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/*
* Copyright (c) 2019 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 <vlib/vlib.h>
#include <vlib/buffer_funcs.h>
#define TEST_I(_cond, _comment, _args...) \
({ \
int _evald = (_cond); \
if (!(_evald)) { \
fformat(stderr, "FAIL:%d: " _comment "\n", \
__LINE__, ##_args); \
} else { \
fformat(stderr, "PASS:%d: " _comment "\n", \
__LINE__, ##_args); \
} \
_evald; \
})
#define TEST(_cond, _comment, _args...) \
{ \
if (!TEST_I(_cond, _comment, ##_args)) { \
return 1; \
} \
}
/* test function for a specific case where current_data is negative, verify
* that there is no crash */
static int
linearize_negative_current_data (vlib_main_t * vm)
{
u32 bi[32];
TEST (ARRAY_LEN (bi) == vlib_buffer_alloc (vm, bi, ARRAY_LEN (bi)),
"buff alloc");
u32 data_size = vlib_buffer_get_default_data_size (vm);
u32 i;
for (i = 0; i < ARRAY_LEN (bi) - 1; ++i)
{
vlib_buffer_t *b = vlib_get_buffer (vm, bi[i]);
b->next_buffer = bi[i + 1];
b->flags |= VLIB_BUFFER_NEXT_PRESENT;
b->current_data = -14;
b->current_length = 14 + data_size;
}
vlib_buffer_chain_linearize (vm, vlib_get_buffer (vm, bi[0]));
return 0;
}
static clib_error_t *
test_linearize_fn (vlib_main_t * vm, unformat_input_t * input,
vlib_cli_command_t * cmd)
{
if (linearize_negative_current_data (vm))
{
return clib_error_return (0, "linearize_negative_current_data failed");
}
return (NULL);
}
/* *INDENT-OFF* */
VLIB_CLI_COMMAND (test_linearize_command, static) =
{
.path = "test chained-buffer-linearization",
.short_help = "test chained-buffer-linearization",
.function = test_linearize_fn,
};
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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