | } |
| 236 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 237 | slirp->opaque = opaque; |
| 238 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 239 | register_savevm(NULL, "slirp", 0, 3, |
| 240 | slirp_state_save, slirp_state_load, slirp); |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 241 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 242 | QTAILQ_INSERT_TAIL(&slirp_instances, slirp, entry); |
Jan Kiszka | ad0d8c4 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 243 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 244 | return slirp; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 245 | } |
| 246 | |
Jan Kiszka | ad0d8c4 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 247 | void slirp_cleanup(Slirp *slirp) |
| 248 | { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 249 | QTAILQ_REMOVE(&slirp_instances, slirp, entry); |
Jan Kiszka | b1c99fc | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 250 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 251 | unregister_savevm(NULL, "slirp", slirp); |
Jan Kiszka | ad0d8c4 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 252 | |
Jan Kiszka | a68adc2 | 2012-02-29 19:14:23 +0100 | [diff] [blame] | 253 | ip_cleanup(slirp); |
| 254 | m_cleanup(slirp); |
| 255 | |
Klaus Stengel | 63d2960 | 2012-10-27 19:53:39 +0200 | [diff] [blame] | 256 | g_free(slirp->vdnssearch); |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 257 | g_free(slirp->tftp_prefix); |
| 258 | g_free(slirp->bootp_filename); |
| 259 | g_free(slirp); |
Jan Kiszka | ad0d8c4 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 260 | } |
| 261 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 262 | #define CONN_CANFSEND(so) (((so)->so_state & (SS_FCANTSENDMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) |
| 263 | #define CONN_CANFRCV(so) (((so)->so_state & (SS_FCANTRCVMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 264 | |
Liu Ping Fan | a42e9c4 | 2013-08-25 10:01:21 +0800 | [diff] [blame] | 265 | static void slirp_update_timeout(uint32_t *timeout) |
Stefano Stabellini | 7c7db75 | 2012-04-13 19:35:04 +0100 | [diff] [blame] | 266 | { |
Liu Ping Fan | a42e9c4 | 2013-08-25 10:01:21 +0800 | [diff] [blame] | 267 | Slirp *slirp; |
| 268 | uint32_t t; |
| 269 | |
| 270 | if (*timeout <= TIMEOUT_FAST) { |
| 271 | return; |
Stefano Stabellini | 7c7db75 | 2012-04-13 19:35:04 +0100 | [diff] [blame] | 272 | } |
Jan Kiszka | 426e3e6 | 2013-08-28 19:12:15 +0200 | [diff] [blame] | 273 | |
| 274 | t = MIN(1000, *timeout); |
Liu Ping Fan | a42e9c4 | 2013-08-25 10:01:21 +0800 | [diff] [blame] | 275 | |
| 276 | /* If we have tcp timeout with slirp, then we will fill @timeout with |
| 277 | * more precise value. |
| 278 | */ |
| 279 | QTAILQ_FOREACH(slirp, &slirp_instances, entry) { |
| 280 | if (slirp->time_fasttimo) { |
| 281 | *timeout = TIMEOUT_FAST; |
| 282 | return; |
| 283 | } |
| 284 | if (slirp->do_slowtimo) { |
| 285 | t = MIN(TIMEOUT_SLOW, t); |
| 286 | } |
| 287 | } |
| 288 | *timeout = t; |
Stefano Stabellini | 7c7db75 | 2012-04-13 19:35:04 +0100 | [diff] [blame] | 289 | } |
| 290 | |
Liu Ping Fan | a42e9c4 | 2013-08-25 10:01:21 +0800 | [diff] [blame] | 291 | void slirp_pollfds_fill(GArray *pollfds, uint32_t *timeout) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 292 | { |
Jan Kiszka | b1c99fc | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 293 | Slirp *slirp; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 294 | struct socket *so, *so_next; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 295 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 296 | if (QTAILQ_EMPTY(&slirp_instances)) { |
Jan Kiszka | d918f23 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 297 | return; |
| 298 | } |
| 299 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 300 | /* |
| 301 | * First, TCP sockets |
| 302 | */ |
Jan Kiszka | d918f23 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 303 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 304 | QTAILQ_FOREACH(slirp, &slirp_instances, entry) { |
| 305 | /* |
| 306 | * *_slowtimo needs calling if there are IP fragments |
| 307 | * in the fragment queue, or there are TCP connections active |
| 308 | */ |
Liu Ping Fan | fe0ff43 | 2013-08-25 10:01:19 +0800 | [diff] [blame] | 309 | slirp->do_slowtimo = ((slirp->tcb.so_next != &slirp->tcb) || |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 310 | (&slirp->ipq.ip_link != slirp->ipq.ip_link.next)); |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 311 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 312 | for (so = slirp->tcb.so_next; so != &slirp->tcb; |
| 313 | so = so_next) { |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 314 | int events = 0; |
| 315 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 316 | so_next = so->so_next; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 317 | |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 318 | so->pollfds_idx = -1; |
| 319 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 320 | /* |
| 321 | * See if we need a tcp_fasttimo |
| 322 | */ |
Liu Ping Fan | fe0ff43 | 2013-08-25 10:01:19 +0800 | [diff] [blame] | 323 | if (slirp->time_fasttimo == 0 && |
| 324 | so->so_tcpcb->t_flags & TF_DELACK) { |
| 325 | slirp->time_fasttimo = curtime; /* Flag when want a fasttimo */ |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 326 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 327 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 328 | /* |
| 329 | * NOFDREF can include still connecting to local-host, |
| 330 | * newly socreated() sockets etc. Don't want to select these. |
| 331 | */ |
| 332 | if (so->so_state & SS_NOFDREF || so->s == -1) { |
| 333 | continue; |
| 334 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 335 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 336 | /* |
| 337 | * Set for reading sockets which are accepting |
| 338 | */ |
| 339 | if (so->so_state & SS_FACCEPTCONN) { |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 340 | GPollFD pfd = { |
| 341 | .fd = so->s, |
| 342 | .events = G_IO_IN | G_IO_HUP | G_IO_ERR, |
| 343 | }; |
| 344 | so->pollfds_idx = pollfds->len; |
| 345 | g_array_append_val(pollfds, pfd); |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 346 | continue; |
| 347 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 348 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 349 | /* |
| 350 | * Set for writing sockets which are connecting |
| 351 | */ |
| 352 | if (so->so_state & SS_ISFCONNECTING) { |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 353 | GPollFD pfd = { |
| 354 | .fd = so->s, |
| 355 | .events = G_IO_OUT | G_IO_ERR, |
| 356 | }; |
| 357 | so->pollfds_idx = pollfds->len; |
| 358 | g_array_append_val(pollfds, pfd); |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 359 | continue; |
| 360 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 361 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 362 | /* |
| 363 | * Set for writing if we are connected, can send more, and |
| 364 | * we have something to send |
| 365 | */ |
| 366 | if (CONN_CANFSEND(so) && so->so_rcv.sb_cc) { |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 367 | events |= G_IO_OUT | G_IO_ERR; |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 368 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 369 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 370 | /* |
| 371 | * Set for reading (and urgent data) if we are connected, can |
| 372 | * receive more, and we have room for it XXX /2 ? |
| 373 | */ |
| 374 | if (CONN_CANFRCV(so) && |
| 375 | (so->so_snd.sb_cc < (so->so_snd.sb_datalen/2))) { |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 376 | events |= G_IO_IN | G_IO_HUP | G_IO_ERR | G_IO_PRI; |
| 377 | } |
| 378 | |
| 379 | if (events) { |
| 380 | GPollFD pfd = { |
| 381 | .fd = so->s, |
| 382 | .events = events, |
| 383 | }; |
| 384 | so->pollfds_idx = pollfds->len; |
| 385 | g_array_append_val(pollfds, pfd); |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 386 | } |
| 387 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 388 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 389 | /* |
| 390 | * UDP sockets |
| 391 | */ |
| 392 | for (so = slirp->udb.so_next; so != &slirp->udb; |
| 393 | so = so_next) { |
| 394 | so_next = so->so_next; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 395 | |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 396 | so->pollfds_idx = -1; |
| 397 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 398 | /* |
| 399 | * See if it's timed out |
| 400 | */ |
| 401 | if (so->so_expire) { |
| 402 | if (so->so_expire <= curtime) { |
| 403 | udp_detach(so); |
| 404 | continue; |
| 405 | } else { |
Liu Ping Fan | fe0ff43 | 2013-08-25 10:01:19 +0800 | [diff] [blame] | 406 | slirp->do_slowtimo = true; /* Let socket expire */ |
Jan Kiszka | e6d43cf | 2011-07-20 12:20:18 +0200 | [diff] [blame] | 407 | } |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 408 | } |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 409 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 410 | /* |
| 411 | * When UDP packets are received from over the |
| 412 | * link, they're sendto()'d straight away, so |
| 413 | * no need for setting for writing |
| 414 | * Limit the number of packets queued by this session |
| 415 | * to 4. Note that even though we try and limit this |
| 416 | * to 4 packets, the session could have more queued |
| 417 | * if the packets needed to be fragmented |
| 418 | * (XXX <= 4 ?) |
| 419 | */ |
| 420 | if ((so->so_state & SS_ISFCONNECTED) && so->so_queued <= 4) { |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 421 | GPollFD pfd = { |
| 422 | .fd = so->s, |
| 423 | .events = G_IO_IN | G_IO_HUP | G_IO_ERR, |
| 424 | }; |
| 425 | so->pollfds_idx = pollfds->len; |
| 426 | g_array_append_val(pollfds, pfd); |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 427 | } |
| 428 | } |
| 429 | |
| 430 | /* |
| 431 | * ICMP sockets |
| 432 | */ |
| 433 | for (so = slirp->icmp.so_next; so != &slirp->icmp; |
| 434 | so = so_next) { |
| 435 | so_next = so->so_next; |
| 436 | |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 437 | so->pollfds_idx = -1; |
| 438 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 439 | /* |
| 440 | * See if it's timed out |
| 441 | */ |
| 442 | if (so->so_expire) { |
| 443 | if (so->so_expire <= curtime) { |
| 444 | icmp_detach(so); |
| 445 | continue; |
| 446 | } else { |
Liu Ping Fan | fe0ff43 | 2013-08-25 10:01:19 +0800 | [diff] [blame] | 447 | slirp->do_slowtimo = true; /* Let socket expire */ |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 448 | } |
| 449 | } |
| 450 | |
| 451 | if (so->so_state & SS_ISFCONNECTED) { |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 452 | GPollFD pfd = { |
| 453 | .fd = so->s, |
| 454 | .events = G_IO_IN | G_IO_HUP | G_IO_ERR, |
| 455 | }; |
| 456 | so->pollfds_idx = pollfds->len; |
| 457 | g_array_append_val(pollfds, pfd); |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 458 | } |
| 459 | } |
| 460 | } |
Liu Ping Fan | a42e9c4 | 2013-08-25 10:01:21 +0800 | [diff] [blame] | 461 | slirp_update_timeout(timeout); |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 462 | } |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 463 | |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 464 | void slirp_pollfds_poll(GArray *pollfds, int select_error) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 465 | { |
Jan Kiszka | b1c99fc | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 466 | Slirp *slirp; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 467 | struct socket *so, *so_next; |
| 468 | int ret; |
| 469 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 470 | if (QTAILQ_EMPTY(&slirp_instances)) { |
Jan Kiszka | d918f23 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 471 | return; |
| 472 | } |
| 473 | |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 474 | curtime = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 475 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 476 | QTAILQ_FOREACH(slirp, &slirp_instances, entry) { |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 477 | /* |
| 478 | * See if anything has timed out |
| 479 | */ |
Liu Ping Fan | 9b0ca6c | 2013-08-25 10:01:20 +0800 | [diff] [blame] | 480 | if (slirp->time_fasttimo && |
| 481 | ((curtime - slirp->time_fasttimo) >= TIMEOUT_FAST)) { |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 482 | tcp_fasttimo(slirp); |
Liu Ping Fan | fe0ff43 | 2013-08-25 10:01:19 +0800 | [diff] [blame] | 483 | slirp->time_fasttimo = 0; |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 484 | } |
Liu Ping Fan | 9b0ca6c | 2013-08-25 10:01:20 +0800 | [diff] [blame] | 485 | if (slirp->do_slowtimo && |
| 486 | ((curtime - slirp->last_slowtimo) >= TIMEOUT_SLOW)) { |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 487 | ip_slowtimo(slirp); |
| 488 | tcp_slowtimo(slirp); |
Liu Ping Fan | fe0ff43 | 2013-08-25 10:01:19 +0800 | [diff] [blame] | 489 | slirp->last_slowtimo = curtime; |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 490 | } |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 491 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 492 | /* |
| 493 | * Check sockets |
| 494 | */ |
| 495 | if (!select_error) { |
| 496 | /* |
| 497 | * Check TCP sockets |
| 498 | */ |
| 499 | for (so = slirp->tcb.so_next; so != &slirp->tcb; |
| 500 | so = so_next) { |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 501 | int revents; |
| 502 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 503 | so_next = so->so_next; |
Jan Kiszka | e6d43cf | 2011-07-20 12:20:18 +0200 | [diff] [blame] | 504 | |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 505 | revents = 0; |
| 506 | if (so->pollfds_idx != -1) { |
| 507 | revents = g_array_index(pollfds, GPollFD, |
| 508 | so->pollfds_idx).revents; |
| 509 | } |
| 510 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 511 | if (so->so_state & SS_NOFDREF || so->s == -1) { |
| 512 | continue; |
| 513 | } |
Jan Kiszka | e6d43cf | 2011-07-20 12:20:18 +0200 | [diff] [blame] | 514 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 515 | /* |
| 516 | * Check for URG data |
| 517 | * This will soread as well, so no need to |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 518 | * test for G_IO_IN below if this succeeds |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 519 | */ |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 520 | if (revents & G_IO_PRI) { |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 521 | sorecvoob(so); |
| 522 | } |
| 523 | /* |
| 524 | * Check sockets for reading |
| 525 | */ |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 526 | else if (revents & (G_IO_IN | G_IO_HUP | G_IO_ERR)) { |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 527 | /* |
| 528 | * Check for incoming connections |
| 529 | */ |
| 530 | if (so->so_state & SS_FACCEPTCONN) { |
| 531 | tcp_connect(so); |
| 532 | continue; |
| 533 | } /* else */ |
| 534 | ret = soread(so); |
| 535 | |
| 536 | /* Output it if we read something */ |
| 537 | if (ret > 0) { |
| 538 | tcp_output(sototcpcb(so)); |
Jan Kiszka | e6d43cf | 2011-07-20 12:20:18 +0200 | [diff] [blame] | 539 | } |
| 540 | } |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 541 | |
| 542 | /* |
| 543 | * Check sockets for writing |
| 544 | */ |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 545 | if (!(so->so_state & SS_NOFDREF) && |
| 546 | (revents & (G_IO_OUT | G_IO_ERR))) { |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 547 | /* |
| 548 | * Check for non-blocking, still-connecting sockets |
| 549 | */ |
| 550 | if (so->so_state & SS_ISFCONNECTING) { |
| 551 | /* Connected */ |
| 552 | so->so_state &= ~SS_ISFCONNECTING; |
| 553 | |
| 554 | ret = send(so->s, (const void *) &ret, 0, 0); |
| 555 | if (ret < 0) { |
| 556 | /* XXXXX Must fix, zero bytes is a NOP */ |
| 557 | if (errno == EAGAIN || errno == EWOULDBLOCK || |
| 558 | errno == EINPROGRESS || errno == ENOTCONN) { |
| 559 | continue; |
| 560 | } |
| 561 | |
| 562 | /* else failed */ |
| 563 | so->so_state &= SS_PERSISTENT_MASK; |
| 564 | so->so_state |= SS_NOFDREF; |
| 565 | } |
| 566 | /* else so->so_state &= ~SS_ISFCONNECTING; */ |
| 567 | |
| 568 | /* |
| 569 | * Continue tcp_input |
| 570 | */ |
| 571 | tcp_input((struct mbuf *)NULL, sizeof(struct ip), so); |
| 572 | /* continue; */ |
| 573 | } else { |
| 574 | ret = sowrite(so); |
| 575 | } |
| 576 | /* |
| 577 | * XXXXX If we wrote something (a lot), there |
| 578 | * could be a need for a window update. |
| 579 | * In the worst case, the remote will send |
| 580 | * a window probe to get things going again |
| 581 | */ |
| 582 | } |
| 583 | |
| 584 | /* |
| 585 | * Probe a still-connecting, non-blocking socket |
| 586 | * to check if it's still alive |
| 587 | */ |
| 588 | #ifdef PROBE_CONN |
| 589 | if (so->so_state & SS_ISFCONNECTING) { |
| 590 | ret = qemu_recv(so->s, &ret, 0, 0); |
| 591 | |
| 592 | if (ret < 0) { |
| 593 | /* XXX */ |
| 594 | if (errno == EAGAIN || errno == EWOULDBLOCK || |
| 595 | errno == EINPROGRESS || errno == ENOTCONN) { |
| 596 | continue; /* Still connecting, continue */ |
| 597 | } |
| 598 | |
| 599 | /* else failed */ |
| 600 | so->so_state &= SS_PERSISTENT_MASK; |
| 601 | so->so_state |= SS_NOFDREF; |
| 602 | |
| 603 | /* tcp_input will take care of it */ |
| 604 | } else { |
| 605 | ret = send(so->s, &ret, 0, 0); |
| 606 | if (ret < 0) { |
| 607 | /* XXX */ |
| 608 | if (errno == EAGAIN || errno == EWOULDBLOCK || |
| 609 | errno == EINPROGRESS || errno == ENOTCONN) { |
| 610 | continue; |
| 611 | } |
| 612 | /* else failed */ |
| 613 | so->so_state &= SS_PERSISTENT_MASK; |
| 614 | so->so_state |= SS_NOFDREF; |
| 615 | } else { |
| 616 | so->so_state &= ~SS_ISFCONNECTING; |
| 617 | } |
| 618 | |
| 619 | } |
| 620 | tcp_input((struct mbuf *)NULL, sizeof(struct ip), so); |
| 621 | } /* SS_ISFCONNECTING */ |
| 622 | #endif |
| 623 | } |
| 624 | |
| 625 | /* |
| 626 | * Now UDP sockets. |
| 627 | * Incoming packets are sent straight away, they're not buffered. |
| 628 | * Incoming UDP data isn't buffered either. |
| 629 | */ |
| 630 | for (so = slirp->udb.so_next; so != &slirp->udb; |
| 631 | so = so_next) { |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 632 | int revents; |
| 633 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 634 | so_next = so->so_next; |
| 635 | |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 636 | revents = 0; |
| 637 | if (so->pollfds_idx != -1) { |
| 638 | revents = g_array_index(pollfds, GPollFD, |
| 639 | so->pollfds_idx).revents; |
| 640 | } |
| 641 | |
| 642 | if (so->s != -1 && |
| 643 | (revents & (G_IO_IN | G_IO_HUP | G_IO_ERR))) { |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 644 | sorecvfrom(so); |
| 645 | } |
| 646 | } |
| 647 | |
| 648 | /* |
| 649 | * Check incoming ICMP relies. |
| 650 | */ |
| 651 | for (so = slirp->icmp.so_next; so != &slirp->icmp; |
| 652 | so = so_next) { |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 653 | int revents; |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 654 | |
Stefan Hajnoczi | 8917c3b | 2013-02-20 11:28:28 +0100 | [diff] [blame] | 655 | so_next = so->so_next; |
| 656 | |
| 657 | revents = 0; |
| 658 | if (so->pollfds_idx != -1) { |
| 659 | revents = g_array_index(pollfds, GPollFD, |
| 660 | so->pollfds_idx).revents; |
| 661 | } |
| 662 | |
| 663 | if (so->s != -1 && |
| 664 | (revents & (G_IO_IN | G_IO_HUP | G_IO_ERR))) { |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 665 | icmp_receive(so); |
| 666 | } |
| 667 | } |
| 668 | } |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 669 | |
Jan Kiszka | f373431 | 2012-03-06 00:02:23 +0100 | [diff] [blame] | 670 | if_start(slirp); |
Jan Kiszka | b1c99fc | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 671 | } |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 672 | } |
| 673 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 674 | static void arp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 675 | { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 676 | struct arphdr *ah = (struct arphdr *)(pkt + ETH_HLEN); |
Hervé Poussineau | dbf3c4b | 2010-09-15 22:33:26 +0200 | [diff] [blame] | 677 | uint8_t arp_reply[max(ETH_HLEN + sizeof(struct arphdr), 64)]; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 678 | struct ethhdr *reh = (struct ethhdr *)arp_reply; |
| 679 | struct arphdr *rah = (struct arphdr *)(arp_reply + ETH_HLEN); |
| 680 | int ar_op; |
bellard | a3d4af0 | 2004-09-05 23:10:26 +0000 | [diff] [blame] | 681 | struct ex_list *ex_ptr; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 682 | |
| 683 | ar_op = ntohs(ah->ar_op); |
| 684 | switch(ar_op) { |
| 685 | case ARPOP_REQUEST: |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 686 | if (ah->ar_tip == ah->ar_sip) { |
| 687 | /* Gratuitous ARP */ |
| 688 | arp_table_add(slirp, ah->ar_sip, ah->ar_sha); |
| 689 | return; |
| 690 | } |
| 691 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 692 | if ((ah->ar_tip & slirp->vnetwork_mask.s_addr) == |
| 693 | slirp->vnetwork_addr.s_addr) { |
| 694 | if (ah->ar_tip == slirp->vnameserver_addr.s_addr || |
| 695 | ah->ar_tip == slirp->vhost_addr.s_addr) |
bellard | a3d4af0 | 2004-09-05 23:10:26 +0000 | [diff] [blame] | 696 | goto arp_ok; |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 697 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 698 | if (ex_ptr->ex_addr.s_addr == ah->ar_tip) |
bellard | a3d4af0 | 2004-09-05 23:10:26 +0000 | [diff] [blame] | 699 | goto arp_ok; |
| 700 | } |
| 701 | return; |
| 702 | arp_ok: |
Hervé Poussineau | dbf3c4b | 2010-09-15 22:33:26 +0200 | [diff] [blame] | 703 | memset(arp_reply, 0, sizeof(arp_reply)); |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 704 | |
| 705 | arp_table_add(slirp, ah->ar_sip, ah->ar_sha); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 706 | |
| 707 | /* ARP request for alias/dns mac address */ |
| 708 | memcpy(reh->h_dest, pkt + ETH_ALEN, ETH_ALEN); |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 709 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); |
| 710 | memcpy(&reh->h_source[2], &ah->ar_tip, 4); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 711 | reh->h_proto = htons(ETH_P_ARP); |
| 712 | |
| 713 | rah->ar_hrd = htons(1); |
| 714 | rah->ar_pro = htons(ETH_P_IP); |
| 715 | rah->ar_hln = ETH_ALEN; |
| 716 | rah->ar_pln = 4; |
| 717 | rah->ar_op = htons(ARPOP_REPLY); |
| 718 | memcpy(rah->ar_sha, reh->h_source, ETH_ALEN); |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 719 | rah->ar_sip = ah->ar_tip; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 720 | memcpy(rah->ar_tha, ah->ar_sha, ETH_ALEN); |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 721 | rah->ar_tip = ah->ar_sip; |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 722 | slirp_output(slirp->opaque, arp_reply, sizeof(arp_reply)); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 723 | } |
| 724 | break; |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 725 | case ARPOP_REPLY: |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 726 | arp_table_add(slirp, ah->ar_sip, ah->ar_sha); |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 727 | break; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 728 | default: |
| 729 | break; |
| 730 | } |
| 731 | } |
| 732 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 733 | void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 734 | { |
| 735 | struct mbuf *m; |
| 736 | int proto; |
| 737 | |
| 738 | if (pkt_len < ETH_HLEN) |
| 739 | return; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 740 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 741 | proto = ntohs(*(uint16_t *)(pkt + 12)); |
| 742 | switch(proto) { |
| 743 | case ETH_P_ARP: |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 744 | arp_input(slirp, pkt, pkt_len); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 745 | break; |
| 746 | case ETH_P_IP: |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 747 | m = m_get(slirp); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 748 | if (!m) |
| 749 | return; |
bellard | 38f3e7c | 2006-05-10 19:21:58 +0000 | [diff] [blame] | 750 | /* Note: we add to align the IP header */ |
aurel32 | e8e880a | 2008-12-07 18:15:23 +0000 | [diff] [blame] | 751 | if (M_FREEROOM(m) < pkt_len + 2) { |
| 752 | m_inc(m, pkt_len + 2); |
| 753 | } |
bellard | 38f3e7c | 2006-05-10 19:21:58 +0000 | [diff] [blame] | 754 | m->m_len = pkt_len + 2; |
| 755 | memcpy(m->m_data + 2, pkt, pkt_len); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 756 | |
bellard | 38f3e7c | 2006-05-10 19:21:58 +0000 | [diff] [blame] | 757 | m->m_data += 2 + ETH_HLEN; |
| 758 | m->m_len -= 2 + ETH_HLEN; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 759 | |
| 760 | ip_input(m); |
| 761 | break; |
| 762 | default: |
| 763 | break; |
| 764 | } |
| 765 | } |
| 766 | |
Fabien Chouteau | 1ab74ce | 2011-08-01 18:18:37 +0200 | [diff] [blame] | 767 | /* Output the IP packet to the ethernet device. Returns 0 if the packet must be |
| 768 | * re-queued. |
| 769 | */ |
| 770 | int if_encap(Slirp *slirp, struct mbuf *ifm) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 771 | { |
| 772 | uint8_t buf[1600]; |
| 773 | struct ethhdr *eh = (struct ethhdr *)buf; |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 774 | uint8_t ethaddr[ETH_ALEN]; |
Fabien Chouteau | 1ab74ce | 2011-08-01 18:18:37 +0200 | [diff] [blame] | 775 | const struct ip *iph = (const struct ip *)ifm->m_data; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 776 | |
Fabien Chouteau | 1ab74ce | 2011-08-01 18:18:37 +0200 | [diff] [blame] | 777 | if (ifm->m_len + ETH_HLEN > sizeof(buf)) { |
| 778 | return 1; |
| 779 | } |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 780 | |
| 781 | if (!arp_table_search(slirp, iph->ip_dst.s_addr, ethaddr)) { |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 782 | uint8_t arp_req[ETH_HLEN + sizeof(struct arphdr)]; |
| 783 | struct ethhdr *reh = (struct ethhdr *)arp_req; |
| 784 | struct arphdr *rah = (struct arphdr *)(arp_req + ETH_HLEN); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 785 | |
Fabien Chouteau | 1ab74ce | 2011-08-01 18:18:37 +0200 | [diff] [blame] | 786 | if (!ifm->arp_requested) { |
| 787 | /* If the client addr is not known, send an ARP request */ |
| 788 | memset(reh->h_dest, 0xff, ETH_ALEN); |
| 789 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); |
| 790 | memcpy(&reh->h_source[2], &slirp->vhost_addr, 4); |
| 791 | reh->h_proto = htons(ETH_P_ARP); |
| 792 | rah->ar_hrd = htons(1); |
| 793 | rah->ar_pro = htons(ETH_P_IP); |
| 794 | rah->ar_hln = ETH_ALEN; |
| 795 | rah->ar_pln = 4; |
| 796 | rah->ar_op = htons(ARPOP_REQUEST); |
| 797 | |
| 798 | /* source hw addr */ |
| 799 | memcpy(rah->ar_sha, special_ethaddr, ETH_ALEN - 4); |
| 800 | memcpy(&rah->ar_sha[2], &slirp->vhost_addr, 4); |
| 801 | |
| 802 | /* source IP */ |
| 803 | rah->ar_sip = slirp->vhost_addr.s_addr; |
| 804 | |
| 805 | /* target hw addr (none) */ |
| 806 | memset(rah->ar_tha, 0, ETH_ALEN); |
| 807 | |
| 808 | /* target IP */ |
| 809 | rah->ar_tip = iph->ip_dst.s_addr; |
| 810 | slirp->client_ipaddr = iph->ip_dst; |
| 811 | slirp_output(slirp->opaque, arp_req, sizeof(arp_req)); |
| 812 | ifm->arp_requested = true; |
Jan Kiszka | e3a110b | 2011-08-05 14:05:53 +0200 | [diff] [blame] | 813 | |
| 814 | /* Expire request and drop outgoing packet after 1 second */ |
Alex Bligh | bc72ad6 | 2013-08-21 16:03:08 +0100 | [diff] [blame] | 815 | ifm->expiration_date = qemu_clock_get_ns(QEMU_CLOCK_REALTIME) + 1000000000ULL; |
Fabien Chouteau | 1ab74ce | 2011-08-01 18:18:37 +0200 | [diff] [blame] | 816 | } |
| 817 | return 0; |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 818 | } else { |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 819 | memcpy(eh->h_dest, ethaddr, ETH_ALEN); |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 820 | memcpy(eh->h_source, special_ethaddr, ETH_ALEN - 4); |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 821 | /* XXX: not correct */ |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 822 | memcpy(&eh->h_source[2], &slirp->vhost_addr, 4); |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 823 | eh->h_proto = htons(ETH_P_IP); |
Fabien Chouteau | 1ab74ce | 2011-08-01 18:18:37 +0200 | [diff] [blame] | 824 | memcpy(buf + sizeof(struct ethhdr), ifm->m_data, ifm->m_len); |
| 825 | slirp_output(slirp->opaque, buf, ifm->m_len + ETH_HLEN); |
| 826 | return 1; |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 827 | } |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 828 | } |
bellard | 9bf0544 | 2004-08-25 22:12:49 +0000 | [diff] [blame] | 829 | |
Jan Kiszka | 9c12a6f | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 830 | /* Drop host forwarding rule, return 0 if found. */ |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 831 | int slirp_remove_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
| 832 | int host_port) |
Alexander Graf | c1261d8 | 2009-05-26 13:03:26 +0200 | [diff] [blame] | 833 | { |
| 834 | struct socket *so; |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 835 | struct socket *head = (is_udp ? &slirp->udb : &slirp->tcb); |
Jan Kiszka | 2ad82cf | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 836 | struct sockaddr_in addr; |
| 837 | int port = htons(host_port); |
| 838 | socklen_t addr_len; |
Alexander Graf | c1261d8 | 2009-05-26 13:03:26 +0200 | [diff] [blame] | 839 | |
Alexander Graf | c1261d8 | 2009-05-26 13:03:26 +0200 | [diff] [blame] | 840 | for (so = head->so_next; so != head; so = so->so_next) { |
Jan Kiszka | 2ad82cf | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 841 | addr_len = sizeof(addr); |
Jan Kiszka | 9c12a6f | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 842 | if ((so->so_state & SS_HOSTFWD) && |
| 843 | getsockname(so->s, (struct sockaddr *)&addr, &addr_len) == 0 && |
Jan Kiszka | 3c6a058 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 844 | addr.sin_addr.s_addr == host_addr.s_addr && |
Jan Kiszka | 2ad82cf | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 845 | addr.sin_port == port) { |
Alexander Graf | c1261d8 | 2009-05-26 13:03:26 +0200 | [diff] [blame] | 846 | close(so->s); |
| 847 | sofree(so); |
Jan Kiszka | 9c12a6f | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 848 | return 0; |
Alexander Graf | c1261d8 | 2009-05-26 13:03:26 +0200 | [diff] [blame] | 849 | } |
| 850 | } |
| 851 | |
Jan Kiszka | 9c12a6f | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 852 | return -1; |
Alexander Graf | c1261d8 | 2009-05-26 13:03:26 +0200 | [diff] [blame] | 853 | } |
| 854 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 855 | int slirp_add_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
| 856 | int host_port, struct in_addr guest_addr, int guest_port) |
bellard | 9bf0544 | 2004-08-25 22:12:49 +0000 | [diff] [blame] | 857 | { |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 858 | if (!guest_addr.s_addr) { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 859 | guest_addr = slirp->vdhcp_startaddr; |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 860 | } |
bellard | 9bf0544 | 2004-08-25 22:12:49 +0000 | [diff] [blame] | 861 | if (is_udp) { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 862 | if (!udp_listen(slirp, host_addr.s_addr, htons(host_port), |
| 863 | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) |
bellard | 9bf0544 | 2004-08-25 22:12:49 +0000 | [diff] [blame] | 864 | return -1; |
| 865 | } else { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 866 | if (!tcp_listen(slirp, host_addr.s_addr, htons(host_port), |
| 867 | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) |
bellard | 9bf0544 | 2004-08-25 22:12:49 +0000 | [diff] [blame] | 868 | return -1; |
| 869 | } |
| 870 | return 0; |
| 871 | } |
bellard | a3d4af0 | 2004-09-05 23:10:26 +0000 | [diff] [blame] | 872 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 873 | int slirp_add_exec(Slirp *slirp, int do_pty, const void *args, |
Jan Kiszka | bb53fc5 | 2009-07-22 17:03:52 +0200 | [diff] [blame] | 874 | struct in_addr *guest_addr, int guest_port) |
bellard | a3d4af0 | 2004-09-05 23:10:26 +0000 | [diff] [blame] | 875 | { |
Jan Kiszka | bb53fc5 | 2009-07-22 17:03:52 +0200 | [diff] [blame] | 876 | if (!guest_addr->s_addr) { |
| 877 | guest_addr->s_addr = slirp->vnetwork_addr.s_addr | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 878 | (htonl(0x0204) & ~slirp->vnetwork_mask.s_addr); |
Jan Kiszka | c92ef6a | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 879 | } |
Jan Kiszka | bb53fc5 | 2009-07-22 17:03:52 +0200 | [diff] [blame] | 880 | if ((guest_addr->s_addr & slirp->vnetwork_mask.s_addr) != |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 881 | slirp->vnetwork_addr.s_addr || |
Jan Kiszka | bb53fc5 | 2009-07-22 17:03:52 +0200 | [diff] [blame] | 882 | guest_addr->s_addr == slirp->vhost_addr.s_addr || |
| 883 | guest_addr->s_addr == slirp->vnameserver_addr.s_addr) { |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 884 | return -1; |
| 885 | } |
Jan Kiszka | bb53fc5 | 2009-07-22 17:03:52 +0200 | [diff] [blame] | 886 | return add_exec(&slirp->exec_list, do_pty, (char *)args, *guest_addr, |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 887 | htons(guest_port)); |
bellard | a3d4af0 | 2004-09-05 23:10:26 +0000 | [diff] [blame] | 888 | } |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 889 | |
| 890 | ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags) |
| 891 | { |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 892 | if (so->s == -1 && so->extra) { |
| 893 | qemu_chr_fe_write(so->extra, buf, len); |
| 894 | return len; |
| 895 | } |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 896 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 897 | return send(so->s, buf, len, flags); |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 898 | } |
| 899 | |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 900 | static struct socket * |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 901 | slirp_find_ctl_socket(Slirp *slirp, struct in_addr guest_addr, int guest_port) |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 902 | { |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 903 | struct socket *so; |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 904 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 905 | for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) { |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 906 | if (so->so_faddr.s_addr == guest_addr.s_addr && |
| 907 | htons(so->so_fport) == guest_port) { |
| 908 | return so; |
| 909 | } |
| 910 | } |
| 911 | return NULL; |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 912 | } |
| 913 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 914 | size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr, |
| 915 | int guest_port) |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 916 | { |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 917 | struct iovec iov[2]; |
| 918 | struct socket *so; |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 919 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 920 | so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 921 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 922 | if (!so || so->so_state & SS_NOFDREF) { |
| 923 | return 0; |
| 924 | } |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 925 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 926 | if (!CONN_CANFRCV(so) || so->so_snd.sb_cc >= (so->so_snd.sb_datalen/2)) { |
| 927 | return 0; |
| 928 | } |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 929 | |
Stefan Hajnoczi | cf1d078 | 2013-02-20 11:28:27 +0100 | [diff] [blame] | 930 | return sopreprbuf(so, iov, NULL); |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 931 | } |
| 932 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 933 | void slirp_socket_recv(Slirp *slirp, struct in_addr guest_addr, int guest_port, |
Jan Kiszka | c92ef6a | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 934 | const uint8_t *buf, int size) |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 935 | { |
| 936 | int ret; |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 937 | struct socket *so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 938 | |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 939 | if (!so) |
| 940 | return; |
| 941 | |
blueswir1 | 0580ac9 | 2009-01-12 17:51:06 +0000 | [diff] [blame] | 942 | ret = soreadbuf(so, (const char *)buf, size); |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 943 | |
| 944 | if (ret > 0) |
| 945 | tcp_output(sototcpcb(so)); |
| 946 | } |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 947 | |
| 948 | static void slirp_tcp_save(QEMUFile *f, struct tcpcb *tp) |
| 949 | { |
| 950 | int i; |
| 951 | |
| 952 | qemu_put_sbe16(f, tp->t_state); |
| 953 | for (i = 0; i < TCPT_NTIMERS; i++) |
| 954 | qemu_put_sbe16(f, tp->t_timer[i]); |
| 955 | qemu_put_sbe16(f, tp->t_rxtshift); |
| 956 | qemu_put_sbe16(f, tp->t_rxtcur); |
| 957 | qemu_put_sbe16(f, tp->t_dupacks); |
| 958 | qemu_put_be16(f, tp->t_maxseg); |
| 959 | qemu_put_sbyte(f, tp->t_force); |
| 960 | qemu_put_be16(f, tp->t_flags); |
| 961 | qemu_put_be32(f, tp->snd_una); |
| 962 | qemu_put_be32(f, tp->snd_nxt); |
| 963 | qemu_put_be32(f, tp->snd_up); |
| 964 | qemu_put_be32(f, tp->snd_wl1); |
| 965 | qemu_put_be32(f, tp->snd_wl2); |
| 966 | qemu_put_be32(f, tp->iss); |
| 967 | qemu_put_be32(f, tp->snd_wnd); |
| 968 | qemu_put_be32(f, tp->rcv_wnd); |
| 969 | qemu_put_be32(f, tp->rcv_nxt); |
| 970 | qemu_put_be32(f, tp->rcv_up); |
| 971 | qemu_put_be32(f, tp->irs); |
| 972 | qemu_put_be32(f, tp->rcv_adv); |
| 973 | qemu_put_be32(f, tp->snd_max); |
| 974 | qemu_put_be32(f, tp->snd_cwnd); |
| 975 | qemu_put_be32(f, tp->snd_ssthresh); |
| 976 | qemu_put_sbe16(f, tp->t_idle); |
| 977 | qemu_put_sbe16(f, tp->t_rtt); |
| 978 | qemu_put_be32(f, tp->t_rtseq); |
| 979 | qemu_put_sbe16(f, tp->t_srtt); |
| 980 | qemu_put_sbe16(f, tp->t_rttvar); |
| 981 | qemu_put_be16(f, tp->t_rttmin); |
| 982 | qemu_put_be32(f, tp->max_sndwnd); |
| 983 | qemu_put_byte(f, tp->t_oobflags); |
| 984 | qemu_put_byte(f, tp->t_iobc); |
| 985 | qemu_put_sbe16(f, tp->t_softerror); |
| 986 | qemu_put_byte(f, tp->snd_scale); |
| 987 | qemu_put_byte(f, tp->rcv_scale); |
| 988 | qemu_put_byte(f, tp->request_r_scale); |
| 989 | qemu_put_byte(f, tp->requested_s_scale); |
| 990 | qemu_put_be32(f, tp->ts_recent); |
| 991 | qemu_put_be32(f, tp->ts_recent_age); |
| 992 | qemu_put_be32(f, tp->last_ack_sent); |
| 993 | } |
| 994 | |
| 995 | static void slirp_sbuf_save(QEMUFile *f, struct sbuf *sbuf) |
| 996 | { |
| 997 | uint32_t off; |
| 998 | |
| 999 | qemu_put_be32(f, sbuf->sb_cc); |
| 1000 | qemu_put_be32(f, sbuf->sb_datalen); |
| 1001 | off = (uint32_t)(sbuf->sb_wptr - sbuf->sb_data); |
| 1002 | qemu_put_sbe32(f, off); |
| 1003 | off = (uint32_t)(sbuf->sb_rptr - sbuf->sb_data); |
| 1004 | qemu_put_sbe32(f, off); |
| 1005 | qemu_put_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); |
| 1006 | } |
| 1007 | |
| 1008 | static void slirp_socket_save(QEMUFile *f, struct socket *so) |
| 1009 | { |
| 1010 | qemu_put_be32(f, so->so_urgc); |
| 1011 | qemu_put_be32(f, so->so_faddr.s_addr); |
| 1012 | qemu_put_be32(f, so->so_laddr.s_addr); |
| 1013 | qemu_put_be16(f, so->so_fport); |
| 1014 | qemu_put_be16(f, so->so_lport); |
| 1015 | qemu_put_byte(f, so->so_iptos); |
| 1016 | qemu_put_byte(f, so->so_emu); |
| 1017 | qemu_put_byte(f, so->so_type); |
| 1018 | qemu_put_be32(f, so->so_state); |
| 1019 | slirp_sbuf_save(f, &so->so_rcv); |
| 1020 | slirp_sbuf_save(f, &so->so_snd); |
| 1021 | slirp_tcp_save(f, so->so_tcpcb); |
| 1022 | } |
| 1023 | |
Jan Kiszka | 0a1f851 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1024 | static void slirp_bootp_save(QEMUFile *f, Slirp *slirp) |
| 1025 | { |
| 1026 | int i; |
| 1027 | |
| 1028 | for (i = 0; i < NB_BOOTP_CLIENTS; i++) { |
| 1029 | qemu_put_be16(f, slirp->bootp_clients[i].allocated); |
| 1030 | qemu_put_buffer(f, slirp->bootp_clients[i].macaddr, 6); |
| 1031 | } |
| 1032 | } |
| 1033 | |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1034 | static void slirp_state_save(QEMUFile *f, void *opaque) |
| 1035 | { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1036 | Slirp *slirp = opaque; |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1037 | struct ex_list *ex_ptr; |
| 1038 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1039 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1040 | if (ex_ptr->ex_pty == 3) { |
| 1041 | struct socket *so; |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1042 | so = slirp_find_ctl_socket(slirp, ex_ptr->ex_addr, |
| 1043 | ntohs(ex_ptr->ex_fport)); |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1044 | if (!so) |
| 1045 | continue; |
| 1046 | |
| 1047 | qemu_put_byte(f, 42); |
| 1048 | slirp_socket_save(f, so); |
| 1049 | } |
| 1050 | qemu_put_byte(f, 0); |
Jan Kiszka | 285f7a6 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 1051 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1052 | qemu_put_be16(f, slirp->ip_id); |
Jan Kiszka | 0a1f851 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1053 | |
| 1054 | slirp_bootp_save(f, slirp); |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1055 | } |
| 1056 | |
| 1057 | static void slirp_tcp_load(QEMUFile *f, struct tcpcb *tp) |
| 1058 | { |
| 1059 | int i; |
| 1060 | |
| 1061 | tp->t_state = qemu_get_sbe16(f); |
| 1062 | for (i = 0; i < TCPT_NTIMERS; i++) |
| 1063 | tp->t_timer[i] = qemu_get_sbe16(f); |
| 1064 | tp->t_rxtshift = qemu_get_sbe16(f); |
| 1065 | tp->t_rxtcur = qemu_get_sbe16(f); |
| 1066 | tp->t_dupacks = qemu_get_sbe16(f); |
| 1067 | tp->t_maxseg = qemu_get_be16(f); |
| 1068 | tp->t_force = qemu_get_sbyte(f); |
| 1069 | tp->t_flags = qemu_get_be16(f); |
| 1070 | tp->snd_una = qemu_get_be32(f); |
| 1071 | tp->snd_nxt = qemu_get_be32(f); |
| 1072 | tp->snd_up = qemu_get_be32(f); |
| 1073 | tp->snd_wl1 = qemu_get_be32(f); |
| 1074 | tp->snd_wl2 = qemu_get_be32(f); |
| 1075 | tp->iss = qemu_get_be32(f); |
| 1076 | tp->snd_wnd = qemu_get_be32(f); |
| 1077 | tp->rcv_wnd = qemu_get_be32(f); |
| 1078 | tp->rcv_nxt = qemu_get_be32(f); |
| 1079 | tp->rcv_up = qemu_get_be32(f); |
| 1080 | tp->irs = qemu_get_be32(f); |
| 1081 | tp->rcv_adv = qemu_get_be32(f); |
| 1082 | tp->snd_max = qemu_get_be32(f); |
| 1083 | tp->snd_cwnd = qemu_get_be32(f); |
| 1084 | tp->snd_ssthresh = qemu_get_be32(f); |
| 1085 | tp->t_idle = qemu_get_sbe16(f); |
| 1086 | tp->t_rtt = qemu_get_sbe16(f); |
| 1087 | tp->t_rtseq = qemu_get_be32(f); |
| 1088 | tp->t_srtt = qemu_get_sbe16(f); |
| 1089 | tp->t_rttvar = qemu_get_sbe16(f); |
| 1090 | tp->t_rttmin = qemu_get_be16(f); |
| 1091 | tp->max_sndwnd = qemu_get_be32(f); |
| 1092 | tp->t_oobflags = qemu_get_byte(f); |
| 1093 | tp->t_iobc = qemu_get_byte(f); |
| 1094 | tp->t_softerror = qemu_get_sbe16(f); |
| 1095 | tp->snd_scale = qemu_get_byte(f); |
| 1096 | tp->rcv_scale = qemu_get_byte(f); |
| 1097 | tp->request_r_scale = qemu_get_byte(f); |
| 1098 | tp->requested_s_scale = qemu_get_byte(f); |
| 1099 | tp->ts_recent = qemu_get_be32(f); |
| 1100 | tp->ts_recent_age = qemu_get_be32(f); |
| 1101 | tp->last_ack_sent = qemu_get_be32(f); |
| 1102 | tcp_template(tp); |
| 1103 | } |
| 1104 | |
| 1105 | static int slirp_sbuf_load(QEMUFile *f, struct sbuf *sbuf) |
| 1106 | { |
| 1107 | uint32_t off, sb_cc, sb_datalen; |
| 1108 | |
| 1109 | sb_cc = qemu_get_be32(f); |
| 1110 | sb_datalen = qemu_get_be32(f); |
| 1111 | |
| 1112 | sbreserve(sbuf, sb_datalen); |
| 1113 | |
| 1114 | if (sbuf->sb_datalen != sb_datalen) |
| 1115 | return -ENOMEM; |
| 1116 | |
| 1117 | sbuf->sb_cc = sb_cc; |
| 1118 | |
| 1119 | off = qemu_get_sbe32(f); |
| 1120 | sbuf->sb_wptr = sbuf->sb_data + off; |
| 1121 | off = qemu_get_sbe32(f); |
| 1122 | sbuf->sb_rptr = sbuf->sb_data + off; |
| 1123 | qemu_get_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); |
| 1124 | |
| 1125 | return 0; |
| 1126 | } |
| 1127 | |
| 1128 | static int slirp_socket_load(QEMUFile *f, struct socket *so) |
| 1129 | { |
| 1130 | if (tcp_attach(so) < 0) |
| 1131 | return -ENOMEM; |
| 1132 | |
| 1133 | so->so_urgc = qemu_get_be32(f); |
| 1134 | so->so_faddr.s_addr = qemu_get_be32(f); |
| 1135 | so->so_laddr.s_addr = qemu_get_be32(f); |
| 1136 | so->so_fport = qemu_get_be16(f); |
| 1137 | so->so_lport = qemu_get_be16(f); |
| 1138 | so->so_iptos = qemu_get_byte(f); |
| 1139 | so->so_emu = qemu_get_byte(f); |
| 1140 | so->so_type = qemu_get_byte(f); |
| 1141 | so->so_state = qemu_get_be32(f); |
| 1142 | if (slirp_sbuf_load(f, &so->so_rcv) < 0) |
| 1143 | return -ENOMEM; |
| 1144 | if (slirp_sbuf_load(f, &so->so_snd) < 0) |
| 1145 | return -ENOMEM; |
| 1146 | slirp_tcp_load(f, so->so_tcpcb); |
| 1147 | |
| 1148 | return 0; |
| 1149 | } |
| 1150 | |
Jan Kiszka | 0a1f851 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1151 | static void slirp_bootp_load(QEMUFile *f, Slirp *slirp) |
| 1152 | { |
| 1153 | int i; |
| 1154 | |
| 1155 | for (i = 0; i < NB_BOOTP_CLIENTS; i++) { |
| 1156 | slirp->bootp_clients[i].allocated = qemu_get_be16(f); |
| 1157 | qemu_get_buffer(f, slirp->bootp_clients[i].macaddr, 6); |
| 1158 | } |
| 1159 | } |
| 1160 | |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1161 | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id) |
| 1162 | { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1163 | Slirp *slirp = opaque; |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1164 | struct ex_list *ex_ptr; |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1165 | |
Blue Swirl | b0e0486 | 2010-03-07 13:45:38 +0000 | [diff] [blame] | 1166 | while (qemu_get_byte(f)) { |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1167 | int ret; |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1168 | struct socket *so = socreate(slirp); |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1169 | |
| 1170 | if (!so) |
| 1171 | return -ENOMEM; |
| 1172 | |
| 1173 | ret = slirp_socket_load(f, so); |
| 1174 | |
| 1175 | if (ret < 0) |
| 1176 | return ret; |
| 1177 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1178 | if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) != |
| 1179 | slirp->vnetwork_addr.s_addr) { |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1180 | return -EINVAL; |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 1181 | } |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1182 | for (ex_ptr = slirp->exec_list; ex_ptr; ex_ptr = ex_ptr->ex_next) { |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1183 | if (ex_ptr->ex_pty == 3 && |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 1184 | so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr && |
| 1185 | so->so_fport == ex_ptr->ex_fport) { |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1186 | break; |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 1187 | } |
| 1188 | } |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1189 | if (!ex_ptr) |
| 1190 | return -EINVAL; |
| 1191 | |
blueswir1 | 0580ac9 | 2009-01-12 17:51:06 +0000 | [diff] [blame] | 1192 | so->extra = (void *)ex_ptr->ex_exec; |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1193 | } |
| 1194 | |
Jan Kiszka | 285f7a6 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 1195 | if (version_id >= 2) { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1196 | slirp->ip_id = qemu_get_be16(f); |
Jan Kiszka | 285f7a6 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 1197 | } |
| 1198 | |
Jan Kiszka | 0a1f851 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1199 | if (version_id >= 3) { |
| 1200 | slirp_bootp_load(f, slirp); |
| 1201 | } |
| 1202 | |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1203 | return 0; |
| 1204 | } |