--- /dev/null
+/*
+ * Copyright (c) 2015 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/ip/ip.h>
+#include <vnet/classify/vnet_classify.h>
+#include <vnet/classify/input_acl.h>
+
+input_acl_main_t input_acl_main;
+
+static int
+vnet_inacl_ip_feature_enable (vlib_main_t * vnm,
+ input_acl_main_t *am,
+ u32 sw_if_index,
+ input_acl_table_id_t tid,
+ int feature_enable)
+{
+
+ if (tid == INPUT_ACL_TABLE_L2)
+ {
+ l2input_intf_bitmap_enable (sw_if_index, L2INPUT_FEAT_ACL,
+ feature_enable);
+ }
+ else
+ { /* IP[46] */
+ vnet_feature_config_main_t *fcm;
+ u8 arc;
+
+ if (tid == INPUT_ACL_TABLE_IP4)
+ {
+ vnet_feature_enable_disable ("ip4-unicast", "ip4-inacl",
+ sw_if_index, feature_enable, 0, 0);
+ arc = vnet_get_feature_arc_index ("ip4-unicast");
+ }
+ else
+ {
+ vnet_feature_enable_disable ("ip6-unicast", "ip6-inacl",
+ sw_if_index, feature_enable, 0, 0);
+ arc = vnet_get_feature_arc_index ("ip6-unicast");
+ }
+
+ fcm = vnet_get_feature_arc_config_main (arc);
+ am->vnet_config_main[tid] = &fcm->config_main;
+ }
+
+ return 0;
+}
+
+int vnet_set_input_acl_intfc (vlib_main_t * vm, u32 sw_if_index,
+ u32 ip4_table_index,
+ u32 ip6_table_index,
+ u32 l2_table_index, u32 is_add)
+{
+ input_acl_main_t * am = &input_acl_main;
+ vnet_classify_main_t * vcm = am->vnet_classify_main;
+ u32 acl[INPUT_ACL_N_TABLES] = {ip4_table_index, ip6_table_index,
+ l2_table_index};
+ u32 ti;
+
+ /* Assume that we've validated sw_if_index in the API layer */
+
+ for (ti = 0; ti < INPUT_ACL_N_TABLES; ti++)
+ {
+ if (acl[ti] == ~0)
+ continue;
+
+ if (pool_is_free_index (vcm->tables, acl[ti]))
+ return VNET_API_ERROR_NO_SUCH_TABLE;
+
+ vec_validate_init_empty
+ (am->classify_table_index_by_sw_if_index[ti], sw_if_index, ~0);
+
+ /* Reject any DEL operation with wrong sw_if_index */
+ if (!is_add &&
+ (acl[ti] != am->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, acl[ti]);
+ return VNET_API_ERROR_NO_SUCH_TABLE;
+ }
+
+ /* Return ok on ADD operaton if feature is already enabled */
+ if (is_add &&
+ am->classify_table_index_by_sw_if_index[ti][sw_if_index] != ~0)
+ return 0;
+
+ vnet_inacl_ip_feature_enable (vm, am, sw_if_index, ti, is_add);
+
+ if (is_add)
+ am->classify_table_index_by_sw_if_index[ti][sw_if_index] = acl[ti];
+ else
+ am->classify_table_index_by_sw_if_index[ti][sw_if_index] = ~0;
+ }
+
+ return 0;
+}
+
+static clib_error_t *
+set_input_acl_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 l2_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, "intfc %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, "l2-table %d", &l2_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_input_acl_intfc (vm, sw_if_index, ip4_table_index,
+ ip6_table_index, l2_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;
+}
+
+/*
+ * Configure interface to enable/disble input ACL feature:
+ * intfc - interface name to be configured as input ACL
+ * Ip4-table <index> [del] - enable/disable IP4 input ACL
+ * Ip6-table <index> [del] - enable/disable IP6 input ACL
+ * l2-table <index> [del] - enable/disable Layer2 input ACL
+ *
+ * Note: Only one table index per API call is allowed.
+ *
+ */
+VLIB_CLI_COMMAND (set_input_acl_command, static) = {
+ .path = "set interface input acl",
+ .short_help =
+ "set interface input acl intfc <int> [ip4-table <index>]\n"
+ " [ip6-table <index>] [l2-table <index>] [del]",
+ .function = set_input_acl_command_fn,
+};
+
+clib_error_t *input_acl_init (vlib_main_t *vm)
+{
+ input_acl_main_t * am = &input_acl_main;
+ clib_error_t * error = 0;
+
+ if ((error = vlib_call_init_function (vm, ip_inacl_init)))
+ return error;
+
+ am->vlib_main = vm;
+ am->vnet_main = vnet_get_main();
+ am->vnet_classify_main = &vnet_classify_main;
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (input_acl_init);
+
+uword unformat_acl_type (unformat_input_t * input, va_list * args)
+{
+ u32 * acl_type = va_arg (*args, u32 *);
+ u32 tid = INPUT_ACL_N_TABLES;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) {
+ if (unformat (input, "ip4"))
+ tid = INPUT_ACL_TABLE_IP4;
+ else if (unformat (input, "ip6"))
+ tid = INPUT_ACL_TABLE_IP6;
+ else if (unformat (input, "l2"))
+ tid = INPUT_ACL_TABLE_L2;
+ else
+ break;
+ }
+
+ *acl_type = tid;
+ return 1;
+}
+
+u8 * format_vnet_inacl_info (u8 * s, va_list * va)
+{
+ input_acl_main_t * am = va_arg (*va, input_acl_main_t *);
+ int sw_if_idx = va_arg (*va, int);
+ u32 tid = va_arg (*va, u32);
+
+ if (tid == ~0)
+ {
+ s = format (s, "%10s%20s\t\t%s", "Intfc idx", "Classify table",
+ "Interface name");
+ return s;
+ }
+
+ s = format (s, "%10d%20d\t\t%U", sw_if_idx, tid,
+ format_vnet_sw_if_index_name, am->vnet_main, sw_if_idx);
+
+ return s;
+}
+
+static clib_error_t *
+show_inacl_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ input_acl_main_t * am = &input_acl_main;
+ u32 type = INPUT_ACL_N_TABLES;
+ int i;
+ u32 * vec_tbl;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "type %U", unformat_acl_type, &type))
+ ;
+ else
+ break;
+ }
+
+ if (type == INPUT_ACL_N_TABLES)
+ return clib_error_return (0, "Invalid input ACL table type.");
+
+ vec_tbl = am->classify_table_index_by_sw_if_index[type];
+
+ if (vec_len(vec_tbl))
+ vlib_cli_output (vm, "%U", format_vnet_inacl_info, am, ~0 /* hdr */, ~0);
+ else
+ vlib_cli_output (vm, "No input ACL tables configured");
+
+ for (i = 0; i < vec_len (vec_tbl); i++)
+ {
+ if (vec_elt(vec_tbl, i) == ~0)
+ continue;
+
+ vlib_cli_output (vm, "%U", format_vnet_inacl_info,
+ am, i, vec_elt(vec_tbl, i));
+ }
+
+ return 0;
+}
+
+VLIB_CLI_COMMAND (show_inacl_command, static) = {
+ .path = "show inacl",
+ .short_help = "show inacl type [ip4|ip6|l2]",
+ .function = show_inacl_command_fn,
+};
Code Review / vpp.git / blobdiff