bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1982, 1986, 1988, 1990, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
aliguori | 2f5f899 | 2009-01-26 19:37:41 +0000 | [diff] [blame] | 13 | * 3. Neither the name of the University nor the names of its contributors |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 14 | * may be used to endorse or promote products derived from this software |
| 15 | * without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | * |
| 29 | * @(#)udp_usrreq.c 8.4 (Berkeley) 1/21/94 |
| 30 | * udp_usrreq.c,v 1.4 1994/10/02 17:48:45 phk Exp |
| 31 | */ |
| 32 | |
| 33 | /* |
| 34 | * Changes and additions relating to SLiRP |
| 35 | * Copyright (c) 1995 Danny Gasparovski. |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 36 | * |
| 37 | * Please read the file COPYRIGHT for the |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 38 | * terms and conditions of the copyright. |
| 39 | */ |
| 40 | |
| 41 | #include <slirp.h> |
| 42 | #include "ip_icmp.h" |
| 43 | |
Stefan Weil | b6dce92 | 2010-07-22 22:15:23 +0200 | [diff] [blame] | 44 | static uint8_t udp_tos(struct socket *so); |
blueswir1 | 9634d90 | 2007-10-26 19:01:16 +0000 | [diff] [blame] | 45 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 46 | void |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 47 | udp_init(Slirp *slirp) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 48 | { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 49 | slirp->udb.so_next = slirp->udb.so_prev = &slirp->udb; |
| 50 | slirp->udp_last_so = &slirp->udb; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 51 | } |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 52 | /* m->m_data points at ip packet header |
| 53 | * m->m_len length ip packet |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 54 | * ip->ip_len length data (IPDU) |
| 55 | */ |
| 56 | void |
blueswir1 | aeed97c | 2009-04-18 07:32:41 +0000 | [diff] [blame] | 57 | udp_input(register struct mbuf *m, int iphlen) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 58 | { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 59 | Slirp *slirp = m->slirp; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 60 | register struct ip *ip; |
| 61 | register struct udphdr *uh; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 62 | int len; |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 63 | struct ip save_ip; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 64 | struct socket *so; |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 65 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 66 | DEBUG_CALL("udp_input"); |
| 67 | DEBUG_ARG("m = %lx", (long)m); |
| 68 | DEBUG_ARG("iphlen = %d", iphlen); |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 69 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 70 | /* |
| 71 | * Strip IP options, if any; should skip this, |
| 72 | * make available to user, and use on returned packets, |
| 73 | * but we don't yet have a way to check the checksum |
| 74 | * with options still present. |
| 75 | */ |
| 76 | if(iphlen > sizeof(struct ip)) { |
| 77 | ip_stripoptions(m, (struct mbuf *)0); |
| 78 | iphlen = sizeof(struct ip); |
| 79 | } |
| 80 | |
| 81 | /* |
| 82 | * Get IP and UDP header together in first mbuf. |
| 83 | */ |
| 84 | ip = mtod(m, struct ip *); |
| 85 | uh = (struct udphdr *)((caddr_t)ip + iphlen); |
| 86 | |
| 87 | /* |
| 88 | * Make mbuf data length reflect UDP length. |
| 89 | * If not enough data to reflect UDP length, drop. |
| 90 | */ |
Stefan Weil | b6dce92 | 2010-07-22 22:15:23 +0200 | [diff] [blame] | 91 | len = ntohs((uint16_t)uh->uh_ulen); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 92 | |
| 93 | if (ip->ip_len != len) { |
| 94 | if (len > ip->ip_len) { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 95 | goto bad; |
| 96 | } |
| 97 | m_adj(m, len - ip->ip_len); |
| 98 | ip->ip_len = len; |
| 99 | } |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 100 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 101 | /* |
| 102 | * Save a copy of the IP header in case we want restore it |
| 103 | * for sending an ICMP error message in response. |
| 104 | */ |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 105 | save_ip = *ip; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 106 | save_ip.ip_len+= iphlen; /* tcp_input subtracts this */ |
| 107 | |
| 108 | /* |
| 109 | * Checksum extended UDP header and data. |
| 110 | */ |
Jan Kiszka | 0d62c4c | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 111 | if (uh->uh_sum) { |
blueswir1 | 429d0a3 | 2009-01-13 19:48:42 +0000 | [diff] [blame] | 112 | memset(&((struct ipovly *)ip)->ih_mbuf, 0, sizeof(struct mbuf_ptr)); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 113 | ((struct ipovly *)ip)->ih_x1 = 0; |
| 114 | ((struct ipovly *)ip)->ih_len = uh->uh_ulen; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 115 | if(cksum(m, len + sizeof(struct ip))) { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 116 | goto bad; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | /* |
| 121 | * handle DHCP/BOOTP |
| 122 | */ |
| 123 | if (ntohs(uh->uh_dport) == BOOTP_SERVER) { |
| 124 | bootp_input(m); |
| 125 | goto bad; |
| 126 | } |
| 127 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 128 | if (slirp->restricted) { |
aliguori | a9ba3a8 | 2009-01-08 19:24:00 +0000 | [diff] [blame] | 129 | goto bad; |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 130 | } |
aliguori | a9ba3a8 | 2009-01-08 19:24:00 +0000 | [diff] [blame] | 131 | |
bellard | c7f7464 | 2004-08-24 21:57:12 +0000 | [diff] [blame] | 132 | /* |
| 133 | * handle TFTP |
| 134 | */ |
| 135 | if (ntohs(uh->uh_dport) == TFTP_SERVER) { |
| 136 | tftp_input(m); |
| 137 | goto bad; |
| 138 | } |
| 139 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 140 | /* |
| 141 | * Locate pcb for datagram. |
| 142 | */ |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 143 | so = slirp->udp_last_so; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 144 | if (so->so_lport != uh->uh_sport || |
| 145 | so->so_laddr.s_addr != ip->ip_src.s_addr) { |
| 146 | struct socket *tmp; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 147 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 148 | for (tmp = slirp->udb.so_next; tmp != &slirp->udb; |
| 149 | tmp = tmp->so_next) { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 150 | if (tmp->so_lport == uh->uh_sport && |
| 151 | tmp->so_laddr.s_addr == ip->ip_src.s_addr) { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 152 | so = tmp; |
| 153 | break; |
| 154 | } |
| 155 | } |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 156 | if (tmp == &slirp->udb) { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 157 | so = NULL; |
| 158 | } else { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 159 | slirp->udp_last_so = so; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 160 | } |
| 161 | } |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 162 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 163 | if (so == NULL) { |
| 164 | /* |
| 165 | * If there's no socket for this packet, |
| 166 | * create one |
| 167 | */ |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 168 | so = socreate(slirp); |
| 169 | if (!so) { |
| 170 | goto bad; |
| 171 | } |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 172 | if(udp_attach(so) == -1) { |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 173 | DEBUG_MISC((dfd," udp_attach errno = %d-%s\n", |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 174 | errno,strerror(errno))); |
| 175 | sofree(so); |
| 176 | goto bad; |
| 177 | } |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 178 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 179 | /* |
| 180 | * Setup fields |
| 181 | */ |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 182 | so->so_laddr = ip->ip_src; |
| 183 | so->so_lport = uh->uh_sport; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 184 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 185 | if ((so->so_iptos = udp_tos(so)) == 0) |
| 186 | so->so_iptos = ip->ip_tos; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 187 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 188 | /* |
| 189 | * XXXXX Here, check if it's in udpexec_list, |
| 190 | * and if it is, do the fork_exec() etc. |
| 191 | */ |
| 192 | } |
| 193 | |
ths | 54fd9cd | 2007-01-17 22:47:40 +0000 | [diff] [blame] | 194 | so->so_faddr = ip->ip_dst; /* XXX */ |
| 195 | so->so_fport = uh->uh_dport; /* XXX */ |
| 196 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 197 | iphlen += sizeof(struct udphdr); |
| 198 | m->m_len -= iphlen; |
| 199 | m->m_data += iphlen; |
| 200 | |
| 201 | /* |
| 202 | * Now we sendto() the packet. |
| 203 | */ |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 204 | if(sosendto(so,m) == -1) { |
| 205 | m->m_len += iphlen; |
| 206 | m->m_data -= iphlen; |
| 207 | *ip=save_ip; |
| 208 | DEBUG_MISC((dfd,"udp tx errno = %d-%s\n",errno,strerror(errno))); |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 209 | icmp_error(m, ICMP_UNREACH,ICMP_UNREACH_NET, 0,strerror(errno)); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 210 | } |
| 211 | |
| 212 | m_free(so->so_m); /* used for ICMP if error on sorecvfrom */ |
| 213 | |
| 214 | /* restore the orig mbuf packet */ |
| 215 | m->m_len += iphlen; |
| 216 | m->m_data -= iphlen; |
| 217 | *ip=save_ip; |
| 218 | so->so_m=m; /* ICMP backup */ |
| 219 | |
| 220 | return; |
| 221 | bad: |
| 222 | m_freem(m); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 223 | return; |
| 224 | } |
| 225 | |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 226 | int udp_output2(struct socket *so, struct mbuf *m, |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 227 | struct sockaddr_in *saddr, struct sockaddr_in *daddr, |
| 228 | int iptos) |
| 229 | { |
| 230 | register struct udpiphdr *ui; |
| 231 | int error = 0; |
| 232 | |
| 233 | DEBUG_CALL("udp_output"); |
| 234 | DEBUG_ARG("so = %lx", (long)so); |
| 235 | DEBUG_ARG("m = %lx", (long)m); |
| 236 | DEBUG_ARG("saddr = %lx", (long)saddr->sin_addr.s_addr); |
| 237 | DEBUG_ARG("daddr = %lx", (long)daddr->sin_addr.s_addr); |
| 238 | |
| 239 | /* |
| 240 | * Adjust for header |
| 241 | */ |
| 242 | m->m_data -= sizeof(struct udpiphdr); |
| 243 | m->m_len += sizeof(struct udpiphdr); |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 244 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 245 | /* |
| 246 | * Fill in mbuf with extended UDP header |
| 247 | * and addresses and length put into network format. |
| 248 | */ |
| 249 | ui = mtod(m, struct udpiphdr *); |
blueswir1 | 429d0a3 | 2009-01-13 19:48:42 +0000 | [diff] [blame] | 250 | memset(&ui->ui_i.ih_mbuf, 0 , sizeof(struct mbuf_ptr)); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 251 | ui->ui_x1 = 0; |
| 252 | ui->ui_pr = IPPROTO_UDP; |
Jan Kiszka | 0d62c4c | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 253 | ui->ui_len = htons(m->m_len - sizeof(struct ip)); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 254 | /* XXXXX Check for from-one-location sockets, or from-any-location sockets */ |
| 255 | ui->ui_src = saddr->sin_addr; |
| 256 | ui->ui_dst = daddr->sin_addr; |
| 257 | ui->ui_sport = saddr->sin_port; |
| 258 | ui->ui_dport = daddr->sin_port; |
| 259 | ui->ui_ulen = ui->ui_len; |
| 260 | |
| 261 | /* |
| 262 | * Stuff checksum and output datagram. |
| 263 | */ |
| 264 | ui->ui_sum = 0; |
Jan Kiszka | 0d62c4c | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 265 | if ((ui->ui_sum = cksum(m, m->m_len)) == 0) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 266 | ui->ui_sum = 0xffff; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 267 | ((struct ip *)ui)->ip_len = m->m_len; |
| 268 | |
blueswir1 | 9634d90 | 2007-10-26 19:01:16 +0000 | [diff] [blame] | 269 | ((struct ip *)ui)->ip_ttl = IPDEFTTL; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 270 | ((struct ip *)ui)->ip_tos = iptos; |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 271 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 272 | error = ip_output(so, m); |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 273 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 274 | return (error); |
| 275 | } |
| 276 | |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 277 | int udp_output(struct socket *so, struct mbuf *m, |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 278 | struct sockaddr_in *addr) |
| 279 | |
| 280 | { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 281 | Slirp *slirp = so->slirp; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 282 | struct sockaddr_in saddr, daddr; |
| 283 | |
| 284 | saddr = *addr; |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 285 | if ((so->so_faddr.s_addr & slirp->vnetwork_mask.s_addr) == |
| 286 | slirp->vnetwork_addr.s_addr) { |
| 287 | uint32_t inv_mask = ~slirp->vnetwork_mask.s_addr; |
| 288 | |
| 289 | if ((so->so_faddr.s_addr & inv_mask) == inv_mask) { |
| 290 | saddr.sin_addr = slirp->vhost_addr; |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 291 | } else if (addr->sin_addr.s_addr == loopback_addr.s_addr || |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 292 | so->so_faddr.s_addr != slirp->vhost_addr.s_addr) { |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 293 | saddr.sin_addr = so->so_faddr; |
| 294 | } |
bellard | c904d61 | 2006-05-03 20:53:46 +0000 | [diff] [blame] | 295 | } |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 296 | daddr.sin_addr = so->so_laddr; |
| 297 | daddr.sin_port = so->so_lport; |
ths | 3b46e62 | 2007-09-17 08:09:54 +0000 | [diff] [blame] | 298 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 299 | return udp_output2(so, m, &saddr, &daddr, so->so_iptos); |
| 300 | } |
| 301 | |
| 302 | int |
blueswir1 | aeed97c | 2009-04-18 07:32:41 +0000 | [diff] [blame] | 303 | udp_attach(struct socket *so) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 304 | { |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 305 | if((so->s = qemu_socket(AF_INET,SOCK_DGRAM,0)) != -1) { |
Ed Swierk | 97df1ee | 2009-07-22 17:53:15 -0700 | [diff] [blame] | 306 | so->so_expire = curtime + SO_EXPIRE; |
| 307 | insque(so, &so->slirp->udb); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 308 | } |
| 309 | return(so->s); |
| 310 | } |
| 311 | |
| 312 | void |
blueswir1 | aeed97c | 2009-04-18 07:32:41 +0000 | [diff] [blame] | 313 | udp_detach(struct socket *so) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 314 | { |
bellard | 379ff53 | 2004-07-12 22:33:07 +0000 | [diff] [blame] | 315 | closesocket(so->s); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 316 | sofree(so); |
| 317 | } |
| 318 | |
blueswir1 | 9634d90 | 2007-10-26 19:01:16 +0000 | [diff] [blame] | 319 | static const struct tos_t udptos[] = { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 320 | {0, 53, IPTOS_LOWDELAY, 0}, /* DNS */ |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 321 | {0, 0, 0, 0} |
| 322 | }; |
| 323 | |
Stefan Weil | b6dce92 | 2010-07-22 22:15:23 +0200 | [diff] [blame] | 324 | static uint8_t |
blueswir1 | 9634d90 | 2007-10-26 19:01:16 +0000 | [diff] [blame] | 325 | udp_tos(struct socket *so) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 326 | { |
| 327 | int i = 0; |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 328 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 329 | while(udptos[i].tos) { |
| 330 | if ((udptos[i].fport && ntohs(so->so_fport) == udptos[i].fport) || |
| 331 | (udptos[i].lport && ntohs(so->so_lport) == udptos[i].lport)) { |
| 332 | so->so_emu = udptos[i].emu; |
| 333 | return udptos[i].tos; |
| 334 | } |
| 335 | i++; |
| 336 | } |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 337 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 338 | return 0; |
| 339 | } |
| 340 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 341 | struct socket * |
Stefan Weil | b6dce92 | 2010-07-22 22:15:23 +0200 | [diff] [blame] | 342 | udp_listen(Slirp *slirp, uint32_t haddr, u_int hport, uint32_t laddr, |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 343 | u_int lport, int flags) |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 344 | { |
| 345 | struct sockaddr_in addr; |
| 346 | struct socket *so; |
balrog | 242acf3 | 2008-05-10 01:49:53 +0000 | [diff] [blame] | 347 | socklen_t addrlen = sizeof(struct sockaddr_in), opt = 1; |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 348 | |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 349 | so = socreate(slirp); |
| 350 | if (!so) { |
| 351 | return NULL; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 352 | } |
Kevin Wolf | 40ff6d7 | 2009-12-02 12:24:42 +0100 | [diff] [blame] | 353 | so->s = qemu_socket(AF_INET,SOCK_DGRAM,0); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 354 | so->so_expire = curtime + SO_EXPIRE; |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 355 | insque(so, &slirp->udb); |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 356 | |
| 357 | addr.sin_family = AF_INET; |
Jan Kiszka | 3c6a058 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 358 | addr.sin_addr.s_addr = haddr; |
| 359 | addr.sin_port = hport; |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 360 | |
| 361 | if (bind(so->s,(struct sockaddr *)&addr, addrlen) < 0) { |
| 362 | udp_detach(so); |
| 363 | return NULL; |
| 364 | } |
| 365 | setsockopt(so->s,SOL_SOCKET,SO_REUSEADDR,(char *)&opt,sizeof(int)); |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 366 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 367 | getsockname(so->s,(struct sockaddr *)&addr,&addrlen); |
| 368 | so->so_fport = addr.sin_port; |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 369 | if (addr.sin_addr.s_addr == 0 || |
| 370 | addr.sin_addr.s_addr == loopback_addr.s_addr) { |
Jan Kiszka | 460fec6 | 2009-06-24 14:42:31 +0200 | [diff] [blame] | 371 | so->so_faddr = slirp->vhost_addr; |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 372 | } else { |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 373 | so->so_faddr = addr.sin_addr; |
Jan Kiszka | a13a412 | 2009-06-24 14:42:28 +0200 | [diff] [blame] | 374 | } |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 375 | so->so_lport = lport; |
| 376 | so->so_laddr.s_addr = laddr; |
| 377 | if (flags != SS_FACCEPTONCE) |
| 378 | so->so_expire = 0; |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 379 | |
Jan Kiszka | f932b6c | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 380 | so->so_state &= SS_PERSISTENT_MASK; |
Jan Kiszka | 6dd5ffb | 2009-06-24 14:42:29 +0200 | [diff] [blame] | 381 | so->so_state |= SS_ISFCONNECTED | flags; |
ths | 5fafdf2 | 2007-09-16 21:08:06 +0000 | [diff] [blame] | 382 | |
bellard | f0cbd3e | 2004-04-22 00:10:48 +0000 | [diff] [blame] | 383 | return so; |
| 384 | } |