void us_mfa::data_available(raw_socket *sock) {
#ifndef LINUX_NO_MMAP
if (sock->m_mmapped) {
int i = 0;
while (i < MAX_EAT_ONE_CYCLE && *(unsigned long *)sock->m_mmapbuf) {
tpacket_hdr *hdr = (tpacket_hdr *)sock->m_mmapbuf;
sockaddr_ll *sa = (sockaddr_ll *)(((uint8_t *)hdr)
+ TPACKET_ALIGN(sizeof(*hdr)));
uint8_t *bp = ((uint8_t *)hdr) + hdr->tp_mac;
if (sa->sll_protocol == htons(ETH_P_IPV6)
&& sa->sll_pkttype != PACKET_OUTGOING)
handle_ipv6(sa->sll_ifindex, bp, hdr->tp_len);
hdr->tp_status = 0;
sock->m_mmapbuf += sock->m_framesize;
if (sock->m_mmapbuf >= (((uint8_t *)sock->m_mmapped) + sock->m_mmappedlen))
sock->m_mmapbuf = (uint8_t *)sock->m_mmapped;
i++;
}
} else {
#endif
sockaddr_ll sa;
socklen_t salen = sizeof(sa);
int len;
while ((len = g_mrd->ipktb->recvfrom(sock->fd(),
(sockaddr *)&sa, &salen)) > 0) {
if (sa.sll_protocol == htons(ETH_P_IPV6)
&& sa.sll_pkttype != PACKET_OUTGOING)
handle_ipv6(sa.sll_ifindex,
g_mrd->ipktb->buffer(), len);
}
#ifndef LINUX_NO_MMAP
}
#endif
}
void
handle_ip(const struct ip *ip, int len, void *userdata)
{
/* note: ip->ip_v does not work if header is not int-aligned */
/* fprintf(stderr, "IPv %d\n", (*(uint8_t *) ip) >> 4); */
switch ((*(uint8_t *) ip) >> 4) {
case 4:
handle_ipv4(ip, len, userdata);
break;
case 6:
handle_ipv6((struct ip6_hdr *)ip, len, userdata);
break;
default:
break;
}
}
dns_message *
handle_ip(const struct ip * ip, int len)
{
switch(ip->ip_v) {
case 4:
return handle_ipv4(ip, len);
break;
#if USE_IPV6
case 6:
return handle_ipv6((struct ip6_hdr *)ip, len);
break;
#endif
default:
return NULL;
break;
}
}
