Function rte_flow_validate

dpdk/lib/ethdev/rte_flow.c:361–394

Check whether a flow rule can be created on a given port. */

/* Check whether a flow rule can be created on a given port. */
int
rte_flow_validate(uint16_t port_id,
		  const struct rte_flow_attr *attr,
		  const struct rte_flow_item pattern[],
		  const struct rte_flow_action actions[],
		  struct rte_flow_error *error)
{
	const struct rte_flow_ops *ops = rte_flow_ops_get(port_id, error);
	struct rte_eth_dev *dev = &rte_eth_devices[port_id];
	int ret;

	if (likely(!!attr) && attr->transfer &&
	    (attr->ingress || attr->egress)) {
		return rte_flow_error_set(error, EINVAL,
					  RTE_FLOW_ERROR_TYPE_ATTR,
					  attr, "cannot use attr ingress/egress with attr transfer");
	}

	if (unlikely(!ops))
		return -rte_errno;
	if (likely(!!ops->validate)) {
		fts_enter(dev);
		ret = ops->validate(dev, attr, pattern, actions, error);
		fts_exit(dev);
		ret = flow_err(port_id, ret, error);

		rte_flow_trace_validate(port_id, attr, pattern, actions, ret);

		return ret;
	}
	return rte_flow_error_set(error, ENOSYS,
				  RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
				  NULL, rte_strerror(ENOSYS));
}

/* Create a flow rule on a given port. */
struct rte_flow *