text: /*
   *------------------------------------------------------------------
   * sr_api.c - ipv6 segment routing api
   *
   * 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 <vnet/vnet.h>
  #include <vnet/srv6/sr.h>
  #include <vlibmemory/api.h>
  
  #include <vnet/interface.h>
  #include <vnet/api_errno.h>
  #include <vnet/feature/feature.h>
  #include <vnet/fib/fib_table.h>
  
  #include <vnet/vnet_msg_enum.h>
  
  #define vl_typedefs		/* define message structures */
  #include <vnet/vnet_all_api_h.h>
  #undef vl_typedefs
  
  #define vl_endianfun		/* define message structures */
  #include <vnet/vnet_all_api_h.h>
  #undef vl_endianfun
  
  /* instantiate all the print functions we know about */
  #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
  #define vl_printfun
  #include <vnet/vnet_all_api_h.h>
  #undef vl_printfun
  
  #include <vlibapi/api_helper_macros.h>
  
  #define foreach_vpe_api_msg                             \
  _(SR_LOCALSID_ADD_DEL, sr_localsid_add_del)             \
  _(SR_POLICY_ADD, sr_policy_add)                         \
  _(SR_POLICY_MOD, sr_policy_mod)                         \
  _(SR_POLICY_DEL, sr_policy_del)                         \
  _(SR_STEERING_ADD_DEL, sr_steering_add_del)             \
  _(SR_SET_ENCAP_SOURCE, sr_set_encap_source)             \
  _(SR_SET_ENCAP_HOP_LIMIT, sr_set_encap_hop_limit)       \
  _(SR_LOCALSIDS_DUMP, sr_localsids_dump)                 \
  _(SR_POLICIES_DUMP, sr_policies_dump)                   \
  _(SR_STEERING_POL_DUMP, sr_steering_pol_dump)
  
  static void vl_api_sr_localsid_add_del_t_handler
    (vl_api_sr_localsid_add_del_t * mp)
  {
    vl_api_sr_localsid_add_del_reply_t *rmp;
    int rv = 0;
  /*
   * int sr_cli_localsid (char is_del, ip6_address_t *localsid_addr,
   *  char end_psp, u8 behavior, u32 sw_if_index, u32 vlan_index, u32 fib_table,
   *  ip46_address_t *nh_addr, void *ls_plugin_mem)
   */
    if (mp->behavior == SR_BEHAVIOR_X ||
        mp->behavior == SR_BEHAVIOR_DX6 ||
        mp->behavior == SR_BEHAVIOR_DX4 || mp->behavior == SR_BEHAVIOR_DX2)
      VALIDATE_SW_IF_INDEX (mp);
  
    ip46_address_t prefix;
  
    clib_memset (&prefix, 0, sizeof (ip46_address_t));
    if ((mp->nh_addr4[0] | mp->nh_addr4[1] | mp->
         nh_addr4[2] | mp->nh_addr4[3]) != 0)
      memcpy (&prefix.ip4, mp->nh_addr4, sizeof (prefix.ip4));
    else
      memcpy (&prefix.ip6, mp->nh_addr6, sizeof (prefix.ip6));
  
    rv = sr_cli_localsid (mp->is_del,
  			(ip6_address_t *) & mp->localsid, 128,
  			mp->end_psp,
  			mp->behavior,
  			ntohl (mp->sw_if_index),
  			ntohl (mp->vlan_index),
  			ntohl (mp->fib_table), &prefix, NULL);
  
    BAD_SW_IF_INDEX_LABEL;
    REPLY_MACRO (VL_API_SR_LOCALSID_ADD_DEL_REPLY);
  }
  
  static void
  vl_api_sr_policy_add_t_handler (vl_api_sr_policy_add_t * mp)
  {
    vl_api_sr_policy_add_reply_t *rmp;
    ip6_address_t *segments = 0, *seg;
    ip6_address_t *this_address = (ip6_address_t *) mp->sids.sids;
  
    int i;
    for (i = 0; i < mp->sids.num_sids; i++)
      {
        vec_add2 (segments, seg, 1);
        clib_memcpy (seg->as_u8, this_address->as_u8, sizeof (*this_address));
        this_address++;
      }
  
  /*
   * sr_policy_add (ip6_address_t *bsid, ip6_address_t *segments,
   *                u32 weight, u8 behavior, u32 fib_table, u8 is_encap,
   *                u16 behavior, void *plugin_mem)
   */
    int rv = 0;
    rv = sr_policy_add ((ip6_address_t *) & mp->bsid_addr,
  		      segments,
  		      ntohl (mp->sids.weight),
  		      mp->type, ntohl (mp->fib_table), mp->is_encap, 0, NULL);
    vec_free (segments);
  
    REPLY_MACRO (VL_API_SR_POLICY_ADD_REPLY);
  }
  
  static void
  vl_api_sr_policy_mod_t_handler (vl_api_sr_policy_mod_t * mp)
  {
    vl_api_sr_policy_mod_reply_t *rmp;
  
    ip6_address_t *segments = 0, *seg;
    ip6_address_t *this_address = (ip6_address_t *) mp->sids.sids;
  
    int i;
    for (i = 0; i < mp->sids.num_sids; i++)
      {
        vec_add2 (segments, seg, 1);
        clib_memcpy (seg->as_u8, this_address->as_u8, sizeof (*this_address));
        this_address++;
      }
  
    int rv = 0;
  /*
   * int
   * sr_policy_mod(ip6_address_t *bsid, u32 index, u32 fib_table,
   *               u8 operation, ip6_address_t *segments, u32 sl_index,
   *               u32 weight, u8 is_encap)
   */
    rv = sr_policy_mod ((ip6_address_t *) & mp->bsid_addr,
  		      ntohl (mp->sr_policy_index),
  		      ntohl (mp->fib_table),
  		      mp->operation,
  		      segments, ntohl (mp->sl_index),
  		      ntohl (mp->sids.weight));
    vec_free (segments);
  
    REPLY_MACRO (VL_API_SR_POLICY_MOD_REPLY);
  }
  
  static void
  vl_api_sr_policy_del_t_handler (vl_api_sr_policy_del_t * mp)
  {
    vl_api_sr_policy_del_reply_t *rmp;
    int rv = 0;
  /*
   * int
   * sr_policy_del (ip6_address_t *bsid, u32 index)
   */
    rv = sr_policy_del ((ip6_address_t *) & mp->bsid_addr,
  		      ntohl (mp->sr_policy_index));
  
    REPLY_MACRO (VL_API_SR_POLICY_DEL_REPLY);
  }
  
  static void
  vl_api_sr_set_encap_source_t_handler (vl_api_sr_set_encap_source_t * mp)
  {
    vl_api_sr_set_encap_source_reply_t *rmp;
    int rv = 0;
    sr_set_source ((ip6_address_t *) & mp->encaps_source);
  
    REPLY_MACRO (VL_API_SR_SET_ENCAP_SOURCE_REPLY);
  }
  
  static void
  vl_api_sr_set_encap_hop_limit_t_handler (vl_api_sr_set_encap_hop_limit_t * mp)
  {
    vl_api_sr_set_encap_hop_limit_reply_t *rmp;
    int rv = 0;
  
    if (mp->hop_limit == 0)
      rv = VNET_API_ERROR_INVALID_VALUE;
    else
      sr_set_hop_limit (mp->hop_limit);
  
    REPLY_MACRO (VL_API_SR_SET_ENCAP_HOP_LIMIT_REPLY);
  }
  
  static void vl_api_sr_steering_add_del_t_handler
    (vl_api_sr_steering_add_del_t * mp)
  {
    vl_api_sr_steering_add_del_reply_t *rmp;
    int rv = 0;
  /*
   * int
   * sr_steering_policy(int is_del, ip6_address_t *bsid, u32 sr_policy_index,
   *  u32 table_id, ip46_address_t *prefix, u32 mask_width, u32 sw_if_index,
   *  u8 traffic_type)
   */
    if (mp->traffic_type == SR_STEER_L2)
      VALIDATE_SW_IF_INDEX (mp);
  
    rv = sr_steering_policy (mp->is_del,
  			   (ip6_address_t *) & mp->bsid_addr,
  			   ntohl (mp->sr_policy_index),
  			   ntohl (mp->table_id),
  			   (ip46_address_t *) & mp->prefix_addr,
  			   ntohl (mp->mask_width),
  			   ntohl (mp->sw_if_index), mp->traffic_type);
  
    BAD_SW_IF_INDEX_LABEL;
    REPLY_MACRO (VL_API_SR_STEERING_ADD_DEL_REPLY);
  }
  
  static void send_sr_localsid_details
    (ip6_sr_localsid_t * t, vl_api_registration_t * reg, u32 context)
  {
    vl_api_sr_localsids_details_t *rmp;
  
    rmp = vl_msg_api_alloc (sizeof (*rmp));
    clib_memset (rmp, 0, sizeof (*rmp));
    rmp->_vl_msg_id = ntohs (VL_API_SR_LOCALSIDS_DETAILS);
    clib_memcpy (rmp->addr.addr, &t->localsid, sizeof (ip6_address_t));
    rmp->end_psp = t->end_psp;
    rmp->behavior = htons (t->behavior);
    rmp->fib_table = htonl (t->fib_table);
    rmp->vlan_index = htonl (t->vlan_index);
    if (ip46_address_is_ip4 (&t->next_hop))
      clib_memcpy (rmp->xconnect_nh_addr4, &t->next_hop.ip4,
  		 sizeof (ip4_address_t));
    else
      clib_memcpy (rmp->xconnect_nh_addr6, &t->next_hop.ip6,
  		 sizeof (ip6_address_t));
  
    if (t->behavior == SR_BEHAVIOR_T || t->behavior == SR_BEHAVIOR_DT6)
      rmp->xconnect_iface_or_vrf_table =
        htonl (fib_table_get_table_id (t->sw_if_index, FIB_PROTOCOL_IP6));
    else if (t->behavior == SR_BEHAVIOR_DT4)
      rmp->xconnect_iface_or_vrf_table =
        htonl (fib_table_get_table_id (t->sw_if_index, FIB_PROTOCOL_IP4));
    else
      rmp->xconnect_iface_or_vrf_table = htonl (t->sw_if_index);
  
    rmp->context = context;
  
    vl_api_send_msg (reg, (u8 *) rmp);
  }
  
  static void vl_api_sr_localsids_dump_t_handler
    (vl_api_sr_localsids_dump_t * mp)
  {
    vl_api_registration_t *reg;
    ip6_sr_main_t *sm = &sr_main;
    ip6_sr_localsid_t *t;
  
    reg = vl_api_client_index_to_registration (mp->client_index);
    if (!reg)
      return;
  
    /* *INDENT-OFF* */
    pool_foreach (t, sm->localsids,
    ({
      send_sr_localsid_details(t, reg, mp->context);
    }));
    /* *INDENT-ON* */
  }
  
  static void send_sr_policies_details
    (ip6_sr_policy_t * t, vl_api_registration_t * reg, u32 context)
  {
    vl_api_sr_policies_details_t *rmp;
    ip6_sr_main_t *sm = &sr_main;
  
    u32 *sl_index;
    ip6_sr_sl_t *segment_list = 0;
    vl_api_srv6_sid_list_t *write_sid_list;
  
    rmp = vl_msg_api_alloc (sizeof (*rmp) +
  			  vec_len (t->segments_lists) *
  			  sizeof (vl_api_srv6_sid_list_t));
    clib_memset (rmp, 0,
  	       (sizeof (*rmp) +
  		vec_len (t->segments_lists) *
  		sizeof (vl_api_srv6_sid_list_t)));
  
    rmp->_vl_msg_id = ntohs (VL_API_SR_POLICIES_DETAILS);
    clib_memcpy (rmp->bsid.addr, &t->bsid, sizeof (ip6_address_t));
    rmp->is_encap = t->is_encap;
    rmp->type = t->type;
    rmp->fib_table = htonl (t->fib_table);
    rmp->num_sid_lists = vec_len (t->segments_lists);
  
    /* Fill in all the segments lists */
    vec_foreach (sl_index, t->segments_lists)
    {
      segment_list = pool_elt_at_index (sm->sid_lists, *sl_index);
      write_sid_list = &rmp->sid_lists[sl_index - t->segments_lists];
      write_sid_list->num_sids = vec_len (segment_list->segments);
      write_sid_list->weight = htonl (segment_list->weight);
      clib_memcpy (write_sid_list->sids, segment_list->segments,
  		 vec_len (segment_list->segments) * sizeof (ip6_address_t));
    }
  
    rmp->context = context;
    vl_api_send_msg (reg, (u8 *) rmp);
  }
  
  static void
  vl_api_sr_policies_dump_t_handler (vl_api_sr_policies_dump_t * mp)
  {
    vl_api_registration_t *reg;
    ip6_sr_main_t *sm = &sr_main;
    ip6_sr_policy_t *t;
  
    reg = vl_api_client_index_to_registration (mp->client_index);
    if (!reg)
      return;
  
    /* *INDENT-OFF* */
    pool_foreach (t, sm->sr_policies,
    ({
      send_sr_policies_details(t, reg, mp->context);
    }));
    /* *INDENT-ON* */
  }
  
  static void send_sr_steering_pol_details
    (ip6_sr_steering_policy_t * t, vl_api_registration_t * reg, u32 context)
  {
    vl_api_sr_steering_pol_details_t *rmp;
    ip6_sr_main_t *sm = &sr_main;
  
    rmp = vl_msg_api_alloc (sizeof (*rmp));
    clib_memset (rmp, 0, sizeof (*rmp));
    rmp->_vl_msg_id = ntohs (VL_API_SR_STEERING_POL_DETAILS);
  
    //Get the SR policy BSID
    ip6_sr_policy_t *p;
    p = pool_elt_at_index (sm->sr_policies, t->sr_policy);
    clib_memcpy (rmp->bsid.addr, &p->bsid, sizeof (ip6_address_t));
  
    //Get the steering
    rmp->traffic_type = t->classify.traffic_type;
    rmp->fib_table = htonl (t->classify.l3.fib_table);
    rmp->mask_width = htonl (t->classify.l3.mask_width);
    if (ip46_address_is_ip4 (&t->classify.l3.prefix))
      clib_memcpy (rmp->prefix_addr, &t->classify.l3.prefix.ip4,
  		 sizeof (ip4_address_t));
    else
      clib_memcpy (rmp->prefix_addr, &t->classify.l3.prefix.ip6,
  		 sizeof (ip6_address_t));
  
    rmp->sw_if_index = htonl (t->classify.l2.sw_if_index);
  
    rmp->context = context;
    vl_api_send_msg (reg, (u8 *) rmp);
  }
  
  static void vl_api_sr_steering_pol_dump_t_handler
    (vl_api_sr_policies_dump_t * mp)
  {
    vl_api_registration_t *reg;
    ip6_sr_main_t *sm = &sr_main;
    ip6_sr_steering_policy_t *t;
  
    reg = vl_api_client_index_to_registration (mp->client_index);
    if (!reg)
      return;
  
    /* *INDENT-OFF* */
    pool_foreach (t, sm->steer_policies,
    ({
      send_sr_steering_pol_details(t, reg, mp->context);
    }));
    /* *INDENT-ON* */
  }
  
  /*
   * sr_api_hookup
   * Add vpe's API message handlers to the table.
   * vlib has already mapped shared memory and
   * added the client registration handlers.
   * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
   */
  #define vl_msg_name_crc_list
  #include <vnet/vnet_all_api_h.h>
  #undef vl_msg_name_crc_list
  
  static void
  setup_message_id_table (api_main_t * am)
  {
  #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
    foreach_vl_msg_name_crc_sr;
  #undef _
  }
  
  static clib_error_t *
  sr_api_hookup (vlib_main_t * vm)
  {
    api_main_t *am = vlibapi_get_main ();
  
  #define _(N,n)                                                  \
      vl_msg_api_set_handlers(VL_API_##N, #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_msg;
  #undef _
  
    /*
     * Set up the (msg_name, crc, message-id) table
     */
    setup_message_id_table (am);
  
    return 0;
  }
  
  VLIB_API_INIT_FUNCTION (sr_api_hookup);
  
  /*
   * fd.io coding-style-patch-verification: ON
   *
   * Local Variables:
   * eval: (c-set-style "gnu")
   * End:
   */
  