src/vnet/srv6/sr_api.c

   1 /*
   2  *------------------------------------------------------------------
   3  * sr_api.c - ipv6 segment routing api
   4  *
   5  * Copyright (c) 2016 Cisco and/or its affiliates.
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at:
   9  *
  10  *     http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  *------------------------------------------------------------------
  18  */
  19
  20 #include <vnet/vnet.h>
  21 #include <vnet/srv6/sr.h>
  22 #include <vlibmemory/api.h>
  23
  24 #include <vnet/interface.h>
  25 #include <vnet/api_errno.h>
  26 #include <vnet/feature/feature.h>
  27
  28 #include <vnet/vnet_msg_enum.h>
  29
  30 #define vl_typedefs             /* define message structures */
  31 #include <vnet/vnet_all_api_h.h>
  32 #undef vl_typedefs
  33
  34 #define vl_endianfun            /* define message structures */
  35 #include <vnet/vnet_all_api_h.h>
  36 #undef vl_endianfun
  37
  38 /* instantiate all the print functions we know about */
  39 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
  40 #define vl_printfun
  41 #include <vnet/vnet_all_api_h.h>
  42 #undef vl_printfun
  43
  44 #include <vlibapi/api_helper_macros.h>
  45
  46 #define foreach_vpe_api_msg                             \
  47 _(SR_LOCALSID_ADD_DEL, sr_localsid_add_del)             \
  48 _(SR_POLICY_DEL, sr_policy_del)                         \
  49 _(SR_STEERING_ADD_DEL, sr_steering_add_del)
  50 //_(SR_LOCALSIDS, sr_localsids_dump)
  51 //_(SR_LOCALSID_BEHAVIORS, sr_localsid_behaviors_dump)
  52
  53 static void vl_api_sr_localsid_add_del_t_handler
  54   (vl_api_sr_localsid_add_del_t * mp)
  55 {
  56   vl_api_sr_localsid_add_del_reply_t *rmp;
  57   int rv = 0;
  58 /*
  59  * int sr_cli_localsid (char is_del, ip6_address_t *localsid_addr,
  60  *  char end_psp, u8 behavior, u32 sw_if_index, u32 vlan_index, u32 fib_table,
  61  *  ip46_address_t *nh_addr, void *ls_plugin_mem)
  62  */
  63
  64   VALIDATE_SW_IF_INDEX (mp);
  65
  66   rv = sr_cli_localsid (mp->is_del,
  67                         (ip6_address_t *) & mp->localsid_addr,
  68                         mp->end_psp,
  69                         mp->behavior,
  70                         ntohl (mp->sw_if_index),
  71                         ntohl (mp->vlan_index),
  72                         ntohl (mp->fib_table),
  73                         (ip46_address_t *) & mp->nh_addr, NULL);
  74
  75   BAD_SW_IF_INDEX_LABEL;
  76
  77   REPLY_MACRO (VL_API_SR_LOCALSID_ADD_DEL_REPLY);
  78 }
  79
  80 static void
  81 vl_api_sr_policy_add_t_handler (vl_api_sr_policy_add_t * mp)
  82 {
  83   vl_api_sr_policy_add_reply_t *rmp;
  84   ip6_address_t *segments = 0, *seg;
  85   ip6_address_t *this_address = (ip6_address_t *) mp->segments;
  86
  87   int i;
  88   for (i = 0; i < mp->n_segments; i++)
  89     {
  90       vec_add2 (segments, seg, 1);
  91       clib_memcpy (seg->as_u8, this_address->as_u8, sizeof (*this_address));
  92       this_address++;
  93     }
  94
  95 /*
  96  * sr_policy_add (ip6_address_t *bsid, ip6_address_t *segments,
  97  *                u32 weight, u8 behavior, u32 fib_table, u8 is_encap)
  98  */
  99   int rv = 0;
 100   rv = sr_policy_add ((ip6_address_t *) & mp->bsid_addr,
 101                       segments,
 102                       ntohl (mp->weight),
 103                       mp->type, ntohl (mp->fib_table), mp->is_encap);
 104
 105   REPLY_MACRO (VL_API_SR_POLICY_ADD_REPLY);
 106 }
 107
 108 static void
 109 vl_api_sr_policy_mod_t_handler (vl_api_sr_policy_mod_t * mp)
 110 {
 111   vl_api_sr_policy_mod_reply_t *rmp;
 112
 113   ip6_address_t *segments = 0, *seg;
 114   ip6_address_t *this_address = (ip6_address_t *) mp->segments;
 115
 116   int i;
 117   for (i = 0; i < mp->n_segments; i++)
 118     {
 119       vec_add2 (segments, seg, 1);
 120       clib_memcpy (seg->as_u8, this_address->as_u8, sizeof (*this_address));
 121       this_address++;
 122     }
 123
 124   int rv = 0;
 125 /*
 126  * int
 127  * sr_policy_mod(ip6_address_t *bsid, u32 index, u32 fib_table,
 128  *               u8 operation, ip6_address_t *segments, u32 sl_index,
 129  *               u32 weight, u8 is_encap)
 130  */
 131   rv = sr_policy_mod ((ip6_address_t *) & mp->bsid_addr,
 132                       ntohl (mp->sr_policy_index),
 133                       ntohl (mp->fib_table),
 134                       mp->operation,
 135                       segments, ntohl (mp->sl_index), ntohl (mp->weight));
 136
 137   REPLY_MACRO (VL_API_SR_POLICY_MOD_REPLY);
 138 }
 139
 140 static void
 141 vl_api_sr_policy_del_t_handler (vl_api_sr_policy_del_t * mp)
 142 {
 143   vl_api_sr_policy_del_reply_t *rmp;
 144   int rv = 0;
 145 /*
 146  * int
 147  * sr_policy_del (ip6_address_t *bsid, u32 index)
 148  */
 149   rv = sr_policy_del ((ip6_address_t *) & mp->bsid_addr,
 150                       ntohl (mp->sr_policy_index));
 151
 152   REPLY_MACRO (VL_API_SR_POLICY_DEL_REPLY);
 153 }
 154
 155 static void vl_api_sr_steering_add_del_t_handler
 156   (vl_api_sr_steering_add_del_t * mp)
 157 {
 158   vl_api_sr_steering_add_del_reply_t *rmp;
 159   int rv = 0;
 160 /*
 161  * int
 162  * sr_steering_policy(int is_del, ip6_address_t *bsid, u32 sr_policy_index,
 163  *  u32 table_id, ip46_address_t *prefix, u32 mask_width, u32 sw_if_index,
 164  *  u8 traffic_type)
 165  */
 166
 167   VALIDATE_SW_IF_INDEX (mp);
 168
 169   rv = sr_steering_policy (mp->is_del,
 170                            (ip6_address_t *) & mp->bsid_addr,
 171                            ntohl (mp->sr_policy_index),
 172                            ntohl (mp->table_id),
 173                            (ip46_address_t *) & mp->prefix_addr,
 174                            ntohl (mp->mask_width),
 175                            ntohl (mp->sw_if_index), mp->traffic_type);
 176
 177   BAD_SW_IF_INDEX_LABEL;
 178
 179   REPLY_MACRO (VL_API_SR_STEERING_ADD_DEL_REPLY);
 180 }
 181
 182 /*
 183  * sr_api_hookup
 184  * Add vpe's API message handlers to the table.
 185  * vlib has alread mapped shared memory and
 186  * added the client registration handlers.
 187  * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
 188  */
 189 #define vl_msg_name_crc_list
 190 #include <vnet/vnet_all_api_h.h>
 191 #undef vl_msg_name_crc_list
 192
 193 static void
 194 setup_message_id_table (api_main_t * am)
 195 {
 196 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
 197   foreach_vl_msg_name_crc_sr;
 198 #undef _
 199 }
 200
 201 static clib_error_t *
 202 sr_api_hookup (vlib_main_t * vm)
 203 {
 204   api_main_t *am = &api_main;
 205
 206 #define _(N,n)                                                  \
 207     vl_msg_api_set_handlers(VL_API_##N, #n,                     \
 208                            vl_api_##n##_t_handler,              \
 209                            vl_noop_handler,                     \
 210                            vl_api_##n##_t_endian,               \
 211                            vl_api_##n##_t_print,                \
 212                            sizeof(vl_api_##n##_t), 1);
 213   foreach_vpe_api_msg;
 214 #undef _
 215
 216   /*
 217    * Manually register the sr policy add msg, so we trace
 218    * enough bytes to capture a typical segment list
 219    */
 220   vl_msg_api_set_handlers (VL_API_SR_POLICY_ADD,
 221                            "sr_policy_add",
 222                            vl_api_sr_policy_add_t_handler,
 223                            vl_noop_handler,
 224                            vl_api_sr_policy_add_t_endian,
 225                            vl_api_sr_policy_add_t_print, 256, 1);
 226
 227   /*
 228    * Manually register the sr policy mod msg, so we trace
 229    * enough bytes to capture a typical segment list
 230    */
 231   vl_msg_api_set_handlers (VL_API_SR_POLICY_MOD,
 232                            "sr_policy_mod",
 233                            vl_api_sr_policy_mod_t_handler,
 234                            vl_noop_handler,
 235                            vl_api_sr_policy_mod_t_endian,
 236                            vl_api_sr_policy_mod_t_print, 256, 1);
 237
 238   /*
 239    * Set up the (msg_name, crc, message-id) table
 240    */
 241   setup_message_id_table (am);
 242
 243   return 0;
 244 }
 245
 246 VLIB_API_INIT_FUNCTION (sr_api_hookup);
 247
 248 /*
 249  * fd.io coding-style-patch-verification: ON
 250  *
 251  * Local Variables:
 252  * eval: (c-set-style "gnu")
 253  * End:
 254  */