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/*
* Copyright (c) 2017-2021 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/vnet.h>
#include <vnet/dpo/dpo.h>
#include <vlib/vlib.h>
#include <vnet/fib/fib_entry.h>
#include <vnet/fib/fib_table.h>
#include "../strategy_dpo_manager.h"
#include "../faces/face.h"
#include "../error.h"
#include "../route.h"
#include "dpo_mw.h"
static clib_error_t *
hicn_mw_strategy_cli_set_weight_command_fn (vlib_main_t *vm,
unformat_input_t *main_input,
vlib_cli_command_t *cmd)
{
clib_error_t *cl_err = 0;
int ret = HICN_ERROR_NONE;
fib_prefix_t prefix;
hicn_face_id_t faceid = HICN_FACE_NULL;
u32 fib_index;
u32 weight = HICN_PARAM_FIB_ENTRY_NHOP_WGHT_DFLT;
hicn_dpo_ctx_t *hicn_dpo_ctx;
const dpo_id_t *hicn_dpo_id;
/* Get a line of input. */
unformat_input_t _line_input, *line_input = &_line_input;
if (unformat_user (main_input, unformat_line_input, line_input))
{
while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
{
if (unformat (line_input, "prefix %U/%u", unformat_ip46_address,
&prefix.fp_addr, IP46_TYPE_ANY, &prefix.fp_len))
;
else if (unformat (line_input, "face %u", &faceid))
;
else if (unformat (line_input, "weight %u", &weight))
;
else
{
return clib_error_return (
0, "%s", get_error_string (HICN_ERROR_CLI_INVAL));
}
}
}
if (((weight < 0) || (weight > HICN_PARAM_FIB_ENTRY_NHOP_WGHT_MAX)))
{
cl_err =
clib_error_return (0, "Next-hop weight must be between 0 and %d",
(int) HICN_PARAM_FIB_ENTRY_NHOP_WGHT_MAX);
goto done;
}
if (((ip46_address_is_zero (&prefix.fp_addr)) || faceid == HICN_FACE_NULL))
{
cl_err =
clib_error_return (0, "Please specify prefix and a valid faceid...");
goto done;
}
prefix.fp_proto = ip46_address_is_ip4 (&prefix.fp_addr) ? FIB_PROTOCOL_IP4 :
FIB_PROTOCOL_IP6;
ret = hicn_route_get_dpo (&prefix, &hicn_dpo_id, &fib_index);
if (ret == HICN_ERROR_NONE)
{
hicn_dpo_ctx = hicn_strategy_dpo_ctx_get (hicn_dpo_id->dpoi_index);
if (hicn_dpo_ctx == NULL ||
hicn_dpo_id->dpoi_type != hicn_dpo_strategy_mw_get_type ())
{
cl_err = clib_error_return (0, get_error_string (ret));
goto done;
}
hicn_strategy_mw_ctx_t *mw_dpo = (hicn_strategy_mw_ctx_t *) hicn_dpo_ctx;
int idx = ~0;
for (int i = 0; i < hicn_dpo_ctx->entry_count; i++)
if (hicn_dpo_ctx->next_hops[i] == faceid)
idx = i;
if (idx == ~0)
{
cl_err = clib_error_return (
0, get_error_string (HICN_ERROR_STRATEGY_NH_NOT_FOUND));
goto done;
}
mw_dpo->weight[idx] = weight;
}
else
{
cl_err = clib_error_return (0, get_error_string (ret));
}
done:
return (cl_err);
}
/* cli declaration for 'strategy mw' */
VLIB_CLI_COMMAND (hicn_mw_strategy_cli_set_weight_command, static) = {
.path = "hicn strategy mw set",
.short_help =
"hicn strategy mw set prefix <prefix> face <face_id> weight <weight>",
.function = hicn_mw_strategy_cli_set_weight_command_fn,
};
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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