src/vnet/pg/pg_api.c

   1 /*
   2  *------------------------------------------------------------------
   3  * pg_api.c - vnet pg 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 <vlibmemory/api.h>
  22
  23 #include <vnet/pg/pg.h>
  24
  25 #include <vnet/vnet_msg_enum.h>
  26
  27 #define vl_typedefs             /* define message structures */
  28 #include <vnet/vnet_all_api_h.h>
  29 #undef vl_typedefs
  30
  31 #define vl_endianfun            /* define message structures */
  32 #include <vnet/vnet_all_api_h.h>
  33 #undef vl_endianfun
  34
  35 /* instantiate all the print functions we know about */
  36 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
  37 #define vl_printfun
  38 #include <vnet/vnet_all_api_h.h>
  39 #undef vl_printfun
  40
  41 #include <vlibapi/api_helper_macros.h>
  42
  43 #define foreach_pg_api_msg                                                    \
  44   _ (PG_CREATE_INTERFACE, pg_create_interface)                                \
  45   _ (PG_CREATE_INTERFACE_V2, pg_create_interface_v2)                          \
  46   _ (PG_CAPTURE, pg_capture)                                                  \
  47   _ (PG_ENABLE_DISABLE, pg_enable_disable)                                    \
  48   _ (PG_INTERFACE_ENABLE_DISABLE_COALESCE,                                    \
  49      pg_interface_enable_disable_coalesce)
  50
  51 static void
  52 vl_api_pg_create_interface_t_handler (vl_api_pg_create_interface_t * mp)
  53 {
  54   vl_api_pg_create_interface_reply_t *rmp;
  55   int rv = 0;
  56
  57   pg_main_t *pg = &pg_main;
  58   u32 pg_if_id =
  59     pg_interface_add_or_get (pg, ntohl (mp->interface_id), mp->gso_enabled,
  60                              ntohl (mp->gso_size), 0, PG_MODE_ETHERNET);
  61   pg_interface_t *pi = pool_elt_at_index (pg->interfaces, pg_if_id);
  62
  63   /* *INDENT-OFF* */
  64   REPLY_MACRO2(VL_API_PG_CREATE_INTERFACE_REPLY,
  65   ({
  66     rmp->sw_if_index = ntohl(pi->sw_if_index);
  67   }));
  68   /* *INDENT-ON* */
  69 }
  70
  71 static void
  72 vl_api_pg_create_interface_v2_t_handler (vl_api_pg_create_interface_v2_t *mp)
  73 {
  74   vl_api_pg_create_interface_v2_reply_t *rmp;
  75   int rv = 0;
  76
  77   pg_main_t *pg = &pg_main;
  78   u32 pg_if_id =
  79     pg_interface_add_or_get (pg, ntohl (mp->interface_id), mp->gso_enabled,
  80                              ntohl (mp->gso_size), 0, (u8) mp->mode);
  81   pg_interface_t *pi = pool_elt_at_index (pg->interfaces, pg_if_id);
  82
  83   REPLY_MACRO2 (VL_API_PG_CREATE_INTERFACE_V2_REPLY,
  84                 ({ rmp->sw_if_index = ntohl (pi->sw_if_index); }));
  85 }
  86
  87 static void
  88   vl_api_pg_interface_enable_disable_coalesce_t_handler
  89   (vl_api_pg_interface_enable_disable_coalesce_t * mp)
  90 {
  91   vl_api_pg_interface_enable_disable_coalesce_reply_t *rmp;
  92   int rv = 0;
  93
  94   VALIDATE_SW_IF_INDEX (mp);
  95
  96   u32 sw_if_index = ntohl (mp->sw_if_index);
  97
  98   pg_main_t *pg = &pg_main;
  99   vnet_main_t *vnm = vnet_get_main ();
 100   vnet_hw_interface_t *hw =
 101     vnet_get_sup_hw_interface_api_visible_or_null (vnm, sw_if_index);
 102
 103   if (hw)
 104     {
 105       pg_interface_t *pi =
 106         pool_elt_at_index (pg->interfaces, hw->dev_instance);
 107       if (pi->gso_enabled)
 108         pg_interface_enable_disable_coalesce (pi, mp->coalesce_enabled,
 109                                               hw->tx_node_index);
 110       else
 111         rv = VNET_API_ERROR_CANNOT_ENABLE_DISABLE_FEATURE;
 112     }
 113   else
 114     {
 115       rv = VNET_API_ERROR_NO_MATCHING_INTERFACE;
 116     }
 117
 118   BAD_SW_IF_INDEX_LABEL;
 119   REPLY_MACRO (VL_API_PG_INTERFACE_ENABLE_DISABLE_COALESCE_REPLY);
 120 }
 121
 122 static void
 123 vl_api_pg_capture_t_handler (vl_api_pg_capture_t * mp)
 124 {
 125   vl_api_pg_capture_reply_t *rmp;
 126   int rv = 0;
 127
 128   vnet_main_t *vnm = vnet_get_main ();
 129   vnet_interface_main_t *im = &vnm->interface_main;
 130   vnet_hw_interface_t *hi = 0;
 131
 132   u8 *intf_name = format (0, "pg%d", ntohl (mp->interface_id), 0);
 133   vec_terminate_c_string (intf_name);
 134   u32 hw_if_index = ~0;
 135   uword *p = hash_get_mem (im->hw_interface_by_name, intf_name);
 136   if (p)
 137     hw_if_index = *p;
 138   vec_free (intf_name);
 139
 140   if (hw_if_index != ~0)
 141     {
 142       pg_capture_args_t _a, *a = &_a;
 143       char *pcap_file_name =
 144         vl_api_from_api_to_new_c_string (&mp->pcap_file_name);
 145
 146       hi = vnet_get_sup_hw_interface (vnm, hw_if_index);
 147       a->hw_if_index = hw_if_index;
 148       a->dev_instance = hi->dev_instance;
 149       a->is_enabled = mp->is_enabled;
 150       a->pcap_file_name = pcap_file_name;
 151       a->count = ntohl (mp->count);
 152
 153       clib_error_t *e = pg_capture (a);
 154       if (e)
 155         {
 156           clib_error_report (e);
 157           rv = VNET_API_ERROR_CANNOT_CREATE_PCAP_FILE;
 158         }
 159
 160       vec_free (pcap_file_name);
 161     }
 162   REPLY_MACRO (VL_API_PG_CAPTURE_REPLY);
 163 }
 164
 165 static void
 166 vl_api_pg_enable_disable_t_handler (vl_api_pg_enable_disable_t * mp)
 167 {
 168   vl_api_pg_enable_disable_reply_t *rmp;
 169   int rv = 0;
 170
 171   pg_main_t *pg = &pg_main;
 172   u32 stream_index = ~0;
 173
 174   int is_enable = mp->is_enabled != 0;
 175
 176   if (vl_api_string_len (&mp->stream_name) > 0)
 177     {
 178       u8 *stream_name = vl_api_from_api_to_new_vec (mp, &mp->stream_name);
 179       uword *p = hash_get_mem (pg->stream_index_by_name, stream_name);
 180       if (p)
 181         stream_index = *p;
 182       vec_free (stream_name);
 183     }
 184
 185   pg_enable_disable (stream_index, is_enable);
 186
 187   REPLY_MACRO (VL_API_PG_ENABLE_DISABLE_REPLY);
 188 }
 189
 190 #define vl_msg_name_crc_list
 191 #include <vnet/pg/pg.api.h>
 192 #undef vl_msg_name_crc_list
 193
 194 static void
 195 setup_message_id_table (api_main_t * am)
 196 {
 197 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
 198   foreach_vl_msg_name_crc_pg;
 199 #undef _
 200 }
 201
 202 static clib_error_t *
 203 pg_api_hookup (vlib_main_t * vm)
 204 {
 205   api_main_t *am = vlibapi_get_main ();
 206
 207 #define _(N,n)                                                  \
 208     vl_msg_api_set_handlers(VL_API_##N, #n,                     \
 209                            vl_api_##n##_t_handler,              \
 210                            vl_noop_handler,                     \
 211                            vl_api_##n##_t_endian,               \
 212                            vl_api_##n##_t_print,                \
 213                            sizeof(vl_api_##n##_t), 1);
 214   foreach_pg_api_msg;
 215 #undef _
 216
 217   /*
 218    * Set up the (msg_name, crc, message-id) table
 219    */
 220   setup_message_id_table (am);
 221
 222   return 0;
 223 }
 224
 225 VLIB_API_INIT_FUNCTION (pg_api_hookup);
 226
 227 /*
 228  * fd.io coding-style-patch-verification: ON
 229  *
 230  * Local Variables:
 231  * eval: (c-set-style "gnu")
 232  * End:
 233  */