src/plugins/ioam/udp-ping/udp_ping_util.h

   1 /*
   2  * Copyright (c) 2017 Cisco and/or its affiliates.
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at:
   6  *
   7  *     http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15
  16 #ifndef PLUGINS_IOAM_PLUGIN_IOAM_UDP_PING_UDP_PING_UTIL_H_
  17 #define PLUGINS_IOAM_PLUGIN_IOAM_UDP_PING_UDP_PING_UTIL_H_
  18
  19 int udp_ping_create_ip6_pak (u8 * buf,  /*u16 len, */
  20                              ip6_address_t src, ip6_address_t dst,
  21                              u16 src_port, u16 dst_port,
  22                              u8 msg_type, u16 ctx);
  23
  24 int
  25 udp_ping_compare_flow (ip46_address_t src, ip46_address_t dst,
  26                        u16 start_src_port, u16 end_src_port,
  27                        u16 start_dst_port, u16 end_dst_port,
  28                        ip46_udp_ping_flow * flow);
  29
  30 void
  31 udp_ping_populate_flow (ip46_address_t src, ip46_address_t dst,
  32                         u16 start_src_port, u16 end_src_port,
  33                         u16 start_dst_port, u16 end_dst_port,
  34                         u16 interval, u8 fault_det,
  35                         ip46_udp_ping_flow * flow);
  36
  37 void udp_ping_free_flow_data (ip46_udp_ping_flow * flow);
  38
  39 void udp_ping_create_rewrite (ip46_udp_ping_flow * flow, u16 ctx);
  40
  41 void udp_ping_send_ip6_pak (vlib_main_t * vm, ip46_udp_ping_flow * flow);
  42
  43 /**
  44  * @brief Create and send ipv6 udp-ping response packet.
  45  *
  46  */
  47 always_inline void
  48 udp_ping_create_reply_from_probe_ip6 (ip6_header_t * ip,
  49                                       ip6_hop_by_hop_header_t * hbh,
  50                                       udp_ping_t * udp)
  51 {
  52   ip6_address_t src;
  53   u16 src_port;
  54   ioam_trace_option_t *trace;
  55
  56   src = ip->src_address;
  57
  58   ip->src_address = ip->dst_address;
  59   ip->dst_address = src;
  60
  61   trace = (ioam_trace_option_t *)
  62     ip6_hbh_get_option (hbh, HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST);
  63   ip6_hbh_ioam_trace_reset_bit (trace, BIT_LOOPBACK);
  64
  65   /* No need of endian transform */
  66   src_port = udp->udp.src_port;
  67
  68   udp->udp.src_port = udp->udp.dst_port;
  69   udp->udp.dst_port = src_port;
  70   udp->udp.checksum = 0;        //FIXME
  71
  72   udp->ping_data.msg_type = UDP_PING_REPLY;
  73 }
  74
  75 #endif /* PLUGINS_IOAM_PLUGIN_IOAM_UDP_PING_UDP_PING_UTIL_H_ */
  76
  77 /*
  78  * fd.io coding-style-patch-verification: ON
  79  *
  80  * Local Variables:
  81  * eval: (c-set-style "gnu")
  82  * End:
  83  */