src/vnet/sr/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/sr/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   rv = sr_cli_localsid (mp->is_del,
  64                         (ip6_address_t *) & mp->localsid_addr,
  65                         mp->end_psp,
  66                         mp->behavior,
  67                         ntohl (mp->sw_if_index),
  68                         ntohl (mp->vlan_index),
  69                         ntohl (mp->fib_table),
  70                         (ip46_address_t *) & mp->nh_addr, NULL);
  71
  72   REPLY_MACRO (VL_API_SR_LOCALSID_ADD_DEL_REPLY);
  73 }
  74
  75 static void
  76 vl_api_sr_policy_add_t_handler (vl_api_sr_policy_add_t * mp)
  77 {
  78   vl_api_sr_policy_add_reply_t *rmp;
  79   ip6_address_t *segments = 0, *seg;
  80   ip6_address_t *this_address = (ip6_address_t *) mp->segments;
  81
  82   int i;
  83   for (i = 0; i < mp->n_segments; i++)
  84     {
  85       vec_add2 (segments, seg, 1);
  86       clib_memcpy (seg->as_u8, this_address->as_u8, sizeof (*this_address));
  87       this_address++;
  88     }
  89
  90 /*
  91  * sr_policy_add (ip6_address_t *bsid, ip6_address_t *segments,
  92  *                u32 weight, u8 behavior, u32 fib_table, u8 is_encap)
  93  */
  94   int rv = 0;
  95   rv = sr_policy_add ((ip6_address_t *) & mp->bsid_addr,
  96                       segments,
  97                       ntohl (mp->weight),
  98                       mp->type, ntohl (mp->fib_table), mp->is_encap);
  99
 100   REPLY_MACRO (VL_API_SR_POLICY_ADD_REPLY);
 101 }
 102
 103 static void
 104 vl_api_sr_policy_mod_t_handler (vl_api_sr_policy_mod_t * mp)
 105 {
 106   vl_api_sr_policy_mod_reply_t *rmp;
 107
 108   ip6_address_t *segments = 0, *seg;
 109   ip6_address_t *this_address = (ip6_address_t *) mp->segments;
 110
 111   int i;
 112   for (i = 0; i < mp->n_segments; i++)
 113     {
 114       vec_add2 (segments, seg, 1);
 115       clib_memcpy (seg->as_u8, this_address->as_u8, sizeof (*this_address));
 116       this_address++;
 117     }
 118
 119   int rv = 0;
 120 /*
 121  * int
 122  * sr_policy_mod(ip6_address_t *bsid, u32 index, u32 fib_table,
 123  *               u8 operation, ip6_address_t *segments, u32 sl_index,
 124  *               u32 weight, u8 is_encap)
 125  */
 126   rv = sr_policy_mod ((ip6_address_t *) & mp->bsid_addr,
 127                       ntohl (mp->sr_policy_index),
 128                       ntohl (mp->fib_table),
 129                       mp->operation,
 130                       segments, ntohl (mp->sl_index), ntohl (mp->weight));
 131
 132   REPLY_MACRO (VL_API_SR_POLICY_MOD_REPLY);
 133 }
 134
 135 static void
 136 vl_api_sr_policy_del_t_handler (vl_api_sr_policy_del_t * mp)
 137 {
 138   vl_api_sr_policy_del_reply_t *rmp;
 139   int rv = 0;
 140 /*
 141  * int
 142  * sr_policy_del (ip6_address_t *bsid, u32 index)
 143  */
 144   rv = sr_policy_del ((ip6_address_t *) & mp->bsid_addr,
 145                       ntohl (mp->sr_policy_index));
 146
 147   REPLY_MACRO (VL_API_SR_POLICY_DEL_REPLY);
 148 }
 149
 150 static void vl_api_sr_steering_add_del_t_handler
 151   (vl_api_sr_steering_add_del_t * mp)
 152 {
 153   vl_api_sr_steering_add_del_reply_t *rmp;
 154   int rv = 0;
 155 /*
 156  * int
 157  * sr_steering_policy(int is_del, ip6_address_t *bsid, u32 sr_policy_index,
 158  *  u32 table_id, ip46_address_t *prefix, u32 mask_width, u32 sw_if_index,
 159  *  u8 traffic_type)
 160  */
 161   rv = sr_steering_policy (mp->is_del,
 162                            (ip6_address_t *) & mp->bsid_addr,
 163                            ntohl (mp->sr_policy_index),
 164                            ntohl (mp->table_id),
 165                            (ip46_address_t *) & mp->prefix_addr,
 166                            ntohl (mp->mask_width),
 167                            ntohl (mp->sw_if_index), mp->traffic_type);
 168
 169   REPLY_MACRO (VL_API_SR_STEERING_ADD_DEL_REPLY);
 170 }
 171
 172 /*
 173  * sr_api_hookup
 174  * Add vpe's API message handlers to the table.
 175  * vlib has alread mapped shared memory and
 176  * added the client registration handlers.
 177  * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
 178  */
 179 #define vl_msg_name_crc_list
 180 #include <vnet/vnet_all_api_h.h>
 181 #undef vl_msg_name_crc_list
 182
 183 static void
 184 setup_message_id_table (api_main_t * am)
 185 {
 186 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
 187   foreach_vl_msg_name_crc_sr;
 188 #undef _
 189 }
 190
 191 static clib_error_t *
 192 sr_api_hookup (vlib_main_t * vm)
 193 {
 194   api_main_t *am = &api_main;
 195
 196 #define _(N,n)                                                  \
 197     vl_msg_api_set_handlers(VL_API_##N, #n,                     \
 198                            vl_api_##n##_t_handler,              \
 199                            vl_noop_handler,                     \
 200                            vl_api_##n##_t_endian,               \
 201                            vl_api_##n##_t_print,                \
 202                            sizeof(vl_api_##n##_t), 1);
 203   foreach_vpe_api_msg;
 204 #undef _
 205
 206   /*
 207    * Manually register the sr policy add msg, so we trace
 208    * enough bytes to capture a typical segment list
 209    */
 210   vl_msg_api_set_handlers (VL_API_SR_POLICY_ADD,
 211                            "sr_policy_add",
 212                            vl_api_sr_policy_add_t_handler,
 213                            vl_noop_handler,
 214                            vl_api_sr_policy_add_t_endian,
 215                            vl_api_sr_policy_add_t_print, 256, 1);
 216
 217   /*
 218    * Manually register the sr policy mod msg, so we trace
 219    * enough bytes to capture a typical segment list
 220    */
 221   vl_msg_api_set_handlers (VL_API_SR_POLICY_MOD,
 222                            "sr_policy_mod",
 223                            vl_api_sr_policy_mod_t_handler,
 224                            vl_noop_handler,
 225                            vl_api_sr_policy_mod_t_endian,
 226                            vl_api_sr_policy_mod_t_print, 256, 1);
 227
 228   /*
 229    * Set up the (msg_name, crc, message-id) table
 230    */
 231   setup_message_id_table (am);
 232
 233   return 0;
 234 }
 235
 236 VLIB_API_INIT_FUNCTION (sr_api_hookup);
 237
 238 /*
 239  * fd.io coding-style-patch-verification: ON
 240  *
 241  * Local Variables:
 242  * eval: (c-set-style "gnu")
 243  * End:
 244  */