/**
* Parse device parameters.
*
* @param devargs
* Device arguments structure.
*
* @return
* 0 on success, negative errno value otherwise and rte_errno is set.
*/
static int
mlx4_args(struct rte_devargs *devargs, struct mlx4_conf *conf)
{
struct rte_kvargs *kvlist;
unsigned int arg_count;
int ret = 0;
int i;
if (devargs == NULL)
return 0;
kvlist = rte_kvargs_parse(devargs->args, pmd_mlx4_init_params);
if (kvlist == NULL) {
rte_errno = EINVAL;
ERROR("failed to parse kvargs");
return -rte_errno;
}
/* Process parameters. */
for (i = 0; pmd_mlx4_init_params[i]; ++i) {
arg_count = rte_kvargs_count(kvlist, MLX4_PMD_PORT_KVARG);
while (arg_count-- > 0) {
ret = rte_kvargs_process(kvlist,
MLX4_PMD_PORT_KVARG,
(int (*)(const char *,
const char *,
void *))
mlx4_arg_parse,
conf);
if (ret != 0)
goto free_kvlist;
}
}
free_kvlist:
rte_kvargs_free(kvlist);
return ret;
}
/* test a valid case */
static int test_valid_kvargs(void)
{
struct rte_kvargs *kvlist;
const char *args;
const char *valid_keys_list[] = { "foo", "check", NULL };
const char **valid_keys;
/* empty args is valid */
args = "";
valid_keys = NULL;
kvlist = rte_kvargs_parse(args, valid_keys);
if (kvlist == NULL) {
printf("rte_kvargs_parse() error");
goto fail;
}
rte_kvargs_free(kvlist);
/* first test without valid_keys */
args = "foo=1234,check=value0,check=value1";
valid_keys = NULL;
kvlist = rte_kvargs_parse(args, valid_keys);
if (kvlist == NULL) {
printf("rte_kvargs_parse() error");
goto fail;
}
/* call check_handler() for all entries with key="check" */
count = 0;
if (rte_kvargs_process(kvlist, "check", check_handler, NULL) < 0) {
printf("rte_kvargs_process() error\n");
rte_kvargs_free(kvlist);
goto fail;
}
if (count != 2) {
printf("invalid count value %d after rte_kvargs_process(check)\n",
count);
rte_kvargs_free(kvlist);
goto fail;
}
count = 0;
/* call check_handler() for all entries with key="unexistant_key" */
if (rte_kvargs_process(kvlist, "unexistant_key", check_handler, NULL) < 0) {
printf("rte_kvargs_process() error\n");
rte_kvargs_free(kvlist);
goto fail;
}
if (count != 0) {
printf("invalid count value %d after rte_kvargs_process(unexistant_key)\n",
count);
rte_kvargs_free(kvlist);
goto fail;
}
/* count all entries with key="foo" */
count = rte_kvargs_count(kvlist, "foo");
if (count != 1) {
printf("invalid count value %d after rte_kvargs_count(foo)\n",
count);
rte_kvargs_free(kvlist);
goto fail;
}
/* count all entries */
count = rte_kvargs_count(kvlist, NULL);
if (count != 3) {
printf("invalid count value %d after rte_kvargs_count(NULL)\n",
count);
rte_kvargs_free(kvlist);
goto fail;
}
/* count all entries with key="unexistant_key" */
count = rte_kvargs_count(kvlist, "unexistant_key");
if (count != 0) {
printf("invalid count value %d after rte_kvargs_count(unexistant_key)\n",
count);
rte_kvargs_free(kvlist);
goto fail;
}
rte_kvargs_free(kvlist);
/* second test using valid_keys */
args = "foo=droids,check=value0,check=value1,check=wrong_value";
valid_keys = valid_keys_list;
kvlist = rte_kvargs_parse(args, valid_keys);
if (kvlist == NULL) {
printf("rte_kvargs_parse() error");
goto fail;
}
/* call check_handler() on all entries with key="check", it
* should fail as the value is not recognized by the handler */
if (rte_kvargs_process(kvlist, "check", check_handler, NULL) == 0) {
printf("rte_kvargs_process() is success bu should not\n");
rte_kvargs_free(kvlist);
goto fail;
}
count = rte_kvargs_count(kvlist, "check");
if (count != 3) {
printf("invalid count value %d after rte_kvargs_count(check)\n",
count);
rte_kvargs_free(kvlist);
goto fail;
}
rte_kvargs_free(kvlist);
return 0;
fail:
printf("while processing <%s>", args);
if (valid_keys != NULL && *valid_keys != NULL) {
printf(" using valid_keys=<%s", *valid_keys);
while (*(++valid_keys) != NULL)
printf(",%s", *valid_keys);
printf(">");
}
printf("\n");
return -1;
}
