diff options
Diffstat (limited to 'slirp/src/udp6.c')
| -rw-r--r-- | slirp/src/udp6.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/slirp/src/udp6.c b/slirp/src/udp6.c deleted file mode 100644 index bfcc7ec6fa..0000000000 --- a/slirp/src/udp6.c +++ /dev/null @@ -1,173 +0,0 @@ -/* SPDX-License-Identifier: BSD-3-Clause */ -/* - * Copyright (c) 2013 - * Guillaume Subiron - */ - -#include "slirp.h" -#include "udp.h" -#include "dhcpv6.h" - -void udp6_input(struct mbuf *m) -{ - Slirp *slirp = m->slirp; - struct ip6 *ip, save_ip; - struct udphdr *uh; - int iphlen = sizeof(struct ip6); - int len; - struct socket *so; - struct sockaddr_in6 lhost; - - DEBUG_CALL("udp6_input"); - DEBUG_ARG("m = %p", m); - - if (slirp->restricted) { - goto bad; - } - - ip = mtod(m, struct ip6 *); - m->m_len -= iphlen; - m->m_data += iphlen; - uh = mtod(m, struct udphdr *); - m->m_len += iphlen; - m->m_data -= iphlen; - - if (ip6_cksum(m)) { - goto bad; - } - - len = ntohs((uint16_t)uh->uh_ulen); - - /* - * Make mbuf data length reflect UDP length. - * If not enough data to reflect UDP length, drop. - */ - if (ntohs(ip->ip_pl) != len) { - if (len > ntohs(ip->ip_pl)) { - goto bad; - } - m_adj(m, len - ntohs(ip->ip_pl)); - ip->ip_pl = htons(len); - } - - /* - * Save a copy of the IP header in case we want restore it - * for sending an ICMP error message in response. - */ - save_ip = *ip; - - /* Locate pcb for datagram. */ - lhost.sin6_family = AF_INET6; - lhost.sin6_addr = ip->ip_src; - lhost.sin6_port = uh->uh_sport; - - /* handle DHCPv6 */ - if (ntohs(uh->uh_dport) == DHCPV6_SERVER_PORT && - (in6_equal(&ip->ip_dst, &slirp->vhost_addr6) || - in6_dhcp_multicast(&ip->ip_dst))) { - m->m_data += iphlen; - m->m_len -= iphlen; - dhcpv6_input(&lhost, m); - m->m_data -= iphlen; - m->m_len += iphlen; - goto bad; - } - - /* handle TFTP */ - if (ntohs(uh->uh_dport) == TFTP_SERVER && - !memcmp(ip->ip_dst.s6_addr, slirp->vhost_addr6.s6_addr, 16)) { - m->m_data += iphlen; - m->m_len -= iphlen; - tftp_input((struct sockaddr_storage *)&lhost, m); - m->m_data -= iphlen; - m->m_len += iphlen; - goto bad; - } - - so = solookup(&slirp->udp_last_so, &slirp->udb, - (struct sockaddr_storage *) &lhost, NULL); - - if (so == NULL) { - /* If there's no socket for this packet, create one. */ - so = socreate(slirp); - if (udp_attach(so, AF_INET6) == -1) { - DEBUG_MISC(" udp6_attach errno = %d-%s", errno, strerror(errno)); - sofree(so); - goto bad; - } - - /* Setup fields */ - so->so_lfamily = AF_INET6; - so->so_laddr6 = ip->ip_src; - so->so_lport6 = uh->uh_sport; - } - - so->so_ffamily = AF_INET6; - so->so_faddr6 = ip->ip_dst; /* XXX */ - so->so_fport6 = uh->uh_dport; /* XXX */ - - iphlen += sizeof(struct udphdr); - m->m_len -= iphlen; - m->m_data += iphlen; - - /* - * Now we sendto() the packet. - */ - if (sosendto(so, m) == -1) { - m->m_len += iphlen; - m->m_data -= iphlen; - *ip = save_ip; - DEBUG_MISC("udp tx errno = %d-%s", errno, strerror(errno)); - icmp6_send_error(m, ICMP6_UNREACH, ICMP6_UNREACH_NO_ROUTE); - goto bad; - } - - m_free(so->so_m); /* used for ICMP if error on sorecvfrom */ - - /* restore the orig mbuf packet */ - m->m_len += iphlen; - m->m_data -= iphlen; - *ip = save_ip; - so->so_m = m; - - return; -bad: - m_free(m); -} - -int udp6_output(struct socket *so, struct mbuf *m, - struct sockaddr_in6 *saddr, struct sockaddr_in6 *daddr) -{ - struct ip6 *ip; - struct udphdr *uh; - - DEBUG_CALL("udp6_output"); - DEBUG_ARG("so = %p", so); - DEBUG_ARG("m = %p", m); - - /* adjust for header */ - m->m_data -= sizeof(struct udphdr); - m->m_len += sizeof(struct udphdr); - uh = mtod(m, struct udphdr *); - m->m_data -= sizeof(struct ip6); - m->m_len += sizeof(struct ip6); - ip = mtod(m, struct ip6 *); - - /* Build IP header */ - ip->ip_pl = htons(m->m_len - sizeof(struct ip6)); - ip->ip_nh = IPPROTO_UDP; - ip->ip_src = saddr->sin6_addr; - ip->ip_dst = daddr->sin6_addr; - - /* Build UDP header */ - uh->uh_sport = saddr->sin6_port; - uh->uh_dport = daddr->sin6_port; - uh->uh_ulen = ip->ip_pl; - uh->uh_sum = 0; - uh->uh_sum = ip6_cksum(m); - if (uh->uh_sum == 0) { - uh->uh_sum = 0xffff; - } - - return ip6_output(so, m, 0); -} |