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/*
* 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:
*/
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