Revision 9634d903 slirp/udp.c
| b/slirp/udp.c | ||
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| 51 | 51 |
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struct socket udb; |
| 53 | 53 |
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static u_int8_t udp_tos(struct socket *so); |
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static void udp_emu(struct socket *so, struct mbuf *m); |
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/* |
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* UDP protocol implementation. |
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* Per RFC 768, August, 1980. |
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*/ |
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#ifndef COMPAT_42 |
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int udpcksum = 1;
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#define UDPCKSUM 1
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#else |
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int udpcksum = 0; /* XXX */
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#define UDPCKSUM 0 /* XXX */
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#endif |
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struct socket *udp_last_so = &udb; |
| ... | ... | |
| 132 | 135 |
/* |
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* Checksum extended UDP header and data. |
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*/ |
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if (udpcksum && uh->uh_sum) {
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if (UDPCKSUM && uh->uh_sum) {
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((struct ipovly *)ip)->ih_next = 0; |
| 137 | 140 |
((struct ipovly *)ip)->ih_prev = 0; |
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((struct ipovly *)ip)->ih_x1 = 0; |
| ... | ... | |
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* Stuff checksum and output datagram. |
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*/ |
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ui->ui_sum = 0; |
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if (udpcksum) {
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if (UDPCKSUM) {
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if ((ui->ui_sum = cksum(m, /* sizeof (struct udpiphdr) + */ m->m_len)) == 0) |
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ui->ui_sum = 0xffff; |
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} |
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((struct ip *)ui)->ip_len = m->m_len; |
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((struct ip *)ui)->ip_ttl = ip_defttl;
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((struct ip *)ui)->ip_ttl = IPDEFTTL;
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((struct ip *)ui)->ip_tos = iptos; |
| 303 | 306 |
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STAT(udpstat.udps_opackets++); |
| ... | ... | |
| 369 | 372 |
sofree(so); |
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} |
| 371 | 374 |
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struct tos_t udptos[] = {
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static const struct tos_t udptos[] = {
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{0, 53, IPTOS_LOWDELAY, 0}, /* DNS */
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{517, 517, IPTOS_LOWDELAY, EMU_TALK}, /* talk */
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{518, 518, IPTOS_LOWDELAY, EMU_NTALK}, /* ntalk */
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| ... | ... | |
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{0, 0, 0, 0}
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}; |
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u_int8_t |
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udp_tos(so) |
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struct socket *so; |
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static u_int8_t |
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udp_tos(struct socket *so) |
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{
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int i = 0; |
| 385 | 387 |
|
| ... | ... | |
| 402 | 404 |
/* |
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* Here, talk/ytalk/ntalk requests must be emulated |
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*/ |
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void |
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udp_emu(so, m) |
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struct socket *so; |
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struct mbuf *m; |
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static void |
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udp_emu(struct socket *so, struct mbuf *m) |
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{
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struct sockaddr_in addr; |
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int addrlen = sizeof(addr); |
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