/* * Copyright (c) 2016 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <vnet/classify/flow_classify.h> flow_classify_main_t flow_classify_main; static void vnet_flow_classify_feature_enable (vlib_main_t * vnm, flow_classify_main_t * fcm, u32 sw_if_index, flow_classify_table_id_t tid, int feature_enable) { vnet_feature_config_main_t *vfcm; u8 arc; if (tid == FLOW_CLASSIFY_TABLE_IP4) { vnet_feature_enable_disable ("ip4-unicast", "ip4-flow-classify", sw_if_index, feature_enable, 0, 0); arc = vnet_get_feature_arc_index ("ip4-unicast"); } else { vnet_feature_enable_disable ("ip6-unicast", "ip6-flow-classify", sw_if_index, feature_enable, 0, 0); arc = vnet_get_feature_arc_index ("ip6-unicast"); } vfcm = vnet_get_feature_arc_config_main (arc); fcm->vnet_config_main[tid] = &vfcm->config_main; } int vnet_set_flow_classify_intfc (vlib_main_t * vm, u32 sw_if_index, u32 ip4_table_index, u32 ip6_table_index, u32 is_add) { flow_classify_main_t *fcm = &flow_classify_main; vnet_classify_main_t *vcm = fcm->vnet_classify_main; u32 pct[FLOW_CLASSIFY_N_TABLES] = { ip4_table_index, ip6_table_index }; u32 ti; /* Assume that we've validated sw_if_index in the API layer */ for (ti = 0; ti < FLOW_CLASSIFY_N_TABLES; ti++) { if (pct[ti] == ~0) continue; if (pool_is_free_index (vcm->tables, pct[ti])) return VNET_API_ERROR_NO_SUCH_TABLE; vec_validate_init_empty (fcm->classify_table_index_by_sw_if_index[ti], sw_if_index, ~0); /* Reject any DEL operation with wrong sw_if_index */ if (!is_add && (pct[ti] != fcm->classify_table_index_by_sw_if_index[ti][sw_if_index])) { clib_warning ("Non-existent intf_idx=%d with table_index=%d for delete", sw_if_index, pct[ti]); return VNET_API_ERROR_NO_SUCH_TABLE; } /* Return ok on ADD operaton if feature is already enabled */ if (is_add && fcm->classify_table_index_by_sw_if_index[ti][sw_if_index] != ~0) return 0; vnet_flow_classify_feature_enable (vm, fcm, sw_if_index, ti, is_add); if (is_add) fcm->classify_table_index_by_sw_if_index[ti][sw_if_index] = pct[ti]; else fcm->classify_table_index_by_sw_if_index[ti][sw_if_index] = ~0; } return 0; } static clib_error_t * set_flow_classify_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { vnet_main_t *vnm = vnet_get_main (); u32 sw_if_index = ~0; u32 ip4_table_index = ~0; u32 ip6_table_index = ~0; u32 is_add = 1; u32 idx_cnt = 0; int rv; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "interface %U", unformat_vnet_sw_interface, vnm, &sw_if_index)) ; else if (unformat (input, "ip4-table %d", &ip4_table_index)) idx_cnt++; else if (unformat (input, "ip6-table %d", &ip6_table_index)) idx_cnt++; else if (unformat (input, "del")) is_add = 0; else break; } if (sw_if_index == ~0) return clib_error_return (0, "Interface must be specified."); if (!idx_cnt) return clib_error_return (0, "Table index should be specified."); if (idx_cnt > 1) return clib_error_return (0, "Only one table index per API is allowed."); rv = vnet_set_flow_classify_intfc (vm, sw_if_index, ip4_table_index, ip6_table_index, is_add); switch (rv) { case 0: break; case VNET_API_ERROR_NO_MATCHING_INTERFACE: return clib_error_return (0, "No such interface"); case VNET_API_ERROR_NO_SUCH_ENTRY: return clib_error_return (0, "No such classifier table"); } return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (set_input_acl_command, static) = { .path = "set flow classify", .short_help = "set flow classify interface <int> [ip4-table <index>]\n" " [ip6-table <index>] [del]", .function = set_flow_classify_command_fn, }; /* *INDENT-ON* */ static uword unformat_table_type (unformat_input_t * input, va_list * va) { u32 *r = va_arg (*va, u32 *); u32 tid; if (unformat (input, "ip4")) tid = FLOW_CLASSIFY_TABLE_IP4; else if (unformat (input, "ip6")) tid = FLOW_CLASSIFY_TABLE_IP6; else return 0; *r = tid; return 1; } static clib_error_t * show_flow_classify_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { flow_classify_main_t *fcm = &flow_classify_main; u32 type = FLOW_CLASSIFY_N_TABLES; u32 *vec_tbl; int i; if (unformat (input, "type %U", unformat_table_type, &type)) ; else return clib_error_return (0, "Type must be specified.");; if (type == FLOW_CLASSIFY_N_TABLES) return clib_error_return (0, "Invalid table type."); vec_tbl = fcm->classify_table_index_by_sw_if_index[type]; if (vec_len (vec_tbl)) vlib_cli_output (vm, "%10s%20s\t\t%s", "Intfc idx", "Classify table", "Interface name"); else vlib_cli_output (vm, "No tables configured."); for (i = 0; i < vec_len (vec_tbl); i++) { if (vec_elt (vec_tbl, i) == ~0) continue; vlib_cli_output (vm, "%10d%20d\t\t%U", i, vec_elt (vec_tbl, i), format_vnet_sw_if_index_name, fcm->vnet_main, i); } return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (show_flow_classify_command, static) = { .path = "show classify flow", .short_help = "show classify flow type [ip4|ip6]", .function = show_flow_classify_command_fn, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */