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