int tun_rtr_process_input_packet(struct sock *sl) { packet_tuple_t tpl; lbuf_use_stack(&pkt_buf, &pkt_recv_buf, MAX_IP_PKT_LEN); /* Reserve space in case the received packet was IPv6. In this case the IPv6 header is * not provided */ lbuf_reserve(&pkt_buf,LBUF_STACK_OFFSET); if (tun_read_and_decap_pkt(sl->fd, &pkt_buf, &(tpl.iid)) != GOOD) { return (BAD); } OOR_LOG(LDBG_3, "Forwarding packet to OUPUT for re-encapsulation"); lbuf_point_to_l3(&pkt_buf); lbuf_reset_ip(&pkt_buf); if (pkt_parse_5_tuple(&pkt_buf, &tpl) != GOOD) { return (BAD); } tun_output(&pkt_buf, &tpl); return(GOOD); }
int vpnapi_output(lbuf_t *b) { packet_tuple_t tpl; if (pkt_parse_5_tuple(b, &tpl) != GOOD) { return (BAD); } LMLOG(LDBG_3,"OUTPUT: Received EID %s -> %s, Proto: %d, Port: %d -> %d ", lisp_addr_to_char(&tpl.src_addr), lisp_addr_to_char(&tpl.dst_addr), tpl.protocol, tpl.src_port, tpl.dst_port); /* If already LISP packet, do not encapsulate again */ if (is_lisp_packet(&tpl)) { LMLOG(LDBG_3,"OUTPUT: Is a lisp packet, do not encapsulate again"); return (vpnapi_forward_native(b, &tpl.dst_addr)); } vpnapi_output_unicast(b, &tpl); return(GOOD); }