diff options
Diffstat (limited to 'src/vnet/classify/flow_classify.c')
| -rw-r--r-- | src/vnet/classify/flow_classify.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/src/vnet/classify/flow_classify.c b/src/vnet/classify/flow_classify.c new file mode 100644 index 00000000..0a624204 --- /dev/null +++ b/src/vnet/classify/flow_classify.c @@ -0,0 +1,212 @@ +/* + * 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> + +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; +} + +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, +}; + +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; +} + +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, +}; |