Function rte_eth_iterator_init

dpdk/lib/ethdev/rte_ethdev.c:174–288

};

int
rte_eth_iterator_init(struct rte_dev_iterator *iter, const char *devargs_str)
{
	int ret;
	struct rte_devargs devargs;
	const char *bus_param_key;
	char *bus_str = NULL;
	char *cls_str = NULL;
	int str_size;

	if (iter == NULL) {
		RTE_ETHDEV_LOG(ERR, "Cannot initialize NULL iterator\n");
		return -EINVAL;
	}

	if (devargs_str == NULL) {
		RTE_ETHDEV_LOG(ERR,
			"Cannot initialize iterator from NULL device description string\n");
		return -EINVAL;
	}

	memset(iter, 0, sizeof(*iter));
	memset(&devargs, 0, sizeof(devargs));

	/*
	 * The devargs string may use various syntaxes:
	 *   - 0000:08:00.0,representor=[1-3]
	 *   - pci:0000:06:00.0,representor=[0,5]
	 *   - class=eth,mac=00:11:22:33:44:55
	 *   - bus=X,paramX=x/class=Y,paramY=y/driver=Z,paramZ=z
	 */

	/*
	 * Handle pure class filter (i.e. without any bus-level argument),
	 * from future new syntax.
	 * rte_devargs_parse() is not yet supporting the new syntax,
	 * that's why this simple case is temporarily parsed here.
	 */
#define iter_anybus_str "class=eth,"
	if (strncmp(devargs_str, iter_anybus_str,
			strlen(iter_anybus_str)) == 0) {
		iter->cls_str = devargs_str + strlen(iter_anybus_str);
		goto end;
	}

	/* Split bus, device and parameters. */
	ret = rte_devargs_parse(&devargs, devargs_str);
	if (ret != 0)
		goto error;

	/*
	 * Assume parameters of old syntax can match only at ethdev level.
	 * Extra parameters will be ignored, thanks to "+" prefix.
	 */
	str_size = strlen(devargs.args) + 2;
	cls_str = malloc(str_size);
	if (cls_str == NULL) {
		ret = -ENOMEM;