void dp_parse_ip (struct dp_handle * handle, const dp_header * header, const u_char * packet)
{
const struct ip * ip = (struct ip *) packet;
if (DP_DEBUG)
{
fprintf(stdout, "Looking at packet with length %ud\n", header->len);
}
u_char * payload = (u_char *) packet + sizeof (struct ip);
if (handle->callback[dp_packet_ip] != NULL)
{
int done = (handle->callback[dp_packet_ip])
(handle->userdata, header, packet);
if (done)
return;
}
switch (ip->ip_p)
{
case (6):
dp_parse_tcp (handle, header, payload);
break;
default:
// TODO: maybe support for non-tcp IP packets
break;
}
}
void dp_parse_ip6(struct dp_handle *handle, const dp_header *header,
const u_char *packet) {
const struct ip6_hdr *ip6 = (struct ip6_hdr *)packet;
u_char *payload = (u_char *)packet + sizeof(struct ip6_hdr);
if (handle->callback[dp_packet_ip6] != NULL) {
int done =
(handle->callback[dp_packet_ip6])(handle->userdata, header, packet);
if (done)
return;
}
switch ((ip6->ip6_ctlun).ip6_un1.ip6_un1_nxt) {
case IPPROTO_TCP:
dp_parse_tcp(handle, header, payload);
break;
default:
// TODO: maybe support for non-tcp ipv6 packets
break;
}
}
