text: /*
   * Copyright (c) 2016 Cisco and/or its affiliates.
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at:
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #include <vat/vat.h>
  #include <vlibapi/api.h>
  #include <vlibmemory/api.h>
  
  #include <vppinfra/error.h>
  #include <lb/lb.h>
  
  #define __plugin_msg_base lb_test_main.msg_id_base
  #include <vlibapi/vat_helper_macros.h>
  
  //TODO: Move that to vat/plugin_api.c
  //////////////////////////
  uword unformat_ip46_address (unformat_input_t * input, va_list * args)
  {
    ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
    ip46_type_t type = va_arg (*args, ip46_type_t);
    if ((type != IP46_TYPE_IP6) &&
        unformat(input, "%U", unformat_ip4_address, &ip46->ip4)) {
      ip46_address_mask_ip4(ip46);
      return 1;
    } else if ((type != IP46_TYPE_IP4) &&
        unformat(input, "%U", unformat_ip6_address, &ip46->ip6)) {
      return 1;
    }
    return 0;
  }
  uword unformat_ip46_prefix (unformat_input_t * input, va_list * args)
  {
    ip46_address_t *ip46 = va_arg (*args, ip46_address_t *);
    u8 *len = va_arg (*args, u8 *);
    ip46_type_t type = va_arg (*args, ip46_type_t);
  
    u32 l;
    if ((type != IP46_TYPE_IP6) && unformat(input, "%U/%u", unformat_ip4_address, &ip46->ip4, &l)) {
      if (l > 32)
        return 0;
      *len = l + 96;
      ip46->pad[0] = ip46->pad[1] = ip46->pad[2] = 0;
    } else if ((type != IP46_TYPE_IP4) && unformat(input, "%U/%u", unformat_ip6_address, &ip46->ip6, &l)) {
      if (l > 128)
        return 0;
      *len = l;
    } else {
      return 0;
    }
    return 1;
  }
  /////////////////////////
  
  #define vl_msg_id(n,h) n,
  typedef enum {
  #include <lb/lb.api.h>
      /* We'll want to know how many messages IDs we need... */
      VL_MSG_FIRST_AVAILABLE,
  } vl_msg_id_t;
  #undef vl_msg_id
  
  /* define message structures */
  #define vl_typedefs
  #include <lb/lb.api.h>
  #undef vl_typedefs
  
  /* declare message handlers for each api */
  
  #define vl_endianfun             /* define message structures */
  #include <lb/lb.api.h>
  #undef vl_endianfun
  
  /* instantiate all the print functions we know about */
  #define vl_print(handle, ...)
  #define vl_printfun
  #include <lb/lb.api.h>
  #undef vl_printfun
  
  /* Get the API version number. */
  #define vl_api_version(n,v) static u32 api_version=(v);
  #include <lb/lb.api.h>
  #undef vl_api_version
  
  typedef struct {
      /* API message ID base */
      u16 msg_id_base;
      vat_main_t *vat_main;
  } lb_test_main_t;
  
  lb_test_main_t lb_test_main;
  
  #define foreach_standard_reply_retval_handler   \
  _(lb_conf_reply)                 \
  _(lb_add_del_vip_reply)          \
  _(lb_add_del_as_reply)
  
  #define _(n)                                            \
      static void vl_api_##n##_t_handler                  \
      (vl_api_##n##_t * mp)                               \
      {                                                   \
          vat_main_t * vam = lb_test_main.vat_main;   \
          i32 retval = ntohl(mp->retval);                 \
          if (vam->async_mode) {                          \
              vam->async_errors += (retval < 0);          \
          } else {                                        \
              vam->retval = retval;                       \
              vam->result_ready = 1;                      \
          }                                               \
      }
  foreach_standard_reply_retval_handler;
  #undef _
  
  /*
   * Table of message reply handlers, must include boilerplate handlers
   * we just generated
   */
  #define foreach_vpe_api_reply_msg                               \
    _(LB_CONF_REPLY, lb_conf_reply)                                     \
    _(LB_ADD_DEL_VIP_REPLY, lb_add_del_vip_reply)                       \
    _(LB_ADD_DEL_AS_REPLY, lb_add_del_as_reply)
  
  static int api_lb_conf (vat_main_t * vam)
  {
    unformat_input_t *i = vam->input;
    vl_api_lb_conf_t mps, *mp;
    int ret;
  
    if (!unformat(i, "%U %U %u %u",
                 unformat_ip4_address, &mps.ip4_src_address,
                 unformat_ip6_address, mps.ip6_src_address,
                 &mps.sticky_buckets_per_core,
                 &mps.flow_timeout)) {
      errmsg ("invalid arguments\n");
      return -99;
    }
  
    M(LB_CONF, mp);
    S(mp);
    W (ret);
    return ret;
  }
  
  static int api_lb_add_del_vip (vat_main_t * vam)
  {
    unformat_input_t * i = vam->input;
    vl_api_lb_add_del_vip_t mps, *mp;
    int ret;
    mps.is_del = 0;
    mps.is_gre4 = 0;
  
    if (!unformat(i, "%U",
                  unformat_ip46_prefix, mps.ip_prefix, &mps.prefix_length, IP46_TYPE_ANY)) {
      errmsg ("invalid prefix\n");
      return -99;
    }
  
    if (unformat(i, "gre4")) {
      mps.is_gre4 = 1;
    } else if (unformat(i, "gre6")) {
      mps.is_gre4 = 0;
    } else {
      errmsg ("no encap\n");
      return -99;
    }
  
    if (!unformat(i, "%d", &mps.new_flows_table_length)) {
      errmsg ("no table lentgh\n");
      return -99;
    }
  
    if (unformat(i, "del")) {
      mps.is_del = 1;
    }
  
    M(LB_ADD_DEL_VIP, mp);
    S(mp);
    W (ret);
    return ret;
  }
  
  static int api_lb_add_del_as (vat_main_t * vam)
  {
    unformat_input_t * i = vam->input;
    vl_api_lb_add_del_as_t mps, *mp;
    int ret;
    mps.is_del = 0;
  
    if (!unformat(i, "%U %U",
                  unformat_ip46_prefix, mps.vip_ip_prefix, &mps.vip_prefix_length, IP46_TYPE_ANY,
                  unformat_ip46_address, mps.as_address)) {
      errmsg ("invalid prefix or address\n");
      return -99;
    }
  
    if (unformat(i, "del")) {
      mps.is_del = 1;
    }
  
    M(LB_ADD_DEL_AS, mp);
    S(mp);
    W (ret);
    return ret;
  }
  
  /*
   * List of messages that the api test plugin sends,
   * and that the data plane plugin processes
   */
  #define foreach_vpe_api_msg                             \
  _(lb_conf, "<ip4-src-addr> <ip6-src-address> <sticky_buckets_per_core> <flow_timeout>") \
  _(lb_add_del_vip, "<ip-prefix> [gre4|gre6] <new_table_len> [del]") \
  _(lb_add_del_as, "<vip-ip-prefix> <address> [del]")
  
  static void 
  lb_vat_api_hookup (vat_main_t *vam)
  {
    lb_test_main_t * lbtm = &lb_test_main;
    /* Hook up handlers for replies from the data plane plug-in */
  #define _(N,n)                                                  \
    vl_msg_api_set_handlers((VL_API_##N + lbtm->msg_id_base),       \
                            #n,                                   \
                            vl_api_##n##_t_handler,               \
                            vl_noop_handler,                      \
                            vl_api_##n##_t_endian,                \
                            vl_api_##n##_t_print,                 \
                            sizeof(vl_api_##n##_t), 1);
    foreach_vpe_api_reply_msg;
  #undef _
  
    /* API messages we can send */
  #define _(n,h) hash_set_mem (vam->function_by_name, #n, api_##n);
    foreach_vpe_api_msg;
  #undef _
  
    /* Help strings */
  #define _(n,h) hash_set_mem (vam->help_by_name, #n, h);
    foreach_vpe_api_msg;
  #undef _
  }
  
  clib_error_t * vat_plugin_register (vat_main_t *vam)
  {
    lb_test_main_t * lbtm = &lb_test_main;
  
    u8 * name;
  
    lbtm->vat_main = vam;
  
    /* Ask the vpp engine for the first assigned message-id */
    name = format (0, "lb_%08x%c", api_version, 0);
    lbtm->msg_id_base = vl_client_get_first_plugin_msg_id ((char *) name);
  
    if (lbtm->msg_id_base != (u16) ~0)
      lb_vat_api_hookup (vam);
  
    vec_free(name);
  
    return 0;
  }
  