extras/vom/vom/interface_factory.cpp

   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 #include <boost/algorithm/string.hpp>
  17
  18 #include "vom/bond_interface.hpp"
  19 #include "vom/bond_member.hpp"
  20 #include "vom/interface_factory.hpp"
  21 #include "vom/sub_interface.hpp"
  22 #include "vom/tap_interface.hpp"
  23
  24 namespace VOM {
  25 std::shared_ptr<interface>
  26 interface_factory::new_interface(const vapi_payload_sw_interface_details& vd)
  27 {
  28   std::shared_ptr<interface> sp;
  29
  30   /**
  31    * Determine the interface type from the name and VLAN attributes
  32    */
  33   std::string name = reinterpret_cast<const char*>(vd.interface_name);
  34   interface::type_t type = interface::type_t::from_string(name);
  35   interface::admin_state_t state =
  36     interface::admin_state_t::from_int(vd.admin_up_down);
  37   handle_t hdl(vd.sw_if_index);
  38   l2_address_t l2_address(vd.l2_address, vd.l2_address_length);
  39   std::string tag = "";
  40
  41   if (interface::type_t::UNKNOWN == type) {
  42     return sp;
  43   }
  44
  45   sp = interface::find(hdl);
  46   if (sp) {
  47     sp->set(state);
  48     sp->set(l2_address);
  49     if (!tag.empty())
  50       sp->set(tag);
  51     return sp;
  52   }
  53
  54   /*
  55    * If here, Fall back to old routine
  56    */
  57   if (interface::type_t::AFPACKET == type) {
  58     /*
  59      * need to strip VPP's "host-" prefix from the interface name
  60      */
  61     name = name.substr(5);
  62   }
  63   /**
  64    * if the tag is set, then we wrote that to specify a name to make
  65    * the interface type more specific
  66    */
  67   if (vd.tag[0] != 0) {
  68     tag = std::string(reinterpret_cast<const char*>(vd.tag));
  69   }
  70
  71   if (!tag.empty() && interface::type_t::LOOPBACK == type) {
  72     name = tag;
  73     type = interface::type_t::from_string(name);
  74   }
  75
  76   /*
  77    * pull out the other special cases
  78    */
  79   if (interface::type_t::TAPV2 == type) {
  80     /*
  81      * TAP interfaces
  82      */
  83     sp = interface::find(hdl);
  84     if (sp && !tag.empty())
  85       sp->set(tag);
  86   } else if (interface::type_t::PIPE == type) {
  87     /*
  88      * there's not enough information in a SW interface record to
  89      * construct a pipe. so skip it. They have
  90      * their own dump routines
  91      */
  92   } else if ((name.find(".") != std::string::npos) && (0 != vd.sub_id)) {
  93     /*
  94      * Sub-interface
  95      *   split the name into the parent and VLAN
  96      */
  97     std::vector<std::string> parts;
  98     std::shared_ptr<interface> parent;
  99     boost::split(parts, name, boost::is_any_of("."));
 100
 101     if ((parent = interface::find(parts[0])))
 102       sp = sub_interface(*parent, state, vd.sub_id).singular();
 103     else {
 104       interface parent_itf(parts[0], type, state, tag);
 105       sp = sub_interface(parent_itf, state, vd.sub_id).singular();
 106     }
 107   } else if (interface::type_t::VXLAN == type) {
 108     /*
 109      * there's not enough information in a SW interface record to
 110      * construct a VXLAN tunnel. so skip it. They have
 111      * their own dump routines
 112      */
 113   } else if (interface::type_t::VHOST == type) {
 114     /*
 115      * vhost interface already exist in db, look for it using
 116      * sw_if_index
 117      */
 118   } else if (interface::type_t::BOND == type) {
 119     sp = bond_interface(name, state, l2_address,
 120                         bond_interface::mode_t::UNSPECIFIED)
 121            .singular();
 122   } else {
 123     sp = interface(name, type, state, tag).singular();
 124     sp->set(l2_address);
 125   }
 126
 127   /*
 128    * set the handle on the intterface - N.B. this is the sigluar instance
 129    * not a stack local.
 130    */
 131   if (sp)
 132     sp->set(hdl);
 133
 134   return (sp);
 135 }
 136
 137 std::shared_ptr<interface>
 138 interface_factory::new_vhost_user_interface(
 139   const vapi_payload_sw_interface_vhost_user_details& vd)
 140 {
 141   std::shared_ptr<interface> sp;
 142   std::string name = reinterpret_cast<const char*>(vd.sock_filename);
 143   interface::type_t type = interface::type_t::from_string(name);
 144   handle_t hdl(vd.sw_if_index);
 145
 146   sp = interface(name, type, interface::admin_state_t::DOWN).singular();
 147   sp->set(hdl);
 148   return (sp);
 149 }
 150
 151 std::shared_ptr<interface>
 152 interface_factory::new_af_packet_interface(
 153   const vapi_payload_af_packet_details& vd)
 154 {
 155   std::shared_ptr<interface> sp;
 156   std::string name = reinterpret_cast<const char*>(vd.host_if_name);
 157   handle_t hdl(vd.sw_if_index);
 158
 159   sp =
 160     interface(name, interface::type_t::AFPACKET, interface::admin_state_t::DOWN)
 161       .singular();
 162   sp->set(hdl);
 163   return (sp);
 164 }
 165
 166 std::shared_ptr<tap_interface>
 167 interface_factory::new_tap_interface(
 168   const vapi_payload_sw_interface_tap_v2_details& vd)
 169 {
 170   std::shared_ptr<tap_interface> sp;
 171   handle_t hdl(vd.sw_if_index);
 172   std::string name = reinterpret_cast<const char*>(vd.host_if_name);
 173   route::prefix_t pfx(route::prefix_t::ZERO);
 174   boost::asio::ip::address addr;
 175
 176   if (vd.host_ip4_prefix_len)
 177     pfx =
 178       route::prefix_t(0, (uint8_t*)vd.host_ip4_addr, vd.host_ip4_prefix_len);
 179   else if (vd.host_ip6_prefix_len)
 180     pfx =
 181       route::prefix_t(1, (uint8_t*)vd.host_ip6_addr, vd.host_ip6_prefix_len);
 182
 183   l2_address_t l2_address(vd.host_mac_addr, 6);
 184   sp = tap_interface(name, interface::admin_state_t::UP, pfx, l2_address)
 185          .singular();
 186
 187   sp->set(hdl);
 188
 189   return (sp);
 190 }
 191
 192 std::shared_ptr<bond_interface>
 193 interface_factory::new_bond_interface(
 194   const vapi_payload_sw_interface_bond_details& vd)
 195 {
 196   std::shared_ptr<bond_interface> sp;
 197   std::string name = reinterpret_cast<const char*>(vd.interface_name);
 198   handle_t hdl(vd.sw_if_index);
 199   bond_interface::mode_t mode =
 200     bond_interface::mode_t::from_numeric_val(vd.mode);
 201   bond_interface::lb_t lb = bond_interface::lb_t::from_numeric_val(vd.lb);
 202   sp = bond_interface::find(hdl);
 203   if (sp) {
 204     sp->set(mode);
 205     sp->set(lb);
 206   }
 207   return (sp);
 208 }
 209
 210 bond_member
 211 interface_factory::new_bond_member_interface(
 212   const vapi_payload_sw_interface_slave_details& vd)
 213 {
 214   std::shared_ptr<bond_member> sp;
 215   std::string name = reinterpret_cast<const char*>(vd.interface_name);
 216   handle_t hdl(vd.sw_if_index);
 217   bond_member::mode_t mode =
 218     bond_member::mode_t::from_numeric_val(vd.is_passive);
 219   bond_member::rate_t rate =
 220     bond_member::rate_t::from_numeric_val(vd.is_long_timeout);
 221   std::shared_ptr<interface> itf = interface::find(hdl);
 222   bond_member bm(*itf, mode, rate);
 223   return (bm);
 224 }
 225
 226 std::shared_ptr<pipe>
 227 interface_factory::new_pipe_interface(const vapi_payload_pipe_details& payload)
 228 {
 229   std::shared_ptr<pipe> sp;
 230
 231   handle_t hdl(payload.sw_if_index);
 232   pipe::handle_pair_t hdl_pair(payload.pipe_sw_if_index[0],
 233                                payload.pipe_sw_if_index[1]);
 234
 235   sp = pipe(payload.instance, interface::admin_state_t::UP).singular();
 236
 237   sp->set(hdl);
 238   sp->set_ends(hdl_pair);
 239
 240   return (sp);
 241 }
 242
 243 }; // namespace VOM
 244
 245 /*
 246  * fd.io coding-style-patch-verification: ON
 247  *
 248  * Local Variables:
 249  * eval: (c-set-style "mozilla")
 250  * End:
 251  */