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" |
Ed Swierk | aaf10d9 | 2009-07-23 14:13:34 -0700 | [diff] [blame] | 25 | #include "qemu-timer.h" |
blueswir1 | 0580ac9 | 2009-01-12 17:51:06 +0000 | [diff] [blame] | 26 | #include "qemu-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 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 42 | /* XXX: suppress those select globals */ |
| 43 | fd_set *global_readfds, *global_writefds, *global_xfds; |
| 44 | |
Jan Kiszka | f1d99bb | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 45 | u_int curtime; |
| 46 | static u_int time_fasttimo, last_slowtimo; |
| 47 | static int do_slowtimo; |
| 48 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 49 | static QTAILQ_HEAD(slirp_instances, Slirp) slirp_instances = |
| 50 | QTAILQ_HEAD_INITIALIZER(slirp_instances); |
pbrook | 115defd | 2006-04-16 11:06:58 +0000 | [diff] [blame] | 51 | |
Stefan Weil | 9e3a95e | 2009-08-31 16:29:34 +0200 | [diff] [blame] | 52 | static struct in_addr dns_addr; |
| 53 | static u_int dns_addr_time; |
Ed Swierk | df7a86e | 2009-08-20 19:00:31 -0700 | [diff] [blame] | 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 | |
Ed Swierk | df7a86e | 2009-08-20 19:00:31 -0700 | [diff] [blame] | 65 | if (dns_addr.s_addr != 0 && (curtime - dns_addr_time) < 1000) { |
| 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; |
| 121 | if ((curtime - dns_addr_time) < 1000) { |
| 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, |
| 206 | struct in_addr vnameserver, void *opaque) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 207 | { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 208 | Slirp *slirp = g_malloc0(sizeof(Slirp)); |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 209 | |
Jan Kiszka | df46189 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 210 | slirp_init_once(); |
bellard | 379ff53 | 2004-07-12 22:33:07 +0000 | [diff] [blame] | 211 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 212 | slirp->restricted = restricted; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 213 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 214 | if_init(slirp); |
| 215 | ip_init(slirp); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 216 | |
| 217 | /* Initialise mbufs *after* setting the MTU */ |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 218 | m_init(slirp); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 219 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 220 | slirp->vnetwork_addr = vnetwork; |
| 221 | slirp->vnetwork_mask = vnetmask; |
| 222 | slirp->vhost_addr = vhost; |
Jan Kiszka | c92ef6a | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 223 | if (vhostname) { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 224 | pstrcpy(slirp->client_hostname, sizeof(slirp->client_hostname), |
| 225 | vhostname); |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 226 | } |
Jan Kiszka | ad196a9 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 227 | if (tftp_path) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 228 | slirp->tftp_prefix = g_strdup(tftp_path); |
Jan Kiszka | ad196a9 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 229 | } |
Jan Kiszka | ad196a9 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 230 | if (bootfile) { |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 231 | slirp->bootp_filename = g_strdup(bootfile); |
Jan Kiszka | ad196a9 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 232 | } |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 233 | slirp->vdhcp_startaddr = vdhcp_start; |
| 234 | slirp->vnameserver_addr = vnameserver; |
Jan Kiszka | ad196a9 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 235 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 236 | slirp->opaque = opaque; |
| 237 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 238 | register_savevm(NULL, "slirp", 0, 3, |
| 239 | slirp_state_save, slirp_state_load, slirp); |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 240 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 241 | QTAILQ_INSERT_TAIL(&slirp_instances, slirp, entry); |
Jan Kiszka | ad0d8c4 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 242 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 243 | return slirp; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 244 | } |
| 245 | |
Jan Kiszka | ad0d8c4 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 246 | void slirp_cleanup(Slirp *slirp) |
| 247 | { |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 248 | QTAILQ_REMOVE(&slirp_instances, slirp, entry); |
Jan Kiszka | b1c99fc | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 249 | |
Alex Williamson | 0be71e3 | 2010-06-25 11:09:07 -0600 | [diff] [blame] | 250 | unregister_savevm(NULL, "slirp", slirp); |
Jan Kiszka | ad0d8c4 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 251 | |
Jan Kiszka | a68adc2 | 2012-02-29 19:14:23 +0100 | [diff] [blame] | 252 | ip_cleanup(slirp); |
| 253 | m_cleanup(slirp); |
| 254 | |
Anthony Liguori | 7267c09 | 2011-08-20 22:09:37 -0500 | [diff] [blame] | 255 | g_free(slirp->tftp_prefix); |
| 256 | g_free(slirp->bootp_filename); |
| 257 | g_free(slirp); |
Jan Kiszka | ad0d8c4 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 258 | } |
| 259 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 260 | #define CONN_CANFSEND(so) (((so)->so_state & (SS_FCANTSENDMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) |
| 261 | #define CONN_CANFRCV(so) (((so)->so_state & (SS_FCANTRCVMORE|SS_ISFCONNECTED)) == SS_ISFCONNECTED) |
| 262 | #define UPD_NFDS(x) if (nfds < (x)) nfds = (x) |
| 263 | |
Stefano Stabellini | 7c7db75 | 2012-04-13 19:35:04 +0100 | [diff] [blame] | 264 | void slirp_update_timeout(uint32_t *timeout) |
| 265 | { |
| 266 | if (!QTAILQ_EMPTY(&slirp_instances)) { |
| 267 | *timeout = MIN(1000, *timeout); |
| 268 | } |
| 269 | } |
| 270 | |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 271 | void slirp_select_fill(int *pnfds, |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 272 | fd_set *readfds, fd_set *writefds, fd_set *xfds) |
| 273 | { |
Jan Kiszka | b1c99fc | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 274 | Slirp *slirp; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 275 | struct socket *so, *so_next; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 276 | int nfds; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 277 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 278 | if (QTAILQ_EMPTY(&slirp_instances)) { |
Jan Kiszka | d918f23 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 279 | return; |
| 280 | } |
| 281 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 282 | /* fail safe */ |
| 283 | global_readfds = NULL; |
| 284 | global_writefds = NULL; |
| 285 | global_xfds = NULL; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 286 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 287 | nfds = *pnfds; |
| 288 | /* |
| 289 | * First, TCP sockets |
| 290 | */ |
| 291 | do_slowtimo = 0; |
Jan Kiszka | d918f23 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 292 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 293 | QTAILQ_FOREACH(slirp, &slirp_instances, entry) { |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 294 | /* |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 295 | * *_slowtimo needs calling if there are IP fragments |
| 296 | * in the fragment queue, or there are TCP connections active |
| 297 | */ |
Jan Kiszka | b1c99fc | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 298 | do_slowtimo |= ((slirp->tcb.so_next != &slirp->tcb) || |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 299 | (&slirp->ipq.ip_link != slirp->ipq.ip_link.next)); |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 300 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 301 | for (so = slirp->tcb.so_next; so != &slirp->tcb; |
| 302 | so = so_next) { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 303 | so_next = so->so_next; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 304 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 305 | /* |
| 306 | * See if we need a tcp_fasttimo |
| 307 | */ |
| 308 | if (time_fasttimo == 0 && so->so_tcpcb->t_flags & TF_DELACK) |
| 309 | time_fasttimo = curtime; /* Flag when we want a fasttimo */ |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 310 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 311 | /* |
| 312 | * NOFDREF can include still connecting to local-host, |
| 313 | * newly socreated() sockets etc. Don't want to select these. |
| 314 | */ |
| 315 | if (so->so_state & SS_NOFDREF || so->s == -1) |
| 316 | continue; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 317 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 318 | /* |
| 319 | * Set for reading sockets which are accepting |
| 320 | */ |
| 321 | if (so->so_state & SS_FACCEPTCONN) { |
| 322 | FD_SET(so->s, readfds); |
| 323 | UPD_NFDS(so->s); |
| 324 | continue; |
| 325 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 326 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 327 | /* |
| 328 | * Set for writing sockets which are connecting |
| 329 | */ |
| 330 | if (so->so_state & SS_ISFCONNECTING) { |
| 331 | FD_SET(so->s, writefds); |
| 332 | UPD_NFDS(so->s); |
| 333 | continue; |
| 334 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 335 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 336 | /* |
| 337 | * Set for writing if we are connected, can send more, and |
| 338 | * we have something to send |
| 339 | */ |
| 340 | if (CONN_CANFSEND(so) && so->so_rcv.sb_cc) { |
| 341 | FD_SET(so->s, writefds); |
| 342 | UPD_NFDS(so->s); |
| 343 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 344 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 345 | /* |
| 346 | * Set for reading (and urgent data) if we are connected, can |
| 347 | * receive more, and we have room for it XXX /2 ? |
| 348 | */ |
| 349 | if (CONN_CANFRCV(so) && (so->so_snd.sb_cc < (so->so_snd.sb_datalen/2))) { |
| 350 | FD_SET(so->s, readfds); |
| 351 | FD_SET(so->s, xfds); |
| 352 | UPD_NFDS(so->s); |
| 353 | } |
| 354 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 355 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 356 | /* |
| 357 | * UDP sockets |
| 358 | */ |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 359 | for (so = slirp->udb.so_next; so != &slirp->udb; |
| 360 | so = so_next) { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 361 | so_next = so->so_next; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 362 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 363 | /* |
| 364 | * See if it's timed out |
| 365 | */ |
| 366 | if (so->so_expire) { |
| 367 | if (so->so_expire <= curtime) { |
| 368 | udp_detach(so); |
| 369 | continue; |
| 370 | } else |
| 371 | do_slowtimo = 1; /* Let socket expire */ |
| 372 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 373 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 374 | /* |
| 375 | * When UDP packets are received from over the |
| 376 | * link, they're sendto()'d straight away, so |
| 377 | * no need for setting for writing |
| 378 | * Limit the number of packets queued by this session |
| 379 | * to 4. Note that even though we try and limit this |
| 380 | * to 4 packets, the session could have more queued |
| 381 | * if the packets needed to be fragmented |
| 382 | * (XXX <= 4 ?) |
| 383 | */ |
| 384 | if ((so->so_state & SS_ISFCONNECTED) && so->so_queued <= 4) { |
| 385 | FD_SET(so->s, readfds); |
| 386 | UPD_NFDS(so->s); |
| 387 | } |
| 388 | } |
Jan Kiszka | e6d43cf | 2011-07-20 12:20:18 +0200 | [diff] [blame] | 389 | |
| 390 | /* |
| 391 | * ICMP sockets |
| 392 | */ |
| 393 | for (so = slirp->icmp.so_next; so != &slirp->icmp; |
| 394 | so = so_next) { |
| 395 | so_next = so->so_next; |
| 396 | |
| 397 | /* |
| 398 | * See if it's timed out |
| 399 | */ |
| 400 | if (so->so_expire) { |
| 401 | if (so->so_expire <= curtime) { |
| 402 | icmp_detach(so); |
| 403 | continue; |
| 404 | } else { |
| 405 | do_slowtimo = 1; /* Let socket expire */ |
| 406 | } |
| 407 | } |
| 408 | |
| 409 | if (so->so_state & SS_ISFCONNECTED) { |
| 410 | FD_SET(so->s, readfds); |
| 411 | UPD_NFDS(so->s); |
| 412 | } |
| 413 | } |
Jan Kiszka | b1c99fc | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 414 | } |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 415 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 416 | *pnfds = nfds; |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 417 | } |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 418 | |
Jan Kiszka | d918f23 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 419 | void slirp_select_poll(fd_set *readfds, fd_set *writefds, fd_set *xfds, |
| 420 | int select_error) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 421 | { |
Jan Kiszka | b1c99fc | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 422 | Slirp *slirp; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 423 | struct socket *so, *so_next; |
| 424 | int ret; |
| 425 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 426 | if (QTAILQ_EMPTY(&slirp_instances)) { |
Jan Kiszka | d918f23 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 427 | return; |
| 428 | } |
| 429 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 430 | global_readfds = readfds; |
| 431 | global_writefds = writefds; |
| 432 | global_xfds = xfds; |
| 433 | |
Paolo Bonzini | 7bd427d | 2011-03-11 16:47:48 +0100 | [diff] [blame] | 434 | curtime = qemu_get_clock_ms(rt_clock); |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 435 | |
Blue Swirl | 72cf2d4 | 2009-09-12 07:36:22 +0000 | [diff] [blame] | 436 | QTAILQ_FOREACH(slirp, &slirp_instances, entry) { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 437 | /* |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 438 | * See if anything has timed out |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 439 | */ |
bellard | df5f895 | 2005-09-03 10:45:09 +0000 | [diff] [blame] | 440 | if (time_fasttimo && ((curtime - time_fasttimo) >= 2)) { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 441 | tcp_fasttimo(slirp); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 442 | time_fasttimo = 0; |
| 443 | } |
| 444 | if (do_slowtimo && ((curtime - last_slowtimo) >= 499)) { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 445 | ip_slowtimo(slirp); |
| 446 | tcp_slowtimo(slirp); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 447 | last_slowtimo = curtime; |
| 448 | } |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 449 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 450 | /* |
| 451 | * Check sockets |
| 452 | */ |
Jan Kiszka | d918f23 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 453 | if (!select_error) { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 454 | /* |
| 455 | * Check TCP sockets |
| 456 | */ |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 457 | for (so = slirp->tcb.so_next; so != &slirp->tcb; |
| 458 | so = so_next) { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 459 | so_next = so->so_next; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 460 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 461 | /* |
| 462 | * FD_ISSET is meaningless on these sockets |
| 463 | * (and they can crash the program) |
| 464 | */ |
| 465 | if (so->so_state & SS_NOFDREF || so->s == -1) |
| 466 | continue; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 467 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 468 | /* |
| 469 | * Check for URG data |
| 470 | * This will soread as well, so no need to |
| 471 | * test for readfds below if this succeeds |
| 472 | */ |
| 473 | if (FD_ISSET(so->s, xfds)) |
| 474 | sorecvoob(so); |
| 475 | /* |
| 476 | * Check sockets for reading |
| 477 | */ |
| 478 | else if (FD_ISSET(so->s, readfds)) { |
| 479 | /* |
| 480 | * Check for incoming connections |
| 481 | */ |
| 482 | if (so->so_state & SS_FACCEPTCONN) { |
| 483 | tcp_connect(so); |
| 484 | continue; |
| 485 | } /* else */ |
| 486 | ret = soread(so); |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 487 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 488 | /* Output it if we read something */ |
| 489 | if (ret > 0) |
| 490 | tcp_output(sototcpcb(so)); |
| 491 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 492 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 493 | /* |
| 494 | * Check sockets for writing |
| 495 | */ |
| 496 | if (FD_ISSET(so->s, writefds)) { |
| 497 | /* |
| 498 | * Check for non-blocking, still-connecting sockets |
| 499 | */ |
| 500 | if (so->so_state & SS_ISFCONNECTING) { |
| 501 | /* Connected */ |
| 502 | so->so_state &= ~SS_ISFCONNECTING; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 503 | |
malc | 0a656f5 | 2009-05-21 05:26:23 +0400 | [diff] [blame] | 504 | ret = send(so->s, (const void *) &ret, 0, 0); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 505 | if (ret < 0) { |
| 506 | /* XXXXX Must fix, zero bytes is a NOP */ |
| 507 | if (errno == EAGAIN || errno == EWOULDBLOCK || |
| 508 | errno == EINPROGRESS || errno == ENOTCONN) |
| 509 | continue; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 510 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 511 | /* else failed */ |
Jan Kiszka | f932b6c | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 512 | so->so_state &= SS_PERSISTENT_MASK; |
| 513 | so->so_state |= SS_NOFDREF; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 514 | } |
| 515 | /* else so->so_state &= ~SS_ISFCONNECTING; */ |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 516 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 517 | /* |
| 518 | * Continue tcp_input |
| 519 | */ |
| 520 | tcp_input((struct mbuf *)NULL, sizeof(struct ip), so); |
| 521 | /* continue; */ |
| 522 | } else |
| 523 | ret = sowrite(so); |
| 524 | /* |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 525 | * XXXXX If we wrote something (a lot), there |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 526 | * could be a need for a window update. |
| 527 | * In the worst case, the remote will send |
| 528 | * a window probe to get things going again |
| 529 | */ |
| 530 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 531 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 532 | /* |
| 533 | * Probe a still-connecting, non-blocking socket |
| 534 | * to check if it's still alive |
| 535 | */ |
| 536 | #ifdef PROBE_CONN |
| 537 | if (so->so_state & SS_ISFCONNECTING) { |
Blue Swirl | 00aa004 | 2011-07-23 20:04:29 +0000 | [diff] [blame] | 538 | ret = qemu_recv(so->s, &ret, 0,0); |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 539 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 540 | if (ret < 0) { |
| 541 | /* XXX */ |
| 542 | if (errno == EAGAIN || errno == EWOULDBLOCK || |
| 543 | errno == EINPROGRESS || errno == ENOTCONN) |
| 544 | continue; /* Still connecting, continue */ |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 545 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 546 | /* else failed */ |
Jan Kiszka | f932b6c | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 547 | so->so_state &= SS_PERSISTENT_MASK; |
| 548 | so->so_state |= SS_NOFDREF; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 549 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 550 | /* tcp_input will take care of it */ |
| 551 | } else { |
bellard | 02d2c54 | 2004-10-07 23:27:35 +0000 | [diff] [blame] | 552 | ret = send(so->s, &ret, 0,0); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 553 | if (ret < 0) { |
| 554 | /* XXX */ |
| 555 | if (errno == EAGAIN || errno == EWOULDBLOCK || |
| 556 | errno == EINPROGRESS || errno == ENOTCONN) |
| 557 | continue; |
| 558 | /* else failed */ |
Jan Kiszka | f932b6c | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 559 | so->so_state &= SS_PERSISTENT_MASK; |
| 560 | so->so_state |= SS_NOFDREF; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 561 | } else |
| 562 | so->so_state &= ~SS_ISFCONNECTING; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 563 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 564 | } |
| 565 | tcp_input((struct mbuf *)NULL, sizeof(struct ip),so); |
| 566 | } /* SS_ISFCONNECTING */ |
| 567 | #endif |
| 568 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 569 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 570 | /* |
| 571 | * Now UDP sockets. |
| 572 | * Incoming packets are sent straight away, they're not buffered. |
| 573 | * Incoming UDP data isn't buffered either. |
| 574 | */ |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 575 | for (so = slirp->udb.so_next; so != &slirp->udb; |
| 576 | so = so_next) { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 577 | so_next = so->so_next; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 578 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 579 | if (so->s != -1 && FD_ISSET(so->s, readfds)) { |
| 580 | sorecvfrom(so); |
| 581 | } |
| 582 | } |
Jan Kiszka | e6d43cf | 2011-07-20 12:20:18 +0200 | [diff] [blame] | 583 | |
| 584 | /* |
| 585 | * Check incoming ICMP relies. |
| 586 | */ |
| 587 | for (so = slirp->icmp.so_next; so != &slirp->icmp; |
| 588 | so = so_next) { |
| 589 | so_next = so->so_next; |
| 590 | |
| 591 | if (so->s != -1 && FD_ISSET(so->s, readfds)) { |
| 592 | icmp_receive(so); |
| 593 | } |
| 594 | } |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 595 | } |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 596 | |
Jan Kiszka | f373431 | 2012-03-06 00:02:23 +0100 | [diff] [blame] | 597 | if_start(slirp); |
Jan Kiszka | b1c99fc | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 598 | } |
bellard | 02d2c54 | 2004-10-07 23:27:35 +0000 | [diff] [blame] | 599 | |
| 600 | /* clear global file descriptor sets. |
| 601 | * these reside on the stack in vl.c |
| 602 | * so they're unusable if we're not in |
| 603 | * slirp_select_fill or slirp_select_poll. |
| 604 | */ |
| 605 | global_readfds = NULL; |
| 606 | global_writefds = NULL; |
| 607 | global_xfds = NULL; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 608 | } |
| 609 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 610 | static void arp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 611 | { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 612 | struct arphdr *ah = (struct arphdr *)(pkt + ETH_HLEN); |
Hervé Poussineau | dbf3c4b | 2010-09-15 22:33:26 +0200 | [diff] [blame] | 613 | uint8_t arp_reply[max(ETH_HLEN + sizeof(struct arphdr), 64)]; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 614 | struct ethhdr *reh = (struct ethhdr *)arp_reply; |
| 615 | struct arphdr *rah = (struct arphdr *)(arp_reply + ETH_HLEN); |
| 616 | int ar_op; |
bellard | a3d4af0 | 2004-09-05 23:10:26 +0000 | [diff] [blame] | 617 | struct ex_list *ex_ptr; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 618 | |
| 619 | ar_op = ntohs(ah->ar_op); |
| 620 | switch(ar_op) { |
| 621 | case ARPOP_REQUEST: |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 622 | if (ah->ar_tip == ah->ar_sip) { |
| 623 | /* Gratuitous ARP */ |
| 624 | arp_table_add(slirp, ah->ar_sip, ah->ar_sha); |
| 625 | return; |
| 626 | } |
| 627 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 628 | if ((ah->ar_tip & slirp->vnetwork_mask.s_addr) == |
| 629 | slirp->vnetwork_addr.s_addr) { |
| 630 | if (ah->ar_tip == slirp->vnameserver_addr.s_addr || |
| 631 | ah->ar_tip == slirp->vhost_addr.s_addr) |
bellard | a3d4af0 | 2004-09-05 23:10:26 +0000 | [diff] [blame] | 632 | goto arp_ok; |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 633 | 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] | 634 | if (ex_ptr->ex_addr.s_addr == ah->ar_tip) |
bellard | a3d4af0 | 2004-09-05 23:10:26 +0000 | [diff] [blame] | 635 | goto arp_ok; |
| 636 | } |
| 637 | return; |
| 638 | arp_ok: |
Hervé Poussineau | dbf3c4b | 2010-09-15 22:33:26 +0200 | [diff] [blame] | 639 | memset(arp_reply, 0, sizeof(arp_reply)); |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 640 | |
| 641 | arp_table_add(slirp, ah->ar_sip, ah->ar_sha); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 642 | |
| 643 | /* ARP request for alias/dns mac address */ |
| 644 | memcpy(reh->h_dest, pkt + ETH_ALEN, ETH_ALEN); |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 645 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); |
| 646 | memcpy(&reh->h_source[2], &ah->ar_tip, 4); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 647 | reh->h_proto = htons(ETH_P_ARP); |
| 648 | |
| 649 | rah->ar_hrd = htons(1); |
| 650 | rah->ar_pro = htons(ETH_P_IP); |
| 651 | rah->ar_hln = ETH_ALEN; |
| 652 | rah->ar_pln = 4; |
| 653 | rah->ar_op = htons(ARPOP_REPLY); |
| 654 | memcpy(rah->ar_sha, reh->h_source, ETH_ALEN); |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 655 | rah->ar_sip = ah->ar_tip; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 656 | memcpy(rah->ar_tha, ah->ar_sha, ETH_ALEN); |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 657 | rah->ar_tip = ah->ar_sip; |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 658 | slirp_output(slirp->opaque, arp_reply, sizeof(arp_reply)); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 659 | } |
| 660 | break; |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 661 | case ARPOP_REPLY: |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 662 | arp_table_add(slirp, ah->ar_sip, ah->ar_sha); |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 663 | break; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 664 | default: |
| 665 | break; |
| 666 | } |
| 667 | } |
| 668 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 669 | void slirp_input(Slirp *slirp, const uint8_t *pkt, int pkt_len) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 670 | { |
| 671 | struct mbuf *m; |
| 672 | int proto; |
| 673 | |
| 674 | if (pkt_len < ETH_HLEN) |
| 675 | return; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 676 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 677 | proto = ntohs(*(uint16_t *)(pkt + 12)); |
| 678 | switch(proto) { |
| 679 | case ETH_P_ARP: |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 680 | arp_input(slirp, pkt, pkt_len); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 681 | break; |
| 682 | case ETH_P_IP: |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 683 | m = m_get(slirp); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 684 | if (!m) |
| 685 | return; |
bellard | 38f3e7c | 2006-05-10 19:21:58 +0000 | [diff] [blame] | 686 | /* Note: we add to align the IP header */ |
aurel32 | e8e880a | 2008-12-07 18:15:23 +0000 | [diff] [blame] | 687 | if (M_FREEROOM(m) < pkt_len + 2) { |
| 688 | m_inc(m, pkt_len + 2); |
| 689 | } |
bellard | 38f3e7c | 2006-05-10 19:21:58 +0000 | [diff] [blame] | 690 | m->m_len = pkt_len + 2; |
| 691 | memcpy(m->m_data + 2, pkt, pkt_len); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 692 | |
bellard | 38f3e7c | 2006-05-10 19:21:58 +0000 | [diff] [blame] | 693 | m->m_data += 2 + ETH_HLEN; |
| 694 | m->m_len -= 2 + ETH_HLEN; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 695 | |
| 696 | ip_input(m); |
| 697 | break; |
| 698 | default: |
| 699 | break; |
| 700 | } |
| 701 | } |
| 702 | |
Fabien Chouteau | 1ab74ce | 2011-08-01 18:18:37 +0200 | [diff] [blame] | 703 | /* Output the IP packet to the ethernet device. Returns 0 if the packet must be |
| 704 | * re-queued. |
| 705 | */ |
| 706 | int if_encap(Slirp *slirp, struct mbuf *ifm) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 707 | { |
| 708 | uint8_t buf[1600]; |
| 709 | struct ethhdr *eh = (struct ethhdr *)buf; |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 710 | uint8_t ethaddr[ETH_ALEN]; |
Fabien Chouteau | 1ab74ce | 2011-08-01 18:18:37 +0200 | [diff] [blame] | 711 | const struct ip *iph = (const struct ip *)ifm->m_data; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 712 | |
Fabien Chouteau | 1ab74ce | 2011-08-01 18:18:37 +0200 | [diff] [blame] | 713 | if (ifm->m_len + ETH_HLEN > sizeof(buf)) { |
| 714 | return 1; |
| 715 | } |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 716 | |
| 717 | if (!arp_table_search(slirp, iph->ip_dst.s_addr, ethaddr)) { |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 718 | uint8_t arp_req[ETH_HLEN + sizeof(struct arphdr)]; |
| 719 | struct ethhdr *reh = (struct ethhdr *)arp_req; |
| 720 | struct arphdr *rah = (struct arphdr *)(arp_req + ETH_HLEN); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 721 | |
Fabien Chouteau | 1ab74ce | 2011-08-01 18:18:37 +0200 | [diff] [blame] | 722 | if (!ifm->arp_requested) { |
| 723 | /* If the client addr is not known, send an ARP request */ |
| 724 | memset(reh->h_dest, 0xff, ETH_ALEN); |
| 725 | memcpy(reh->h_source, special_ethaddr, ETH_ALEN - 4); |
| 726 | memcpy(&reh->h_source[2], &slirp->vhost_addr, 4); |
| 727 | reh->h_proto = htons(ETH_P_ARP); |
| 728 | rah->ar_hrd = htons(1); |
| 729 | rah->ar_pro = htons(ETH_P_IP); |
| 730 | rah->ar_hln = ETH_ALEN; |
| 731 | rah->ar_pln = 4; |
| 732 | rah->ar_op = htons(ARPOP_REQUEST); |
| 733 | |
| 734 | /* source hw addr */ |
| 735 | memcpy(rah->ar_sha, special_ethaddr, ETH_ALEN - 4); |
| 736 | memcpy(&rah->ar_sha[2], &slirp->vhost_addr, 4); |
| 737 | |
| 738 | /* source IP */ |
| 739 | rah->ar_sip = slirp->vhost_addr.s_addr; |
| 740 | |
| 741 | /* target hw addr (none) */ |
| 742 | memset(rah->ar_tha, 0, ETH_ALEN); |
| 743 | |
| 744 | /* target IP */ |
| 745 | rah->ar_tip = iph->ip_dst.s_addr; |
| 746 | slirp->client_ipaddr = iph->ip_dst; |
| 747 | slirp_output(slirp->opaque, arp_req, sizeof(arp_req)); |
| 748 | ifm->arp_requested = true; |
Jan Kiszka | e3a110b | 2011-08-05 14:05:53 +0200 | [diff] [blame] | 749 | |
| 750 | /* Expire request and drop outgoing packet after 1 second */ |
| 751 | ifm->expiration_date = qemu_get_clock_ns(rt_clock) + 1000000000ULL; |
Fabien Chouteau | 1ab74ce | 2011-08-01 18:18:37 +0200 | [diff] [blame] | 752 | } |
| 753 | return 0; |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 754 | } else { |
Fabien Chouteau | 1a0ca1e | 2011-08-03 12:52:54 +0200 | [diff] [blame] | 755 | memcpy(eh->h_dest, ethaddr, ETH_ALEN); |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 756 | memcpy(eh->h_source, special_ethaddr, ETH_ALEN - 4); |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 757 | /* XXX: not correct */ |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 758 | memcpy(&eh->h_source[2], &slirp->vhost_addr, 4); |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 759 | eh->h_proto = htons(ETH_P_IP); |
Fabien Chouteau | 1ab74ce | 2011-08-01 18:18:37 +0200 | [diff] [blame] | 760 | memcpy(buf + sizeof(struct ethhdr), ifm->m_data, ifm->m_len); |
| 761 | slirp_output(slirp->opaque, buf, ifm->m_len + ETH_HLEN); |
| 762 | return 1; |
bellard | de806f0 | 2008-10-17 17:28:58 +0000 | [diff] [blame] | 763 | } |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 764 | } |
bellard | 9bf0544 | 2004-08-25 22:12:49 +0000 | [diff] [blame] | 765 | |
Jan Kiszka | 9c12a6f | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 766 | /* Drop host forwarding rule, return 0 if found. */ |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 767 | int slirp_remove_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
| 768 | int host_port) |
Alexander Graf | c1261d8 | 2009-05-26 13:03:26 +0200 | [diff] [blame] | 769 | { |
| 770 | struct socket *so; |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 771 | struct socket *head = (is_udp ? &slirp->udb : &slirp->tcb); |
Jan Kiszka | 2ad82cf | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 772 | struct sockaddr_in addr; |
| 773 | int port = htons(host_port); |
| 774 | socklen_t addr_len; |
Alexander Graf | c1261d8 | 2009-05-26 13:03:26 +0200 | [diff] [blame] | 775 | |
Alexander Graf | c1261d8 | 2009-05-26 13:03:26 +0200 | [diff] [blame] | 776 | for (so = head->so_next; so != head; so = so->so_next) { |
Jan Kiszka | 2ad82cf | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 777 | addr_len = sizeof(addr); |
Jan Kiszka | 9c12a6f | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 778 | if ((so->so_state & SS_HOSTFWD) && |
| 779 | getsockname(so->s, (struct sockaddr *)&addr, &addr_len) == 0 && |
Jan Kiszka | 3c6a058 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 780 | addr.sin_addr.s_addr == host_addr.s_addr && |
Jan Kiszka | 2ad82cf | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 781 | addr.sin_port == port) { |
Alexander Graf | c1261d8 | 2009-05-26 13:03:26 +0200 | [diff] [blame] | 782 | close(so->s); |
| 783 | sofree(so); |
Jan Kiszka | 9c12a6f | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 784 | return 0; |
Alexander Graf | c1261d8 | 2009-05-26 13:03:26 +0200 | [diff] [blame] | 785 | } |
| 786 | } |
| 787 | |
Jan Kiszka | 9c12a6f | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 788 | return -1; |
Alexander Graf | c1261d8 | 2009-05-26 13:03:26 +0200 | [diff] [blame] | 789 | } |
| 790 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 791 | int slirp_add_hostfwd(Slirp *slirp, int is_udp, struct in_addr host_addr, |
| 792 | int host_port, struct in_addr guest_addr, int guest_port) |
bellard | 9bf0544 | 2004-08-25 22:12:49 +0000 | [diff] [blame] | 793 | { |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 794 | if (!guest_addr.s_addr) { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 795 | guest_addr = slirp->vdhcp_startaddr; |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 796 | } |
bellard | 9bf0544 | 2004-08-25 22:12:49 +0000 | [diff] [blame] | 797 | if (is_udp) { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 798 | if (!udp_listen(slirp, host_addr.s_addr, htons(host_port), |
| 799 | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) |
bellard | 9bf0544 | 2004-08-25 22:12:49 +0000 | [diff] [blame] | 800 | return -1; |
| 801 | } else { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 802 | if (!tcp_listen(slirp, host_addr.s_addr, htons(host_port), |
| 803 | guest_addr.s_addr, htons(guest_port), SS_HOSTFWD)) |
bellard | 9bf0544 | 2004-08-25 22:12:49 +0000 | [diff] [blame] | 804 | return -1; |
| 805 | } |
| 806 | return 0; |
| 807 | } |
bellard | a3d4af0 | 2004-09-05 23:10:26 +0000 | [diff] [blame] | 808 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 809 | int slirp_add_exec(Slirp *slirp, int do_pty, const void *args, |
Jan Kiszka | bb53fc5 | 2009-07-22 17:03:52 +0200 | [diff] [blame] | 810 | struct in_addr *guest_addr, int guest_port) |
bellard | a3d4af0 | 2004-09-05 23:10:26 +0000 | [diff] [blame] | 811 | { |
Jan Kiszka | bb53fc5 | 2009-07-22 17:03:52 +0200 | [diff] [blame] | 812 | if (!guest_addr->s_addr) { |
| 813 | guest_addr->s_addr = slirp->vnetwork_addr.s_addr | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 814 | (htonl(0x0204) & ~slirp->vnetwork_mask.s_addr); |
Jan Kiszka | c92ef6a | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 815 | } |
Jan Kiszka | bb53fc5 | 2009-07-22 17:03:52 +0200 | [diff] [blame] | 816 | if ((guest_addr->s_addr & slirp->vnetwork_mask.s_addr) != |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 817 | slirp->vnetwork_addr.s_addr || |
Jan Kiszka | bb53fc5 | 2009-07-22 17:03:52 +0200 | [diff] [blame] | 818 | guest_addr->s_addr == slirp->vhost_addr.s_addr || |
| 819 | guest_addr->s_addr == slirp->vnameserver_addr.s_addr) { |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 820 | return -1; |
| 821 | } |
Jan Kiszka | bb53fc5 | 2009-07-22 17:03:52 +0200 | [diff] [blame] | 822 | return add_exec(&slirp->exec_list, do_pty, (char *)args, *guest_addr, |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 823 | htons(guest_port)); |
bellard | a3d4af0 | 2004-09-05 23:10:26 +0000 | [diff] [blame] | 824 | } |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 825 | |
| 826 | ssize_t slirp_send(struct socket *so, const void *buf, size_t len, int flags) |
| 827 | { |
| 828 | if (so->s == -1 && so->extra) { |
Anthony Liguori | 2cc6e0a | 2011-08-15 11:17:28 -0500 | [diff] [blame] | 829 | qemu_chr_fe_write(so->extra, buf, len); |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 830 | return len; |
| 831 | } |
| 832 | |
| 833 | return send(so->s, buf, len, flags); |
| 834 | } |
| 835 | |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 836 | static struct socket * |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 837 | 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] | 838 | { |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 839 | struct socket *so; |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 840 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 841 | 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] | 842 | if (so->so_faddr.s_addr == guest_addr.s_addr && |
| 843 | htons(so->so_fport) == guest_port) { |
| 844 | return so; |
| 845 | } |
| 846 | } |
| 847 | return NULL; |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 848 | } |
| 849 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 850 | size_t slirp_socket_can_recv(Slirp *slirp, struct in_addr guest_addr, |
| 851 | int guest_port) |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 852 | { |
| 853 | struct iovec iov[2]; |
| 854 | struct socket *so; |
| 855 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 856 | so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 857 | |
| 858 | if (!so || so->so_state & SS_NOFDREF) |
| 859 | return 0; |
| 860 | |
| 861 | if (!CONN_CANFRCV(so) || so->so_snd.sb_cc >= (so->so_snd.sb_datalen/2)) |
| 862 | return 0; |
| 863 | |
| 864 | return sopreprbuf(so, iov, NULL); |
| 865 | } |
| 866 | |
Jan Kiszka | 9f8bd04 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 867 | 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] | 868 | const uint8_t *buf, int size) |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 869 | { |
| 870 | int ret; |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 871 | struct socket *so = slirp_find_ctl_socket(slirp, guest_addr, guest_port); |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 872 | |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 873 | if (!so) |
| 874 | return; |
| 875 | |
blueswir1 | 0580ac9 | 2009-01-12 17:51:06 +0000 | [diff] [blame] | 876 | ret = soreadbuf(so, (const char *)buf, size); |
aliguori | e1c5a2b | 2009-01-08 19:18:21 +0000 | [diff] [blame] | 877 | |
| 878 | if (ret > 0) |
| 879 | tcp_output(sototcpcb(so)); |
| 880 | } |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 881 | |
| 882 | static void slirp_tcp_save(QEMUFile *f, struct tcpcb *tp) |
| 883 | { |
| 884 | int i; |
| 885 | |
| 886 | qemu_put_sbe16(f, tp->t_state); |
| 887 | for (i = 0; i < TCPT_NTIMERS; i++) |
| 888 | qemu_put_sbe16(f, tp->t_timer[i]); |
| 889 | qemu_put_sbe16(f, tp->t_rxtshift); |
| 890 | qemu_put_sbe16(f, tp->t_rxtcur); |
| 891 | qemu_put_sbe16(f, tp->t_dupacks); |
| 892 | qemu_put_be16(f, tp->t_maxseg); |
| 893 | qemu_put_sbyte(f, tp->t_force); |
| 894 | qemu_put_be16(f, tp->t_flags); |
| 895 | qemu_put_be32(f, tp->snd_una); |
| 896 | qemu_put_be32(f, tp->snd_nxt); |
| 897 | qemu_put_be32(f, tp->snd_up); |
| 898 | qemu_put_be32(f, tp->snd_wl1); |
| 899 | qemu_put_be32(f, tp->snd_wl2); |
| 900 | qemu_put_be32(f, tp->iss); |
| 901 | qemu_put_be32(f, tp->snd_wnd); |
| 902 | qemu_put_be32(f, tp->rcv_wnd); |
| 903 | qemu_put_be32(f, tp->rcv_nxt); |
| 904 | qemu_put_be32(f, tp->rcv_up); |
| 905 | qemu_put_be32(f, tp->irs); |
| 906 | qemu_put_be32(f, tp->rcv_adv); |
| 907 | qemu_put_be32(f, tp->snd_max); |
| 908 | qemu_put_be32(f, tp->snd_cwnd); |
| 909 | qemu_put_be32(f, tp->snd_ssthresh); |
| 910 | qemu_put_sbe16(f, tp->t_idle); |
| 911 | qemu_put_sbe16(f, tp->t_rtt); |
| 912 | qemu_put_be32(f, tp->t_rtseq); |
| 913 | qemu_put_sbe16(f, tp->t_srtt); |
| 914 | qemu_put_sbe16(f, tp->t_rttvar); |
| 915 | qemu_put_be16(f, tp->t_rttmin); |
| 916 | qemu_put_be32(f, tp->max_sndwnd); |
| 917 | qemu_put_byte(f, tp->t_oobflags); |
| 918 | qemu_put_byte(f, tp->t_iobc); |
| 919 | qemu_put_sbe16(f, tp->t_softerror); |
| 920 | qemu_put_byte(f, tp->snd_scale); |
| 921 | qemu_put_byte(f, tp->rcv_scale); |
| 922 | qemu_put_byte(f, tp->request_r_scale); |
| 923 | qemu_put_byte(f, tp->requested_s_scale); |
| 924 | qemu_put_be32(f, tp->ts_recent); |
| 925 | qemu_put_be32(f, tp->ts_recent_age); |
| 926 | qemu_put_be32(f, tp->last_ack_sent); |
| 927 | } |
| 928 | |
| 929 | static void slirp_sbuf_save(QEMUFile *f, struct sbuf *sbuf) |
| 930 | { |
| 931 | uint32_t off; |
| 932 | |
| 933 | qemu_put_be32(f, sbuf->sb_cc); |
| 934 | qemu_put_be32(f, sbuf->sb_datalen); |
| 935 | off = (uint32_t)(sbuf->sb_wptr - sbuf->sb_data); |
| 936 | qemu_put_sbe32(f, off); |
| 937 | off = (uint32_t)(sbuf->sb_rptr - sbuf->sb_data); |
| 938 | qemu_put_sbe32(f, off); |
| 939 | qemu_put_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); |
| 940 | } |
| 941 | |
| 942 | static void slirp_socket_save(QEMUFile *f, struct socket *so) |
| 943 | { |
| 944 | qemu_put_be32(f, so->so_urgc); |
| 945 | qemu_put_be32(f, so->so_faddr.s_addr); |
| 946 | qemu_put_be32(f, so->so_laddr.s_addr); |
| 947 | qemu_put_be16(f, so->so_fport); |
| 948 | qemu_put_be16(f, so->so_lport); |
| 949 | qemu_put_byte(f, so->so_iptos); |
| 950 | qemu_put_byte(f, so->so_emu); |
| 951 | qemu_put_byte(f, so->so_type); |
| 952 | qemu_put_be32(f, so->so_state); |
| 953 | slirp_sbuf_save(f, &so->so_rcv); |
| 954 | slirp_sbuf_save(f, &so->so_snd); |
| 955 | slirp_tcp_save(f, so->so_tcpcb); |
| 956 | } |
| 957 | |
Jan Kiszka | 0a1f851 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 958 | static void slirp_bootp_save(QEMUFile *f, Slirp *slirp) |
| 959 | { |
| 960 | int i; |
| 961 | |
| 962 | for (i = 0; i < NB_BOOTP_CLIENTS; i++) { |
| 963 | qemu_put_be16(f, slirp->bootp_clients[i].allocated); |
| 964 | qemu_put_buffer(f, slirp->bootp_clients[i].macaddr, 6); |
| 965 | } |
| 966 | } |
| 967 | |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 968 | static void slirp_state_save(QEMUFile *f, void *opaque) |
| 969 | { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 970 | Slirp *slirp = opaque; |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 971 | struct ex_list *ex_ptr; |
| 972 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 973 | 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] | 974 | if (ex_ptr->ex_pty == 3) { |
| 975 | struct socket *so; |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 976 | so = slirp_find_ctl_socket(slirp, ex_ptr->ex_addr, |
| 977 | ntohs(ex_ptr->ex_fport)); |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 978 | if (!so) |
| 979 | continue; |
| 980 | |
| 981 | qemu_put_byte(f, 42); |
| 982 | slirp_socket_save(f, so); |
| 983 | } |
| 984 | qemu_put_byte(f, 0); |
Jan Kiszka | 285f7a6 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 985 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 986 | qemu_put_be16(f, slirp->ip_id); |
Jan Kiszka | 0a1f851 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 987 | |
| 988 | slirp_bootp_save(f, slirp); |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 989 | } |
| 990 | |
| 991 | static void slirp_tcp_load(QEMUFile *f, struct tcpcb *tp) |
| 992 | { |
| 993 | int i; |
| 994 | |
| 995 | tp->t_state = qemu_get_sbe16(f); |
| 996 | for (i = 0; i < TCPT_NTIMERS; i++) |
| 997 | tp->t_timer[i] = qemu_get_sbe16(f); |
| 998 | tp->t_rxtshift = qemu_get_sbe16(f); |
| 999 | tp->t_rxtcur = qemu_get_sbe16(f); |
| 1000 | tp->t_dupacks = qemu_get_sbe16(f); |
| 1001 | tp->t_maxseg = qemu_get_be16(f); |
| 1002 | tp->t_force = qemu_get_sbyte(f); |
| 1003 | tp->t_flags = qemu_get_be16(f); |
| 1004 | tp->snd_una = qemu_get_be32(f); |
| 1005 | tp->snd_nxt = qemu_get_be32(f); |
| 1006 | tp->snd_up = qemu_get_be32(f); |
| 1007 | tp->snd_wl1 = qemu_get_be32(f); |
| 1008 | tp->snd_wl2 = qemu_get_be32(f); |
| 1009 | tp->iss = qemu_get_be32(f); |
| 1010 | tp->snd_wnd = qemu_get_be32(f); |
| 1011 | tp->rcv_wnd = qemu_get_be32(f); |
| 1012 | tp->rcv_nxt = qemu_get_be32(f); |
| 1013 | tp->rcv_up = qemu_get_be32(f); |
| 1014 | tp->irs = qemu_get_be32(f); |
| 1015 | tp->rcv_adv = qemu_get_be32(f); |
| 1016 | tp->snd_max = qemu_get_be32(f); |
| 1017 | tp->snd_cwnd = qemu_get_be32(f); |
| 1018 | tp->snd_ssthresh = qemu_get_be32(f); |
| 1019 | tp->t_idle = qemu_get_sbe16(f); |
| 1020 | tp->t_rtt = qemu_get_sbe16(f); |
| 1021 | tp->t_rtseq = qemu_get_be32(f); |
| 1022 | tp->t_srtt = qemu_get_sbe16(f); |
| 1023 | tp->t_rttvar = qemu_get_sbe16(f); |
| 1024 | tp->t_rttmin = qemu_get_be16(f); |
| 1025 | tp->max_sndwnd = qemu_get_be32(f); |
| 1026 | tp->t_oobflags = qemu_get_byte(f); |
| 1027 | tp->t_iobc = qemu_get_byte(f); |
| 1028 | tp->t_softerror = qemu_get_sbe16(f); |
| 1029 | tp->snd_scale = qemu_get_byte(f); |
| 1030 | tp->rcv_scale = qemu_get_byte(f); |
| 1031 | tp->request_r_scale = qemu_get_byte(f); |
| 1032 | tp->requested_s_scale = qemu_get_byte(f); |
| 1033 | tp->ts_recent = qemu_get_be32(f); |
| 1034 | tp->ts_recent_age = qemu_get_be32(f); |
| 1035 | tp->last_ack_sent = qemu_get_be32(f); |
| 1036 | tcp_template(tp); |
| 1037 | } |
| 1038 | |
| 1039 | static int slirp_sbuf_load(QEMUFile *f, struct sbuf *sbuf) |
| 1040 | { |
| 1041 | uint32_t off, sb_cc, sb_datalen; |
| 1042 | |
| 1043 | sb_cc = qemu_get_be32(f); |
| 1044 | sb_datalen = qemu_get_be32(f); |
| 1045 | |
| 1046 | sbreserve(sbuf, sb_datalen); |
| 1047 | |
| 1048 | if (sbuf->sb_datalen != sb_datalen) |
| 1049 | return -ENOMEM; |
| 1050 | |
| 1051 | sbuf->sb_cc = sb_cc; |
| 1052 | |
| 1053 | off = qemu_get_sbe32(f); |
| 1054 | sbuf->sb_wptr = sbuf->sb_data + off; |
| 1055 | off = qemu_get_sbe32(f); |
| 1056 | sbuf->sb_rptr = sbuf->sb_data + off; |
| 1057 | qemu_get_buffer(f, (unsigned char*)sbuf->sb_data, sbuf->sb_datalen); |
| 1058 | |
| 1059 | return 0; |
| 1060 | } |
| 1061 | |
| 1062 | static int slirp_socket_load(QEMUFile *f, struct socket *so) |
| 1063 | { |
| 1064 | if (tcp_attach(so) < 0) |
| 1065 | return -ENOMEM; |
| 1066 | |
| 1067 | so->so_urgc = qemu_get_be32(f); |
| 1068 | so->so_faddr.s_addr = qemu_get_be32(f); |
| 1069 | so->so_laddr.s_addr = qemu_get_be32(f); |
| 1070 | so->so_fport = qemu_get_be16(f); |
| 1071 | so->so_lport = qemu_get_be16(f); |
| 1072 | so->so_iptos = qemu_get_byte(f); |
| 1073 | so->so_emu = qemu_get_byte(f); |
| 1074 | so->so_type = qemu_get_byte(f); |
| 1075 | so->so_state = qemu_get_be32(f); |
| 1076 | if (slirp_sbuf_load(f, &so->so_rcv) < 0) |
| 1077 | return -ENOMEM; |
| 1078 | if (slirp_sbuf_load(f, &so->so_snd) < 0) |
| 1079 | return -ENOMEM; |
| 1080 | slirp_tcp_load(f, so->so_tcpcb); |
| 1081 | |
| 1082 | return 0; |
| 1083 | } |
| 1084 | |
Jan Kiszka | 0a1f851 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1085 | static void slirp_bootp_load(QEMUFile *f, Slirp *slirp) |
| 1086 | { |
| 1087 | int i; |
| 1088 | |
| 1089 | for (i = 0; i < NB_BOOTP_CLIENTS; i++) { |
| 1090 | slirp->bootp_clients[i].allocated = qemu_get_be16(f); |
| 1091 | qemu_get_buffer(f, slirp->bootp_clients[i].macaddr, 6); |
| 1092 | } |
| 1093 | } |
| 1094 | |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1095 | static int slirp_state_load(QEMUFile *f, void *opaque, int version_id) |
| 1096 | { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1097 | Slirp *slirp = opaque; |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1098 | struct ex_list *ex_ptr; |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1099 | |
Blue Swirl | b0e0486 | 2010-03-07 13:45:38 +0000 | [diff] [blame] | 1100 | while (qemu_get_byte(f)) { |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1101 | int ret; |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1102 | struct socket *so = socreate(slirp); |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1103 | |
| 1104 | if (!so) |
| 1105 | return -ENOMEM; |
| 1106 | |
| 1107 | ret = slirp_socket_load(f, so); |
| 1108 | |
| 1109 | if (ret < 0) |
| 1110 | return ret; |
| 1111 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1112 | if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) != |
| 1113 | slirp->vnetwork_addr.s_addr) { |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1114 | return -EINVAL; |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 1115 | } |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1116 | 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] | 1117 | if (ex_ptr->ex_pty == 3 && |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 1118 | so->so_faddr.s_addr == ex_ptr->ex_addr.s_addr && |
| 1119 | so->so_fport == ex_ptr->ex_fport) { |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1120 | break; |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 1121 | } |
| 1122 | } |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1123 | if (!ex_ptr) |
| 1124 | return -EINVAL; |
| 1125 | |
blueswir1 | 0580ac9 | 2009-01-12 17:51:06 +0000 | [diff] [blame] | 1126 | so->extra = (void *)ex_ptr->ex_exec; |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1127 | } |
| 1128 | |
Jan Kiszka | 285f7a6 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 1129 | if (version_id >= 2) { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1130 | slirp->ip_id = qemu_get_be16(f); |
Jan Kiszka | 285f7a6 | 2009-06-24 14:42:30 +0200 | [diff] [blame] | 1131 | } |
| 1132 | |
Jan Kiszka | 0a1f851 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 1133 | if (version_id >= 3) { |
| 1134 | slirp_bootp_load(f, slirp); |
| 1135 | } |
| 1136 | |
aliguori | 062e552 | 2009-01-08 19:27:07 +0000 | [diff] [blame] | 1137 | return 0; |
| 1138 | } |