LCOV - code coverage report
Current view: top level - vnet/classify - flow_classify.c (source / functions) Hit Total Coverage
Test: coverage-filtered.info Lines: 2 90 2.2 %
Date: 2023-07-05 22:20:52 Functions: 4 9 44.4 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2016 Cisco and/or its affiliates.
       3             :  * Licensed under the Apache License, Version 2.0 (the "License");
       4             :  * you may not use this file except in compliance with the License.
       5             :  * You may obtain a copy of the License at:
       6             :  *
       7             :  *     http://www.apache.org/licenses/LICENSE-2.0
       8             :  *
       9             :  * Unless required by applicable law or agreed to in writing, software
      10             :  * distributed under the License is distributed on an "AS IS" BASIS,
      11             :  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             :  * See the License for the specific language governing permissions and
      13             :  * limitations under the License.
      14             :  */
      15             : 
      16             : #include <vnet/feature/feature.h>
      17             : #include <vnet/classify/flow_classify.h>
      18             : 
      19             : flow_classify_main_t flow_classify_main;
      20             : 
      21             : static void
      22           0 : vnet_flow_classify_feature_enable (vlib_main_t * vnm,
      23             :                                    flow_classify_main_t * fcm,
      24             :                                    u32 sw_if_index,
      25             :                                    flow_classify_table_id_t tid,
      26             :                                    int feature_enable)
      27             : {
      28             :   vnet_feature_config_main_t *vfcm;
      29             :   u8 arc;
      30             : 
      31           0 :   if (tid == FLOW_CLASSIFY_TABLE_IP4)
      32             :     {
      33           0 :       vnet_feature_enable_disable ("ip4-unicast", "ip4-flow-classify",
      34             :                                    sw_if_index, feature_enable, 0, 0);
      35           0 :       arc = vnet_get_feature_arc_index ("ip4-unicast");
      36             :     }
      37             :   else
      38             :     {
      39           0 :       vnet_feature_enable_disable ("ip6-unicast", "ip6-flow-classify",
      40             :                                    sw_if_index, feature_enable, 0, 0);
      41           0 :       arc = vnet_get_feature_arc_index ("ip6-unicast");
      42             :     }
      43             : 
      44           0 :   vfcm = vnet_get_feature_arc_config_main (arc);
      45           0 :   fcm->vnet_config_main[tid] = &vfcm->config_main;
      46           0 : }
      47             : 
      48             : int
      49           0 : vnet_set_flow_classify_intfc (vlib_main_t * vm, u32 sw_if_index,
      50             :                               u32 ip4_table_index, u32 ip6_table_index,
      51             :                               u32 is_add)
      52             : {
      53           0 :   flow_classify_main_t *fcm = &flow_classify_main;
      54           0 :   vnet_classify_main_t *vcm = fcm->vnet_classify_main;
      55           0 :   u32 pct[FLOW_CLASSIFY_N_TABLES] = { ip4_table_index, ip6_table_index };
      56             :   u32 ti;
      57             : 
      58             :   /* Assume that we've validated sw_if_index in the API layer */
      59             : 
      60           0 :   for (ti = 0; ti < FLOW_CLASSIFY_N_TABLES; ti++)
      61             :     {
      62           0 :       if (pct[ti] == ~0)
      63           0 :         continue;
      64             : 
      65           0 :       if (pool_is_free_index (vcm->tables, pct[ti]))
      66           0 :         return VNET_API_ERROR_NO_SUCH_TABLE;
      67             : 
      68           0 :       vec_validate_init_empty
      69             :         (fcm->classify_table_index_by_sw_if_index[ti], sw_if_index, ~0);
      70             : 
      71             :       /* Reject any DEL operation with wrong sw_if_index */
      72           0 :       if (!is_add &&
      73           0 :           (pct[ti] !=
      74           0 :            fcm->classify_table_index_by_sw_if_index[ti][sw_if_index]))
      75             :         {
      76           0 :           clib_warning
      77             :             ("Non-existent intf_idx=%d with table_index=%d for delete",
      78             :              sw_if_index, pct[ti]);
      79           0 :           return VNET_API_ERROR_NO_SUCH_TABLE;
      80             :         }
      81             : 
      82             :       /* Return ok on ADD operaton if feature is already enabled */
      83           0 :       if (is_add &&
      84           0 :           fcm->classify_table_index_by_sw_if_index[ti][sw_if_index] != ~0)
      85           0 :         return 0;
      86             : 
      87           0 :       vnet_flow_classify_feature_enable (vm, fcm, sw_if_index, ti, is_add);
      88             : 
      89           0 :       if (is_add)
      90           0 :         fcm->classify_table_index_by_sw_if_index[ti][sw_if_index] = pct[ti];
      91             :       else
      92           0 :         fcm->classify_table_index_by_sw_if_index[ti][sw_if_index] = ~0;
      93             :     }
      94             : 
      95             : 
      96           0 :   return 0;
      97             : }
      98             : 
      99             : static clib_error_t *
     100           0 : set_flow_classify_command_fn (vlib_main_t * vm,
     101             :                               unformat_input_t * input,
     102             :                               vlib_cli_command_t * cmd)
     103             : {
     104           0 :   vnet_main_t *vnm = vnet_get_main ();
     105           0 :   u32 sw_if_index = ~0;
     106           0 :   u32 ip4_table_index = ~0;
     107           0 :   u32 ip6_table_index = ~0;
     108           0 :   u32 is_add = 1;
     109           0 :   u32 idx_cnt = 0;
     110             :   int rv;
     111             : 
     112           0 :   while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
     113             :     {
     114           0 :       if (unformat (input, "interface %U", unformat_vnet_sw_interface,
     115             :                     vnm, &sw_if_index))
     116             :         ;
     117           0 :       else if (unformat (input, "ip4-table %d", &ip4_table_index))
     118           0 :         idx_cnt++;
     119           0 :       else if (unformat (input, "ip6-table %d", &ip6_table_index))
     120           0 :         idx_cnt++;
     121           0 :       else if (unformat (input, "del"))
     122           0 :         is_add = 0;
     123             :       else
     124           0 :         break;
     125             :     }
     126             : 
     127           0 :   if (sw_if_index == ~0)
     128           0 :     return clib_error_return (0, "Interface must be specified.");
     129             : 
     130           0 :   if (!idx_cnt)
     131           0 :     return clib_error_return (0, "Table index should be specified.");
     132             : 
     133           0 :   if (idx_cnt > 1)
     134           0 :     return clib_error_return (0, "Only one table index per API is allowed.");
     135             : 
     136           0 :   rv = vnet_set_flow_classify_intfc (vm, sw_if_index, ip4_table_index,
     137             :                                      ip6_table_index, is_add);
     138             : 
     139           0 :   switch (rv)
     140             :     {
     141           0 :     case 0:
     142           0 :       break;
     143             : 
     144           0 :     case VNET_API_ERROR_NO_MATCHING_INTERFACE:
     145           0 :       return clib_error_return (0, "No such interface");
     146             : 
     147           0 :     case VNET_API_ERROR_NO_SUCH_ENTRY:
     148           0 :       return clib_error_return (0, "No such classifier table");
     149             :     }
     150           0 :   return 0;
     151             : }
     152             : 
     153             : /* *INDENT-OFF* */
     154      272887 : VLIB_CLI_COMMAND (set_input_acl_command, static) = {
     155             :     .path = "set flow classify",
     156             :     .short_help =
     157             :     "set flow classify interface <int> [ip4-table <index>]\n"
     158             :     "  [ip6-table <index>] [del]",
     159             :     .function = set_flow_classify_command_fn,
     160             : };
     161             : /* *INDENT-ON* */
     162             : 
     163             : static uword
     164           0 : unformat_table_type (unformat_input_t * input, va_list * va)
     165             : {
     166           0 :   u32 *r = va_arg (*va, u32 *);
     167             :   u32 tid;
     168             : 
     169           0 :   if (unformat (input, "ip4"))
     170           0 :     tid = FLOW_CLASSIFY_TABLE_IP4;
     171           0 :   else if (unformat (input, "ip6"))
     172           0 :     tid = FLOW_CLASSIFY_TABLE_IP6;
     173             :   else
     174           0 :     return 0;
     175             : 
     176           0 :   *r = tid;
     177           0 :   return 1;
     178             : }
     179             : 
     180             : static clib_error_t *
     181           0 : show_flow_classify_command_fn (vlib_main_t * vm,
     182             :                                unformat_input_t * input,
     183             :                                vlib_cli_command_t * cmd)
     184             : {
     185           0 :   flow_classify_main_t *fcm = &flow_classify_main;
     186           0 :   u32 type = FLOW_CLASSIFY_N_TABLES;
     187             :   u32 *vec_tbl;
     188             :   int i;
     189             : 
     190           0 :   if (unformat (input, "type %U", unformat_table_type, &type))
     191             :     ;
     192             :   else
     193           0 :     return clib_error_return (0, "Type must be specified.");;
     194             : 
     195           0 :   if (type == FLOW_CLASSIFY_N_TABLES)
     196           0 :     return clib_error_return (0, "Invalid table type.");
     197             : 
     198           0 :   vec_tbl = fcm->classify_table_index_by_sw_if_index[type];
     199             : 
     200           0 :   if (vec_len (vec_tbl))
     201           0 :     vlib_cli_output (vm, "%10s%20s\t\t%s", "Intfc idx", "Classify table",
     202             :                      "Interface name");
     203             :   else
     204           0 :     vlib_cli_output (vm, "No tables configured.");
     205             : 
     206           0 :   for (i = 0; i < vec_len (vec_tbl); i++)
     207             :     {
     208           0 :       if (vec_elt (vec_tbl, i) == ~0)
     209           0 :         continue;
     210             : 
     211           0 :       vlib_cli_output (vm, "%10d%20d\t\t%U", i, vec_elt (vec_tbl, i),
     212             :                        format_vnet_sw_if_index_name, fcm->vnet_main, i);
     213             :     }
     214             : 
     215           0 :   return 0;
     216             : }
     217             : 
     218             : /* *INDENT-OFF* */
     219      272887 : VLIB_CLI_COMMAND (show_flow_classify_command, static) = {
     220             :     .path = "show classify flow",
     221             :     .short_help = "show classify flow type [ip4|ip6]",
     222             :     .function = show_flow_classify_command_fn,
     223             : };
     224             : /* *INDENT-ON* */
     225             : 
     226             : /*
     227             :  * fd.io coding-style-patch-verification: ON
     228             :  *
     229             :  * Local Variables:
     230             :  * eval: (c-set-style "gnu")
     231             :  * End:
     232             :  */

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