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/* SPDX-License-Identifier: Apache-2.0
* Copyright (c) 2023 Cisco Systems, Inc.
*/
#include "vppinfra/pool.h"
#include <vnet/vnet.h>
#include <vnet/dev/dev.h>
#include <vnet/dev/counters.h>
#include <vnet/dev/log.h>
#include <vnet/dev/types.h>
#include <vppinfra/format_table.h>
VLIB_REGISTER_LOG_CLASS (dev_log, static) = {
.class_name = "dev",
.subclass_name = "args",
};
void
vnet_dev_arg_clear_value (vnet_dev_arg_t *a)
{
if (a->type == VNET_DEV_ARG_TYPE_STRING)
vec_free (a->val.string);
a->val = (typeof (a->val)){};
a->val_set = 0;
}
void
vnet_dev_arg_free (vnet_dev_arg_t **vp)
{
vnet_dev_arg_t *v;
vec_foreach (v, *vp)
vnet_dev_arg_clear_value (v);
vec_free (*vp);
}
vnet_dev_rv_t
vnet_dev_arg_parse (vlib_main_t *vm, vnet_dev_t *dev, vnet_dev_arg_t *args,
u8 *str)
{
vnet_dev_rv_t rv = VNET_DEV_OK;
unformat_input_t in;
u8 *name = 0;
u8 *err = 0;
log_debug (dev, "input '%v'", str);
if (args == 0)
return rv;
unformat_init_string (&in, (char *) str, vec_len (str));
while (unformat (&in, "%U=", unformat_token, "a-zA-Z0-9_", &name))
{
vnet_dev_arg_t *a = args;
vec_add1 (name, 0);
while (a < vec_end (args))
if (strcmp (a->name, (char *) name) == 0)
break;
else
a++;
if (a->type == VNET_DEV_ARG_TYPE_BOOL)
{
if (unformat (&in, "true") || unformat (&in, "1") ||
unformat (&in, "on") || unformat (&in, "yes"))
a->val.boolean = 1;
else if (unformat (&in, "false") || unformat (&in, "0") ||
unformat (&in, "off") || unformat (&in, "no"))
a->val.boolean = 0;
else
{
log_err (dev, "unable to parse args: %U", format_unformat_error,
&in);
err = format (
0,
"boolean value expected ('yes', 'no', '0', '1', 'on', "
"'off', 'true' or 'false') for argument '%s', found '%U'",
a->name, format_unformat_error, &in);
goto done;
}
}
else if (a->type == VNET_DEV_ARG_TYPE_UINT32)
{
u32 val, min = 0, max = CLIB_U32_MAX;
if (!unformat (&in, "%u", &val))
{
err = format (0,
"unsigned integer in range %u - %u expected for "
"argument '%s', found '%U'",
min, max, a->name, format_unformat_error, &in);
goto done;
}
if (a->min || a->max)
{
min = a->min;
max = a->max;
}
if (val < min || val > max)
{
err = format (0,
"unsigned integer in range %u - %u expected for "
"argument '%s', found '%u'",
min, max, a->name, val);
goto done;
}
a->val.uint32 = val;
}
else if (a->type == VNET_DEV_ARG_TYPE_STRING)
{
if (!unformat (&in, "%U", unformat_double_quoted_string,
&a->val.string))
{
err = format (
0,
"double quoted string expected for argument '%s', found '%U'",
a->name, format_unformat_error, &in);
goto done;
}
if (a->min && vec_len (a->val.string) < a->min)
{
err =
format (0, "string '%v' too short, must be at least %u chars",
a->val.string, a->min);
goto done;
}
if (a->max && vec_len (a->val.string) > a->max)
{
err = format (
0, "string '%v' too long, must be no longer than %u chars",
a->val.string, a->max);
goto done;
}
}
else
{
err = format (0, "unknown argument '%s'", name);
goto done;
}
a->val_set = 1;
log_debug (dev, "name '%s' type %U value %U", name,
format_vnet_dev_arg_type, a->type, format_vnet_dev_arg_value,
a->type, &a->val);
vec_free (name);
unformat (&in, ",");
}
if (unformat_check_input (&in) != UNFORMAT_END_OF_INPUT)
err = format (0, "unable to parse argument name '%U'",
format_unformat_error, &in);
done:
if (err)
{
vnet_dev_arg_t *a = 0;
log_err (dev, "%v", err);
vec_free (err);
vec_foreach (a, args)
vnet_dev_arg_clear_value (a);
rv = VNET_DEV_ERR_INVALID_ARG;
}
vec_free (name);
unformat_free (&in);
return rv;
}
u8 *
format_vnet_dev_arg_type (u8 *s, va_list *args)
{
vnet_dev_arg_type_t t = va_arg (*args, u32);
switch (t)
{
#define _(n, f, val) \
case VNET_DEV_ARG_TYPE_##n: \
return format (s, #n);
foreach_vnet_dev_arg_type
#undef _
default : ASSERT (0);
break;
}
return s;
}
u8 *
format_vnet_dev_arg_value (u8 *s, va_list *args)
{
vnet_dev_arg_type_t t = va_arg (*args, u32);
vnet_dev_arg_value_t *v = va_arg (*args, vnet_dev_arg_value_t *);
switch (t)
{
#define _(n, f, value) \
case VNET_DEV_ARG_TYPE_##n: \
s = format (s, f, v->value); \
break;
foreach_vnet_dev_arg_type
#undef _
default : break;
}
return s;
}
u8 *
format_vnet_dev_args (u8 *s, va_list *va)
{
vnet_dev_arg_t *a, *args = va_arg (*va, vnet_dev_arg_t *);
table_t t = { .no_ansi = 1 };
table_add_header_col (&t, 4, "Name", "Value", "Default", "Description");
table_set_cell_align (&t, -1, 0, TTAA_LEFT);
table_set_cell_align (&t, -1, 3, TTAA_LEFT);
vec_foreach (a, args)
{
int r = a - args;
table_format_cell (&t, r, 0, "%s", a->name);
if (a->val_set)
table_format_cell (&t, r, 1, "%U", format_vnet_dev_arg_value, a->type,
&a->val);
else
table_format_cell (&t, r, 1, "<not set>");
table_format_cell (&t, r, 2, "%U", format_vnet_dev_arg_value, a->type,
&a->default_val);
table_format_cell (&t, r, 3, "%s", a->desc);
table_set_cell_align (&t, r, 0, TTAA_LEFT);
table_set_cell_align (&t, r, 3, TTAA_LEFT);
}
s = format (s, "%U", format_table, &t);
table_free (&t);
return s;
}
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