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